WO2006095734A1 - Display control device, display device, display control method, program for the display control method, and recording medium having recorded the program thereon - Google Patents

Abstract

A red light sensor (241C), a green light sensor (251C), and a blue light sensor (261C) are arranged on an LCD panel (220) of a display device (100), and the sensors detect conditions of light from LED backlight (200). Based on the conditions of the light from the LED backlight (200) detected by the red light sensor (241C), the green light sensor (251C), and the blue light sensor (261C), the display device (100) corrects, using a display conversion adjustment circuit (130), display conditions of videos at positions corresponding to the red light sensor (241C), the green light sensor (251C), and the blue light sensor (261C) on the LCD panel (220).

Description

 Specification

 DISPLAY CONTROL DEVICE, DISPLAY DEVICE, DISPLAY CONTROL METHOD, ITS PROGRAM, AND RECORDING MEDIUM CONTAINING THE PROGRAM

 Technical field

 The present invention relates to a display control device that adjusts the display state of an image on a display means, a display device, a display control method, a program thereof, and a recording medium on which the program is recorded.

 Background art

 Conventionally, a display control device that performs so-called dimmer control for adjusting the luminance of a backlight of a display device according to external light is known (for example, see Patent Document 1).

 [0003] In the device described in Patent Document 1, the reading cycle of a digital value obtained by converting the output of an optical sensor that detects external light is set in a memory depending on the environment in which the device is used intensively. . By adjusting and changing the reading cycle according to the usage environment in this way, the adjustment speed of the backlight luminance with respect to the external light is adjusted.

 [0004] Patent Document 1: JP 2001-142446 A (page 4, left column, page 4, right column)

 Disclosure of the invention

 Problems to be solved by the invention

[0005] However, in the configuration as described above, for example, when the luminance unevenness occurs in the backlight due to aging, for example, there is a problem that the display state of the entire image may not be adjusted appropriately. It is done.

An object of the present invention is to provide a display control device, a display device, a display control method, a program thereof, and a recording medium on which the program is recorded, which can appropriately adjust the display state of an image on a display unit. That is.

 Means for solving the problem

[0007] The display control apparatus of the present invention is provided in a display unit including a display region for displaying an image and an irradiation unit for irradiating light to the display region, and the display unit displays from the irradiation unit to the display region. In the display area by adjusting the transmission state or reflection state of incident light A display control device for adjusting a display state of an image, comprising: a light state detecting unit that is disposed at a predetermined position in the display region and detects a state of light from the irradiation unit incident on the predetermined position; Display state adjusting means for controlling to adjust the display state of the image at the predetermined position based on the state of light from the irradiation unit at the predetermined position detected by the light state detecting means; It is characterized by comprising.

 [0008] The display device of the present invention includes a display region for displaying an image, a display unit including an irradiation unit that irradiates light to the display region, and the display control device of the present invention described above. It is characterized by.

 [0009] The display control method of the present invention is applied to a display unit including a display region for displaying an image and an irradiation unit for irradiating light to the display region, and is incident on the display region from the irradiation unit. A display control method for adjusting a display state of an image in the display region by adjusting a transmission state or a reflection state of light, wherein the state of light from the irradiation unit incident on a predetermined position in the display region is determined. And detecting and adjusting the display state of the image at the predetermined position based on the detected state of light from the irradiation unit at the predetermined position.

 [0010] The display control program of the present invention is characterized in that the calculation means functions as the above-described display control device of the present invention.

 [0011] A display control program of the present invention is characterized by causing a calculation means to execute the above-described display control method of the present invention.

 [0012] A recording medium on which the display control program of the present invention is recorded is characterized in that the display control program of the present invention described above is recorded so as to be readable by an arithmetic means. Brief Description of Drawings

 FIG. 1 is a block diagram showing a schematic configuration of a display device according to a first embodiment of the present invention.

 FIG. 2 is a schematic diagram showing a schematic configuration of an LCD panel according to the first embodiment and the second embodiment of the present invention.

FIG. 3 is a schematic diagram showing a schematic configuration of a red subpixel, a green subpixel, and a blue subpixel in the first embodiment. FIG. 4 is a flowchart showing a luminance unevenness correction process for video in the first embodiment.

 FIG. 5 is a block diagram showing a schematic configuration of a display device according to the second embodiment.

FIG. 6 is a schematic diagram showing a schematic configuration of a red subpixel, a green subpixel, and a blue subpixel in the second embodiment.

 FIG. 7 is a flowchart showing a video color misregistration correction process in the second embodiment.

 FIG. 8 is a schematic diagram showing a schematic configuration of a red subpixel, a green subpixel, and a blue subpixel according to another embodiment of the present invention.

Explanation of symbols

 100, 300 display

 110, 310 Display as display means

 130, 320 Display conversion adjusting circuit constituting display state adjusting means and display control device

 191 Pixel average calculating means constituting display state adjusting means and display control device 192 Luminance correction coefficient setting means constituting display state adjusting means and display control device

 200 Backlight as irradiator

 220, 360 LCD panel as display area

 243, 383 LCD

 241C Red light sensor as light state detection means constituting display control device

 251C Green light sensor as light state detection means constituting display control device

 261C Blue light sensor as light state detection means constituting display control device

 341 Subpixel average calculating means constituting display state adjusting means and display control device

 342 Color correction coefficient setting means constituting display state adjusting means and display control device

Pixel as 370 pixels

380 Red sub-pixel as first liquid crystal element 381C Color filter as a red transmission means

 381D Red light sensor as first light intensity detecting means constituting display control device and light state detecting means

 390 Green sub-pixel as second liquid crystal element

 391D Green light sensor as second light intensity detecting means constituting display control device and light state detecting means

 391C Color filter as green transmission means

 400 Blue subpixel as third liquid crystal element

 401C Color filter as blue transmissive means

 401D Blue light sensor as third light intensity detecting means constituting display control device and light state detecting means

 BEST MODE FOR CARRYING OUT THE INVENTION

 [First Embodiment]

 Hereinafter, a first embodiment according to the present invention will be described with reference to the drawings. In the present embodiment, a display device including the display control device of the present invention, which is mounted on a moving body, for example, a vehicle and displays map information, store information, or a television image, will be described as an example. Note that the display device is not limited to a configuration mounted on a vehicle, and can be any configuration that displays various types of information, such as a configuration arranged in a home or a factory. FIG. 1 is a block diagram showing a schematic configuration of the display device. FIG. 2 is a schematic diagram showing a schematic configuration of an LCD (Liq uid Crystal Display) panel. FIG. 3 is a schematic diagram showing a schematic configuration of a red subpixel, a green subpixel, and a blue subpixel.

 [Configuration of display device]

In FIG. 1, 100 is a display device. The display device 100 appropriately displays a video based on a video signal output from a video signal output device (not shown). In addition, the display device 100 includes an RGB (Red, Green, Blue) _LED (Light Emitting Diode) backlight (hereinafter referred to as a “knock light”) described later. Hereinafter, the display state of the video is corrected as appropriate based on luminance unevenness. The display device 100 includes a display unit 110 as a display unit, and video signal processing. Unit 120, display conversion adjustment circuit 130, RGB—LED driver (hereinafter referred to as LED driver) 140, timing unit 150, dimmer sensor 160, AZD (Analog / Digital) conversion unit 170, and memory 180 , A processing unit 190, and the like.

 Display unit 110 is connected to timing unit 150, and appropriately displays video based on the video signal from the video signal output device. The display unit 110 includes an LED backlight 200 as an irradiation unit, an LCD (Liquid Crystal Display) unit 210, and the like.

 The LED backlight 200 appropriately irradiates substantially white light having substantially the same luminance from the back surface of the LCD unit 210 to the entire LCD panel 220 described later of the LCD unit 210 under the control of the timing unit 150. The LED backlight 200 has a light guide plate (not shown) formed in a substantially rectangular box shape whose horizontal direction is longer than the vertical direction, for example. For example, on one side edge of the light guide plate, a plurality of red LEDs (not shown) that emit red light, a plurality of green LEDs (not shown) that emit green light, and a plurality of blue LEDs (not shown) that emit blue light are arranged at predetermined intervals. It is arranged. Then, when the LED backlight 200 obtains an irradiation light setting signal for irradiating light of a predetermined color and a predetermined light amount from the timing unit 150, the LED backlight 200 emits light of a color and a light amount based on the irradiation light setting signal. Red LED, green LED, and blue LED are emitted in the state. In other words, light of a color and a light amount based on the irradiation light setting signal is emitted toward the LCD unit 210 through the light guide plate. Here, instead of the LED backlight 200, a backlight using a light bulb, an EL (Electro Luminescence), a fluorescent lamp, or the like may be used. The surface on the side where light is output in the LED knock light 200 will be referred to as the surface of the LED backlight 200.

 Based on the control of the timing unit 150, the LCD unit 210 appropriately displays an image using the light of the LED backlight 200. The LCD unit 210 includes an LCD panel 220 as a display area, a signal line driving circuit 270, a scanning line driving circuit 280, and the like.

As shown in FIG. 2, the LCD panel 220 is formed in a substantially rectangular plate shape whose horizontal direction is longer than the vertical direction, and is disposed on the surface side of the LED backlight 200. The LCD nonel 220 includes N pixels 230 in the horizontal direction, M pixels in the vertical direction (N and M are natural numbers), and (NXM) pixels 230 arranged side by side. Here, with respect to the upper left corner of the LCD panel 220 in FIG. The description 230 is referred to as i (i = PXQ) pixel 230 as appropriate. The pixel 230 adjusts the transmission state of light emitted from the LED backlight 200 under the control of the timing unit 150 and outputs the light in a predetermined color. The pixel 230 includes a red sub-pixel 240, a green sub-pixel 250, a blue sub-pixel 260, and the like arranged in a horizontal direction. In the following description, since the red subpixel 240, the green subpixel 250, and the blue subpixel 260 have substantially the same structure, only the red subpixel 240 will be described in detail. 250 and blue sub-pixel 260! /, Simplifying the description.

