| 摘要 |
PURPOSE:To facilitate the connection of board electrodes applied when the drive test of a liquid crystal display panel is performed, by electrically conducting one board electrode and the other board electrode via a through hole pressed-in with a conducting fluid. CONSTITUTION:When the drive test of a liquid crystal display panel 1 is to be performed, the upper face side of a printed board 4 is brought into near contact with the transparent board 2 of the liquid crystal display panel 1, and an extracting electrode 3 and an output electrode 5 are faced to each other. A piston 12 is lifted to pressurize the mercury 13 in a cylinder 11. The mercury 13 is lifted in a through hole 10, and the output electrode 5 and the extracting electrode 3 are electrically conducted through the mercury 13. The liquid crystal display panel 1 can be driven through the driving circuit of the printed board 4. The printed board 4 and the transparent board 2 can properly be positioned, and no test error is caused to the liquid crystal display panel 1. |
