WO2011071038A1 - Dispositif d'affichage - Google Patents

Dispositif d'affichage Download PDF

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Publication number
WO2011071038A1
WO2011071038A1 PCT/JP2010/071899 JP2010071899W WO2011071038A1 WO 2011071038 A1 WO2011071038 A1 WO 2011071038A1 JP 2010071899 W JP2010071899 W JP 2010071899W WO 2011071038 A1 WO2011071038 A1 WO 2011071038A1
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WO
WIPO (PCT)
Prior art keywords
light
sensor
light receiving
openings
display
Prior art date
Application number
PCT/JP2010/071899
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English (en)
Japanese (ja)
Inventor
龍三 結城
奈留 臼倉
Original Assignee
シャープ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by シャープ株式会社 filed Critical シャープ株式会社
Priority to JP2011545212A priority Critical patent/JPWO2011071038A1/ja
Priority to US13/512,878 priority patent/US20120242636A1/en
Priority to EP10835958A priority patent/EP2498123A1/fr
Priority to CN201080055762.1A priority patent/CN102652279B/zh
Publication of WO2011071038A1 publication Critical patent/WO2011071038A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • 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
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G02F1/13318—Circuits comprising a photodetector
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • 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
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G02F1/13312—Circuits comprising photodetectors for purposes other than feedback

Definitions

  • the present invention relates to a display device having an optical sensor such as a photodiode or a phototransistor.
  • a photodetection element such as a photodiode in a pixel
  • Display devices have been proposed.
  • a photodetecting element as a light receiving unit is provided for each pixel.
  • a display device with a photosensor in which one or more photodetection elements are provided in one pixel two or more photodetections from the viewpoint of obtaining an electrical signal sufficient to recognize an object close to the display
  • a configuration in which the element is a single optical sensor unit has been proposed (see, for example, Japanese Patent Application Laid-Open Nos. 2001-320547, 2004-45875, 2008-97171, and 2008-262204). .
  • the light receiving area of one light sensor unit is increased as compared with the case where one light detection element is used as one light sensor unit. This reduces the resolution. As a result, the resolution of the image to be captured is reduced and the touch position is erroneously recognized.
  • an object of the present invention is to suppress a decrease in resolution even in an optical sensor including a plurality of light receiving units.
  • the display device of the present invention is a display device with a photosensor in which a plurality of photosensor units are provided in a display area for displaying an image, and each photosensor unit receives light from the display surface of the image.
  • the plurality of sensor openings and the plurality of light receiving parts are arranged side by side in at least one direction, and of the plurality of sensor openings, the sensor opening located outside the display region is
  • the light receiving portion provided below the sensor opening is provided at a position shifted to the inside of the display area.
  • the display device of the present invention it is possible to suppress a decrease in resolution even in an optical sensor including a plurality of light receiving portions.
  • FIG. 1 is a block diagram illustrating a schematic configuration of a TFT substrate included in the liquid crystal display device according to the first embodiment.
  • FIG. 2 is an equivalent circuit diagram showing the arrangement of pixels and photosensor portions in the pixel region of the TFT substrate.
  • FIG. 3 is a diagram illustrating an example of a timing chart when driving the liquid crystal display device.
  • FIG. 4A is a top view of a region corresponding to one photosensor unit in the pixel region 1 of the liquid crystal display device according to the first embodiment.
  • 4B is a cross-sectional view taken along line X2-X′2 of FIG. 4A.
  • 4C is a cross-sectional view taken along line Y2-Y′2 of FIG. 4A.
  • FIG. 5A is a diagram for explaining a light receiving region of one optical sensor unit and a light receiving region of one light receiving unit in the optical sensor unit.
  • FIG. 5B is a diagram for explaining a light receiving region of one light sensor unit and a light receiving region of one light receiving unit in the light sensor unit.
  • FIG. 6 is a cross-sectional view illustrating a configuration example of the sensor opening and the light receiving unit in the first embodiment.
  • FIG. 7 is a cross-sectional view illustrating a configuration example when the outer sensor opening is not shifted inward.
  • FIG. 8 is a cross-sectional view illustrating another configuration example of the sensor opening and the light receiving unit according to the first embodiment.
  • FIG. 9 is a cross-sectional view illustrating the configuration of the light receiving unit and the sensor opening of the photosensor built-in liquid crystal display device according to the second embodiment.
  • FIG. 10 is a cross-sectional view illustrating a configuration example when the outer sensor opening is not shifted inward. It is sectional drawing which shows the structure of the light-receiving part and sensor opening part of the optical sensor built-in type liquid crystal display device concerning 3rd Embodiment.
  • FIG. 12 is a cross-sectional view showing a configuration example when the outer end of the outer sensor opening is not shifted to the inner side of the outer end of the photodiode.
  • a display device is a display device with an optical sensor in which a plurality of optical sensor units are provided in a display region for displaying an image, and each optical sensor unit is configured to display the image from the display surface.
  • a plurality of sensor openings that allow the light to be incident, and a plurality of light receivers that are provided below each of the plurality of sensor openings and that receive the light incident from the sensor openings and convert it into an electrical signal
  • the plurality of sensor openings and the plurality of light receiving parts are arranged side by side in at least one direction, and the plurality of sensor openings are located outside the display region.
  • the sensor opening is provided at a position shifted to the inside of the display area with respect to the light receiving portion provided below the sensor opening (first configuration).
  • the sensor opening located outside the display area is in relation to the light receiving section provided below the sensor opening. It is provided at a position shifted to the inside of the display area.
  • the range of incident light from the display surface, which is received by the outer light receiving unit is also shifted inward. Therefore, the overlapping region between the range of incident light received by the outer light receiving unit and the range of incident light received by the light receiving unit near the center becomes large. That is, the difference between the range of light captured by one optical sensor unit and the range of light detected by any one light receiving unit in one optical sensor unit is reduced. As a result, unnecessary light can be prevented from entering, and consequently, the resolution can be improved.
