Polarizing Plate Conductive Pattern Layer for High Transmissivity
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Solution Overview
Problem
Existing polarizing plates and TFT substrates face challenges in achieving improved processability and transmissivity, particularly in efficiently manufacturing polarizing plates with conductive pattern layers that effectively transmit and reflect polarized light while minimizing manufacturing complexity and cost.
Innovation Solution
A polarizing plate with a conductive pattern layer featuring line-shaped structures and a nano-structure formed using a self-aligned block copolymer, where the pattern is configured to transmit first polarized light and reflect second polarized light, and a method involving the use of a guide pattern layer, trimming of barriers, and self-aligned block copolymer domains to enhance manufacturing efficiency and transmissivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional conductive pattern layer is used for polarizing plates, then the manufacturing process is simple, but the transmissivity and aperture ratio are insufficient
Solution Approach 1:
The conductive pattern layer is divided into first patterns (line-shaped structures) and second patterns (isolated structures on outer boundaries). This segmentation allows the first patterns to provide polarizing function with high transmissivity while the second patterns provide electrical isolation, thereby improving both transmissivity and manufacturing precision without complicating the overall process
Solution Approach 2:
The invention introduces a hierarchical structure where the first patterns consist of line-shaped structures with periods shorter than the wavelength of incident light. This dimensional approach at the nanoscale enables effective light polarization while maintaining high aperture ratio, resolving the contradiction between simple manufacturing and high transmissivity
2Manufacturing precision
If the period of line-shaped structures is increased to improve transmissivity, then the aperture ratio improves, but the ability to polarize light effectively decreases
Solution Approach 1:
The invention optimizes the period parameter of the line-shaped structures to be shorter than the wavelength of incident light. This parameter change ensures effective light polarization while maintaining high transmissivity. The specific dimensional parameter control allows simultaneous achievement of both polarization effectiveness and high aperture ratio
3Manufacturing precision
If complex patterning processes are used to improve the conductive pattern precision, then the transmissivity improves, but the manufacturing complexity and cost increase
Solution Approach 1:
The invention combines the formation of first patterns and second patterns into a single conductive pattern layer using a unified manufacturing process. This merging approach achieves high manufacturing precision for both pattern types while avoiding the need for separate complex patterning processes, thereby reducing manufacturing complexity and cost
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 provides improved processability and transmissivity for polarizing plates and TFT substrates, reducing manufacturing complexity and cost while enhancing the aperture ratio and luminance of display devices by effectively managing polarized light transmission and reflection.
Implementation Method 1
the first pattern configured to transmit first polarized light of the incident light therethrough and reflect second polarized light of the incident light that is perpendicular to the first polarized light
Implementation Method 2
reflect second polarized light of the incident light that is perpendicular to the first polarized light
Implementation Method 3
forming a nano-structure of a self-aligned block copolymer
Data Source
AI summary
A polarizing plate includes a substrate and a conductive pattern layer including a first pattern and a second pattern. The first pattern includes line-shaped structures disposed at intervals with a period shorter than a wavelength of incident light to be isolated from one another, the first pattern configured to transmit first polarized light of the incident light therethrough and reflect second polarized light of the incident light that is perpendicular to the first polarized light. The second pattern is disposed on an outer boundary of the first pattern, the second pattern isolated and insulated from the first pattern, the second pattern including a stem and at least one branch protruding from the stem toward the first pattern.