Patent ID: 8021203

Claim:
A method for producing an electroluminescent element, wherein at least a buffer layer and a luminous layer out of a plurality of electroluminescent layers constituting the electroluminescent element are patterned by photolithography, the method comprises a process of patterning the buffer layer and the luminous layer simultaneously by forming the buffer layer, forming the luminous layer on the buffer layer, forming a photoresist layer on the luminous layer, and subsequently, patterning the buffer layer and the luminous layer, the photoresist used in the process is insoluble in a solvent to be used for forming the buffer layer and in a solvent to be used for forming the luminous layer, the buffer layer formed in the process is insoluble in a photoresist solvent, a photoresist peeling liquid and the solvent to be used for forming the luminous layer and the luminous layer formed in the process is insoluble in the photoresist solvent, a photoresist developing solution, and the photoresist peeling liquid.