Non-Rectangular Touch Panel Frame Width Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Touch panels with non-rectangular sensor regions face challenges in minimizing the frame width due to the need for ground wires and insulation layers, which are not efficiently arranged in alternating electrode connections, leading to increased frame width and crosstalk issues.
Innovation Solution
A touch panel design featuring a non-rectangular detection region with first and second electrodes on opposite surfaces, surrounded by wiring and shield electrodes, where the electrodes are connected in an alternating arrangement to eliminate the need for ground wires between them, thereby reducing the frame width and suppressing crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ground wires and insulation layers are provided between alternating electrode connections in non-rectangular sensor regions, then crosstalk between electrodes is suppressed, but the frame width increases
Solution Approach 1:
The patent removes ground wires and insulation layers from the alternating electrode connection regions in non-rectangular sensor areas. By extracting these components that were causing frame width expansion, the invention achieves narrower frames while maintaining crosstalk suppression through alternative electrode arrangement and connection methods.
Solution Approach 2:
Instead of adding ground wires between alternating electrodes to suppress crosstalk, the invention inverts the approach by carefully designing the electrode connections and signal routing to inherently prevent crosstalk without requiring additional shielding components, thereby eliminating the need for extra frame space.
2Reliability
If ground wires are disposed between electrodes and conductor wires in alternating arrangement portions, then crosstalk is suppressed, but additional insulation layers are required increasing device complexity
Solution Approach 1:
The patent extracts and removes the ground wires and associated insulation layers from the alternating electrode connection regions. This extraction eliminates the need for complex multi-layer insulation structures while maintaining electrical isolation through alternative design approaches.
Solution Approach 2:
The conductor wires are designed to serve multiple functions: they connect electrodes while also providing inherent electrical isolation and signal routing. This multi-functionality eliminates the need for separate ground wires and dedicated insulation layers, reducing overall device complexity.
Data Source
AI summary
A touch panel includes a detection region that has a non-rectangular periphery shape, and a wiring region that surrounds the periphery of the detection region. In an alternating arrangement portion, of the periphery of the detection region, in which ends of first electrodes and ends of second electrodes are alternately positioned, first ends of the first electrodes and first wirings are electrically connected and second ends of the second electrodes face shield electrodes, or first ends of the second electrodes and second wirings are electrically connected and second ends of the first electrodes face the shield electrodes.