Die coater and inspection device thereof

A die coater inspection device for inspecting a die coater comprising a first die, a second die, and a shim formed between the first die and the second die, the die coater inspection device comprising:

• a rail formed to be fixed long on one surface of the first die in a longitudinal direction of the die coater;
• and
• at least one sensor assembly configured to move along the rail and inspect a lip or the shim of the die coater,
• wherein the sensor assembly comprises:
• a movable part configured to move along the rail in the longitudinal direction of the die coater;
• and
• a sensor module connected to the movable part, and configured to move in a thickness direction of the die coater and inspect the lip or the shim.