Backlight Module Bent Heat Dissipating Plate Narrow Frame
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Solution Overview
Problem
Existing liquid crystal display backlight modules face challenges in narrowing the frame without compromising mechanical strength and heat dissipation performance, as traditional methods either weaken the module's structure or inadequately reduce the frame size.
Innovation Solution
A backlight module design featuring a light guide plate, a glue frame, a bent heat dissipating plate, and locating blocks that position the glue frame and light source lamp on the heat dissipating plate, ensuring improved heat dissipation and mechanical strength while minimizing the frame size, by directly mounting the light source lamp on the heat dissipating plate and using a groove-shaped locating block to secure components without altering the main structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the back plate is removed to narrow the frame, then the frame width is reduced, but the mechanical strength of the backlight module is greatly weakened
Solution Approach 1:
The backlight module is divided into functional components: the heat dissipating plate serves as the structural backbone for mechanical strength, while the light guide plate and glue frame provide optical functions. This segmentation allows the back plate to be removed without compromising overall structural integrity.
Solution Approach 2:
The heat dissipating plate is designed to perform multiple functions simultaneously: it provides the primary structural support replacing the back plate's mechanical role, dissipates heat from the light source, and positions the light source lamp. This multi-functionality eliminates the need for the back plate while maintaining structural strength.
2Length of stationary object
If the glue frame is narrowed to reduce frame size, then the frame width is reduced to a lesser extent, but the mechanical strength and heat dissipation are compromised
Solution Approach 1:
The heat dissipating plate is designed to perform multiple functions simultaneously: it provides the primary structural support replacing the back plate's mechanical role, dissipates heat from the light source, and positions the light source lamp. This multi-functionality eliminates the need for the back plate while maintaining structural strength.
3Length of stationary object
If the side wall of the heat dissipating plate is made thinner to narrow the frame, then the frame width is reduced, but the heat dissipating effect is negatively influenced
Solution Approach 1:
The heat dissipating plate features a bent configuration with a bending line, creating a three-dimensional structure that enhances heat dissipation surface area and efficiency. The bent design allows heat to be dissipated more effectively while maintaining a narrow overall frame profile, as the enhanced dissipation occurs through the bent geometry rather than increased plate thickness.
Data Source
AI summary
The present disclosure relates to a backlight module and a liquid crystal display comprising the same. The backlight module comprises a light guide plate, a glue frame, a bent heat dissipating plate, a locating block matching with the heat dissipating plate to fix the glue frame, and a light source lamp arranged on the sidewall at the light-incoming side of the light guide plate of the heat dissipating plate, which faces the light guide plate. The locating block is of a groove-shaped structure comprising a first wall and a second wall. In the assembly process, the locating block is arranged on the top of the sidewall of the heat dissipating plate, on which the light source lamp is provided. The first wall joints the glue frame, and the second wall abuts against the light guide plate. The backlight module according to the present disclosure is able to narrow the frame of the liquid crystal display without leading to other problems.