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:
Jan. 20, 2026
Filed:
Mar. 16, 2021
Plessey Semiconductors Limited, Plymouth, GB;
Samir Mezouari, Plymouth, GB;
Plessey Semiconductors Limited, Plymouth, GB;
Abstract
A micro-LED device for improving emission efficiency of LEDs. The micro-LED () comprises a mesa substrate () including a recess (); and a semiconductor material () provided in the recess, comprising a first surface () adjacent the mesa substrate, a second surface () opposite the first surface, and a light emission region () configured to emit light in response to application of an electrical current. The second surface comprises a convex surface (). Light emitted by the light emission region incident on the convex surface is transmitted through the convex surface if an angle of incidence to the normal of the convex surface is smaller than a critical angle, and is refracted upon transmission through the convex surface. The light emission region () is located proximate the focal plane of the convex surface (). An area of the light emission region is smaller than a cross-sectional area of the convex surface in a plane parallel to the light emission region.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile