A method and apparatus for manufacturing an EL layer of uniform thickness, causing effective light emission of pixel openings and manufacturing an organic EL display showing sufficient brightness and excellent in practicability, by an ink jet method. A method and apparatus for manufacturing a color filter excellent in practicability by an ink jet method, in which a dye layer with uniform thickness is formed and optical coloring of uniform tone is conducted at pixel openings. The method includes: a process of discharge-placing at least an organic EL material in the form of solution on a substrate; and a process of drying the organic EL material in the form of ink placed on the substrate by heating, and the organic EL material is dried by heating over thereof.