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4 inch QVGA AMOLED display driven by GaInZnO TFT

  • Kwon, Jang-Yeon;Son, Kyoung-Seok;Jung, Ji-Sim;Kim, Tae-Sang;Ryu, Myung-Kwan;Park, Kyung-Bae;Kim, Jung-Woo;Lee, Young-Gu;Kim, Chang-Jung;Kim, Sun-Il;Park, Young-Soo;Lee, Sang-Yoon;Kim, Jong-Min
    • 한국정보디스플레이학회:학술대회논문집
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    • 2007.08a
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    • pp.141-144
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    • 2007

  • We demonstrated 4 inch QVGA AMOLED display driven by GaInZnO TFT. The structure of GaInZnO TFT is back channel etch (BCE) which is conventional structure for a-Si TFT. The electron mobility of GaInZnO TFT is $2.6\;cm^2/Vs$ and Vt is 3.8V. It is thought that GaInZnO TFT could be backplane for AMOLED TV.

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GripLaunch: a Novel Sensor-Based Mobile User Interface with Touch Sensing Housing

  • Chang, Wook;Park, Joon-Ah;Lee, Hyun-Jeong;Cho, Joon-Kee;Soh, Byung-Seok;Shim, Jung-Hyun;Yang, Gyung-Hye;Cho, Sung-Jung
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • v.6 no.4
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    • pp.304-313
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    • 2006

  • This paper describes a novel way of applying capacitive sensing technology to a mobile user interface. The key idea is to use grip-pattern, which is naturally produced when a user tries to use the mobile device, as a clue to determine an application to be launched. To this end, a capacitive touch sensing system is carefully designed and installed underneath the housing of the mobile device to capture the information of the user's grip-pattern. The captured data is then recognized by dedicated recognition algorithms. The feasibility of the proposed user interface system is thoroughly evaluated with various recognition tests.

  • https://doi.org/10.5391/IJFIS.2006.6.4.304 인용 PDF KSCI

Gradient Microstructure and Mechanical Properties of Fe-6%Mn Alloy by Different Sized Powder Stacking (다른 크기의 분말 적층을 통해 얻은 Fe-6%Mn합금의 경사 미세조직과 기계적 특성)

  • Seo, Namhyuk;Lee, Junho;Shin, Woocheol;Jeon, Junhyub;Park, Jungbin;Son, Seung Bae;Jung, Jae-Gil;Lee, Seok-Jae
    • Journal of Powder Materials
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    • v.29 no.5
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    • pp.382-389
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    • 2022

  • A typical trade-off relationship exists between strength and elongation in face-centered cubic metals. Studies have recently been conducted to enhance strength without ductility reduction through surface-treatment-based ultrasonic nanocrystalline surface modification (UNSM), which creates a gradient microstructure in which grains become smaller from the inside to the surface. The transformation-induced plasticity effect in Fe-Mn alloys results in excellent strength and ductility due to their high work-hardening rate. This rate is achieved through strain-induced martensitic transformation when an alloy is plastically deformed. In this study, Fe-6%Mn powders with different sizes were prepared by high-energy ball milling and sintered through spark plasma sintering to produce Fe-6%Mn samples. A gradient microstructure was obtained by stacking the different-sized powders to achieve similar effects as those derived from UNSM. A compressive test was performed to investigate the mechanical properties, including the yielding behavior. The deformed microstructure was observed through electron backscatter diffraction to determine the effects of gradient plastic deformation.

  • https://doi.org/10.4150/KPMI.2022.29.5.382 인용 PDF KSCI