Antenna-in-Package Layout for Bezel-Less mmWave Radar
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Modern mobile devices with bezel-less designs face challenges in integrating millimeter-wave radar systems without interfering with the display, as traditional glass coverings can block or distort radar signals, limiting the ability to maintain a large display size and effective user experience.
Innovation Solution
Incorporating a package with a radio-frequency integrated circuit (RFIC) and a laminate having multiple interconnect levels, including end-fire and patch antennas, which direct millimeter-wave radiation beams through the glass and frame, respectively, allowing for radar signal transmission and reception without being obstructed by the screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional glass coverings are used to protect the display, then the display is protected from impact, but the glass blocks or distorts radar signals, limiting radar system integration
Solution Approach 1:
The patent positions the radar antenna in the bezel region (peripheral dimension) rather than directly behind the display glass, allowing radar signals to transmit through frame openings without passing through the glass. This spatial repositioning resolves the contradiction by changing the dimensional relationship between the radar system and display glass.
2Area of stationary object
If bezel-less design is implemented to increase display size, then the display area is increased, but there is insufficient space to integrate radar systems without interfering with the display
Solution Approach 1:
The radar antenna is positioned in the bezel region at the periphery of the display rather than in the central display area, utilizing the peripheral dimension for radar integration while maintaining the full display area. This allows bezel-less design with large display size while still accommodating radar system integration.
Solution Approach 2:
The device is segmented into distinct functional regions: the display area for visual output and the bezel region for radar antenna placement. This segmentation allows each component to occupy its optimal space without interfering with the other, enabling both large display size and radar system integration.
3Area of stationary object
If the screen covers the entire front surface to maximize display area, then the display area is maximized, but the radar signals cannot pass through the screen without obstruction
Solution Approach 1:
The radar antenna is positioned in the bezel region rather than behind the display screen, changing the spatial dimension from central to peripheral. This allows the screen to cover the entire front surface for maximum display area while radar signals transmit through the bezel region without obstruction.
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 the integration of millimeter-wave radar systems in mobile devices with bezel-less designs, allowing for gesture recognition and target detection while maintaining a large display size and user experience by ensuring radar signals can travel through the glass without significant attenuation or distortion.
Implementation Method 1
an end-fire antenna configured to direct a first millimeter-wave radiation beam through the glass
Implementation Method 2
a patch antenna configured to direct a second millimeter-wave radiation beam through the frame
Data Source
AI summary
In an embodiment, a device includes: a first support structure having a main surface and an edge surface; a screen covering the first support structure and having a main surface and an edge surface; a glass covering the screen; a frame; and a package electrically coupled to the first support structure via a connector, the package including a radio-frequency integrated circuit (RFIC) and a laminate that has a plurality of interconnect levels including an end-fire antenna configured to direct a first millimeter-wave radiation beam through the glass, and a patch antenna configured to direct a second millimeter-wave radiation beam through the frame, where the screen partially covers the laminate.