Laser beam machine and liquid crystal display device fabrication

Details Laser beam machine and liquid crystal display device fabrication Laser beam machine and liquid crystal display device fabrication

1996-10-16

2000-02-22

Mills, Gregory

Electric heating

Metal heating

By arc

21912177, 21912185, B23K 2606

Patent

active

060282886

ABSTRACT:
To provide a liquid crystal display device fabrication method making it possible to form a desired opaque film around a color filter at a low cost.
Color filters 52 are locally removed through laser trimming by a laser beam machine provided with a machine body in which a rotatable phase difference plate and a beam splitter are arranged in the optical path of a laser beam and moreover provided with an XY table, mounting a workpiece in which a plurality of transparent electrodes 51 and color filters 52 superposed on transparent electrodes 51 are previously formed on a transparent substrate on the XY table, and applying a plurality of beam spots S to the workpiece in a direction perpendicular to the longitudinal direction of color filters 52 at a certain pitch.

REFERENCES:
patent: 4533813 (1985-08-01), Rayburn et al.
patent: 4680855 (1987-07-01), Yamazaki et al.
patent: 5340619 (1994-08-01), Chen et al.
patent: 5373137 (1994-12-01), McLaughlin
patent: 5708252 (1998-01-01), Shinohara et al.

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