Backlight Module Frame Buffer for Impact Protection
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Solution Overview
Problem
Conventional edge-lit backlight modules lack buffer protection for the light guide plate, leading to displacement and damage during free-fall tests, which compromises the reliability of the module.
Innovation Solution
A backlight module design featuring a frame with buffer portions that cover the sides of the light guide plate, absorbing impact forces and reducing the risk of light-emitting components being displaced or detached, while maintaining the collinearity of the light-emitting components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the light-emitting components are disposed on the side surface of the light guide plate in a conventional edge-lit backlight module, then the thickness of the backlight module is reduced and the number of light-emitting components is minimized, but the light guide plate lacks buffer protection and is easily displaced during free-fall tests, causing damage to the light-emitting components
Solution Approach 1:
The patent introduces buffer portions on the frame that contact the light guide plate to provide beforehand cushioning protection. These buffer portions absorb impact forces during free-fall tests before the impact can reach the light-emitting components, preventing displacement and damage while maintaining the thin-profile edge-lit structure
2Device complexity
If no frame structure is provided to surround the light guide plate and light-emitting components, then the device complexity is reduced, but the light guide plate cannot provide buffer protection and is easily displaced during reliability tests
Solution Approach 1:
The frame structure is segmented into functional components: the main frame body and the buffer portions. The buffer portions are specifically designed as separate elements that contact the light guide plate to provide protection, while the main frame provides structural support. This segmentation allows the frame to provide reliable protection without excessive complexity
3Ease of manufacture
If the light guide plate is freely positioned without buffer protection, then the ease of manufacture is improved, but the light-emitting components are vulnerable to impact forces during free-fall tests and may fall off
Solution Approach 1:
The buffer portions act as intermediary elements between the light guide plate and the light-emitting components. During impact events, the buffer portions absorb and dissipate impact forces, serving as a mediator that protects the vulnerable light-emitting components from direct impact while allowing the light guide plate to remain freely positioned for ease of assembly
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The buffer portions effectively absorb impact forces, reducing the risk of light-emitting components falling off and improving the reliability of the backlight module by dispersing impact forces and maintaining the alignment of light-emitting components.
Implementation Method 1
the buffer portion is located on a side of the opening and contacts the light guide plate... the buffer portion effectively absorb impact forces
Data Source
AI summary
A backlight module and a display device are provided, and the backlight module includes a light guide plate, a plurality of light-emitting components, and a frame. The light guide plate includes a first side, a second side, and two third sides. The light-emitting components are disposed on the first side, and light generated from the light-emitting components enters the light guide plate from the first side. The frame covers the second side and the third sides and includes an opening and at least one buffer portion. The light-emitting components are disposed in the opening, and the buffer portion is disposed on a side of the opening and contacts the light guide plate.