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:
Jan. 17, 1978
Filed:
Jun. 16, 1975
Applicant:
Inventors:
Kenji Nakamura, Kamakura, JA;
Iwao Seno, Toyonaka, JA;
Assignee:
Japan Suncrux Co., Ltd., Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
3501 / ; 350155 ;
Abstract
A twisted nematic type color liquid crystal display device comprises a twisted nematic liquid crystal cell sandwiched between a pair of linear polarizers. One of the linear polarizers is achromatic and the other is colored. The colored linear polarizer should preferably be doubled to increase contrast of the patterns displayed thereby.