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:
Jul. 05, 2011

Filed:

Jul. 28, 2009
Applicant:

Sung Nae Cho, Yongin-si, KR;

Inventor:

Sung Nae Cho, Yongin-si, KR;

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

Provided are an optical shutter including charged particles, and a display apparatus using the optical shutter. The optical shutter may block or transmit light by changing the position of the charged particle according to a direction an electrical field is applied. Also, a new type of display apparatus may be realized by using the optical shutter as a pixel of the display apparatus. The charged particles react very quickly to the change of the electrical field, and thus, a display apparatus having high operational speed may be realized.


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Cho, Sung. (2011). Optical shutter having charged particle and display apparatus using the same (U.S. Patent No. 7974000). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7974000

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