Rollable Display Jig Inversion for Stress Relief
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Solution Overview
Problem
Rollable display devices face challenges in maintaining a flat state of flexible display panels due to continuous stress in one direction within their housing, leading to deformation when unrolled.
Innovation Solution
A display device design featuring a flexible display panel, a first housing with a protruding portion, and a jig that can be rotated in different directions, along with a wire and gears for mechanical assistance, to distribute stress evenly and prevent deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the flexible display panel is continuously accommodated in the housing in a rolled state, then portability and storage size are improved, but the flexible display panel becomes deformed due to continuous stress in one direction
Solution Approach 1:
The patent applies inversion by rotating the jig in the opposite direction to the housing rotation. When the housing rotates in a first direction to accommodate the display panel, the jig rotates in a second direction (opposite direction) to counterbalance the stress, preventing deformation of the flexible display panel while maintaining the rolled state for portability
2Duration of action of stationary object
If the flexible display panel is kept rolled in the housing for a long period, then storage efficiency is improved, but the panel maintains stress in one direction causing deformation
Solution Approach 1:
The counterbalancing rotation of the jig in the opposite direction to the housing rotation continuously counteracts the stress on the flexible display panel during long-term storage, maintaining its flat state and reliability over extended periods
3Ease of operation
If the flexible display panel is unrolled for use, then display functionality is improved, but maintaining a flat state becomes difficult due to previous stress accumulation
Solution Approach 1:
By rotating the jig in the opposite direction during the unrolling process, the stress accumulated during storage is counterbalanced, allowing the flexible display panel to unroll smoothly and maintain a flat state without deformation, improving ease of operation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively maintains a flat state of the flexible display panel by distributing stress and reducing deformation, ensuring reliable unrolling and rolling operations.
Implementation Method 1
The wire may include one or more of the following: a leaf spring, a spiral spring, and a coil spring
Data Source
AI summary
A display device including: a flexible display panel; a first housing having an outer peripheral surface around which the flexible display panel is rolled; a jig in the first housing and connected to a first end of the flexible display panel, wherein the flexible display panel is configured to be rolled around the jig; and a second housing accommodating the first housing, wherein the jig and the first housing are configured to be rotated in different directions.