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:
May. 27, 2025
Filed:
Apr. 20, 2022
Xiamen San'an Optoelectronics Co., Ltd., Xiamen, CN;
Jianming Liu, Xiamen, CN;
Taiying Shen, Xiamen, CN;
Shutao Liao, Xiamen, CN;
Zhenchao Lin, Xiamen, CN;
Bing-Yang Chen, Xiamen, CN;
Chung-Ying Chang, Xiamen, CN;
XIAMEN SAN'AN OPTOELECTRONICS CO., LTD., Xiamen, CN;
Abstract
An epitaxial substrate structure includes: a patterned substrate unit including a substrate having a top surface and spaced-apart protrusions formed thereon; and a buffer layer disposed on the top surface and the protrusions. Each of the protrusions has a bottom adjacent to the top surface, and a top opposite to the bottom. The buffer layer has a first portion disposed on the top surface, and second portions respectively disposed on the protrusions. Each of the second portions of the buffer layer has a thickness that gradually reduces from the bottom to the top along a respective one of the protrusions. An LED chip including the epitaxial substrate structure and manufacturing methods of the epitaxial substrate structure and the LED chip are also provided.