Optical device
US9825248B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 25, 2014 |
| Grant date | Nov 21, 2017 |
| Priority date | — |
| Expiry date | Mar 25, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K59/80522
Abstract
An optical device (10) includes a joining structure in which a first conductive film (110) and a second conductive film (130) are joined to each other. The first conductive film (110) that constitutes the joining structure is constituted by a conductive material. The second conductive film (130) that constitutes the joining structure is constituted by a metal material. A part of the second conductive film (130) comes into contact with the first conductive film (110). A plurality of concave portions are provided in a contact surface of the second conductive film (130) which comes into contact with the first conductive film (110). The contact surface has a surface roughness greater than a surface roughness of a non-contact surface of the second conductive film (130) which does not come into contact with the first conductive film (110).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.