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发明公开
CN103460346A 杂质扩散用涂布液 无效 - 撤回

杂质扩散用涂布液
摘要：
一种杂质扩散用涂布液，其含有：聚乙烯醇系树脂（A）、杂质（B）以及沸点为100℃以上的多元醇（C），该多元醇（C）的含量为涂布液中的70重量%以上。因此，适合于丝网印刷，可实现长时间的连续印刷、间隔了空闲期后的印刷，即便将皮膜形成后的半导体基板以直立状态烧成，也能够得到电阻值的上下的差别小的半导体。
摘要（英）：

A coating liquid for diffusing an impurity, comprising (A) a polyvinyl alcohol-based resin, (B) an impurity and (C) a polyhydric alcohol having a boiling point of 100 C or higher, wherein the content of the polyhydric alcohol (C) in the coating liquid is 70% by weight or more. Therefore, the coating liquid is suitable for screen printing and enables continuous printing for a long time and printing after an idle period, and even if a semiconductor substrate after forming a coating film is fired in an upright state, a semiconductor in which a difference in resistance between an upper portion and a lower portion is small is obtained.

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