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. 14, 2026
Filed:
Mar. 29, 2023
Landmark Optoelectronics Corporation, Tainan City, TW;
Hung-Wen Huang, Tainan City, TW;
Yung-Chao Chen, Tainan City, TW;
Yi-Hsiang Wang, Tainan City, TW;
Wei Lin, Tainan City, TW;
LANDMARK OPTOELECTRONICS CORPORATION, Tainan City, TW;
Abstract
A light detecting device includes a substrate that has a lattice constant. A buffer layer is disposed on the substrate. A gradient layer is formed on the buffer layer opposite to the substrate, and includes a plurality of sublayers that have respectively lattice constants each of which is greater than the lattice constant of the substrate. The sublayers are arranged in a manner that the lattice constants of the sublayers undergo a gradual increase in lattice constant in a direction away from the substrate. A barrier layer is formed on the gradient layer opposite to the buffer layer, and has a lattice constant which is greater than that of the substrate and no smaller than the lattice constants of the sublayers. An absorption layer is formed on the barrier layer opposite to the gradient layer.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile