• Korean Journal of Optics and Photonics
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• v.22 no.2
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• pp.90-95
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• 2011

We propose a super-thin and light-weight liquid crystal cell, in which glass substrates are eliminated and polarizers are used as substrates. We fabricate a polarizer substrate by depositing a-SiOX as a buffer layer, indium-tin-oxide as a transparent conducting layer, and a-SiOX as an alignment layer on a polarizer sequentially at a low temperature. We use the ion-beam method to align liquid crystals on polarizer substrates.

• 한국정보디스플레이학회:학술대회논문집
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• 2007.08a
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• pp.105-108
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• 2007

Chiral liquid crystals exhibit band-gap structures responsive to electrical and optical fields, providing wide-ranging opportunities for photonics applications. We discuss three aspects of this technology: optics of chiral nematic devices and removal of pitch jumps; optical switching of chiral nematic materials; and using novel phases in photonic devices.

• Journal of the Korean Crystal Growth and Crystal Technology
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• v.4 no.2
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• pp.131-133
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• 1994

Deposition of silicon on pretreated sapphire substrates has been investigated by the liquid phase epitaxy method at low temperatures. An average 14 $\mu\textrm{m}$ thickness of silicon was grown over a large area on sapphire substrate originally coated with a much thinner silicon layer $[0.5 \mu\textrm{m} (100) Si/(1102) sapphire]$ at low temperatures from $(380^{\circ}C to 460^{\circ}C)$.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.16 no.4
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• pp.322-329
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• 2003

We have studied how surface pretilt angle affects generation of disclination line in liquid-crystal-on silicon cells for 45$^{\circ}$-twisted nematic (TN) and vertical alignment (VA) modes with pixel size of 15$\mu\textrm{m}$. Our studies show that when the pretilt angle is increased from 0$^{\circ}$to 3$^{\circ}$ in the 45$^{\circ}$-TN cell, the disclination line at left side of on-pixel becomes weak and is well suppressed with $\theta$$\_$p/=3$^{\circ}$ although the pixel size Is decreased. In the VA cell, when the pretilt angle is decreased from 89$^{\circ}$ to 86$^{\circ}$, the disclination line at right side of the on-pixel is suppressed well and even for a smaller pixel size, it does not exist when $\theta$$\_$p/=86$^{\circ}$. The results inform that the pretilt angle strongly affects the image quality of microdisplays.

• Journal of the Korean Crystal Growth and Crystal Technology
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• v.13 no.5
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• pp.222-229
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• 2003

InP crystal is an increasingly important semiconductor material in the application of long-wave optoelectronic and high frequency devices. The equilibrium vapor pressure of phosphorus at the melting point of InP is so high that the synthesis process is very difficult. Liquid-encapsulated Czochralski (LEC) pulling from the melt at high pressure is a generally favored technique to grow InP single crystals. This technique involves two steps: the synthesis of polycrystalline powder and the growth of single crystal from the melt at high pressure. This article reviewed the latest development in the preparation of InP crystal and the evaluation on the crystal quality.

• Proceedings of the Korean Vacuum Society Conference
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• 2013.02a
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• pp.637-637
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• 2013

We develop single-crystal poly(3,4-ethylenedioxythiopene nanowires using liquid-bridge-mediated nanotransfer printing via vapor phase polymerization. This direct printing method can simultaneously enable the synthesis, alignment and patterning of the nanowires from molecular ink solutions. Twoor three-dimensional complex structures of various single-crystal organic nanowires were directly fabricated over a large area using many types of molecular inks. This method is capable of generating several optoelectronic devices. LB-nTM is based on the direct transfer of various materials from a mold to a substrate via a liquid bridge between them. To demonstrate its usefulness, we used LB-nTM to fabricate nanowire field-effect transistors and arrays of 6,13-bis (triisopropyl- silylethynyl) pentacene (TIPS-PEN) nanowire field-effect transistors.

• Journal of Information Display
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• v.12 no.1
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• pp.17-21
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• 2011

Aliquid crystal (LC) device switchable between the reflective and transmissive modes without sub-pixel division is proposed. By using dye-doped nematic LCs for the top LC layer, transflective displays with high reflectance were realized. It is expected that the proposed device can be applied to high-reflectance transflective devices for outdoor applications.

• 한국정보디스플레이학회:학술대회논문집
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• 2007.08a
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• pp.203-206
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• 2007

The FLEXMatters initiative is building a collaboration of companies and universities to develop and produce flexible devices. Kent Displays leads the production of flexible displays using their bistable cholesteric technology. The FLEXMatters members are collaborating to develop the flexible manufacturing process that will are common to a wide variety of devices.

• Proceedings of the Optical Society of Korea Conference
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• 1996.09a
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• pp.107-107
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• 1996

• Proceedings of the Optical Society of Korea Conference
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• 2005.07a
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• pp.136-137
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• 2005