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    • 4. 发明申请
    • Method of manufacturing semiconductor device
    • 制造半导体器件的方法
    • US20060030119A1
    • 2006-02-09
    • US11184262
    • 2005-07-18
    • Satoshi OnaiToshihiro Okuda
    • Satoshi OnaiToshihiro Okuda
    • H01L21/76
    • H01L29/66272H01L21/763
    • There has heretofore been a problem that a junction leak current between a collector and a base is generated by a crystal defect caused in an end portion of a groove adjacent to a base region. In the present invention, an opening is formed in a silicon oxide film and a TEOS film so as to have a distance from an upper end portion of a groove. Thereafter, a base extraction electrode is formed by utilizing the opening. Subsequently, an external base region is formed by solid phase diffusion from the base extraction electrode. In this event, there is secured a distance between the external base region and the upper end portion of the groove. By use of the manufacturing method described above, it is possible to suppress generation of a junction leak current between a collector and a base.
    • 迄今为止,存在在与基底区域相邻的凹槽的端部处产生的晶体缺陷产生集电体和基底之间的结漏电流的问题。 在本发明中,在氧化硅膜和TEOS膜中形成有与槽的上端部隔开的距离的开口部。 此后,通过利用开口形成基极引出电极。 随后,通过从基极引出电极的固相扩散形成外部基极区域。 在这种情况下,固定了外部基部区域和槽的上端部分之间的距离。 通过使用上述制造方法,可以抑制集电体与基体之间的结漏电流的产生。
    • 6. 发明授权
    • Method for manufacturing semiconductor device
    • 制造半导体器件的方法
    • US07135380B2
    • 2006-11-14
    • US11165083
    • 2005-06-22
    • Satoshi OnaiHirotsugu Hata
    • Satoshi OnaiHirotsugu Hata
    • H01L21/76
    • H01L21/763H01L21/76224
    • In a conventional method for manufacturing a semiconductor device, there are problems that a concave part is formed in a formation region of an isolation region, no flat surface is formed in the isolation region, and a wiring layer is disconnected above the concave part. In a method for manufacturing a semiconductor device of the present invention, when a silicon oxide film used for a STI method is removed, an HTO film covering an inner wall of a trench is partially removed to form a concave part in an isolation region. Thereafter, a TEOS film is deposited on an epitaxial layer including the concave part and is etched back. Accordingly, an insulating spacer is buried in the concave part. Thus, an upper surface of the isolation region becomes a substantially flat surface. Consequently, even if a wiring layer is formed above the concave part in the isolation region, disconnection thereof can be prevented. Moreover, in the isolation region, the substantially flat surface makes it possible to form a passive element such as a capacity element.
    • 在传统的半导体器件制造方法中,存在在隔离区域的形成区域中形成凹部的问题,在隔离区域中不形成平坦面,并且在凹部上方布线层断开。 在本发明的半导体器件的制造方法中,当去除用于STI法的氧化硅膜时,部分除去覆盖沟槽内壁的HTO膜,从而在隔离区域形成凹部。 此后,将TEOS膜沉积在包括凹部的外延层上并被回蚀刻。 因此,绝缘间隔物被埋在凹部中。 因此,隔离区域的上表面变为基本平坦的表面。 因此,即使在隔离区域中的凹部上方形成布线层,也可以防止其断开。 此外,在隔离区域中,基本平坦的表面使得可以形成诸如电容元件的无源元件。
    • 7. 发明申请
    • Method of manufacturing semiconductor device
    • 制造半导体器件的方法
    • US20060030111A1
    • 2006-02-09
    • US11184213
    • 2005-07-18
    • Satoshi OnaiShinobu Teranaka
    • Satoshi OnaiShinobu Teranaka
    • H01L21/336
    • H01L29/66272H01L29/7322
    • There has heretofore been a problem that desired withstanding characteristics cannot be obtained since a buried diffusion layer climbs up more than necessary in other heat treatment steps. In the present invention, after an N-type buried diffusion layer is formed, dry etching is performed in order to round off corner portions of a groove used for inter-element isolation and the like. Moreover, the groove is filled up with an NSG film formed by use of a CVD method, for example. Furthermore, a trench forming an isolation region is filled up with a HTO film and a polycrystalline silicon film, which are formed by use of the CVD method, for example. By use of the manufacturing method described above, it is possible to realize a semiconductor device capable of obtaining desired withstanding characteristics by preventing the N-type buried diffusion layer from climbing up more than necessary.
    • 迄今为止,由于掩埋扩散层在其它热处理步骤中爬升超过必要,所以存在无法获得期望的耐受特性的问题。 在本发明中,在形成N型掩埋扩散层之后,进行干蚀刻以使用于元件间隔离等的凹槽的角部圆整。 此外,例如,通过使用CVD法形成的NSG膜填充凹槽。 此外,形成隔离区的沟槽填充有例如通过使用CVD法形成的HTO膜和多晶硅膜。 通过使用上述制造方法,可以实现能够通过防止N型埋入扩散层上升超过所需的能够获得期望的耐受特性的半导体器件。
    • 10. 发明申请
    • Method for manufacturing semiconductor device
    • 制造半导体器件的方法
    • US20050287765A1
    • 2005-12-29
    • US11165083
    • 2005-06-22
    • Satoshi OnaiHirotsugu Hata
    • Satoshi OnaiHirotsugu Hata
    • H01L21/76H01L21/762H01L21/763
    • H01L21/763H01L21/76224
    • In a conventional method for manufacturing a semiconductor device, there are problems that a concave part is formed in a formation region of an isolation region, no flat surface is formed in the isolation region, and a wiring layer is disconnected above the concave part. In a method for manufacturing a semiconductor device of the present invention, when a silicon oxide film used for a STI method is removed, an HTO film covering an inner wall of a trench is partially removed to form a concave part in an isolation region. Thereafter, a TEOS film is deposited on an epitaxial layer including the concave part and is etched back. Accordingly, an insulating spacer is buried in the concave part. Thus, an upper surface of the isolation region becomes a substantially flat surface. Consequently, even if a wiring layer is formed above the concave part in the isolation region, disconnection thereof can be prevented. Moreover, in the isolation region, the substantially flat surface makes it possible to form a passive element such as a capacity element.
    • 在传统的半导体器件制造方法中,存在在隔离区域的形成区域中形成凹部的问题,在隔离区域中不形成平坦面,并且在凹部上方布线层断开。 在本发明的半导体器件的制造方法中,当除去用于STI法的氧化硅膜时,部分除去覆盖沟槽内壁的HTO膜,从而在隔离区域形成凹部。 此后,将TEOS膜沉积在包括凹部的外延层上并被回蚀刻。 因此,绝缘间隔物被埋在凹部中。 因此,隔离区域的上表面变为基本平坦的表面。 因此,即使在隔离区域中的凹部上方形成布线层,也可以防止其断开。 此外,在隔离区域中,基本平坦的表面使得可以形成诸如电容元件的无源元件。