OGS Touch Screen Bridge Structure Reducing Visibility
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Solution Overview
Problem
In one-glass-solution (OGS) touch screen technology, the visibility of the bridge location due to differences in light transmission and reflection at transparent electrodes and insulating layers affects the display effect, making the bridge structure noticeable and impacting the overall display quality.
Innovation Solution
A substrate bridge structure comprising one insulating layer and two transparent electrodes, where the second transparent electrode is formed on the insulating layer and maintains electrical connection with sub-electrodes, reducing redundant insulating layers and ensuring identical light transmission and reflection effects, thereby minimizing visibility of the bridge structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple insulating layers are used in the bridge structure, then electrical insulation is improved, but the visibility of the bridge structure increases due to differences in light transmission and reflection
Solution Approach 1:
The patent applies the color changes principle by making the insulating layer have the same optical characteristics (transparency and reflectivity) as the transparent electrode. This is achieved by using materials with matching refractive indices and optical properties, causing the insulating layer to become optically invisible and eliminating the visible bridge structure while maintaining electrical insulation functionality.
2Productivity
If redundant insulating layers are eliminated, then the manufacturing process is simplified and production efficiency is improved, but electrical insulation may be compromised
Solution Approach 1:
The patent applies the merging principle by combining the insulating layer with the transparent electrode in terms of optical characteristics. The insulating layer is designed to have identical optical properties to the transparent electrode, merging their visual appearance while maintaining functional separation. This eliminates the need for multiple distinct insulating layers, simplifying the manufacturing process while ensuring adequate electrical insulation through the optimized single-layer structure.
3Reliability
If the bridge structure is made more visible to ensure electrical connection, then electrical connectivity is improved, but the display effect deteriorates due to noticeable bridge locations
Solution Approach 1:
The patent applies color changes by matching the optical properties of the insulating layer to the transparent electrode, making the bridge structure optically invisible. This allows the bridge to maintain its electrical connectivity function while eliminating visual disruption to the display, as the bridge structure blends seamlessly with the surrounding transparent electrode material.
Data Source
AI summary
A one-glass-solution (OGS) touch screen substrate bridge structure and its manufacturing method, an OGS touch screen and its manufacturing method as well as a display device. The OGS touch screen substrate bridge structure includes: one insulating layer and two layers of transparent electrodes provided on the substrate, the two layers of transparent electrodes are the first transparent electrode and the second transparent electrode, the insulating layer is provided on the first transparent electrode, and the second transparent electrode is provided on the insulating layer, the first transparent electrode includes several sub-electrodes arranged at a certain spacing from each other, the second transparent electrode keeps the sub-electrodes in electrical connection. In the above, by forming the bridge structure with one insulating layer and two layers of transparent electrodes, it is possible to avoid the provision of redundant insulating layer, thus decrease the possibility that the bridge structure become visible, improving the display effect of a display device.