OLED Display Heat Dissipation Member With Layered Graphite
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Solution Overview
Problem
Existing organic light emitting diode (OLED) displays face challenges in efficiently dissipating heat, which can lead to reduced image quality due to thermal afterimages.
Innovation Solution
The OLED display device incorporates a heat dissipation member with multiple layers of varying thicknesses and thermal conductivities, including natural and artificial graphite, to effectively disperse heat generated by the display panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a single-layer heat dissipation structure is used, then the device complexity is low, but the heat dissipation speed is insufficient
Solution Approach 1:
The heat dissipation member is divided into multiple layers (first heat dissipation layer, second heat dissipation layer, and third heat dissipation layer) with different materials and thermal conductivities. Each layer segments the heat dissipation function to optimize thermal management, with the second layer having higher thermal conductivity for rapid heat transfer and the first and third layers providing additional heat dissipation capacity.
Solution Approach 2:
The heat dissipation member uses composite material structure with at least two different materials having different thermal conductivities. The second heat dissipation layer uses material with higher thermal conductivity (e.g., metal or graphite) while the first and third layers use materials with lower thermal conductivity, creating a composite structure that optimizes both heat dissipation speed and thermal distribution.
2Speed
If heat dissipation layers with uniform thickness are used, then the manufacturing precision is easier to control, but the heat dissipation efficiency is reduced
Solution Approach 1:
Different heat dissipation layers are designed with different thicknesses according to their specific functions. The second heat dissipation layer (with higher thermal conductivity) has smaller thickness to enable rapid heat transfer, while the first and third layers have larger thicknesses to provide additional heat dissipation capacity and thermal distribution, optimizing heat dissipation efficiency through localized thickness variation.
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 design enhances heat dissipation speed, minimizing thermal afterimages and improving image quality by evenly distributing heat across the display panel.
Implementation Method 1
The heat dissipation member comprises a plurality of heat dissipation layers having different thicknesses and different thermal conductivities from each other
Implementation Method 2
The first heat dissipation layer has a thickness of about 820 μm and a thermal conductivity of about 240 W/mk, and the second heat dissipation layer has a thickness of about 100 μm and a thermal conductivity of about 1000 W/mk
Data Source
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AI summary
An organic light emitting diode display device includes a display panel comprising an organic light emitting diode. A heat dissipation member faces the display panel. The heat dissipation member comprises a plurality of heat dissipation layers having different thicknesses and different thermal conductivities from each other.