Backlight Module Edge Reinforcement via Vertical Extending Plates
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Solution Overview
Problem
Conventional backlight modules for LCDs face structural strength issues at the edge due to the trend of larger screen sizes and thinner thickness, making them prone to deformation under external forces.
Innovation Solution
A supporting component with a base and extending plates is integrated into the backlight module, reinforcing the structural strength at the edge by extending along the axial direction of the base, and a bezel is used to further enhance resistance to external forces, ensuring the module can withstand forces along multiple axes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the backlight module is made thinner and larger in screen size, then the display device achieves better aesthetics and larger display area, but the structural strength at the edge becomes insufficient
Solution Approach 1:
The supporting component extends in the thickness direction (z-axis) from the back board, creating a three-dimensional structure that reinforces the edge without increasing the lateral dimensions. The extending plate stands vertically on the back board and extends along the axial direction, providing structural support in the thickness dimension while maintaining the thin profile of the display device.
Solution Approach 2:
The supporting component is divided into distinct segments: a base disposed on the back board, a first extending plate standing on the base, and a second extending plate standing on the base. This segmentation allows each part to perform its specific function - the base provides foundation, while the extending plates provide vertical reinforcement at the edge.
2Strength
If the structural strength at the edge is reinforced, then the display device resists deformation better, but the thickness of the backlight module increases
Solution Approach 1:
Instead of reinforcing the edge by increasing lateral dimensions or adding bulk material in the plane of the back board, the supporting component utilizes the thickness direction (z-axis) for reinforcement. The extending plate stands vertically on the base and extends along the axial direction, providing structural strength without significantly increasing the overall thickness of the backlight module.
Solution Approach 2:
The supporting component uses thin-walled plate structures (first extending plate and second extending plate) that provide high structural strength-to-weight ratio and high strength-to-thickness ratio. These thin plate structures can resist bending and deformation forces effectively while maintaining a compact thickness profile.
3Ease of manufacture
If conventional punching process is used to bend the back board edge, then the optical films and frame can be fixed, but the structural strength becomes insufficient under external forces
Solution Approach 1:
The supporting component is segmented into a base and extending plates, where the base is disposed on the back board (maintaining the punching process compatibility) and the extending plates provide additional vertical support. This segmentation allows the base to perform the original function of fixing optical films and frame while the extending plates provide enhanced structural strength.
Solution Approach 2:
The supporting component adds vertical dimension (z-axis extension) to the conventional two-dimensional back board structure. The extending plate stands on the base and extends along the axial direction, providing structural reinforcement in the thickness direction that complements the planar fixing function of the base.
Data Source
AI summary
A backlight module includes a back board, an illumination assembly, a supporting component and a frame. The illumination assembly is disposed on the back board. The supporting component includes a base, a first extending plate and a second extending plate. The base is disposed on the back board. Both of the first extending plate and the second extending plate stand on the base and extend along an axial direction of the base so that the first extending plate and the second extending plate are at a first angle and a second angle relative to the base, respectively. The first extending plate is located between the second extending plate and the illumination assembly. The frame is disposed on the supporting component, and the illumination assembly is located between the frame and the back board.