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公开(公告)号：US20200331270A1
公开(公告)日：2020-10-22
申请号：US16542885
申请日：2019-08-16
Applicant: ENJET CO. LTD.
Inventor： Do Young BYUN , Vu Dat NGUYEN , Yong Hee JANG
IPC: B41J2/14
Abstract: Disclosed is an induced electrohydrodynamic (EHD) jet printing apparatus including: a nozzle configured to discharge a fed solution to an opposite substrate; a main electrode contactlessly isolated from the solution inside the nozzle by an insulator; and a voltage supplier configured to apply voltage to the main electrode.
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公开(公告)号：US20230286272A1
公开(公告)日：2023-09-14
申请号：US18180541
申请日：2023-03-08
Applicant: ENJET CO. LTD.
Inventor： Do Young BYUN , Vu Dat NGUYEN , Chihyun PARK , Byungjik LIM , Hyungdong LEE , Hyunwoong YOO , Jaewoo JOUNG
CPC classification number: B41J2/14201 , B41J2/1623 , B41J2/1607 , B41J2002/14419
Abstract: Disclosed are an inkjet printhead and a method of manufacturing the same, the inkjet printhead including: a first layer including an inlet formed to penetrate a substrate and introduce ink therein, and a plurality of membranes; a second layer disposed beneath the first layer, and including a manifold formed to penetrate a substrate and communicate with the inlet or recessed on a top of the substrate, and a plurality of nozzle channels formed to penetrate the substrate below the membrane and allow the ink transferred from the manifold to flow therein; a third layer disposed beneath the second layer, and including a plurality of nozzles formed in a substrate and communicating the plurality of nozzle channels; a piezoelectric actuator formed on the first layer formed with the membrane, and including a lower first electrode, a piezoelectric body on the first electrode, and a second electrode on the piezoelectric body; a first voltage controller configured to oscillate the membrane by applying a pulse voltage to the first electrode and the second electrode; a third electrode disposed beneath the third layer, formed around each nozzle, and surrounded with an insulator; and a second voltage controller configured to discharge droplets of the ink based on induced electric force by applying voltage to the third electrode.
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公开(公告)号：US20230129644A1
公开(公告)日：2023-04-27
申请号：US17961411
申请日：2022-10-06
Applicant: ENJET CO. LTD.
Inventor： Do Young BYUN , Vu Dat NGUYEN
Abstract: The present disclosure relates to a pick-and-place apparatus of micro LED chip for chip-repairing of micro LED display, including a nozzle having a capillary form and having a nozzle tip that is smaller than a top size area of the micro LED chip; a pressure adjustment part that applies negative pressure inside the nozzle to adsorb the micro LED chip to the nozzle tip and applies positive pressure inside the nozzle or removes the negative pressure inside the nozzle to mount the micro LED chip adsorbed to the nozzle tip onto a repair pixel; an imaging part that monitors a position and posture of the micro LED chip adsorbed to the nozzle tip in real time; a moving part that moves the nozzle; and a control part that receives image information from the imaging part, and mounts the micro LED chip onto a repair pixel while controlling the pressure adjustment part and the moving part.
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公开(公告)号：US20190240979A1
公开(公告)日：2019-08-08
申请号：US16269570
申请日：2019-02-07
Applicant: ENJET CO. LTD.
Inventor： Do Young BYUN , Vu Dat NGUYEN
Abstract: Disclosed are a cartridge nozzle assembly and an apparatus for injecting ink including the cartridge nozzle assembly. In the ink injecting apparatus for forming a pattern by adhering the ink injected from a nozzle onto a substrate, the ink injecting apparatus includes a cartridge nozzle assembly, in a cartridge type, including a chamber sealingly accommodating the ink, and the nozzle for discharging the ink accommodated in the chamber; and a cartridge nozzle fixing member for replaceably fixing the cartridge nozzle assembly.
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公开(公告)号：US20230302718A1
公开(公告)日：2023-09-28
申请号：US18181676
申请日：2023-03-10
Applicant: ENJET CO. LTD.
Inventor： Do Young BYUN , Vu Dat NGUYEN , Hyung Dong LEE
IPC: B29C64/112 , B29C64/188 , B29C64/245 , B29C64/209 , B29C64/386 , B33Y30/00
CPC classification number: B29C64/112 , B29C64/188 , B29C64/209 , B29C64/245 , B29C64/386 , B33Y30/00 , B33Y10/00
Abstract: The present disclosure relates to an additive manufacturing system and additive manufacturing method comprising a printing platform that sprays a droplet and that deposits the droplet on a substrate or a build platform by attractive-force control of an electric field to form at least one layer of a laminated body in a layer by layer method; a flattening unit that flattens the laminated body formed by the printing platform to a preset height; a curing unit that cures the laminated body flattened by the flattening unit; and a controller that controls the printing platform, the flattening unit and the curing unit, thereby significantly increasing the manufacturing speed while improving the quality of additive manufacturing.
