Pixel circuit having threshold voltage compensation and method for driving the same
US9355597B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 26, 2013 |
| Grant date | May 31, 2016 |
| Priority date | — |
| Expiry date | Oct 25, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/043
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure relates to a field of display technology, and particularly to a pixel circuit and a method for driving the same. The pixel circuit includes a driving sub-circuit, a resetting sub-circuit, and a charging sub-circuit, wherein the driving sub-circuit includes a driving transistor, a first transistor, a third transistor, a first storage capacitor and a second storage capacitor; the resetting sub-circuit discharges the first storage capacitor and the second storage capacitor under the control of a first scan signal outputted from the first scan signal line; and the charging sub-circuit includes a fifth transistor and a sixth transistor. With the pixel circuit of the present disclosure, non-uniformity of driving transistors caused by threshold voltages of the driving transistors and an image sticking phenomenon caused by drifts of the threshold voltages of the driving transistors may be eliminated through the compensation; and the problem of non-uniform luminance among the light emitting devices in different pixel units of an Active Matrix Organic Light Emitting Diode Display caused by different threshold voltages of the driving transistors in the different pixel u…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.