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:
Feb. 07, 2006
Filed:
Apr. 09, 2003
Toshihiro Otake, Okaya, JP;
Mutsumi Matsuo, Misato-mura, JP;
Tadashi Tsuyuki, Okaya, JP;
Seiko Epson Corporation, , JP;
Abstract
A substrate is provided with a light reflecting film in which the depths of a plurality of concave portions formed on the surface of the base or the heights of a plurality of convex portions formed on the surface of the base are substantially equal, the planar shapes of the plurality of concave portions or the convex portions are overlapped circles and overlapped polygons, or any one of the aforesaid circles and polygons, and a plurality of concave portions or convex portions are randomly arranged over a plane, the substrate with the light reflecting film being prepared by using a mask comprising light-transmitting parts or non-light-transmitting parts formed by a plurality of dots less than the number of the dot regions as one unit, in which the light-transmitting parts or the non-light-transmitting parts are randomly arranged in the unit, and a plurality of the one unit is repeated.