Patents by Inventor Vu Dat Nguyen
Vu Dat Nguyen 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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Publication number: 20170173945Abstract: An ink jetting apparatus and method capable of jetting fine liquid drops is disclosed, according to one aspect of an embodiment, the ink jetting apparatus including a chamber for accommodating ink and a jetting unit for jetting ink, the ink jetting apparatus including a pressurizing unit configured to form a meniscus at a tip of the jetting unit by pressurizing the ink contained in the chamber; and a vibrating unit configured to excite and decompose the meniscus formed at the tip of the jetting unit by vibrating the jetting unit.Type: ApplicationFiled: December 7, 2016Publication date: June 22, 2017Inventors: Do Young Byun, Vu Dat Nguyen
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Patent number: 9487003Abstract: Provided herein is a contact patterning apparatus comprising: a substrate; a fluid supply unit configured to supply fluid towards the substrate; a voltage applying unit electrically connected to the fluid supply unit, and configured to make the fluid from the fluid supply unit connected between the substrate and the fluid supply unit by applying a voltage to a surface of the fluid; and a control unit configured to adjust a level of the voltage being applied to the fluid such that the fluid is patterned on the substrate in a dots form or a continuous line form, thereby stably patterning a continuous line of a fine line width regardless of the viscosity of the fluid being used and the patterning velocity.Type: GrantFiled: August 6, 2014Date of Patent: November 8, 2016Assignee: ENJET CO., LTD.Inventors: Vu Dat Nguyen, Do-Young Byun, Yong Hee Jang
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Publication number: 20160185112Abstract: Provided herein is a contact patterning apparatus comprising: a substrate; a fluid supply unit configured to supply fluid towards the substrate; a voltage applying unit electrically connected to the fluid supply unit, and configured to make the fluid from the fluid supply unit connected between the substrate and the fluid supply unit by applying a voltage to a surface of the fluid; and a control unit configured to adjust a level of the voltage being applied to the fluid such that the fluid is patterned on the substrate in a dots form or a continuous line form, thereby stably patterning a continuous line of a fine line width regardless of the viscosity of the fluid being used and the patterning velocity.Type: ApplicationFiled: August 6, 2014Publication date: June 30, 2016Inventors: Vu Dat Nguyen, Do-Young Byun, Yong Hee Jang
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Patent number: 9162449Abstract: There is disclosed an apparatus for spraying and patterning, using an electrostatic force, includes a nozzle to which a voltage is applied to exhaust ink, a droplet circulation chamber provided in one end of the nozzle, with a hole provided in one end to spray the ink exhausted from the nozzle based on a particle size of the droplet and to temporarily collect the not-sprayed ink, and a substrate for impacting the ink sprayed from the hole thereon by forming an electric field between the nozzle and the substrate.Type: GrantFiled: August 26, 2014Date of Patent: October 20, 2015Assignee: Enjet Co., Ltd.Inventors: Do-Young Byun, Vu Dat Nguyen, Baek Hoon Seong
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Patent number: 9028026Abstract: Provided herein is an apparatus for printing on a 3-dimensional surface using electrohydrodynamic force, the apparatus having a stage where a print object is placed; a shape obtainer storing surface information of the print object; a nozzle receiving ink and discharging the received ink to a surface side of the print object; a power supply supplying power to the nozzle; and a controller receiving the surface information of the print object from the shape obtainer and controlling a movement of the nozzle or the stage. Thus, an apparatus for printing on a 3-dimensional surface using electrohydrodynamic force is provided, which is capable of performing a precision printing process on a 3-dimensional surface.Type: GrantFiled: May 20, 2013Date of Patent: May 12, 2015Assignee: Enjet Co. Ltd.Inventors: Do-Young Byun, Vu Dat Nguyen
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Publication number: 20150075425Abstract: Provided herein is a coating system using a spray nozzle, the coating system comprising: a support where a substrate is disposed; a spray nozzle configured to inject towards the substrate liquid that has gone through a primary atomization by collision with gas; a voltage applier configured to apply voltage to the spray nozzle so that the liquid injected from the spray nozzle includes electric charge, and to generate an electric field between the support and the spray nozzle by the voltage applied to the spray nozzle and perform a secondary atomization of the liquid injected from the spray nozzle; and a transferrer configured to transfer at least one of the support and the spray nozzle.Type: ApplicationFiled: March 27, 2014Publication date: March 19, 2015Applicant: Enjet Co., Ltd.Inventors: Do-Young Byun, Vu Dat Nguyen, Baek Hoon Seong
