Architecture for hybrid TFT-based micro display projector
US11239399B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2019 |
| Grant date | Feb 1, 2022 |
| Priority date | — |
| Expiry date | Oct 22, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/853
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
For small, high-resolution, light-emitting diode (LED) displays, such as for a near-eye display in an artificial-reality headset, LEDs are spaced closely together. A backplane can be used to drive an array of LEDs in an LED display. A plurality of interconnects electrically couple the backplane with the array of LEDs. As spacing between LEDs becomes smaller than interconnect spacing, a thin-film circuit layer can be used to reduce a number or interconnects between the backplane and the array of LEDs, so that interconnect spacing can be larger than LED spacing. This can allow LEDs in the LED display to be more densely arranged while still allowing use of a silicon backplane with drive circuitry to control operation of the LEDs in the LED display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.