L-Shaped Backlight Module Heat Dissipation Design
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Solution Overview
Problem
In liquid crystal display technology, the close proximity of radiators for red and white light sources in backlight modules leads to poor heat dissipation, causing increased temperature and reduced brightness of the red light source, which affects display quality.
Innovation Solution
A backlight module design featuring a back-plate with a L-shape, where the red light radiator is positioned on the outer side of the back-plate with heat dissipation fins, and the white light radiator is placed between the light source and the back-plate, allowing for improved heat dissipation by offsetting the radiators and preventing overlapping heat dissipation directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a red light source is added to enhance picture saturation, then display quality is improved, but heat dissipation becomes poor and temperature increases
Solution Approach 1:
The patent positions the red light source radiator on the outer side of the back-plate while the white light source radiator is on the inner side, creating spatial separation in different dimensions. This dimensional arrangement allows both radiators to dissipate heat independently without interfering with each other, solving the heat dissipation problem while maintaining picture saturation enhancement
2Device complexity
If radiators for red and white light sources are disposed on the same side, then device structure is simplified, but heat dissipation effect deteriorates
Solution Approach 1:
The patent divides the back-plate into different regions (inner side and outer side) and assigns different radiators to different regions. The white light source radiator is disposed on the inner side while the red light source radiator is disposed on the outer side, creating segmented heat dissipation zones that improve overall heat dissipation efficiency without significantly complicating the device structure
3Area of stationary object
If red light source and white light source radiators are disposed closely, then space utilization is improved, but heat dissipation performance deteriorates
Solution Approach 1:
Instead of placing both radiators on the same side (two-dimensional proximity), the patent utilizes the third dimension by positioning one radiator on the inner side of the back-plate and the other on the outer side. This spatial separation in different dimensions maintains compact overall size while ensuring adequate heat dissipation performance for both light sources
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 picture saturation and display quality by effectively dissipating heat, reducing the impact of temperature on red light brightness and maintaining consistent light output.
Implementation Method 1
the first radiator includes a heat conduction plate and a plurality of heat dissipation fins, the heat dissipation fins are connected to the heat conduction plate
Implementation Method 2
the first radiator includes a heat conduction plate and a plurality of heat dissipation fins
Implementation Method 3
the first radiator includes a heat conduction plate and a plurality of heat dissipation fins
Data Source
AI summary
The present invention discloses a backlight module which comprises a back-plate, the back-plate is in a L-shape and includes a first back-plate and a second back-plate; the backlight module further comprises a first radiator and a first light source used to emit red light, the first radiator is connected to the first light source; the first back-plate has a through hole, the first radiator is disposed on the outer side of the first back-plate, the first light source is inserted in the through hole and is extended to the inner side of the first back-plate. The present invention also discloses a liquid crystal display.