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发明名称
蚀刻液
摘要
本发明系提供一种最后伴随药液的蒸发等之组成变化少、药液的交换频率少、且经时性的蚀刻率变化少而可均一地蚀刻氧化矽膜之蚀刻液。具体而言,其系关于含有氟化氢酸(a)、氟化铵(b)、及氟化氢与较氨之沸点高的硷所成之盐(c)之蚀刻液,且其中氟化铵(b)之浓度为8.2mol/kg以下,而氟化铵(b)及氟化氢与较氨之沸点高的硷所成之盐(c)之合计为9.5mol/kg以上之蚀刻液、其制造方法、以及使用该蚀刻液之蚀刻方法。
申请公布号
TWI408745
申请公布日期
2013.09.11
申请号
TW097112860
申请日期
2008.04.09
申请人
大金工业股份有限公司 日本
发明人
板野充司;中村新吾;毛塚健彦;渡边大佑
分类号
H01L21/308;H01L21/02
主分类号
H01L21/308
代理机构
代理人
林志刚 台北市中山区南京东路2段125号7楼
主权项
地址
日本
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