Patent ID: 7808630

Claim:
An inspection apparatus of inspecting a screen defect of a liquid crystal display device comprising: a carrier to sequentially transport each glass panel having passed through a previous process station; a backlight unit to irradiate light to a lower surface of the glass panel being transported by the carrier; a lower polarizer disposed above the backlight unit, to polarize the light to be irradiated to the glass panel; an upper polarizer to polarize the light emitted through the glass panel; an exterior-light shield to define a darkroom in a region, to which the light is irradiated by the backlight unit, for inspection of a screen defect of the glass panel; a plurality of vision cameras mounted in the exterior-light shield, to sense an entire display region of the glass panel; and an analyzing system to collect and analyze information sensed by the plurality of vision cameras, wherein the lower polarizer is configured to have two planes for a first mode inspection and a second mode inspection.