Light emitting drive circuit and organic light emitting display
US10262593B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2017 |
| Grant date | Apr 16, 2019 |
| Priority date | — |
| Expiry date | Apr 29, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/045
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure provides a light emitting drive circuit and an organic light emitting display. The circuit includes: the reset memory module for resetting the driving module and for generating and storing a threshold offset voltage corresponding to the driving module; the driving module is used for generating a light emission drive voltage in a light emission phase in accordance with a power supply positive voltage, a stored threshold compensation voltage, and a light emission control signal; the light emitting module is configured to emit light, and the light emission driving voltage is a difference between the power supply positive voltage and the data voltage. The driving voltage (or drive current) of the light emission is independent of the threshold voltage for driving the thin film transistor. This eliminates the problem that the threshold voltage drift of the driving thin film transistor causes the screen display to be poor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.