| 摘要 |
An electrostatic discharge (ESD) protection structure with a ground ring and a plurality of pads are provided, wherein the ground ring has a ring inner area used for disposing an integrated circuit (IC) and the pads are disposed around the outer periphery of the ground ring. The ground ring has a plurality of sawtooth structures, wherein each of the sawtooth structures has a sharp end which is adjacent to the corresponding pad.
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