INSPECTION METHOD FOR OPTICAL DISPLAY DEVICE AND PATTERN RECOGNITION METHOD FOR OPTICAL MEMBER

摘要

PROBLEM TO BE SOLVED: To provide an inspection method for an optical display device for achieving quality inspection with high reliability and to provide a pattern recognition method for an optical member, by which a boundary between a first region and a second region in a patterned retardation layer can be recognized with high accuracy.SOLUTION: The inspection method aims to inspect an optical device in which an optical member including a retardation layer is bonded to an optical display component having a plurality of pixel rows. A patterned retardation layer 3 has a plurality of strip-like first regions 3R and a plurality of strip-like second regions 3L, in which the plurality of first regions 3R and the plurality of second regions 3L are alternately arranged in a direction intersecting an extending direction of the first region 3R and the second region 3L. The method includes a measurement step of measuring a distance D in a plan view from a boundary line BL detected between the first region 3R and the second region 3L to a reference line FL set along pixel rows in a region between adjoining pixel rows; and a determination step of determining whether the optical display device is defective or not based on the distance D.