  • the light receiving unit is arranged in at least one direction at a pitch corresponding to the pitch of the plurality of picture elements provided in the display area, and the plurality of sensor openings.
  • the parts are arranged side by side with a pitch smaller than the pitch of the plurality of light receiving parts.
  • the sensor openings are arranged in at least one direction at a pitch corresponding to the pitch of a plurality of picture elements provided in the display area, and the light receiving unit is In this configuration, the sensor openings are arranged side by side with a pitch larger than the pitch of the plurality of sensor openings.
  • a display device is a display device with an optical sensor in which a plurality of optical sensor units are provided in a display region for displaying an image, and each optical sensor unit is configured to display the image from the display surface.
  • a sensor opening that allows the light to enter, and a plurality of light receiving parts that are provided below the sensor opening and receive light incident from the sensor opening and convert the light into an electrical signal,
  • the plurality of light receiving portions are arranged side by side in at least one direction, and an end portion of the sensor opening in the direction in which the plurality of light receiving portions are arranged is the most in the one direction among the plurality of light receiving portions.
  • the light receiving unit located outside is located at a position shifted to the inside of the display region with respect to the outer end of the display region (fourth configuration).
  • the end of the sensor opening in the direction in which the plurality of light receiving units are arranged is the end of the outer side of the display region in the light receiving unit located on the outermost side in one direction among the plurality of light receiving units. Is shifted to the inside of the display area. As a result, the range of incident light from the display surface, which is received by the outer light receiving unit, is also shifted inward. Therefore, the difference between the range of light captured by one optical sensor unit and the range of light detected by any one light receiving unit in one optical sensor unit is reduced. As a result, unnecessary light can be prevented from entering, and consequently, the resolution can be improved.
  • a fifth configuration according to any one of the first to fourth configurations further includes a metal layer provided between the display surface and the light receiving unit, and the sensor opening includes the sensor opening. It is the structure formed in the metal layer. In such a configuration, the sensor opening can be arranged at a position closer to the light receiving unit. As a result, it is possible to suppress noise light from entering the light receiving unit.
  • a sixth configuration is any one of the first to fifth configurations, and is provided between the light source provided on the side opposite to the display surface, the light receiving unit, and the light source, and the light of the light source Is further provided with a shielding part that shields the light from directly reaching the light receiving part.
  • a display light source that emits light for image display and a sensor band that is different from a light band emitted from the display light source
  • a light source for the sensor that emits the light and a filter that passes the light in the sensor band on an optical path from the sensor opening to the light receiving unit.
  • the first substrate provided with a pixel circuit, a liquid crystal layer, and the first substrate are opposed to each other with the liquid crystal layer interposed therebetween. And a second substrate, wherein the light receiving unit is provided on the first substrate.
  • a display device is a display device with an optical sensor in which a plurality of optical sensor units are provided in a display region for displaying an image, and each optical sensor unit is configured to display the image from the display surface.
  • a plurality of sensor openings that allow the light to enter, and a plurality of sensor openings that are respectively provided below the plurality of sensor openings, and that receive the light incident from the sensor openings and convert the light into electrical signals
  • a plurality of light receiving portions, and the plurality of light receiving portions included in one light sensor portion receive the incident light in the same range of the display surface and the plurality of sensor openings and the plurality of light receiving portions. Are arranged (ninth configuration).
  • the display device according to the present invention includes a touch panel display device that detects an object close to the screen and performs an input operation by using an optical sensor unit, and a bidirectional communication device that includes a display function and an imaging function. Use as a display device or the like is assumed.
  • each drawing referred to below shows only the main members necessary for explaining the present invention in a simplified manner among the constituent members of the embodiment of the present invention for convenience of explanation. Therefore, the display device according to the present invention can include arbitrary constituent members that are not shown in the drawings referred to in this specification. Moreover, the dimension of the member in each figure does not represent the dimension of an actual structural member, the dimension ratio of each member, etc. faithfully.
  • FIG. 1 is a block diagram showing a schematic configuration of a TFT substrate 100 included in the liquid crystal display device LCD.
  • a TFT substrate 100 is formed on a glass substrate with a pixel region 1, a display gate driver 2, a display source driver 3, a sensor column driver 4, a sensor row driver 5, a buffer amplifier 6, At least an FPC connector 7 is provided.
  • a signal processing circuit 8 for processing image signals captured by a plurality of optical sensor units FS (see FIG. 2), which will be described later, provided in the pixel region 1 is provided via the FPC connector 7 and the FPC 9. And connected to the TFT substrate 100.
  • the pixel area 1 is an area where a pixel circuit including a plurality of pixels for displaying an image is formed.
  • the pixel area 1 is a display area for displaying an image.
  • a plurality of photosensor units FS for capturing an image are provided in each pixel in the pixel circuit.
  • the pixel circuit is connected to the display gate driver 2 by m gate lines G1 to Gm.
  • the pixel circuit is connected to the display source driver 3 by 3n source lines Sr1 to Srn, Sg1 to Sgn, Sb1 to Sbn.
  • the pixel circuit is connected to the sensor row driver 5 by m reset signal lines RS1 to RSm and m read signal lines RW1 to RWm.
  • the pixel circuit is connected to the sensor column driver 4 by n sensor output lines SS1 to SSn.
  • the above-described constituent members on the TFT substrate 100 can be formed monolithically on the glass substrate by a semiconductor process. Or it is good also as a structure which mounted the amplifier and drivers among said structural members on the glass substrate by COG (Chip On Glass) technique etc., for example. Alternatively, at least a part of the constituent members shown on the TFT substrate 100 in FIG. 1 may be mounted on the FPC 9.
  • the TFT substrate 100 is bonded to a counter substrate 101 (see FIGS. 4B and C), which will be described later, having a counter electrode 21 (see FIGS. 4B and C) formed on the entire surface. A liquid crystal material is sealed in a gap between the TFT substrate 100 and the counter substrate.
  • a backlight 10 is provided on the back surface of the TFT substrate 100.
