Color-conversion light-emitting device, method for manufacturing the same, and display using the same

1. A color-conversion light-emitting device comprising:

a color-conversion layer for converting a wavelength distribution of light,

a light-emitting unit formed on the color-conversion layer and having a pair of transparent electrodes and an organic EL layer between the pair of the transparent electrodes, and

a color filter layer formed on the light-emitting unit at a side opposite to the color-conversion layer, the light exiting the device at a side of the color filter layer,

wherein the color-conversion layer absorbs light emitted from the light-emitting unit and emits light with a wavelength different from that emitted from the light-emitting unit as fluorescence.

2. A color-conversion light-emitting device according to claim 1 , further comprising a reflective layer formed on the color-conversion layer at a side opposite to the light-emitting unit.

3. A color-conversion light-emitting device according to claim 1 , further comprising a wavelength selection mirror disposed between the light-emitting unit and the color filter layer.

4. A color-conversion light-emitting device according to claim 1 , further comprising a second color-conversion layer disposed between the light-emitting unit and the color filter layer, said second color-conversion layer absorbing the light emitted from the light-emitting unit and emitting light with the wavelength different from that emitted from the light-emitting unit as fluorescence.

5. A color-conversion light-emitting device according to claim 1 , further comprising a substrate contacting one of the color-conversion layer and the color filter layer.

6. A color-conversion light-emitting device according to claim 1 , further comprising a passivation layer disposed between the color-conversion layer and the light-emitting unit.

7. A color-conversion light-emitting device according to claim 1 , further comprising a passivation layer disposed between the color filter layer and the light-emitting unit.

8. A display comprising at least one color-conversion light-emitting device according to claim 1 .

9. A display according to claim 8 , wherein said pair of the transparent electrodes is divided into a plurality of partial electrodes formed in a line pattern, one of said pair of the transparent electrodes crossing the other of the pair of the transparent electrodes with a right angle.

10. A display according to claim 8 , further comprising a plurality of switching elements, one of the pair of the transparent electrodes being formed of a plurality of partial electrodes connected to each of said plurality of the switching elements.

11. A display according to claim 10 , wherein said plurality of the switching elements is TFTs.

12. A display according to claim 8 , further comprising a reflective layer formed on the color-conversion layer at a side opposite to the light-emitting unit.

13. A display according to claim 8 , further comprising a second color-conversion layer disposed between the light-emitting unit and the color filter layer, said second color-conversion layer absorbing the light emitted from the light-emitting unit and emitting light with the wavelength different from that emitted from the light-emitting unit as fluorescence.

14. A color-conversion light-emitting device according to claim 1 , wherein said color-conversion layer is disposed under the light-emitting unit so that a part of light emitted from the light-emitting unit is subjected to wavelength distribution conversion at the color-conversion layer, and converted light passes through the light-emitting unit and the color filter layer and exits the device at the side of the color filter layer.

15. A color-conversion light-emitting device according to claim 1 , wherein said color-conversion layer comprises a matrix resin and a color-conversion colorant, said color-conversion colorant absorbing light ranging from a near ultraviolet region to a visible region emitted from the light emitting unit.