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:
Jun. 07, 2005
Filed:
Jul. 09, 2002
Yoshiyuki Uemura, Osaka, JP;
Tomihisa Saito, Osaka, JP;
Yoshiyuki Uemura, Osaka, JP;
Tomihisa Saito, Osaka, JP;
Nippon Sheet Glass Co., Ltd., Osaka, JP;
Abstract
A light-emitting unithas a light-emitting unit boardmade of resin provided with a lead frame. The light-emitting unit boardis also provided with an open windowfor mounting a light-emitting device. The lead framecomprises a lead terminal section, an inner lead section, and a light-emitting device mounting and connecting sectionwhich is exposed within the open windowThe light-emitting devices, andare bonded with the light-emitting device mounting and connecting section, and electrodes of the light-emitting devices and the lead frame are connected by a metal wire, wherein the open windowis sealed by transparent resin. The lead frameis made of iron-containing copper to improve heat radiation performance of the light-emitting unit board. By increasing maximum current to be supplied to the light-emitting diodes, it is possible to increase illumination brightness and to attain speedup of image reading.