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    • 6. 发明申请
    • METHOD FOR PATTERNING A METAL GATE
    • 用于绘制金属门的方法
    • US20100112811A1
    • 2010-05-06
    • US12431838
    • 2009-04-29
    • Matt YehShun Wu LinChung-Ming WangChi-Chun Chen
    • Matt YehShun Wu LinChung-Ming WangChi-Chun Chen
    • H01L21/28
    • H01L21/823842H01L21/823828H01L21/82385H01L27/0207H01L29/66545
    • The present disclosure provides a method for fabricating a semiconductor device. The method includes forming first, second, third, and fourth gate structures on a semiconductor substrate, each gate structure having a dummy gate, removing the dummy gate from the first, second, third, and fourth gate structures, thereby forming first, second, third, and fourth trenches, respectively, forming a metal layer to partially fill in the first, second, third, and fourth trenches, forming a first photoresist layer over the first, second, and third trenches, etching a portion of the metal layer in the fourth trench, removing the first photoresist layer, forming a second photoresist layer over the second and third trenches, etching the metal layer in the first trench and the remaining portion of the metal layer in the fourth trench, and removing the second photoresist layer.
    • 本公开提供了一种用于制造半导体器件的方法。 该方法包括在半导体衬底上形成第一,第二,第三和第四栅极结构,每个栅极结构具有虚拟栅极,从第一,第二,第三和第四栅极结构去除伪栅极,从而形成第一, 第三沟槽和第四沟槽,分别形成金属层以部分地填充在第一,第二,第三和第四沟槽中,在第一,第二和第三沟槽上形成第一光致抗蚀剂层,蚀刻金属层的一部分 第四沟槽,去除第一光致抗蚀剂层,在第二和第三沟槽上形成第二光致抗蚀剂层,蚀刻第一沟槽中的金属层和第四沟槽中金属层的剩余部分,以及去除第二光致抗蚀剂层。