Semiconductor device
    1.
    发明授权
    Semiconductor device 有权
    半导体器件

    公开(公告)号:US08698250B2

    公开(公告)日:2014-04-15

    申请号:US13525478

    申请日:2012-06-18

    IPC分类号: H01L21/70

    摘要: A semiconductor device includes: an N-type drift layer; a P-type anode layer above the N-type drift layer; an N-type cathode layer below the N-type drift layer; a first short lifetime layer between the N-type drift layer and the P-type anode layer; and a second short lifetime layer between the N-type drift layer and the N-type cathode layer. A carrier lifetime in the first and second short lifetime layers is shorter than a carrier lifetime in the N-type drift layer. A carrier lifetime in the N-type cathode layer is longer than the carrier lifetime in the N-type drift layer.

    摘要翻译: 一种半导体器件包括:N型漂移层; N型漂移层上方的P型阳极层; N型漂移层下面的N型阴极层; 在N型漂移层和P型阳极层之间的第一短寿命层; 以及N型漂移层和N型阴极层之间的第二短寿命层。 第一和第二短寿命层中的载流子寿命短于N型漂移层中的载流子寿命。 N型阴极层中的载流子寿命长于N型漂移层中的载流子寿命。

    METHOD FOR MANUFACTURING SEMICONDUCTOR DEVICE
    3.
    发明申请
    METHOD FOR MANUFACTURING SEMICONDUCTOR DEVICE 有权
    制造半导体器件的方法

    公开(公告)号:US20150255290A1

    公开(公告)日:2015-09-10

    申请号:US14433191

    申请日:2012-12-07

    摘要: An insulating film (2) is formed on a main surface of a semiconductor substrate (1) that includes an active region and a termination region. The insulating film (2) in the active region is etched to form an opening (3). The insulating film (2) is used as a mask and an impurity is implanted into the semiconductor substrate (1) in a direction tilted by 20° or more from a direction normal to the main surface of the semiconductor substrate (1) while rotating the semiconductor substrate (1) to form a diffusion layer (7) in the active region. The diffusion layer (7) extends wider than the opening (3) up to below the insulating film (2) on the termination region side.

    摘要翻译: 绝缘膜(2)形成在包括有源区和端接区的半导体衬底(1)的主表面上。 有源区域中的绝缘膜(2)被蚀刻以形成开口(3)。 绝缘膜(2)用作掩模,并且在从半导体衬底(1)的主表面垂直的方向上倾斜20°或更大的方向将杂质注入到半导体衬底(1)中,同时旋转 半导体衬底(1)以在有源区中形成扩散层(7)。 扩散层(7)在开口(3)上延伸到终端区域侧的绝缘膜(2)的下方。