JP4552719B2 - Electro-optical device and electronic apparatus - Google Patents

Description

  The present invention relates to an electro-optical device suitable for displaying various information.

  In the liquid crystal display device, a backlight is provided on the back side of the liquid crystal display panel in order to perform transmissive display. A backlight having LEDs of red, green, and blue as light sources generates white light by mixing light emitted from the LEDs, and the generated white light is transmitted to the back side of the liquid crystal display panel. Irradiate. A liquid crystal display device displays color light by transmitting white light emitted from a backlight through a color filter that transmits light of each wavelength of red, green, and blue stacked on the substrate of the liquid crystal display panel. Is realized.

  However, the LED of each color has a property that the luminous intensity characteristic is greatly changed due to a temperature change or a change with time, so that there is a problem that the color of the mixed white light also changes. In Patent Document 1, a light sensor is provided on the backlight side, the light intensity of light emitted from the LEDs of each color is directly detected, and the light intensity of the LED is adjusted based on the detection signal. Since the color of white light is not passed through a color filter, there is a problem that it is different from the color of white light desired by the observer.

JP 2004-342454 A

  This invention is made | formed in view of the above point, and makes it a subject to perform more suitable luminous intensity adjustment of LED by using the optical sensor provided with the pseudo filter which has the same transmittance | permeability as a color filter.

In one aspect of the present invention, an electro-optical device includes a pair of substrates, a plurality of colored layers disposed between the pair of substrates, and a plurality of light sources that emit light of different colors. And an illumination device that allows light to enter from one of the pair of substrates, and a light-transmitting device disposed on the one substrate and disposed outside an image display region, and transmitting the light to the plurality of colored layers. A plurality of second colored layers having the same rate, a light sensor that detects the light intensity of each color incident on the one substrate from the illumination device and transmitted through the plurality of second colored layers, and the light sensor Light source control means for controlling the light intensity of the plurality of light sources for each color based on the light intensity of the light of each color detected by.

The electro-optical device is a liquid crystal display device having a pair of substrates, for example, and a plurality of colored layers are disposed between the pair of substrates. The lighting device is a backlight, and makes light incident from one of the pair of substrates. The backlight is, for example, a light guide plate having a plurality of light sources that emit light of different colors on the end face, and LEDs of various colors such as red, green, and blue are used as the plurality of light sources. . The second colored layer is disposed on one substrate and disposed outside the image display area. The second colored layer is assumed to have the same light transmittance as that of the colored layer disposed between the pair of substrates. For example, the same colored layer disposed between the pair of substrates is used. The optical sensor detects the luminous intensity of light of each color that has entered the one substrate from the lighting device and transmitted through the plurality of second colored layers. The light source control means controls the light intensity of the plurality of light sources for each color based on the light intensity of the light of each color detected by the optical sensor. As a result, the electro-optical device can accurately adjust the color of the white light transmitted through the colored layer, that is, the white color displayed on the display screen, to the white color set at the time of product shipment.

  As a preferred embodiment of the electro-optical device, the plurality of second colored layers are provided on one end surface of the one substrate, and the one end surface is provided on the one substrate from the illumination device. This is the end face where the incident light propagates and reaches.

  In another aspect of the present invention, an electro-optical device includes a pair of substrates, a plurality of colored layers disposed between the pair of substrates, and a plurality of light sources that emit light of different colors. A light guide plate that is provided on the light end surface, propagates light emitted from the plurality of light sources, and enters light from one of the pair of substrates, and is disposed on the light guide plate and displays an image area And a plurality of second colored layers having the same light transmittance as the plurality of colored layers, and an optical sensor for detecting the light intensity of each color transmitted through the plurality of second colored layers And light source control means for controlling the light intensity of the plurality of light sources based on the light intensity of each color detected by the optical sensor.

  In a preferred embodiment of the above electro-optical device, the light intensity of the plurality of light sources varies depending on the amount of current flowing through the plurality of light sources, and the light source control means has the light intensity of the light of each color at a predetermined ratio. The amount of current flowing through the plurality of light sources is adjusted.

  In another aspect of the electro-optical device, the amount of current is adjusted so that the light source control unit adjusts the amount of current after the light sensor detects the light intensity of each color. 2 mA or less. As a result, the light intensity of the light source can be finely adjusted.

  In another aspect of the present invention, an electronic apparatus including the electro-optical device as a display unit can be configured.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the following embodiments, the present invention is applied to a liquid crystal display device.

