Integrated Display Antenna Layout for Millimeter-Wave Sensing
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Solution Overview
Problem
Current display devices face challenges in integrating antenna modules for wireless communication without compromising the display area or requiring additional processing steps, especially for ultra-high frequency millimeter wave communication.
Innovation Solution
A display device design that incorporates an antenna electrode with a patch antenna shape, where the antenna electrode is disposed on one surface of the substrate in the non-display area, connected to a feed line through a hole, and shares material and processing with existing thin film transistor and light emitting element layers, allowing for proximity sensing and wireless communication without needing separate space or processing steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a separate antenna module is added for wireless communication, then wireless communication capability is improved, but device complexity and space requirements increase
Solution Approach 1:
The antenna electrode is merged with the existing display device structure by disposing it on the substrate in the non-display area. The antenna electrode shares the substrate and processing steps with the display device, eliminating the need for a separate antenna module and reducing overall device complexity.
Solution Approach 2:
The substrate serves multiple functions: it acts as both the display device substrate and the antenna substrate. By disposing the antenna electrode on the same substrate in the non-display area, the substrate becomes a multi-functional component that supports both display and wireless communication functions.
2Adaptability or versatility
If additional processing steps are added for antenna integration, then antenna functionality is improved, but manufacturing complexity increases
Solution Approach 1:
The antenna electrode is formed simultaneously with the existing display device layers during the same manufacturing process. By incorporating the antenna electrode formation into the existing processing sequence, no additional processing steps are required, and the antenna functionality is achieved through preliminary integration.
3Reliability
If antenna area is increased for better signal reception, then wireless communication performance is improved, but display area is reduced
Solution Approach 1:
The antenna electrode is disposed in the non-display area of the substrate, utilizing the peripheral region that would otherwise be unused. This local utilization of space allows the antenna to have sufficient area for signal reception without encroaching on the display area, as the non-display area provides adequate space for antenna functionality.
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 efficient transmission and reception of ultra-high frequency electromagnetic waves for proximity touch sensing and gesture detection, reducing the need for additional space and processing while maintaining display functionality.
Implementation Method 1
an antenna for transmitting and receiving electromagnetic waves for wireless communication
Implementation Method 2
a display device capable of proximity sensing such as gesture sensing including an antenna electrode
Data Source
AI summary
A display device includes a substrate including a display area in which an image is displayed, a non-display area disposed around the display area, and an antenna area protruding from the non-display area. The display device further includes an antenna electrode disposed on one surface of the substrate in the non-display area, a first electrode disposed on the one surface of the substrate in the antenna area and spaced apart from the antenna electrode, and a feed line disposed on another surface of the substrate, which opposes the one surface, in the antenna area. The antenna electrode is connected to the feed line through a hole penetrating the substrate.