Patent ID: 8169605

Claim:
A method of inspecting a liquid crystal display panel, comprising: providing a liquid crystal display panel to be inspected; turning on a backlight unit that is disposed under the liquid crystal display panel to emit light toward the liquid crystal display panel; driving the liquid crystal display panel by applying test signals to the liquid crystal display panel at a predetermined period; detecting defects by taking an image of the liquid crystal display panel on a period shorter than the driving period of the liquid crystal display panel; and detecting defects created in the liquid crystal panel, which blink in accordance with a period of the test signals of the liquid crystal display panel, wherein the backlight unit is periodically turned on and off and the liquid crystal display panel is driven on a period shorter than the turning-on period of the backlight unit, wherein when the liquid crystal display panel is turned on/off by at least one time during the on-state of the backlight unit, defects existing inside the liquid crystal display panel are detected in a blinking state, wherein a driving period of the liquid crystal display panel is set on a period half the turning-on period of the backlight unit, the image take speed of the camera is set on ¼ of the backlight turning-on period.