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:
Apr. 01, 2014
Filed:
Aug. 15, 2011
Yoshinori Shimizu, Tokushima, JP;
Kensho Sakano, Anan, JP;
Yasunobu Noguchi, Tokushima, JP;
Toshio Moriguchi, Anan, JP;
Yoshinori Shimizu, Tokushima, JP;
Kensho Sakano, Anan, JP;
Yasunobu Noguchi, Tokushima, JP;
Toshio Moriguchi, Anan, JP;
Nichia Corporation, Anan-Shi, JP;
Abstract
A light emitting device comprises: an LED chip having a quantum well structure and a light emitting layer made of a gallium nitride compound semiconductor; a first transparent material covering the LED chip; a second transparent material for protecting the LED chip and the first transparent material; and a phosphor for absorbing a part of the light from the LED chip and emitting a light having a wavelength different from the light from the LED chip; wherein the phosphor is included in second transparent material, and the light from the LED chip and the light from said phosphor are mixed to make a white light.