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    • 3. 发明授权
    • Method for and structure formed from fabricating a relatively deep isolation structure
    • 通过制造相对较深的隔离结构形成的方法和结构
    • US06794269B1
    • 2004-09-21
    • US10324989
    • 2002-12-20
    • Prabhuram GopalanBiju ParameshwaranKrishnaswamy RamkumarHanna BamnolkerSundar Narayanan
    • Prabhuram GopalanBiju ParameshwaranKrishnaswamy RamkumarHanna BamnolkerSundar Narayanan
    • H01L2176
    • H01L21/763H01L21/76202
    • A method is provided which includes forming a deep isolation structure within a semiconductor topography. In some cases, the method may include forming a first isolation structure within a semiconductor layer and etching an opening within the isolation structure to expose the semiconductor layer. In addition, the method may include etching the semiconductor layer to form a trench extending through the isolation structure and at least part of the semiconductor layer. In some cases, the method may include removing part of a first fill layer deposited within the trench such that an upper surface of the fill layer is below an upper portion of the trench. In such an embodiment, the vacant portion of the trench may be filled with a second fill layer. In yet other embodiments, the method may include planarizing the first fill layer within the trench and subsequently oxidizing an upper portion of the fill layer.
    • 提供了一种方法,其包括在半导体形貌内形成深度隔离结构。 在一些情况下,该方法可以包括在半导体层内形成第一隔离结构并蚀刻隔离结构内的开口以暴露半导体层。 此外,该方法可以包括蚀刻半导体层以形成延伸穿过隔离结构和半导体层的至少一部分的沟槽。 在一些情况下,该方法可以包括去除沉积在沟槽内的第一填充层的部分,使得填充层的上表面在沟槽的上部下方。 在这样的实施例中,沟槽的空缺部分可以填充第二填充层。 在其他实施例中,该方法可以包括平坦化沟槽内的第一填充层,随后氧化填充层的上部。
    • 4. 发明授权
    • Reducing defect formation within an etched semiconductor topography
    • 减少蚀刻半导体形貌内的缺陷形成
    • US07129178B1
    • 2006-10-31
    • US10074888
    • 2002-02-13
    • Benjamin C. E. SchwarzChan Lon YanHanna BamnolkerDaniel J. Arnzen
    • Benjamin C. E. SchwarzChan Lon YanHanna BamnolkerDaniel J. Arnzen
    • H01L21/302H01L21/461
    • H01L21/32136H01L21/31116H01L21/31138H01L21/32137
    • A method is provided which includes etching one or more layers in an etch chamber while introducing a noble gas heavier than helium into the etch chamber. In a preferred embodiment, the introduction of such a noble gas may reduce the formation of defects within an etched portion of the semiconductor topography. Such defects may include bilayer mounds of nitride and a material comprising silicon, for example. In some embodiments, the method may include etching a stack of layers within a single etch chamber. The stack of layers may include, for example, a nitride layer interposed between an anti-reflective layer and an underlying layer. In addition, the single etch chamber may be a plasma etch chamber designed to etch materials comprising silicon. As such, the method may include etching an anti-reflective layer in a plasma etch chamber designed to etch materials comprising silicon.
    • 提供了一种方法,其包括在蚀刻室中蚀刻一个或多个层,同时将比氦更重的惰性气体引入蚀刻室。 在优选实施例中,引入这种惰性气体可以减少半导体形貌的蚀刻部分内的缺陷的形成。 这样的缺陷可以包括例如氮化物的双层堆积物和包含硅的材料。 在一些实施例中,该方法可以包括在单个蚀刻室内蚀刻一层层。 层叠层可以包括例如介于抗反射层和下层之间的氮化物层。 此外,单蚀刻室可以是设计用于蚀刻包含硅的材料的等离子体蚀刻室。 因此,该方法可以包括在设计成蚀刻包含硅的材料的等离子体蚀刻室中蚀刻抗反射层。