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. 12, 2017
Filed:
Aug. 01, 2012
Zhuo Zhang, Beijing, CN;
Zhuo Zhang, Beijing, CN;
BOE TECHNOLOGY GROUP CO., LTD., Beijing, CN;
Abstract
The embodiments of present invention disclose an electronic handwriting screen and relate to the field of electrophoretic display techniques. In the embodiment of present invention, because insulation spacing elements are provided between the electrophonic display functional film and the bottom electrode, when an appropriate voltage is applied between the top electrode and the bottom electrode, the top electrode is pressed so as to make the electrophonic display functional film contact with the bottom electrode, which shortens the distance between the top electrode and the bottom electrode and further increases the electric field force acting on the charged colorant particles; as a result, electrophoresis effect occurs in the electrophoresis liquid so that patterns are displayed or erased at the pressing location, and handwriting function is thereby realized without a touch screen, reducing the manufacturing costs for an electronic handwriting screen.