Flexible Touch-Sensing Module With Segmented Sensing Layers
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Solution Overview
Problem
Large-sized touch display devices are cumbersome and difficult to carry due to their size and storage requirements, necessitating a flexible solution that maintains functionality while allowing for folding and unfolding.
Innovation Solution
A touch display device with a substrate having a first region, a second region, and a flexible region, along with a sensing layer and display modules that enable the device to transition between folded and unfolded states, utilizing a flexible substrate and separate sensing pattern layers to prevent electrical disruptions during bending.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If a large-sized touch display is used to provide better visual experience and controllability, then visibility and controllability are improved, but the device becomes cumbersome and difficult to carry
Solution Approach 1:
The substrate is divided into three distinct regions: a first region, a flexible region, and a second region. This segmentation allows the display to be folded at the flexible region while maintaining functional display areas in the first and second regions, thus achieving both large display area and portability.
Solution Approach 2:
The flexible region enables the substrate to dynamically transition between folded and unfolded states. This dynamic capability allows the device to change its physical configuration based on usage requirements, providing large display area when unfolded and compact form factor when folded.
2Ease of operation
If a flexible substrate is used to enable folding, then portability is improved, but electrical disruptions may occur during bending
Solution Approach 1:
The sensing layer is segmented into a first sensing pattern layer and a second sensing pattern layer, corresponding to the first and second regions respectively. This segmentation isolates the sensing patterns from the flexible region, preventing electrical disruptions during bending while maintaining touch sensitivity in the display areas.
Solution Approach 2:
Different regions of the substrate have different functional properties: the first and second regions contain sensing patterns for touch detection, while the flexible region is designed to be bendable without electrical components. This local differentiation ensures electrical stability in sensing regions while enabling flexibility in the flexible region.
3Ease of operation
If sensing patterns are placed across the entire substrate including flexible region, then touch sensitivity is maintained, but wire breaks occur during folding
Solution Approach 1:
The sensing layer is divided into separate first and second sensing pattern layers that correspond to the first and second regions, with the flexible region containing no sensing patterns. This segmentation prevents wires from being subjected to bending stress while maintaining touch sensitivity in the functional display areas.
Solution Approach 2:
The sensing patterns are extracted from the flexible region and placed only in the first and second regions. This extraction removes the source of electrical disruption from the bending area, preventing wire breaks during folding while preserving touch sensitivity where needed.
Data Source
AI summary
A touch-sensing module is disclosed. The touch-sensing module includes: a substrate having a first region, a second region and a flexible region configured between the first region and the second region so as to enable the touch-sensing module to have a folded state and an unfolded state; and a sensing layer configured under the substrate and having a first sensing pattern layer and a second sensing pattern layer, wherein the first sensing pattern layer corresponds to the first region and the second sensing pattern layer corresponds to the second region.