Electrochromic display device with a contrast-enhancing adjuvant and method of producing the same
AssigneeBBC Brown, Boveri & Company, Limited
InventorsJiri Dlouhy, Hans-Rudolf Zeller
Life of this patent
Estimating the term…
Abstract
An improved electrochromic display device and a method of manufacturing it are disclosed. The improved device includes at least one layer of light absorbing and/or light reflecting fabric as a contrast enhancing adjuvant in the electrolyte of the device. According to the method of the invention a transparent support, at least one layer of fabric and a counter-electrode are assembled in laminated form and sealed together by an adhesive applied at the edges of the assembled structure.
Claims3
In an electrochromic display device of laminated construction including a liquid electrolyte, a solid electrochromic layer and means acting as a contrast enhancing adjuvant, the improvement comprising:
- a. fabric means in the electrolyte for acting as a contrast enhancing adjuvant,
- b. the fabric means comprising layers of a fabric with a mesh aperture of approx. 100 .mu.,
- c. the layers comprising at least one layer incorporating a dye or being provided with a layer of electrolyte-resistant metal,
- d. the layer incorporating a dye being of an electrically insulating material or being positioned on one side of a layer of a transparent and electrically insulating fabric and
- e. the layer being provided with a layer of electrolyte-resistant metal comprising an electrically insulating layer disposed on the surface of the metal or being positioned on one side of a layer of a transparent and electrically insulating fabric and
- f. the electrolyte being free of pigments.
Dependencies are inferred from the claim text.