• 한국정보디스플레이학회:학술대회논문집
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• 2006.08a
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• pp.803-805
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• 2006

In the paper we have proposed a fabrication method for color reflective cholesteric LCD by an in-plane switching. By applying an in plane electric field, the cholesteric helix could be partially unwound, which lead to shift of selective reflection and exhibition of color change.

• Journal of the Korean Institute of Telematics and Electronics
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• v.23 no.3
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• pp.384-388
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• 1986

This paper describes the design and fabrication of an integrated circuit that can detect the teletext signal included in a composite video signal. The circuit that is based on the comparatorlevel sampling method can detect a stable data signal even from an external circuit with large variation. It has been fabricated by the SST bipolar standard process. Its chip size is $2.5x3.78mm^2$.

• Journal of the Korean Society for Precision Engineering
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• v.21 no.10
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• pp.188-195
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• 2004

In this paper, we fabricated fluidic devices like micro-channel, pump, mixer and particular gas separator with the technology of stereolithouaphy using RP(rapid-prototyping). The fabricated fluidic devices are expected to be applied to develop Lab-on-a chip type liquid analyzer. Stereolithography technology seems effective for fabricating MEMS(Micro Electro Mechanical System) with complicated structure because it makes three dimensional fabrication possible but, exclusive devices are needed to be developed fur fabricating even more microscopic MEMS structure.

• Journal of the Korean Institute of Telematics and Electronics
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• v.27 no.6
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• pp.895-900
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• 1990

With the MOS device scailing down, the substrate concentration must increase in order to avoid punchthrough leakage current due to the DIBL(Drain Induced Barrier Lowering) effect. However the enhancement of the substrate concentration increases source, drain juntion capacitances and substrate current due to hot elelctron, degrading the speed characteristics and reliability of the MOS devices. In this paper, a new device, called CODE(Channel Only Dopant Enhancement) MOS, an its fabrication are proposed. By comparing the fabricated CODE MOSFET with the conventional device, the improvements on DIBL, substrate current and source, drain juntion capacitances are realized.

• Proceedings of the IEEK Conference
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• 1999.11a
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• pp.309-312
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• 1999

Fiber Bragg gratings have many applications such as fiber sensors, band-stop filters, add-drop filters, and mode convertors. In this paper, we present the fabrication method of various fiber Bragg gratings by using continuous wave UV-Argon(frequency-doubled Argon) laser. In our experiments, hydrogenation of fibers was used to enhance photosensitivity of fiber. And we fabricated fiber gratings by the phase mask method.

• Journal of the Korean Institute of Telematics and Electronics
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• v.24 no.4
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• pp.618-624
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• 1987

This paper describes the design and fabrication of a signal processing integrated circuit required for the recording and playback of VTR audio signal. The integrated circuit was designed using 8\ulcorner design rule and its chip size is 2.5x2.5mm\ulcorner It was fabricated using SST bipolar standard process technology. The measurement analysis of the fabricated circuit proves the satisfactory DC characteristics and its proper audio signal processing funcstion.

• Proceedings of the KIEE Conference
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• 2002.04a
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• pp.3-5
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• 2002

In this paper, we discuss an in-wheel motor for low-speed high-torque light transportation application. We present the design and fabrication results of an exterior type, brushless DC motor, and report the experimental results.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2002.10a
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• pp.160-163
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• 2002

Micro via hole Fabrication is studied by means of minimizing method to circuit size as many electric products developed to portable and minimize. Most of currently micro via hole fabrication using laser is that fabricate insulator layer using CO2 Laser after Cu layer by etching, or fabricate insulator layer using IR after trepanning Cu by UV. In this paper, it was performed that a metal layer and insulator layer were worked upon only one UV laser, and increase to processing speed by experiment.

• Electrical & Electronic Materials
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• v.9 no.9
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• pp.949-953
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• 1996

In this paper, the cathode materials of solid oxide fuel cell were fabricated, and the analysis of TG/DTA, XRD, thermal expansion and electric conductivity were investigated. As a result, thermal expansion coefficient of LSM was not quite different from that of electrolyte. And the performance of LSM(x=0.4) was more excellent than the others.

• Proceedings of the Korea Concrete Institute Conference
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• 1996.10a
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• pp.514-519
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• 1996

In this study, an investigation on the geometry control of the precast segmental method(PSM) was performed and GEOCON was developed. It is an interactive software to control the 3-dimensional geometry of precast segmental bridges during the construction progress. Specially, this paper emphasized that the fabrication stage of the precast segment is the most important for the geometry control in the PSM and also descussed about some problems which can be overlooked in developing and using the geometry control softwares by explaining the GEOCON's characteristics. GEOCON was successfully applied to the surrounding road of Pusan harbor.