Rollable Display Panel Protective Sheet Mechanism
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Solution Overview
Problem
Rollable display panels face issues with scratches when coiled and external impact when uncoiled, as the front and rear faces come into contact, leading to potential damage.
Innovation Solution
A display device with a rollable display panel incorporates a first protective sheet made of conductive material applied between the front and rear faces when coiled, and a second protective sheet applied on the front face in the extended state, along with protective rollers to manage the sheets' positioning and tension, preventing scratches and external impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the display panel is coiled around the panel roller, then the display device achieves a compact rolled state, but the front and rear faces of the panel come into contact causing scratches
Solution Approach 1:
A protective sheet is introduced as an intermediary element between the front and rear faces of the display panel during the coiled state. The protective sheet prevents direct contact between the panel surfaces, thereby eliminating scratches while maintaining the compact rolled configuration.
Solution Approach 2:
The protective sheet is applied to the display panel before coiling occurs. This preliminary protective measure ensures that when the panel is rolled around the panel roller, the surfaces are already protected from potential scratch-inducing contact.
2Area of moving object
If the display panel is uncoiled to an extended state, then the display area is maximized, but the panel becomes vulnerable to external impact
Solution Approach 1:
A second protective sheet is applied to the front face of the display panel when in the extended state. This protective sheet acts as a mediator that absorbs or distributes external impact forces, protecting the vulnerable display surface while allowing the panel to maintain its full display area.
3Object-affected harmful factors
If a protective sheet is applied between the front and rear faces during coiling, then scratches are suppressed, but the device complexity increases
Solution Approach 1:
The protective sheet is designed to be automatically applied and removed through the existing coiling and uncoiling mechanism of the display panel. As the panel is coiled around the panel roller, the protective sheet is naturally drawn between the surfaces; when uncoiled, it is automatically removed. This self-service approach minimizes additional mechanical complexity while maintaining effective protection.
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; a support frame, the display-panel roller being rotatably coupled to the frame; and a first protective sheet, wherein when the panel is coiled around the panel roller, the first protective sheet is removably applied on a front face of the display panel. Thus, when the display panel is coiled around a display-panel roller, scratched may be suppressed in the panel.