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

OLED display panel and its preparation method

A display panel and display area technology, which is applied in the direction of identification devices, instruments, semiconductor devices, etc., can solve problems such as breakage, signal lines that are easily damaged by stress, and poor display of OLED display panels, so as to avoid breakage and improve bending resistance Fold performance, improve the effect of service life

Active Publication Date: 2021-05-07
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides an OLED display panel and a preparation method thereof, which solves the problem that the neutral layer in the bending area is below the signal wiring layer due to the high Young's modulus of the flexible base material of the OLED display panel. When the bending area is bent, the signal wiring is easily damaged by stress and the line breaks, which in turn leads to the technical problem of poor display of the OLED display panel

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 display panel and its preparation method
  • OLED display panel and its preparation method
  • OLED display panel and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 2 As shown, the OLED display panel 100 provided by the embodiment of the present invention includes a flexible substrate 101, and the surface of the flexible substrate 101 defines a display area 102, a bending area 103 at one end of the display area 102, and a flexible substrate 101. The binding area 104 on the back, the bending area 103 can be bent to the binding area 104, the signal wiring layer 105 is arranged in the bending area 103, and the signal wiring layer 105 is connected to the display The area 102 and the bonding area 104, generally, the signal wiring layer 105 includes a plurality of signal wirings, such as scanning lines, data lines and other metal wirings.

[0038] Further, a thin film transistor array layer is also arranged on the flexible substrate 101; an interlayer dielectric layer (InterLayer Dielectric, ILD) 106 is arranged on the thin film transistor array layer, wherein the signal wiring layer 105 is arranged on the on the ILD lay...

Embodiment 2

[0044] Such as image 3 As shown, the method for manufacturing the OLED display panel 100 provided by the embodiment of the present invention includes the following steps:

[0045] S10: Prepare a sacrificial layer on the glass 112 corresponding to the bending region 103, the sacrificial layer 113 is composed of a plurality of nanoparticles 1131, and prepare a flexible substrate 101 on the sacrificial layer 113 and the glass 112;

[0046] Specifically, such as Figure 4A As shown, generally, the flexible substrate 101 located in the bending region 103 is usually composed of multiple PI layers, so when coating the lowermost PI layer on the glass 112, a plurality of the nanoparticles 1131 is doped into the PI liquid, and then the lowermost PI layer of the flexible substrate 101 corresponding to the bending region 103 is transformed into the sacrificial layer 113, and the thickness of the sacrificial layer 113 is several hundred nanometers to several micrometers magnitude, and t...

Embodiment 3

[0064] Such as Figure 5 As shown, the embodiment of the present invention also provides a display device 200, the display device 200 includes the OLED display panel 100 in the first embodiment, the display device 200 can be a TV, a mobile phone, a notebook computer, a smart phone Display devices such as wearable display devices may also be other display devices. The display device 200 has all the beneficial effects of the OLED display panel 100 , which will not be repeated here.

[0065] The beneficial effects are: the OLED display panel provided by the present invention and the preparation method thereof provided by the present invention adjust the neutral layer in the bending area by arranging a buffer layer composed of patterned cavities on the flexible substrate corresponding to the bending area. Into the signal wiring layer, the signal wiring is prevented from being broken due to stress damage, and the bending resistance of the bending area is improved, thereby improving...

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

No PUM Login to View More

Abstract

The present invention provides an OLED display panel and a preparation method thereof. The OLED display panel includes a flexible substrate, and the surface of the flexible substrate defines a display area, a bending area at one end of the display area, and a flexible substrate at the back of the flexible substrate. The binding area, the bending area is configured to be bent to the binding area, the signal wiring layer is arranged in the bending area, and the patterned layer is arranged on the flexible substrate corresponding to the bending area The buffer layer composed of holes adjusts the neutral layer in the bending area to the signal wiring layer, avoiding the breakage of the signal wiring due to stress damage, improving the bending resistance of the bending area, thereby improving the The service life of the above-mentioned OLED display panel.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an OLED display panel and a preparation method thereof. Background technique [0002] In flat panel display technology, Organic Light-Emitting Diode (OLED) display has many advantages such as thinness, active light emission, fast response speed, large viewing angle, wide color gamut, high brightness and low power consumption, etc., and has gradually become the successor. The third generation display technology after liquid crystal display. [0003] With the continuous development of science and technology and the gradual increase of people's demand for products with narrow bezels, it has become an effective technical means to reduce the lower bezel of the display by padbending. However, when the bending area of ​​the OLED display panel has a small bending radius, it is easy to cause the internal signal traces to be more easily damaged by stress and break, thereby causing defect...

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): H01L27/12H01L27/32G09F9/30G09F9/33
CPCH01L27/1244H01L27/1218G09F9/301G09F9/33H10K59/131H10K59/1201
Inventor 杨汉宁
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH 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