Method of separating layers of material

Semiconductor device manufacturing: process – Bonding of plural semiconductor substrates – Subsequent separation into plural bodies

Reexamination Certificate

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C219S121800, C219S121850, C438S463000

Reexamination Certificate

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11215248

ABSTRACT:
A lift off process is used to separate a layer of material from a substrate by irradiating an interface between the layer of material and the substrate. According to one exemplary process, the layer is separated into a plurality of sections corresponding to dies on the substrate and a homogeneous beam spot is shaped to cover an integer number of the sections.

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