ELECTROCHROMIC FORMULATION WITH AT LEAST TWO DYE SYSTEMS, METHOD FOR PRODUCTION THEREOF AND ELECTROCHROMIC COMPONENT
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Abstract
Electrochemically active formulations may be used for flashing electrochromic displays, in particular for those that in addition to blinking can switch on a permanent symbol with the blinking display. The formulations contain at least two chemically different dye systems. The formulations provide a first dye system that is reversibly switchable at a low voltage, hence suitable for blinking representation of symbols. A second dye system is activated at a higher voltage and is suitable for permanent display of symbols due to the bistability or irreversibility thereof.
8 Citations
18 Claims
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1-9. -9. (canceled)
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10. An electrochromic formulation for an organic electronic component, comprising:
at least two chemically different color systems, including a first color system reversibly switchable at a low voltage and a second color system activatable at a higher voltage. - View Dependent Claims (11, 12, 13, 14)
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15. A process for producing an electrochromic formulation, comprising:
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mixing an electrochromic color system which is reversibly switchable at low voltage with a bistably or irreversibly switchable color system to obtain a mixture; and adding solvents to the mixture to produce the electrochromic formulation as a paste applicable to electrode layers.
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16. An electrochromic organic electronic component, comprising:
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at least two electrodes; and at least one active electrochromic organic layer, between the at least two electrodes, providing at least two electrochromic color systems switchable at different voltages and/or power pulse lengths. - View Dependent Claims (17, 18)
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Specification