• 한국정보디스플레이학회:학술대회논문집
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• 2008.10a
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• pp.816-819
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• 2008

A negative photoresist formulation was developed utilizing synthesized UV monomers containing imide linkage, photoinitiator, UV oligomer, and alkali developable polymer matrix. It was found that via-holes with good resolution, high transmittance and thermal resistance could be obtained by photolithographic process utilizing the negative-type photoresist formulations.

• 한국정보디스플레이학회:학술대회논문집
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• 2006.08a
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• pp.990-993
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• 2006

We fabricated top emission organic light emitting diode (TEOLED) with transparent metal cathode Barium and Silver bilayer. Very thin Ba/Ag bilayer was deposited on the organic layer by thermal evaporation. This cathode shows high transmittance over 70% in visible range. And the device with a Ba-Ag has a low turn on voltage and good electrical properties.

• 한국정보디스플레이학회:학술대회논문집
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• 2006.08a
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• pp.1334-1338
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• 2006

In this work, indium tin oxide (ITO) thin film was fabricated by indium-tin-organic sol including ITO nanoparticle. ITO nanoparticle showed ultrafine size about 5 nm and (222) preferred crystal structure. Also, ITO sol-gel thin film showed good optical transmittance over 83% and electrical resistance less than $7\;{\times}\;10^3\;{\Omega}$.

• 한국정보디스플레이학회:학술대회논문집
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• 2003.07a
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• pp.826-828
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• 2003

With a new PDP transparent dielectric layer formation technique, we were able to make dielectric layer with high transmittance by using dry film type dielectric material. We optimized dielectric pastes for dry film and they showed good process properties in lamination , drying and firing.

• Journal of Information Display
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• v.7 no.3
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• pp.23-26
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• 2006

We fabricated top emission organic light emitting diode (TEOLED) with transparent metal cathode Barium and Silver bilayer. Very thin Ba/Ag bilayer was deposited on the organic layer by thermal evaporation. This cathode showed high transmittance over 70% in visible range, and the device with a Ba-Ag has a low turn on voltage and good electrical properties.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2000.11a
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• pp.133-136
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• 2000

We investigated the improvement of viewing angle using a patterned double twisted (PDT) vertical-alignment (VA) cell mode on a homeotropic alignment layer. Good voltage-transmittance curves for negative dielectric anisotropic nematic liquid crystal (NLC) using the PDT-VA cell without a negative compensation film were obtained. The viewing angle of the PDT-VA cell without a negative compensation film was wider than that of a conventional VA cell.

• The Journal of the Korea institute of electronic communication sciences
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• v.14 no.2
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• pp.297-302
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• 2019

In this study, we deposited ITO thin films on buffer layer of $Nb_2O_5(8nm)/SiO_2(45nm)$ using DC magnetron sputtering method and investigated its electrical and optical properties with various DC powers(100~400 W). The surface of the ITO thin film was observed by AFM. All thin films had defected free surface such as pinholes and cracks. The thin film deposited at DC power of 200 W exhibited the smallest surface roughness of 1.431nm. As a result of electrical and optical measurements, the ITO thin film deposited at DC power of 200 W which showed the lowest resistivity of $3.03{\times}10^{-4}{\Omega}-cm$. The average transmittance in the visible light region(400 to 800 nm) and the transmittance at the wavelength of 550nm were found to be 85.8% and 87.1%, respectively. The chromaticity(b*) was also a relatively good value as 2.13. The figure of merit obtained from the sheet resistance of the ITO thin film, the average transmittance in the visible light region and the transmittance at the wavelength of 550nm were the best values of $2.50{\times}10^{-3}{\Omega}^{-1}$ and $2.90{\times}10^{-3}{\Omega}^{-1}$ at a DC power of 200W, respectively.

• Journal of the Microelectronics and Packaging Society
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• v.23 no.2
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• pp.85-89
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• 2016

In this paper, we studied effects of tilting angle of band pass filter on the characteristics of fluorescence imaging system. Theoretical modeling showed that transmittance and filtering range are highly dependent on the tilting angle. Measurements on transmittance as a function of wavelength confirmed that changes in transmittance and the band filter range are in good agreement with theoretical prediction. Therefore, characteristics of band pass filter can be precisely tuned by altering tilting angle of band pass filter in order to enhance fluorescence signal in bio imaging system.

• Proceedings of the Korean Vacuum Society Conference
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• 2015.08a
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• pp.244.1-244.1
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• 2015

The Ag Nanowire is one of the materials that are widely studied as alternatives to ITO and is available for large area, low cost process and the flexible transparent electrode. However, Ag nanowire can have the problem of a lack of stability at high temperatures, making this impossible to form a film. Using a structure of ITO/AgNW/ITO in photodetector device, we improved the properties of the ITO in the IR region and improved the thermal stability of the AgNW. The structure of ITO/AgNW/ITO has a high transmittance value of 89% at a wavelength of 900 nm and provide a good electrical property. The AgNWs embedded ITO film has a high transmittance, this is because of the light scattering from the AgNW. The thermal stability of the developed ITO/AgNWs/ITO films were investigated and found AgNWs embedded ITO films posses considerable high stability compared to the solo AgNWs on the Si surface. The ITO/AgNWs/ITO device showed a improved photo-response ratio compared to those of the conventional TC device in IR region. This is attributed to the high transmittance and low sheet resistance. We suggest an effective design scheme for IR-sensitive photodetection by using an AgNW embedded ITO.

• Journal of Sensor Science and Technology
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• v.21 no.6
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• pp.395-401
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• 2012

The bond strength of three types of $TiO_2$ coatings onto fluorine-doped $SnO_2$ (FTO) glass was investigated with the aid of a tape test according to ASTM D 3359-95. Transmittance was then measured using an UV-vis spectrophotometer in the wavelength range of 300 nm to 800 nm to evaluate the extent of adhesion of $TiO_2$ nanorods/nanoparticles on FTO glass. A sharp interface between the coating layer and the substrate was observed for single $TiO_2$ coating ($TiO_2$ nanorods/FTO glass), which may be detrimental to the bonding strength. In multicoating sample ($TiO_2$ nanorod/$TiO_2$ nanoparticle/$TiO_2$ nanoparticle/FTO glass), the tape test was not performed due to severe peeling-off prior to the test. On the other hand, the dual coating sample ($TiO_2$ nanorod/$TiO_2$ nanoparticle/FTO glass) showed minimum variation of transmittance (4%) after the test, suggesting that the topcoat adheres well with the FTO substrate due to the presence of the $TiO_2$ nanoparticle buffer layer. The use of a $TiO_2$ nanorod electrode layer with good adhesion may be attributed to the excellent dye sensitized solar cell performance.