Claims
- 1. An electrochromic display device comprising in layered form, a first transparent substrate with a selectively actuatable transparent electrode thereon and a first electrochromic layer on said transparent electrode, a counterelectrode having a second electrochromic layer thereon, with an electrolyte-separator layer between said electrochromic layers, wherein the improvement comprises a solid electrolyte-separator comprised of a soluble polymer cationic ion exchange resin in the acid form, chemically wetted.
- 2. An electrochromic display device in accordance with claim 1 wherein said resin comprises a soluble polystyrene sulfonic acid polymer cationic ion exchange resin.
- 3. An electrochromic display device in accordance with claim 2 wherein said first electrochromic layer comprises tungsten (VI) oxide, and said second electrochromic layer comprises tungsten oxide heat treated in a hydrogen or forming gas atmosphere.
- 4. An electrochromic display device in accordance with claim 2 wherein said first electrochromic layer comprises tungsten (VI) oxide and said second electrochromic layer comprises tungsten surface oxidized and heat treated in a hydrogen or forming gas atmosphere.
- 5. An electrochromic display device in accordance with claim 3 wherein the thicknesses of said first electrochromic layer said said second electrochromic layer are on the ratio of 1:5 at least.
- 6. An electrochromic display device in accordance with claim 4 wherein the thicknesses of said first electrochromic layer and said second electrochromic layer are on the ratio of 1:5 at least.
- 7. An electrochromic display device in accordance with claim 3 wherein said electrolyte-separator layer has an opacifying agent incorporated therein, and is chemically wetted with water.
- 8. An electrochromic display device in accordance with claim 3 wherein said electrolyte-separator layer has an opacifying agent incorporated therein, and is chemically wetted with an aqueous solution of said soluble polystyrene resin.
- 9. An electrochromic display device in accordance with claim 4 wherein said electrolyte-separator layer has an opacifying agent incorporated therein, and is chemically wetted with water.
- 10. An electrochromic display device in accordance with claim 4 wherein said electrolyte-separator layer has an opacifying agent incorporated therein, and is chemically wetted with an aqueous solution of said soluble polystyrene resin.
- 11. An electrochromic display device in accordance with claim 5 wherein said electrolyte-separator layer has an opacifying agent incorporated therein, and is chemically wetted with water.
- 12. An electrochromic display device in accordance with claim 6 wherein said electrolyte-separator layer has an opacifying agent incorporated therein, and is chemically wetted with an aqueous solution of said soluble polystyrene resin.
RELATED APPLICATIONS
This application is a continuation in part of application Ser. No. 616,224, filed on Sept. 24, 1975 and now abandoned.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
3840288 |
Schnatterly |
Oct 1974 |
|
3879108 |
Berets |
Apr 1975 |
|
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
616224 |
Sep 1975 |
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