In-Folding Hinge Rotation Limit for Flexible Display Protection
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Solution Overview
Problem
Existing in-folding type hinge structures for mobile communication terminals with flexible display panels fail to prevent damage by allowing excessive rotation and applying strong stress on folded parts, which can lead to product failure over time.
Innovation Solution
The proposed hinge structure includes a pair of main and auxiliary panels with a folding hinge unit that controls rotation, forming a gap between auxiliary panels to accommodate the flexible display panel, preventing it from rotating over 180 degrees and reducing stress by locating the folded part within this gap.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the flexible display panel is allowed to rotate freely in the in-folding hinge structure, then the folding operation is simple and easy to perform, but the panel may rotate over 180 degrees causing damage to the display panel
Solution Approach 1:
The patent applies preliminary anti-action by incorporating a rotation prevention mechanism that proactively prevents the flexible display panel from rotating beyond 180 degrees. The hinge structure includes mechanical stops or限位 devices that are pre-configured to block excessive rotation, thereby preventing damage before it can occur during normal folding operations
2Volume of moving object
If the auxiliary panels are positioned close together in the folded state, then the device has a compact form factor, but strong stress is applied to the folded part of the flexible display panel causing potential failure
Solution Approach 1:
The patent resolves this contradiction by introducing a gap dimension between the auxiliary panels in the folded state. Instead of positioning the panels directly adjacent to each other, a deliberate space gap is created that accommodates the folded flexible display panel, distributing the stress and preventing failure while maintaining overall device compactness through optimized spatial arrangement
3Adaptability or versatility
If the hinge structure allows full 360 degree rotation for versatile positioning, then the adaptability of the device is improved, but the flexible display panel is subjected to excessive stress and potential damage
Solution Approach 1:
The patent applies dynamics by implementing a controlled rotation range mechanism that dynamically limits the hinge to a safe rotation angle (less than 180 degrees). The hinge structure incorporates mechanical constraints that allow flexible positioning within the safe range while automatically preventing entry into the dangerous rotation zone, thus protecting the display panel from excessive stress
Data Source
AI summary
An in-folding type hinge structure having a flexible display panel installed thereon for a mobile communication terminal is provided. In the in-folding type hinge structure, a flexible display panel is provided in two panel portions which are foldably connected to each other, in which folding units can perform a stable folding operation while the two panel portions are being folded or unfolded and the two panel portions are supported such that the panel portions do not rotate over 180 degrees when the two panel portions are fully unfolded, whereby damage of the flexible display panel provided on the surfaces of the two panel portions can be prevented.