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. 10, 1993
Filed:
Mar. 01, 1991
Shuji Imazeki, Saitama, JP;
Yasushi Tomioka, Saitama, JP;
Naoki Tanaka, Saitama, JP;
Tatsuo Kanetake, Saitama, JP;
Seiichi Kondo, Saitama, JP;
Yoshio Taniguchi, Hino, JP;
Katsumi Kondo, Katsuta, JP;
Hideaki Kawakami, Chiba, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A method for producing a polarizer patterned with a plural number of portions having a polarizing ability or direction of polarization comprising the first step of producing a surface oriented in a pre-determined direction on a substrate, the second step of producing a polymerizable molecular layer which comprises polymerizable molecules on the above surface, the third step of polymerizing the molecules in said polymerizable molecular layer into a desired pattern and the fourth step of removing the unpolymerized portion of said polymerizable molecular layer. For example, the following procedure is repeated on one surface of a substrate to be given a polarizing ability: (1) An organic thin film uniformly oriented in a particular direction is produced by the Langmuir-Blodgett method, (2) a polymerizable molecular layer is produced on the above thin film, (3) the molecules in the polymerizable molecular layer is polymerized into a desired pattern and (4) the portion left unpolymerized of the polymerizable molecular layer is removed. By this treatment, a polarizer having as many orientation directions as the number of repetitions is obtained. The orientational order can also be given by rubbing in place of the Langmuir-Blodgett method.