Display device and method for driving same
US11398187B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 28, 2018 |
| Grant date | Jul 26, 2022 |
| Priority date | — |
| Expiry date | Mar 28, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/028
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure discloses a current-driven display device that uses an internal compensation method and can display a good-quality image with no bright dots that are not included in intended display content. In a pixel circuit of an organic EL display device, a gate voltage of a drive transistor is initialized before the voltage of a data signal line is written to a holding capacitor via the diode-connected drive transistor. A first initialization voltage line for initialization of the gate voltage and a second initialization voltage line for initialization of an anode voltage of the organic EL element are connected to the pixel circuit. In the initialization of the gate voltage, a voltage of the first initialization voltage line that is higher than the voltage of the second initialization voltage line is provided to the gate terminal of the drive transistor via the first initialization transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.