Patent · US Active

LED-OLED hybrid self-emissive display

US11380738B2 · kind B2 · utility

0Cited by

18References

20Claims

0Family size

Assignee

HONG KONG BEIDA JADE BIRD DISPLAY LIMITED · CN

Inventors

Lei Zhang · Shanghai, CN
Qiming Li · Beijing, CN
Fang Ou · Monterey Park, US

Key dates

Filing date	Apr 12, 2018
Grant date	Jul 5, 2022
Priority date	—
Expiry date	Jun 8, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH10K2102/00
WIPO fieldSemiconductors
WIPO sectorElectrical engineering

Abstract

Inorganic and organic LEDs are integrated in a single chip. In an integrated multi-color micro-LED display panel, arrays of different color micro LEDs are integrated with corresponding driver circuitry. Some colors of micro LEDs are inorganic micro LEDs, and other colors are organic micro LEDs. Inorganic versus organic can be selected on the basis of efficiency, for example using inorganic micro LEDs for blue pixels and organic micro LEDs for red and green pixels. In one approach, an array of pixel drivers is first fabricated on a supporting substrate. Multiple strata of micro LEDs are then stacked on top of the base substrate. The strata containing inorganic micro LEDs are fabricated first, with one color per stratum. A single stratum containing all of the organic micro LEDs is then fabricated at the top of the stack.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.