Touch Panel Adhesive Bearing Layer Thickness Reduction
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Solution Overview
Problem
Current capacitive touch panels require multiple thick substrates to bear loads, leading to increased thickness, and existing methods face challenges in reducing panel thickness while maintaining adhesive force and protecting sensing lines during fabrication.
Innovation Solution
The touch panel design features patterned sensing lines directly formed on an adhesive bearing layer, eliminating the need for additional adhesive layers and enhancing adhesion, with the adhesive layer acting as both a substrate and a protective layer for the sensing lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If multiple thick substrates are used to bear loads, then the load bearing capacity is improved, but the total thickness of the touch panel increases
Solution Approach 1:
The patent combines the adhesive layer and bearing substrate functions into a single integrated adhesive bearing layer. This layer simultaneously provides the adhesive force needed to bond touch panel components and the mechanical strength to bear loads, eliminating the need for separate thick bearing substrates and reducing overall panel thickness while maintaining load bearing capacity.
Solution Approach 2:
The adhesive bearing layer performs multiple functions: it acts as an adhesive to bond the cover plate to the lower substrate, serves as a bearing substrate to support sensing lines, and provides mechanical strength for load bearing. This multi-functional design eliminates the need for additional dedicated bearing substrates, reducing panel thickness while maintaining structural integrity.
2Reliability
If sensing lines are formed on a separate substrate, then the sensing lines are protected, but additional adhesive layers are required increasing process complexity
Solution Approach 1:
The patent merges the adhesive layer and bearing substrate into a single adhesive bearing layer on which sensing lines are directly formed. This integration eliminates the need for separate adhesive layers between the substrate and sensing lines, simplifying the fabrication process while maintaining sensing line protection through the integrated layer's structural support and adhesive properties.
3Strength
If the number of bearing substrates is increased to fulfill load bearing requirements, then the load bearing capacity is improved, but the total thickness of the touch panel is thickened
Solution Approach 1:
The patent consolidates multiple bearing substrate functions into a single adhesive bearing layer that provides sufficient mechanical strength for load bearing. This integration eliminates the need for stacking multiple thick substrates, achieving load bearing requirements with a single thinner layer and reducing overall panel thickness.
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 approach simplifies the fabrication process, reduces panel thickness, enhances production yield, and reduces costs while maintaining the integrity of the sensing lines, resulting in a thinner, lighter, and more adaptable touch panel.
Implementation Method 1
a first adhesive component adhered underneath the cover plate and including a plurality of first patterned sensing lines; and a second adhesive component adhered underneath the first adhesive component
Data Source
AI summary
A touch panel includes a cover plate, a first adhesive component, and a second adhesive component. The first adhesive component which is adhered underneath the cover plate, includes a plurality of first pattered sensing lines. The second adhesive component which is adhered underneath the first adhesive component, includes a plurality of second pattered sensing lines. The first pattered sensing lines and second pattered sensing lines are electrically insulated from each other.