Backlight Module Groove-Lug Assembly for Stable Optical Films
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Solution Overview
Problem
The thin wall thickness of the middle frame in existing backlight modules makes processing and assembly difficult, increasing costs and complexity.
Innovation Solution
A backlight module design that replaces the middle frame with grooves on lateral plates and lugs on the optical film group, supported by fixing blocks and a light shielding layer, allowing for simplified assembly and reduced deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a middle frame with thin wall thickness is used to support the display panel, then the structural stability is improved, but the ease of manufacture and assembly deteriorates
Solution Approach 1:
The patent removes the middle frame component entirely and replaces it with a groove structure integrated into the backboard. This extraction of the problematic thin-walled middle frame eliminates the manufacturing and assembly difficulties while maintaining the support function through the groove and lug configuration.
Solution Approach 2:
The support function previously performed by the middle frame is segmented and redistributed: the backboard provides structural support, the groove provides positioning constraints, and the lug provides connection to the optical film group. This segmentation allows each component to be manufactured independently with appropriate thicknesses.
2Device complexity
If a middle frame with thin wall thickness is used, then the device complexity is reduced, but the assembly difficulty increases
Solution Approach 1:
The groove structure is merged with the backboard as an integrated feature rather than a separate component. This merging eliminates the need for separate middle frame assembly while the lug provides a simple connection point for the optical film group, actually simplifying the overall assembly process.
3Ease of manufacture
If the wall thickness of the middle frame is increased to improve assembly ease, then the manufacturing cost increases
Solution Approach 1:
By removing the middle frame component entirely, the patent eliminates the need to increase its wall thickness. The support function is maintained through the groove-lug system, which requires minimal material while enabling easy assembly without increasing material consumption.
Data Source
AI summary
Backlight module and display modules are provided in the present disclosure. The backlight module includes a backboard, a light guide plate, and an optical film group. The backboard includes a bottom plate and lateral plates connected with the bottom plate. At least one groove is provided on inner walls of the lateral plates. The light guide plate is disposed on the bottom plate. The optical film group includes a film body and at least one first lug. The first lug extends from a lateral side of the film body towards the backboard and corresponds to the groove one by one. The film body is disposed on the light guide plate. The first lug correspondingly protrudes into the groove.