LCD Panel with Aligned Color Quantum Rods
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Solution Overview
Problem
Conventional LCD panels face challenges with low color gamut and high production costs due to complex alignment processes and limited color representation capabilities.
Innovation Solution
An LCD panel design incorporating color quantum rods aligned with liquid crystal molecules, utilizing a switch array layer with thin film transistors and polarizers to control brightness and color output, mixed using a One Drop Filling process, enhancing polarization efficiency and color gamut.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional thin film extension technology is used for quantum rod alignment, then alignment can be achieved, but the process becomes more complex and alignment efficiency is low
Solution Approach 1:
The patent extracts the alignment function from the complex thin film extension process and implements it through a simple rubbing treatment on the substrate. This removes the need for extensive thin film production and complex extension technology, achieving quantum rod alignment through direct mechanical rubbing of the substrate surface, thereby simplifying the overall process while maintaining alignment effectiveness.
Solution Approach 2:
The patent replaces the complex thin film extension mechanism with a direct mechanical rubbing approach. Instead of using multiple thin film layers and extension technologies, the invention uses simple mechanical rubbing treatment on the substrate to create alignment marks that guide quantum rod orientation, substituting a complex mechanical system with a simpler one.
2Adaptability or versatility
If conventional display devices use limited color representation, then device complexity is reduced, but color gamut and greyscale variety are limited
Solution Approach 1:
The patent uses composite quantum rod materials with different aspect ratios and orientations to achieve multiple colors and greyscale variations. By combining quantum rods with different physical characteristics (aspect ratios, orientations) in the same display structure, the invention creates a composite material system that provides extensive color variety without requiring separate display devices for each color.
Solution Approach 2:
The patent applies local quality by varying the orientation and aspect ratio of quantum rods in different regions of the display. Different areas have quantum rods with specific orientations (e.g., horizontal, vertical, diagonal) to produce different colors and greyscale values, allowing each local region to have optimized properties for its specific function while maintaining overall system coherence.
3Reliability
If quantum rods are not aligned, then manufacturing is simpler, but optical anisotropy cannot be fully utilized and polarization efficiency is low
Solution Approach 1:
The patent performs preliminary alignment action by applying rubbing treatment to the substrate before quantum rod deposition. This preliminary mechanical rubbing creates alignment marks and surface characteristics that guide quantum rod orientation during the deposition process, ensuring proper alignment is established in advance rather than requiring complex post-processing alignment steps.
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 improves brightness and color gamut by aligning color quantum rods with liquid crystal molecules, increasing polarizer transmittance and reducing production costs, while allowing for more efficient color representation and lower production expenses.
Implementation Method 1
when the thin film transistors are in an off state, from the second substrate to the first substrate, the color quantum rods are arranged in twist with the liquid crystal molecules
Implementation Method 2
under an irradiation of a backlight source, a polarization direction of the second polarizer is identical to the major axis direction of the color quantum rods near the second substrate
Data Source
AI summary
An LCD panel and a method for manufacturing are provided. The panel includes: a first substrate and a second substrate disposed opposite to the first substrate; a liquid crystal layer comprising a plurality of liquid crystal molecules and color quantum rods mixed in the liquid crystal molecules, wherein both the color quantum rods and the liquid crystal molecules have a major axis, and a major axis direction of the color quantum rods is identical to a major axis direction of the liquid crystal molecules.