Sharp Kabushiki Kaisha Corporation

Kenichi Hyohdoh

Fumikazu Shimoshikiryoh

Mitsuaki Hirata

Masae Kitayama

Yuki Yamashita

Ikumi Itsumi

Akane Sugisaka

Toshihide Tsubata

Toshinori Sugihara

The present invention is to provide a liquid crystal display device which hardly causes image sticking even when there is a difference in the pixel areas. The liquid crystal display device of the present invention includes a pair of substrates, and a liquid crystal layer sandwiched between the pair of substrates, and is configured such that a pixel is formed by picture elements of a plurality of colors. The liquid crystal display device of the present invention is featured in that one of the pair of substrates includes scanning lines, signal lines, and storage capacitor lines, a thin film transistor connected to each of the scanning line and the signal line, and a pixel electrode connected to the thin film transistor, in that the other of the pair of substrates includes an opposed electrode, in that the pixel electrode is arranged for each of the picture elements, and in that the pixel electrode having a larger area among the plurality of pixel electrodes arranged in one pixel is connected to the thin film transistor having a larger channel width among the plurality of the thin film transistors arranged in the one pixel.

Liquid crystal display device

A liquid crystal display device () according to the present invention has a plurality of pixels that are arranged in columns and rows to form a matrix pattern and one color display pixel (P) is comprised of four or any other larger even number of pixels. The liquid crystal display device () of the present invention includes a plurality of source bus lines () which run in a column direction. The even number of pixels that form one color display pixel (P) include larger pixels with a relatively large area and smaller pixels with a relatively small area. Each set of pixels to be supplied with a signal voltage from an associated one of the plurality of source bus lines () has substantially the same total area as any other set of pixels. According to the present invention, in a liquid crystal display device in which a plurality of pixels that forms one color display pixel includes the larger and smaller pixels, generation of display unevenness that runs in the column direction can be minimized.

A liquid crystal display device () according to the present invention includes a color display pixel D including pixels PA through PD arrayed in a matrix. The pixels PA through PD respectively include sub pixels SAthrough SDand sub pixels SAthrough SD. At least at an intermediate gray scale level, the luminance of the sub pixels SAthrough SDis higher than the luminance of the sub pixels SAthrough SD. The plurality of sub pixels S included in the pixels PA through PD are arrayed in a matrix. The sub pixel SAis adjacent to the sub pixel SBin the row direction, is adjacent to the sub pixel SCin the column direction, and is adjacent to the sub pixel SDin an oblique direction.

The present invention provides a liquid crystal display device which hardly causes image sticking in a panel in which Cgd gradation is performed, even when the pixel capacitances of the picture elements are different from one another. The liquid crystal display device of the present invention is a liquid crystal display device which includes a pair of substrates and a liquid crystal layer sandwiched between the pair of substrates, and is configured such that a pixel is formed by picture elements of a plurality of colors, wherein one of the pair of substrates includes scanning lines, signal lines, storage capacitor lines, thin film transistors connected to both of the scanning lines and the signal lines, and pixel electrodes connected to the thin film transistors; the other of the pair of substrates includes a counter electrode; the pixel electrodes are arranged for the picture elements; a scanning line and a pixel electrode form a gate-drain capacitance; the gate-drain capacitance formed by a pixel electrode with a larger pixel capacitance among the pixel electrodes arranged in one pixel is larger than the gate-drain capacitance formed by a pixel electrode with a smaller pixel capacitance among the pixel electrodes arranged in the one pixel; an overlapping area of each of the pixel electrodes overlapped with the scanning line initially increases in a travelling direction of a scanning line signal but a rate of the increase subsequently decreases, in each of the pixel electrodes respectively arranged for the picture elements of single colors; and rates of increase are different among the pixel electrodes with different pixel capacitances.

Growing community of inventors

Osaka, Japan

Kenichi Hyohdoh