Patent ID: 6031201
Filing Date: 2000-02-29
Classification: B23K,G02F

Abstract:
A laser machining apparatus for forming grooves on a transparent conductive film, comprising:at least one laser and a drive means for driving the laser such that said laser generates at least one laser beam;a phase grating for splitting said laser beam emitted by the laser into a plurality of laser beams;a condensing lens for forming from the plurality of laser beams a line of focused beam spots with generally equal spacing on the transparent conductive film;a moving stage that supports a substrate having the transparent conductive film thereon, and which is controllably moveable in a direction intersecting the line of focused beam spots, when said focused beam spots are incident on said substrate, to cause the line of focused beam spots to form the grooves thereon; anda rotating stage for supporting the phase grating and moving the phase grating rotationally within a plane in order to enable precise adjustment of an angle at which said plurality of laser beams impinge said substrate to thereby precisely control and vary the spacing between the focused beam spots produced in a direction orthogonal to a direction in which the moving stage supporting the substrate is moved.