 [0021] The red sub-pixel 240 appropriately outputs the light from the LED backlight 200 in red with a predetermined intensity. As shown in FIG. 3, the red sub-pixel 240 includes a first substrate unit 241, a second substrate unit 242, a liquid crystal 243, and the like.

 The first substrate unit 241 is provided adjacent to the surface of the LED backlight 200. The first base plate portion 241 has a first glass substrate 241A having substantially the same shape as the substantially rectangular shape of the LCD panel 220. The surface of the first glass substrate 241A on the LED backlight 200 side (hereinafter referred to as one side) has, for example, substantially the same shape as the first glass substrate 241A and has a first direction for polarizing light in a predetermined direction. 1 polarizing plate 241B is laminated. Further, on the other side of the first glass substrate 241A, a red light sensor 241C as a light state detecting means, a TFT (Thin Film Transistor) 241D, and a pixel electrode 241E are arranged in the opposite direction. It is arranged by.

[0023] The red light sensor 241C is connected to the AZD converter 170 as shown in FIG. Further, as shown in FIG. 3, the red light sensor 241C is provided on the first alignment film 241F side, which will be described later, and is incident on the LED backlight that is incident through the first glass substrate 241A and the first polarizing plate 241B. The light receiving surface 241C1 that receives the red light included in the light from the light 200 and the liquid crystal 243 provided on the surface opposite to the light receiving surface 241C1, for example, shields the light that is also incident by the external force of the display device 100. And a mask 241C2. The red light sensor 241C detects the intensity of the LED backlight 200 received by the light receiving surface 241C1, and converts the detected intensity into the subpixel luminance Yri (i is the number of the pixel 230 having the red subpixel 240). Output to the AZD converter 170 as an analog signal. The TFT 241D has a source for the signal line driver circuit 270, a drain for the pixel electrode 241E, and a gate for the scan line driver circuit 280. Are connected. When a gate signal is input from the scanning line driving circuit 280, the TFT 241D applies a predetermined voltage to the pixel electrode 241E and a counter electrode 242D described later under the control of the signal line driving circuit 270. On the other side of the mask 241C2, TFT 241D, and pixel electrode 241E, for example, a first alignment film 241F having substantially the same shape as the first glass substrate 241A and arranging molecules of the liquid crystal 243 in a certain direction is laminated. Yes.

 The second substrate unit 242 is disposed on the other side of the first substrate unit 241. The second base plate portion 242 has a second glass substrate 242A having substantially the same shape as the first glass substrate 241A. On the other surface of the second glass substrate 242A, for example, the light has substantially the same shape as the second glass substrate 242A and the light is polarized in a direction substantially orthogonal to the polarization direction of the first polarizing plate 241B. A second polarizing plate 242B is stacked. Further, a red color filter 242C is laminated on one surface of the second glass substrate 242A. Further, a counter electrode 242D is disposed on one surface of the color filter 242C. Further, a second alignment film 242E is arranged on one side of the counter electrode 242D, in which the molecules of the liquid crystal 243 are arranged in a fixed direction substantially orthogonal to the direction in which the first alignment film 241F is arranged.

 The liquid crystal 243 is provided between the first alignment film 241F and the second alignment film 242E. The molecules of the liquid crystal 243 are twisted by about 90 ° by the first alignment film 241F and the second alignment film 242E in a state where no voltage is applied to the pixel electrode 241E and the counter electrode 242D, that is, the LED back. The light 200 is arranged in a state that does not transmit light! Further, when a predetermined voltage is applied to the pixel electrode 241E and the counter electrode 242D, the molecules in the liquid crystal 243 are aligned in the direction along the electric field according to the predetermined voltage, that is, in the LED backlight 200. It changes to a state of transmitting light. As a result, the red sub-pixel 240 appropriately transmits the light of the LED backlight 200 through the liquid crystal 243 in a state corresponding to the voltage, and outputs it as red light having a predetermined intensity via the color filter 242C.

[0026] The green sub-pixel 250 appropriately outputs the light from the LED backlight 200 in green having a predetermined intensity. The green subpixel 250 includes a first substrate portion 251, a second substrate portion 252, a liquid crystal 243, and the like. The first glass substrate 241A of the first substrate unit 251 includes a green light sensor 251C as a light state detection unit, a TFT 251D, and a pixel electrode 251E. It is arranged. The green light sensor 251C has a light receiving surface 251C1 and a mask 251C2, detects the intensity of green light contained in the light of the LED backlight 200 received by the light receiving surface 251C1, and uses this intensity as the subpixel luminance Ygi (i is green Converted to pixel 230 having sub-pixel 250) and output. A green color filter 252C is laminated on the second glass substrate 242A of the second substrate portion 252. Further, the green sub-pixel 250 outputs the light of the LED backlight 200 as green light having a predetermined intensity via the color filter 252C according to the voltage applied to the pixel electrode 251E and the counter electrode 242D.

 [0027] The blue subpixel 260 appropriately outputs the light from the LED backlight 200 in blue having a predetermined intensity. The blue subpixel 260 includes a first substrate portion 261, a second substrate portion 262, a liquid crystal 243, and the like. On the first glass substrate 241A of the first substrate portion 261, a blue light sensor 261C as a light state detection means, a TFT 261D, and a pixel electrode 261E are disposed. The blue light sensor 261C has a light receiving surface 261C1 and a mask 261C2, detects the intensity of blue light contained in the light of the LED backlight 200 received by the light receiving surface 261C1, and uses this intensity as the subpixel luminance Ybi (i is The pixel 230 having the blue sub-pixel 260). On the second glass substrate 242A of the second substrate portion 262, a blue color filter 262C is laminated. Furthermore, the blue subpixel 260 outputs the light of the LED backlight 200 as blue light having a predetermined intensity via the color filter 262C according to the voltage applied to the pixel electrode 261E and the counter electrode 242D.

 [0028] Then, the pixel 230 outputs light of a color obtained by synthesizing red, green, and blue lights having predetermined intensities output from the red subpixel 240, the green subpixel 250, and the blue subpixel 260. A sensor capable of detecting the light of all colors included in the light from the LED backlight 200, that is, the intensity of white light, may be applied to the red light sensor 241C, the green light sensor 251C, and the blue light sensor 261C.

[0029] The signal line driving circuit 270 is connected to the sources of the TFTs 241D, 251D, and 261D as described above. Then, the signal line driver circuit 270 applies a predetermined voltage to the pixel electrodes 241E, 251E, 261E and the counter electrode 242D via predetermined TFTs 241D, 251D, 261D. Specifically, the signal line driving circuit 270 receives red, green, and blue having predetermined intensities from the timing unit 150 with predetermined red subpixels 240, green subpixels 250, and blue subpixels 260. A luminance correction video signal for outputting color light is acquired. Further, a first specific signal indicating that the red subpixel 240, the green subpixel 250, and the blue subpixel 260 are specified is acquired. Then, a voltage corresponding to a red output value Ro (to be described later) of the luminance-corrected video signal is applied to the pixel electrode 241 E and the counter electrode 242D of the red sub-pixel 240 corresponding to the first specific signal via the TFT 241D. . In addition, the signal line driving circuit 270 applies voltages corresponding to the green output value Go and the blue output value Bo, which will be described later, of the luminance correction video signal to the pixel electrodes 25 IE and 261E and the counter electrodes of the green subpixel 250 and the blue subpixel 260. Apply to 242D.

 [0030] The scanning line driving circuit 280 is connected to the gates of the TFTs 241D, 251D, and 261D as described above. Then, the scanning line driving circuit 280 acquires a second specific signal indicating that the red subpixel 240, the green subpixel 250, and the blue subpixel 260 are specified from the timing unit 150, and uses the second specific signal as the second specific signal. The gate signals are appropriately output to the TFTs 241D, 251D, and 261D of the corresponding red subpixel 240, green subpixel 250, and blue subpixel 260.

 The video signal processing unit 120 is connected to the display conversion adjustment circuit 130. In addition, a video information output device (not shown) is detachably connected to the video signal processing unit 120. This video signal processing unit 120 also acquires a video signal for causing the display unit 110 to display a video with the video information output device capability. The video signal is appropriately processed and output to the display conversion adjustment circuit 130.

 The display conversion adjustment circuit 130 is connected to the timing unit 150 and the processing unit 190, and appropriately adjusts the video display state on the display unit 110. Specifically, the display conversion adjustment circuit 130 acquires the video signal processed by the video signal processing unit 120. Also, a luminance correction coefficient signal related to the luminance correction coefficient Hi (i is the number of pixel 230) set based on the luminance unevenness of the LED backlight 200 is acquired from the processing unit 190. The display conversion adjustment circuit 130 then calculates an ideal luminance value Rki (i is the number of the pixel 230) for outputting an image with the influence of the luminance unevenness of the LED backlight 200 being minimized, based on Equation 1 shown below. ) Is calculated.

 [0033] Rki = Eai X γ X Hi ... (1)

 [0034] Rki: ideal luminance value of pixel number 230

Eai: The luminance signal value of the video signal corresponding to the i-th pixel 230 y: Gamma correction coefficient for performing gamma correction processing

 Hi: Brightness correction coefficient for pixel i 230

[0035] Further, the display conversion adjustment circuit 130 outputs the light based on the ideal luminance value Rki to the pixel 230, and the luminance of the light to be output to the red subpixel 240, the green subpixel 250, and the blue subpixel 260, respectively. Set red output value Ro, green output value Go, and blue output value Bo corresponding to. Then, using the red output value Ro, the green output value Go, and the blue output value Bo as the luminance-corrected video signals, the first specific signal and the first specific signal for specifying the red subpixel 240, the green subpixel 250, and the blue subpixel 260 are used. The two specific signals, the synchronization signal, and the clock signal are output to the timing unit 150 at a predetermined timing, that is, at the video drawing timing in the LCD unit 210.

