WO2012124007A1 - Dispositif d'affichage et procédé d'affichage - Google Patents

Dispositif d'affichage et procédé d'affichage Download PDF

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Publication number
WO2012124007A1
WO2012124007A1 PCT/JP2011/006928 JP2011006928W WO2012124007A1 WO 2012124007 A1 WO2012124007 A1 WO 2012124007A1 JP 2011006928 W JP2011006928 W JP 2011006928W WO 2012124007 A1 WO2012124007 A1 WO 2012124007A1
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Prior art keywords
signal
output control
control signal
green
blue
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PCT/JP2011/006928
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English (en)
Japanese (ja)
Inventor
芳規 和泉
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パナソニック株式会社
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2003—Display of colours
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0452—Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/06—Colour space transformation

Definitions

  • the present invention relates to a display device including a display unit such as a liquid crystal display or a plasma display panel, and a display method.
  • a display device including a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel, a four-color display region using a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel as a video display region
  • a display device that sets a three-color display region using only a red subpixel, a green subpixel, and a blue subpixel has been proposed (see, for example, Patent Document 1).
  • four-color conversion is not performed in the three-color display region using only the red subpixel, the green subpixel, and the blue subpixel, or the control signal for the white subpixel is simply set to zero. It is not used for display.
  • the difference in signal processing between the three-color display area and the four-color display area is only that the control signal for the white subpixel is set to zero in the three-color display area. It has become. Therefore, the luminance of the image displayed by the four-color display unit including the red sub-pixel, the green sub-pixel, the blue sub-pixel, and the white sub-pixel, and the four-color display unit includes the red sub-pixel, the green sub-pixel, and the blue sub-pixel. It is impossible to visually recognize a relative luminance difference from the luminance displayed when it is assumed that only the sub-pixel is included and the white sub-pixel is not included.
  • the present invention solves the above-described problem.
  • the luminance of an image displayed by a four-color display unit, and the four-color display unit includes only a red subpixel, a green subpixel, and a blue subpixel. It is an object of the present invention to provide a display device and a display method capable of visually recognizing a relative luminance difference from the luminance displayed when it is assumed that no pixel is included.
  • a display device is input with a four-color display unit having a plurality of pixels including a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel that display red, green, blue, and white, respectively.
  • a region setting unit for setting a second display region for displaying an image with a second luminance corresponding to the first luminance
  • the signal processing unit is configured to correspond to the first display region.
  • Signal levels of the red output control signal, the green output control signal, the blue output control signal, and the white output control signal of the sub-pixel, and the red output control signal of the sub-pixel corresponding to the second display area, At least one of the green output control signal, the blue output control signal, and the white output control signal is attenuated from a signal level corresponding to the video signal.
  • a display method includes a four-color display unit having a plurality of pixels including a red subpixel, a green subpixel, a blue subpixel, and a white subpixel that display red, green, blue, and white, respectively.
  • a red output control signal for controlling display luminance of each of the red sub-pixel, the green sub-pixel, the blue sub-pixel, and the white sub-pixel from the input video signal for each pixel.
  • the signal processing step includes signal levels of the red output control signal, the green output control signal, the blue output control signal, and the white output control signal of each of the sub-pixels corresponding to the first display area, and the second Corresponding to the video signal at least one of the red output control signal, the green output control signal, the blue output control signal, and the white output control signal of each sub-pixel corresponding to the display area. Attenuate from signal level.
  • FIG. 1 is a block diagram showing the configuration of the display device according to the first embodiment of the present invention.
  • the display device includes a display unit 11, a mode setting unit 12, a region setting unit 13, and a signal processing unit 14.
  • the signal processing unit 14 includes a storage unit 15, a conversion unit 16, and a correction unit 17.
  • the display unit 11 includes pixels arranged in a matrix. Each pixel has a red sub-pixel 21 that displays red, a green sub-pixel 22 that displays green, a blue sub-pixel 23 that displays blue, and a white sub-pixel 24 that displays white. That is, the display unit 11 constitutes a four-color display unit. As the display unit 11, various displays such as a liquid crystal display, a plasma display panel, and an organic EL (electroluminescence) display can be adopted.
  • the mode setting unit 12 sets an operation mode.
  • a mode for demonstrating the comparison with the brightness of the image displayed when only the sub-pixel is included and the white sub-pixel is not included (hereinafter referred to as “demo mode”), and a normal mode that is not the demo mode Set.
  • the mode setting unit 12 is composed of, for example, operation keys that can be operated by a specific operator, and outputs a control signal S1 having a level corresponding to the setting mode to the conversion unit 16 and the correction unit 17. In this embodiment, for example, the mode setting unit 12 outputs a high-level control signal S1 when the demo mode is set, and outputs a low-level control signal S1 when the normal mode is set.
  • the area setting unit 13 sets a first display area 111 and a second display area 112 as display areas of the display unit 11. For example, the area setting unit 13 sets the first and second display areas 111 and 112 based on the vertical synchronization signal and the horizontal synchronization signal included in the input video signal.
  • the region setting unit 13 outputs a control signal S2 indicating the first and second display regions 111 and 112 to the conversion unit 16 and the correction unit 17.
  • the region setting unit 13 outputs the control signal S2 to the conversion unit 16 and the correction unit 17 for each pixel.
  • the region setting unit 13 outputs a high-level control signal S2 to the pixels corresponding to the first display region 111, and outputs a low-level control signal S2 to the pixels corresponding to the second display region 112. To do.
  • the red sub-pixel 21, the green sub-pixel 22, the blue sub-pixel 23, and the white sub-pixel 24 are integrally represented, they are simply referred to as pixels.
  • the signal processing unit 14 displays the luminance displayed when it is assumed that each pixel of the display unit 11 includes only the red subpixel, the green subpixel, and the blue subpixel and does not include the white subpixel.
  • the video is displayed on the first display area 111 with the corresponding first luminance, and the video is displayed on the second display area 112 with the second luminance corresponding to the first luminance.
  • the display unit when it is assumed that each pixel of the display unit 11 includes only the red subpixel, the green subpixel, and the blue subpixel and does not include the white subpixel is referred to as a “virtual display unit”.
  • the storage unit 15 of the signal processing unit 14 includes, for example, a hard disk or a flash memory, and stores a luminance ratio k and a luminance reduction rate p1 obtained in advance.
