Photoresist composition and printed circuit boards and packages made therewith
US4882245A · kind A · utility
102Cited by
25References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1987 |
| Grant date | Nov 21, 1989 |
| Priority date | — |
| Expiry date | Jun 12, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/26
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A photocurable composition which is useful as a permanent resist in the manufacture of printed circuit boards and packages of such boards comprises a multifunctional epoxidized resin, a reactive diluent, a cationic photoinitiator and, optionally, an exposure indicator, a coating aid and a photosensitizer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.