Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Patent
1987-09-18
1989-08-08
Pellinen, A. D.
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
174 523, 357 81, 357 79, 361388, H05K 720
Patent
active
048558699
ABSTRACT:
A chip carrier including a substrate having a plurality of pads formed on the upper and lower surfaces thereof and wirings to connect the pads. The chip carrier also includes an integrated circuit chip having a plurality of leads connected to corresponding ones of the pads. A first metal frame is included which is soldered to the upper surface of the substrate so as to surround the integrated circuit chip. The chip carrier also includes a second metal frame which is seam-welded to the upper end of the first metal frame so as to surround the integrated circuit chip and a plate is soldered to the upper end of the second metal frame so as to cover the integrated circuit chip.
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NEC Corporation
Pellinen A. D.
Thompson Greg
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