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    • 1. 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。
    • 3. 发明授权
    • Method of forming a high aspect ratio shallow trench isolation
    • 形成高深宽比浅沟槽隔离的方法
    • US06828239B2
    • 2004-12-07
    • US10121504
    • 2002-04-11
    • Tzu En-HoChang Rong WuHsin-Jung Ho
    • Tzu En-HoChang Rong WuHsin-Jung Ho
    • H01L21301
    • H01L21/76224
    • A method of forming a high aspect ratio shallow trench isolation in a semiconductor substrate. The method includes the steps of forming a hard mask layer with a certain pattern on the semiconductor substrate, etching a portion of the semiconductor substrate not covered by the hard mask layer to form a high aspect ratio shallow trench in the semiconductor substrate; forming an oxide liner on the bottom and sidewall of the high aspect ratio shallow trench; performing a LPCVD to form a first oxide layer to fill the high aspect ratio shallow trench, a void being formed in the first oxide layer; etching a portion of the first oxide layer to a certain depth of the high aspect ratio shallow trench and to expose the void; and performing a HDPCVD to form a second oxide layer to fill the high aspect ratio shallow trench.
    • 一种在半导体衬底中形成高纵横比浅沟槽隔离的方法。 该方法包括以下步骤:在半导体衬底上形成具有一定图案的硬掩模层,蚀刻未被硬掩模层覆盖的半导体衬底的一部分,以在半导体衬底中形成高纵横比的浅沟槽; 在高纵横比浅沟槽的底部和侧壁上形成氧化物衬垫; 执行LPCVD以形成第一氧化物层以填充高纵横比浅沟槽,在第一氧化物层中形成空隙; 将所述第一氧化物层的一部分蚀刻到所述高纵横比浅沟槽的一定深度并暴露所述空隙; 并且执行HDPCVD以形成第二氧化物层以填充高纵横比浅沟槽。
    • 5. 发明授权
    • Method for increasing area of a trench capacitor
    • 增加沟槽电容器面积的方法
    • US06693006B2
    • 2004-02-17
    • US10322111
    • 2002-12-17
    • Hsin-Jung HoChang Rong WuYi-Nan ChenTung-Wang Huang
    • Hsin-Jung HoChang Rong WuYi-Nan ChenTung-Wang Huang
    • H01L218242
    • H01L27/1087H01L21/3086H01L29/66181H01L29/945
    • A method for increasing area of a trench capacitor. First, a first oxide layer and a first nitride layer are sequentially formed on a substrate. An opening is formed through the first oxide layer and the first nitride layer into the substrate. A part of the first oxide layer exposed in the opening is removed to form a first recess, and then a second nitride layer is formed therein. A second oxide layer is formed in the lower portion of the opening. After a third nitride layer is formed in the upper portion of the opening, the second oxide layer is removed. The substrate in the opening is etched using the first nitride layer, the second nitride layer and the third nitride layer as a mask to form a second recess in the lower portion of the opening. The second nitride layer and the third nitride layer are then removed.
    • 一种增加沟槽电容器面积的方法。 首先,在基板上依次形成第一氧化物层和第一氮化物层。 通过第一氧化物层和第一氮化物层形成到衬底中的开口。 去除暴露在开口中的第一氧化物层的一部分以形成第一凹部,然后在其中形成第二氮化物层。 第二氧化物层形成在开口的下部。 在开口的上部形成第三氮化物层后,除去第二氧化物层。 使用第一氮化物层,第二氮化物层和第三氮化物层作为掩模来蚀刻开口中的衬底,以在开口的下部形成第二凹部。 然后去除第二氮化物层和第三氮化物层。
    • 6. 发明授权
    • Method for forming a deep trench capacitor buried plate
    • 形成深沟槽电容器掩埋板的方法
    • US07232718B2
    • 2007-06-19
    • US10605234
    • 2003-09-17
    • Chih-Han ChangHsin-Jung HoChang-Rong WuChien-Jung Sun
    • Chih-Han ChangHsin-Jung HoChang-Rong WuChien-Jung Sun
    • H01L21/8242
    • H01L27/1087
    • A method for forming a deep trench capacitor buried plate. A substrate having a pad oxide and a pad nitride is provided. A deep trench is formed in the substrate. A doped silicate film is deposited on a sidewall of the deep trench. A sacrificial layer is deposited in the deep trench, and etched back to expose parts of the doped silicate film. Then, an etching process is performed to remove the exposed doped silicate film and parts of the pad oxide for forming a recess. The sacrificial layer is removed. A silicon nitride layer is deposited to fill the recess and to cover the doped silicate film. Finally, a thermal oxidation process is performed to form a doped ion region. The silicon nitride layer is removed. The doped silicate film is removed.
    • 一种形成深沟槽电容器掩埋板的方法。 提供具有衬垫氧化物和衬垫氮化物的衬底。 在衬底中形成深沟槽。 掺杂的硅酸盐膜沉积在深沟槽的侧壁上。 牺牲层沉积在深沟槽中,并被回蚀以暴露部分掺杂的硅酸盐膜。 然后,进行蚀刻处理以去除暴露的掺杂硅酸盐膜和用于形成凹槽的衬垫氧化物的一部分。 牺牲层被去除。 沉积氮化硅层以填充凹部并覆盖掺杂的硅酸盐膜。 最后,进行热氧化工艺以形成掺杂的离子区域。 去除氮化硅层。 去除掺杂的硅酸盐膜。
    • 10. 发明申请
    • METHOD FOR FORMING A DEEP TRENCH CAPACITOR BURIED PLATE
    • 形成深层电容电容板的方法
    • US20050059207A1
    • 2005-03-17
    • US10605234
    • 2003-09-17
    • Chih-Han ChangHsin-Jung HoChang-Rong WuChien-Jung Sun
    • Chih-Han ChangHsin-Jung HoChang-Rong WuChien-Jung Sun
    • H01L21/20H01L21/8242
    • H01L27/1087
    • A method for forming a deep trench capacitor buried plate. A substrate having a pad oxide and a pad nitride is provided. A deep trench is formed in the substrate. A doped silicate film is deposited on a sidewall of the deep trench. A sacrificial layer is deposited in the deep trench, and etched back to expose parts of the doped silicate film. Then, an etching process is performed to remove the exposed doped silicate film and parts of the pad oxide for forming a recess. The sacrificial layer is removed. A silicon nitride layer is deposited to fill the recess and to cover the doped silicate film. Finally, a thermal oxidation process is performed to form a doped ion region. The silicon nitride layer is removed. The doped silicate film is removed.
    • 一种形成深沟槽电容器掩埋板的方法。 提供具有衬垫氧化物和衬垫氮化物的衬底。 在衬底中形成深沟槽。 掺杂的硅酸盐膜沉积在深沟槽的侧壁上。 牺牲层沉积在深沟槽中,并被回蚀以暴露部分掺杂的硅酸盐膜。 然后,进行蚀刻处理以去除暴露的掺杂硅酸盐膜和用于形成凹槽的衬垫氧化物的一部分。 牺牲层被去除。 沉积氮化硅层以填充凹部并覆盖掺杂的硅酸盐膜。 最后,进行热氧化工艺以形成掺杂的离子区域。 去除氮化硅层。 去除掺杂的硅酸盐膜。