Flat Surface Touch Device Color-Matched Isolation Layer
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Solution Overview
Problem
Conventional touch devices fail to achieve a full-planar visual effect due to the visibility of conductive wires at the edges, which are not masked by highly-transparent optical adhesives or front bezels, disrupting the uniform appearance.
Innovation Solution
A flat surface touch device design that incorporates a transparent conductive film with a first electrode and isolation layer of the same color, hiding the second electrode from view by using a same-colored isolation layer, eliminating the need for optical adhesives and front bezels, and utilizing materials like metal oxides and transparent conductive polymers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If highly-transparent optical adhesives and front bezels are used to bind decoration plate to touch panel, then full-planar visual effect can be achieved, but conductive wires at edges remain visible and disrupt uniform appearance
Solution Approach 1:
The patent applies color matching between the isolation layer and conductive wires to make the wires invisible. The isolation layer is configured with the same color as the conductive wires, creating visual camouflage that eliminates the disruptive appearance of conductive elements at the edges while maintaining the full-planar visual effect.
Solution Approach 2:
The isolation layer serves as an intermediary element between the conductive wires and the external environment. This intermediate layer with matching color acts as a visual mediator that conceals the conductive wires, allowing them to perform their electrical function while remaining aesthetically invisible to users.
2Illumination intensity
If conventional transparent base plates are used, then high transparency is achieved, but conductive wires and isolation layers become visible to users
Solution Approach 1:
The patent utilizes color matching between the isolation layer and conductive wires to achieve visual uniformity. By configuring the isolation layer with the same color as the conductive wires, the transparent base plate maintains its high transparency while the colored isolation layer camouflages the conductive elements, creating a uniform appearance that eliminates visual disruption.
3Shape
If multiple layers with different colors are used to hide conductive wires, then visual effect improves, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent merges the isolation layer's dual functions: electrical isolation and visual camouflage. By configuring the isolation layer with the same color as the conductive wires, a single layer performs both the electrical isolation function and the aesthetic camouflage function, eliminating the need for separate masking layers and reducing overall device complexity.
Solution Approach 2:
The isolation layer is designed with multi-functionality, serving both as an electrical insulator and as a visual camouflage element. This universal layer with matching color performs multiple functions simultaneously, reducing the total number of components needed and simplifying the overall device structure while maintaining the full-planar visual effect.
Data Source
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AI summary
An electrode (310) and an isolation layer (340) of a touch device (300,400) have the same color, so that a user of the touch device (300,400) perceives a good visual effect without having to employ expensive optical adhesive and decorative films in the touch device (300,400). The front bezel design used in conventional touch devices can thus be abandoned. Further, simpler fabrication, higher yield rate, and lower cost are also achieved.