Back Plate Side Wall Bending for Backlight Module Strength
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional backlight modules face a reduction in structure strength due to the decreasing thickness of metallic back plates, which compromises their durability and ability to support the light source module and optical films effectively.
Innovation Solution
A back plate design featuring a side wall with a thickness of less than or equal to 0.12 mm, incorporating a bending part formed by bending sheets that overlap and are parallel to the wall body, with gaps between them, enhancing structural strength while maintaining thinness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the thickness of the metallic back plate is decreased to achieve thinner and lighter LCD displays, then the product thickness and weight are reduced, but the structure strength of the back plate is compromised
Solution Approach 1:
The patent transitions from a simple planar back plate structure to a three-dimensional structure by adding a side wall that extends vertically from the plate body. This dimensional change allows the back plate to maintain thinness in the horizontal direction while gaining structural strength through the vertical side wall configuration, effectively resolving the contradiction between reduced thickness and maintained strength.
Solution Approach 2:
The side wall incorporates a bending part with a curved surface that extends outward from the plate body. This curvature design increases the moment of inertia and structural rigidity of the side wall without significantly increasing material usage or overall thickness, thereby strengthening the back plate while maintaining its thin profile.
2Volume of moving object
If the thickness of the metallic back plate is decreased to minimize product size, then the overall product dimensions are reduced, but the ability to support light source module and optical films is weakened
Solution Approach 1:
By extending the back plate structure vertically through the side wall, the patent creates additional support volume without increasing the horizontal footprint. This allows the thin back plate to maintain compact product dimensions while the vertical side wall provides enhanced support capability for the light source module and optical films.
Solution Approach 2:
The side wall is constructed as a composite structure consisting of a plate body portion and a bending part portion with different geometric characteristics. This composite configuration combines the flat surface area of the plate body with the structurally superior curved bending part, creating a unified component that provides both compact dimensions and reliable support functionality.
Data Source
AI summary
A back plate for use with a backlight module, a backlight module using the same, and the manufacturing method thereof are provided. The back plate includes a plate body and a side wall. The side wall extends out from the edge of the plate body and includes a wall body and a bending part, wherein the thickness of the wall body is less or equal to 0.12 mm. The bending part is formed by bending a plurality of bending sheets outward from the top of the wall body, wherein the thickness of each bending sheet is less or equal to 0.12 mm. The backlight module includes the back plate and a light source module, wherein the light source module is disposed on the plate body and adjacent to the inner side of the side wall.