Patent ID: 7147992

Claim:
A method for manufacturing an electroluminescent element by photolithography, comprising: a process of providing a light-emitting portion of at least one color, having only one photoresist layer on a surface thereof, on a substrate; a process of forming a heterochromatic light-emitting layer by coating the substrate with a heterochromatic light-emitting layer forming coating solution which expresses a different color from the color of the above light-emitting portion; a process of forming a photoresist layer for the heterochromatic light-emitting layer by coating the heterochromatic light-emitting layer with a photoresist; a process of pattern-exposing and developing the photoresist layer for the heterochromatic light-emitting layer, such that only portions of the photoresist layer for the heterochromatic light-emitting layer which the heterochromatic light-emitting portion is to be formed, are remained; and a process of forming the heterochromatic light-emitting portion, having only the photoresist layer for the heterochromatic light-emitting layer on a surface thereof, in a pattern by removing portions of the heterochromatic light-emitting layer which the photoresist layer for the heterochromatic light-emitting layer is removed, to provide the light-emitting portion of at least one color having only one photoresist layer on the surface thereof, and the heterochromatic light-emitting portion having only the photoresist layer for the heterochromatic light-emitting layer on the surface thereof, on the substrate.