Patent ID: 9626752
Date: 2017-04-18
CPC Classifications: G01B,G01N,G06T

Claim:
1. An integrated inspection system for three-dimensional inspection of leads of an integrated circuit device, the integrated inspection system comprising: an integrated circuit device comprising a plurality of leads mounted on the integrated circuit device; a first light source having a first color, the first light source disposed at an acute angle with respect to the integrated circuit device, and configured to illuminate the leads such that light emitted from the first light source creates lead shadows of the leads in a first color image plane; a second light source having a second color different from the first color, the second light source disposed in front of a surface of the integrated circuit device on which the leads are mounted, and configured to illuminate the leads in a second color image plane; a RGB color camera configured to image the illuminated leads and lead shadows in the first and second color image planes of a color image of the integrated circuit device; and a processor coupled to the camera, the processor configured to analyze the first and second color image planes of a single RGB color image captured by the RGB color camera to detect three-dimensional bent lead defects in the leads mounted on the integrated circuit device, wherein the processor uses information from the first color image plane to generate a first image illustrating the leads in two dimensions and the lead shadows, and wherein the processor uses information from the second color image plane to generate a second image illustrating the leads in two dimensions, and wherein the processor compares a length of a two-dimensional lead and a lead shadow thereof from the first image with a length of a corresponding two-dimensional lead from the second image to determine a length of the lead shadow for each of the leads.