A kind of oled display panel, its preparation method and its terminal device

A technology for display panels and encapsulation layers, used in semiconductor/solid-state device manufacturing, semiconductor devices, electrical components, etc., can solve problems such as failure, affecting service life, and deterioration of light-emitting layers, so as to improve service life and prevent water and oxygen intrusion. Effect

Active Publication Date: 2022-03-29
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0006] In the OLED display, after laser cutting in the AA area, external water and oxygen will directly invade into the OLED light-emitting layer below it along the cathode layer (Cathode) in the functional layer, thereby causing the The luminescent layer deteriorates due to the intrusion of external water and oxygen, which leads to its failure and affects its service life

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  • A kind of oled display panel, its preparation method and its terminal device
  • A kind of oled display panel, its preparation method and its terminal device
  • A kind of oled display panel, its preparation method and its terminal device

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Embodiment Construction

[0038] 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. Apparently, the described embodiments are only some, not all, embodiments of the present invention. Based on the implementation manners in the present invention, all other implementation manners obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0039] The terms "first", "second", "third", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects and not necessarily to describe a specific order or sequentially. It should be understood that the items so described are interchangeable under appropriate circumstances. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusiv...

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Abstract

The invention provides an OLED display panel, its preparation method and its terminal device. Wherein the OLED display panel includes a substrate layer, a TFT constituent layer, a flat layer, an anode, a pixel definition layer, a light emitting layer, a cathode layer and an encapsulation layer. Wherein the interlayer dielectric layer in the TFT constituent layer is further provided with an undercut structure (undercut) that goes deep into the substrate layer, wherein a barrier inorganic layer is also provided on the inner surface of the undercut structure . The invention provides an OLED display panel, the functional layer structure of which can effectively prevent the intrusion of external water and oxygen into its light-emitting layer.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to an OLED display panel, a preparation method thereof and a terminal device for its application. Background technique [0002] Due to the advantages of self-illumination, high contrast, wide viewing angle, low power consumption, and bendability, organic light-emitting diodes (OLEDs) are generally favored by industry developers and the market public. Correspondingly, the flexible OLED display derived from it has gradually replaced the LCD display due to its performance advantages such as flexibility and thinness, and has become the mainstream display in the market. [0003] With the use of OLED displays, the market's requirements for the display area of ​​the display are getting higher and higher, that is, it is necessary to minimize the width of the frame, increase its screen-to-body ratio, and even require no frame to achieve a "full screen" display. Effect. [0004] Fu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/32H01L51/52H01L51/56
CPCH10K59/12H10K50/84H10K71/00
Inventor 王一佳曹君
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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