Pixel driving circuit, method for driving the same, shift register, display panel and display device
US9990887B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 1, 2016 |
| Grant date | Jun 5, 2018 |
| Priority date | — |
| Expiry date | Mar 1, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/043
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A pixel driving circuit is provided. The pixel driving circuit includes a driving transistor (M1), a storage capacitor (Cs) and a data writing unit. The data writing unit is configured to receive an nth-row scanning signal (Vscan (n)) and apply the data voltage (Vdata) to the gate electrode of the driving transistor (M1) in the case that the nth-row scanning signal (Vscan (n)) is valid. The pixel driving circuit further includes: a reverse control unit, receiving an (n−2)th-row scanning signal (Vscan (n−2)) and connected to the cathode of the OLED, and configured to control the cathode of the OLED to receive the (n−2)th-row scanning signal (Vscan (n−2)) in the case that the (n−2)th-row scanning signal (Vscan (n−2)) is valid. A voltage of the (n−2)th-row scanning signal (Vscan (n−2)) is greater than the driving voltage (Vdd), and n is an integer greater than 2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.