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:
Mar. 01, 2022
Filed:
Oct. 18, 2019
Applicant:
Facebook Technologies, Llc, Menlo Park, CA (US);
Inventors:
Yingfei Jiang, Menlo Park, CA (US);
Afsoon Jamali, Menlo Park, CA (US);
Changwon Jang, Menlo Park, CA (US);
Adrian Travis, Menlo Park, CA (US);
Andrew Maimone, Menlo Park, CA (US);
Lu Lu, Menlo Park, CA (US);
Assignee:
FACEBOOK TECHNOLOGIES, LLC, Menlo Park, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 19/02 (2006.01); G02F 1/29 (2006.01); C09K 19/14 (2006.01); C09K 19/58 (2006.01); C09K 19/04 (2006.01);
U.S. Cl.
CPC ...
G02F 1/29 (2013.01); C09K 19/0258 (2013.01); C09K 19/14 (2013.01); C09K 19/58 (2013.01); C09K 2019/0444 (2013.01); G02F 1/294 (2021.01); G02F 2201/122 (2013.01);
Abstract
A liquid crystal (LC) mixture for a pitch variable optical element is provided. The LC mixture includes a host LC and one or more LC dimers dissolved as a guest in the host LC. The host LC and the one or more LC dimers have respective dielectric anisotropies of opposite signs in nematic phase. A net dielectric anisotropy of the LC mixture is substantially neutral.