  • the backlight 10 includes a white LED (Light Emitting Diode) 11 that emits white light (visible light) and an infrared LED 12 that emits infrared light (infrared light).
  • the infrared LED 12 is used as a light emitter that emits light in the signal light band (sensor band) of the optical sensor unit FS.
  • the white LED 11 is used as a light emitter that emits light for display.
  • the light emitter of the backlight 10 is not limited to the above example. For example, a combination of a red LED, a green LED, and a blue LED can be used as a visible light emitter.
  • a cold cathode tube (CCFL: Cold Cathode Fluorescent Lamp) can be used instead of the LED.
  • the signal light band of the optical sensor unit FS may be a visible light band, and the backlight 10 may include only a white LED.
  • FIG. 2 is an equivalent circuit diagram showing the arrangement of the pixels and the optical sensor unit FS in the pixel region 1 of the TFT substrate 100.
  • one pixel is formed by three color picture elements (sub-pixels) of R (red), G (green), and B (blue).
  • One photosensor unit FS is provided in one pixel composed of these three picture elements.
  • the pixel is a unit of display resolution.
  • the pixel region 1 includes pixels arranged in a matrix of m rows ⁇ n columns and photosensor portions FS similarly arranged in a matrix of m rows ⁇ n columns. As described above, the number of picture elements is m ⁇ 3n.
  • the pixel region 1 has gate lines G and source lines Sr, Sg, and Sb arranged in a grid pattern as wiring for pixels.
  • the gate line G is connected to the display gate driver 2.
  • the source lines Sr, Sg, Sb are connected to the display source driver 3.
  • m rows of gate lines G are provided in the pixel region 1.
  • three source lines Sr, Sg, and Sb are provided for each pixel in order to supply image data to three picture elements in one pixel.
  • a thin film transistor (TFT) M1 is provided as a switching element for the pixel at the intersection of the gate line G and the source lines Sr, Sg, Sb.
  • the thin film transistor M1 provided in each of the red, green, and blue picture elements is denoted as M1r, M1g, and M1b.
  • the gate electrode of the thin film transistor M1 is connected to the gate line G.
  • the source electrode of the thin film transistor M1 is connected to the source line S.
  • the drain electrode of the thin film transistor M1 is connected to a pixel electrode (not shown).
  • a liquid crystal capacitance CLC is formed between the drain electrode of the thin film transistor M1 and the counter electrode (VCOM).
  • an auxiliary capacitor C LS is formed between the drain electrode and the TFTCOM.
  • a red color filter is provided in a picture element driven by the thin film transistor M1r connected to the intersection of one gate line Gi and one source line Srj so as to correspond to this picture element. ing.
  • the picture element driven by the thin film transistor M1r functions as a red picture element by being supplied with red image data from the display source driver 3 via the source line Srj.
  • a green color filter is provided to correspond to the picture element driven by the thin film transistor M1g connected to the intersection of the gate line Gi and the source line Sgj.
  • the picture element driven by the thin film transistor M1g functions as a green picture element when green image data is supplied from the display source driver 3 through the source line Sgj.
  • a blue color filter is provided in the picture element driven by the thin film transistor M1b connected to the intersection of the gate line Gi and the source line Sbj so as to correspond to this picture element.
  • the picture element driven by the thin film transistor M1b functions as a blue picture element when blue image data is supplied from the display source driver 3 via the source line Sbj.
  • the photosensor unit FS is provided at a rate of one pixel (three picture elements). That is, one pixel is a single light sensor unit.
  • the optical sensor unit FS includes a plurality of light receiving units provided for each picture element. The light receiving portion detects light incident through the sensor opening provided for each light receiving portion, and converts it into an electrical signal.
  • the arrangement ratio of the pixel and the optical sensor unit is not limited to this example, and is arbitrary.
  • one photosensor unit may be arranged for one picture element, or one photosensor unit may be arranged for a plurality of pixels.
  • the optical sensor unit FS includes photodiodes D1, D2, and D3 that are examples of a light receiving unit, a capacitor C1, and a transistor M2 that is an example of a switching element.
  • the optical sensor unit FS includes sensor openings 18a, 18b, and 18c (see FIG. 4B).
  • the photodiodes D1, D2, and D3 are provided at positions corresponding to the red picture element, the green picture element, and the blue picture element, respectively. Sensor openings 18a, 18b, and 18c (see FIG. 4B) are provided above the photodiodes D1, D2, and D3, respectively.
  • the photodiodes D1, D2, and D3 receive light incident from the respective sensor openings 18a, 18b, and 18c.
  • the photodiodes D1, D2, and D3 are connected in parallel.
  • a reset signal line RS for supplying a reset signal is connected to the anodes of the photodiodes D1, D2, and D3.
  • the gate of the transistor M2 is connected to the cathodes of the photodiodes D1, D2, and D3.
  • a node on the wiring connecting the photodiodes D1, D2, and D3 and the gate of the transistor M2 is referred to as an accumulation node INT.
  • One electrode of the capacitor C1 is further connected to the storage node INT.
  • the other electrode of the capacitor C1 is connected to a read signal line RW that supplies a read signal.
  • the drain of the transistor M2 is connected to the wiring VDD.
  • the source of the transistor M2 is connected to the wiring OUT.
  • the wiring VDD is a wiring that supplies the constant voltage V DD to the optical sensor unit.
  • the wiring OUT is an example of an output wiring that outputs an output signal of the optical sensor unit FS.
  • the reset signal is supplied from the reset signal line RS, and the potential V INT of the storage node INT is initialized.
  • the photodiodes D1, D2, and D3 are reverse biased.
  • a read signal is supplied from the read signal line RW to the storage node INT via the capacitor C1
  • the potential V INT of the storage node INT is pushed up.
  • the transistor M2 becomes conductive.
  • an output signal corresponding to the potential V INT of the storage node INT is output to the wiring OUT.
