• Title/Summary/Keyword: ENG

Search Result 20,516, Processing Time 0.046 seconds

Electro-Optical Performances of In plane Switching (IPS) Cell on the Inorganic Thin Film by Ion Beam (IB) Method

  • Kim, Sang-Hoon;Hwang, Jeoung-Yeon;Kim, Jong-Hwan;Han, Jung-Min;Seo, Dae-Shik;Kim, Sung-Yeon;Oh, Byeong-Yun;Myoung, Jae-Min
    • 한국정보디스플레이학회:학술대회논문집
    • /
    • 2006.08a
    • /
    • pp.796-799
    • /
    • 2006

  • We studied the nematic liquid crystal (NLC) alignment capability by the Ion beam (IB) alignment method on a NDLC (Nitrogen doped Diamond Like Carbon) as a C:H thin film, and investigated electro-optical (EO) performances of the IB aligned In plane switching (IPS) cell with NDLC surface. A good LC alignment by IB exposure on a NDLC surface was achieved. Monodomain alignment of the IB aligned IPS cell can be observed. The good electro-optical characteristics of the IB aligned IPS cell was observed with oblique IB exposure on the NDLC as a-C:H thin film for 1min.

  • PDF

Implementation of a Circuit for the Enhancement of Signal to Noise Ratios of Current Signal in a Artificial Heart (인공심장 전류 신호의 신호대 잡음비 개선을 위한 회로 구현)

  • Choi, J.H.;Lee, J.H.;Choi, W.W.;Ahn, J.M.;Kim, W.E.;Lee, J.J.;Om, K.S.;Choi, J.S.;Park, S.K.;Cho, Y.H.;Kim, H.C.;Min, B.G.
    • Proceedings of the KOSOMBE Conference
    • /
    • v.1996 no.11
    • /
    • pp.277-280
    • /
    • 1996

  • We have developed a ground-isolation circuit in order to reduce the noise of the internal controller system for the total artificial heart(TAH) and ventricular assist device(VAD). Using the ground-isolation technique, we could transmit the analog target signal to other pheriperal device including IBM PC via RS232C and polygraph, with no noise. Experimental results of VAD showed that there was less impulsive noise in current signal which caused in our previous conventional system. Therefore it could be proved that implementation of isolation technique is very effective to improve the signal to noise ratios of analog signal transmission for TAH or VAD.

  • PDF

A Study on Miniaturization of Digital Controller for both Implantable Total Artificial Heart (TAH) and Ventricular Assist Device (VAD) using PSD302 (PSD302를 이용한 완전 이식형 인공심장 및 심실보조장치 제어용 디지탈 콘트롤러 소형화에 관한 연구)

  • Lee, J.H.;Choi, J.H.;Lee, J.J.;Kim, W.E.;Om, K.S.;Choi, J.S.;Ahn, J.M.;Choi, W.W.;Park, S.K.;Cho, Y.H.;Kim, H.C.;Min, B.G.
    • Proceedings of the KOSOMBE Conference
    • /
    • v.1996 no.11
    • /
    • pp.273-276
    • /
    • 1996

  • In the Total Artificial Heart (TAH) and Ventricular Assist Device (VAD), the size implanting the internal controller into human body is very serious problem. Hence, we need the size reduction of that controller for safe implantation. Using PSD302 chip for microcontroller-based applications, we could decrease the number of components in the digital control board and miniaturize the digital control board. We could replace a ROM, RAM, and a latch with that single chip, so the size of the newly developed board could be half the previous board.

  • PDF