Flexible Display Driver Connection Reliability via Conductive Intermediaries
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Solution Overview
Problem
Flexible display apparatuses face a decrease in electrical connection reliability due to stress applied when the flexible display panel and wires are bent, affecting the connectivity between drivers.
Innovation Solution
The use of conductive connection members, such as anisotropic conductive films or conductive polymer materials, between substrate extension portions to electrically connect drivers, reducing bending stress and enhancing reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the flexible display panel and wires are bent to achieve flexibility, then the display apparatus can be folded or curved, but stress is applied to the wires causing decreased electrical connection reliability
Solution Approach 1:
A conductive connection member is introduced as an intermediary component between the first and second substrate extension portions. This conductive connection member includes a conductive filler embedded in a resin layer, providing a stable electrical connection path that is less susceptible to bending stress compared to traditional wire connections, thereby maintaining electrical connection reliability while preserving flexibility
Solution Approach 2:
The conductive connection member is constructed as a composite material consisting of a conductive filler (such as metal particles or flakes) embedded within a resin matrix. This composite structure combines the flexibility and stress-absorption capabilities of the resin with the electrical conductivity of the filler, enabling the connection to withstand bending while maintaining electrical connectivity
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 effectively increases the electrical connection reliability of flexible display apparatuses by reducing bending stress on wires, ensuring stable connectivity between drivers even when the panel is bent.
Implementation Method 1
The first conductive connection member includes an anisotropic conductive film (ACF) material
Implementation Method 2
The first conductive connection member includes a conductive polymer material such as polyacetylene, polyparaphenylene, polypyrole or polyaniline
Data Source
AI summary
A flexible display apparatus includes a flexible substrate including a first surface, a second surface, a first side surface and a second side surface connected to the first side surface. A display layer is disposed on the first surface. A first substrate extension portion extends from the first side surface and is bent along the first side surface to overlap the flexible substrate. A second substrate extension portion extends from the second side surface and is bent along the second side surface to overlap the flexible substrate and the first substrate extension portion. First and second drivers provide driving signals to the display layer, wherein the first and second drivers are mounted on the first and second substrate extension portions, respectively. A first conductive connection member is disposed between the first and second substrate extension portions, electrically connecting the first extension portion with the second extension portion.