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    • 8. 发明专利
    • DE60328482D1
    • 2009-09-03
    • DE60328482
    • 2003-05-15
    • DU PONT
    • ANDREWS GERALD DCASPAR JONATHAN V
    • G03F7/34B41M5/26B41M5/382B41M5/385B41M5/395B41M5/42B41M5/44B41M5/46B41M7/00G02B5/20G02F1/1335
    • A process for making a radiation filter element comprises the steps of: exposing part of an assemblage to infrared radiation, the assemblage comprising a donor comprising (1) a support capable of transmitting infrared light, and (2) a transferable layer comprising a transferable material and an infrared-absorbing dye, the transferable layer of the donor being in contact with a receiver to provide an exposed assemblage comprising an exposed part of the transferable layer and an unexposed part of the transferable layer; separating the receiver and the support of the exposed assemblage to obtain an imaged receiver and a spent donor, wherein the imaged receiver comprises the receiver, a transferred portion of the transferable material and a transferred portion of the infrared-absorbing dye, said transferred portion of the IR dye having a color and the spent donor comprises the support and a retained portion of the transferable layer; and heating the transferred portion of the transferable material and the transferred portion of the infrared-absorbing dye at a temperature ranging from about 100 degrees Celsius to about 350 degrees Celsius for a period of time sufficient to thermally decolorize 50% to 100% of the transferred portion of the infrared-absorbing dye, the heating being in the absence of a thermal bleaching agent to provide a radiation filter element suitable for use in a liquid crystal display. Preferably color filter elements of this invention are used in liquid crystal display devices.