Emissive pixel array and self-referencing system for driving same
US10692433B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 2, 2019 |
| Grant date | Jun 23, 2020 |
| Priority date | — |
| Expiry date | Jul 2, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/028
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention is to improve on an emissive display by providing a backplane and modulation system that enables fabrication of multi-color or monochrome LED display systems that operate efficiently and without objectionable image artifacts. One aspect of the present invention is to implement the backplane of an emissive display that offers high precision across an array of pixels and extremely low variation. The present invention uses a large L FET to generate a reference current and then uses the same large L FET to act as a current source mirroring the reference current, thereby ensuring a substantially perfect match between reference current FET and current source FET.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.