[First embodiment]
(Liquid crystal display device)
First, the configuration of the liquid crystal display device according to the first embodiment of the present invention will be described. FIG. 1 is a cross-sectional view schematically showing a schematic configuration of a liquid crystal display device 100 according to the first embodiment. In FIG. 1, an active matrix driving method using a TFD element and a completely transmissive liquid crystal display device is taken as an example.

  In FIG. 1, the liquid crystal display device 100 is roughly divided into a liquid crystal display panel 30 and a backlight 50.

  In the liquid crystal display panel 30, an element substrate 91 and a color filter substrate 92 disposed so as to face the element substrate 91 are bonded to each other through a frame-shaped seal member 3, and liquid crystal is sealed inside the liquid crystal layer 4. Is formed. A conductive member 7 such as a plurality of gold particles is mixed in the frame-shaped seal member 3.

  The upper substrate 2 is formed of glass or the like, and on the inner surface of the upper substrate 2, colored layers 6 </ b> R and 6 </ b> G made of any of R (red), G (green), and B (blue) are provided for each subpixel SG. , 6B are formed. A color filter is constituted by the colored layers 6R, 6G, and 6B. In the figure, a pixel G indicates an area for one color pixel composed of RGB sub-pixels SG. In the following description or drawings, when a component is shown regardless of color, it is simply written as “colored layer 6”, and when a component is shown by distinguishing colors, for example, “colored layer 6R” I will write as follows.

  A black light-shielding layer BM is formed between the sub-pixels SG in order to prevent light from being mixed from one sub-pixel to the other sub-pixel, with the adjacent sub-pixels SG being separated. The black light shielding layer BM can be made of a black resin material, for example, a black pigment dispersed in a resin.

  A protective layer 18 made of a transparent resin or the like is formed on the colored layer 6 and the black light shielding layer BM. The protective layer 18 has a function of smoothing the level difference of the color filter between the colors, and is corroded or contaminated by chemicals used during the manufacturing process of the color filter substrate 92 and the liquid crystal display device 100 according to the present embodiment. Therefore, it has a function of protecting the colored layer 6. On the surface of the protective layer 18, a transparent electrode (scanning electrode) 32 such as striped ITO (Indium-Tin Oxide) is formed. One end of the transparent electrode 32 extends into the seal member 3 and is electrically connected to the conducting member 7 in the seal member 3.

  On the other hand, the lower substrate 1 is formed of glass or the like, and the scanning lines 31 are formed on the inner surface of the lower substrate 1 at regular intervals. A TFD element 21 and a pixel electrode 10 are formed on the inner surface of the lower substrate 1 for each subpixel. The scanning line 31 is electrically connected to the pixel electrode 10 via the corresponding TFD element. A voltage is applied between the pixel electrode 10 and the transparent electrode 32 to control the orientation of the liquid crystal in the liquid crystal layer 4, thereby changing the light transmittance and performing gradation display.

  Next, the backlight 50 will be described. The backlight 50 includes a light guide 51 and a light source 55 on the end surface of the light guide plate 51. The light source 55 includes RGB LEDs 56, that is, a red LED 56R, a green LED 56G, and a blue LED 56B. Further, the backlight 50 includes a reflection plate 52 on the reflection surface side of the light guide plate 51, and includes a diffusion plate 53 and a prism sheet 54 for emitting light uniformly on the light output surface side of the light guide plate 51.

  As the LEDs 56 of the respective colors of the light source 55 emit light, light enters from the end face of the light guide 51. The light incident on the light guide 51 propagates through the light guide 51 and is uniformly emitted to the outside toward the liquid crystal display panel 30 by the reflection plate 52, the diffusion plate 53 and the prism sheet 54. Of the irradiation light irradiated on the liquid crystal display panel 30 in this way, the illumination light traveling along the path T shown in FIG. 1 passes through the colored layer 6 and the liquid crystal layer 4 and reaches the observer. In this case, the irradiation light has a predetermined hue and brightness by transmitting through the colored layer 6 and the liquid crystal layer 4. Thus, a desired color display image is visually recognized by the observer.

  On the other hand, some of the irradiation light irradiated to the liquid crystal display panel 30 propagates through the lower substrate 1 by repeating reflection on the upper and lower surfaces of the lower substrate 1 along the path T2. It reaches the end surface of the lower substrate 1.

