Enjet Co. Ltd.

Konkuk University Industrial Cooperation Corp

Vu Dat Nguyen

Do Young Byun

Yong Hee Jang

Do-Young Byun

Baek Hoon Seong

Kwangsun Jeon

Ji Hoon Kim

Hyung Dong Lee

Si Bui Quang Tran

Kee Hyun Shin

Byungjik Lim

Chihyun Park

Hyungdong Lee

Hyunwoong Yoo

Jaewoo Joung

Shaheer Mohiuddin Khalil

The invention 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.

Additive manufacturing system and additive manufacturing method

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.

Inkjet printhead and method of manufacturing the same

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.

Printing apparatus for 3D surface

The present disclosure relates to a method for aligning a plurality of nozzle tips, the method comprising:

Method for aligning a plurality of nozzle tips

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.

Printing appartus

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.

Induced electrohydrodynamic jet printing apparatus including auxiliary electrode

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.

Underfill method for semiconductor package

Disclosed is an electrohydrodynamic printing apparatus including: a nozzle configured to discharge liquid toward a substrate; a voltage applier configured to form an electric field between the nozzle and the substrate; and a laser beam emitter configured to emit a laser beam toward a position to which liquid is discharged on the substrate. Thus, it is possible to accurately and stably form a microscale deposition structure.

Electrohydrodynamic printing apparatus

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.

Induced electrohydrodynamic jet printing apparatus

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.

Printing apparatus

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.

Cartridge nozzle assembly and apparatus for injecting ink

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.

Contact-type patterning device

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.

Apparatus for spraying and patterning using electrostatic force

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.

Apparatus for printing on 3-dimensional surface using electrohydrodynamic force

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.

Growing community of inventors

Suwon-si, South Korea

Vu Dat Nguyen