Electrochemical display element and electrochemical display

An electrochemical display apparatus characterized by comprising a plurality of electrochemical display devices arranged in a plane form, each electrochemical display device having:

• a first transparent electrode;
• an electrolyte layer containing a coloring material which colors by a coloring means and electrochemical reduction or oxidation, accompanied by deposition or dissolution;
• a second electrode having said electrolyte layer disposed between said first transparent electrode and said second electrode;
• and a third electrode independent of said first transparent electrode and said second electrode.

A method for producing an electrochemical display device, characterized by comprising the steps of:

• forming a first transparent electrode on a transparent support;
• forming an electrolyte layer containing a coloring material which colors by a coloring means and electrochemical reduction or oxidation, accompanied by deposition or dissolution;
• forming a second electrode having said electrolyte layer disposed between said first transparent electrode and said second electrode;
• and
• forming a third electrode independent of said first transparent electrode and said second electrode.

A method for producing an electrochemical display apparatus, characterized by comprising the steps of:

• forming a first transparent electrode on a transparent support;
• forming an electrolyte layer containing a coloring material which colors by a coloring means and electrochemical reduction or oxidation, accompanied by deposition or dissolution;
• forming a second electrode having said electrolyte layer disposed between said first transparent electrode and said second electrode;
• and
• forming a third electrode independent of said first transparent electrode and said second electrode.