Touch Panel Bridge Structure Reflectivity Reduction
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Solution Overview
Problem
The existing touch panels suffer from increased reflectivity at the intersections of bridge structures, leading to visually obtrusive bright spots and reduced imaging quality due to the thickness reduction of the bridge structure, which affects the overall performance of the touch display device.
Innovation Solution
The touch panel design incorporates overlapping bridge structures and an insulating layer with corresponding openings, reducing the reflectivity of the overlapping portion per unit area, thereby minimizing the visual impact and maintaining effective electrical signal transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the thickness of the bridge structure is decreased to improve production capacity, then the manufacturing efficiency is improved, but the reflectivity of the bridge structure increases causing visually obtrusive bright spots
Solution Approach 1:
The bridge structure is divided into multiple segments with openings at different positions, breaking the continuous reflective surface into discrete segments. This segmentation reduces the overall reflectivity while maintaining the structural integrity and electrical connectivity functions of the bridge.
Solution Approach 2:
Openings are strategically positioned at specific locations on the bridge structure where they most effectively reduce reflectivity without compromising structural strength or electrical performance. The local modification of having openings rather than a solid structure creates the desired optical property while preserving other critical functions.
2Object-affected harmful factors
If openings are added to reduce reflectivity, then the visual effect is improved, but the structural integrity and electrical signal transfer may be affected
Solution Approach 1:
The bridge structure incorporates openings at specific locations that are optimized to reduce reflectivity while preserving electrical conductivity. The openings are positioned and sized to maintain sufficient material for electrical signal transfer while achieving the desired optical effect.
Solution Approach 2:
The bridge structure uses a composite design combining conductive materials with optical optimization, where the material composition and structure are engineered to simultaneously provide electrical conductivity through the openings while maintaining low reflectivity properties.
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 design enhances the visual effect of the touch panel by reducing the reflectivity difference between overlapping and non-overlapping areas, preventing obtrusiveness and maintaining the performance of electrical signal transfer, thus improving the imaging quality and reducing visual defects.
Implementation Method 1
layers of an overlapping portion of a first bridge structure, a second bridge structure, and an insulating layer are respectively provided with openings corresponding to each other, and therefore, the reflectivity of the overlapping portion per unit area is decreased
Data Source
AI summary
A touch panel includes a substrate, a first sensing series, a second sensing series, and an insulating layer. The first sensing series, disposed on the substrate along a first direction, includes first sensing pads and at least one first bridge structure. The first bridge structure is connected between two adjacent first sensing pads, and has a first opening. The second sensing series, disposed on the substrate along a second direction different from the first direction, includes second sensing pads and at least one second bridge structure. The second bridge structure crosses the first bridge structure, and is connected between two adjacent second sensing pads. A portion of the second bridge structure is located in the first opening. The insulating layer is disposed between the first bridge structure and the second bridge structure. A portion of the insulating layer extending into the first opening has a second opening.