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:
Sep. 01, 2020
Filed:
Nov. 18, 2019
Applicant:
E Ink California, Llc, Fremont, CA (US);
Inventors:
Ming Wang, Fremont, CA (US);
Craig Lin, Fremont, CA (US);
Hui Du, Milpitas, CA (US);
HongMei Zang, Fremont, CA (US);
XiaoJia Zhang, Fremont, CA (US);
Assignee:
E INK CALIFORNIA, LLC, Fremont, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/34 (2006.01); G02F 1/167 (2019.01); G09G 3/20 (2006.01); G02F 1/1675 (2019.01);
U.S. Cl.
CPC ...
G09G 3/344 (2013.01); G02F 1/167 (2013.01); G09G 3/2003 (2013.01); G02F 2001/1678 (2013.01);
Abstract
An electrophoretic display including a passive matrix formed of row and column electrodes with an electrophoretic medium including two types of differently-colored charged particles disposed between the row and column electrodes. When the device is driven to a first color state by providing a voltage differential of 15V, the color state is stable for voltage differentials between 15V and −5V. The display switches to the second color state when a voltage differential of −15V is provided.