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:
Sep. 07, 2021
Filed:
Mar. 26, 2018
Ushio Denki Kabushiki Kaisha, Tokyo, JP;
USHIO DENKI KABUSHIKI KAISHA, Tokyo, JP;
Abstract
Disclosed herein is a semiconductor laser device utilizing a sub-mount substrate that is capable of having a further sufficient heat dissipation property. The semiconductor laser device comprises: a monocrystalline sub-mount substrate having a crystalline structure including a first crystalline plane (c-plane) having a normal line direction on a first crystalline axis (c-axis) and a second crystalline plane (a-plane) having a normal line direction on a second crystalline axis (a-axis) having a higher thermal conductivity than the first crystalline axis; and a semiconductor laser chip configured to be joined to a side of a first surface of the sub-mount substrate. The first crystalline plane inclines with respect to the first surface of the sub-mount substrate.