Abstract: A color filter substrate comprising a substrate, a light blocking layer on the substrate having a plurality of wells with bottoms that contact the substrate, and a plurality of channels between the wells, and a color layer material which fills the wells and channels.

Abstract: A color filter substrate includes a base substrate, a wall pattern having a lattice structure, a number of pixel regions defined by the wall pattern, a color filter layer formed in the pixel regions, and a dummy element layer. The base substrate includes an active area and an inactive area, and the dummy element layer includes a first dummy element layer in the active area and a second dummy element layer in the inactive area. The first dummy element is formed on a portion of the wall pattern. A manufacturing method of a color filter substrate includes: forming a wall pattern on a base substrate, wherein the wall pattern defines a number of pixel regions; printing at least one ink droplet over the one of the pixel regions; and printing at least one ink droplet on the wall pattern.

Abstract: An inkjet printing system is provided, which includes a first stage mounted with a mother glass including a plurality of substrates and a plurality of alignment keys, a head unit having at least one inkjet head, an alignment key position sensor for sensing positions of the alignment keys to generate a plurality of sensing signals respectively corresponding to the alignment keys, and a transporting unit controller for aligning a position of the head unit based on a current position of the head unit and positions determined by the corresponding sensing signals with respect to the corresponding alignment keys.

Abstract: A roll brushing apparatus for cleaning an inkjet head including a case, a roll brush connected to the case through an axle, and a roll brush cover encompassing a portion of the roll brush. During cleaning the inkjet head, the roll brush is rotated at approximately less than 50 RPM to prevent contaminants from flying off the roll brush. After cleaning the inkjet head, the roll brush cover is moved between the roll brush and the inkjet head to prevent contaminants coming off the roll brush from contaminating the inkjet head. The rotational speed of the brush is also increased to more than 50 RPM to remove contaminants on the roll brush. A solvent may also be sprayed onto the roll brush to aid in contaminant removal after cleaning the inkjet head.

Abstract: An inkjet head cleaning system including a solvent shower to spray a solvent toward a lower surface of the inkjet head for dissolving contaminants of the lower surface, a suction apparatus apart from the solvent shower to suck the dissolved contaminants, and an air blower apart from the suction apparatus to blow air toward the lower surface for drying the solvent. The inkjet head cleaning system and a method using thereof removes contaminants without damage of the under surface of the inkjet head by using solvent. A brush can also be used to remove hardened contaminants remaining on the inkjet head.

Abstract: A liquid droplet spraying apparatus sprays a liquid droplet onto pixel regions arranged in a matrix shape. The liquid droplet spraying apparatus includes a first spraying section and a second spraying section. The first spraying section sprays a first liquid droplet onto a pixel region, the first spraying section moving along a first path. The second spraying section sprays a second liquid droplet onto the pixel region, the second spraying section moving along a second path. A liquid material is dropped multiple times by small amount, such that an accurate amount of the liquid material may be dropped. Advantageously, by dropping the liquid material by both of the first and second spraying sections, a time for dropping the liquid material may be reduced.

Abstract: The present invention relates to an organic electroluminescence display using a metallocene compound, and more particularly to an organic electroluminescence display with a simple structure using a metallocene compound, which has superior photoconductivity, can be used as a p-type semiconductor material, and functions as a superior luminescent material, as a luminescent material.

Abstract: A compound including an epoxy group that has a heat curing property and a chalcone group that has a radiation curing property is represented by the following formula: wherein n is an integer from 1 to 10,000, and each of R1, R2, R3, R4, R5, R6, R7 and R8 is selected from a group consisting of a hydrogen atom, alkyl group, alkoxy group, halogen atom and nitro group. The compound has a high curing efficiency. A photoresist composition including the compound above substantially prevents the formation of remnant in a photoresist pattern used in the manufacturing of a color filter. In addition, the color filter pattern that is formed using the photoresist composition has high color reproductivity and brightness.