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Publication number: 20150062250Abstract: There is disclosed an apparatus for spraying and patterning, using an electrostatic force, includes a nozzle to which a voltage is applied to exhaust ink, a droplet circulation chamber provided in one end of the nozzle, with a hole provided in one end to spray the ink exhausted from the nozzle based on a particle size of the droplet and to temporarily collect the not-sprayed ink, and a substrate for impacting the ink sprayed from the hole thereon by forming an electric field between the nozzle and the substrate.Type: ApplicationFiled: August 26, 2014Publication date: March 5, 2015Inventors: Do-Young Byun, Vu Dat Nguyen, Baek Hoon Seong
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Publication number: 20140291424Abstract: Provided herein is a spray nozzle and a coating system using the same, the spray nozzle and the coating system comprising a liquid nozzle injecting liquid towards a substrate; a gas nozzle for injecting gas to collide with the liquid on an injection path of the liquid to perform a primary atomization of the liquid; and a voltage supply connected to the liquid nozzle, the voltage supply for applying voltage to the liquid nozzle to generate an electric field between the liquid nozzle and substrate to perform a secondary atomization of the liquid.Type: ApplicationFiled: March 27, 2014Publication date: October 2, 2014Applicant: Enjet Co. Ltd.Inventors: Do-Young Byun, Vu Dat Nguyen, Baek Hoon Seong
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Publication number: 20140160207Abstract: Provided herein is an apparatus for jetting ink where the upper side of a nozzle is open and a physical actuator is provided, and a physical actuator is driven by an electrode provided on the upper and lower side to form an electric field, thereby becoming capable of easily jetting fine-diameter ink.Type: ApplicationFiled: November 7, 2013Publication date: June 12, 2014Applicant: Injet Co., Ltd.Inventors: Do-Young Byun, Vu Dat Nguyen
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Publication number: 20130307892Abstract: Provided herein is an apparatus for printing on a 3-dimensional surface using electrohydrodynamic force, the apparatus having a stage where a print object is placed; a shape obtainer storing surface information of the print object; a nozzle receiving ink and discharging the received ink to a surface side of the print object; a power supply supplying power to the nozzle; and a controller receiving the surface information of the print object from the shape obtainer and controlling a movement of the nozzle or the stage. Accordingly, according to the present disclosure, there is provided an apparatus for printing on a 3-dimensional surface using electrohydrodynamic force which is capable of performing a precision printing process on a 3-dimensional surface.Type: ApplicationFiled: May 20, 2013Publication date: November 21, 2013Applicant: ENJET CO., LTD.Inventors: Do-Young BYUN, Vu Dat NGUYEN
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Patent number: 8419149Abstract: The liquid droplet spraying apparatus of the present invention includes a nozzle body which comprises a chamber for containing a predetermined amount of fluid supplied from an exterior, and a nozzle communicating with the chamber and spraying a liquid droplet of the fluid contained in the chamber to one side of the material to be printed; an electrode module unit which is arranged to be attached to or spaced apart from an outside of the nozzle body; an alternating current signaler which applies an alternating current signal to the electrode module unit; and a signal control unit which controls intensity and frequency of an output signal from the alternating current signaler.Type: GrantFiled: August 12, 2011Date of Patent: April 16, 2013Assignee: Enjet Co., Ltd.Inventors: Do Young Byun, Vu Dat Nguyen
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Patent number: 8388108Abstract: The liquid droplet spraying apparatus includes a chamber containing a fluid; a nozzle body having a nozzle for spraying the fluid in the chamber to one side of a material to be printed; an electrostatic spray module which is arranged in the vicinity of the chamber or the nozzle, and which forms an electrostatic field for the fluid contained in the chamber to provide a first spray force for spraying the fluid via the nozzle to form a liquid droplet; a physical spray module which is arranged in the chamber and opposite the nozzle, and which provides a second spray force for assisting the first spray force when the first spray force is generated; and a control unit for controlling the electrostatic spray module and the physical spray module such that the first spray force and the second spray force can be provided in a specific pattern.Type: GrantFiled: February 11, 2009Date of Patent: March 5, 2013Assignee: Enjet Co., Ltd.Inventors: Do Young Byun, Vu Dat Nguyen
