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公开(公告)号：US20240326468A1
公开(公告)日：2024-10-03
申请号：US18618545
申请日：2024-03-27
Applicant: ENJET CO. LTD.
Inventor： Do Young BYUN , Baek Hoon SEONG , Won-Il SON
CPC classification number: B41J3/4073 , B41J2/04566 , B41J2/04593 , B41J2/085 , B41J2/17523 , B41J25/001 , C09D11/30
Abstract: The present disclosure relates to a 3D surface printing apparatus for the edge area of substrate, the apparatus including a jig part that erects the substrate and immobilizes it, a nozzle part that comprises a nozzle that ejects ink through Electrohydrodynamic (EHD) jetting by applying a voltage to an electrode, from above the erected substrate; a moving part that moves the nozzle left and right; and a control part that controls a printing operation, wherein the moving part prints a pattern that is continuously connected along a front surface of the rim of the substrate, a side surface of the substrate and a rear surface of the rim of the substrate as it horizontally moves the nozzle, and the control part controls the printing operation, considering changes in 3D electric field distribution.
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公开(公告)号：US20240208213A1
公开(公告)日：2024-06-27
申请号：US18391753
申请日：2023-12-21
Applicant: ENJET CO. LTD.
Inventor： Do Young BYUN , Byungjik LIM , Shaheer MOHIUDDIN KHALIL , Baek Hoon SEONG , Jaewoo JOUNG , Jaeyong CHOI
Abstract: Disclosed is an inkjet printhead. The inkjet printhead with a plurality of nozzles to eject a liquid solution by an electrohydrodynamic method includes: a first electrode formed for each of the plurality of nozzles and applied with a voltage for ejecting the liquid solution by the electrohydrodynamic method; a first voltage controller configured to apply the voltage to the first electrode; and a second electrode placed between and spaced apart from the first electrodes formed in the nozzles and grounded to inhibit electric field interference between the nozzles.
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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：US20190061351A1
公开(公告)日：2019-02-28
申请号：US15843050
申请日：2017-12-15
Applicant: Enjet Co. Ltd.
Inventor： Do Young BYUN , Vu Dan NGUYEN
Abstract: The present disclosure relates to an ink jetting apparatus with multi-nozzles, the apparatus including a liquid droplet generating unit configured to generate liquid droplets from ink and jet the liquid droplets through the multi-nozzles, and an evaporation control unit configured to guide the liquid droplets jetted from the multi-nozzles to protect the liquid droplets from thermal and physical disturbance and control evaporation of the liquid droplets.
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公开(公告)号：US20240376331A1
公开(公告)日：2024-11-14
申请号：US18656267
申请日：2024-05-06
Applicant: ENJET CO., LTD
Inventor： Do Young BYUN , Won-il SON , Jang Seung JUN
Abstract: The present disclosure relates to a conductive ink composition, which is a printable conductive ink composition for forming a conductive pattern on a substrate using an EHD (Electrohydrodynamic) method. When the composition is sprayed onto a substrate having a three-dimensional surface to form a conductive pattern, the conductive pattern forms a conformal line on the three-dimensional surface.
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Patent Agency Ranking
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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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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