WO2002050898A1 - Dispositif a circuit integre semi-conducteur - Google Patents
Dispositif a circuit integre semi-conducteur Download PDFInfo
- Publication number
- WO2002050898A1 WO2002050898A1 PCT/JP2001/011039 JP0111039W WO0250898A1 WO 2002050898 A1 WO2002050898 A1 WO 2002050898A1 JP 0111039 W JP0111039 W JP 0111039W WO 0250898 A1 WO0250898 A1 WO 0250898A1
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- WIPO (PCT)
- Prior art keywords
- electrode
- circuit
- integrated circuit
- external connection
- semiconductor integrated
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Definitions
- the present invention relates to a semiconductor integrated circuit device, and more particularly to a technology effective when used on a semiconductor substrate on which a protruding electrode such as a solder bump for substrate mounting is formed.
- flip-chip type semiconductor integrated circuit devices Examples of semiconductor integrated circuit devices on which protruding electrodes such as solder bumps are formed (hereinafter, also simply referred to as flip-chip type semiconductor integrated circuit devices) are described in, for example, Japanese Patent Application Laid-Open No. 5-2180182, There are Japanese Patent Application Laid-Open No. Hei 8-250498 and US Pat. No. 5,547,740. Each of these publications discloses one of the basic modes of the flip-chip type semiconductor integrated circuit device.
- rewiring is routed from a bonding pad of the chip, and bump electrodes connected to the rewiring are arranged in an array (area array) on the surface of the chip.
- the bump electrodes arranged in an area array are exposed from the surface protective film.
- the bump electrode is a terminal directly connected to the mounting substrate, and only the bump electrode is exposed and the bonding pad of the semiconductor chip becomes an insulating film or a protective film.
- the bump electrodes correspond to external connection terminals such as lead pins of a package such as a QFP.
- the circuit scale of an internal circuit tends to increase more and more toward higher functionality.
- the circuit wiring width decreases. For this reason, for example, in a semiconductor integrated circuit device that operates with a clock, the signal is delayed while being transmitted through wiring inside the connector supplied from an external terminal, and a clock supplied to each internal circuit is transmitted. A skew occurs between clocks, and a timing margin is required to absorb the skew, which hinders the increase in clock frequency.
- An object of the present invention is to provide a semiconductor integrated circuit device capable of high-speed operation and rational arrangement of circuits.
- Another object of the present invention is to provide a semiconductor integrated circuit device having a simple configuration and a high degree of freedom in circuit layout in a chip.
- a circuit element and wiring constituting a circuit and a first electrode electrically connected to the circuit are provided on one main surface of the semiconductor substrate, and the circuit is formed on the circuit except for an opening on the surface of the first electrode.
- An organic insulating film is formed on the organic insulating film, first and second external connection electrodes are provided on the organic insulating film, and the first and second external connection electrodes are electrically connected to the first electrode.
- a conductive layer is deposited on the organic insulating film.
- FIG. 1 is a schematic configuration diagram showing one embodiment of a semiconductor integrated circuit device according to the present invention.
- FIG. 2 is a plan view showing one embodiment of the semiconductor integrated circuit device according to the present invention.
- FIG. 3 is a schematic diagram showing an embodiment of a DRAM to which the present invention is applied.
- FIG. 4 is a block diagram showing one embodiment of a clock input unit of the semiconductor integrated circuit device according to the present invention.
- FIG. 5 is a schematic sectional view showing one embodiment of the semiconductor integrated circuit device according to the present invention.
- FIG. 6 is a schematic plan view showing one embodiment of the semiconductor integrated circuit device according to the present invention.
- FIG. 7 is a block diagram showing one embodiment of a semiconductor integrated circuit device according to the present invention.
- FIG. 8 is a schematic plan view showing one embodiment of the semiconductor integrated circuit device according to the present invention.
- FIG. 9 is a schematic sectional view showing one embodiment of the semiconductor integrated circuit device according to the present invention.
- FIG. 10 is a schematic plan view showing another embodiment of the semiconductor integrated circuit device according to the present invention.
- FIG. 11 is a schematic configuration diagram showing another embodiment of the semiconductor integrated circuit device according to the present invention.
- FIG. 12 is a schematic diagram showing another embodiment of the DRAM to which the present invention is applied. It is a schematic layout diagram,
- FIG. 13 is a block diagram showing one embodiment of the clock input section of the DRAM of FIG.
- FIG. 14 is a plan view showing another embodiment of the semiconductor integrated circuit device according to the present invention.
- FIG. 15 is a schematic cross-sectional view for explaining one embodiment of a method for manufacturing a rewiring according to the present invention.
- FIG. 16 is a sectional view showing another embodiment of the rewiring provided in the semiconductor integrated circuit device according to the present invention.
- FIG. 17 is a longitudinal sectional view of a semiconductor device showing an embodiment of a logic circuit and an external input / output circuit formed in a semiconductor chip constituting a semiconductor integrated circuit device according to the present invention
- FIG. 18 is a cross-sectional view of the element structure for explaining a part of one embodiment of a method for manufacturing a rewiring of a semiconductor integrated circuit device according to the present invention
- FIG. 19 is a cross-sectional view of the element structure for explaining the remaining part of one embodiment of the method for manufacturing a redistribution line of a semiconductor integrated circuit device according to the present invention.
- FIG. It is a perspective view at one stage for explaining the manufacturing process of such a flip-chip type semiconductor integrated circuit,
- FIG. 21 is a perspective view showing another step for explaining the manufacturing process of the flip-chip type semiconductor integrated circuit according to the present invention.
- FIG. 22 is a perspective view showing another stage of the manufacturing process of the flip-chip type semiconductor integrated circuit according to the present invention.
- FIG. 23 is a perspective view of another stage for explaining the manufacturing process of the flip-chip type semiconductor integrated circuit according to the present invention.
- FIG. 24 is a perspective view of another stage for explaining the manufacturing process of the flip-chip type semiconductor integrated circuit according to the present invention
- FIG. 25 is a flow chart for explaining a manufacturing process flow after the rewiring forming process of the flip-chip type semiconductor integrated circuit device according to the present invention
- FIG. 26 is a schematic sectional view showing another embodiment of the semiconductor integrated circuit device according to the present invention.
- FIG. 27 is a schematic configuration diagram showing still another embodiment of the semiconductor integrated circuit device according to the present invention.
- FIG. 28 is a plan view showing still another embodiment of the semiconductor integrated circuit device according to the present invention.
- FIG. 29 is a plan view showing still another embodiment of the semiconductor integrated circuit device according to the present invention.
- FIG. 1 shows a schematic configuration diagram of an embodiment of a semiconductor integrated circuit device according to the present invention.
- FIG. 1 (A) shows a cross section
- FIG. 1 (B) shows a plane portion.
- the illustrated circuit elements and wiring force are formed on one main surface side of the semiconductor chip 06.
- the pad 04 is formed by the uppermost wiring.
- the first-layer organic insulating film 02 is formed.
- the organic insulating film 02 is made of polyimide.
- Wiring layer 0 5 is formed.
- a second-layer organic insulating film 01 is formed except for an opening formed by a bump electrode 03. At least two bump electrodes are provided for one rewiring 05.
- the rewiring 05 of this embodiment is simply turned around from the bonding pad of the semiconductor chip to increase the interval between the bump electrodes, and the bump electrodes are connected to the wiring of the mounting board, and the rewiring is performed in a general IC package. Instead of being replaced with a lead bin, it serves as a wiring that connects the two bump electrodes 03 to each other and connects to two pads (bonding pads) provided on the semiconductor chip. It is intended to have.
- Such a configuration of the regeneration line 05 is useful as a power supply means as described below.
