Abstract: A light emission having: a first substrate; a second substrate opposite the first substrate; a sealing member between the first and second substrates and forming a vacuum envelope with the first and second substrates. The device also includes an electron emission unit on the first substrate, the electron emission unit having a plurality of pixel regions, each of the plurality of pixel regions having an independently controlled electron emission; a light emission unit on the second substrate, the light emission unit having a phosphor layer and an anode electrode on the phosphor layer; at least one anode button penetrating the second substrate at a region enclosed by the sealing member and spaced apart from the light emission unit; and a conductive layer on the second substrate and electrically coupling the anode button to the anode electrode.

Abstract: A dye-sensitized solar cell using an ion-bound oligomer complex is provided. The dye-sensitized solar cell comprises an electrolyte, comprising a first oligomer having a C5-30 heteroaryl group containing a nitrogen heteroatom as a basic functional group at both ends of the molecule, mixed with a second oligomer having an acidic functional group selected from among carboxylic acid, phosphoric acid, and sulfonic acid, at both ends of the molecule, to thus form a salt, which then leads to an ion-bound oligomer complex that constitutes the electrolyte. The solar cell exhibits excellent mechanical properties, can be manufactured conveniently, and can have a high energy conversion efficiency.

Abstract: A dye-sensitized solar cell using an ion-bound oligomer complex is provided. The dye-sensitized solar cell comprises an electrolyte, comprising a first oligomer having a C5-30 heteroaryl group containing a nitrogen heteroatom as a basic functional group at both ends of the molecule, mixed with a second oligomer having an acidic functional group selected from among carboxylic acid, phosphoric acid, and sulfonic acid, at both ends of the molecule, to thus form a salt, which then leads to an ion-bound oligomer complex that constitutes the electrolyte. The solar cell exhibits excellent mechanical properties, can be manufactured conveniently, and can have a high energy conversion efficiency.

Abstract: A light emission having: a first substrate; a second substrate opposite the first substrate; a sealing member between the first and second substrates and forming a vacuum envelope with the first and second substrates. The device also includes an electron emission unit on the first substrate, the electron emission unit having a plurality of pixel regions, each of the plurality of pixel regions having an independently controlled electron emission; a light emission unit on the second substrate, the light emission unit having a phosphor layer and an anode electrode on the phosphor layer; at least one anode button penetrating the second substrate at a region enclosed by the sealing member and spaced apart from the light emission unit; and a conductive layer on the second substrate and electrically coupling the anode button to the anode electrode.

Abstract: A light emission device and a display device using the light emission device as light source are provided. The light emission device includes a vacuum vessel including a first substrate, a second substrate and a sealing member disposed between the first and second substrates; an electron emission unit on a side of the first substrate facing the second substrate; a light emission unit, including an anode electrode and a phosphor layer, on a side of the second substrate facing the first substrate and spaced apart from the sealing member; and a first resistive layer for absorbing an arc current, wherein the first resistive layer is on the side of the second substrate at an inside region of the vacuum vessel, the inside region being defined by the sealing member.

Abstract: A light emission device and a display device provided with the light emission device. The light emission device includes first and second substrates opposing each other; a side member located between periphery regions of the first and second substrates to define a vacuum chamber with the first and second substrates; an electron emission unit disposed on the first substrate; and a light emission unit disposed on the second substrate and adapted to emit light using electrons emitted from the electron emission unit. The light emission unit includes a phosphor layer and an anode electrode disposed on a surface of the phosphor layer, and the anode electrode is applied with a voltage through an anode terminal penetrating through the side member.

Abstract: An inkjet printer driving a maintenance apparatus using a power to a feed roller. In the inkjet printer, the maintenance of the maintenance apparatus is started by a carriage. The maintenance apparatus includes a maintenance member which cleans and covers the nozzle of a print head, a maintenance cam which controls the maintenance member through a rotating motion, a maintenance gear which is disposed at one end of the maintenance cam and has a cut off portion in which a part of gear teeth is partially cut off in a face width direction, and a connection gear disposed on a shaft of the feed roller to be able to move in a shaft direction by the carriage and transmit the power of the feed roller. During the printing operation of the carriage, the connection gear is placed on the cut off portion, and then engaged with the teeth of the maintenance gear disposed adjacent to the cut off portion by the pushing of the carriage.

