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Plasma Display Panel (plasma + display_panel)
Selected AbstractsMicrotransfer Molding of Gelcasting Suspensions to Fabricate Barrier Ribs for Plasma Display PanelJOURNAL OF THE AMERICAN CERAMIC SOCIETY, Issue 11 2003Jooho Moon We have developed a new fabrication technique for the barrier ribs of a plasma display panel (PDP). The rib structure was formed on a glass plate by microtransfer molding a gelcasting suspension with a flexible soft mold. A well,dispersed gelcasting suspension of the glass frit was placed on the photolithographically patterned mold, followed by gelation and drying while pressed with a top glass plate. The rib structure replicated by micromolding was significantly influenced by the gelation kinetics, the green strength of the gelled body, and the mold release process. It was demonstrated that the box,type array of 1176 wells in the patterned area of 6.5 cm × 6.5 cm could be produced using the current method. [source] Petri nets based FPGA controller of PDP sustainer with half-voltage energy recovery circuit,ASIAN JOURNAL OF CONTROL, Issue 3 2010Jian-Long Kuo Abstract This paper proposes a FPGA controller design of a driver circuit based Petri nets for the Plasma Display Panel (PDP). In such a driver circuit, complicated control logic is required in the PDP sustainer circuit to implement the sustaining voltage waveform. The control logic has the zero-switching behaviour for the driver circuit to provide better efficiency for the driving circuit. Conventionally, the VHDL programmer does not have a systematic way to program the control logic. Time delay problem of logic components in logic controller may occur under high frequency operation. With the help of the proposed Petri nets approach, the VHDL programming for the PDP driver circuit can be easier in a systematic way. Also, this paper illustrates three types of sustainers with Petri nets based FPGA controller. The basic full-bridge and full-voltage sustainers are used to compare the performance with the proposed half-voltage sustainer. Details of the circuit operation are described. From the experimental results, the performance such as efficiency, luminance, and gamma curve are assessed to show the effectiveness of the proposed half-voltage sustainer. It is believed that the proposed Petri nets based control circuit is very powerful for the practical application of the PDP sustainer circuit. Copyright © 2010 John Wiley and Sons Asia Pte Ltd and Chinese Automatic Control Society [source] Optical Properties of Co3O4 -Doped ZnO,B2O3,SiO2,Al2O3 Glass System for a Transparent Dielectric LayerJOURNAL OF THE AMERICAN CERAMIC SOCIETY, Issue 12 2009Byung-Hwa Seo There has been a need to improve color temperature without using asymmetric cell structures using transparent dielectric layers with variation of Co3O4 contents in plasma display panel (PDP). In this study, ZnO,B2O3,SiO2,Al2O3 glasses with variations of the Co3O4 content (0, 0.5, 1.0, 1.5, and 2.0 wt%) were fabricated and the optical properties of these glasses were characterized. As the content of Co3O4 increased, the transmittance of the red region (from 580 to 780 nm) decreased more than of the blue region (from 380 to 500 nm). This change of transmittance induced the transition of the coordination of the color temperature toward the blue region. Therefore, the addition of 2 wt% Co3O4 can improve the color temperature from 6087 to 7378 K and the result was confirmed using simulation. [source] Microtransfer Molding of Gelcasting Suspensions to Fabricate Barrier Ribs for Plasma Display PanelJOURNAL OF THE AMERICAN CERAMIC SOCIETY, Issue 11 2003Jooho Moon We have developed a new fabrication technique for the barrier ribs of a plasma display panel (PDP). The rib structure was formed on a glass plate by microtransfer molding a gelcasting suspension with a flexible soft mold. A well,dispersed gelcasting suspension of the glass frit was placed on the photolithographically patterned mold, followed by gelation and drying while pressed with a top glass plate. The rib structure replicated by micromolding was significantly influenced by the gelation kinetics, the green strength of the gelled body, and the mold release process. It was demonstrated that the box,type array of 1176 wells in the patterned area of 6.5 cm × 6.5 cm could be produced using the current method. [source] Simultaneous Optimization of Luminance and Color Chromaticity of Phosphors Using a Nondominated Sorting Genetic AlgorithmADVANCED FUNCTIONAL MATERIALS, Issue 11 2010Asish Kumar Sharma Abstract Acquiring materials that simultaneously meet two or more conflicting requirements is very difficult. For instance, a situation wherein the color chromaticity and photoluminescence (PL) intensity of phosphors conflict with one another is a frequent problem. Therefore, identification of a good phosphor that simultaneously exhibits both desirable PL intensity and color chromaticity is a challenge. A high-throughput synthesis and characterization strategy that was reinforced by a nondominated sorting genetic algorithm (NSGA)-based optimization process was employed to simultaneously optimize both the PL intensity and color chromaticity of a MgO,ZnO,SrO,CaO,BaO,Al2O3,Ga2O3,MnO system. NSGA operations, such as Pareto sorting and niche sharing, and the ensuing high-throughput synthesis and characterization resulted in identification of promising green phosphors, i.e., Mn2+ -doped AB2O4 (A,=,alkali earth, B,=,Al and Ga) spinel solid solutions, for use in either plasma display panels or cold cathode fluorescent lamps. [source] | ||||||||||