Touch Display Device Ring-Shaped Metal Bezel Shielding
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Solution Overview
Problem
Traditional touch panels have thickness, process, and cost issues due to the use of decoration layers that increase the size of the bezel region, which is not efficiently addressed by existing technologies.
Innovation Solution
A touch display device design incorporating a ring-shaped metal layer as a decoration layer, which reduces the overall thickness, process, and cost by using a transparent substrate with conductive traces, insulation, and a polarizer, along with an optical adhesive and cover, where the ring-shaped metal layer is formed directly over the conductive traces and serves as a grounding trace, reducing the bezel region area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a traditional decoration layer is used to shield conductive traces in the bezel region, then the shielding function is achieved, but the overall thickness, process complexity, and cost of the touch panel increase
Solution Approach 1:
The patent merges the decoration layer and grounding trace into a single integrated structure. The ring-shaped metal layer simultaneously serves as both the decoration layer for shielding conductive traces and as the grounding trace for electrical connection, eliminating the need for separate layers and reducing process complexity
Solution Approach 2:
The ring-shaped metal layer performs multiple functions: it acts as a decoration layer to shield conductive traces, serves as a grounding trace for electrical connection, and provides structural support. This multi-functionality reduces the number of separate components needed in the touch panel
2Object-affected harmful factors
If a traditional decoration layer is used to shield conductive traces in the bezel region, then the shielding function is achieved, but the overall thickness of the touch panel increases
Solution Approach 1:
The decoration layer and grounding trace are merged into a single ring-shaped metal layer structure, eliminating the need for multiple stacked layers and thereby reducing the overall thickness of the touch panel while maintaining the shielding function
3Object-affected harmful factors
If a traditional decoration layer is used to shield conductive traces in the bezel region, then the shielding function is achieved, but the cost of the touch panel increases
Solution Approach 1:
The patent combines the decoration layer and grounding trace into a single integrated ring-shaped metal layer, reducing the number of manufacturing steps and materials required, which directly lowers the overall manufacturing cost while maintaining the shielding function
Solution Approach 2:
The ring-shaped metal layer serves multiple purposes including shielding, grounding, and structural support, eliminating the need for separate dedicated components and thereby reducing material costs and manufacturing complexity
Data Source
AI summary
A touch display device includes a transparent substrate, a first transparent touch layer, a plurality of first conductive traces, a ring-shaped transparent insulation layer, a ring-shaped metal layer, a polarizer, a first optical adhesive layer, and a transparent cover. The first transparent touch layer is arranged on the transparent substrate, the first conductive traces are arranged on the bezel region of the transparent substrate, the ring-shaped transparent insulation layer covers the first conductive traces, and the ring-shaped metal layer is arranged on the ring-shaped transparent insulation layer. The polarizer is arranged on the transparent substrate and the ring-shaped metal layer to cover the first transparent touch layer. The first optical adhesive layer and the transparent cover are sequentially arranged on the polarizer.