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    • 1. 发明授权
    • Methods of etching platinum group metal film and forming lower electrode of capacitor
    • 蚀刻铂族金属膜并形成电容器的下电极的方法
    • US06169009A
    • 2001-01-02
    • US09203337
    • 1998-12-02
    • Byong-sun JuHyoun-woo KimChang-jin KangJoo-tae MoonByeong-yun Nam
    • Byong-sun JuHyoun-woo KimChang-jin KangJoo-tae MoonByeong-yun Nam
    • H01L2120
    • C23F4/00H01L21/32136H01L28/60
    • A method of etching a platinum group metal film uses a gas mixture containing argon (Ar), oxygen (O2) and halogen gases and a method of forming a lower electrode of a capacitor uses the etching method. The gas mixture contains O2, Ar, and a third component, preferably a halogen, e.g., chlorine (Cl2) or hydrogen bromide (HBr). In the method of forming a lower electrode, a conductive film containing a metal belonging to a platinum (Pt) group is formed on a semiconductor substrate, a hard mask partially exposing the conductive film is then formed on the conductive film. Then, the exposed conductive film is dry-etched using the hard mask as an etching mask and a three-component gas mixture containing argon (Ar) and oxygen (O2), to form a conductive film pattern beneath the hard mask, and the hard mask is then removed.
    • 蚀刻铂族金属膜的方法使用包含氩(Ar),氧(O 2)和卤素气体的气体混合物,并且形成电容器的下电极的方法使用蚀刻方法。 气体混合物含有O 2,Ar和第三组分,优选卤素,例如氯(Cl 2)或溴化氢(HBr)。 在形成下电极的方法中,在半导体衬底上形成含有属于铂(Pt)基团的金属的导电膜,然后在导电膜上形成部分地暴露导电膜的硬掩模。 然后,使用硬掩模作为蚀刻掩模和含有氩(Ar)和氧(O 2)的三组分气体混合物来干燥暴露的导电膜,以在硬掩模下形成导电膜图案,并且硬 然后取下面具。
    • 4. 发明申请
    • Method of forming fine patterns using double patterning process
    • 使用双重图案化工艺形成精细图案的方法
    • US20080113511A1
    • 2008-05-15
    • US11730264
    • 2007-03-30
    • Sang-joon ParkYong-hyun KwonJun SeoSung-il ChoChang-jin KangJae-kyu Ha
    • Sang-joon ParkYong-hyun KwonJun SeoSung-il ChoChang-jin KangJae-kyu Ha
    • H01L21/311
    • H01L21/0337H01L21/0338H01L21/31144H01L21/76816H01L21/76897
    • A double pattern method of forming a plurality of contact holes in a material layer formed on a substrate is disclosed. The method forms a parallel plurality of first hard mask patterns separated by a first pitch in a first direction on the material layer, a self-aligned parallel plurality of second hard mask patterns interleaved with the first hard mask patterns and separated from the first hard mask patterns by a buffer layer to form composite mask patterns, and a plurality of upper mask patterns in a second direction intersecting the first direction to mask selected portions of the buffer layer in conjunction with the composite mask patterns. The method then etches non-selected portions of the buffer layer using the composite hard mask patterns and the upper mask patterns as an etch mask to form a plurality of hard mask holes exposing selected portions of the material layer, and then etches the selected portions of the material layer to form the plurality of contact holes.
    • 公开了一种在形成在基板上的材料层中形成多个接触孔的双重图案方法。 该方法形成在材料层上沿第一方向以第一间距分开的平行多个第一硬掩模图案,与第一硬掩模图案交错并与第一硬掩模分离的自对准并行多个第二硬掩模图案 通过缓冲层形成图案以形成复合掩模图案,以及与第一方向相交的第二方向的多个上掩模图案,以与复合掩模图案一起掩蔽缓冲层的选定部分。 然后,该方法使用复合硬掩模图案和上掩模图案作为蚀刻掩模蚀刻缓冲层的未选择部分,以形成暴露材料层的选定部分的多个硬掩模孔,然后蚀刻所选择的部分 所述材料层形成所述多个接触孔。
    • 6. 发明授权
    • Method of forming fine patterns using double patterning process
    • 使用双重图案化工艺形成精细图案的方法
    • US07531449B2
    • 2009-05-12
    • US11730264
    • 2007-03-30
    • Sang-joon ParkYong-hyun KwonJun SeoSung-il ChoChang-jin KangJae-kyu Ha
    • Sang-joon ParkYong-hyun KwonJun SeoSung-il ChoChang-jin KangJae-kyu Ha
    • H01L21/4763
    • H01L21/0337H01L21/0338H01L21/31144H01L21/76816H01L21/76897
    • A double pattern method of forming a plurality of contact holes in a material layer formed on a substrate is disclosed. The method forms a parallel plurality of first hard mask patterns separated by a first pitch in a first direction on the material layer, a self-aligned parallel plurality of second hard mask patterns interleaved with the first hard mask patterns and separated from the first hard mask patterns by a buffer layer to form composite mask patterns, and a plurality of upper mask patterns in a second direction intersecting the first direction to mask selected portions of the buffer layer in conjunction with the composite mask patterns. The method then etches non-selected portions of the buffer layer using the composite hard mask patterns and the upper mask patterns as an etch mask to form a plurality of hard mask holes exposing selected portions of the material layer, and then etches the selected portions of the material layer to form the plurality of contact holes.