  • the luminance ratio k is obtained, for example, as follows. That is, first, all the white sub-pixels 24 of the display unit 11 are displayed with the maximum light amount, and the luminance Wcd is measured. Subsequently, all the red sub-pixels 21, green sub-pixels 22, and blue sub-pixels 23 of the display unit 11 are displayed with the maximum light amount, and the luminance (Rcd + Gcd + Bcd) is measured.
  • the luminance reduction rate p1 represents a reduction rate of the size of each sub-pixel in the display unit 11 with respect to the size of each sub-pixel in the virtual display unit.
  • the red subpixel of the display unit 11 21 the sizes of the green sub-pixel 22 and the blue sub-pixel 23 are reduced by the amount of the white sub-pixel 24. Therefore, the maximum luminance that can be displayed by the red subpixel 21, the green subpixel 22, and the blue subpixel 23 is decreased by the size reduction.
  • the red subpixel 21, the green subpixel 22, the blue subpixel 23, and the white subpixel 24 in the display unit 11 are the same size.
  • the conversion unit 16 converts the input video signals Ri, Gi, Bi using, for example, a known method using the luminance ratio k, and the red subpixel 21, the green subpixel 22, the blue subpixel 23, and the white subpixel 24.
  • a red color conversion signal R2, a green color conversion signal G2, a blue color conversion signal B2, and a white color conversion signal W2 used for display control are generated.
  • FIG. 2 is a diagram illustrating a signal generated by the conversion unit 16.
  • Section (A) in FIG. 2 shows an example of the input video signals Ri, Gi, Bi.
  • Section (B) of FIG. 2 shows an example of the increase signals R1, G1, and B1.
  • Section (C) in FIG. 2 shows an example of the conversion signals R2, G2, B2, and W2.
  • An example of a signal generation method performed by the conversion unit 16 will be described with reference to FIG.
  • the conversion unit 16 generates the increased signals R1, G1, and B1 increased by (1 + k) times the input video signals Ri, Gi, and Bi according to the equation (2).
  • the conversion unit 16 generates, for example, increase signals R1, G1, and B1 shown in the section (B) of FIG. 2 from the input video signals Ri, Gi, and Bi shown in the section (A) of FIG.
  • “1” indicates the maximum value of displayable luminance, that is, the maximum value of the gradation range that can be displayed by the red subpixel 21, the green subpixel 22, and the blue subpixel 23. When expressed in bits, it corresponds to “255”. In other words, in this embodiment, the signals of the respective colors are shown by normalizing the maximum displayable luminance value to “1”.
  • the increase signals R 1, G 1, and B 1 are obtained by increasing the luminance level that can be displayed by the red sub-pixel 21, the green sub-pixel 22, and the blue sub-pixel 23 by obtaining the effect of increasing the luminance by the white sub-pixel 24. Represents.
  • the conversion unit 16 generates a white conversion signal W2 used for display control of the white sub-pixel 24 from the increase signals R1, G1, and B1 according to Expression (3).
  • the conversion unit 16 exceeds the maximum luminance value when any of R1 / k, G1 / k, and B1 / k obtained by dividing the increase signals R1, G1, and B1 by k, respectively, does not exceed the maximum luminance value.
  • the smallest minimum R1 / k, G1 / k, and B1 / k are set as the white conversion signal W2.
  • the conversion unit 16 sets the maximum luminance value, that is, “1” as the white color conversion signal W2.
  • the conversion unit 16 generates red, green, and blue conversion signals R2, G2, and B2 according to Equation (4).
  • the conversion unit 16 converts the red conversion signal R2, the green conversion signal G2, and the blue conversion signal B2 as described above. And a white color conversion signal W 2 is generated and output to the correction unit 17.
  • the conversion unit 16 performs different processing depending on the control signal S2 from the region setting unit 13 as described below. Execute.
  • the conversion unit 16 converts the red conversion signal R2 according to Expression (5).
  • the green color conversion signal G2, the blue color conversion signal B2, and the white color conversion signal W2 are generated and output to the correction unit 17.
  • the conversion unit 16 does not perform the conversion using the above equations (2) to (4) for the pixels corresponding to the first display area 111, and uses the input video signals Ri, Gi, Bi as they are as the red conversion signal R2. , Green conversion signal G2, blue conversion signal B2, white conversion signal W2 as zero, and output to correction unit 17.
  • the red color conversion signal R2, the green color conversion signal G2, the blue color conversion signal B2, and the white color conversion signal W2 in Equation (5) are respectively the first red color conversion signal, the first green color conversion signal, the first blue color conversion signal, and the first white color conversion. Corresponds to the signal.
  • the conversion unit 16 applies the above equations (2) to (4).
  • a red color conversion signal R2 a green color conversion signal G2, a blue color conversion signal B2, and a white color conversion signal W2, and output them to the correction unit 17.
  • the red color conversion signal R2, the green color conversion signal G2, the blue color conversion signal B2, and the white color conversion signal W2 in the equations (4) and (3) are respectively the second red color conversion signal, the second green color conversion signal, and the second blue color conversion signal. , Corresponding to the second white color conversion signal.
  • the correction unit 17 receives the red conversion signal R2, the green conversion signal G2, the blue conversion signal B2, and the white conversion input from the conversion unit 16.
  • the signal W2 is used as it is, a red output control signal Ro, a green output control signal Go, a blue output control signal Bo for controlling the display luminance of the red subpixel 21, the green subpixel 22, the blue subpixel 23 and the white subpixel 24, respectively.
  • the white output control signal Wo is output to the display unit 11.
  • output control signals are distinguished between the first display area 111 and the second display area 112, they are referred to as a red output control signal Ro1, a red output control signal Ro2, and the like. And a red output control signal Ro.
  • the correction unit 17 performs different processing according to the control signal S2 from the region setting unit 13, as described below. To do.
  • the correction unit 17 receives the red conversion signal R2 and the green conversion signal input from the conversion unit 16.
  • G2 the blue color conversion signal B2, and the white color conversion signal W2 are directly used as the red output control signal Ro1, the green color output control signal Go1, the blue color output control signal Bo1, and the white color output control signal Wo1 in the first display area 111 of the display unit 11.
  • the correcting unit 17 uses the red output control signal Ro2 and the green output control signal according to Expression (6). Go2, blue output control signal Bo2, and white output control signal Wo2 are generated and output to the second display area 112 of the display unit 11.
  • Ro2 p1 ⁇ R2
  • Go2 p1 ⁇ G2
  • Bo2 p1 ⁇ B2
  • Wo2 p1 ⁇ W2 (6)
  • the correction unit 17 multiplies the red color conversion signal R2, the green color conversion signal G2, the blue color conversion signal B2, and the white color conversion signal W2 by the luminance reduction rate p1, respectively.
