Flexible Display Antenna Orientation via Rotational Housing
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Solution Overview
Problem
Flexible information handling systems face challenges in managing the movement of housing portions with a flexible display, as sharp bends can damage the OLED film, and the folding mechanism often results in waviness, poor electrical/optical performance, and an awkward physical appearance, while also requiring robust structural materials that increase weight and thickness.
Innovation Solution
A system with rotationally coupled housing portions and a display frame structure that manages the fold radius of the OLED display film, using roller assemblies and biasing devices to minimize force on the film during rotation, and adaptable hinge structures like synchronized geared portions and dual-axis hinges to maintain the film's integrity and optimize space efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a folding mechanism is used to reduce housing size, then portability is improved, but the OLED film may be damaged by sharp bends
Solution Approach 1:
The housing is divided into multiple rotatable portions (first housing portion, second housing portion, third housing portion) connected by hinges, allowing the display to be folded into different configurations (tablet mode, tent mode, book mode) while maintaining adequate bend radius to protect the OLED film from damage
Solution Approach 2:
The patent employs a flexible OLED display film that can be bent without breaking, combined with a flexible support structure that maintains proper curvature during folding operations, enabling the display to adapt to different housing configurations while protecting the fragile OLED material
2Strength
If robust structural materials are used to support the folding mechanism, then structural strength is improved, but weight and thickness increase
Solution Approach 1:
The patent replaces traditional rigid structural materials with flexible support structures including flexible circuits, flexible print circuits, and flexible substrates that provide the necessary structural strength for folding while being significantly lighter and thinner than conventional materials
Solution Approach 2:
The support structures are designed to be dynamic and adaptable, changing their rigidity and configuration based on the housing position (open, closed, intermediate angles), providing maximum strength only when needed while minimizing weight during folding transitions
3Adaptability or versatility
If the display is folded at various angles, then versatility is improved, but waviness and poor electrical/optical performance occur
Solution Approach 1:
The patent incorporates sensors (accelerometers, gyroscopes, Hall effect sensors) that detect the housing angle and display configuration, automatically adjusting electrical parameters such as touch sensitivity, backlight brightness, and refresh rate to optimize performance for each folding state (tablet mode, tent mode, book mode)
Solution Approach 2:
The system continuously monitors the physical state of the folded display through sensors and provides real-time feedback to the control circuitry, which adjusts electrical and optical parameters accordingly to maintain optimal performance across all folding configurations and prevent waviness-induced degradation
Data Source
AI summary
An information handling system having rotationally coupled housing portions supports a flexible display disposed across the housing portions with a hinge structure that manages flexible display curve radius in a folded configuration. Cylindrical spools integrated at opposing sides of a housing interface with a flexible display to rotate as the flexible display slides relative to the housing in response to housing rotation. Antenna disposed on the cylindrical spools change orientation as the housing rotates so that selection of different antenna provide desired radio signal characteristics.