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Patent number: 8333465Abstract: Disclosed are a roll-to-roll printing system and method in which a large number of micro-nozzles are formed directly in a printing roll, and thus ink supplied to the central portion of the roll can be formed into micro-inkjets by inducing an electrostatic field, and furthermore, as a result of the formation of the micro-inkjets, a micro-sized pattern significantly smaller than that achievable by a prior pattern formation method can be printed on a print medium, and in addition, the relative speed of the print medium relative to the roll can be maintained at a speed close to “0” so as to improve the resolution, integration density and precision of the printed pattern. According to the present invention, a large amount of micro-nozzles are formed directly in a printing roll, and thus ink supplied to the central portion of the roll can be formed into micro-inkjets by inducing an electrostatic field.Type: GrantFiled: September 8, 2008Date of Patent: December 18, 2012Assignee: Konkuk University Industrial Cooperation Corp.Inventors: Do Young Byun, Kee Hyun Shin, Ji Hoon Kim, Si Bui Quang Tran, Vu Dat Nguyen
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Publication number: 20110310148Abstract: The present invention relates to a liquid droplet spraying apparatus and method. The liquid droplet spraying apparatus of the present invention includes a chamber containing a fluid; a nozzle body having a nozzle for spraying the fluid in the chamber to one side of a material to be printed; an electrostatic spray module which is arranged in the vicinity of the chamber or the nozzle, and which forms an electrostatic field for the fluid contained in the chamber to provide a first spray force for spraying the fluid via the nozzle to form a liquid droplet; a physical spray module which is arranged in the chamber and opposite the nozzle, and which provides a second spray force for assisting the first spray force when the first spray force is generated; and a control unit for controlling the electrostatic spray module and the physical spray module such that the first spray force and the second spray force can be provided in a specific pattern.Type: ApplicationFiled: August 12, 2011Publication date: December 22, 2011Applicant: KONKUK UNIVERSITY INDUSTRIAL COOPERATION CORP.Inventors: Do Young Byun, Vu Dat Nguyen
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Publication number: 20110285792Abstract: The present invention relates to a liquid droplet spraying apparatus and method. The liquid droplet spraying apparatus of the present invention includes a chamber containing a fluid; a nozzle body having a nozzle for spraying the fluid in the chamber to one side of a material to be printed; an electrostatic spray module which is arranged in the vicinity of the chamber or the nozzle, and which forms an electrostatic field for the fluid contained in the chamber to provide a first spray force for spraying the fluid via the nozzle to form a liquid droplet; a physical spray module which is arranged in the chamber and opposite the nozzle, and which provides a second spray force for assisting the first spray force when the first spray force is generated; and a control unit for controlling the electrostatic spray module and the physical spray module such that the first spray force and the second spray force can be provided in a specific pattern.Type: ApplicationFiled: February 11, 2009Publication date: November 24, 2011Applicant: KONKUK UNIVERSITY INDUSTRIAL COOPERATION CORP.Inventors: Do Young Byun, Vu Dat Nguyen
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Publication number: 20110074859Abstract: Disclosed are a roll-to-roll printing system and method in which a large number of micro-nozzles are formed directly in a printing roll, and thus ink supplied to the central portion of the roll can be formed into micro-inkjets by inducing an electrostatic field, and furthermore, as a result of the formation of the micro-inkjets, a micro-sized pattern significantly smaller than that achievable by a prior pattern formation method can be printed on a print medium, and in addition, the relative speed of the print medium relative to the roll can be maintained at a speed close to “0” so as to improve the resolution, integration density and precision of the printed pattern. According to the present invention, a large amount of micro-nozzles are formed directly in a printing roll, and thus ink supplied to the central portion of the roll can be formed into micro-inkjets by inducing an electrostatic field.Type: ApplicationFiled: September 8, 2008Publication date: March 31, 2011Applicant: KONKUK UNIVERSITY INDUSTRIAL COOPERATION CORP.Inventors: Do Young Byun, Kee Hyun Shin, Ji Hoon Kim, Si Bui Quang Tran, Vu Dat Nguyen