Samsung Electronics Co., Ltd.

Samsung Electro-mechanics Co., Ltd.

Cheil Industries Inc.

Samsung Display Co., Ltd.

Seung-Joo Shin

Seong-jin Kim

Kye-Si Kwon

Keon Kuk

Seog-Soon Baek

Yong-soo Oh

Sang-Il Kim

Chang-seung Lee

Su-ho Shin

Gee-Young Sung

Sung-Woong Kim

Min-Soo Kim

Jong-woo Shin

Yong-Soo Lee

Ki-deok Bae

Il-kwon Moon

Mi-jeong Song

Tae-Woon Cha

Jang-yeon Kwon

In-Jae Lee

Ji-Hyuk Lim

Sung-wook Kim

Mun-cheol Choi

You-seop Lee

Dong-kee Sohn

Hyung-taek Lim

Woo-sik Kim

Jin-Ki Hong

Byung-Hun Kim

Jong-Seung Park

Seok-Soon Back

Seok-soon Baek

Seong-Jin Kim

Yong-Soo Oh

Dong-Kee Sohn

Disclosed is a color filter ink composition that includes an acrylic-based copolymer resin including repeating units represented by a particular chemical formula, a polymerizable monomer, a pigment, and a solvent. According to the present invention, the color filter ink composition can have excellent ejection properties and ejection stability by using a new acrylic-based copolymer resin as a binder resin, and also can have excellent storage stability, so that it can be used for a long period. In addition, a pattern formed using the color filter ink composition can have improved heat resistance, chemical resistance, and film strength.

Ink composition for color filter, method for preparing a color filter using the same, and color filter

An apparatus and method of fabricating a color filter using an ink-jet technique includes inclining an ink-jet head having a plurality of nozzles at a predetermined angle, moving the ink-jet head in a lengthwise direction of the color filter that is divided into a plurality of working regions, ejecting color ink into a plurality of pixels, moving the ink-jet head to the other adjacent working region after a work in a predetermined working region is completed, and ejecting color ink, wherein the ink-jet head is symmetrically arranged with its mirror-image in adjacent working regions and thereby ejecting the color ink.

Apparatus and method of fabricating color filter using ink-jet technique

An Inkjet head according to an exemplary embodiment of the present invention includes an ink storage unit including an inner storage space, a head unit connected to the ink storage unit, and a plurality of nozzles discharging the ink, wherein the floors of the inner storage space of the ink storage unit form a step. Accordingly, in the Inkjet head of an exemplary embodiment of the present invention, the floors of the inner storage space of the ink storage unit form a step, and the ceiling of the inner flow space of the head unit is inclined, thereby preventing the ink vapor from being confined inside the head unit. Therefore, the ink to be discharged through the nozzle flows in a predetermined direction and does not include ink vapor, thereby preventing discharge deterioration.

Ink jet head and ink supplying method thereof

A piezo-electric type page width inkjet printhead includes an intermediate substrate that includes a pressure chamber to be filled with ink to be ejected, a manifold connected to an ink entrance hole to store ink that flows in through the ink entrance hole, a restrictor to connect the manifold to one end of the pressure chamber, and a damper formed through the intermediate substrate corresponding to the other end of the pressure chamber, a lower substrate including a nozzle formed through a portion of the lower substrate, which corresponds to the damper, to eject the ink, an upper substrate formed on the intermediate substrate to seal an upper side of the pressure chamber, and a piezoelectric actuator formed on the upper substrate to generate a driving power to the pressure chamber to eject the ink through the nozzle, wherein the intermediate substrate includes a both-sided copper clad laminate plate including an upper copper film and a lower copper film that are respectively formed on top and bottom surfaces of the laminate plate.

Piezo-electric type page width inkjet printhead and image forming apparatus having the same

A method and apparatus to check an operation of a piezoelectric inkjet head includes a first current detection unit to detect a first current output from a piezoelectric element of the piezoelectric inkjet head when a predetermined voltage is applied, a second current detection unit to detect a second current from a capacitor having a capacitance with the same magnitude as a capacitor component of the piezoelectric element when the voltage is applied to the capacitor, and a third current detection unit to detect a third current corresponding to a difference between the first current and the second current, as the amount of deformation of the piezoelectric element according to the application of the voltage.

Method and apparatus to check piezoelectric inkjet head

An apparatus and method for fabricating a color filter by printing pixels on a substrate using an ink jet head, optically analyzing pixel quality and controlling printing in accordance with the pixel quality. Optically analyzing may include analyzing a number of ink droplets or a transmittance of a printed pixel.

Apparatus and method for fabricating a color filter

A method of manufacturing a color filter forming a black matrix on a substrate, the black matrix defining a plurality of pixels, forming liquid ink layers within the pixels and drying the liquid ink layers, penetrating solvent vapor into surfaces of the dried liquid ink layers to form ink layers have mobile surfaces, and drying the ink layers having the mobile surfaces.

Method of fabricating color filter

A nozzle plate, inkjet printhead with the same and method of manufacturing the same. The nozzle plate includes at least one nozzle and has at least one heater segment disposed adjacent to the nozzle. The heater segment is configured to heat a first fraction of the circumference to a greater degree than a second fraction of the circumference. Heater segments are disposed at intervals around a circumference of the nozzle and are independently operable.