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Patent Agency Ranking
公开(公告)号：US20230041012A1
公开(公告)日：2023-02-09
申请号：US17816918
申请日：2022-08-02
Applicant: ENJET CO. LTD.
Inventor： Do Young BYUN , Vu Dat NGUYEN
IPC: B41J2/14
Abstract: The present disclosure relates to a printing apparatus, and the printing apparatus according to the present disclosure includes an optical unit for expanding and displaying a hitting point of ink, from above a substrate; and a nozzle unit for ejecting the ink, wherein the nozzle unit includes a nozzle body that is obliquely disposed with respect to the substrate; and a nozzle that is coupled to the nozzle body, and has a flow path from which the ink is ejected, and has a tip that is bended towards the substrate.
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公开(公告)号：US20190291415A1
公开(公告)日：2019-09-26
申请号：US16357352
申请日：2019-03-19
Applicant: ENJET CO. LTD.
Inventor： Do Young BYUN , Vu Dat NGUYEN
IPC: B41J2/045
Abstract: Disclosed is a printing apparatus. In an exemplary embodiment, the printing apparatus includes a nozzle for ejecting ink, a driving device for moving the nozzle, an imaging device for capturing an image displaying an ink printing process, and an automatic positioning controller for automatically setting a position of the nozzle based on the image captured by the imaging device while moving the nozzle by means of the driving device.
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公开(公告)号：US20240092079A1
公开(公告)日：2024-03-21
申请号：US18521721
申请日：2023-11-28
Applicant: ENJET CO. LTD.
Inventor： Do Young BYUN , Vu Dat NGUYEN , Kwangsun JEON
CPC classification number: B41J2/125 , B41J2/06 , B41J2/14 , B41J2202/15
Abstract: The present disclosure relates to a method for aligning a plurality of nozzle tips, the method comprising:
a first nozzle aligning step of setting a reference position of a first nozzle tip for discharging ink within a working area through an image of a first camera observing the working area above a substrate and a second camera observing the working area in an inclined direction;
a second nozzle aligning step of setting a reference position of a second nozzle tip for discharging ink within the working area through the image of the first camera and the second camera;
a step of detecting a position of a substrate based on the image of the second camera; and
a printing preparation step of positioning the first nozzle tip and the second nozzle tip to a printing position on the substrate.-
公开(公告)号：US20210260876A1
公开(公告)日：2021-08-26
申请号：US17185486
申请日：2021-02-25
Applicant: ENJET CO. LTD.
Inventor： Do Young BYUN , Yong Hee JANG , Vu Dat NGUYEN
IPC: B41J2/14
Abstract: The present disclosure relates to an induced electrohydrodynamic jet printing apparatus including an induced auxiliary electrode, and the induced electrohydrodynamic jet printing apparatus including an induced auxiliary electrode according to the present disclosure includes a nozzle for discharging supplied solution towards an opposite substrate through a nozzle hole formed at one end; a main electrode coated with an insulator and interpolated inside the nozzle, thus not contacting the solution inside the nozzle but separated from the solution; the induced auxiliary electrode made of a conductive material and formed at an outer surface of the nozzle; and a voltage supply for applying voltage to the main electrode.
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10.发明申请公开(公告)号：US20130307892A1
公开(公告)日：2013-11-21
申请号：US13898091
申请日：2013-05-20
Applicant: ENJET CO., LTD.
Inventor： Do-Young BYUN , Vu Dat NGUYEN
IPC: B41J2/045
CPC classification number: B41J2/04586 , B41J3/4073
Abstract: 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.
Abstract translation: 本文提供了一种使用电动力力在三维表面上打印的装置，该装置具有放置打印对象的台阶; 形状获取器，存储打印对象的表面信息; 喷嘴，接收墨水并将接收到的墨水排出到打印对象的表面侧; 向喷嘴供电的电源; 以及控制器，从形状获取器接收打印对象的表面信息，并控制喷嘴或台的运动。 因此，根据本公开，提供了一种使用能够对三维表面进行精密印刷处理的电动力学在三维表面上进行印刷的装置。
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