Circuit board and method of manufacturing the same
US5958600A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 1998 |
| Grant date | Sep 28, 1999 |
| Priority date | — |
| Expiry date | Jan 9, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31721
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
Disclosed are a highly reliable circuit board and a method of stably manufacturing the circuit board, wherein an insulator made from a specific organic insulating material is provided under a highly stressed conductor for preventing occurrence of cracks in the insulator. In addition, a method of correcting a wiring of a ceramic board is additionally adopted. The circuit board includes a thick film wiring board 1 having a first conductor pattern 2 and a thin film layer laminated on the first conductor pattern 2. The thin film layer includes a first insulator 5 on the first conductor pattern 2; a second insulator 10 on the first insulator 5; a second conductor pattern 8 formed on the first insulator 5 in such a manner as to partially pass through the first insulator 5 and to be electrically connected to the first conductor pattern 2; a wiring pattern 9 for circuit correction formed on the first insulator 5; and a third conductor pattern 11 passing through the first insulator 5 and the second insulator 10 and electrically connected to the second conductor pattern 8.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.