Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Contrast ratios of polymer-dispersed liquid crystal films

Not Accessible

Your library or personal account may give you access

Abstract

Contrast ratio is an important measure of the performance of an electrooptic display. From measurements of film brightness and transmittance, we determined contrast ratios of thin polymer films containing microdroplets of liquid crystalline material. Contrast ratios based on brightness were typically ~3 for all samples studied, whereas contrast ratios based on transmittance varied from ~20 to 200 depending on the sample. We explain these differences by analyzing the relations between the illumination geometries in the two measurements and the voltage-dependent multiple scattering of light which controls the electrooptic performance of the films. Effects of the spectral content of the light source and the response of the human eye on contrast ratio were also determined. The results presented here demonstrate the importance of standardizing procedures for measuring contrast ratios of these new liquid crystal films.

© 1987 Optical Society of America

Full Article  |  PDF Article
More Like This
Angle-dependent scattering of polarized light by polymer-dispersed liquid-crystal films

G. Paul Montgomery
J. Opt. Soc. Am. B 5(4) 774-784 (1988)

Selective scattering polymer dispersed liquid crystal film for light enhancement of organic light emitting diode

Jinghua Jiang, Greg McGraw, Ruiqing Ma, Julie Brown, and Deng-Ke Yang
Opt. Express 25(4) 3327-3335 (2017)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (2)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (5)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved