Back to results
US 7,466,297 B2Granted
Method for driving a TFT-LCD
AssigneeHannstar Display Corp.
InventorFeng-Ting Pai
Life of this patent
Estimating the term…
Abstract
A method for driving a TFT-LCD, includes first applying a bias voltage to a pixel so the gray level displayed by the pixel changes from an initial gray level to a baseline gray level. A target gray level voltage is then converted to a corresponding over-drive gray level voltage. Subsequently, the over-drive gray level voltage is applied to the pixel so the gray level displayed by the pixel changes from the baseline gray level to the target gray level.
Claims20
A method for driving a TFT-LCD, the TFT-LCD including a plurality of pixels arranged in a number of rows wherein the method comprises:
- between a previous frame image and a next frame image, applying a common bias voltage to all pixels in each said row so that gray levels of said pixels respectively change from different initial gray levels of the previous frame image to a same baseline gray level;
- based on the same baseline gray level, converting target gray level voltages for the next frame image to corresponding over-drive gray level voltages;
- and applying the over-drive gray level voltages to said pixels so that the gray levels of said pixels change from the same baseline gray level to corresponding target gray levels in the next frame image.
A TFT-LCD, comprising:
- a panel including a plurality of pixels arranged in a number of rows;
- a bias source for applying, between a previous frame image and a next frame image, a common bias voltage to all pixels in each said row so that gray levels of said pixels respectively change from different initial gray levels of the previous frame image to a same baseline gray level;
- a timing controller for converting, based on the same baseline gray level, target gray level voltages for the next frame image to corresponding over-drive gray level voltages;
- and a source driver for applying the over-drive gray level voltages to said pixels so that the gray levels of said pixels change from the same baseline gray level to corresponding target gray levels in the next frame image.
1 more element
Dependencies are inferred from the claim text.