Fishing – trapping – and vermin destroying
Patent
1988-07-01
1990-05-15
Hearn, Brian E.
Fishing, trapping, and vermin destroying
437228, 437946, 148 333, 148DIG161, H01L 2120
Patent
active
049258095
ABSTRACT:
A semiconductor wafer on which silicon or the like is epitaxially grown and p-type or n-type impurities are doped and which has at the rear surface except for the peripheral edge portion thereof a blocking film for preventing jumping out of impurities therefrom which causes auto-doping, thereby preventing silicon particles from being produced at the peripheral surface and preventing the semiconductor wafer from being contaminated by the silicon particles during the manufacturing of a semiconductor device.
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"Semiconductor Silicon Manufacturing and Machining Using Diamond Tools", G, Janus, Burghausen.
Kamise Haruo
Yoshiharu Tetsujiro
Hearn Brian E.
Holtzman Laura
Kyushu Electronic Metal Co., Ltd.
Osaka Titanium Co., Ltd.
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