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:
Apr. 28, 1992
Filed:
Mar. 28, 1991
Applicant:
Inventors:
Shunpei Yamazaki, Tokyo, JP;
Toshimitsu Konuma, Atsugi, JP;
Toshiji Hamatani, Atsugi, JP;
Akira Mase, Atsugi, JP;
Toshiharu Yamaguchi, Zama, JP;
Mitsunori Sakama, Hiratsuka, JP;
Takashi Inujima, Atsugi, JP;
Assignee:
Semiconductor Energy Laboratory Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
359 62 ; 359 54 ; 359104 ;
Abstract
An improved liquid crystal device immune to contamination of the liquid crystal is shown. The liquid crystal is isolated from ion sources such as glass substrates, transparent electrodes or so on by means of a nitride layer positioned therebetween.