 The LED driver 140 is connected to the timing unit 150 and the processing unit 190, and appropriately irradiates the LED backlight 200 with predetermined light via the timing unit 150. Specifically, the LED driver 140 includes a red backlight amount (hereinafter referred to as a red BL amount) corresponding to red, green, and blue amounts of light emitted from the processing unit 190 with the LED backlight 200, and green. A light amount signal relating to the backlight light amount (hereinafter referred to as the green BL light amount) and the blue backlight light amount (hereinafter referred to as the blue BL light amount) is appropriately acquired. Then, generate the irradiation light setting signal to set the red, green, and blue light amounts of the light emitted from the LED backlight 200 to the red BL light amount, green BL light amount, and blue BL light amount of the light amount signal. Output to 150.

 The timing unit 150 is connected to the LED backlight 200, the signal line driving circuit 270, the scanning line driving circuit 280, and the like. In addition, the timing unit 150 appropriately acquires an irradiation light setting signal from the LED driver 140. Then, the irradiation light setting signal is appropriately output to the LED backlight 200. In addition, the timing unit 150 appropriately acquires the brightness correction video signal, the first specific signal, the second specific signal, the synchronization signal, the clock signal, and the like from the display conversion adjustment circuit 130. Then, the luminance correction video signal and the first specific signal are output to the signal line driving circuit 270, and the second specific signal is output to the scanning line driving circuit 280.

[0038] The daymer sensor 160 is connected to the processing unit 190. The dimmer sensor 160 is disposed, for example, in a state facing the housing, not shown, and detects the intensity of light outside the display device 100. The external light intensity signal related to the detected light is processed. Outputs appropriately to the physical unit 190.

 [0039] The AZD conversion unit 170 is connected to the processing unit 190. The AZD converter 170 also acquires analog signals for the red light sensor 241C, the green light sensor 251C, and the blue light sensor 261C, and converts the subpixel luminances Yri, Ygi, Ybi of these analog signals into digital signals for processing. Output to part 190.

 The memory 180 is connected to the processing unit 190. This memory 180 stores various information necessary for video display processing so that they can be read out as appropriate. Further, the memory 180 appropriately uses, for example, a later-described luminance variation value Ki (i is the number of the pixel 230) calculated by the processing unit 190 before product shipment as the previous luminance variation value Ti (i is the number of the pixel 230). Memorize it as readable. Here, the previous luminance variation value Ti is appropriately updated by the processing unit 190 when the display device 100 is used by the user. Furthermore, the memory 180 stores various programs developed on an OS (Operating System) that controls the operation of the entire display device 100.

 [0041] The processing unit 190 includes various input / output ports (not shown) such as a display conversion port to which the display conversion adjustment circuit 130 is connected, a driver port to which the LED driver 140 is connected, a timing port to which the timing unit 150 is connected, A dimmer port to which the dimmer sensor 160 is connected, an AZD port to which the AZD converter 170 is connected, a memory port to which the memory 180 is connected, and the like. As shown in FIG. 1, the processing unit 190 includes, as shown in FIG. 1, a pixel average calculation unit 191, a luminance correction coefficient setting unit 192, a backlight control unit (hereinafter referred to as a BL control unit) 193, and the like. It has. Here, the display conversion adjustment circuit 130, the pixel average calculation means 191 and the brightness correction coefficient setting means 192 constitute the display state adjustment means of the present invention. Further, the display control device of the present invention is configured by the display state adjusting means, the red light sensor 241C, the green light sensor 251C, and the blue light sensor 261C.

The pixel average calculation means 191 appropriately calculates the average luminance (hereinafter referred to as pixel average luminance) Ap of all the pixels 230. Specifically, the pixel average calculation means 191 acquires the sub-pixel luminances Y ri, Ygi, Ybi of all the pixels 230 output as digital signals from the A / D conversion unit 170 and stores them in the memory 180. Further, based on Equation 2 below, the luminance of each pixel 230 (hereinafter referred to as pixel luminance) Ypi is calculated and stored in the memory 180. Remind me. Then, the pixel average calculation means 191 calculates the average value of the pixel luminance Ypi for all the pixels 230 as the pixel average luminance Ap and stores it in the memory 180.

 [0043] Ypi = AXYri + B XYgi + C XYbi ... (2)

 [0044] Ypi: Pixel brightness of pixel i 230

 A, B, C: Predetermined coefficients indicating the lightness of red, green and blue

 The luminance correction coefficient setting unit 192 sets the luminance correction coefficient Hi of each pixel 230 based on the pixel average luminance Ap calculated by the pixel average calculation unit 191. Specifically, the luminance correction coefficient setting means 192 acquires the pixel average luminance Ap and the pixel luminance Ypi of the i-th pixel 230 from the memory 180. Then, a value obtained by subtracting the pixel average luminance Ap from the pixel luminance Ypi is calculated as the luminance variation value Ki (i is the number of the pixel 230). Here, the luminance variation value Ki indicates that the pixel i of the i-th pixel 230-power LCD panel 220 is brighter than the average when the value is positive, and indicates that the portion is brighter than the average when the value is negative.示 す indicates that it is a part. Also, the luminance correction coefficient setting means 192 calculates whether or not there is a previous luminance variation value Ti different from the luminance variation value Ki after calculating the luminance variation value Ki of all the pixels 230. If it is determined that it exists, a process for storing the brightness variation value Ki as the previous brightness variation value Ti, that is, a process for updating the previous brightness variation value Ti is performed.

[0046] Further, the luminance correction coefficient setting means 192 acquires the previous luminance variation value Ti of all the pixels 230 from the memory 180, and the previous luminance variation value Ti has the smallest value, that is, the pixel 230, that is, the darkest pixel. Recognize 230. Then, the pixel luminance Ypi of the pixel 230 with the smallest luminance variation value is recognized as the minimum luminance Ypm. The brightness correction coefficient setting means 192 calculates and sets a value obtained by dividing the minimum brightness Ypm by the pixel brightness Ypi as the brightness correction coefficient Hi of the i-th pixel 230. Here, the luminance correction coefficient Hi of the pixel 230 corresponding to the minimum luminance Ypm is 1. In addition, the luminance correction coefficient Hi of the pixel 230 that does not correspond to the minimum luminance Ypm is less than 1. In other words, the luminance correction coefficient Hi reduces the luminance of the pixel 230 not corresponding to the minimum luminance Ypm without decreasing the luminance of the pixel 230 corresponding to the minimum luminance Ypm, as shown in Equation 1. Thus, the value is used to minimize the influence of the luminance unevenness of the LED backlight 200. And The luminance correction coefficient setting means 192 converts the luminance correction coefficient Hi into a luminance correction coefficient signal as appropriate and outputs it to the display conversion adjustment circuit 130.

 [0047] The BL control means 193 performs control to appropriately set the color of light emitted from the LED backlight 200. Specifically, when the BL control unit 193 recognizes that the power of the display device 100 is turned on by an input operation of an input unit (not shown), for example, the BL control unit 193 is set according to the dimmer sensor 160 by a manufacturer or a user. Recognizes the red, green, and blue BL light levels for irradiating the light in the current state. Then, a light amount signal relating to the red BL light amount, the green BL light amount, and the blue BL light amount is generated and output to the LED driver 140.

 [0048] [Operation of display device]

 Next, as an operation of the display device 100, an uneven luminance correction process for an image will be described with reference to the drawings. FIG. 4 is a flowchart showing a process for correcting the luminance unevenness of the video.

 [0049] First, when the processing unit 190 recognizes that an input operation for turning on the display device 100 is performed by an input operation of the input unit by the user, the BL control means The LED backlight 200 is turned on under the control of 193 (step S101). Then, the intensity of the LED backlight 200 is measured as the subpixel brightness Yri, Ygi, Ybi with the red light sensor 241C, the green light sensor 251C, and the blue light sensor 261C of all the pixels 230 (step S102), and an analog signal is obtained. To the AZD converter 170. Thereafter, the display device 100 converts the analog signal into a digital signal by the AZD conversion unit 170 (step S 103), and outputs it to the processing unit 190.

[0050] When the pixel average calculation means 191 obtains the sub-pixel luminances Yri, Ygi, Ybi from the AZD conversion unit 170, the processing unit 190 calculates the pixel luminance Ypi of each pixel 230 based on these ( Step S 104). Further, the pixel average brightness Ap is calculated based on the calculated pixel brightness Ypi (step S 105). Thereafter, the processing unit 190 calculates the luminance variation value Ki of each pixel 230 by the luminance correction coefficient setting means 192 (step S106), and the previous luminance variation value Ti different from the luminance variation value Ki exists. It is determined whether or not it is OK (step S107). If it is determined in step S107 that the previous luminance variation value Ti is the same value as the luminance variation value Ki, the luminance correction coefficient Hi of each pixel 230 is set based on the previous luminance variation value Ti ( Step S108) The positive coefficient Hi is output to the display conversion adjustment circuit 130 as a luminance correction coefficient signal. On the other hand, if it is determined in step S107 that the previous luminance variation value Ti different from the luminance variation value Ki exists, the previous luminance variation value Ti different from this luminance variation value Ki is updated (step S107). S109), the process of step S108 is performed.

