Backlight Module White Light Generation Without Quantum Dot Film
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Solution Overview
Problem
Traditional Mini LED backlight modules require a quantum dot film to convert blue light to white, increasing costs and complexity.
Innovation Solution
A backlight module with multiple light-emitting sets, each comprising at least two lamp sources emitting different colors to directly produce white light, eliminating the need for a quantum dot film, and including a diffuser plate and optical film for even light distribution and increased brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a quantum dot film is used to convert blue light to white light, then the backlight module can achieve white light output, but the cost of the backlight assembly increases
Solution Approach 1:
The backlight module segments the white light generation process into multiple independent light-emitting sets, each containing lamp sources that emit different colors (blue, green, red). These segmented light sources directly combine to form white light, eliminating the need for a quantum dot film and reducing manufacturing costs while maintaining white light output quality
Solution Approach 2:
The patent merges multiple lamp sources emitting different colors (blue, green, red) within each light-emitting set to directly produce white light. This combining approach replaces the quantum dot film conversion method, achieving the same white light output function while reducing material costs and simplifying the manufacturing process
2Illumination intensity
If a quantum dot film is used for light conversion, then white light can be obtained, but the structure of the backlight module becomes more complex
Solution Approach 1:
The patent extracts and removes the quantum dot film from the backlight module structure. By using multiple lamp sources that directly emit different colors which combine to form white light, the design eliminates the light conversion layer, simplifying the overall structure while maintaining the white light output function
Solution Approach 2:
The backlight module is segmented into multiple light-emitting sets with discrete lamp sources emitting different colors. This segmentation approach eliminates the need for a quantum dot film layer, reducing structural complexity while achieving white light through direct combination of colored lights from the segmented sources
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
Simplifies the backlight module structure, reduces production costs, and enhances brightness and color gamut, enabling the module to be adapted for various scenarios.
Implementation Method 1
The multiple light-emitting sets each include at least two lamp sources, and the at least two lamp sources are configured to emit different colors to cooperate to emit a white light
Implementation Method 2
a quantum dot film is in cooperation with a blue backlight for conversion to obtain a white light
Implementation Method 3
a diffuser plate and an optical film, wherein the diffuser plate and the optical film are stacked
Data Source
AI summary
A backlight module and a display panel are provided. The backlight module includes a backplate, multiple light-emitting sets, a diffuser plate, and an optical film. The diffuser plate and the optical film are stacked. The multiple light-emitting sets are fixedly coupled to the backplate and arranged in array on the backplate. The multiple light-emitting sets are disposed in a gap between the diffuser plate and the backplate. The multiple light-emitting sets each include at least two lamp sources, and the at least two lamp sources are configured to emit different colors to cooperate to emit a white light.