- an uppermost wiring layer 07 for connecting the two pads 04 is formed on the main surface of the semiconductor chip 06.
- the uppermost wiring layer 07 applies an operating voltage such as a power supply voltage to a circuit element formed on the main surface side of the semiconductor chip 06, for example.
- FIG. 2 is a plan view showing one embodiment of the semiconductor integrated circuit device according to the present invention.
- the semiconductor integrated circuit device of this embodiment is not particularly limited, it is directed to a dynamic RAM (random, access memory), and the layout of rewiring and bump electrodes and pads connected thereto is reduced. It is shown.
- the pump electrode is indicated by ⁇
- the pad is indicated by a small mouth.
- the rewiring 05 is classified into two types, one for a DC voltage and one for an AC signal, according to its function.
- One wiring layer 605 shown as an example has a one-to-one correspondence between one bump electrode and one pad, similar to rewiring in a conventional wafer-level CSP (chip size package). Also connect It is used for input of address and control signal and input / output of data.
- Each of these signal lines 605 has a small parasitic capacitance and a relatively narrow width corresponding to a plurality of pads provided at a high density in order to perform high-speed transmission of the digital signal transmitted through it.
- a redistribution layer having the formed line width is used.
- a low-impedance power supply can be performed by utilizing the above-mentioned re-ray layer 05.
- a redistribution layer 105 having a large wiring width, which extends the left end of the semiconductor chip vertically and is bent toward the center at the upper and lower parts, is provided for supplying the power supply voltage VDD.
- three bump electrodes are provided at the upper part, one at the center part, and three at the lower part, and the power supply voltage VDD is supplied from a total of seven places from the outside.
- the rewiring 105 includes a portion having a large wiring width to be a main line and a portion branched from the portion and connected to a plurality of pads of a semiconductor chip at a plurality of locations by relatively thin wires.
- the power supply voltage VDD is supplied to the circuit elements from the plurality of pads via the uppermost layer line as described above.
- this layer 205 two bump electrodes are provided at the top, one at the center and three at the bottom, and the ground potential VSS of the circuit is supplied from a total of six locations from outside.
- the reusable line 205 is a part of a thick and wide wiring to be a trunk line, and a part branched from the part and connected to a plurality of pads of a semiconductor chip at a plurality of places by a relatively thin 1 & line.
- Consists of The ground potential VSS of the circuit is supplied to the circuit element from the plurality of pads via the uppermost layer line as described above. If a redistribution layer with a large line width is used to supply such power supply voltages VDD and VSS, Contrary to line 605, a relatively large parasitic capacitance is formed. In the case of the power supply lines VDD and VSS, the parasitic capacitance provided on the power supply lines contributes to voltage stability.
- an independent power supply path is provided for the output circuit in order to reduce transmission of relatively large power supply noise generated in the output circuit to other input circuits and internal circuits. That is, the redistribution layer 305 supplies the ground potential VSSQ of the circuit to the output circuit, and is provided on the semiconductor chip by being divided into four parts, each having a bump for supplying the ground potential VSSQ. An electrode force is provided. These hot spring lines 305 are connected to each other by a wiring on a mounting board via a bump electrode, and are supplied with the same ground potential V SSQ.
- the redistribution layer 405 for supplying the power supply voltage V DDQ for the output circuit is arranged so as to extend the central portion of the semiconductor chip vertically.
- the rewiring layer 405 is provided with two bump electrodes at the upper and lower ends and one bump electrode at the center, and supplies the power supply voltage VDDQ from a total of five locations.
- the rewiring layer in addition to using the rewiring layer to supply the DC voltage as described above, the rewiring layer is also used for a signal line that transmits an AC signal.
- the rewiring layer 505 transmits the clock CLK.
- the clock CL is supplied from the bump 3 ⁇ 4 @ provided at the center of the semiconductor chip, and the pad is provided at the center and provided at the upper and lower ends.
- the clock CLK is transmitted to the specified pad.
- the clock CL # is distributed by the low-resistance re-wiring layer 55 to the semiconductor chip formed in a relatively large size to increase the memory capacity. This reduces the skew of the clock CL # at high speeds, and enables high-speed operation.
- the DRAM chip of this embodiment is a synchronous DRAM having four memory banks or a synchronous DRAM having a DDR configuration, and a memory in units of 64 bits from the above four memory banks. Re-access is performed.
- the input / output circuits are composed of 64 and are arranged vertically in the center of the semiconductor chip. Therefore, the redistribution layers 305 and 405 as power supply lines for supplying the operating voltages VDDQ and VSSQ are provided as described above corresponding to the input / output circuits.
- a bump electrode for supplying the clock CLK is provided at the center, and the clock CLK is distributed by rewiring 505 from the upper and lower branches.
- the propagation delay in the clock supply path can be reduced.
- the skew of the clock becomes the largest skew between the circuit that receives the clock from the pad provided adjacent to the bump electrode and the circuit that receives the clock from the pads provided at both ends.
- FIG. 3 is a schematic layout diagram of an embodiment of a DRAM to which the present invention is applied.
- the layout of the DRAM of this embodiment corresponds to the rewiring and pad of the DRAM of FIG.
- a memory array or a memory mat 14 is provided divided into a plurality.
- the input / output circuits are distributed and arranged in the vertical center of the semiconductor chip as described above.
- 13 input / output control circuits are provided.
- I / O control circuits 13 are provided for each of the two divided memory arrays 14 so as to sandwich the vertical center of the chip.
- one input / output control circuit 13 takes charge of eight input / output circuits.
- the four input / output control circuits 13 provided corresponding to the left and right memory arrays are divided into upper and lower two units as one set, and one clock input buffer 11 is allocated. Further, one clock input pad CLKU and one clock input pad CLKD are provided for two clock buffers 11 provided adjacent to the left and right. A clock input pad CLKC is also provided at the center of the chip.
- clock input pads CLU, CLKC and CLKD are interconnected by a clock input rewiring 12.
- the rewiring 12 is also connected to the solder bump electrode 10 for clock input. With this configuration, the clock CLK input from the clock input solder bump electrode 10 is transmitted to the clock input pads CLK, CLKU, and CLKD via the rewiring 12.
- FIG. 4 is a block diagram of one embodiment of the clock input section of the semiconductor integrated circuit device according to the present invention. This embodiment corresponds to the DARM clock input circuit shown in FIG.
- the bump electrode 10 for clock input is connected to the clock input pads CLKU, CLKC and CLKD by the re-IS spring 12.
- Clock input The clock supplied from the CLKC is transmitted to the input of the clock input buffer 11.
- the internal clock output from the clock input buffer 11 is transmitted to the read Z write control circuit 16.
- the read-write control circuit 16 generates a read control signal READ if the read operation power is indicated by a command (not shown).
- the read control signal READ is used as a control signal for the clock input buffer 11 provided in correspondence with the clock input pads CLKU and CLKD.
- Output register clocks QCLK0 to QCLK3 are formed from the clock signals input through CLKU and CLKD, and transmitted to the output register circuit 17 included in the input / output control circuit 13.
- the output register circuit 17 takes in the read data data by the output register clocks QCLK0 to QCLK3, and transmits an output signal to the input / output pad 19 through the output buffer circuit 18.
- These input / output pads 19 are connected to input / output bump electrodes via lines not shown.
- FIG. 5 is a schematic sectional view of one embodiment of the semiconductor integrated circuit device according to the present invention. This embodiment corresponds to, but is not limited to, the clock input unit shown in FIG. 3 or FIG.
- the package is formed by a wafer process as shown in FIGS. 20 to 24 to be described later, ⁇ package Abbreviation) Sometimes called wiring (layer) or WPP bump.
- wiring (layer) or WPP bump is formed on the WPP wiring layer to make an electrical connection.
- This WPP wiring layer is covered on the organic insulating film, not shown, and is connected to the metal PAD (pad) of the chip at the opening.
- This metal PAD is connected to circuit 1 by the uppermost metal wiring on the chip.
- the metal PAD corresponds to the clock input pad CLKC
- the circuit 1 corresponds to the clock input buffer 11.
- FIG. 6 is a schematic plan view of one embodiment of the semiconductor integrated circuit device according to the present invention. This embodiment corresponds to, but is not limited to, the clock input unit shown in FIG. 3 or FIG.
- the clock signal WPP pump similar to the above is formed on the WPP wiring layer and is electrically connected.
- This WPP wiring layer is deposited on the organic insulating film (not shown), and is connected to the CLK PAD of the chip at the opening.
- This CLK PAD is connected to the clock buffer circuit by the CL Kfc line consisting of the uppermost metal wiring on the chip, and is connected to the peripheral circuit by similar wiring, and this peripheral circuit is connected to the read / write control circuit, for example. Make up 16.
- the above-mentioned WPP wiring layer has a CLK corresponding to the above-mentioned clock buffer circuit. It is further branched up and down from the PAD section and extended, and is connected to two CLK PADs corresponding to the CLKU and CLKD through openings. These CLK pads are connected to peripheral circuits by metal wiring on the chip as described above. An operation of the peripheral circuit is controlled by the read control signal READ, and an output control circuit including an input buffer 11 for receiving a clock signal input through a clock input pad CLKU or CLKD (not shown). Construct 1 3
- FIG. 7 is a block diagram showing one embodiment of the semiconductor integrated circuit device according to the present invention. This embodiment corresponds to, but is not limited to, the clock input unit shown in FIG. 3 or FIG.
- the clock signal WPP bump similar to the above is formed on the WPP wiring layer and is electrically connected.
- This WPP wiring layer is provided on the organic insulating film (not shown), and is connected to a click signal WPP bump at an opening thereof.
- This WPP wiring layer (CLK wiring) is connected to the pad PAD corresponding to the clock buffer circuit of the peripheral circuit to which it is distributed.
- the low-resistance WPP wiring (rewiring) configured as described above extends from the clock signal WPP bump to the pad PAD corresponding to the input section of the clock nosofe of the peripheral circuit to which the clock signal is distributed. The power induced by the clock wiring and the signal delay there are small, and the clock skew between them is also small.
- the pads PAD correspond to the pads shown in the embodiment of FIGS. 3 to 6. Therefore, each peripheral circuit corresponds to the read / write control circuit 16 and the output control circuit 13.
- FIG. 8 shows a schematic plan view of one embodiment of the semiconductor integrated circuit device according to the present invention.
- This embodiment is directed to an example of external power distribution, and shows a power supply path of a power supply voltage VDD and a ground potential VSS of the circuit for each circuit formed on a semiconductor chip.
- a pair of WPP wires are provided to extend the left and right ends of the semiconductor chip up and down.
- the WPP wiring arranged on the left side supplies the power supply voltage VDD, although not particularly limited.
- WPP bump force is provided on the protruding portions branched toward the center of the chip, and power supply VDD is supplied from the three locations of the upper and lower ends and the central portion. Done.
- the WPP wiring disposed on the right side supplies the ground potential VSS of the circuit.
- WPP bumps are provided on the protruding parts which are provided near the center of the chip, and the ground potential VSS of the circuit is supplied from three places, the upper and lower ends and the central part. Force is done.
- a WPP wiring force is formed extending from the WPP bump at the lower end to the center of the chip and connected to the pad VDDP AD.
- the pad VDDP AD is connected to the on the chip, and the power supply voltage VDD is supplied to the circuit elements formed on the semiconductor chip via the wiring on the chip.
- an appropriate thin WPP line is branched from the thick W line that forms the trunk line and connected to the pad VDDPAD similar to the above, and each VDDPAD is connected to the above chip.
- the configuration may be such that they are interconnected by upper wiring.
- the WPP wiring layer for the ground potential VSS of the circuit is formed extending from the WPP bump on the upper end side to the center of the chip and connected to the pad VSS PAD.
- the pad VSS PAD is connected to the wiring on the chip, and the ground potential VSS of the circuit is supplied to the circuit element formed on the semiconductor chip via the spring on the chip.
- an appropriate thin WPP line is branched from the thick WPPId line that constitutes the trunk line, and a pad similar to the above.
- the configuration may be such that the VSS pads are connected to each other, and the respective VSS pads are interconnected by the above-mentioned on-chip wiring.
- FIG. 9 is a schematic sectional view of one embodiment of the semiconductor integrated circuit device according to the present invention.
- L which is not particularly limited, is directed to the power supply path of the power supply voltage V DD (or the circuit ground potential V SS) of the embodiment of FIG.
- WPP bumps are formed on the WPPfc line layer (VDD) for electrical connection.
- the WPP line layer is attached on the organic insulating film (not shown), and a total of three WPP bumps are provided on the upper part thereof.
- the WPP wiring layer is connected to the pad VDDPAD at the opening of the organic insulating film.
- the pad VDDPAD is connected by an on-chip wiring, that is, a metal wiring of a g_h layer, and the power supply voltage VDD is supplied to each circuit element (not shown) via the on-chip wiring.
- FIG. 10 is a schematic plan view of another embodiment of the semiconductor integrated circuit device according to the present invention. This embodiment is directed to an example of internal power distribution, and shows a power supply path of an internal voltage VDD I obtained by stepping down a power supply voltage VDD supplied from the outside to each circuit formed on a semiconductor chip.
- WPP wiring is provided to extend the left and right ends and the lower end of the semiconductor chip, and serves as a power supply wiring for supplying the internal voltage VDDI. And against the WP P wiring branches to WP P wiring is extended in the lateral direction is provided at the lower end, Bruno, is connected to the 0 head VDD I PAD.
- This pad VDD I PAD transmits the step-down voltage VDD I formed by the step-down circuit through the on-chip wiring.
- This step-down circuit is implemented by surrounding the semiconductor chip with a WPP wiring layer that extends the left, right, and lower ends.
- Pads provided at multiple locations for peripheral circuits that transmit voltage VDDI and operate at such voltage VDDI The above-mentioned step-down voltage VDDI is supplied through the VDDI PAD.
- a WPP pad for VDD is provided and connected to the pad VDDP AD by a WPP wiring layer.
- the pad VDD PAD is connected to a wiring on the chip, and the power supply voltage VDD is supplied to the step-down circuit via the wiring on the chip.
- the above-mentioned WP for VDD WP connected to the bump ⁇ £ The power supply ⁇ ⁇ ⁇ ff VDD is supplied in the same manner as the step-down circuit described above.
- FIG. 11 is a schematic configuration diagram of another embodiment of the semiconductor integrated circuit device according to the present invention.
- the WPP wiring layer in addition to providing the WPP wiring layer in one-to-one correspondence with the WPP bump and the pad PAD, the WPP wiring layer is used as a part of a signal line or a power supply line. In this case, it is necessary to arrange different wirings so as to cross each other while being electrically separated from each other. If the above-mentioned WPP wiring is multi-layered, it is easy to intersect while electrically separating as described above, but the manufacturing process of the WPP wiring becomes complicated and the manufacturing cost is increased.
- FIG. 11 (A) when the WPP wiring extending in the horizontal direction and the wiring extending in the vertical direction perpendicular to the WPP wiring are intersected while being electrically separated from each other, As shown in FIG. 11 (B), the vertical lines extending in the vertical direction at the intersections are dropped on the on-chip wiring and separated. That is, in FIG. 11 (A), the WPP bump for the external input signal provided above the WPP wiring layer extending in the horizontal direction is extended in the horizontal direction through the pad PAD by the WPP wiring. It is connected to the on-chip wiring formed below the organic insulating film of the WPP wiring layer. Heel The on-chip wiring is led to the pad PAD through the lower side of the WPP wiring layer extending in the lateral direction, and then connected to the WPP wiring again from there, crossing the other on-chip wiring. Connected to external input signal PAD.
- a power supply line for transmitting the internal step-down voltage or the external power supply voltage is formed by the WPP wiring layer extending in the horizontal direction in FIG.
- the input signal line can be provided, and the degree of freedom in the layout of the circuit formed on the semiconductor chip can be increased.
- address signals requiring high-speed operation and signal lines for data input and data output are arranged with a relatively short distance between the WPP bump and the pad, like signal lines for switching operation modes.
- WPP bumps for signal input corresponding to those that do not require high-speed signal transmission are formed in empty areas so as to avoid the parts where WPP bumps corresponding to the above address signals, data input and data output are formed. Therefore, at the intersection as described above, it may be configured by a WPP wiring including an on-chip wiring.
- FIG. 12 is a schematic layout diagram of another embodiment of the DRAM to which the present invention is applied.
- the layout of the DRAM of this embodiment corresponds to the rewiring and pads of the DRAM of FIG. 2 except for the clock input system. That is, the memory array or the memory mat 14 is provided by being divided into a plurality in the same manner as described above. As described above, 64 input / output circuits are distributed and arranged in the vertical center of the semiconductor chip, and an input / output control circuit is provided correspondingly.
- I / O control circuits 114 are provided for each of the two divided memory arrays 14 so as to sandwich the vertical center of the chip. Thus, one input / output control circuit 114 handles eight input / output circuits.
- the circuit 114 is provided with clock input pads CL KU1 or CLKU4 and CLKD1 to CLKD4 provided for the circuit 114, and the internal clock formed by the port regeneration circuit 110 is transmitted by the rewiring 12 to transmit the internal clock.
- the clock CLK input from the solder bump electrode 10 for clock input is transmitted to the pad CLKC by the redistribution 12, and then transmitted to the clock recovery circuit 110 by the on-chip wiring 15.
- the clock reproduction circuit 110 is composed of a PLL circuit, a DLL or an SMD circuit, and forms an internal clock signal corresponding to the clock CLK supplied from outside.
- the formed internal clock signal is transmitted to the pad CLK2 by the on-chip wiring, and then distributed to the respective clock input pads CLKU1 to CLKU4 and CLKD1 to CLKD4 by the rewiring 12 therefrom. Is done.
- FIG. 13 is a block diagram showing one embodiment of the clock input section of the DRAM shown in FIG.
- the clock input bump electrode 10 is connected to the clock input pad CLKC by the rewiring 12.
- Clock input The clock supplied from the clock CLKC is transmitted to the input of the clock recovery circuit 110 by the chip.
- the clock recovery circuit 110 is composed of a clock synchronization circuit such as a PLL circuit, a DLL circuit, or an SMD circuit as described above, and has a predetermined phase difference from the clock supplied from the clock input bump 10. To form a synchronized internal clock signal.
- the internal clock power is delayed by the signal delay in the input buffer circuit that receives the externally supplied clock.
- a PLL circuit, a DLL circuit or an SMD circuit is used.
- PLL Phase Locked Loop
- Phase comparator compares the phase difference (frequency difference) between the clock generated by the voltage-controlled oscillator circuit such as VC0 and the like, and forms a control signal that matches the two to control VC0. Things.
- an external clock is introduced by inserting a delay circuit formed by a replica circuit corresponding to the input and output buffers into the clock to be compared by the phase comparator, in other words, into the PLL loop.
- a delay circuit formed by a replica circuit corresponding to the input and output buffers into the clock to be compared by the phase comparator, in other words, into the PLL loop.
- the clock delayed by the variable delay circuit and the clock input one cycle later are compared by the phase comparator, and the above-mentioned variable delay circuit is compared so that the two coincide.
- the delay time is controlled, and a delay circuit formed by a replica circuit corresponding to an input buffer for clock input is introduced into a clock to be compared by the phase comparator similarly to the PLL circuit. In this way, the phase difference between the external clock and the internal clock is eliminated, or the above-mentioned delay time is made longer than the delay time in the input buffer to advance the phase of the internal clock with respect to the external clock. be able to.
- a clock synchronization circuit that does not include a feedback loop like the LL circuit Yes the time required for synchronization (lock time) is as short as 2-3 cycles.
- the lock time can be shortened by measuring the cycle of the input clock as the number of stages of the delay circuit.
- This measurement circuit measures the delay time per component of the delay circuit as time resolution, and is generally about the delay time of two stages of a CMOS inverter circuit.
- An example of such a clock synchronization circuit using the SMD is disclosed in Japanese Patent Application Laid-Open No. Hei 8-237091.
- the internal clock generated by the above-mentioned clock recovery circuit 110 is guided to the pad CLK 2 by an upper line on the chip, and from there, is used for the clock input of the input / output control circuit 1 14 by rewiring 12. Pads are distributed to CLKU 1-4 and CLKD 1-4.
- the input / output control circuit 114 includes, for example, an address input pad 113, an address input buffer 112 for receiving an address signal input from the pad 113, and an address input register for receiving the address signal. Including 1 1 1
- the internal clock is supplied to the address input register 111. In this case, by synchronizing the external clock and the internal clock transmitted to the address register, it is possible to compensate for the symbol delay on the clock input path.
- FIG. 14 is a plan view of another embodiment of the semiconductor integrated circuit device according to the present invention.
- the semiconductor integrated circuit device of this embodiment is directed to an unlimited force static type RAM (random 'access' memory), and shows a layout of
- the bump electrodes 20 and the like are indicated by squares, and the pads 22 and the like are indicated by small mouths, as described above. These knoops 3 ⁇ 4 @ and ⁇ ,. Are connected to each other by re-wiring 21 and the like. Also in this embodiment, rewiring is divided into two types, one for DC power and the other for AC signal, according to its function. .
- One redistribution layer 25 shown as an example connects one bump electrode and one pad in a one-to-one correspondence, similar to the rewiring in a conventional wafer 'level CSP. Used for input of address and control signal and input / output of data. Each of these signal lines 25 has a small parasitic capacitance and a relatively narrow width corresponding to a plurality of pads provided at high density in order to perform high-speed transmission of digital signals transmitted therethrough.
- the rewiring layer having the determined wiring width is used.
- a low-impedance power supply can be performed using the regeneration layer.
- a redistribution layer 21 having a large wiring width extending along the upper half portion of the semiconductor chip and the peripheral portion of the lower half chip is provided for supplying the internal step-down voltage VDDI.
- the re-wiring layer 21 is transmitted via a step-down voltage VDDI force formed by a step-down voltage circuit 23 indicated by a dotted line on both the left and right sides of the center of the chip via a wiring 24 on the chip such as aluminum wiring.
- the step-down voltage VDDI is a low voltage such as 1.5 V.
- rewiring 2 1 other re £ line
- rewiring formed of relatively thick wire width rather except fine rewiring of for the signal input such as those supplying the ground potential VSS of the circuit, or the power supply
- the voltage VDD is supplied, and the power supply voltage V DDQ for the output circuit and the ground potential VS SQ of the circuit are used to reduce the effect of power supply noise as described above.
- These are provided with a plurality of bump electrodes, each of which is supplied with the same voltage as VSS or VDD.
- the SRAM of this embodiment is provided with peripheral circuits at the vertical center and horizontal center of the chip, and the memory array is provided in four areas by such peripheral circuits.
- FIG. 15 is a schematic cross-sectional view for explaining a method of manufacturing the above-described rewiring.
