Epi block structure in semiconductor product providing high breakdown voltage

    公开(公告)号:US11621351B2

    公开(公告)日:2023-04-04

    申请号:US17306536

    申请日:2021-05-03

    Abstract: The present disclosure is generally directed to semiconductor structures and methods that improve breakdown characteristics in finFET device designs, while retaining cost effectiveness for integration into the process flow. The semiconductor structure includes an extended lightly-doped-drain (LDD) region formed on a source/drain structure. The extended LDD regions provide extra separation between source and drain regions, which in turn provides for an increased source to drain resistance. The increased source to drain resistance improves the breakdown voltage of the semiconductor device, and significantly reduces its susceptibility to latch-up. The source to drain resistance may be tuned by adjusting the length of epi block regions, and may also be tuned by selecting desired doping profiles for the LDD and source/drain regions. The length of epi block regions may also be adjusted to maintain high uniformity of epitaxial growth in the S/D regions.

    Device layout for reference and sensor circuits
    7.
    发明授权
    Device layout for reference and sensor circuits 有权
    参考和传感器电路的器件布局

    公开(公告)号:US09166067B2

    公开(公告)日:2015-10-20

    申请号:US14089808

    申请日:2013-11-26

    Abstract: A band gap reference circuit includes an error-amplifier-based current mirror coupled between a first supply node and a pair of intermediate voltage nodes, and a matched diode pair for providing a proportional-to-absolute temperature (PTAT) current. The matched diode pair includes a first diode connected between a first intermediate voltage node from the pair of intermediate voltage nodes and a second supply node, and a second diode connected in series with a resistor between a second intermediate voltage node from the pair of intermediate voltage nodes and the second supply node. Each diode has a P-N diode junction that is a homojunction.

    Abstract translation: 带隙参考电路包括耦合在第一电源节点和一对中间电压节点之间的基于误差放大器的电流镜,以及用于提供比例绝对温度(PTAT)电流的匹配二极管对。 匹配二极管对包括连接在来自一对中间电压节点的第一中间电压节点和第二电源节点之间的第一二极管,以及与来自所述一对中间电压的第二中间电压节点之间的电阻器串联连接的第二二极管 节点和第二个供应节点。 每个二极管具有一个同相结合的P-N二极管结。

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