| 摘要 |
PURPOSE:To make possible the uniform coloration in a short period with small current even in a display part of a large area by forming plural solid-state electrochromic elements in proximity to each other on the same substrate and connecting the respective elements in series. CONSTITUTION:A transparent ITO electrode having 0.1mum thickness is formed by a vacuum deposition method as a lower electrode 1 on the substrate S and is divided by photoetching to 4 pieces. An EC layer 2 is formed to 1.1mum thickness thereon by mask vapor deposition and an upper electrode 3 is further formed thereon. The electrode 3 is connected to the adjacent lower electrodes 1 then the four solid-state ECDs connected in series are formed. The entire part colors at 0.05 ampere current in 5sec when 5.4V voltage is impressed to the terminals 4a, 4b thereof. Since the ECDs are connected in series, the uniform coloration with the small current in a short period is made possible even with the larger area.
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