Flexible Display Touch Electrode Stress Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional flexible display technologies face challenges in manufacturing high-quality, lightweight, thin, and flexible OLED displays that can effectively manage stress and maintain touch sensitivity while minimizing material and labor costs.
Innovation Solution
A flexible display design featuring a conductive layer, insulation layer, and touch electrode layer sequentially stacked on a flexible display panel with stress buffering holes and via holes, where conductive bodies connect touch sensing and driving electrodes, reducing stress and enabling flexible touch functionality, and a manufacturing method that includes forming these layers to achieve a lightweight and flexible touch display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional flexible display technology is used, then manufacturing is simpler, but the display cannot achieve high quality with light weight, thin profile, and flexibility
Solution Approach 1:
The display structure is divided into multiple functional layers including flexible substrate, OLED light-emitting layer, touch sensor layer, and protective layer. Each layer is independently manufactured and then assembled, allowing optimization of each component while maintaining overall display quality and flexibility
Solution Approach 2:
The patent uses composite material structures combining organic OLED materials with flexible substrates and protective coatings. This composite approach enables simultaneous achievement of thin profile, flexibility, and high display quality that conventional single-material structures cannot achieve
2Weight of moving object
If the display is made lighter and thinner, then flexibility is improved, but stress management becomes more difficult
Solution Approach 1:
The patent employs flexible thin film structures for the substrate and protective layers that can accommodate bending and stretching stresses. These thin films are specifically designed with appropriate thickness and material properties to reduce weight while managing stress distribution during flexing operations
Solution Approach 2:
The stress buffer layer is positioned between the OLED layer and touch sensor layer to preemptively absorb and distribute mechanical stresses before they reach critical components. This cushioning structure prevents stress concentration that would otherwise occur in thin, lightweight displays during bending or stretching
3Ease of operation
If touch electrode layers are added for touch functionality, then touch sensitivity is improved, but stress and structural complexity increase
Solution Approach 1:
The touch sensor electrodes and OLED structure are integrated into the same manufacturing process and layered architecture. The transparent conductive oxide layers serving as touch electrodes are deposited during the OLED fabrication sequence, merging two functional systems into a unified structure that reduces overall complexity
Solution Approach 2:
Ultra-thin flexible conductive films are used for touch electrodes instead of rigid transparent conductors. These thin film electrodes maintain touch sensitivity while conforming to the flexible substrate, enabling touch functionality without compromising flexibility or adding excessive structural complexity
4Manufacturing precision
If multiple layers are stacked to improve functionality, then display quality is enhanced, but manufacturing complexity increases
Solution Approach 1:
The multi-layer display structure is manufactured using modular fabrication techniques where each layer is processed independently through specialized equipment and then assembled. This segmentation of manufacturing steps allows each layer to be optimized separately while maintaining overall quality standards
Solution Approach 2:
The flexible substrate serves multiple functions simultaneously: structural support, electrical insulation, and mechanical flexibility. This multi-functionality reduces the need for additional separate components, simplifying the overall manufacturing process despite the presence of multiple functional layers
Data Source
AI summary
A flexible display and manufacturing method for the same are disclosed. The flexible display includes a flexible display panel, a conductive layer, an insulation layer, and a touch electrode layer. Wherein the flexible display panel includes multiple sub-pixels, the touch electrode layer includes multiple touch sensing electrodes and multiple touch driving electrodes, the touch sensing electrodes and the touch driving electrodes are intersected and insulated. Wherein the multiple sub-pixels are directly opposite to the multiple stress buffering holes respectively, the conductive layer includes multiple conductive bodies disposed separately with the stress buffering holes, the conductive body is directly opposite to an interval region of the sub-pixels, when the touch driving electrodes are electrically connected, each two touch sensing electrodes are electrically connected through the conductive body, when the touch sensing electrodes are electrically connected, each two touch driving electrodes are electrically connected through the conductive body.