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US 12,396,319 B2Granted
Organic light-emitting device, light-emitting substrate and light-emitting apparatus
AssigneeBoe Technology Group Co., Ltd.
InventorsRongrong Gao, Lei Chen
Life of this patent
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Abstract
An organic light-emitting device includes: an anode, an emitting layer, and a cathode that are stacked; a first functional material layer located between the emitting layer and the anode; and a second functional material layer located between the emitting layer and the cathode. Under a same test condition, a hole mobility of a material of the first functional material layer is at least ten times an electron mobility of a material of the second functional material layer.
Claims20
An organic light-emitting device, comprising:
- an anode, an emitting layer and a cathode that are stacked;
- a first functional material layer located between the emitting layer and the anode;
- and
- a second functional material layer located between the emitting layer and the cathode;
- and
- under a same test condition, a hole mobility of a material of the first functional material layer being at least ten times an electron mobility of a material of the second functional material layer;
- wherein the second functional material layer includes an electron transport layer and a hole blocking layer;
- an electron mobility of a material of the electron transport layer is the same as an electron mobility of a material of the hole blocking layer;
- or, under a same test condition, the electron mobility of the material of the hole blocking layer is less than the electron mobility of the material of the electron transport layer;
- and
- the material of the electron transport layer and the material of the hole blocking layer are each independently selected from compounds containing at least one heteroaryl which contains at least two N atoms.
8 more elements
An organic light-emitting device, comprising:
- an anode, an emitting layer and a cathode that are stacked;
- a first functional material layer located between the emitting layer and the anode;
- and
- a second functional material layer located between the emitting layer and the cathode;
- and
- under a same test condition, a hole mobility of a material of the first functional material layer being at least ten times an electron mobility of a material of the second functional material layer;
- wherein the second functional material layer includes an electron transport layer and a hole blocking layer;
- an electron mobility of a material of the electron transport layer is the same as an electron mobility of a material of the hole blocking layer;
- or, under a same test condition, the electron mobility of the material of the hole blocking layer is less than the electron mobility of the material of the electron transport layer;
- and
- a lowest triplet energy of the material of the electron transport layer is greater than a lowest triplet energy of the material of the hole blocking layer.
8 more elements
An organic light-emitting device, comprising:
- an anode, an emitting layer and a cathode that are stacked;
- a first functional material layer located between the emitting layer and the anode;
- and
- a second functional material layer located between the emitting layer and the cathode;
- and
- under a same test condition, a hole mobility of a material of the first functional material layer being at least ten times an electron mobility of a material of the second functional material layer;
- wherein the first functional material layer includes a hole transport layer and an electron blocking layer;
- a hole mobility of a material of the hole transport layer is the same as a hole mobility of a material of the electron blocking layer;
- or, under a same test condition, the hole mobility of the material of the electron blocking layer is not less than one tenth of the hole mobility of the material of the hole transport layer;
- and
- a lowest triplet energy of the hole transport layer is greater than a lowest triplet energy of the electron blocking layer.
8 more elements
Dependencies are inferred from the claim text.