Display Panel Sensor Electrode Antenna Layout for Multi-Band Wireless
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Solution Overview
Problem
Display devices require multiple antennas for different frequency bands of wireless electromagnetic waves, necessitating diverse conductive patterns that are challenging to integrate efficiently.
Innovation Solution
A display panel design incorporating a conductive pattern as an antenna, shared with sensor electrodes on the same layer, and additional conductive patterns for enhanced functionality, including a second conductive pattern for ground voltage, allowing for flexible antenna design without additional processing steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate antennas are integrated into the display device for different frequency bands, then wireless communication functionality is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The conductive pattern is designed to serve dual functions: as sensor electrodes for touch sensing and as antennas for wireless communication across multiple frequency bands. This multi-functionality eliminates the need for separate antenna structures, reducing device complexity while maintaining versatile wireless communication capabilities.
Solution Approach 2:
The patent merges the antenna function with the sensor electrode layer by forming conductive patterns that operate as both touch sensors and wireless communication antennas. This consolidation integrates multiple functionalities into a single structural layer, simplifying the overall device architecture.
2Adaptability or versatility
If diverse conductive patterns are created for different frequency bands, then antenna functionality is improved, but manufacturing process complexity increases
Solution Approach 1:
The patent achieves multi-frequency band antenna functionality by varying the geometric parameters of the conductive patterns (such as shape, size, and configuration) within the same sensor electrode layer. These parameter changes allow the same manufacturing process to produce antennas optimized for different frequency bands without requiring additional fabrication steps.
3Area of stationary object
If additional conductive patterns are added for antenna functionality, then antenna area is increased, but layer structure complexity increases
Solution Approach 1:
The conductive patterns in the sensor electrode layer serve dual purposes as both touch sensing electrodes and antenna elements. This multi-functionality allows the antenna area to be increased within the existing sensor electrode layer without adding new structural layers, thereby avoiding increased layer structure complexity.
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
Enables stable radiation of electromagnetic waves, increased antenna area, and efficient integration of antennas with sensor functionalities, reducing complexity and cost.
Implementation Method 1
the first conductive pattern may be an antenna... the first conductive pattern may be disposed in a sensor peripheral area adjacent to a first side of the sensor area, a sensor peripheral area adjacent to a second side of the sensor area, and a sensor peripheral area adjacent to a third side of the sensor area
Data Source
AI summary
A display device includes a display panel including a display layer having light-emitting elements on the substrate, and a sensor electrode layer on the display layer. The sensor electrode layer includes sensor electrodes in a sensor area, sensor lines electrically connected to the sensor electrodes and a first conductive pattern spaced apart from the sensor lines and sensor electrodes. The sensor lines and the first conductive pattern are in a sensor peripheral area adjacent to the sensor area. The first conductive pattern is an antenna.