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    • 81. 发明授权
    • Bulk finFET with controlled fin height and high-K liner
    • 散装finFET具有可控翅片高度和高K衬垫
    • US08841188B2
    • 2014-09-23
    • US13604658
    • 2012-09-06
    • Alexander ReznicekThomas N. AdamKangguo ChengAli Khakifirooz
    • Alexander ReznicekThomas N. AdamKangguo ChengAli Khakifirooz
    • H01L21/336
    • H01L29/785H01L21/823821H01L27/0924H01L29/0684H01L29/1054H01L29/66795
    • A method of forming a semiconductor device that includes forming a material stack on a semiconductor substrate, the material stack including a first dielectric layer on the substrate, a second dielectric layer on the first dielectric layer, and a third dielectric layer on the second dielectric layer, wherein the second dielectric layer is a high-k dielectric. Openings are formed through the material stack to expose a surface of the semiconductor substrate. A semiconductor material is formed in the openings through the material stack. The first dielectric layer is removed selectively to the second dielectric layer and the semiconductor material. A gate structure is formed on a channel portion of the semiconductor material. In some embodiments, the method may provide a plurality of finFET or trigate semiconductor device in which the fin structures of those devices have substantially the same height.
    • 一种形成半导体器件的方法,包括在半导体衬底上形成材料堆叠,所述材料堆叠包括在所述衬底上的第一介电层,所述第一电介质层上的第二电介质层和所述第二电介质层上的第三电介质层 ,其中所述第二电介质层是高k电介质。 通过材料堆叠形成开口以暴露半导体衬底的表面。 通过材料堆叠在开口中形成半导体材料。 第一电介质层被选择性地去除到第二电介质层和半导体材料。 栅极结构形成在半导体材料的沟道部分上。 在一些实施例中,该方法可以提供多个finFET或者触发半导体器件,其中这些器件的鳍结构具有基本上相同的高度。