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    • 1. 发明申请
    • SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD OF THE SAME
    • 半导体器件及其制造方法
    • US20110001246A1
    • 2011-01-06
    • US12883031
    • 2010-09-15
    • Takeshi FURUSAWATakao KamoshimaMasatsugu AmishiroNaohito SuzumuraShoichi FukuiMasakazu Okada
    • Takeshi FURUSAWATakao KamoshimaMasatsugu AmishiroNaohito SuzumuraShoichi FukuiMasakazu Okada
    • H01L23/48
    • H01L21/76832H01L21/76834H01L21/76883
    • The reliability of a semiconductor device having an embedded wire in the lowest layer wire is improved. In a main surface of a semiconductor substrate, MISFETs are formed and over the main surface, insulating films 10, 11 are formed. In the insulating films 10, 11 a contact hole is formed and a plug is embedded therein. Over the insulating film 11 in which the plug is embedded, insulating films 14, 15, 16 are formed and an opening is formed in the insulating films 14, 15, 16 and a wire is embedded therein. The insulating film 15 is an etching stopper film when etching the insulating film 16 in order to form the opening, containing silicon and carbon. The insulating film 11 has a high hygroscopicity and the insulating film 15 has a low moisture resistance, however, by interposing the insulating film 14 therebetween and making the insulating film 14 have a higher density of the number of Si (silicon) atoms than that of the insulating film 11, an electrically weak interface is prevented from being formed.
    • 提高了在最低层布线中具有嵌入线的半导体器件的可靠性。 在半导体衬底的主表面中,形成MISFET,并且在主表面上形成绝缘膜10,11。 在绝缘膜10,11中形成有接触孔,并且插入插头。 在插入插头的绝缘膜11上形成绝缘膜14,15,16,并且在绝缘膜14,15,16中形成开口,并且在其中嵌入线。 绝缘膜15是在蚀刻绝缘膜16以形成包含硅和碳的开口时的蚀刻停止膜。 绝缘膜11具有高的吸湿性,绝缘膜15具有低的耐湿性,然而,通过在其间插入绝缘膜14,使得绝缘膜14具有比Si(硅)原子数更高的Si(硅)原子数 绝缘膜11,电阻弱的界面被防止形成。
    • 7. 发明授权
    • Method of manufacturing semiconductor device and semiconductor device
    • 制造半导体器件和半导体器件的方法
    • US06645863B2
    • 2003-11-11
    • US09986001
    • 2001-11-07
    • Hiroki TakewakaTakao KamoshimaJunko Izumitani
    • Hiroki TakewakaTakao KamoshimaJunko Izumitani
    • H01L2100
    • H01L21/7684H01L21/28556H01L21/3212H01L21/76877H01L23/544H01L2223/54426H01L2223/54453H01L2924/0002H01L2924/00
    • The invention provides a method of manufacturing a semiconductor device which can reduce or prevent abrasive material from remaining in an indentation in a surface after a CMP process. After forming a titanium nitride film (5), a tungsten film (6) is formed on an entire surface. The temperature is set at approximately 430° C. for the reaction and, first, 50 sccm of WF6, 10 sccm of SiH4 and 1000 sccm of H2 are used in the atmosphere of 30 Torr of Ar, N2 so as to form a seed layer with a film thickness of approximately 100 nm. After that, in the atmosphere of 80 Torr of Ar, N2, 75 sccm of WF6 and 500 sccm of H2 are used as a reactive gas so as to layer a film with a thickness of approximately 300 nm. The tungsten film (6) has grains (6a) in a pillar form of which the grain diameter is small to the degree that the abrasive material (50) used in the CMP process does not easily become caught in the gaps between the grains. Concretely, the tungsten film (6) has grains (6a) of which the diameter is approximately 10 nm to 20 nm.
    • 本发明提供一种半导体器件的制造方法,其可以在CMP工艺之后减少或防止研磨材料残留在表面的压痕中。在形成氮化钛膜(5)之后,形成钨膜(6) 整个表面。 对于反应,温度设定在约430℃,首先在30托的Ar,N2的气氛中使用50sccm的WF6,10sccm的SiH4和1000sccm的H 2,以形成种子层 膜厚度约为100nm。 之后,在80Torr的Ar,N2的气氛中,使用75sccm的WF6和500sccm的H 2作为反应气体,以便层厚约300nm的膜。 钨膜(6)具有柱状晶粒(6a),其晶粒直径小到在CMP工艺中使用的研磨材料(50)不容易被捕获在晶粒之间的间隙中的程度。 具体地说,钨膜(6)具有直径约为10nm〜20nm的晶粒(6a)。
    • 10. 发明申请
    • Interconnection structure
    • 互连结构
    • US20070029677A1
    • 2007-02-08
    • US11488634
    • 2006-07-19
    • Takao KamoshimaYasuhisa FujiiTakeshi Masamitsu
    • Takao KamoshimaYasuhisa FujiiTakeshi Masamitsu
    • H01L23/48
    • H01L21/76843H01L21/76844H01L21/76877H01L23/5226H01L23/53238H01L2924/0002H01L2924/00
    • An interconnection structure includes a lower interconnection layer formed on a substrate and composed of a copper layer, an interlayer insulating layer formed on the lower interconnection layer and having a via reaching the lower interconnection layer, an upper interconnection layer electrically connected to the lower interconnection layer through the via, and composed of a copper layer formed in the interlayer insulating layer, and a barrier metal layer formed between the upper interconnection layer and the interlayer insulating layer. The barrier metal layer has an opening in a bottom portion of the via, and through that opening, the upper interconnection layer comes in direct contact with the lower interconnection layer in the bottom portion of the via. Thus, an interconnection structure suppressing concentration of voids in an interconnection under a via due to stress migration can be attained.
    • 互连结构包括形成在基板上并由铜层构成的下互连层,形成在下布线层上并具有到达下互连层的通孔的层间绝缘层,与互连层下电连接的上互连层 并且由形成在层间绝缘层中的铜层构成,以及形成在上互连层和层间绝缘层之间的阻挡金属层。 阻挡金属层在通孔的底部具有开口,并且通过该开口,上互连层与通孔的底部中的下互连层直接接触。 因此,可以获得抑制由于应力迁移导致的通孔内的互连中的空隙浓度的互连结构。