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Color filter array for liquid crystal display device

  • US 4,877,697 A
  • Filed: 05/26/1988
  • Issued: 10/31/1989
  • Est. Priority Date: 05/26/1988
  • Status: Expired due to Term
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First Claim
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1. A method for producing a display device which comprises forming an array of display electrodes on a surface of a first panel;

  • forming an array of colored filter elements on either side of said first panel in register with said array of display electrodes;

    forming a counter electrode on a second panel;

    disposing the first and second panels spaced apart from one another with the display electrodes facing the counter electrode; and

    confining display material between the spaced first and second panels;

    wherein at least one of said panels and the electrode or electrodes on said panel is transparent and wherein said colored filter elements are formed by;

    (A) providing a colored photosensitive element which comprises, in order;

    (i) a substrate having a release surface; and

    (ii) a photosensitive layer on said release surface, which photosensitive layer comprises a light sensitive component selected from the group consisting of negative working, polymeric diazonium compounds, positive working quinone diazide compounds; and

    photopolymerizable compositions; and

    a resinous binder composition, which composition contains a major amount of at least one resin selected from the the group consisting of a polyvinyl butyral polymer, a polyvinyl alcohol/vinyl acetate/vinyl acetal terpolymer and a styrene-maleic anhydride copolymer half ester; and

    at least one colorant; and

    (iii) an adhesive layer directly adhered to said colored photosensitive layer, which adhesive layer comprises a polyvinyl acetate polymer or vinyl acetate containing copolymer and which adhesive layer has a softening point in the range of from about 60°

    C. to about 180°

    C.; and

    (B) either(i) laminating said element with heat and pressure via said adhesive layer to one side of said first panel and removing said substrate by the application of peeling forces; and

    imagewise exposing said photosensitive layer to actinic radiation;

    or(ii) imagewise exposing said photosensitive layer to actinic radiation; and

    laminating said element with heat and pressure via said adhesive layer to one side of first panel; and

    removing said substrate by the application of peeling forces;

    or(iii) laminating said element with heat and pressure via said adhesive layer to one side of said first panel; and

    imagewise exposing said photosensitive layer to actinic radiation; and

    removing said substrate by the application of peeling forces; and

    then(C) removing the non-image areas of said photosensitive layer with a liquid developer, which removing is conducted at a temperature at which said adhesive layers are substantially non-tacky; and

    thereafter(D) optionally repeating steps A through C at least once whereby another photosensitive element having at least one different colorant is laminated onto one side of said first panel over the non-removed portions of the previously laminated photosensitive layer or layers.

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