Patent ID: 7776492

Claim:
A method of manufacturing a photomask, comprising: forming a first light-shielding pattern on a substrate using a photolithographic method; and modifying the first light-shielding pattern by forming a second light-shielding pattern on the substrate using the droplet ejection method, the forming of the second light-shielding pattern including ejecting droplets of a liquid containing a light-shielding material at predetermined positions on the substrate using the droplet ejection method, drying the liquid to form the second light-shielding pattern on the substrate, the second light-shielding pattern containing the light-shielding material, and before the drying of the liquid, photo-detecting a top position of droplets landed over the substrate, the drying of the liquid including radiating a laser light onto the liquid at the top position of the droplets detected by the photo-detecting.