Organic EL display device and method of manufacturing the same

1. An organic EL display device comprising:

a pixel electrode;

a first light emission layer which includes a first dopant material having a first absorbance peak in absorbance spectrum characteristics in an optical quenching state and a first host material having a second absorbance peak on a shorter wavelength side than the first absorbance peak, the first light emission layer being disposed above the pixel electrode;

a second light emission layer which includes a second dopant material having a third absorbance peak in absorbance spectrum characteristics and a second host material having a fourth absorbance peak on a shorter wavelength side than the first absorbance peak and than the third absorbance peak, the second light emission layer being disposed above the first light emission layer;

a third light emission layer which includes a third dopant material and a third host material, the third light emission layer being disposed above the second light emission layer; and

a counter-electrode which is disposed above the third light emission layer,

wherein the first host material and the second host material have an absorbance of 10% or less at wavelengths of 350 nm or more in normalized absorbance spectrum characteristics thereof.

2. An organic EL display device comprising:

a pixel electrode;

a first light emission layer which includes a first dopant material having a first absorbance peak in absorbance spectrum characteristics in an optical quenching state and a first host material having a second absorbance peak on a shorter wavelength side than the first absorbance peak, the first light emission layer being disposed above the pixel electrode;

a second light emission layer which includes a second dopant material having a third absorbance peak in absorbance spectrum characteristics in an optical quenching state and a second host material having a fourth absorbance peak on a shorter wavelength side than the first absorbance peak and than the third absorbance peak, the second light emission layer being disposed above the first light emission layer;

a third light emission layer which includes a third dopant material and a third host material, the third light emission layer being disposed above the second light emission layer; and

a counter-electrode which is disposed above the third light emission layer.

3. The organic EL display device according to claim 2 , wherein the first host material and the second host material have an absorbance of 10% or less at wavelengths of 350 nm or more in normalized absorbance spectrum characteristics thereof.

4. The organic EL display device according to claim 2 , wherein at least one of the first dopant material, the second dopant material and the third dopant material is a phosphorescent material.

5. An organic EL display device comprising:

a pixel electrode;

a first light emission layer which includes a first dopant material having a first absorbance peak in an optical quenching state and a first host material having a first absorbance bottom, at which a normalized absorbance in normalized absorbance spectrum characteristics is 10% or less, on a shorter wavelength side than the first absorbance peak, the first light emission layer being disposed above the pixel electrode;

a second light emission layer which includes a second dopant material having a second absorbance peak and a second host material having a second absorbance bottom, at which a normalized absorbance in normalized absorbance spectrum characteristics is 10% or less, on a shorter wavelength side than the first absorbance peak and the second absorbance peak, the second light emission layer being disposed above the first light emission layer;

a third light emission layer which includes a third dopant material and a third host material, the third light emission layer being disposed above the second light emission layer; and

a counter-electrode which is disposed above the third light emission layer.

6. The organic EL display device according to claim 5 , wherein at least one of the first dopant material, the second dopant material and the third dopant material is a phosphorescent material.

7. An organic EL display device comprising:

a pixel electrode;

a first light emission layer which includes a first dopant material having a first absorbance peak in an optical quenching state and a first host material having a first absorbance bottom, at which a normalized absorbance in normalized absorbance spectrum characteristics is 10% or less, on a shorter wavelength side than the first absorbance peak, the first light emission layer being disposed above the pixel electrode;

a second light emission layer which includes a second dopant material having a second absorbance peak in an optical quenching state and a second host material having a second absorbance bottom, at which a normalized absorbance in normalized absorbance spectrum characteristics is 10% or less, on a shorter wavelength side than the first absorbance peak and the second absorbance peak, the second light emission layer being disposed above the first light emission layer;

a third light emission layer which includes a third dopant material and a third host material, the third light emission layer being disposed above the second light emission layer; and

a counter-electrode which is disposed above the third light emission layer.

8. The organic EL display device according to claim 7 , wherein at least one of the first dopant material, the second dopant material and the third dopant material is a phosphorescent material.