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US09048309B2 Uniform masking for wafer dicing using laser and plasma etch 有权
使用激光和等离子体蚀刻的晶圆切割均匀掩模

Uniform masking for wafer dicing using laser and plasma etch
Abstract:
Uniform masking for wafer dicing using laser and plasma etch is described. In an example, a method of dicing a semiconductor wafer having a plurality of integrated circuits having bumps or pillars includes uniformly spinning on a mask above the semiconductor wafer, the mask composed of a layer covering and protecting the integrated circuits. The mask is then patterned with a laser scribing process to provide a patterned mask with gaps, exposing regions of the semiconductor wafer between the integrated circuits. The semiconductor wafer is then etched through the gaps in the patterned mask to singulate the integrated circuits.
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