WO2004090487A1 - 多方向からの光を検出する光センサ、携帯通信機器及び表示方法 - Google Patents
多方向からの光を検出する光センサ、携帯通信機器及び表示方法 Download PDFInfo
- Publication number
- WO2004090487A1 WO2004090487A1 PCT/JP2004/003544 JP2004003544W WO2004090487A1 WO 2004090487 A1 WO2004090487 A1 WO 2004090487A1 JP 2004003544 W JP2004003544 W JP 2004003544W WO 2004090487 A1 WO2004090487 A1 WO 2004090487A1
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- WIPO (PCT)
- Prior art keywords
- display
- detection element
- housing
- detection
- light
- Prior art date
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Classifications
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
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- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
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- 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
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- H01L31/08—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof in which radiation controls flow of current through the device, e.g. photoresistors
- H01L31/10—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof in which radiation controls flow of current through the device, e.g. photoresistors characterised by at least one potential-jump barrier or surface barrier, e.g. phototransistors
- H01L31/101—Devices sensitive to infrared, visible or ultraviolet radiation
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- 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
- G02F1/133342—Constructional arrangements; Manufacturing methods for double-sided displays
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/04—Display device controller operating with a plurality of display units
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- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/0206—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
- H04M1/0208—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings characterized by the relative motions of the body parts
- H04M1/0214—Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/0206—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
- H04M1/0241—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings using relative motion of the body parts to change the operational status of the telephone set, e.g. switching on/off, answering incoming call
- H04M1/0245—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings using relative motion of the body parts to change the operational status of the telephone set, e.g. switching on/off, answering incoming call using open/close detection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2250/00—Details of telephonic subscriber devices
- H04M2250/12—Details of telephonic subscriber devices including a sensor for measuring a physical value, e.g. temperature or motion
Definitions
- the present invention relates to an optical sensor, and more particularly, to an optical sensor that detects light in multiple directions. Further, the present invention relates to a portable communication device, particularly to a folding portable communication device and a display method thereof. Background art
- Mobile communication devices include mobile phones, PDAs, foldable electronic organizers, mobile computers, etc., and these devices are required to have various functions such as sending and receiving e-mail, voice recognition, and capturing images with a small camera. .
- the amount of information to be displayed has increased, and higher visibility and higher image quality have been demanded.
- mobile phones which are a representative example of mobile communication devices, have a display size exceeding 2 inches and a resolution compatible with QVGA (Quarter VGA) is on the market.
- a display of a mobile phone is used in various environments such as outdoors and indoors.
- the visibility of the display is determined by the ambient brightness (that is, the illuminance on the display side.
- Illuminance is the luminous flux received by the unit area of the surface illuminated by light. Therefore, the illuminance on the display unit side indicates the ambient brightness.
- display information can be recognized due to the surrounding brightness even if the display brightness is low.
- the display is too bright compared to the surroundings, it is difficult to recognize the display contents, and the brightness of the display is slightly reduced. The better the display is, the better.
- it is preferable that the brightness of the display is high in the middle and in a dark place in order to recognize the display contents. Since the visibility of the display varies depending on the surrounding brightness, a sensor that detects the surrounding brightness (illuminance on the display unit side) is provided, and the brightness of the display is changed according to the surrounding brightness. There is a method to increase the quality.
- an EL (EleGtro Luminescence) display device When an EL (EleGtro Luminescence) display device is used for the display, a voltage or current corresponding to the luminance is supplied to the EL element to perform gray scale display.
- the EL element deteriorates over time due to factors such as time, and the degree of the deterioration depends on the three primary colors of RGB. Therefore, when performing multi-color display on an EL display device, the white balance must be controlled by adjusting the brightness of the three primary colors of RGB.
- a foldable mobile phone is (1) convenient to carry because of its small size compared to a non-foldable mobile phone, (2) a display unit is provided in the first housing, and an operation unit is provided in the second housing.
- the display area of the display unit can be increased, a large amount of information can be displayed at one time, and (3) there are few malfunction operations during standby.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2002-101160 (Page 6, FIG. 2 and FIG. 7) Disclosure of the Invention
- the power consumption of mobile phones has also increased with the increase in functions and display quality. If the battery is quickly consumed, there is a problem that a desired function cannot be used when needed, and low power consumption has been an issue.
- the present invention provides an optical sensor capable of detecting light from multiple directions with one component. It also provides a foldable information communication device and its information display method, which are compact, multifunctional, have low power consumption, can be manufactured at low cost, and are easy to operate when recognizing a display. I do. Means for solving the problem
- An optical sensor according to the present invention is characterized in that a plurality of detection elements are provided on a light-transmitting substrate, and the detection elements are connected in parallel.
- the folding portable communication device having two display units of the present invention has one optical sensor, and the optical sensor has a plurality of detection elements, and the detection elements are connected in parallel. It is characterized by
- the plurality of detection elements typically detect the illuminance on the first display unit side when the foldable portable communication device is open, and the second detection device when the foldable portable communication device is closed. This is to detect the illuminance on the display unit side, and to detect the luminance of the first display unit.
- a current is generated by a change in illuminance or luminance.
- the light sensor detects the illuminance and the luminance based on the current value.
- the luminance of the first display unit or the second display unit is adjusted according to the current value, and the display unit of the foldable portable communication device is displayed.
- the detection element that detects the illuminance of the first display unit and the detection element that detects the luminance of the first display unit when the foldable portable communication device is open may be the same detection element.
- the first display unit is a display unit facing an operation unit such as an operation button when the mobile phone is folded
- the second display unit is a folding unit when the foldable portable communication device is folded. It is a display unit outside the portable communication device.
- Such an optical sensor, a portable communication device, and a display method of the present invention based on the gist of the present invention can include the following configurations.
- a plurality of detection elements are connected in parallel on a light-transmitting substrate, and can detect light from multiple directions.
- the plurality of detection elements are a first detection element and a second detection element
- the first detection element includes a first electrode, a first semiconductor film, and a second detection element.
- the second detection element is formed by the first electrode, the second semiconductor film, and the third electrode. Note that the first electrode and the third electrode are formed using a light-transmitting conductive film, and the second conductive film is formed using a metal film.
