• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
• /
• 2003.05c
• /
• pp.291-294
• /
• 2003

The circuit substrate was made from the Low Temperature Cofired Ceramics(LTCC) that a $\varepsilon_\gamma$ was 7.8. Accumulated Varactor and the low noise transistor which were a Surface Mount Device-type element on LTCC substrate. Let passive element composed R, L, C with strip-line of three dimension in the multilayer substrate circuit inside, and one structure accumulate band-pass filter, resonator, a bias line, a matching circuit, and made it. Used Screen-Print process, and made Strip-line resonator. A design produced and multilayer-type VCO(Voltage Controlled Oscillator), and recognized a characteristic with the Spectrum Analyzer which was measurement equipment. Measured multilayer structure VCO is oscillation frequency 1292[MHz], oscillation output -28.38[dBm], hamonics characteristic -45[dBc] in control voltage 1.5[V], A phase noise is -68.22[dBc/Hz] in 100 KHz offset frequency. The oscillation frequency variable characteristic showed 30[MHz/V] characteristic, and consumption electric current is approximately 10[mA].

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 2006.05a
• /
• pp.587-588
• /
• 2006

Drop-on-Demand (DOD) inkjet printing technology, especially piezo-typed, has been paid attention by industries due to its inherent nature of unbeatable material usage and low cost manufacturing cost. Despite of these key advantages over any other competing manufacturing technologies, the primary disadvantage has been considered as its limited capability to produce fine resolution patterns with a commercially available DOD inkjet print head. Although the main effort has been focused on the production of a DOD inkjet print head with smaller nozzles to overcome this challenging issue, an alternative approach could be taken and it would enable to expand the employment of DOD inkjet printing technology to applications requiring fine patterns further more.

• Proceedings of the Korean Vacuum Society Conference
• /
• 2012.02a
• /
• pp.546-546
• /
• 2012

Traditional screen printing is still a dominant method to print electrodes on c-Si solar cells. In order to achieve higher efficiency for c-Si solar cells, improvement of the electrode material is one of the key approaches. Shadowing loss can be reduced by using high aspect ratio finger electrode with width of finger electrode less than 80um. The rheological properties of Ag paste for applying c-Si solar cells are improved by using Ag nanowires. The printing properties including the aspect ratio of printed electrode can be improved with higher Thixotropic index (T.I.) values.

• Journal of the Korea Fashion and Costume Design Association
• /
• v.2 no.2
• /
• pp.41-54
• /
• 2000

History of fashion and clothing is needed to understand modern fashion and to predict Future mode. The period of Romanticism in fine arts was from the end 18th century up to the first half of 19th century. The characteristics of shilouttes were found in the emphasis owomen's body line. This feature of romantic fashion is founded in 1960, 1970, 1980, 1990'mode. Major characters of this times are retro of romantic costume. As time goes by, more romantic fashion was set up and new corncern of 2000 fashion trend. The Characteristics of romantic image in 2000 of fashion trend are the emphasis of romantic details and decorations. Such as ruffle, frill, shirring, beads, spangle, sequin, flower. Trend colors are pink, lilac, aqua blue, yellow, green, pastel color. Trend materials chiffon, organza, satin, velvet, gauze, georgette, lace and glittery material. And floral print and stripe print. Forward­looking fashion is ethnic­romantic image influenced India. Trend and fashion have very close relationship and if it is fully comprehended, it will be good opportunity to awkardness againnst new fashion line.

• Journal of Information Management
• /
• v.42 no.4
• /
• pp.59-74
• /
• 2011

Despite of increasing digital materials, it is still important to collect print materials and keep their storage space for national level self supporting system as a science and technology(ST) material import country. In order to deal with the storage space issue, we conducted a ST material storage space and its expanding plan for Korea Institute of Science and Technology Information(KISTI). This paper examined first the domestic and overseas standard for the library stack space, analyzed current KISTI library stack space, and finally forecasted its demand in 2020 based on the increasing rate of the stack space. The expanding plans are suggested at the individual library level and also at the cooperative library storage facilities. The results of this paper will help that other libraries diagnose the present status and forecast the future library stack space when they face with the similar problems as it is examined in the KISTI case.

