Backlight Module Heat-Dissipating Body and Light Source
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Solution Overview
Problem
The existing backlight module designs for liquid crystal display devices are complex and risky to repair or replace, as they require disassembling multiple components, including the display screen and optical films, which can lead to damage during the process.
Innovation Solution
A backlight module design featuring a heat-dissipating body with a recess and a back plate having through holes and engaging slots allows for the detachable installation of the light source, enabling its retrieval without disassembling the display screen or optical films, thereby simplifying the repair or replacement process and reducing component damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the light source is fixed inside the back plate with aluminum extruded components, then the heat dissipation and structural stability are improved, but the ease of repair and device complexity worsen when repair is required
Solution Approach 1:
The backlight module is divided into separate functional components: the light source assembly (LED light bar with aluminum extruded components) and the back plate. The light source assembly can be independently removed through the through hole portion, allowing repair without disassembling the entire backlight module or affecting other components like the display screen and optical films.
Solution Approach 2:
The light source assembly is extracted as a removable unit from the back plate structure. By providing a through hole portion in the back plate and designing the aluminum extruded components to be detachably installed, the light source can be taken out for repair or replacement without removing other fixed components, thus improving ease of repair while maintaining structural stability during operation.
2Ease of repair
If multiple components including display screen and optical films are disassembled for light source repair, then the light source can be accessed, but the risk of damage to other components and operational time increase
Solution Approach 1:
The light source assembly is designed as an extractable unit that can be removed through the through hole portion in the back plate. This extraction design allows direct access to the light source for repair or replacement without the need to disassemble other components such as the display screen, optical films, or front case, thereby significantly reducing the time required for repair operations.
3Stability of the object's composition
If the light source is embedded in the back plate structure, then the structural integrity is improved, but the ease of operation for repair and replacement worsens
Solution Approach 1:
The backlight module structure is segmented into a stationary back plate and a detachable light source assembly. The back plate maintains structural integrity through its rigid construction with engaging slots, while the light source assembly can be independently operated for repair. The engaging slots provide secure attachment during normal operation but allow controlled removal when needed, balancing structural integrity with ease of operation.
Solution Approach 2:
The connection between the back plate and light source assembly transitions from a fixed static relationship to a dynamic one. The aluminum extruded components are detachably installed in the engaging slots, allowing the light source assembly to be securely fixed during operation (static state) and easily removed when repair is needed (dynamic state). This dynamic design enables both structural integrity and ease of operation.
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 simplifies the repair or replacement of the light source, reduces the risk of damaging other components, and enhances the overall performance of the process by allowing the heat-dissipating body and light source to be removed independently, thus lowering operational complexity and damage risk.
Implementation Method 1
The aluminum extruded components are disposed inside the side wall of the back plate and contacted with the backs of the LED light bars for dissipating the heat of the LED light bars
Data Source
AI summary
A backlight module and a liquid crystal display device are provided. The backlight module includes a heat-dissipating body, a light source and a back plate. A side wall of the back plate includes a through hole portion. The heat-dissipating body is detachably installed at an outer side of the side wall of the back plate and covers the through hole portion, and the light source is received inside the through hole portion.