 [0051] Then, when the display conversion adjustment circuit 130 acquires the luminance correction coefficient signal and the video signal, the display conversion adjustment circuit 130 obtains the luminance correction coefficient signal of each pixel 230 based on the luminance correction coefficient Hi of the luminance correction coefficient signal and the luminance signal value Eai of the video signal. The ideal luminance value Rki is calculated (step S110). Thereafter, the display conversion adjustment circuit 130 generates a luminance correction video signal based on the ideal luminance value Rki (step S111), and the first specific signal, the second specific signal, the synchronization signal, and the clock signal. At the same time, the luminance correction video signal and the like are output to the timing unit 150 in accordance with the drawing timing of the LCD unit 210. Further, when the timing unit 150 obtains various signals from the display conversion adjustment circuit 130, the timing unit 150 outputs a luminance correction video signal and the like to the signal line driving circuit 270 and the scanning line driving circuit 280 (step S112). Then, when the signal line driving circuit 270 and the scanning line driving circuit 280 acquire the luminance correction video signal, the light corresponding to the red output value Ro, the green output value Go, and the blue output value Bo of the luminance correction video signal, that is, A writing process of a luminance correction video signal for causing each pixel 230 to output light corresponding to the ideal luminance value Rki is performed (step S113), and the luminance unevenness correction process of the video is finished.

 [0052] [Effects of the first embodiment]

As described above, in the first embodiment, the red light sensor 241C, the green light sensor 25 1C, and the blue light sensor that detect the state of light from the LED backlight 200 are provided on the LCD panel 220 of the display device 100. 261C. The display device 100 is based on the state of light from the LED backlight 200 detected by the red light sensor 241C, the green light sensor 251C, and the blue light sensor 261C in the display conversion adjustment circuit 130. Correct the display state of the image at the position corresponding to the red light sensor 241C, green light sensor 251C, and blue light sensor 261C of the LCD panel 220. For this reason, when the state of light irradiating a predetermined position on the LCD panel 220 changes from the initial state due to, for example, aging degradation of the LED backlight 200, the display device 100 can detect red light disposed at the predetermined position. Sensor 241C, Green Light Sensor 251C, Blue Light Sensor 261C It is possible to correct the display state of the image at the position where the state has changed. Therefore, the display device 100 can appropriately adjust the display state of the video.

 [0053] In addition, display device 100 outputs to LCD unit 210 a luminance-corrected video signal obtained by correcting video signal based on the detection state of light from LED backlight 200 by display conversion adjustment circuit 130 and processing unit 190. Then, the process of adjusting the transmission state of the light from the LED backlight 200 in the LCD panel 220 is performed as a process of correcting the display state of the video. For this reason, the display state of the image at the position where the light state has changed can be appropriately corrected with a simple configuration that only adjusts the transmission state of each pixel 230 of the LCD panel 220. In addition, even when using a backlight of a light bulb, for example, where the light emission state is difficult to adjust compared to the LED knock light 200, the display state of the image at the position where the light state has changed can be easily adjusted.

 [0054] The display state is corrected by adjusting the transmission state in units of 230 pixels. Therefore, the display device 100 can adjust the display state of the image more finely.

[0055] Further, the luminance correction coefficient setting means 192 is used to adjust the luminance unevenness of the LED backlight 200 based on the subpixel luminances Yri, Ygi, Ybi detected by the red light sensor 241C, the green light sensor 251C, and the blue light sensor 261C. The corresponding brightness variation value Ki is calculated and stored as the previous brightness variation value Ti as appropriate. The display conversion adjustment circuit 130 calculates an ideal luminance value Rki based on the luminance signal value Eai related to the luminance of the image in the video signal and the luminance correction coefficient Hi based on the previous luminance variation value Ti. Outputs a luminance-corrected video signal for causing the pixel 230 to output light having luminance based on the ideal luminance value Rki. For this reason, the display device 100 can correct the display state of the video so that the influence of the luminance unevenness is minimized even when the luminance unevenness occurs due to the deterioration of the LED backlight 200 over time.

[0056] Also, the luminance correction coefficient setting means 192 recognizes the pixel 230 corresponding to the most part of the LCD non-node 220 based on the previous luminance variation value Ti! The brightness Ypi is recognized as the minimum brightness Ypm. Then, the luminance of the pixel 230 corresponding to the minimum luminance Ypm is not changed with respect to the video signal, and the luminance of the pixel 230 not corresponding to the minimum luminance Ypm is reduced to reduce the luminance unevenness of the LED backlight 200. Outputs brightness correction coefficient Hi to minimize display noise to display conversion adjustment circuit 130 . For this reason, the display device 100 can more easily adjust the display state of the video simply by adjusting the transmission state of the specific pixel 230 to lower the luminance.

[0057] Further, the red light sensor 241C, the green light sensor 251C, and the blue light sensor 261C are disposed closer to the LED backlight 200 than the liquid crystal 243 in the red subpixel 240, the green subpixel 250, and the blue subpixel 260. . For this reason, the red light sensor 241C, the green light sensor 251C, and the blue light sensor 261C can detect the intensity of light of each color without going through the liquid crystal 243, and increase the intensity of light of each color corresponding to the uneven brightness of the LED backlight 200. It can be detected accurately. Therefore, the display device 100 can adjust the display state of the video more appropriately. Furthermore, since the intensity of light of each color can be detected without going through the liquid crystal 243, correction processing can be performed even while an image is being displayed.

 [0058] In addition, a plurality of red light sensors 241C, green light sensors 251C, and blue light sensors 261C are arranged at different positions on the LCD panel 220. For this reason, the display device 100 can detect the luminance unevenness at the plurality of positions even when the luminance unevenness of the LED backlight 200 occurs at the plurality of positions. Therefore, it is possible to provide a highly convenient display device 100 that can appropriately adjust the display state of a video even when luminance unevenness occurs at a plurality of positions.

 [Second Embodiment]

 Next, a second embodiment according to the present invention will be described with reference to the drawings. In the present embodiment, a display device similar to that of the first embodiment provided with the display control device of the present invention will be described as an example. FIG. 5 is a block diagram showing a schematic configuration of the display device. FIG. 6 is a schematic diagram showing a schematic configuration of a red subpixel, a green subpixel, and a blue subpixel. Note that the same names and the same reference numerals are given to the same configurations as those of the first embodiment, and the description thereof is omitted. In addition, components having the same functions as the components of the first embodiment are given the same names and the differences in functions will be described in detail.

 [0060] [Configuration of display device]

In FIG. 5, reference numeral 300 denotes a display device. The white balance of the initial power of the LED backlight 200 and the color filters 381C, 391C, and 401C, which will be described later, and the white balance due to temperature drift and aging (hereinafter referred to as color misalignment). Video display based on Correct the condition as appropriate. The display device 300 includes a display unit 310 as a display means, an image signal processing unit 120, a display conversion adjustment circuit 320, an LED driver 140, a timing unit 150, a dimmer sensor 160, an A / D converter.咅, a memory 330, a processing 340340, and the like.

 Display unit 310 includes LED backlight 200, LCD unit 350, and the like. The LCD unit 350 includes an LCD panel 360 as a display area, a signal line driving circuit 270, a scanning line driving circuit 280, and the like.

 [0062] As shown in FIG. 2, the LCD panel 360 includes (NXM) pixels 370 arranged in a state where N pixels are arranged in the horizontal direction and M pixels are arranged in the vertical direction. RU The pixel 370 includes a red subpixel 380 as a first liquid crystal element, a green subpixel 390 as a second liquid crystal element, a blue subpixel 400 as a third liquid crystal element, and the like. ing.

 As shown in FIG. 6, the red subpixel 380 includes a first substrate portion 381, a second substrate portion 382, a liquid crystal 383, and the like. The first substrate portion 381 has a first glass substrate 381A. A first polarizing plate 381B is laminated on the surface of the first glass substrate 381A on the LED backlight 200 side (hereinafter referred to as one side). In addition, a color filter 381C serving as a red light transmitting means is laminated on the other surface of the first glass substrate 381A. Further, on the other surface of the color filter 381C, a red light sensor 381D as a first light intensity detection means, a TFT 381E, and a pixel electrode 381F are arranged side by side in the negative direction. The red light sensor 381D has a light receiving surface 381D1 and a mask 381D2, and the red light contained in the light of the LED backlight 200 after passing through the color filter 381C received by the light receiving surface 381D1, that is, the light of the LED backlight 200. The subpixel luminance Zri (i is the number of the pixel 370 having the red subpixel 380) corresponding to the light intensity is output to the AZD conversion unit 170 as an analog signal. A first alignment film 381G is stacked on the other side of the mask 381D2, TFT 381E, and pixel electrode 381F.

[0064] The second substrate unit 382 includes a second glass substrate 382A. A second polarizing plate 382B is laminated on the other surface of the second glass substrate 382A. Further, a counter electrode 382C is disposed on one surface of the second glass substrate 382A. Sarako, counter electrode A second alignment film 382D is stacked on one side of 382C.

The green subpixel 390 includes a first substrate portion 391, a second substrate portion 382, a liquid crystal 383, and the like. On the first glass substrate 381A of the first substrate portion 391, a color filter 391C serving as a green transmitting means for green is laminated. Further, the color filter 391C is provided with a green light sensor 391D as a second light intensity detection means, a TFT 391E, and a pixel electrode 391F. The green light sensor 391D has a light receiving surface 391D1 and a mask 391D2, and the subpixel brightness Zgi (i is the green subpixel 390) corresponding to the intensity of the green light contained in the light of the LED backlight 200 received by the light receiving surface 391D1. Output the number of pixel 370).

