Abstract: The plasma display panel includes a first substrate and a second substrate that are disposed substantially in parallel with each other with a predetermined distance therebetween; a plurality of address electrodes disposed on the first substrate; a first dielectric layer disposed covering the address electrodes; a plurality of barrier ribs having a predetermined height from the first dielectric layer to provide a discharge cell; a phosphor layer disposed in the discharge cell; a plurality of display electrodes disposed on one side of the second substrate facing the first substrate in a direction crossing the address electrodes; a second dielectric layer disposed covering the discharge sustain electrodes; and a protective layer disposed to cover the second dielectric layer. The protective layer includes a first area having a predetermined thickness and a second area that is disposed corresponding to a display electrode area and is thicker than the first area.

Abstract: A branched multiblock polybenzimidazole-benzamide copolymer, specifically, one consisting of a repeating unit represented by Formula 1, and a method for preparing the same; an electrolyte membrane using the branched multiblock copolymer, a consistent electrolyte paste/gel and a method for preparing the same; a membrane-electrode assembly (MEA) using the electrolyte membrane and the consistent electrolyte paste/gel and a method for preparing the same; and a fuel cell prepared from the membrane-electrode assembly. The electrolyte membrane according to the present invention has high hydrogen ion conductivity over a wide temperature range, and excellent physical properties such as mechanical properties, chemical resistance and thermal stability. Deterioration of the membrane properties is effectively controlled by phosphoric acid doping and high hydrogen ion conductivity is realized even with a low phosphoric acid doping level.

Abstract: A plasma display panel (PDP) is provided. The PDP includes first and second substrates positioned generally parallel to each other and separated from each other by a space. A plurality of address electrodes are disposed on the first substrate and a first dielectric layer covers the address electrodes. A plurality of barrier ribs extend from the first dielectric layer and partition the space between the first and second substrates into discharge spaces. A phosphor layer is disposed in the discharge spaces. A plurality of display electrodes are disposed on the second substrate generally perpendicular to the address electrodes. A second dielectric layer is disposed over the display electrodes and a protective layer covers the second dielectric layer. The protective layer includes MgO and Zr and may further include Sn.

Abstract: Provided are a plasma display panel (PDP) and a driving method thereof. The PDP includes a first substrate and a second substrate disposed in parallel and spaced apart from one another. Address electrodes are provided on the first substrate with a first dielectric layer over the address electrodes and the first substrate. Barrier ribs are provided on the dielectric forming a plurality of discharge spaces in which phosphor layers are provided. Sustain electrodes are formed on the second substrate facing the first substrate and are arranged crossing the address electrodes. A second dielectric layer is formed over the address electrodes and on the second substrate, and a protective layer including MgO of at least 99.6% purity by weight is formed over the second dielectric layer by a sintering process.

Abstract: A plasma display panel (PDP) is disclosed. In one embodiment, the PDP includes i) first and second substrates spaced apart from each other, wherein an image is configured to be displayed via the second substrate, ii) a plurality of discharge cells formed between the first and second substrates and iii) a protective layer formed between the plurality of discharge cells and the second substrate. In one embodiment, the protective layer is formed form MgO and dopant, wherein the concentration of the dopant gradually increases in the thickness direction.

Abstract: The present invention relates to a novel polybenzimidazole-benzamide copolymer composed of the repeating units represented by formula 1 which is applicable to the electrolyte membrane of fuel cell and a preparation method of the same. The present invention also relates to an electrolyte membrane produced from the above copolymer of the invention and a preparation method thereof. The present invention further relates to a membrane-electrode unit for fuel cell containing the electrolyte membrane of the invention and a fuel cell system including the unit. The electrolyte membrane prepared by the polybenzimidazole-benzamide copolymer of the invention has improved proton conductivity, compared with the conventional polybenzimidazole polymer membrane, and has thermal and chemical stability in addition to the operating capacity in a wide temperature range. Wherein, x is 0.1˜99.9.