Pixel circuit, display device, and method for driving same
US12159582B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 19, 2021 |
| Grant date | Dec 3, 2024 |
| Priority date | — |
| Expiry date | Jan 19, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present application discloses a display device, such as an organic EL display device, which is of a current-driven type and is capable of displaying a satisfactory image free from perceivable flickering across all areas of the image even when pause drive is performed. Each pixel circuit is provided with a bias supply circuit 151, which includes a bias retention capacitor Cbs and a bias control transistor T8 connected in series with each other. In a pause drive mode, emission control lines and bias control lines are driven during both drive and pause periods. The bias control transistor is controlled through the bias control line such that in the drive period, a voltage of a data signal line Dj is written to a data retention capacitor Cst and simultaneously to the bias retention capacitor Cbs, whereas in the pause period, the voltage written in the bias retention capacitor Cbs is applied to a source terminal of a drive transistor during an on-bias application period within a non-emission period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.