Ambient Light Backlight Module Using Optical Fiber Collection
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Solution Overview
Problem
Conventional backlight modules for LCDs have poor color performance and high energy consumption due to the use of LEDs or CCFLs, which struggle to produce real colors and efficient light output.
Innovation Solution
A backlight module that collects ambient light using optical fibers, a fiber light-outputting substrate, and fiber fixing collars made of soft materials to precisely position and secure the optical fibers, reducing energy consumption and enhancing color gamut.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If LEDs or CCFLs are used as light sources in the backlight module, then the backlight can be provided for the liquid crystal display panel, but the color performance is poor and the color gamut is narrow
Solution Approach 1:
The patent extracts the light source function from traditional LEDs or CCFLs and relocates it to ambient light collection. Optical fibers are used to extract and transport ambient light into the display device, replacing the need for internal light-generating components. This extraction principle resolves the contradiction by eliminating energy-consuming light sources while maintaining illumination function.
Solution Approach 2:
The patent introduces optical fibers as an intermediary medium to transfer ambient light from the external environment into the display device. The optical fibers act as a bridge between the external light source and the internal display structure, enabling the system to utilize external light resources instead of generating light internally, thereby improving color performance and reducing energy consumption.
2Use of energy by stationary object
If LEDs or CCFLs are used as light sources, then backlight can be provided, but energy consumption is high especially for large-size LCD
Solution Approach 1:
The patent applies the self-service principle by enabling the display device to utilize ambient light from its surrounding environment. Instead of relying on energy-consuming internal light sources, the system serves itself by capturing and redirecting available ambient light through optical fibers, thereby reducing energy consumption while maintaining adequate backlight brightness.
Solution Approach 2:
The optical fiber system provides multi-functionality by serving both as a light transmission medium and as a structural component for ambient light integration. The same optical fiber infrastructure that transmits light can be configured to collect from various directions and distribute light uniformly, achieving both illumination and energy efficiency goals simultaneously.
3Use of energy by stationary object
If optical fibers are used to collect and transmit ambient light, then energy consumption is reduced and color gamut is improved, but the positioning precision of optical fibers is difficult to achieve
Solution Approach 1:
The patent replaces mechanical positioning methods with a laser-based alignment system. Instead of relying on manual or mechanical positioning of optical fibers, a laser guide is used to provide visual feedback for precise alignment. The laser beam serves as a reference marker that enables accurate positioning of optical fiber light-emitting ends relative to the light guide plate light-inputting surface, thereby achieving high positioning precision without complex mechanical systems.
4Manufacturing precision
If fiber fixing collars made of soft material are used, then optical fibers can be precisely positioned and fixed, but the structure becomes more complex
Solution Approach 1:
The patent employs flexible fixing collars made of soft material to secure the optical fibers. These flexible collars can be deformed during installation to accommodate the optical fibers, then return to their original shape to provide secure fixation. The flexibility of these thin-walled structures enables precise positioning and stable fixation of optical fibers while maintaining a relatively simple overall structure, as the collars can be easily integrated into the existing optical fiber 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 solution significantly reduces energy consumption and improves color accuracy by utilizing ambient light, ensuring high efficiency in light energy utilization and display quality.
Implementation Method 1
a plurality of optical fibers connected to the light collector; a fiber light-outputting substrate connected to the optical fibers, wherein the fiber light-outputting substrate includes a plurality of light-outputting openings configured to output the light rays transmitted by the optical fibers
Data Source
AI summary
The present invention provides a backlight module and a display apparatus. The display apparatus comprises the backlight module and a display panel. The backlight module comprises a light collector, optical fibers, a fiber light-outputting substrate, a light guide plate and fiber fixing collars. The optical fibers are connected between the light collector and the fiber light-outputting substrate. The light guide plate is disposed at one side of the fiber light-outputting substrate. The fiber fixing collars are attached to light-emitting ends of the optical fibers for fixing the optical fibers to the fiber light-outputting substrate. The present invention can use ambient light rays to form a backlight source.