Lead frame with leads projecting alternately from opposite sides of a lead frame block
US5466966A · kind A · utility
11Cited by
4References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 14, 1995 |
| Grant date | Nov 14, 1995 |
| Priority date | — |
| Expiry date | Apr 14, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/14
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
The first step is forming belt-like resist films having a predetermined width on one and the other surfaces of a metal plate material alternately at a predetermined interval. The second step is etching the metal plate material from the one and other surfaces thereof to dissolve and remove portions of the metal plate material where the resist films are not formed, thereby forming a plurality of leads having a width corresponding to the resist films.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.