Display panel and preparation method thereof and display device

A display panel and manufacturing method technology, which is applied in semiconductor/solid-state device manufacturing, electrical components, electric solid-state devices, etc., can solve problems such as the anode cannot receive signals, anode cracks, and the electrical performance of flexible OLED display panels deteriorate, achieving improvement Display performance, effect of preventing anode cracking

Active Publication Date: 2019-02-26
YUNGU GUAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the anode of the existing flexible OLED display panel is prone to cracking, which leads to the deterioration of the electrical performance of the flexible OLED display pan...

Method used

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  • Display panel and preparation method thereof and display device
  • Display panel and preparation method thereof and display device
  • Display panel and preparation method thereof and display device

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Embodiment Construction

[0016] It can be known from the background art that the existing display panel has the problem that the anode is easy to crack, which affects the performance of the display panel.

[0017] The analysis found that in the flexible OLED display panel, the anode is usually a conductive transparent oxide, which has relatively low flexibility. It is used in the reliability test of the flexible OLED display panel or in the normal use of the flexible OLED display panel. As the bending radius decreases and the number of bending increases, the anode of the flexible OLED display panel after bending is prone to cracking, resulting in deterioration of the electrical performance of the flexible OLED display panel and even causing the anode to fail to receive signals.

[0018] In order to solve the above problem, the present invention provides a display panel to improve the anode cracking problem and improve the display performance and reliability of the display panel.

[0019] In order to make the...

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Abstract

The embodiment of the invention discloses a display panel and a preparation method thereof and a display device. The display panel comprises: a planarization layer covering the surface of a device layer, wherein the planarization layer comprises a plurality of pixel regions and a non-pixel region and the planarization layer is provided with a connecting hole exposing an output end; a first anode layer on the bottom and sidewall of the connecting hole and on the upper surface of a part of the planarization layer, the first anode layer spanning the pixel regions and the non-pixel region, and thefirst anode layer being electrically connected to the output end; a pixel defining layer covering the first anode layer of the non-pixel region, the pixel defining layer having a defining hole exposing an upper surface of the first anode layer of the pixel regions; a second anode layer positioned on the upper surface of the first anode layer of the pixel regions in the defining hole. The invention reduces the risk of anode cracking by setting an anode with a special structure, thereby improving the display performance of the display panel.

Description

Technical field [0001] The embodiments of the present invention relate to the field of semiconductor technology, and in particular to a display panel, a manufacturing method thereof, and a display device. Background technique [0002] OLED (Organic Light-Emitting Diode) is called Organic Light-Emitting Diode. OLED display technology has many advantages such as all-solid-state, active light-emitting, high contrast, ultra-thin, low power consumption, fast effect speed, wide working range, easy to realize flexible display and 3D display, etc., making it currently used in many display devices , For example, applied to televisions and mobile devices, and gradually penetrated into the fields of automobiles, virtual reality and health lighting. [0003] Flexible OLED refers to flexible organic light emitting diodes, which are manufactured based on flexible substrates and run on flexible substrates. Compared with traditional rigid OLEDs, flexible OLEDs are more flexible, lighter and thin...

Claims

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Application Information

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IPC IPC(8): H01L27/32H01L51/52H01L51/56
CPCH10K59/122H10K77/111H10K50/813H10K59/1201H10K71/00
Inventor 蒋岩东
Owner YUNGU GUAN TECH CO LTD
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