1131. With the LCD panel 1131 aligned on the test board 11322, the operator inserts the jig pins 11326 formed at the test board 11322 into the holes 11327 formed in the jig 11332 to position the polarizer 11330 on the LCD panel 1131. With the polarizer fixed, a signal is applied to the LCD panel 1131 and a transmissivity of light transmitted through the LCD panel is changed according to a signal applied to the LCD panel 1131. The operator observes the light transmitted through the polarizer 11330 to evaluate the quality of the LCD panel.
The jig 11332 supports the polarizer 11330. The operator manipulates the jig 11332 rather than the polarizer 11330 to position the polarizer 11330 on the test board 11322. The jig pins 11326are inserted into the holes 11327 formed in the jig 11332 to fix the jig 11332, and thus the polarizer 11330, onto the test board 11322.
However, the above described visual inspection apparatus for the LCD panel may generate problems as follows.
In order to fix the polarizer 11330 by inserting the jig 11332 into the jig pins 11326, the operator must manually hold the jig 11332 while inserting the jig pins 11326 of the test board 11322 into the holes 11327 of the jig 11332. However, with a the large-sized LCD panel 1131, the corresponding large size of the polarizer 11330 makes it physically difficult or impossible for the operator to manually insert the jig pins 11326 into the holes 11327 of the jig 11332. In addition, while attaching