Wire Grid Polarizer Doping for High-Resolution Display Transmittance

The wire grid polarizer is segmented into multiple functional layers: a lower electrode layer, an upper electrode layer, and an insulating layer positioned between them. This segmentation allows each layer to contribute specifically to the overall polarization function, enabling high polarization degree through the coordinated action of separated conductive elements rather than requiring a single complex structure

The wire grid polarizer employs a composite structure combining conductive materials (electrodes) with insulating materials. The insulating layer with specific dielectric properties is positioned between the electrode layers to prevent electrical shorting while maintaining the optical polarization function. This composite approach enables both high transmittance and high polarization degree by optimizing the interaction between different material properties

The insulating layer is positioned locally between the lower and upper electrode layers at specific regions where electrical isolation is required. This local positioning of the insulating material allows the wire grid structure to maintain high etching selectivity in critical areas while simplifying the overall manufacturing process by not requiring insulating material throughout the entire structure

The patent optimizes the thickness of the insulating layer within a specific range (10-100 nm) to achieve the desired balance between electrical isolation and optical performance. By controlling the insulating layer thickness parameter, the manufacturing process can achieve high etching selectivity without requiring excessively complex fabrication steps, as the thickness parameter alone provides sufficient control over the polarizer's electrical and optical properties