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    • 22. 发明授权
    • Semiconductor device and manufacturing method thereof
    • 半导体装置及其制造方法
    • US07936016B2
    • 2011-05-03
    • US12413980
    • 2009-03-30
    • Toshiaki TsutsumiTomonori OkudairaKeiichiro KashiharaTadashi Yamaguchi
    • Toshiaki TsutsumiTomonori OkudairaKeiichiro KashiharaTadashi Yamaguchi
    • H01L29/76
    • H01L23/485H01L21/28518H01L2924/0002H01L2924/00
    • There is provided a semiconductor device having a metal silicide layer which can suppress the malfunction and the increase in power consumption of the device. The semiconductor device has a semiconductor substrate containing silicon and having a main surface, first and second impurity diffusion layers formed in the main surface of the semiconductor substrate, a metal silicide formed over the second impurity diffusion layer, and a silicon nitride film and a first interlayer insulation film sequentially stacked over the metal silicide. In the semiconductor device, a contact hole penetrating through the silicon nitride film and the first interlayer insulation film, and reaching the surface of the metal silicide is formed. The thickness of a portion of the metal silicide situated immediately under the contact hole is smaller than the thickness of a portion of the metal silicide situated around the contact hole.
    • 提供了具有金属硅化物层的半导体器件,其可以抑制器件的故障和功率消耗的增加。 半导体器件具有包含硅并具有主表面的半导体衬底,形成在半导体衬底的主表面中的第一和第二杂质扩散层,形成在第二杂质扩散层上的金属硅化物,以及氮化硅膜和第一 层间绝缘膜依次层叠在金属硅化物上。 在半导体器件中,形成穿过氮化硅膜和第一层间绝缘膜并到达金属硅化物表面的接触孔。 位于接触孔正下方的金属硅化物的一部分的厚度小于位于接触孔周围的金属硅化物的一部分的厚度。
    • 27. 发明授权
    • Semiconductor memory device
    • 半导体存储器件
    • US5519237A
    • 1996-05-21
    • US264117
    • 1994-06-22
    • Hiromi ItohTomonori OkudairaKeiichiro Kashihara
    • Hiromi ItohTomonori OkudairaKeiichiro Kashihara
    • H01L27/10H01L27/108H01L29/68
    • H01L27/10808
    • A first interlayer insulating film having a second contact hole is formed on a main surface of a semiconductor substrate 1 in a peripheral circuitry. A second plug electrode of the same material as a first plug electrode in a memory cell array is formed in the second contact hole. A pad layer is formed over the second plug electrode and a top surface of the first interlayer insulating film. The pad layer and a capacitor lower electrode are made of the same material. The pad layer is covered with the second interlayer insulating film. A third contact hole is formed at a portion of the second interlayer insulating film located above the pad layer. A first aluminum interconnection layer is formed in the third contact hole. Thereby, a contact can be formed easily between the interconnection layer and the main surface of the semiconductor substrate in the peripheral circuitry of a DRAM, and a manufacturing process can be simplified.
    • 具有第二接触孔的第一层间绝缘膜形成在外围电路中的半导体衬底1的主表面上。 在第二接触孔中形成有与存储单元阵列中的第一插头电极相同材料的第二插头电极。 在第二插头电极和第一层间绝缘膜的顶表面上形成衬垫层。 焊盘层和电容器下电极由相同的材料制成。 衬垫层被第二层间绝缘膜覆盖。 在位于焊盘层上方的第二层间绝缘膜的一部分处形成第三接触孔。 在第三接触孔中形成第一铝互连层。 因此,可以在DRAM的外围电路中的互连层和半导体衬底的主表面之间容易地形成接触,并且可以简化制造工艺。