• 제목/요약/키워드: CoDisplay

검색결과 1,336건 처리시간 0.03초

Well aligned carbon nanotubes grown on a large area Si substrate by thermal CVD

  • Lee, Cheol-Jin;Park, Jung-Hoon;Son, Kwon-Hee;Kim, Dae-Woon;Lee, Tae-Jae;Lyu, Seung-Chul;Kang, Seung-Youl;Lee, Jin-Ho;Park, Hyun-Ki;Lee, Chan-Jae;You, Jong-Hun
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2000년도 제1회 학술대회 논문집
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    • pp.57-58
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    • 2000
  • we have grown vertically aligned carbon nanotubes on a large area of Co-Ni codeposited Si substrates by thermal chemical vapor deposition using $C_2H_2$ gas. The carbon nanotubes grown by the thermal chemical vapor deposition are multi-wall structure, and the wall suface of nanotubes is covered with defective carbons or carbonaceous particles. The carbon nanotubes range from 50 to 120 nm in diameter and about 130 ${\mu}m$ in length at $950\;^{\circ}C$. Steric hindrance between nanotubes at an initial stage of the growth forces nanotubes to align vertically. The turn-on voltage was about 0.8 $V/{\mu}m$ with a current density of 0.1 ${\mu}A/cm^2$ and emission current reveals the Fowler-Nordheim mode.

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Color Simulation to Demonstrate the Effects of the Filter Layer with $CoAl_2O_4$ on Inner Face of CRT Panel

  • Kim, Sang-Mun
    • Journal of Information Display
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    • 제6권3호
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    • pp.26-29
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    • 2005
  • Nanosize cobalt aluminate($CoAl_2O_4$) power was coated as filter layer for us to improve the color purity and contrast performances on the inner face of CRT panel. We simulated color properties by measuring the transmittance and thickness of the coated filter layer. Contrast performance could be improved and color gamut was also changed by the selective light absorption of filter layer at 580${\sim}$605 nm.

Response Characteristics for Low Voltage Liquid Crystal Display Employing a Constant Charge Model

  • Kim, Mi-Soon;Huh, Su-Jung;Suh, Duck-Jong;Ahn, Yi-Joon;Lee, Kyung-Jin;Ahn, Seon-Hong;Kim, Kyeong-Hyeon;Kim, Sang-Soo
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2008년도 International Meeting on Information Display
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    • pp.228-230
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    • 2008
  • The response time characteristic of low voltage liquid crystals (LCs) is investigated and a new simulator for low voltage LCs is proposed. In order to enable low voltage operation, it is important to minimize Vth of LCs and variation of pixel voltage caused by dynamic capacitance operation of LC Display. Because dynamic capacitance variation is much larger for low voltage LC operation compared to that of conventional LC material, it is necessary to make a better model for dynamic capacitance operation. A proposed minimizing Vth of LCs and variation of pixel voltage study results through a new constant charge model improve response characteristics for low voltage LCs operation.

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A Dithering Algorithm for Full-Color (16,777,216-Color) Support in an LCD with 6-bit Driver ICs

  • Lee, Seung-Woo;Kim, Sang-Soo
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2004년도 Asia Display / IMID 04
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    • pp.389-392
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    • 2004
  • A new dithering algorithm, "Hi-FRC", to enable full (16,777,216) color display on LCD panel with 6-bit source D-IC's is presented. The conventional FRC can display only 16,194,277 colors. In addition, The LCD panel with Hi-FRC can meet the color grayscale linearity of TCO '03 because it can improve the color shift problem.

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Theoretical Study of d/p Margin

  • Oh, Jun-Sik;Lee, Han-Yong
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2000년도 제1회 학술대회 논문집
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    • pp.193-194
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    • 2000
  • We have calculated the d/p boundary values in which the low twist defect and the stripe domain defect can occur with dielectric constants and elastic constants and compared them with experimental data using the compensation factors. We estimated d/p margin for $250^{\circ}$ twist angle without experimental data and investigated qualitatively the reasonability of the behavior.

