Segmented Outer Frame for LCD Backlight Assembly
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Solution Overview
Problem
The existing backlight modules in LCD devices are complex to assemble and maintain, requiring the removal of multiple components to replace a faulty light source, which can damage vulnerable components and lead to positioning errors, affecting display quality and production efficiency.
Innovation Solution
An outer frame with multiple sections, including a mounting section for the light source, simplifies the assembly and replacement process by allowing the light source to be fixed directly on the frame without disassembling other components, using a receiving structure with through holes and heat-dissipating materials to enhance positioning and heat management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the light source is assembled on the side wall of the backplane, then the backlight module can provide sufficient brightness, but the assembling operation becomes inconvenient and the assembling efficiency is affected
Solution Approach 1:
The outer frame is divided into a mounting section and other sections. The mounting section is specifically designed for assembling the light source, separating this function from the rest of the frame structure. This segmentation allows the light source to be assembled on the outer frame rather than the backplane side wall, improving operational convenience while maintaining brightness performance.
2Stability of the object's composition
If the light source is fixed on the backplane side wall, then the backlight module structure is stable, but the assembling process requires removal of multiple components which complicates the process
Solution Approach 1:
The outer frame is segmented into a mounting section for the light source and other sections for pressing the LGP. This allows the light source to be assembled independently on the outer frame without requiring removal of the LCD panel, optical film, LGP, and other components, thereby simplifying the assembling process while maintaining structural stability.
Solution Approach 2:
The light source assembly function is extracted from the backplane side wall and relocated to the outer frame mounting section. This extraction allows the light source to be assembled and disassembled independently without affecting other components, reducing assembling process complexity while preserving overall structural stability.
3Ease of repair
If multiple components are removed to replace the light source, then the faulty LED can be accessed for repair, but vulnerable components may be easily damaged and positioning error may occur
Solution Approach 1:
The outer frame is divided into a mounting section for the light source and other sections that remain in place. This segmentation allows the light source to be replaced by removing only the mounting section, keeping vulnerable components like the LCD panel, optical film, and LGP intact, thereby reducing damage risk while maintaining repair accessibility.
Solution Approach 2:
The light source mounting function is extracted to a separate mounting section on the outer frame. This extraction enables the light source to be accessed and replaced without removing other components, eliminating the risk of damaging vulnerable components and preventing positioning errors that would occur with repeated assembly and disassembly.
4Device complexity
If the outer frame is made as a single integrated piece, then the structure is simple, but the light source replacement requires removal of the entire frame which reduces productivity
Solution Approach 1:
The outer frame is segmented into a mounting section and other sections. This segmentation allows only the mounting section to be removed for light source replacement, rather than the entire frame, thereby improving productivity while maintaining structural simplicity through the modular design.
Data Source
AI summary
The invention provides an outer frame for a display device, a backlight module and an LCD device. The outer frame includes at least two sections; the sections include a mounting section for arranging the light source of the backlight module. In the invention, because the outer frame of the backlight module is divided into multiple sections, and one of the sections is used as a mounting section for arranging the light source, the light source is arranged on the mounting section of the outer frame when being assembled, and the required assembling action is simple in the assembling process; thus, the step of assembling the light source on the backplane or aluminum extrusion is omitted, and the assembling technology is simplified. In addition, when replacing the light source of the backlight module, only the mounting section of the outer frame is removed, and then the light source is replaced on the outer frame. Thus, most components of the backlight module are exposed into air because many components are removed, causing dust to enter inside the backlight module to affect the optical performance of the backlight module can be avoided, the replacement process of the light source can be simplified, and the stability of the LCD device can be increased.