Lateral double diffused MOS transistors
    1.
    发明授权
    Lateral double diffused MOS transistors 失效
    横向双扩散MOS晶体管

    公开(公告)号:US07573097B2

    公开(公告)日:2009-08-11

    申请号:US10981175

    申请日:2004-11-03

    IPC分类号: H01L29/417 H01L29/423

    摘要: The specification describes an improved mechanical electrode structure for MOS transistor devices with elongated runners. It recognizes that shrinking the geometry increases the likelihood of mechanical failure of comb electrode geometries. The mechanical integrity of a comb electrode is improved by interconnecting the electrode fingers in a cross-connected grid. In one embodiment, the transistor device is interconnected with gate fingers on a lower metaliization level, typically the first level metal, with the drain interconnected at a higher metal level. That allows the drain fingers to be cross-connected with a vertical separation between drain and gate comb electrodes. The cross-connect members may be further stabilized by adding beam extensions to the cross-connect members. The beam extensions may be anchored in an interlevel dielectric layer for additional support.

    摘要翻译: 本说明书描述了具有细长流道的用于MOS晶体管器件的改进的机械电极结构。 它认识到缩小几何形状增加了梳状电极几何形状的机械故障的可能性。 梳状电极的机械完整性通过将电极指互连在一个交叉连接的网格中来改进。 在一个实施例中,晶体管器件与较低的金属化级别(通常为第一级金属)与栅极指状物互连,漏极互连在较高的金属水平。 这允许漏极指与电极和门梳电极之间的垂直间隔交叉连接。 交叉连接构件可以通过向交叉连接构件添加梁延伸而进一步稳定。 光束延伸部可以锚定在层间电介质层中用于额外的支撑。