Foldable Display Hinge Mechanism to Prevent Screen Wrinkling
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Solution Overview
Problem
Foldable electronic devices with flexible display screens face issues such as wrinkling, delamination, and breakage due to excessive squeezing or pulling during folding and unfolding, leading to a short lifespan.
Innovation Solution
A rotating mechanism with a rotating shaft, transmission apparatus, and moving components allows the device bodies to rotate relative to each other, adjusting the support length for the flexible display screen to prevent damage during folding and unfolding, and includes features like gear mechanisms and dampers to ensure smooth operation and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the display screen size is increased to improve aesthetics and visual impact, then the user experience is improved, but the overall device size increases making it inconvenient to carry
Solution Approach 1:
The patent employs a flexible display screen that can dynamically change its configuration between folded and unfolded states. When unfolded, the display provides a large screen area for improved visual experience; when folded, the device becomes compact for easy portability. This dynamic reconfiguration allows the same device to satisfy both contradictory requirements at different times.
2Ease of operation
If the flexible display screen is folded to reduce device size for portability, then ease of carrying is improved, but the display screen is easily wrinkled, delaminated, or broken due to excessive squeezing or pulling
Solution Approach 1:
The patent introduces a rotating mechanism with a rotating shaft, transmission apparatus, and moving component that activates during folding operations. This mechanism provides controlled support to the flexible display screen during folding, preventing excessive squeezing and pulling forces that would cause wrinkles, delamination, or breaks. The cushioning effect is built into the folding process itself, protecting the display before damage can occur.
Solution Approach 2:
The rotating mechanism acts as an intermediary between the folding action and the flexible display screen. Instead of allowing direct folding that would damage the screen, the mechanism mediates the folding process by controlling the movement and providing support, thereby protecting the display while still enabling the folding function for portability.
3Reliability
If the rotating mechanism drives the moving component away from the rotating shaft during unfolding, then the flexible display screen is supported to prevent wrinkles and breaks, but the device complexity increases
Solution Approach 1:
The rotating mechanism is designed to be driven by the natural unfolding motion of the device itself. As the device unfolds, the rotating shaft automatically drives the moving component away from the shaft through the transmission apparatus, providing support to the flexible display screen without requiring external actuators or complex control systems. The folding/unfolding action of the device serves its own protective function.
Data Source
AI summary
An electronic device, including a first device body, a second device body, a rotating mechanism, and a flexible display screen, is disclosed. The flexible display screen comprises a first display screen, a second display screen, and a third display screen. The first device body is rotationally connected to the second device body through a rotating mechanism. The first display screen is connected to the second display screen through the third display screen. The first device body is connected to the first display screen, and the second device body is connected to the second display screen. The rotating mechanism includes a rotating shaft, a transmission apparatus, and a moving component equipped with a first transmission tooth that meshes with the transmission apparatus, the rotating shaft is connected to the moving component through the transmission apparatus, and the first device body or the second device body is connected to the moving component.