Silicon OLED Heat Dissipation Layer for Brightness Uniformity
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Solution Overview
Problem
Current silicon-based OLED display devices lack effective heat dissipation designs, leading to temperature-related issues such as non-uniform display brightness and reduced lifespan, especially in near-eye display applications like VR and AR, where heat management is crucial for user experience.
Innovation Solution
A display device comprising a silicon-based organic light-emitting display panel, a flexible printed circuit board, and a multi-layer heat dissipation structure that extends from the non-display side to cover the circuit board, utilizing materials like metal particles or phase change materials for enhanced thermal conductivity and efficient heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If no heat dissipation design is implemented in silicon-based OLED display devices, then the device structure remains simple and manufacturing cost is low, but temperature-related issues occur leading to non-uniform display brightness and reduced lifespan
Solution Approach 1:
The heat dissipation layer is divided into multiple segments including a first heat dissipation layer on the non-display side of the silicon substrate, a second heat dissipation layer on the flexible printed circuit board, and a third heat dissipation layer connecting them. This segmentation allows heat to be dissipated through multiple pathways, improving heat dissipation efficiency while maintaining manageable structural complexity
Solution Approach 2:
The heat dissipation structure merges the silicon substrate, flexible printed circuit board, and heat dissipation layers into an integrated thermal management system. The third heat dissipation layer extends from the silicon substrate to the flexible printed circuit board, combining these components into a unified heat dissipation pathway that improves reliability without requiring separate complex cooling systems
2Loss of energy
If heat dissipation layer extends to cover flexible printed circuit board, then heat dissipation efficiency is improved, but manufacturing process complexity increases
Solution Approach 1:
The third heat dissipation layer serves multiple functions simultaneously: it acts as a heat dissipation pathway from the silicon substrate to the flexible printed circuit board, provides structural support, and facilitates thermal coupling between components. This multi-functionality improves heat dissipation efficiency while avoiding the need for additional separate components that would complicate manufacturing
Solution Approach 2:
The heat dissipation structure utilizes composite material arrangements where the third heat dissipation layer is formed to extend between the silicon substrate and flexible printed circuit board. This composite structure optimizes thermal conductivity across different materials while maintaining ease of integration into the existing manufacturing process
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 dissipates heat generated by the display panel and circuit board, improving display quality, extending the device's lifespan, and simplifying the manufacturing process while reducing costs.
Implementation Method 1
The heat dissipation layer is on a non-display side of the silicon-based organic light-emitting display panel and extends to the flexible printed circuit board to cover at least a part of the flexible printed circuit board
Implementation Method 2
a material of the second heat dissipation layer is metal particles or a phase change material
Data Source
AI summary
A display device, a heat dissipation layer, an electronic device, and a method for manufacturing a display device are provided. The display device includes: a silicon-based organic light-emitting display panel, including a silicon substrate, a first electrode of a display element, an organic light-emitting layer, and a second electrode of the display element that are stacked sequentially; a flexible printed circuit board electrically connected to the silicon substrate; and a heat dissipation layer on a non-display side of the silicon-based organic light-emitting display panel, extending to the flexible printed circuit board to cover at least a part of the flexible printed circuit board. A gate drive circuit, a data drive circuit, and a pixel circuit are integrated on the silicon substrate, and the flexible printed circuit board is configured to transmit electrical signals to the gate drive circuit, the data drive circuit, and the second electrode of the display element.