Conductive Pattern Laminate Using Substrate Topography
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Solution Overview
Problem
Current touch screen technologies face challenges in forming conductive patterns without the need for additional patterning processes, alignment, and index matching layers, which increase complexity and costs, and can result in reduced yield and visibility issues.
Innovation Solution
A conductive pattern laminate is created using a substrate with concave or protrusion portions, where the conductive film is formed on the entire surface and electrically disconnected by the height differences, eliminating the need for separate patterning and alignment, and incorporating an additional conductive layer in the decoration region for improved conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional patterning processes are used to form conductive patterns, then precise alignment and pattern definition are achieved, but manufacturing complexity and costs increase
Solution Approach 1:
The substrate surface provides self-patterning through its inherent concave/convex structure. When conductive material is deposited on the entire substrate surface, the material automatically conforms to the surface topology, creating electrically disconnected conductive regions in convex areas while maintaining electrical connection in concave areas. This eliminates the need for external patterning processes, alignment procedures, and index matching layers, thereby reducing manufacturing complexity while maintaining pattern definition.
2Reliability
If multiple separate layers are used for screen and wiring parts, then functional separation is achieved, but material costs and manufacturing steps increase
Solution Approach 1:
The substrate integrates multiple functions into a single component. The concave/convex surface structure simultaneously serves as the substrate support, the patterning template, and the electrical isolation mechanism. By depositing conductive material on the entire substrate surface, both screen regions (in concave areas) and wiring regions (in convex areas) are formed in a single step, eliminating the need for separate layers for different functions and reducing material consumption.
3Illumination intensity
If index matching layers are added to improve visibility, then optical properties are enhanced, but manufacturing complexity and costs increase
Solution Approach 1:
The substrate surface topology automatically provides optical functionality. The concave/convex structure creates natural light scattering and reflection patterns that enhance visibility without requiring additional index matching layers. The surface geometry itself serves as the optical element, eliminating the need for separate optical compensation layers and simplifying the overall structure.
Data Source
AI summary
The present application provides a conductive pattern laminate including: a substrate having concave portions or protrusion portions on an upper surface thereof; and a conductive film provided on an upper surface of concave portions or protrusion portions of the substrate and on a portion in which no concave portions or protrusion portions are present on the upper surface of the substrate, in which the conductive film provided on the upper surface of concave portions or protrusion portions of the substrate and the conductive film provided on the portion in which no concave portions or protrusion portions are present on the upper surface of the substrate are electrically disconnected from each other, a method for manufacturing the same, and an electronic apparatus including the laminate.