Method of manufacturing wireless suspension blank
US6942817B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2001 |
| Grant date | Sep 13, 2005 |
| Priority date | — |
| Expiry date | Mar 21, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2203/0554
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A wireless suspension blank is made using a two-layer laminate composed of a metallic layer with the spring property and an electrically insulating layer. The first method includes a first step for working the metallic layer by the photo etching method, a second step for forming a wiring part on the insulating layer by the semi-additive method and a third step for working the insulating layer by the wet-etching method. The second method includes a first step for working the metallic layer by the photo etching method, a second step for forming a wiring part on the insulating layer by the semi-additive method and a third step for working the insulating layer by the plasma etching method. The third method includes a first step for forming a wiring part on the metallic layer by the semi-additive method, a second step for working the metallic layer by the wet-etching method and a third step for working the insulating layer by the dry-etching method or the wet-etching method. The use of a two-layer laminate makes possible a low cost production. Further, the forming of a wiring part by the semi-additive method makes possible to working very accurately a fine wiring part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.