Backlight Module Flexible Sleeve Positioning
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Solution Overview
Problem
Existing backlight modules suffer from scrap generation and deviations due to hard contact between the light guide plate and positioning parts, affecting image quality and display effectiveness.
Innovation Solution
The implementation of a positioning mechanism with flexible sleeves and studs that provide elastic contact between the light guide plate and optical film, reducing scrap generation and deviations by using shared grooves and notches, and integrating a flexible gasket to enhance frictional force and reduce light leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the light guide plate is in hard contact with positioning parts, then the positioning is firm and stable, but scraps are generated due to friction affecting display quality
Solution Approach 1:
A positioning mechanism comprising a positioning stud and a flexible positioning sleeve is introduced as an intermediary between the light guide plate and the back plate. The flexible positioning sleeve makes elastic contact with the light guide plate, providing stable positioning while reducing friction and preventing scrap generation compared to direct hard contact positioning parts.
2Manufacturing precision
If multiple positioning parts are disposed between the back plate and frame, then the positioning is comprehensive, but accumulated tolerance leads to deviations affecting image quality
Solution Approach 1:
The patent combines the positioning functions for the light guide plate and optical film into a single integrated positioning mechanism. The positioning stud and flexible positioning sleeve work together to simultaneously position both components, eliminating the need for separate positioning parts for each component and reducing accumulated tolerance errors.
3Reliability
If positioning parts are used to fix the light guide plate, then the positioning is secure, but light leakage occurs at the positioning locations
Solution Approach 1:
The patent employs a flexible positioning sleeve made of elastic material that conforms to the surface of the light guide plate. This flexible shell structure provides secure positioning while maintaining optical transparency, allowing light to pass through without leakage at the positioning locations, unlike rigid positioning parts that block light.
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 reduces scrap generation and deviations, enhances display quality, and minimizes light leakage by ensuring elastic contact and precise positioning of the light guide plate and optical film, thereby improving the overall display effect.
Implementation Method 1
at least one positioning mechanism (24) comprises a positioning stud (241) and a flexible positioning sleeve (242) wrapping the positioning stud (241), wherein the inner wall of the groove (23) contacts the flexible positioning sleeve (242)
Implementation Method 2
The flexible positioning sleeve (242) is used for enabling the groove (23) to be in elastic contact therewith, so as to avoid hard contact between the light guide plate and the positioning parts
Implementation Method 3
integrating a flexible gasket to enhance frictional force and reduce light leakage
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
Disclosed are a backlight module and a display device. The backlight module includes a back plate (21); at least one positioning mechanism (24) is disposed inside the bottom plate of the back plate (21), each positioning mechanism (24) includes at least one positioning stud, each positioning stud includes a main body (241) and a flexible sleeve (242) wrapping the main body (241). The backlight module further includes a light guide plate (22); a groove (23) matched with at least one positioning mechanism (24) is provided on the light guide plate (22), an inner wall of the groove (23) is in contact with the flexible sleeve (242) of the main body (241). The backlight module can reduce the generation of the scraps of the light guide plate (22), and avoid the deviation of the light guide plate (22) and the optical film (25).