Hitachi Displays, Ltd.

Panasonic Liquid Crystal Display Co., Ltd.

Japan Display Inc.

Shisei Katou

Yoshihiro Imajo

Yoshihisa Ooishi

Ikuko Mori

Kenta Endo

Ikuo Hiyama

Masahiro Ishii

Yoshiro Mikami

Ryutaro Oke

Masafumi Hirata

Kentaro Ojima

Chiharu Kawaguchi

In a liquid crystal display device, the reduction of power consumption is realized by reddening a backlight while maintaining a white balance. An aperture ratio of a red subpixel and an aperture ratio of a blue subpixel are set such that, in a state where an aperture ratio of a green subpixel in each pixel of a liquid crystal panel is fixed to a desired value, white brightness efficiency takes a maximum value which is set based on a balance between light emission efficiency which is increased corresponding to lowering of a color temperature of the backlight and transmissivity of the pixel which is decreased corresponding to the increase of the aperture ratio of the blue subpixel.

Liquid crystal display device with red, green and blue subpixels having different aperture ratios

The present invention provides a display device which displays a black image by periodically inserting the black image, wherein after the display of the black image, a first period in which a video signal different from a video signal for the black image is outputted to video signal lines is made different from a succeeding period in length.

Display device

The present invention prevents a TFT liquid crystal display device from deteriorating its image quality due to the insufficiency of voltage written through TFTs. There is disclosed a display device that includes a display panel in which the plural pixel electrodes are positioned between two neighboring video signal lines and arranged in the extending direction of the video signal lines, a pixel electrode connected to one of the two neighboring video signal lines through a TFT and a pixel electrode connected to the other video signal line through a TFT being alternately arranged; and a correction circuit that compares the tone of video data to be written into one of the plural pixel electrodes against the tone of video data to be written into a preceding pixel electrode that is connected through a TFT to the video signal line, to which the one of the plural pixel electrodes is also connected through a TFT, and placed one position toward a signal input end of the video signal line as compared to the one of the plural pixel electrodes, and corrects the video data to be written into the one of the plural pixel electrodes.

Display device with tone correction circuit

In a display device which displays a black image by periodically inserting a black image, after the display of the black image, a first period in which a video signal different from a video signal for the black image is outputted to video signal lines is made different from a succeeding period in length.

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Mobara, Japan

Shisei Katou