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US 12,575,321 B2Granted
Light-emitting layer, light-emitting device and light-emitting apparatus
AssigneeHubei Yangtze Industrial Innovation Center Of Advanced Display Co., Ltd.
InventorsWanming Hua, Jinghua Niu, Yafei Lin, Jianyun Wang, Shaoli Zhang
Life of this patent
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Abstract
A light-emitting layer, a light-emitting device and a light-emitting apparatus are provided. The light-emitting layer includes a thermally activated delayed fluorescence (TADF) material, a phosphorescent material, a multiple resonance fluorescent material and a host material.
Claims19
A light-emitting layer, comprising:
- a thermally activated delayed fluorescence (TADF) material, a phosphorescent material, a multiple resonance fluorescent material and a host material, wherein:
- a difference between HOMO energy levels of the host material and the TADF material is less than 0.1 eV, and a difference between LUMO energy levels of the host material and the TADF material is less than 0.1 eV;
- a difference between HOMO energy levels of the TADF material and the phosphorescent material is less than 0.1 eV, and a difference between LUMO energy levels of the TADF material and the phosphorescent material is less than 0.1 eV;
- and
- a difference between HOMO energy levels of the phosphorescent material and the multiple resonance fluorescent material is less than 0.1 eV, and a difference between LUMO energy levels of the phosphorescent material and the multiple resonance fluorescent material is less than 0.1 eV.
2 more elements
A light-emitting device, comprising:
- a light-emitting layer, wherein the light-emitting layer includes a TADF material, a phosphorescent material, a multiple resonance fluorescent material and a host material, wherein:
- a difference between HOMO energy levels of the host material and the TADF material is less than 0.1 eV, and a difference between LUMO energy levels of the host material and the TADF material is less than 0.1 eV;
- a difference between HOMO energy levels of the TADF material and the phosphorescent material is less than 0.1 eV, and a difference between LUMO energy levels of the TADF material and the phosphorescent material is less than 0.1 eV;
- and
- a difference between HOMO energy levels of the phosphorescent material and the multiple resonance fluorescent material is less than 0.1 eV, and a difference between LUMO energy levels of the phosphorescent material and the multiple resonance fluorescent material is less than 0.1 eV.
2 more elements
A light-emitting apparatus, comprising:
- a light-emitting device, wherein the light emitting device includes a light-emitting layer, the light-emitting layer including a TADF material, a phosphorescent material, a multiple resonance fluorescent material and a host material, wherein:
- a difference between HOMO energy levels of the host material and the TADF material is less than 0.1 eV, and a difference between LUMO energy levels of the host material and the TADF material is less than 0.1 eV;
- a difference between HOMO energy levels of the TADF material and the phosphorescent material is less than 0.1 eV, and a difference between LUMO energy levels of the TADF material and the phosphorescent material is less than 0.1 eV;
- and
- a difference between HOMO energy levels of the phosphorescent material and the multiple resonance fluorescent material is less than 0.1 eV, and a difference between LUMO energy levels of the phosphorescent material and the multiple resonance fluorescent material is less than 0.1 eV.
2 more elements
Dependencies are inferred from the claim text.