Touch Sensor-Antenna Module Same-Level Patterning
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Solution Overview
Problem
Existing display devices with integrated antennas and touch sensors face signal interference and impedance issues due to mutual signal disturbance, leading to suboptimal antenna performance and increased process complexity.
Innovation Solution
A touch sensor-antenna module is designed with antenna patterns and touch sensor electrodes at the same level on a substrate, where antenna patterns are arranged in a peripheral region to avoid trace areas, reducing signal interference and allowing for improved radiation directivity and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If antenna and touch sensor are integrated in one display device, then communication and touch input functions are combined, but signal interference and impedance disturbance occur leading to suboptimal antenna performance
Solution Approach 1:
The patent divides the display device into distinct functional regions: a first region for the antenna and a second region for the touch sensor. This spatial segmentation prevents signal interference between the antenna and touch sensor while maintaining both functions in the same device, thus resolving the contradiction between integrated functionality and signal quality.
2Manufacturing precision
If antenna patterns and touch sensor electrodes are formed using repeated patterning processes, then fine dimensional electrodes are achieved, but process complexity increases
Solution Approach 1:
The patent combines the antenna pattern formation and touch sensor electrode formation into a single patterning process. By designing the antenna and touch sensor electrodes to be formed simultaneously in the same process step, the patent achieves fine dimensional precision while eliminating the complexity of repeated patterning processes.
Data Source
AI summary
A touch sensor-antenna module according to exemplary embodiments of the present invention includes a substrate layer, a touch sensor electrode layer disposed on a central portion of an upper surface of the substrate layer, and antenna patterns disposed on a peripheral portion of the upper surface of the substrate layer at the same level as that of the touch sensor electrode layer. Mutual interference between the touch sensor electrode layer and the antenna pattern may be reduced to improve signal reliability and process efficiency.