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:
May. 13, 1997
Filed:
Jan. 22, 1996
Masami Ogura, Kashihara, JP;
Masayuki Yamanaka, Yamatokoriyama, JP;
Hiroshi Takanashi, Soraku-gun, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A liquid crystal display device has a liquid crystal layer having super twisted nematic liquid crystal with a twist angle of 260.degree., the liquid crystal layer being sandwiched between a first substrate and a second substrate. A color filter is formed on the second substrate. The first substrate is orientation-processed so that pretilt angles of the liquid crystal to the first substrate are 5.5.degree.. The second substrate is orientation-processed so that pretilt angles of the liquid crystal to the second substrate are 3.0.degree.. Therefore, it is possible to easily reduce occurrence rate of inadequate display and, at the same time, to maintain beneficial characteristics of a liquid crystal display device with a twist angle of 250.degree. or more, i.e., a good temperature characteristic, a small contrast change against a temperature change, and good quality display.