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. 08, 2025
Filed:
May. 25, 2021
Applicant:
Applied Materials, Inc., Santa Clara, CA (US);
Inventors:
David Sell, Santa Clara, CA (US);
Brian Alexander Cohen, Delmar, NY (US);
Assignee:
APPLIED MATERIALS, INC., Santa Clara, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/18 (2006.01); G02B 27/01 (2006.01);
U.S. Cl.
CPC ...
G02B 5/1857 (2013.01); G02B 5/1819 (2013.01); G02B 27/0172 (2013.01);
Abstract
Gradient encapsulation of waveguide outcoupler gratings for control of diffraction efficiency and directionality includes a first grating formed over a substrate, the first grating having a plurality of first structures extending away from the substrate, the first grating corresponding to an outcoupler. The device includes a first encapsulant disposed in one or more gaps formed between adjacent first structures, where a fill ratio of the first encapsulant decreases along the first grating. Also described herein are methods for fabricating the device.