Touch Panel Baking Method for Oxidation Prevention
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Solution Overview
Problem
Conventional capacitive touch panels face instability in resistance values due to oxidation and corrosion of sensing electrodes during the manufacturing process, affecting the accuracy of touch position recognition.
Innovation Solution
Simultaneously baking the sensing electrode layer and a protective layer that covers it, preventing exposure to air and oxidation, while also reducing the number of baking processes required.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the sensing electrode layer is disposed without a protective layer covering it during manufacturing, then the manufacturing process is simpler, but the sensing electrode layer is easily oxidized by air during baking process, leading to resistance value variation
Solution Approach 1:
The protective layer is disposed to cover the sensing electrode layer before the baking process. This preliminary protective action prevents the sensing electrode layer from being oxidized by air during the subsequent baking step, while still allowing the manufacturing process to remain relatively simple through a single integrated baking operation.
2Productivity
If the sensing electrode layer is exposed to air during baking process, then the baking process can be performed without additional protective measures, but the sensing electrode layer is easily oxidized, affecting touch position recognition accuracy
Solution Approach 1:
The protective layer is disposed to cover the sensing electrode layer before baking. This allows the baking process to proceed efficiently without requiring separate protective measures during baking, while simultaneously preventing oxidation that would affect touch position recognition accuracy.
Solution Approach 2:
The protective layer acts as an intermediary between the sensing electrode layer and the air environment during baking. It allows the baking process to occur while blocking oxygen from reaching and oxidizing the sensing electrode layer, thus maintaining measurement precision.
3Reliability
If separate baking steps are used for sensing electrode layer and protective layer, then each layer can be baked independently, but the manufacturing process becomes more complex and time-consuming
Solution Approach 1:
The baking process for the sensing electrode layer and the protective layer is merged into a single simultaneous baking step. This combining approach reduces the number of baking steps and simplifies the manufacturing process while maintaining reliable curing quality for both layers through proper temperature and time control.
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 method stabilizes the resistance values of the sensing electrodes, enhancing the accuracy of touch detection and simplifying the manufacturing process by eliminating the need for separate baking steps.
Implementation Method 1
preventing the sensing electrode layer from being oxidized by air during the baking process
Implementation Method 2
baking the sensing electrode layer and the protective layer simultaneously
Data Source
AI summary
The present disclosure provides a manufacturing method of a touch panel that comprises of: simultaneously baking a sensing electrode layer and a protective layer that covers the sensing electrode layer. The present disclosure solves the issue of the sensing electrode layer being easily oxidized or corroded when baked alone. The present disclosure also simplifies the manufacturing process of the touch panel. The present disclosure also provides a touch panel on the basis of the manufacturing method.