  A colored layer 12 and an optical sensor 11 are provided on the end surface of the lower substrate 1. FIG. 2 is an enlarged plan view of the end surface of the lower substrate 1 and shows the configuration of the optical sensor 11 and the colored layer 12. As illustrated in FIG. 2A, colored layers 12 </ b> R, 12 </ b> G, and 12 </ b> B, which are color filters for each color of RGB, are disposed on the end surface of the lower substrate 1. The same color filters as the colored layers 6R, 6G, and 6B are used for the colored layers 12R, 12G, and 12B, respectively. Therefore, the light transmittance of the colored layer 12 of each color is the same as the light transmittance of the colored layer 6 of each color. Further, the colored layers 12R, 12G, and 12B are provided with optical sensors 11R, 11G, and 11B, respectively. Accordingly, the photosensors 11 for the respective colors have the colored layers 12 for the respective colors on the front surface thereof, and detect light transmitted through the colored layers 12 for the respective colors. That is, the photosensor 11R detects the magnitude of R (red), the photosensor 11G detects the magnitude of G (green), and the photosensor 11B detects the magnitude of B (blue). Detect the size. Since the colored layer 12 of each color has the same light transmittance as the colored layer 6 of each color, the light intensity of each color detected by the optical sensor 11 detects the light intensity of each color when transmitted through the colored layer 6. The same luminous intensity as when Therefore, this colored layer 12 functions as the second colored layer in the present invention.

  Further, the optical sensor 11 can be a single optical sensor. As shown in FIG. 2B, in this case, the optical sensor 11 that is a single optical sensor has a single colored layer 12U in which colored layers 12R, 12G, and 12B are laminated on the front surface thereof. . Thereby, even if the optical sensor 11 is a single optical sensor, the light intensity of each color of RGB is obtained by detecting the light transmitted through the colored layer 12 of each color of RGB and taking the spectrum thereof. be able to. Thus, the number of sensors can be reduced by making the sensor 11 a single sensor.

  Furthermore, as shown in FIG. 1, the optical sensor 11 and the colored layer 12 are arranged on the end surface of the lower substrate 1, but are not limited thereto. Instead of disposing the optical sensor 11 and the colored layer 12 on the end surface of the lower substrate 1, the optical sensor 11 is disposed at the position indicated by the broken line 11b on the lower substrate 1, and the colored layer 12 is disposed at the position indicated by the broken line 12b. Also good. Even in this way, the optical sensor 11 can detect the light reflected by the upper and lower surfaces of the lower substrate 1 and can determine the luminous intensity of each color of RGB.

  The optical sensor 11 detects the light intensity of each color of RGB based on the incident light. The optical sensor 11 is electrically connected to the LED current control circuit 60. The LED current control circuit 60 is electrically connected to the LEDs 56 of each color, and adjusts the amount of current that flows to the LEDs 56 of each color based on the light intensity of each color detected by the optical sensor 11. If the amount of current flowing through the LED 56 is increased, the light emitted from the LED 56 becomes brighter, and if the amount of current passed through the LED 56 is decreased, the light emitted from the LED 56 becomes darker. Therefore, this LED current control circuit 60 functions as a light source control means in the present invention.

  The liquid crystal display device 100 is merely an example of various liquid crystal display devices to which the present invention can be applied. In other words, the driving method and element substrate of the liquid crystal display device to which the present invention is applied are not limited to those shown in the drawings, and the present invention can be applied to liquid crystal display devices having various configurations.

(White adjustment in RGB LEDs)
A general liquid crystal display device performs color display by transmitting white light emitted from a backlight through a color filter.

  FIG. 3A shows the spectral distribution of light from a backlight having LEDs of each color of RGB. In FIG. 3A, the horizontal axis indicates the wavelength [nm] of light, and the vertical axis indicates the relative emission intensity. The light of each color of RGB is emitted from the LED of each color. Accordingly, as shown in the graph of FIG. 3A, the light of the backlight having LEDs of each color of RGB has a peak wavelength for each color. In a liquid crystal display device having such a backlight, white light is generated by mixing light emitted from RGB LEDs.

  FIG. 3B shows the transmittance of each of the RGB color filters. In FIG. 3B, the horizontal axis indicates the light wavelength [nm], and the horizontal axis indicates the transmittance [%]. As shown in FIG. 3B, the transmittance of each RGB color filter has the property that the transmittance is highest in the wavelength range of each RGB color. Therefore, in a general liquid crystal display device, when displaying each color of RGB, it is possible to perform color display by transmitting only light in which the colored layer of each color is in the wavelength range of each color.

  FIG. 4 shows the color reproduction range of the liquid crystal display device using the respective light sources described above on the chromaticity diagram of the International Commission on Illumination (CIE). A color reproduction range 301 indicates a color reproduction range in a liquid crystal display device using RGB LEDs, and a color reproduction range 302 indicates a color reproduction range in a liquid crystal display device using a single-chip white LED. Single-chip white LEDs generate yellow light by exciting YAG (yttrium, aluminum, garnet) phosphors with blue light from blue LEDs, and white light by mixing blue light and yellow light. Irradiate. Therefore, in the liquid crystal display device using the single chip type white LED, the relative luminous intensity of R is low. Since the liquid crystal display device using RGB LEDs has higher R display performance than the liquid crystal display device using single-chip white LEDs, as shown in FIG. 4, the color reproduction range in the R direction accordingly. Also become wider.

  A liquid crystal display device using a single-chip white LED using only a blue LED can generate white light simply by turning on the blue LED. On the other hand, a liquid crystal display device using RGB LEDs mixes light emitted from three LEDs having different properties such as a red LED, a green LED, and a blue LED at a predetermined ratio to generate white light. I need to shine. Therefore, in a general liquid crystal display device using such RGB LEDs, the intensity of light emitted from each color LED is adjusted in advance at the time of product shipment, thereby adjusting the amount of current flowing to the LED to obtain a predetermined white light. The light intensity is adjusted to

  In a general liquid crystal display device, the white color displayed on the display screen is generated by mixing the light transmitted through the colored layers of each color of RGB after the light is completely transmitted through the liquid crystal layer. The color of white light. Since the light transmittance of the colored layer in the liquid crystal display panel varies depending on the thickness of the colored layer, the light emitted from the LEDs of each color of RGB passes through the colored layer, and thereby the light intensity of each color of RGB Changes. Therefore, on the backlight side, even if predetermined white light is generated by mixing light emitted from the RGB LEDs, the color of the white light after passing through the colored layer 6 is the predetermined color. It is not always the same as the color of white light. In other words, when white display is performed on the display screen, the white color visually recognized by the observer is not always the same as the color of the predetermined white light generated on the backlight side. In this way, since the ratio of the light intensity of each color of RGB constituting the white light changes depending on the transmittance of the colored layer, the observer can select the white color projected on the display screen and the predetermined generated on the backlight side. It looks different from the color of white light.

  In addition, the luminous intensity of each color LED also changes due to a temperature change, a change with time, and the like, and the characteristics of the change differ depending on the LED of each color. Therefore, if the amount of current flowing through each color LED is kept at the current amount set at the time of product shipment, the intensity of the light emitted from each color LED will change due to temperature change or change over time. Even if the light emitted from the LEDs of the respective colors is mixed, the white light is not the same as the initially set white light. For example, when the temperature rises, a blue LED has a property of becoming bright and a red LED has a property of becoming dark. Therefore, in a place where the temperature is high, the white color displayed on the display screen of the liquid crystal display panel becomes a bluish white color. In addition, among the RGB LEDs, the blue LED deteriorates the fastest and becomes darker as time elapses, whereas the red LED deteriorates the slowest. Therefore, as time passes, the white color displayed on the display screen of the liquid crystal display panel becomes reddish white.

  In the liquid crystal display device 100 of the first embodiment, as described above, the optical sensor 11 is installed on the end surface of the lower substrate 1, and the colored layer 12 is attached to the front surface of the optical sensor 11. Since the colored layer 12 is the same color filter as the colored layer 6, the intensity of each color of the white light transmitted through the colored layer 12 and mixed is the color of each color of the white light transmitted through the colored layer 6 and mixed. It becomes the same as the luminous intensity. After detecting the light of each color that has passed through the colored layer 12, the optical sensor 11 sends the detected light intensity of each color to the LED current control circuit 60 that is electrically connected to the optical sensor 11 as a detection signal. As will be described in detail later, the LED current control circuit 60 changes the amount of light of each color of white light by changing the amount of current flowing through the LED 56 based on the light intensity of each color detected by the light sensor 11. Adjust to the originally set white light ratio. Since the colored layer 12 has the same transmittance as that of the colored layer 6, the liquid crystal display device 100 adjusts the luminous intensity of each color LED based on the luminous intensity of each color detected by the optical sensor 11. The color of the white light transmitted through 6, that is, the white color displayed on the display screen can be accurately adjusted to the white color set at the time of product shipment.

