Multi-color electrochromic cells having solid polymer electrolyte layer with organic electrochromic material dissolved therein
First Claim
1. A solid-state multi-color electrochromic display cell comprising an electrochromic half cell, a counter half cell, and a separator therebetween, said electrochromic half cell comprising a display electrode comprising an electronically conducting film on a substantially transparent plate and a solid electrolyte layer comprising a water soluble organic electrochromic chemical dissolved in water associated with an ionically conducting polymer and a supporting electrolyte between said electronically conducting film and said separator.
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Abstract
A solid-state multi-color electrochromic display cell having a water soluble organic electrochromic chemical dissolved in water associated with an ionically conducting polymer of a solid electrolyte. The water may be present in a water containing polymer or may be water of emulsion of a non-water containing polymer. The solid electrolyte layer has one side immediately adjacent a display electrode and the other side adjacent a cell separator.
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Citations
30 Claims
- 1. A solid-state multi-color electrochromic display cell comprising an electrochromic half cell, a counter half cell, and a separator therebetween, said electrochromic half cell comprising a display electrode comprising an electronically conducting film on a substantially transparent plate and a solid electrolyte layer comprising a water soluble organic electrochromic chemical dissolved in water associated with an ionically conducting polymer and a supporting electrolyte between said electronically conducting film and said separator.
- 11. In a solid-state multi-color electrochromic display cell of the type comprising an electrochromic half cell, a counter half cell, and separator therebetween, and having a display electrode having an electronically conducting film on a substantially transparent plate, the improvement comprising a water soluble organic electrochromic chemical dissolved in water associated with an ionically conducting polymer of a solid electrolyte layer, said solid electrolyte layer further comprising a supporting electrolyte said electrolyte layer being between said electronically conducting film and said separator, one side of said electrolyte layer being immediately adjacent said electronically conducting film.
- 19. A solid-state multi-color electrochromic display cell comprising an electrochromic half cell, a counter half cell, and a separator therebetween, said electrochromic half cell comprising a display electrode comprising an electronically conducting film on a substantially transparent plate and a solid electrolyte layer comprising a water soluble organic electrochromic chemical dissolved in water associated with an ionically conducting polymer, and a supporting electrolyte between said electronically conducting film and said separator, said separator comprising an insoluble cation conducting membrane and said counter half cell comprising an ionically conducting polymer layer with supporting electrolyte immediately adjacent said separator, a redox electroactic chemical and a counter electrode.
Specification