Electrochromic display device and method of producing it

Details Electrochromic display device and method of producing it Electrochromic display device and method of producing it

G - Physics

02

F

345/6

G02F 1/153 (2006.01) C23C 14/08 (2006.01) G02F 1/15 (2006.01)

Patent

CA 2034056

66623-194 ABSTRACT Disclosed is an all solid type electrochromic display device which comprises first and second conductive layers and sandwiched between them, at least, an electrochromic layer of tungsten oxide and a solid electrolyte layer. The tungsten oxide of the electrochromic layer has an absorption spectrum, as measured by FT-IR, which meets the following formulae (A) and (B): Image (A) Image (B) wherein A1400, A1800, A2500, A4000 and A3400 respectively represent the absorbance of 1400cm-1, 1800cm-1, 2500cm-1, 4000cm-1 and 3400cm-1 and A* represents the highest absorbance within a range from 1600cm-1 to 1650cm-1. The electrochromic display device is produced by vacuum depositing the tungsten oxide elec- trochromic layer on another layer, introducing oxygen as a reaction gas at a pressure of from 2 X 10-5 to 1 X 10-3 torr, at a deposition rate of from 0.2 to 0.4 nm/second and at a substrate surface temperature of from 20°C to 180°C.

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