Patent ID: 6522719
Filing Date: 2003-02-18
Classification: G01B,H01L

Abstract:
A method for measuring a height of a bump formed on a work of substrate, said method comprising:irradiating X-rays, having a predetermined wavelength and an incident intensity, toward a first work of substrate which is the same as the above-mentioned work of substrate, but no bump is formed thereon, and detecting a first X-ray transmitted intensity at a position at which the bump is to be formed; irradiating X-rays having the same wavelength and incident intensity toward a material constituting the bumps and detecting a linear absorption coefficient of the X-ray; memorizing the first X-ray transmitted intensity and the linear absorption coefficient as known data; and irradiating X-rays having the same wavelength and the same incident intensity toward a second work of substrate which is the same as the above-mentioned work of substrate, but a bump is formed thereon, and detecting a second X-ray transmitted intensity at a position on which the bump is formed; and determining the height of the bump from the second X-ray transmitted intensity on the basis of the known data.