Semiconductor device for electrostatic discharge protection and method of forming the same

    公开(公告)号:US09691752B1

    公开(公告)日:2017-06-27

    申请号:US15096234

    申请日:2016-04-11

    CPC classification number: H01L29/0653 H01L27/0277 H01L29/0619 H01L29/7816

    Abstract: An ESD protection device and a method of forming the same, the ESD device includes a substrate, a first doped well, a second doped well, a source and drain regions and a guard ring. The first doped well with a first conductive type is disposed in the substrate. The source and drain regions with the second conductive type are disposed in the first doped well. The guard ring with the first conductive type is also disposed in the first doped well and has a first portion extending along a first direction and a second portion extending along a second direction different from the first direction. The second doped well with the second conductive type is also disposed in the first doped well between the drain region and the second portion of the guard ring to in contact with the drain region in the first direction.

    ELECTROSTATIC DISCHARGE PROTECTION STRUCTURE CAPABLE OF PREVENTING LATCH-UP ISSUE CAUSED BY UNEXPECTED NOISE
    117.
    发明申请
    ELECTROSTATIC DISCHARGE PROTECTION STRUCTURE CAPABLE OF PREVENTING LATCH-UP ISSUE CAUSED BY UNEXPECTED NOISE 有权
    静电放电保护结构可防止由意外噪声引起的闭锁问题

    公开(公告)号:US20160118374A1

    公开(公告)日:2016-04-28

    申请号:US14986741

    申请日:2016-01-04

    Abstract: An electrostatic discharge protection structure comprises an isolation layer, a high voltage P-well, an N-well, a P-well, a first doped region of N-type conductivity, a second doped region of P-type conductivity, a third doped region of N-type conductivity, a fourth doped region of P-type conductivity, an anode, and a cathode. The isolation layer is disposed on a substrate. The high voltage P-well is disposed on the isolation layer. The N-well is disposed in the high voltage P-well. The P-well is disposed in the high voltage P-well, and the P-well is separated from the N-well. The first and the second doped regions are disposed in the N-well. The third and the fourth doped regions are disposed in the P-well. The anode is electrically connected to the first doped region and the second doped region, and the cathode is electrically connected to the fourth doped region.

    Abstract translation: 静电放电保护结构包括隔离层,高电压P阱,N阱,P阱,N型导电的第一掺杂区,P型导电的第二掺杂区,第三掺杂区 N型导电性区域,P型导电性的第四掺杂区域,阳极和阴极。 隔离层设置在基板上。 高压P阱设置在隔离层上。 N阱设置在高压P阱中。 P阱设置在高电压P阱中,P阱与N阱分离。 第一和第二掺杂区域设置在N阱中。 第三和第四掺杂区域设置在P阱中。 阳极电连接到第一掺杂区域和第二掺杂区域,阴极电连接到第四掺杂区域。

    SEMICONDUCTOR DEVICE
    118.
    发明申请
    SEMICONDUCTOR DEVICE 有权
    半导体器件

    公开(公告)号:US20150137255A1

    公开(公告)日:2015-05-21

    申请号:US14082529

    申请日:2013-11-18

    CPC classification number: H01L27/092 H01L27/0277 H01L27/088

    Abstract: A semiconductor device is described, including a substrate including a first area and a second area, a first MOS element of a first conductivity type in the first area, and a second MOS element of the first conductivity type in the second area. The first area is closer to a pick-up region of the substrate than the second area. The substrate has a second conductivity type. The bottom depth of a first electrical conduction path in the substrate in the first area is smaller than that of a second electrical conduction path in the substrate in the second area.

    Abstract translation: 描述了一种半导体器件,包括包括第一区域和第二区域的衬底,第一区域中的第一导电类型的第一MOS元件和第二区域中的第一导电类型的第二MOS元件。 第一区域比第二区域更靠近基板的拾取区域。 衬底具有第二导电类型。 第一区域中的衬底中的第一导电通路的底部深度小于第二区域中的衬底中的第二导电通路的深度。

    SEMICONDUCTOR DEVICE FOR ELECTROSTATIC DISCHARGE PROTECTION
    119.
    发明申请
    SEMICONDUCTOR DEVICE FOR ELECTROSTATIC DISCHARGE PROTECTION 有权
    用于静电放电保护的半导体器件

    公开(公告)号:US20140284720A1

    公开(公告)日:2014-09-25

    申请号:US13848069

    申请日:2013-03-21

    Abstract: A semiconductor device includes a substrate, a gate positioned on the substrate, a drain region and a source region formed at respective two sides of the gate in the substrate, at least a first doped region formed in the drain region, and at least a first well having the first doped region formed therein. The source region and the drain region include a first conductivity type, the first doped region and the first well include a second conductivity type, and the first conductivity type and the second conductivity type are complementary to each other.

    Abstract translation: 半导体器件包括衬底,位于衬底上的栅极,形成在衬底中的栅极的相应两侧处的漏极区域和源极区域,形成在漏极区域中的至少第一掺杂区域,以及至少第一 其中形成有第一掺杂区。 源区和漏区包括第一导电类型,第一掺杂区和第一阱包括第二导电类型,并且第一导电类型和第二导电类型彼此互补。

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