Patent ID: 9563802
Date: 2017-02-07
CPC Classifications: G06K

Claim:
1. A fingerprint identification chip with enhanced electrostatic discharge (ESD) protection, comprising: a plurality of receiving pads disposed on a surface of a chip and arranged in a matrix format, each said receiving pad including a central region and a peripheral region, and the peripheral region surrounding at least an edge of the central region; wherein the peripheral region of the receiving pad is higher than the central region; wherein a top metal layer in the peripheral region of the receiving pad is higher than a top metal layer in the central region of the receiving pad; wherein the central region of the receiving pad comprises: wherein the peripheral region of the receiving pad comprises: wherein the receiving pad comprises a protection layer that covers the top metal layer and a top dielectric layer in the central region, and covers the top metal layer and a top dielectric layer in the peripheral region.