  • the signal level is attenuated to generate a red output control signal Ro2, a green output control signal Go2, a blue output control signal Bo2, and a white output control signal Wo2.
  • FIG. 3 is a diagram for explaining the luminance displayed in the first display area 111 and the second display area 112 in the first embodiment.
  • Section (A) in FIG. 3 is a diagram schematically illustrating the color gamut of the virtual display unit.
  • Section (B) in FIG. 3 is a diagram schematically showing a color gamut when the display unit 11 does not cause the white sub-pixel 24 to emit light.
  • Section (C) in FIG. 3 is a diagram schematically illustrating the color gamut of the display unit 11.
  • FIG. 4 is a diagram showing the display screen 110 of the display unit 11. The brightness displayed in the first display area 111 and the second display area 112 in the first embodiment will be described with reference to FIGS. 3 and 4.
  • the red subpixel R, the green subpixel G, and the blue subpixel of the display unit 11 shown in the section (C) of FIG. The size of B is reduced by the amount of white subpixel W compared to the size of red subpixel R, green subpixel G, and blue subpixel B of the virtual display section shown in section (A) of FIG. Yes.
  • Lmax 1.
  • the sizes of the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B of the display unit 11 are respectively the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel of the virtual display unit. Since the white subpixel W is smaller than the size of B, the maximum luminance that can be displayed only by the red subpixel R, the green subpixel G, and the blue subpixel B of the display unit 11 is reduced. It is.
  • the color gamut of the display unit 11 is small in size of the red subpixel R, the green subpixel G, and the blue subpixel B in the R, G, and B directions.
  • the color gamut of the virtual display section shown in the section (A) of FIG. 3 is smaller by the amount (that is, the luminance reduction rate p1).
  • the maximum luminance value Lmax that can be displayed in the section (C) of FIG. 3 is increased by the amount of the white sub-pixel W (that is, the luminance ratio k) compared to the section (A) of FIG. .
  • the display unit 11 cannot realize the color gamut shown in the section (A) of FIG.
  • the signal level is attenuated by the luminance decrease of section (B) of FIG. 3 relative to section (A) of FIG.
  • the luminance of the color gamut shown in section (A) of FIG. 3 instead of comparing the luminance of the color gamut shown in section (A) of FIG. 3 with the luminance of the color gamut shown in section (C) of FIG.
  • the luminance of the color gamut shown in B) is compared with the luminance of the color gamut shown in section (D) of FIG. Thereby, the luminance of the video displayed by the virtual display unit and the luminance of the video displayed by the display unit 11 can be correctly compared.
  • the second display area 112 that is roughly hatched is higher in luminance than the first display area 111 that is densely hatched.
  • the first display area 111 displays an image without using the white sub-pixel 24, and the second display area 112 displays an image using the white sub-pixel 24. It represents that.
  • the red subpixel, the green subpixel, and the blue subpixel of the display unit 11 with respect to the sizes of the red subpixel, the green subpixel, and the blue subpixel of the virtual display unit.
  • the video of the first display area 111 and the video of the second display area 112 are generated. That is, the image of the first display area 111 is displayed without causing the white sub-pixel 24 to emit light among the pixels corresponding to the first display area 111. Further, the video level of the video signal of the pixel corresponding to the second display area 112 is attenuated by the luminance reduction rate p1 with respect to the input video signal level, and the video in the second display area 112 is displayed.
  • FIG. 5 is a block diagram showing a configuration of a display device according to the second embodiment of the present invention.
  • the display device of the second embodiment shown in FIG. 5 includes the conversion unit 161 instead of the conversion unit 16 in the display device of the first embodiment shown in FIG. 1, and the correction unit 171 instead of the correction unit 17.
  • amendment part is replaced with respect to 1st Embodiment.
  • the second embodiment will be described focusing on differences from the first embodiment.
  • the correction unit 171 When the control signal S1 indicating the normal mode is output from the mode setting unit 12, the correction unit 171 outputs the input video signals Ri, Gi, Bi to the conversion unit 161 as they are. Further, when the control signal S1 representing the demo mode is output from the mode setting unit 12, the correction unit 171 performs different processing depending on the control signal S2 from the region setting unit 13, as will be described below. Execute.
  • the correction unit 171 converts the input video signals Ri, Gi, Bi as they are. 161 to output. In addition, the correction unit 171 determines the red correction signal Ric1 and the green color for the pixel when the control signal S2 from the region setting unit 13 is a low level signal (that is, the pixel corresponding to the second display region 112) according to Expression (8).
  • the correction signal Gic1 and the blue correction signal Bic1 are generated and output to the conversion unit 161.
  • Ric1 p1 ⁇ Ri
  • Gic1 p1 ⁇ Gi
  • Bic1 p1 ⁇ Bi (8)
  • the correction unit 171 attenuates the signal level by multiplying the input video signals Ri, Gi, Bi of the pixels corresponding to the second display region 112 by the luminance reduction rate p1, respectively, and thereby red correction signal Ric1, green A correction signal Gic1 and a blue correction signal Bic1 are generated.
  • the conversion unit 161 When the control signal S1 indicating the normal mode is output from the mode setting unit 12, the conversion unit 161 operates in exactly the same way as the conversion unit 16 of the first embodiment, and the above equations (2) to ( 4), a red color conversion signal R2, a green color conversion signal G2, a blue color conversion signal B2, and a white color conversion signal W2 are generated.
  • the converter 161 generates the red color conversion signal R2, the green color conversion signal G2, the blue color conversion signal B2, and the white color conversion signal W2 as they are, and the red color output control signal Ro, the green color output control signal Go, the blue color output control signal Bo, and the white color output control.
  • the signal Wo is output to the display unit 11.
  • the conversion unit 161 performs different processing depending on the control signal S2 from the region setting unit 13, as described below. Execute.
  • the conversion unit 161 is exactly the same as the conversion unit 16 of the first embodiment for pixels when the control signal S2 from the region setting unit 13 is a high-level signal (that is, pixels corresponding to the first display region 111).
  • the red color conversion signal R2, the green color conversion signal G2, the blue color conversion signal B2, and the white color conversion signal W2 are generated according to the above equations (2) to (4).
  • the converter 161 uses the generated red conversion signal R2, green conversion signal G2, and blue conversion signal B2 as the red output control signal Ro1, green output control signal Go1, and blue output control signal Bo1 as they are for the first display on the display unit 11. Output to area 111. Further, the conversion unit 161 sets the white output control signal Wo1 to zero and does not cause the white subpixel 24 to emit light.
