Patent ID: 7737963
Filing Date: 2010-06-15
Classification: G09G

Abstract:
1. A liquid crystal display comprising: a reference voltage generator changing a level of a first predetermined voltage based on a first signal to generate a reference voltage, the first signal varying depending on one of brightness of surroundings of the liquid crystal display, brightness of on-screen images of the liquid crystal display, and a user's manipulation; a gray voltage generator generating a plurality of gray voltages with magnitudes depending on a magnitude of the reference voltage; a gate driver supplying gate signals to a plurality of gate signal lines; a data driver selecting the gray voltages based on gray data from an external source to supply to a plurality of data signal lines; and a signal generator determining the brightness of the on-screen images from the gray data and generating the first signal depending on the brightness or the user's manipulation, wherein the signal generator comprises: a square wave generator calculating representative value of gray data from an external source and generating a wave signal depending on the representative value of the gray data; and