Display panel and display device
AssigneeWuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
InventorsMunjae Lee, Yu Gu, Juewen Zhao, Kailong Wu, Zhao Li, Junyuan Wang
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Abstract
The present application provides a display panel and a display device. A light-emitting device layer includes an n-type charge generation layer and a p-type charge generation layer. The light-emitting device layer has a first operating voltage to operate at a preset current density, and has a second operating voltage after operating at the preset current density and a first preset temperature for a preset time. The absolute value of a difference value between the first operating voltage and the second operating voltage is a1, a1 is less than or equal to 1V. The first preset temperature is greater than or equal to 50° C.
Claims20
A display panel, comprising a light-emitting device layer, wherein the light-emitting device layer comprises:
- an anode;
- a first light-emitting layer disposed on a side of the anode;
- an n-type charge generation layer disposed on a side of the first light-emitting layer away from the anode and comprising an electron transport material and an n-type doping material;
- a p-type charge generation layer disposed on a side of the n-type charge generation layer away from the first light-emitting layer and comprising a hole transport material and a p-type doping material;
- a second light-emitting layer disposed on a side of the p-type charge generation layer away from the n-type charge generation layer;
- and
- a cathode disposed on a side of the second light-emitting layer away from the p-type charge generation layer;
- wherein the light-emitting device layer has a first operating voltage to operate at a preset current density, and has a second operating voltage after operating at the preset current density and a first preset temperature for a preset time;
- the absolute value of a difference value between the first operating voltage and the second operating voltage is a1, and a1 is less than or equal to 1V;
- and the first preset temperature is greater than or equal to 50° C.
A display device, comprising a display panel, the display panel comprising a light-emitting device layer, wherein the light-emitting device layer comprises:
- an anode;
- a first light-emitting layer disposed on a side of the anode;
- an n-type charge generation layer disposed on a side of the first light-emitting layer away from the anode and comprising an electron transport material and an n-type doping material;
- a p-type charge generation layer disposed on a side of the n-type charge generation layer away from the first light-emitting layer and comprising a hole transport material and a p-type doping material;
- a second light-emitting layer disposed on a side of the p-type charge generation layer away from the n-type charge generation layer;
- and
- a cathode disposed on a side of the second light-emitting layer away from the p-type charge generation layer;
- wherein the light-emitting device layer has a first operating voltage to operate at a preset current density, and has a second operating voltage after operating at the preset current density and a first preset temperature for a preset time;
- the absolute value of a difference value between the first operating voltage and the second operating voltage is a1, and a1 is less than or equal to 1V;
- and the first preset temperature is greater than or equal to 50° C.
Dependencies are inferred from the claim text.