Patent ID: 8148050

Claim:
A method for fabricating a probe needle tip of a probe card, comprising: a first operation of applying a photoresist on a seed layer; a second operation of exposing and developing the photoresist according to a mask having a predetermined pattern, thus forming an opening in the photoresist according to the pattern of the mask; a third operation of filling the opening with a first metal; a fourth operation of evenly grinding the first metal to be flush with the photoresist and etching a surface of the photoresist to be lower than a surface of the first metal; a fifth operation of depositing an additional seed layer on the photoresist, laminating a second metal layer on the additional seed layer, and then conducting a grinding process to expose the first metal layer through the second metal layer; and a sixth operation of repeating the above-mentioned steps to obtain a desired number of layers; and a seventh operation of removing the second metal and photoresist using an etchant, thus forming the probe needle tip.