Metal Wire Grid Polarizer Alignment via Segmented Design
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Solution Overview
Problem
The alignment process of circuit boards and flexible printed circuit boards with display substrates is hindered by the presence of a metal wire grid polarizer on the back, leading to difficulties in achieving binding accuracy due to shielding effects.
Innovation Solution
A metal wire grid polarizer design with non-overlapping orthographic projections on binding areas and binding contraposition areas, incorporating transparent wire grids and shielding portions to prevent light shielding and facilitate accurate alignment, along with a manufacturing method that forms metal and transparent wire grids without overlapping projections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a metal wire grid polarizer is provided on the back of the display substrate or optical control substrate, then the polarizer can perform its light-polarizing function, but the alignment process cannot be performed and binding accuracy cannot be achieved due to shielding effects
Solution Approach 1:
The metal wire grid polarizer is segmented into multiple independent metal wire grids that are spaced apart from each other. This segmentation allows light to pass through the gaps between the grids, eliminating the shielding effect that previously prevented alignment processes, while still maintaining the overall polarizing function of the polarizer structure.
Solution Approach 2:
Different regions of the polarizer are designed with different properties: the metal wire grids provide polarizing function in the light path area, while the spaced-apart configuration creates transparent regions for alignment processes. This local differentiation allows the same structure to serve multiple functions - polarization and alignment accessibility.
2Ease of manufacture
If metal wire grids are disposed on the base substrate, then the polarizer structure is formed, but orthographic projections overlapping with binding areas prevents alignment processes
Solution Approach 1:
The metal wire grids are segmented and spaced apart rather than forming a continuous structure. This segmentation creates gaps that allow alignment processes to be performed on the binding areas, while still maintaining the polarizing structure where needed.
Solution Approach 2:
The metal wire grids are extracted from the binding areas by spacing them apart, removing the shielding effect from critical regions while preserving the polarizing function in the light path areas. This selective placement resolves the conflict between structure formation and alignment accessibility.
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
Enables smooth alignment and accurate binding by avoiding light shielding, ensuring precise positioning and improved manufacturing processes for large-screen display devices.
Implementation Method 1
metal wire grids disposed on the base substrate and arranged parallel to each other
Data Source
AI summary
The embodiments of the present disclosure relate to the field of display technologies, in particular to a metal wire grid polarizer and a manufacturing method thereof, and a display device. The metal wire grid polarizer includes a base substrate and a plurality of metal wire grids. The base substrate has a plurality of binding areas and a plurality of binding contraposition areas. The metal wire grids are disposed on the base substrate and arranged parallel to each other, and orthographic projections of the metal wire grids on the base substrate do not overlap with the binding areas or the binding contraposition areas, to avoid the metal wire grids from shielding light in the binding process, ensure the alignment process to proceed smoothly, and realize the binding accuracy.