Backlight Fastening Module for Display Light-Guiding Plate
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Solution Overview
Problem
Large-sized thin displays face issues with deformation of light-guiding plates due to high-wattage LEDs, leading to inhomogeneous light distribution and increased manufacturing costs due to the need for custom fastening structures for varying screen sizes.
Innovation Solution
A backlight component with a fastening module comprising interconnected plates that securely sandwich a light-guiding plate, allowing for adjustable thickness and size compatibility, reducing manufacturing costs and preventing light leakage through heat dissipation enhancements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If high-wattage and high-luminescent LEDs are applied to distribute light over the whole light-guiding plate, then the light distribution coverage is improved, but the light-guiding plate deforms and bends easily due to heat from the LEDs
Solution Approach 1:
The fastening structure is divided into multiple independent plates (first plate, second plate, third plate) connected together, forming a modular system that can securely hold the light-guiding plate while distributing heat dissipation pressure across multiple contact points
Solution Approach 2:
The fastening module acts as an intermediary structure between the LED light source and the light-guiding plate, providing mechanical support and heat dissipation pathways that prevent direct thermal deformation of the light-guiding plate
2Illumination intensity
If the contact areas between the light-guiding plate and the LEDs are increased to meet large-sized display requirements, then the light distribution coverage is improved, but the light-guiding plate thickness is reduced making it more prone to deformation
Solution Approach 1:
The fastening structure uses multiple separate plates (first plate, second plate, third plate) that can be independently positioned and connected, allowing secure attachment to thin light-guiding plates without requiring increased plate thickness
Solution Approach 2:
The fastening module extends in multiple spatial dimensions with plates arranged in a three-dimensional configuration, providing sufficient contact area and mechanical support without increasing the thickness of the light-guiding plate itself
3Illumination intensity
If the periphery of the light-guiding plate is deformed to form a wave-like profile, then the light distribution is improved, but light-leak occurs at the periphery of the screen
Solution Approach 1:
The fastening module serves as an intermediary structure that maintains the light-guiding plate in a flat, stable position, preventing peripheral deformation that would cause light-leak while still allowing optimal light distribution across the screen
4Adaptability or versatility
If a new fastening structure is developed for every new-sized screen to match the screen dimensions, then the screen size adaptability is improved, but the manufacturing cost increases due to waste of money, time, and materials
Solution Approach 1:
The fastening module is designed as a universal structure with plates of standard dimensions that can be used across different screen sizes. The modular design allows the same basic structure to accommodate various light-guiding plate sizes by simply adjusting the arrangement or number of modules, eliminating the need to develop new fastening structures for each screen size
Solution Approach 2:
The fastening structure is segmented into independent, standardized plates that can be combined in different configurations. This modular approach allows a single standardized module design to serve multiple screen sizes, reducing manufacturing complexity and cost
Data Source
AI summary
A backlight component includes a back plate, a fastening module, a light source and a light-guiding plate. The fastening module includes a first plate, a second plate and a third plate. The first plate, the second plate and the third plate define a receiving space. The light source is securely assembled at one side of the second plate and facing toward the receiving space. The light-guiding plate is slidably assembled in the receiving space of the fastening module, and sandwiched between the first plate and the third plate. Accordingly, when the thickness of the light-guiding plate is changed, only the second plate of the fastening module need be changed; additionally, the length of the fastening module can be normalized to apply for display devices with different sizes. Consequently, the manufacturing cost of display devices can be reduced, and the fastening module is applicable to different kinds of display devices.