WO2006132147A1 - 発光素子実装用ホーロー基板とその製造方法、発光素子モジュール、照明装置、表示装置及び交通信号機 - Google Patents
発光素子実装用ホーロー基板とその製造方法、発光素子モジュール、照明装置、表示装置及び交通信号機 Download PDFInfo
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- WO2006132147A1 WO2006132147A1 PCT/JP2006/311093 JP2006311093W WO2006132147A1 WO 2006132147 A1 WO2006132147 A1 WO 2006132147A1 JP 2006311093 W JP2006311093 W JP 2006311093W WO 2006132147 A1 WO2006132147 A1 WO 2006132147A1
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- emitting element
- light emitting
- light
- electrode
- substrate
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/64—Heat extraction or cooling elements
- H01L33/641—Heat extraction or cooling elements characterized by the materials
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133608—Direct backlight including particular frames or supporting means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/44—Structure, shape, material or disposition of the wire connectors prior to the connecting process
- H01L2224/45—Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
- H01L2224/45001—Core members of the connector
- H01L2224/45099—Material
- H01L2224/451—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof
- H01L2224/45138—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof the principal constituent melting at a temperature of greater than or equal to 950°C and less than 1550°C
- H01L2224/45144—Gold (Au) as principal constituent
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/181—Encapsulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
- H01L33/60—Reflective elements
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/05—Insulated conductive substrates, e.g. insulated metal substrate
- H05K1/053—Insulated conductive substrates, e.g. insulated metal substrate the metal substrate being covered by an inorganic insulating layer
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/18—Printed circuits structurally associated with non-printed electric components
- H05K1/182—Printed circuits structurally associated with non-printed electric components associated with components mounted in the printed circuit board, e.g. insert mounted components [IMC]
- H05K1/183—Components mounted in and supported by recessed areas of the printed circuit board
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S362/00—Illumination
- Y10S362/80—Light emitting diode
Definitions
- Hollow substrate for mounting light emitting element and manufacturing method thereof, light emitting element module, lighting device, display device, and traffic signal device
- the present invention relates to a light-emitting element mounting enamel substrate for mounting a plurality of light-emitting elements such as light-emitting diodes (hereinafter referred to as LEDs).
- Light emitting element mounting hole with improved dimensional accuracy and heat dissipation when mounted on a substrate, a manufacturing method thereof, a light emitting element module having a light emitting element mounted on the substrate, an illumination device having the light emitting element module, a display
- the present invention relates to a device and a traffic signal device.
- light emitting elements have come to be applied to lighting equipment, backlights of liquid crystal imaging devices, traffic signals, and the like, and further improvement in light emission intensity is required.
- Increasing the amount of current applied can increase the light emission intensity of the light emitting element.
- the light emitting element simultaneously generates heat, and thus it is necessary to efficiently dissipate heat. If the heat radiation is not sufficient, the light emitting element becomes hot during lighting and the light emission efficiency decreases, and the target light emission intensity cannot be obtained.
- a mortar-shaped reflecting cup portion having a reflecting surface on a slope as shown in FIG. It is desirable to provide a light emitting element on the bottom surface. By forming the reflective cup portion in a mortar shape, it is possible to control the direction of light and also to hold a resin that seals the light emitting element.
- FIG. 1 is a cross-sectional view illustrating a light-emitting element module using this single-hole substrate.
- This light-emitting element module 2 has a hollow metal layer 5 having a glass force on the surface of a core metal 4 having a force such as a low carbon steel plate.
- a light-emitting element 3 such as an LED is mounted on the bottom surface of the reflective cup portion 7 of the substrate.
- the light emitting element 3 is mounted on one electrode of a pair of electrodes 6, 6 extending to the bottom surface of the reflecting cup portion 7, and is electrically connected to the other electrode by a gold wire 8.
- the reflective cup portion 7 on which the light emitting element 3 is mounted is sealed with a sealing resin 9.
- This enamel substrate can be formed into a free shape by covering the core metal, and an enamel layer made of glass can be formed on the surface as it is, so that any shape can be formed. In this state, electrical insulation can be secured.
