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经营范围
发明名称
SEMICONDUCTOR DEVICE
摘要
PURPOSE:To avoid punch-through phenomenon, by forming the region having comparatively higher impurity concentration to the part in contact with the first region of the first conduction type being the collector.
申请公布号
JPS53134374(A)
申请公布日期
1978.11.22
申请号
JP19770049385
申请日期
1977.04.28
申请人
SONY CORP
发明人
ASAHINA HIDEO;YAGI HAJIME
分类号
H01L21/331;H01L21/8228;H01L27/082;H01L29/73
主分类号
H01L21/331
代理机构
代理人
主权项
地址
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