Roller Display Device with Link Mechanism for Stable Winding
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Solution Overview
Problem
Flexible display devices, such as those using organic light emitting diodes (OLEDs), face challenges in stable winding and unwinding due to their thin profile and susceptibility to external impacts, which can lead to wrinkling and damage.
Innovation Solution
A display device design incorporating a housing with a roller, bars, links, and a plate with slits that allow for easy winding and unwinding, along with a gasket and resin layers for enhanced rigidity and protection, ensuring the display panel is securely fixed and protected during these processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the flexible display is made thin to achieve ultra-thin profile, then the display device becomes more compact and portable, but the display becomes susceptible to external impacts and wrinkling
Solution Approach 1:
The patent applies beforehand cushioning by introducing a protective housing structure that envelops the flexible display panel. The housing includes a first bar, second bar, and plate that form a protective cavity, positioning the display within a rigid structure before external impacts can occur. This pre-protective arrangement shields the thin display from damage while maintaining its ultra-thin profile.
Solution Approach 2:
The patent utilizes flexible shells by employing a flexible display panel that can be wound and unwound around a roller mechanism. The display itself acts as a flexible thin film that maintains integrity during movement, while the rigid housing provides external protection against impacts that would otherwise damage the thin flexible structure.
2Adaptability or versatility
If the flexible display is wound around a roller for compact storage, then portability is improved, but stable winding and unwinding becomes difficult
Solution Approach 1:
The patent applies dynamics by implementing a movable link mechanism that dynamically adjusts the position of the first bar relative to the second bar. The link can pivot between different positions, allowing the housing to adapt its shape during winding and unwinding operations. This dynamic adjustment ensures the display winds smoothly around the roller without creasing while maintaining structural support.
Solution Approach 2:
The patent applies segmentation by dividing the protective housing into multiple components (first bar, second bar, plate, link) that can move independently. The link acts as a separate segment connecting the bars, enabling controlled movement and adjustment during the winding process. This segmented structure allows each component to perform its specific function in facilitating stable winding.
3Reliability
If the display panel is fixed securely to prevent movement, then reliability is improved, but the ability to wind and unwind the flexible display is reduced
Solution Approach 1:
The patent applies dynamics by creating a dynamic fixation system where the display panel is secured to the movable link rather than a fixed structure. As the link pivots and the bars move relative to each other, the fixation point moves with it, allowing the display to remain securely attached while the entire assembly winds and unwinds around the roller.
Solution Approach 2:
The patent uses the link as an intermediary between the display panel and the rigid housing structure. The link mediates the connection, providing secure fixation to the display while simultaneously allowing the necessary movement for winding and unwinding. This intermediary component translates the motion requirements into a form that maintains both security and flexibility.
Data Source
AI summary
A display device is disclosed. The display device includes a housing, a roller installed inside the housing, a first bar positioned on an upper side of the roller to be opposite to the roller, a link connected to the first bar and the housing and lifting the first bar, a second bar positioned opposite the first bar and fastened to the first bar, a plate including a first part wound or unwound from the roller and a second part extended rearward from the first part and fixed between the first bar and the second bar, and a display panel provided in the first part of the plate.