Abstract: An ink composition for a color filter includes about 100 parts by weight of a pigment dispersion, about 7 parts by weight to about 65 parts by weight of a thermosetting resin having hydroxyl group at a side chain of the thermosetting resin, about 0.015 part by weight to about 1.5 parts by weight of a thermal initiator, about 0.8 part by weight to about 15 parts by weight of an epoxy-based resin containing fluorine, and about 15 parts by weight to about 165 parts by weight of a solvent. A color filter substrate is manufactured using the ink composition for color filter. The ink composition for the color filter improves straightness of ink jetting through an ink-jetting nozzle and prevents the ink composition from spreading to neighboring pixels.

Abstract: A black matrix composition includes about 40 parts by weight of a pigment dispersion, about 0.1 to about 1.0 part by weight of a photoinitiator, about 5 to about 20 parts by weight of a photo-polymerizable monomer, about 5 to about 20 parts by weight of a binder resin including an acryl-based copolymer containing fluorine and having a hydroxyl group combined with a side chain of the acryl-based copolymer, about 0.1 to about 0.5 part by weight of epoxy-based monomer containing fluorine and about 35 to about 55 parts by weight of a solvent. A black matrix pattern formed of the black matrix minimizes an ink bleed, thereby improving color property of a liquid crystal display device to which the black matrix pattern is applied.

Abstract: An ink composition comprising dipropylene glycol monomethyl ether acetate (DPMA). For example, an ink composition for a color filter includes a binder material, a monomer material, a polymerization initiator, a pigment dispersion, and a solvent including dipropylene glycol monomethyl ether acetate (DPMA).

Abstract: A panel for a display device is provided, which includes a substrate, a sidewall member formed on the substrate and having a plurality of openings, a plurality of color filters formed into the openings and representing a color by incident light, and at least one inspection pattern inspecting a misalignment of the color filters.

Abstract: A compound including an epoxy group that has a heat curing property and a chalcone group that has a radiation curing property is represented by the following formula: wherein n is an integer from 1 to 10,000, and each of R1, R2, R3, R4, R5, R6, R7 and R8 is selected from a group consisting of a hydrogen atom, alkyl group, alkoxy group, halogen atom and nitro group. The compound has a high curing efficiency. A photoresist composition including the compound above substantially prevents the formation of remnant in a photoresist pattern used in the manufacturing of a color filter. In addition, the color filter pattern that is formed using the photoresist composition has high color reproductivity and brightness.

Abstract: The present invention relates to an organic electroluminescence display using a metallocene compound, and more particularly to an organic electroluminescence display with a simple structure using a metallocene compound, which has superior photoconductivity, can be used as a p-type semiconductor material, and functions as a superior luminescent material, as a luminescent material.

Abstract: The present invention is a two-component catalyst system comprising (a) an alkyl magnesium (MgR2) component and (b) a Lewis acid component. The catalyst system is used for catalyzing the oligomerization and polymerization of ethylene and/or &agr;-olefins to form homopolymers and copolymers. The products range from highly linear, high molecular weight, solid polymers to highly branched, lower molecular weight oils.

Abstract: Oily hyperbranched polymers derived from ethylene, propylene, butene and/or a C5-C24 &agr;-olefin, and a method for their synthesis, are disclosed. The polymers have non-regular microstructures and are characterized by a ratio ()of methyl hydrogens centered around 0.85 ppm on the 1H-NMR spectra of the polymers relative to total aliphatic hydrogens of from about 0.40 to about 0.65 for polymers derived from ethylene or butene, and a ratio ()of from greater than 0.50 to about 0.65 for polymers derived from propylene. A method for grafting hyperbranched polymers derived from ethylene, propylene, butene and/or a C5-C24 &agr;-olefin onto aromatic rings in organic molecules and polymers, and the resulting grafted materials, are also disclosed. The hyperbranched polymers and grafted materials are useful, for example, as lubricants and lubricant additives.

Abstract: The synthesis of an aramid by the catalyzed reaction of carbon monoxide, an aromatic dichloride, such as 1,4-dichlorobenzene, and a diamine, such as 1,4-diaminobenzene, is disclosed. The reaction may be catalyzed by palladium (II) and palladium (0)-containing catalysts with chelating trialkyl phosphines, such as bis(diisopropylphosphino)-propane.