Display Panel Antenna Layout for Compact Wireless and Gesture Sensing
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Solution Overview
Problem
Display devices face challenges in integrating antennas for wireless communication while maintaining optimal radiation performance and minimizing the need for additional space, especially when incorporating proximity sensing features like gesture recognition.
Innovation Solution
The display device incorporates an antenna electrode with a unique layout and configuration, including a feed line, first and second electrodes, and a stub, which are designed to minimize distances and widths in specific areas to enhance radiation performance and reduce interference, while allowing for a compact design that integrates proximity sensing capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an antenna is integrated into the display device, then wireless communication capability is added, but the device occupies more space and may interfere with display area
Solution Approach 1:
The antenna structure is merged with the existing display device structure by using the non-display area and antenna area as integration zones. The antenna electrode is disposed on the same substrate as the display elements, combining communication functionality with the display structure without requiring separate housing space.
Solution Approach 2:
The antenna area protrudes from the non-display area in a directional arrangement, utilizing spatial dimensionality to accommodate the antenna structure. This allows the antenna to extend beyond the main display plane while maintaining a compact overall footprint by strategic positioning in the antenna area.
2Area of stationary object
If antenna components are placed close together, then space is saved, but electromagnetic interference increases
Solution Approach 1:
Different regions of the antenna structure have optimized local characteristics: the feed line is spaced apart from the antenna electrode to reduce interference, while the first and second electrodes are positioned at specific distances from the feed line. The width of electrodes varies in different areas to optimize both space utilization and electromagnetic performance locally.
Solution Approach 2:
The feed line acts as an intermediary element between the signal source and the antenna electrode, with strategic spacing and positioning to mediate electromagnetic energy transfer while minimizing interference. The first and second electrodes serve as intermediary ground structures that manage electromagnetic fields in the radiation area.
3Reliability
If electrode widths are increased to improve radiation performance, then more space is required, but device compactness is reduced
Solution Approach 1:
The electrode widths are dynamically varied along their lengths rather than maintaining uniform dimensions. The first and second electrodes have widths that change from one end to the other, allowing optimization of radiation performance in critical areas while minimizing space occupation in less critical regions.
Solution Approach 2:
The geometric parameters of the electrodes (width, length, spacing) are optimized to specific values and gradients that balance radiation performance with space constraints. The distance between electrodes and the feed line, as well as electrode widths, are carefully controlled to achieve optimal electromagnetic performance within the available antenna area.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enhances the radiation performance of the antenna and reduces electromagnetic interference, enabling efficient wireless communication and proximity sensing without requiring additional space on the display panel.
Implementation Method 1
A display device may include an antenna that transmits and receives electromagnetic waves for wireless communication
Implementation Method 2
a display device that includes an antenna electrode and is capable of proximity sensing, such as gesture sensing
Data Source
AI summary
A display device includes a substrate that includes a display area that displays an image, a non-display area disposed around the display area, and an antenna area that protrudes from the non-display area, an antenna electrode disposed on one surface of the substrate in the non-display area, a feed line disposed on one surface of the substrate in the antenna area and spaced apart from the antenna electrode, a first electrode disposed on one surface of the substrate in the antenna area and the non-display area and disposed at one side of the feed line; and a second electrode disposed on one surface of the substrate in the antenna area and the non-display area and disposed on an other side of the feed line. A distance between the first electrode and the second electrode increases from one end of the feed line toward the antenna electrode.