Tablet Antenna Layout Using Screen Window and Metal Back Housing
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Solution Overview
Problem
Metal rear covers in tablet computers limit antenna radiation performance, and existing solutions either compromise aesthetics or increase costs and directionality.
Innovation Solution
An antenna design utilizing a non-display region on the screen and a camera module window on the rear housing for energy radiation, without requiring slots on the rear housing, using a metal back housing and screen substrate with ground and feed terminals connected by metal connectors to form a slot differential mode antenna.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a slot or window is cut in the metal rear cover to form radiation space, then antenna radiation performance is improved, but aesthetics of the device is severely affected
Solution Approach 1:
The patent introduces an intermediary structure (the screen assembly with non-display region) to mediate between the metal rear cover and the antenna radiation requirement. The non-display region of the screen acts as a mediator that provides radiation capability without requiring any modification to the metal rear cover, thus preserving its aesthetic appearance while enabling antenna function.
Solution Approach 2:
The patent uses the non-display region of the screen as a substitute or copy of the traditional radiation window. Instead of cutting a window in the metal rear cover, the design copies the radiation function to the screen's non-display region, which naturally exists and requires no additional structural modification.
2Shape
If a cavity antenna is used inside the terminal body, then aesthetics is maintained, but antenna radiation directionality becomes strong and costs increase
Solution Approach 1:
The patent extracts the antenna radiation function from the internal cavity structure and relocates it to the non-display region of the screen. This extraction eliminates the need for complex cavity structures and reduces directionality issues, while maintaining aesthetic appearance without requiring internal structural modifications.
Solution Approach 2:
The patent transitions the antenna radiation from a three-dimensional cavity structure to a two-dimensional planar structure on the screen's non-display region. This dimensional change simplifies the antenna structure, reduces directionality, and eliminates the need for complex internal cavity designs.
3Shape
If metal material is used for rear cover, then tactile and visual effects are improved, but antenna radiation performance is limited
Solution Approach 1:
The patent segments the radiation function from the metal rear cover and assigns it to a different component (the screen's non-display region). This segmentation allows the metal rear cover to maintain its aesthetic and tactile properties while the screen assembly provides the radiation function, resolving the conflict between material properties and antenna performance.
Solution Approach 2:
The patent makes the screen assembly multi-functional by having it serve both as a display component and as an antenna radiation element. The non-display region of the screen performs dual functions: maintaining the display structure and providing radiation capability, thus eliminating the need to compromise the metal rear cover's aesthetic properties.
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
Maintains device aesthetics, achieves low directivity, high efficiency, and is not affected by the camera module, while reducing costs.
Implementation Method 1
The antenna is disposed at a corner at which the second window is provided on the electronic device; or the antenna is disposed between a camera module window and the metal middle frame (a middle frame closest to the camera module window) on the electronic device. Energy radiation is performed by using the second window on the metal back housing in the electronic device and the first window right in front of a screen in the electronic device.
Data Source
AI summary
This application discloses an antenna and an electronic device, and relates to the field of antenna technologies. The antenna is used in the electronic device. The electronic device includes a metal back housing, a metal middle frame, and a metal screen substrate. A first window is formed between the screen substrate and the metal middle frame, and a second window is provided on the metal back housing. A first ground terminal, a feed terminal, and a second ground terminal are disposed on the screen substrate, the feed terminal is located between the first ground terminal and the second ground terminal, and projections of the first ground terminal, the feed terminal. The first ground terminal, the feed terminal, and the second ground terminal are connected to the metal back housing by using metal connectors respectively.