  • the conversion unit 161 replaces the input video signals Ri, Gi, and Bi for pixels when the control signal S2 from the region setting unit 13 is a low level signal (that is, pixels corresponding to the second display region 112). , Except that the red correction signal Ric1, the green correction signal Gic1 and the blue correction signal Bic1 input from the correction unit 171 operate in the same manner as the conversion unit 16 of the first embodiment, and the red conversion signal Rc2, green A conversion signal Gc2 and a blue color conversion signal Bc2 are generated.
  • the conversion unit 161 generates the increase signals Rc1, Gc1, and Bc1 according to the equation (9) similarly to the equation (2).
  • the conversion unit 161 generates the white color conversion signal Wc2 according to the equation (10), similarly to the above equation (3).
  • Wc2 min (Rc1 / k, Gc1 / k, Bc1 / k, 1) ... (10)
  • the conversion unit 161 generates the red color conversion signal Rc2, the green color conversion signal Gc2, and the blue color conversion signal Bc2 according to the equation (11) as in the above equation (4).
  • the conversion unit 161 generates a red output control signal Ro2, a green output control signal Go2, a blue output control signal Bo2, and a white output control signal Wo2 according to Expression (12).
  • the correction unit 171 since the correction unit 171 has already multiplied the luminance reduction rate p1 by the input video signals Ri, Gi, Bi to attenuate the signal level, the pixels corresponding to the second display area 112 ,
  • the red color conversion signal Rc2, the green color conversion signal Gc2, the blue color conversion signal Bc2 and the white color conversion signal Wc2 are directly used as the red output control signal Ro2, the green color output control signal Go2, the blue color output control signal Bo2 and the white color output control signal Wo2.
  • the red sub-pixel of the display unit 11 with respect to the sizes of the red sub-pixel, the green sub-pixel, and the blue sub-pixel of the virtual display unit.
  • the video of the first display area 111 and the video of the second display area 112 are generated in consideration of the luminance reduction rate indicating the reduction rate of the size of the green subpixel and the blue subpixel. That is, the signal processing unit 14 generates and displays the video of the first display area 111 based on the input video signal without causing the white subpixel 24 to emit light.
  • the signal processing unit 14 attenuates the signal level by multiplying the input video signal of the pixel corresponding to the second display area 112 by the luminance reduction rate, and generates and displays the video of the second display area 112. ing. Therefore, it is possible to correctly compare the luminance of the video displayed by the virtual display unit and the luminance of the video displayed by the display unit 11 while using the display unit 11 that is a four-color display unit. Further, it is possible to visually recognize a relative luminance difference between the luminance of the video displayed on the virtual display unit and the luminance of the video displayed on the display unit 11.
  • FIG. 6 is a block diagram showing the configuration of the display device according to the third embodiment of the present invention.
  • symbol is assigned with respect to the element similar to 1st Embodiment.
  • the display device according to the third embodiment shown in FIG. 6 includes the storage unit 151 instead of the storage unit 15 and the conversion unit 162 instead of the conversion unit 16 in the display device of the first embodiment shown in FIG. And a correction unit 172 is provided instead of the correction unit 17.
  • amendment part is replaced with respect to 1st Embodiment.
  • control signal S1 of the mode setting unit 12 and the control signal S2 of the region setting unit 13 are not output to the conversion unit 162 but are output only to the correction unit 172.
  • the third embodiment will be described focusing on differences from the first embodiment.
  • the correction unit 172 When the control signal S1 representing the normal mode is output from the mode setting unit 12, the correction unit 172 outputs the input video signals Ri, Gi, Bi to the conversion unit 162 as they are. Further, when the control signal S1 representing the demo mode is output from the mode setting unit 12, the correction unit 172 performs different processing depending on the control signal S2 from the region setting unit 13, as will be described below. Execute.
  • the correction unit 172 uses the equation (13) from the input video signals Ri, Gi, Bi. ), A red correction signal Ric2, a green correction signal Gic2, and a blue correction signal Bic2 are generated and output to the converter 162.
  • the correction unit 172 outputs the input video signals Ri, Gi, Bi to the conversion unit 162 as they are as the red correction signal Ric2, the green correction signal Gic2, and the blue correction signal Bic2 without being attenuated.
  • the correction unit 172 uses the input video signals Ri, Gi, Bi for the pixels when the control signal S2 from the region setting unit 13 is a high level signal (that is, the pixels corresponding to the first display region 111).
  • the red correction signal Ric2, the green correction signal Gic2, and the blue correction signal Bic2 are generated by (14) and output to the conversion unit 162.
  • Ric2 (1 / p2) ⁇ Ri
  • Gic2 (1 / p2) ⁇ Gi
  • Bic2 (1 / p2) ⁇ Bi (14)
  • the correction unit 172 has a signal level so that the luminance of the video displayed in the first display area 111 corresponds to the luminance of the video displayed by the virtual display unit. Gain processing that attenuates is performed.
  • the conversion unit 162 performs normal signal conversion processing regardless of whether the control signal S1 output from the mode setting unit 12 is a signal indicating the normal mode or a signal indicating the demo mode. That is, when the control signal S1 indicating the normal mode is output from the mode setting unit 12, the conversion unit 162 uses the input video signals Ri, Gi, Bi input from the correction unit 172, and the above equation ( 2) to 4), a red color conversion signal R2, a green color conversion signal G2, a blue color conversion signal B2 and a white color conversion signal W2 are generated. The generated conversion signals are directly used as a red output control signal Ro, a green output control signal Go, and a blue color. The output control signal Bo and the white output control signal Wo are output to the display unit 11.
  • the conversion unit 162 replaces the input video signals Ri, Gi, Bi with the red correction signal Ric2, the green correction signal Gic2, and the blue color.
  • the operation is exactly the same as the conversion unit 16 of the first embodiment, and the red color conversion signal R2, the green color conversion signal G2, the blue color conversion signal B2, and the white color conversion signal W2 are generated.
  • the conversion unit 162 generates the increase signals R1, G1, and B1 according to the equation (15) similarly to the equation (2).
  • the conversion unit 162 generates the white color conversion signal W2 according to the equation (16), similarly to the equation (3).
  • the conversion unit 162 generates red, green, and blue conversion signals R2, G2, and B2 according to the equation (17), similarly to the equation (4).
