Patent ID: 6563321
Filing Date: 2003-05-13
Classification: G01R,Y10S

Abstract:
A method for detecting a line-short between conductive layers comprising a step of detecting a potential distribution of said conductive layers while applying a DC voltage thereto, wherein said potential distribution detecting step comprises the steps of:detecting a first potential distribution for a wide range along a first direction perpendicular to said conductive layers, to determine a first location whose potential is at an intermediate level of said DC voltage; detecting a second potential distribution for a narrow range along said first direction around said first location while shifting along a second direction in parallel to said conductive layers, to determine a second location whose difference in potential between said conductive layers is minimum, thus determining that one line-short is generated at a location defined by said first and second locations; and detecting a third potential distribution for a narrow range along said second direction around said first and second locations, to determine a third location whose potential is sharply changed, thus determining that said one line-short is generated at a location defined by said first and third locations.