Data Driver and Liquid Crystal Display Device Including the Same
AssigneeSamsung Electronics Co., Ltd.
InventorsJae Hyuck Woo, Jae Goo Lee, Won Sik Kang
Life of this patent
Estimating the term…
Abstract
A data driver for driving a liquid crystal display (LCD) device includes a common grayscale voltage generator configured to output a plurality of common grayscale voltages, a data processing unit configured to expand externally input image data to provide expanded image data and to adjust an offset of the expanded image data to output data offset adjusted image data, and a data signal output unit configured to output as data signals a first grayscale voltage corresponding to the expanded image data and a second grayscale voltage corresponding to the data offset adjusted image data among the plurality of common grayscale voltages.
Claims15
A data driver comprising:
- a common grayscale voltage generator configured to output a plurality of common grayscale voltages;
- a data processing unit configured to expand image data to provide expanded image data and to adjust a data offset of the expanded image data to output data offset adjusted image data;
- and
- a data signal output unit configured to output data signals including a first grayscale voltage corresponding to the expanded image data and a second grayscale voltage corresponding to the data offset adjusted image data among the plurality of common grayscale voltages.
A liquid crystal display device comprising:
- a liquid crystal panel configured to display an image;
- and
- a driving unit comprising a data driver connected with the liquid crystal panel to drive the liquid crystal panel, the data driver comprising a common grayscale voltage generator configured to output a plurality of common grayscale voltages, a data processing unit configured to expand image data to provide expanded image data and to adjust a data offset of the expanded image data to output data offset adjusted image data, and a data signal output unit configured to output data signals including a first grayscale voltage corresponding to the expanded image data and a second grayscale voltage corresponding to the data offset adjusted image data among the plurality of common grayscale voltages.
A method for driving a liquid crystal display (LCD) device comprising:
- generating a plurality of common grayscale voltages;
- receiving image data from an external source;
- expanding the image data to provide expanded image data;
- adjusting a data offset of the expanded image data to output data offset adjusted image data;
- and
- outputting to the LCD device data signals including a first grayscale voltage corresponding to the expanded image data and a second grayscale voltage corresponding to the data offset adjusted image data among the plurality of common grayscale voltages.
Dependencies are inferred from the claim text.