Touch Substrate Multi-Edge Bending with Segmented Electrodes
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Solution Overview
Problem
Current display panel bending technologies face difficulties in achieving bending at multiple edges, such as two adjacent, three, or four edges, due to the risk of corner wrinkles, which affect touch effect and reliability and increase design complexity.
Innovation Solution
A touch substrate with a combined electrode structure, featuring a planar part with a double-layer electrode structure and bending parts with a single-layer electrode structure, allowing for bending at multiple edges while eliminating wrinkles and simplifying the design and preparation process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display panel is bent at multiple edges (two adjacent, three, or four edges), then the screen-to-body ratio is improved, but corner wrinkles occur which deteriorate touch effect and reliability
Solution Approach 1:
The touch substrate is divided into a planar part and bending parts, with different electrode structures assigned to each region. The planar part uses a double-layer electrode structure while the bending part uses a single-layer electrode structure, allowing each segment to be optimized for its specific function and bending requirements.
Solution Approach 2:
Different regions of the touch substrate are given different structural qualities. The planar part maintains a double-layer electrode structure for high-precision touch detection, while the bending part adopts a single-layer electrode structure that is more flexible and resistant to wrinkle formation during bending.
2Adaptability or versatility
If the display panel is bent at multiple edges, then the screen-to-body ratio is improved, but the design complexity increases
Solution Approach 1:
The touch substrate is segmented into planar and bending parts with distinct electrode structures. This segmentation allows for standardized design modules that can be replicated across different bending configurations (two adjacent edges, three edges, or four edges), reducing overall design complexity.
Solution Approach 2:
The single-layer electrode structure in the bending part serves multiple functions: it enables flexible bending at multiple edges, maintains touch detection capability, and prevents wrinkle formation. This multi-functional design simplifies the overall system complexity.
Data Source
AI summary
A touch substrate, a preparation method and a driving method thereof, and a touch display panel are provided. The touch substrate includes a planar part and at least a bending part. The bending part extends from an edge of the planar part and is bent to a side of the planar part. The planar part is provided with a main touch module having a double-layer electrode structure, and the bending part is provided with a side touch module having a single-layer electrode structure.