- the plurality of detection elements are a first detection element, a second detection element, and a third detection element
- the first detection element is a first electrode
- the second detection element is formed of the first electrode, the second semiconductor film, and the third electrode
- the third detection element is formed of the first electrode. It is formed of an electrode, a third semiconductor film, and a fourth electrode. Note that the first electrode and the third electrode are formed using a light-transmitting conductive film, and the second electrode and the fourth electrode are formed using a metal film.
- the light-transmitting conductive film is formed using an indium oxide-tin oxide alloy, an indium oxide-zinc oxide alloy, or zinc oxide. Further, the metal film is a film containing an element of gold, copper, nickel, platinum, or silver.
- the first semiconductor film, the second semiconductor film, and the third semiconductor film are formed using an amorphous silicon film, a silicon film having a PIN junction, or a microcrystalline silicon film.
- the portable information device of the present invention has a first housing and a second housing connected to be openable and closable by a hinge portion, and the first housing has a first display portion and a second display portion.
- the second display unit is provided on a different surface, the second housing is provided with an operation unit, and the first display unit and the operation unit can be folded so as to face each other, It has an optical sensor in which a plurality of detection elements are connected in parallel.
- an optical sensor having a plurality of detection elements is provided in a first housing, and the plurality of detection elements are a first detection element and a second detection element.
- the first detection element detects the illuminance on the first display unit side when the first housing and the second housing are open, and the second detection element includes the second detection element. Detects the illuminance on the display side.
- an optical sensor having a plurality of detection elements is provided in a second housing, and the plurality of detection elements are a first detection element and a second detection element.
- the first detection element detects the illuminance on the first display unit side, and the first housing and the second housing.
- the second detection element detects the illuminance of the second display unit.
- the optical sensor may be provided inside a light-transmitting operation key of the operation unit.
- an optical sensor having a plurality of detection elements is provided in a first housing, and the plurality of detection elements are a first detection element, a second detection element, and a second detection element.
- the first detection element detects the illuminance on the first display unit side when the first housing and the second housing are open, and the second detection element Then, the illuminance on the second display unit side is detected, and the third detection element detects the luminance of the first display unit.
- the portable information device of the present invention has a first housing and a second housing connected to be openable and closable by a hinge portion, and the first housing has a first display portion and a second display portion.
- the second display unit is provided on a different surface, the second housing is provided with an operation unit, and the first display unit and the operation unit can be folded so as to face each other,
- the portable information device may further include: a fifth unit configured to display the first display unit in a display state and detect the luminance in a state where the first housing and the second housing are folded; Sixth means for controlling and displaying the luminance of the first display unit based on the detection result of the means and the detection result of the first means.
- the first display unit and the second display unit are formed by a liquid crystal display device or an EL display device.
- the EL display device may be a display device capable of emitting light on both sides.
- the first housing and the second housing are opened. Detecting a first detection result by detecting illuminance on the first display unit side by a first detection element, controlling and displaying the luminance of the first display unit based on the first detection result, In a state where the first housing and the second housing are folded, the second detection result is obtained by detecting the illuminance on the second display unit side by the second detection element, and the second detection result is obtained.
- the brightness of the second display section is adjusted and displayed according to the detection result.
- the first display portion is set to a display state, and the third detection result is obtained by detecting the luminance with the first detection element.
- the brightness of the first display unit may be controlled and displayed according to the third detection result and the first detection result.
- the optical sensor may include a first detection element and a second detection element.
- the third detection element detects the luminance of the first display unit.
- the first detection element detects the illuminance on the first display unit side in the state where the first housing and the second housing are open, and the second detection is performed.
- the first detection result and the second detection result are used to control and display the brightness of the first display unit, and the first housing and the second housing are folded.
- the third detection result is obtained by detecting the illuminance on the second display unit side by the second detection element, and the luminance of the second display unit is adjusted and displayed based on the third detection result.
- an optical sensor capable of detecting light in multiple directions can be manufactured.
- the second display section by changing the brightness of the surroundings without performing a complicated operation on the operation section, and it is possible to display the second display section without performing a complicated and troublesome process. , Time, or the presence or absence of reception can be confirmed.
- the first display unit and the second display unit it is possible to control the brightness according to the ambient brightness, so that it is possible to suppress the power for displaying the display unit. At the same time, visibility can be improved.
- the luminance of the first display section is detected by the third detection element, and based on the detection result. Since the brightness of the first display unit can be controlled in a short time, a display with high visibility can be obtained regardless of the degree of deterioration of the display unit.
- FIG. 1 is a diagram showing Embodiment 1 of the present invention.
- FIG. 2 is a diagram showing a second embodiment of the present invention.
- FIG. 3 is a diagram showing Embodiment 1 of the present invention.
- FIG. 4 is a diagram showing Embodiment 2 of the present invention.
- FIGS. 5A and 5B are diagrams showing Embodiment 1 of the present invention.
- FIGS. 6A and 6B are diagrams showing Embodiment 3 of the present invention.
- FIG. 7 is a diagram showing Embodiment 1 of the present invention.
- FIG. 8 is a diagram showing Embodiment 2 of the present invention.
- FIG. 9 is a diagram showing Embodiment 1 of the present invention.
- FIG. 10 is a diagram showing a second embodiment of the present invention.
- FIG. 11 is a diagram showing Embodiment 2 of the present invention.
- FIGS. 12 (A) and 12 (B) are diagrams showing Embodiment 2 of the present invention.
- FIG. 13 is a diagram showing a fourth embodiment of the present invention.
- FIG. 14 is a diagram showing Embodiment 4 of the present invention.
- FIGS. 15A and 15B are diagrams showing Embodiment 4 of the present invention.
- FIGS. 16 (A) and (B) are diagrams showing Embodiment 4 of the present invention.
- BEST MODE FOR CARRYING OUT THE INVENTION are diagrams showing Embodiment 4 of the present invention.
- a portable telephone is adopted as a typical example of a foldable portable communication device, but the present invention is not limited to this.
- a portable telephone a foldable electronic organizer and a foldable mobile computer are used. Etc. can be adapted.
- FIG. 5 is a schematic view of a mobile phone according to the present invention
- FIG. 5 (A) is a perspective view of a state in which a housing is opened
- FIG. 5 (B) is a perspective view of a similar one in a closed state
- FIG. 13 is a perspective view of the first housing 800a provided with the second display unit 802 when viewed from the side thereof.
- the mobile phone is connected by two housings 800a, 800b, hinge 509, and can be opened and closed about the hinge 509.