  • R2 Rc1-k ⁇ W2
  • G2 Gc1-k ⁇ W2
  • B2 Bc1 ⁇ k ⁇ W2 (17)
  • the conversion unit 162 converts the red output control signal Ro, the green output control signal Go, and the blue color with respect to all the pixels of the display unit 11, that is, the pixels corresponding to the first and second display regions 111 and 112 according to the equation (18).
  • An output control signal Bo and a white output control signal Wo are generated and output to the display unit 11.
  • the conversion unit 162 uses the generated conversion signals as they are as the red output control signal Ro, the green output control signal Go, the blue output control signal Bo, and the white output control signal Wo.
  • an image is displayed using the white sub-pixel 24 also in the first display area 111.
  • the correction unit 172 since the correction unit 172 performs gain processing for attenuating the signal level only for the video signal of the pixel corresponding to the first display region 111, the conversion unit 162 Regardless of the second display areas 111 and 112, a signal output from the correction unit 172 is used to generate a red output control signal Ro, a green output control signal Go, a blue output control signal Bo, and a white output control signal Wo.
  • a red output control signal Ro a red output control signal Ro
  • a green output control signal Go a green output control signal Go
  • a blue output control signal Bo a blue output control signal Bo
  • FIG. 7 is a diagram for explaining the luminance displayed in the first display area 111 and the second display area 112 in the third embodiment.
  • Section (A) in FIG. 7 is a diagram schematically illustrating the color gamut of the virtual display unit.
  • Section (B) in FIG. 7 is a diagram schematically illustrating a color gamut when the display unit 11 does not cause the white sub-pixel 24 to emit light.
  • Section (C) in FIG. 7 is a diagram schematically illustrating the color gamut of the display unit 11.
  • FIG. 8 is a diagram showing the display screen 110 of the display unit 11. The brightness displayed in the first display area 111 and the second display area 112 in the third embodiment will be described with reference to FIGS.
  • section (A), (B), and (C) of FIG. 7 are exactly the same as those shown in sections (A), (B), and (C) of FIG. Is omitted.
  • the display unit 11 which is a four-color display unit cannot realize the color gamut shown in the section (A) of FIG.
  • the display shown in section (C) of FIG. 7 with respect to the luminance of the virtual display unit shown in section (A) of FIG.
  • the brightness is reduced from the brightness shown in the section (C) of FIG.
  • this third embodiment instead of comparing the luminance of the color gamut shown in section (A) of FIG. 7 with the luminance of the color gamut shown in section (C) of FIG.
  • the brightness of the color gamut shown in section (D) is compared with the brightness of the color gamut shown in section (C) of FIG. Thereby, the luminance of the video displayed by the virtual display unit and the luminance of the video displayed by the display unit 11 can be correctly compared.
  • the second display area 112 that is roughly hatched is higher in luminance than the first display area 111 that is densely hatched.
  • the hatching directions are the same to indicate that the first display area 111 and the second display area 112 display images using the white sub-pixels 24.
  • the first display area 111 is considered in consideration of the luminance increase rate of the maximum luminance that can be displayed by the display unit 11 with respect to the maximum luminance that can be displayed by the virtual display unit.
  • the video of the second display area 112 are generated. That is, a video is displayed on the first display area 111 by attenuating the signal level of the video signal of the pixel corresponding to the first display area 111 by the luminance increase rate with respect to the input video signal level.
  • the video based on the input video signal is displayed as it is.
  • the third embodiment an image based on the color gamut shown in the section (C) of FIG. 7 is displayed in the second display area 112 shown in FIG. In other words, in the second display area 112, an image having the original brightness of the display unit 11 can be displayed. Therefore, in this respect, the third embodiment is preferable to the first and second embodiments.
  • the converter 162 performs normal signal conversion processing regardless of whether the control signal S1 output from the mode setting unit 12 is a signal indicating the normal mode or a signal indicating the demo mode.
  • the control signal S1 of the mode setting unit 12 and the control signal S2 of the region setting unit 13 are not output to the conversion unit 162 but are output only to the correction unit 172. Therefore, the configuration can be simplified as compared with the first and second embodiments.
  • the area setting unit 13 divides the display screen 110 of the display unit 11 in half, for example, as shown in FIG. 4 or FIG. Although set, it is not limited to this.
  • a setting key 18 may be provided as indicated by a broken line in FIGS.
  • the setting key 18 designates the positions and sizes of the first display area 111 and the second display area 112 by an external operation by an operator or the like, for example.
  • the area setting unit 13 sets the first and second display areas 111 and 112 having the position and size designated by the setting key 18. By providing the setting key 18, for example, the first display area 111 can be displayed in a small window in the second display area 112.
  • the area setting unit 13 always generates and outputs the control signal S2 indicating the first and second display areas 111 and 112, but is not limited thereto.
  • the mode setting unit 12 outputs a control signal S1 indicating the setting mode to the region setting unit 13, and the region setting unit 13 Only when the control signal S1 indicating the mode is input, the control signal S2 indicating the first and second display areas 111 and 112 may be generated and output.
  • the three primary color signals Ri, Gi, Bi are used as the input video signal.
  • signals input from the outside are not limited. That is, for example, when a video signal other than the three primary color signals such as NTSC is input from the outside, the three primary color signals Ri, Gi, Bi are separated from the input video signal and used as the input video signal. That's fine.
  • p1 0.75
  • the luminance reduction rate for each sub-pixel of the virtual display unit may be obtained.
  • the size reduction rate of the display unit 11 with respect to the virtual display unit in the specific color sub-pixel May be applied to sub-pixels of other colors.
  • the sizes of the sub-pixels are not the same, it is possible to simplify the configuration such as calculation.
  • the same luminance reduction rate p1 can be obtained regardless of which color sub-pixel is the specific color sub-pixel. become.
  • a display device is input with a four-color display unit having a plurality of pixels including a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel that display red, green, blue, and white, respectively.
  • a region setting unit for setting a second display region for displaying an image with a second luminance corresponding to the first luminance
  • the signal processing unit is configured to correspond to the first display region.
  • Signal levels of the red output control signal, the green output control signal, the blue output control signal, and the white output control signal of the sub-pixel, and the red output control signal of the sub-pixel corresponding to the second display area, At least one of the green output control signal, the blue output control signal, and the white output control signal is attenuated from a signal level corresponding to the video signal.
  • the four-color display unit has a plurality of pixels including a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel that display red, green, blue, and white, respectively.
  • the signal processing unit from the input video signal for each pixel, a red output control signal, a green output control signal, and a blue output control that respectively control the display luminance of the red subpixel, the green subpixel, the blue subpixel, and the white subpixel.