 The blue subpixel 400 includes a first substrate portion 401, a second substrate portion 382, a liquid crystal 383, and the like. On the first glass substrate 381A of the first substrate portion 401, a color filter 401C serving as a blue transmitting means for blue is laminated. Further, the color filter 401C is provided with a blue light sensor 401D as a third light intensity detecting means, a TFT 401E, and a pixel electrode 401F. The blue light sensor 401D has a light receiving surface 401D1 and a mask 401D2, and the subpixel brightness Zbi (i is a blue subpixel) corresponding to the intensity of blue light contained in the light of the LED backlight 200 received by the light receiving surface 401D1. The number of pixel 370 with 400).

 Then, the pixel 370 outputs light of a color obtained by combining red, green, and blue lights having predetermined intensities output from the red subpixel 380, the green subpixel 390, and the blue subpixel 400. The red light sensor 381D, the green light sensor 391D, and the blue light sensor 401D constitute the light state detection means of the present invention.

 Display conversion adjustment circuit 320 appropriately adjusts the video display state on display unit 310.

Specifically, the display conversion adjustment circuit 320 acquires the video signal processed by the video signal processing unit 120. Further, a color correction coefficient signal related to the color correction coefficients Hr, Hg, and Hb set based on the color shift of the LED backlight 200 and the color filters 381C, 391C, and 401C is acquired from the processing unit 340. The display conversion adjustment circuit 320 then displays an image in which the influence of the color deviation of the LED backlight 200 and the color filters 381C, 391C, 401C is minimized based on the following expressions 3, 4, and 5. Ideal color values for output Cri, Cgi, Cbi (i is Pixel number 370).

[0069] Cri = Eri X γ X Hr ... (3)

[0070] Cri: Red ideal color value of pixel i, 370

 Eri: Red color signal value of video signal corresponding to pixel 370 of i

 Hr: Red color correction coefficient

[0071] Cgi = Egi X γ X Hg ... (4)

 [0072] Cgi: i-th pixel 370 ideal green color value

 Egi: Green color signal value of the video signal corresponding to the i-th pixel 370

 Hg: Green color correction coefficient

[0073] Cbi = Ebi X γ X Hb ... (5)

 [0074] Cbi: Blue ideal color value of pixel i, 370

 Ebi: Blue color signal value of the video signal corresponding to the i-th pixel 370

 Hb: Blue color correction coefficient

[0075] Further, the display conversion adjustment circuit 320 outputs the light based on the ideal color values Cri, Cgi, and Cbi to the pixel 370, the red subpixel 380, the green subpixel 390, and the blue subpixel 400, respectively. Set the red output value Ro, green output value Go, and blue output value Bo corresponding to the color of the light to be generated. The red output value Ro, the green output value Go, and the blue output value Bo are used as color-corrected video signals, and together with the first specific signal, the second specific signal, the synchronization signal, and the clock signal, the specified timing That is, the image is output to the timing unit 150 at the video drawing timing on the LCD unit 350.

 [0076] The memory 330 stores various information necessary for video display processing so that they can be read out as appropriate. Further, the memory 330 stores, for example, color shift values Sr, Sg, and Sb, which will be described later, calculated by the processing unit 340 before product shipment so that they can be appropriately read as previous color shift values Tr, Tg, and Tb. Here, the previous color misregistration values Tr, Tg, and Tb are appropriately updated by the processing unit 340 when the display device 300 is used by the user.

The processing unit 340 includes, as various programs, a subpixel average calculation unit 341, a color correction coefficient setting unit 342, a BL control unit 193, and the like as shown in FIG. Here, the display conversion adjustment circuit 320, the subpixel average calculation means 341, and the color correction coefficient setting method In step 342, the display state adjusting means of the present invention is configured. In addition, the display state adjusting means, the red light sensor 381D, the green light sensor 391D, and the blue light sensor 401D described above constitute the display control device of the present invention.

 [0078] The sub-pixel average calculation means 341 includes an average luminance of red sub-pixel 380 of all pixels 370 (hereinafter referred to as sub-pixel average luminance) Ar, green sub-pixel 390, sub-pixel average luminance Ag, and blue sub-pixel 400 of Subpixel average brightness Ab is calculated as appropriate. Specifically, the subpixel average calculation means 341 acquires the subpixel luminances Zri, Zgi, Zbi of all the pixels 370 from the A / D conversion unit 170 and stores them in the memory 330. Then, the average value of the subpixel luminance Zri for all the pixels 370 is calculated as the subpixel average luminance Ar and stored in the memory 330. Further, the subpixel average calculation means 341 stores the average values of the subpixel luminances Zgi and Zbi for all the pixels 370 in the memory 330 as the subpixel average luminances Ag and Ab.

 The color correction coefficient setting unit 342 sets the color correction coefficients Hr, Hg, Hb based on the subpixel average luminances Ar, Ag, Ab calculated by the subpixel average calculation unit 341. Specifically, the color correction coefficient setting unit 342 acquires the subpixel average luminances Ar, Ag, Ab from the memory 330. Then, the subpixel average brightness Ar, Ag, Ab having the highest value is recognized as the maximum average brightness Am. Further, a value obtained by dividing the subpixel average luminance Ar by the maximum average luminance Am is calculated as a red color shift value Sr. In addition, the values obtained by dividing the subpixel average brightness Ag and Ab by the maximum average brightness Am are respectively calculated as the green color shift value Sg and the blue color shift value Sb. Further, the color correction coefficient setting means 342 determines whether or not the force exists in the previous color misregistration values Tr, Tg, Tb force memory 330 different from the color shift values Sr, Sg, Sb. If it is determined that the color misregistration values exist, the process of storing the color misregistration values Sr, S g, Sb as the previous color misregistration values Tr, Tg, Tb, that is, the update process of the previous color misregistration values Tr, Tg, Tb is performed. carry out.

Further, the color correction coefficient setting unit 342 obtains the previous color misregistration values Tr, Tg, Tb from the memory 330, and recognizes the smallest value among them as the reference color misregistration value Tm. In other words, the previous color shift values Tr, Tg, Tb of the color with the lowest subpixel average luminance Ar, Ag, Ab are recognized as the reference color shift value Tm. Then, the reference color misregistration value Tm is changed to the previous color misregistration value of red. The value divided by Tr is calculated and set as the red color correction coefficient Hr. In addition, values obtained by dividing the reference color misregistration value Tm by the previous green color misregistration value Tg and the previous blue color misregistration value Tb are set as the green color correction coefficient Hg and the blue color correction coefficient Hb, respectively. Here, the color correction coefficients Hr, Hg, Hb of the color corresponding to the reference color shift value Tm are 1. Also, the color correction coefficients Hr, Hg, and Hb for colors that do not correspond to the reference color shift value Tm are less than 1. That is, the color correction coefficients Hr, Hg, and Hb are not weakened in the color corresponding to the reference color shift value Tm of each pixel 370 with respect to the video signal, as shown in Equation 3, Equation 4, and Equation 5. By reducing the dark blue color that does not correspond to the reference color shift value Tm, this value is used to minimize the effects of color shift such as the LED backlight 200. Then, the color correction coefficient setting means 342 appropriately converts the color correction coefficients Hr, Hg, Hb into color correction coefficient signals and outputs them to the display conversion adjustment circuit 320.

 [0081] [Operation of display device]

 Next, as an operation of the display device 300, a video color misregistration correction process will be described with reference to the drawings. FIG. 7 is a flowchart showing video color misregistration correction processing.

 First, when the processing unit 340 recognizes an input operation for turning on the power of the display device 300, the display device 300 turns on the LED backlight 200 (step S201). Then, the red light sensor 381D, the green light sensor 391D, and the blue light sensor 401D of all the pixels 370 use the color filters 381C, 391C, and 401C from the LED backlight 200 to adjust the intensity of each color to the subpixel brightness Zri, Zgi, Zbi. (Step S202) and output as an analog signal to the A ZD converter 170. Thereafter, the display device 300 converts the analog signal into a digital signal by the AZD conversion unit 170 (step S203) and outputs the digital signal to the processing unit 340.

The processing unit 340 obtains the subpixel luminances Zri, Zgi, Zbi from the AZD conversion unit 170 by the subpixel average calculation means 341, and based on these, the subpixel average luminances Ar, Ag for all the pixels 370 are acquired. , Ab is calculated (step S204). Thereafter, the processing unit 340 calculates color shift values Sr, Sg, and Sb for red, green, and blue based on the subpixel average luminances Ar, Ag, and Ab in the color correction coefficient setting unit 342. (Step S205), it is determined whether or not the previous color misregistration values Tr, Tg, Tb different from the color misregistration values Sr, Sg, Sb exist (Step S206). If it is determined in step S206 that none of the previous color misregistration values Tr, Tg, Tb are the same as the color misregistration values Sr, Sg, Sb, The color correction coefficients Hr, Hg, Hb of each pixel 230 are set based on the rotational color shift values Tr, Tg, Tb (step S207), and the color correction coefficients Hr, Hg, Hb are used as color correction coefficient signals. Display Output to conversion adjustment circuit 320. On the other hand, if it is determined in step S206 that the previous color misregistration values Tr, Tg, Tb are different from the color misregistration values Sr, Sg, Sb, the previous color misregistration is different from the color misregistration values Sr, Sg, Sb. The values Tr, Tg, and Tb are updated (step S 208), and the process of step S 2 07 is performed.