Nozzle plate, inkjet printhead with the same and method of manufacturing the same

A piezoelectric inkjet printhead including a reversible shutter disposed in an ink flow path is disclosed. The inkjet printhead may includes a plurality of ink pressure chambers, a plurality of piezoelectric actuators to provide the plurality of ink pressure chambers with a driving force for ink ejection, an ink manifold to supply the plurality of pressure chambers, a plurality of restrictors disposed in the ink flow path between the manifold and the plurality of pressure chambers, a plurality of ink ejecting nozzles coupled to the plurality of pressure chambers, and a plurality of unidirectional shutters. The shutters may be disposed at respective outlets of the plurality of restrictors and may be adapted to open the restrictor when ink is supplied from the restrictor to the pressure chamber and close the restrictor and restrict or prevent the backflow of ink when ink is ejected from the pressure chamber through the nozzle.

Piezoelectric inkjet printhead having a unidirectional shutter

An image forming apparatus includes an electrostatic latent image forming medium, a charge unit charging the surface of the electrostatic latent image forming medium with a predetermined potential, a toner supply unit (TSU) supplying toner to an electrostatic latent image formed on the surface of the electrostatic latent image forming medium to develop the electrostatic latent image into a toner image, and a transfer unit transferring the toner image to a print medium, the electrostatic latent image forming medium including a transparent frame member, a light source inside the frame member, an optical shutter array including a plurality of optical shutters, and a photoconductive layer on which the electrostatic latent image is formed using light transmitted through the optical shutter array. A diffuser may surround the light source to diffuse light to maintain the intensity of light reaching the optical shutters at a uniform level.

Electrostatic latent image forming medium using optical shutter array and image forming apparatus having the same

An electrostatic latent image forming medium includes a frame, an imaging surface on which an electrostatic latent image is to be formed, the imaging surface being supported by the frame, and an alteration mechanism for altering the electrostatic latent image on the imaging surface, the alteration mechanism being between the frame and the imaging surface. When signals are selectively applied to the alteration mechanism, an electrostatic latent image with a potential different from a potential of its surrounding area is formed on the imaging surface.

Electrostatic latent image forming medium, image forming apparatus including the electrostatic latent image forming medium and method of forming an electrostatic latent image

A monolithic ink-jet printhead, and a method of manufacturing the same, includes a substrate having an ink chamber, an ink channel, and a manifold, a nozzle plate formed on the substrate, a nozzle, a heater, and a conductor. The ink chamber includes sidewalls formed to a predetermined depth from the front surface of the substrate for defining side surfaces of the ink chamber and a bottom wall formed parallel to the front surface of the substrate at the predetermined depth from the front surface of the substrate for defining a bottom surface of the ink chamber. The nozzle plate includes a plurality of passivation layers, a heat dissipating layer being stacked on the passivation layers, and the nozzle for ejecting ink out of the printhead. The heater is positioned above the ink chamber and heats ink in the ink chamber and the conductor delivers a current to the heater.

Method of manufacturing a monolithic ink-jet printhead

An optical shutter includes a cell having a transparent panel and a hydrophobic transparent insulation panel which are arranged to face each other, a transparent electrode formed on an outer surface of the hydrophobic transparent insulation panel, and an opaque droplet contained in the cell and contacting an inner surface of the hydrophobic transparent insulation panel, wherein the amount of light transmitted is adjusted by changing a contact angle of the opaque droplet with respect to the hydrophobic transparent insulation panel. The opaque droplet may be hydrophobic or hydrophilic. The contact angle of the opaque droplet may be changed by applying an electric field between the transparent electrode and the opaque droplet.

Optical shutter and light scanning apparatus employing the same

A thermally-driven ink-jet printhead includes a substrate having an ink chamber to be filled with ink to be ejected, a manifold for supplying ink, and an ink channel for providing flow communication therebetween. First and second sidewalls are formed to a predetermined depth from an upper surface of the substrate and define the ink chamber to have a substantially rectangular shape. A nozzle plate including a plurality of material layers is formed on the substrate. A nozzle passes through the nozzle plate and is in flow communication with the ink chamber. A heater is disposed between the nozzle and one of the first sidewalls above the ink chamber. A conductor is electrically connected to the heater. The conductor and the heater are disposed within the nozzle plate. A shifting feature moves cavitation points beyond an outer edge of the heater.

Thermally-driven ink-jet printhead capable of preventing cavitation damage to a heater

An ink-jet printhead includes a substrate having an ink chamber and a manifold, a nozzle plate formed on the substrate, first and second heaters and conductors, a material layer, and a plurality of ink channels. The nozzle plate includes a plurality of passivation layers formed of an insulating material, a heat dissipation layer formed on the plurality of passivation layers and made of a thermally conductive material, and a nozzle passing through the nozzle plate and in flow communication with the ink chamber. The first and second heaters and conductors are interposed between adjacent passivation layers of the nozzle plate. The material layer is interposed between the ink chamber and the manifold to form a bottom wall of the ink chamber and a top wall of the manifold. The plurality of ink channels is formed in the material layer to provide flow communication between the ink chamber and the manifold.

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Seoul, South Korea

Seung-Joo Shin