더미 게이트 형성 방법
    4.
    发明公开
    더미 게이트 형성 방법 审中-实审
    形成双门的方法

    公开(公告)号:KR1020140079316A

    公开(公告)日:2014-06-26

    申请号:KR1020130157228

    申请日:2013-12-17

    Abstract: Provided is a method of forming a dummy gate in manufacturing a field effect transistor. The method of forming a dummy gate includes (a) a first process of exposing a workpiece having a polycrystalline silicon layer to plasma of HBr gas, wherein the polycrystalline silicon layer is etched to form a dummy semiconductor part having a pair of side surfaces in the polycrystalline silicon layer, and a protection film is formed based on a by-product of etching on the pair of side surfaces in such a manner that the thickness of the protection film becomes smaller toward a lower end of the dummy semiconductor part; and (b) a second process of further exposing the workpiece to the plasma of HBr gas after the first process.

    Abstract translation: 提供了在制造场效应晶体管时形成伪栅极的方法。 形成虚拟栅极的方法包括:(a)将具有多晶硅层的工件暴露于HBr气体的等离子体的第一工艺,其中蚀刻多晶硅层以形成具有一对侧表面的虚拟半导体部件 多晶硅层和基于一对侧表面上的蚀刻副产物的保护膜,使得保护膜的厚度朝向虚拟半导体部件的下端变小; 和(b)在第一工序之后将工件进一步暴露于HBr气体的等离子体的第二工序。

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