  • a signal and a white output control signal are generated and output to the four-color display unit.
  • the region setting unit assumes that a plurality of pixels of the four-color display unit includes only a red sub-pixel, a green sub-pixel, and a blue sub-pixel and does not include a white sub-pixel as a display region of the four-color display unit.
  • a first display area for displaying an image with a first luminance corresponding to the luminance at the time and a second display area for displaying an image with a second luminance corresponding to the first luminance are set.
  • the signal processing unit includes signal levels of the red output control signal, the green output control signal, the blue output control signal, and the white output control signal of each sub pixel corresponding to the first display area, and each sub pixel corresponding to the second display area. At least one of the red output control signal, the green output control signal, the blue output control signal, and the white output control signal is attenuated from the signal level corresponding to the video signal.
  • a plurality of pixels of the four-color display unit includes only a red sub-pixel, a green sub-pixel, and a blue sub-pixel and does not include a white sub-pixel
  • the red sub-pixel, green included in the virtual display unit The size of the sub-pixel and the blue sub-pixel is the same as the size of the red sub-pixel, the green sub-pixel, and the blue sub-pixel that are actually included in the four-color display unit, because the white sub-pixel is not included. It should be bigger. Therefore, it is not possible to display an image with a brightness that can be displayed by the virtual display unit when the above assumption is made.
  • the signal processing unit includes the signal level of each output control signal of each subpixel corresponding to the first display area and the signal level of each output control signal of each subpixel corresponding to the second display area. Is attenuated from the signal level corresponding to the video signal.
  • the video is displayed on the first display area with the first luminance corresponding to the luminance when the above assumption is made, and the video is displayed on the second display area with the second luminance corresponding to the first luminance. That is, the first luminance is set to a luminance lower than the luminance corresponding to the video signal, or the second luminance is set to a luminance lower than the luminance corresponding to the video signal.
  • the signal processing unit includes the red output control signal, the green output control signal, and the green subpixel corresponding to the first display area, the green subpixel, and the blue subpixel.
  • the signal level of the blue output control signal is set to a signal level corresponding to the video signal
  • the signal level of the white output control signal of the white sub-pixel corresponding to the first display area is set to zero
  • the second display area It is preferable to attenuate signal levels of the red output control signal, the green output control signal, the blue output control signal, and the white output control signal of each of the sub-pixels corresponding to the video signal from the signal level corresponding to the video signal. .
  • the signal processing unit determines the signal levels of the red output control signal, the green output control signal, and the blue output control signal of the red subpixel, the green subpixel, and the blue subpixel corresponding to the first display area as the video signal. And the signal level of the white output control signal of the white sub-pixel corresponding to the first display area is set to zero.
  • the white sub-pixel does not contribute to the display, and the video is displayed only by the red sub-pixel, the green sub-pixel, and the blue sub-pixel.
  • an image cannot be displayed in the first display area with the brightness when the above assumption is made.
  • the signal processing unit corresponds to the video signal with the signal levels of the red output control signal, the green output control signal, the blue output control signal, and the white output control signal of each sub-pixel corresponding to the second display area. Attenuate from signal level.
  • the second luminance which is the luminance of the video displayed in the second display area, can be reduced to a value corresponding to the first luminance displayed in the first display area.
  • the luminance that can be displayed by the four-color display unit and that the plurality of pixels of the four-color display unit include only the red subpixel, the green subpixel, and the blue subpixel and do not include the white subpixel. It is possible to visually recognize a relative luminance difference from the luminance that can be displayed by the virtual display unit.
  • the four-color display A quotient obtained by dividing the size of the specific color sub-pixel of the unit by the size of the specific color sub-pixel when the assumption is made, and a storage unit in which the luminance reduction rate is stored;
  • the signal levels of the red output control signal, the green output control signal, the blue output control signal, and the white output control signal of each of the sub-pixels corresponding to the second display region are set with respect to the signal level corresponding to the video signal.
  • the four-color display unit A quotient obtained by dividing the size of the specific color sub-pixel by the size of the specific color sub-pixel when the above assumption is made is stored as the luminance reduction rate.
  • the signal processing unit sets the signal levels of the red output control signal, the green output control signal, the blue output control signal, and the white output control signal of each sub-pixel corresponding to the second display area to the signal level corresponding to the video signal. Attenuation is attenuated by the luminance decrease rate stored in the storage unit.
  • the second luminance of the video displayed in the second display area can be accurately reduced to a value corresponding to the first luminance displayed in the first display area.
  • the luminance that can be displayed by the four-color display unit and that the plurality of pixels of the four-color display unit include only the red subpixel, the green subpixel, and the blue subpixel and do not include the white subpixel.
  • the relative luminance difference from the luminance that can be displayed by the virtual display unit can be reliably recognized.
  • the signal processing unit may further convert a red input signal, a green input signal, and a blue input signal obtained from the video signal of the pixel corresponding to the first display region to a first red conversion signal.
  • a first green color conversion signal and a first blue color conversion signal, a first white color conversion signal is set to zero, and the video signal of the pixel corresponding to the second display area is converted to obtain a second red color conversion
  • a conversion unit that generates a signal, a second green conversion signal, a second blue conversion signal, and a second white conversion signal, the first red conversion signal generated by the conversion unit, the first green conversion signal, and the first
  • the blue color conversion signal and the first white color conversion signal are used as the red output control signal, the green color output control signal, the blue color output control signal, and the white color output control signal as the first table of the four-color display unit.
  • the signal processing unit further includes a conversion unit and a correction unit.
  • the conversion unit converts the red input signal, the green input signal, and the blue input signal obtained from the video signal of the pixel corresponding to the first display area into the first red conversion signal, the first green conversion signal, and the first blue conversion signal.
  • the first white color conversion signal is set to zero.
  • the conversion unit also converts the video signal of the pixel corresponding to the second display area to generate a second red conversion signal, a second green conversion signal, a second blue conversion signal, and a second white conversion signal.
  • the correction unit converts the first red conversion signal, the first green conversion signal, the first blue conversion signal, and the first white conversion signal generated by the conversion unit into a red output control signal, a green output control signal, a blue output control signal, and a white color.
  • An output control signal is output to the first display area of the four-color display unit.
  • the correction unit multiplies the luminance reduction rate stored in the storage unit by the second red conversion signal, the second green conversion signal, the second blue conversion signal, and the second white conversion signal generated by the conversion unit, respectively.
