• 제목/요약/키워드: Research laboratory

검색결과 16,394건 처리시간 0.04초

Structure-related Characteristics of SiGe HBT and 2.4 GHz Down-conversion Mixer

  • Lee, Sang-Heung;Kim, Sang-Hoon;Lee, Ja-Yol;Bae, Hyun-Cheol;Lee, Seung-Yun;Kang, Jin-Yeong;Kim, Bo-Woo
    • JSTS:Journal of Semiconductor Technology and Science
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    • 제6권2호
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    • pp.114-118
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    • 2006
  • In this paper, the effect of base and collector structures on DC, small signal characteristics of SiGe HBTs fabricated by RPCVD was investigated. The structure of SiGe HBTs was designed into four types as follows: SiGe HBT structures which are standard, apply extrinsic-base SEG selective epitaxial growth (SEG), apply selective collector implantation (SCI), and apply both extrinsic-base SEG and SCI. We verified the devices could be applied to the fabrication of RFIC chip through a fully integrated 2.4 GHz down-conversion mixer.

Secondary Electron Emission Characteristics of Functional Layer in AC-PDP

  • Son, Chang-Gil;Han, Young-Gyu;Kim, Yong-Hee;Cho, Byeong-Seong;Hong, Young-Jun;Song, Ki-Baek;Bae, Young-Joo;Kim, In-Tae;Choi, Eun-Ha
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
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    • pp.736-739
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    • 2009
  • We have studied that the secondary electron emission characteristics of functional layers which have different kinds of MgO sub-micrometer size powder in AC-PDP. We used cathodoluminescence(CL) and gamma focused ion beam (${\gamma}$-FIB) system for measurement of secondary electron emission characteristics. Also we made 6 inch test panel which applied functional layers for evaluation of discharge characteristics.

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PHUND (Portable Head Up Navigation Display) for a Motor vehicle

  • Shin, Sung-Chul;Hahn, Sang-Hoon;Chi, Yong-Seok;Ahn, Tae-Jeong;Choi, Ho-Young;Park, Tae-Soo;Kim, Sung-Tae
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권1호
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    • pp.421-424
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    • 2007
  • We have succeeded in designing a PHUND (portable head up navigation display), which has a compact system with a MD panel and full color display device using RGB LED sources. The PHUND has been developed as an alternative to conventional built-in type HUD system targeting the high volume aftermarket with an affordable price.

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The triple layer anode for flexible top emission organic lightemitting devices

  • Chung, Sung-Mook;Hwang, Chi-Sun;Lee, Jeong-Ik;KoPark, Sang-Hee;Yang, Yong-Suk;Do, Lee-Mi;Chu, Hye-Yong
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권1호
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    • pp.698-701
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    • 2007
  • A top emission organic light emitting diode comprising of a triple anode on polycarbonate $film/TNATA/NPB/Alq_3:C545T/cathodes$ has been fabricated. The triple layer structure of Cr/Al/Cr allowed for fabrication of a crack-free anode and provided better higher work function than ITO anode.The anode showed compatibility with flexible plastic substrate and no crack was formed during bending test while ITO anode showed crack.

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Environmental fatigue correction factor model for domestic nuclear-grade low-alloy steel

  • Gao, Jun;Liu, Chang;Tan, Jibo;Zhang, Ziyu;Wu, Xinqiang;Han, En-Hou;Shen, Rui;Wang, Bingxi;Ke, Wei
    • Nuclear Engineering and Technology
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    • 제53권8호
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    • pp.2600-2609
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    • 2021
  • Low cycle fatigue behaviors of SA508-3 low-alloy steel were investigated in room-temperature air, high-temperature air and in light water reactor (LWR) water environments. The fatigue mean curve and design curve for the low-alloy steel are developed based on the fatigue data in room-temperature and high-temperature air. The environmental fatigue model for low-alloy steel is developed by the environmental fatigue correction factor (Fen) methodology based on the fatigue data in LWR water environments with the consideration of effects of strain rate, temperature, and dissolved oxygen concentration on the fatigue life.