OLED (organic light-emitting diode) display panel, display apparatus and manufacturing method for OLED display panel

A display panel and substrate technology, which is applied in semiconductor/solid-state device manufacturing, electrical components, electric solid-state devices, etc., can solve problems such as intrusion into OLED display panels, poor wettability of the first water blocking layer, and reduced lifespan of OLED display panel devices. Achieve the effect of reducing voids, increasing life, and reducing possibility

Active Publication Date: 2016-10-12
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, since the first water-blocking layer usually has poor wettability, when making the organic layer, it is difficult for the ink to flow level on the first water-blocking layer, but it is easy to gather into multiple ink droplets, resulting in multiple ink droplets on the organic layer. There is a hole that runs through the upper and lower surfaces, causing impurities such as oxygen from the outside to easily invade the inside of the OLED display panel through these holes, causing the devices inside the OLED display panel to be oxidized and reduce the lifespan.

Method used

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  • OLED (organic light-emitting diode) display panel, display apparatus and manufacturing method for OLED display panel
  • OLED (organic light-emitting diode) display panel, display apparatus and manufacturing method for OLED display panel

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Embodiment 1

[0026] This embodiment provides an OLED display panel, figure 1 It shows a sectional view formed by cutting the OLED display panel of this embodiment in the direction of gravity when it is placed flat, and the sectional view shows a part close to the periphery of the OLED display panel, figure 1 The left side in represents the outer area of ​​the OLED display panel.

[0027] refer to figure 1 The OLED display panel provided in this embodiment is described, the bottom of which is the substrate 10, on which a plurality of functional layers are sequentially arranged from bottom to top, and these functional layers include: an array layer (Array layer) 20, a light emitting region 30, Light emitting layer (EL layer) 40, cathode layer 50, first water blocking layer 60, organic layer 80 and second water blocking layer 60, wherein the light emitting area includes ground line (VSS line) 31 and pixel defining layer (PDL layer) 32. Wherein, the above-mentioned substrate 10 may be a fle...

Embodiment 2

[0036] This embodiment provides an OLED display panel, figure 2 When the OLED display panel is placed flat, a cross-sectional view formed by cutting it in the direction of gravity is shown, and the cross-sectional view shows a part of the OLED display panel close to the periphery, wherein, figure 2 The left side of represents the outer area of ​​the OLED display panel. Only the differences between the OLED display panel and the first embodiment will be described below.

[0037] In this embodiment, the first water blocking layer 60 and the organic layer 80 are the same as in Embodiment 1, and a wetting layer 170 is provided between the first water blocking layer 60 and the organic layer 80, and the wetting layer 170 The same layer is also provided with a limiting layer 171 surrounding and close to the wetting layer 170 , and the limiting layer 171 is hydrophobic.

[0038]In the prior art, in the OLED display panel, the second water blocking layer 60 covers all the functiona...

Embodiment 3

[0043] This embodiment provides a method for manufacturing an OLED display panel, which is used to manufacture the OLED display panel provided in Embodiment 1 or Embodiment 2. The method for manufacturing the OLED display panel includes:

[0044] In step S1, a wetting layer is formed on the substrate on which the first water blocking layer is formed by chemical vapor deposition or coating. This step forms a wetting layer on the first water blocking layer, wherein the material forming the wetting layer includes any one of silicon dioxide, silicon oxynitride and cationic surfactant, or any two of these substances or a combination of two or more. In addition, the above materials can also be made into an ink solution, and a wetting layer is formed on the first water blocking layer by means of inkjet printing.

[0045] Step S2, forming a thin film organic encapsulation layer on the substrate on which the wetting layer is formed. The materials for forming the organic layer are the...

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Abstract

The invention discloses an OLED (organic light-emitting diode) display panel, a display apparatus and a manufacturing method for the OLED display panel, relates to the display technical field, and aims to reduce the cavity in the organic layer, lower the probability of oxidization of the devices in the interior of the OLED display panel, and prolong the service life of the devices. The OLED display panel comprises a substrate, and a first water-blocking layer and an organic layer which are arranged on the substrate from the near to the distant in sequence, wherein the OLED display panel also comprises a wetting layer which is positioned between the first water-blocking layer and the organic layer; and the wetting layer is hydrophilic. The display apparatus comprises the OLED display panel disclosed by the technical scheme; and the manufacturing method for the OLED display panel is used for manufacturing the OLED display panel disclosed by the technical scheme. The invention provides the OLED display panel, the display apparatus and the manufacturing method for the OLED display panel.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an OLED display panel, a display device and a method for manufacturing the OLED display panel. Background technique [0002] OLED (Organic Light-Emitting Diode, organic electroluminescent diode) display device has the characteristics of self-luminescence, simple structure, ultra-thin, fast response, wide viewing angle, low power consumption and flexible display, so it is widely used in display field. [0003] Such as figure 1 As shown, the OLED display device specifically includes an OLED display panel, and the OLED display panel includes a substrate, and an array layer, a light emitting region, a light emitting layer, a cathode layer, a first Water blocking layer, organic layer, etc. In the prior art, the organic layer is usually fabricated by inkjet printing, that is, ink is dripped on the substrate formed with the first water blocking layer, the ink is leveled on the first...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/32H01L51/52H01L51/56
CPCH10K59/12H10K50/844H10K71/00
Inventor 张嵩王涛王有为
Owner BOE TECH GRP CO LTD
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