Pixel circuit in an electroluminescent display
US10475371B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 22, 2017 |
| Grant date | Nov 12, 2019 |
| Priority date | — |
| Expiry date | Aug 15, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K59/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A circuit includes an electroluminescent (EL) device, a transistor, a first capacitor and a second capacitor. The transistor includes a gate coupled to a first node and a first terminal coupled to a second node. The first capacitor is coupled between a supply voltage and the first node. The second capacitor is coupled between the first node and the second node. The first capacitor and the second capacitor are configured to establish a compensation voltage associated with a threshold voltage of the transistor at the gate of the transistor in response to a first control signal, and establish the compensation voltage at the first terminal of the transistor in response to a second control signal. The transistor is configured to pass a current through the EL device. Moreover, the current has a magnitude independent of the threshold voltage of the transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.