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. 31, 2016
Filed:
Sep. 18, 2015
Kabushiki Kaisha Toshiba, Minato-ku, Tokyo, JP;
Tetsuya Muranaka, Kitakyushu Fukuoka, JP;
Yuichi Ikedo, Kanazawa Ishikawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A photocoupler includes: a light emitting element; a light receiving element; an inner resin layer; and an outer resin layer. The light emitting element is driven by an input electrical signal. The light receiving element is configured to convert emission light of the light emitting element into an electrical signal. The inner resin layer includes a base resin and a curing agent. The base resin contains isocyanuric acid having an epoxy group. The curing agent contains an acid anhydride having an acid anhydride group. The inner resin layer covers the light emitting element and the light receiving element. Then outer resin layer encloses the inner resin layer and configured to block the emission light. Carbon atomic concentration increases and oxygen atomic concentration decreases with distance in depth direction of the inner resin layer from an interface.