- a circuit is completed on a semiconductor substrate (wafer).
- polyimide which is an organic insulating film
- photographic technology photo, development
- a resist film is formed, and a photolithographic technique (photo, development) is used to form a re-wiring pattern.
- Cu (copper) is electroplated after cleaning.
- the resist film removal liquid is immersed.
- an upper organic insulating film is formed. That is, polyimide is applied in the same manner as described above, and the upper organic insulating film having an opening in the pump electrode is formed by photographic technology (photo, development), and a curing bake is performed.
- FIG. 16 is a sectional view showing another embodiment of the rewiring provided in the semiconductor integrated circuit device according to the present invention.
- the illustrated circuit elements and wirings are formed on the main surface side of the semiconductor chip.
- a pad 04 is formed by the wiring of the uppermost layer.
- a first-layer organic insulating film 02 is formed.
- this organic insulating film 02 is made of polyimide.
- Wiring layer 0 5 is formed.
- a Cu (copper) post force is provided on a portion of the surface of the rewiring layer 05 where a bump electrode 03 is formed, and a sealing resin 101 is formed on other portions. You. Then, the bump electrode 03 is provided on the surface of the Cu post. At least two bump electrodes 03 are provided for one rewiring 05.
- FIG. 17 illustrates a vertical cross section of a device structure of an embodiment of a mouthpiece circuit and an external input / output circuit formed on a semiconductor chip constituting a semiconductor integrated circuit device according to the present invention.
- Resistivity 10 ⁇ cm! Type silicon
- a p-type peg region 122 having a depth of 0.8 m is formed.
- an n-type drain region 139, an n-type source region 138, a thick gate oxide film 126 having a thickness of 8 nm, and a 0.2-nm thick film are separated by an element isolation region 125.
- Five n-channel transistors having a power supply voltage of 3.3 V are formed by a gate electrode 131 having a gate length of 0.4 ⁇ m and made of an n-type polysilicon film of m.
- a p-channel transistor, which forms a CM0S circuit in combination with the n-channel transistor, has an n-type well region formed on the p-type silicon substrate 120 (not shown), and a p-type source region is formed there. A region and a drain region are formed.
- a silicon nitride film 140 having a thickness of 100 nm deposited by a CVD method is disposed, and a film thickness 1 / a contact plug 142 provided at a desired position of the contact interlayer film 141 having a thickness of m, a first metal wiring 143 made of an aluminum film having a thickness of 0.5 m, and a film thickness 1 ⁇ m which is flattened by a CMP method.
- a first inter-layer plug 145 provided at a desired position of the first interlayer film 144, a second-layer metal wiring 146 made of an aluminum film having a thickness of 0.5, and a film flattened by a CMP method.
- a third interlayer plug 151 provided at a desired position of the m third interlayer film 150 and a fourth layer metal wiring 152 made of an aluminum film having a thickness of 1 m are provided.
- the fourth metal line 152 is used as a layer for a bonding pad and the like in addition to the uppermost metal wiring.
- a system LSI that constitutes a one-chip microcomputer, etc., consisting of a CPU (central processing unit), memory circuits that constitute peripheral circuits, and multiple circuit blocks such as external input / output devices formed on a single semiconductor substrate.
- MIS CMOS CMOS transistors have two types of gate oxide thickness.
- Circuits that need to ensure a certain level of withstand voltage (withstand voltage against breakdown of gate oxide) for the operating voltage of the MIS transistor such as DRAM for external input / output circuits, analog input / output circuits, and memory circuits
- the MOSFET for selecting the address of the memory cell, the analog Z digital converter, and the digital / analog converter are not particularly limited, when the 0.2 im process technology is used, a gate length of 0.4 / It has a MIS transistor with a gate oxide film thickness of 8 nm.
- circuits that use a relatively low step-down internal voltage as the operating power supply ie, logic circuits and SRAM.
- CPUs are composed of MIS transistors with a gate length of 0.2 ⁇ and a gate oxide thickness of 4 nm. You.
- FIG. 18 and FIG. 19 are cross-sectional views of the element structure for explaining one embodiment of the method of manufacturing the rewiring of the semiconductor integrated circuit device according to the present invention.
- bonding pads 202 (202a and 202b) are formed on the surface of a semiconductor chip 201 in which a large number of circuit elements are formed on a semiconductor substrate.
- the cross section of the ueno covered with the protective layer 203 is shown.
- the one shown in the same figure (A) corresponds to the stage of completion of a conventional wafer for wire bonding connection.
- a lower insulating layer 204 is formed on the surface of the wafer, and the lower insulating film 204 has bonding pads 202 (202a and 202). Open the portion of 0 2 b).
- rewiring 205 is formed from the bonding pad 202a to the position where the bump electrode is to be formed, and at the same time, rewiring is performed for the inspection dedicated pad 202b. Form layer 2 95.
- a surface insulating layer 206 is formed, and bonding pads 202 (202 a and 202 b) of the redistribution layers 205, 295 are formed. ) Exposing the portion immediately above and the portion where the bump electrode is formed.
- a bump electrode base metal 207 is formed on the bump electrode forming portion, and the bump electrode base metal 207 is formed on the bonding pads 202 (202a and 202b). Also, a bump electrode base metal layer 297 is formed at the same time.
- the bump electrode base metal layer 2997 immediately above the bonding pad 202 (202a and 202b) formed as described above is used as a power supply or signal input / output bonding pad 202a.
- a test pad 209b corresponding to the inspection-specific bonding pad 202b.
- the probe is inspected by bringing the tip of the probe 211 into contact with the inspection pads 209a and 209, and defective products utilizing the redundancy of the circuit.
- the remedy and selection of functions will be carried out to select non-defective products and defective products.
- bump electrodes 208 are formed on the bump electrode base metal 207 by solder, and the completed wafer is cut and separated (diced) into individual chips.
- a flip-chip type semiconductor integrated circuit device is obtained.
- Aluminum or aluminum alloy is usually used for the material of the bonding pad 202 or its surface. Copper or another metal may be used depending on the type of wiring material inside the semiconductor chip.
- the material of im203 is an inorganic film such as a silicon oxide film or a silicon nitride film, an organic film such as polyimide, or a combination thereof.
- the material of the lower insulating layer 204 is a To reduce the stress (stress / strain state) acting on the bump electrode 208 due to the difference in thermal expansion between the semiconductor integrated circuit device and the mounting substrate, etc., and to reduce the capacitance of the re-wire 205, polyimide-fluorinated resin is used.
- organic materials having a low elastic modulus (low elastic modulus) and a low dielectric constant, such as various elastomer materials are desirable.
- examples of the elastomer material include a rubber material such as a silicon-based material and an acryloline-based material, and a polymer material having a low elastic modulus in which these rubber materials are blended.
- the lower insulating layer 204 is formed by varnish spin coating or printing, or film attachment.
- the thickness of the lower insulating layer 204 is desirably about 3 m or more from the viewpoint of reducing stress and capacitance. However, when the organic film is used for the observation 203, the lower insulating layer 204 can be made thinner or omitted.
- the rewiring 205 has a thickness of, for example,! Use a three-layer wiring structure in which copper or steel alloy of up to about 5 m and chromium, titanium, nickel, nickel alloy, etc. of about 0.1 to 0.5 m in thickness are stacked above and below. Aluminum and its alloys can also be used.
- the material of the surface insulating layer 206 is a low-elasticity organic material such as polyimide-epoxy, fluororesin, and various elastomer materials in order to alleviate the stress acting on the bump electrode 208. Is desirable.
- the lower insulating film (further insulating film) of the rewiring is preferably soft to absorb the stress applied to the bump electrode, and the upper insulating film 206 is formed from the crane point of protection to the lower insulating film.
