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    • 1. 发明申请
    • METHOD OF FORMING ISOLATION LAYER IN SEMICONDUCTOR DEVICE
    • 在半导体器件中形成隔离层的方法
    • US20080268612A1
    • 2008-10-30
    • US11962611
    • 2007-12-21
    • Whee Won ChoCheol Mo JeongJung Geun KimSuk Joong KimJong Hye Cho
    • Whee Won ChoCheol Mo JeongJung Geun KimSuk Joong KimJong Hye Cho
    • H01L21/762
    • H01L21/76232
    • The present invention discloses to a method of forming an isolation layer in a semiconductor device. In particular, the method of forming an isolation layer in a semiconductor device of the present invention comprises the steps of providing a semiconductor substrate on which a trench is formed; forming spacers on side walls of the trench; forming a first insulating layer to fill a portion of the trench such that a deposition rate on the semiconductor substrate which is a bottom surface of the trench and exposed between the spacers is higher than that on a surface of the space; and forming a second insulating layer on the first insulating layer so as to fill the trench with the second insulating layer. An O3-TEOS layer on the exposed semiconductor substrate which is a bottom surface of the trench is grown faster than that on a surface of the spacer formed of an oxide layer or a nitride layer to prevent the O3-TEOS layers grown on the side walls from coming into contact with each other, and so it is possible to inhibit a generation of a seam and to enhance a gap-filling characteristic for the trench.
    • 本发明公开了一种在半导体器件中形成隔离层的方法。 特别地,本发明的半导体器件中形成隔离层的方法包括以下步骤:提供其上形成有沟槽的半导体衬底; 在沟槽的侧壁上形成间隔物; 形成第一绝缘层以填充所述沟槽的一部分,使得作为所述沟槽的底表面并暴露在所述间隔物之间​​的所述半导体衬底上的沉积速率高于所述空间的表面上的沉积速率; 以及在所述第一绝缘层上形成第二绝缘层以便用所述第二绝缘层填充所述沟槽。 作为沟槽底面的暴露的半导体衬底上的O 3 -TOS层比由氧化物层或氮化物层形成的间隔物的表面上生长得快,以防止O 在侧壁上生长的3层以上的层彼此接触,因此可以抑制接缝的产生并且增强沟槽的间隙填充特性。