Rollable Display Inner Frame and Guide Roller Mechanism
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Solution Overview
Problem
Conventional electronic devices with rollable display panels face issues where the display panel curls when unrolled, obstructing the user's view due to the lack of a stable inner frame that prevents rotation during rolling and unrolling, leading to a compromised user experience.
Innovation Solution
The electronic device incorporates a non-rotating inner frame within the outer frame, allowing various electronic components to be securely mounted, and utilizes guide rollers and a wind spring mechanism to maintain the display panel's flatness and stability during transitions between rolled and unrolled states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display panel is made rollable to enable compact storage and flexible display, then the device portability and display flexibility are improved, but the display panel curls when unrolled obstructing the user's view
Solution Approach 1:
A guide roller is introduced as an intermediary component between the display panel and the housing. The guide roller contacts the edge of the display panel and guides it along a predetermined path, preventing the panel from curling upward and obstructing the view. This mediator component enables the rollable function while eliminating the harmful curling effect.
Solution Approach 2:
The guide roller uses a curved cylindrical surface to interact with the edge of the display panel. This curved geometry allows the roller to smoothly guide the panel during rolling and unrolling operations, maintaining proper alignment and preventing unwanted curling that would obstruct the display.
2Adaptability or versatility
If a rotating roller mechanism is used to enable rolling and unrolling, then the display flexibility is improved, but electronic components mounted on the roller become misaligned or non-functional during rotation
Solution Approach 1:
The roller mechanism is divided into two distinct segments: an outer roller that rotates to enable rolling/unrolling, and an inner frame that remains stationary. Electronic components are mounted on the non-rotating inner frame, ensuring they remain properly aligned and functional while the outer roller provides the necessary rotational motion for display flexibility.
Solution Approach 2:
The inner frame acts as an intermediary structure between the rotating outer roller and the electronic components. It provides a stable, non-rotating mounting platform for sensitive components while being connected to the rotating mechanism, thus mediating between the need for rotation and the need for component stability.
3Device complexity
If the inner frame rotates with the roller during rolling and unrolling, then the rolling mechanism is simplified, but electronic parts mounted inside cannot remain stable and functional
Solution Approach 1:
The roller assembly is segmented into a rotating outer roller and a non-rotating inner frame. This segmentation allows the mechanism to achieve rolling functionality through the outer roller while maintaining component stability on the inner frame, resolving the contradiction between mechanism simplicity and component reliability.
Solution Approach 2:
Instead of having the inner frame rotate with the roller, the design inverts the approach by making the outer roller rotate while the inner frame remains stationary. This inversion ensures electronic components mounted on the inner frame remain stable and functional while still achieving the desired rolling capability.
Data Source
AI summary
An electronic device is disclosed. The electronic device includes a housing, a roller positioned inside the housing, a display panel rollable on the roller, and a guide roller positioned at an edge inside the housing. A state of the display panel with respect to the roller includes a first state in which the display panel is rolled on the roller and a second state in which the display panel is unrolled from the roller. The roller includes an outer frame which rotates when the display panel is rolled on or unrolled from the roller, and an inner frame positioned inside the outer frame and fixed to an inside of the housing regardless of rolling and unrolling the display panel.