- a material that is relatively harder than 204 may be selected.
- the upper insulating film 206 and the lower insulating film 204 are formed of a photosensitive polyimide resin film.
- the final film hardness (elastic modulus) can be changed by changing the amount of solvent, molecular weight, content of filler, etc. before heat treatment (curing).
- the upper and lower insulating films may be formed of different materials. In this case, for example, it is conceivable to form the upper insulating film 206 with an epoxy resin and the lower insulating film 204 with a polyimide resin.
- the bump electrode base metal 207 it is preferable to form a metal having high solder barrier properties such as chromium, nickel, nickel'tungsten, nickel'copper and the like in a thickness of about 0.3 to 3 m. It is desirable to form a gold thin film layer with a thickness of 0.1 on the surface in order to ensure wettability and electrical connectivity with the cap.
- the solder bump electrode 208 may be formed by printing a solder paste on the solder bump electrode base metal 207, or by transferring a solder ball that has been formed to a predetermined size in advance and then reflowing. it can.
- the pro- As described above, by providing the inspection pads 209 directly above both the power supply and signal input / output bonding pads 202a and the probe inspection bonding pads 202b, the pro- As a result, it is possible to prevent a drop in connection reliability due to damage to the bonding pad 202 before the rewiring step. In particular, when a rewire is used as a wire for distributing signals as in this embodiment, the probe inspection becomes important.
- the inspection is performed without applying the probe 211 to the solder bump electrode 208 that has been formed, the deformation of the solder bump electrode 208 can be prevented, and the curved surface of the solder bump electrode 208 can be prevented.
- the probe 211 can be prevented from being damaged by an eccentric probe contact with the probe.
- an inexpensive cantilever-type probe can be used for the probe 211 as shown in FIG. 19 (F). Since the position of the bonding pad 202 of the normal wire bonding wafer and the inspection pad 209 described in this embodiment are the same in the chip plane, It is also possible to share the probe 211 with the wire bonding wafer.
- FIGS. 20 to 24 are perspective views showing the steps of manufacturing the flip-chip type semiconductor integrated circuit according to the present invention at each stage.
- FIG. 20 shows a completed stage of a conventional wire bonding connection wafer. That is, FIG. 18 (A) is a view showing the whole wafer 220 in the state of FIG. 18 (A), and the bonding pads 202 are formed on each chip 210.
- the wafer 220 shown in FIG. 20 is placed on the wafer 220 shown in FIG. 18 (B), (C), (C) and FIG. ),
- the lower insulating layer 204, the rewiring 205, the surface insulating layer 206, and the bump electrode base metal 207 are formed.
- a wafer 220 in which the bump electrode base metal 207 shown in the figure is formed is obtained.
- the state of FIG. 21 corresponds to the state of FIG. 19 (E) in cross section.
- the tips of the plurality of probes 2 11 are simultaneously brought into contact with a plurality of test pads 209 (not shown in FIG. And perform a probe test using the fixed probe card 221.
- a plurality of probes 211 into contact with a plurality of test pads 209 at the same time, one or a plurality of test pads 209 of a chip 210 are simultaneously tested, and a contact position is determined.
- the probe inspection is performed for all the chips 210 on the wafer 220 by sequentially moving and inspecting.
- the same or similar separate probe card 221 can be used to perform function selection and defect remedy simultaneously or ii ⁇ .
- solder paste printing method As shown in the figure, a solder print mask 222 having an opening 223 corresponding to the arrangement of the bump electrode base metal 207 on the surface of the wafer 220 is aligned on the wafer 220. Overlay and print solder paste 2 25 with squeegee 2 2 4. Immediately after printing, as shown in the cross-sectional view in the figure, the solder paste 225 is printed flat on a slightly larger area than the bump electrode base metal 207. When the wafer is heated at the opening of the riff to melt the solder paste 225, the solder agglomerates into a spherical shape and the solder bump electrode 208 is formed strongly.
- the wafer 220 after the formation of the bump electrode 208 is cut and separated into individual chips 210 by a dicing blade 220 as shown in FIG.
- a finished product of the integrated circuit device can be obtained. Burn-in inspection, performance, appearance, etc. as necessary for the finished product Various final inspections are performed, and the product is shipped after performing the specified marking and packaging.
- FIG. 25 shows the manufacturing process flow of the flip-chip type semiconductor integrated circuit device of the present invention after the rewiring forming process in four different ways (a), (b), (c), and (d). It is shown.
- the rewiring formation S 1, 206 forming the rewiring 205 on the insulating layer 204 is described. Formation of a surface insulating layer forming an insulating layer such as S2, forming a base metal for a bump electrode such as S207, and forming a base metal for a bump electrode 290 forming a base metal 297 of an inspection pad 209, etc.
- probe inspection S5 such as mode setting by the antifuse 1 program, defect relief S6, such as defective bit replacement by the antifuse 1 program, and bump electrode formation
- bump formation S7 individual dicing for dicing chips from the wafer (dicing) S8, burnin S9, and final inspection S10.
- the manufacturing flow shown in FIG. 25 (a) is a manufacturing flow in the case where a burn-in S9, that is, a continuous operation test at a high temperature is performed for each chip after the individual cutting S8.
- a burn-in S9 that is, a continuous operation test at a high temperature is performed for each chip after the individual cutting S8.
- the spacing between solder bump electrodes is wider than the spacing between bonding pads (approximately 60 to 150 m) by rewiring (approximately 0.5 to: L. O mm).
- the burn-in socket used for the BGA (ball grid array) type CSP (chip size package) burn-in can be easily performed on a chip basis.
- a special bump electrode force is formed on the chip, and the arrangement pattern of the bump electrodes is made to correspond to the electrode arrangement pattern of the burn-in socket. Since there is no need to prepare a new burn-in socket with the specified specifications, a flip-chip type semiconductor integrated circuit device can be assembled. Cost can be reduced.
- burn-in S9 is performed at the wafer stage before individual cutting S8.
- FIG. 25 (b) shows the case where a bin is performed before the formation of the solder bump electrode by using the inspection pad 209 or the bump base metal 207 before the formation of the solder bump electrode 208. This is a manufacturing flow. Since the burn-in electrical connection is made without using the bump electrode, the deformation of the solder bump electrode due to the contact of the non-socket under high temperature environment can be prevented.
- burn-in insect such as a socket can be easily applied to the inspection pad 209 without obstructing the solder bump electrode 209. Can be.
- burn-in is performed at the wafer stage, multiple chips can be burned-in at once, and it is possible to improve inspection throughput.
- FIG. 25 (c) shows a manufacturing flow in the case of performing the binning after the formation of the solder bump electrodes.
- the burn-in contact is brought into contact with the solder bump electrode 208.
- the solder bump electrode 208 is easily deformed at the time of burn-in, but there is a risk of damaging or deteriorating the bump electrode base metal 207. This makes it possible to form a highly reliable under bump metal and a rewiring with high reliability. In this case, too, the burn-in is performed at the stage of the roof similarly to FIG. It is possible to improve the inspection output.
- FIG. 25 (d) the process of forming the surface insulating layer S2 and the process of forming the bump electrode base metal S3 in each flow of FIGS. 25 (a) to (c) are interchanged.
- This is a manufacturing flow, and the steps after the function selection step are common to any of the manufacturing flows in FIGS. 25 (a) to (c).
- the relationship between FIGS. 25 (a) to (c) and FIG. 25 (d) is that, in the manufacturing flow of FIG. Since they are formed in steps, the formation cost of the bump electrode base metal can be reduced as compared with the manufacturing flow of FIGS. 25 (a) to (c).
- the function selection S 4, the probe inspection S 5, and the defect relief S 6 are continuously performed.
