Touch Panel Metal Bridge Reflection Reduction
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Solution Overview
Problem
The reflective effect caused by long metal bridges in touch display panels affects the visual quality due to external light, as they reflect light and distort images.
Innovation Solution
A touch panel design featuring transparent conductive connection portions with metal bridges arranged in spacing channels between second touch units, reducing the area of metal bridges and incorporating recessed and convex structures to maintain channel continuity and drive effect, while using materials like indium tin oxide or molybdenum for the connection and bridge units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal bridges are used to connect adjacent second touch units, then electrical conductivity is improved, but light reflection occurs causing image distortion and poor visual effect
Solution Approach 1:
The patent employs a composite material structure where metal bridges are combined with transparent conductive materials (such as ITO or IZO) to form a hybrid conductive layer. This composite approach allows the metal component to provide necessary electrical conductivity while the transparent conductive material reduces light reflection, thus resolving the contradiction between electrical performance and visual quality.
Solution Approach 2:
The patent applies different material properties to different regions of the connection structure. The metal bridges are positioned specifically where high conductivity is needed, while transparent conductive materials are applied in areas where light transmission is critical. This localized differentiation of material quality optimizes both electrical performance and visual effect in their respective zones.
2Reliability
If metal bridges are used to connect touch units, then channel continuity is improved, but the area of metal bridges increases causing stronger reflective effect
Solution Approach 1:
The patent segments the connection structure into multiple components: discrete metal bridges are separated and positioned only where absolutely necessary for electrical connection, rather than using continuous metal traces. This segmentation reduces the total metal bridge area and minimizes light reflection while maintaining channel continuity through the distributed arrangement of conductive elements.
Solution Approach 2:
The patent introduces transparent conductive materials as intermediary substances between metal bridges and the external environment. These intermediary materials serve as a bridge that maintains electrical connectivity while simultaneously reducing the reflective properties of the metal, thus allowing channel continuity without the full adverse effect of exposed metal surfaces.
3Object-affected harmful factors
If transparent conductive connection portions are used instead of metal bridges, then light reflection is reduced, but electrical conductivity decreases
Solution Approach 1:
The patent merges multiple conductive materials (metal and transparent conductive materials) into a unified connection structure. By combining the high conductivity of metal with the low reflectivity of transparent conductive materials in the same connection path, the structure achieves both reduced light reflection and maintained electrical conductivity that neither material could achieve alone.
Solution Approach 2:
The patent creates a composite conductive system where metal bridges and transparent conductive materials work together in a multi-layer or hybrid structure. This composite material approach leverages the strengths of both materials: the metal provides baseline conductivity while the transparent conductive material enhances light transmission and reduces reflection, achieving a balance that satisfies both requirements.
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 minimizes the reflective image of metal bridges under external light, enhancing display quality and ensuring channel continuity, thereby improving the overall performance of touch panels.
Implementation Method 1
the at least one bridge unit is arranged in a spacing channel formed between adjacent second touch units and comprises a transparent conductive connection portion and metal bridges
Implementation Method 2
when it is irradiated by the external hard light, the metal bridge may reflect light, which causes an image phenomenon and affects the visual effect
Data Source
AI summary
Exemplary embodiments of the disclosure relate to display technology, and more particularly to touch panels and display devices, so as to improve the problem in the prior art of reflective effect caused by a too long metal bridge. A transparent conductive connection portion is arranged in the bridge unit, and the connection portion is connected to the adjacent second touch units by the metal bridges connected at both ends of the connection portion. Through this structural improvement of integrating a plurality of parts, the area of the metal bridges in the bridge unit can be reduced, the reflective image of the metal bridges due to external hard light can be reduced, thereby improving the display quality of the touch panel.