Affiliation:
1. Huangpu Research and Graduate School of Guangzhou University
2. China Electronic Product Reliability and Environmental Testing Research Institute
3. Malek Ashtar University of Technology
4. Beihang University
Abstract
Absorptive polarizers
are
pivotal components for
realizing a low ambient reflection in liquid crystal displays (LCDs)
and organic light-emitting diodes (OLEDs). Different types of
absorptive polarizers have been proposed. Nevertheless, the
realization of compact and efficient absorptive polarizers remains
challenging. Wire grid polarizers (WGPs) are a promising solution
because of their high durability and relatively thin thickness. In
this paper, two structures of absorptive-WGPs have been proposed and
optimized at the target wavelength of 532 nm: one is based on a
patterned
F
e
2
O
3
/
A
l
bi-layer on top of a
S
i
O
2
substrate, and the second one builds
on the first one by depositing a
S
i
O
2
layer in the gaps of Al. The optimal
solutions exhibit a reflectance less than 5%, a transmittance over
45%, and an extinction ratio over 40 dB. To evaluate the
manufacturing feasibility, their sensitivity to the wire’s dimensional
parameters is investigated. Their great spectral performance and large
acceptance angles demonstrate that such polarizers have the potential
to significantly promote the development of current
display technologies.
Funder
Key Area Research and Development Program
of Guangzhou
National Natural Science Foundation of
China
Subject
Atomic and Molecular Physics, and Optics,Engineering (miscellaneous),Electrical and Electronic Engineering