Temperature compensation circuit and method for a display panel and display panel
US10388226B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2017 |
| Grant date | Aug 20, 2019 |
| Priority date | — |
| Expiry date | Nov 23, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/041
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A temperature compensation circuit and method for a display panel and a display panel are provided. The display panel includes a control circuit, a driving circuit, a detection circuit and a pixel circuit; wherein the detection circuit is configured to obtain a current threshold voltage of a transistor of the pixel circuit, the control circuit obtains a current voltage difference between the current threshold voltage and an initial threshold voltage, obtains a current compensation gain matching the current voltage difference according to a predetermined related data of a voltage difference and a compensation gain, and controls the driving circuit to drive the pixel circuit by using the current compensation gain. By practice of the disclosure, the temperature compensation for a display panel could be achieved without the additional temperature sensor, so the service life of the display panel could be extended.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.