- a hollow substrate having a reflective cup structure as shown in FIG. 1 needs to be processed so that the core metal has the shape of a reflective cup.
- press force is preferable from the viewpoint of power productivity and processing cost, such as adding by a drill and drawing by a metal press.
- an insulating substrate such as glass is laminated, and an electrode for mounting the light emitting element or an electrode for forming an electric circuit is formed on the substrate, thereby obtaining a hollow substrate for mounting a light emitting element.
- the thermal conductivity particularly the thermal conductivity in the direction parallel to the substrate, deteriorates, and it has become a component that sufficient heat dissipation cannot be obtained. If the heat radiation is not sufficient, the light emitting element becomes high temperature during lighting, so that the light emission efficiency is lowered and the target light emission intensity cannot be obtained. In addition, when used for a long period of time, the reliability of the light emitting element is lowered, and there is a high possibility of malfunctions such as non-lighting. In addition, if there is a portion where the glass layer is exposed, there is a problem that the reflection at that portion becomes worse and the amount of light emitted as a whole is reduced.
- a pad printing apparatus as an apparatus that can print the inner surface of such a recess.
- the pad printing device applies ink to the plate surface on which the recesses are formed according to the image to be printed, and the ink that has flowed into the recesses is covered with an ink transfer medium called a pad. Printing is performed by transferring onto a printed material. Since such a pad is used, the pad printing apparatus has a feature that it can print not only on a flat surface but also on a curved surface. By taking advantage of this pad printing method, it is possible to form an electrode on the inner surface side of the mortar-shaped reflection cup portion.
- the present invention has been made in view of the above circumstances, and has a light emitting element mounting enamel substrate having excellent heat dissipation and excellent bottom flatness of the reflecting cup portion, a method for manufacturing the same, and a light emitting element having a light emitting element mounted on the substrate.
- An object is to provide a module, a lighting device having the light emitting element module, a display device, and a traffic signal.
- the present invention provides a reflective cup having a core metal, a hollow layer coated on the surface of the core metal, a light emitting element mounting surface, and a flat bottom surface and a surrounding slope portion.
- Light-emitting element mounting comprising: a portion, and an electrode for energizing the light-emitting element, provided on the light-emitting element mounting surface and having a thickness in the reflective cup portion in the range of 5 ⁇ m to 100 ⁇ m
- An enamel substrate is provided.
- the thickness of the electrode in the reflection cup portion is in the range of 5 ⁇ m to 50 ⁇ m.
- the present invention also includes a step of baking a hollow material on a core metal formed with a reflective cup portion having a flat bottom surface and a slope portion around the metal material to form a hollow layer, and the reflective cup portion Forming an electrode for energizing the light emitting element on the light emitting element mounting surface provided with a thickness of the electrode in the reflecting cup portion in a range of 5 ⁇ m to 100 ⁇ m.
- a method for manufacturing a hollow substrate for mounting a light emitting element is provided.
- the electrode is preferably formed by printing a conductive paste on a hollow layer by a pad printing method and sintering it.
- the present invention also provides a light emitting element module comprising the light emitting element mounting enamel substrate according to the present invention and the light emitting element mounted on the light emitting element mounting enamel substrate.
- the present invention also provides a lighting device, a display device, and a traffic signal having the light emitting element module according to the present invention.
- the invention's effect is to provide a lighting device, a display device, and a traffic signal having the light emitting element module according to the present invention.
- the enamel substrate for mounting a light emitting element of the present invention has a thickness of the electrode in the reflection cup portion in the range of 5 ⁇ m to LOO m, so that heat dissipation, flatness of the reflection cup portion, and emission are achieved. It is possible to provide a light emitting element module that is excellent from any viewpoint of the amount of light.
- a smoothing process for adjusting the shape of the electrodes in the reflecting cup portion is added, thereby improving the heat dissipation and the reflecting cup portion. Flatness and the amount of emitted light can be obtained.
