Active solid-state devices (e.g. – transistors – solid-state diode – Lead frame
Patent
1995-01-19
1995-11-14
Crane, Sara W.
Active solid-state devices (e.g., transistors, solid-state diode
Lead frame
257672, H01L 2348, H01L 2946, H01L 2954, H01L 2962
Patent
active
054669677
ABSTRACT:
A lead frame for a multiplicity of terminals, in particular of large-scale integrated semiconductor chips, arranged in a very confined space and consisting of metallic conductors which converge from large outer spacings toward the terminals and can be connected to the terminals. The lead frame allows a high number of terminals with a low degree of spacing of the conductors to be produced. The conductors are produced in the outer region by a conventional production method and at their ends pointing toward the terminals by laser cutting of a uniformly metallic material.
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Patterson et al., "Laser Dambar And Flash Removal For Plastic Molded Surface Mount Components With Lead Spacing Under 20 Mils", Fifth IEEE/CHMT Int'l Electronic Manufacturing Technology Symposium, Oct. 10-12, 1988, pp. 18-21.
Clark S. V.
Crane Sara W.
LSI Logic Products GmbH
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