Color conversion film using polymeric dye, and multicolor light-emitting organic EL device using same
AssigneeSharp Kabushiki Kaisha
InventorsMasaru Nagai, Chong Li
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Abstract
The present invention provides a color conversion film that can maintain sufficient conversion light intensity without increasing the thickness thereof, and a multicolor light-emitting organic EL device that uses such a film. The color conversion film of the invention includes a polymeric dye material that has a weight-average molecular weight of at least 1,000 but not more than 100,000 and that is composed of a first dye unit and a second dye unit. The first dye unit absorbs light incident on the color conversion film and transfers energy of the absorbed incident light to the second dye unit. The second dye unit receives the energy from the first dye unit and emits light.
Claims15
A color conversion film, comprising:
- a polymeric dye material that has a weight-average molecular weight of at least 1,000 but not more than 100,000 and that is composed of a first dye unit and a second dye unit,
- wherein the first dye unit absorbs light incident on the color conversion film and transfers energy of the absorbed incident light to the second dye unit, and
- wherein the second dye unit receives the energy from the first dye unit and emits light.
Dependencies are inferred from the claim text.