  Further, the colored layer 6 is composed of three colored layers of RGB, but is not limited to this, and is further colored with four colors added with C (cyan), and further with Y (yellow). ), M (magenta), and C (cyan) may be used. In such a case, an optical sensor 11 having a colored layer of a newly added color on the front surface is provided on the end surface of the lower substrate 1. Then, the light intensity of each color including the newly added color is detected by the light sensor, and the ratio of the detected light intensity of each color becomes the ratio of the predetermined white light intensity set in advance. By adjusting the light intensity of the LEDs 56 of each color, the white color displayed on the display screen can be accurately adjusted to the white color set at the time of product shipment.

[Second Embodiment]
Next, the configuration of the liquid crystal display device according to the second embodiment of the present invention will be described. FIG. 5 is a cross-sectional view schematically showing a schematic configuration of the liquid crystal display device 100a according to the second embodiment. In the liquid crystal display device 100 according to the first embodiment, the optical sensor 11 is installed on the end surface of the lower substrate 1. However, in the liquid crystal display device 100 a according to the second embodiment, the optical sensor 11 includes the backlight 50. Installed on the end face of the light guide plate 51. The optical sensor 11 has the colored layer 12 on the front surface thereof, and is electrically connected to an LED current control circuit 60 that controls the amount of current of the LED 56.

  When the LEDs 56 of the respective colors of the light source 55 emit light, light enters from the light incident end surface 51 c of the light guide 51, and the light incident on the light guide 51 propagates inside the light guide 51. Of the light propagating through the light guide plate 51, the light emitted with an angle with the light exit surface 51a exceeding the critical angle passes through the diffusion plate 53 and the prism sheet 54 along the path T1, and then the liquid crystal display panel 30. Irradiate. On the other hand, among the light propagating through the light guide plate 51, the light whose angle with the light exit surface 51a does not exceed the critical angle is repeatedly reflected between the light exit surface 51a and the reflective surface 51b along the path T3. The end surface 51d is located opposite to the end surface 51c. The optical sensor 11 detects the light reaching the end surface 51d through the colored layer 12. Also by this, as in the case of the liquid crystal display device 100 according to the first embodiment, the optical sensor 11 can detect the luminous intensity of each RGB color that is the same as the luminous intensity of each RGB color transmitted through the colored layer 6. . Therefore, the liquid crystal display device 100a according to the second embodiment can accurately adjust the color of white light transmitted through the colored layer 6, that is, the white color displayed on the display screen, to the white color set at the time of product shipment. .

[LED current control processing]
Next, the LED current control process will be described using the liquid crystal display device 100 according to the first embodiment as an example. FIG. 6 is a block diagram of the LED current control circuit 60. The LED current control circuit 60 includes a CPU 61 and a memory 62 such as a RAM (Random Access Memory) connected to the CPU 61. The CPU 61 is electrically connected to the optical sensor 11 and the LED 56.

  In the liquid crystal display device 100, when the product is shipped, the white color displayed on the display screen is set. First, in the liquid crystal display panel 30, the liquid crystal layer 4 is in a state of completely transmitting light. Next, the white amount displayed on the display screen is set to a predetermined white color by adjusting the amount of current flowing through the LEDs 56 of the respective colors RGB. The ratio of the luminous intensity of the white light after passing through the colored layer 12 at this time is stored in the memory 62 as the ratio of the luminous intensity of the white light after passing through the colored layer 6. As an example of such white light, for example, white light having a color temperature of about 6500K, the ratio of the light intensity of each color of RGB at that time is approximately (R light intensity): (G light intensity): (B Intensity) = 4: 9: 1.

  As described above, the luminous intensity of the light emitted from the LEDs of each color of RGB changes depending on the temperature change and the time change, so it is necessary to periodically adjust the luminous intensity of the white light. This LED current control process will be described with reference to the flowchart of FIG.

  The optical sensor 11 detects the light intensity of each color of RGB that has passed through the colored layer 12, and supplies the detected light intensity of each color light to the CPU 61 as a detection signal D1 (step S1). The CPU 61 that has received the detection signal D1 obtains the light intensity ratio of each color of RGB based on the detection signal D1. The CPU 61 determines whether or not the light intensity ratio of each color of RGB is equal to the light intensity ratio of each color of white light at the time of product shipment stored in the memory 62 (step S2). When the CPU 61 determines that the light intensity ratio of each color of RGB is not equal to the light intensity ratio of each color of white light at the time of product shipment (step S2: No), the CPU 61 supplies the LED 56 of each color. The value of the control current D2 to be adjusted is adjusted (step S3). At this time, the adjustment amount for one time of the control current D2 is set to 0.2 [mA] or less. By doing so, it is possible to finely adjust the light intensity of the LED 56.

