Organic electroluminescent element, organic electroluminescent panel, organic electroluminescent device and electronic apparatus
Disclosed is an organic electroluminescent element including a first electrode, a hole transport layer, a light emitting layer, an electron transport layer and a second electrode in this order. The light emitting layer has a first light emitting layer including a coating film on the hole transport layer side, and has a second light emitting layer including a vapor-deposited film on the electron transport layer side.
1. An organic electroluminescent panel, comprising:
a plurality of pixels, wherein
each pixel of the plurality of pixels has a plurality of sub-pixels,
each sub-pixel of the plurality of sub-pixels has an organic electroluminescent element,
the organic electroluminescent element comprises:
a first electrode;
a hole transport layer;
a first light emitting layer that comprises:
a second light emitting layer, and
a third light emitting layer;
an electron transport layer; and
a second electrode, wherein
the first light emitting layer is a hybrid of the second light emitting layer on the third light emitting layer,
the second light emitting layer is a first coating film on a hole transport layer side of the first light emitting layer, and
the third light emitting layer is a first vapor-deposited film on an electron transport layer side of the first light emitting layer
the plurality of sub-pixels includes a first sub-pixel adapted to emit red light, a second sub-pixel adapted to emit green light, and a third sub-pixel adapted to emit blue light,
the third sub-pixel includes the first light emitting layer,
each of the first sub-pixel and the second sub-pixel have a fourth light emitting layer including a third coating film, and
the third light emitting layer is over whole surface of the fourth light emitting layer.
2. The organic electroluminescent panel according to claim 1 ,
wherein each of the second light emitting layer and the third light emitting layer contains a common host material and a common dopant material.
3. The organic electroluminescent panel according to claim 1 ,
wherein the second light emitting layer does not contain a dopant material but contains a host material which is common to the second light emitting layer and the third light emitting layer.
4. The organic electroluminescent panel according to claim 1 , wherein
the hole transport layer is a second coating film, and
the second coating film is subjected to an insolubilizing treatment.
5. The organic electroluminescent panel according to claim 1 , wherein
the hole transport layer is a second coating film, and
the electron transport layer is second vapor-deposited film.
6. An organic electroluminescent panel, comprising:
a plurality of pixels, wherein
each pixel of the plurality of pixels has a plurality of sub-pixels,
each sub-pixel of the plurality of sub-pixels has an organic electroluminescent element,
the organic electroluminescent element comprises:
a first electrode;
a hole transport layer;
a first light emitting layer that comprises:
a second light emitting layer; and
a third light emitting layer;
an electron transport layer; and
a second electrode;
the first light emitting layer is a hybrid of the second light emitting layer on the third light emitting layer,
the second light emitting layer is a first coating film on a hole transport layer side of the first light emitting layer,
the third light emitting layer is a first vapor-deposited film on an electron transport layer side of the first light emitting layer,
the plurality of sub-pixels includes a first sub-pixel adapted to emit red light, a second sub-pixel adapted to emit green light, and a third sub-pixel adapted to emit blue light,
the third sub-pixel includes the first light emitting layer,
each of the first sub-pixel and the second sub-pixel have a fourth light emitting layer including a third coating film and a hole blocking layer,
the hole blocking layer includes a low-molecular-weight material, and
the third light emitting layer is over a surface of the hole blocking layer.
7. An organic electroluminescent device, comprising:
an organic electroluminescent panel having a plurality of pixels; and
a driving section adapted to drive the plurality of pixels, wherein
each pixel of the plurality of pixels have a plurality of sub-pixels,
each sub-pixel of the plurality of sub-pixels have an organic electroluminescent element,
the organic electroluminescent element comprises:
a first electrode;
a hole transport layer;
a first light emitting layer that comprises:
a second light emitting layer; and
a third light emitting layer;
an electron transport layer; and
a second electrode;
the first light emitting layer is a hybrid of the second light emitting layer on the third light emitting layer,
the second light emitting layer is a first coating film on a hole transport layer side of the first light emitting layer,
the third light emitting layer is a first vapor-deposited film on an electron transport layer side of the first light emitting layer,
the plurality of sub-pixels includes a first sub-pixel adapted to emit red light, a second sub-pixel adapted to emit green light, and a third sub-pixel adapted to emit blue light,
the third sub-pixel includes the first light emitting layer,
each of the first sub-pixel and the second sub-pixel have a fourth light emitting layer including a third coating film, and
the third light emitting layer is over whole surface of the fourth light emitting layer.
8. An electronic apparatus, comprising:
an organic electroluminescent device, including:
an organic electroluminescent panel having a plurality of pixels; and
a driving section adapted to drive the plurality of pixels, wherein
each pixel of the plurality of pixels has a plurality of sub-pixels,
each sub-pixel of the plurality of sub-pixels has an organic electroluminescent element,
the organic electroluminescent element comprises:
a first electrode;
a hole transport layer;
a first light emitting layer that comprises:
a second light emitting layer; and
a third light emitting layer;
an electron transport layer; and
a second electrode;
the first light emitting layer is a hybrid of the second light emitting layer on the third light emitting layer,
the second light emitting layer is a first coating film on a hole transport layer side of the first light emitting layer,
the third light emitting layer is a first vapor-deposited film on an electron transport layer side of the first light emitting layer,
the plurality of sub-pixels includes a first sub-pixel adapted to emit red light, a second sub-pixel adapted to emit green light, and a third sub-pixel adapted to emit blue light,
the third sub-pixel includes the first light emitting layer,
each of the first sub-pixel and the second sub-pixel have a fourth light emitting layer including a third coating film, and
the third light emitting layer is over whole surface of the fourth light emitting layer.