Integrated Backlight Module with Enclosed Mounting Space
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Solution Overview
Problem
Existing liquid crystal display device backlight modules are complex and costly due to multiple structural components, making assembly challenging and limiting design flexibility.
Innovation Solution
A backlight module design featuring a back plate with enclosed mounting spaces for a reflective sheet and light guide plate, where the film is placed on the light guide plate, and decorative elements are integrated into the bent parts, simplifying assembly and reducing component count, while enhancing light utilization and uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple structural components (front frame, plastic frame, film, light guide plate, reflective sheet, back plate) are used to form the backlight module, then the module structure is complete and functional, but the assembly complexity increases and cost increases
Solution Approach 1:
The patent integrates the back plate, side plates, and bent parts into a unified back plate structure that encloses the mounting space. The back plate simultaneously serves as the structural framework, the mounting enclosure, and the support for optical components, eliminating the need for separate front frame, plastic frame, and back plate assemblies. This merging of functions directly reduces assembly complexity while maintaining structural integrity.
Solution Approach 2:
The back plate is designed as a multi-functional component that performs multiple roles: it provides the structural framework, encloses the mounting space for optical components, supports the light guide plate and reflective sheet, and incorporates bent parts for decorative purposes. This multi-functionality reduces the total number of components needed while ensuring all structural and functional requirements are met.
2Reliability
If multiple structural components and frames are used to assemble the backlight module, then the module is functional, but the manufacturing cost increases
Solution Approach 1:
By combining multiple separate components (back plate, side plates, bent parts) into a single integrated back plate structure, the patent reduces the number of parts that need to be manufactured, stored, and assembled. This consolidation lowers manufacturing costs through reduced material waste, simplified production processes, and decreased assembly operations, while maintaining all necessary functional capabilities.
3Reliability
If a traditional multi-component structure is used, then the module is complete, but the assembly process becomes more complex and time-consuming
Solution Approach 1:
The integration of the back plate structure with enclosed mounting spaces and pre-positioned bent parts allows optical components to be installed in a streamlined sequence within a single enclosure, rather than assembling multiple separate frames and supports. This reduces the number of assembly steps and improves productivity.
4Ease of manufacture
If the back plate uses a simple flat structure, then the manufacturing is simple, but there is no space for decorative portions and the appearance is limited
Solution Approach 1:
The back plate is segmented into functional zones: a flat bottom plate for supporting optical components, vertical side plates for enclosure, and bent parts with step surfaces for decorative portions. This segmentation allows each zone to serve its specific function while maintaining overall manufacturing simplicity through a unified plate structure.
Solution Approach 2:
The back plate transitions from a simple 2D flat structure to a 3D enclosed structure with bent parts that create upper and lower step surfaces. This dimensional transformation provides additional space for decorative portions on the upper step surface while maintaining the structural integrity and manufacturing simplicity of a single plate component.
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 results in a simpler, cost-effective, and thinner backlight module with improved light utilization and design flexibility, facilitating easier assembly and reduced structural complexity.
Implementation Method 1
When the light source enters the light guide plate, the light guide plate scatters the light around
Implementation Method 2
The reflective sheet effectively reflects the light back to the light guide plate to improve the utilization rate of light
Implementation Method 3
the film on the light guide plate effectively uniforms the light and converges the large-angle light for frontal observation
Data Source
Figure 1
Figure 2
AI summary
Disclosed are a backlight module and a display device. The backlight module comprises: a back plate (10), comprising a bottom plate (11), side plates (12), and bent parts (13), and the bottom plate (11), the side plates (12), and the bent parts (13) form an mounting space (14) in an enclosing manner; a reflective sheet (20) arranged on the bottom plate (11); a light guide plate (30) arranged on a side, facing away from the bottom plate (11), side of the reflective sheet (20); a film(40) arranged on a side, facing away from the reflective sheet (20), of the light guide plate (30).