Foldable Dual Display Device Hinge Mechanism
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Solution Overview
Problem
There is a need for larger displays in portable electronic devices that can be compactly designed and easily switched between configurations, while maintaining reliable operation and preventing noise issues, as existing technologies often compromise on size, weight, and display functionality.
Innovation Solution
A handheld electronic device with foldable parts that incorporate hinge mechanisms and dual displays, allowing for multiple configurations where the displays can function as both input and output elements, and switch between modes based on folding angles detected by sensors, enabling a continuous display experience and enhanced user interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the device uses a single large display, then the display size is increased, but the device cannot be folded into a compact configuration
Solution Approach 1:
The display system is divided into two separate display assemblies, each housed in a foldable part. When folded, the displays can be positioned to appear continuous from the front, providing a large display area while maintaining compact device volume through the folding mechanism.
Solution Approach 2:
The device utilizes the third dimension by folding parts relative to each other about a hinge axis. This allows the display area to be expanded in the folded state while the device volume is reduced when open, effectively resolving the contradiction between display size and compactness through spatial transformation.
2Volume of moving object
If the device uses foldable parts with hinge mechanisms, then the device achieves compact design, but noise and reliability issues arise
Solution Approach 1:
The hinge mechanism is extracted and positioned within the device structure such that it does not protrude outward. This internal positioning reduces mechanical exposure, minimizing noise generation during folding operations while maintaining the compact foldable design.
Solution Approach 2:
The device incorporates detection mechanisms that identify the folding state before operational modes are activated. This preliminary detection allows the system to prepare appropriate configurations in advance, preventing operational errors and enhancing reliability during transitions between folded and unfolded states.
3Reliability
If the device detects folding angles to switch modes, then operational reliability is improved, but device complexity increases
Solution Approach 1:
The device employs passive mechanical detection mechanisms that automatically sense folding angles through the natural movement of foldable parts. These self-activating detection systems eliminate the need for complex external sensors and control circuits, achieving reliable mode switching while minimizing added complexity.
4Area of stationary object
If dual displays are used in foldable parts, then larger display capabilities are achieved, but device weight increases
Solution Approach 1:
The two display assemblies are optically aligned when the device is folded, creating the perception of a single continuous large display. This merging approach provides the benefits of increased display area while using standard display components, thereby limiting weight increase compared to using a single large display panel.
Data Source
Figure 1~2(b)
Figure 3
AI summary
A foldable electronic apparatus comprising first and second parts being arranged to be foldable with respect to each other about a folding axis to define first and second apparatus folding configurations, wherein the first and second parts comprise respective first and second displays, wherein the device is arranged to have respective first and second operating modes according to whether the apparatus is in the first configuration or the second configuration, and wherein, in the first operating mode, the first display is arranged to act as a user input, and in the second operating mode, the first and second displays are arranged to act as displays.