  • the source line Sr also serves as the wiring VDD for supplying the constant voltage V DD from the sensor column driver 4 to the optical sensor unit FS. Further, the source line Sg also serves as the sensor output wiring OUT.
  • the sensor row driver 5 sequentially selects the reset signal line RSi and the read signal line RWi shown in FIG. 2 at a predetermined time interval t row . As a result, the rows of the photosensor portions FS from which signal charges are to be read in the pixel region 1 are sequentially selected.
  • the drain of the transistor M3 is connected to the end of the wiring OUT.
  • the transistor M3 can be, for example, an insulated gate field effect transistor.
  • An output wiring SOUT is connected to the drain of the transistor M3.
  • the potential V SOUT of the drain of the transistor M3 is output to the sensor column driver 4 as an output signal from the photosensor unit FS.
  • the source of the transistor M3 is connected to the wiring VSS.
  • the gate of the transistor M3 is connected to a reference voltage power supply (not shown) via the reference voltage wiring VB.
  • FIG. 3 is a diagram showing an example of a timing chart for driving the liquid crystal display device LCD1.
  • the vertical synchronization signal VSYNC goes high every frame time.
  • One frame time is divided into a display period and a sensing period.
  • the sense signal SC is a signal indicating a display period or a sensing period.
  • the sense signal SC is at a low level during the display period and is at a high level during the sensing period.
  • display data signals are supplied from the display source driver 3 to the source lines Sr, Sg, Sb.
  • the display gate driver 2 sequentially sets the voltages of the gate lines G1 to Gm to the high level. While the voltage of the gate line Gi is at a high level, the source lines Sr1 to Srn, Sg1 to Sgn, and Sb1 to Sbn correspond to the gradation (pixel value) of each of the 3n picture elements connected to the gate line Gi. Voltage is applied.
  • a constant voltage V DD is applied to the source lines Sr1 to Srn.
  • the sensor row driver 5 sequentially selects rows of the reset signal line RSi and the read signal line RWi at a predetermined time interval t row .
  • a reset signal and a read signal are applied to the reset signal line RSi and the read signal line RWi in the selected row, respectively.
  • a voltage corresponding to the amount of light detected by the n photosensors FS connected to the read signal line RWi of the selected row is output to the source lines Sg1 to Sgn.
  • FIG. 4A is a top view of a region for one pixel in the pixel region 1 of the liquid crystal display device LCD according to the present embodiment.
  • 4B is a cross-sectional view taken along line X2-X′2 of FIG. 4A
  • FIG. 4C is a cross-sectional view taken along line Y2-Y′2 of FIG. 4A.
  • the liquid crystal display device LCD of the present embodiment includes a liquid crystal panel 103 and a backlight 10.
  • the liquid crystal panel 103 a first substrate (TFT substrate 100) provided with a pixel circuit and a second substrate (counter substrate 101) provided with color filters 23r, 23g, and 23b are opposed to each other with the liquid crystal layer 30 interposed therebetween.
  • the structure is arranged as follows. That is, the liquid crystal panel 103 has a structure in which the liquid crystal layer 30 is sandwiched between two glass substrates 14a and 14b on the TFT side and the color filter side.
  • the surface on the counter substrate 101 side is the front surface
  • the surface on the TFT substrate 100 side is the back surface.
  • the surface (front surface) on the counter substrate 101 side is an image display surface.
  • the backlight 10 is provided on the back side of the liquid crystal panel 103.
  • polarizing plates 13a and 13b are provided on the back surface and the surface of the liquid crystal panel 103, respectively.
  • a layer including the color filters 23r, 23g, and 23b, the black matrix 22 (light shielding film), and the sensor openings 18a, 18b, and 18c is formed on the surface of the glass substrate 14b on the liquid crystal layer 30 side.
  • a counter electrode 21 and an alignment film 20b are formed so as to cover this layer.
  • Sensor openings 18a, 18b and 18c are provided at positions corresponding to the color filters 23r, 23g and 23b of RGB picture elements, respectively.
  • the sensor openings 18a, 18b, and 18c are portions that allow incidence of light in a band to be detected by the optical sensor unit FS from the display surface.
  • the sensor openings 18a, 18b, and 18c are formed of a material that can transmit light in the sensor band (signal light band).
  • the sensor openings 18a, 18b, and 18c can be formed of an infrared light transmission filter that absorbs light outside the infrared region. Incidence of noise light to the photodiodes D1, D2, and D3 is suppressed by the infrared light transmission filter.
  • an infrared light transmission filter or a color filter can be formed with a negative photosensitive resist in which a pigment or carbon is dispersed in a base resin such as an acrylic resin or a polyimide resin.
  • a pixel circuit including the optical sensor unit FS is formed at a position corresponding to the color filters 23r, 23g, and 23b included in each picture element provided on the glass substrate 14b.
  • the optical sensor unit FS includes photodiodes D1, D2, and D3 provided on the glass substrate 14a.
  • Photodiodes D1, D2, and D3, which are examples of the light receiving unit of the optical sensor unit FS, are arranged in one direction at a pitch corresponding to the pitch of the color filters 23r, 23g, and 23b included in the plurality of picture elements in the display region. ing.
  • Light shielding layers 16a, 16b, and 16c are provided between the photodiodes D1, D2, and D3 and the glass substrate 14a.
  • the light shielding layers 16a, 16b, and 16c are an example of a shielding part that is provided to prevent the light emitted from the backlight 10 from directly affecting the operation of the photodiodes D1, D2, and D3.
  • data signal lines such as a thin film transistor M1, a gate line G, and a source line S that form a pixel circuit are further formed.
  • pixel electrodes 19r, 19g, and 19b connected to the thin film transistor M1 through contact holes are provided on the thin film transistor M1 through contact holes.
  • the pixel electrodes 19r, 19g, and 19b are provided at positions facing the color filters 23r, 23g, and 23b.
  • An alignment film 20a is provided on the pixel electrodes 19r, 19g, and 19b.
