A new all solid-state electrochromic display device employing prussian
blue and WO3 particulate film has been fabricated with a PMMA gel ele
ctrolyte that has high conductivity (10 S-3 cm(-1)) at room temperatur
e. After the potential stepping of 5000 times, the transmittance respo
nse only lost less than 10% of the initial magnitude. (C) 1998 Elsevie
r Science S. A.