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. 02, 2021
Filed:
Feb. 11, 2015
Guangzhou Oed Technologies, Inc., Guangdong, CN;
Yongqiang Lin, Guangzhou, CN;
Jingquan Sun, Guangzhou, CN;
Guangzhou OED Technologies, INC., Guangzhou, CN;
Abstract
The present invention provides a light guide plate () for an electronic paper display and the electronic paper display. The light guide plate () is arranged above a display surface of an electrophoretic display module (), and it comprises a main body, wherein a tooth-shaped pattern is arranged on an in-light surface () of the main body. The electrophoretic display module () comprises a microcapsule electrophoretic display module or a microcup electrophoretic display module. The tooth-shaped pattern is formed by a plurality of arc-shaped projections (), arc-shaped recesses (), angle-shaped projections, or angle-shaped recesses (). The tooth-shaped pattern provides the in-light surface () with in-light angles of multiple directions, which greatly diffuse light beam that enters the light guide plate (), thereby avoiding appearance of a dark area (B, B, B) in an in-light position of the display area (), so as to provide a more evenly distributed luminance in the display area () and thus provides a better lighting effect.