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Preparation method of OLED display panel and OLED display panel

A technology for display panels and substrates, which is applied in the manufacture of semiconductor/solid-state devices, electrical components, and electric solid-state devices, etc., can solve the problems of difficult control of precision and high difficulty in the manufacturing process of auxiliary electrodes, and achieves reduction of surface resistance and improvement of in-plane resistance. The effect of brightness uniformity

Pending Publication Date: 2021-04-20
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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Problems solved by technology

[0004] An embodiment of the present invention provides a method for preparing an OLED display panel, which is used to solve the technical problems of the OLED display panel in the prior art, which are difficult to manufacture and whose precision is difficult to control.

Method used

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  • Preparation method of OLED display panel and OLED display panel
  • Preparation method of OLED display panel and OLED display panel
  • Preparation method of OLED display panel and OLED display panel

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Embodiment Construction

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. In the drawings, for clarity and ease of understanding and description, the size and thickness of the components shown in the drawings are not in scale.

[0021] Such as figure 1 As shown, it is a flowchart of a method for preparing an OLED display panel provided by an embodiment of the present invention. The OLED display panel includes a plurality of pixels arranged in an array and a spacer between the plurality of pixels. The preparation method includes the following step:

[0022] S101. Provide a base substrate;

[0023] S102, preparing a thin film transistor layer on the base substrate;

[0024] S103, preparing a light-emitting functional layer on the thin film transistor layer;

[0025] S104. Prepare an organic material layer on the light-emitting functional layer, and ...

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Abstract

The invention provides a preparation method of an OLED display panel and the OLED display panel. The OLED display panel comprises a plurality of pixels arranged in an array mode and spacing areas located among the pixels, and the preparation method comprises the following steps that an organic material layer is prepared on a light-emitting function layer, wherein the organic material layer and metal repel each other; performing exposure processing on the organic material layer corresponding to the spacing areas to modify the organic material layer to be not exclusive to metal; removing a part of the organic material layer corresponding to the spacing areas to form a plurality of first via holes; and preparing a first metal layer on the organic material layer, wherein the first metal layer is connected with the common electrode layer of a light-emitting function layer through the first via holes. According to the OLED display panel, the first metal layer is connected with the common electrode layer through the plurality of first via holes, so that the surface resistance of the common electrode layer can be reduced, and the in-plane brightness uniformity of the OLED display panel is improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a method for preparing an OLED display panel and the OLED display panel. Background technique [0002] OLED (Organic Light Emitting Display, organic electroluminescence) device has self-illumination, all-solid-state, high luminous efficiency, short response time, high definition and contrast, nearly 180-degree viewing angle, wide operating temperature range, and can realize flexible display and full With many advantages such as color display, it is recognized by the industry as the display device with the most development potential. At present, the large-size top-emitting OLED display panel adopts a common cathode structure, and the cathode adopts a metal with high transmittance or a transparent conductive material, such as ITO, both of which have the problem of high surface resistance, and high surface resistance will cause serious problems. The voltage drop (IR-drop) will lea...

Claims

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Application Information

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IPC IPC(8): H01L51/56H01L27/32
Inventor 谭伟
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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