Abstract: Disclosed is a method for preparing a biodegradable polymer in the form of uniform powder or spherical particles by dispersion polymerization without a grinding step. The method for preparing a biodegradable polyester includes dispersing a monomer in the presence of a catalyst in a dispersion solvent to form a solid or liquid phase for dispersion polymerization and thereby to yield a biodegradable aliphatic polyester in the form of spherical particles or powder, the monomer comprising a mixture of a first compound (e.g., lactide or glycolide) and a second compound being selected from the group consisting of polyhydric alcohols (e.g., glycerin, erythritol, penterythritol or dipentaerythritol) and carprolactone. The present invention readily prepares a biodegradable polymer having a high molecular weight in the form of uniform powder or spherical particles.

Abstract: An inkjet printer driving a maintenance apparatus using a power to a feed roller. In the inkjet printer, the maintenance of the maintenance apparatus is started by a carriage. The maintenance apparatus includes a maintenance member which cleans and covers the nozzle of a print head, a maintenance cam which controls the maintenance member through a rotating motion, a maintenance gear which is disposed at one end of the maintenance cam and has a cut off portion in which a part of gear teeth is partially cut off in a face width direction, and a connection gear disposed on a shaft of the feed roller to be able to move in a shaft direction by the carriage and transmit the power of the feed roller. During the printing operation of the carriage, the connection gear is placed on the cut off portion, and then engaged with the teeth of the maintenance gear disposed adjacent to the cut off portion by the pushing of the carriage.

Abstract: A high-strength, biodegradable, organic polymer/inorganic particle composite material for bone fixation, which is prepared by mixing and dispersing a biocompatible, inorganic fine or ultrafine particle in an organic monomer and then polymerizing the organic monomer and thus exhibits remarkably improved mechanical strength, and also to a high-strength, biodegradable, organic polymer/inorganic particle composite material prepared thereby is disclosed. More particularly, the a high-strength, biodegradable, organic polymer/inorganic particle composite material for bone fixation is prepared by mixing and dispersing a calcium phosphorus compound or a calcium aluminate compound in a biodegradable organic monomer, at the amount of 0.5 to 60% by weight; and polymerizing the biodegradable organic monomer; and then forming the polymerized material into a desired shape. The synergistic, reinforcing effect of the inorganic fine particle is increased, so that the high-strength material for bone fixation can be prepared.

Abstract: Disclosed is a method for preparing a biodegradable polymer in the form of uniform powder or spherical particles by dispersion polymerization without a grinding step. The method for preparing a biodegradable polyester includes dispersing a monomer in the presence of a catalyst in a dispersion solvent to form a solid or liquid phase for dispersion polymerization and thereby to yield a biodegradable aliphatic polyester in the form of spherical particles or powder, the monomer comprising a mixture of a first compound (e.g., lactide or glycolide) and a second compound being selected from the group consisting of polyhydric alcohols (e.g., glycerin, erythritol, penterythritol or dipentaerythritol) and carprolactone. The present invention readily prepares a biodegradable polymer having a high molecular weight in the form of uniform powder or spherical particles.

Abstract: Disclosed is a photoelectrocatalytic purifier and a method for purifying fluid such as air by using the photoelectrocatalytic purifier. The photoelectrocatalytic purifier according to the present invention is characterized in that it comprises a discharge plate having anode property, a discharge section being positioned parallel to the discharge plate and having cathode property, a photocalyst being coated on a discharge surface of the discharge plate, ultraviolet lamps being disposed on a rear of the discharge section, and a power supply and booster for supplying a voltage.

Abstract: There are disclosed a fibrous zeolite ZSM-5 and a preparation method thereof. The fibrous zeolite ZSM-5 which is represented by xSiO.sub.2 (1-x)Al.sub.2 O.sub.3 (x is 0.9429.about.0.9943) can be directly used as a reinforcement material because of its fibrous form, and has sufficient sites on which other substances can be easily adsorbed and from which the adsorbed substances can be easily desorbed. Also, the fibrous zeolite can be applied to an optical material due to its transparent property.

Abstract: There are disclosed a fibrous zeolite and a preparation method thereof wherein the fibrous zeolite, represented as xTiO.sub.2.(1-x)SiO.sub.2 (x is 0.02.about.0.1), which is easy to adsorb and desorb, and is easy to use as a functional material, and can be directly used as a reinforcement material.