Patent ID: 8749467
Filing Date: 2014-06-10
Classification: G09G

Abstract:
1. A liquid crystal display device, comprising: a liquid crystal panel that displays images using a plurality of pixels each pixel including red, green, and blue sub-pixels; a gate driving portion that supplies a gate signal to the liquid crystal panel; a data driving portion that supplies a data signal to the liquid crystal panel; and a timing control portion that compares differences of gray levels between image signals corresponding to the red, green, and blue sub-pixels with a first threshold value and compares differences of gray levels between the image signals corresponding to the red, green, and blue sub-pixels of neighboring pixels of the plurality of pixels with a second threshold value in order to judge a type of the image signals, and drives the data driving portion in different methods according to the type of the image signals, wherein the timing control portion includes: wherein when the red, green, and blue sub-pixels of the neighboring pixels are Rn−1, Gn−1, and Bn−1, and Rn, Gn, and Bn, respectively, and wherein the pattern recognition portion judges as the first pattern the type of the image signals that meet a first condition ([|gray level of (Rn)−gray level of (Gn)|≦first threshold value] & [|gray level of (Gn)−gray level of (Bn)|≦first threshold value] & [|gray level of (Bn)−gray level of (Rn)|≦first threshold value]), and a second condition ([|gray level of (Rn−1)−gray level of (Rn)|≧second threshold value] & [|gray level of (Gn−1)−gray level of (Gn)|≧second threshold value] & [|gray level of (Bn−1)−gray level of (Bn)|≧second threshold value]), and judges as the second pattern the type of the image signals that do not meet the first and the second conditions.