  • Each product is output to the second display area of the four-color display unit as a red output control signal, a green output control signal, a blue output control signal, and a white output control signal.
  • the correction unit controls the output of each color to be output to the second display area so that the second luminance displayed in the second display area becomes a value corresponding to the first luminance displayed in the first display area.
  • the signal is attenuated.
  • the luminance that can be displayed by the four-color display unit and that the plurality of pixels of the four-color display unit include only the red subpixel, the green subpixel, and the blue subpixel and do not include the white subpixel.
  • the relative luminance difference from the luminance that can be displayed by the virtual display unit can be reliably recognized.
  • the signal processing unit further multiplies the video signal of the pixel corresponding to the second display area by the luminance reduction rate stored in the storage unit, thereby correcting red color.
  • the white color output control signal is generated as zero and output to the first display area of the four-color display unit, and the red color correction signal and the green color correction signal generated by the correction unit
  • the blue correction signal are converted to generate the red output control signal, the green output control signal, the blue output control signal, and the white output control signal, respectively.
  • the signal processing unit further includes a correction unit and a conversion unit.
  • the correction unit multiplies the luminance reduction rate stored in the storage unit by the video signal of the pixel corresponding to the second display area, and generates a red correction signal, a green correction signal, and a blue correction signal.
  • the conversion unit converts the video signal of the pixel corresponding to the first display region to generate a red output control signal, a green output control signal, and a blue output control signal, and generates a white output control signal as zero to generate a four-color type. Output to the first display area of the display unit.
  • the conversion unit converts the red correction signal, the green correction signal, and the blue correction signal generated by the correction unit to generate a red output control signal, a green output control signal, a blue output control signal, and a white output control signal, respectively. Output to the second display area of the four-color display.
  • the correction unit multiplies the video signal of the pixel corresponding to the second display area by the luminance reduction rate to generate a red correction signal, a green correction signal, and a blue correction signal.
  • the conversion unit generates a red output control signal, a green output control signal, a blue output control signal, and a white output control signal based on the red correction signal, the green correction signal, and the blue correction signal. Therefore, the correction unit controls the output of each color to be output to the second display area so that the second luminance displayed in the second display area becomes a value corresponding to the first luminance displayed in the first display area.
  • the signal is attenuated.
  • the relative luminance difference from the luminance that can be displayed by the virtual display unit can be reliably recognized.
  • the signal processing unit may be configured to output the red output control signal, the green output control signal, the blue output control signal, and the white output control signal of each of the sub-pixels corresponding to the first display area.
  • the red output control signal, the green output control signal, the blue output control signal of each of the sub-pixels corresponding to the second display area, and the signal level corresponding to the video signal are attenuated from the signal level corresponding to the video signal.
  • the signal level of the white output control signal is a signal level corresponding to the video signal.
  • the signal processing unit corresponds to the video signal with the signal levels of the red output control signal, the green output control signal, the blue output control signal, and the white output control signal of each sub-pixel corresponding to the first display area. Attenuate from signal level. Further, the signal processing unit sets the signal levels of the red output control signal, the green output control signal, the blue output control signal, and the white output control signal of each sub-pixel corresponding to the second display area to the signal level corresponding to the video signal. To do.
  • the maximum luminance that can be displayed by the four-color display unit is higher than the maximum luminance that can be displayed by the virtual display unit. .
  • the signal processing unit converts the signal levels of the red output control signal, the green output control signal, the blue output control signal, and the white output control signal of each sub-pixel corresponding to the first display area into the video signal. Attenuate from corresponding signal level. Thereby, the 1st brightness
  • the signal processing unit sets the signal levels of the red output control signal, the green output control signal, the blue output control signal, and the white output control signal of each sub-pixel corresponding to the second display area as signal levels corresponding to the video signal.
  • the second luminance of the video displayed in the second display area is a value corresponding to the maximum luminance that can be displayed by the four-color display unit.
  • the luminance that can be displayed by the four-color display unit and that the plurality of pixels of the four-color display unit include only the red subpixel, the green subpixel, and the blue subpixel and do not include the white subpixel. It is possible to visually recognize a relative luminance difference from the luminance that can be displayed by the virtual display unit.
  • the signal processing unit can display the maximum brightness that can be displayed when the four-color display unit makes the assumption, and can be displayed when the four-color display unit does not make the assumption.
  • the quotient obtained by dividing the maximum luminance includes a storage unit that stores the luminance increase rate, and the signal processing unit includes the red output control signal and the green output control for each of the sub-pixels corresponding to the first display area. It is preferable that the signal level of the signal, the blue output control signal, and the white output control signal is attenuated by the luminance increase rate stored in the storage unit with respect to the signal level corresponding to the video signal.
  • the signal processing unit includes the storage unit.
  • the storage unit increases the luminance by dividing the maximum luminance that can be displayed when the four-color display unit makes the above assumption by dividing the maximum luminance that can be displayed when the four-color display unit does not make the above assumption.
  • the signal processing unit sets the signal levels of the red output control signal, the green output control signal, the blue output control signal, and the white output control signal of each sub-pixel corresponding to the first display area with respect to the signal level corresponding to the video signal. Attenuate by the luminance increase rate stored in the storage unit. Therefore, the first luminance of the video displayed in the first display area is a value corresponding to the maximum luminance that can be displayed by the virtual display unit.
  • the signal processing unit further divides the video signal of the pixel corresponding to the first display area by the luminance increase rate stored in the storage unit, thereby obtaining a red color.
  • a red input signal, a green input signal, and a blue input signal which are generated from the video signal of the pixel corresponding to the second display area, are generated by generating a correction signal, a green correction signal, and a blue correction signal.
  • the signal processing unit further includes a correction unit and a conversion unit.
  • the correction unit divides the video signal of the pixel corresponding to the first display area by the luminance increase rate stored in the storage unit to generate a red correction signal, a green correction signal, and a blue correction signal.
  • the correction unit uses the red input signal, the green input signal, and the blue input signal obtained from the video signal of the pixel corresponding to the second display area as a red correction signal, a green correction signal, and a blue correction signal.
  • the conversion unit converts the red correction signal, the green correction signal, and the blue correction signal generated by the correction unit to generate a red output control signal, a green output control signal, a blue output control signal, and a white output control signal. Output to the color display.
  • the first luminance displayed in the first display region is the maximum luminance that can be displayed by the virtual display unit.
  • the correction unit uses the red input signal, the green input signal, and the blue input signal obtained from the video signal of the pixel corresponding to the second display area as the red correction signal, the green correction signal, and the blue correction signal.
