OLED Display Dual Composite Sheet Heat Dissipation
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Solution Overview
Problem
Organic light emitting diode displays experience hot spots due to inadequate heat dissipation, as existing technologies rely on integrated heat dissipation sheets that can lead to heat transfer between different heat sources, exacerbating the issue.
Innovation Solution
The implementation of a dual composite sheet structure with separated heat dissipation sheets and buffer sheets positioned according to the heat sources, allowing for two- and three-dimensional separation to prevent heat transfer between different heat sources, thereby minimizing hot spots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If an integrated heat dissipation sheet is used, then heat dissipation is provided, but heat transfer between different heat sources occurs causing hot spots
Solution Approach 1:
The integrated heat dissipation sheet is divided into multiple separate heat dissipation sheets (first heat dissipation sheet and second heat dissipation sheet) positioned below different heat sources. This segmentation prevents heat transfer between heat sources while maintaining heat dissipation functionality for each individual heat source.
Solution Approach 2:
The patent introduces a vertical dimension to heat dissipation by placing heat dissipation sheets at different heights and positions relative to different heat sources. The first heat dissipation sheet is positioned below the first heat source and the second heat dissipation sheet is positioned below the second heat source, creating spatial separation that prevents heat transfer while maintaining effective heat dissipation for each source.
2Object-affected harmful factors
If heat dissipation sheets are separated, then heat transfer between heat sources is prevented, but device complexity increases
Solution Approach 1:
Each heat dissipation sheet serves multiple functions: it provides thermal management for its associated heat source, acts as a structural support element, and contributes to the overall device assembly. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity.
Solution Approach 2:
The heat dissipation sheets are integrated with other device components such as being positioned between the heat sources and the device housing, or combined with structural support elements. This merging approach allows the separated heat dissipation structure to fulfill multiple roles simultaneously, reducing overall device complexity.
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 configuration effectively discharges heat from each heat source to the outside without substantial transfer between them, significantly reducing the occurrence of hot spots and enhancing heat dissipation efficiency.
Implementation Method 1
a first heat dissipation sheet and a first buffer sheet below the organic light emitting diode panel... a second heat dissipation sheet and a second buffer sheet below the organic light emitting diode panel
Implementation Method 2
a first composite sheet including a first heat dissipation sheet and a first buffer sheet below the organic light emitting diode panel; a second composite sheet including a second heat dissipation sheet and a second buffer sheet below the organic light emitting diode panel and spaced apart from the first composite sheet
Data Source
AI summary
An organic light emitting diode display includes: an organic light emitting diode panel; a first composite sheet including a first heat dissipation sheet and a first buffer sheet below the organic light emitting diode panel; a second composite sheet including a second heat dissipation sheet and a second buffer sheet and disposed below the organic light emitting diode panel and spaced apart from the first composite sheet; a first heat source below the first composite sheet; and a second heat source above the second composite sheet.