LCD and drive method thereof

摘要

This invention relates to a liquid crystal display device and its driving method for improving a visual picture quality. A liquid crystal display device according to an embodiment includes a liquid crystal display panel where plural pixels composed of sub-pixels arranged in a fixed pattern are arranged by the unit of one horizontal line; a timing controller for controlling the gray level realization of digital data inputted from a system; and a data drive circuit that differently realigns a data pattern of the digital data by the unit of one horizontal line for each k horizontal period, that converts the digital data of the realigned data pattern into analog data voltages, and that makes the analog data voltages, which are buffered in accord with the realigned data pattern, in accord with an arrangement pattern of the sub-pixels constituting each pixel to supply the analog data voltages to each pixel.

主权项

1. A data drive circuit of a liquid crystal display device, comprising:
a controller that differently realigns an RGB data pattern of digital RGB data, which are in series input thereto, by a unit of one horizontal line for each k horizontal period, wherein the k horizontal period is an amount of time it takes to scan k horizontal lines; a latch part that latches the digital RGB data of the pattern realigned by the controller; first to mth (m≧2) A/D converters that convert the digital RGB data, which are latched in accord with the RGB data pattern realigned by the controller, into analog data voltages; first to mth (m≧2) output buffers that buffer the analog data voltages which are converted in accord with the RGB data pattern realigned by the controller; an output controller that controls the analog data voltages, which are buffered in accord with the RGB data pattern realigned by the controller, to be outputted in accord with an arrangement pattern of sub-pixels which constitute each pixel; and first to mth (m≧2) switches that supply the analog data voltages, which are buffered in accord with the RGB data pattern realigned by the controller, to each pixel by making the analog data voltages in accord with the arrangement pattern of the sub-pixels which constitute each pixel, under the control of the output controller.