Patents by Inventor Seung-joo Shin
Seung-joo Shin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8596738Abstract: There is provided a monitoring apparatus for an inkjet head including a resistance element connected between a driving circuit generating a driving signal and a piezoelectric element applying pressure to an ink chamber according to the driving signal, an amplifier unit amplifying a differential voltage between an output voltage from the driving circuit and a voltage generated in the piezoelectric element, and a detecting unit detecting whether ink is being normally ejected, based on the amplified differential voltage from the amplifier unit.Type: GrantFiled: December 10, 2010Date of Patent: December 3, 2013Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Byung Hun Kim, Seung Joo Shin
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Patent number: 8513332Abstract: 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.Type: GrantFiled: April 16, 2010Date of Patent: August 20, 2013Assignee: Cheil Industries Inc.Inventors: Jong-Seung Park, In-Jae Lee, Jin-Ki Hong, Seung-Joo Shin, Sung-Woong Kim, Tae-Woon Cha
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Publication number: 20130088545Abstract: There is provided an inkjet print head assembly. The inkjet print head assembly includes an inkjet print head, and a first coating layer formed on the inkjet print head, and absorbing and radiating heat generated in the inkjet print head.Type: ApplicationFiled: September 13, 2012Publication date: April 11, 2013Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Jae Chan PARK, Seung Mo Lim, Ho Joon Park, Seung Joo Shin
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Patent number: 8156893Abstract: 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.Type: GrantFiled: July 19, 2007Date of Patent: April 17, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Sang-il Kim, Seung-joo Shin, Sung-woong Kim
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Patent number: 8152285Abstract: 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.Type: GrantFiled: July 2, 2009Date of Patent: April 10, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Sung-Wook Kim, Seung-Joo Shin, Seok-Soon Back
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Publication number: 20110193903Abstract: There is provided a monitoring apparatus for an inkjet head including a resistance element connected between a driving circuit generating a driving signal and a piezoelectric element applying pressure to an ink chamber according to the driving signal, an amplifier unit amplifying a differential voltage between an output voltage from the driving circuit and a voltage generated in the piezoelectric element, and a detecting unit detecting whether ink is being normally ejected, based on the amplified differential voltage from the amplifier unit.Type: ApplicationFiled: December 10, 2010Publication date: August 11, 2011Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Byung Hun Kim, Seung Joo Shin
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Inkjet print head, inkjet print head assembly and method of manufacturing inkjet print head assembly
Publication number: 20110148995Abstract: There is provided an inkjet print head including: a head plate having nozzles arranged in a length direction, in which each of the nozzles ejects ink therethrough from a side surface of the head plate; an ink inlet provided in the lower portion of the head plate and drawing ink therethrough; a pressure chamber storing the ink drawn in through the ink inlet and communicating with the nozzle; and a piezoelectric element supplying the pressure chamber with driving force in a direction perpendicular to a direction of the ink ejected through the nozzle communicating with the pressure chamber and disposed on the pressure chamber having a membrane interposed therebetween.Type: ApplicationFiled: September 1, 2010Publication date: June 23, 2011Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Hwa Sun Lee, Seung Joo Shin, Seung Mo Lim, Jae Chang Lee, Tae Kyung Lee -
Patent number: 7874650Abstract: 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 surfacesType: GrantFiled: July 19, 2007Date of Patent: January 25, 2011Assignee: Samsung Electro-Mechanics Co., LtdInventors: Seok-soon Baek, Seung-joo Shin, Seong-jin Kim
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Patent number: 7866781Abstract: 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.Type: GrantFiled: July 10, 2007Date of Patent: January 11, 2011Assignee: Samsung Electro-Mechanics Co., LtdInventors: Woo-sik Kim, Kye-si Kwon, Seong-jin Kim, Seung-joo Shin, Byung-Hun Kim, Sang-il Kim
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Patent number: 7775179Abstract: 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.Type: GrantFiled: January 20, 2006Date of Patent: August 17, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Min-soo Kim, Seung-joo Shin, Seong-jin Kim, Seog-soon Baek, Yong-soo Lee, Keon Kuk
