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.

Date of Patent:
Apr. 10, 2012

Filed:

Oct. 14, 2009
Applicants:

Hye Yeon Cha, Yongin-si, KR;

Young Soo OH, Seongnam-si, KR;

Sang Moon Lee, Seoul, KR;

Jeong Bok Kwak, Suwon-si, KR;

Hwan Soo Lee, Seoul, KR;

Inventors:

Hye Yeon Cha, Yongin-si, KR;

Young Soo Oh, Seongnam-si, KR;

Sang Moon Lee, Seoul, KR;

Jeong Bok Kwak, Suwon-si, KR;

Hwan Soo Lee, Seoul, KR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 26/00 (2006.01); G09G 3/34 (2006.01);
U.S. Cl.
CPC ...
Abstract

The electronic paper display device may include a first electrode; a dielectric layer that is disposed on the first electrode and has a plurality of cells defined by a barrier; a second electrode that faces the dielectric layer; and electronic balls that are disposed in the inside of the respective cells to display an image according to the electric fields applied to the first and second electrodes wherein a side of the barrier is formed in a recessed round shape.


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