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. 09, 2004
Filed:
Sep. 10, 2002
Applicant:
Inventors:
Hitoshi Taniguchi, Yokohama, JP;
Yasuo Hira, Yokohama, JP;
Toshihiko Ariyoshi, Toyohashi, JP;
Seiji Umemoto, Toyohashi, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/065 ;
U.S. Cl.
CPC ...
G02F 1/065 ;
Abstract
A method for manufacturing a light guide plate having dots on one surface thereof includes forming an oxide film on a crystal plane of a silicon substrate, forming a resist film on the oxide film, and forming a dot pattern in the oxide film by using the resist film as a mask, anisotropically etching the silicon substrate by using the oxide film as a mask, forming a metal film on the silicon substrate, stripping the metal film off so as to produce a stamper or a replica thereof, and transferring the dots onto a surface of a film or a plastic sheet or plate by using the stamper or the replica.