 [0084] When the display conversion adjustment circuit 320 acquires the color correction coefficient signal and the video signal, the color correction coefficient Hr, Hg, Hb of the color correction coefficient signal and the color signal values Eri, Egi, Ebi of the video signal are obtained. Based on this, the respective ideal color values Cri, Cgi, Cbi of red, green, and blue of each pixel 370 are calculated (step S209). Thereafter, the display conversion adjustment circuit 320 generates a color-corrected video signal based on these ideal color values Cri, Cgi, and Cbi (step S210), and outputs it to the timing unit 150. Thereafter, the timing unit 150 outputs a color correction video signal or the like to the signal line driving circuit 270 and the scanning line driving circuit 280 (step S211). When the signal line driving circuit 270 and the scanning line driving circuit 280 obtain the color correction video signal, the light line corresponding to the red output value Ro, the green output value Go, and the blue output value Bo of the color correction video signal is obtained. That is, the color correction image signal is written to output light corresponding to the ideal color values Cri, Cgi, and Cbi to each pixel 370 (step S212), and the image color misregistration correction process is terminated.

 [0085] [Effects of Second Embodiment]

As described above, in the second embodiment, the red light sensor 381D for detecting the color of the light from the LED backlight 200, the green light sensor 391D, and the blue light sensor are displayed on the LCD panel 360 of the display device 300. 401D. Then, the color correction coefficient setting means 342 corresponds to the color shift of the LED backlight 200 based on the sub-pixel brightness Zri, Zgi, Zbi detected by the red light sensor 381D, the green light sensor 391D, and the blue light sensor 401D. The color misregistration values Sr, Sg, Sb are calculated and stored as previous color misregistration values Tr, Tg, Tb as appropriate. Further, the display conversion adjustment circuit 320 is based on the color signal values Eri, Egi, Ebi related to the color of the video in the video signal and the color correction coefficients Hr, Hg, Hb based on the previous color shift values Tr, Tg, Tb. The ideal color values Cr i, Cgi, Cbi are calculated, and light of the color based on the ideal color values Cri, Cgi, Cbi is output to the pixel 370. Output a color-corrected video signal. Therefore, for example, when the color of light irradiating a predetermined position on the LCD panel 360 changes from the initial state due to, for example, deterioration of the LED backlight 200, the display device 300 changes the red light disposed at the predetermined position. Based on the detection status of light from LED backlight 200 in light sensor 3 81D, green light sensor 391D, and blue light sensor 401D, the average color shift for all pixels 370 is calculated, and the color shift of LED knock light 200 is calculated. It can be corrected to an average suppressed state. Therefore, the display device 300 can appropriately adjust the display state of the video.

 [0086] In addition, the display device 300 performs processing for adjusting the transmission state of light from the LED backlight 200 in the LCD panel 360 based on the color-corrected video signal obtained by correcting the video signal. This is implemented as a process for correcting the state. For this reason, the display state of the image can be appropriately corrected with a simple configuration that only adjusts the transmission state of each pixel 370 of the LCD panel 360. Further, even when a light bulb backlight is used, which is difficult to adjust compared to the LED backlight 200, the display state of the image can be easily adjusted.

 [0087] Further, the color correction coefficient setting means 342 is included in the previous color shift values Tr, Tg, Tb of the color having the lowest subpixel average luminances Ar, Ag, Ab, that is, the light from the LED backlight 200. The previous color misregistration values Tr, Tg, and Tb corresponding to the light of the weakest color among red, green, and blue light are recognized as the reference color misregistration value Tm. The effect of the color shift of the LED backlight 200 is minimized by weakening the color that does not correspond to the reference color shift value Tm without changing the color corresponding to the reference color shift value Tm for the video signal. The color correction coefficients Hr, Hg, and Hb for suppression are output to the display conversion adjustment circuit 320. For this reason, the display device 300 can more easily adjust the display state of the video simply by adjusting the transmission state of each pixel 370 to weaken a specific color.

[0088] Then, the red light sensor 381D, the green light sensor 391D, and the blue light sensor 401D are connected to the color backlights 381C, 39 1C, and 401C of the red subpixel 380, the green subpixel 390, and the blue subpixel 400. It is arranged on the opposite side. That is, for example, the red light sensor 381D detects the intensity of red light from the LED backlight 200 that has passed through the color filter 381C. For this reason, the red light sensor 381D, the green light sensor 391D, and the blue light sensor 401D have a color filter in addition to the color deviation of the LED backlight 200. Intensities of red, green, and blue light can be detected in a state that reflects the color shift due to aging of Ruta 381C, 391C, and 401C. Accordingly, it is possible to provide the display device 300 that is more convenient than the image display state that can be corrected to a state in which the color shift due to the aging of the color filters 381C, 391C, and 401C is minimized. Further, as the red light sensor 381D, the green light sensor 39 ID, and the blue light sensor 401D, sensors capable of detecting the intensity of white light can be applied. Therefore, the same type of sensors can be arranged as the red light sensor 381D, the green light sensor 391D, and the blue light sensor 401D, and different types of sensors that can detect the intensities of only red, green, and blue light are arranged. Compared with the configuration to be provided, the processing for arranging the red light sensor 381D, the green light sensor 391D, and the blue light sensor 401D can be facilitated.

 [0089] Further, the red light sensor 381D, the green light sensor 391D, and the blue light sensor 401D are disposed closer to the LED backlight 200 than the liquid crystal 383 in the red subpixel 380, the green subpixel 390, and the blue subpixel 400. . Therefore, the red light sensor 381D, the green light sensor 391D, and the blue light sensor 401D can detect the intensity of light of each color without going through the liquid crystal 383, and correspond to the color deviation of the LED backlight 200 and the color filters 381C, 391C, 401C. The light intensity of each color can be detected more accurately. Therefore, the display device 300 can adjust the display state of the video more appropriately. Furthermore, since the intensity of light of each color can be detected without going through the liquid crystal 383, correction processing can be performed even during video display.

 [0090] In addition, a plurality of red light sensors 381D, green light sensors 391D, and blue light sensors 401D are arranged at different positions on the LCD panel 360. For this reason, the display device 300 can detect color misregistration at the plurality of positions even when the LED backlight 200 and the color filters 381C, 391C, and 401C are displaced at a plurality of positions. Therefore, even if color misregistration occurs at a plurality of positions, the convenience of being able to adjust the display state of the video on average is high, and the display device 300 can be provided.

 [Modification of Embodiment]

 The present invention is not limited to the above-described embodiment, but includes the following modifications as long as the object of the present invention can be achieved.

That is, for example, the display device 300 according to the second embodiment includes, for example, a red subpixel 500 as shown in FIG. 8 and a green subpixel having the same configuration as the red subpixel 500. For example, the following processing may be performed by applying the blue sub-pixel and the blue sub-pixel.

 A red subpixel 500 shown in FIG. 8 includes a first substrate portion 501, a second substrate portion 502, a liquid crystal 503, and the like. A first polarizing plate 501B is laminated on one surface of the first glass substrate 501A of the first substrate portion 501. Further, a red color filter 501C, a counter electrode 501D, and a first alignment film 501E are sequentially stacked on the other surface of the first glass substrate 501A. On the other surface of the second glass substrate 502A of the second substrate portion 502, a second polarizing plate 502B is laminated. In addition, on one surface of the second glass substrate 502A, a red light sensor 502C having a light receiving surface 502C1 and a mask 502C2, a TFT502D, and a pixel electrode 502E are arranged side by side in the negative direction. . Further, a second alignment film 502F is laminated on one side of these. Here, the color filter 501C may be disposed between the second alignment film 502F, the red light sensor 502C, the TFT 502D, and the pixel electrode 502E. Then, the subpixel average calculation means 341 controls the display conversion adjustment circuit 320 when the power is turned on, for example, and causes the LCD panel 360 to display a white plain image (hereinafter referred to as a white image). Then, the subpixel average luminances Ar, Ag, Ab are calculated based on the subpixel luminances Zri, Zgi, Zbi through the color filter 5001C when the white image is displayed. Thereafter, the processing of step S205 to step S212 as shown in FIG. 7 may be performed. Even with such a configuration, the display state of the image at the position where the red light sensor 502C and the like is provided is minimized as in the configuration of the second embodiment, with minimal color shift of the LED backlight 200 and the color filter 501C. The image display state can be adjusted appropriately. In the following, the configuration using the red sub-pixel 500 shown in FIG. 8 will be referred to as a modified configuration as appropriate. Further, when the first embodiment, the second embodiment, and the modified embodiments are collectively expressed, they will be appropriately referred to as the respective embodiments.

[0094] Further, in a modification, the LCD panel 360 is not a white image but a solid image of another color such as gray (hereinafter referred to as a plain image) or a predetermined specific image (hereinafter referred to as a solid image). (Referred to as a specific image). Further, the previous color misregistration values Tr, Tg, and Tb corresponding to the plain image and the specific image calculated before product shipment are stored in the memory. And for example For example, the color correction coefficients Hr, Hg, and Hb may be set based on the differences between the color shift values Sr, Sg, and Sb and the previous color shift values Tr, Tg, and Tb. Even with such a configuration, the display state of the video can be appropriately adjusted, as in the modified embodiment.

 In each embodiment, the force exemplified for the configuration for correcting the luminance signal value Eai and the color signal values Eri, Egi, Ebi by adjusting the transmission state of the pixels 230, 370 is not limited to this. The LED backlight 200 may be configured to control the light emission state of the red LED, green LED, and blue LED to correct the image so that the influence of uneven brightness and color shift is minimized. Here, the red LED, the green LED, and the blue LED function as the light emitting means of the present invention. Specifically, the LED driver 140 obtains, for example, a luminance correction coefficient Hi, and corrects the red BL light amount, green BL light amount, and blue BL light amount of the LED backlight 200 based on the luminance correction coefficient Hi. Then, output the irradiation light setting signal for the corrected red BL light amount, green BL light amount, and blue BL light amount, and the light emission status of the red LED, green LED, and blue LED of the LED backlight 200 is affected by uneven brightness. A configuration in which correction is made to a minimum state may be adopted. Also, it is only necessary to adjust the light emission status of the red LED, green LED, and blue LED of the LED backlight 200. For example, a position corresponding to a predetermined pixel 230, 370 between the LED backlight 200 and the LCD panel 220, 360. The image can be corrected more easily than a configuration in which a means capable of appropriately shielding light (hereinafter referred to as pixel-corresponding partial light shielding means) is provided and adjusted. As described above, a pixel-corresponding partial light shielding unit may be provided between the LED backlight 200 and the LCD panels 220 and 360 to correct the image.

