Driving voltage supply circuit, display panel, and display device
US10964266B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 13, 2019 |
| Grant date | Mar 30, 2021 |
| Priority date | — |
| Expiry date | Aug 13, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/028
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A drive voltage supply circuit, a display panel, and a display device are provided. By supplying a drive voltage lower than a drive voltage for display driving in a period in which sensing deterioration of an organic light emitting diode disposed in each sub pixel, an operating voltage of the organic light emitting diode is kept constant and a degree of deterioration of the organic light emitting diode can be accurately sensed. By discharging the drive voltage supplied to the display panel and controlling a current flowing in the process of discharge before supplying the drive voltage for deterioration sensing, drive voltages of different levels can be stably supplied in a display driving period and a deterioration sensing period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.