Thermoelectric Element Integration in OLED Substrate Layers
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Solution Overview
Problem
Display devices, particularly OLEDs, face challenges in efficiently releasing internal heat, which can lead to reduced performance and lifespan due to thermal management issues.
Innovation Solution
Incorporating a thermoelectric element, such as a Peltier element, between layers of the substrate, connected to a DC power source, to actively absorb and emit heat, thereby facilitating efficient heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a thermoelectric element is incorporated into the substrate to actively manage heat, then heat dissipation efficiency is improved, but device complexity increases
Solution Approach 1:
The thermoelectric element is integrated within the substrate structure itself, merging the heat management function with the existing substrate rather than adding a separate external cooling system. This reduces overall device complexity while maintaining effective heat dissipation.
Solution Approach 2:
The thermoelectric element acts as an intermediary component between the display layer and the external environment, actively transferring heat from the display layer through the substrate to external heat sinks, thereby resolving the heat management problem without requiring direct contact with external cooling systems.
2Temperature
If multiple layers and protective layers are added to accommodate the thermoelectric element, then heat management capability is improved, but manufacturing complexity increases
Solution Approach 1:
The substrate is divided into multiple functional layers including first and second base layers with protective layers positioned strategically. The thermoelectric element is inserted within this segmented structure, allowing heat management functionality to be integrated without requiring complete redesign of the manufacturing process.
Solution Approach 2:
The thermoelectric element is nested within the multi-layer substrate structure, with protective layers positioned between the thermoelectric element and other components. This nested arrangement protects the thermoelectric element while maintaining integration within the existing manufacturing framework.
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 enables effective heat management by actively absorbing and radiating internal heat from the display layer, improving device performance and longevity by maintaining optimal operating temperatures.
Implementation Method 1
a thermoelectric element, such as a Peltier element, between layers of the substrate, connected to a DC power source, to actively absorb and emit heat
Data Source
AI summary
A display device includes: a substrate including at least two layers; a driving circuit on the substrate; a pixel electrode connected to the driving circuit; a common electrode on the pixel electrode; a display layer between the pixel electrode and the common electrode; and a thermoelectric element located between the at least two layers of the substrate.