Backlight Module Tab-Locked Light Board Assembly
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Solution Overview
Problem
Conventional backlight modules require multiple components assembled via screws, leading to increased labor time, production costs, and assembly inaccuracies.
Innovation Solution
A reflective sheet with side walls and tabs, and a light board with recesses, allowing screwless assembly by tabs passing through recesses, reducing component count and improving assembly stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screws are used to assemble the light board and reflective sheet to the backplate, then the assembly is secure and stable, but the quantity of components increases, labor time increases, and production costs increase
Solution Approach 1:
The patent merges the fastening function into the reflective sheet structure itself by integrating tabs directly onto the reflective sheet. This eliminates the need for separate screw components and assembly operations, thereby reducing component quantity while maintaining assembly stability through the integrated tab-and-slot mechanical interlocking system.
Solution Approach 2:
The patent extracts the fastening function from separate screw components and integrates it directly into the reflective sheet structure through tabs. This extraction eliminates unnecessary components while preserving the essential securing function, reducing both component count and assembly complexity.
2Reliability
If screws are used to assemble the light board and reflective sheet, then the connection is secure, but labor time for assembling, reworking, and deburring increases
Solution Approach 1:
The patent combines the positioning and fastening functions into a single integrated tab structure on the reflective sheet. This merging eliminates multiple separate assembly steps (screw insertion, tightening, deburring) into a single snap-fit operation, dramatically reducing labor time while maintaining secure connection through the mechanical interlocking of tabs and slots.
Solution Approach 2:
The tab structure on the reflective sheet provides self-positioning and self-fastening functionality. The tabs automatically align with and snap into the slots on the light board and backplate, eliminating the need for manual screw alignment and fastening operations, thereby reducing labor time while ensuring secure connection.
3Strength
If multiple components are assembled via screws, then the assembly is robust, but assembly accuracy decreases due to the larger quantity of components
Solution Approach 1:
The patent merges multiple fastening points into an integrated tab structure that provides distributed securing across the reflective sheet. This merging reduces the number of discrete assembly operations, minimizing cumulative positioning errors and improving overall assembly accuracy while maintaining robust connection through multiple tab-slot interlocking points.
Data Source
AI summary
A backlight module has a reflective sheet and a light board. The reflective sheet has a body and two side walls located on two sides of the body and being opposite to each other. Each side wall has a tab. A storage space of the reflective sheet is formed between said tabs on the two side walls, the two side walls, and a bottom of the body. Each side of the light board has a recess portion recessed thereon for corresponding to the tab on the side wall of the reflective sheet. The light board is located in the storage space and limited on the reflective sheet by the tab. A display has the aforementioned backlight module and a display panel. The display panel is connected with the backlight module, and the light board faces toward the display panel.