Device comprising thermally stable, low dielectric constant material
    1.
    发明授权
    Device comprising thermally stable, low dielectric constant material 有权
    装置包括热稳定的低介电常数材料

    公开(公告)号:US06469390B2

    公开(公告)日:2002-10-22

    申请号:US09296001

    申请日:1999-04-21

    IPC分类号: H01L2348

    摘要: It has been discovered that for semiconductor devices such as MOSFETs, there is significant capacitive coupling in the front-end structure, i.e., the structure from and including the device substrate up to the first metal interconnect level. The invention therefore provides a device comprising a silicon substrate, an isolation structure in the substrate (e.g., shallow trench isolation), an active device structure (e.g., a transistor structure), a dielectric layer over the active device structure, and a metal interconnect layer over the dielectric layer (metal-1 level). At least one of the dielectric components of the front-end structure comprise a material exhibiting a dielectric constant less than 3.5. This relatively low dielectric constant material reduces capacitive coupling in the front-end structure, thereby providing improved properties in the device.

    摘要翻译: 已经发现,对于诸如MOSFET的半导体器件,在前端结构中存在显着的电容耦合,即从器件衬底到第一金属互连级别的结构。 因此,本发明提供了一种包括硅衬底,衬底中的隔离结构(例如,浅沟槽隔离),有源器件结构(例如,晶体管结构),有源器件结构上的介电层以及金属互连 层(介电层)(金属-1层)。 前端结构的介电部件中的至少一个包括介电常数小于3.5的材料。 这种相对低的介电常数材料减少了前端结构中的电容耦合,从而在器件中提供了改进的特性。