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OLED (Organic Light Emitting Diode) substrate, preparation method thereof and OLED display device

A technology for display devices and substrates, which can be used in semiconductor/solid-state device manufacturing, electrical components, and electrical solid-state devices, etc.

Active Publication Date: 2019-04-09
BOE TECH GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Embodiments of the present invention provide an OLED substrate and its preparation method, and an OLED display device, which can solve the problem of open circuit or conductive uniformity caused by the breakage of the second electrode layer at the junction between the side of the pixel defining layer located in the opening area and the first surface bad question

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  • OLED (Organic Light Emitting Diode) substrate, preparation method thereof and OLED display device
  • OLED (Organic Light Emitting Diode) substrate, preparation method thereof and OLED display device
  • OLED (Organic Light Emitting Diode) substrate, preparation method thereof and OLED display device

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Embodiment Construction

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0035] In related technologies, the OLED substrate includes a plurality of sub-pixels, and adjacent sub-pixels are separated by a Pixel Definition Layer (PDL for short, also called a bank), for example figure 1 As shown, each sub-pixel includes a first electrode 20 , a light emitting layer 30 and a second electrode sequentially disposed on the bottom plate 10 . Each opening area of ​​the pixel defining layer 50 exposes a first electrode 20 , the light emitting...

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Abstract

The embodiment of the invention provides an OLED (Organic Light Emitting Diode) substrate, a preparation method thereof and an OLED display device, relates to the technical field of display, and can solve the problem of disconnection or poor electric conduction evenness caused by the breakage of a second electrode layer on the junction position of the side surface and the first surface, which arepositioned in one opening area, of a pixel definition layer. The OLED substrate comprises a plurality of first electrodes arranged on a bottom plate, a pixel definition layer, a light emitting layer,a second electrode layer and an auxiliary electrode, wherein the pixel definition layer comprises a plurality of opening areas, and one first electrode is exposed out of each opening area; the light emitting layer is arranged in each opening area; the second electrode layer is arranged on the light emitting layer and covers the pixel definition layer; the auxiliary electrode extends to the first surface from the side surface, which is positioned in the opening area, of the pixel definition layer to the first surface and is in contact with the second electrode layer; and the first surface is the surface, which is far away from the bottom plate, of the pixel definition layer.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an OLED substrate, a preparation method thereof, and an OLED display device. Background technique [0002] OLED (Organic Light Emitting Diode, Organic Light Emitting Diode) display device has a series of advantages such as self-luminescence, fast response speed, high brightness, full viewing angle, and flexible display, so it has become a highly competitive and promising next-generation display device. A generation of display devices. [0003] An OLED display device includes an anode, a cathode, and a light-emitting layer. When a voltage is applied to the anode and the cathode, the light-emitting layer will emit light. At present, OLED display devices realize full-color display in two ways, one is that the light-emitting layer emits white light, and the three primary colors are obtained by setting a color film layer (Color Film, CF for short). The other is that the light-emitt...

Claims

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Application Information

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IPC IPC(8): H01L27/32H01L51/52H01L51/56
CPCH10K59/122H10K59/131H10K50/814H10K50/824H10K59/1201H10K71/00
Inventor 宋莹莹
Owner BOE TECH GRP CO LTD
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