Mini LED Backlight Heat Dissipation via Composite Members
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Solution Overview
Problem
Conventional Mini LED display technologies face challenges in heat dissipation, relying on active components like fans that increase power consumption and have limited heat dissipation capability, and existing materials like foam rubber or graphite sheets either fail to dissipate heat effectively or are prone to vibration-related damage.
Innovation Solution
A backlight assembly is designed with a back plate and a light source plate separated by buffer members and heat dissipation members, where the heat dissipation members extend between the buffer members to efficiently conduct heat away from the light source plate to the back plate, reducing the need for active cooling and incorporating materials like graphite sheets or metals for enhanced heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If active heat dissipation components like fans are used, then heat dissipation capability is improved, but power consumption increases and device complexity increases
Solution Approach 1:
The patent replaces active mechanical heat dissipation components (fans) with passive heat dissipation structures consisting of heat dissipation members made of high thermal conductivity materials. These members conduct heat away from the light source plate to the back plate without requiring external power, thereby improving heat dissipation capability while reducing power consumption.
Solution Approach 2:
The heat dissipation members are designed to automatically conduct heat from the light source plate to the back plate through their inherent thermal conductivity. The structure serves itself by utilizing the temperature gradient between the light source and back plate to drive heat flow without external control or power input.
2Reliability
If foam rubber is used for buffering, then vibration protection is improved, but heat dissipation capability deteriorates
Solution Approach 1:
The patent employs heat dissipation members made of materials with high thermal conductivity (such as metals or graphite) positioned between the light source plate and back plate. These composite structures provide both mechanical buffering to protect against vibration and efficient thermal conduction pathways to dissipate heat, simultaneously addressing both requirements.
3Temperature
If graphite sheets are used for heat dissipation, then heat conduction is improved, but vibration resistance deteriorates
Solution Approach 1:
The patent combines graphite sheets with buffer members in a composite structure. The graphite sheets provide excellent thermal conduction pathways, while the buffer members provide mechanical cushioning and vibration protection. This composite arrangement allows both functions to coexist without compromising either heat dissipation or vibration resistance.
4Temperature
If heat dissipation members extend between buffer members, then heat dissipation efficiency is improved, but device complexity increases
Solution Approach 1:
The heat dissipation members are divided into multiple segments that extend between the buffer members rather than as single continuous pieces. This segmentation allows the heat dissipation structure to integrate with the existing buffer member arrangement, improving heat dissipation efficiency by creating multiple thermal pathways while maintaining compatibility with the overall device structure.
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 improves heat dissipation in Mini LED displays, reducing power consumption and preventing damage from vibration, while maintaining the structural integrity of the display components.
Implementation Method 1
the heat dissipation members extend from a side of the at least one buffer member proximal to the light source plate to a side of the at least one buffer member proximal to the back plate... incorporating materials like graphite sheets or metals for enhanced heat transfer
Data Source
AI summary
A backlight assembly, a backlight unit, and a display panel are provided. The backlight assembly includes a back plate, a light source plate, at least one buffer member, and at least one heat dissipation component. The back plate is on a side of the light source plate distal to a light exit side thereof, both the at least one buffer member and the at least one heat dissipation component are between the back plate and the light source plate, the heat dissipation component extends from a side of the buffer member proximal to the light source plate to a side of the buffer member proximal to the back plate, and the surfaces, which are in contact with each other, of two ones of each heat dissipation member, each buffer member, the back plate and the light source plate, are fixed to each other.