Patent ID: 7817233
Filing Date: 2010-10-19
Classification: G02F,G09G

Abstract:
1. A liquid-crystal display device comprising: a display panel having an array substrate, a counter substrate, an OCB-mode liquid-crystal layer sandwiched between the array and counter substrates, and a viewing area formed of an array of pixels; a voltage applier that selects at least one voltage from a predetermined voltage range in response to an inputted video signal and apply a selected voltage to the OCB-mode liquid-crystal layer at each of the pixels, as to determine a luminance on the each pixel in response to the inputted video signal; wherein retardation and/or the predetermined voltage range is set for the each pixel or for the pixels in each region of the viewing area such that: the luminance on each pixel monotonously increases or decreases with increase of voltage within the predetermined voltage range; the luminance in central portion of the viewing area becomes minimum value at black displaying; and the retardation in the central portion differs from that in an end portion of the viewing area.