Cholesteric liquid crystal display device and display driver
US7138973B2 · kind B2 · utility
5Cited by
8References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2002 |
| Grant date | Nov 21, 2006 |
| Priority date | — |
| Expiry date | Nov 20, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0223
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display driver is provided which is suitable for driving dynamically a cholesteric liquid crystal display panel of a passive matrix drive type. The driver comprises a shift register for shifting a row data or column data inputted to the driver, a data latch circuit for latching the row data or column data from the shift register, and a drive voltage select/output circuit for selecting at least one of a plurality of voltage supplies and outputting a row drive voltage or column drive voltage to form an alternated drive voltage which activates picture elements of the liquid crystal panel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.