- the first housing 800a has a first display ⁇ 801, a second display ⁇
- the second housing 800b has an operation button 803, an operation button 804 provided on the side surface of the mobile phone, a microphone 805, an open / close detection switch 812, a headphone terminal cover 813, and the like.
- the first display unit 801 is configured by a liquid crystal display device or a light der Ru EL (El eC tro Luminescence) display device of a color or monochrome, the character information relating to the reception of radio waves Information (typically, whether or not radio waves or e-mails are received), character information and image information obtained by receiving radio waves (typically, contents of received e-mails, contents of WEB reception, etc.), Displays detailed information such as time, image information captured by the built-in camera, and other information (typically, name, telephone number, address, etc.) stored in the storage medium. Note that when the housing of the mobile phone is closed, that is, when the first display portion 801 and the operation button 803 are folded so as to face each other, the first display portion does not display an image, It turns off.
- radio waves Information typically, whether or not radio waves or e-mails are received
- character information and image information obtained by receiving radio waves typically, contents of received e-mails, contents of WEB reception, etc.
- the second display unit 802 is composed of a color or single-color liquid crystal display device or an EL (Electro Luminescence) display device that is a light-emitting display device, and includes character information on radio wave reception, time, and information stored in a storage medium. Is displayed. When the housing of the mobile phone is open, the second display unit does not display an image and is in an OFF state.
- EL Electro Luminescence
- the operation button 803 includes a numeric keypad, a power key, a connection key, a mail key, a web key, a selection key, and the like. Numeric keys are used to enter numbers and characters, and to enter such information.
- the power key is used to turn on / off the power of the mobile phone and to end the current call.
- the connection key is a key for connecting a radio wave being received or transmitting a radio wave.
- a mail key and a WEB key are keys for receiving or transmitting information.
- the selection key is a key for selecting information or a function stored in the storage medium.
- the operation button 804 provided on the side of the mobile phone is a key for selecting the lighting of the second display unit 802, the connection of the radio wave being received, the voice recording, etc. when the foldable mobile phone is closed. It is.
- Microphone 805 has a function of transmitting voice during a call.
- Speakers 806a and 806b are used for receiving sound, voice of the other party during a call, alarm, music, etc. It has the function of emitting
- the speaker 806a mainly emits the voice of the other party during a call
- the speaker 806b mainly emits a reception sound, an alarm, music, and the like.
- the antenna 807 is for transmitting or receiving radio waves necessary for communication.
- the camera lens 808 is a lens for photographing a subject with a digital still camera built into a mobile phone.
- the first lighting port 810 is an opening for guiding ambient light to a detection element that measures illuminance on the first display portion 801 side.
- the mobile phone is covered with a cover material (not shown) to prevent moisture and dust from entering the inside of the mobile phone.
- the second lighting port 81 1 is an opening for guiding ambient light to a detection element for measuring illuminance on the second display portion 802 side, and like the first lighting port, a cover material (not shown). )).
- the open / close detection switch 812 is a switch that mechanically detects whether the housing of the foldable mobile phone is open or closed.
- a device that detects mechanically is used.
- the present invention is not limited to this, and an angle sensor that detects an angle between the first housing 800a and the second housing 800b, the first housing 800, or An optical sensor for detecting the illuminance of the second housing 800b may be used.
- the headphone terminal cover 81 3 protects the connection terminal port of the headphones.
- the lamp 814 is used to blink the lamp when receiving a radio wave or to light up during charging to notify the user of each situation. Mainly, light emitting diodes (LEDs) are used.
- FIG. 3 shows a cross section taken along (a)-(a ′) in FIG. 5 (B).
- the same parts as those in FIG. 5 are denoted by the same reference numerals, and detailed description is omitted.
- a first display panel P 801 and a second display unit 802 are fixed to a wiring board 301 by adhesives 304 and 305.
- the first display portion 801 is formed of a substrate 801a and a light emitting region 801b provided on the substrate 801a.
- the second display portion 802 includes a substrate 802a and a light emitting region 802b provided on the substrate 802a.
- First light 318a is emitted from the first display portion 801 and second light 318b is emitted from the second display portion 802.
- the second display portion 802 is provided on the opposite side of the first display portion 801 via the wiring board 301.
- An optical sensor 306 is mounted on the wiring board 301 using a conductive material 307 such as gold, silver, or solder.
- the optical sensor 306 is formed by a substrate 306a and a light receiving region 306b provided on the substrate 306a.
- the optical sensor 306 is provided between the first lighting port 810, the second lighting port 811, and the through-hole 309 provided in the wiring board 301.
- the light 310 on the first display portion 801 side is received from the first lighting opening 810, and a part of the light receiving area 303b of the optical sensor 306 measures the illuminance on the first display portion 801 side.
- light 311 is received from the second lighting port 811 and the through-hole 309, and a part of the light receiving area 306b of the optical sensor 306 measures the illuminance of the second display portion 802 or its periphery.
- the optical sensors are provided around each display unit. For this reason, the illuminance around the display portion and the area around the optical sensor are substantially the same, so that the optical sensor 306 can detect the illuminance on each display portion side.
- the first lighting port 810 and the second lighting port 811 are provided with a translucent cover material 312 in the first housing 800a so that water and dust do not enter.
- FIG. 1 is an enlarged view of the optical sensor 306 of FIG. (Corresponding to 306a in FIG. 3.)
- the first detection element (509a in Fig. 7) is composed of the wiring 106 connected to 105.
- the first transparent electrode (polarity: positive) 102, the wiring 103 connected to the first transparent electrode 102, the second semiconductor film 107, the second transparent electrode (polarity: negative) 1 08 and a wiring 109 connected to the second transparent electrode 108 constitute a second detection element (509b in FIG. 7).
- the wirings 103, 106, and 109 connected to the electrodes of the first detection element and the second detection element are insulated by a translucent organic resin 110.
- the first detection element and the second detection element form the light receiving region 306b in FIG.
- Plastic substrates include PET (polyethylene terephthalate), PEN (polyethylene naphthalate), PES (polyether sulfide), polypropylene, polypropylene sulfide, polyetherimide, polyetherimide, and polyolefins: E-diene sulfide, polyphenylene.
- a substrate made of lenoxide, polysulfone, or polyphthalamide can be used.
