Light-emitting device and display device

A technology for light-emitting devices and light-emitting layers, which is applied in the manufacture of electric solid-state devices, semiconductor devices, and semiconductor/solid-state devices, etc., can solve the problems of high driving voltage, short service life, and low luminous efficiency of light-emitting devices, and achieves the reduction of driving voltage, The effect of improving the injection capacity and prolonging the service life

Pending Publication Date: 2022-02-11
YUNGU GUAN TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The inventors have found that there are at least the following problems in the prior art: the driving voltage of the light-emitting device in the related art is relatively high, resulting in low luminous efficiency and short service life of the light-emitting device

Method used

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  • Light-emitting device and display device
  • Light-emitting device and display device
  • Light-emitting device and display device

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Embodiment Construction

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, various implementation modes of the present invention will be described in detail below in conjunction with the accompanying drawings. However, those of ordinary skill in the art can understand that, in each implementation manner of the present invention, many technical details are provided for readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in this application can also be realized.

[0021] The inventors found that, due to poor conductivity and carrier trapping of the guest luminescent material in the luminescent layer in the related art, the driving voltage of the luminescent device is high, the luminous efficiency of the luminescent device is low, and the service life is short.

[0022...

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Abstract

The embodiment of the invention relates to the technical field of display, and discloses a light-emitting device and a display device. The light-emitting device comprises a first electrode and a second electrode which are oppositely arranged, and alight-emitting layer, wherein the light-emitting layer is arranged between the first electrode and the second electrode, and the light-emitting layer comprises a first surface facing the first electrode and a second surface facing the second electrode; the light-emitting layer comprises a first host material, a first guest material and a second guest material; in the direction from the first electrode to the second electrode, the doping concentration of the first object material in the light-emitting layer is gradually reduced, and the doping concentration of the second object material in the light-emitting layer is gradually increased. According to the light-emitting device and the display device, the driving voltage of the light-emitting device can be reduced, the light-emitting efficiency of the light-emitting device is improved, and the service life of the light-emitting device is prolonged.

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 device. Background technique [0002] With the development of display technology, organic light emitting diode (Organic Light Emitting Diode, OLED) display panel gradually entered the market, compared with traditional thin film transistor liquid crystal display panel (Thin FilmTransistorLiquid Crystal Display, TFT LCD), OLED display panel has energy consumption Low, self-luminous, wide viewing angle, fast response, and easy to apply to flexible display technology and other advantages. In the related art, the light-emitting device in the OLED display panel usually adopts the method of doping the guest light-emitting material into the host material to form the light-emitting layer. [0003] The inventors have found at least the following problems in the prior art: the driving voltage of the light-emitting device in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L27/32
CPCH10K59/10H10K50/11H10K2101/40H10K50/12
Inventor 胡小叙张丽蔡明瀚赵鑫栋
Owner YUNGU GUAN TECH CO LTD
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