Backlight Module Support Pin Clamping Mechanism
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Solution Overview
Problem
The existing direct-type backlight modules for liquid crystal display televisions require manual screw fixation, which is time-consuming and costly, and necessitate additional ornamentation to cover screw holes, increasing assembly time and cost.
Innovation Solution
A backlight module design featuring a support pin with a step structure and an adhesive layer, eliminating the need for screws and tape by clamping the reflector directly onto the back plate, thereby reducing material and labor costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If manual screw fixation is used to support the diffusor, then the structural stability is improved, but the assembly time and labor cost increase
Solution Approach 1:
The patent replaces the mechanical screw fixation system with a support pin system that uses adhesive bonding and elastic deformation. The support pin is inserted into a hole in the back plate, and the adhesive layer bonds the pin to the back plate, eliminating the need for screws and manual assembly operations.
Solution Approach 2:
The support pin structure includes an abutting portion that elastically deforms to clamp the reflector during insertion. This self-clamping mechanism automatically secures the reflector without requiring additional fastening operations or external tools, reducing assembly complexity and time.
2Stability of the object's composition
If screws are used to fix the diffusor, then the structural stability is improved, but the appearance quality deteriorates due to visible screw holes
Solution Approach 1:
The patent extracts and eliminates the screws and screw holes from the design by using support pins with adhesive bonding. This removes the aesthetic defect of visible screw holes while maintaining structural stability through the alternative support mechanism.
3Shape
If exterior ornamentations are installed to cover screw holes, then the appearance quality is improved, but the assembly time and cost increase
Solution Approach 1:
The patent eliminates the need for exterior ornamentations by removing the screw holes through the use of support pins with adhesive bonding. This directly addresses the appearance issue without adding the complexity and time required for additional assembly steps.
4Ease of manufacture
If adhesive material is used between the reflector and back plate, then the assembly process is simplified, but the material cost increases
Solution Approach 1:
The patent applies adhesive to the support pin base before insertion, creating a pre-bonded assembly. The adhesive layer is positioned in advance on the base, and when the pin is inserted, the adhesive bonds the pin to the back plate, simplifying the assembly process while controlling material usage.
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 streamlines the assembly process, reduces material costs, and enhances the appearance of the display device by eliminating screw holes and the need for additional adhesive materials.
Implementation Method 1
an adhesive layer, configured to fix the support pin on the back plate
Implementation Method 2
the reflector is clamped by the abutting portion and is fixed on the back plate
Data Source
AI summary
A backlight module of a display device includes a back plate, a light source, a reflector, a support pin, a diffuser, and an optical film. The light source is disposed on the back plate. The reflector is disposed on the back plate and has an opening. The support pin is located in the opening and on the back plate. The support pin includes a base, an abutting portion, and a transparent supporting portion. The transparent supporting portion is on the base. The abutting portion protrudes outward from the base and extends onto the reflector. The abutting portion and the base form a step structure. The diffuser is located on the transparent supporting portion. The optical film is located on the diffuser. The reflector is located between the abutting portion of the support pin and the back plate.