- the first semiconductor film 104 and the second semiconductor film 107 are formed using an amorphous silicon film, a silicon film having a PIN junction, or a microcrystalline silicon film. In addition, it has PIN type junction
- the silicon film is composed of a p-type semiconductor layer, an n-type silicon layer, and an i-type (intrinsic) silicon layer sandwiched between the p-type silicon layer and the n-type silicon layer.
- the metal electrode 105 is formed of a conductive film containing elements such as gold, copper, nickel, platinum, and silver.
- the first transparent electrode 102 is a common electrode of the first detection element and the second detection element.
- the first detection element detects the brightness (illuminance) of the light 310 applied to the first display unit.
- the second detection element detects the brightness (illuminance) of the light 311 applied to the second display unit.
- the metal electrode 105 since the metal electrode 105 has a light shielding function, only the light (illuminance) applied to one display unit is detected.
- the portable communication device of the present invention includes an antenna 807, a transmission / reception unit 502, a modulation / demodulation unit 503, a microphone 805, speakers 806a and 806b, a voice processing unit 504, a control unit 505 having a CPU 511 and a memory 512, a first display.
- the operation unit corresponds to the operation buttons 803 and 804 in FIG.
- a radio wave received by transmitting / receiving section 502 via antenna 807 is demodulated by modem section 503 into audio information.
- the audio information is supplied to the audio processing unit 504, the audio processing unit 504 performs predetermined processing, and the speakers 806a and 806b convert the audio information into audio and output the audio.
- the information received by the transmission / reception unit 502 and demodulated by the modulation / demodulation unit 503 is converted into character information (reception data) or the like by the control unit 505, and the first and second drive circuits 507 and 508 use the first display unit 801 or the It is displayed on the display unit 802 of 2. Further, this information is stored in the memory 512 of the control circuit.
- the voice of the user is captured by the microphone 805, and after predetermined processing is performed by the voice processing unit 504, the voice information is supplied to the modem unit 503.
- the modulation / demodulation unit 503 modulates the supplied audio information (transmission data) into a radio signal, and transmits the signal from the antenna 807 via the transmission / reception unit 502.
- input information from the operation unit 510 is stored in the memory 512 as needed via the control unit 505, and is supplied to the modem unit 503 as transmission data.
- the modulation / demodulation unit 503 modulates the supplied input information (transmission data) into a radio signal, and transmits the signal from the antenna 807 via the transmission / reception unit 502.
- the control unit 505 transmits / receives a signal to / from a base station (not shown) in a predetermined procedure, performs position registration, and enters a standby state S10.
- step S100 the open / close detection switch 812 shown in FIG. 5A detects whether the mobile phone is closed.
- step S110 the control unit 505 recognizes a change in the output of the second detection element 509b, and measures surrounding environmental information, that is, the illuminance on the second display unit 802 side.
- step S111 when the illuminance on the second display portion 802 side increases, When the surrounding brightness becomes brighter, the illuminance is converted into a digital signal by an A / D converter and input to the CPU 511 of the control unit 505 in step S112. Based on the comparison data stored in the memory 512, the luminance of the second display unit 802 corresponding to the illuminance is calculated in the CPU 511 of the control unit 505.
- the memory 512 stores in advance the illuminance and the luminance of the display unit that provides a highly visible display corresponding to the illuminance.
- the stored information is compared with the illuminance, and the luminance corresponding to the illuminance is output from the control unit 505 to the D / A converter, and is converted into an analog signal by the DZA converter.
- the second drive circuit 508 causes the second display unit 802 to display the time, image, and received information while adjusting the luminance of the second display unit 802. If the illuminance does not change in step S111, the process returns to step S100.
- step S114 the second detector element 509b detects the illuminance (brightness of the surroundings) on the second display unit side, and the illuminance decreases (the surrounding brightness decreases). If the display has become darker, the lighting of the second display unit 802 is terminated in step S116. If the illuminance does not change (the surroundings must be dark), in step S115, the timer function is started, and after an elapse of an arbitrary time, the display on the second display unit 802 is terminated and the apparatus enters a standby state. .
- the change in illuminance causes the second display portion 802 to light up, so that the display contents of the second display portion 802 (time, presence / absence of transmission / reception, etc.) can be performed without complicated steps such as pressing operation keys or opening the housing. Etc.) can be recognized.
- step S121 the CPU 511 of the control unit 505 calculates the luminance of the first display unit 801 with high visibility based on the input digital signal and the comparison data stored in the memory 512.
- the luminance value is converted into an analog signal by the D / A converter and supplied to the first drive circuit 507.
- step S122 the input information from the operation unit 510, the information stored in the memory 512, the time, the image, and the reception information are displayed on the first display unit 801.
- step S123 the open / close detection switch detects whether or not the case of the mobile phone is closed. If it is detected that the case is closed, the process enters the standby state of step S140. If it is determined in step S123 that the door is not closed, the process returns to step S120.
- the display on the second display unit 802 can be controlled by the surrounding brightness, that is, the change in the illuminance on the second display unit 802 side without operating the operation unit.
- the second display unit 802 can check the time, the presence or absence of reception, and the like without going through the process.
- the first detection element 509a and the second detection element 509b are provided in one optical sensor 306, it is possible to reduce the number of optical sensors mounted on the portable communication device, A small portable communication device can be manufactured at low cost.
- the installation location of the optical sensor 306 is changed to a first housing having a first display portion 801 and a second display portion 802. Provided on body 800a, but not limited to.
- the optical sensor 306 may be provided in the second housing 800b having an operation button.
- the optical sensor can be provided inside a keyboard covered with a translucent cover, or inside a mesh-shaped housing provided with fine holes and capable of transmitting light.
- an optical sensor having a structure different from that of the first embodiment, a portable communication device having the same, and a display method thereof will be described.
- a mobile phone is used as a representative example of a mobile communication device, and the same portions as those in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.
- FIG. 4 shows a cross section of FIG. 5 (B) (a) — (a ′) in the present embodiment.
- a first display portion 801 and a second display portion 802 are fixed to a wiring board 301 by adhesives 304 and 305.
- the first display portion 801 is formed of a substrate 801a and a light-emitting region 801b provided on the substrate 801a.
- the second display portion 802 is formed by a substrate 802a and a light emitting region 802b provided on the substrate 802a.
- the first display portion 801 emits first light 318a
- the second display portion 802 emits second light 318b.
- the second display unit 802 is provided on the opposite side of the first display unit 801 via the wiring board 301.
