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    • 18. 发明申请
    • Method of making fully silicided gate electrode
    • 制作完全硅化栅电极的方法
    • US20060105557A1
    • 2006-05-18
    • US10988113
    • 2004-11-12
    • Veit KleeSun-Oo Kim
    • Veit KleeSun-Oo Kim
    • H01L21/4763H01L21/3205
    • H01L29/6653H01L21/28097H01L29/66545H01L29/6656H01L29/7833
    • A method of making a semiconductor device for an integrated circuit chip. An interim gate electrode stack formed includes a top silicon portion patterned from a second silicon layer, a sandwiched oxide portion patterned from an etch stop oxide layer, and a bottom silicon portion patterned from a first silicon layer formed on a gate dielectric layer over a substrate. Etching the second silicon layer is stopped at the etch stop oxide layer. A spacer structure is formed about the interim gate electrode stack, and then the top silicon portion and the sandwiched oxide portion are removed. The spacer structure height may be reduced. A metal layer is formed over the bottom silicon portion of the interim gate electrode stack and over source and drain regions of the substrate, all of which are silicided at the same time to form a fully silicided (FUSI) gate electrode and silicided source and drain regions.
    • 制造用于集成电路芯片的半导体器件的方法。 形成的中间栅极电极堆叠包括从第二硅层图案化的顶部硅部分,从蚀刻停止氧化物层图案化的夹层氧化物部分和从在衬底上形成的栅极电介质层上形成的第一硅层图案化的底部硅部分 。 蚀刻第二硅层在蚀刻停止氧化物层处停止。 围绕临时栅电极堆叠形成间隔结构,然后去除顶部硅部分和夹层氧化物部分。 可以减小间隔件结构的高度。 在中间栅极电极堆叠的底部硅部分上方和衬底的源极和漏极区域之上形成金属层,所有这些都被同时硅化以形成完全硅化(FUSI)栅极电极和硅化物源极和漏极 地区。