- the light-emitting element module of the present invention is formed by mounting the light-emitting element on the light-emitting element mounting enamel substrate according to the present invention described above, a light-emitting element module with a large amount of light with good heat dissipation of the substrate can be provided. .
- FIG. 1 is a cross-sectional view illustrating the structure of a light emitting element module.
- FIG. 2 is a cross-sectional view for explaining the cause of poor flatness of an electrode that occurs during electrode formation.
- the present invention is a light emitting element mounting enamel substrate 1 having a reflective cup portion 7 on a light emitting element mounting surface, and at least electrodes 6 formed on the light emitting element mounting surface.
- the optimum range of the thickness of the electrode 6 formed by baking on the reflecting cup portion 7 is proposed.
- the present invention is characterized in that the thickness of the electrode 6 in the reflection cup portion 7 is in the range of 5 ⁇ m to 100 ⁇ m, preferably in the range of 5 m to 50 m. This makes it possible to obtain a good substrate from the viewpoints of heat dissipation, flatness of the reflective cup portion, and the amount of emitted light.
- the thickness of the electrode 6 in the reflecting cup 7 is less than 5 m, the appearance will be poor and sufficient heat dissipation will not be obtained.
- the thickness of the electrode 6 in the reflection cup 7 is 100 m. If it exceeds, flatness will deteriorate even if a smoothing treatment after sintering, which will be described later, is performed, and it may be difficult to mount the light emitting element.
- a smoothing process for adjusting the shape of the electrode 6 in the reflecting cup portion 7 is added, thereby providing better heat dissipation and flatness of the reflecting cup portion. The amount of light emitted can be obtained.
- the basic configuration of the light-emitting element module according to the present invention is, for example, as shown in FIG. 1, in which the surface of the core metal 4 is covered with a hollow layer 5, and a mortar-shaped reflection cup portion 7 is provided.
- a light-emitting element mounting hollow substrate 1 having an electrode for energizing the light-emitting element 3 is provided on the light-emitting element mounting surface, and a light-emitting element 3 such as an LED is mounted on the bottom surface of the reflective cup portion 7 of the substrate.
- the present invention is not limited to this. In the example of FIG.
- the light emitting element 3 is mounted on one electrode of a pair of electrodes 6 and 6 extending to the bottom surface of the reflecting cup portion 7 and is electrically connected to the other electrode by a gold wire 8. ing.
- the reflective cup portion 7 on which the light emitting element 3 is mounted is sealed with a sealing grease 9.
- the reflection cup portion 7 is formed in a mortar shape or a groove shape having a flat bottom surface and a slope surface.
- the slope angle of the slope surface is about 30 ° to 70 °, preferably about 40 ° to 60 °.
- the material of the core metal 4 constituting the enamel substrate 1 for mounting the light-emitting element is not particularly limited as long as it is a metal capable of firmly forming the enamel layer 5 on the surface.
- a low carbon steel plate Etc. are used.
- the enamel layer 5 is formed by baking glass powder on the surface of the core metal 4.
- the electrode 6 is preferably formed by printing and baking a conductive paste such as silver paste or copper paste along a predetermined pattern by a nod printing method.
- the light emitting element 3 mounted on the enamel substrate 1 for mounting the light emitting element an LED is preferable.
- white LED is preferable as the light emitting element 3.
- a blue LED made of gallium nitride (GaN) semiconductor power is combined with one or more phosphors that are excited by blue light and emit visible light other than blue, such as yellow. It is desirable to use a white LED.
- the phosphor is desirably mixed and dispersed in a sealing resin 9 for sealing a light emitting element mounted on a substrate.
- the light emitting element 3 is mounted on the bottom surface of the reflection cup portion 7. One electrode terminal of the light emitting element 3 is electrically connected to one electrode 6, and the other electrode terminal of the light emitting element 3 is electrically connected to the other electrode 6 adjacent to each other by a wire 8 (bonding wire). Has been.
- a metal plate for core metal production is prepared, cut into a desired shape, and further machined to form a desired number of reflecting cup portions 7 to be light emitting element mounting positions, thereby producing core metal 4. To do.