 [0096] Further, in each embodiment, by controlling both the transmission state of the pixels 230 and 370 and the light emission state of the LED backlight 200, the image is corrected so as to minimize the influence of luminance unevenness and color shift. It is good also as a structure. With such a configuration, it is possible to appropriately correct an image according to more situations as compared to the configuration in which only one of the above-described transmission state and light emission state is controlled.

[0097] In the first embodiment, a function may be provided in which an image is corrected so as to minimize the influence of color misregistration. Specifically, the processing unit 190 is provided with sub-pixel average calculation means 341 and color coefficient setting means 342. Further, the display conversion adjustment circuit 130 may be provided with a function for calculating the ideal color values Cri, Cgi, Cbi. like this With this configuration, it is possible to provide a highly convenient display device 100 that can correct an image so that the influence of the color shift of the LED backlight 200 is minimized in addition to the uneven brightness of the LED backlight 200.

 [0098] In addition, in the second embodiment or the modification, a configuration may be provided in which a function for correcting an image is provided in a state in which the influence of luminance unevenness is minimized. Specifically, the processing unit 340 is provided with pixel average calculation means 191 and luminance coefficient setting means 192. Further, the display conversion adjustment circuit 320 may be provided with a function for calculating the ideal luminance value Rki. With this configuration, in addition to the color shift of the LED backlight 200 and the color filters 381C, 391C, and 401C, the image can be corrected to a state that minimizes the effects of uneven brightness of the LED backlight 200. A display device with high performance can be provided.

[0099] Alternatively, in the first embodiment, the luminance variation value Ki for each pixel is calculated and the luminance correction is performed for each pixel. This is the red, green, and blue color for each subpixel. A configuration may be provided in which the luminance variation values Kri, Kgi, and Kbi are calculated, and a function for correcting the image is provided for each subpixel so as to minimize the influence of the luminance unevenness of each color. Specifically, the processing unit 190 uses the subpixel luminance values Yri, Ygi, and Ybi for each of the red, green, and blue colors obtained from the AZD conversion unit 170 to calculate the subpixel average luminance for each color of red, green, and blue. Degrees Arp, Agp, Abp are calculated. After that, the processing unit 190 calculates a value obtained by subtracting the red sub-pixel luminance Yrp from the red sub-pixel luminance Yri and the red sub-pixel average luminance Arp as the red luminance variation value Kri by the luminance correction coefficient setting means 192, and thereby the green, blue The same method is used to calculate green brightness variation value Kgi and blue brightness variation value Kbi. Then, it is stored as appropriate as the previous red, green, and blue color luminance variation values Tri, Tgi, and Tbi. The display conversion adjustment circuit 130 determines the luminance signal values Erai, Egai, Ebai related to the red, green, and blue color luminances of the video signal and the previous red, green, and blue color luminance variation values Tri, Tgi, Tbi. Based on the red, green, and blue color luminance correction coefficients based on Hri, Hgi, and Hri, the red, green, and blue ideal luminance values Rkri, Rkgi, and Rkbi are calculated, and the red, green, and blue ideal luminance values are calculated. Outputs luminance-corrected video signals of red, green, and blue to output light based on the values Rkri, Rkgi, and Rkbi to the red subpixel 240, green subpixel 250, and blue subpixel 260. For this reason, the display device 100 is partially brightened or darkened due to deterioration of the LED backlight 200 or the like. Even in the case where the color is uneven, that is, when the color unevenness occurs, the display state of the image can be corrected so as to minimize the influence of the color unevenness.

 [0100] In the first embodiment, the brightness of the pixel 230 corresponding to the brightest part of the LCD panel 220 (hereinafter referred to as the maximum brightness pixel 230) is not lowered, and the brightness of the pixels other than the maximum brightness pixel 230 is reduced. By increasing the brightness of the pixel 230, the image may be corrected so that the influence of the uneven brightness of the LED backlight 200 is minimized. Here, as a configuration to increase the luminance of the pixels 230 other than the maximum luminance pixel 230, for example, the LED backlight 200 irradiates the LCD panel 220 with light having a luminance lower than the maximum luminance in the initial state. A configuration in which the luminance of the portion corresponding to the pixel 230 other than the maximum luminance pixel 230 is increased when it occurs can be exemplified, but is not limited thereto. Even with such a configuration, the display device 100 can correct an image so as to minimize the influence of the luminance unevenness of the LED backlight 200.

 [0101] Further, in the second embodiment or modification, the LCD panel 360 does not weaken the light of the strongest color (hereinafter referred to as the strongest color) and strengthens colors other than the strongest color. Therefore, the image may be corrected so as to minimize the influence of the color shift of the LED backlight 200. Here, as a configuration for increasing the intensity of colors other than the strongest color, for example, the red LED, green LED, and blue LED of the LED knocklight 200 emit light at a lower intensity than the maximum intensity in the initial state, and color misregistration occurs. A configuration in which light is emitted in a state where the intensity of an LED of a color other than the strongest color is increased when it occurs can be exemplified, but is not limited thereto. Even with such a configuration, the display device 300 can correct an image so that the influence of the color shift of the LED backlight 200 and the color filters 381C, 391C, and 401C is minimized.

[0102] Furthermore, in the first embodiment, the red light sensor 241C, the green light sensor 251C, and the blue light sensor 261C may be provided on the opposite side of the LED backlight 200 with respect to the liquid crystal 243. That is, for example, the red subpixel 240, the green subpixel 250, and the blue subpixel 260 are configured in the same manner as the red subpixel 500 in the modified form. The luminance correction coefficient setting means 192 may calculate the luminance correction coefficient Hi based on the subpixel luminance when the white image is displayed on the LCD panel 220. Even in such a configuration, the display device 100 displays the image in a state in which the luminance unevenness of the LED backlight 200 is minimized. Can be corrected.

 [0103] In each embodiment, the display device 100, 300 may be configured to perform video correction processing when it recognizes a setting input for performing video correction processing by the input unit. Specifically, in the first embodiment, the processing after step S102, in the second embodiment, the processing after step S202, in the modified embodiment, the processing for displaying a white image, the video correction processing It is also possible to adopt a configuration that is implemented when a setting input for performing the above is recognized. With such a configuration, for example, it is possible to provide the display devices 100 and 300 with higher convenience that can correct the video according to the user's will even during video output.

 In each embodiment, the red light sensors 241C, 381C, 502C, the green light sensors 251C, 391C, and the blue light sensors 261C, 401C may be arranged only at predetermined positions on the LCD panels 220, 360. . Even with such a configuration, for example, the influence of uneven brightness and color shift of the LED backlight 200 generated at the position where the red light sensors 241C, 381C, 502C, etc. are disposed on the LCD panels 220, 360 is minimized. The image can be corrected to the state. Therefore, the display devices 100 and 300 can appropriately adjust the display state of the image as compared with the configuration in which the display state of the image is adjusted only by the conventional backlight brightness adjustment.

 [0105] Further, in each embodiment, when the LED backlight 200 is turned on, the brightness is calculated based on the previous luminance variation value Ti and the previous color shift values Tr, Tg, Tb stored in the memories 180, 330. The correction coefficient Hi and the color correction coefficients Hr, Hg, and Hb may be calculated. Here, the luminance correction coefficient setting means 192 and the color correction coefficient setting means 342 function as the storage control means of the present invention. Further, the memories 180 and 330 function as storage means of the present invention. Further, the previous luminance variation value Ti and the previous color shift values Tr, Tg, Tb function as the light state information of the present invention. With this configuration, for example, if the brightness unevenness or color shift of the backlight 200 has not occurred since the previous use, the previous brightness variation value Ti and the previous color shift value Tr, Tg, Tb are recalculated. It is possible to appropriately adjust the display state of the video without having to do it. Therefore, the processing load of the processing units 190 and 340 can be reduced as compared with the configuration in which the luminance correction coefficient Hi and the color correction coefficients Hr, Hg, and Hb are calculated each time the LED backlight 200 is turned on as in each embodiment. .

[0106] Further, the configuration of the first embodiment may be applied to a display device that displays black and white video. Even in such a configuration, the influence of the uneven brightness of the knocklight is minimized. A highly convenient display device capable of correcting the display state of black and white video can be provided.

 [0107] The present invention is not limited to the display devices 100 and 300 including the transmissive LCD panels 220 and 360, and includes a so-called reflective LCD panel that reflects incident light and outputs an image. It may be applied to a display device. That is, for example, the display control apparatus of the first embodiment is provided with a mirror as an irradiation unit (not shown) at a position corresponding to the LED backlight 200 in FIG. 3, for example, and the second polarizing plate 242B side force is not shown. You may apply to the structure which irradiates light to a LCD panel with a light source or external light. In such a configuration, the pixel average luminance calculation means 191 controls the state of the liquid crystal so that, for example, a white image, a plain image, or a specific image is displayed on the LCD panel, and the light reflected by the mirror is controlled. Get sub-pixel brightness Yri, Ygi, Ybi corresponding to intensity. The display conversion adjustment circuit 130 or the like may be configured to generate a luminance correction video signal based on the subpixel luminances Yri, Ygi, Ybi. Here, in the case of a reflective LCD panel, since light passes through the liquid crystal 243 twice, a luminance correction video signal is generated by reflecting that fact. With such a configuration, even in a display device having a reflective LCD panel, the display state can be adjusted so as to minimize the uneven brightness of the light reflected by the mirror. In a display device having a reflective LCD panel, the display control device of the second embodiment, that is, a configuration that adjusts the display state to a state that minimizes the color shift of the light reflected by the mirror is applied. May be. The position where the sensor is installed is not limited to the configuration shown in FIG. 3, and the light reflected at the position shown in FIGS. 6 and 8 and the color filter color shift and luminance unevenness are displayed to a minimum. It is good also as a structure which adjusts a state.

