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:
Aug. 19, 2014
Filed:
Dec. 28, 2012
Tsinghua University, Beijing, CN;
Hon Hai Precision Industry Co., Ltd., New Taipei, TW;
Hao-Su Zhang, Beijing, CN;
Jun Zhu, Beijing, CN;
Qun-Qing Li, Beijing, CN;
Guo-Fan Jin, Beijing, CN;
Shou-Shan Fan, Beijing, CN;
Tsinghua University, Beijing, CN;
Hon Hai Precision Industry Co., Ltd., New Taipei, TW;
Abstract
A light emitting diode includes a substrate, a first semiconductor layer, an active layer, a second semiconductor layer, a third optical symmetric layer, a metallic layer, a fourth optical symmetric layer, and a first optical symmetric layer, and a second optical symmetric layer stacked with other in the listed sequence. The light emitting diode further includes a first electrode electrically connected with the first semiconductor layer and a second electrode electrically connected with the second semiconductor layer. A refractive index of the third optical symmetric layer or the fourth optical symmetric layer is in a range from about 1.2 to about 1.5. A refractive index difference between the source layer and the first optical symmetric layer is less than or equal to 0.3. A refractive difference between the second optical symmetric layer and the substrate is less than or equal to 0.1.