Enhanced Color Conversion Efficiency of Quantum Dot Displays based on Organic-inorganic Composite as Scatterers and Cholesteric Liquid Crystal Layer as Reflectors

Hayoung Jung; Junho Jung; Yeonjin Han; Seungjai Kim; Jisoo Kim; Minsu Kim; Seung Hee Lee

doi:10.1002/sdtp.17985

Enhanced Color Conversion Efficiency of Quantum Dot Displays based on Organic-inorganic Composite as Scatterers and Cholesteric Liquid Crystal Layer as Reflectors

Hayoung Jung
, Junho Jung
, Yeonjin Han
, Seungjai Kim
, Jisoo Kim
, Minsu Kim^*
, Seung Hee Lee^*

^*Corresponding author for this work

Department of Polymer -Nano Science &Technology

Jeonbuk National University
LG Corporation

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

In quantum dot organic light emitting diodes (QD-OLEDs), pixelized quantum dots convert blue OLED light to green and red. However, blue light leakage occurs due to QD layer's efficiency. Additionally, external light can cause green and red appearance even in black state. We propose using liquid crystal droplets for improved color conversion and nozzle unclogging. Further, a cholesteric LC layer is added to selectively reflect external UV and blue light.

Original language	English
Pages (from-to)	1987-1989
Number of pages	3
Journal	Digest of Technical Papers - SID International Symposium
Volume	55
Issue number	1
DOIs	https://doi.org/10.1002/sdtp.17985
State	Published - 2024
Event	International Symposium, Seminar, and Exhibition, Display Week 2024 - San Jose, United States Duration: 2024.05.12 → 2024.05.17

Keywords

Cholesteric liquid crystals (CLCs)
External quantum efficiency
Inkjet printing
LC droplets, Polymerization induced phase separation (PIPS)
Quantum dot organic light emitting diodes (QD-OLEDs)
Quantum dots (QDs)

Quacquarelli Symonds(QS) Subject Topics

Engineering & Technology

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10.1002/sdtp.17985

Cite this

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title = "Enhanced Color Conversion Efficiency of Quantum Dot Displays based on Organic-inorganic Composite as Scatterers and Cholesteric Liquid Crystal Layer as Reflectors",

abstract = "In quantum dot organic light emitting diodes (QD-OLEDs), pixelized quantum dots convert blue OLED light to green and red. However, blue light leakage occurs due to QD layer's efficiency. Additionally, external light can cause green and red appearance even in black state. We propose using liquid crystal droplets for improved color conversion and nozzle unclogging. Further, a cholesteric LC layer is added to selectively reflect external UV and blue light.",

keywords = "Cholesteric liquid crystals (CLCs), External quantum efficiency, Inkjet printing, LC droplets, Polymerization induced phase separation (PIPS), Quantum dot organic light emitting diodes (QD-OLEDs), Quantum dots (QDs)",

author = "Hayoung Jung and Junho Jung and Yeonjin Han and Seungjai Kim and Jisoo Kim and Minsu Kim and Lee, \{Seung Hee\}",

note = "Publisher Copyright: {\textcopyright} 2024, John Wiley and Sons Inc. All rights reserved.; International Symposium, Seminar, and Exhibition, Display Week 2024 ; Conference date: 12-05-2024 Through 17-05-2024",

year = "2024",

doi = "10.1002/sdtp.17985",

language = "English",

volume = "55",

pages = "1987--1989",

journal = "Digest of Technical Papers - SID International Symposium",

issn = "0097-966X",

number = "1",

}

Enhanced Color Conversion Efficiency of Quantum Dot Displays based on Organic-inorganic Composite as Scatterers and Cholesteric Liquid Crystal Layer as Reflectors. / Jung, Hayoung; Jung, Junho; Han, Yeonjin et al.
In: Digest of Technical Papers - SID International Symposium, Vol. 55, No. 1, 2024, p. 1987-1989.

Research output: Contribution to journal › Conference article › peer-review

TY - JOUR

T1 - Enhanced Color Conversion Efficiency of Quantum Dot Displays based on Organic-inorganic Composite as Scatterers and Cholesteric Liquid Crystal Layer as Reflectors

AU - Jung, Hayoung

AU - Jung, Junho

AU - Han, Yeonjin

AU - Kim, Seungjai

AU - Kim, Jisoo

AU - Kim, Minsu

AU - Lee, Seung Hee

PY - 2024

Y1 - 2024

N2 - In quantum dot organic light emitting diodes (QD-OLEDs), pixelized quantum dots convert blue OLED light to green and red. However, blue light leakage occurs due to QD layer's efficiency. Additionally, external light can cause green and red appearance even in black state. We propose using liquid crystal droplets for improved color conversion and nozzle unclogging. Further, a cholesteric LC layer is added to selectively reflect external UV and blue light.

AB - In quantum dot organic light emitting diodes (QD-OLEDs), pixelized quantum dots convert blue OLED light to green and red. However, blue light leakage occurs due to QD layer's efficiency. Additionally, external light can cause green and red appearance even in black state. We propose using liquid crystal droplets for improved color conversion and nozzle unclogging. Further, a cholesteric LC layer is added to selectively reflect external UV and blue light.

KW - Cholesteric liquid crystals (CLCs)

KW - External quantum efficiency

KW - Inkjet printing

KW - LC droplets, Polymerization induced phase separation (PIPS)

KW - Quantum dot organic light emitting diodes (QD-OLEDs)

KW - Quantum dots (QDs)

UR - https://www.scopus.com/pages/publications/85202641689

U2 - 10.1002/sdtp.17985

DO - 10.1002/sdtp.17985

M3 - Conference article

AN - SCOPUS:85202641689

SN - 0097-966X

VL - 55

SP - 1987

EP - 1989

JO - Digest of Technical Papers - SID International Symposium

JF - Digest of Technical Papers - SID International Symposium

IS - 1

T2 - International Symposium, Seminar, and Exhibition, Display Week 2024

Y2 - 12 May 2024 through 17 May 2024

ER -

Enhanced Color Conversion Efficiency of Quantum Dot Displays based on Organic-inorganic Composite as Scatterers and Cholesteric Liquid Crystal Layer as Reflectors

Abstract

Keywords

Quacquarelli Symonds(QS) Subject Topics

Access to Document

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