Rollable Display Panel Radial Bending Guide Mechanism
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Solution Overview
Problem
Existing portable electronic devices with flexible display panels face challenges in compact storage and protection, as they require a mechanism to efficiently wind and unwind the display without causing damage or stress to the panel.
Innovation Solution
A display apparatus with a case, a first roller, a guide portion, and a handle that includes a system of guide gears and rollers to radially bend and guide the display panel during movement, providing a mechanism for easy insertion and extraction while minimizing friction and stress on the panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the display panel is made flexible and wound around a roller for compact storage, then the portability and storage efficiency are improved, but the display panel may suffer from frictional stress and damage during winding and unwinding
Solution Approach 1:
A guide portion is introduced as an intermediary component between the roller and the display panel. This guide portion radially bends the display panel during movement, distributing the stress and reducing direct friction between the panel and roller surface, thereby preventing panel damage while enabling compact winding storage
Solution Approach 2:
The guide portion changes the bending radius and direction parameters of the display panel during movement. By radially bending the panel through the guide portion, the stress distribution is optimized to prevent damage while achieving compact storage volume
2Device complexity
If a simple roller mechanism is used for winding the display panel, then the device complexity is reduced, but the display panel experiences excessive friction and stress concentration
Solution Approach 1:
The winding mechanism is segmented into two functional components: a roller for rotation and a guide portion for radial bending. This segmentation allows the guide portion to specifically address frictional stress through radial bending, while the roller provides the basic winding function, achieving low complexity with reduced harmful factors
3Ease of operation
If the display panel is frequently wound and unwound for portability, then the ease of operation is improved, but the cumulative stress may cause panel damage over time
Solution Approach 1:
The guide portion provides beforehand cushioning by radially bending the display panel during winding and unwinding operations. This pre-distribution of stress prevents stress concentration that would accumulate over repeated operations, thereby extending panel service life while maintaining ease of portability operations
Data Source
AI summary
A flexible display apparatus having a rollable display panel includes a case having an opening portion formed therein, a first roller rotatably provided inside the case, a display portion provided on the first roller to be wound around the first roller or released from the first roller, and a rotatable guide portion provided inside the case to guide the display portion by radially bending the display portion at least one time during a movement of the display portion.