Transfer-Printed Jumpers for Touch Device Electrode Formation
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Solution Overview
Problem
The existing manufacturing methods for touch devices often result in damage to previously formed layer structures during the formation of subsequent layers, leading to reduced yield and increased complexity, requiring expensive equipment and causing pollution.
Innovation Solution
The use of a transfer-printing process to form jumpers on touch devices, which reduces damage to the previously formed layers and simplifies the manufacturing process by eliminating the need for sputtering, exposure, and developing processes, thereby improving yield and production efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple exposure and developing processes are used to form electrodes and jumpers, then the manufacturing precision can be improved, but the previously formed layer structure may be damaged during subsequent processes
Solution Approach 1:
The patent divides the manufacturing process into distinct stages: first forming electrodes through exposure and developing, then forming jumpers through a separate sputtering process. This segmentation allows each process to be optimized independently, with the jumper formation process specifically designed not to damage previously formed electrode structures.
Solution Approach 2:
The patent performs preliminary protective actions by carefully designing the jumper formation process to occur after electrode formation, with specific process parameters controlled to prevent damage to the already-formed electrode layers. The insulating layer is also formed in advance to protect electrodes during subsequent jumper formation.
2Manufacturing precision
If traditional sputtering, exposure and developing processes are used, then the manufacturing precision is maintained, but the device complexity and production cost increase
Solution Approach 1:
The patent merges the electrode and jumper formation processes into a unified manufacturing flow where both are created using the same exposure and developing methodology. This consolidation reduces the need for multiple different process types and equipment, simplifying the overall manufacturing system while maintaining precision.
Solution Approach 2:
The patent employs a universal exposure and developing process that can form both electrodes and jumpers, eliminating the need for separate specialized processes for each component. This multi-functional approach reduces equipment requirements and simplifies process control.
3Manufacturing precision
If multiple vacuum sputtering, exposure and developing processes are performed, then the layer structure can be formed, but the production time and yield are reduced due to repeated processing
Solution Approach 1:
The patent performs preliminary formation of the insulating layer and electrodes with optimized process parameters, then proceeds to jumper formation in a single subsequent sputtering step. This preliminary action approach minimizes the need for repeated processing cycles, reducing total production time and improving yield.
Solution Approach 2:
The patent maintains continuous useful action by designing a manufacturing process where each step builds upon the previous one without requiring rework or repeated processing. The insulating layer formation, electrode formation, and jumper formation are executed in a continuous sequence, maximizing production efficiency.
Data Source
AI summary
A manufacturing method of a touch device is disclosed. A substrate having a viewing region is provided. A plurality of first sensing electrodes and a plurality of second sensing electrodes insulated from and in a staggered arrangement with the plurality of first sensing electrodes are formed on the substrate corresponding to the viewing region, wherein a plurality of jumper regions are defined between the adjacent second sensing electrodes. An insulating layer is formed on the plurality of first sensing electrodes and the plurality of second sensing electrodes. A plurality of jumpers is transfer-printed onto the insulating layer, wherein the plurality of jumpers is electrically connected to the adjacent second sensing electrodes and insulated from the first sensing electrodes by the insulating layer. A touch device is also disclosed.