Roller-Shaft Elastic Support for Sliding Display Panel Stress Control
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Solution Overview
Problem
Existing display devices face issues with the cover glass loosening from the display panel due to repeated sliding, stress-induced damage from elastic members, excessive tensile stress, and maintaining display quality while accommodating the panel in a housing unit without compromising flexibility or rigidity.
Innovation Solution
A display device design incorporating a roller with a rotary shaft and an elastic member, where one end of the elastic member is connected to the roller's inner surface and the other end to the rotary shaft, allowing for controlled rotation to minimize tensile stress and slip differences, and a motor to manage energy storage and reduce stress on the display unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display panel is repeatedly slid in and out of the housing unit, then the display device achieves portability and compact storage, but the cover glass may loosen from the display panel
Solution Approach 1:
The adhesive layer is applied in advance to the cover glass or display panel to pre-establish the bonding connection before any sliding occurs. This preliminary bonding action ensures that the cover glass remains attached during subsequent repeated sliding operations, preventing loosening while maintaining portability.
2Ease of operation
If the elastic member is used to drive the roller during sliding, then the display panel can be accommodated in the housing unit, but excessive tensile stress may damage the display panel
Solution Approach 1:
The elastic member is designed with predetermined elastic properties and pre-installed in the housing unit to cushion and absorb excessive tensile stress before it can damage the display panel. The elastic member acts as a stress buffer, allowing smooth sliding accommodation while protecting the display panel from damage through its elastic deformation characteristics.
3Volume of moving object
If the display panel is made flexible for winding and unwinding, then the display device achieves compact storage, but the display panel may not remain flat when disposed outside the housing unit
Solution Approach 1:
The roller is designed with a curved cylindrical surface that guides the flexible display panel during winding and unwinding operations. The curved surface of the roller maintains the display panel in a controlled curved state during storage, and when deployed, the panel naturally returns to a flat state, achieving both compact storage and display flatness.
4Device complexity
If the elastic member is tightly connected to the roller and rotary shaft, then the winding mechanism is compact, but excessive stress is transmitted to the display panel during sliding
Solution Approach 1:
The elastic member is designed with dynamic elastic properties that allow it to deform and absorb stress during sliding operations. The elastic member connects the roller and rotary shaft with flexible bonding, maintaining compact mechanism design while dynamically adjusting to stress conditions, preventing excessive stress transmission to the display panel through its elastic deformation.
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 constant tensile stress, reduces slip and damage to flexible components, and keeps the display panel flat, minimizing separation of the cover window from the display panel during winding and unwinding.
Implementation Method 1
an elastic member having one end connected to an inner circumferential surface of the roller and the other end connected to the rotary shaft, and the roller and the rotary shaft are rotatably connected to each other
Data Source
AI summary
A display device can include a display panel, a roller which guides the sliding of the display panel, a rotary shaft which passes through both ends of the roller, and an elastic member having one end connected to an inner circumferential surface of the roller and the other end connected to the rotary shaft, and the roller and the rotary shaft are rotatably connected to each other. Accordingly, according to the present disclosure, one end and the other end of the elastic member are configured to be rotatable to minimize the excessive increase of the tensile stress of the elastic member which is transmitted to the display panel and improve the reliability of the display panel.