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:
Nov. 28, 2006

Filed:

Aug. 05, 2003
Applicants:

Naofumi Yamauchi, Chiba, JP;

Makoto Kurihara, Chiba, JP;

Inventors:

Naofumi Yamauchi, Chiba, JP;

Makoto Kurihara, Chiba, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/1335 (2006.01);
U.S. Cl.
CPC ...
Abstract

To realize at low cost a liquid crystal display device which is thin and in which display on a single liquid crystal panel can be viewed in both ways, from the front and from the back. The liquid crystal display device includes a liquid crystal panel in which a liquid crystal layer is interposed between opposing substrates, and a polarizer and a reflection-polarizing plate provided so as to interpose the liquid crystal panel therebetween. The reflection axis of the reflection-polarizing plate is set in the same direction as a polarization direction of light that exits the liquid crystal panel after its polarization direction is changed in the liquid crystal layer, or a polarization direction of light that exits the liquid crystal panel without being changed in polarization direction in the liquid crystal layer. Due to this arrangement, a liquid crystal display device can be provided which is thin and capable of displaying on both the front side and the back side.


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Yamauchi, Naofumi. (2006). Liquid crystal display device viewable from both sides using incident light from only one of the sides, and using only one reflection-polarizing plate on one of the sides (U.S. Patent No. 7142270). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7142270

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