Display panels
AssigneeWuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
InventorHaoran WANG
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Abstract
Embodiments of the present disclosure provide a display panel, in which a hole control layer is disposed on a hole transport layer, a light-emitting material layer is disposed on the hole control layer, and the hole control layer includes a first sub-hole control layer and a second sub-hole control layer. An energy difference between a HOMO energy level of the first sub-hole control layer and a HOMO energy level of the second sub-hole control layer is greater than or equal to 0.2 eV, and the HOMO energy level of the second sub-hole control layer is greater than a HOMO energy level of the light-emitting material layer and less than a HOMO energy level of the hole transport layer.
Claims20
A display panel, comprising:
- a first electrode;
- a hole transport layer disposed on the first electrode;
- a hole control layer disposed on the hole transport layer;
- a light-emitting material layer disposed on the hole control layer;
- and
- a second electrode disposed on the light-emitting material layer;
- wherein the hole control layer comprises a first sub-hole control layer and a second sub-hole control layer, a thickness of the first sub-hole control layer is less than a thickness of the second sub-hole control layer, an energy difference between a HOMO energy level of the first sub-hole control layer and a HOMO energy level of the second sub-hole control layer is greater than or equal to 0.2 eV, and
- the HOMO energy level of the second sub-hole control layer is greater than a HOMO energy level of the light-emitting material layer and less than a HOMO energy level of the hole transport layer.
A display panel, comprising:
- a first electrode;
- a hole transport layer disposed on the first electrode;
- a hole control layer disposed on the hole transport layer;
- a light-emitting material layer disposed on the hole control layer;
- and
- a second electrode disposed on the light-emitting material layer;
- wherein the hole control layer comprises a first sub-hole control layer and a second sub-hole control layer, a thickness of the first sub-hole control layer is less than a thickness of the second sub-hole control layer, an energy difference between a HOMO energy level of the first sub-hole control layer and a HOMO energy level of the second sub-hole control layer is greater than or equal to 0.2 eV, and the HOMO energy level of the second sub-hole control layer is greater than a HOMO energy level of the light-emitting material layer and less than a HOMO energy level of the hole transport layer;
- a LUMO energy level of the second sub-hole control layer is greater than a LUMO energy level of the light-emitting material layer and less than a LUMO energy level of the hole transport layer, and an energy difference between the LUMO energy level of the second sub-hole control layer and the LUMO energy level of the light-emitting material layer is greater than or equal to 0.2 eV;
- and
- a hole mobility of the first sub-hole control layer is less than a hole mobility of the second sub-hole control layer.
Dependencies are inferred from the claim text.