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    • 2. 发明授权
    • Semiconductor device having transistor
    • 具有晶体管的半导体器件
    • US06576963B2
    • 2003-06-10
    • US09992069
    • 2001-11-14
    • Beom-jun JinByeong-yun NamYoung-pil Kim
    • Beom-jun JinByeong-yun NamYoung-pil Kim
    • H01L2976
    • H01L21/76897H01L21/823475H01L29/6653Y10S257/90
    • A method of forming self-aligned contact holes exposing source/drain regions in a semiconductor substrate using only etch mask layers is provided. In the method, sacrificial spacers are formed of a material having an excellent etching selectivity to the etch mask layers at sidewalls of gate electrodes in a cell area. Also, an interlevel dielectric layer is formed of a material having an excellent etching selectivity to the etch mask layers. The sacrificial spacers are removed when forming the self-aligned contact holes. Dielectric spacers are formed of a material having a low dielectric constant, without considering its etching selectivity to the interlevel dielectric layer. Thus, a reduction in the operational speed of a semiconductor device having transistors can be prevented.
    • 提供了一种使用仅使用蚀刻掩模层在半导体衬底中暴露源/漏区的自对准接触孔的方法。 在该方法中,牺牲隔离物由对单元区域中的栅电极的侧壁处的蚀刻掩模层具有优良蚀刻选择性的材料形成。 此外,层间介电层由对蚀刻掩模层具有优异蚀刻选择性的材料形成。 当形成自对准的接触孔时,去除牺牲隔离物。 电介质间隔物由具有低介电常数的材料形成,而不考虑其对层间电介质层的蚀刻选择性。 因此,可以防止具有晶体管的半导体器件的操作速度的降低。
    • 7. 发明授权
    • Semiconductor memory device having self-aligned contacts and method of fabricating the same
    • 具有自对准触点的半导体存储器件及其制造方法
    • US06885052B2
    • 2005-04-26
    • US09790240
    • 2001-02-21
    • Tae-hyuk AhnMyeong-cheol KimJung-hyeon LeeByeong-yun NamGyung-jin Min
    • Tae-hyuk AhnMyeong-cheol KimJung-hyeon LeeByeong-yun NamGyung-jin Min
    • H01L27/10H01L21/60H01L21/8242H01L27/108H01L29/76H01L29/94H01L31/119
    • H01L27/10855H01L21/76897H01L27/10814H01L27/10888
    • A semiconductor memory device having self-aligned contacts, capable of preventing a short-circuit between contacts for bit lines and contacts for storage electrodes and improving a process margin, and a method of fabricating the same are provided. The semiconductor memory device having self-aligned contacts includes a plurality of gate electrode patterns arranged in parallel on a semiconductor substrate, in which a plurality of first spacers are formed along the sidewalls of the gate electrode patterns, a first interdielectric layer formed on the entire surface of a resultant in which the first spacers are formed, a plurality of bit line patterns arranged in parallel on the first interdielectric layer to be perpendicular to the gate electrode patterns, in which a plurality of second spacers are formed along the sidewalls of the bit line patterns, a plurality of contacts for bit lines self-aligned with the first spacers, a second interdielectric layer formed on the entire surface of a resultant in which the second spacers are formed, and a plurality of contacts for storage electrodes simultaneously self-aligned with the second and first spacers.
    • 一种具有自对准触点的半导体存储器件及其制造方法,其特征在于能够防止位线触点和存储电极触点之间的短路,并提高加工余量。 具有自对准触点的半导体存储器件包括平行布置在半导体衬底上的多个栅电极图案,其中多个第一间隔物沿着栅电极图案的侧壁形成,第一绝缘层整体形成 其中形成有第一间隔物的结果的表面,在第一电介质层上平行布置成垂直于栅极电极图案的多个位线图案,其中沿着该位的侧壁形成多个第二间隔物 线图案,用于与第一间隔物自对准的位线的多个触点,形成在其中形成有第二间隔物的结果的整个表面上的第二电介质层和用于存储电极的多个触点同时自对准 与第二和第一间隔物。
    • 9. 发明授权
    • Method for etching Pt film of semiconductor device
    • 蚀刻半导体器件的Pt膜的方法
    • US6004882A
    • 1999-12-21
    • US16022
    • 1998-01-30
    • Hyoun-woo KimByeong-yun NamByong-sun JuWon-jong Yoo
    • Hyoun-woo KimByeong-yun NamByong-sun JuWon-jong Yoo
    • C23F4/00H01L21/285H01L21/302H01L21/3065H01L21/3213H01L21/8242H01L27/108
    • H01L21/32136H01L21/28512
    • A method for etching a platinum (Pt) layer of a semiconductor device is provided which improves the etching slope of a sidewall of the platinum layer used as a storage node of the semiconductor device. The semiconductor device consists of a semiconductor substrate including a bottom layer on which various other layers are formed. Specifically, according to this invention, a Pt layer is formed on a bottom layer of a semiconductor substrate. An adhesive layer is then formed on the Pt layer while a mask layer is formed on the adhesive layer. After formation of the various layers, the mask layer and adhesive layer are patterned using an etching process to form a mask pattern and an adhesive layer mask pattern, respectively. The semiconductor substrate is then heated and an etching process is performned on the Pt layer using the mask pattern and the adhesive layer mask pattern to form etching slope sidewalls of the Pt layer having etching slopes close to vertical. Accordingly, the Pt electrodes of the semiconductor device of the present invention have a finer pattern than those of the prior art. Finally, overetching is done to remove the mask pattern.
    • 提供一种用于蚀刻半导体器件的铂(Pt)层的方法,其改善了用作半导体器件的存储节点的铂层的侧壁的蚀刻斜率。 半导体器件由包括其上形成有各种其它层的底层的半导体衬底组成。 具体地,根据本发明,在半导体衬底的底层上形成Pt层。 然后在Pt层上形成粘合剂层,同时在粘合剂层上形成掩模层。 在形成各层之后,使用蚀刻工艺对掩模层和粘合剂层进行图案化以分别形成掩模图案和粘合剂层掩模图案。 然后加热半导体衬底并使用掩模图案和粘合剂层掩模图案在Pt层上进行蚀刻处理,以形成具有接近垂直的蚀刻斜率的Pt层的蚀刻斜面侧壁。 因此,本发明的半导体器件的Pt电极具有比现有技术更精细的图案。 最后,进行过蚀刻以去除掩模图案。