Liquid-crystal display with polarizer, and method of making the same
AssigneeSiemens Aktiengesellschaft
InventorRudolf Poensgen
Life of this patent
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Abstract
A liquid-crystal display having two carrier plates, between which a liquid crystal material is enclosed in hermetically sealed relation, and which have respective electrode coatings on their inner surfaces, at least one carrier plate having a polarizer disposed on the outer surface thereof, comprising a chemically inert, transparent and optically inactive protective foil and a dichroitic layer disposed between the protective foil and the carrier plate, with the marginal edges of the polarizer being covered with coating means for sealing the dichroitic layer from atmospheric influences, particularly humidity, and method of making the same.
Claims8
In a liquid-crystal display having two carrier plates between which a liquid crystal material is enclosed in hermetically sealed relation, and having respective electrode coatings on their inner surfaces, the combination of at least one carrier plate having a polarizer disposed on the outer surface thereof, which comprises a chemically inert, transparent and optically inactive protective foil and a dichroic layer disposed between the protective foil and the carrier plate, the marginal edges of the polarizer being covered with coating means for sealing the dichroic layer from atmospheric influences, particularly humidity.
A method of forming a polarizer for a liquid-crystal display having two carrier plates between which a liquid crystal material is enclosed in hermetically sealed relation, and having respective electrode coatings on their inner surfaces, comprising the steps of disposing a dichroic layer on the outer surface of at least one carrier plate, super-imposing a layer of a chemically inert, transparent and optically inactive protective material on said dichroic layer, and covering the marginal edges of the polarizer with a protective coating to seal the dichroic layer from atmospheric influences, particularly humidity.
Dependencies are inferred from the claim text.