Liquid crystal display device and driving method of the same improving afterimage problem due to image data of black level

摘要

A liquid crystal display device includes a liquid crystal panel; a gamma voltage supplying unit establishing a gamma voltage corresponding to each gray level according to a predetermined T-V curve; and a data driving unit changing digital image data into analog image data using the gamma voltage and outputting the analog image data to the liquid crystal panel, wherein the gamma voltage corresponding to a black level is configured to have a value within a range of 0 V to 0.005 V.

主权项

1. A liquid crystal display device, comprising:
a liquid crystal panel; a gamma voltage supplying unit configured to establish a gamma voltage corresponding to each gray level according to a predetermined T-V curve; and a data driving unit configured to change digital image data into analog image data using the gamma voltage and output the analog image data to the liquid crystal panel, wherein the gamma voltage corresponding to a black level is configured to have a value within a range of 0 V to 0.005 V, and wherein the gamma voltage corresponding to a first gray level that is a next level to the black level is configured to have a value within a range in which luminance increases after a gray inversion that the luminance increases and then decreases between 0.35V of a pixel voltage and 0.45V of the pixel voltage in the predetermined T-V curve as the pixel voltage continuously increases, and the gray inversion occurs between the black level and the first gray level.