Light-Converting Display Panel Using Heat-Dissipation Particle Layers
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Solution Overview
Problem
Existing display panels face challenges in heat dissipation, which affects their service life and performance, especially as they are designed to improve display quality with higher resolutions and larger sizes.
Innovation Solution
The display panel incorporates a light-converting unit with heat dissipation particles having thermal conductivity greater than 50 W·m−1·K−1, as well as heat dissipation particles in the pixel define layer, separation layer, and adhesive layer, to enhance heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If display panels are designed with higher resolutions and larger sizes to improve display quality, then display quality is improved, but heat generation increases and service life decreases
Solution Approach 1:
The patent changes the thermal conductivity parameter of the encapsulant material by selecting materials with specific thermal conductivity values (ranging from 0.2 to 0.5 W/(m·K)), and introduces heat dissipation particles to modify the thermal properties of the encapsulant, thereby improving heat dissipation performance while maintaining display quality
Solution Approach 2:
The patent uses composite encapsulant materials comprising a base encapsulant material and heat dissipation particles (such as boron nitride, aluminum oxide, or silicon oxide) dispersed within it. This composite structure combines the protective function of the encapsulant with the heat dissipation capability of the particles, resolving the contradiction between display quality and service life
2Temperature
If heat dissipation particles with high thermal conductivity are added to improve heat dissipation, then heat dissipation performance is improved, but device complexity increases
Solution Approach 1:
The patent merges the heat dissipation function with the existing encapsulant layer by incorporating heat dissipation particles directly into the encapsulant material. This integration eliminates the need for separate heat dissipation structures, thereby improving heat dissipation performance without significantly increasing device complexity
Solution Approach 2:
The encapsulant material serves multiple functions: it protects the organic light-emitting layer from moisture and oxygen, maintains structural integrity, and now also provides heat dissipation functionality through the incorporated heat dissipation particles. This multi-functionality reduces the need for additional 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
This solution effectively reduces heat generation in the light-emitting unit and light-converting unit, thereby increasing the service life of the display panel and maintaining high display quality.
Implementation Method 1
The light-converting unit is adapted to convert a first light provided by the light-emitting unit into a second light. The first light has a first peak wavelength, and the second light has a second peak wavelength.
Implementation Method 2
The light-converting unit includes a plurality of light conversion particles and a plurality of first heat dissipation particles. The thermal conductivity of the first heat dissipation particles is greater than 50 W·m−1·K−1.
Data Source
AI summary
Provided is a display panel including a first substrate, a light-emitting unit on the first substrate, and a light-converting unit. The light-converting unit converts a first light having a first peak wavelength emitted by the light-emitting unit into a second light having a second peak wavelength. The first peak wavelength is smaller than the second peak wavelength. The light-converting unit includes light conversion particles and first heat dissipation particles. The thermal conductivity of the first heat dissipation particles is greater than 50 W·m−1·K−1. Provided is another display panel provided including a first substrate, a light-emitting unit on the first substrate, a pixel define layer on the first substrate, and a separation layer. The pixel define layer includes an opening to accommodate the light-emitting unit. An adhesive layer is on the first substrate. At least one of the pixel define layer and the adhesive layer includes the heat dissipation particles.