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(12) United States Patent ao) Patent No.: us 6,344,918 Bi
Berneth et al. (45) Date of Patent: Feb. 5,2002
(54) ELECTROCHROMIC CONTRAST-PLATE
The invention relates to an electrochromic contrast plate which is either arranged as a discrete unit in front of the screen or is connected to the outer surface of the screen through a common sheet, consisting of a pair of transparent glass or plastic sheets which are provided, on one side each, with an electroconductive, transparent coating, and which are joined together on the sides of their conductive coating via a sealing ring, and in which the volume formed by the two sheets and the sealing ring is filled with an electrochronic medium, characterized in that the electrochromic medium is a liquid, a gel or a polymer. The invention furthermore relates to an electrochromic contrast plate with integrated touch screen which has a larger base area than the area of the screen, and, at at least one of the faces of the outer sheet (outer plate) of the electrochromic contrast plate, a radiation source is arranged whose light enters the outer plate and illuminates it, and, at the inner sheet (carrier plate), in the region which projects beyond the screen area, a photodetector is mounted in whose photosensitive solidangle region part or all of the carrier plate is located, if it projects beyond the screen area. The invention furthermore relates to electrochromic side-chain oligomers or polymers which can be used as electrochromic media.
22 Claims, 2 Drawing Sheets
Adv. Mater. 3, (month unavailable) 1991, pp. 225-236, Siegfried Hiinig and Peter Erk OCNQIs-New Electron Acceptors for Charge-Transfer Complexes and Highly Conducting Radical Anion Salts.
J. Am. Chem. Soc, 117 (month unavailable) 1995, pp. 8528-8535, Gregory V. Tomomos, Martin G. Bakker, Ping Wang, M.V. Lakshmikantham, Michael P. Cava and Robert M. Metzger, Dithiadiazafulvalenes-New Strong Electron Donor. Synthesis, Isolation, Properties, and EPR Studies. J. Chem. Soc. Perkin II, (month unavailable) 1990, pp. 1777-1783, Martin R. Bryce et al, Synthesis and Redox Behaviour of Highly Conjugated Bis(benzo-l,3-dithiole) and Bis(benzothiazole) Systems containing Aromatic Linking Groups: Model Systems for Organic Metals.
J. Org. Chem. (month unavailable) 1992,57, pp. 1849-1855, Gerard A. Grispino et al Synthesis of Tripyridiniumylpropenyl Anions from Tripyridiniumylcylopropanes and cyclopropenes.
J. of Am. Chem. Soc. 99, Aug. 31, 1977, pp. 6120-6122, Michael Horner & Siegfried Hiinig, Bicyclo[1.1.0]butanes. A New Synthetic Route and Valance Isomerizations.
David A. Glocker, Ismat Sha (Ed.) Handbook of Thin Film Process Technologie, Institute of Physics Publishing, Bristol and Philadelphia (month unavailable) 1995.
Colour physics for Industry, Roderick McDonald, ed., Society of Dyers and Colourists. (month unavailable) 1987, pgs v to xi, Dyers' Compman Publications Trust.