Method for forming electrochromic film

Details Method for forming electrochromic film Method for forming electrochromic film

1979-06-05

1981-08-04

Smith, Ronald H.

Coating processes

Electrical product produced

Metallic compound coating

4273762, 4272481, 427255, 4272552, 350357, B05D 512, G02F 101

Patent

active

042822726

ABSTRACT:
An amorphous electrochromic film prepared by vacuum evaporation under relatively high pressure of 2.times.10.sup.-4 -2.times.10.sup.-3 torr.
The evaporated film is porous with packing density less than 0.65 and exhibits excellent reversibility after heat treatment at 250.degree. C.-350.degree. C. whereby it is optimum for an electrochromic device sealed with a sealant of tetrafluoroethylene-ethylene copolymer having no reactivity with electrolyte, low moisture permeability, excellent chemical properties and good adhesiveness.

REFERENCES:
patent: 3978007 (1976-08-01), Giglia et al.
Green et al., Thin Solid Films, 24 (1974), S45-S46, A Solid State Electrochromic Cell.
Brown, Boveri Symposium on Nonemissive Electrooptic Displays, .COPYRGT.1976, Plenum Press, N.Y.
Giglia, Features of an Electrochromic Display Device, American Cyanamid Co., 5-11-76.
Green et al., Thin Solid Films, 40 (1977), L19-L21, Solid State Cells: The M-.beta.-alumina/WO.sub.3 system.

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