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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.:

US 7133094 B1

PDFFull Text
Date of Patent:
Nov. 07, 2006

Filed:

Feb. 28, 2003

Liquid crystal display apparatus having a transparent layer covering a reflective layer

Applicants:

Shinji Ogawa, Ohgaki, JP;

Kazuhiro Inoue, Gifu, JP;

Norio Koma, Gifu, JP;

Nobuhiko Oda, Hashima, JP;

Satoshi Ishida, Ohgaki, JP;

Tsutomu Yamada, Gifu, JP;

Tohru Yamashita, Gifu, JP;

Inventors:

Shinji Ogawa, Ohgaki, JP;

Kazuhiro Inoue, Gifu, JP;

Norio Koma, Gifu, JP;

Nobuhiko Oda, Hashima, JP;

Satoshi Ishida, Ohgaki, JP;

Tsutomu Yamada, Gifu, JP;

Tohru Yamashita, Gifu, JP;

Assignee:

Sanyo Electric Co., Ltd., , JP;

Attorney:

Cantor Colburn LLP

Primary Examiner:

Andrew Schechter

Int. Cl.
CPC ...
G02F 1/1343 (2006.01);
U.S. Cl.
CPC ...
Abstract

A reflective layer for reflecting light incident from a second substrate side and transmitting through a second electrode made of ITO or the like is formed above a first substrate, a switching element provided for each pixel, and an insulating film covering the switching element, the reflective layer being insulated from the switching element. A first electrode having a work function similar to the second electrode and made of a transparent conductive material such as ITO is formed more proximate to a liquid crystal layer than is the reflective layer and is connected to the switching element. The thickness of the first electrode is set to 100 Å or less or in a range approximately from 750 Å to 1250 Å. Alternatively, the switching element maybe connected to the reflective electrode, the first electrode and the reflective electrode which are formed with an insulating film therebetween may be capacitively coupled, and the first electrode may be driven by the reflective electrode via the capacitor.

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