Quantum Rod Liquid Crystal Display Panel Alignment
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Solution Overview
Problem
Current LCD technologies face challenges with low color gamut and high production costs due to complex QR alignment processes and limited color representation.
Innovation Solution
The integration of quantum rods (QRs) aligned with liquid crystal molecules in specific pixel positions within an LCD panel, utilizing a method that includes ink-jetting and lithography to enhance polarization efficiency and color representation, reduces production complexity and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If thin film extension technology is used to align quantum rods, then quantum rod alignment is achieved, but production process complexity increases and alignment efficiency decreases
Solution Approach 1:
The patent removes the extension thin film layer from the production process entirely. Instead of using thin film extension technology to align quantum rods, the invention directly forms quantum rods with controlled orientations through a simplified process that eliminates the need for separate extension film production and integration steps.
Solution Approach 2:
The quantum rod layer itself serves multiple functions: it provides both the alignment reference and the optical functionality. The quantum rods are formed to have specific orientations that directly enable their polarizing function without requiring additional alignment layers or structures.
2Manufacturing precision
If thin film extension technology is used to align quantum rods, then quantum rod alignment is achieved, but production cost increases
Solution Approach 1:
The patent removes the extension thin film layer from the production process entirely. Instead of using thin film extension technology to align quantum rods, the invention directly forms quantum rods with controlled orientations through a simplified process that eliminates the need for separate extension film production and integration steps.
Solution Approach 2:
The invention uses a simpler, more cost-effective process that does not require expensive extension thin film materials and equipment. The quantum rods are formed directly in their final positions and orientations using a more economical approach that reduces material and processing costs.
3Ease of manufacture
If conventional LCD technology is used, then production is simpler, but color gamut is limited
Solution Approach 1:
The patent changes the optical parameters of the display by introducing quantum rods with specific orientations and optical properties. The quantum rods provide enhanced color saturation and gamut through their unique optical anisotropy and polarizing effects, allowing for more vivid and accurate color reproduction while maintaining a relatively simple production process.
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 approach enhances the transmittance of polarizers and color gamut, resulting in improved brightness and color vividness while lowering production costs by eliminating the need for extension thin films and alignment technologies.
Implementation Method 1
The structural anisotropy results in an optical anisotropy, which is unique to QR materials. The optical anisotropy refers to the fact that the direction of the long axis of the QR is much more capable than the direction perpendicular to the long axis in light absorption and emission.
Implementation Method 2
The direction of the long axis of the QR is much more capable than the direction perpendicular to the long axis in light absorption and emission.
Implementation Method 3
When the TFTs are closed, the QRs, along with the liquid crystal molecules, align in a twisted manner spanning from the second substrate to the side of the first substrate. Under light of a backlight source, the polarization direction of the second polarizer is the same as the long axes of the QRs close to the side of the second substrate.
Implementation Method 4
Under light of a backlight source, the polarization direction of the second polarizer is the same as the long axes of the QRs close to the side of the second substrate. The QRs rotate with the liquid crystal molecules, so that the direction of the long axes of the QRs close to the side of the first substrate is the same as the polarization direction of the first polarizer.
Data Source
AI summary
The present invention proposes an LCD panel and a method for forming the same. The LCD panel includes an isolator disposed between two adjacent liquid crystal units. Liquid crystal molecules of red liquid crystal units and green liquid crystal units are mixed with quantum rods (QRs) of corresponding colors. The red liquid crystal units correspond to a position of the red pixels, the green liquid crystal units correspond to a position of the green pixels. The QRs and liquid crystal molecules have long axes and directions of the long axes of QRs and liquid crystal molecules are the same.