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    • 41. 发明授权
    • Method of making a semiconductor with copper passivating film
    • 用铜钝化膜制造半导体的方法
    • US6114234A
    • 2000-09-05
    • US338735
    • 1999-06-23
    • Sailesh M. MerchantSudhanshu MisraPradip K. Roy
    • Sailesh M. MerchantSudhanshu MisraPradip K. Roy
    • H01L21/321H01L21/768H01L21/4763H01L21/302H01L21/44H01L21/461
    • H01L21/7684H01L21/3212
    • A method of making a semiconductor with a passivating film for copper interconnects includes the step of etching a first set of trench openings within a second oxide layer and then through an etch stop layer that has been deposited over a first oxide layer on a semiconductor substrate. At least a second set of openings are etched in the first oxide layer within the bounds defined by each of a first set of openings. A copper layer is deposited and a passivating film formed on top of the deposited copper layer by depositing one of either a chromate or chromite on the deposited copper layer and forming a respective copper chromate or copper chromite composition. The passivating film is chemically mechanically polished with a slurry containing a respective nitric acid when the passivating film is formed from a chromite and ammonium hydroxide when the passivating film is formed from a chromate.
    • 制造具有用于铜互连的钝化膜的半导体的方法包括在第二氧化物层内蚀刻第一组沟槽开口,然后通过沉积在半导体衬底上的第一氧化物层上的蚀刻停止层的步骤。 在由第一组开口限定的界限内的第一氧化物层中蚀刻至少第二组开口。 通过在沉积的铜层上沉积铬酸盐或铬铁矿中的一种并形成各自的铬酸铜或亚铬酸铜组合物,沉积铜层和形成在沉积的铜层的顶部上的钝化膜。 当钝化膜由铬酸盐形成时,当钝化膜由铬铁矿和氢氧化铵形成时,钝化膜用含有各自硝酸的浆料进行化学机械抛光。
    • 47. 发明授权
    • Junction capacitor structure and fabrication method therefor in a dual damascene process
    • 板式电容器结构及其制造方法在双镶嵌工艺中
    • US06784478B2
    • 2004-08-31
    • US10260693
    • 2002-09-30
    • Sailesh M. MerchantYifeng W. Yan
    • Sailesh M. MerchantYifeng W. Yan
    • H01L27108
    • H01L28/60H01L21/76807H01L21/76895H01L23/5223H01L2924/0002H01L2924/00
    • An apparatus and fabrication process for a capacitor formed in conjunction with a dual damascene process. A bottom capacitor plate is electrically connected to an overlying first conductive via formed according to the dual damascene process. A top capacitor plate is connected to an overlying second conductive via. A dielectric material is disposed between the top and the bottom plates. The capacitor is formed by successively forming the bottom plate, the dielectric layer, and the top plate, patterning these layers as required after their formation. The first conductive via is formed over and electrically connected to the bottom plate and the second conductive via is formed over and connected to the top capacitor plate thereby providing for interconnection of the capacitor to other circuit elements by way of the dual damascene conductive runners connected to the conductive vias.
    • 一种与双镶嵌工艺结合形成的电容器的装置和制造方法。 底部电容器电极电连接到根据双镶嵌工艺形成的上覆的第一导电通孔。 顶部电容器板连接到上覆的第二导电通孔。 介电材料设置在顶板和底板之间。 电容器通过依次形成底板,电介质层和顶板形成,在形成之后根据需要对这些层进行图案化。 第一导电通孔形成在底板上并电连接到底板,并且第二导电通孔形成在顶部电容器板上并连接到顶部电容器板,从而通过连接到第二导电通孔的双镶嵌导电流道提供电容器与其它电路元件的互连 导电通孔。
    • 49. 发明授权
    • Method of forming metal oxide metal capacitors using multi-step rapid material thermal process and a device formed thereby
    • 使用多步快速材料热处理形成金属氧化物金属电容器的方法和由此形成的器件
    • US06495875B2
    • 2002-12-17
    • US09962641
    • 2001-09-25
    • Siddhartha BhowmikSailesh M. MerchantPradip K. RoySidhartha Sen
    • Siddhartha BhowmikSailesh M. MerchantPradip K. RoySidhartha Sen
    • H01L2976
    • H01L28/40
    • The present invention provides a method of forming a metal oxide metal (MOM)capacitor on a substrate, such as a silicon substrate, of a semiconductor wafer in a rapid thermal process (RTP) machine. The MOM capacitor is fabricated by forming a metal layer on the semiconductor substrate. The metal layer is then subjected to a first rapid thermal process in a substantially inert but nitrogen-free atmosphere that consumes a portion of the metal layer to form a first metal electrode layer and a silicide layer between the first metal electrode and the semiconductor substrate. The semiconductor wafer is then subjected to a second rapid thermal process. During this process, the remaining portion of the metal layer is oxidized to form a metal oxide on the first metal electrode, which serves as the dielectric layer of the MOM capacitor. Following the formation of the dielectric layer, a second metal electrode layer is then conventionally formed on the metal oxide, which completes the formation of the MOM capacitor. Preferably, the first electrode layer and the metal oxide layer are formed in a single RTP machine.
    • 本发明提供了一种在快速热处理(RTP)机器中在半导体晶片的衬底(例如硅衬底)上形成金属氧化物金属(MOM)电容器的方法。 通过在半导体衬底上形成金属层来制造MOM电容器。 然后在基本惰性但无氮的气氛中对金属层进行第一快速热处理,其消耗金属层的一部分以在第一金属电极和半导体衬底之间形成第一金属电极层和硅化物层。 然后对半导体晶片进行第二快速热处理。 在该过程中,金属层的剩余部分被氧化,在作为MOM电容器的电介质层的第一金属电极上形成金属氧化物。 在形成电介质层之后,通常在金属氧化物上形成第二金属电极层,从而完成MOM电容器的形成。 优选地,第一电极层和金属氧化物层在单个RTP机器中形成。