Touch Device Transfer-Printed Electrodes Layer Integrity
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Solution Overview
Problem
The existing methods for manufacturing touch devices often result in damage to previously formed layer structures during the formation of subsequent layers, leading to reduced manufacturing yields and inefficiencies.
Innovation Solution
The use of a transfer-printing process to form sensing electrodes, which reduces or eliminates damage to previously formed layers and simplifies the manufacturing process by eliminating the need for expensive equipment and chemical solutions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional sputtering, exposure, and developing processes are used to form multiple electrode layers, then the touch device structure can be formed, but previously formed layer structures are damaged during subsequent layer formation, leading to reduced manufacturing yields
Solution Approach 1:
The patent introduces a transfer substrate as an intermediary carrier. The second electrode layer is first formed on this separate transfer substrate through sputtering, exposure, and developing processes, then transferred to the final touch device structure. This intermediary approach allows the formation of complex multi-layer structures without direct damage to previously formed layers, as each layer is formed and stabilized before being integrated with others.
Solution Approach 2:
The manufacturing process is segmented into distinct stages: forming the first electrode layer on the touch device substrate, separately forming the second electrode layer on a transfer substrate, and then transferring the second layer to the final structure. This segmentation allows each layer to be formed and stabilized independently, preventing the damage that occurs when attempting to form multiple layers sequentially in a single continuous process.
2Manufacturing precision
If multiple rounds of sputtering, exposure, and developing processes are performed to form multiple electrode layers, then the desired electrode structure is achieved, but the manufacturing process becomes complex and time-consuming
Solution Approach 1:
By using a transfer substrate as an intermediary, the patent simplifies the overall manufacturing process. Instead of performing multiple rounds of sputtering, exposure, and developing on the same substrate (which would require complex alignment and handling), the process is divided into forming layers on separate substrates and then transferring them. This reduces process complexity while maintaining the required electrode layer structure.
Solution Approach 2:
The second electrode layer is preliminarily formed on the transfer substrate before being transferred to the final touch device structure. This preliminary action allows the second layer to be fully formed and stabilized on a separate substrate, simplifying the overall process by avoiding the need to perform multiple complex processing steps on the same substrate in sequence.
3Manufacturing precision
If conventional manufacturing methods are used, then electrode layers can be formed, but expensive equipment and chemical solutions are required, increasing production costs and pollution
Solution Approach 1:
The transfer substrate acts as an intermediary that enables the use of simpler, more cost-effective manufacturing methods. By forming layers on separate substrates and then transferring them, the patent reduces the need for expensive in-situ processing equipment and complex chemical solutions, thereby lowering production costs and environmental impact while still achieving the required electrode layer formation.
Data Source
AI summary
A manufacturing method for forming a touch device is disclosed. A substrate having a viewing region is provided. A plurality of first sensing electrodes are spaced apart from each other on the substrate corresponding to the viewing region. An insulating layer is formed on the plurality of first sensing electrodes. A plurality of second sensing electrodes are transfer-printed onto the insulating layer, wherein the plurality of second sensing electrodes are spaced apart from each other, and wherein the plurality of first sensing electrodes are in a staggered arrangement with the plurality of second sensing electrodes and insulated from the plurality of second sensing electrodes by the insulating layer. A touch device is also disclosed.