Patent · US Active

Apex angle reduction in a LED device with a LED array

US11005016B2 · kind B2 · utility

0Cited by

1References

18Claims

0Family size

Assignee

IMEC VZW · BE

Inventors

Soeren Steudel · Oud-Heverlee, BE
Zsolt Tokei · Leuven, BE
Paul Heremans · Leuven, BE

Key dates

Filing date	Dec 6, 2019
Grant date	May 11, 2021
Priority date	—
Expiry date	Dec 6, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH10H20/833
WIPO fieldSemiconductors
WIPO sectorElectrical engineering

Abstract

A Light Emitting Diode (LED) device, particularly a micro-LED (μLED) device, suitable for a μLED display is described. The LED device comprises a LED array with a plurality of LEDs 12. It also comprises at least one top contact and bottom contact electrically connected to the LED array. Further, it comprises a conductive structure arranged above the LED array and the top contact, respectively, and electrically connected to the top contact. The conductive structure is, regarding each LED of the LED array, configured to absorb a first part of the light emitted by the LED, and to pass a second part of the light emitted by the LED. An emission angle (beam angle) of the passed light is thereby smaller than an emission angle of the light emitted by the LED.

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