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:
Nov. 10, 2020
Filed:
Oct. 31, 2018
Applicant:
Facebook Technologies, Llc, Menlo Park, CA (US);
Inventors:
Nirav Rajendra Patel, San Francisco, CA (US);
Dong Chen, Foster City, CA (US);
Assignee:
Facebook Technologies, LLC, Menlo Park, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/13357 (2006.01); G02B 27/01 (2006.01);
U.S. Cl.
CPC ...
G02F 1/133602 (2013.01); G02B 27/0172 (2013.01); G02F 1/133615 (2013.01);
Abstract
A display includes a display pixel array, a backlight emitter, and a lightguide. The backlight emitter provides illumination light. The lightguide receives the illumination light from the backlight emitter and distributes the illumination light to illuminate the display pixel array. The lightguide is configured to illuminate a viewing boundary of the display pixel array with an illumination gradient that fades from fully illuminated along a viewing portion to unilluminated along a non-viewing portion.