PURPOSE: To form readily a micro-lens which does not distinguish lens effects and which has excellent lightproof and fading-proof characteristics even in the case of a clear mold installation, etc.

CONSTITUTION: After a surface protection film 8 and a flatting layer 9 are formed on a CMD device, a transparent film 10 composed of SiO2 is formed. Next, after, a flat dividing transparent film 10a is formed in a part corresponding to a gate electrode of a CMD by an RIE method, a high refractive index film 12 composed of Si3N4 having a higher refractive index than the dividing transparent film 10a is formed on the entire surface. Next, a curved-surface-like side wall 13 is formed on the both side surfaces of the dividing transparent film 10a by the RIE method and a micro-lens is constituted of the flat dividing transparent film 10a and the curved-surface-like side wall 13.