Erasing unit for image sticking, control method thereof, and liquid crystal display device
US11341930B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 14, 2018 |
| Grant date | May 24, 2022 |
| Priority date | — |
| Expiry date | Dec 5, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/027
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Embodiments of the present disclosure provide an erasing unit for image sticking in a liquid crystal display device, a control method thereof and a liquid crystal display device. A first controlling signal may be generated by dividing a voltage at a DC power supply terminal. A controlling circuit may output a second controlling signal and a third controlling signal in responding to the voltage of the first controlling signal being smaller than or equal to a reference voltage. A charging and discharging circuit may discharge under the control of the second controlling signal and output a high-level voltage signal to an outputting circuit. The outputting circuit may supply the high-level voltage signal outputted by the charging and discharging circuit to TFTs in the liquid crystal display device, controlling the TFTs to be turned on.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.