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:
May. 10, 2005
Filed:
Apr. 15, 2002
Seiji Umemoto, Ibaraki, JP;
Ryoji Kinoshita, Ibaraki, JP;
Yuuki Nakano, Ibaraki, JP;
Hiroaki Kishioka, Ibaraki, JP;
Waka Sakaitani, Ibaraki, JP;
Seiji Umemoto, Ibaraki, JP;
Ryoji Kinoshita, Ibaraki, JP;
Yuuki Nakano, Ibaraki, JP;
Hiroaki Kishioka, Ibaraki, JP;
Waka Sakaitani, Ibaraki, JP;
Nitto Denko Corporation, Osaka, JP;
Abstract
A touch panel-including illuminator having: a light pipe made of a transparent plate-like material having an upper surface, a lower surface and at least one incidence side surface, the upper surface being provided with light output means through which light incident on the incidence side surface is made to emerge from the lower surface; a light source disposed on the incidence side surface of the light pipe; an adhesive layer; and a touch panel bonded to the upper surface of the light pipe through the adhesive layer; wherein the light output means are constituted by fine grooves which are disposed discontinuously, each of which is made of a concave portion, and each of which is shaped like an approximate triangle in section; and wherein each of the fine grooves has an optical path changing slope and a steep slope.