Parameters influencing exo‐electron emission currents from MgO film of ACPDPs

Yoon, Sang‐Hoon; Yang, Heesun; Kim, Yong-Seog

doi:10.1889/jsid18.2.164

Cited by 3 publications

(1 citation statement)

References 25 publications

(36 reference statements)

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“…3 Exoemission decays significantly with time after the last discharge with different time profiles which depend on the MgO impurity and defect levels, 4 and on temperature. 5,6 The level of exoemission also depends on the amount of discharge excitation that might occur from sustaining discharges or from reset discharges. Ideally, the intensity of the reset discharges can be carefully adjusted to excite enough exoemission for reliable high-speed addressing and at the same time generate only low levels of background glow necessary for high dark-room contrast ratios.…”

Section: Introductionmentioning

confidence: 99%

Very‐sensitive direct measurement of plasma‐display exoemission

Weber

Yan²

2011

J Soc Info Display

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Abstract— The exoemission of electrons from the MgO cathode surface has a great impact on many properties of plasma displays and needs to be carefully engineered for successful display products. A method for direct measurement of this exoemission current using an ultra‐high‐impedance amplifier, which detects the integrated exoemission charge collected by a capacitance, is presented. The large discharge and displacement currents initiated by the changing sustain waveform, which could overload and saturate the sensitive amplifier, are shorted by a very low impedance switch in the form of a common reed relay. The exoemission current from the MgO cathode is significantly amplified by avalanches in the gas, and thus methods for directly measuring the avalanche amplification factor so as to correct the measured current and obtain the true exoemission current from the cathode are described. This highly variable avalanche amplification factor is measured and estimated to be as large as 500 when the voltage across the gas is just below breakdown. Methods are covered to correct for the small ion currents that flow in the plasma‐panel soda glass substrates and that add an unwanted error signal. Practical circuit techniques for measuring the very small exoemission currents are presented.

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Section: Introductionmentioning

confidence: 99%

Very‐sensitive direct measurement of plasma‐display exoemission

Weber

Yan²

2011

J Soc Info Display

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P‐94: Long Time‐Discharge Characteristics of MgO Layer with Nano‐Powder in AC Plasma Display Panel

Kim¹,

Park²,

Tae³

et al. 2010

Symp Digest of Tech Papers

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The characteristics of the MgO layer are known to be an important parameter that affects both the stable address discharge and luminance characteristics in an ac-PDP. In this paper, to enhance the long time-discharge characteristics of 42-in. ac-PDP with an ternary gas compositions such as He-Xe(17%)-Ne, the effects of the nano-powder on the MgO layer on the long-time discharge characteristics are examined. As a result, it is observed that the MgO layer with nano-power can enhance the long time-discharge characteristics in an ac-PDP.

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35.4: Temperature Dependence of Exo‐electron Emission for AC PDP

Yoon

Kuang

Kim

2010

Symp Digest of Tech Papers

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In this study, we attempted to understand the temperature dependence of statistical delay of ac-PDPs. Two theoretical models, Auger mechanism of thermal excitation and Tunneling model, were used to predict the temperature and time dependency of exo-electron currents. In the Auger mechanism model, a distributed source of trapped electrons was used. The theoretical prediction from the Auger model showed a significant discrepancy from the experimentally measured results from the panels with MgO nano-cube powder coating. The tunneling model seems to describe the exo-electron currents from MgO nano-cube powders better.

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Parameters influencing exo‐electron emission currents from MgO film of ACPDPs

Cited by 3 publications

References 25 publications

Very‐sensitive direct measurement of plasma‐display exoemission

Very‐sensitive direct measurement of plasma‐display exoemission

P‐94: Long Time‐Discharge Characteristics of MgO Layer with Nano‐Powder in AC Plasma Display Panel

35.4: Temperature Dependence of Exo‐electron Emission for AC PDP

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