  After adjusting the control current D <b> 2 supplied to the LED 56, the CPU 61 has the light intensity ratio of each color of RGB detected by the optical sensor 11 equal to the light intensity ratio of each color light that becomes white light at the time of product shipment. Until it becomes, operation of step S1-step S3 is repeated. When the CPU 61 determines that the detected light intensity ratio of each color of RGB is equal to the light intensity ratio of each color of white light at the time of product shipment (step S2: Yes), the LED current control process is performed. Exit.

  As described above, the adjustment of the white light in the temperature change and the change over time is performed based on the light intensity of each color light transmitted through the colored layer 12 having the same light transmittance as that of the colored layer 6. The white color displayed on the screen can be accurately adjusted to the white color set at the time of product shipment. Note that the LED current control process similar to that described above is also performed in the liquid crystal display device 100a according to the second embodiment.

[Electronics]
Next, specific examples of electronic devices to which the liquid crystal display device 100 according to the present invention can be applied will be described with reference to FIG.

  First, an example in which the liquid crystal display device 100 according to the present invention is applied to a display unit of a portable personal computer (so-called notebook personal computer) will be described. FIG. 8A is a perspective view showing the configuration of this personal computer. As shown in the figure, a personal computer 710 includes a main body 712 having a keyboard 711 and a display 713 to which the liquid crystal display device 100 according to the present invention is applied.

  Next, an example in which the liquid crystal display device 100 according to the present invention is applied to a display unit of a mobile phone will be described. FIG. 8B is a perspective view showing the configuration of this mobile phone. As shown in the figure, the cellular phone 720 includes a plurality of operation buttons 721, a reception port 722, a transmission port 723, and a display unit 724 to which the liquid crystal display device 100 according to the present invention is applied.

  Electronic devices to which the liquid crystal display device 100 according to the present invention can be applied include a liquid crystal television and a viewfinder in addition to the personal computer shown in FIG. 8A and the mobile phone shown in FIG. Type / monitor direct-view type video tape recorder, car navigation device, pager, electronic notebook, calculator, word processor, workstation, videophone, POS terminal, digital still camera, etc.

It is a side view which shows schematic structure of the liquid crystal display device which concerns on 1st Embodiment. It is a plane enlarged view of the end surface of the lower substrate. It is a figure which shows the characteristic of a color filter and RGB LED. It is a chromaticity diagram showing a color reproduction range of a liquid crystal display device having RGB LEDs. It is a side view which shows schematic structure of the liquid crystal display device which concerns on 2nd Embodiment. It is a block diagram which shows a LED current control circuit. It is a flowchart which shows a LED current control process. It is the schematic which shows the electronic device to which the illuminating device of this invention is applied.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Lower substrate, 2 Upper substrate, 6 Colored layer, 11 Optical sensor, 51 Light guide plate, 55 Light source, 50 Illumination device, 100 Liquid crystal display device

Claims (5)

A pair of substrates;
A plurality of colored layers disposed between the pair of substrates;
A lighting device that has a plurality of light sources each emitting light of a different color, and makes light incident from one of the pair of substrates,
A plurality of second colored layers disposed on the one substrate and disposed outside an image display area, wherein the plurality of colored layers have the same light transmittance as the plurality of colored layers;
An optical sensor that detects the intensity of light of each color incident on the one substrate from the illumination device and transmitted through the plurality of second colored layers;
An electro-optical device comprising: light source control means for controlling the light intensity of the plurality of light sources for each color based on the light intensity of each color detected by the optical sensor. The plurality of second colored layers are disposed on one end surface of the one substrate,
The electro-optical device according to claim 1, wherein the one end surface is an end surface on which light incident on the one substrate from the illumination device propagates and reaches. The luminous intensity of the plurality of light sources varies depending on the amount of current flowing through the plurality of light sources,
3. The electro-optical device according to claim 1, wherein the light source control unit adjusts an amount of current flowing through the plurality of light sources until the light intensity of each color reaches a predetermined ratio. 4. The amount of current claims wherein the optical sensor is after detecting the intensity of each color light, the width of the adjustment amount in which the light source control means adjusts the amount of current characterized in that it is less 0.2mA 4. The electro-optical device according to 3 .   An electronic apparatus comprising the electro-optical device according to claim 1 in a display unit.

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