Enhancement of Optical Efficiency in White OLED Display Using the Patterned Photoresist Film Dispersed with Quantum Dot Nanocrystals

Hyo Jun Kim; Min Ho Shin; Hyun Guk Hong; Bo Sun Song; Soo Kang Kim; Won Hoe Koo; Jong Geun Yoon; Soo Young Yoon; Young Joo Kim

doi:10.1109/JDT.2015.2503401

Enhancement of Optical Efficiency in White OLED Display Using the Patterned Photoresist Film Dispersed with Quantum Dot Nanocrystals

Hyo Jun Kim, Min Ho Shin, Hyun Guk Hong, Bo Sun Song, Soo Kang Kim, Won Hoe Koo, Jong Geun Yoon, Soo Young Yoon, Young Joo Kim

Department of Mechanical Engineering

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

49 Citations (Scopus)

Abstract

Quantum dot (QD) nanocrystals dispersed in photoresist (PR) film was developed and applied to white organic light-emitting diode (OLED) to improve optical power of red color through down-converting of blue and green light. To integrate to white OLED display panel, the QD dispersed photoresist film was prepared in a thickness of 2 μm with high concentration of QDs up to 30 wt%. QDs were dispersed successfully in PR with a matching of nonpolar characteristic for the ligands of QDs and PR as well as a careful mixing process of PR and QD dispersed solutions. We also realized the patterning of QD dispersed PR film with a stripe pattern of 60-μ m width without a residual layer. The experimental measurement after passing through a 30 wt% QD dispersed PR film and a red color filter in white OLED shows the enhancement of 40.2% in the optical power of red color compared to that from a conventional white OLED without QD dispersed PR film.

Original language	English
Article number	7336476
Pages (from-to)	526-531
Number of pages	6
Journal	Journal of Display Technology
Volume	12
Issue number	6
DOIs	https://doi.org/10.1109/JDT.2015.2503401
Publication status	Published - 2016 Jun

Bibliographical note

Funding Information:
This work was supported by the Industrial Strategic technology development program under Grant 10035274 funded by the Ministry of Trade, Industry and Energy of Korea and the research grant funded by LG Display.

Publisher Copyright:
© 2005-2012 IEEE.

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1109/JDT.2015.2503401

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title = "Enhancement of Optical Efficiency in White OLED Display Using the Patterned Photoresist Film Dispersed with Quantum Dot Nanocrystals",

abstract = "Quantum dot (QD) nanocrystals dispersed in photoresist (PR) film was developed and applied to white organic light-emitting diode (OLED) to improve optical power of red color through down-converting of blue and green light. To integrate to white OLED display panel, the QD dispersed photoresist film was prepared in a thickness of 2 μm with high concentration of QDs up to 30 wt%. QDs were dispersed successfully in PR with a matching of nonpolar characteristic for the ligands of QDs and PR as well as a careful mixing process of PR and QD dispersed solutions. We also realized the patterning of QD dispersed PR film with a stripe pattern of 60-μ m width without a residual layer. The experimental measurement after passing through a 30 wt% QD dispersed PR film and a red color filter in white OLED shows the enhancement of 40.2% in the optical power of red color compared to that from a conventional white OLED without QD dispersed PR film.",

author = "Kim, {Hyo Jun} and Shin, {Min Ho} and Hong, {Hyun Guk} and Song, {Bo Sun} and Kim, {Soo Kang} and Koo, {Won Hoe} and Yoon, {Jong Geun} and Yoon, {Soo Young} and Kim, {Young Joo}",

note = "Funding Information: This work was supported by the Industrial Strategic technology development program under Grant 10035274 funded by the Ministry of Trade, Industry and Energy of Korea and the research grant funded by LG Display. Publisher Copyright: {\textcopyright} 2005-2012 IEEE.",

year = "2016",

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doi = "10.1109/JDT.2015.2503401",

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AU - Kim, Soo Kang

AU - Koo, Won Hoe

AU - Yoon, Jong Geun

AU - Yoon, Soo Young

AU - Kim, Young Joo

N1 - Funding Information: This work was supported by the Industrial Strategic technology development program under Grant 10035274 funded by the Ministry of Trade, Industry and Energy of Korea and the research grant funded by LG Display. Publisher Copyright: © 2005-2012 IEEE.

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N2 - Quantum dot (QD) nanocrystals dispersed in photoresist (PR) film was developed and applied to white organic light-emitting diode (OLED) to improve optical power of red color through down-converting of blue and green light. To integrate to white OLED display panel, the QD dispersed photoresist film was prepared in a thickness of 2 μm with high concentration of QDs up to 30 wt%. QDs were dispersed successfully in PR with a matching of nonpolar characteristic for the ligands of QDs and PR as well as a careful mixing process of PR and QD dispersed solutions. We also realized the patterning of QD dispersed PR film with a stripe pattern of 60-μ m width without a residual layer. The experimental measurement after passing through a 30 wt% QD dispersed PR film and a red color filter in white OLED shows the enhancement of 40.2% in the optical power of red color compared to that from a conventional white OLED without QD dispersed PR film.

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Enhancement of Optical Efficiency in White OLED Display Using the Patterned Photoresist Film Dispersed with Quantum Dot Nanocrystals

Abstract

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