- the core metal 4 is immersed in a liquid in which glass powder is dispersed in an appropriate solvent, a counter electrode is disposed in the vicinity of the core metal 4, and a voltage is applied between the core metal 4 and the counter electrode. Is applied, and the glass powder is electrodeposited on the surface of the core metal 4.
- the core metal 4 is pulled up from the solution, dried, placed in a heating furnace and heated in a predetermined temperature range, and glass powder is baked on the surface of the core metal 4 to form a hollow layer 5 to produce a hollow substrate. To do.
- a conductive paste such as a silver paste or a copper paste is printed along the formation pattern of the electrode 6 by a pad printing method and dried. This coating amount is adjusted so that the thickness of the electrode 6 in the reflection cup portion 7 is in the range of 5 ⁇ m to 100 ⁇ m, preferably in the range of 5 ⁇ m to 50 ⁇ m after sintering. Thereafter, sintering is performed to form the electrode 6 and necessary circuits. By performing the above steps, the light-emitting element mounting enamel substrate 1 is obtained.
- the pressed electrode 6 having a pressing surface conforming to the surface shape of the substrate, preferably a pressed member having an elastic material on the pressing surface, is preferably pressed against the sintered electrode 6 It is desirable to carry out the conversion process.
- the light emitting element 3 is mounted on the bottom surface of the reflection cup portion 7 of the light emitting element mounting enamel substrate 1 manufactured as described above by die bonding, and wire bonding is performed. Electrically connects to electrode 6. Thereafter, a protective resin or a resin mixed and dispersed with a phosphor is filled and cured in the reflective cup portion 7 to seal the light emitting element 3 with the resin. Thereby, the light emitting element module 2 is manufactured.
- Thickness of low carbon steel with a thickness of 1.5 mm is cut to a size of 10 x 10 mm, and is 0.6 mm deep, bottom diameter 2. Omm, tilt angle 45 degrees by drill or metal press A core metal was produced by forming a reflective cup part.
- glass powder was sintered on the surface of the core metal on which the reflective cup portion was formed, and a 50 m thick enamel layer was formed to produce an enamel substrate.
- the electrode pattern was printed with a silver paste and then dried.
- the method for drying the conductive paste includes a step of drying the printed surface on which the conductive paste is printed in a far-infrared drying oven until the conductive paste is dry to the touch, and a printed material on which the conductive paste is touch-dried. Is dried by performing a complete drying process in a hot air circulating drying oven. Specifically, the printed material is first dried in a far-infrared drying oven until the conductive paste is dry to the touch. Finger touch drying is also called pre-drying, and is a state where the printed or applied conductive paste is dried to the extent that it does not adhere even if touched with a finger.
- Far-infrared rays can heat a conductive paste with good penetration into the substance, and can be dried to some extent in a short time on both the surface and inside. For this reason, the evaporation of the solvent of the conductive paste is insufficient, the reaction of the resin is incomplete, and the original properties such as the hardness, adhesion and conductivity of the coating film are not obtained. It is dry enough to stack. The touch-dried substrates are stacked and dried completely in a hot air circulating drying oven.
- the thickness of the silver paste to be printed was varied in the range of 5 to 100 m, and the flatness, appearance, and heat dissipation of the bottom face of the reflecting cup at that time were evaluated. Table 1 shows the results of evaluation of flatness and appearance.
- the area required for mounting the light-emitting element was set to 500 m square at the center of the bottom of the reflector cup, and the maximum and minimum heights in that area were recorded.
- the target value is within 10 / z m, and pass / fail was judged by that value.
- a blue light emitting element (product name: XB900, manufactured by Cree) was die-bonded to the electrode of the substrate on the enamel substrate on which the electrode was formed, and further bonded to the opposite electrode using a gold wire. Thereafter, a sealing resin (thermosetting epoxy resin) was put in the reflection cup until the upper part was sufficiently raised by the surface tension.
- the light emitting device module was left at a constant temperature, and the voltage value after 1 second was measured at a low current value (10 mA).
- the reason for the low current value is that the device itself generates heat when a high current is applied, and the ambient temperature and the temperature of the device itself are added. Graph the relationship between voltage value and temperature.
