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:
Jan. 07, 2014
Filed:
May. 16, 2012
Bo-hsiang Tseng, Hsinchu, TW;
Yi-shan Hsieh, Hsinchu, TW;
Bo-wen Lin, Hsinchu, TW;
Kun-lin Yang, Hsinchu, TW;
Chun-yen Peng, Hsinchu, TW;
Wen-ching Hsu, Hsinchu, TW;
Bo-Hsiang Tseng, Hsinchu, TW;
Yi-Shan Hsieh, Hsinchu, TW;
Bo-Wen Lin, Hsinchu, TW;
Kun-Lin Yang, Hsinchu, TW;
Chun-Yen Peng, Hsinchu, TW;
Wen-Ching Hsu, Hsinchu, TW;
Sino-American Silicon Products Inc., Hsinchu, TW;
Abstract
A light emitting diode (LED) substrate includes a sapphire substrate which is characterized by having a surface consisting of irregular hexagonal pyramid structures, wherein a pitch of the irregular hexagonal pyramid structure is less than 10 μm. A symmetrical cross-sectional plane of each of the irregular hexagonal pyramid structures has a first base angle and a second base angle, wherein the second base angle is larger than the first base angle, and the second base angle is 50° to 70°. This LED substrate has high light-emitting efficiency.