Pixel driving circuit, driving method thereof and display apparatus
US9548024B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 18, 2013 |
| Grant date | Jan 17, 2017 |
| Priority date | — |
| Expiry date | Oct 18, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Provided are a pixel driving circuit, a driving method thereof and a display apparatus. The pixel driving circuit includes an electroluminescent element, a driving transistor, a switch unit, a charging unit, a compensation unit, a cutoff unit and a storage unit. The pixel driving circuit charges the storage capacitor by the charging unit first, and then uses the method of charging first and discharging later to make the voltage in the storage capacitor match the driving current quickly to perform fast compensation of the threshold voltage Vth, and thus make the driving current provided by the driving transistor not influenced by the threshold voltage Vth, thereby raising the consistency of the driving currents and improving the uniformity of brightness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.