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. 28, 2026
Filed:
Dec. 27, 2023
Applicant:
E Ink Corporation, Billerica, MA (US);
Inventors:
Yu Xia, Acton, MA (US);
Dirk Hertel, Quincy, MA (US);
Dan Luo, Billerica, MA (US);
Stephen J. Telfer, Arlington, MA (US);
Assignee:
E Ink Corporation, Billerica, MA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/167 (2019.01); G02F 1/00 (2006.01); G02F 1/1676 (2019.01); G02F 1/1681 (2019.01);
U.S. Cl.
CPC ...
G02F 1/167 (2013.01); G02F 1/0018 (2013.01); G02F 1/1676 (2019.01); G02F 1/1681 (2019.01);
Abstract
A variable light transmission device is disclosed, the variable light transmission device comprising two light transmissive electrode layer and a microcell layer having a plurality of microcells. Each of the plurality of microcells includes a first type of electrically charged pigment particles and a second type of electrically charged pigment particles, a charge control agent, and a non-polar liquid. Upon application of an electric field, the amount of light passing through the device can be modulated.