고온에서 제조된 실리콘 주입 p채널 다결정 실리콘 박막 트랜지스터의 전기 특성 변화 연구

이진민,Lee, Jin-Min 한국전기전자재료학회 2011 전기전자재료학회논문지 Vol.24 No.5

Analyzing electrical degradation of polycrystalline silicon transistor to applicable at several environment is very important issue. In this research, after fabricating p channel poly crystalline silicon TFT (thin film transistor) electrical characteristics were compare and analized that changed by gate bias with first measurement. As a result on and off current was reduced by variation of gate bias and especially re duce ratio of off current was reduced by $7.1{\times}10^1$. On/off current ratio, threshold voltage and electron mobility increased. Also, when channel length gets shorter on/off current ratio was increased more and thresh old voltage increased less. It was cause due to electron trap and de-trap to gate silicon oxide by variation of gate bias.

스텝 어닐링에 의한 저온 및 고온 n형 다결정 실리콘 박막 트랜지스터의 전기적 특성 분석

이진민,Lee, Jin-Min 한국전기전자재료학회 2011 전기전자재료학회논문지 Vol.24 No.7

In this paper, experimental analyses have been performed to compare the electrical characteristics of n channel LT(low temperature) and HT(high temperature) poly-Si TFTs(polycrystalline silicon thin film transistors) on quartz substrate according to activated step annealing. The size of the particles step annealed at low temperature are bigger than high temperature poly-Si TFTs and measurements show that the electric characteristics those are transconductance, threshold voltage, electric effective mobility, on and off current of step annealed at LT poly-Si TFTs are high more than HT poly-Si TFT's. Especially we can estimated the defect in the activated grade poly crystalline silicon and the grain boundary of LT poly-Si TFT have more high than HT poly-Si TFT's due to high off electric current. Even though the size of particles of step annealed at low temperature, the electrical characteristics of LT poly-Si TFTs were investigated deterioration phenomena that is decrease on/off current ratio depend on high off current due to defects in active silicon layer.

고온에서 제작된 n채널 다결정 실리콘 박막 트랜지스터의 단채널 효과 연구

이진민,Lee, Jin-Min 한국전기전자재료학회 2011 전기전자재료학회논문지 Vol.24 No.5

To integrate the sensor driver and logic circuits, fabricating down scaled transistors has been main issue. At this research, short channel effects were analyzed after n channel polycrystalline silicon thin film transistor was fabricated at high temperature. As a result, on current, on/off current ratio and transconductance were increased but threshold voltage, electron mobility and s-slope were reduced with a decrease of channel length. When carriers that develop at grain boundary in activated polycrystalline silicon have no gate biased, on current was increased with punch through by drain current. Also, due to BJT effect (parallel bipolar effect) that developed under region of channel by increase of gate voltage on current was rapidly increased.

폴리이미드 박막과 스퍼터링 방법으로 증착한 상부금속 그레인이 용량형 습도센서의 전기적 특성에 미치는 영향

이진민,Lee, Jin-Min 한국전기전자재료학회 2011 전기전자재료학회논문지 Vol.24 No.3

This research, integratable capacitive relative humidity sensor was produced using polyimide on glass substrate. Also, at the time of upper electrode formation, upper electrode grain size was affected by giving changes to sputtering condition. Through this analyzing electrical characteristics affect from capacitive relative humidity sensor was possible. Capacitance of capacitive relative humidity sensor was 330 pF, linearity of 0.6%FS and it showed less than 3% of low hysterisis. Specially, hysterisis was affected more from interface than interstitial. Also was affected by the grain size which is one of the formation condition of upper electrode.

누설전류 감소를 위한 Bird's Beak 공정을 이용한 다결정 실리콘 박막 트랜지스터의 구조 연구

이진민,Lee, Jin-Min 한국전기전자재료학회 2011 전기전자재료학회논문지 Vol.24 No.2

To stabilize the electric characteristic of Silicon Thin Film Transistor, reducing the current leakage is most important issue. To reduce the current leakage, many ideas were suggested. But the increase of mask layer also increased the cost. On this research Bird's Beak process was use to present element. Using Silvaco simulator, it was proven that it was able to reduce current leakage without mask layer. As a result, it was possible to suggest the structure that can reduce the current leakage to 1.39nA without having mask layer increase. Also, I was able to lead the result that electric characteristic (on/off current ratio) was improved compare from conventional structure.

실리콘 게이트전극을 갖는 고온소자와 금속 게이트전극을 갖는 P형 저온 다결정 실리콘 박막 트랜지스터의 전기특성 비교 연구

이진민,Lee, Jin-Min 한국전기전자재료학회 2011 전기전자재료학회논문지 Vol.24 No.6

Poly Si TFTs (poly silicon thin film transistors) with p channel those are annealed HT (high temperature) with gate poly crystalline silicon and LT (low temperature) with metal gate electrode were fabricated on quartz substrate using the analyzed data and compared according to the activated grade silicon thin films and the size of device channel. The electrical characteristics of HT poly-Si TFTs increased those are the on current, electron mobility and decrease threshold voltage by the quality of particles of active thin films annealed at high temperature. But the on/off current ratio reduced by increase of the off current depend on the hot carrier applied to high gate voltage. Even though the size of the particles annealed at low temperature are bigger than HT poly-Si TFTs due to defect in the activated grade poly crystal silicon and the grain boundary, the characteristics of LT poly-Si TFTs were investigated deterioration phenomena those are decrease the electric off current, electron mobility and increase threshold voltage. The results of transconductance show that slope depend on the quality of particles and the amplitude depend on the size of the active silicon particles.

