• 제목/요약/키워드: Engineering School

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Discharge Characteristics of a Flat Plasma Backlight with Long Electrode Gap

  • Li, Q.;Luo, Y.;Zheng, Y.;Yang, L.;Cui, Y.;Liu, J.;Zhang, Z.;Tolner, H.
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2008년도 International Meeting on Information Display
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    • pp.795-798
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    • 2008

  • The discharge characteristics of a flat plasma backlight with long electrode gap are investigated. The effect of operating voltage and repetition rate on brightness and luminance efficiency is investigated. A new high efficacy mode is found at low frequencies around 15-40 KHz; a lumen efficacy of 15.3 lm/W is achieved at a luminance of $2400\;cd/m^2$. In the high brightness mode, present at high voltage, we find a maximum luminance of $5900\;cd/m^2$ at 30KHz.

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Characteristics of MINOS Structure using $TiO_2$ as Blocking Layer for Nonvolatile Memory applicable to OLED

  • Lee, Kwang-Soo;Jung, Sung-Wook;Kim, Kyung-Hae;Jang, Kyung-Soo;Hwang, Sung-Hyun;Lee, Jeoung-In;Park, Hyung-Jun;Kim, Jae-Hong;Son, Hyuk-Joo;Yi, Jun-Sin
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권2호
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    • pp.1284-1287
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    • 2007

  • Titanium dioxide ($TiO_2$) is promising candidate for fabricating blocking layer of gate dielectrics in non-volatile memory (NVM). In this work, we investigated $TiO_2$ as high dielectric constant material instead of silicon dioxide ($SiO_2$), which is generally used as blocking layer for NVM.

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Polarization Converting Waveguide Devices Incorporating UV-curable Reactive Mesogen

  • Chu, Woo-Sung;Kim, Sung-Moon;Kim, Jun-Whee;Kim, Kyung-Jo;Oh, Min-Cheol
    • Journal of the Optical Society of Korea
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    • 제15권3호
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    • pp.289-292
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    • 2011

  • Reactive mesogen (RM) is an organic liquid crystal molecule that can be self-aligned to have an optic axis of birefringence when coated over a polyimide alignment film. A free-standing optical wave-plate film consisting of RM and low-loss optical polymers was fabricated in this work, and the film was inserted across the polymer waveguide to form an integrated optical polarization converter. For convenient evaluation of the polarization converters, a waveguide polarizer and analyzer were fabricated in series. The polarization conversion efficiency was measured to be 25 dB for the wavelength range from 1520 to 1580 nm. The wave plate exhibited a temperature-dependent retardation of $4.5^{\circ}$ for a temperature change from 25 to $100^{\circ}C$.

  • https://doi.org/10.3807/JOSK.2011.15.3.289 인용 PDF KSCI

마이크로 전기${\cdot}$화학 복합형상 제거시스템 (Microfactory for Electro-Chemical Machining)

  • 이희원;국경훈;김기원;김태곤;유병한;정재원;한민섭;정영훈;민병권;이상조
    • 한국공작기계학회:학술대회논문집
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    • 한국공작기계학회 2005년도 춘계학술대회 논문집
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    • pp.389-394
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    • 2005

  • Microfactory is effective method for machining micro size component. Electro-chemical machining can be more suitable to a microfactory than other machining methods in terms of maintaining high accuracy. Surface profile of EDM Machined component is predicted by micro EDM simulation using superpositioning spark crater. Planar motor and micro pump are developed to construct microfactory system.

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