Advanced search
Publication Cover
Liquid Crystals Volume 41, 2014 - Issue 6
Submit an article Journal homepage
902
Views
49
CrossRef citations to date
0
Altmetric
Research Article

Superior fast switching of liquid crystal devices using graphene quantum dots

Min-Jae Choa Department of Electrical and Electronic Engineering, Information Display Device Laboratory, Yonsei University, Seoul, Republic of Korea
,
Hong-Gyu Parka Department of Electrical and Electronic Engineering, Information Display Device Laboratory, Yonsei University, Seoul, Republic of Korea
,
Hae-Chang Jeonga Department of Electrical and Electronic Engineering, Information Display Device Laboratory, Yonsei University, Seoul, Republic of Korea
,
Jae-Won Leea Department of Electrical and Electronic Engineering, Information Display Device Laboratory, Yonsei University, Seoul, Republic of Korea
,
Yoon Ho Junga Department of Electrical and Electronic Engineering, Information Display Device Laboratory, Yonsei University, Seoul, Republic of Korea
,
Dai-Hyun Kima Department of Electrical and Electronic Engineering, Information Display Device Laboratory, Yonsei University, Seoul, Republic of Korea
,
Jeong-Hwan Kima Department of Electrical and Electronic Engineering, Information Display Device Laboratory, Yonsei University, Seoul, Republic of Korea
,
Jin-Woo Leeb Technology Policy Department, Korea Electronics Technology Institute, Seongnam-si, Republic of Korea
&
Dae-Shik Seoa Department of Electrical and Electronic Engineering, Information Display Device Laboratory, Yonsei University, Seoul, Republic of KoreaCorrespondence[email protected]
 show all
Pages 761-767 | Received 11 Dec 2013, Accepted 27 Jan 2014, Published online: 14 Feb 2014
 
Sample our Engineering & Technology journals, sign in here to start your access, latest two full volumes FREE to you for 14 days

Abstract

We report the doping effect of graphene quantum dots (QDs) in a nematic liquid crystal (NLC) device. The use of graphene QDs leads to improved electro-optical (EO) properties, such as faster response times and a decreased threshold voltage. A 14.8% reduction in the threshold voltage (3.165 V), a 30% decrease in the falling time (4.9 ms) and a 63.6% decrease in the rising time (2.4 ms) were observed for twisted nematic (TN) LC devices (LCDs) that were doped with QDs. We confirm that the doping of the TN-LCD with graphene QDs reduces the field-screening effect, which is caused by impurity ions, whereas the other properties of conventional TN-LCDs are maintained.

Log in via your institution

Access through your institution

Log in to Taylor & Francis Online

Restore content access

Restore content access for purchases made as guest
Purchase options * Save for later

PDF download + Online access

  • 48 hours access to article PDF & online version
  • Article PDF can be downloaded
  • Article PDF can be printed
USD 61.00 Add to cart

* Local tax will be added as applicable

Related Research

People also read lists articles that other readers of this article have read.

Recommended articles lists articles that we recommend and is powered by our AI driven recommendation engine.

Cited by lists all citing articles based on Crossref citations.
Articles with the Crossref icon will open in a new tab.