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    • 1. 发明授权
    • Dry etching method of insulating film
    • 绝缘膜干蚀刻法
    • US07585776B2
    • 2009-09-08
    • US11668057
    • 2007-01-29
    • Nobuyuki NegishiMasatoshi OyamaMasahiro Sumiya
    • Nobuyuki NegishiMasatoshi OyamaMasahiro Sumiya
    • H01L21/302
    • H01L21/76816H01L21/31116H01L21/31144H01L28/40
    • It is an object to provide a high-precision method for forming deep holes of elliptic pattern, which can improve hole directionality on the short diameter side, the hole directionality being possibly deteriorated as a result of excessive polymer deposition in the initial etching stage. The insulating film dry etching method is for treating a work on which a mask of elliptic pattern is formed with a fluorocarbon gas, wherein the etching process is divided into a first and second steps after the etching is started, the first step operating to deposit a polymer at a rate set lower than that in the second step, and controlling step time in accordance with ellipticity (long diameter/short diameter ratio) of the elliptic pattern.
    • 本发明的目的是提供一种用于形成椭圆形深孔的高精度方法,其可以改善短径侧的孔方向性,由于在初始蚀刻阶段中聚合物沉积过多,孔方向性可能劣化。 绝缘膜干式蚀刻方法是用碳氟化合物气体处理形成有椭圆图案掩模的工件,其中蚀刻工序在蚀刻开始后分为第一步骤和第二步骤,第一步操作以沉积 聚合物,其速度设定为低于第二步骤,并且根据椭圆图案的椭圆率(长径/短径比)控制步骤时间。
    • 3. 发明申请
    • PLASMA ETCHING METHOD FOR ETCHING AN OBJECT
    • 用于蚀刻对象的等离子体蚀刻方法
    • US20100297849A1
    • 2010-11-25
    • US12512084
    • 2009-07-30
    • Masatoshi MiyakeNobuyuki NegishiMasatoshi OyamaTadamitsu KanekiyoMasaru Izawa
    • Masatoshi MiyakeNobuyuki NegishiMasatoshi OyamaTadamitsu KanekiyoMasaru Izawa
    • H01L21/3065
    • H01L21/31116H01L21/31144
    • The invention provides a plasma etching method capable of suppressing bowing of an opening of the object to be etched, and solving the lack of opening at a high aspect ratio portion in deep hole processing having a high aspect ratio. A plasma etching method for etching an object to be etched in a plasma etching apparatus using a mask patterned and formed on the object to be etched comprises sequentially performing a first step for etching the mask while attaching deposits on a side wall of an opening close to a surface of the mask pattern of the mask using fluorocarbon gas CxFy (x=1, 2, 3, 4, 5, 6, y=4, 5, 6, 8), and a second step for etching the object to be etched while removing the deposits attached to the side wall of the opening close to the surface of the mask pattern of the mask using fluorocarbon gas.
    • 本发明提供一种能够抑制待蚀刻物体的开口弯曲的等离子体蚀刻方法,并且解决了在具有高纵横比的深孔加工中在高纵横比部分缺少开口。 在等离子体蚀刻装置中使用图案化并形成在待蚀刻对象上的掩模来蚀刻待蚀刻物体的等离子体蚀刻方法包括:顺序地执行用于蚀刻掩模的第一步骤,同时将沉积物附着在靠近 使用碳氟化合物气体CxFy(x = 1,2,3,4,5,6,y = 4,5,6,8)的掩模的掩模图案的表面,以及蚀刻被蚀刻物体的第二步骤 同时使用碳氟化合物气体除去附着在开口的侧壁附近的沉积物的掩模图案的表面附近的沉积物。
    • 8. 发明授权
    • Method for fabrication semiconductor device
    • 半导体器件制造方法
    • US07372582B2
    • 2008-05-13
    • US10531700
    • 2002-10-18
    • Nobuyuki NegishiKenetsu YokogawaMasaru Izawa
    • Nobuyuki NegishiKenetsu YokogawaMasaru Izawa
    • G01B11/14
    • H01J37/32935H01J37/32091H01L21/31116H01L21/76802H01L22/12
    • The object of this invention is to provide a method for fabricating a semiconductor device in which the yield and productivity are improved. In the method for fabricating a semiconductor device according to the invention, a plasma etching system is prepared which includes a vacuum chamber 1, a susceptor 7 arranged in the vacuum chamber 1 to place a wafer 8, a gas introducing means 2 to introduce the material gas into the vacuum chamber and a high-frequency power introducing means 6. The gas introduced into the vacuum chamber by the gas introducing means 2 is converted into a plasma by the high-frequency power, and a plurality of holes are selectively formed in the oxide film 23 of a main wafer surface in a plasma atmosphere. In the hole forming step, light 15 having a continuous spectrum is irradiated on a flat portion and a hole portion of the main surface of the semiconductor wafer thereby to measure the reflectivity change in the flat portion and the hole portion.
    • 本发明的目的是提供一种制造其产率和生产率提高的半导体器件的方法。 在根据本发明的半导体器件的制造方法中,制备等离子体蚀刻系统,其包括真空室1,设置在真空室1中的基座7以放置晶片8,气体引入装置2将材料 气体进入真空室和高频电力引入装置6。 通过气体引入装置2引入真空室的气体通过高频电力转换为等离子体,并且在等离子体气氛中的主晶片表面的氧化物膜23中选择性地形成多个孔。 在孔形成步骤中,将具有连续光谱的光15照射在半导体晶片的主表面的平坦部分和孔部分上,从而测量平坦部分和孔部分中的反射率变化。
    • 9. 发明授权
    • Dry etching method and apparatus
    • 干蚀刻方法和设备
    • US07371690B2
    • 2008-05-13
    • US10924983
    • 2004-08-25
    • Nobuyuki NegishiMasaru IzawaKenetsu Yokogawa
    • Nobuyuki NegishiMasaru IzawaKenetsu Yokogawa
    • H01L21/461H01L21/302
    • H01L21/0276H01L21/0275H01L21/31116H01L21/31144H01L21/76802
    • A condition without using Ar as plasma gas is applied to processing of an organic anti-reflection-coating, which suppresses a spatter effect and decreases the cleavage of C—H and OC—O bonds in a resist. As a result, roughness of the resist after processing the anti-reflection-coating can be suppressed, and pitting and striations after processing a next film to be processed, that is an insulating film, can be prevented. For a rare gas to be used at the time of processing the insulating film, any one of Xe, Kr, a mixed gas of Ar and Xe, and a mixed gas of Ar and Kr is applied in place of Ar, giving rise to reduction in pitting and striations after etching. In addition, a dry etching method with less critical-dimension shift and excellence in both apparatus cost and throughput can be provided by performing resist modification and etching by turns.
    • 将不使用Ar作为等离子气体的条件用于有机防反射涂层的加工,其抑制飞溅效应并降低抗蚀剂中C-H和OC-O键的裂解。 结果,可以抑制加工抗反射涂层后的抗蚀剂的粗糙度,并且可以防止在处理下一个被加工膜(即绝缘膜)之后的点蚀和条纹。 对于在加工绝缘膜时使用的稀有气体,施加Xe,Kr,Ar和Xe的混合气体以及Ar和Kr的混合气体代替Ar,导致还原 蚀刻后的点蚀和条纹。 此外,通过进行抗蚀剂修饰和轮匝蚀刻,可以提供具有较小临界尺寸偏移和装置成本和生产率两者优异的干蚀刻方法。