• 한국정보디스플레이학회:학술대회논문집
• /
• 2008.10a
• /
• pp.601-604
• /
• 2008

We report on the Ag thickness effect on the electrical and optical properties of indium zinc tin oxide (IZTO)-Ag-IZTO multilayer electrode grown on a PET substrate and the surface plasmon effect of Ag layer on the optical properties of IZTO-Ag-IZTO electrode. Using an IZTO-Ag-IZTO multilayer with a total thickness below ~80 nm, we can obtain high-quality flexible electrode with very low sheet resistance, high transmittance, high work function and superior flexibility.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
• /
• v.17 no.8
• /
• pp.846-851
• /
• 2004

Transparent conducting indium tin oxide (TC-ITO) thin films on polymeric substrates have been deposited by a dc reactive magnetron sputtering without heat treatments. The polymeric substrates are acryl (AC), poly carbornate (PC), and polyethlene terephthalate (PET) as well as soda lime glass is also used to compare with the polymeric substrates. Sputtering parameters are an important factor for high quality of TC-ITO thin films prepared on polymeric substrates. Furthermore, the material, electrical and optical properties of as-deposited ITO films are dominated by the ratio of oxygen partial pressure. As the experimental results, the surface roughness of ITO films becomes rough as the oxygen partial pressure increases. The electrical resistivity of as-deposited ITO films decreases initially, and then increases with the increase of oxygen partial pressure. The optical transmittance at visible wavelength for all polymeric substrates is above 82 %.

• Proceedings of the Korean Vacuum Society Conference
• /
• 2014.02a
• /
• pp.342.2-342.2
• /
• 2014

IZO, ITO, ITO 등의 투명전극들 중 Indium Tin Oxide (ITO) 다른 전극에 비해 높은 광투과도와 낮은 저항으로 인하여 다양한 부분에서 널리 이용되고 있다. 본 연구에서는 우수한 투과도의 멀티 layer 단열 창호를 위한 film 개발을 위해 RF magnetron system을 이용하여 Sodalime Glass와 polyethylene terephthalate (PET) substrate에 ITO를 증착함으로써 전기적 광학적 특성을 조사하였다. 실험은 power 변화와 Ar, O2의 가스 분압비, Working Pressure의 변화를 변수로 두어 진행하였다. 측정은 Ellipsometry를 이용하여 광학적인 두께와 굴절률을 조사하였고 UV visible spectrometer를 통해 광학적인 투과도를 확인하였다. Power는 100 Watt 늘려가며 진행하였고 O2 유량의 변화에 따라 투과도와 면저항, 굴절률 특성이 달라짐을 확인할 수 있었다. O2의 유량에 따라 면저항이 줄어들다가 어느 정도 이상이 되면 급격히 증가함을 확인할 수 있었다. Working Pressure 변화에 따른 전기적 광학적 특성 또한 확인 하였다.

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 2006.05a
• /
• pp.593-594
• /
• 2006

A novel thermal transfer method was developed to form the phosphor screen for VPT(Video Phone Tube). This method have advantages of simple process, clean environment, saving raw material and running-cost comparison of electrodeposition, spin coating of conventional methods. But now applying phosphor screen for thermal transfer method has been formed three layers (phosphor layer, ITO layer and thermal adhesive layer) on the PET film as substrate. This is complex process, run to waste of raw-material and require of high cost. Also ITO paste at present has been imported from Japan. To improve these problems, we have manufactured phosphor screen formed by two layers (phosphor layer and ITO layer). We have developed ITO paste that had both conductive and excellent thermal transfer abilities, made it of domestic raw-material.

