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. 21, 2025
Filed:
Oct. 15, 2019
Ylx Incorporated, Shenzhen, CN;
Chao-Chen Cheng, Shenzhen, CN;
Anh Chuong Tran, Shenzhen, CN;
YLX INCORPORATED, Shenzhen, CN;
Abstract
A semiconductor laser chip and a preparation method therefor, the method comprising: providing an epitaxial wafer (), the epitaxial wafer () comprising a plurality of resonant cavities () arranged in parallel; providing a heat sink substrate (); attaching the epitaxial wafer () to the heat sink substrate () so as to form a first chip semi-finished product (); performing first division on the first chip semi-finished product () in the direction perpendicular to the resonant cavities () so as to divide the first chip semi-finished product () into a plurality of second chip semi-finished products (); and performing second division on the second chip semi-finished products () in the direction parallel to the resonant cavities () so as to divide the second chip semi-finished products () into a plurality of semiconductor laser chips () such that the semiconductor laser chips () comprise at least one laser bar.