- a through hole 309 is formed between the first lighting port 810 and the second lighting port 811, and a through hole 309 is formed between the first lighting port 810 and the through hole 309.
- An optical sensor 306 formed by a substrate 306a and a light receiving region 306b provided thereon is provided.
- the first lighting port 810 and the second lighting port 811 are provided with a light-transmitting cover material 312 as in the first embodiment. Further, the space between the display of each display portion and the first housing 800a is sealed with sealing materials 313 and 314.
- the optical sensor 306 is connected to the first display portion 801 by a light-transmitting adhesive 316 such as optical grease, and the light emitted from the first display portion 801 is emitted. 7 penetrates the light-transmitting adhesive 316 and enters the substrate 306a of the optical sensor.
- a light-transmitting adhesive 316 such as optical grease
- FIG. 2 is an enlarged view of the optical sensor 306 of FIG.
- a substrate 201 having a light-transmitting property (corresponding to 306a in FIG. 4.), I TO (indium oxide-tin oxide alloy), indium oxide-zinc oxide alloy (In 2 0 3) -Zn 0 ), zinc oxide (ZnO)
- I TO indium oxide-tin oxide alloy
- I TO indium oxide-zinc oxide alloy
- In 2 0 3) -Zn 0 zinc oxide
- ZnO zinc oxide
- the wiring 206 connected to the electrode 205 constitutes a first detection element that detects light 310 applied to the first display portion.
- the wiring 209 connected to the electrode 208 forms a second detection element for detecting the light 311 applied to the second display portion.
- the first transparent electrode 202, the wiring 203 connected to the first transparent electrode, the first semiconductor film 204, the second metal electrode 210, and the wiring 211 connected to the second metal electrode form A third detection element that detects light 317 emitted from the first display unit 801 is configured.
- the first detection element, the second detection element, and the third detection element constitute a light receiving region 306b.
- the first semiconductor film 204 and the second semiconductor film 207 are formed using an amorphous silicon film, a silicon film having a PIN junction, or a microcrystalline silicon film.
- the silicon film having a PIN-type junction is composed of a P-type semiconductor layer, an n-type silicon layer, and an i-type (intrinsic) silicon layer sandwiched between a p-type silicon layer and an n-type silicon layer. I have.
- the first transparent electrode 202 is a common electrode of the first detection element, the second detection element, and the third detection element.
- the first detection element detects the brightness (illuminance) of the light 310 applied to the first display unit.
- the second detection element detects the brightness (illuminance) of the light 311 applied to the second display unit.
- the third detection element detects the luminance of the light 317 emitted by the first display unit. Since the first metal electrode 205 is provided between the first detection element and the second detection element, light does not leak between the detection elements.
- the first display portion 801 and the optical sensor 306 are connected by a translucent adhesive 316 or the like. Therefore, light 317 emitted from the first display portion enters the optical sensor 303 via the substrate 801a or the light-emitting region 801b of the first display portion and the adhesive 316. The luminance of the first display portion 801 can be detected by the third detection element.
- light 317 emitted from the first display portion is transmitted to the substrate 801a or the light-emitting region 801.
- the light is transmitted through the substrate 306a of the optical sensor via the adhesive 316 having a light-transmitting property, and the luminance is detected by the third detection element.
- a portion of the substrate 220 where the first detection element and the second detection element are formed may be shaved. As a result, it is possible to prevent erroneous recognition due to the incidence of light that interferes with the light 317 emitted from the first display unit on these detection elements.
- the other components in FIG. 11 are the same as those in FIG. 2, and are denoted by the same reference numerals.
- the mobile phone of the present invention includes an antenna 807, a transmitting / receiving unit 502, a modem 503, a microphone 805, a speaker 806a, 806b, a voice processing unit P504, a control unit 505 including a memory 512 and a CPU 511,
- the display device includes a first display portion 801, a second display portion 802, a first drive circuit 507, a second drive circuit 508, an optical sensor 306, and an operation portion 510.
- the optical sensor 306 includes a first detection element 509a, a second detection element 509b, and a third detection element 509c.
- the third detection element 509c measures the light 317 emitted from the first display unit and detects a change in luminance due to deterioration of the EL light emitting element of the display unit and the backlight of the liquid crystal panel. .
- transmission / reception of radio waves using the antenna 807 and the transmission / reception unit 502, audio conversion and input / output thereof in the modulation / demodulation unit 503, and storage of information related to transmission / reception of radio waves in the memory 512 Is the same as in the first embodiment.
- FIGS. 12A and 12B show a memory 512 in which luminance data is stored, a detection element, a control unit 505, a first display unit 801 to which image data is input,
- FIG. 9 shows a block diagram including an AZD conversion unit 601.
- the detection element used here is the third detection element 509c in FIG.
- the third detection element 509c and the AZD conversion unit 601 are off, and the image data 602 is input from the control unit 505 to the first display unit 801 to display information.
- data for performing a certain display is input from the control unit 505 to the first display unit 801.
- a certain display means displaying a single color such as white or each RGB on the entire screen.
- a signal for turning on the third detection element 509c and the AZD conversion unit 601 is input from the control unit 505, and these are turned on.
- the luminance of the first display portion 801 is measured by the third detection element 509c.
- the measured luminance data is input to the memory 512 in the control unit 505 via the AZD conversion unit 601 according to the amount of change in luminance.
- the control unit 505 By using the measured luminance data to determine the amount of change from the previous luminance data stored in the memory 512, the state of deterioration of the EL light emitting element and the backlight can be determined. For this reason, a correction value (current value, voltage value) for correcting the luminance lowered due to the deterioration is calculated by the control unit 505, and the luminance correction value is stored in the memory 512.
- the third detection element 509c and the AZD conversion unit 601 are turned off, The input of the constant image data 612 from the control unit to the first display unit is also turned off.
- the display can be displayed with high visibility by adjusting the luminance of the display unit with the above-described luminance correction value.
- first display portion 801 and second display portion 802 of the present embodiment will be described with reference to FIG.
- the second display unit 802 operates in the same manner as the first embodiment shown in FIG. 9 from the standby state S10 to the steps S100 to S116. Further, the same method of Step S120 to Step S122 of the first display unit 801 has the same operation method as that of Embodiment 1 shown in FIG.
- step S123 it is determined whether or not the mobile phone is closed by the open / close detection switch 812 in FIG.
- step S130 a certain image is displayed on the first display portion 801 by the operation of measuring the luminance as shown in FIG. 12 (B).
