Patent ID: 7235988
Filing Date: 2007-06-26
Classification: G01N,G01R,G02B

Abstract:
1. A method of high contrast imaging of semiconductor and metallic sites in an integrated circuit (IC) that simultaneously produces two separate exclusive high-contrast images of said IC from one light source, the method comprising: exciting said IC with a focused excitation beam from a light source; transversely and axially scanning said IC by said focused excitation beam; producing simultaneously a high-contrast confocal reflectance image i deriving a first exclusive high-contrast image s(x, y, z) of said semiconductor sites of said IC from a pixel to pixel product of said 1P-OBIC image and said confocal reflectance image using the equation: s(x, y, z)=i deriving a second exclusive high-contrast image m(x, y, z) of said metallic sites of said IC from a product of a complementary to said 1P-OBIC image and said confocal reflectance image using the equation: m(x, y, z)=i