Touch Panel Crack Guide Grooves for Deformation Stress Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Capacitive On Cell touch panels face issues with cracks in the deformation region due to material stress, leading to disconnection of electrodes and leads, resulting in poor touch control.
Innovation Solution
Incorporating a deformation region with crack guide grooves in a touch panel, where the grooves are strategically oriented to control deformation direction and minimize stress, thereby preventing cracks and maintaining touch control functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a deformation region is provided in the touch panel to accommodate bending, then the flexibility and adaptability of the touch panel are improved, but cracks occur in the deformation region due to material stress, leading to disconnection of electrodes and leads
Solution Approach 1:
The patent divides the deformation region into multiple zones by introducing crack guide grooves that segment the continuous material structure. These grooves create discrete stress management zones that prevent uncontrolled crack propagation while maintaining the overall flexibility of the touch panel during bending operations
Solution Approach 2:
The crack guide grooves act as intermediary structures that mediate between the conflicting requirements of flexibility and crack resistance. By providing predetermined stress relief pathways, these grooves serve as intermediaries that allow the material to deform without developing harmful cracks, thus resolving the contradiction between adaptability and reliability
2Productivity
If the touch panel structure is simplified to reduce manufacturing complexity, then the production efficiency is improved, but the ability to manage deformation stress is reduced, leading to increased crack formation
Solution Approach 1:
The patent applies preliminary action by pre-forming crack guide grooves into the deformation region during the manufacturing process. This preliminary structuring of the material creates built-in stress management capabilities before the product is put into service, allowing the touch panel to inherently resist cracks without requiring complex additional components or post-processing operations
Data Source
AI summary
Disclosed in the exemplary embodiments of the present disclosure are a touch panel and a manufacturing method therefor, and a display touch device. The touch panel comprises a flat region, bending regions located on at least two adjacent sides of the flat region, and a deformation region located between the adjacent bending regions; a touch structure is provided in the flat region, the bending regions and the deformation region, and the deformation region is provided with at least two crack guide grooves; in a plane parallel to the touch panel, the shape of the crack guide grooves includes a strip shape extending in extending directions, and the extending directions of the at least two crack guide grooves intersect.