METHOD FOR FORMING BLACK MASK OF MICROLENS ARRAY

摘要

PROBLEM TO BE SOLVED: To provide a method for forming a black mask by which a black mask of a microlens array can be easily formed at a low cost. SOLUTION: The method for forming a black mask of a microlens array is carried out in the following process. A black ink composition with low viscosity is applied on the whole surface in the convex lens side of a microlens array and dried at normal temperature. Then a liquid absorbing elastic material impregnated with a solvent which can dissolve the dried ink composition is brought into contact with the convex lens side under pressure so that the dried ink composition on the convex lenses of the microlens array is dissolved and absorbed by the liquid absorbing elastic material. The dried ink composition in the valley part between the convex lenses of the microlens array is left to remain to form a black mask.