Backplane suitable to form part of an emissive pixel array and system and methods of modulating same
US10629153B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 5, 2018 |
| Grant date | Apr 21, 2020 |
| Priority date | — |
| Expiry date | Oct 5, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2300/0857
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A backplane operative to drive an array of emissive pixel elements is disclosed. Each pixel element comprises a pixel circuit drive element and an emissive element, wherein the pixel circuit drive element comprises a memory cell, a current source element, and a modulation element. The present invention improves 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 realize the backplane in a single crystal silicon process with a minimum number of metal layers while providing each color with a suitable operating voltage and drive current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.