Capacitive Touch Panel Conductor Pattern Structure
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Solution Overview
Problem
Conventional capacitive touch panels are thick due to the need for two capacitive sensing layers separated by insulation, complicating manufacturing and hindering miniaturization.
Innovation Solution
A capacitive touch panel with a thin conductor pattern structure featuring first-axis and second-axis conductor assemblies on the same substrate surface, interconnected by conduction lines, where an insulation layer isolates these lines, allowing for capacitive effects between adjacent cells when touched.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two capacitive sensing layers are used separated by insulation material, then touch detection capability is improved, but panel thickness increases and manufacturing complexity increases
Solution Approach 1:
The patent merges two separate capacitive sensing layers into a single integrated structure where first-axis and second-axis conductor assemblies are formed on the same substrate surface. The insulation layer selectively isolates only the conduction lines while allowing conductor cells to remain exposed, eliminating the need for two separated sensing layers while maintaining dual-axis touch detection capability.
Solution Approach 2:
The patent transitions from a three-layer stacked structure (two sensing layers with insulation between them) to a planar two-dimensional arrangement where first-axis and second-axis conductor assemblies are distributed on the same substrate surface. This dimensional change reduces panel thickness while preserving the capacitive sensing function through selective insulation of conduction lines only.
2Reliability
If two capacitive sensing layers separated by insulation are used, then touch detection capability is improved, but manufacturing complexity increases
Solution Approach 1:
The patent combines the functions of two separate sensing layers into a single integrated conductor pattern structure. By forming first-axis and second-axis conductor assemblies on the same substrate surface with selective insulation of conduction lines, the manufacturing process is simplified while maintaining dual-axis capacitive touch detection capability.
Solution Approach 2:
The patent extracts the insulation function to apply only where necessary - specifically on conduction lines to prevent electrical interference between first-axis and second-axis conductors. The conductor cells remain uninsulated and exposed on the surface, eliminating the need for complete insulation layers required in conventional two-layer structures.
3Reliability
If conventional two-layer structure is used, then capacitive sensing function is achieved, but production cost increases and yield decreases
Solution Approach 1:
The patent merges multiple functional layers into a single integrated conductor pattern structure formed on one substrate surface. This consolidation reduces the number of manufacturing steps, improves production yield, and lowers costs while maintaining the capacitive sensing function through selective insulation of conduction lines.
Solution Approach 2:
The patent changes the insulation application parameter from covering entire sensing layers to selectively covering only conduction lines. This parameter change simplifies the manufacturing process, reduces material usage, improves production efficiency, and maintains the necessary electrical isolation for capacitive sensing functionality.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design simplifies the structure, reduces thickness, and facilitates low-cost, high-yield manufacturing while maintaining effective touch detection capabilities.
Implementation Method 1
The capacitive touch panel employs a change in capacitance caused between a transparent electrode and the electrostatics of human body to induce an current based on which the touch location can be identified
Data Source
AI summary
Disclosed is a conductor pattern structure of a capacitive touch panel. First-axis conductor assemblies and second-axis conductor assemblies are formed on a surface of a substrate. Each first-axis conductor assembly includes a plurality of first-axis conductor cells that are interconnected by first-axis conduction lines. An insulator is formed on a surface of each adjacent first-axis conductor cell. Each second-axis conductor assembly includes a plurality of second-axis conductor cells that are interconnected by second-axis conduction lines. Each second-axis conduction line extends across the insulator disposed on the adjacent first-axis conductor cell.