Bistable chiral nematic liquid crystal display and method of driving the same
US6928271B2 · kind B2 · utility
5Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2002 |
| Grant date | Aug 9, 2005 |
| Priority date | — |
| Expiry date | Oct 10, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2300/0486
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A cholesteric liquid crystal display has pixel address circuits (84) with an input (12) for receiving a data signal and a plurality of outputs, wherein each output is for applying a pixel drive signal to a respective portion of the liquid crystal material (20), and wherein the pixel drive signal for each output is independently switchable by the pixel address circuit to each output. This provides spatially-separated sub-pixels, and a number of the sub-pixels can be addressed in order to provide a grey scale output for each pixel. Each pixel drive signal can however be a two-level digital signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.