Pixel driver circuit and driving method thereof
US10311794B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2017 |
| Grant date | Jun 4, 2019 |
| Priority date | — |
| Expiry date | Nov 16, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/043
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention discloses a pixel driver circuit and driving method thereof. The pixel driver circuit comprises a first TFT (T1) connected to first node (G) and second node (K); a second TFT (T2), connected to first control signal (S1), first node (G) and second node (K); a third TFT (T3), connected to second control signal (S2) and second node (K); a fourth TFT (T4), connected to first control signal (S1), third node (N) and reference voltage (Vref); a fifth TFT (T5), connected to first control signal (S1), third node (N) and data signal (Vdata); a sixth TFT (T6), connected to third control signal (S3); a first capacitor (C1) and a second capacitor; the reference voltage (Vref) being less than data signal Vdata). The invention also provides a corresponding driving method. The invention uses internal detection to eliminate luminance inconsistency caused by change of the driving TFT threshold voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.