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    • 7. 发明申请
    • Semiconductor device
    • 半导体器件
    • US20040094811A1
    • 2004-05-20
    • US10657799
    • 2003-09-09
    • Matsushita Electric Industrial Co., LTD
    • Takeshi Takagi
    • H01L029/76
    • H01L27/1203H01L21/823807H01L21/84H01L29/7782H01L29/802
    • A semiconductor device according to the invention includes: a semiconductor layer (10-15); a gate insulator (16) provided on the semiconductor layer; a gate electrode (17) provided on the gate insulator; a source region (20a) and a drain region (20b), which are of a first conductivity type and are provided in the semiconductor layer on both sides of the gate electrode in plan view; a cap layer (25), a channel region (24), and an under-channel region (23,22), which are of a second conductivity type and are provided in the semiconductor layer between the source region and the drain region in a descending order from an interface with the gate insulator; and a bias electrode member (Vbs) for applying a voltage to the under-channel region, wherein the channel region is formed of a first semiconductor, the cap layer and the under-channel region are formed of a second semiconductor and a third semiconductor, respectively, each of which has a larger band gap than the first semiconductor, the bias electrode member is capable of applying the voltage independently of the gate electrode.
    • 根据本发明的半导体器件包括:半导体层(10-15); 设置在所述半导体层上的栅极绝缘体(16) 设置在栅极绝缘体上的栅电极(17) 源极区域(20a)和漏极区域(20b),它们是第一导电类型,并且在平面图中设置在栅电极两侧的半导体层中; 具有第二导电类型的盖层(25),沟道区(24)和下沟道区(23,22),并且设置在源区和漏区之间的半导体层中 从与栅极绝缘体的界面降序; 以及用于向下通道区域施加电压的偏置电极部件(Vbs),其中所述沟道区域由第一半导体形成,所述覆盖层和所述下部沟道区域由第二半导体和第三半导体形成, 分别具有比第一半导体更大的带隙,偏置电极构件能够独立于栅电极施加电压。
    • 8. 发明申请
    • Bipolar transistor and fabrication method thereof
    • 双极晶体管及其制造方法
    • US20040251473A1
    • 2004-12-16
    • US10882220
    • 2004-07-02
    • MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    • Akira AsaiTeruhito OhnishiTakeshi Takagi
    • H01L031/0328
    • H01L29/66242H01L29/1004H01L29/36H01L29/7378Y10S438/936
    • A SiGe spacer layer 151, a graded SiGe base layer 152 including boron, and an Si-cap layer 153 are sequentially grown through epitaxial growth over a collector layer 102 on an Si substrate. A second deposited oxide film 112 having a base opening portion 118 and a Pnull polysilicon layer 115 that will be made into an emitter connecting electrode filling the base opening portion are formed on the Si-cap layer 153, and an emitter diffusion layer 153a is formed by diffusing phosphorus into the Si-cap layer 153. When the Si-cap layer 153 is grown, by allowing the Si-cap layer 153 to include boron only at the upper part thereof by in-situ doping, the width of a depletion layer 154 is narrowed and a recombination current is reduced, thereby making it possible to improve the linearity of the current characteristics.
    • 通过在Si衬底上的集电极层102上的外延生长,顺序地生长SiGe间隔层151,包括硼的梯度SiGe基极层152和Si覆盖层153。 在Si覆盖层153上形成第二沉积氧化物膜112,该第二沉积氧化物膜112具有基底开口部分118和将形成填充基部开口部分的发射极连接电极的P +多晶硅层115,形成发射极扩散层153a 通过将磷扩散到Si覆盖层153中。当Si覆盖层153生长时,通过原位掺杂使Si覆盖层153仅在其上部包含硼,则耗尽层的宽度 154变窄,并且复合电流降低,从而可以提高电流特性的线性。