Display Panel Sensor Antenna Layout for 5G and Touch Integration
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Solution Overview
Problem
Display devices require multiple antennas for different frequency bands of wireless electromagnetic waves, leading to complex designs and additional processing steps for each antenna type, which complicates the integration of features like touch sensing and wireless communication.
Innovation Solution
A display panel with a conductive pattern acting as an antenna, integrated into the sensor peripheral area, allowing for the same material and layer as sensor electrodes, eliminating the need for additional processing and enabling flexible design by positioning the antenna area freely, such as in pad areas or through holes, without overlapping light-emitting elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple antennas are integrated into the display device for different frequency bands, then wireless communication functionality is improved, but device complexity increases due to complex designs and additional processing steps for each antenna type
Solution Approach 1:
The patent applies multi-functionality by making the conductive pattern serve dual purposes: it functions as both the electrode for the touch sensor and as the antenna for wireless communication. This eliminates the need for separate antenna structures, thereby reducing design complexity while maintaining support for multiple frequency bands through appropriate pattern design
Solution Approach 2:
The patent merges the touch sensor electrode and the antenna into a single integrated structure. The conductive pattern that forms the electrode of the touch sensor is simultaneously designed to function as an antenna element, combining two previously separate functions into one unified component, which simplifies the overall device structure
2Adaptability or versatility
If multiple antennas are integrated into the display device for different frequency bands, then wireless communication functionality is improved, but manufacturing complexity increases due to additional processing steps for each antenna type
Solution Approach 1:
The patent combines the formation of the touch sensor electrode and the antenna into a single manufacturing process step. By using the same conductive material layer and formation process for both the electrode and the antenna, the patent eliminates additional processing steps that would be required if separate antenna structures were implemented, thereby simplifying manufacturing
3Adaptability or versatility
If the antenna is positioned freely in pad areas or through holes without overlapping light-emitting elements, then design flexibility is improved, but antenna radiation stability may be affected by positioning constraints
Solution Approach 1:
The patent applies local quality by designing the conductive pattern with specific geometric characteristics in different regions. The antenna portion of the conductive pattern is designed with appropriate shape, size, and configuration in the pad area to ensure stable radiation characteristics, while the conductive pattern in the through hole region is designed to maintain electrical connectivity without compromising antenna performance
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 solution allows for stable radiation of electromagnetic waves for 5G mobile communications and RFID tags without passing through metal layers, enhancing design flexibility and reducing processing complexity while maintaining touch sensing functionality.
Implementation Method 1
stable radiation of electromagnetic waves for 5G mobile communications and RFID tags
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.