Backlight Module Light Guide Plate Positioning Structure
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Solution Overview
Problem
The existing backlight modules for liquid crystal display devices lack a direct fixing structure between the light guide plate and the glue frame, leading to instability and increased assembly difficulty, which affects the performance and efficiency of the module.
Innovation Solution
A backlight module design that includes a glue frame with a loading plate and a limiting plate misaligned and oppositely located, with a limiting block and slot on the light guide plate, providing direct positioning and support to stabilize the light guide plate on the glue frame, and using double-side tapes to fix the backlight source, limiting plate, and end wall, effectively limiting movement and enhancing assembly stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If no direct fixing structure exists between light guide plate and glue frame, then the structure is simpler, but the assembly stability and efficiency are reduced
Solution Approach 1:
The patent merges the light guide plate and glue frame into an integrated structure where the light guide plate is directly fixed to the glue frame through positioning structures (positioning holes and positioning protrusions). This eliminates the need for separate fixing components while ensuring assembly stability, thus resolving the contradiction between structural simplicity and assembly reliability.
2Quantity of substance
If no direct fixing structure exists between light guide plate and glue frame, then fewer components are used, but the assembly difficulty increases
Solution Approach 1:
By integrating the positioning structures directly into the light guide plate and glue frame components, the patent reduces the total number of separate fixing components needed. The positioning holes and protrusions are built into the main components themselves, simplifying the overall component count while actually reducing assembly difficulty through automated positioning.
Solution Approach 2:
The positioning holes and protrusions are pre-designed and pre-positioned on the light guide plate and glue frame before assembly. This preliminary action of creating built-in positioning features ensures that components automatically align during assembly, significantly reducing assembly difficulty without requiring additional fixing components.
3Reliability
If positioning structures are added between light guide plate and glue frame, then the assembly stability is improved, but the device complexity increases
Solution Approach 1:
The positioning structures (holes and protrusions) are merged into the main body of the light guide plate and glue frame components. Rather than being separate附加 components, they are integral features of the existing parts, thus improving assembly stability without significantly increasing overall device complexity.
Data Source
AI summary
The present invention provides a backlight module, comprising a glue frame, a light guide plate and a backlight source, wherein the glue frame comprises two opposite side walls and end walls connecting with the two side walls, and a loading plate is located at an inner side of the end wall, and a limiting plate is connected between the two side walls, and the limiting plate and the loading plate are respectively located at two opposite sides of the light guide plate, and the light guide plate comprises an incident surface, a limiting block and a limiting slot, and the limiting block and the limiting slot are respectively located on two opposite surfaces of the light guide plate and close to one end of the light guide plate provided with the incident surface. The present invention further provides a display device.