Patent ID: 9286842
Filing Date: 2016-03-15
CPC Classification: G09G

Claim Text:
1. A liquid crystal display device, comprising: a plurality of OCB liquid crystal pixels which are arrayed substantially in a matrix and which include red, green and blue color filters; a driver circuit which cyclically writes a non-video signal and a video signal as a pixel voltage in each of said liquid crystal pixels; and a control circuit which controls an operation timing of said driver circuit, wherein said control circuit is configured to set, in one frame period, a first period shorter than the frame period and a second period shorter than the frame period and partly overlapping the first period, and is configured to control the driver circuit to execute write of a black-level non-video signal for all of said liquid crystal pixels in the first period within a single frame period, to execute write of the video signal for all of said liquid crystal pixels in the second period within the single frame period, and to alternately execute the write of the non-video signal and the write of the video signal in units of one or more horizontal periods in an overlapping part of the first period and the second period, and is configured to reverse a polarity of the pixel voltage to the plurality of liquid crystal pixels in at least any one of column reverse and frame reverse and wherein a period from a start of the write of non-video signal to completion of the write of the video signal is equal to or shorter than the single frame period.