LED emissive image display device
US11158240B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2018 |
| Grant date | Oct 26, 2021 |
| Priority date | — |
| Expiry date | Jun 15, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/0297
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention concerns an emissive display device including: a transfer substrate including electric connection elements; and a plurality of semiconductor chips (310) fastened to the substrate and connected to the electric connection elements of the substrate for the control thereof, each chip including: a plurality of LEDs (120r, 120g, 120b); a first terminal (Vdata) of connection to the substrate intended to receive, for each LED of the chip, an individual signal (Vdatar, Vdatag, Vdatab) for setting the LED, the individual signals for setting the different LEDs of the chip being temporally multiplexed on said first terminal (Vdata); and a control circuit capable of demultiplexing the signals received on said first terminal and of applying to each LED of the chip a bias signal which is a function of the individual LED setting signal received on said first terminal (Vdata).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.