• 제목/요약/키워드: Force Display

검색결과 380건 처리시간 0.031초

압력 센서를 이용한 보행 패턴 모니터링 시스템 구현 (Implementation of Gait Pattern Monitoring System Using FSR(Force Sensitive Resistor) Sensor)

  • 김기완
    • 반도체디스플레이기술학회지
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    • 제20권2호
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    • pp.56-60
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    • 2021
  • Recently, technologies for internet of things have been rapidly advanced with development of network. Also interest in smart healthcare that informs about motion information of users has been growing. In this paper, a system that is monitoring the weight on both feet by using aduino and FSR(Force Sensitive Resistor) Sensor is implemented. A 4-channel sensor driver module was implemented to measure a more accurate weight value. It is monitoring the weight on both feet by the using an application for either your PC or mobile device. Mobile applications can contribute to reducing human damage by sending messages along with location in emergency situations, such as injuries caused by falls during outdoor activities.

Si (001) 표면 결함 원자힘 현미경 전산모사 (Atomic Force Microscopy Simulation for Si (001) Surface Defects)

  • 조준영;김대희;김유리;김기영;김영철
    • 반도체디스플레이기술학회지
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    • 제17권4호
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    • pp.1-5
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    • 2018
  • Atomic force microscopy (AFM) simulation for Si (001) surface defects was conducted by using density functional theory (DFT). Three major defects on the Si (001) surface are difficult to analyze due to external noises that are always present in the images obtained by AFM. Noise-free surface defects obtained by simulation can help identify the real surface defects on AFM images. The surface defects were first optimized by using a DFT code. The AFM tip was designed by using five carbon atoms and positioned on the surface to calculate the system's energy. Forces between tip and surface were calculated from the energy data and converted into an AFM image. The simulated AFM images are noise-free and, therefore, can help evaluate the real surface defects present on the measured AFM images.

야간 투시 영상시스템의 Green A에 적합한 작은 형태인자를 가진 LED에 관한 연구 (A Study on LED with Small Form Factor Suitable for Green A of Night Vision Imaging System)

  • 김태훈;유창한;윤현주;김민평;윤호신
    • 반도체디스플레이기술학회지
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    • 제20권4호
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    • pp.62-67
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    • 2021
  • In this study, we have successfully developed an unique NVIS Green A compatible LED by combining two technologies. One is white LED made with a black EMC (epoxy molding compound) lead frame. The other is NVIS Green A filter that shields the near infrared region made in the film method. The form factor of the developed NVIS Green A compatible LED was 2.0 × 2.0 × 0.95 mm. And it is possible to satisfy NVIS radiance and color limit specified in MIL-STD-3009 by controlling the concentration of Green A dye and the thickness of the NVIS filter as well as adjusting of color temperature of the white LED. From these results, we are expected that the developed NVIS Green A suitable LED is a promising solution for the weight reduction and the cost reduction of avionic applications.

The electronic structures and the electrical properties of ITO thin films by REELS and c-AFM

  • Baik, Min-Kyung;Joo, Min-Ho;Choi, Jong-Kwon;Park, Kyu-Ho;Sung, Myeon-Chang;Lee, Ho-Nyun;Kim, Hong-Gyu
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권2호
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    • pp.1333-1335
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    • 2007
  • We studied the surface defects and the current distributions of ITO thin films by reflected electron energy loss spectroscopy (REELS) and conductiveatomic force microscope (c-AFM). The ohmic behavior of ITO thin film was observed at $230\;^{\circ}C$ annealed sample. The defects related to the electronic structure decreased after anneal process.

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압전 세라믹을 이용한 평판유리의 절단 거동에 관한 연구 (A Study on Cutting Behavior of Plate Glass Using a Piezoelectric Ceramics Actuator)

  • 이강원;제태진;최성대;정선환
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2006년도 춘계학술대회 논문집
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    • pp.249-250
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    • 2006
  • Recently FPD(Flat Panel Display) is used in various field to display enormous information. So cutting technique of flat panel display is needed for producing variety display merchandises. In present, cutting methods of flat panel glass includes breaking process. But this process occurs many glass particles. This glass particles are directly related badness of merchandise and falling productivity. In this paper, to cut front substrate glass of LCD and to get optimized cutting condition are tried fur eliminating breaking process with developed glass cutting machine using a Piezoelectric ceramics actuator. It is known that the vibration of Piezoelectric Ceramic have effect in crack proceeding through the analysis of fracture section.

