Touch Screen Sensor Antenna Electrode Dummy Region
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Solution Overview
Problem
Electronic devices with metal housings pose challenges for antenna performance due to signal shielding, making it difficult to achieve effective wireless communication.
Innovation Solution
A touch screen sensor with an antenna electrode formed in a dummy region between touch sensing electrodes, minimizing visibility degradation and enabling both touch sensing and antenna functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal housing is used for the electronic device, then the structural strength and appearance are improved, but the antenna performance deteriorates due to signal shielding
Solution Approach 1:
The touch screen sensor is divided into multiple regions: active sensing regions with sensing electrodes and dummy regions without sensing electrodes. The antenna electrode is specifically placed in the dummy regions, segmenting the sensor structure to accommodate both touch sensing and antenna functions without interference
Solution Approach 2:
The patent combines multiple functions into a single touch screen sensor component: touch sensing (through sensing electrodes), antenna function (through antenna electrode in dummy regions), and visual appearance (through transparent material). This merging eliminates the need for separate antenna components that would interfere with the metal housing
2Adaptability or versatility
If an antenna electrode is added to the touch screen sensor, then the antenna function is improved, but the manufacturing complexity increases
Solution Approach 1:
The touch screen sensor is designed as a multi-functional component that simultaneously provides touch sensing capability and antenna function. The sensing electrodes handle touch detection while the antenna electrode in dummy regions provides wireless communication, making the sensor universal and reducing overall device complexity
Solution Approach 2:
Different regions of the touch screen sensor have different properties: active regions contain sensing electrodes for touch detection, while dummy regions contain antenna electrodes for wireless communication. This local differentiation allows each region to serve its specific function without affecting other regions
3Reliability
If the antenna electrode is formed on the transparent substrate, then the antenna performance is improved, but the visibility of the touch screen may be degraded
Solution Approach 1:
The antenna electrode is placed specifically in the dummy regions where no sensing electrodes are present. Since dummy regions are already areas without active sensing elements, adding the antenna electrode there does not create additional visual interference, maintaining touch screen visibility while enabling antenna function
Data Source
AI summary
Disclosed are a touch screen sensor and a touch screen panel having the same, wherein an antenna electrode is formed in a dummy region between touch sensing electrodes, thereby preventing visibility degradation of the touch screen panel and performing touch sensing and an antenna function. The touch screen sensor includes: a base member made of a transparent material; an upper circuit pattern composed of multiple first sensing electrodes spaced apart from each other and formed on a first surface of the base member; a lower circuit pattern composed of multiple second sensing electrodes spaced apart from each other and formed on a second surface of the base member; and an antenna electrode formed on the first surface of the base member and formed in a dummy space defined between the multiple first sensing electrodes.