Display Support Structures with Encapsulant-Rigid Frame Protection
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Solution Overview
Problem
Electronic devices face challenges in mounting displays and display cover layers, often resulting in bulky components and excessively wide inactive border regions due to inadequate protection and mounting techniques.
Innovation Solution
The use of a combination of encapsulant materials with varying elasticity and rigid outer materials, such as a molded frame member, to couple the display cover layer to the housing sidewalls, allowing the active display area to extend closer to the edges while absorbing mechanical stresses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional mounting techniques are used to protect the display, then the display is protected from damage, but the device becomes bulky with excessively wide inactive border regions
Solution Approach 1:
The support structure is segmented into multiple functional layers: a rigid outer material forming a frame, and a softer encapsulant material filling the interior space. This segmentation allows each material to perform its specialized function while collectively providing protection without excessive bulk.
Solution Approach 2:
Different regions of the support structure have different material properties - the outer frame uses rigid material for structural support and stress distribution, while the interior uses softer encapsulant material for shock absorption and display cushioning. This local differentiation optimizes protection while minimizing overall volume.
2Reliability
If traditional mounting techniques are used to protect the display, then the display is protected from damage, but the inactive border regions become excessively wide
Solution Approach 1:
The support structure divides protection functions between the rigid outer frame and softer interior encapsulant, allowing the display to extend closer to the device edges while maintaining protection through the coordinated action of both materials.
Solution Approach 2:
The patent changes the material parameters (elastic modulus, hardness) of the support structure to optimize the balance between protection and display area. The rigid outer material provides structural integrity while the softer interior material allows for thinner overall construction.
3Area of stationary object
If the active display area is extended close to the edges, then the display area is maximized, but the display becomes more vulnerable to mechanical stresses
Solution Approach 1:
The softer encapsulant material is positioned between the rigid outer frame and the display to provide beforehand cushioning. This cushioning layer absorbs mechanical stresses and shocks before they reach the display, protecting it even when the display extends close to the device edges.
Solution Approach 2:
The support structure uses composite materials with different mechanical properties - rigid outer material for structural support and softer encapsulant material for shock absorption. This composite construction protects the display from mechanical stresses while allowing maximum display area.
4Strength
If a single rigid material is used for the support structure, then structural strength is provided, but mechanical stresses are not adequately absorbed
Solution Approach 1:
The support structure is divided into two functional segments: rigid outer material for structural strength and softer encapsulant material for stress absorption. This segmentation allows both strength and shock absorption requirements to be met simultaneously.
Solution Approach 2:
The patent employs composite materials with contrasting mechanical properties - the rigid outer frame provides structural strength while the softer interior encapsulant provides mechanical stress absorption and shock damping.
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
This approach minimizes inactive border regions and enhances the robustness of the display by transferring mechanical stresses to the housing, thereby expanding the active display area and improving protection.
Implementation Method 1
The soft encapsulant that encapsulates part of the display may absorb mechanical stresses on the cover layer to protect the display
Implementation Method 2
the rigid outer material may transfer mechanical stresses on the cover layer to the housing
Data Source
AI summary
An electronic device may include a display, a cover layer overlapping the display, and a housing have housing sidewalls. An encapsulant material may surround at least part of the display and may be used to couple the cover layer to the housing sidewalls. A rigid outer material having a higher elastic modulus than the encapsulant material may also be used to couple the cover layer to the housing sidewalls. The rigid outer material may be a molded material that surrounds an outer perimeter of the encapsulant, or the rigid outer material may be a metal or plastic frame member having a C-shaped cross-section or other geometry. The display may overlap the housing sidewall. The encapsulant may absorb mechanical stresses on the cover layer to protect the display, whereas the rigid outer material may transfer mechanical stresses on the cover layer to the housing.