Transparent Capacitive Touch Panel Assembly With Fewer Layers
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Solution Overview
Problem
Conventional transparent capacitive touch panels face challenges with high manufacturing costs, complex assembly processes, and increased thickness due to the need for multiple indium-tin oxide layers and insulating layers, which also reduce manufacturing yield.
Innovation Solution
A transparent capacitive touch panel design featuring a transparent cover lens and substrate with electrode layers formed on their surfaces, eliminating the need for indium-tin oxide layers on the substrate and insulating layers, simplifying the assembly process and reducing thickness and weight by using a single-layer structure with a transparent adhesive layer for binding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple indium-tin oxide layers and insulating layers are used in conventional transparent capacitive touch panels, then the structural integrity and electrical insulation are improved, but the manufacturing complexity and cost increase significantly
Solution Approach 1:
The patent removes the insulating layer from the conventional multi-layer structure, extracting only the necessary components. By forming electrode patterns directly on the transparent substrate and using a single indium-tin oxide layer with conductive adhesive, the design eliminates redundant layers while maintaining electrical insulation through the substrate itself and proper electrode positioning.
Solution Approach 2:
The patent combines multiple functions into fewer layers. The transparent substrate serves both as the structural base and as the insulating medium. The conductive adhesive layer simultaneously provides electrical connection and acts as part of the electrode structure, merging functions that were previously separated into distinct layers.
2Reliability
If multiple indium-tin oxide layers and insulating layers are used in conventional transparent capacitive touch panels, then the electrical insulation is improved, but the manufacturing cost increases
Solution Approach 1:
The patent extracts and removes the separate insulating layer from the conventional structure. Electrical insulation is maintained through the transparent substrate itself and by positioning electrode patterns on opposite sides of the substrate, eliminating the need for an additional insulating layer and reducing material costs.
Solution Approach 2:
The patent uses conductive adhesive material that is less expensive than traditional indium-tin oxide layers. The conductive adhesive serves as both the connection medium and part of the electrode structure, replacing costly ITO materials while maintaining electrical functionality.
3Reliability
If a dual-layer structure with multiple ITO layers is used, then the touch panel functionality is improved, but the thickness and weight increase
Solution Approach 1:
The patent removes redundant layers including the second ITO layer and separate insulating layer, keeping only the essential components: transparent substrate, electrode patterns on both sides, and conductive adhesive. This extraction reduces thickness and weight while preserving capacitive touch functionality through the remaining optimized structure.
4Stability of the object's composition
If conventional multi-layer assembly is used, then the structural stability is improved, but the assembly process becomes more complex and time-consuming
Solution Approach 1:
The patent merges multiple assembly steps into a simplified process. The transparent substrate with pre-formed electrode patterns is directly bonded to the cover lens using conductive adhesive, eliminating separate steps for applying insulating layers, forming multiple ITO layers, and assembling complex multi-component structures. This reduces assembly time and improves productivity.
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 manufacturing process, enhances yield, reduces costs, and results in a thinner, lighter touch panel with improved durability and reduced complexity in production.
Implementation Method 1
a transparent adhesive layer; the transparent adhesive layer is used to bind the first transparent electrode layer and the second transparent electrode layer so as to combine the transparent cover lens and the transparent substrate
Data Source
AI summary
A transparent capacitive touch panel comprising a transparent substrate, a transparent cover lens and a transparent adhesive layer is provided, wherein a first transparent electrode layer and a second transparent electrode layer are disposed on the transparent cover lens and the transparent substrate respectively. The transparent adhesive layer is used to bind the first transparent electrode layer and second transparent electrode layer in order to combine the transparent cover lens and the transparent substrate disposed in parallel. Thereby, the manufacturing process of the transparent capacitive touch panel is simplified, and the manufacturing cost of the same is lowered.