- all of these three processes can be performed only by electrical processing by bringing the probe into contact with the ⁇ Eno ⁇ (using a laser to cut the fuse). And without rewiring changes), so that three processes are processed in a single probing (ie, without probing again after probing for another chip). It is possible to simplify the process. In this case, function selection and remedy can be considered in the broader probe inspection.
- solder bump electrode formation S9 is collectively performed at the wafer stage before the individual cutting S8, and the solder bump electrodes are formed for each individual chip.
- Solder bump electrodes can be formed more efficiently than conventional BGA and CSP manufacturing processes.
- function selection S 4. Performing the three steps of probe inspection S5 and defect relief S6 before forming the solder bump electrode S7 enables easy probing without bumps on the solder bumps. .
- the function selection S4 can be performed after the probe inspection S5 or the defect remedy S6. If the function selection S 4 is performed before the probe inspection S 5, only the functions selected in advance need to be inspected at the time of the probe inspection S 5. Can be improved.
- Function selection may be implemented by rewiring. In other words, the process up to the formation of the upper circuit and the upper circuit is the same, and in the DRAM example, the bit configuration is changed to X16 bits, x32 bits, X64 bits, etc. by the rewiring formation process.
- the conventional bonding options that are set may be implemented by rewiring.
- the demand ratio among the varieties obtained by the function selection S4 constantly changes according to market trends. Therefore, in order to flexibly respond to changes in demand and to minimize the amount of inventory for each product type, it is desirable to have inventory before selection of functions, and the process after selection of functions must be carried out. It is desirable to be able to respond as quickly as possible.
- an anti-fuse for function selection the same reproduction pattern can be applied to all types, and can be kept in stock just before bump electrodes are formed. As a result, it is possible to produce the required variety in a short period of time in response to a change in demand, and it is possible to reduce the stock amount.
- the function selection S4 by the program element can be performed after the formation of the bump electrodes S7.
- an electrode for applying a voltage to the program element for selecting a function needs to be exposed on the surface of the semiconductor integrated circuit in the same manner as the protruding electrode.
- the semiconductor integrated circuits can be stocked after most of them are finished, inventory management is easy.
- FIG. 26 is a schematic sectional view of another embodiment of the semiconductor integrated circuit device according to the present invention.
- the illustrated circuit elements and wirings are formed on the main surface side of the semiconductor chip as described above.
- a pad force is formed by the uppermost wiring.
- it is connected to the bump electrode by the rewiring as the conductive layer.
- a first-layer organic insulating film made of polyimide is formed except for an opening where a pad is formed, and the force is omitted. Rewiring is formed.
- FIG. 26 (A) is different from the embodiment of FIG. 1 in that one bump electrode, one pad, and a force rewiring are connected.
- the rewiring shown in FIG. 26 (B) is not particularly limited, but is provided so as to intersect with the rewiring shown in FIG. 26 (A).
- the rewiring connected to the pad and the rewiring connected to the bump side are connected by wiring such as the uppermost A1 (aluminum) line formed in the same step as the pad. Therefore, the rewiring shown in FIG. 26 (A) is provided on the first-layer organic insulating film (not shown) on the uppermost line A1 for connecting the two rewirings.
- the rewiring of this embodiment in addition to the rewiring for connecting the pads and the bumps in a one-to-one correspondence as shown in the figure, for example, in FIG.
- the rewiring provided so as to intersect with the one used in the embodiment of FIG. 11 as a part of the signal line or the power supply line, for example, a signal wiring for connecting pads, or The power supply wiring for connecting the bump and the bump may be used.
- FIG. 27 shows still another embodiment of the semiconductor integrated circuit device according to the present invention.
- An example schematic diagram is shown.
- FIG. 27 (A) shows a schematic cross-sectional structure
- FIG. 27 (B) shows a circuit pattern.
- This embodiment shows a modified column of the embodiment of FIG. 26, in which the wiring force formed on one main surface side of the semiconductor chip connecting the rewirings is applied to the uppermost layer (M 4).
- M 4 the uppermost layer
- the lower layer wiring for example, the third layer wiring M3 is combined and, for example, the bump and the pad are connected as shown in FIG. 7 As shown in Fig.
- the pad is connected to one end of the rewiring by a contact.
- the other end of the rewiring is connected to one end of the M4 wiring by a contact, and the other end is connected to one end of the M3 wiring by a contact.
- the other end of the M3 @ d line is connected to one end of the M4 wiring by a contact. O This causes the first intersection with the signal line or the like.
- the other end of the M4 wiring is connected to one end of the M3 wiring by a contact at an intersection with the signal line or the like.
- the other end of the M3 wiring is connected to one end of the M4 wiring by a contact. Then, by connecting the other end of the M4 wiring to the rewiring connected to the bump, the pad is electrically connected to the bump.
- the other wiring (M 4) and rewiring at the intersection are omitted.
- FIG. 28 is a plan view of still another embodiment of the semiconductor integrated circuit device according to the present invention.
- the semiconductor integrated circuit device of this embodiment is directed to a memory circuit such as a static RAM, and the layout of rewiring and bump electrodes and pads connected thereto. It is shown.
- the bump electrodes are indicated by triangles, and the pads are indicated by small mouths. These bump electrodes and pads are interconnected by rewiring. Also in this embodiment, the rewiring is divided into two types, one for a DC voltage and the other for an AC signal, according to its function. For AC signals, one bump electrode and one pad are connected in a one-to-one correspondence, similar to rewiring at the wafer and level csp, and address and control signal inputs and data Used for input and output. The redistribution for each of these signals should be made relatively small to accommodate the high speed of the signals transmitted through them, and to reduce the parasitic capacitance and to allow for multiple pads to be provided at high density. The rewiring layer having the determined wiring width is used.
- a re-wiring layer having a large wiring width extending along the central portion of the semiconductor chip and the periphery of the chip is provided to supply a step-down voltage formed by an internal step-down circuit.
- the step-down voltage formed by the step-down voltage circuits provided at the left and right ends of the central portion of the chip is transmitted to the redistribution layer, and is distributed to the periphery of the chip as the operating voltage of the internal circuit by a contact. For example, if the power supply voltage is 3.3 V, the step-down voltage is a low voltage such as 1.5 V.
- FIG. 29 is a plan view of still another embodiment of the semiconductor integrated circuit device according to the present invention.
- the semiconductor integrated circuit device of this embodiment is a modification of the embodiment of FIG. This figure shows an enlarged half of the memory chip shown in FIG. In this embodiment, although not particularly limited, the rewiring connecting one bump electrode and one pad in one-to-one correspondence is crossed.
- the function is changed by changing the rewiring pattern while using the same arrangement of bumps and pads.
- a function equivalent to a conventional bonding option or the like can be provided.
- the intersection is used to reduce the parasitic capacitance and minimize the distance in order to achieve high speed transmission of the signal transmitted through it.
- Such an intersecting technique of the rewiring can be realized by using the uppermost wiring and the lower wiring formed on the semiconductor substrate as in the embodiment of FIGS. 26 and 27. You can do it.
- a circuit element and wiring constituting a circuit and a first electrode electrically connected to the circuit are provided on one main surface of the semiconductor substrate, and an organic circuit is formed on the circuit except for a surface portion of the first electrode.
- the area of the first and second external connection electrodes is formed larger than the area of the first electrode, thereby forming the area on the semiconductor substrate.
- the effect is that external connection means such as bumps ⁇ can be obtained while achieving high integration of the elements and wirings to be formed.
- a second electrode electrically connected to the circuit is further provided on the one main surface, and the first and second external connection electrodes, the first electrode, and the second electrode are provided. Is electrically connected by the conductive layer, an effect is obtained that a uniform voltage can be stably supplied to a circuit element formed on a semiconductor substrate.
