Sealed electrochromic device

Details Sealed electrochromic device Sealed electrochromic device

1991-12-13

1992-08-04

Jackson, Jr., Jerome

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359275, 252582, G02F 115, G02F 1153, F21V 900

Patent

active

051364190

ABSTRACT:
An improved electrochromic device of the type employing: a working electrode, such as a thin essentially transparent layer of indium/tin oxide coated on glass; the working electrode being coated with an electrochromic layer, such as a thin essentially transparent layer of tungsten oxide; the electrochromic layer being coated with an ion conducting layer, such as a thin essentially transparent layer of a perfluorosulfonate polymer; the ion conducting layer being coated with a counter electrode, such as a thin essentially transparent layer of a layer of gold. The improvement is to operate such a device in an environment of a mixture of an inert gas and the vapor of a high dielectric constant material. This can be done in a sealed double pane window by forming such a device on one of the interior surfaces of the window panes and then filling the remaining space between the panes with a mixture of nitrogen and water vapor.

REFERENCES:
patent: 3283656 (1966-11-01), Jones et al.
patent: 3971624 (1976-07-01), Bruesch et al.
patent: 4231641 (1980-11-01), Randin
patent: 4264150 (1981-04-01), Yano et al.
patent: 4347265 (1982-08-01), Washo
patent: 4699471 (1987-10-01), Miyake et al.
patent: 4726664 (1988-02-01), Tada et al.
patent: 4750816 (1988-06-01), Ito et al.

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