• Proceedings of the Korean Vacuum Society Conference
• /
• 2012.02a
• /
• pp.203-203
• /
• 2012

The SWCNTs network are formed on various plastic substrates such as poly(ethylene terephthalate) (PET), polyimide (PI) and soda lime glass using roll-to-roll printing and spray process. Selective patterning of carbon nanotubes film on transparent substrates was performed using a femtosecond laser. This process has many advantages because it is performed without chemicals and is easily applied to large-area patterning. It could also control the transparency and conductivity of CNT film by selective removal of CNTs. Furthermore, selective cutting of carbon nanotube using a femtosecond laser does not cause any phase change in the CNTs, as usually shown in focused ion beam irradiation of the CNTs. The patterned SWCNT films on transparent substrate can be used electrode layer for touch panels of flexible or flat panel display instead indium tin oxide (ITO) film.

• Proceedings of the Korean Institute of Surface Engineering Conference
• /
• 2018.06a
• /
• pp.121-121
• /
• 2018

Copper is a promising electronic material due to low cost and high electrical conductivity. However, the oxidation problem in an ambient condition makes a crucial issue in practical applications. In here, we developed a simple and cost-effective Cu patterning method on a flexible PET film by combining a solution processable Cu nanoparticle patterning and a low temperature post-processing using acetic acid treatment, laser sintering process and acid-assisted laser sintering process. Acid-assisted laser sintering processed Cu electrode showed superior characteristics in electrical, mechanical and chemical stability over other post-processing methods. Finally, the Cu electrode was applied to the flexible electronics applications such as flexible and transparent heaters and touch screen panels.

• Proceedings of the Korean Institute of Surface Engineering Conference
• /
• 2014.11a
• /
• pp.26-26
• /
• 2014

식품포장재용 SiNx 박막을 합성하였다. SiNx 박막은 박막이 투명하고 낮은 투습도를 가지고 있어 식품포장재뿐 아니라 유기소자디스플레이에서도 활발히 연구되고 있다. 이 연구에서는 SiNx 박막을 PECVD를 통한 저온 공정으로 PET 기판 위에 합성하여 높은 투과도를 가지며 낮은 투습도를 갖는 박막을 합성하였다. 박막 합성 중의 플라즈마 특성을 알아보기 위해 Optical Emission Spectroscopy (OES)를 통한 플라즈마 진단을 하였으며, 박막의 특성을 알아보기 위해 FT-IR, UV-visible, MOCON 테스트 등을 하였으며, $7.6{\times}10^{-3}g/m^2/day$의 투습도를 갖는 것을 확인하였다.

• 한국정보디스플레이학회:학술대회논문집
• /
• 2005.07a
• /
• pp.64-67
• /
• 2005

We fabricated an array consisting of organic TFTs(OTFT) and organic LEDs (OLED) in order to demonstrate the possible application of OTFTs to flexible active matrix OLED (AMOLED). The panel was composed of $64{\times}64$ pixels on 4 inch size polyethylene-terephehalate (PET) substrate in which each pixel had one OTFT integrated with one green OLED. The panel successfully displayed some letters and pictures by emitting green light with a luminance of $1.5\;cd/m^2$ at 6 V, which was controlled by the gate voltage of OTFT.

• 한국정보디스플레이학회:학술대회논문집
• /
• 2009.10a
• /
• pp.1457-1458
• /
• 2009

The fundamental parameters controlling ink-jet printing liquids are the viscosity and surface energy. The wetting contact angle determines the spread of a liquid drop on the surface and depends on the relative surface energy. The characteristics of silver ink-jet printing were studied with control of surface energy and head temperature. Polyethylene terephthalate(PET) film and Si-wafer(ptype) were used as substrates and atmospheric plasma was treated to control the surface energy. With silver ink, the hydrophilic surface treatment could reduce the radius of droplets due to the hydrophobic nature of silver ink.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
• /
• 2005.07a
• /
• pp.145-146
• /
• 2005

Cadmium sulphide (CdS) films have been prepared on polycarbonate (PC), polyethylene terephthalate (PET), and Coming 7059 substrates by r.f. magnetron sputtering technique at room temperature. A comparison of the properties of the films deposited on polymer and glass substrates was performed. In addition, the effect of the sputter pressure on the structural and optical properties of these films was evaluated.