- the luminance of the first display portion 801 when data is input and a certain display is performed is detected by the third detection element 509c, and luminance data is obtained.
- the luminance data is converted into a digital signal by the A / D converter, and is input to the CPU 511 of the control unit 505.
- step S131 a brightness correction value for correcting the brightness of the first display unit 801 is calculated based on the previously input comparison data and the measured brightness data. After being converted into an analog signal, the luminance correction value is stored in the memory 5 12 of the control unit.
- step S132 the fixed display on the first display section is terminated, and The SI 40 enters the standby state.
- Step S120 to Step S122 when an image is displayed on the first display unit 801, specifically, at the time of the operation of Step S120 to Step S122, the image is obtained by the first detection element 509a in Step S121.
- the luminance of the first display unit 801 is controlled and displayed in consideration of the luminance correction value together with the illuminance data.
- step S123 If it is determined in step S123 that the case of the mobile phone is not in the closed state by the open / close detection switch 812, the process returns to step S120.
- Steps S130 to S132 may be performed each time the mobile phone is opened or closed, or may be performed at regular intervals.
- EL display devices have a problem in that light-emitting materials undergo chemical changes due to environmental stresses such as humidity and temperature, causing degradation in luminance and limiting display quality or product life. Also, in the liquid crystal display, there is a problem that the display becomes dark due to deterioration of the backlight with time.
- the brightness of the first display portion 801 can be controlled by the deterioration of the EL display device and the backlight and the brightness of the surroundings.
- a folding portable communication device with low power consumption can be manufactured.
- the first detection element 509a, the second detection element 509b, and the third detection element 509c can be provided in one optical sensor, so that the number of components to be mounted can be reduced. Is possible. As a result, the size of the foldable communication device can be reduced.
- an optical sensor in which a detection element for controlling the luminance of the first display unit and a detection element for detecting illuminance on the display unit side are connected in parallel is provided in the second housing.
- the mobile phone will be described.
- FIG. 6 is a schematic view of a foldable mobile phone according to the present invention.
- FIG. 6 (A) is a perspective view of an open state
- FIG. 6 (B) is a perspective view of a similar one in a closed state.
- FIG. 15 is a perspective view of the second housing 800b where no second display unit is provided as viewed from the side. As in the first embodiment, two housings 800a and 800b are connected by a hinge 509.
- the first housing 800a is provided with a first display portion 801, a second display portion (not shown), a speaker 806a, an antenna 807, a camera lens (not shown), a lamp 814, and the like. You.
- the second housing 800b has an operation button 803, an operation button 804 provided on the side of the mobile phone, a microphone 805, an open / close detection switch 812, a headphone terminal cover 813, and a first lighting port 820. , A second daylighting opening 821 and the like.
- the first lighting port 820 and the second lighting port 821 are formed on the front and back of the same place in the second housing.
- these light-receiving ports are provided with a light-transmitting cover such as the area 312 in FIG. 3 and the area 312 in FIG.
- a plurality of detection elements as shown in FIG. 1 are arranged between the first lighting port 820 and the second lighting port 821.
- An optical sensor connected to the column is provided.
- the structure of the mobile phone of the present embodiment has the structure shown in FIG. Details are described in the first embodiment, and a description thereof will not be repeated.
- the first detection element 509a detects the illuminance (brightness of the surroundings) on the first display unit side when the housing of the mobile phone is open. Further, when the housing of the mobile phone is closed, a fixed display is displayed on first display portion 801 and the luminance at this time is detected.
- second detection element 509b detects the illuminance (brightness of the surroundings) on the second display unit side when the mobile phone is closed.
- FIGS. 12A and 12B As an operation method for controlling the luminance of the first display portion using the first detection element, a method shown in FIGS. 12A and 12B may be used. Details are described in Embodiment 2 and will not be described. Note that, in this case, the first detection element 509a is used in the present embodiment instead of the third detection element 509c of the second embodiment.
- the method shown in FIG. 10 may be used.
- the details are described in the second embodiment, and a description thereof will not be repeated.
- the same third detection element described in step S130 of FIG. 10 as the first detection element 509a used in step S120 is used.
- the optical sensor is provided between the first lighting port 820 and the second lighting port 821, a sensor may be provided below the operation button when the pad of the operation button has translucency.
- the lighting openings 820 and 821 may be provided inside the housings 800a and 800b which are provided with fine holes as shown in FIG. 6 and which can transmit light. Note that when the housing having the optical sensor is formed of a material having a light-transmitting property, a hole such as a daylight opening or a fine hole is not required.
- a portable communication device having a display device capable of displaying images on both sides is described with reference to FIGS. 1, 5, 13, 13, 15 (A) (B), and 16 (A) ( This is explained using B).
- a mobile phone is used as a representative example of a mobile communication device, and the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.
- display is performed on both sides as shown in FIG. 13.
- Display device 831 (a light-transmitting substrate 831a and a light-emitting region 831b provided on the substrate 831a).
- the display device When the first housing 800a and the second housing 800b are open, the display device displays image information recognizable on the first display unit, and displays the first housing 800a and the second housing 800a. When the body 800b is closed, recognizable image information is displayed on the second display unit.
- the display unit facing the operation unit (803 in FIG. 5) is a first display button (801 in FIG. 5), and the opposite side of the first display unit. Is a second display unit (802 in FIG. 5).
- wiring board 301 can be arranged between first and second display portions 801 and 802 as shown in FIG. However, in the present embodiment, the wiring board 301 is arranged beside the optical sensor 306 so as not to hinder display.
- the optical sensor 306 of the present embodiment has a configuration in which two detection elements as shown in FIG. 1 are connected in parallel, as in the first embodiment.
- the first detecting element is for detecting the brightness (illuminance) of the light 310 irradiated on the first display portion side 801
- the second detecting element is for detecting the brightness (illuminance) of the second display portion side 801.
- the brightness (illuminance) of the light 31 It is issued.
- the optical sensor 306 the light-transmitting substrate 306a and the light receiving area 306b
- the brightness (illuminance) of the light 310 emitted to the first display unit side is detected.
- the display device 831 capable of displaying on both sides emits the first light 318a to the first display portion 800a side, and the first display portion can recognize the light. Display image information.
- the optical sensor 306 detects the brightness (illuminance) of the light 311 applied to the second display unit.