- the ambient temperature was room temperature (25 ° C). At that time, a current of 350 mA was applied for 1 hour, then the current value was reduced to 10 mA, and the voltage value at that time was read.
- the relationship between the voltage value and the temperature was defined as the temperature (A) of the light emitting element, and the temperature (B) of the back surface of the substrate was simultaneously measured with a thermocouple.
- the thermal resistance value was obtained by dividing the temperature difference (A ⁇ B) between the light emitting element and the backside of the substrate by the applied power (current X voltage).
- the thermal resistance was almost constant at 17 to 18 ° CZW.
- the average thickness of the electrode was 2., there was variation from place to place, and it was difficult to measure well. In other words, when the average thickness of the electrode on the bottom of the cup is 2, the temperature of the substrate is not uniform in the direction parallel to the substrate, and good heat dissipation is obtained.
- the appropriate thickness of the electrode in the enamel substrate for mounting the light emitting element having the reflective cup portion was in the range of 5 ⁇ m to 50 ⁇ m.
- the thickness of the electrode on the light-emitting element mounting enamel substrate having the reflective cup portion can be improved by adding a smoothing step for adjusting the shape of the electrode in the reflective cup portion. It was confirmed that the value is suitable up to 100 ⁇ m.
- a copper paste is used as the conductive paste, and the reflective cup portion is provided as in the first embodiment.
- a hollow substrate was produced. Specifically, a reflective cup with a 1.5mm-thick low-carbon steel strip cut to a size of 10 x 10mm, a depth of 0.6mm, a bottom diameter of 2. lmm, and a slope angle of 45 degrees The surface of the metal plate was covered with glass to a thickness of 50 m. Next, an electrode was formed by pad printing with a copper paste as a conductive paste, and then dried.
- the thickness of the copper paste to be printed was varied in the range of 2 to 300 ⁇ m, and the flatness, appearance, and heat dissipation of the bottom surface of the reflective power portion were evaluated.
- the evaluation results are shown in Table 2.
- the temperature of the substrate is not uniform in the direction parallel to the substrate, and good heat dissipation is obtained.
- the case where one reflecting cup portion is formed on the enamel substrate has been described, but a plurality of reflecting cup portions may be provided on the enamel substrate.
- the sealing resin may be a thermosetting or ultraviolet curable epoxy resin, or a silicone resin.
- the light-emitting element used in the present invention may be a blue light-emitting element such as a nitride compound semiconductor or a green light-emitting element, or a red or infrared light-emitting element typified by GaP.
- a blue light emitting element such as a nitride compound semiconductor is mounted, and a blue excited yellow light emitting phosphor such as yttrium 'aluminum' garnet phosphor activated with cerium is encapsulated in the encapsulated resin. It may be contained in a white LED.
- a blue light emitting element such as a nitride compound semiconductor
- a blue excited yellow light emitting phosphor such as yttrium 'aluminum' garnet phosphor activated with cerium is encapsulated in the encapsulated resin. It may be contained in a white LED.
- a phosphor or the like since light is diffused, reflection on the surface of the reflection cup portion where the light hits the reflection cup portion becomes more important.
