Liquid Crystal Module Coupling Device for LED Spacing Control
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Solution Overview
Problem
The existing liquid crystal display technology faces challenges in maintaining optimal coupling efficiency between the light guiding plate and the LED light source, as the distance between them affects the light coupling efficiency, and a close proximity can lead to light leakage or damage to the light guiding plate.
Innovation Solution
A coupling device with specific cross-sectional shapes (I-shaped, T-shaped, L-shaped, or U-shaped) is introduced to control the coupling distance between the light source and the light guiding device, featuring grooves that securely engage the light source and guiding plate, ensuring consistent and predetermined spacing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the distance between the light guiding plate and LED light source is reduced to improve coupling efficiency, then the coupling efficiency is improved, but light leakage or damage to the light guiding plate occurs
Solution Approach 1:
A coupling device is introduced as an intermediary component between the LED light source and the light guiding plate. This coupling device maintains a predetermined optimal coupling distance, ensuring efficient light coupling while preventing light leakage and damage to the light guiding plate that would occur with direct contact or excessive proximity.
2Object-affected harmful factors
If the distance between the light guiding plate and LED light source is increased to prevent light leakage, then light leakage is prevented, but coupling efficiency degrades
Solution Approach 1:
The coupling device serves as a mediator that precisely positions the LED light source at an optimal distance from the light guiding plate. This predetermined distance is carefully designed to be sufficient to prevent light leakage and damage, yet close enough to maintain high coupling efficiency, thus resolving the trade-off between these two competing requirements.
Solution Approach 2:
The coupling device establishes a specific parameter (predetermined coupling distance) that optimizes the balance between preventing light leakage and maintaining coupling efficiency. By controlling this distance parameter, the system achieves both safety and performance requirements simultaneously.
Data Source
AI summary
A liquid crystal module is disclosed. The liquid crystal module includes a light source, a light guiding device, and a coupling device. The light guiding device is arranged at a light emitting side of the light source and is spaced apart from the light guiding device by a distance. The coupling device is installed between the light source and the light guiding device for controlling a coupling distance therebetween. The coupling device keeps the coupling distance between a light guiding plate and a light source to remain a predetermined value. In this way, the coupling efficiency of the liquid crystal module is not affected by the difference of LEDs or heat inflation so as to enhance the coupling efficiency.