Increasing the number of colors output by a passive liquid crystal display
US6388647B2 · kind B2 · utility
2Cited by
12References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1997 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | Mar 5, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/2051
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A technique to increase the number of colors output by a passive color LCD display provides an increased number of grey levels for each pixel component. An M×N matrix pattern of pixel components is generated having a ratio of pixel components that are ON to the total number of pixel components to achieve a particular grey level on the passive color LCD screen, where M and N are greater or equal to two. The M×N matrix pattern is repeated for X frames, and at least one pixel component is ON in each frame. At the end of the Xth frame, the first matrix pattern for frame zero is repeated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.