Rollable Display Antenna Beamforming for Form-Change Coverage
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Solution Overview
Problem
The challenge of maintaining effective beam coverage and communication quality in electronic devices with flexible displays, such as those with rollable structures, as changes in form affect antenna positions and beam patterns, leading to inconsistent signal transmission.
Innovation Solution
The implementation of a rollable display with first and second antennas and a processor that forms directional beams using a beam table adapted to the changing visible display region, ensuring adaptive beam coverage based on the device's form.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If a flexible display with rollable structure is used to improve portability and display size, then the display area and portability are improved, but the antenna positions change with form changes, causing beam coverage inconsistency
Solution Approach 1:
The patent implements dynamic beam table adjustment that adapts to the changing physical form of the electronic device. When the display transitions between rolled and unrolled states, the processor detects the form change and switches between a first beam table (for rolled state) and a second beam table (for unrolled state), ensuring beam coverage consistency despite antenna position changes
Solution Approach 2:
The patent changes the beamforming parameters by switching between different beam tables based on the display's physical state. Each beam table contains pre-configured beamforming parameters optimized for specific display configurations, allowing the system to maintain reliable communication by adjusting parameters according to the current form
2Reliability
If multiple antenna arrays are used to generate beam coverage in multiple directions, then the beam coverage and communication quality are improved, but the device complexity increases
Solution Approach 1:
The patent divides the antenna system into multiple antenna arrays (first antenna array, second antenna array, third antenna array) with distinct functions. The first array forms directional beams, the second provides omnidirectional coverage, and the third supplements coverage in specific directions. This segmentation allows the system to achieve comprehensive beam coverage while managing complexity through functional specialization
Solution Approach 2:
The patent makes the antenna system multi-functional by enabling different antenna arrays to serve different purposes within the same communication framework. The same antenna arrays can be used for both directional and omnidirectional beamforming, and the system can switch between different beam tables based on display configuration, providing universal coverage across multiple scenarios
Data Source
AI summary
An electronic device may comprise: a first cover; a second cover coupled to the first cover and configured to perform a sliding operation; a rollable display including a first display area visible in a rolled state and a second display area unrolled in response to the sliding operation of the second cover; a first antenna including a plurality of first antenna elements disposed in the first display area of the rollable display; a second antenna including a plurality of second antenna elements disposed in the second display area of the rollable display; and a processor. The processor may be configured to: form a plurality of directional beams using the first antenna based on a first beam table in a rolled state of the rollable display, and to form a plurality of directional beams using at least a part of the second antenna elements and the first antenna based on a second beam table based on the size of a visible area of the rollable display increasing from the rolled state.