Organic electro-luminescence display device
View Patent ↗An organic electro-luminescence (EL) display device according to the present invention includes: a main substrate; a display section provided above the main substrate and including a red light-emitting layer, a green light-emitting layer, a blue light-emitting layer, and a bank; a blue color filter provided above the display section, which selectively transmits blue light and selectively absorbs green light and red light; and a red color filter provided above the display section, which selectively transmits the red light and selectively absorbs the blue light and the green light, wherein the blue color filter has openings each at a position corresponding to the red light-emitting layer or the green light-emitting layer, and the red color filter has openings each at a position corresponding to the green light-emitting layer or the blue light-emitting layer.
1. An organic electro-luminescence (EL) display device comprising:
a main substrate;
a display section provided above the main substrate and including a red organic EL light-emitting region, a non light-emitting region around the red organic EL light-emitting region, a green organic EL light-emitting region, a non light-emitting region around the green organic EL light-emitting region, a blue organic EL light-emitting region, and a non light-emitting region around the blue organic EL light-emitting region;
a first light-adjusting layer provided above the display section, which selectively transmits blue light and selectively absorbs green light and red light;
a second light-adjusting layer provided above the display section, which selectively transmits the red light and selectively absorbs the blue light and the green light; and
a third light-adjusting layer which selectively absorbs light having a wavelength between the red light and the green light,
wherein a light-adjusting layer which selectively transmits the green light and selectively absorbs the red light and the blue light is omitted,
the first light-adjusting layer is continuously formed over positions each corresponding to the blue organic EL light-emitting region, the non light-emitting region around the red organic EL light-emitting region, the non light-emitting region around the green organic EL light-emitting region, or the non light-emitting region around the blue organic EL light-emitting region, and has openings each at a position corresponding to the red organic EL light-emitting region or the green organic EL light-emitting region,
the second light-adjusting layer is continuously formed over positions each corresponding to the red organic EL light-emitting region, the non light-emitting region around the red organic EL light-emitting region, the non light-emitting region around the green organic EL light-emitting region, or the non light-emitting region around the blue organic EL light-emitting region, and has openings each at a position corresponding to the blue organic EL light-emitting region or the green organic EL light-emitting region,
the third light-adjusting layer is provided above the display section, and is substantially uniformly formed over the entirety of the display section, and
in the third light-adjusting layer, a maximum value of a transmission factor of visible light is 80% or higher, and a minimum value of the transmission factor of visible light is 50% or lower, wavelengths indicating a transmission factor of 60% are in ranges from 550 nm to 575 nm and from 585 nm to 620 nm, and a wavelength indicating the minimum value of the transmission factor is in a range from 570 nm to 600 nm.
2. The organic EL display device according to claim 1 ,
wherein a combined transmission factor of the first light-adjusting layer and the second light-adjusting layer formed at positions each corresponding to the non light-emitting region around the red organic EL light-emitting region, the non light-emitting region around the green organic EL light-emitting region, or the non light-emitting region around the blue organic EL light-emitting region is 25% or less in a wavelength range from 500 nm to 630 nm.
3. The organic EL display device according to claim 1 ,
wherein the main substrate includes: a thin film transistor; and a planarizing film formed on the display section-side of the thin film transistor to cover the thin film transistor, and
the organic EL display device further comprises:
an anode provided between the main substrate and the display section; and
a cathode provided on the display section.
4. The organic EL display device according to claim 1 , further comprising
a resin layer which is colored and provided above the display section,
wherein the resin layer functions as the third light-adjusting layer.
5. The organic EL display device according to claim 1 ,
wherein the first light-adjusting layer and the second light-adjusting layer are formed on a sub substrate which is a component different from the main substrate, and
the main substrate and the sub substrate are bonded such that the display section faces the first light-adjusting layer and the second light-adjusting layer.
6. The organic EL display device according to claim 5 ,
wherein the sub substrate is made of colored glass or plastic, and functions as the third light-adjusting layer.