  • sensor openings 18a, 18b, and 18c are provided on the photodiodes D1, D2, and D3.
  • the sensor openings 18a, 18b, and 18c may be filled with, for example, another wavelength selection filter or a white color filter in addition to the infrared transmission filter described above.
  • RGB color filters may be filled in the sensor openings 18a, 18b, and 18c.
  • the infrared light transmission filter is filled in the sensor opening 18b, components other than the infrared light in the light incident on the sensor opening 18b are cut. Therefore, noise components due to external light can be cut. As a result, the S / N ratio is improved.
  • the sensor openings 18a, 18b, and 18c are arranged side by side in one direction. Out of the sensor openings 18a, 18b, and 18c arranged in one direction, the outer sensor openings 18a and 18c are shifted toward the center of the optical sensor section FS (one optical sensor unit). Specifically, the photodiode D1 and the sensor opening 18a pass through the center of the sensor opening 18a and the line (center line c1) perpendicular to the substrate 100 is located inside the center line k1 of the photodiode D1. And are arranged.
  • the photodiode D3 and the sensor opening 18c are arranged so that the center line c3 of the sensor opening 18c is located inside the center line k3 of the photodiode D3.
  • the photodiode D2 and the sensor opening 18b are arranged so that the center line k2 of the center photodiode D2 is at the same position as the center line c2 of the upper sensor opening 18b.
  • the sensor openings 18a and 18c located on the outside are provided at positions shifted inward with respect to the light receiving parts (photodiodes D1 and D3) provided on the lower side. Accordingly, the range of incident light received by the plurality of photodiodes D1, D2, and D3 included in one photosensor unit FS and the incident light received by any one photodiode of one photosensor unit FS. The range difference can be reduced. As a result, unnecessary light can be removed, leading to an improvement in resolution.
  • FIG. 5A and 5B are diagrams for explaining a light receiving region of one light sensor unit and a light receiving region of one light receiving unit included in one light sensor unit.
  • FIG. 5A is a diagram illustrating an arrangement example of the sensor openings SK1, SK2, and SK3 and the pixel openings GK1, GK2, and GK3 on the display surface when the positions of the sensor opening and the light receiving unit are not shifted. It is.
  • FIG. 5B shows the arrangement of the sensor openings SH1, SH2, SH3 and the pixel openings GK1, GK2, GK3 on the display surface when the outer sensor openings are shifted inward with respect to the light receiving section. It is a figure which shows an example.
  • a light receiving portion (for example, a photodiode) is provided at a position overlapping each of the sensor openings SK1, SK2, and SK3 in a direction perpendicular to the display surface, that is, directly below.
  • the plurality of light receiving units are included in one optical sensor unit (optical sensor unit). That is, one optical sensor unit is provided for two or more picture elements.
  • a dotted line DR1 indicates a range of incident light received by the light receiving unit below the central sensor opening SK2 through the sensor opening SK2. That is, the dotted line DR1 indicates the light receiving region of one light receiving unit.
  • a dotted line UR1 indicates a range of incident light received by a plurality of light receiving portions provided respectively below the sensor openings SK1, SK2, and SK3. That is, the dotted line UR1 indicates a light receiving region of one photosensor unit (photosensor unit) including a plurality of light receiving units. In this way, the light receiving area (UR1) of one entire optical sensor unit is wider than the light receiving area (DR1) of one light receiving unit. Since the light receiving area of one photosensor unit increases in this way, the resolution decreases.
  • the example shown in FIG. 5B is also a configuration in which one optical sensor unit (optical sensor unit) is provided for two or more picture elements.
  • the outer sensor openings SH1 and SH3 are inward of the light receiving sections J1 and J2 provided in the lower part, respectively. It is provided at the position shifted to. For this reason, the light receiving region of the entire photosensor unit indicated by the dotted line UR2 is substantially equal to the light receiving region of the single light receiving unit indicated by the dotted line DR2.
  • the outer sensor openings SH1 and SH3 are shifted in the center direction (sensor openings SH1 and SH3 located at one end or the other end in the direction in which the plurality of sensor openings SH1, SH2, and SH3 are arranged). Is shifted to the other end side or one end side), the light receiving area area of one picture element and the light receiving area area of the one optical sensor unit can be brought close to each other, and the resolution can be improved.
  • FIG. 6 is a cross-sectional view illustrating a configuration example of the sensor opening and the light receiving unit.
  • the cross-sectional view shown in FIG. 6 shows an example of the arrangement of the sensor openings 18a to 18c and the light receiving parts (photodiodes D1, D2, D3) in the X2-X′2 cross section of FIG. 4A.
  • the arrangement conditions are as follows. The following conditions are examples, and the present invention is not limited to the following conditions.
  • optical sensor unit 3 light receiving parts (photodiodes)-Light receiving part size: 15 x 15 ⁇ m ⁇ Sensor opening size: 20 ⁇ 20 ⁇ m ⁇ Receiver pitch: 35 ⁇ m ⁇ Sensor opening pitch: 26.5 ⁇ m ⁇ Distance between light receiving part and sensor opening: 10 ⁇ m ⁇ Distance between light receiving part and panel surface: 360 ⁇ m ⁇ Distance between panel surface and measurement object: 10 ⁇ m
  • the photodiodes D1, D2, and D3 included in the optical sensor unit are arranged in a direction in which the picture elements are arranged at a pitch corresponding to the pitch of the picture elements (specifically, the color filters 23r, 23g, and 23b). Are arranged side by side in the same direction.
  • the pitches of the photodiodes D1, D2, and D3 are the same as the pitches of the picture elements (specifically, the color filters 23r, 23g, and 23b).
  • the pitch (26.5 ⁇ m) of the sensor openings 18a, 18b, and 18c is smaller than the pitch (35 ⁇ m) of the photodiodes D1, D2, and D3.
  • the photodiode D2 is located directly below the sensor opening 18b.
  • the outer sensor openings 18a and 18c are arranged at positions shifted inward with respect to the photodiodes D1 and D3.
