Display Panel Heat Radiating Structure Using Divided Phase Change Material
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Solution Overview
Problem
Display devices face challenges in effectively managing heat generated from the display panel, which can affect user safety and reduce the lifetime and image persistence of light-emitting elements, and existing solutions do not adequately address heat dissipation.
Innovation Solution
A display device with a heat radiating member that includes a first plate facing the display panel, a second plate defining an inner space with the first plate, and a phase change material within this space, where the inner space is divided into multiple compartments to enhance heat absorption and dissipation, utilizing materials with varying volumes in solid and liquid states to manage thermal conductivity and diffusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If heat is transferred through the display panel structure and diffused to surroundings through natural convection or radiation, then heat dissipation occurs, but the heat radiating performance is insufficient to prevent temperature rise during prolonged operation
Solution Approach 1:
The patent introduces a phase change material layer between the display panel and the heat radiating member. This material undergoes phase transition (e.g., from solid to liquid or between different solid phases) at specific temperature ranges, absorbing large amounts of latent heat during the process. This effectively suppresses temperature rise of the display panel during prolonged operation, protecting the light emitting elements from thermal damage and extending their lifetime while maintaining image persistence.
Solution Approach 2:
The patent inserts a phase change material layer as an intermediary between the heat source (display panel) and the heat radiating member. This intermediary material actively manages heat transfer by absorbing excess heat through phase transition, thereby mediating the thermal interaction and preventing direct heat accumulation that would otherwise damage the light emitting elements.
2Temperature
If a phase change material is placed in the inner space between the first plate and second plate, then heat absorption capability is enhanced, but the device structure becomes more complex
Solution Approach 1:
The heat radiating member is designed with multi-functionality: the first plate and second plate not only form the structural framework but also serve as thermal conduction paths and containment boundaries for the phase change material. The inner space configuration allows the same structure to perform both mechanical support and thermal management functions, reducing the need for additional components and minimizing structural complexity despite the enhanced heat absorption capability.
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 suppresses temperature rise during prolonged operation, improving heat radiating performance by absorbing and dissipating heat through phase change materials, thereby extending the device's lifespan and maintaining image quality.
Implementation Method 1
a phase change material in the inner space
Implementation Method 2
heat absorption and dissipation, utilizing materials with varying volumes in solid and liquid states
Implementation Method 3
heat generated from the display panel may be transferred through a structure around the display panel and thereafter may be diffused to the surroundings from a surface of the display device through natural convection or radiation
Implementation Method 4
heat generated from the display panel may be transferred through a structure around the display panel and thereafter may be diffused to the surroundings from a surface of the display device through natural convection or radiation
Implementation Method 5
manage thermal conductivity and diffusion
Implementation Method 6
manage thermal conductivity and diffusion
Data Source
AI summary
A display device includes: a display panel having a display region and a non-display region; and a heat radiating member attached to the display panel, wherein the heat radiating member includes: a first plate facing the display panel; a second plate configured to face the first plate and defining an inner space with the first plate; and a phase change material in the inner space, and wherein the inner space includes a plurality of divided spaces, and the phase change material is in the plurality of divided spaces.