Low-power column driving method for liquid crystal display
US6650310B2 · kind B2 · utility
5Cited by
2References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 28, 2001 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Apr 10, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/023
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A hybrid-level charge recycling method for use in implementing low power LCD column drivers. By having external capacitors of the column driver drive the same column lines of the LCD, the need for a polarity reversing circuit is eliminated, and the time necessary for charge recycling, as well as the amount of power consumed, is reduced. As a result, the multi-level recycling operation in column driving IC is made more practical.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.