Display Panel with Liquid Crystal Polarization and Quantum Rod Color Conversion
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Solution Overview
Problem
Current display technologies face challenges in achieving high color accuracy and efficiency, particularly in utilizing quantum rod technology to effectively convert blue light into various colors for improved display performance.
Innovation Solution
A display panel design incorporating a first liquid crystal layer that converts incident blue light into linearly polarized blue light and a second liquid crystal layer that controls the polarization state of the light incident to a quantum rod layer, allowing for the conversion of blue light into red and green colors by adjusting the deflection angles of liquid crystals, thereby controlling luminance and color output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If quantum rod technology is used to convert blue light into various colors, then color accuracy and display performance are improved, but the complexity of the display structure increases
Solution Approach 1:
The patent divides the display structure into multiple functional layers: a first liquid crystal layer for polarization control, a quantum rod layer for color conversion, and a second liquid crystal layer for additional polarization control. This segmentation allows each layer to perform its specific function efficiently, achieving high color accuracy while managing overall system complexity through modular design
Solution Approach 2:
The patent introduces liquid crystal layers as intermediary elements between the blue light source and the quantum rod layer. These liquid crystal intermediaries control the polarization state of light before it reaches the quantum rods, enabling precise control over which wavelengths are converted to what colors, thereby achieving high color accuracy without directly increasing quantum rod complexity
2Adaptability or versatility
If three basic color subpixels are used, then color display capability is achieved, but the aperture ratio is reduced
Solution Approach 1:
The patent extracts the color generation function from the traditional three-subpixel structure and concentrates it in the quantum rod layer. By using quantum rods to convert a single blue light source into multiple colors (red, green, blue), the design eliminates the need for three separate subpixels per pixel, thereby increasing the aperture ratio while maintaining full color display capability
Solution Approach 2:
The quantum rod layer serves multiple functions simultaneously: it converts blue light to red, green, and blue wavelengths, acts as a spectral splitter, and enables color control through polarization manipulation. This multi-functionality replaces what would traditionally require three separate subpixels, achieving color versatility with a single pixel structure and higher aperture ratio
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 enables the display panel to efficiently convert blue light into red and green colors, enhancing color accuracy and display performance while reducing the need for three basic color subpixels, thus improving aperture ratio and display efficiency.
Implementation Method 1
The first display structure is configured to convert an incident blue light ray into a linearly polarized blue light, and control a luminance of the first display structure by controlling deflection angles of liquid crystals in the first liquid crystal layer
Implementation Method 2
The second display structure is configured to receive the linearly polarized blue light that exits from the first display structure, and change polarization state of the linearly polarized blue light incident to the quantum rod layer by controlling deflection angles of liquid crystals in the second liquid crystal layer
Implementation Method 3
Because of the quantum confinement effect, the transport of the electrons and holes in its interior is confined, so the continuous energy band structure becomes discrete energy level structures. When the sizes of the quantum rods are different, the degrees of the quantum confinement of the electrons and the holes are different, and the discrete energy level structures are different. When excited by external energy, quantum rods of different sizes emit lights of different wavelengths, which are lights of various colors
Data Source
AI summary
The present disclosure provides a display device and display method. The display device includes: a first display structure and a second display structure. The second display structure is disposed on a first light exiting side of the first display structure. A quantum rod layer that is disposed on a second light exiting side of the second display structure. The first display structure is configured to convert an incident blue light ray into a linearly polarized blue light, and control a luminance of the first display structure by controlling a deflection angle of liquid crystal of the first display structure. The second display structure receives the linearly polarized blue light that exits from the first display structure, and changes polarization state of the linearly polarized blue light incident to the quantum rod layer by controlling deflection angle of liquid crystal of the second display structure, to in turn change a color of the light ray that exits from the quantum rod layer.