Invention Grant
US08525578B2 Semiconductor device having plural optical fuses and manufacturing method thereof 失效
具有多个光熔断器的半导体器件及其制造方法

Semiconductor device having plural optical fuses and manufacturing method thereof
Abstract:
Such a device is disclosed that includes a first ladder fuse for which blowing points are arranged at a first coordinate and a second ladder fuse for which blowing points are arranged at a second coordinate. When adjustment data for adjusting circuit characteristics is within a first range, a trimming operation is performed on both the first and second ladder fuses, and when the adjustment data for adjusting the circuit characteristics is within a second range, the trimming operation is performed on the second ladder fuse without performing the trimming operation on the first ladder fuse. This configuration eliminates a necessity of irradiation on the first ladder fuse with a laser when the adjustment data is within the second range.
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