Light-emitting diode displays
US10192938B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2018 |
| Grant date | Jan 29, 2019 |
| Priority date | — |
| Expiry date | Mar 12, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K59/88
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display may have an array of pixels. Display driver circuitry may supply data and control signals to the pixels. Each pixel may have seven transistors, a capacitor, and a light-emitting diode such as an organic light-emitting diode. The seven transistors may receive control signals using horizontal control lines. Each pixel may have first and second emission enable transistors that are coupled in series with a drive transistor and the light-emitting diode of that pixel. The first and second emission enable transistors may be coupled to a common control line or may be separately controlled so that on-bias stress can be effectively applied to the drive transistor. The display driver circuitry may have gate driver circuits that provide different gate line signals to different rows of pixels within the display. Different rows may also have different gate driver strengths and different supplemental gate line loading structures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.