Connection structure between printed circuit board and electronic component
US8354599B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2008 |
| Grant date | Jan 15, 2013 |
| Priority date | — |
| Expiry date | Aug 24, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Each wiring pattern is composed of a conductor layer and a tin plating layer, and includes a tip portion, a connection portion and a signal transmission portion. The width of the tip portion is equal to the width of the signal transmission portion, and the width of the connection portion is smaller than the widths of the tip portion and the signal transmission portion. The connection portions of wiring patterns and bumps of an electronic component are connected to one another, respectively, by heat-sealing when the electronic component is mounted. Respective distances A1, A2 are set to not less than 0.5 μm. Respective distances B1, B2 are set to not less than 20 μm. The thickness of the tin plating layer is set to not less than 0.07 μm and not more than 0.25 μm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.