Integrated Polarizer Substrate for Thin Display Panels
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Solution Overview
Problem
The manufacturing process of polarizers for liquid crystal display panels is complicated due to the need for separate film formation of polarization and compensation parts, resulting in a thick polarizer.
Innovation Solution
A polarizer with an integrated substrate structure, where lyotropic liquid crystal molecules form both the polarization and compensation parts, with a dichroic material dispersed in one part to enhance polarization and excluded in another part for compensation, is developed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate film formation is used for polarization part and compensation part, then the polarizer can achieve required optical functions, but the manufacturing process becomes complicated and the thickness increases
Solution Approach 1:
The patent merges the polarization part and compensation part into a single integrated film formed by one coating process. The substrate includes both functional regions in one continuous layer, eliminating the need for separate film formation processes while maintaining both optical functions simultaneously.
Solution Approach 2:
The single substrate film serves multiple functions by incorporating different molecular orientations and compositions within the same layer. The first region provides polarization function while the second region provides compensation function, making the substrate universal for both optical requirements.
2Reliability
If separate film formation is used for polarization part and compensation part, then the polarizer can achieve required optical functions, but the thickness of the polarizer becomes thick
Solution Approach 1:
The patent combines multiple functional layers into a single integrated film, reducing the total thickness by eliminating interfaces and redundant structural elements between separate films while preserving all necessary optical functions within the unified structure.
3Ease of manufacture
If integrated substrate structure is used, then the manufacturing process is simplified and thickness is reduced, but the dichroic material must be selectively dispersed
Solution Approach 1:
The patent applies local quality by creating regions with different dichroic material concentrations within the same substrate film. The first region contains dispersed dichroic material for polarization function, while the second region has minimal or no dichroic material for compensation function, achieving spatially varying properties in a single integrated structure.
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 simplifies the manufacturing process, reduces the thickness of the polarizer, and improves the production yield by integrating the polarization and compensation functions into a single substrate layer.
Implementation Method 1
Liquid crystal molecules in a vertical alignment (VA) liquid crystal display panel have birefringence characteristics
Implementation Method 2
The first part includes lyotropic liquid crystal molecules and is dispersed with a dichroic material
Data Source
AI summary
Polarizers, manufacturing methods thereof, and display panels are provided. The polarizer includes a substrate having an integrated structure. The substrate includes a first part and a second part disposed on a side of the first part. The first part includes lyotropic liquid crystal molecules and is dispersed with a dichroic material. The second part includes lyotropic liquid crystal molecules without the dichroic material. The first part functions as a polarization part of the polarizer, and the second part functions as a compensation part of the polarizer.