发明名称 |
Removal of etching mask in semiconductor or - prodn |
摘要 |
<p>In an intermediate production stage of a semiconductor device with an inverse voltage of at least 800V an etching mask consisting of a lacquer, polymerized by ultraviolet rays, has to be removed. This is done by treating the active part of the semiconductor with concentrated or fuming nitric acid, followed by rinsing in water and drying.</p> |
申请公布号 |
DE1911169(A1) |
申请公布日期 |
1970.09.17 |
申请号 |
DE19691911169 |
申请日期 |
1969.03.05 |
申请人 |
AKTIENGESELLSCHAFT BROWN,BOVERI & CIE |
发明人 |
DENIS CLERC,DIPL.-PHYS. |
分类号 |
G03F7/42;H01L21/311;H01L23/29 |
主分类号 |
G03F7/42 |
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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