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:
Aug. 16, 2005
Filed:
Jul. 30, 1998
Yasushi Kaneko, Sayama, JP;
Takashi Akiyama, Sayama, JP;
Masafumi Ide, Tokorozawa, JP;
Citizen Watch Co., Ltd., Tokyo, JP;
Abstract
A liquid crystal display device is made by disposing an STN cell () in which nematic liquid crystal () having a twist angle in the range from 180° to 270° is filled and sandwiched between a first substrate () having a first electrode () and a second substrate () having a second electrode () at the center, providing a retardation film () and an absorption-type polarizing film () outside the second substrate () in order, and providing a reflection-type polarizing film () and a light absorbing film () outside the first substrate () in order. This enables a metallic silver background due to the reflected light by the reflection-type polarizing film () and display in black or in color by light passing through the reflection-type polarizing film () being absorbed in the light absorbing film () or only light of specific color being reflected.