Fishing – trapping – and vermin destroying
Patent
1991-02-04
1993-02-23
Hearn, Brian E.
Fishing, trapping, and vermin destroying
437209, 437214, 257777, H01L 2100, H01L 2102, H01L 2160, H01L 2188
Patent
active
051889846
ABSTRACT:
A semiconductor device is produced through processes that; ionized material is poured into a predetermined depth of a silicon substrate so as to be made into etching stopper layer, a predetermined area of the silicon substrate is etched up to the depth of the etching stopper layer so as to form a concave portion, a compound semiconductor chip is accommodated in the concave portion, insulating film is formed covering a space between the surrounding wall of the concave portion and the side wall of the compound semiconductor chip so as to be patterned, and that a second thin film circuit is so formed on the patterned insulating film as to connect between the electrodes on the compound semiconductor chip and a first thin film circuit which is previously formed on the surface of the silicon substrate.
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Everhart B.
Hearn Brian E.
Sumitomo Electric Industries Ltd.
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