Silver-glass die attach paste with reduced resin
US4968738A · kind A · utility
33Cited by
12References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 6, 1989 |
| Grant date | Nov 6, 1990 |
| Priority date | — |
| Expiry date | Apr 6, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/15787
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Glass frit and silver particles are combined with a vehicle gel comprising a cross-linked resin dispersed in an organic solvent. The resin comprises a polymerized monomer selected from a first group consisting of C.sub.1 to C.sub.4 alkyl methacrylates and mixtures thereof and from a second group consisting of glycol dimethacrylates and mixtures thereof. The paste may consist of 60 to 80 weight percent silver particles, 12 to 20 weight percent glass frit and 8 to 20 weight percent vehicle gel. The resin content of the vehicle gel may be one to ten weight percent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.