  • the light-shielding portion (black matrix 22) outside the outer sensor openings 18a and 18c is outside so that light from other than the sensor openings 18a, 18b, and 18c does not enter the photodiodes D1, D2, and D3. It is preferable to be formed to extend. That is, it is preferable that only the outer sensor openings 18a and 18c are shifted inward, and the outer end of the light shielding portion (black matrix 22) is fixed without shifting. In the example shown in FIG. 6, the width of the black matrix further outside the outer sensor openings 18a and 18c is 23.5 ⁇ m.
  • a dotted line P1 shown in FIG. 6 indicates a range of light taken in by each of the photodiodes D1, D2, and D3.
  • An ellipse Q1 indicates a range of light taken in by one optical sensor unit (optical sensor unit). The range of light that one photodiode captures is substantially the same as the range of light that one optical sensor unit captures.
  • the photodiodes D1, D2 , D3 receive light having an area of about 57000 ⁇ m 2 .
  • FIG. 7 is a cross-sectional view showing a configuration example when the outer sensor openings 18a and 18c are not shifted inward.
  • the pitch of the sensor openings 18a, 18b, and 18c and the pitch of the photodiodes D1, D2, and D3 are all 35 ⁇ m and the same.
  • the photodiodes D1, D2, and D3 receive light having an area of about 63000 ⁇ m 2 .
  • a dotted line P2 shown in FIG. 7 indicates a range of light taken in by each of the photodiodes D1, D2, and D3.
  • An ellipse Q2 indicates the range of light taken by one optical sensor unit.
  • the range of light captured by one photosensor unit is wider than the range of light captured by one photodiode.
  • about 10% of unnecessary light can be removed, and the resolution can be improved.
  • FIG. 8 is a cross-sectional view illustrating another configuration example of the sensor opening and the light receiving unit.
  • the cross-sectional view shown in FIG. 8 is another example of the arrangement of the sensor openings 18a, 18b, 18c and the light receiving parts (photodiodes D1, D2, D3) in the X2-X′2 cross section of FIG. 4A.
  • the arrangement conditions are as follows. The following conditions are examples, and the present invention is not limited to the following conditions.
  • optical sensor unit 3 light receiving parts (photodiodes)-Light receiving part size: 15 x 15 ⁇ m ⁇ Sensor opening size: 20 ⁇ 20 ⁇ m ⁇ Receiver pitch: 43.5 ⁇ m ⁇ Sensor opening pitch: 35 ⁇ m ⁇ Distance between light receiving part and sensor opening: 10 ⁇ m ⁇ Distance between light receiving part and panel surface: 360 ⁇ m ⁇ Distance between panel surface and measurement object: 10 ⁇ m
  • the photodiodes D1, D2, and D3 included in the optical sensor unit are arranged in a direction in which the picture elements are arranged at a pitch corresponding to the pitch of the picture elements (specifically, the color filters 23r, 23g, and 23b). Are arranged side by side in the same direction.
  • the pitch of the sensor openings 18a, 18b, and 18c and the pitch of the picture elements are the same.
  • the pitch (43.5 ⁇ m) of the photodiodes D1, D2, D3 is larger than the pitch (35 ⁇ m) of the sensor openings 18a, 18b, 18c.
  • the photodiode D2 is located directly below the sensor opening 18b. Accordingly, the outer photodiodes D1 and D3 are arranged at positions shifted from the center to the outer side with respect to the sensor openings 18a and 18c.
  • a dotted line P3 shown in FIG. 8 indicates a range of light taken by each of the photodiodes D1, D2, and D3.
  • An ellipse Q3 indicates a range of light taken in by one optical sensor unit (optical sensor unit).
  • the range of light that one photodiode captures is substantially the same as the range of light that one optical sensor unit captures.
  • the photodiodes D1, D2 , D3 receive light having an area of about 57000 ⁇ m 2 .
  • about 10% of unnecessary light can be removed compared to the configuration shown in FIG. 7, and the resolution can be improved.
  • one light sensor unit includes three light receiving units (photodiodes) has been described, but the number of light receiving units included in one light sensor unit. May be further increased, or two light receiving portions may be provided. Increasing the number of light receiving portions per one optical sensor unit tends to increase the amount of unnecessary light that can be removed. As a result, a further resolution improvement effect can be obtained.
  • the shift is not limited to the outermost sensor opening.
  • the outer sensor openings are all shifted when viewed from the center of the optical sensor unit (the midpoint of the straight line connecting the centers of the light receiving units located at both ends in the direction in which the plurality of light receiving units are arranged). Also good.
  • FIG. 9 is a cross-sectional view illustrating a configuration of a light receiving unit and a sensor opening of a liquid crystal display device as a display device according to the second embodiment.
  • FIG. 9 is a diagram illustrating a configuration of one photosensor unit, that is, one photosensor unit.
  • the optical sensor unit includes three light receiving units (here, photodiodes D1, D2, and D3 as an example) arranged side by side in one direction, and three sensors respectively formed thereon. Opening for use. Portions other than the configuration shown in FIG. 9 can be the same as the configuration shown in FIGS. 1 to 4 of the first embodiment.
  • a metal layer 27 is provided between the black matrix 22 and the light receiving portions D1, D2, and D3.
  • the black matrix 22 has one opening 18 for one photosensor unit.
  • the metal layer 27 is provided with sensor openings 28a, 28b, and 28c.
  • the openings are controlled by the sensor openings 28a, 28b, and 28c. That is, sensor openings 28 a, 28 b, and 28 c in a range narrower than the opening 18 are formed in the metal layer 27 so as to further limit the light incident on the opening 18 of the black matrix 22.
  • the sensor openings 28a, 28b, and 28c are provided in the upper portions of the photodiodes D1, D2, and D3, respectively.
  • Sensor openings 28a, 28b, and 28c and photodiodes D1, D2, and D3 correspond to color filters 23r, 23g, and 23b (shown in FIGS. 4A and 4B) included in red, green, and blue picture elements, respectively.
