Stepwise-Thickened Display Backing for Laptop Stress Resistance
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Solution Overview
Problem
Portable information handling systems, such as notebook computers, face issues with LCD display panel damage from external forces, including 'buffing' and localized discolorations like 'white spots', due to inadequate structural strength and material distribution in existing display housing designs.
Innovation Solution
A display backing component with a stepwise-thickened central cross-sectional shape is employed, distributing mass to match stress concentrations, providing increased strength where needed while minimizing material usage, thus resisting deformation and abrasion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a triangular-shaped display backing component with uniform material distribution is used, then the display panel strength is improved, but the overall weight and material usage increase
Solution Approach 1:
The display backing component employs variable thickness design where the central region has greater thickness (3-5mm) to provide enhanced strength and stress distribution, while the peripheral regions have reduced thickness (1-2mm) to minimize weight. This non-uniform thickness distribution optimizes the balance between structural strength and weight reduction, directly resolving the contradiction between improving display panel strength and reducing overall component weight.
2Reliability
If a thicker display backing component is used throughout, then the resistance to external forces is improved, but the material usage and weight increase
Solution Approach 1:
The display backing component implements localized thickness enhancement only in the central region (3-5mm) where stress concentration occurs during buffing and deformation, while maintaining thinner peripheral sections (1-2mm). This targeted approach provides maximum protection against external forces at the most critical location without unnecessarily increasing material usage throughout the entire component, thus resolving the contradiction between improving reliability and reducing quantity of substance.
Solution Approach 2:
The display backing component is segmented into distinct thickness zones: a central thickened region for stress resistance and peripheral thinner regions for weight reduction. This segmentation allows different portions of the component to have optimized thicknesses suited to their specific functional requirements, preventing uniform thickening and reducing overall material usage while maintaining necessary reliability.
3Ease of manufacture
If a uniform thickness display backing component is used, then the manufacturing simplicity is maintained, but the stress distribution efficiency decreases
Solution Approach 1:
The display backing component features localized thickness variation with the central region thicker (3-5mm) to distribute and reduce stress concentration, while peripheral regions remain thinner (1-2mm). This design addresses stress distribution efficiency by providing enhanced structural support where stresses are highest, while maintaining manufacturing feasibility through techniques like injection molding or CNC machining that can accommodate variable thickness geometries without excessive complexity.
Data Source
AI summary
Apparatus and methods for mounting a display panel of a portable information handling system such as a notebook or laptop computer. The apparatus and methods employ a display backing component having a stepwise-thickened central cross-sectional shape and distribution of mass that may be tailored to match the stress concentration of a display assembly.