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Display panel, manufacturing method thereof and display device

A display panel and substrate substrate technology, which is applied in semiconductor/solid-state device manufacturing, semiconductor devices, electrical components, etc., can solve the problems of shortening the life of the light-emitting layer and reducing the life of the display panel, so as to increase the difficulty of injection, improve the life, and improve The effect of the ignition voltage

Pending Publication Date: 2021-11-23
BOE TECH GRP CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the direction from the hole transport layer to the light-emitting layer, the highest occupied molecular orbital (Highest Occupied Molecular, HOMO) energy level of multiple buffer layers gradually deepens, so that charges accumulate in the light-emitting layer, shortening the lifetime of the light-emitting layer, thereby Reduced lifespan of the display panel

Method used

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  • Display panel, manufacturing method thereof and display device
  • Display panel, manufacturing method thereof and display device
  • Display panel, manufacturing method thereof and display device

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Embodiment Construction

[0040] In order to make the purpose, technical solution and advantages of the present disclosure clearer, the implementation manners of the present disclosure will be further described in detail below in conjunction with the accompanying drawings.

[0041] figure 1It is a schematic structural diagram of a display panel provided by an embodiment of the present disclosure. The display panel includes a base substrate 10 and a plurality of sub-pixels 20. The plurality of sub-pixels 20 are located on the base substrate 10. The plurality of sub-pixels 20 include red sub-pixels 21, green Subpixel 22 and blue subpixel 23. In other implementation manners, the plurality of sub-pixels 20 may also include white sub-pixels or yellow sub-pixels. A red sub-pixel 21, a green sub-pixel 22 and a blue sub-pixel 23 constitute a pixel; or, a red sub-pixel 21, a green sub-pixel 22, a blue sub-pixel 23, a white sub-pixel and a yellow The sub-pixels collectively constitute a pixel.

[0042] figu...

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Abstract

The invention relates to a display panel, a manufacturing method thereof and a display device, and belongs to the technical field of display. The display panel comprises a substrate and a plurality of sub-pixels located on the substrate, and the plurality of sub-pixels comprise red sub-pixels. The plurality of sub-pixels comprise an anode layer, a hole transport layer, a light-emitting layer and a cathode layer which are stacked on the substrate in sequence; the red sub-pixel further comprises at least two buffer layers, the at least two buffer layers are located between the hole transport layer and the light-emitting layer, in the first direction, the energy levels of the at least two buffer layers are gradually reduced, the energy levels of the at least two buffer layers are both lower than the energy level of the light-emitting layer, and the first direction is the direction from the hole transport layer to the light-emitting layer. The energy levels of the at least two buffer layers are gradually reduced, the charge injection difficulty is increased, charges are prevented from being gathered on the light-emitting layer, the service life of the light-emitting layer is prolonged, and therefore the service life of the display panel is prolonged.

Description

technical field [0001] The present disclosure relates to the field of display technology, and in particular to a display panel, a manufacturing method thereof, and a display device. Background technique [0002] Display panels are an important part of display devices such as mobile phones, tablets and TVs. The display panel includes a plurality of pixels, and each pixel includes a plurality of sub-pixels, such as red sub-pixels, green sub-pixels and blue sub-pixels. Each sub-pixel is controlled to emit light so that the display panel displays images. The turn-on voltage of a sub-pixel indicates the start-up voltage required when the luminous brightness of the sub-pixel is 1 nit. The turn-on voltages of the red sub-pixel, the green sub-pixel and the blue sub-pixel are all different. Start-up voltage is minimum. [0003] In the related art, the light-emitting device in the red sub-pixel includes an anode (Anode) layer, a hole transport layer, multiple buffer layers, a light...

Claims

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Application Information

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IPC IPC(8): H01L51/50H01L51/56H01L27/32
CPCH10K59/00H10K30/865H10K50/11H10K2101/40H10K50/15H10K71/00
Inventor 孙玉倩
Owner BOE TECH GRP CO LTD
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