Source voltage removal detection circuit and display device including the same
US7825919B2 · kind B2 · utility
7Cited by
11References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 3, 2005 |
| Grant date | Nov 2, 2010 |
| Priority date | — |
| Expiry date | Nov 17, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/027
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A control signal for removal of an afterimage from an active matrix display device is generated after the removal or disconnect of power from the device. A detector circuit receives a first voltage from a first voltage source and a second voltage from a second voltage source, and outputs a detection signal when either one of the first and second voltages drops to a given voltage level. An output circuit which receives the detection signal and outputs the control signal for removal of the afterimage from the active matrix display device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.