Unlock instant, AI-driven research and patent intelligence for your innovation.

OLED device and its manufacturing method and display panel

A technology for devices and substrates, applied in the fields of OLED devices and their preparation methods and display panels, capable of solving problems such as short service life and light energy waste of OLED devices

Active Publication Date: 2021-12-28
BOE TECH GRP CO LTD +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides an OLED device and its preparation method and a display panel, which are used to at least partially solve the problems of light energy waste and short service life of the OLED device

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • OLED device and its manufacturing method and display panel
  • OLED device and its manufacturing method and display panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1 of the present invention provides an OLED device, such as figure 1 As shown, the OLED device includes a pixel defining layer 2 and an anode layer 3 formed on a substrate 1, the pixel defining layer 2 includes an opening area, and an organic light-emitting functional layer 4 is placed in the opening area, and the organic light-emitting functional layer 4 includes An emission layer (EML) 41 , a hole transport layer (HTL) 42 , a hole injection layer (HIL) 43 , an electron transport layer (ETL) 44 , and an electron injection layer (EIL) 45 . The anode layer 3 includes a first anode 31 and a second anode 32, the first anode 31 covers at least the bottom of the opening area, the second anode 32 covers at least part of the sidewall of the opening area, and is connected with the first anode 31 at the bottom of the opening area. The bottom of the opening area is connected, wherein the material of the second anode 32 is a reflective material.

[0037] The OLED devic...

Embodiment 2

[0050] Embodiment 2 of the present invention provides an OLED device. The difference between the OLED device in Embodiment 2 and the OLED device in Embodiment 1 lies in that the structure and preparation process of the anode layer are different.

[0051] Such as figure 2 As shown, in Embodiment 2, the pixel defining layer 2 includes a first pixel defining layer 21 and a second pixel defining layer 22 , and the first pixel defining layer 21 is closer to the base substrate 1 than the second pixel defining layer 22 . The second anode 32 covers the first pixel defining layer 21 in the opening area, the first anode 31 is located between the first pixel defining layer 31 and the base substrate 1, and is connected to the thin film transistor (not shown in the figure) on the display panel. shown) connected. That is to say, the first anode 31 , the first pixel defining layer 21 , the second anode 32 , and the second pixel defining layer 22 are sequentially prepared.

[0052] The pix...

Embodiment 3

[0058] Embodiment 3 of the present invention provides a display panel. The display panel includes a plurality of OLED devices, and the OLED devices are the OLED devices provided in Embodiment 1 or Embodiment 2. The specific structure thereof will not be repeated here.

[0059] The display panel provided by the present invention includes an OLED device, and the OLED device includes a pixel defining layer 2 formed on a base substrate 1, and an anode layer 3 including a first anode 31 and a second anode 32, and the opening of the pixel defining layer 2 An organic light-emitting functional layer 4 is placed in the area, the first anode 31 covers at least the bottom of the opening area of ​​the pixel defining layer 2, the second anode 32 covers at least part of the sidewall of the opening area, and the material of the second anode 32 is reflective In this way, the second anode 32 can be used to reflect the light emitted by the light-emitting layer 41, increase the reflection area, i...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
angleaaaaaaaaaa
Login to View More

Abstract

The invention provides an OLED device and its preparation method and a display panel. The OLED device includes a pixel defining layer formed on a base substrate, an anode layer including a first anode and a second anode, and an opening area of ​​the pixel defining layer An organic light-emitting functional layer is placed inside, the first anode covers at least the bottom of the opening area of ​​the pixel defining layer, the second anode covers at least part of the sidewall of the opening area, and the material of the second anode is a reflective material, so that the reflection area can be increased , improve the light utilization rate, avoid the waste of light energy, thereby improving the display brightness; in this way, the brightness can be improved without increasing the driving voltage, and the service life of the blue light emitting material and the OLED device can be extended; moreover, the second anode is located between the pixel defining layer and the organic The organic light-emitting functional layer is wrapped between the light-emitting functional layers, which can block water vapor from entering the organic light-emitting functional layer and improve the WVTR performance of the OLED device.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an OLED device, a preparation method thereof, and a display panel. Background technique [0002] AMOLED (Active-Matrix Organic Light-Emitting Diode, Active-Matrix Organic Light-Emitting Diode) flexible display is a cutting-edge technology in the display field. It has the characteristics of wide NTSC (color gamut), low power consumption, thinner, and flexible. , has gradually become the current mainstream display, although after many years of technology accumulation and performance improvement, there are still some deficiencies, including: [0003] 1. Only 20-40% of the light emitted by the organic light-emitting layer is used for display, and most of the light is dissipated inside, resulting in a large amount of waste of light energy; [0004] 2. Limited by the blue light-emitting material, the brightness of blue light is low. In order to increase the brightness, the driving vo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/32H01L51/52
CPCH10K59/123H10K2102/351H10K59/80518H10K59/878H10K50/856H10K50/818H10K59/122H10K71/00H10K59/1201
Inventor 李兴郑海魏维格刘一泽宋海波
Owner BOE TECH GRP CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com