Optimization of a laser anneal beam path for maximizing chip yield
    11.
    发明授权
    Optimization of a laser anneal beam path for maximizing chip yield 有权
    用于最大化芯片产量的激光退火光束路径的优化

    公开(公告)号:US09335759B2

    公开(公告)日:2016-05-10

    申请号:US14177260

    申请日:2014-02-11

    Abstract: Semiconductor chips with curable out of specification measured values of an anneal-activated parameter are identified at a test step. A plurality of anneal plans are generated to include at least one of the identified semiconductor chips. A net yield improvement is calculated for each anneal plan. Each anneal plan includes the paths of a laser beam across the wafer to be irradiated, and optionally includes an azimuthal angle of the wafer as a function of time. The net yield improvement is the difference between an estimated yield improvement from selected target semiconductor chips for irradiation and an estimated yield loss due to collateral irradiation of functional semiconductor chips for each anneal plan. After simulating the net yield improvements for all the anneal plans, the anneal plan providing the greatest net yield improvement can be selected and utilized.

    Abstract translation: 在测试步骤中识别具有退火激活参数的规格测量值的可固化的半导体芯片。 生成多个退火计划以包括所识别的半导体芯片中的至少一个。 对每个退火计划计算净产量改进。 每个退火计划包括穿过要照射的晶片的激光束的路径,并且可选地包括作为时间的函数的晶片的方位角。 净收益率的改善是所选择的用于照射的目标半导体芯片的估计产量提高与由于每个退火计划的功能性半导体芯片的侧向照射而导致的估计的产量损失之间的差异。 在模拟所有退火计划的净产量改进之后,可以选择和利用提供最大净产量改进的退火计划。

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