Patent ID: 7449215

Claim:
A method of manufacturing a display device including a first color pixel and a second color pixel that are disposed on a substrate and emit light of different wavelengths, a first diffraction grating that is provided in association with the first color pixel, and a second diffraction grating that is provided in association with the second color pixel and has a grating pitch that is different from a grating pitch of the first diffraction grating, the method comprising: a step of forming an insulating layer on the substrate; a step of forming a resist for separating areas corresponding to the respective color pixels on the insulating layer: a step of coating a first mask material on an area associated with the first color pixel on the insulating layer; a step of coating a second mask material on an area associated with the second color pixel on the insulating layer; and a step of patterning the insulating layer using the first mask material and the second mask material, and forming the first diffraction grating and the second diffraction grating, respectively, wherein the first mask material and the second mask material are coated by an ink jet method.