Resistive Touch Panel with Variable Elasticity Glass
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Solution Overview
Problem
Conventional resistive touch panels lack the ability to differentiate touch sensitivity between regions, which can lead to accidental activation of machine tools due to uniform touch response, necessitating a solution to distinguish between light and heavy touches.
Innovation Solution
A resistive touch panel design featuring two resistive layers with spacer dots and a glass panel, where the glass panel has regions with materials of varying elasticity, allowing for differentiated touch sensitivity by altering the modulus of elasticity in specific areas to distinguish between light and heavy touches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If uniform touch sensitivity is provided across the entire touch panel, then ease of operation is improved, but reliability deteriorates due to accidental activation of machine tools
Solution Approach 1:
The glass panel incorporates regions with different elastic moduli: a first region with a first elastic modulus and a second region with a second elastic modulus that is higher than the first. This local variation in material properties creates different touch sensitivity characteristics in different areas, allowing critical regions to require heavier touches while other regions remain responsive to light touches, thereby preventing accidental activation while maintaining ease of operation
2Manufacturing precision
If the glass panel uses a single material with uniform elastic modulus, then manufacturing precision is improved, but adaptability deteriorates because touch sensitivity cannot be differentiated between regions
Solution Approach 1:
The glass panel is constructed as a composite structure combining different glass materials or treatments: a first region made of a material with a first elastic modulus and a second region made of a material with a second elastic modulus. This composite approach allows the panel to achieve both manufacturing precision through standardized material processes and adaptability through spatial variation in material properties, enabling differentiated touch sensitivity across regions
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
Enables the differentiation of touch sensitivity between regions, preventing accidental machine activation by requiring a stronger touch in critical areas while allowing light touches in other regions, enhancing operational safety and versatility.
Implementation Method 1
one side of the glass panel has at least one region including a material having a modulus of elasticity different from a modulus of elasticity of the glass panel
Data Source
AI summary
The invention provides a touch panel including: two resistive layers; a plurality of spacer dots disposed between the two resistive layers, the spacer dots spacing the two resistive layers apart from each other, the two resistive layers facing each other; and a glass panel bonded to an underside of one of the resistive layers to provide support, the one of the resistive layers positioned opposite from a touch surface, wherein one side of the glass panel has at least one region including a material having a modulus of elasticity different from a modulus of elasticity of the glass panel, the one side of the glass panel being adjacent to the one of the resistive layers. With this configuration, the touch sensitivity in the at least one region is differentiated from that of the remaining regions.