Liquid crystal display device having improved-response-characteristic drivability
US6556180B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 6, 2000 |
| Grant date | Apr 29, 2003 |
| Priority date | — |
| Expiry date | Jan 25, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2340/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A liquid crystal display device in which the time necessary for luminance to change from application of a different gray-scale voltage exceeds one frame period in relation to the response as a luminance change time of the liquid crystal. The liquid crystal display device includes a signal control circuit for preventing the content of a preceding frame from being displayed as an after-image and preventing also deterioration of image quality. The signal control circuit includes a frame memory for delaying by one frame the first display data inputted from the external device, an arithmetic operation circuit for comparing the second display data stored in the frame memory and delayed by one frame with the first display data, and an addition/subtraction circuit for adding and subtracting correction data outputted by the arithmetic operation circuit to and from the first display data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.