Liquid crystal display device, compensation circuit and TFT voltage shutdown method thereof
US9052539B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2013 |
| Grant date | Jun 9, 2015 |
| Priority date | — |
| Expiry date | Aug 25, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/027
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a liquid crystal display device, compensation circuit and TFT voltage shutdown method. The compensation circuit includes first capacitor, first resistor, second resistor and operational amplifier; wherein first terminal of first capacitor connected to receiving terminal of gate driver of LCD for receiving shutdown voltage to shutdown TFT; first terminal of first resistor connected to second terminal of first capacitor; first terminal of second resistor connected to second terminal of first resistor and second terminal of second resistor connected to output terminal of operational amplifier; positive input terminal of operational amplifier receiving an externally supplied shutdown voltage for gate driver, and negative input terminal of operational amplifier connected to second terminal of first resistor; wherein connection between first capacitor and receiving terminal of gate drive independent from connection between output terminal of operational amplifier and receiving terminal of gate driver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.