Patent ID: 8012331
Filing Date: 2011-09-06
Classification: G01R

Abstract:
1. A method of making a probe, comprising: step 1 applying a sacrifice layer directly to the whole upper surface of a silicon wafer, coating the sacrifice layer at the upper surface thereof with a first photoresist, and attaching a first mask having a first pattern of a main probe to the upper surface of the first photoresist, wherein the first pattern comprises: a body part bent at the middle thereof, a connection part integrally formed with the lower end of the body part, and a tip part integrally formed with the upper end of the body part; step 2 exposing and developing the first photoresist to form the first pattern of the main probe on the first photoresist; step 3 performing electrolytic plating on the upper surface of the sacrifice layer and the first pattern of the photoresist to form a first metallic film having a shape of the main probe; step 4 coating a second photoresist on the upper surface of the first photoresist and the first metallic film, and attaching a second mask having a second pattern of an auxiliary probe to the upper surface of the second photoresist, wherein the second pattern comprises: a body part bent at the middle thereof and identical to the body part of the main probe, and a connection part integrally formed with the lower end of the body part and identical to the connection part of the main probe, wherein the second mask is not provided with a tip part; step 5 exposing and developing the second photoresist to form the second pattern of the auxiliary probe on the second photoresist; and step 6 performing electrolytic plating on the upper surface of the first metallic film and the second pattern of the second photoresist to form a second metallic film having a shape of the auxiliary probe; and step 7 removing the first photoresist and second photoresist, and etching the sacrifice layer to separate the probe from the silicon wafer.