Synchronized Sliding Display Panel for Crease-Free Wearables
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Solution Overview
Problem
Foldable display devices in wearable devices face issues such as creases and breakage due to repeated folding and unfolding, and there is a need for an alternative structure that can contract and expand without these problems.
Innovation Solution
A display device with a synchronized expansion mechanism, comprising a middle frame assembly, a flexible display screen, and a synchronized expansion mechanism that includes a fixed pivot shaft, transmission components, and winding components, allowing the middle frame assembly and flexible display screen to expand and collapse synchronously, reducing tension and preventing creases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If foldable display devices are used to reduce size and increase display area, then the display device can be compact when folded and expanded when unfolded, but the flexible display screen is prone to creases and breakage after multiple folding and unfolding
Solution Approach 1:
The display screen is divided into a fixed display screen and a movable display screen. The fixed display screen remains stationary while the movable display screen can be retracted into the middle frame assembly cavity, eliminating repeated folding of the same screen material and preventing creases and breakage.
Solution Approach 2:
The movable display screen is designed to be concealed within the middle frame assembly cavity when retracted. This nesting structure allows the display area to be reduced without folding the screen, instead by hiding the movable portion inside the frame assembly.
2Ease of operation
If the flexible display screen is folded to reduce size, then the wearable device becomes more portable, but tension and misalignment occur during folding and unfolding
Solution Approach 1:
The middle frame assembly is designed with sliding capability along the first direction, allowing it to dynamically adjust its position. This dynamic adjustment ensures that the middle frame assembly and movable display screen expand and collapse synchronously, maintaining proper alignment throughout the motion range.
Solution Approach 2:
The synchronized expansion mechanism acts as an intermediary between the middle frame assembly and the movable display screen. It coordinates their movements to ensure they expand and collapse together, preventing misalignment and tension.
3Area of moving object
If the display area is expanded to provide larger display, then the visual experience is enhanced, but the device size increases and portability is reduced
Solution Approach 1:
The display device transitions from a static size to a dynamic size. The middle frame assembly and movable display screen can expand to provide a larger display area when needed, and collapse to a compact size for portability, with the synchronized expansion mechanism ensuring coordinated movement throughout the transformation.
Data Source
AI summary
A display device and a wearable device are provided, including: a middle frame assembly, including a fixed middle frame and a first sliding middle frame slidably connected, the fixed middle frame and the first sliding middle frame sliding relatively along a first direction and together enclosing a middle frame assembly cavity; a flexible display screen including a first free portion corresponding to the first sliding middle frame, with the first free portion being curled and concealed; a synchronized expansion mechanism located within the middle frame assembly cavity, with a fixed pivot shaft extending along a second direction; a first transmission component, fixedly connected to the first sliding middle frame with one end and movably connected to the fixed pivot shaft with another end; and a first winding component fixedly connected to the first free portion with one end and retractably connected to the fixed pivot shaft with another end.