Bendable OLED Display Hinge Mechanism for Viewing Angle Optimization
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Solution Overview
Problem
Portable information handling systems face challenges in adapting display orientation to maintain consistent user viewing angles, especially with larger peripheral displays that can vary in appearance from center to edges.
Innovation Solution
A portable information handling system with a bendable OLED display that transitions between planar and curved configurations using an arrangement of hinges, allowing the display to curve about a vertical axis, ensuring consistent viewing angles and minimizing risk of damage during transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a large peripheral display is used to increase display surface area, then information presentation capability is improved, but viewing angle consistency deteriorates from center to edges
Solution Approach 1:
The display is curved about a vertical axis perpendicular to the horizontal hinge axis, transforming the flat display surface into a curved one. This curvature allows the display to maintain consistent viewing angles from center to edges by orienting pixels perpendicular to the viewing direction, resolving the viewing angle inconsistency problem while preserving the large display area
Solution Approach 2:
The display curvature is made dynamic and adjustable through the hinge mechanism. The display can transition between different curvature states (flat when closed, curved when open) and the curvature angle can be adjusted to optimize viewing angles for different user positions, making the system adaptable to various usage scenarios
2Ease of manufacture
If a bendable display is implemented to improve viewing angles, then viewing angle consistency is improved, but device complexity increases due to additional hinge arrangements
Solution Approach 1:
The hinge assembly serves multiple functions simultaneously: it enables the display to curve about a vertical axis for viewing angle optimization, allows rotation between open and closed positions, and provides structural support for the bendable display. This multi-functionality reduces the need for separate mechanisms, thereby managing complexity while achieving viewing angle consistency
Solution Approach 2:
The curvature mechanism and rotation mechanism are merged into a single hinge assembly. The first hinge enables curvature about a vertical axis while the second hinge enables rotation about a horizontal axis, and both functions are integrated in one component rather than separate mechanisms, reducing overall system complexity
3Adaptability or versatility
If the display is made bendable to adapt to housing shape changes, then adaptability is improved, but risk of display damage increases during bending transitions
Solution Approach 1:
The system provides controlled, gradual bending transitions through the hinge mechanism rather than abrupt folding. The curvature develops progressively as the hinge rotates, preventing sudden stress concentrations that could damage the display. The housing structure is also designed to accommodate and cushion the bending motion, reducing damage risk
Solution Approach 2:
The display curvature is dynamic and adjusts gradually with hinge rotation. Rather than forcing a rigid fold, the display smoothly transitions through intermediate curvature states, distributing mechanical stress over time and space. This dynamic adaptation reduces peak stresses and prevents display damage while maintaining adaptability to housing shape changes
4Volume of moving object
If the housing is closed to minimize footprint for portability, then mobility is improved, but display viewing capability is lost
Solution Approach 1:
The display curvature and orientation are dynamic and automatically adjust with hinge rotation. When the housing opens, the display curves and orients itself for optimal viewing. When closed, it flattens and aligns with the housing surface. This dynamic behavior allows the display to provide viewing capability when needed while maintaining minimal footprint when stored
Solution Approach 2:
The hinge assembly enables both the closing function for portability and the display curvature for viewing capability. A single mechanism achieves both objectives: rotating the hinge closes the housing to minimize footprint while simultaneously curving the display to enable viewing, making the system portable when closed and viewable when open
Data Source
AI summary
A curved display integrates in a portable information handling system housing to present visual images to an end user about an arc for improved viewing angle. The portable information handling system rotates the housing from an open position that exposes the display in a curved configuration to a closed position that brings the display against a main housing portion with the display transitioned from the curved to a planar configuration for a low profile storage position. Display curve is managed with a curved support frame that bends to a planar form, a pair of perpendicular-axis hinges that rotate opposing housings about a horizontal axis and manage display curve about a vertical axis, and a dual axis hinge with a sliding bracket that adjusts for greater housing spacing in the curved configuration.