Optical Fiber Bundle Backlight Module for Display Uniformity
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Solution Overview
Problem
Traditional edge-type backlight modules for liquid crystal displays are inconvenient for flexible production due to the large size of light emitting diode chips, which require integration into circuit boards, leading to inefficiencies in space utilization and light distribution.
Innovation Solution
The use of optical fiber bundles with a light-guiding section and light-outputting section, arranged in a staggered manner along the edge of a light guide plate, replaces traditional light emitting diodes, allowing for a more flexible and efficient light distribution system by changing the light emitting direction from the end to the border, enabling better space utilization and improved light uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional light emitting diode chips are used in edge-type backlight modules, then the light source can be provided, but the production flexibility is reduced due to large chip size and circuit board integration requirements
Solution Approach 1:
The patent extracts the light-emitting function from the complex LED chip and circuit board system, concentrating it into a simple optical fiber bundle that can be directly disposed on the light guide plate without requiring circuit board integration, thereby simplifying the overall structure and improving production flexibility
Solution Approach 2:
The patent replaces the electrical-mechanical LED chip system with an optical fiber-based light transmission system, substituting the need for electrical connections and circuit boards with a purely optical solution that is easier to manufacture and integrate
2Area of stationary object
If traditional light emitting diode chips are used, then the light source is provided, but the space utilization is inefficient due to large chip size
Solution Approach 1:
The patent uses optical fiber bundles that can be arranged in various patterns (such as array arrangements) to replicate and distribute light sources efficiently across the light guide plate, maximizing space utilization while maintaining a compact form factor
3Ease of manufacture
If optical fiber bundles are used instead of light emitting diode chips, then the production flexibility is improved, but the light distribution uniformity needs to be optimized
Solution Approach 1:
The patent segments the light source into multiple optical fiber bundles arranged in specific patterns (such as staggered or array arrangements), which allows for optimized light distribution across the light guide plate while maintaining production flexibility. The segmentation enables better control over light uniformity
Solution Approach 2:
The patent applies different arrangement patterns to different regions of the light guide plate to optimize local light distribution characteristics, ensuring uniform illumination across the entire display area while maintaining the overall production flexibility benefits
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
This solution simplifies the light collection structure, enhances space utilization, and improves light uniformity by distributing light more efficiently across the display panel, making the backlight module more flexible and effective.
Implementation Method 1
each of the optical fiber bundles comprises light-guiding section and light-outputting section
Implementation Method 2
a refractive index of the optical fiber inner layer is greater than a refractive index of the first optical fiber outer layer
Data Source
AI summary
The present disclosure is related to a backlight module and a display apparatus thereof. The display apparatus comprises a display panel and a backlight module. The backlight module comprises a light guide plate having a light incident side, a plurality of optical fiber bundles disposed at an edge of the light incident side of the light guide plate. Each of the optical fiber bundles comprises a light-guiding section and a light-outputting section, and a plurality of light-outputting sections of the plurality of optical fiber bundles are arranged at the light incident side of the light guide plate.