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. 21, 2000
Filed:
Oct. 28, 1998
Shigeru Matsuyama, Mobara, JP;
Hiroaki Asuma, Mobara, JP;
Masato Shimura, Mobara, JP;
Yoshifumi Tomita, Mobara, JP;
Sukekazu Aratani, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A liquid crystal display device comprising a black mask formed on one of a pair of substrates at least one of which is transparent, a group of electrodes formed on at least one of the pair of substrates, a liquid crystal layer comprising a liquid crystal composition substance having a dielectric anisotropy and held between the pair of substrates, an orientation control film formed between the liquid crystal layer and one of the substrates for orienting liquid crystal molecules of the liquid crystal composition substance in a predetermined direction, a polarizer laminated on at least one of the pair of substrates, and a driver for applying a drive voltage to the group of electrodes, wherein the group of electrodes has a structure that the electrodes are so arranged as to generate an electric field having a component predominantly in parallel with the interface between the orientation control film and the liquid crystal layer, the liquid crystal composition substance has a resistivity of not smaller than 10.sup.N .OMEGA..multidot.cm, and the black mask has a resistivity of not smaller than 10.sup.M .OMEGA..multidot.cm, wherein N and M are integers satisfying the relationships N.gtoreq.9 and M.gtoreq.6.