PRODUCTION OF ELECTROCHROMIC ELEMENT

摘要

PROBLEM TO BE SOLVED: To provide a process for producing an EC element which makes it possible to obtain the EC element having the characteristics better heretofore relating to the visible light transmittance and the visible light transmittance of a non-display section at the time of decoloring of the EC element and the response speed coloring and decoloring colors. SOLUTION: The process for producing the electrochromic element by disposing at least an electrochromic layer 23 and a pair of electrode layers 21, 22 holding this electrochromic layer 23 on substrates 20 or between these substrates is the process for producing the electrochromic element which is characterized in that at least one layer among the respective layers are heat treated in an oxygen-contg. atmosphere after deposition.