Composite Sheet Heat Dissipation Wrinkle Reduction
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Solution Overview
Problem
Existing display devices face challenges with wrinkles caused by plastic deformation in heat dissipation sheets, which affect the appearance and functionality of composite sheets used in these devices.
Innovation Solution
A composite sheet is designed with a heat dissipation sheet and a buffer sheet, where the heat dissipation sheet is formed by removing portions of a metal layer and disposed on a buffer member, and the buffer sheet is formed by removing portions of the buffer member, ensuring the heat dissipation sheet's surface area is smaller than the buffer sheet's, thus reducing plastic deformation and wrinkles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the heat dissipation sheet is made with the same area as the buffer sheet, then the heat dissipation coverage is maximized, but wrinkles and plastic deformation occur due to excessive constraint
Solution Approach 1:
The patent divides the buffer sheet and heat dissipation sheet into different area zones, where the buffer sheet has a larger area than the heat dissipation sheet. This segmentation allows the heat dissipation sheet to be properly constrained for heat dissipation while the extended buffer sheet provides additional support without causing wrinkles or plastic deformation in the heat dissipation sheet.
2Shape
If the heat dissipation sheet area is reduced to prevent wrinkles, then plastic deformation is reduced, but heat dissipation coverage decreases
Solution Approach 1:
The patent extends the buffer sheet beyond the boundaries of the heat dissipation sheet in the lateral dimension. This dimensional extension allows the buffer sheet to provide structural support and prevent wrinkles at the edges and corners without requiring the heat dissipation sheet itself to be larger, thus maintaining both appearance quality and heat dissipation coverage.
3Quantity of substance
If the buffer sheet area is reduced to match the heat dissipation sheet, then material usage is minimized, but impact resistance and structural support are reduced
Solution Approach 1:
The patent extends the buffer sheet beyond the heat dissipation sheet boundaries in advance, creating a protective margin that provides structural support and impact resistance at the edges and corners before any external force is applied. This preliminary extension of the buffer sheet ensures enhanced protection without requiring excessive material usage.
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 reduces wrinkles and improves the heat-radiating efficiency while maintaining the impact resistance and appearance quality of the composite sheet, enhancing the performance of display devices.
Implementation Method 1
a heat dissipation sheet disposed on one surface of the buffer sheet
Data Source
AI summary
A composite sheet, including: a buffer sheet; and a heat dissipation sheet on one surface of the buffer sheet. One surface of the heat dissipation sheet facing the one surface of the buffer sheet may have a smaller area than the one surface of the buffer sheet. A display device includes a display panel and a composite sheet on one surface of the display panel.