会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 8. 发明授权
    • Wet etching of silicon containing antireflective coatings
    • 含硅抗反射涂层的湿蚀刻
    • US09418865B2
    • 2016-08-16
    • US14140737
    • 2013-12-26
    • Intermolecular Inc.International Business Machines Corporation
    • Gregory NowlingJohn Fitzsimmons
    • H01L21/311
    • H01L21/31111H01L21/31133H01L21/67086
    • Provided are methods for processing semiconductor substrates or, more specifically, etching silicon containing antireflective coatings (SiARCs) from the substrates while preserving silicon oxides layers disposed on the same substrates. An etching solution including sulfuric acid and hydrofluoric acid may be used for these purposes. In some embodiments, the weight ratio of sulfuric acid to hydrofluoric acid in the etching solution is between about 15:1 and 100:1 (e.g., about 60:1). The temperature of the etching solution may be between about 30° C. and 50° C. (e.g., about 40° C., during etching). It has been found that such processing conditions provide a SiARC etching rate of at least about 50 nanometers per minute and selectivity of SiARC over silicon oxide of greater than about 10:1 or even greater than about 50:1. The same etching solution may be also used to remove photoresist, organic dielectric, and titanium nitride.
    • 提供了用于处理半导体衬底的方法,或者更具体地,从衬底中蚀刻含硅抗反射涂层(SiARCs),同时保留设置在相同衬底上的氧化硅层。 包括硫酸和氢氟酸的蚀刻溶液可以用于这些目的。 在一些实施方案中,蚀刻溶液中硫酸与氢氟酸的重量比为约15:1至100:1(例如约60:1)。 蚀刻溶液的温度可以在约30℃至50℃之间(例如在蚀刻期间约为40℃)。 已经发现,这样的处理条件提供至少约50纳米每分钟的SiARC蚀刻速率,SiARC相对于氧化硅的选择性大于约10:1或甚至大于约50:1。 也可以使用相同的蚀刻溶液去除光致抗蚀剂,有机电介质和氮化钛。