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: 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 liquid crystal display according to an exemplary embodiment of the present invention includes: a substrate; a partition formed on the substrate and defining a pixel; a plurality of protrusion members formed with the same material as the partition on the substrate, and disposed with a linear plane shape inside the pixel defined by the partition; and a color filter filled inside the pixel defined by the partition. Accordingly, in the liquid crystal display according to an exemplary embodiment of the present invention, a plurality of transparent protrusion members are formed in the pixel defined by the partition such that movement of color filter ink dripped through an Inkjet method is controlled such that a color filter may be planarized on the whole surface of the pixel.

Abstract: A display panel includes a substrate, a partition formed on the substrate and defining a plurality of openings, a plurality of color filters formed in the openings and having a substantially uniform thickness within each respective opening, and a spacer formed on the partition. The color filters and the spacer are formed through inkjet printing. The color filters have the substantially uniform thickness by the partition having a height which is greater than the thickness of the color filters during the inkjet printing. The height of the partition may be in a range of about 1.5 to about 2 times the thickness of the color filter.

Abstract: The present invention relates to a display device and a method for manufacturing the display device. The display device includes at least one partition formed on a lower display panel. A color filter may fill a region defined by the partitions. A first upper passivation layer is formed on the color filter, and a second upper passivation layer is formed on the first upper passivation layer and the partitions such that the LCD structure is planarized. In the display device, the height of the partition is sufficiently high to prevent mixing of the colors of neighboring pixel filters, and the process margin of the spacer and the light blocking member may be ensured. The partitions can be formed with multiple layers having different widths such that the mixture of colors between the neighboring pixels may be prevented, and the color reproducibility may be increased.

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 inkjet printing system is provided, which comprises: a stage on which a substrate including at least two alignment keys is mounted; an inkjet head device disposed above the stage; and an alignment key sensing device disposed above the stage, wherein the inkjet head device comprises a head unit including an inkjet head, and a supporting unit which supports the head unit and scanning the substrate in a first direction, and wherein the alignment key sensing device comprises: at least two alignment key sensors for sensing positions of the alignment keys; a sensor supporting unit for supporting the at least two alignment key sensors; and a sensor position adjustment device for adjusting positions of the alignment key sensors with respect to the alignment key sensing device.

Abstract: In one embodiment, a driving method of an inkjet apparatus, includes applying the same driving pulse to a plurality of piezoelectric elements; measuring a discharge speed and a discharge volume of a discharged object which is discharged through a plurality of nozzles; adjusting the discharge speed which comprises comparing the discharge speed and discharge volume of each nozzle with a predetermined reference permissible range to detect nozzle deviations from the reference permissible range, and adjusting the discharge characteristic of the one or more detected nozzles within the reference discharge permissible range.

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: In a color filter substrate and a method for manufacturing the color filter substrate, the color filter substrate includes a base substrate, a first blocking pattern, a second blocking pattern and color filters. The base substrate includes a plurality of pixel areas. The first blocking pattern extends along a direction of the base substrate. The second blocking pattern crosses the first blocking pattern and includes a passage portion through which the base substrate is exposed to connect the pixel areas adjacent to each other along the direction. Color filters are formed in the pixel areas. Accordingly, the uniformity of the color filters and the reliability of the color filter's quality and manufacturing process may be enhanced so that display quality may be enhanced.

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: An inkjet printing apparatus, a method for inspecting color filters, and a method for manufacturing a color filter panel using the same are disclosed. The inkjet printing apparatus includes a stage on which a substrate is mounted, an inkjet head for jetting color filter ink onto the substrate, and a color coordinate measurement unit spaced apart from the inkjet head to measure color coordinates of color filters.

Abstract: A method of manufacturing a color filter substrate includes ejecting color inks into a first sub-array of ink-receiving openings defined in or on a base substrate by using a print head unit including a plurality of ejecting nozzles, rotating relatively one of the base substrate and the print head unit and ejecting color inks into a second sub-array of ink-receiving openings defined in or on the base substrate where the first and second sub-array of ink-receiving openings are interlaced with each other

Abstract: A liquid jetting apparatus capable of preventing an jetted organic liquid layer having a difference in its jetting amount from being recognized as a stain includes a plurality of jetting heads to jet an organic liquid onto a substrate having a plurality of pixels, and a convey unit to shift the different jetting heads to pixels representing the same color among the pixels arranged in a line in at least one of row and column directions.

Abstract: The present invention provides an ink for a color filter comprising a polymer binder, a crosslinking monomer, a solvent, a pigment, and a polymerization initiator. The polymer binder comprises acrylate or methacrylate including a hydroxy group. The polymer binder may comprise 2-hydroxyethyl acrylate or 2-hydroxyethyl methacrylate.

Abstract: An exemplary ink composition includes a polymerizable compound, a polymerization initiator, a binder, a colorant and a solvent including at least one main solvent with a boiling point of about 150° C. or lower. A display panel including the exemplary ink composition and its manufacturing method are also disclosed.

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.