• 한국정보디스플레이학회:학술대회논문집
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• 2000.01a
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• pp.115-116
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• 2000

Influence of sustain pulse-width on electro-luminous efficiency is experimentally investigated for surface discharge of AC-PDP. It is found that the firing voltage is decreased as the pulse-width is increased from $2\;{\mu}s$ to $8\;{\mu}s$ with sweeping frequency range of 10 kHz to 50 kHz. It has been found that the optimal sustain pulse-width is in the range of $3{\sim}4\;{\mu}s$ under driving frequency range of 30 kHz and 50 kHz, based on observations of memory coefficient, wall charge, and wall voltage as well as luminous efficiency.

• Proceedings of the KIEE Conference
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• 2006.07c
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• pp.1544-1545
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• 2006

In this paper, we present a new reset waveform for a large-sustain-gap structure in at PDPs. In the driving of the large-sustain-gap structure with a conventional ramp reset waveform, we cannot avoid the condition of an address being a cathode, which causes lots of trouble in stabilizing a reset discharge. To solve these problems, we use the square pulse instead of the conventional rising ramp pulse. Before making a strong discharge between the address (cathode) and scan (anode) electrodes, we make a priming discharge between the address (anode) and the scan (cathode) electrodes to stabilize the strong discharge in which the address electrodes are the cathode. With this scheme, we obtained 60V minimum address voltage and 145V maximum address voltage in $250{\mu}m$ and $350{\mu}m$ gap structures.

• 한국정보디스플레이학회:학술대회논문집
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• 2003.07a
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• pp.756-759
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• 2003

We measure the spatiotemporal wall charge distributions on sustain and address electrodes during reset period in an ac PDP cell using the longitudinal electro-optic amplitude modulation method. We apply several reset waveforms like as ramp, exponentially growing and high voltage pulse, and compare the wall charge characteristics on address electrode as well as sustain electrodes for each reset waveforms.

• 한국정보디스플레이학회:학술대회논문집
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• 2007.08a
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• pp.115-118
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• 2007

Luminous efficacy of 6.0 lm/W has been realized by introducing a spatial positive column discharge together with delayed D pulses, shared sustain pulse voltage, and low sustain frequency drive. Also a high speed addressing of $0.25{\mu}s$ was achieved. The luminance was $157cd/m^2$, which is high enough for a 260-in. FHD display.

• Journal of Power Electronics
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• v.7 no.4
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• pp.278-285
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• 2007

Recently, plasma display panels (PDP) have become the most promising candidate in the market for large screen size flat panel displays. PDPs have many merits such as a fast display response time and wide viewing angle. However, there are still concerns about high cost because they require complex driving circuits composed of high power switching devices to generate various voltage waveforms for three operational modes of reset, scan, and sustain. Conventional PDP driving circuits use path switches for voltage separation and a scan switch to offer a scan voltage for reset and scan operations, respectively. In addition, there exist reset switches to initialize PDPs by regulating the wall charge conditions with ramp shaped pulses, which means the necessity of specific power devices for the reset operation. Because power for the plasma discharge accompanied by a large current is transferred to a panel via path switches, high power rating switches are used for path switches. Therefore, this paper proposes a novel low-cost PDP driving scheme achieved by not only eliminating path switches but also merging the function of reset switches into other switches used for sustain or scan operations. The simulated voltage waveforms of the proposed topology and experimental results implemented in a 42-inch panel to demonstrate the validity of using a new gate driver that merges the functions of power switches are presented.

• 한국정보디스플레이학회:학술대회논문집
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• 2004.08a
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• pp.51-54
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• 2004

We have developed a new PDP cell structure called MARI(${\underline{M}}ulti$ ${\underline{A}}node$ for ${\underline{R}}eduction$ of ${\underline{I}}onic$ effect) and new driving scheme achieving a high luminous efficacy. The MARI PDP has middle electrode inserted between X and Y main electrodes. In the MARI PDP, reset and scan voltage is applied to middle electrode and sustain voltage is applied to X and Y electrode. Using a long gap sustain discharge we accomplished a high luminous efficacy. And we developed 42”full panel adopting MARI structure and new driving scheme and attained luminous efficacy of 2.35lm/W.

• Proceedings of the KIEE Conference
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• 2006.04b
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• pp.232-234
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• 2006

We proposed a new sustaining driver for AC PDPs with reduced sustain voltage by half, which cope with the demerits of the conventional TERES circuit. In the proposed circuit, the number of active switching elements are smaller than the TERES circuit by two and the energy recovery circuit is added. In this paper, the proposed circuit is implemented with control circuits and its validity is verified by the experimentation.

• 한국정보디스플레이학회:학술대회논문집
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• 2006.08a
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• pp.246-249
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• 2006

We have developed a new driving method named TROPHY(Talented Role-playing Technology with Dual Polarity sustainer in Hybrid Mono board). In this method, the sustain voltage is halved compared to the conventional method and the number of power sources is reduced by voltage level unification during the reset, address and sustain period. The hybrid mono board was especially developed to implement those technologies. Therefore, we can lower the cost with the TROPHY compared to the conventional one. It is suitable technology to improve the reliability of circuit and image sticking problem. We can also reduce the number of driving boards and the EMI problem comparing to those of the conventional method.

• Proceedings of the KIPE Conference
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• 2005.07a
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• pp.93-95
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• 2005

A new energy-recovery- sustain circuit suitable for a Plasma Display Panel(PDP) application is proposed. The proposed circuit features the low device voltage stresses, essential to design a power efficient and low cost PDP driver circuit. The proposed circuit is demonstrated experimentally for driving a 42 inches plasma display panel.

• 한국정보디스플레이학회:학술대회논문집
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• 2009.10a
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• pp.711-712
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• 2009

The fabrication of micro-scale irregular holes by using PMMA (Poly Methyl Methacrylate) beads in the front dielectric layer was proposed to improve luminous efficacy of an ac plasma display panel. Through the firing process of front dielectric layer, bowl shaped holes with a depth of $2.5{\mu}m$, a top diameter of $8-12{\mu}m$, and a bottom diameter of $4-7{\mu}m$ were fabricated. The proposed ac plasma display panel with the irregular micro-scale holes improved the luminous efficacy by 18 % due to the decrease in the minimum sustain voltage.