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    • 1. 发明授权
    • Method for manufacturing semiconductor device
    • 制造半导体器件的方法
    • US08900962B2
    • 2014-12-02
    • US13052309
    • 2011-03-21
    • Daisuke YamashitaEtsuo HamadaHideki NozakiHironobu Shibata
    • Daisuke YamashitaEtsuo HamadaHideki NozakiHironobu Shibata
    • H01L21/331H01L29/66H01L21/268H01L29/739H01L29/08H01L21/266H01L21/265
    • H01L29/66333H01L21/26513H01L21/266H01L21/268H01L29/0834H01L29/7395
    • According to one embodiment, a method is disclosed for manufacturing a semiconductor device. The method can include forming a base region and an emitter region in a front surface of a semiconductor layer. The method can include forming a first impurity implantation region by implanting first impurity of a first conductivity type into a back surface of the semiconductor layer. The method can include selectively forming a second impurity implantation region by selectively implanting second impurity of a second conductivity type into the first impurity implantation region. In addition, the method can include irradiating the first impurity implantation region and the second impurity implantation region with laser light. A peak of impurity concentration profile in a depth direction of at least one of the first impurity implantation region and the second impurity implantation region before irradiation with the laser light is adjusted to a depth of 0.05 μm or more and 0.3 μm or less from the back surface of the semiconductor layer.
    • 根据一个实施例,公开了一种用于制造半导体器件的方法。 该方法可以包括在半导体层的前表面中形成基极区域和发射极区域。 该方法可以包括通过将第一导电类型的第一杂质注入半导体层的后表面来形成第一杂质注入区。 该方法可以包括通过将第二导电类型的第二杂质选择性地注入到第一杂质注入区域中来选择性地形成第二杂质注入区域。 此外,该方法可以包括用激光照射第一杂质注入区域和第二杂质注入区域。 将激光照射前的第一杂质注入区域和第二杂质注入区域中的至少一个的深度方向的杂质浓度分布的峰值从背面调整为0.05μm以上且0.3μm以下的深度 半导体层的表面。
    • 2. 发明申请
    • METHOD FOR MANUFACTURING SEMICONDUCTOR DEVICE
    • 制造半导体器件的方法
    • US20110250728A1
    • 2011-10-13
    • US13052309
    • 2011-03-21
    • Daisuke YamashitaEtsuo HamadaHideki NozakiHironobu Shibata
    • Daisuke YamashitaEtsuo HamadaHideki NozakiHironobu Shibata
    • H01L21/331
    • H01L29/66333H01L21/26513H01L21/266H01L21/268H01L29/0834H01L29/7395
    • According to one embodiment, a method is disclosed for manufacturing a semiconductor device. The method can include forming a base region and an emitter region in a front surface of a semiconductor layer. The method can include forming a first impurity implantation region by implanting first impurity of a first conductivity type into a back surface of the semiconductor layer. The method can include selectively forming a second impurity implantation region by selectively implanting second impurity of a second conductivity type into the first impurity implantation region. In addition, the method can include irradiating the first impurity implantation region and the second impurity implantation region with laser light. A peak of impurity concentration profile in a depth direction of at least one of the first impurity implantation region and the second impurity implantation region before irradiation with the laser light is adjusted to a depth of 0.05 μm or more and 0.3 μm or less from the back surface of the semiconductor layer.
    • 根据一个实施例,公开了一种用于制造半导体器件的方法。 该方法可以包括在半导体层的前表面中形成基极区域和发射极区域。 该方法可以包括通过将第一导电类型的第一杂质注入半导体层的后表面来形成第一杂质注入区。 该方法可以包括通过将第二导电类型的第二杂质选择性地注入到第一杂质注入区域中来选择性地形成第二杂质注入区域。 此外,该方法可以包括用激光照射第一杂质注入区域和第二杂质注入区域。 将激光照射前的第一杂质注入区域和第二杂质注入区域中的至少一个的深度方向的杂质浓度分布的峰值从背面调整为0.05μm以上且0.3μm以下的深度 半导体层的表面。
    • 4. 发明申请
    • METHOD OF MANUFACTURING SEMICONDUCTOR CHIPS
    • 制造半导体器件的方法
    • US20100048000A1
    • 2010-02-25
    • US12545573
    • 2009-08-21
    • Motoshige KobayashiHideki Nozaki
    • Motoshige KobayashiHideki Nozaki
    • H01L21/304
    • H01L21/6835H01L21/6836H01L29/0657H01L2221/68327H01L2221/68336H01L2221/6834
    • A semiconductor wafer is prepared. The wafer has a first and a second surface opposite to each other, and has a recess portion and a rim portion. The semiconductor wafer has semiconductor elements formed on the first surface. The rim portion surrounds the recess portion. The recess portion and the rim portion are composed of the first and second surfaces. The recess portion is formed so as to recede toward the first surface. A tape is adhered to the second surface of the semiconductor wafer. At least the recess portion of the semiconductor wafer is placed on a stage. The tape is sandwiched between the recess portion and the stage. Laser beam is irradiated to the recess portion from the side of the first surface and along predetermined dicing lines. The recess portion is cut off to divide the semiconductor wafer into chips.
    • 准备半导体晶片。 晶片具有彼此相对的第一和第二表面,并且具有凹部和边缘部。 半导体晶片具有形成在第一表面上的半导体元件。 边缘部分围绕凹部。 凹部和边缘部由第一表面和第二表面构成。 凹部形成为朝向第一面后退。 胶带粘附到半导体晶片的第二表面。 至少将半导体晶片的凹部放置在台上。 带被夹在凹部和台之间。 激光束从第一表面的一侧沿着预定的切割线照射到凹部。 将凹部切断,将半导体晶片分割成芯片。
    • 10. 发明授权
    • High breakdown voltage semiconductor device
    • 高击穿电压半导体器件
    • US06649981B2
    • 2003-11-18
    • US10107405
    • 2002-03-28
    • Motoshige KobayashiHideki Nozaki
    • Motoshige KobayashiHideki Nozaki
    • H01L2362
    • H01L29/66333H01L29/36H01L29/7395
    • A semiconductor device comprises a first base layer for providing a PT-IGBT or IEGT structure, which includes a buffer layer and a collector layer provided in the buffer layer. A first activation rate, defined by an activated first conductivity type impurity density [cm−2] in the buffer layer due to SR analysis/a first conductivity type impurity density [cm−2] in the buffer layer due to SIMS analysis is given by 25% or more, and a second activation rate, defined by an activated second conductivity type impurity density [cm−2] in the collector layer due to SR analysis/a second conductivity type impurity density [cm−2] in the collector layer duet to SIMS analysis is given by more than 0% and 10% or less.
    • 半导体器件包括用于提供PT-IGBT或IEGT结构的第一基极层,其包括设置在缓冲层中的缓冲层和集电极层。 由缓冲层中的SR分析/第一导电型杂质浓度[cm -2]在缓冲层中由于SIMS而由活化的第一导电类型杂质密度[cm -2]限定的第一活化速率 分析为25%以上,由于SR分析/第二导电型杂质密度[cm -1],在集电体层中由活化的第二导电型杂质浓度[cm -2]限定的第二活化率, 2>]在集电极二极管到SIMS分析中给出了超过0%和10%以下。