Segmented Back Cover with Deformable Connection Units for Thermal Stress
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Solution Overview
Problem
Display panels face damage due to thermal expansion during manufacturing, which is exacerbated by the need for high image quality, slimness, and thin bezels in modern display devices, particularly in curved panels where the back cover can cause stress leading to deformation.
Innovation Solution
A back cover system comprising unit plates and a connection unit that deforms to accommodate thermal expansion, providing stable support through elastic interconnection and heat dissipation, while maintaining flexibility and reducing bezel size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the display panel is made thinner to achieve slimness and thin bezel trends, then the device achieves slimness and reduced bezel size, but the display panel becomes more susceptible to damage from thermal expansion
Solution Approach 1:
The back cover is divided into multiple unit plates (first unit plate, second unit plate, third unit plate, fourth unit plate) that are separately arranged and connected through connection units. This segmentation allows each unit plate to independently accommodate thermal expansion while maintaining overall structural support for the thin display panel.
Solution Approach 2:
The connection units are designed with deformable structures that can dynamically adjust to thermal expansion forces. The connection units can deform elastically when thermal expansion occurs, allowing the back cover to adapt to dimensional changes without transmitting damaging stresses to the thin display panel.
2Strength
If a rigid back cover is used to support the display panel, then structural support is improved, but thermal expansion stress causes deformation and potential damage to the display panel
Solution Approach 1:
The back cover is segmented into multiple unit plates connected by deformable connection units. This structure maintains overall rigidity for support while allowing localized deformation at connection units to accommodate thermal expansion, preventing dimensional instability.
Solution Approach 2:
The connection units are designed with specific geometric parameters (protrusions, recesses, elastic deformable portions) that allow controlled dimensional changes during thermal expansion while maintaining the structural integrity and support function of the back cover.
3Reliability
If the back cover is designed to accommodate thermal expansion through deformation, then damage to the display panel is prevented, but the structural rigidity may be reduced
Solution Approach 1:
The back cover is divided into rigid unit plates that maintain structural strength and deformable connection units that accommodate thermal expansion. This segmentation allows the majority of the structure (unit plates) to remain rigid for support while only the connection portions deform to protect the display panel.
Solution Approach 2:
Different portions of the back cover have different mechanical properties: unit plates are designed with high rigidity for structural support, while connection units are designed with controlled deformability to accommodate thermal expansion. This local differentiation of mechanical properties resolves the contradiction between overall rigidity and localized flexibility.
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 stabilizes the display panel by accommodating thermal expansion, preventing damage and enabling the production of slim or bezel-less devices with enhanced rigidity and heat management.
Implementation Method 1
the connection unit being deformed in order to withstand tensile or compressive stress due to thermal expansion of the display panel
Implementation Method 2
an adhesive unit for attaching the back cover to the rear surface of the display panel in order to stably support the display panel
Data Source
AI summary
A back cover is disclosed. The back cover includes a plurality of unit plates connected to the rear surface of a display panel, and a connection unit for interconnecting the unit plates, the connection unit being deformed in order to withstand tensile or compressive stress due to thermal expansion of the display panel. A display device is also disclosed. The display device includes a display panel, a back cover coupled to the rear surface of the display panel, and an adhesive unit for attaching the back cover to the rear surface of the display panel in order to stably support the display panel.