    • 公开了一种在形成在基板上的材料层中形成多个接触孔的双重图案方法。 该方法形成在材料层上沿第一方向以第一间距分开的平行多个第一硬掩模图案,与第一硬掩模图案交错并与第一硬掩模分离的自对准并行多个第二硬掩模图案 通过缓冲层形成图案以形成复合掩模图案,以及与第一方向相交的第二方向的多个上掩模图案,以与复合掩模图案一起掩蔽缓冲层的选定部分。 然后,该方法使用复合硬掩模图案和上掩模图案作为蚀刻掩模蚀刻缓冲层的未选择部分,以形成暴露材料层的选定部分的多个硬掩模孔,然后蚀刻所选择的部分 所述材料层形成所述多个接触孔。
    • 9. 发明授权
    • Method of forming tungsten pattern for a semiconductor device
    • 形成半导体器件的钨图案的方法
    • US6143654A
    • 2000-11-07
    • US229337
    • 1999-01-13
    • Jin-hwan HahmChang-jin Kang
    • Jin-hwan HahmChang-jin Kang
    • H01L21/28H01L21/3205H01L21/3213H01L23/52H01L21/44
    • H01L21/32135H01L21/32139
    • A capping film having a lower etch rate than a tungsten film is formed thereon and a photoresist layer is formed on the capping film. Preferably, the capping film is a titanium-based layer or an aluminum-based layer. After a photoresist pattern is formed by exposing and developing the photoresist film, the tungsten film is patterned by a dry etch method. During the etching of the tungsten film, the capping film reacts with the etching material to form a polymer which serves as a hard mask for the tungsten film. Preferably, the capping film also has a lower reflectivity at the exposing wavelength for the photoresist than the tungsten film, so the exposure of the photoresist may be controlled. Alternatively, or additionally, an anti-reflective film is provided between the capping film and the photoresist to further reduce the effect of the reflection of the tungsten film. Thus, patterning failures can be prevented. Such a method is particularly advantageous when the tungsten film pattern formed thereby is to be used as a bit line in a semiconductor device, particularly a pattern having a design rule of 0.34 .mu.m or less.
    • 在其上形成具有比钨膜蚀刻速率更低的覆盖膜,并且在封盖膜上形成光致抗蚀剂层。 优选地,封盖膜是钛基层或铝基层。 在通过曝光和显影光致抗蚀剂膜形成光致抗蚀剂图案之后,通过干蚀刻方法对钨膜进行图案化。 在钨膜的蚀刻期间,封盖膜与蚀刻材料反应形成用作钨膜的硬掩模的聚合物。 优选地,封盖膜在光致抗蚀剂的曝光波长处还具有比钨膜更低的反射率,因此可以控制光致抗蚀剂的曝光。 或者或另外,在覆盖膜和光致抗蚀剂之间提供抗反射膜,以进一步降低钨膜的反射效果。 因此,可以防止图案化故障。 当由此形成的钨膜图形用作半导体器件中的位线时,特别是设计规则为0.34μm或更小的图案,这种方法是特别有利的。
    • 10. 发明授权
    • Method of forming fine contact hole and method of fabricating semiconductor device using block copolymers
    • 形成微细接触孔的方法和使用嵌段共聚物制造半导体器件的方法
    • US07803517B2
    • 2010-09-28
    • US11590663
    • 2006-10-31
    • Sung-chan ParkChang-jin Kang
    • Sung-chan ParkChang-jin Kang
    • G03F1/00B28B19/00
    • H01L21/76816H01L21/0337H01L21/0338H01L21/31144
    • A method of forming a contact hole includes forming a plurality of lower patterns on a substrate. An insulation layer is formed on the lower patterns. A self-assemble induction layer is formed on the insulation layer. A recess is formed in the self-assemble induction layer in alignment with the lower patterns. A block copolymer layer is formed in the recess to form a polymer domain at a distance from a sidewall of the recess and a polymer matrix surrounding the polymer domain. The polymer domain is removed. The self-assemble induction layer is etched using the polymer matrix as a mask to form an opening through the self-assemble induction layer to expose the insulation layer. The insulation layer exposed by the opening is etched using the self-assemble induction layer as a mask so as to form a contact hole.
    • 形成接触孔的方法包括在基板上形成多个下部图案。 在下部图案上形成绝缘层。 在绝缘层上形成自组装感应层。 在自组装感应层中形成与下部图形对准的凹部。 在凹部中形成嵌段共聚物层,以形成与凹陷的侧壁相距一定距离的聚合物结构域和围绕聚合物结构域的聚合物基体。 去除聚合物结构域。 使用聚合物基质作为掩模蚀刻自组装感应层,以通过自组装感应层形成开口以暴露绝缘层。 使用自组装感应层作为掩模蚀刻由开口暴露的绝缘层,以形成接触孔。