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    • 1. 发明授权
    • Production method for silicon wafer and silicon wafer
    • 硅晶片和硅晶片的生产方法
    • US06544656B1
    • 2003-04-08
    • US09674841
    • 2000-11-07
    • Takao AbeKen AiharaShoji AkiyamaTetsuya IgarashiWeifeng QuYoshinori HayamizuShigeru Saito
    • Takao AbeKen AiharaShoji AkiyamaTetsuya IgarashiWeifeng QuYoshinori HayamizuShigeru Saito
    • C30B2906
    • C30B29/06C30B15/00H01L21/3225Y10T428/21
    • A silicon wafer is produced by growing a silicon single crystal ingot having a resistivity of 100 &OHgr;·cm or more and an initial interstitial oxygen concentration of 10 to 25 ppma by the Czochralski method, processing the silicon single crystal ingot into a wafer, and subjecting the wafer to an oxygen precipitation heat treatment so that a residual interstitial oxygen concentration in the wafer should become 8 ppma or less. A silicon wafer produced as described above shows little decrease in resistivity even after a heat treatment in device production etc. Further, if a silicon wafer is produced and heat-treated so that the wafer should have the above-defined initial interstitial oxygen concentration and residual interstitial oxygen concentration, slip dislocations in a subsequent heat treatment process are prevented irrespective of resistivity. Furthermore, by forming an epitaxial layer on a surface of a silicon wafer of the present invention, a high resistivity epitaxial wafer can be produced, which is free from slip dislocations etc. and can be used for various devices.
    • 通过使用Czochralski法生长电阻率为100欧姆·厘米或更高的初始间隙氧浓度为10〜25ppma的硅单晶锭,将硅单晶锭加工成晶片,生产硅晶片, 晶片进行氧析出热处理,使得晶片中的残留间隙氧浓度应变为8ppma以下。 如上所述制造的硅晶片即使在器件制造等中进行热处理之后也几乎没有电阻降低。此外,如果制造硅晶片并进行热处理,使得晶片应具有上述初始间隙氧浓度和残留量 间隙氧浓度,随后的热处理过程中的滑移位错被阻止,而与电阻率无关。 此外,通过在本发明的硅晶片的表面上形成外延层,可以制造不含滑移位错等的高电阻率外延晶片,并可用于各种器件。
    • 5. 发明申请
    • METHOD FOR MANUFACTURING COMPOSITE WAFERS
    • 制造复合波导的方法
    • US20140308800A1
    • 2014-10-16
    • US14343515
    • 2012-09-14
    • Shoji AkiyamaKazutoshi Nagata
    • Shoji AkiyamaKazutoshi Nagata
    • H01L21/762
    • H01L21/76254H01L21/02002H01L21/2007H01L21/2011H01L21/76243H01L21/76251
    • This invention provides a method for manufacturing composite wafers in which at least two composite wafers can be obtained from one donor wafer, and in which the chamfering step can be omitted. Provided is a method for manufacturing composite wafers comprising: bonding surfaces of at least two handle wafers and a surface of a donor wafer which has a diameter greater than or equal to a sum of diameters of the at least two handle wafers and which has a hydrogen ion implantation layer formed inside thereof by implanting hydrogen ions from the surface of the donor wafer, to obtain a bonded wafer; heating the bonded wafer at 200° C. to 400° C.; and detaching a film from the donor wafer along the hydrogen ion implantation layer of the heated bonded wafer, to obtain the composite wafers having the film transferred onto the at least two handle wafers.
    • 本发明提供一种制造复合晶片的方法,其中可以从一个施主晶片获得至少两个复合晶片,并且其中可以省略倒角步骤。 提供了一种用于制造复合晶片的方法,包括:将至少两个手柄晶片的接合表面和施主晶片的表面直接大于或等于至少两个手柄晶片的直径之和,并且具有氢 通过从施主晶片的表面注入氢离子形成在其内部的离子注入层,以获得接合晶片; 将粘合晶片在200℃加热至400℃; 以及沿加热的接合晶片的氢离子注入层从施主晶片分离膜,以获得具有转移到至少两个处理晶片上的膜的复合晶片。
    • 8. 发明授权
    • Method for manufacturing SOI wafer
    • 制造SOI晶圆的方法
    • US08268700B2
    • 2012-09-18
    • US12153160
    • 2008-05-14
    • Shoji AkiyamaYoshihiro KubotaAtsuo ItoKoichi TanakaMakoto KawaiYuuji Tobisaka
    • Shoji AkiyamaYoshihiro KubotaAtsuo ItoKoichi TanakaMakoto KawaiYuuji Tobisaka
    • H01L21/30
    • H01L21/76254
    • There is disclosed a method for manufacturing an SOI wafer comprising at least: implanting a hydrogen ion, a rare gas ion, or both the ions into a donor wafer formed of a silicon wafer or a silicon wafer having an oxide film formed on a surface thereof from a surface of the donor wafer, thereby forming an ion implanted layer; performing a plasma activation treatment with respect to at least one of an ion implanted surface of the donor wafer and a surface of a handle wafer, the surface of the handle wafer is to be bonded to the ion implanted surface; closely bonding these surfaces to each other; mechanically delaminating the donor wafer at the ion implanted layer as a boundary and thereby reducing a film thickness thereof to provide an SOI layer, and performing a heat treatment at 600 to 1000° C.; and polishing a surface of the SOI layer for 10 to 50 nm based on chemical mechanical polishing.A method for manufacturing with excellent productivity an SOI wafer having an SOI layer with a mirror-finished surface and high film thickness uniformity can be provided.
    • 公开了一种制造SOI晶片的方法,该方法至少包括:将氢离子,稀有气体离子或两者离子注入到由硅晶片或具有在其表面上形成的氧化膜的硅晶片形成的施主晶片中 从施主晶片的表面,从而形成离子注入层; 对施主晶片的离子注入表面和处理晶片的表面中的至少一个进行等离子体激活处理,把手晶片的表面与离子注入表面结合; 将这些表面彼此紧密结合; 以离子注入层的施主晶片作为边界进行机械分层,由此降低其膜厚以提供SOI层,并在600〜1000℃下进行热处理。 并且基于化学机械抛光将SOI层的表面抛光10至50nm。 可以提供具有优异的生产率的具有SOI层的具有镜面精加工表面和高膜厚均匀性的SOI晶片的方法。