The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 22, 2000
Filed:
Oct. 16, 1996
Tatsuya Moriike, Fukushima-ken, JP;
ALPS Electric Co., Ltd., Tokyo, JP;
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.