Fishing – trapping – and vermin destroying
Patent
1989-07-26
1991-05-07
Chaudhuri, Olik
Fishing, trapping, and vermin destroying
437211, 437937, H01L 21321, H01L 2504
Patent
active
050136887
ABSTRACT:
An improved electric device and manufacturing method for the same are described. The device is, for example, an IC chip clothed with moulding. In advance of the moulding process, the IC chip is coated with silicon nitride in order to protect the IC chip from moisture invaded through cracks or gaps. The coating of silicon nitride is carried out after cleaning the surface of the IC chip by plasma CVD.
REFERENCES:
patent: 4579609 (1986-04-01), Reif et al.
patent: 4585537 (1986-04-01), Nakayama et al.
patent: 4749587 (1988-06-01), Bergmann et al.
patent: 4758775 (1988-07-01), Fujisaki et al.
Hirose Naoki
Imatou Shinji
Ishida Noriya
Koyama Itaru
Nakashita Kazuhisa
Chaudhuri Olik
Graybill David E.
Semiconductor Energy Laboratory Co,. Ltd.
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