Phase Change Heat Radiating Member for Display Device Thermal Management
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Solution Overview
Problem
Liquid crystal display devices face heat management issues due to prolonged operation of light sources, leading to potential malfunction or short lifespan of driving circuits and deformation of components like light guide plates.
Innovation Solution
Incorporation of a heat radiating member with a phase change material between the auxiliary member and the light source unit, and electrolytic galvanized iron with heat radiating paint on the bottom container member to efficiently discharge heat generated from the light source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If a light source is operated for a long time, then the light source can provide continuous illumination, but the temperature of the liquid crystal display device increases causing malfunction or short life of driving circuits and deformation of components
Solution Approach 1:
The patent extracts the heat management function by introducing a separate heat radiating member with phase change material, which is positioned between the light source and the display panel. This dedicated heat management component extracts heat from the light source area, preventing heat accumulation that would otherwise cause device malfunction or component deformation during continuous operation.
Solution Approach 2:
The phase change material acts as an intermediary between the light source and the display panel. It absorbs excess heat through phase transition, mediating the thermal interaction between these two components and preventing direct heat transfer that would cause temperature rise and potential damage to the display device.
2Loss of energy
If conventional heat management methods are used, then the structure is simple, but heat radiating efficiency is insufficient leading to temperature increase
Solution Approach 1:
The patent utilizes phase transitions of the phase change material to enhance heat radiating efficiency. The material undergoes phase change (e.g., from solid to liquid) at a specific temperature, absorbing large amounts of heat energy during the transition. This phase transition mechanism significantly improves heat dissipation capability compared to conventional heat management methods, preventing temperature increase in the display device.
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
Improves heat radiating efficiency, reduces costs, and increases product packaging and movement efficiency by effectively managing heat dissipation within the display device.
Implementation Method 1
a first heat radiating member between the auxiliary member and the light source unit. The first heat radiating member includes a first phase change material
Implementation Method 2
The electrolytic galvanized iron may include a surface which is treated with a heat radiating paint
Data Source
AI summary
A display device includes: a display panel; a bottom container member which receives the display panel; an auxiliary member including a bottom, and a side extending from an edge of the bottom, and coupled with the bottom container member; a light source unit coupled with the side of the auxiliary member; and a first heat radiating member between the auxiliary member and the light source unit. The first heat radiating member includes a phase change material.