Patent ID: 7342706
Filing Date: 2008-03-11
Classification: B82Y,G02F

Abstract:
1. An electrochromic element comprising: a semiconductor material which is a nanoporous semiconductor material having a roughness factor of 20 or higher; and an electrochromic material on a surface of the semiconductor material, the electrochromic material comprising at least one of electrochromic materials represented by formulas (1), (2) and (3): wherein V 1 , V 2 , V 3 , V 4 , V 5 , V 6 , V 7 , V 8 , V 9 , V 10 , V 11 , V 12 , V 13 , V 14 , V 15 , V 16 , V 17 , V 18 , V 19 , V 20 , V 21 , V 22 , V 23 and V 24 each independently represents a hydrogen atom or a monovalent substituent; R L n M in the case n