AN ARRAY TESTER

摘要

PURPOSE: An array test device is provided to enable a detecting unit to measure the amount of light passing a modulator in order to accurately determine whether an electrode of a panel is defective, thereby increasing reliability during a process for detecting a defect of the panel of the array test device. CONSTITUTION: At least one modulator(110) is arranged in a direction of one side of a substrate(10) to be tested. The modulator is moved along with the first axis. At least one light source(120) is formed in a size corresponding to the modulator. The light source is arranged to emit light to each modulator in a direction of the other side of the substrate. When testing the substrate, the light source is moved to be located at the same location as the modulator. A modulator transfer module(130) transfers the modulator toward the first axis.