 [0108] The display area of the present invention is not limited to the LCD panels 220 and 360, and any configuration for displaying an image by adjusting the transmission state or reflection state of incident light may be applied. Further, the present invention is not limited to a vehicle-mounted display device, and may be applied to a portable display device, a display device installed in a home or factory, or a display device installed outdoors such as a stadium. Furthermore, for example, it may be applied to a display unit that displays various information such as the playback state and recording state in a video / music recording / playback device.

[0109] The ability to build each function described above as a program may be configured by hardware such as a circuit board or an element such as a single integrated circuit (IC). Any form can be used. By adopting a configuration that can read the program and the recording medium power separately, it is easy to handle and can be used easily.

 [0110] In addition, the specific structure and procedure for carrying out the present invention can be appropriately changed to other structures and the like as long as the object of the present invention can be achieved.

 [Effects of Embodiment]

 As described above, in the above embodiment, the display device 100 uses the display conversion adjustment circuit 130 to detect the LEDs detected by the red light sensor 241C, the green light sensor 251C, and the blue light sensor 261C disposed on the LCD panel 220. Based on the state of light from the backlight 200, the display state of the image at the position corresponding to the red light sensor 241C, the green light sensor 251C, and the blue light sensor 261C of the LCD panel 220 is corrected. For this reason, when the state of light irradiating a predetermined position on the LCD panel 220 changes due to, for example, aging of the LED backlight 200, the display device 100 changes the red light disposed at the predetermined position. Based on the detection state of light from the LED backlight 200 in the sensor 241C, the green light sensor 251C, and the blue light sensor 261C, it is possible to correct the display state of the image only at the position where the light state has changed. Therefore, the display device 100 can appropriately adjust the display state of the video.

 Industrial applicability

The present invention can be used for a display control device that adjusts the display state of an image on a display means, a display device, a display control method, a program thereof, and a recording medium on which the program is recorded.

Claims

The scope of the claims  [1] Provided in a display means having a display area for displaying an image and an irradiating unit for irradiating light to the display area, and transmitting or reflecting light incident on the display area from the irradiating unit A display control device for adjusting the display state of the image in the display area by adjusting  A light state detection unit that is disposed at a predetermined position in the display area and detects a state of light from the irradiation unit incident on the predetermined position; The light from the irradiation unit at the predetermined position detected by the light state detection means

Display state adjusting means for controlling the display state of the image at the predetermined position;  A display control apparatus comprising:  [2] The display control device according to claim 1,  The display state adjusting unit performs control for adjusting the light transmission state or the reflection state at the predetermined position of the display region as control for adjusting the display state of the image at the predetermined position.  A display control device characterized by that. [3] The display control device according to claim 2,  The display area includes a plurality of pixels that output predetermined light by adjusting a transmission state or a reflection state of incident light,  The light state detection means is disposed in the pixel at the predetermined position,  The display state adjustment unit performs control to adjust a transmission state or a reflection state of the light in the pixel at the predetermined position.  A display control device characterized by that. [4] The display control device according to any one of claims 1 and 3, wherein  The display state adjusting unit performs control for adjusting an irradiation state of light applied to the predetermined position in the irradiation unit as control for adjusting a display state of an image at the predetermined position. A display control device characterized by that. [5] The display control device according to claim 4,  The irradiation unit includes a plurality of light emitting means for emitting light in a predetermined state,  The display state adjusting unit adjusts an irradiation state of the light that irradiates the predetermined position in the irradiation unit with a control for adjusting a light emitting state of the light emitting unit provided at a position corresponding to the predetermined position. Implement as control  A display control device characterized by that. [6] The display control device according to any one of claims 1 and 5, wherein:  The light state detection means detects the luminance of light from the irradiation unit as the light state, and the display state adjustment means is based on the luminance of light from the irradiation unit at the predetermined position. The control for adjusting the luminance of the image at the predetermined position is performed as the control for adjusting the display state of the image at the predetermined position.  A display control device characterized by that. [7] The display control device according to claim 6,  The display area includes a plurality of pixels that adjust a transmission state of incident light and output light having a predetermined luminance,  The irradiation unit irradiates the display area with light having substantially the same luminance,  The light state detection means is disposed on the pixels at a plurality of different predetermined positions in the display area,  The display state adjustment unit is configured to adjust the luminance of light output from the pixels disposed at the predetermined position other than the predetermined position, the luminance of light from the irradiation unit being the lowest among the plurality of predetermined positions. The control for lowering is performed as control for adjusting the brightness of the image at the predetermined position.  A display control device characterized by that. [8] The display control device according to any one of claims 1 and 7, wherein The light state detection means detects the color of light from the irradiation unit as the light state, and the display state adjustment means is based on the color of light from the irradiation unit at the predetermined position! /, Control for adjusting the color of the image at the predetermined position to the predetermined position. This is implemented as a control to adjust the display state of the image  A display control device characterized by that.  [9] The display control device according to claim 8,  The display area includes a plurality of pixels that adjust a transmission state of incident light and output light of a predetermined color,  The irradiation unit irradiates the display area with substantially white light,  The light state detection means is disposed in the pixels at a plurality of different predetermined positions in the display area, and includes red light intensity, green light intensity, and substantially white light from the irradiation unit, and , Detecting the intensity of blue light as the color of the light,  The display state adjustment unit performs control for reducing the intensity of light of a color other than the color with the weakest intensity detected by the light state detection unit among the colors included in the light output by the pixel. As control to adjust the color of the image at the position of  A display control device characterized by that. [10] The display control device according to claim 7,  The pixel includes a liquid crystal that adjusts a transmission state of incident light,  The light state detection means is disposed on the light incident side of the liquid crystal.  A display control device characterized by that. [11] The display control device according to claim 9,  The pixel includes a first liquid crystal element having a liquid crystal that adjusts a transmission state of incident light, a red liquid crystal element that is disposed on an incident side or an emission side of the light of the liquid crystal, and transmits red light. A liquid crystal and a second liquid crystal element disposed on an incident side or an emission side of the light of the liquid crystal and having a green transmitting means that transmits green light; and an incident side or an emission side of the light of the liquid crystal and the liquid crystal And a third liquid crystal element having a blue transmitting means that transmits blue light. The light state detection means is a first light intensity that is disposed on the light emission side of the red transmission means in the pixel and detects the intensity of the red light from the irradiation unit that transmits the red transmission means. The green light from the irradiating unit disposed on the light emission side of the green transmitting means in the pixel and passing through the green transmitting means in the pixel A second light intensity detecting means for detecting the intensity of the blue light; and an intensity of the blue light from the irradiating section disposed on the light emitting side of the blue transmitting means in the pixel and transmitted through the blue transmitting means. A third light intensity detecting means for detecting,  A display control device characterized by that. [12] The display control device according to claim 11,  The red transmitting means, the green transmitting means, and the blue transmitting means are disposed on the light incident side of the liquid crystal,  The first light intensity detecting means is disposed between the red transmitting means and the liquid crystal;  The second light intensity detecting means is disposed between the green transmitting means and the liquid crystal;  The third light intensity detecting means is disposed between the blue transmitting means and the liquid crystal.  A display control device characterized by that. [13] The display control device according to claim 11,  The first light intensity detection means, the second light intensity detection means, and the third light intensity detection means are disposed on the light emission side of the liquid crystal,  The light state adjusting means adjusts the transmission state of the liquid crystal to a state of outputting substantially white light, and reduces the intensity of light of a color other than the light color with the weakest intensity detected by the light state detecting means. Implement control to  A display control device characterized by that. [14] The display control device according to any one of claims 1 to 13,  The light state adjusting unit performs control for adjusting a display state of the image at the predetermined position based on an input operation.  A display control device characterized by that. [15] The display control device according to any one of claims 1 to 6 and claim 6, The light state detection means is disposed at a plurality of different predetermined positions in the display area. A display control device characterized by that.  [16] The display control device according to any one of claims 1 to 15,  Comprising storage control means for storing in the storage means light state information relating to the state of light from the irradiation unit detected by the light state detection means;  The display state adjusting unit controls the display state of the image based on the light state of the light state information stored in the storage unit.  A display control device characterized by that. [17] Display means comprising a display area for displaying an image and an irradiation unit for irradiating light to the display area;  The display control device according to claim 1, and the display control device according to claim 16,  A display device comprising: [18] A transmission state of light that is applied to a display unit including a display area for displaying an image and an irradiation unit for irradiating light on the display area, and is incident on the display area from the irradiation unit Or a display control method for adjusting a display state of an image in the display area by adjusting a reflection state,  Detecting the light state of the irradiation unit force incident on a predetermined position in the display area,  Based on the detected state of light from the irradiation unit at the predetermined position, control is performed to adjust the display state of the image at the predetermined position.  A display control method characterized by the above. [19] Let the computing means function as the display control device according to any one of claims 1 to 16.  A display control program characterized by that. [20] A calculation means executes the display control method according to claim 18.  A display control program characterized by that. [21] The display control program according to claim 19 or claim 20 is recorded so as to be readable by the arithmetic means.  The recording medium which recorded the display control program characterized by the above-mentioned.