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Light emitting device and display panel

A light-emitting device and light-emitting layer technology, which is applied in semiconductor devices, electric solid-state devices, semiconductor/solid-state device manufacturing, etc., can solve the problems of OLED display panel gray scale brightness jump, affecting customer use effect, and unstable luminous efficiency. To achieve the effect of improving the regularity of changes, enhancing the user experience, and improving the efficiency roll-off

Pending Publication Date: 2020-10-02
KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] At present, the luminous efficiency of Organic Light-Emitting Diode (OLED) is unstable, which leads to the phenomenon of gray-scale brightness jumps in the display process of OLED display panels, which affects the use effect of customers.

Method used

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  • Light emitting device and display panel
  • Light emitting device and display panel
  • Light emitting device and display panel

Examples

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Embodiment Construction

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0030] figure 1 It is a schematic diagram of curves of luminous brightness and luminous efficiency of an existing light-emitting device. Such as figure 1 As shown, the abscissa is the luminous brightness, and the ordinate is the luminous efficiency. Curve 01 is a schematic diagram of the relationship between luminous brightness and luminous efficiency of an existing light emitting device. According to the curve 01, it can be seen that the luminous efficiency of the light emitting device is different when the lu...

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Abstract

The invention discloses a light emitting device and a display panel. The light emitting device comprises a first electrode, a functional layer and a second electrode which are arranged in a stacked mode, wherein the functional layer comprises a first light emitting layer; the functional layer further comprises at least one film layer of a second light emitting layer and an efficiency balance layer; at least one of the first light emitting layer, the second light emitting layer, and the efficiency balance layer includes a carrier rate balance material. The transmission rate of carriers in the light emitting layer is adjusted through the carrier rate balance material; the difference value of the transmission rates of the carriers in the light emitting layer is reduced, so that accumulation of the carriers in the light emitting layer can be reduced, exciton quenching in the light emitting layer is reduced, the efficiency roll-off of the light emitting device can be improved, and the change regularity of a curve of the light emitting brightness and the light emitting efficiency of the light emitting device can be improved. When the display panel is used for displaying, the phenomenon that the gray scale brightness jumps when the display panel displays different gray scale brightness can be reduced, and the use experience of a user is improved.

Description

technical field [0001] Embodiments of the present invention relate to the field of display technology, and in particular, to a light emitting device and a display panel. Background technique [0002] At present, the luminous efficiency of Organic Light-Emitting Diode (OLED) is unstable, which leads to the phenomenon of gray-scale brightness jumps in the display process of OLED display panels, which affects the use effect of customers. Contents of the invention [0003] The invention provides a light-emitting device and a display panel to improve the balance of the luminous efficiency of the light-emitting device and improve the gray scale brightness jump phenomenon of the display panel. [0004] In a first aspect, an embodiment of the present invention provides a light-emitting device, including a first electrode, a functional layer, and a second electrode arranged in a stack; the functional layer includes a first light-emitting layer; [0005] The functional layer also i...

Claims

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Application Information

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IPC IPC(8): H01L51/50H01L27/32
CPCH10K59/00H10K50/11
Inventor 李贵芳
Owner KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD
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