  • the color filters 23r, 23g, and 23b are arranged side by side in the same direction.
  • the sensor openings 28a and 28c are provided at positions shifted inward with respect to the diodes D1 and D3 provided at the lower portions thereof.
  • the metal layer 27 for forming the sensor openings 28a, 28b, and 28c may be provided on the TFT substrate 100 side, or may be provided on the counter substrate 101.
  • the data signal line can also be used as at least a part of the metal layer forming the sensor opening.
  • the sensor openings 28a, 28b, and 28c are formed in the metal layer 27 provided between the layer of the black matrix 22 and the photodiodes D1, D2, and D3. , 28b, 28c are provided at positions closer to the photodiodes D1, D2, D3. As a result, it is possible to suppress the influence of noise light incident obliquely on the photodiodes D1, D2, and D3. Further, when the metal layer 27 in which the sensor openings 28a, 28b, and 28c are formed is provided on the TFT substrate 100 side, the alignment between the substrates 100 and 101 that occurs during the bonding process of the TFT substrate 100 and the counter substrate 101 is performed. The effect of displacement (positional displacement) is eliminated. Therefore, there is an advantage that incident light can be controlled with higher accuracy than in the case where the sensor opening is provided only on the counter substrate 101.
  • the arrangement conditions are as follows.
  • the following conditions are examples, and the present invention is not limited to the following conditions.
  • -1 optical sensor unit 3 light receiving parts (photodiodes)-Light receiving part size: 15 x 15 ⁇ m ⁇
  • Sensor opening size (metal layer) 15 ⁇ 15 ⁇ m ⁇
  • Sensor opening size (black matrix layer) 20 ⁇ 20 ⁇ m ⁇
  • Receiver pitch 35 ⁇ m ⁇
  • Sensor opening pitch 25 ⁇ m ⁇ Distance between light receiving part and sensor opening (metal layer): 5 ⁇ m ⁇ Distance between light receiving part and sensor opening (black matrix layer): 10 ⁇ m ⁇ Distance between light receiving part and panel surface: 360 ⁇ m ⁇ Distance between panel surface and measurement object: 10 ⁇ m -Black matrix layer opening pitch: 95 ⁇ m
  • the photodiodes D1, D2, and D3 included in the optical sensor unit correspond to the pitch of picture elements (specifically, color filters 23r, 23g, and 23b) (see FIGS. 4A and 4B).
  • the picture elements are arranged side by side in the same direction as the direction in which the picture elements are arranged.
  • the pitches of the photodiodes D1, D2, and D3 are the same as the pitches of the picture elements (specifically, the color filters 23r, 23g, and 23b).
  • the pitch (25 ⁇ m) of the sensor openings 28a, 28b, and 28c is smaller than the pitch (35 ⁇ m) of the photodiodes D1, D2, and D3.
  • the photodiode D2 is located directly below the sensor opening 28b. Accordingly, the outer sensor openings 28a and 28c are arranged at positions shifted inward with respect to the photodiodes D1 and D3. In the metal layer 27, portions further outside the outer sensor openings 28a and 18c are formed to extend outward to the extent that external light from other than the sensor openings 28a, 28b and 28c can be prevented. It is preferable that
  • a dotted line P4 shown in FIG. 9 indicates a range of light taken in by each of the photodiodes D1, D2, and D3.
  • An ellipse Q4 indicates the range of light taken in by one optical sensor unit (optical sensor unit). The range of light that one photodiode captures is substantially the same as the range of light that one optical sensor unit captures.
  • the photodiodes D1, D2 , D3 receive light having an area of about 57000 ⁇ m 2 .
  • FIG. 10 is a cross-sectional view showing a configuration example when the outer sensor openings 28a, 28c are not shifted inward.
  • the pitch of the sensor openings 28a, 28b, 28c and the pitch of the photodiodes D1, D2, D3 are all 35 ⁇ m and the same.
  • openings 18a, 18b, and 18c formed in the black matrix 22 are provided above the photodiodes D1, D2, and D3.
  • the pitch of these openings 18a, 18b, 18c is 35 ⁇ m.
  • the photodiodes D1, D2, and D3 receive light having an area of about 63000 ⁇ m 2 .
  • one light sensor unit includes three light receiving units (photodiodes). However, the number of light receiving units included in one light sensor unit may be further increased. Two light receiving parts may be provided.
  • the light receiving unit and the sensor opening are arranged in one direction.
  • the direction in which the light receiving unit and the sensor opening are arranged is not limited to one direction.
  • the light receiving part and the sensor opening part may be arranged side by side in two or more directions. In this case, in each direction, the outer sensor opening can be shifted inward with respect to the lower light receiving part.
  • FIG. 11 is a cross-sectional view illustrating a configuration of a light receiving unit and a sensor opening of a liquid crystal display device as a display device according to the third embodiment.
  • FIG. 11 is a diagram illustrating a configuration of one photosensor unit, that is, one photosensor unit.
  • the optical sensor unit includes three light receiving units (here, photodiodes D1, D2, and D3 as an example) arranged side by side in one direction and one sensor formed thereon. And an opening 18. Portions other than the configuration shown in FIG. 11 can be the same as the configuration shown in FIGS. 1 to 4 of the first embodiment.
  • a metal layer 27 is provided between the black matrix 22 and the light receiving portions D1, D2, and D3.
  • the black matrix 22 has one opening 18 for one photosensor unit.
  • the metal layer 27 is provided with one sensor opening 28. Thereby, the opening is controlled. That is, a sensor opening 28 in a range narrower than the opening 18 is formed in the metal layer 27 so as to further limit the light incident on the opening 18 of the black matrix 22.
  • the sensor opening 28 is provided above the photodiodes D1, D2, and D3.
  • the photodiodes D1, D2, and D3 correspond to the color filters 23r, 23g, and 23b (shown in FIGS.
  • the arrangement conditions are as follows. The following conditions are examples, and the present invention is not limited to the following conditions.
