| 发明名称 |
SEMICONDUCTOR DEVICE HAVING ELECTRODE OF STEPPED STRUCTURE AND ITS PRODUCTION |
| 摘要 |
PURPOSE:To considerably improve high frequency characteristics by reducing regions not necessary for transistor operation as far as possible thereby reducing external base resistance and collector-base junction capacity. |
| 申请公布号 |
JPS539469(A) |
申请公布日期 |
1978.01.27 |
| 申请号 |
JP19760083493 |
申请日期 |
1976.07.15 |
| 申请人 |
NIPPON TELEGRAPH & TELEPHONE |
发明人 |
ASANO MASARU;SAKAI TETSUSHI;SUNOHARA YOSHIO |
| 分类号 |
H01L21/3205;H01L21/28;H01L21/288;H01L21/331;H01L21/768;H01L23/532;H01L29/41;H01L29/43;H01L29/45;H01L29/73 |
主分类号 |
H01L21/3205 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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