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    • 2. 发明申请
    • METHOD TO FABRICATE ADJACENT SILICON FINS OF DIFFERING HEIGHTS
    • 制造不同高度的相邻硅片的方法
    • WO2009032576A3
    • 2009-05-07
    • PCT/US2008074161
    • 2008-08-25
    • INTEL CORPDOYLE BRIAN SJIN BEEN-YIHSHAH UDAY
    • DOYLE BRIAN SJIN BEEN-YIHSHAH UDAY
    • H01L21/8244H01L27/11
    • H01L29/785H01L21/02381H01L21/02532H01L21/02639H01L21/823431H01L21/845H01L27/0886H01L29/66795
    • A method to fabricate adjacent silicon fins of differing heights comprises providing a silicon substrate having an isolation layer deposited thereon, patterning the isolation layer to form first and second isolation structures, patterning the silicon substrate to form a first silicon fin beneath the first isolation structure and a second silicon fin beneath the second isolation structure, depositing an insulating layer on the substrate, planarizing the insulating layer to expose top surfaces of the first and second isolation structures, depositing and patterning a masking layer to mask the first isolation structure but not the second isolation structure, applying a wet etch to remove the second isolation structure and expose the second silicon fin, epitaxially depositing a silicon layer on the second silicon fin, and recessing the insulating layer to expose at least a portion of the first silicon fin and at least a portion of the second silicon fin.
    • 制造具有不同高度的相邻硅鳍的方法包括:提供其上沉积有隔离层的硅衬底;图案化隔离层以形成第一和第二隔离结构;图案化硅衬底以在第一隔离结构下形成第一硅鳍;以及 在所述第二隔离结构下方的第二硅鳍状物,在所述衬底上沉积绝缘层,平坦化所述绝缘层以暴露所述第一和第二隔离结构的顶表面,沉积并图案化掩模层以掩蔽所述第一隔离结构而不是所述第二 施加湿蚀刻以去除第二隔离结构并暴露第二硅鳍;在第二硅鳍上外延沉积硅层;以及使绝缘层凹陷以暴露第一硅鳍的至少一部分,并且至少 第二硅鳍的一部分。