Touch Sensor Assembly with Oxidation Prevention Film for Metal Panels
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing touch sensors face challenges in reliably detecting touch operations on metal panels due to oxidation issues and complexity in sealing structures, which increases manufacturing costs and decreases productivity.
Innovation Solution
A touch sensor assembly featuring a touch substrate with a piezo disk and oxidation prevention films coated on exposed surfaces, eliminating the need for a complicated sealing structure, and utilizing a flexible pressing part connected to the touch substrate for enhanced sensitivity and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sealing structure is formed to prevent oxidation of connectors, then reliability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent extracts the oxidation prevention function from a complex sealing structure and implements it through simple oxidation prevention films coated directly on the connector surfaces. This eliminates the need for complicated sealing mechanisms while maintaining protection against oxidation.
Solution Approach 2:
The patent uses thin oxidation prevention films as a simple, cost-effective alternative to durable but complex sealing structures. These films provide sufficient protection against oxidation without requiring the robustness of elaborate sealing mechanisms.
2Reliability
If a sealing structure is formed to prevent oxidation, then reliability is improved, but productivity decreases
Solution Approach 1:
The patent removes the time-consuming sealing structure formation process and replaces it with simple film coating operations. This extraction of the essential protection function allows for faster manufacturing while maintaining oxidation prevention.
Solution Approach 2:
The patent changes the protection approach from structural (sealing) to chemical/coating-based (oxidation prevention films). This parameter change enables simpler, faster manufacturing processes while achieving the same reliability goal.
3Reliability
If a sealing structure is formed to prevent oxidation, then reliability is improved, but manufacturing cost increases
Solution Approach 1:
The patent extracts the oxidation prevention essence from expensive sealing structures and implements it through inexpensive oxidation prevention films. This eliminates the need for costly sealing components and assembly processes.
Solution Approach 2:
The patent employs low-cost oxidation prevention films instead of expensive sealing structures. These films provide adequate protection at a fraction of the cost of complex sealing solutions.
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
The solution provides reliable touch operation sensing, prevents oxidation-related electrical failures, reduces manufacturing costs, and increases productivity by simplifying the assembly process while maintaining high sensitivity and durability.
Implementation Method 1
when metal connectors are exposed to air for a long time, oxidation may occur, resulting in an abnormal electrical connection of the connectors. In order to prevent such oxidation, a sealing structure may be formed such that the connectors are not exposed to air
Implementation Method 2
A touch sensor assembly may include a touch substrate 120, a piezo disk 130, and an oxidation prevention film 210
Data Source
AI summary
A touch sensor assembly includes a touch substrate attached to a rear surface of a panel having a touch point, a piezo disk having first and second poles stacked thereon, a pressing tab flexibly provided on the touch substrate, electrically connected to the first pole upon being in contact with the first pole, and electrically connected to a first wire provided on the touch substrate, a fixing surface electrically connected to the second pole while supporting the second pole such that the piezo disk is fixed to the rear surface of the touch substrate and electrically connected to a second wire provided on the touch substrate, and an oxidation prevention film coated on at least one of the first pole or the second pole of the piezo disk and the pressing part or the fixing surface of the touch substrate and made of a conductive material.