알버 엘바즈(Alber Elbaz)에 의한 랑방(Lanvin) 디자인의 미적 특성

이진민 ( Jin-min Lee ) 한국디자인트렌드학회 2011 한국디자인포럼 Vol.33 No.-

본 연구는 알버 엘바즈에 의해 제 2의 전성기를 맞으며 부활한 랑방 디자인의 미적 특성에 관한 연구로 브랜드의 전통성을 잃지 않으면서 디자이너가 추구하는 브랜드의 새로운 미적 가치와 특성을 고찰하는데 목적을 두었다. 연구 결과, 알버 엘바즈에 의해 계승되고 있는 랑방 디자인의 미적특성은 현대적 낭만미, 실험적 형태미, 섬세한 장식미로 고찰되었다. 첫째, 현대적 낭만미는 낭만적 감성과 단순함의 결합이라는 잔느 랑방 고유의 미적 특성을 현대적으로 재해석한 것으로서, 과거 랑방의 드레스를 연상시키는 편안하고 전통적인 실루엣과 로맨틱한 디테일, 고급스러운 소재 위에 심플한 현대적 감각을 더하여 표현되었다. 둘째, 실험적 형태미는 기존의 전통적 랑방 디자인에 엘바즈의 혁신적이고 실험적인 조형 감각이 더해진 새로운 표현 방식으로서, 과장된 볼륨과 비대칭, 비구조적 디자인을 통해 아방가르드한 조형적 실루엣을 표현하였다. 셋째, 섬세한 장식미는 의복전반에 고급스러운 장식적 디테일을 사용함으로써 표출되는 미적특성으로, 과거 잔느 랑방이 보여주었던 섬세한 수공예적 디테일을 더욱 발전시킨 다양한 트리밍과 직물 자체를 이용한 디테일의 활용을 통해 좀 더 유연하고 화려하며, 우아한 장식미를 추구하고 있다. This study is on the aesthetic characteristics of Lanvin design succeeded by Alber Elbaz, and tried to understand his pursuing brand`s new design concept and aesthetic characteristics. In this study, the three key aesthetic characteristics of Lanvin designed by Alber Elbaz are (1) modern-romantic beauty (2) aesthetic of experimental form (3) the beauty of delicate decoration. First, the modern-romantic characteristic is a reinterpretation of Jeanne Lanvin`s romantic simplicity. It is expressed in comport & traditional silhouettes of dresses, romantic details, and luxurious materials based on simple and contemporary feeling. Second, aesthetic of experimental form is new mode of expression of Alber Elbaz`s innovative and experimental sense of the fom. Throurh the exaggerated volume, asymmetrical & unconstructed design, the Elbaz`s avant-garde silhouette was expressed. Third, the beauty of delicate decoration is expressed in various trimmings and luxurious self-fabric details based on Jeanne Lanvin`s original handcrafted details. Elbaz pursues the beauty of decoration which is more splendid and elegant.

동양 미학적 관점에 의한 한, 일 여성 전통 복식의 미적 특성 고찰

이진민(Jin Min Lee),김민자(Min Ja Kim) 한국복식학회 2006 服飾 Vol.56 No.5

횡방향 모드추적을 고려한 코일스프링의 신뢰성기반 최적설계

이진민(Jin Min Lee),장준용(Junyong Jang),이태희(Tae Hee Lee) 대한기계학회 2013 大韓機械學會論文集A Vol.37 No.6

구조물의 최적설계 시 설계변수의 값이 변화할 때 모드전환이 일어날 수 있다. 만약 이 모드전환을 추적하지 않으면 최적설계를 위한 고유진동수나 모드는 설계자가 의도하지 않은 모드로 평가될 수 있다. 따라서 설계변수의 값이 변화할 때마다 의도한 고유진동수와 모드의 동일성을 유지할 수 있도록 모드추적이 적용되어야 한다. 또한 설계변수가 불확실성을 포함하고 있는 설계 문제의 경우, 이를 고려한 신뢰성 기반 최적설계를 수행해야 한다. 본 연구에서는 압축기를 지지하는 관절스프링의 한 부품인 압축 코일스프링의 모드추적을 고려한 신뢰성기반 최적설계를 수행한다. 모드추적 기법은 최적화 기법들과 연동이 쉬운 다중응답접근법 기반 크리깅 메타모델을 이용하며, 신뢰성해석 기법은 크리깅 메타모델 기반 몬테카를로 추출법을 이용한다. When the values of design variables change, mode switching can often occur. If the mode of interest is not tracked, the frequencies and modes for design optimization may be miscalculated owing to modes that differ from the intended ones. Thus, mode tracking must be employed to identify the frequencies and modes of interest whenever the values of design variables change during optimization. Furthermore, reliability-based design optimization (RBDO) must be performed for design problems with design variables containing uncertainty. In this research, we perform RBDO considering the mode tracking of a compressive coil spring, i.e., a component of the joint spring that supports a compressor, with design variables containing uncertainty by using only kriging metamodels based on multiple responses approach (MRA) without existing mode tracking methods. The reliability analyses for RBDO are employed using kriging metamodel-based Monte Carlo simulation.

실내공간에 나타나는 '신장식 경향(新裝飾 傾向)'에 관한 연구

이진민(Lee, Jin-Min),이수정(Lee, Soo-Jeong) 한국실내디자인학회 2004 한국실내디자인학회논문집 Vol.13 No.4