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Electro-Optical Characteristics of External Electrode Fluorescent Lamp depending on Gas pressure and mixing ratio

  • Kim, Hyung-Dong;Jeon, Hyun-Woo;Lee, Chang-Ho;Yoon, Jung-Hyun;Kim, Jae-Bum;Lim, Jong-Ho;Shin, Jong-Keun;Chung, In-Jae
    • 한국정보디스플레이학회:학술대회논문집
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    • 2008.10a
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    • pp.792-794
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    • 2008
  • We investigated influence of gas pressure and mixing ratio on the electro-optical properties of External Electrode Fluorescent Lamp (EEFL). The experimental results indicated that luminance and efficiency became the maximum at lower gas pressure and Ar mixing ratio.

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Application of the New Panel Structure for High Luminous Efficiency in AC-PDPs

  • Kim, Jae-Sung;Jeon, Chung-Huan;Lee, Eun-Cheol;Ahn, Young-Joon;Kang, Seok-Dong;Ahn, Sung-Yong;Shin, Young-Kyo;Ryu, Jae-Hwa;Schemerhorn, Jerry D.
    • Journal of Information Display
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    • v.1 no.1
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    • pp.32-34
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    • 2000
  • A new PDP cell structure called CSP(Charge Storage Pad) improves the luminous efficiency by 1.6 times and prevents cross talk between adjacent cells. The CSP, which is a conducting material, is inserted between the dielectric layer and the MgO film in the front plate. This CSP produces a longer time-averaged discharge path to get a high luminous efficiency and confines the discharge to prevent cross talk.

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Optimization of H-IPS Structure for High Aperture Ratio.

  • Lee, Do-Young;Kim, Do-Sung;Kang, Byung-Goo;Kim, Eui-Tae;Kim, Bo-Ram;Kim, Jung-Han;Lim, Byung-Ho;Ahn, Byung-Chul
    • 한국정보디스플레이학회:학술대회논문집
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    • 2006.08a
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    • pp.290-293
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    • 2006
  • We designed the H-IPS that has similar aperture ratio to the AS-IPS with organic insulator. To improve the aperture ratio without organic insulator, we positioned the pixel electrode over the preceding gate on the base of the H-IPS structure, and minimized the width of pixel and common electrodes. Without the additional process, we could obtain the similar brightness with that of AS-IPS in 15inch SXGA+ Panel.

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A Study of The Novel External Electrode Fluorescent Lamp For High Optical Efficiency

  • Yoon, Ji-Su;Jung, Kyu-Bong;Kim, Hyung-Dong;Kang, Jae-Kyung;Kim, Jae-Bum;Jeong, Byoung-Koan;Ahn, Byung-Chul;Yeo, Sang-Deog
    • 한국정보디스플레이학회:학술대회논문집
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    • 2006.08a
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    • pp.1412-1414
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    • 2006
  • We study on the Electro Optical Properties of the EEFL (External Electrode Fluorescent Lamp) Backlight system is based on the lamp type characteristics and diameter of the lamp tube under the equal manufacturing of the lamps. In this contribution, through the analysis of the different lamp type and diameter of the lamp tube gain the effective luminance and reduce the lamp voltage from aspect in the electro optical properties with EEFL and LCD backlight system.

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Backlight for Large-area LCD-TVs using Light Emitting Diodes

  • Choi, Jong-Hyun;Chu, Haang-Rhym;Bang, Ju-Young;Park, Hee-Jeong;Hong, Hee-Jung;Lim, Moo-Jong;Oh, Eui-Yeol;Chung, In-Jae
    • 한국정보디스플레이학회:학술대회논문집
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    • 2005.07b
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    • pp.1153-1156
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    • 2005
  • A backlight for large-area LCD (Liquid Crystal Display)-TVs has been developed using Light Emitting Diodes (LEDs). Performances of the backlight and the methods driving the LEDs are introduced in this research. A spectral relationship between the LEDs and the color filters of a panel were investigated as well. In order to realize a CRT like dynamic effect, the area-focused luminance control (AFLC) technology was adopted in developing the backlight. Thus, a possibility of applying the LEDs to the backlight for large-area LCD-TVs was systematically proved.

