| 摘要 |
PROBLEM TO BE SOLVED: To detect a gap of a liquid crystal panel in a vertical orientation system with high accuracy by a hue system. SOLUTION: An inspection device is equipped with: a light source 21; the first polarizing plate 22 for polarizing light from the light source; the second polarizing plate 25 arranged on an outgoing optical path of the liquid crystal panel, in the vertical orientation system entered by polarized light from the first polarizing plate; at least one phase difference plate 23, 24 arranged on the outgoing optical path of the liquid crystal panel between the liquid crystal panel and the second polarizing plate; a photodetection part 26 for detecting the light transmitted through the second polarizing plate; and a gap detection part 27 for detecting a gap of the liquid crystal panel by the hue of light detected by the detection part. COPYRIGHT: (C)2009,JPO&INPIT
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