Paste containing electrically conducting powder to form conducting solid filler in cavity in ceramic substrate
US4409135A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1981 |
| Grant date | Oct 11, 1983 |
| Priority date | — |
| Expiry date | Mar 26, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K1/092
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is a paste containing an electrically conducting powder, which is a mixture of a platinum powder and a ceramic material powder in a proportion in the range from 51:49 to 78:22 by volume and has a specific surface area of 1.0 to 10.0 m.sup.2 /g, uniformly dispersed in an organic liquid vehicle in a proportion in the range from 70:30 to 50:50 by weight. A cavity in a ceramic substrate of an electric device having two, or more, conducting parts separately fixed to the substrate is filled up with this paste, and subsequently the substrate is fired to sinter the paste in the cavity into a conducting solid filler which provides electrical connection between the two conducting parts with low resistance and close and firm contact with the conducting parts and wall surfaces defining the cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.