LCD driving apparatus and method
US8692824B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2008 |
| Grant date | Apr 8, 2014 |
| Priority date | — |
| Expiry date | Dec 31, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0233
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention discloses a driving apparatus for driving an LCD. The driving apparatus comprises a voltage control unit, an operating unit, a resistance unit, and a voltage selection unit. The operating unit comprises two sets of buffers formed by a plurality of operational amplifiers in negative feedback circuit. The two sets of buffers selectively receive positive polarity voltages and negative polarity voltages respectively. The voltage selection unit is provided with the positive polarity voltages and negative polarity voltages through the operating unit and the resistance unit. The voltage selection unit selectively provides the pixels of the LCD with the positive polarity voltage and the negative polarity voltage. Accordingly, each of the pixels is provided either with the positive polarity voltages or the negative polarity voltages by one of the two sets of buffers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.