To provide a coating liquid supplying method and a device therefor capable of surely and simply supplying a coating liquid only on a required place of the inside surface of a front panel and uniformly forming a coating film on the whole front panel surface without generating coating ununiformity.

The device is provided with a coating liquid supply part 46 moving along the inside surface 10 surrounded by the outer peripheral wall 12a in the front panel 12 of a base material and continuously sweeping and applying the coating liquid on the inside surface of the base material and a coating liquid shielding means 47 provided to cover the outer peripheral wall part 12a of the base material, which is necessary to prevent the sticking of the coating liquid, when the coating liquid supply part 46 is located on the outer peripheral wall 12a and the coating quantity of the coating liquid 29 from the coating liquid supply part 46 on the vicinity part of the outer peripheral wall 120a, which is present in the coating liquid sweeping end side of the coating liquid supply part 46, is set to be larger than that on the center part of the inside surface 10 of the base material.