Dye Polarizer Fabrication via Stacked Dichroic Dye Layers
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Solution Overview
Problem
State-of-the-art dye polarizers have a narrow absorption wavelength of light, leading to low light utilization and polarization efficiency, which affects the performance of liquid crystal panels.
Innovation Solution
A fabrication method for a dye polarizer involving a dye mixture of multiple dichroic dyes that absorb visible light across all wavelengths, combined with a reactive monomer, is used to form a polarization film solution, which is coated and cured multiple times to create a stacked dye polarizer, increasing the degree of polarization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single dichroic dye is used in the polarizer, then the manufacturing process is simple, but the absorption wavelength range is narrow leading to low light utilization
Solution Approach 1:
The patent combines multiple dichroic dyes (at least two different dyes with different absorption characteristics) into a single polarizer structure. This merging of multiple dye components allows the polarizer to absorb light across a broader wavelength range, significantly improving light utilization while maintaining a relatively simple manufacturing process by coating all dyes together in one layer or stacked layers.
2Reliability
If multiple layers of dye polarization film are stacked to increase polarization degree, then the polarization efficiency improves, but the device complexity increases
Solution Approach 1:
The patent divides the polarizer into multiple stacked layers of dye polarization films, where each layer contributes to the overall polarization effect. By segmenting the polarizer into discrete layers (with at least one layer containing multiple dichroic dyes), the structure achieves high polarization efficiency through cumulative light absorption while maintaining manufacturing simplicity through standardized layer fabrication processes.
3Reliability
If additional protective layers are added to improve polarizer durability, then the reliability improves, but the display panel thickness increases
Solution Approach 1:
The patent employs thin film structures for the dye polarization layers that inherently provide durability while maintaining thinness. The use of multiple thin layers of dye-polymer composite films creates a robust polarizer structure that resists degradation without requiring additional thick protective layers, thus improving durability while keeping the display panel thin.
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 method enhances light utilization and polarization efficiency by expanding the wavelength range of light absorption and improving the durability of the polarizer, allowing for thinner display panels without the need for additional protective layers.
Implementation Method 1
the dye mixture functions to absorb visible light of all wave band
Implementation Method 2
allowing the reactive monomer to cure on the base to form a dye polarization film
Implementation Method 3
curing is conducted by applying heat to the reactive monomer to cure the reactive monomer
Implementation Method 4
alignment is carried out as a light alignment operation conducted with linearly polarized light
Data Source
AI summary
A fabrication method of a dye polarizer and a display panel are provided. The fabrication method includes: dissolving a dye mixture and a reactive monomer in a solvent to form a polarization film solution, in which the dye mixture is formed by mixing multiple dichroic dyes and the dye mixture functions to absorb visible light of all wave band; coating the polarization film solution one a base, followed by alignment, to allow the reactive monomer to cure on the base; and repeating the step of forming the dye polarization film for n times to form a dye polarizer including n+1 stacked layers of the dye polarization, where n is a nature number greater than or equal to 2. The display panel includes the dye polarizer that is formed with the fabrication method described above.