| 摘要 |
<p>PURPOSE: To shorten an inspection time and to precisely inspect a voltage state of a pixel electrode in the inspection of a liquid crystal display substrate before sealing a liquid crystal in it. CONSTITUTION: A sensor element 2 simultaneously accompanying an optical change according to respective voltage states for plural pixel electrodes 12 is made approach to or abutted on the liquid crystal display substrate 1, and a light source 3 radiating light 6 from a substrate rear surface in the surface direction is provided on the substrate rear surface, and the device is provided with a light detection part 5 making the light passing through the sensor element 2 optically changed by the voltage of the pixel electrode 12 and whose polarization state is changed incident on a polarizing plate 4, and converting the light to a light quantity proportioning to the polarization change amount by the polarizing plate 4, and detecting the light quantity and converting it to an electric signal.</p> |
