Enhanced electrooptical characteristics of twisted nematic liquid crystal display with ZrO 2 thin films

Lee Gon Kim; Hong Gyu Park; Young Hwan Kim; Dae Shik Seo

doi:10.1109/LED.2012.2198609

Enhanced electrooptical characteristics of twisted nematic liquid crystal display with ZrO ₂ thin films

Lee Gon Kim, Hong Gyu Park, Young Hwan Kim, Dae Shik Seo

Department of Electrical and Electronic Engineering

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

4 Citations (Scopus)

Abstract

A rubbing-free liquid crystal (LC) alignment method is highly desirable for future generations of large high-resolution LC-display technology. In this paper, ion-beam (IB) bombardment was carried out as an LC alignment method in order to modify the ZrO ₂ surface, and unidirectional LCs were achieved. The pretilt angle was found to be a function of the IB incident energy, and a possible mechanism of the LC alignment was investigated with X-ray photoelectron spectroscopy (XPS). XPS analysis showed that the LC alignment on the IB-irradiated ZrO ₂ surface was primarily due to the reformation of O-Zr bonds. The response time of a twisted nematic cell with IB-irradiated ZrO ₂ thin films was superior to those with rubbed polyimide films.

Original language	English
Article number	6215014
Pages (from-to)	1153-1155
Number of pages	3
Journal	IEEE Electron Device Letters
Volume	33
Issue number	8
DOIs	https://doi.org/10.1109/LED.2012.2198609
Publication status	Published - 2012

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/LED.2012.2198609

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abstract = "A rubbing-free liquid crystal (LC) alignment method is highly desirable for future generations of large high-resolution LC-display technology. In this paper, ion-beam (IB) bombardment was carried out as an LC alignment method in order to modify the ZrO 2 surface, and unidirectional LCs were achieved. The pretilt angle was found to be a function of the IB incident energy, and a possible mechanism of the LC alignment was investigated with X-ray photoelectron spectroscopy (XPS). XPS analysis showed that the LC alignment on the IB-irradiated ZrO 2 surface was primarily due to the reformation of O-Zr bonds. The response time of a twisted nematic cell with IB-irradiated ZrO 2 thin films was superior to those with rubbed polyimide films.",

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AU - Kim, Lee Gon

AU - Park, Hong Gyu

AU - Kim, Young Hwan

AU - Seo, Dae Shik

PY - 2012

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AB - A rubbing-free liquid crystal (LC) alignment method is highly desirable for future generations of large high-resolution LC-display technology. In this paper, ion-beam (IB) bombardment was carried out as an LC alignment method in order to modify the ZrO 2 surface, and unidirectional LCs were achieved. The pretilt angle was found to be a function of the IB incident energy, and a possible mechanism of the LC alignment was investigated with X-ray photoelectron spectroscopy (XPS). XPS analysis showed that the LC alignment on the IB-irradiated ZrO 2 surface was primarily due to the reformation of O-Zr bonds. The response time of a twisted nematic cell with IB-irradiated ZrO 2 thin films was superior to those with rubbed polyimide films.

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Enhanced electrooptical characteristics of twisted nematic liquid crystal display with ZrO ₂ thin films

Abstract

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