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE602006019243T DE602006019243D1 (de) | 2005-06-07 | 2006-06-02 | Hertsellungsverfahen für das Produzieren eines porzellanglasiertes Substrat zur Leuchtbauelementenanbringung |
KR1020077028452A KR100928309B1 (ko) | 2005-06-07 | 2006-06-02 | 발광소자 실장용 법랑 기판과 그 제조방법, 발광소자 모듈,조명장치, 표시장치 및 교통 신호기 |
EP06747123A EP1890340B1 (en) | 2005-06-07 | 2006-06-02 | Method for producing a porcelain enameled substrate for light-emitting device mounting. |
CN200680019593XA CN101189739B (zh) | 2005-06-07 | 2006-06-02 | 发光元件安装用珐琅基板及其制造方法、发光元件模块、照明装置、显示装置和交通信号机 |
US11/950,904 US7572039B2 (en) | 2005-06-07 | 2007-12-05 | Porcelain enamel substrate for mounting light emitting device and method of manufacturing the same, light emitting device module, illumination device, display unit and traffic signal |
US12/372,529 US8382345B2 (en) | 2005-06-07 | 2009-02-17 | Porcelain enamel substrate for mounting light emitting device and method of manufacturing the same, light emitting device module, illumination device, display unit and traffic signal |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005167499A JP4037423B2 (ja) | 2005-06-07 | 2005-06-07 | 発光素子実装用ホーロー基板の製造方法 |
JP2005-167499 | 2005-06-07 |
Related Child Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11950904 A-371-Of-International | 2006-06-02 | ||
US11/950,904 Continuation US7572039B2 (en) | 2005-06-07 | 2007-12-05 | Porcelain enamel substrate for mounting light emitting device and method of manufacturing the same, light emitting device module, illumination device, display unit and traffic signal |
US12/372,529 Continuation US8382345B2 (en) | 2005-06-07 | 2009-02-17 | Porcelain enamel substrate for mounting light emitting device and method of manufacturing the same, light emitting device module, illumination device, display unit and traffic signal |
Publications (1)
Publication Number | Publication Date |
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WO2006132147A1 true WO2006132147A1 (ja) | 2006-12-14 |
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PCT/JP2006/311093 WO2006132147A1 (ja) | 2005-06-07 | 2006-06-02 | 発光素子実装用ホーロー基板とその製造方法、発光素子モジュール、照明装置、表示装置及び交通信号機 |
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US (2) | US7572039B2 (ja) |
EP (1) | EP1890340B1 (ja) |
JP (1) | JP4037423B2 (ja) |
KR (1) | KR100928309B1 (ja) |
CN (1) | CN101189739B (ja) |
DE (1) | DE602006019243D1 (ja) |
TW (1) | TWI313938B (ja) |
WO (1) | WO2006132147A1 (ja) |
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WO2009029747A1 (en) * | 2007-08-29 | 2009-03-05 | Lighting Science Group Corporation | A light efficient led assembly including a shaped reflective cavity and method for making same |
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JP2010171130A (ja) * | 2009-01-21 | 2010-08-05 | Showa Denko Kk | ランプおよびランプの製造方法 |
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JP5915216B2 (ja) * | 2012-02-06 | 2016-05-11 | 大日本印刷株式会社 | リードフレーム及び半導体装置 |
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JP6277875B2 (ja) * | 2014-06-12 | 2018-02-14 | 豊田合成株式会社 | 発光装置及びその製造方法 |
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JP6128254B2 (ja) * | 2016-04-05 | 2017-05-17 | 大日本印刷株式会社 | リードフレーム及び半導体装置 |
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- 2006-06-02 EP EP06747123A patent/EP1890340B1/en not_active Expired - Fee Related
- 2006-06-02 DE DE602006019243T patent/DE602006019243D1/de active Active
- 2006-06-02 CN CN200680019593XA patent/CN101189739B/zh not_active Expired - Fee Related
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Publication number | Priority date | Publication date | Assignee | Title |
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Also Published As
Publication number | Publication date |
---|---|
TWI313938B (en) | 2009-08-21 |
JP2006344696A (ja) | 2006-12-21 |
EP1890340A1 (en) | 2008-02-20 |
US20090161366A1 (en) | 2009-06-25 |
CN101189739B (zh) | 2012-03-07 |
US20080079018A1 (en) | 2008-04-03 |
JP4037423B2 (ja) | 2008-01-23 |
EP1890340B1 (en) | 2010-12-29 |
US8382345B2 (en) | 2013-02-26 |
CN101189739A (zh) | 2008-05-28 |
KR100928309B1 (ko) | 2009-11-25 |
DE602006019243D1 (de) | 2011-02-10 |
EP1890340A4 (en) | 2009-09-30 |
TW200703726A (en) | 2007-01-16 |
KR20080007402A (ko) | 2008-01-18 |
US7572039B2 (en) | 2009-08-11 |
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