Polarizing Grating Color Filters With Large Acceptance Angle And High Transmittance

Abstract

We design and simulate a polarizing color filter with a sub-wavelength metal-dielectric grating. It manifests several advantages: a large acceptance angle (up to ±50°), high transmittance (74.3%-92.7%), low absorption loss (∼3.3%), and a high extinction ratio. This polarizing color filter can be integrated into a liquid-crystal display (LCD) backlight system to simultaneously recycle the light according to its color and polarization. In combination with a specially designed directional backlight, this newly proposed LCD system can theoretically improve optical efficiency up to ∼2.5×, and also provides a large ambient contrast ratio and a wide view. Our approach enables an ultra-low-power LCD without using the complicated field-sequential-color technique.

Publication Date

1-1-2016

Publication Title

Applied Optics

Volume

55

Issue

1

Number of Pages

70-76

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1364/AO.55.000070

Socpus ID

84961753713 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84961753713

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