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디스플레이 산업에서의 협력-경쟁(co-opetition) 전략적 행동 특성 (Strategic Behavioral Characteristics of Co-opetition in the Display Industry)

  • 정효정;조용래
    • 기술혁신학회지
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    • 제20권3호
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    • pp.576-606
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    • 2017
  • 제품 수명주기의 급격한 단축화와 기술융합의 가속화와 같은 환경 변화의 대응 방안으로서 경쟁뿐만 아니라 기업 간 협력의 중요성도 강조되고 있다. 이러한 관점에서 본 연구는 디스플레이 산업에서 나타나는 코피티션의 맥락과 동향을 파악하고자 다음과 같은 연구목적 하에 연구를 진행하였다. 첫째, 전 세계 디스플레이 산업에서 기업들의 협력과 경쟁을 결정하는 경영 및 기술 관련 행위의 특성을 규명한다. 둘째, 전 세계 디스플레이 산업에서 협력과 경쟁 행위에서 향후 중요하게 부각되는 요소를 파악한다. 셋째, 한국의 디스플레이 산업에서 협력과 경쟁 행위의 특징과 향후 견지해야 할 전략적 방향을 제시한다. 이를 위하여, 최근 15년간의 전 세계 기업들의 협력 및 경쟁 행위 관련 정보를 수집하였으며, 기술시장의 전환시점을 고려하여 이를 두 기간으로 구분하였다. 기업 행위 정보를 이용하여 구축한 키워드 네트워크의 네트워크 지표 분석과 군집 분석을 통해 전 세계 기업과 국내 기업의 코피티션 동향을 비교 분석하였다. 분석 결과, 디스플레이 산업에서의 코피티션은 다양한 주제가 분산되어 나타나기보다는 특정 주제들이 중심이 되어 협력과 경쟁 활동을 주도하는 경향을 보였으며, 한국의 파생기술과 산업주도권 선점을 위한 선제적 활동이 두드러지게 나타났다. 본 연구는 전 세계 디스플레이 산업에서 나타나는 기술 분야의 전조 현상 및 이와 관련한 전략적 행동들을 포착하고, 한국 기업들의 선제적 역할을 파악하였다는데 의의가 있다. 연구결과는 향후 제품개발 및 기술마케팅 혁신 방향의 예측가능성을 제시하는데 활용 가능할 것으로 기대된다.

Colour cathodoluminescence of display materials

  • Nazarov, Michael;Nazarova, Tatiana;Ivannikov, Petr;Saparin, Gennadii
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.II
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    • pp.1580-1583
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    • 2005
  • We report simple new techniques to express analysis of display materials. Colour Cathodoluminescence combined with scanning electron microscopy and spectroscopy is a powerful, non-destructive, high-resolution method for investigation luminescent materials. Some applications of this method to powder phosphors used in display are demonstrated.

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Spatial Optical Modulator (SOM);Samsung's Light Modulator for the Next Generation Laser Display

  • Yun, Sang-Kyeong;Song, Jong-Hyeong;Lee, Tae-Won;Yeo, In-Jae;Choi, Yoon-Joon;Lee, Yeong-Gyu;An, Seung-Do;Han, Kyu-Bum;Victor, Yurlov;Park, Heung-Woo;Park, Chang-Su;Kim, Hee-Yeoun;Yang, Jeong-Suong;Cheong, Jong-Pil;Ryu, Seung-Won;Oh, Kwan-Young;Yang, Haeng-Seok;Hong, Yoon-Shik;Hong, Seok-Kee;Yoon, Sang-Kee;Jang, Jae-Wook;Kyoung, Je-Hong;Lim, Ohk-Kun;Kim, Chun-Gi;Lapchuk, Anatoliy;Ihar, Shyshkin;Lee, Seung-Wan;Kim, Sun-Ki;Hwang, Young-Nam;Woo, Ki-Suk;Shin, Seung-Wan;Kang, Jung-Chul;Park, Dong-Hyun
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
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    • pp.551-555
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    • 2006
  • A new type of diffractive spatial optical modulators, named SOM, has been developed by Samsung Electro-Mechanics for projection display and other applications. A laser display in full HD format $(1920{\times}1080)$ was successfully demonstrated by using prototype projection engines having SOM devices, signal processing circuits, and projection optics.

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Gasification from Surface during Discharge and Thermal Processes in Plasma Display Panel (PDP)

  • Soh, Hyun;Lee, Sang-Moo;Kim, Young-Chai
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2004년도 Asia Display / IMID 04
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    • pp.495-498
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    • 2004
  • PDP use the mixture of inert gases to generate a discharge inside display pixels. Inside of PDP, there exist highly reactive conditions in the gap between two glass panels. MgO layer and phosphor have been investigated as a function of discharge and thermal process. Impurities such as CO, $CO_2$, OH and $H_2O$ in discharge region may deteriorate the characteristics of PDP operation during life time. Change of impurity generation of various MgO and phosphor surfaces were measured by using x-ray photoelectron spectroscopy(XPS) and quadropole mass spectrometer (QMS). Carbon containing species such as C, CO and $CO_2$ were drastically increased on the surfaces during discharge and thermal treatment. Carbon impurities on the MgO and phosphor are the dominant factor for their instability.

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