- solder balls are provided on the first and second external connection electrodes. In this way, the manufacturing capability in the process and the process can be improved, and the effect that the semiconductor integrated circuit device can be easily and stably mounted can be obtained.
- An organic insulating film is formed on the circuit above except for the openings on the surfaces of the first electrode and the second electrode, and a conductive layer for electrically connecting the first electrode and the second electrode is formed on the organic insulating film.
- a first external connection electrode and a second external connection electrode are further provided on the organic insulating film, and the conductive layer is formed on the first external connection electrode and the second external connection electrode.
- the first external connection electrode and the second external connection By making the area of the connection electrode larger than the areas of the first electrode and the second electrode, external connection of bump electrodes and the like can be achieved while achieving high integration of elements and wiring formed on the semiconductor substrate. The effect that means can be obtained is obtained.
- a first external connection electrode is further provided on the organic insulating film, and the conductive layer is connected to the first external connection electrode.
- a voltage forming circuit for receiving a first voltage is further provided on one main surface of the semiconductor substrate, and a second voltage different from the first voltage is formed by the voltage forming circuit.
- a second voltage different from the first voltage is formed by the voltage forming circuit.
- a clock recovery circuit for receiving a first clock is further provided on one main surface of the semiconductor substrate, and a second clock corresponding to the first clock is provided by the clock recovery circuit. Output and by the above conductive layer By distributing the second clock, it is possible to obtain an effect that the internal clock synchronized with the externally supplied clock can be efficiently distributed to each circuit formed on the semiconductor substrate.
- the conductor layers can be arranged so as to cross each other by connecting the conductor layers at a part thereof through wiring provided on one main surface of the semiconductor substrate. This has the effect that the arrangement of signal lines and power supply lines can be facilitated.
- a circuit element and wiring constituting a circuit and a first electrode and a second electrode electrically connected to the circuit are provided on one main surface of the semiconductor substrate, and the surfaces of the first and second electrodes are provided.
- An organic insulating film is formed on the circuit except for the portion, and first and second external connection electrodes are provided on the organic insulating film, and the first and second external connection electrodes and the first and second electrodes are provided.
- a conductor W1 for electrically connecting each of the semiconductor layers to the organic insulating film, and one of the conductor layers is connected to a wiring provided on one main surface of the semiconductor substrate at an intersection thereof.
- the invention made by the inventor has been specifically described based on the embodiment, the invention of the present application is not limited to the embodiment, and may deviate from the gist of the invention. Needless to say, various changes can be made within the range that does not exist.
- various embodiments can be employed for the structure and material of the S2 spring formed on the semiconductor chip.
- the semiconductor integrated circuit device provided with the bump electrodes described above has a multi-chip module configuration in which a plurality of devices are mounted on a single mounting substrate, and a semiconductor device formed by assembling two semiconductor chips into a stacked structure.
- the present invention can also be applied to a semiconductor integrated circuit device having a multi 'chip' package configuration constituting a body integrated circuit device.
- the present invention can be widely used for a semiconductor integrated circuit device that forms a package in a wafer process.
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2003-7003105A KR20030069987A (ko) | 2000-12-18 | 2001-12-17 | 반도체 집적회로 장치 |
JP2002551903A JP4010406B2 (ja) | 2000-12-18 | 2001-12-17 | 半導体集積回路装置 |
US10/362,661 US6963136B2 (en) | 2000-12-18 | 2001-12-17 | Semiconductor integrated circuit device |
US11/202,352 US7547971B2 (en) | 2000-12-18 | 2005-08-12 | Semiconductor integrated circuit device |
US12/453,383 US7808107B2 (en) | 2000-12-18 | 2009-05-08 | Semiconductor integrated circuit device |
US12/805,261 US7982314B2 (en) | 2000-12-18 | 2010-07-21 | Semiconductor integrated circuit device |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2000383728 | 2000-12-18 | ||
JP2000-383728 | 2000-12-18 | ||
JP2001161630 | 2001-05-30 | ||
JP2001-161630 | 2001-05-30 |
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US10362661 A-371-Of-International | 2001-12-17 | ||
US11/202,352 Continuation US7547971B2 (en) | 2000-12-18 | 2005-08-12 | Semiconductor integrated circuit device |
Publications (1)
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WO2002050898A1 true WO2002050898A1 (fr) | 2002-06-27 |
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PCT/JP2001/011039 WO2002050898A1 (fr) | 2000-12-18 | 2001-12-17 | Dispositif a circuit integre semi-conducteur |
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US (4) | US6963136B2 (ja) |
JP (1) | JP4010406B2 (ja) |
KR (1) | KR20030069987A (ja) |
CN (1) | CN100565847C (ja) |
TW (1) | TW577152B (ja) |
WO (1) | WO2002050898A1 (ja) |
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- 2001-12-17 JP JP2002551903A patent/JP4010406B2/ja not_active Expired - Fee Related
- 2001-12-17 US US10/362,661 patent/US6963136B2/en not_active Expired - Lifetime
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US9607945B2 (en) | 2003-10-20 | 2017-03-28 | Rohm Co., Ltd. | Semiconductor device comprising power elements in juxtaposition order |
US20070262419A1 (en) * | 2003-10-20 | 2007-11-15 | Rohm Co., Ltd. | Semiconductor Device |
JP4671261B2 (ja) * | 2003-11-14 | 2011-04-13 | ルネサスエレクトロニクス株式会社 | 半導体装置 |
JP2005150391A (ja) * | 2003-11-14 | 2005-06-09 | Renesas Technology Corp | 半導体装置 |
US8063478B2 (en) | 2003-12-26 | 2011-11-22 | Renesas Electronics Corporation | Method of manufacturing a semiconductor device |
JP2005191436A (ja) * | 2003-12-26 | 2005-07-14 | Renesas Technology Corp | 半導体装置およびその製造方法 |
US8319328B2 (en) | 2003-12-26 | 2012-11-27 | Renesas Electronics Corporation | Method of manufacturing a semiconductor device |
JP4537702B2 (ja) * | 2003-12-26 | 2010-09-08 | ルネサスエレクトロニクス株式会社 | 半導体装置およびその製造方法 |
US7847388B2 (en) | 2003-12-26 | 2010-12-07 | Renesas Electronics Corporation | Method of manufacturing a semiconductor device |
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US8178968B2 (en) | 2007-11-02 | 2012-05-15 | Seiko Epson Corporation | Electronic component |
JP2009135389A (ja) * | 2007-11-30 | 2009-06-18 | Hynix Semiconductor Inc | ウエハーレベル半導体パッケージおよびその製造方法 |
JP2012004210A (ja) * | 2010-06-15 | 2012-01-05 | Renesas Electronics Corp | 半導体集積回路装置およびその製造方法 |
JP2013157436A (ja) * | 2012-01-30 | 2013-08-15 | Fujitsu Semiconductor Ltd | 集積回路装置及び試験方法 |
Also Published As
Publication number | Publication date |
---|---|
US20060006480A1 (en) | 2006-01-12 |
US6963136B2 (en) | 2005-11-08 |
CN1449581A (zh) | 2003-10-15 |
TW577152B (en) | 2004-02-21 |
US7547971B2 (en) | 2009-06-16 |
JP4010406B2 (ja) | 2007-11-21 |
US20100308458A1 (en) | 2010-12-09 |
US20090219069A1 (en) | 2009-09-03 |
US7808107B2 (en) | 2010-10-05 |
US20040007778A1 (en) | 2004-01-15 |
CN100565847C (zh) | 2009-12-02 |
US7982314B2 (en) | 2011-07-19 |
JPWO2002050898A1 (ja) | 2004-04-22 |
KR20030069987A (ko) | 2003-08-27 |
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