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탄소 나노튜브를 활용한 나노 구조물에 대한 시뮬레이션 연구 (A Study of Nanostructure by Carbon Nanotube Simulation)

  • 이준하;이흥주;송영진;윤영식
    • 반도체디스플레이기술학회지
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    • 제4권3호
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    • pp.11-15
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    • 2005
  • This paper shows that carbon nanotubes can be applied to a nanopipette. Nano space in atomic force microscope multi wall carbon nanotube tips is filled with molecules and atoms with charges and then, the tips can be applied to nanopipette when the encapsulated media flow off under applying electrostatic farces. Since the nano space inside the tips can be refilled, the tips can be permanently used in ideal conditions of no chemical reaction and no mechanical deformation. Molecular dynamics simulations for nanopipette applications demonstrated the possibility of nano-lithography or single-metallofullerene-transistor array fabrication.

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The Study of the Charge Transport on the Surface Layer of the Patterned Vertical Alignment(PVA) Mode

  • Choi, Nak-Cho;You, Jae-Yong;Jung, Ji-Young;Rhie, Kung-Won;Shin, Sung-Tae
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권1호
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    • pp.571-573
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    • 2007
  • It is known that the main source of the area image sticking is the ion charge adsorption on the alignment layer. We found out that the adsorption of the ion charge of the liquid crystal in the cell was physisorption, which takes place between all molecules on any surface providing the adsorption force is small.

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대전입자의 동작특성 분석 (Analysis of Force Acting on a Charged Particle)

  • 권순형;김영훈;김원근;한정인
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2007년도 Techno-Fair 및 추계학술대회 논문집 전기물성,응용부문
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    • pp.77-78
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    • 2007
  • 전계가 있는 밀폐된 공간에서의 대전입자에 작용하는 힘에 대한 수식들을 정의하고 구동 전압을 추출할 수 있는 상관 관계를 살펴보았다. 입자의 크기, 전하량 등 여러 가지 실험적인 factor들을 변화시켜본 결과 구동 전압에 많은 영향을 주는 것으로 나타났다. 특히 구동 전압의 추출을 위해 도입된 여러 가지 factor들은 구동 전압에 독립적으로 작용하는 것이 아니라 서로 복합적인 작용을 하는것으로 결과가 얻어졌다.

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탄소나노튜브로 둘러싸인 나노와이어 구조의 오실레이터 응용 (Application of Carbon Nanotube Encapsulating Nanowire)

  • 송영진
    • 반도체디스플레이기술학회지
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    • 제6권4호
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    • pp.1-4
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    • 2007
  • Carbon nanotube oscillators encapsulating copper nanowire were investigated by molecular dynamics simulations. The excess forces due to the carbon-carbon van der Waals interactions are higher than the excess force due to carbon-copper interactions. And the masses of copper atoms are higher than those of carbon atoms. So, the carbon atoms are easier accelerated than the copper atoms. When the encapsulated copper nanowire deforms the encapsulating nanotube, the frequency can not be estimated by the mass-frequency dependence in classical oscillation theory.

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나노전자소자로서의 관성센서 시스템에 관한 연구 (A Study on Inertia Sensor System for Nano Electronic Device)

  • 이준하
    • 반도체디스플레이기술학회지
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    • 제8권4호
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    • pp.21-24
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    • 2009
  • We investigated a nanoscale inertia sensor based on telescoping carbon nanotubes, using classical molecular dynamics simulations. The position of the telescoping nanotubes is controlled by the centrifugal force exerted by the rotation platform, thus, position shifts are determined by the capacitance between carbon nanotubes and the electrode, and the operating frequency of the carbon nanotube oscillator. This measurement system, tracking oscillations of the carbon nanotube oscillator, can be used as the sensor for numerous types of devices, such as motion detectors, accelerometers and acoustic sensors.

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