Organic light emitting diode display device and driving method thereof
US9601058B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2016 |
| Grant date | Mar 21, 2017 |
| Priority date | — |
| Expiry date | May 31, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An OLED display device is disclosed which includes: a display panel configured with pixels which each include an organic light emitting diode and a driving transistor applying a driving current to the organic light emitting diode; a gate driver connected to the pixels through gate lines; a data driver configured to apply a sensing voltage to the pixels through data lines in a sensing mode and enable a sensing current to flow through each of the driving transistors; a sensing driver configured to sense threshold voltages opposite the driving currents which flow through the driving transistors; and a brightness compensation circuit configured to derive negatively shifted degrees of threshold voltages of the driving transistors from the sensed threshold voltages, detect a bright-defected pixel on the basis of the negatively shifted degrees, and generate a compensation gray value for the bright-defected pixel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.