Light emitting display device and method for driving the same
US10297192B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2017 |
| Grant date | May 21, 2019 |
| Priority date | — |
| Expiry date | Sep 20, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A light emitting display device and a method for driving the same are disclosed, in which a source voltage of a driving transistor for compensating for degradation of a light emitting element may be prevented from getting out of a sensing voltage range of an analog-to-digital converter. The light emitting display device comprises a display panel connected to data lines, scan lines and reference voltage lines and provided with pixels, each pixel including a light emitting element; an analog-to-digital converter (ADC) converting voltages sensed from the pixels through the reference voltage lines into sensing data; and a voltage supply unit supplying a reference voltage to the reference voltage lines. The voltage supply unit supplies a third low voltage and a third high voltage to the ADC in a degradation compensation mode for compensating for degradation of the light emitting element. In the degradation compensation mode, the reference voltage is equal to or higher than the third low voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.