• Korean Journal of Materials Research
• /
• v.13 no.10
• /
• pp.663-667
• /
• 2003

The effects of paste materials on field emission properties in a carbon nanotube(CNT) cathode were investigated for high-efficient field emission displays. The major components in CNT paste for screen printing were a metallic Ag-paste, a dielectric glass-frit and CNT ink. The emission current from the cathode by an electron tunneling effect increased with an increase in the dielectric material fraction in the CNT paste, which is related to an increase of field enhancement factor in Fowler-Nordheim equation. The surface treatment used, after soft baking of the screen-printed CNT films, greatly affected the decrease in the turn-on field in CNT cathode and the uniformity of emission sites over the entire CNT film area.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.17 no.2
• /
• pp.263-272
• /
• 2013

Printed electronics creates electrically functional devices by printing on variety of substrates. Printing typically uses common printing equipment or other low-cost equipment suitable for defining patterns on material, such as screen printing, flexography, gravure, offset lithography and inkjet. Compared to conventional manufacturing of microelectronics, printed electronics is characterized by simpler and more cost-effective fabrication of high and low volume products. Now there is huge effort towards printing many other more functional components, from displays to transistors to photovoltaic cells, using the full range of printing technologies - from inkjet to roll to roll analogue print techniques. The market for printed electronics will rise from $1.99 billion in 2010 to $55.10 billion in 2020. In 2030, this industry could be $300 billion - larger than the silicon semiconductor industry - from lighting to displays[8].

• Journal of the Korean Graphic Arts Communication Society
• /
• v.28 no.2
• /
• pp.69-85
• /
• 2010

Currently, environmental contaminants that can cause Aromatic types of hydrocarbons, less than 1% made of Aromatic Free kind of used products, soybean oil products with linseed oil with the products, rice products using a wide range of environmentally ecological ink since 2000 is released quickly. All materials used in printed material, if the green is the best way to print the composite materials in industrial applications, because each process on the print quality and productivity, there can be many differences in this experiment because it accounts for a large proportion in the print general ink in the ink section and the International color standards(ISO2846-1:2006) certified ecological ink were compared. Therefore, in this paper has the ink released from the same company, each common general ink and ecological ink in the same condition which results were focused on whether the emerging international color standard(ISO 2846-1:2006) recognized for environmentally ecological ink printed color reproduction of the actual offset(color reproduction) how conformity to ISO 12647-2 standard color on the basis of the offset would check Color Reproduction. Based on the results of the experiments of this study, given the ecological ink coated paper, uncoated paper both color difference and the gamut of the ISO 12647-2 standard is suitable for ecological ink, the ink's color gamut reproduction, even more than existing international standards, there is no confirmed that the correct color reproduction possible. Using environmentally ecological ink industries is expected to respond to environmental policy.

• The Research Journal of the Costume Culture
• /
• v.6 no.2
• /
• pp.55-65
• /
• 1998

Actually, Cyberpunk is a compound word joined by cybernetics, which was used in control theory, and punk, was symbolized as anti-culture. Today, however, the definition of the term has been extended by various fields, used in many meanings. Therefore, the purpose of this study was to apply the Cyberpunk concepts to understand today　s fashion because understanding of the present fashion is a means to interpret our culture. For this purpose, the phenomenon of Cyberpunk in fashion was subdivided into three factors material, color, and style. The results of the study were as follows : First, the materials used were techno material, special print by computer for future feeling and geometrical pattern, optical pattern to improve visual effects. Second, the colors mainly used were silver, black and white, bright color, and off-color of computer animation to present future-oriented feeling. Third, the general styles used were fit and slim, simple and liner, dualistic style to express future　s image. In conclusion, the phenomena of Cyberpunk in fashion were expressed in material, color and style of fashion. Cyberpunk fashion was evident in T-shirts, sweaters, jackets, or as items of ornamentation such as pins, pendants, belts, and earrings, etc.

• The Research Journal of the Costume Culture
• /
• v.11 no.4
• /
• pp.578-590
• /
• 2003

The purpose of this study was to analyze the formative characteristics appeared in modem Kitsch fashion which has been shown through the empirical data photogrphes from the 2000's to 2003 and the formative characteristics of Kitsch were divided into the material, ornament, color, pattern to understand the modem Kitsch fashion. The findings of this study could be summarized as follows: First, the modem Kitsch fashion in the material was used cheap, counterfeit materials like vinyl, artificial leather, immitation fur, beads and non-artistic materials like metal, plastic, paper and voluptuous material like seethrough to express eroticism and superficiality as the characteristic of Kitsch. Second, Kitsch fashion in the ornament was shown over-decoration by using the various accessories like bracelet, metal belt, gloves, etc to express as childish and coarse mixtures as the characteristic of Kitsch. Third, the modem Kitsch fashion was using splendid and bright, primary colors to express the image of complicated accumulation. Fourth, the modern Kitsch fashion mainly in the pattern was using ethnic, folklore and pop art pattern or print used hippies and pop art fashion to express the primitive purity as bounding of civilized society.