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    • 6. 发明申请
    • METHOD FOR FORMING CONTACT IN SEMICONDUCTOR DEVICE
    • 在半导体器件中形成接触的方法
    • US20090130841A1
    • 2009-05-21
    • US12163434
    • 2008-06-27
    • Yong-Tae CHOJae-Kyun LEESang- Rok OH
    • Yong-Tae CHOJae-Kyun LEESang- Rok OH
    • H01L21/4763
    • H01L21/76897H01L21/76804H01L21/76844
    • A method for forming a contact in a semiconductor device, comprises providing a substrate, forming a plurality of conductive patterns and a passivation layer surrounding the conductive patterns over the substrate, forming an insulation layer covering the conductive patterns and passivation layer, forming a mask pattern for a contact over the insulation layer, forming a first opening by performing an isotropic etch process on the insulation layer using the mask pattern as an etch mask, wherein the isotropic etch process is performed until the insulation layer meets the passivation layer, forming a barrier layer over a resultant structure of the first opening, exposing the insulation layer by performing an anisotropic etch process using the mask pattern as an etch mask, and forming a second opening exposing the substrate by performing a self aligned contact (SAC) process using the mask pattern and barrier layer as an etch mask.
    • 一种用于在半导体器件中形成接触的方法,包括提供衬底,在衬底上形成多个导电图案和围绕导电图案的钝化层,形成覆盖导电图案和钝化层的绝缘层,形成掩模图案 对于绝缘层上的接触,通过使用掩模图案作为蚀刻掩模对绝缘层进行各向同性蚀刻工艺形成第一开口,其中执行各向同性蚀刻工艺,直到绝缘层与钝化层相交,形成屏障 在所述第一开口的结果结构上方,通过使用所述掩模图案作为蚀刻掩模执行各向异性蚀刻工艺来暴露所述绝缘层,以及通过使用所述掩模通过执行自对准接触(SAC)工艺来形成第二开口,所述第二开口暴露所述衬底 图案和阻挡层作为蚀刻掩模。