Double-Layer Electrode Device Preventing Conductive Connection Breakage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional touch panels face issues with broken conductive connecting portions at the sidewalls of insulating blocks, leading to low yield and difficulty in forming thick electrode layers with efficient material usage.
Innovation Solution
A double-layer electrode device is proposed, comprising a transparent substrate with an electrode bottom layer and an electrode top layer, where insulating blocks are formed on conductive connecting portions, preventing breakage and allowing for a thicker electrode with lower resistance and reduced material waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a thick insulating block is used to electrically connect electrode lines, then insulation performance is improved, but the conductive connecting portion at the sidewall develops a large slope that causes breakage and lowers yield
Solution Approach 1:
The patent transitions from a single-layer electrode structure to a double-layer electrode structure. The first electrode layer forms conductive connecting portions with small slopes, and the second electrode layer is formed afterward to complete the electrode pattern. This dimensional change in the electrode structure allows the conductive connecting portions to maintain small slopes while still providing electrical connection across the insulating block, preventing breakage and improving yield.
2Strength
If the electrode layer is made thicker to prevent breakage, then structural strength is improved, but material consumption increases and manufacturing complexity increases
Solution Approach 1:
The electrode layer is segmented into two separate layers: a first electrode layer and a second electrode layer. The first electrode layer contains the conductive connecting portions that require small slopes for integrity, while the second electrode layer is formed afterward to complete the electrode pattern. This segmentation allows each layer to be optimized for its specific function, preventing material waste while maintaining structural strength.
Solution Approach 2:
The first electrode layer is formed in advance with the conductive connecting portions having small slopes, before the insulating block is fully processed. This preliminary action ensures that the critical conductive connecting portions are already in place with the correct geometry, preventing breakage and reducing the need for additional material to compensate for potential defects.
3Strength
If the electrode layer is made thicker to prevent breakage, then structural strength is improved, but manufacturing process complexity increases
Solution Approach 1:
The electrode layer is divided into two separate formation steps: first electrode layer formation and second electrode layer formation. This segmentation allows each layer to be processed independently with optimized parameters, simplifying the overall manufacturing process while achieving the required structural strength through the combined thickness of both layers.
Data Source
AI summary
A double-layer electrode device includes an electrode bottom layer formed on a transparent substrate, and an electrode top layer formed on the electrode bottom layer. First electrodes of the electrode bottom layer are separated from each other, and second electrodes of the electrode bottom layer are connected via second conductive connecting portions. An insulating block is formed on the second conductive connecting portion. Second electrodes of the electrode top layer are separated from each other, and first electrodes of the electrode top layer are connected via first conductive connecting portions, which are disposed cross the insulating blocks, respectively.