Gradation voltage generator and display device having the same
US9019321B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 21, 2011 |
| Grant date | Apr 28, 2015 |
| Priority date | — |
| Expiry date | Jul 20, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0673
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Embodiments may be directed to a gradation voltage generator and a display device having the same. The display device may include a gradation voltage generator including a first reference voltage selecting unit, which selects a highest reference voltage, a second highest reference voltage, a lowest reference voltage, and a second lowest reference voltage from among a plurality of first voltages between a first power voltage and a second power voltage; a second reference voltage selecting unit, which receives the highest reference voltage and the lowest reference voltage and selects and outputs a first gradation voltage and a N−1th gradation voltage; a gamma voltage selecting unit, which receives the second highest reference voltage and the second lowest reference voltage and generates a plurality of gamma voltages; and a gradation distributing unit, which receives the plurality of gamma voltages and generates second through N−1th gradation voltages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.