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:
Oct. 12, 2021
Filed:
Sep. 12, 2019
Applicant:
Wicue, Inc., Cupertino, CA (US);
Inventors:
Fenghua Li, Cupertino, CA (US);
Rui Bao, Shenzhen, CN;
Assignee:
WICUE, INC., Cupertino, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/1333 (2006.01); G02F 1/1339 (2006.01); G02F 1/13357 (2006.01); G02F 1/1337 (2006.01); G02F 1/1335 (2006.01);
U.S. Cl.
CPC ...
G02F 1/13338 (2013.01); G02F 1/1339 (2013.01); G02F 1/133365 (2013.01); G02F 1/133514 (2013.01); G02F 1/133617 (2013.01); G02F 1/133711 (2013.01);
Abstract
Described are multicolor liquid crystal writing devices that exhibit high brightness and contrast and methods for manufacturing multicolor liquid crystal writing devices that exhibit high brightness and contrast. The liquid crystals used in the devices and methods described are photosensitized using UV light to modify a reflective character of the liquid crystals and different amounts, intensities, wavelengths, or exposure durations of UV light provide for different reflective colors.