Display Fixing Member Coupling Area Stress Distribution
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Solution Overview
Problem
Display devices, particularly in folder-type cellular phones, face challenges in withstanding external impacts due to their size and portability, requiring enhanced mechanical strength without increasing weight or complexity.
Innovation Solution
A display device design featuring a fixing member with a bottom portion and side portions that include coupling areas and support areas, where the coupling opening is strategically positioned to distribute stress, enhancing the structural integrity by minimizing deformation upon impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the chassis is made of stainless steel to protect the glass panel from external impacts, then the mechanical strength is improved, but the weight and size increase
Solution Approach 1:
The fixing member is designed with non-uniform cross-sectional areas, creating local quality variations where coupling areas have larger cross-sections for strength while other areas have smaller cross-sections to reduce weight. This allows the structure to have enhanced strength only where needed rather than uniformly throughout.
Solution Approach 2:
The fixing member is segmented into distinct functional areas including coupling areas with coupling openings and support areas with support openings. This segmentation allows each region to be optimized independently for its specific function while contributing to overall structural integrity.
2Weight of moving object
If the chassis structure is simplified for portability, then the weight is reduced, but the mechanical strength decreases
Solution Approach 1:
The cross-sectional area parameter is varied along the length of the fixing member, creating a tapered or stepped profile where the cross-sectional area changes from one end to the other. This parameter change allows optimization of strength-to-weight ratio by providing material only where structurally necessary.
Solution Approach 2:
The fixing member integrates multiple functional features (coupling openings, support openings, varying cross-sections) into a single composite structural element that combines lightness with targeted strength enhancement, effectively creating a composite solution rather than using uniform material throughout.
3Area of stationary object
If coupling openings are positioned close to the boundary of the bottom portion, then the coupling area is maximized, but the structural integrity and resistance to deformation decrease
Solution Approach 1:
The design transitions from considering only the two-dimensional coupling area to incorporating the third dimension of depth and positioning. By controlling the distance from the boundary in the vertical dimension, the design optimizes both coupling area and structural integrity simultaneously, rather than treating them as conflicting two-dimensional constraints.
Data Source
AI summary
There is provided a display device including a panel unit displaying an image, and a fixing member receiving the panel unit and including a bottom portion and a side portion extending from a boundary of the bottom portion toward the panel unit. The side portion of the fixing member includes at least two coupling areas and a support area extending from the coupling areas, wherein, a coupling opening is formed in the coupling areas, and the distance from one end of the coupling opening to the boundary of the bottom portion close to the other end of the coupling opening is smaller than the width of the support area.