Metal working – Method of mechanical manufacture – Electrical device making
Patent
1993-11-01
1994-11-08
Arbes, Carl J.
Metal working
Method of mechanical manufacture
Electrical device making
437206, 437217, H01R 4300
Patent
active
053614909
ABSTRACT:
Deformation of TAB tapes due to temperature changes is prevented by thermo-mechanical leads. In one embodiment of the invention, a semiconductor device (30) includes an electronic component (31) and a TAB tape. The tape includes a carrier film (12) and electrical leads (20) formed on the carrier film. The electrical leads are electrically coupled to the electronic component. Also included on the carrier film are thermo-mechanical leads (32) which are formed in opposing regions of the carrier film, regions which are typically void of leads. The thermo-mechanical leads have approximately the same lead pitch as the electrical leads in order to provide a uniform distribution of stresses across the TAB tape upon exposure to varying temperatures.
REFERENCES:
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patent: 4721993 (1988-01-01), Walter
patent: 4803540 (1989-02-01), Moyer et al.
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patent: 5053852 (1991-01-01), Biswas et al.
Research Disclosure Document, "Stress Relief for Tape Automated Bonding (TAB) Tape," Oct. 1988, No. 29401, anonymously disclosed, Kenneth Mason Publications, Ltd., England.
Higgins, III Leo M.
Karpman Maurice S.
Arbes Carl J.
Goddard Patricia S.
Motorola Inc.
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