  • -1 optical sensor unit 3 light receiving parts (photodiodes)-Light receiving part size: 15 x 15 ⁇ m ⁇
  • Sensor opening size (metal layer) 65 ⁇ 15 ⁇ m ⁇
  • Sensor opening size (black matrix layer) 70 ⁇ 20 ⁇ m ⁇
  • Receiver pitch 35 ⁇ m ⁇ Distance between light receiving part and sensor opening (metal layer): 5 ⁇ m ⁇ Distance between light receiving part and sensor opening (black matrix layer): 10 ⁇ m ⁇ Distance between light receiving part and panel surface: 360 ⁇ m ⁇ Distance between panel surface and measurement object: 10 ⁇ m
  • the photodiodes D1, D2, and D3 included in the optical sensor unit correspond to the pitch of picture elements (specifically, color filters 23r, 23g, and 23b) (see FIGS. 4A and 4B).
  • the picture elements are arranged side by side in the same direction as the direction in which the picture elements are arranged.
  • the outer ends D1t and D3t of the photodiodes D1 and D3 located on the outermost side in the direction in which the photodiodes D1, D2, and D3 are arranged are outside the sensor opening 28. It is located outside the end 28t. That is, the outer end 28t of the sensor opening 28 is shifted inward with respect to the outer ends D1t and D3t of the photodiodes D1 and D3 located on the outer side.
  • the light receiving range of the outer photodiodes D1 and D3 is also shifted inward. For this reason, the overlapping region between the light receiving range of the outer photodiodes D1 and D3 and the light receiving range of the center photodiode D2 becomes large. That is, the difference between the range of light captured by one photosensor unit and the range of light detected by any one photodiode in one photosensor unit is reduced. As a result, unnecessary light can be prevented from entering, and consequently, the resolution can be improved.
  • a dotted line P6 shown in FIG. 11 indicates a range of light taken in by each of the photodiodes D1, D2, and D3.
  • An ellipse Q6 indicates the range of light taken by one optical sensor unit. The range of light that one photodiode captures is substantially the same as the range of light that one optical sensor unit captures.
  • the photodiodes D1, D2 , D3 receive light having an area of about 57000 ⁇ m 2 .
  • FIG. 12 is a cross-sectional view showing a configuration example when the outer end 28t of the sensor opening 28 is not shifted to the inner side of the outer ends D1t and D3t of the photodiodes D1 and D3.
  • the outer end 28t of the sensor opening 28 is substantially at the same position as the outer ends D1t and D3t of the outer photodiodes D1 and D3 in the projection in the thickness direction of the liquid crystal panel.
  • the photodiodes D1, D2, and D3 receive light having an area of about 63000 ⁇ m 2 .
  • the 12 indicates a range of light taken by each of the photodiodes D1, D2, and D3.
  • An ellipse Q7 indicates the range of light taken in by one optical sensor unit.
  • the range of light captured by one photosensor unit is wider than the range of light captured by one photodiode.
  • the outer end 28t of the sensor opening 28 shown in FIG. 11 is shifted inward by 10 ⁇ m from the outer end 28t of the sensor opening 28 shown in FIG. In the configuration shown in FIG. 11, compared to the configuration shown in FIG. 12, about 10% of unnecessary light can be removed, and the resolution can be improved.
  • one light sensor unit includes three light receiving units (photodiodes D1, D2, and D3). However, even if the number of light receiving units included in one photo sensor unit is further increased. Alternatively, two light receiving units may be provided.
  • the light receiving units are arranged in one direction.
  • the direction in which the light receiving units are arranged is not limited to one direction.
  • the light receiving units may be arranged side by side in two or more directions. In this case, in each direction, the end of the sensor opening may be shifted inward with respect to the outer end of the outermost light receiving unit.
  • the light receiving section in the first to third embodiments is not limited to a photodiode, and for example, a phototransistor or the like can be used as a light detection element.
  • the display device according to the present invention is not limited to a liquid crystal display device, and can be applied to any display device that displays an image with a plurality of pixels.
  • the present invention is industrially applicable as a display device having a sensor circuit in the pixel region of the TFT substrate.

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Abstract

Une perte de résolution est empêchée même dans des capteurs de lumière contenant une pluralité d'unités de réception de lumière. L'invention concerne un dispositif d'affichage présentant des capteurs de lumière, lequel présente une pluralité d'unités de détection de lumière sur une surface d'affichage pour afficher une image. Chaque unité de détection de lumière présente: une pluralité d'ouvertures (18a à 18c) destinées à recevoir des capteurs qui permet l'entrée de la lumière provenant d'une surface d'affichage d'images de la surface d'affichage; et une pluralité d'unités de réception de lumière (D1 à D3) qui sont respectivement disposées sous la pluralité d'ouvertures (18a à 18c) destinées à recevoir les capteurs. L'unité de détection de lumière reçoit la lumière qui est entrée par les ouvertures (18a à 18c) destinées à recevoir les capteurs et convertit ladite lumière en signaux électriques. En outre, la pluralité d'ouvertures (18a à 18c) destinées à recevoir les capteurs et la pluralité d'unités de réception de lumière (D1 à D3) sont conçues en parallèle au moins dans une direction, et parmi la pluralité d'ouvertures (18a à 18c) destinées à recevoir les capteurs, les ouvertures (18a et 18c) destinées à recevoir les capteurs positionnés sur le côté extérieur sont disposées de manière à être décalées vers l'intérieur par rapport aux unités de réception de lumière (D1 et D3) qui sont disposées sur le côté inférieur des ouvertures (18a et 18c) destinées à recevoir les capteurs.
PCT/JP2010/071899 2009-12-09 2010-12-07 Dispositif d'affichage WO2011071038A1 (fr)

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EP10835958A EP2498123A1 (fr) 2009-12-09 2010-12-07 Dispositif d'affichage
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US20120242636A1 (en) 2012-09-27
EP2498123A1 (fr) 2012-09-12

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