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. 03, 2021
Filed:
Nov. 27, 2017
Mitsubishi Electric Corporation, Tokyo, JP;
Koichi Fujita, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
An optical semiconductor device of the invention includes: a semiconductor substrate; an optical communication unit that is provided on the semiconductor substrate, as a light receiving unit for receiving an optical signal or a light emitting unit for emitting an optical signal; an interlayer film that covers the semiconductor substrate and the optical communication unit; a Fresnel lens through which the optical signal passes, that is provided on a planarized surface of the interlayer film placed on its side farther from the semiconductor substrate; and a protective film that covers the Fresnel lens and the interlayer film, whose refractive index is larger than that of the interlayer film, and whose surface placed on its side farther from the interlayer film is planarized.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile