Study of a liquid crystal structure with improved electro-optical characteristics

Ji Hun Lim; Byeong Yun Oh; Byoung Yong Kim; Young Hwan Kim; Kang Min Lee; Jeoung Min Han; Sang Keuk Lee; Dae Shik Seo

doi:10.1063/1.3013434

Study of a liquid crystal structure with improved electro-optical characteristics

Ji Hun Lim, Byeong Yun Oh, Byoung Yong Kim, Young Hwan Kim, Kang Min Lee, Jeoung Min Han, Sang Keuk Lee, Dae Shik Seo

Department of Electrical and Electronic Engineering

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

9 Citations (Scopus)

Abstract

This paper introduces the vertically aligned twisted nematic in-plane switching (VPS) structure, and compares the electro-optical (EO) characteristics of VPS liquid crystal displays (LCDs) and in-plane switching (IPS) LCDs. Various VPS-LCD pretilt angles were induced, and ion beam (IB) irradiation was used to enhance the EO properties. An x-ray photoelectron spectroscopic analysis of the IB-irradiated polymer surface confirmed that the intensity of C=O bonding as a function of exposure time traced the pretilt angles. The pretilt angle effect on optical properties was first analyzed in the experimental results. While multidomain vertical alignment LCDs and IPS-LCDs only resolve one difficulty, the VPS-LCDs described here overcome several viewing angle and transmittance curve problems.

Original language	English
Article number	014504
Journal	Journal of Applied Physics
Volume	105
Issue number	1
DOIs	https://doi.org/10.1063/1.3013434
Publication status	Published - 2009

Bibliographical note

Funding Information:
This study was supported by the Ministry of Knowledge Economy (MKE), Korea, under the Information Technology Research Center (ITRC) support program supervised by the Institute of Information Technology Advancement (No. IITA-2008-C1090-0801-0018), and the Brain Korea 21 (No. BK 21) Fellowship from the Ministry of Education of Korea.

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1063/1.3013434

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title = "Study of a liquid crystal structure with improved electro-optical characteristics",

abstract = "This paper introduces the vertically aligned twisted nematic in-plane switching (VPS) structure, and compares the electro-optical (EO) characteristics of VPS liquid crystal displays (LCDs) and in-plane switching (IPS) LCDs. Various VPS-LCD pretilt angles were induced, and ion beam (IB) irradiation was used to enhance the EO properties. An x-ray photoelectron spectroscopic analysis of the IB-irradiated polymer surface confirmed that the intensity of C=O bonding as a function of exposure time traced the pretilt angles. The pretilt angle effect on optical properties was first analyzed in the experimental results. While multidomain vertical alignment LCDs and IPS-LCDs only resolve one difficulty, the VPS-LCDs described here overcome several viewing angle and transmittance curve problems.",

author = "Lim, {Ji Hun} and Oh, {Byeong Yun} and Kim, {Byoung Yong} and Kim, {Young Hwan} and Lee, {Kang Min} and Han, {Jeoung Min} and Lee, {Sang Keuk} and Seo, {Dae Shik}",

note = "Funding Information: This study was supported by the Ministry of Knowledge Economy (MKE), Korea, under the Information Technology Research Center (ITRC) support program supervised by the Institute of Information Technology Advancement (No. IITA-2008-C1090-0801-0018), and the Brain Korea 21 (No. BK 21) Fellowship from the Ministry of Education of Korea.",

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doi = "10.1063/1.3013434",

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AU - Lim, Ji Hun

AU - Oh, Byeong Yun

AU - Kim, Byoung Yong

AU - Kim, Young Hwan

AU - Lee, Kang Min

AU - Han, Jeoung Min

AU - Lee, Sang Keuk

AU - Seo, Dae Shik

N1 - Funding Information: This study was supported by the Ministry of Knowledge Economy (MKE), Korea, under the Information Technology Research Center (ITRC) support program supervised by the Institute of Information Technology Advancement (No. IITA-2008-C1090-0801-0018), and the Brain Korea 21 (No. BK 21) Fellowship from the Ministry of Education of Korea.

PY - 2009

Y1 - 2009

N2 - This paper introduces the vertically aligned twisted nematic in-plane switching (VPS) structure, and compares the electro-optical (EO) characteristics of VPS liquid crystal displays (LCDs) and in-plane switching (IPS) LCDs. Various VPS-LCD pretilt angles were induced, and ion beam (IB) irradiation was used to enhance the EO properties. An x-ray photoelectron spectroscopic analysis of the IB-irradiated polymer surface confirmed that the intensity of C=O bonding as a function of exposure time traced the pretilt angles. The pretilt angle effect on optical properties was first analyzed in the experimental results. While multidomain vertical alignment LCDs and IPS-LCDs only resolve one difficulty, the VPS-LCDs described here overcome several viewing angle and transmittance curve problems.

AB - This paper introduces the vertically aligned twisted nematic in-plane switching (VPS) structure, and compares the electro-optical (EO) characteristics of VPS liquid crystal displays (LCDs) and in-plane switching (IPS) LCDs. Various VPS-LCD pretilt angles were induced, and ion beam (IB) irradiation was used to enhance the EO properties. An x-ray photoelectron spectroscopic analysis of the IB-irradiated polymer surface confirmed that the intensity of C=O bonding as a function of exposure time traced the pretilt angles. The pretilt angle effect on optical properties was first analyzed in the experimental results. While multidomain vertical alignment LCDs and IPS-LCDs only resolve one difficulty, the VPS-LCDs described here overcome several viewing angle and transmittance curve problems.

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Study of a liquid crystal structure with improved electro-optical characteristics

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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