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:
Oct. 08, 1991
Filed:
Feb. 08, 1990
Masao Imanishi, Shizuoka, JP;
Atsushi Ohtaka, Shizuoka, JP;
Kunio Hiyama, Shizuoka, JP;
Takanori Kawamura, Shizuoka, JP;
Yamaha Corp., , JP;
Abstract
In construction of a liquid crystal display including an alignment film and generally used for video display panels such as television sets, the orientation wafer is given in the form of a porous alumina layer. Substantially vertical molecular orientation is resulted from penetration of liquid crystal molecules into pores in the alignment film. Optical application of rubbing process in production enables free adjustment of the value of pretilt angle. Good reproduction and stability is assured even in the case of large fields of vision.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile