Rollable Display Panel Fixation and Scratch Prevention
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Solution Overview
Problem
Rollable display panels face challenges in secure fixation to display-panel rollers and suffer from scratches during winding, and existing designs complicate external device connections to the built-in circuit board.
Innovation Solution
A display device configuration featuring an elongate display-panel roller with first and second elongate half-circularly rounded plates and support annular rings, allowing the circuit board to be fixed between the rings and the display panel to pass through a gap, with exposed electric contacts for external connections without disassembly, and varying plate thicknesses to prevent scratches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the display panel is wound around the display-panel roller, then the display device achieves compact storage and portability, but scratches occur on the surface of the display panel
Solution Approach 1:
A protective layer is introduced as an intermediary between the display panel and the display-panel roller. This protective layer prevents direct contact between the panel surface and the roller surface, thereby eliminating scratches while maintaining the compact storage functionality of winding the display panel around the roller.
Solution Approach 2:
A thin protective film or coating is applied to the display-panel roller or the display panel surface. This flexible protective layer allows the winding operation to proceed without causing scratches, while being thin enough not to interfere with the flexibility or display quality of the panel.
2Reliability
If the display panel is securely fixed to the display-panel roller, then the reliability of the connection is improved, but the complexity of the fixation structure increases
Solution Approach 1:
The fixation structure is segmented into modular components such as separate adhesive layers, mounting frames, or snap-fit elements. This segmentation allows for reliable fixation while simplifying manufacturing and assembly, as each component can be independently optimized and assembled in a straightforward sequence.
Solution Approach 2:
The fixation mechanism is designed to be self-aligning or self-locking, eliminating the need for complex adjustment mechanisms or multiple fastening steps. For example, adhesive layers are pre-positioned to automatically align the panel with the roller, or snap-fit structures automatically lock into place, ensuring reliable fixation without increasing structural complexity.
3Device complexity
If the circuit board is enclosed inside the display-panel roller, then the internal integration is improved, but external device connections become difficult
Solution Approach 1:
The electric contacts are extracted from the fully enclosed position and positioned at a accessible location on the roller periphery. This allows the circuit board to remain integrated inside the roller while the contacts are taken out to a position where external devices can easily connect without disassembling the roller structure.
Solution Approach 2:
The electric contacts are nested within a protective but accessible structure on the roller, similar to a nested doll configuration. The contacts are housed within the roller assembly for protection and integration, yet positioned in a way that allows external devices to connect to them through a simple interface or opening without requiring full disassembly.
Data Source
AI summary
The present disclosure provides a display device comprising: a rollable display panel configured to display an image; a display-panel roller, the display panel being fixed thereto; and a support frame, the display-panel roller being rotatably coupled to the frame, wherein the display-panel roller includes: first and second elongate half-circularly rounded plates to face away each other to form a substantially cylindrical elongate inner space; and first and second support annular rings spaced from each other, wherein the first and second support annular rings are disposed in the inner space. Thus, the rollable display panel may be more easily fixed to the display-panel roller.