Adjusting method of gamma voltage adjusting device
US9305502B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2013 |
| Grant date | Apr 5, 2016 |
| Priority date | — |
| Expiry date | Oct 3, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0673
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is an adjusting method of a gamma voltage adjusting device. The gamma voltage adjusting device is utilized for providing a liquid crystal panel with N gray levels and includes a printed circuit board assembly and a gamma voltage fine-tuning unit. The adjusting method of the gamma voltage adjusting device includes: generating N+2 gamma voltages with the printed circuit board assembly; inputting the N+2 gamma voltages to the gamma voltage fine-tuning unit; and generating negative polarity driving voltages and positive polarity driving voltages which are symmetrical according to the N+2 gamma voltages. The present invention decreases a number of gamma integrated circuits on the printed circuit board assembly for saving cost by decreasing the 2N gamma voltages in the prior arts to the N+2 gamma voltages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.