Capacitive Touch Panel Electrode Pattern with Segmented Protective Blocks
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Solution Overview
Problem
Conventional capacitive touch panels with lattice electrode patterns suffer from limited light transmission and increased material usage due to the presence of multiple layers with different refractive indices and a continuous protective layer, which affects the visibility and efficiency of integrated displays.
Innovation Solution
The electrode pattern structure incorporates a substrate with intersecting first and second electrodes, insulators, and protective blocks at intersections, replacing the continuous protective layer to enhance light transmission and reduce material usage, while maintaining touch sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a continuous protective layer is used to protect the electrode intersections, then the structural integrity and protection of electrodes is improved, but the light transmission is reduced and material usage increases
Solution Approach 1:
The continuous protective layer is segmented into discrete protective blocks positioned only at electrode intersections. This segmentation allows light to pass through the gaps between blocks while maintaining protection where needed, resolving the contradiction between protection and light transmission.
Solution Approach 2:
Protection is applied locally only at intersection points rather than uniformly across the entire electrode area. This local quality approach ensures protection is provided where it is most needed (at vulnerable intersections) while minimizing interference with light transmission in other areas.
2Reliability
If a continuous protective layer is used to protect the electrode intersections, then the structural integrity is improved, but the material cost and usage increase
Solution Approach 1:
The protective layer is divided into discrete blocks at intersections rather than a continuous covering. This segmentation significantly reduces the total amount of protective material required while maintaining protection at critical points, thus reducing material loss and cost.
Solution Approach 2:
The unnecessary portions of the protective layer (those not at intersections) are extracted or removed from the design. This extraction eliminates wasted material while preserving the essential protective function at electrode intersections.
3Reliability
If multiple layers with different refractive indexes are used in the touch panel, then the protective function and structural completeness is improved, but the light transmission is limited and visibility is reduced
Solution Approach 1:
The protective layer is segmented into discrete blocks rather than a continuous structure. This segmentation creates gaps that allow light to pass through, reducing the overall impact of refractive index differences on light transmission while maintaining protective functionality at intersection points.
Data Source
AI summary
An electrode pattern structure of a capacitive touch panel is provided. The electrode pattern structure of a capacitive touch panel of the present invention, in one embodiment, comprises a substrate, at least one first electrode disposed on said substrate, an insulator disposed on said at least one first electrode, at least one second electrode disposed on said insulator and overlapped with said at least one first electrode at least one intersection, and at least one protective block located on said at least one second electrode and positioned at said at least one intersection.