- the display device 831 capable of displaying images on both sides emits the second light 318 b to display image information recognizable by the second display portion 802.
- the operation button is formed of a material having an equal configuration, so that the optical sensor (306.
- the optical sensor 306 includes a light-transmitting substrate 306a and a light-receiving region provided on the substrate 306a. 306b) can be placed under the operating button (803 in FIG. 5).
- a display capable of displaying a certain image and displaying both images on both surfaces is provided. The luminance of the device 831 is detected.
- the display device 831 when displaying image information recognizable from the first display unit 801 or the second display unit 802, it is possible to display the image information on both sides based on the luminance detection result and the illuminance on each display unit side.
- the luminance of the display device 831 can be controlled.
- FIG. 15B illustrates a cross-sectional structure of a light-emitting element in a pixel portion of a functional display device 831
- FIG. 15B illustrates a device structure of the light-emitting element.
- the light-emitting element described here is formed by a first electrode electrically connected to the current control TFT and a second electrode formed with a layer containing a light-emitting substance interposed therebetween.
- a thin film transistor (TFT) is formed over a substrate 1201.
- a current controlling TFT1222 which is electrically connected to the first electrode 1221 of the light emitting element 12215 and has a function of controlling current supplied to the light emitting element 12215
- 9 shows a switching TFT1 221 for controlling a video signal applied to the gate electrode of the flow control TFT1 222.
- each TFT includes at least a channel forming region 1202, a source region 1203, and a drain region 1204.
- each TFT is covered with a gate insulating film 1205, and a gate electrode 1206 overlapping with the channel formation region 1202 via the gate insulating film 1205 is formed.
- an interlayer insulating film 1208 is provided so as to cover the gate electrode 1206.
- a wiring 1207 electrically connected to the source region 1203 of the current controlling TFT1 222 and a first electrode 1 21 1 electrically connected to the drain region 1204 are formed. Is provided. Note that when the first electrode 1 211 is an anode, it is preferable that the TFT1222 for current control is formed of a p-channel type, and that the TFT1222 for current control is formed of an ⁇ -channel type when it is a cathode.
- an insulating layer 1209 is formed to cover an end portion of the first electrode 1221, the wiring 1207, and the like.
- a layer 1223 containing a light-emitting substance is formed over the first electrode 1221, and a light-emitting element 12215 is completed by forming a second electrode 1224 thereon. Can't.
- the materials of the first electrode 1211 and the second electrode 1224 can be appropriately selected.
- a conductive material having a large work function for example, a work function of 4. OeV or more. It is preferable to use a work function of 3.5 eV or less.
- the first or second electrode 121 1 or 122 4 is formed using a light-transmitting material. There is a need to. By forming both electrode materials with a light-transmitting material, a light-emitting element capable of emitting light from both electrodes can be formed.
- holes are injected from the electrode serving as an anode to the layer 1223 containing a light-emitting substance, and the electron is transferred from the electrode serving as a cathode to the layer 1223 containing a light-emitting substance. Is injected. Then, light is obtained by recombination of holes and electrons in the layer 1223 containing a light-emitting substance.
- the layer containing a light-emitting substance 1231 which includes at least a light-emitting layer, includes any of layers having different functions with respect to carriers such as a hole-injection layer, a hole-transport layer, a blocking layer, an electron-transport layer, and an electron-injection layer. Or one or a combination of multiple Formed.
- a known organic compound of a low molecular weight, a high molecular weight, or a medium molecular weight can be used as a material for forming the layer 1223 containing a light-emitting substance.
- examples of the substitution of the molecular organic compound here include dendrimers and oligomers.
- the following materials can be used as a material for forming the layer 123 containing a light-emitting substance.
- a vorphyrin-based compound is effective as long as it is an organic compound, and phthalocyanine (hereinafter, referred to as H 2 —Pc) and copper phthalocyanine (hereinafter, Cu—Pc And so on).
- phthalocyanine hereinafter, referred to as H 2 —Pc
- Cu—Pc And so on phthalocyanine
- conductive polymer compounds are chemically doped, such as poly (ethylenedioxythiophene) (PEDOT) doped with polystyrene sulfonic acid (hereinafter, PSS), polyaniline, and polyvinyl alcohol.
- PSS polystyrene sulfonic acid
- PVK polyvinyl alcohol
- an aromatic amine-based compound that is, a compound having a benzene ring-nitrogen bond
- a derivative thereof such as 4,4′-bis [N— (1-1naphthyl) -1-N-phenylamino] -biphenyl (hereinafter, “1-N PDJ), 4, 4 ', 4 "-tris (N, N-diphenylamino) -triphenylamine (hereinafter referred to as" TD ATA "), 4, 4', 4" tris Starburst type aromatic amine compounds such as [N- (3-methylphenyl) -1-N-phenylamino] -triphenylamine (hereinafter referred to as “MTDATAJ”).
- the light emitting material forming the light emitting layer specifically, tris (8-quinolinolato) aluminum (hereinafter, referred to as Alq 3 ), tris (4-methyl-18-quinolinolato) aluminum (Hereinafter referred to as Almq 3 ), bis (10-hydroxybenzo [h] -quinolinato) beryllium (hereinafter referred to as BeBq 2 ), bis (2-methyl-8-quinolinolato) -1 (4-hydroxy-biphenylyl) -1 Aluminum (hereinafter referred to as BAIq), bis [2- (2-hydroxyphenyl) -1-benzoxazolat] zinc (hereinafter referred to as Zn (BOX) 2 ), bis [2- (2-hydroxyphenyl) -benzothiazola [7]
- Zn (BTZ) 2 various fluorescent dyes are effective.
- a triplet light-emitting material is also possible, and a complex mainly containing platinum or iridium as a central metal is used.
- a triplet light-emitting material tris (2-phenylpyridine) iridium (hereinafter, referred to as Ir (ppy) 3 ), 2,3,7,8,12,13,17,18-octaethyl 21H, 23H-porphyrin-platinum (hereinafter referred to as PtOEP) and the like are known.
- a metal complex As the electron transporting material forming the electron transporting layer, a metal complex is often used, and a metal complex having a quinoline skeleton or a benzoquinoline skeleton such as Alq 3 , Almq 3 , BeBq 2 described above, or a mixed coordination BAIq and the like are preferred.
- metal complexes having an oxazole-based or thiazole-based ligand such as Zn (BOX) 2 and Zn (BTZ) 2 .
