US 2021/0242428 A1 · ORGANIC ELECTROLUMINESCENCE ELEMENT, DISPLAY DEVICE, AND ELECTRONIC APPARATUS

Abstract

An organic electroluminescence device including: at least a first pixel and a blue pixel apposed on a substrate, in which the first pixel and the blue pixel each have an anode and a cathode, and the first pixel and the blue pixel have a first emitting layer and a blue emitting layer, respectively; a hole transporting zone provided between the first emitting layer and the anode and between the blue emitting layer and the anode; and an electron transporting zone provided between the first emitting layer and the cathode and between the blue emitting layer and the cathode, in which the first emitting layer includes a delayed fluorescent second compound and a fluorescent first compound capable of emitting light ranging from 500 nm to 660 nm, and the electron transporting zone includes: a first common layer; and an additional layer provided between the first emitting layer and the cathode.

Claims28

Dependent claims

An organic electroluminescence device comprising:

a first pixel and a blue pixel apposed on a substrate, wherein
the first pixel and the blue pixel each comprise an anode and a cathode,
the first pixel comprises a first emitting layer between the anode and the cathode, and
the blue pixel comprises a blue emitting layer between the anode and the cathode;
a hole transporting zone interposed between the first emitting layer and the anode and between the blue emitting layer and the anode;
and
an electron transporting zone interposed between the first emitting layer and the cathode and between the blue emitting layer and the cathode, wherein
the first emitting layer comprises a delayed fluorescent second compound, and a fluorescent first compound capable of emitting light in a range from 500 nm to 660 nm, and
the electron transporting zone comprises:
a first common layer provided in common in the first pixel and the blue pixel;
and an additional layer interposed between the first emitting layer and the cathode in the first pixel.

8 more elements

An organic electroluminescence device comprising:

a red pixel, a green pixel, and a blue pixel apposed on a substrate, wherein
the red pixel, the green pixel, and the blue pixel each comprise an anode and a cathode,
the red pixel comprises a red emitting layer between the anode and the cathode,
the green pixel comprises a green emitting layer between the anode and the cathode, and
the blue pixel comprises a blue emitting layer between the anode and the cathode;
a hole transporting zone between the red emitting layer and the anode, between the green emitting layer and the anode, and between the blue emitting layer and the anode;
and
an electron transporting zone between the red emitting layer and the cathode, between the green emitting layer and the cathode, and between the blue emitting layer and the cathode, wherein
the red emitting layer comprises a delayed fluorescent second compound and a red fluorescent first compound, and
the electron transporting zone comprises:
a first common layer provided in common in the red pixel, the green pixel, and the blue pixel;
and an additional layer interposed between the red emitting layer and the cathode in the red pixel.

9 more elements

Dependencies are inferred from the claim text.

Organic electroluminescence element, display device, and electronic apparatus

Life of this patent

Organic electroluminescence element, display device, and electronic apparatus

Life of this patent

Abstract

Claims28