Liquid crystal display having common voltages
AssigneeSamsung Electronics Co., Ltd.
InventorYun-Teak Hong
Life of this patent
Estimating the term…
Abstract
A liquid crystal display including a plurality of pixels arranged in a matrix includes a variable common voltage generator. The variable common voltage generator includes a frame memory storing image data for one frame, an average gray calculator calculating the average gray of the image data for one frame, a comparator comparing the calculated average gray from the average gray calculator with a reference gray and generating an adjusting value based on the compared result, and a D/A converter selecting a voltage having an appropriate value among a plurality of voltages generated based on the adjusting value from the comparator and applying the selected voltage as a common voltage.
Claims9
A liquid crystal display including a plurality of pixels arranged in a matrix, the display comprising:
- a gray voltage generator generating a plurality of gray voltages;
- a data driver applying data voltages selected from the gray voltages corresponding to image data to the pixels;
- a signal controller providing the image data for the data driver and generating control signals for controlling the image data, the control signals being applied to the data driver;
- and
- a common voltage generator generating at least one common voltage based on an average gray of the image data and applying the generated at least one common voltage to the pixels.
Dependencies are inferred from the claim text.