Multi-Layer Metal Wire Grid Polarizer for LCD
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing polarizers, particularly those used in liquid crystal displays, face challenges in maintaining high polarization efficiency without suffering from the metal wire grid falling over due to excessive height, which deteriorates polarization characteristics.
Innovation Solution
A polarizer comprising a base substrate with a metal wire grid structure that includes multiple layers of metal wire strips periodically arranged in a specific direction, with dielectric layers stacked between these layers to enhance polarization efficiency and prevent grid falling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the height of metal wire grid is increased to improve polarization efficiency, then polarization efficiency is improved, but the metal wire grid falls over due to excessive height
Solution Approach 1:
The metal wire grid is divided into multiple layers (first metal wire grid layer and second metal wire grid layer) separated by a dielectric layer. This segmentation reduces the height of each individual grid layer while maintaining overall polarization efficiency through the stacked configuration, preventing the grid from falling over.
Solution Approach 2:
The patent transitions from a single-layer grid structure to a multi-layer stacked structure in the vertical dimension. By arranging multiple thinner grid layers at different heights separated by dielectric layers, the solution achieves high polarization efficiency without requiring excessive height in any single layer, thus preventing structural failure.
2Reliability
If multiple metal wire grid layers are stacked to achieve high polarization efficiency, then polarization efficiency reaches 99.99% or higher, but device complexity increases
Solution Approach 1:
The patent combines multiple metal wire grid layers with dielectric layers into a single integrated metal wire grid structure. This merging approach achieves high polarization efficiency (99.99% or higher) while managing complexity through unified structural design rather than separate components.
Solution Approach 2:
The patent uses composite structure consisting of metal wire grids and dielectric materials layered together. This composite approach enables the achievement of high polarization efficiency through the synergistic effect of multiple materials and layers while maintaining a manageable device 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
The proposed polarizer achieves a polarization efficiency of 99.99% or higher by stacking multiple metal wire grid layers with dielectric interlayers, effectively preventing grid falling and maintaining high polarization performance.
Implementation Method 1
Liquid Crystal Display (LCD) has advantages of low cost, super high resolution, large size and highly mature in technology. In recent years, Double-Cell LCD that achieves high contrast and Wide Color Gamut LCD have gained increasing attention. These products use polarizers with high polarization characteristics to obtain polarized light.
Implementation Method 2
a metal wire grid structure provided on the base substrate. The metal wire grid structure comprises: a plurality of metal wire grid layers, each of the plurality of metal wire grid layers comprises a plurality of metal wire strips arranged periodically
Data Source
AI summary
A polarizer, an electronic device and a method of preparing the polarizer are provided. The polarizer includes a base substrate and a metal wire grid structure provided on the base substrate. The metal wire grid structure includes a plurality of metal wire grid layers and one or more dielectric layers stacked between adjacent metal wire grid layers of the metal wire grid layers. Each of the plurality of metal wire grid layers includes a plurality of metal wire strips periodically arranged in a first direction parallel to a surface of the base substrate, and each of the plurality of metal wire grid layers is stacked in a second direction perpendicular to the surface of the base substrate, and a period of the metal wire strips in each of the plurality of metal wire grid layers is less than or equal to 300 nm.