Flexible Screen Sliding Structure to Prevent Crease Fatigue
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Solution Overview
Problem
Existing folding screen mobile phones suffer from cyclic stress at the same folding point, leading to screen breakage due to concentrated bending.
Innovation Solution
An electronic device with a flexible shell and screen that utilizes sliding structures, including sliding rails and members, to distribute stress evenly and prevent bending damage, allowing for adjustable screen size without a fixed folding point.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed folding point is used for the flexible screen, then the hinge mechanism can be simplified, but the screen is susceptible to cyclic stress and breaking at the crease
Solution Approach 1:
The patent implements a dynamic screen system where the flexible screen can fold at multiple positions along the sliding direction rather than being constrained to a fixed folding point. The sliding structure allows the screen to change its folding position dynamically, distributing cyclic stress across different regions and preventing crease formation at a single location, thereby resolving the contradiction between simplified hinge mechanism and screen durability
Solution Approach 2:
The patent segments the folding function across multiple potential folding points along the flexible screen's length. Instead of concentrating the folding action at one fixed point, the screen can be divided into multiple segments that can fold at different locations, distributing the mechanical stress and improving reliability while maintaining a relatively simple hinge structure
2Ease of operation
If the flexible screen is folded at the same position repeatedly, then the folding operation is simple, but the screen breaks due to concentrated bending stress
Solution Approach 1:
The sliding structure enables the flexible screen to dynamically adjust its folding position along the sliding direction. Users can fold the screen at different positions without changing the basic folding operation, maintaining ease of operation while distributing bending stress across multiple locations, preventing screen breakage due to concentrated stress at a single crease
3Stability of the object's composition
If a fixed folding position is used, then the screen structure is stable, but the screen area cannot be adjusted flexibly
Solution Approach 1:
The patent creates a dynamically adjustable screen system where the flexible screen can be positioned at different folding locations along the sliding direction. This allows the screen area to be adjusted flexibly between folded and unfolded states while maintaining structural stability through the guided sliding mechanism, resolving the contradiction between structural stability and adaptability
Solution Approach 2:
The sliding structure provides multi-functionality by enabling the screen to serve multiple purposes: it can be fully unfolded for maximum display area, partially folded for intermediate sizes, or fully folded for compact storage. The same structure accommodates various screen area requirements while maintaining stability, achieving both structural stability and adaptability
Data Source
AI summary
An electronic device is provided. The electronic device includes: a frame; a flexible shell and a flexible screen, where a first end of the flexible shell is rolled in the frame, a second end of the flexible shell is connected to a first end of the flexible screen, and a second end of the flexible screen is disposed on the first surface; and a first sliding structure, where the first sliding structure includes a first sliding rail and a first sliding member slidably engaged with the first sliding rail, the first sliding rail is arranged on the first surface, and the first sliding member is fixed on a side of the flexible screen facing the frame; where the electronic device has an unfolded state and a folded state, and is switched between the unfolded state and the folded state.