Method and apparatus for driving reflective bistable cholestric displays
US8508448B2 · kind B2 · utility
0Cited by
11References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2005 |
| Grant date | Aug 13, 2013 |
| Priority date | — |
| Expiry date | Jan 25, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/063
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
This invention provides a method and apparatus for driving bistable cholesteric liquid crystal displays. The method and apparatus provided a display in which all the pixels are initially driven to the P state. Selected pixels for the display are then driven to the FC state to provide the desired message. The state of the pixels is then maintained for a viewing period prior to any resetting of the display to the P state. The switching from the P state to the FC state allows fast addressing times and lower voltages to be used in driving the display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.