Method of manufacturing a wiring board having via structures
US9107314B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 13, 2013 |
| Grant date | Aug 11, 2015 |
| Priority date | — |
| Expiry date | Jun 29, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49165
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of manufacturing a wiring board includes: forming an outer through hole in a core substrate; filling the outer through hole with an insulation resin; forming a first conductive layer on a surface of the insulation resin at a portion where a core connecting via is formed; forming a land around the first conductive layer; laminating the wiring layer on the core substrate after the forming of the first conductive layer and the forming of the land; forming an inner through hole having a smaller diameter than that of the outer through hole and penetrating through the core substrate and the wiring layer so as to penetrate through the insulation resin; and coating a first conductive film on an inner wall surface of the inner through hole, in which the core substrate and the first conductive film are electrically connected through the first conductive layer and the land.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.