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:
Mar. 23, 1993
Filed:
Sep. 12, 1988
Applicant:
Inventors:
Shunpei Yamazaki, Tokyo, JP;
Takashi Inujima, Atsugi, JP;
Toshimitsu Konuma, Atsugi, JP;
Toshiji Hamatani, Atsugi, JP;
Akira Mase, Atsugi, JP;
Mitsunori Sakama, Hiratsuka, JP;
Minoru Miyazaki, Atsugi, JP;
Kaoru Koyanagi, Saku, JP;
Toshiharu Yamaguchi, Zama, JP;
Assignee:
Semiconductor Energy Laboratory Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
359 75 ; 359 76 ; 359 84 ; 359100 ;
Abstract
A liquid crystal display of the chiral smectic type is caused to have grey scales, by applying a voltage of an intermediate level to the liquid crystal. Within each picture element of the display, there are a number of domains of the liquid crystal layer, some being transparent while the other being opaque rendering grey tone to the picture element.