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Display panel and manufacturing method thereof

A technology for a display panel and a manufacturing method, which is applied in the manufacture of semiconductor/solid-state devices, electrical components, and electrical solid-state devices, etc., can solve problems such as the energy level mismatch between the cathode layer and the light-emitting layer, and achieve the improvement of energy level barrier and quality. , the effect of improving the luminous efficiency

Active Publication Date: 2019-08-02
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present application provides a display panel and its manufacturing method to improve the technical problem of mismatching energy levels between the existing cathode layer and the light-emitting layer

Method used

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  • Display panel and manufacturing method thereof
  • Display panel and manufacturing method thereof
  • Display panel and manufacturing method thereof

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Embodiment Construction

[0048] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments that the present application can be used to implement. The directional terms mentioned in this application, such as [top], [bottom], [front], [back], [left], [right], [inside], [outside], [side], etc., are for reference only The orientation of the attached schema. Therefore, the directional terms used are used to illustrate and understand the application, but not to limit the application. In the figures, structurally similar elements are denoted by the same reference numerals.

[0049] see figure 1 , figure 1 It is a step diagram of the manufacturing method of the display panel 100 of the present application.

[0050] see Figure 2A-2F , Figure 2A-2F It is a diagram of the process steps of the manufacturing method of the display panel 100 of the present application.

[0051] The manufacturing method of the display panel 100 includes:

[00...

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Abstract

The invention provides a display panel and a manufacturing method thereof. The display panel comprises a substrate, a luminescent device layer positioned on the substrate and a packaging layer positioned on the luminescent device layer; and the luminescent device layer comprises an anode light, a luminescent layer positioned on the anode layer, a cathode layer positioned on the luminescent layer,and a cathode modification layer positioned between the luminescent layer and the cathode layer. The cathode modification layer is additionally arranged between the luminescent layer and the cathode layer, and can overcome an energy level barrier caused by energy level mismatch of a high work content cathode and solve the technical problems of electron injection and carrier transmission balance ina device, the light emitting efficiency of the luminescent device is improved, and the product quality is improved.

Description

technical field [0001] The present application relates to the display field, in particular to a display panel and a manufacturing method thereof. Background technique [0002] Organic light-emitting diode (Organic Light-Emitting Diode, OLED) display has many advantages such as thin and light, active light emission, fast response speed, large viewing angle, wide color gamut, high brightness and low power consumption, and has gradually become the third largest display after liquid crystal display. generation display technology. [0003] Existing OLED devices generally use low work function metals (such as Mg, Ca, Li, Cs) as electrodes. The chemical activity of low work function metals is high, which makes the device performance easy to deteriorate, and also increases the time required for mass production of OLED devices. process control difficulty. When a metal with a high work function (Ag, Au, etc.) is used as an electrode, the metal with a high work function can improve t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/52H01L51/56H01L27/32
CPCH10K59/12H10K50/824H10K71/00
Inventor 史婷
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD