DISPLAY CONTROL CIRCUIT, LIQUID CRYSTAL DISPLAY DEVICE INCLUDING THE SAME, AND DISPLAY CONTROL METHOD

摘要

An object of the present invention is to suppress a reduction in image quality caused by crosstalk in a liquid crystal display device capable of performing 3D display. A predetermined number of pixels (e.g., pixels of two rows×two columns) having the same gray scale value are divided into pixels (first pixel group) whose post-correction gray scale values are the same between a left-eye image and a right-eye image, and pixels (second pixel group) whose post-correction gray scale values are different between the left-eye image and the right-eye image. For example, an average value between a pre-correction gray scale value of the left-eye image and a pre-correction gray scale value of the right-eye image is a post-correction gray scale value of the first pixel group. The post-correction gray scale values of the second pixel group are determined such that, for both of the left-eye image and the right-eye image, an average gray scale value of each group including the predetermined number of pixels is not changed between before and after the correction.

主权项

1. A display control circuit that generates write gray scale data to be provided to a display device, based on an image signal including left-eye gray scale data and right-eye gray scale data, the display device displaying a 3D image by alternately displaying a left-eye image and a right-eye image, the display control circuit comprising:
a gray scale correction circuit that corrects the image signal such that an average gray scale value of each of groups is not changed between before and after the correction, each group including a predetermined number of pixels adjacent to each other, and the pixels having a same gray scale value indicated by the left-eye gray scale data and having a same gray scale value indicated by the right-eye gray scale data; and an overshoot drive circuit that generates the write gray scale data by performing correction on the image signal corrected by the gray scale correction circuit, to emphasize a temporal change of the signal, wherein the gray scale correction circuit divides the predetermined number of pixels included in each group into a first pixel group and a second pixel group, and corrects the image signal such that a post-correction gray scale value for the left-eye gray scale data and a post-correction gray scale value for the right-eye gray scale data are equal to each other for at least the first pixel group.