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    • 7. 发明申请
    • Novel gate structure and method of forming the gate dielectric with mini-spacer
    • 具有微型间隔物形成栅极电介质的新型栅极结构和方法
    • US20050127459A1
    • 2005-06-16
    • US11048205
    • 2005-02-01
    • Yuan-Hung ChiuMing-Huan TsaiFang-Cheng ChenHun-Jan Tao
    • Yuan-Hung ChiuMing-Huan TsaiFang-Cheng ChenHun-Jan Tao
    • H01L21/265H01L21/8238H01L29/78H01L29/80
    • H01L21/2652H01L29/517H01L29/518H01L29/78
    • A field effect transistor gate structure and a method of fabricating the gate structure with a high-k gate dielectric material and high-k spacer are described. A gate pattern or trench is first etched in a dummy organic or inorganic film deposited over a silicon substrate with source/drain regions. A high-k dielectric material liner is then deposited on all exposed surfaces. Excess poly-silicon gate conductor film is then deposited within and over the trench to provide adequate overburden. Poly-silicon is then planarized with chemical mechanical polishing or etch-back methods such that the high-k material film on top of the dummy film surface is removed during this step. In the final step, the dummy film is disposed off, leaving the final transistor gate structure with high-k gate dielectric and high-k spacer surrounding the gate conductor poly-silicon, with the entire gate structure fabricated to form an FET device on a silicon substrate.
    • 描述了场效应晶体管栅极结构和制造具有高k栅极介电材料和高k隔离物的栅极结构的方法。 首先在具有源极/漏极区域的硅衬底上沉积的虚拟有机或无机膜中蚀刻栅极图案或沟槽。 然后将高k电介质材料衬垫沉积在所有暴露的表面上。 然后将过多的多晶硅栅极导体膜沉积在沟槽内和沟槽上,以提供足够的覆盖层。 然后通过化学机械抛光或蚀刻方法对多晶硅进行平面化,使得在该步骤期间去除虚拟膜表面顶部的高k材料膜。 在最后的步骤中,将虚设薄膜放开,留下最终的晶体管栅极结构,其中高k栅极电介质和围绕栅极导体多晶硅的高k隔离层,整个栅极结构被制成以形成FET器件 硅衬底。
    • 10. 发明授权
    • Selectivity oxide-to-oxynitride etch process using a fluorine containing gas, an inert gas and a weak oxidant
    • 使用含氟气体,惰性气体和弱氧化剂的选择性氧化物 - 氧氮化物蚀刻工艺
    • US06436841B1
    • 2002-08-20
    • US09949506
    • 2001-09-10
    • Ming Huan TsaiBao-Ching PenMei-Ru KuoHun-Jan Tao
    • Ming Huan TsaiBao-Ching PenMei-Ru KuoHun-Jan Tao
    • H01L21302
    • H01L21/76897H01L21/31116H01L21/3144
    • A method of forming a borderless contact, comprising the following steps. A substrate having an exposed conductive structure is provided. An oxynitride etch stop layer is formed over the substrate and the exposed conductive structure. An oxide dielectric layer is formed over the oxynitride etch stop layer. The oxide dielectric layer is etched with an etch process having a high selectivity of oxide-to-oxynitride to form a contact hole therein exposing a portion of the oxynitride etch stop layer over at least a portion of the exposed conductive structure. The etch process not appreciably etching the oxynitride etch stop layer and including: a fluorine containing gas; an inert gas; and a weak oxidant. The exposed portion of the oxynitride etch stop layer over at least a portion of the conductive structure is removed. A borderless contact is formed within the contact hole. The borderless contact being in electrical connection with at least a portion of the conductive structure.
    • 一种形成无边界接触的方法,包括以下步骤。 提供具有暴露的导电结构的衬底。 在衬底和暴露的导电结构之上形成氮氧化物蚀刻停止层。 在氧氮化物蚀刻停止层上形成氧化物介电层。 用具有高选择性的氧化物 - 氮氧化物的蚀刻工艺来蚀刻氧化物介电层,以在其中形成接触孔,使暴露的导电结构的至少一部分上的氮氧化物蚀刻停止层的一部分暴露。 蚀刻工艺不明显地蚀刻氧氮化物蚀刻停止层,并且包括:含氟气体; 惰性气体 和弱氧化剂。 除去导电结构的至少一部分上的氧氮化物蚀刻停止层的暴露部分。 在接触孔内形成无边界接触。 无边界接触与至少一部分导电结构电连接。