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    • 2. 发明授权
    • Etching of silicon oxide film
    • 刻蚀氧化硅膜
    • US09105586B2
    • 2015-08-11
    • US12078958
    • 2008-04-08
    • Shigeki TozawaYusuke Muraki
    • Shigeki TozawaYusuke Muraki
    • H01L21/306H01L21/311H01L21/67
    • H01L21/31138H01L21/67069H01L21/67155
    • An etching method includes preparing a target object such that a first oxide film made of silicon oxide containing at least one of B and P is formed on a substrate, a second oxide film made of silicon oxide containing neither of B and P is formed on the first oxide film, and a contact portion is present below an interface between the first oxide film and the second oxide film. The etching method further includes etching the second oxide film and the first oxide film, thereby forming a hole reaching the contact portion, and etching the first oxide film by a dry process using a gas containing HF, thereby expanding a portion of the hole adjacent to an upper side of the contact portion and inside the first oxide film.
    • 蚀刻方法包括制备目标物体,使得在基板上形成由含有B和P中的至少一个的氧化硅制成的第一氧化物膜,在不含有B和P的氧化硅中形成的第二氧化物膜形成在 第一氧化物膜和接触部分存在于第一氧化物膜和第二氧化物膜之间的界面之下。 蚀刻方法还包括蚀刻第二氧化物膜和第一氧化物膜,从而形成到达接触部分的孔,并且通过使用含有HF的气体的干法来蚀刻第一氧化物膜,从而使孔的一部分与 接触部分的上侧和第一氧化膜内部。
    • 6. 发明申请
    • Processing Method and Recording Medium
    • 处理方法和记录介质
    • US20100216296A1
    • 2010-08-26
    • US12084132
    • 2006-10-20
    • Yusuke MurakiShigeki TozawaTakehiko Orii
    • Yusuke MurakiShigeki TozawaTakehiko Orii
    • H01L21/20H01L21/306
    • H01L29/165H01L21/02057H01L29/66636H01L29/7834H01L29/7848
    • [Object] To provide a processing method capable of removing an oxide film adhering on a Si layer from the Si layer without adversely affecting parts other than the oxide film and capable of surely forming a SiGe layer with good film quality without roughening the crystal structure of a surface of the Si layer from which the oxide film has been removed, and to provide a recording medium.[Means for Solving the Problems] A processing method for removing an oxide film growing on a surface of a Si layer, and forming a SiGe layer on the surface of the exposed Si layer includes: supplying gas containing a halogen element and basic gas to the surface of the Si layer, and causing the oxide film growing on the surface of the Si layer to chemically react with the gas containing the halogen element and the basic gas to turn the oxide film into a reaction product; removing the reaction product by heating; and thereafter forming the SiGe layer on the surface of the exposed Si layer.
    • 本发明提供一种能够从Si层除去附着在Si层上的氧化膜的处理方法,而不会不利地影响氧化膜以外的部分,并且能够确保形成具有良好膜质量的SiGe层,而不会使晶体结构变粗糙 已经除去氧化膜的Si层的表面,并提供记录介质。 解决问题的手段用于去除在Si层表面生长的氧化膜并在暴露的Si层的表面上形成SiGe层的处理方法包括:将含有卤素元素和碱性气体的气体供给到 使Si层表面生长的氧化膜与含有卤素元素和碱性气体的气体发生化学反应,将氧化膜转化成反应产物; 通过加热除去反应产物; 然后在暴露的Si层的表面上形成SiGe层。
    • 7. 发明申请
    • Etching of silicon oxide film
    • 刻蚀氧化硅膜
    • US20080254636A1
    • 2008-10-16
    • US12078958
    • 2008-04-08
    • Shigeki TozawaYusuke Muraki
    • Shigeki TozawaYusuke Muraki
    • H01L21/306
    • H01L21/31138H01L21/67069H01L21/67155
    • An etching method includes preparing a target object such that a first oxide film made of silicon oxide containing at least one of B and P is formed on a substrate, a second oxide film made of silicon oxide containing neither of B and P is formed on the first oxide film, and a contact portion is present below an interface between the first oxide film and the second oxide film. The etching method further includes etching the second oxide film and the first oxide film, thereby forming a hole reaching the contact portion, and etching the first oxide film by a dry process using a gas containing HF, thereby expanding a portion of the hole adjacent to an upper side of the contact portion and inside the first oxide film.
    • 蚀刻方法包括制备目标物体,使得在基板上形成由含有B和P中的至少一个的氧化硅制成的第一氧化物膜,在不含有B和P的氧化硅中形成的第二氧化物膜形成在 第一氧化物膜和接触部分存在于第一氧化物膜和第二氧化物膜之间的界面之下。 蚀刻方法还包括蚀刻第二氧化物膜和第一氧化物膜,从而形成到达接触部分的孔,并且通过使用含有HF的气体的干法来蚀刻第一氧化物膜,从而使孔的一部分与 接触部分的上侧和第一氧化膜内部。