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
    • 9. 发明申请
    • Formation of Shallow Trench Isolation Using Chemical Vapor Etch
    • 使用化学蒸气蚀刻法形成浅沟槽隔离
    • US20100267172A1
    • 2010-10-21
    • US12426711
    • 2009-04-20
    • Ying XIAOChyi Shyuan CHERN
    • Ying XIAOChyi Shyuan CHERN
    • H01L21/66C23F1/08
    • H01L22/20H01L21/76224H01L22/12
    • A method includes measuring a depth of a shallow trench isolation (STI) region below a surface of a substrate. The STI region is filled with an oxide material. The substrate has a nitride layer above the surface. A thickness of the nitride layer is measured. A first chemical vapor etch (CVE) of the oxide material is performed, to partially form a recess in the STI region. The first CVE removes an amount of the oxide material less than the thickness of the nitride layer. The nitride layer is removed by dry etching. A remaining height of the STI region is measured after removing the nitride. A second CVE of the oxide material in the STI region is performed, based on the measured depth and the remaining height, to form at least one fin having a desired fin height above the oxide in the STI region without an oxide fence.
    • 一种方法包括测量衬底表面下面的浅沟槽隔离(STI)区域的深度。 STI区域填充有氧化物材料。 衬底在表面上方具有氮化物层。 测量氮化物层的厚度。 执行氧化物材料的第一化学气相蚀刻(CVE),以在STI区域中部分地形成凹陷。 第一CVE去除少于氮化物层的厚度的一定量的氧化物材料。 通过干蚀刻去除氮化物层。 在去除氮化物之后测量STI区的剩余高度。 基于测量的深度和剩余高度,执行STI区域中的氧化物材料的第二CVE,以形成在没有氧化物栅栏的STI区域中具有高于氧化物的所需翅片高度的至少一个翅片。