Quantum Film Backlight Module Color Gamut
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Solution Overview
Problem
Current methods for enhancing the color gamut of display devices, such as changing LED types or adjusting color film thickness, are time-consuming and costly, hindering rapid and efficient product marketing.
Innovation Solution
A backlight module incorporating a quantum film between a light source and a light guide plate, where the quantum film is excited by monochromatic or polychromatic light to emit secondary red and green light, increasing the color gamut by altering the light composition ratio, similar to high-color-gamut LEDs with RG phosphors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If LED type is changed or color film thickness is adjusted to improve color gamut, then color gamut is improved, but development time and cost increase
Solution Approach 1:
The patent changes the optical parameters of the backlight module by introducing a quantum film that converts the spectrum characteristics. Instead of changing LED types or adjusting color film thickness, the invention uses quantum dots to convert blue light to red and green light, achieving desired color gamut through parameter transformation rather than component replacement
Solution Approach 2:
The quantum film acts as an intermediary substance between the blue LED light source and the display panel. It mediates the light conversion process by absorbing blue light and emitting red and green light, enabling high color gamut without directly modifying the LED or color film layers
2Manufacturing precision
If high color gamut LED is used to improve color gamut, then color gamut is improved, but product cost increases
Solution Approach 1:
The patent replaces expensive high color gamut LEDs with a more cost-effective solution using standard blue LEDs combined with a quantum film. The quantum film, made from quantum dots, provides the necessary spectrum conversion at lower cost, achieving the same color gamut improvement without investing in premium LED components
Solution Approach 2:
The invention uses a composite structure combining blue LED light source with quantum film material. This composite approach leverages the advantages of both components: the成熟 and cost-effective blue LED technology combined with the superior color conversion properties of quantum dots, achieving high color gamut at lower overall cost
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 effectively increases the color gamut of display devices to meet customer demands, as demonstrated by experiments showing a color gamut increase from 73.32% to 75.75% when using the quantum film, thereby improving product competitiveness.
Implementation Method 1
a quantum film disposed between the light source and the light guide plate, wherein the quantum film is configured for being excited by the first wave-band light emitted from the light source and emitting a second wave-band light
Data Source
AI summary
Disclosed is a backlight module, which includes: a light guide plate having a light incident surface; a light source disposed as facing to the light incident surface and configured for emitting a first wave-band light. The backlight module further includes: a quantum film disposed between the light source and the light guide plate. The quantum film is configured for being excited by the first wave-band light emitted from the light source and emitting a second wave-band light. By disposing the quantum film in the backlight module, the color gamut of LCD is improved.