- BAIq, OXD-7, TAZ, p-EtTAZ, BPhen, BCP, etc. described above are effective as hole blocking materials that form the blocking layer because of their high excitation energy levels. It is.
- both the first electrode 1221 and the second electrode 1221 are formed of a light-transmitting material, the first electrode 1221 is an anode, A configuration in the case where the second electrode 1224 is a cathode will be described.
- the first electrode 1211 is made of an indium tin oxide (ITO) film, a transparent conductive film in which 2 to 20% of zinc oxide (ZnO) is mixed with indium oxide, IZO, and In 2 0 3 — can be formed using a transparent conductive film such as ZnO, and the second electrode 122 4 is formed by laminating Mg: Ag (an alloy of magnesium and silver), which is a material with a small work function, and ITO It can be formed by performing.
- any of the above materials can be appropriately selected and used.
- the first electrode 1221 is an anode and the second electrode 1224 is a cathode, but all are formed of ITO.
- the structure of the layer 123 containing a light-emitting substance is characteristic. That is, a layer containing a light-emitting substance formed in contact with the second electrode 1224 serving as a cathode has a doping layer 1304 doped with an alkali metal such as Li or Cs having a small work function. .
- the layer containing a light-emitting substance 123 is composed of a hole-injection layer 1305, a hole-transport layer 1306, a light-emitting layer 1307, a blocking layer 1308, and an electron-transport layer 1308.
- a stacked structure is formed by using the 309 and the driving layer 1304 has been described, the stacked structure except that a doping layer is formed on the layer 123 containing a light emitting substance in contact with the second electrode 1224 is described above. Materials can be appropriately selected and used.
- the right side of FIG. 16 (B) shows an example of a material used for each layer and an example of its film thickness.
- the display device 831 capable of displaying images on both surfaces of this embodiment mode is a full-color display
- a material layer which emits red, green, and blue light is used for the layer 1213 containing a light-emitting substance, using an evaporation mask.
- the film may be selectively formed as appropriate by a vapor deposition method, an inkjet method, or the like.
- full color display may be performed by providing a layer containing a light-emitting substance with white light emission and providing a color filter, a color conversion layer, and the like separately.
- the number of display devices can be reduced, the number of components of the sensor and the display device can be reduced, and manufacturing cost can be reduced. Can be reduced. Further, it is possible to further reduce the size of the portable communication device shown in the first to third embodiments.
- FIG. 14 a portable communication device having a display device capable of displaying images on both sides as shown in FIG. 14 will be described with reference to FIGS. 2, 5, and 14.
- FIG. 14 a mobile phone is used as a representative Portions similar to those in the second embodiment are denoted by the same reference numerals, and detailed description is omitted.
- a display device 831 (a substrate 83 having a light-transmitting property) capable of displaying on both sides is used. 1a, and a light emitting region 83 1b provided on the light emitting region 1a).
- the display unit facing the operation unit (803 in FIG. 5) is the first display unit, and the first light emitted on this side is used as the first display unit. 8a, image information recognizable by the light can be displayed.
- a display portion opposite to the first display portion is set as a second display portion, and second light 318b is emitted on this side to display recognizable image information.
- the optical sensor (306 in FIG. 14; the optical sensor 306 is formed of a light-transmitting substrate 306a and a light-receiving region 306b provided in the optical sensor 306) of the present embodiment is described in the embodiment.
- three detection elements as shown in FIG. 2 are connected in parallel.
- the first detection element detects the brightness (illuminance) of the light 310 irradiated to the first display unit
- the second detection element emits light to the second display unit.
- the third detecting element detects the brightness of the light 317 emitted by the display device 831.
- the optical sensor 306 of this embodiment is connected to a display device 831 capable of displaying on both sides with an adhesive 316 having a light-transmitting property. Therefore, light from the display device 831 which can be displayed on both sides enters the optical sensor 306 through the substrate 831a or the light emitting region 831b of the display device and the adhesive 316.
- the display device 831 capable of displaying on both sides with the third detection element can detect the luminance of the light 317 emitted.
- the luminance of the light 317 emitted from the display device 831 capable of displaying on both sides is detected by the third detection element.
- the display device 831 emits the first light 318a to the first display portion. Emit and display image information.
- the optical sensor 306 detects the brightness (illuminance) of the light 311 on the second display unit side.
- the display device 831 emits the second light 318b on the side of the second display portion, and displays recognizable image information.
- Embodiment 4 a display device capable of emitting light on both surfaces is described in Embodiment 4, and is omitted here.
- the number of components of the sensor and the display device can be reduced, and the manufacturing cost can be reduced. Further, the size can be further reduced as compared with the portable communication devices described in Embodiments 1 to 3.
Abstract
Description
Claims
Priority Applications (3)
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KR1020057018032A KR101102370B1 (ko) | 2003-03-26 | 2004-03-17 | 다방향으로부터의 빛을 검출하는 광센서, 휴대용 통신기기및 표시 방법 |
JP2005505182A JP4767013B2 (ja) | 2003-03-26 | 2004-03-17 | 光センサ |
EP04721304A EP1612526A4 (en) | 2003-03-26 | 2004-03-17 | OPTICAL SENSOR FOR DETECTING MULTIPLE DIRECTIONS, MOBILE COMMUNICATION DEVICE AND DISPLAY METHOD |
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JP2003086247 | 2003-03-26 | ||
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EP (1) | EP1612526A4 (ja) |
JP (2) | JP4767013B2 (ja) |
KR (1) | KR101102370B1 (ja) |
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WO (1) | WO2004090487A1 (ja) |
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Also Published As
Publication number | Publication date |
---|---|
US9772221B2 (en) | 2017-09-26 |
JP5137987B2 (ja) | 2013-02-06 |
EP1612526A4 (en) | 2012-11-21 |
JP2010175549A (ja) | 2010-08-12 |
JP4767013B2 (ja) | 2011-09-07 |
EP1612526A1 (en) | 2006-01-04 |
KR20050121218A (ko) | 2005-12-26 |
KR101102370B1 (ko) | 2012-01-05 |
US20050030518A1 (en) | 2005-02-10 |
CN1764829A (zh) | 2006-04-26 |
US20090309859A1 (en) | 2009-12-17 |
US7652658B2 (en) | 2010-01-26 |
CN100480649C (zh) | 2009-04-22 |
JPWO2004090487A1 (ja) | 2006-07-06 |
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