• 한국정보디스플레이학회:학술대회논문집
• /
• 2006.08a
• /
• pp.1111-1114
• /
• 2006

We have developed a 2 inch LTPS-TFT AMOLED display with a top emission structure on a $50-{\mu}m-thick$ metal foil. The Active matrix back planes were fabricated with the p-channel LTPS TFT with a conventional pixel circuit consisting of 2 transistors and 1 capacitance. The p-channel TFTs on the metal foil exhibited the field-effect mobility of $22cm^2/Vs$. Finally, a images from prototype monochrome AMOLED displays are successfully presented, with $64{\times}88$ pixels and 56-ppi resolution.

• 한국정보디스플레이학회:학술대회논문집
• /
• 2006.08a
• /
• pp.1587-1590
• /
• 2006

Through the engineering of recombination region and energy transfer in organic light emitting device, blue and red light emitting device with good color stability has been successfully obtained. A Color control layer (CCL), which emits green light through the energy transfer from the emission layers, has been introduced into the blue and red light emitting device for RGB white OLED. The RGB white OLED showed the current efficiency of 13 cd/A and the CIE coordinates of (0.33, 0.38) at $1000\;cd/m^2$. The device exhibited very stable spectrum with respect to operating current density and the CIE coordinates varied from (0.34, 0.38) to (0.31, 0.37) for $100-22000\;cd/m^2$.

• ETRI Journal
• /
• v.29 no.4
• /
• pp.452-456
• /
• 2007

Very compact 4-channel 200-GHz-spacing external cavity lasers (ECLs) were fabricated by hybrid integration of reflection gratings and superluminescent laser diodes on a planar lightwave circuit chip. The fifth-order gratings as reflection gratings were formed using a conventional contact-mask photo-lithography process to achieve low-cost fabrication. The lasing wavelength of the fabricated ECLs matched the ITU grid with an accuracy of ${\pm}0.1$ nm, and optical powers were more than 0.4 mW at the injection current of 80 mA for all channels. The ECLs showed single mode operations with more than 30 dB side lobe suppression.

• 한국정보디스플레이학회:학술대회논문집
• /
• 2007.08a
• /
• pp.717-720
• /
• 2007

We fabricated the 3.5 inch QCIF AMOLED panel with ultra low temperature polycrystalline silicon TFT on the plastic substrate. To reduce the leakage current, we used the triple layered gate metal structure. To reduce the stress from inorganic dielectric layer, we applied the organic interlayer dielectric and the photoactive insulating layer. By using the interlayer dielectric as a capacitor, the mask steps are reduced up to five.

• 한국정보디스플레이학회:학술대회논문집
• /
• 2007.08a
• /
• pp.698-701
• /
• 2007

A top emission organic light emitting diode comprising of a triple anode on polycarbonate $film/TNATA/NPB/Alq_3:C545T/cathodes$ has been fabricated. The triple layer structure of Cr/Al/Cr allowed for fabrication of a crack-free anode and provided better higher work function than ITO anode.The anode showed compatibility with flexible plastic substrate and no crack was formed during bending test while ITO anode showed crack.

• ETRI Journal
• /
• v.28 no.3
• /
• pp.393-396
• /
• 2006

This letter proposes a new impedance matching scheme of a traveling wave electro-absorption modulator (TWEAM) module for a 60 GHz band radio-over-fiber (ROF) link. A microstrip band pass filter (BPF) was used to achieve impedance matching at the 60 GHz band, and termination resistance was carefully designed to obtain an input impedance close to $50\;{\Omega}$. Also, a bias circuit for the device was designed in the module. The measured return loss and frequency response show that the modulator module observes the characteristics of a filter without the need of a further tuning process.

• Journal of Korea Society of Industrial Information Systems
• /
• v.17 no.7
• /
• pp.101-110
• /
• 2012

These days, the environment of IT development goes through converging with various industries and technologies. Also, it accelerates to pioneer new markets and develop new technologies. This trend becomes one of the most important factors to explore new national growth engines in Korea. Thus, this research examines current trends of IT convergence in Korea. The strategic characteristics of IT convergence in overseas are briefly explained for comparing purpose. The governmental strategies or efforts regarding the IT convergence have been surveyed. Some example convergences of LG, Samsung, and POSCO as major IT industries in Korea have been introduced. It also identifies several buzz concepts in this field. The study aims to provide an insight about the activities that are happening in the field of IT convergence in Korea. Finally, the findings through the research have been summarized.

• 한국정보디스플레이학회:학술대회논문집
• /
• 2007.08a
• /
• pp.483-485
• /
• 2007

The active-matrix field emission display (AMFED) was fabricated by integrating carbon nanotube emitters on a-Si thin-film transistors. Also, the tapered macro-gate was adopted for high immunity to a high anode voltage and strong electron beam focusing. The fabricated AMFED was successfully driven with a low voltage of below 15 V.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2019.05a
• /
• pp.372-374
• /
• 2019

Recent college education in the face of the Fourth Industrial Revolution highlights problem-solving skills or creativity over the passing of professional knowledge. In addition, the need for convergence education is growing further as high-tech information and communication technologies are converging to create innovative changes. In this study, after IT convergence education was conducted and after general convergence education was conducted, the difference in creative problem solving capabilities was compared and analyzed. The study found that students who received IT convergence education had higher creative problem solving capabilities than general convergence education, and showed a statistically significant difference. In order to foster creative problem-solving skills, universities will need to promote IT convergence education in various courses.

• Journal of Engineering Education Research
• /
• v.22 no.2
• /
• pp.46-54
• /
• 2019

The purpose of this study is to discuss the current status and limitations of convergence education in universities and to explore new possibilities of engineering convergence education by analyzing characteristics and cases of self - design semesters as convergence education. As a result of this study, it was found that the education for fostering convergence ability is insufficient for the viewpoint of education. The types of convergence education could be classified into three categories. However, the concept and paradigm of convergence education has not been established precisely because it is made in a 'top-down' manner by the government. In addition, there was a limit of the lack of a foundation to operate the convergence education. However, A university's self-design semester, it shows the possibility of cultivating the overall convergence ability by giving autonomy and subjectivity to learners and through the acquisition of contextual knowledge and the ability of collaboration.