Patent ID: 6300594
Filing Date: 2001-10-09
Classification: B23K,G02F,H01L,H05K

Abstract:
A method of machining a transparent electrically conductive film formed on a surface of a transparent insulating substrate to remove portions of said transparent electrically conductive film by selectively irradiating a laser beam to said transparent electrically conductive film on said transparent insulating substrate, said method comprising the steps of:mounting the transparent insulating substrate with the transparent electrically conductive film onto a substrate carrier including a recess below at least a portion of the transparent insulating substrate to be irradiated with said laser beam;making uniform an energy distribution on a cross section of said laser beam; andcontrolling said laser beam based on an output of a sensor for sensing a moving distance of said transparent insulating substrate in such a manner that a repeating period of said laser beam is changed in accordance with a moving speed of said transparent insulating substrate.