Display device and display control method

摘要

Provided is a display device capable of reducing a visually unpleasant sensation experienced by a user. This display device includes a display panel displaying a video picture, a backlight unit disposed on a back surface of the display panel and including a light sources for each region obtained by dividing the display panel into regions, a region characteristic amount detection unit detecting a characteristic amount of an image of each of the divided regions, a full screen characteristic amount detection unit detecting a characteristic amount of an image of the overall display panel, a region brightness determination unit determining an emission brightness of the respective light sources corresponding to each of the regions based on the detected characteristic amount, and the detected characteristic amount of the image of the overall display panel, and a backlight drive unit driving the respective light sources to emit light at the determined emission brightness.

主权项

1. A display device, comprising:
a display panel which displays an image; a backlight unit which is disposed on a back surface of the display panel, and which includes a plurality of light sources for each region obtained by dividing the display panel into a plurality of regions; a first detection unit which detects, for an image of each of the divided regions, an average value of brightness, a maximum value of brightness, and a color area of a specific color, as a characteristic amount of the image of each of the divided regions; a second detection unit which detects, for an image of the overall display panel, a variance value of brightness, as a characteristic amount of the image of the overall display panel; and a drive unit which determines an emission brightness of each of respective light sources, of the plurality of the light sources corresponding to each of the regions, based on the characteristic amount of the image of each region that is detected by the first detection unit, and the characteristic amount of the image of the overall display panel that is detected by the second detection unit, and drives each of the respective light sources to emit light at the determined emission brightness, and wherein the drive unit includes:
a first determination unit which determines whether the variance value of brightness of the image of the overall display panel that is detected by the second detection unit is a first value or higher;a first emission brightness determination unit which determines a brightness according to the color area of the specific color that is detected by the first detection unit as the emission brightness of each of the respective light sources, when the first determination unit determines that the variance value that is detected by the second detection unit is the first value or higher;a second determination unit which determines whether the variance value of brightness of the image of the overall display panel that is detected by the second detection unit is a second value, which is smaller than the first value, or less, when the first determination unit determines that the variance value that is detected by the second detection unit is smaller than the first value;a second emission brightness determination unit which determines the average value of brightness that is detected by the first detection unit as the emission brightness of the respective light sources, when the second determination unit determines that the variance value that is detected by the second detection unit is the second value, or less; anda third emission brightness determination unit which determines the maximum value of brightness that is detected by the first detection unit as the emission brightness of each of the respective light sources, when the second determination unit determines that the variance value that is detected by the second detection unit is smaller than the first value and greater than the second value.