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Inkjet head assembly and printing apparatus with ultraviolet emitting unit and method using the same
Patent number: 7771021Abstract: An inkjet head assembly and a printing method using the same. The inkjet head assembly includes an ultraviolet (UV) emitting unit to emit UV light, and a printhead to move together with the UV emitting unit and to eject ink through nozzles using inkjet technology.Type: GrantFiled: June 22, 2007Date of Patent: August 10, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Woo-sik Kim, Seong-jin Kim, Seung-joo Shin, Sung-wook Kim -
Publication number: 20100195232Abstract: 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.Type: ApplicationFiled: April 16, 2010Publication date: August 5, 2010Applicant: CHEIL INDUSTRIES INC.Inventors: Jong-Seung PARK, In-Jae LEE, Jin-Ki HONG, Seung-Joo SHIN, Sung-Woong KIM, Tae-Woon CHA
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Publication number: 20100182359Abstract: 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.Type: ApplicationFiled: July 2, 2009Publication date: July 22, 2010Inventors: Sung-Wook Kim, Seung-Joo Shin, Seok-Soon Back
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Patent number: 7704649Abstract: 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.Type: GrantFiled: June 15, 2006Date of Patent: April 27, 2010Assignee: Samsung Electronics Co., LtdInventors: Sung-woong Kim, Seung-joo Shin, Seong-jin Kim, Kye-si Kwon, Sang-il Kim
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Patent number: 7695105Abstract: 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.Type: GrantFiled: October 28, 2005Date of Patent: April 13, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Gee-young Sung, Kye-si Kwon, Seong-jin Kim, Keon Kuk, Seung-joo Shin, Seog-soon Baek
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Patent number: 7549737Abstract: 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.Type: GrantFiled: September 30, 2005Date of Patent: June 23, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Kye-si Kwon, Seong-jin Kim, Seung-joo Shin, Gee-young Sung, Keon Kuk, Mi-jeong Song
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Patent number: 7484833Abstract: In a droplet ejector and an ink-jet printhead using the same, the droplet ejector includes a fluid path through which a fluid moves, a nozzle being formed on one end of the fluid path, a volumetric structure formed in the fluid path, the volumetric structure being sensitive to an external stimulus and being capable of varying in size to eject a droplet of the fluid through the nozzle, and a stimulus generator, which applies a stimulus to the volumetric structure to vary a size of the volumetric structure.Type: GrantFiled: January 21, 2004Date of Patent: February 3, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Min-soo Kim, Suk-han Lee, Yong-soo Oh, Keon Kuk, Seung-joo Shin
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Publication number: 20080204516Abstract: An inkjet head assembly and a printing method using the same. The inkjet head assembly includes an ultraviolet (UV) emitting unit to emit UV light, and a printhead to move together with the UV emitting unit and to eject ink through nozzles using inkjet technology.Type: ApplicationFiled: June 22, 2007Publication date: August 28, 2008Applicant: Samsung Electronics Co., Ltd.Inventors: Woo-sik KIM, Seong-jin Kim, Seung-joo Shin, Sung-wook Kim
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Patent number: 7417653Abstract: 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.Type: GrantFiled: October 18, 2005Date of Patent: August 26, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Gee-young Sung, Seong-jin Kim, Seung-joo Shin, Kye-si Kwon
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Patent number: 7404624Abstract: An ink-jet printhead using a laser to expel ink includes an ink chamber to be filled with ink and an ink channel to supply the ink chamber with ink, the ink chamber and the ink channel formed in a passageway plate, a cover plate provided on the passageway plate, an ink ejection hole formed through the cover plate at a position corresponding to the ink chamber, a condenser lens provided on a bottom surface of the passageway plate at a position corresponding to the ink chamber, the laser irradiating a laser beam through the condenser lens and directly onto the ink contained in the ink chamber, to generate pressurized waves that vibrate a surface of the ink which causes an ink droplet to be expelled through the ink ejection hole from the surface of the ink.Type: GrantFiled: January 15, 2004Date of Patent: July 29, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Dong-kee Sohn, Keon Kuk, Seung-joo Shin, Yong-soo Oh