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    • 3. 发明授权
    • Method for manufacturing semiconductor device
    • 制造半导体器件的方法
    • US5587328A
    • 1996-12-24
    • US572876
    • 1995-12-18
    • Kazuhiro Yoshida
    • Kazuhiro Yoshida
    • H01L29/812H01L21/027H01L21/285H01L21/338H01L21/265
    • H01L29/66863H01L21/0272H01L21/28587Y10S148/10Y10S438/948
    • A semiconductor device manufacturing method with which a GaAs MESFET and an integrated circuit using the same can be manufactured cheaply and with high yield by accurately forming a mushroom-shaped gate electrode with inexpensive equipment and a short process. The method includes the steps of: depositing a first mask layer on a semiconductor substrate; forming an opening in the first mask layer; causing the first mask layer to flow by heat-treating the semiconductor substrate; depositing a second mask layer on the first mask layer; forming in the second mask layer an opening larger than the opening in the first mask layer and exposing the opening in the first mask layer; and forming a gate electrode in the opening in the second mask layer.
    • 通过使用便宜的设备和短的工艺精确地形成蘑菇形栅电极,可以廉价地制造GaAs MESFET和使用其的集成电路的半导体器件制造方法。 该方法包括以下步骤:在半导体衬底上沉积第一掩模层; 在所述第一掩模层中形成开口; 通过热处理半导体衬底使第一掩模层流动; 在所述第一掩模层上沉积第二掩模层; 在所述第二掩模层中形成大于所述第一掩模层中的开口的开口并暴露所述第一掩模层中的所述开口; 以及在第二掩模层的开口中形成栅电极。
    • 9. 发明授权
    • Method of forming a quantum effect switching device
    • 形成量子效应开关器件的方法
    • US5096846A
    • 1992-03-17
    • US608406
    • 1990-11-02
    • John N. Randall
    • John N. Randall
    • H01L21/28H01L21/308H01L21/335
    • B82Y10/00H01L21/28H01L21/3085H01L29/66469Y10S148/10Y10S438/962
    • A method for forming a quantum effect switching device is disclosed which comprises the step of forming a heterostructure substrate 10. A silicon nitride layer 22 is formed on an outer surface of the substrate 10. An aluminum mask body 30 is formed using a lift-off procedure. Aluminum mask body 30 is then used to form a silicon nitride mask body 32 from the silicon nitride layer 22 using a CF.sub.4 /O.sub.2 reactive ion etch process. A boron trichloride etch process is then used to form a dual column structure 34 while removing the aluminum mask body 30. A buffered HF wet etch process removes the silicon nitride mask body 32. Separate metal contacts can then be made to electrically separate points on the outer surface of the dual column structure 34.
    • 公开了一种用于形成量子效应开关器件的方法,其包括形成异质结构衬底10的步骤。在衬底10的外表面上形成氮化硅层22.铝掩模体30使用剥离 程序。 然后使用铝掩模体30,使用CF4 / O2反应离子蚀刻工艺从氮化硅层22形成氮化硅掩模体32。 然后在去除铝掩模体30的同时,使用三氯化硼蚀刻工艺来形成双重柱结构34.缓冲的HF湿法蚀刻工艺去除氮化硅掩模体32.然后可以将独立的金属接触件电分离在 双柱结构34的外表面。