INHIBITION OF METAL DIFFUSION ARISING FROM LASER DICING
    4.
    发明申请
    INHIBITION OF METAL DIFFUSION ARISING FROM LASER DICING 失效
    金属扩散抑制由激光引起

    公开(公告)号:US20090155983A1

    公开(公告)日:2009-06-18

    申请号:US11955484

    申请日:2007-12-13

    IPC分类号: H01L21/304

    CPC分类号: H01L21/02076

    摘要: Method of inhibiting metal diffusion arising from laser dicing is provided. The method includes dividing a wafer into at least one chip. The chip includes internal metallic features. The dividing deposits at least one metallic substance on the outer surface of the chip. After so dividing the chip, the method exposes the chip to a heated ambient environment having a given pressure (e.g., less than one atmosphere). The environment includes a chemical agent capable of bonding with the metallic substance. Additionally, wet chemical etch may be performed on the chip.

    摘要翻译: 提供了抑制激光切割引起的金属扩散的方法。 该方法包括将晶片分成至少一个芯片。 该芯片包括内部金属特征。 分散在芯片的外表面上沉积至少一种金属物质。 在分割芯片之后,该方法将芯片暴露于具有给定压力(例如,小于一个大气压)的加热的环境环境中。 环境包括能够与金属物质结合的化学试剂。 另外,可以在芯片上进行湿式化学蚀刻。