Gamma voltage generation circuit
US8605122B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 19, 2010 |
| Grant date | Dec 10, 2013 |
| Priority date | — |
| Expiry date | May 8, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/027
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A gamma voltage generation circuit is provided. The gamma voltage generation circuit includes a plurality of resistor strings, a plurality of second resistors and a plurality of switches. Each of the resistor strings has a plurality of first resistors connected in series. Each of ends of the first resistors provides a gamma reference voltage. Each of second resistors is connected in series with the resistor strings. Each of the switches is coupled to a corresponding one of the resistor strings, selects and outputs one of the gamma reference voltages provided by the ends of the first resistors of the corresponding one of the resistor strings according to a control signal. Therefore, levels of the gamma voltages can synchronously displaced, so that the effects presented by pixels with different common voltage levels are similar or equal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.