Etching a substrate: processes – Forming or treating electrical conductor article – Forming or treating of groove or through hole
Patent
1998-02-10
1999-12-28
Klemanski, Helene
Etching a substrate: processes
Forming or treating electrical conductor article
Forming or treating of groove or through hole
216 41, 216 51, 216 56, 216 65, 216 67, 216 81, 257706, 257712, 257930, 438105, 252 70, B44C 122, H01L 2334, H01L 213065
Patent
active
060077301
ABSTRACT:
A diamond polycrystal body having metal films on its upper and lower surfaces is cut in the vertical direction using a laser to form a diamond polycrystal body piece having upper and lower surfaces and a cut surface connecting the upper and lower surfaces. The cut surface may be damaged and include graphite resulting from the laser cutting. To remove the damage and the graphite, the cut surface of the diamond polycrystal body piece is then plasma-treated. Thereby a prescribed degree of electrical insulation between the metallized upper and lower surfaces can be ensured.
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Kumazawa Yoshiaki
Shiomi Hiromu
Fasse W. F.
Fasse W. G.
Klemanski Helene
Sumitomo Electric Industries Ltd.
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