公开(公告)号：US20250042151A1

公开(公告)日：2025-02-06

申请号：US18790687

申请日：2024-07-31

Applicant: Enjet Co. LTD

Inventor： Do Young Byun ,  Vu Dat Nguyen ,  Baek Hoon Seong

IPC: B41J2/045 ,  B41J2/06 ,  B41J2/125

Abstract: The present disclosure relates to an electrohydrodynamic jet printing apparatus and a method for controlling printing of the electrohydrodynamic jet printing apparatus. The electrohydrodynamic jet printing apparatus according to the present disclosure includes a nozzle that ejects supplied ink as a droplet towards a substrate; an electrode that is formed on the nozzle to form an electric field between the nozzle and the substrate by an applied voltage; a voltage supplier that applies the voltage to the electrode; and a controller that controls the voltage supplier, the controller controlling in real time the voltage being applied from the voltage supplier to the electrode such that a size of the droplet being ejected from the nozzle is constant.

公开(公告)号：US11383518B2

公开(公告)日：2022-07-12

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.

公开(公告)号：US20240131799A1

公开(公告)日：2024-04-25

申请号：US18058476

申请日：2022-11-23

Applicant: ENJET CO. LTD.

Inventor： Do Young Byun ,  Shaheer Mohiuddin Khalil ,  Vu Dat Nguyen ,  Baek Hoon Seong

IPC: B29C64/393 ,  B29C64/118 ,  B29C64/209 ,  B33Y30/00 ,  B33Y50/02 ,  G06K15/02 ,  G06K15/10

CPC classification number: B29C64/393 ,  B29C64/118 ,  B29C64/209 ,  B33Y30/00 ,  B33Y50/02 ,  G06K15/021 ,  G06K15/105

Abstract: Disclosed is a printing apparatus for a 3D surface, which performs printing by ejecting a droplet onto a 3D surface and controlling an electric field on an impact path of the droplet, the printing apparatus including: a ejecting environment information provider configured to provide ejecting environment information between a nozzle and an impact point; and a controller configured to predict a result of printing on an actual substrate by accumulating previous printing results according to printing conditions and the ejecting environment information into a database, and perform the printing on the 3D surface while changing the printing conditions provided by the database based on the ejecting environment information provided by the ejecting environment information provider.

公开(公告)号：US20230094682A1

公开(公告)日：2023-03-30

申请号：US17645664

申请日：2021-12-22

Applicant: ENJET CO. LTD.

Inventor： Do Young Byun ,  Vu Dat Nguyen ,  Kwangsun Jeon

IPC: B41J2/125 ,  B41J2/06 ,  B41J2/14

Abstract: The present disclosure relates to a printing apparatus with a plurality of nozzle heads and method for aligning a plurality of nozzle tips. The printing apparatus with a plurality of nozzle heads according to the present disclosure includes a first nozzle head having a first nozzle tip for discharging ink and a first moving part for moving the first nozzle tip, and disposed at one side of a working area on a substrate; a second nozzle head having a second nozzle tip for discharging ink and a second moving part for moving the second nozzle tip, and disposed at the other side of the working area on the substrate; and a first camera disposed above the substrate to observe the first nozzle tip and the second nozzle tip at the same time.

公开(公告)号：US10293602B2

公开(公告)日：2019-05-21

申请号：US15843001

申请日：2017-12-15

Applicant: Enjet Co. Ltd.

Inventor： Do Young Byun

IPC: B41J2/04 ,  B41J2/045 ,  B41J2/175 ,  B41J2/14 ,  B41J2/07

Abstract: The present disclosure relates to an ink jetting apparatus and a printing system including the same, the ink jetting apparatus including a liquid droplet generating unit configured to generate liquid droplets and jet the generated liquid droplets, a guide channel unit having a channel to guide the jetted liquid droplets and control evaporation of the liquid droplets, and being configured to protect the liquid droplets from thermal and physical disturbance; and a nozzle unit configured to discharge the liquid droplets that passed through the guide channel unit towards a substrate.

公开(公告)号：US10272670B2

公开(公告)日：2019-04-30

申请号：US15843050

申请日：2017-12-15

Applicant: Enjet Co. Ltd.

Inventor： Do Young Byun ,  Vu Dan Nguyen

IPC: B41J2/045 ,  B41J2/06 ,  B41J2/145

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.

公开(公告)号：US08888249B2

公开(公告)日：2014-11-18

申请号：US14147637

申请日：2014-01-06

Applicant: Enjet Co., Ltd.

Inventor： Do Young Byun ,  Ji Hoon Kim ,  Si Bui Quang Tran

IPC: B41J2/06 ,  B41J2/035 ,  B82Y15/00

CPC classification number: B41J2/035 ,  B41J2/06 ,  B82Y15/00 ,  Y10S977/902

Abstract: The present invention provides a droplet jetting apparatus which jets fluid in a droplet shape. The apparatus includes a main body (100), which has a chamber (110) for containing fluid. The main body further has at least one nozzle (120) which communicates with the chamber and jets a droplet onto a printable matter, and a first electrode (130) which is formed on the inner surface of at least one selected from between the nozzle and the chamber by patterning treatment to make electrical contact with the fluid. The apparatus further includes a second electrode (140), which is provided between the nozzle and the printable matter and has a through hole, through which the droplet is jetted from the nozzle onto the printable matter, a power supply (200) which supplies a voltage applied between the first electrode and the second electrode, and a control unit (300) which controls the power supply.

Abstract translation: 本发明提供一种以液滴形状喷射流体的液滴喷射装置。 该装置包括主体（100），其具有用于容纳流体的室（110）。 主体还具有至少一个喷嘴（120），其与腔室连通并将液滴喷射到可印刷物体上;以及第一电极（130），其形成在至少一个的内表面上，所述第一电极选自喷嘴和 该腔室通过图案化处理以与流体电接触。 该设备还包括设置在喷嘴和可印刷物之间的第二电极（140），并且具有通孔，液滴从喷嘴喷射到可印刷物体上，电源（200） 施加在第一电极和第二电极之间的电压，以及控制电源的控制单元（300）。

公开(公告)号：US11355360B2

公开(公告)日：2022-06-07

申请号：US16587740

申请日：2019-09-30

Applicant: ENJET CO. LTD.

Inventor： Do Young Byun ,  Vu Dat Nguyen ,  Yong Hee Jang

IPC: H01L21/56 ,  H01L21/67 ,  H01L21/687 ,  H01L21/683

Abstract: Disclosed are an underfill method and apparatus for a semiconductor package, the underfill method includes loading a substrate; charging a filler to be filled in between the substrate and a device; applying the filler to the substrate; and subjecting the applied filler to an electric field.

公开(公告)号：US10807358B2

公开(公告)日：2020-10-20

申请号：US16357352

申请日：2019-03-19

Applicant: ENJET CO. LTD.

Inventor： Do Young Byun ,  Vu Dat Nguyen

IPC: B41J2/045 ,  B41J25/304

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.

公开(公告)号：US12172438B2

公开(公告)日：2024-12-24

申请号：US18521721

申请日：2023-11-28

Applicant: ENJET CO. LTD.

Inventor： Do Young Byun ,  Vu Dat Nguyen ,  Kwangsun Jeon

IPC: B41J2/125 ,  B41J2/06 ,  B41J2/14

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.