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Area-Focused Luminance Control Backlight for LCD TV applications

  • Hong, Hee-Jung;Kwon, Kyung-Joon;Choi, Jong-Hyun;Lee, Si-Hoon;Hwang, Hak-Mo;Lim, Moo-Jong;Oh, Eui-Yeol;Chung, In-Jae
    • 한국정보디스플레이학회:학술대회논문집
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    • 2005.07b
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    • pp.1157-1160
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    • 2005
  • In order to improve the image quality of a large size LCD-TV, the Area-Focused Luminance Control (AFLC) technology with data processing algorithm has been developed. The AFLC backlight consists of 16 U-shaped lamps, and controllable areas are divided into 8 blocks. Based on the AFLC technology, the backlight luminance of each block is automatically and separately controllable. Consequently, the contrast ratio is greatly enhanced whereas the corresponding power consumption is decreased as compared with those of conventional backlights.

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Self-heating Induced Linear Kink Effect in Poly-Si TFTs

  • Lee, Seok-Woo;Kang, Ho-Chul;Oh, Kum-Mi;Kim, Eu-Gene;Park, Soo-Jeong;Lim, Kyoung-Moon;Kim, Chang-Dong;Chung, In-Jae
    • 한국정보디스플레이학회:학술대회논문집
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    • 2005.07b
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    • pp.1038-1040
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    • 2005
  • Linear kink effect (LKE) induced mainly by selfheating on the reliability of divided channel poly-Si TFTs has been studied. The LKE was enhanced for compact designed structure to achieve narrow bezel, which was explained by the difference in heat dissipation capability, thus self-heating immunity in TFT.

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Complete Assignment of the $^H1$ and $^{13}C$ NMR Spectra of a Sucrose Ester from Euphorbia Lathyris L.

  • Jung, Min-Hwan;Kim, Hyun-Sik;Sangdoo Ahn;Kim, Cheong-Taek;Jin, Mu-Hyun;Yim, Yong-Hyeon;Kim, Young-Kook;Jong hoa Ok
    • Journal of the Korean Magnetic Resonance Society
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    • v.4 no.2
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    • pp.125-132
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    • 2000
  • The detailed $^1$H and $^{13}$ C NMR assignments of a novel sucrose isovaleryl ester isolated from the seed of Euphorbia Lathyris L., were achieved by one-and two-dimensional techniques. The new sucrose ester was characterized as an $\alpha$-D-glucopyranoside, 3,4,6-tris-O-(3-methyl-1-oxobutyl)-$\beta$-D-fructofuranosyl, 2,6-bis(3-methylbutanoate); sucrose 4,7,8,11,12-pentaisovalerate by MS and NMR experiments.

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New Material for a Super Resolution Disc

  • Kwak, Keum-Cheol;Kim, Sun-Hee;Lee, Chang-Ho;Song, Ki-Chang
    • Transactions of the Society of Information Storage Systems
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    • v.3 no.2
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    • pp.54-58
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    • 2007
  • Using metal/Si materials as a recording layer, we have achieved good results for a SR disc (super resolution disc). Mainly by controlling metal composition and the ratio of metal to Si of recording layer, signal qualities were greatly enhanced. At the mark length of 75nm, the best CNR (Carrier to Noise Ratio) was about 45dB. Write power was reduced down to about 6.5mW. LFN (Low Frequency Noise) could also be reduced down to 14dB. Single tone pattern jitters for every mark whose length is from 2T through 8T were achieved to be below 10%. The readout signal was stable sustaining CNR>40dB during about 15,000 times reading. The so-called "3T-problem" could be avoided.

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Application of the new panel structure for high luminous efficiency in AC-PDPs

  • Kim, Jae-Sung;Jeon, Chung-Huan;Lee, Eun-Cheol;Ahn, Young-Joon;Kang, Seok-Dong;Ahn, Sung-Yong;Shin, Young-Kyo;Ryu, Jae-Hwa
    • 한국정보디스플레이학회:학술대회논문집
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    • 2000.01a
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    • pp.23-24
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    • 2000
  • A new PDP cell structure called CSP (Charge Storage Pad) improves the luminous efficiency by 1.6 times and prevents cross talk between adjacent cells. The CSP, which is a conducting material, is inserted between the dielectric layer and the MgO film in the front plate. This CSP produces a longer time-averaged discharge path to get a high luminous efficiency and confines the discharge to prevent cross talk.

  • PDF