Patent ID: 8593167
Filing Date: 2013-11-26
Classification: G01R,H01L

Abstract:
1. A method of testing a semiconductor device including a first conductive pattern formed on a guard ring and a second conductive pattern formed on another guard ring and insulated from said first conductive pattern, said method comprising: a conductive foreign matter test step of measuring the resistance value between said first and second conductive patterns to determine whether conductive foreign matter is present between said first and second conductive patterns; arbitrarily selecting any two first conductive pattern points from a continuum of first conductive pattern points that all together form said first conductive pattern and performing a first open circuit test step of measuring the resistance value between the two arbitrarily selected first conductive pattern points on said first conductive pattern to determine whether there is an open circuit in said first conductive pattern; and arbitrarily selecting any two second conductive pattern points from a continuum of second conductive pattern points that all together form said second conductive pattern and performing a second open circuit test step of measuring the resistance value between the two arbitrarily selected second conductive pattern points on said second conductive pattern to determine whether there is an open circuit in said second conductive pattern, wherein said measurement of said resistance value in each of said test steps is accomplished by pressing probes vertically against said first conductive pattern or said second conductive pattern or both.