Liquid crystal display and driving method thereof

摘要

Provided is a liquid crystal display for improving side visibility by calculating a representative value for image data and correcting at least one of a storage voltage Vcst, a reference voltage Vref, and a lookup table LUT according to the calculated representative value. Further, a histogram analysis block is formed inside or outside a signal controller and corrects at least one of the storage voltage Vcst, the reference voltage Vref, and the lookup table LUT based on the histogram analysis block.

主权项

1. A liquid crystal display comprising:
a display panel connected to a gate line and a data line and including a pixel receiving a storage voltage; a data driver connected to the data line and applying a data voltage to the data line; a gate driver connected to the gate line and applying a gate voltage to the gate line; a gray voltage generator connected to the data driver and generating a gray voltage based on a reference voltage; a driving voltage generator generating a driving voltage; a signal controller controlling the data driver, the gate driver, and the driving voltage generator and correcting input image data with reference to a lookup table; and a histogram analysis block histogram-analyzing the image data during one frame and changing at least one of the storage voltage, the reference voltage, and the lookup table, wherein the driving voltage generator includes a digital variable resistor generating the storage voltage; and a reference voltage generator generating the reference voltage, and, wherein the histogram analysis block transfers an output signal to the digital variable resistor and the reference voltage generator and changes the storage voltage and the reference voltage.