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:
Oct. 08, 2013
Filed:
Nov. 29, 2011
Min-hsun Hsieh, Hsinchu, TW;
Chien-yuan Wang, Hsinchu, TW;
Tsung-xian Lee, Hsinchu, TW;
Chih-ming Wang, Hsinchu, TW;
Ming-chi Hsu, Hsinchu, TW;
Han-min Wu, Hsinchu, TW;
Min-Hsun Hsieh, Hsinchu, TW;
Chien-Yuan Wang, Hsinchu, TW;
Tsung-Xian Lee, Hsinchu, TW;
Chih-Ming Wang, Hsinchu, TW;
Ming-Chi Hsu, Hsinchu, TW;
Han-Min Wu, Hsinchu, TW;
Epistar Corporation, Hsinchu, TW;
Abstract
Disclosed is a light-emitting device comprising: a carrier; a light-emitting element disposed on the carrier; a first light guide layer covering the light-emitting element, and disposed on the carrier; a wavelength conversion and light guide layer covering the first light guide layer and the light-emitting element, and disposed on the carrier; and a low refractive index layer disposed between the first light guide layer and the wavelength conversion and light guide layer; wherein the first light guide layer comprises a gradient refractive index, the wavelength conversion and light guide layer comprises a dome shape structure and is used to convert a wavelength of light emitted from the light-emitting element and transmit light, and the low refractive index layer is used to reflect light from the wavelength conversion and light guide layer.