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:
Jul. 09, 1991
Filed:
May. 17, 1989
Applicant:
Inventors:
Takumi Suzuki, Machida, JP;
Hisao Takahashi, Atsugi, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
350335 ; 350334 ; 350344 ;
Abstract
The present invention discloses a multilayer liquid crystal display device which has superposed liquid crystal panel units having plastic film substrates. Spacers of a size not larger than 50 .mu.m are dispersed on and fixed to one viewing area of the facing panel units to prevent contact between adjacent units and even when the viewing area of the device is large and/or even when the device is left alone under bad conditions, no Newton ring, no optical interference fringe or no uneven transmission are recognized on the display screen of the device.