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    • 4. 发明授权
    • Manufacturing method of a high aspect ratio shallow trench isolation region
    • 高深宽比浅沟槽隔离区的制造方法
    • US06858516B2
    • 2005-02-22
    • US10279511
    • 2002-10-23
    • Tzu-En HoChang Rong WuHsin-Jung Ho
    • Tzu-En HoChang Rong WuHsin-Jung Ho
    • H01L21/762H01L21/8242H01L21/76
    • H01L21/76224
    • A manufacturing method of a high aspect ratio shallow trench isolation region. A substrate with a trench therein is provided and placed into a chamber. A first insulation layer is formed on the substrate as well as inside the trench by high density plasma chemical vapor deposition. The majority of the first insulation layer outside the trench is removed by in situ etching using carbon fluoride as an etching gas with high selectivity for SiO2/SiN etching ratio, and a second insulation layer is formed on the first insulation layer by high density plasma chemical vapor deposition, filling the trench. According to the present invention, a high aspect ratio shallow trench isolation region without voids can thus be achieved.
    • 高宽比浅沟槽隔离区域的制造方法。 提供其中具有沟槽的衬底并将其放置在室中。 第一绝缘层通过高密度等离子体化学气相沉积形成在衬底上以及沟内。 通过使用氟化碳作为蚀刻气体的原位蚀刻除去沟槽外部的第一绝缘层的大部分,对SiO 2 / SiN蚀刻比率具有高选择性,并且通过高密度等离子体化学品在第一绝缘层上形成第二绝缘层 气相沉积,填充沟槽。 根据本发明,可以实现无空隙的高纵横比浅沟槽隔离区域。
    • 10. 发明授权
    • Method for forming shallow trench isolation
    • 形成浅沟槽隔离的方法
    • US06743728B2
    • 2004-06-01
    • US10322224
    • 2002-12-17
    • Tzu En HoChang Rong WuTung-Wang HuangShing-Yih Shih
    • Tzu En HoChang Rong WuTung-Wang HuangShing-Yih Shih
    • H01L21301
    • H01L21/76224H01L21/02129H01L21/02274H01L21/31051H01L21/31612H01L21/31625
    • A method for forming shallow trench isolation. A substrate is provided with a mask layer formed thereon. The mask layer is etched to expose a portion of the substrate, and the portion of the substrate is etched to form a trench. A liner layer is formed on the inside wall of the trench. A first dielectric layer and a sacrificial layer are sequentially deposited on the substrate such that the trench is substantially filled, wherein the first dielectric layer is formed by high density plasma chemical vapor deposition (HDPCVD). Portions of the first dielectric layer and the sacrificial layer are removed from the trench. A second dielectric layer is deposited on the substrate such that the trench is substantially filled, wherein the second dielectric layer is formed by high density plasma chemical vapor deposition (HDPCVD). A portion of the second dielectric layer is removed from the trench.
    • 一种形成浅沟槽隔离的方法。 衬底上形成有掩模层。 蚀刻掩模层以暴露衬底的一部分,并蚀刻衬底的该部分以形成沟槽。 衬垫层形成在沟槽的内壁上。 第一电介质层和牺牲层顺序地沉积在衬底上,使得沟槽基本上被填充,其中第一介电层通过高密度等离子体化学气相沉积(HDPCVD)形成。 第一电介质层和牺牲层的一部分从沟槽中去除。 第二电介质层沉积在衬底上,使得沟槽基本上被填充,其中第二电介质层通过高密度等离子体化学气相沉积(HDPCVD)形成。 第二电介质层的一部分从沟槽去除。