Display Panel Dual Phase-Change Sheets for Excess Heat
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Solution Overview
Problem
The increasing capacity and integration of electronic components in display devices lead to excessive heat generation, which can reduce the lifespan of products and cause component failure or malfunction.
Innovation Solution
Incorporation of a heat spread sheet with a first phase change material and a heat storage sheet with a second phase change material, where the phase change materials transition between liquid and gaseous or solid and liquid states to manage and dissipate heat effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If electronic components are increased in capacity and integration, then device functionality is improved, but heat generation increases causing reduced lifespan and component failure
Solution Approach 1:
The patent employs phase change materials (PCM) that transition between solid and liquid states to absorb and store heat energy. The first PCM layer changes phase at a lower temperature to capture initial heat, while the second PCM layer changes phase at a higher temperature to store additional heat, creating a multi-stage thermal management system that maintains component reliability while supporting high-capacity electronics
Solution Approach 2:
The invention uses a composite structure combining multiple phase change materials with different phase change temperatures, along with heat spreader materials and heat dissipation components. This composite approach enables the system to handle a broader temperature range and greater heat loads, allowing high-capacity electronic components to operate reliably
2Temperature
If heat radiation measures are implemented, then thermal management is improved, but device complexity increases
Solution Approach 1:
The patent implements a nested thermal management structure where the first phase change material layer is positioned between the display panel and heat spreader, the second phase change material layer is positioned between the heat spreader and heat dissipation component, creating concentric layers of thermal management functions within a compact footprint, thus improving heat radiation without proportionally increasing device complexity
Solution Approach 2:
The heat spreader acts as an intermediary component between the phase change materials and the heat dissipation component, facilitating efficient heat transfer while maintaining a streamlined structure. This mediator approach allows the system to achieve effective thermal management without requiring complex direct coupling between all components
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 enhances thermal radiation performance by efficiently diffusing and storing heat, reducing maximum temperatures and maintaining lower temperatures for extended periods, thereby improving the longevity and reliability of display devices.
Implementation Method 1
the first phase change material may include a material whose phase is changed from liquid to gaseous states by receiving heat from the display panel
Implementation Method 2
the second phase change material may include a material whose phase is changed from solid to liquid states by receiving heat from the heat spread sheet
Data Source
AI summary
A display device includes a display panel, a heat spread sheet below the display panel and in contact with a first surface of the display panel, and a heat storage sheet in contact with at least a portion of the heat spread sheet. The heat spread sheet includes a first phase change material. The heat storage sheet includes a second phase change material having a boiling point greater than a boiling point of the first phase change material.