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    • 3. 发明授权
    • Tungsten plug formation
    • 钨塞形成
    • US06235632B1
    • 2001-05-22
    • US09006495
    • 1998-01-13
    • Takeshi NogamiGuarionex MoralesMinh Van Ngo
    • Takeshi NogamiGuarionex MoralesMinh Van Ngo
    • H01L2144
    • H01L21/76864H01L21/76841H01L21/76843H01L21/76855H01L21/76877H01L21/76895
    • In a preferred embodiment, there is disclosed a method of forming a tungsten plug at the via level. A metal line is formed in a top portion of a first insulating layer. A second insulating layer is formed on the first insulating layer and over an exposed surface of the metal line. An etching process is applied to a region of the second insulating layer formed over the exposed surface of the metal line to create a contact hole within the region. The metal line is exposed at the region. A tungsten nitride thin film is deposited over the second insulating layer and the exposed metal line. A blanket tungsten thin film is deposited to fill the contact hole and to form a planar layer successively to the depositing of the tungsten nitride thin film. The tungsten nitride thin film and the blanket tungsten thin film are chemically mechanically polished until the upper surface of the second insulating layer is exposed.
    • 在优选实施例中,公开了一种在通孔级形成钨丝塞的方法。 金属线形成在第一绝缘层的顶部。 在第一绝缘层上和金属线的暴露表面上形成第二绝缘层。 对形成在金属线的暴露表面上的第二绝缘层的区域施加蚀刻处理,以在该区域内形成接触孔。 金属线暴露在该地区。 在第二绝缘层和暴露的金属线上沉积氮化钨薄膜。 沉积覆盖的钨薄膜以填充接触孔并且连续地形成平坦层以沉积氮化钨薄膜。 化学机械抛光氮化钨薄膜和覆盖钨薄膜,直到第二绝缘层的上表面露出。
    • 6. 发明授权
    • Forming an encapsulating layer after deposition of a dielectric comprised of corrosive material
    • 在沉积由腐蚀性材料构成的电介质之后形成封装层
    • US06472336B1
    • 2002-10-29
    • US09511585
    • 2000-02-23
    • Suzette K. PangrleMinh Van NgoRichard J. Huang
    • Suzette K. PangrleMinh Van NgoRichard J. Huang
    • H01L2131
    • H01L21/76801C23C16/401H01L21/31629H01L23/53295H01L2924/0002H01L2924/00
    • Insulating material is formed to surround interconnect structures of an integrated circuit. A first semiconductor wafer is placed in a reaction chamber for forming the insulating material surrounding the interconnect structures of the integrated circuit on the first semiconductor wafer. A corrosive dielectric material having low dielectric constant is deposited to surround the interconnect structures, and the corrosive dielectric material fills any gaps between the interconnect structures. Deposition of the corrosive dielectric material is performed within the reaction chamber, and the corrosive dielectric material is deposited on the reaction chamber during deposition of the corrosive dielectric material on the first semiconductor wafer. An encapsulating layer is formed over the corrosive dielectric material on the first semiconductor wafer and on the reaction chamber to prevent contact of the corrosive dielectric material to any exposed structure of a second semiconductor wafer to be subsequently placed into the reaction chamber when such an exposed structure is reactive with the corrosive dielectric material.
    • 绝缘材料形成为围绕集成电路的互连结构。 将第一半导体晶片放置在用于形成围绕第一半导体晶片上的集成电路的互连结构的绝缘材料的反应室中。 沉积具有低介电常数的腐蚀介电材料以包围互连结构,并且腐蚀介电材料填充互连结构之间的任何间隙。 在反应室内进行腐蚀性电介质材料的沉积,并且在第一半导体晶片上沉积腐蚀性电介质材料期间,腐蚀性电介质材料沉积在反应室上。 在第一半导体晶片上和反应室上的腐蚀介质材料上形成封装层,以防止腐蚀性电介质材料与任何暴露的第二半导体晶片的结构接触,随后将其放置在反应室中, 与腐蚀性介电材料反应。