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
    • 6. 发明授权
    • Shallow trench isolation structure and method of forming the same
    • 通过各向同性蚀刻具有暴露的顶部结构的衬垫氮化物层形成浅沟槽隔离结构的方法
    • US5960297A
    • 1999-09-28
    • US887137
    • 1997-07-02
    • Kazuo Saki
    • Kazuo Saki
    • H01L21/76H01L21/762H01L21/8242H01L27/108
    • H01L21/76224
    • An isolation structure is provided by a method which includes forming a pad oxide layer on a semiconductor substrate and then forming a pad nitride layer on the pad oxide layer. An opening is then formed which extends through the pad nitride layer, the pad oxide layer, and into the semiconductor substrate. The pad nitride layer is then isotropically etched, thereby pulling-back the pad nitride layer from the portion of the opening extending through the pad oxide layer. An insulating layer is formed to fill in the opening including the portion of the opening formed by the pulling-back of the pad nitride layer. The deposited insulating layer is then planarized using the pulled-back nitride layer as a stopper layer. The pulled-back pad nitride layer and the pad oxide layer are then removed.
    • 通过一种方法提供隔离结构,该方法包括在半导体衬底上形成衬垫氧化层,然后在衬垫氧化物层上形成衬垫氮化物层。 然后形成延伸穿过衬垫氮化物层,衬垫氧化物层并进入半导体衬底的开口。 然后对衬垫氮化物层进行各向同性蚀刻,从而从延伸穿过焊盘氧化物层的开口的部分拉回焊盘氮化物层。 形成绝缘层以填充包括由衬垫氮化物层的拉回形成的开口的部分的开口。 然后使用拉回的氮化物层作为阻挡层来平坦化沉积的绝缘层。 然后去除拉回衬垫氮化物层和衬垫氧化物层。