| 主权项 |
1. A liquid crystal display apparatus comprising:
a detection unit that detects a luminance of a backlight unit; and a controller that controls a voltage of a counter electrode, shared by pixels, based on a detection result of the detection unit, wherein each of the pixels includes a first subpixel which displays a first primary color, a second subpixel which displays a second primary color, a third subpixel which displays a third primary color, and a fourth subpixel which displays a fourth color; wherein the controller is configured to change a first video signal that is input from outside into a second video signal; wherein the first video signal includes first gradient information regarding gradient values of the first subpixel, the second subpixel, and the third subpixel; wherein the second video signal includes second gradient information regarding gradient values of the first subpixel, the second subpixel, the third subpixel, and the fourth subpixel; wherein the luminance of the backlight unit is changed according to a level of the second video signal applied to a pixel electrode; wherein the detection unit is configured to detect the luminance of the backlight unit from the level of the second video signal; wherein the controller controls a common voltage, applied to the counter electrode, based on a detection result of the detection unit, and wherein each of the pixels includes a pixel transistor that applies the second video signal to a pixel electrode, and when a difference between leakage current values of the pixel transistor when the changed luminance of the backlight unit has the maximum value and the minimum value is represented by ΔIphoto[A], one frame period is represented by Tf[sec], a pixel capacitance is represented by Cpic[F], the maximum gradient between a DC value of the common voltage and a flicker rate is represented by S[%/V], a flicker rate of the common voltage, which is adjusted so as to minimize flickering, is represented by F[%], and a standard flicker rate is represented by L[%], an expression of ΔIphoto×Tf/Cpic×S+F>L is satisfied. |
