Electroluminescent devices with function of electro-optic shutter

Seongkyu Song; Jaewook Jeong; Seok Hwan Chung; Soon Moon Jeong; Byeongdae Choi

doi:10.1364/Oe.20.021074

Electroluminescent devices with function of electro-optic shutter

Seongkyu Song
, Jaewook Jeong
, Seok Hwan Chung
, Soon Moon Jeong
, Byeongdae Choi

Daegu Gyeongbuk Institute of Science and Technology

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

The polymer-dispersed liquid crystal (PDLC) was used as a dielectric layer of electroluminescent (EL) device to provide multi-function of electroluminescence and electro-optic shutter. A 50 μm-thick PDLC layer was formed between a transparent electrode and a ZnS:Cu phosphor layer. The electro-optic properties of the EL device were not distorted by the introduction of the PDLC layer. The extraction efficiency of luminescence was improved by more than 14% by PDLC layer. The transmittance of the PDLC was also founded not to be degraded significantly by excitation frequency. Therefore, the electroluminescence of the device was ignited by excitation frequency at a given voltage for full transparency of the PDLC. This device has great potential for applications in transparent displays with the function of a privacy window.

Original language	English
Pages (from-to)	21704-21712
Number of pages	9
Journal	Optics Express
Volume	20
Issue number	19
DOIs	https://doi.org/10.1364/Oe.20.021074
State	Published - 10 Sep 2012

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title = "Electroluminescent devices with function of electro-optic shutter",

abstract = "The polymer-dispersed liquid crystal (PDLC) was used as a dielectric layer of electroluminescent (EL) device to provide multi-function of electroluminescence and electro-optic shutter. A 50 μm-thick PDLC layer was formed between a transparent electrode and a ZnS:Cu phosphor layer. The electro-optic properties of the EL device were not distorted by the introduction of the PDLC layer. The extraction efficiency of luminescence was improved by more than 14\% by PDLC layer. The transmittance of the PDLC was also founded not to be degraded significantly by excitation frequency. Therefore, the electroluminescence of the device was ignited by excitation frequency at a given voltage for full transparency of the PDLC. This device has great potential for applications in transparent displays with the function of a privacy window.",

author = "Seongkyu Song and Jaewook Jeong and Chung, \{Seok Hwan\} and Jeong, \{Soon Moon\} and Byeongdae Choi",

year = "2012",

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doi = "10.1364/Oe.20.021074",

language = "English",

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T1 - Electroluminescent devices with function of electro-optic shutter

AU - Song, Seongkyu

AU - Jeong, Jaewook

AU - Chung, Seok Hwan

AU - Jeong, Soon Moon

AU - Choi, Byeongdae

PY - 2012/9/10

Y1 - 2012/9/10

N2 - The polymer-dispersed liquid crystal (PDLC) was used as a dielectric layer of electroluminescent (EL) device to provide multi-function of electroluminescence and electro-optic shutter. A 50 μm-thick PDLC layer was formed between a transparent electrode and a ZnS:Cu phosphor layer. The electro-optic properties of the EL device were not distorted by the introduction of the PDLC layer. The extraction efficiency of luminescence was improved by more than 14% by PDLC layer. The transmittance of the PDLC was also founded not to be degraded significantly by excitation frequency. Therefore, the electroluminescence of the device was ignited by excitation frequency at a given voltage for full transparency of the PDLC. This device has great potential for applications in transparent displays with the function of a privacy window.

AB - The polymer-dispersed liquid crystal (PDLC) was used as a dielectric layer of electroluminescent (EL) device to provide multi-function of electroluminescence and electro-optic shutter. A 50 μm-thick PDLC layer was formed between a transparent electrode and a ZnS:Cu phosphor layer. The electro-optic properties of the EL device were not distorted by the introduction of the PDLC layer. The extraction efficiency of luminescence was improved by more than 14% by PDLC layer. The transmittance of the PDLC was also founded not to be degraded significantly by excitation frequency. Therefore, the electroluminescence of the device was ignited by excitation frequency at a given voltage for full transparency of the PDLC. This device has great potential for applications in transparent displays with the function of a privacy window.

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DO - 10.1364/Oe.20.021074

M3 - Article

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AN - SCOPUS:84866249602

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VL - 20

SP - 21704

EP - 21712

JO - Optics Express

JF - Optics Express

IS - 19

ER -

Electroluminescent devices with function of electro-optic shutter

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