Backlight Module Plastic Frame Sliding Channel Assembly
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Solution Overview
Problem
The assembly and disassembly of conventional backlight modules are complicated, leading to potential deformation and increased manufacturing costs due to the use of a metal bottom tray and complex securing mechanisms.
Innovation Solution
A backlight module design featuring a plastic frame with sliding channels and a detachable fixing member that securely accommodates the light guide plate, allowing for easy assembly and disassembly without deformation, and eliminating the need for a costly metal bottom tray.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the top frame and bottom tray are secured using protrusions and notches requiring outward pulling, then the components are firmly connected, but the assembly and disassembly processes become complicated and time-consuming
Solution Approach 1:
The invention divides the securing mechanism into two independent parts: a pressing member that applies downward force and a fixing member that locks the pressing member in place. This segmentation allows the light guide plate to be secured through a simple pressing and locking action, eliminating the need for complex outward pulling movements and significantly reducing assembly and disassembly time while maintaining reliable connection.
2Ease of operation
If the top frame is pulled outwardly to secure or demount side walls, then the components are connected or disconnected, but the top frame becomes liable to deformation
Solution Approach 1:
Instead of pulling the top frame outwardly to secure components, the invention inverts the approach by applying downward pressing force through the pressing member and locking it with the fixing member. This inverted securing method eliminates outward pulling actions that cause frame deformation, maintaining structural integrity while achieving reliable connection.
3Strength
If a metal bottom tray is used to accommodate the light guide plate, then the structure is strong and stable, but the manufacturing cost increases due to shaping requirements and material consumption
Solution Approach 1:
The invention replaces the expensive metal bottom tray with a pressing member made of less costly material. The pressing member performs the essential function of securing the light guide plate through downward pressing force, and while it may require replacement over time, the initial manufacturing cost is significantly reduced compared to metal bottom trays, achieving cost-effective strength.
Data Source
AI summary
An exemplary backlight module (20) includes a frame (21), a light guide plate (25), and a fixing member (22). The frame includes a substantially rectangular bottom plate (210), and a first, a second, and a third side walls (211, 212, 213) upwardly extending from three edges of the bottom plate. The first side wall is opposite and parallel to the third side wall. A first spacing board (214) inwardly extends from the first side wall. The first spacing board, the first side wall, and the bottom plate cooperatively define a first sliding channel. The light guide plate is accommodated in the first sliding channel of the frame. The fixing member is detachably secured to the frame such that the light guide plate is fixedly accommodated in the frame.