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:
Nov. 21, 2017
Filed:
Mar. 25, 2014
Pioneer Corporation, Kawasaki-shi, Kanagawa, JP;
Tohoku Pioneer Corporation, Tendo-shi, Yamagata, JP;
Yuji Saito, Yonezawa, JP;
Masanobu Akagi, Yonezawa, JP;
Kenichi Okuyama, Yonezawa, JP;
Hiroki Tan, Yonezawa, JP;
Kunihiko Shirahata, Yonezawa, JP;
PIONEER CORPORATION, Kawasaki-Shi, Kanagawa, JP;
TOHOKU PIONEER CORPORATION, Tendo-Shi, Yamagata, JP;
Abstract
An optical device () includes a joining structure in which a first conductive film () and a second conductive film () are joined to each other. The first conductive film () that constitutes the joining structure is constituted by a conductive material. The second conductive film () that constitutes the joining structure is constituted by a metal material. A part of the second conductive film () comes into contact with the first conductive film (). A plurality of concave portions are provided in a contact surface of the second conductive film () which comes into contact with the first conductive film (). The contact surface has a surface roughness greater than a surface roughness of a non-contact surface of the second conductive film () which does not come into contact with the first conductive film ().