DISPLAY DEVICE, ELECTRONIC APPARATUS AND METHOD OF DRIVING DISPLAY DEVICE

摘要

The signal processing unit 20 includes a pixel index value calculating unit that calculates a pixel index value based on an input signal for each pixel 48, a chunk determining unit that performs consecutiveness determination which determines whether or not a pixel 48, having a pixel index value between an upper boundary value and a lower boundary value is consecutive from the starting pixel, and determines consecutive pixels as a chunk, a chunk index value calculating unit that calculates a chunk index value, a region index value calculating unit that calculates a region index value of a target region, and a light irradiation amount deciding unit that compares the chunk index value with the region index value, and decides the irradiation amount of the light of the light source unit in the target region based on the one by which the irradiation amount of the light is increased.

主权项

1. A display device, comprising:
an image display panel including a plurality of pixels arranged in a matrix form; a light source unit that irradiates the image display panel with light; and a signal processing unit that controls the pixels based on an input signal of an image, and controls an irradiation amount of light of the light source unit, wherein the signal processing unit includes a pixel index value calculating unit that calculates a pixel index value serving as an index for obtaining the irradiation amount of the light emitted from the light source unit based on the input signal for each pixel, a chunk determining unit that performs consecutiveness determination which determines whether or not a pixel, having a pixel index value between an upper boundary value larger than a pixel index value of a starting pixel and a lower boundary value smaller than the pixel index value of the starting pixel, is consecutive from the starting pixel, and determines a region of consecutive pixels as a chunk, a chunk index value calculating unit that calculates a chunk index value serving as an index value of the chunk based on the pixel index values of the pixels of the chunk, a region index value calculating unit that calculates a region index value serving as an index value of an entire target region based on the pixel index values of all the pixels of the target region, and a light irradiation amount deciding unit that compares the chunk index value with the region index value, and decides the irradiation amount of the light of the light source unit in the target region based on one of the chunk index value and the region index value by which the irradiation amount of the light is increased.