LCD Quantum Rod Color Layer Blue Backlight
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Solution Overview
Problem
Conventional LCD devices face challenges in achieving high color saturation due to light absorption between RGB sub-pixels, requiring higher backlight intensity.
Innovation Solution
A liquid crystal display device utilizing a blue light source backlight module with a color layer comprising red and green quantum rod layers and a transparent color filter, where the major axis directions of these layers are perpendicular to the lighting direction, and a polarized layer is used to enhance light transmission and reduce energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a white light backlight module is used with RGB color film substrate to form pixel units, then the screen can display colors, but light is absorbed between R, G, B sub-pixels requiring higher backlight intensity and achieving higher color saturation becomes difficult
Solution Approach 1:
The patent changes the fundamental parameter of the light source from white light to blue light, and changes the color generation mechanism from RGB absorption to quantum rod wavelength conversion. This parameter change eliminates the light absorption problem between sub-pixels and achieves high color saturation with lower backlight intensity
Solution Approach 2:
The patent uses composite quantum rod structures with different wavelength conversion properties (red and green quantum rods) on the blue light backlight, creating a composite material system that converts blue light into full-color display without the absorption losses of traditional RGB filters
2Use of energy by moving object
If quantum rod layers are used to convert blue light to reduce energy consumption, then light energy consumption is reduced, but the configuration complexity of the color layer increases
Solution Approach 1:
The patent extracts the color filtering function from the traditional color film substrate and replaces it with quantum rod wavelength conversion layers. This extraction eliminates the need for complex RGB filter arrangements and reduces the overall structural complexity while maintaining color generation capability
Solution Approach 2:
The patent applies different quantum rod layers (red and green) in specific local positions on the blue light backlight, with each layer having specialized wavelength conversion properties. This local quality approach allows efficient energy conversion while organizing the complexity in a manageable, localized manner
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 configuration significantly reduces light energy consumption while improving color saturation and contrast by minimizing fluorescence absorption and residual blue light effects, resulting in enhanced color purity and luminous efficiency.
Implementation Method 1
The array substrate includes a blue light filter layer and a color unit layer including a red quantum rod layer and a green quantum rod layer
Implementation Method 2
a polarized layer which is laminated on the color layer. The polarizing layer is disposed adjacent to the liquid crystal layer
Data Source
AI summary
The present invention provides a liquid crystal display device including a backlight module and a liquid crystal panel including a color film substrate, an array substrate, and a liquid crystal layer sandwiched between the color film substrate and the array substrate, the backlight module is a blue light source; the array substrate includes a glass substrate and a color layer provided on the glass substrate and a polarized layer laminated on the color layer. The polarized layer is disposed adjacent to the liquid crystal layer. The color layer includes a blue light filter layer and a color unit layer which is laminated on the blue light filter layer and on the back of the surface of the polarized layer. The color unit layer includes a plurality of color units, and each of the color units includes a red color quantum rod layer, a green quantum rod layer and a transparent color filter layer. The present invention also discloses an electronic equipment.