Organic light-emitting display device
US11114028B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2019 |
| Grant date | Sep 7, 2021 |
| Priority date | — |
| Expiry date | Dec 16, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure provides a display device capable of determining the characteristics of the light emitting diode without having to consider various factors dependent upon the manufacturing process. The light emitting diode includes an internal resistor and a parasitic capacitor. The light emitting diode is connected to a sensing circuit including an integrator that has a sensing resistor and a feedback capacitor. Based on a first sensing of a pixel along a first sensing path and a second sensing of the pixel along the second sensing path, the sensing circuit senses a first charge amount from the first sensing path and a second charge amount from the second sensing path. The characteristics of the light emitting diode can be determined by dividing the first charge amount and the second charge amount, which is based on the ratio of the sensing resistor and the internal resistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.