  • the second luminance of the video displayed in the display area is a value corresponding to the maximum luminance that can be displayed by the four-color display unit.
  • a display method includes a four-color display unit having a plurality of pixels including a red subpixel, a green subpixel, a blue subpixel, and a white subpixel that display red, green, blue, and white, respectively.
  • a red output control signal for controlling display luminance of each of the red sub-pixel, the green sub-pixel, the blue sub-pixel, and the white sub-pixel from the input video signal for each pixel.
  • the signal processing step includes signal levels of the red output control signal, the green output control signal, the blue output control signal, and the white output control signal of each of the sub-pixels corresponding to the first display area, and the second Corresponding to the video signal at least one of the red output control signal, the green output control signal, the blue output control signal, and the white output control signal of each sub-pixel corresponding to the display area. Attenuate from signal level.
  • the red output control signal for controlling the display luminance of the red subpixel, the green subpixel, the blue subpixel, and the white subpixel, and the green output from the input video signal for each pixel.
  • a control signal, a blue output control signal, and a white output control signal are generated and output to the four-color display unit.
  • a plurality of pixels of the four-color display unit includes only a red sub-pixel, a green sub-pixel, and a blue sub-pixel and does not include a white sub-pixel as a display region of the four-color display
  • a first display area for displaying an image with a first luminance corresponding to the luminance at the time and a second display area for displaying an image with a second luminance corresponding to the first luminance are set.
  • the signal processing step includes the signal levels of the red output control signal, the green output control signal, the blue output control signal, and the white output control signal of each sub pixel corresponding to the first display area, and each sub pixel corresponding to the second display area. At least one of the red output control signal, the green output control signal, the blue output control signal, and the white output control signal is attenuated from the signal level corresponding to the video signal.
  • a plurality of pixels of the four-color display unit includes only a red sub-pixel, a green sub-pixel, and a blue sub-pixel and does not include a white sub-pixel
  • the red sub-pixel, green included in the virtual display unit The size of the sub-pixel and the blue sub-pixel is the same as the size of the red sub-pixel, the green sub-pixel, and the blue sub-pixel that are actually included in the four-color display unit, because the white sub-pixel is not included. It should be bigger. Therefore, it is not possible to display an image with a brightness that can be displayed by the virtual display unit when the above assumption is made.
  • the signal processing step includes the signal level of each output control signal of each sub-pixel corresponding to the first display area and the signal level of each output control signal of each sub-pixel corresponding to the second display area. Is attenuated from the signal level corresponding to the video signal.
  • the video is displayed on the first display area with the first luminance corresponding to the luminance when the above assumption is made, and the video is displayed on the second display area with the second luminance corresponding to the first luminance. That is, the first luminance is set to a luminance lower than the luminance corresponding to the video signal, or the second luminance is set to a luminance lower than the luminance corresponding to the video signal.
  • the first luminance of the video displayed in the first display area is set to a luminance lower than the luminance corresponding to the video signal, or the second luminance of the video displayed in the second display area is used as the video signal.
  • the luminance is lower than the corresponding luminance.
  • the display device and the display method according to the present invention are useful as an apparatus and a method for suitably displaying a color image on various displays such as a liquid crystal display, a plasma display panel, and an organic EL display.

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Abstract

Le but de la présente invention est de pourvoir à un dispositif d'affichage, par lequel une différence de luminance relative entre la luminance d'une image affichée par une unité d'affichage en quatre couleurs et la luminance d'une image supposée être affichée par une unité d'affichage ne comprenant pas de sous-pixel blanc puisse être visuellement reconnue, et de proposer un procédé d'affichage. Un dispositif d'affichage selon la présente invention comprend : une unité d'affichage en quatre couleurs (11), qui comprend des sous-pixels rouges, verts, bleus et blancs (21-24) ; une unité de traitement de signal (14), qui génère des signaux de commande de sortie de rouge, de vert, de bleu et de blanc sur la base de signaux d'image, et délivre les signaux de commande de sortie à l'unité d'affichage en quatre couleurs ; et une unité de réglage de région (13), qui règle une première région d'affichage (111) et une seconde région d'affichage (112). L'unité de traitement de signal (14) atténue, à partir de niveaux de signal qui correspondent aux signaux d'image, les niveaux de signal des signaux de commande de sortie de rouge, de vert, de bleu et de blanc (Ro1, Go1, Bo1, Wo1) de chacun des sous-pixels qui correspondent à la première région d'affichage (111) et/ou les niveaux de signal des signaux de commande de sortie de rouge, de vert, de bleu et de blanc (Ro2, Go2, Bo2, Wo2) de chacun des sous-pixels qui correspondent à la seconde région d'affichage (112).
PCT/JP2011/006928 2011-03-16 2011-12-12 Dispositif d'affichage et procédé d'affichage WO2012124007A1 (fr)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004045865A (ja) * 2002-07-12 2004-02-12 Sharp Corp 表示装置およびそれを備える携帯電話機
JP2004102292A (ja) * 2002-09-11 2004-04-02 Samsung Electronics Co Ltd 液晶表示装置、液晶表示装置の駆動装置及びその方法
WO2006025359A1 (fr) * 2004-09-03 2006-03-09 Sharp Kabushiki Kaisha Procédé de commande d'affichage, dispositif de commande d'affichage, ses programme et support d'enregistrement, et affichage
JP2007271842A (ja) * 2006-03-31 2007-10-18 Hitachi Displays Ltd 表示装置
JP2009229883A (ja) * 2008-03-24 2009-10-08 Sharp Corp 表示装置
JP2010122657A (ja) * 2008-11-21 2010-06-03 Samsung Electronics Co Ltd 表示装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004045865A (ja) * 2002-07-12 2004-02-12 Sharp Corp 表示装置およびそれを備える携帯電話機
JP2004102292A (ja) * 2002-09-11 2004-04-02 Samsung Electronics Co Ltd 液晶表示装置、液晶表示装置の駆動装置及びその方法
WO2006025359A1 (fr) * 2004-09-03 2006-03-09 Sharp Kabushiki Kaisha Procédé de commande d'affichage, dispositif de commande d'affichage, ses programme et support d'enregistrement, et affichage
JP2007271842A (ja) * 2006-03-31 2007-10-18 Hitachi Displays Ltd 表示装置
JP2009229883A (ja) * 2008-03-24 2009-10-08 Sharp Corp 表示装置
JP2010122657A (ja) * 2008-11-21 2010-06-03 Samsung Electronics Co Ltd 表示装置

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