Flexible Display Panel Roller Slippage Prevention
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Solution Overview
Problem
Existing display devices with flexible panels often experience slippage between the roller and the panel, leading to uneven force distribution, which can damage the panel due to idle rolling.
Innovation Solution
A display device design featuring a housing with a fixed and movable part, including first and second reels with protrusions or grooves, and a flexible display panel with matching grooves or protrusions, ensuring secure engagement and preventing slippage during rolling and unfolding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the roller and flexible display panel are used together for sliding and rolling, then the display area can be switched according to user needs and portability is improved, but the roller and flexible display panel are prone to slip resulting in the roller idle which can damage the panel due to uneven local force
Solution Approach 1:
The patent applies local quality by adding protrusions on the roller surface and corresponding grooves on the flexible display panel at specific engagement positions. This creates localized mechanical interlocking features that prevent slippage while maintaining the overall flexibility and rolling capability of the display panel. The protrusions and grooves are strategically positioned to ensure reliable engagement during sliding and rolling operations.
Solution Approach 2:
The protrusions and grooves act as intermediary mechanical features that mediate the interaction between the roller and the flexible display panel. These intermediary structures transmit force uniformly between the roller and panel, preventing direct slippage and the resulting uneven force distribution that could damage the panel.
2Ease of manufacture
If the roller is designed to be simple and easy to manufacture, then production cost is reduced, but the roller may slip on the flexible display panel causing idle rolling and potential damage
Solution Approach 1:
Instead of complicating the entire roller structure, the patent applies local quality by adding protrusions only at specific engagement positions on the roller surface. This localized modification maintains the overall simplicity of the roller design and ease of manufacture while providing the necessary mechanical interlocking features to prevent slippage and ensure reliable engagement with the flexible display panel.
Data Source
AI summary
A display device is provided. The display device includes a housing comprising a fixed part and a movable part, the movable part being movable relative to the fixed part; a first reel rotatably connected to the fixed part; a second reel parallel to the first reel, rotatably connected to the movable part, and provided with a plurality of first protrusions or a plurality of first grooves; and a flexible display panel with a first end fixed to the fixed part, a second end wound around the first reel, and a middle portion wound around the second reel, where the flexible display panel is provided with a plurality of second grooves matching the plurality of first protrusions or with a plurality of second protrusions matching the plurality of first grooves.