Patent ID: 8414708

Claim:
A method of cleaning a photomask, the method comprising: providing the photomask including a first region and a second region surrounding the first region, a pattern to be protected being disposed on the first region, and a material to be removed existing on the second region; providing a cleaning apparatus including a guide nozzle having a cleaning liquid nozzle and a blowing nozzle disposed on a rear surface of the cleaning liquid nozzle, the guide nozzle being arranged on at least one inner surface of a frame of the cleaning apparatus; spraying a cleaning liquid from an inner region of the second region toward an outer region of the second region to remove the material from the second region, the cleaning liquid being sprayed from the inner region on which the material exists towards the outer region through the cleaning liquid nozzle; and blowing a gas from the first region toward the second region, the gas being blown from the rear surface of the cleaning liquid nozzle towards the second region through the blowing nozzle, and an area of a bottom surface of the frame of the cleaning apparatus being equal to an area of the first region, or is greater than the area of the first region and smaller than an area surrounded by the material.