Patent ID: 6899916
Filing Date: 2005-05-31
Classification: C04B,H05B,Y10S,Y10T

Abstract:
1. A method for manufacturing an EL device comprising an electrically insulating substrate, a patterned first electrode layer formed above the substrate, a dielectric layer covering at least a part of the first electrode layer, a light emitting layer and a second electrode layer successively formed above the dielectric layer, said dielectric layer having a multilayer structure including a first dielectric layer in the form of a thick film and a second dielectric layer formed by a solution coating-and-firing technique, said method comprising the steps of forming one or more first dielectric layers; forming a buffer layer below the one first dielectric layer or forming buffer layers between the more than one first dielectric layers, wherein the buffer layer is formed by sputtering or evaporation when the buffer layer is formed below the one first dielectric layer, and wherein the buffer layers are formed by a solution coating-and-firing technique when the buffer layers are formed between the more than one first dielectric layers, and wherein said one or more first dielectric layer is formed by firing a powder insulating material according to a think-film technique.