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:
Jul. 28, 2026
Filed:
Oct. 20, 2022
Applicant:
Sundiode Korea, Seoul, KR;
Inventors:
James Chinmo Kim, Mountain View, CA (US);
Sungsoo Yi, Sunnyvale, CA (US);
Assignee:
SUNDIODE KOREA, , KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H10H 20/856 (2025.01); H10H 20/825 (2025.01);
U.S. Cl.
CPC ...
H10H 20/856 (2025.01); H10H 20/825 (2025.01);
Abstract
Disclosed is a unit pixel of a microdisplay having a concave reflector with a center aperture. The light extractor has a protrusion and a bulk portion formed using the same epitaxial growth process. The concave reflector with a center aperture is formed on the protrusion, and epitaxial growth of the light-emitting body is made through the aperture concave reflector. In addition, the light rays reflected by the concave reflector with a center aperture has exit angles that are nearly perpendicular to the exit surface and are thus easily emitted to the outside.