Conductive Flexible Substrate for OLED Anodes
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Solution Overview
Problem
OLED display devices face issues with low conductivity of anodes, which affects their performance, and existing materials like conductive polymers do not match the conductivity of metal Indium Tin Oxides (ITO), leading to suboptimal performance.
Innovation Solution
A conductive flexible substrate is created with mesh conductive lines made of metal materials like silver or copper and a conductive layer of nano materials such as graphene or carbon nanotubes, integrated into a photosensitive polymer substrate, enhancing conductivity without compromising transparency or flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conductive polymer material is used for anodes, then the substrate maintains flexibility, but the conductivity of the anodes remains low compared to metal and ITO
Solution Approach 1:
The patent uses composite materials by combining metal materials (silver or copper) for mesh conductive lines with nano conductive materials (graphene or carbon nanotubes) for the conductive layer, integrated into a photosensitive polymer substrate. This composite structure achieves high conductivity comparable to metal and ITO while maintaining the flexibility and transparency required for OLED displays.
2Strength
If metal materials are used for mesh conductive lines, then conductivity is improved, but the substrate transparency may be compromised
Solution Approach 1:
The patent applies local quality by using a mesh structure for the conductive lines where metal materials are concentrated in specific locations (the mesh lines) rather than uniformly across the substrate. This localized placement provides high conductivity where needed while leaving the majority of the substrate transparent for light transmission in OLED displays.
Solution Approach 2:
The mesh conductive lines create a porous or open structure that allows light to pass through the gaps between the conductive lines. This porous configuration reduces the overall light blocking effect while maintaining the conductive pathways, thereby preserving substrate transparency while achieving high conductivity.
3Strength
If a conductive layer of nano materials is added among mesh conductive lines, then conductivity is further enhanced, but the device complexity increases
Solution Approach 1:
The patent merges multiple conductive elements (metal mesh conductive lines and nano conductive material layer) into a single integrated conductive flexible substrate structure. This combination creates a unified component that provides enhanced conductivity without requiring separate assemblies, thereby reducing overall device complexity while achieving superior electrical performance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution significantly improves the conductivity of anodes in OLED display devices, addressing the low conductivity issue and maintaining the flexibility and transparency of the substrate, thereby enhancing overall display performance.
Implementation Method 1
mesh conductive lines located on the flexible substrate and embossing from a surface of one side of the flexible substrate, and a conductive layer filling among the mesh conductive lines
Implementation Method 2
Material of the flexible substrate is photosensitive polymer
Data Source
AI summary
The present invention provides a conductive flexible substrate and a manufacture method thereof and an OLED display device and a manufacture method thereof. The conductive flexible substrate comprises a flexible substrate (1), mesh conductive lines (2) located on the flexible substrate (1) and embossing from a surface of one side of the flexible substrate (1), and a conductive layer (3) filling among the mesh conductive lines (2); a surface of one side of the flexible substrate (1) away from the mesh conductive lines (2) and the conductive layer (3) is flat. The conductive flexible substrate is capable of promoting the conductivity of the flexible substrate, and applying the conductive flexible substrate to an OLED display device can solve the issue of low conductivity of anodes in the OLED display device.