The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 14, 2022
Filed:
Oct. 08, 2020
Lumileds Llc, San Jose, CA (US);
Antonio Lopez-Julia, Aachen, DE;
Jens Meyer, Aachen, DE;
Marcel van Gerwen, Aachen, DE;
Ronja Missong, Aachen, DE;
Joerg Feldmann, Aachen, DE;
Hans-Helmut Bechtel, Aachen, DE;
Lumileds LLC, San Jose, CA (US);
Abstract
An optical coupling structures are disposed on light output surfaces of semiconductor LEDs of a miniLED or microLED array to facilitate coupling of light emitted by the semiconductor LEDs through the light output surfaces. The optical coupling structures comprise light scattering particles and/or air voids embedded in or coated with a thin layer of a material that has an index of refraction close to or matching the index of refraction of the material forming the light output surface of the semiconductor LEDs.