Patents by Inventor Heung-Cheol Jeong
Heung-Cheol Jeong 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: 20230286292Abstract: An inkjet printing apparatus includes: an airflow stage extending in a first direction; a print head unit disposed above the airflow stage; and an electric field generating unit that moves in the first direction and generates electric field above the airflow stage.Type: ApplicationFiled: June 4, 2021Publication date: September 14, 2023Applicant: Samsung Display Co., LTD.Inventors: Byung Chul LEE, Heung Cheol JEONG, Myung Soo HUH, Jin Oh KWAG, Do Hun LEE
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Patent number: 11685154Abstract: An inkjet printing device includes a stage part including a stage, an inkjet head part including at least one inkjet head that disposes an ink on the stage, the ink including dipoles and a solvent having the dipoles, a heat treatment device that removes the solvent, a first sensing part that measures a position of the ink disposed on the stage, a second sensing part that measures a position of the inkjet head, and a third sensing part that measures a position of each of the dipoles disposed on the stage. A dipole aligning method includes disposing an ink on a substrate, the ink including dipoles and a solvent having the dipoles, generating an electric field on the substrate and disposing the dipoles on the substrate by the electric field, removing the solvent, and measuring a position of each of the dipoles disposed on the substrate.Type: GrantFiled: March 13, 2019Date of Patent: June 27, 2023Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Byung Chui Lee, Heung Cheol Jeong, Myung Soo Huh, Min Soo Kim, Jae Ha Lim
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Publication number: 20230150277Abstract: Provided are an inkjet printing apparatus and a printing method of a bipolar element by using the inkjet printing apparatus. The inkjet printing apparatus includes: a stage that moves in a first direction; an inkjet device that sprays ink on the stage; a.Type: ApplicationFiled: April 1, 2021Publication date: May 18, 2023Applicant: Samsung Display Co., LTD.Inventors: Byung Chul LEE, Heung Cheol JEONG, Myung Soo HUH, Jin Oh KWAG
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Publication number: 20230055700Abstract: Provided are an inkjet printing apparatus and a method for inspecting an inkjet head using same. The inkjet printing apparatus comprises: an inspection stage unit on which an inspection substrate is seated; an inkjet head unit including at least one inkjet head that ejects ink containing dipoles and a solvent in which the dipoles disperse, on the inspection stage unit; and a particle count inspection unit that is located so as to be spaced apart from the inkjet head unit in one direction. The particle count inspection unit comprises: a first heat treatment unit that is located on the top portion of the inspection stage unit; and a first sensing unit that is located on the bottom portion of the inspection stage unit and measures the number of dipoles sprayed onto the inspection substrate.Type: ApplicationFiled: June 2, 2020Publication date: February 23, 2023Inventors: Byung Chul LEE, Heung Cheol JEONG, Myung Soo HUH, Cheol Lae ROH, Do Hun LEE
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Publication number: 20230047796Abstract: An inkjet printing device includes a stage; an inkjet head disposed above the stage and comprising nozzles through which ink is discharged, the ink including bipolar elements extending in a direction; an ink circulation part which supplies the ink to the inkjet head, and to which the ink remaining after being discharged from the inkjet head is supplied; and at least one sensing part disposed between the inkjet head and the ink circulation part and sensing a number of the bipolar elements that are discharged through the nozzles.Type: ApplicationFiled: June 5, 2020Publication date: February 16, 2023Applicant: Samsung Display Co., LTD.Inventors: An Na RYU, Jin Oh KWAG, Heung Cheol JEONG
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Patent number: 11370218Abstract: An inkjet print apparatus includes a print head discharging ink onto a substrate, the print head including a first heater; a reservoir storing the ink; a first pipe supplying the ink to the reservoir; a second pipe collecting surplus ink; a mixing unit located on the first pipe and mixing the ink; a pump located on the second pipe and pressurizing and supplying the surplus ink to the reservoir; a temperature sensor located between the mixing unit and the print head and sensing a temperature of the ink; and a controller controlling a temperature of at least one of the first heater and the second heater in response to information received from the temperature sensor. The print head includes a heat insulator blocking heat emitted from the first heater between the substrate and the first heater.Type: GrantFiled: January 15, 2021Date of Patent: June 28, 2022Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Futoshi Yoshida, Cheong Wan Min, Min A Han, Jae Bum Pahk, Jeong Ho Yi, Heung Cheol Jeong, Myung Soo Huh
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Publication number: 20220080725Abstract: An inkjet printing device includes a stage part including a stage, an inkjet head part including at least one inkjet head that disposes an ink on the stage, the ink including dipoles and a solvent having the dipoles, a heat treatment device that removes the solvent, a first sensing part that measures a position of the ink disposed on the stage, a second sensing part that measures a position of the inkjet head, and a third sensing part that measures a position of each of the dipoles disposed on the stage. A dipole aligning method includes disposing an ink on a substrate, the ink including dipoles and a solvent having the dipoles, generating an electric field on the substrate and disposing the dipoles on the substrate by the electric field, removing the solvent, and measuring a position of each of the dipoles disposed on the substrate.Type: ApplicationFiled: March 13, 2019Publication date: March 17, 2022Applicant: Samsung Display Co., LTD.Inventors: Byung Chul LEE, Heung Cheol JEONG, Myung Soo HUH, Min Soo KIM, Jae Ha LIM
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Publication number: 20220040978Abstract: An inkjet printing and an inkjet printing method are provided. The inkjet printing device includes a stage comprising a substrate mounting part configured to receive a target substrate mounted thereon, a print head unit located above the stage and configured to spray an ink including a plurality of particles, and a suction device located at a side of the substrate mounting part and configured to generate negative pressure thereon.Type: ApplicationFiled: August 3, 2021Publication date: February 10, 2022Inventors: Heung Cheol JEONG, Do Hun LEE, Myung Soo HUH, Byung Chul LEE
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Publication number: 20210336142Abstract: An inkjet printing apparatus, a dipole alignment method, and a display device manufacturing method are provided. The inkjet printing apparatus includes a stage, a print head part disposed above the stage, and an electric field generating part that provides an electric field to a space between the stage and the print head part. The dipole alignment method includes providing an electric field at an area above a target substrate, spraying ink including a dipole onto the target substrate through the area, and landing the dipole on the target substrate. The display device manufacturing method includes preparing a base layer on which first and second electrodes are disposed, spraying ink including a light emitting element onto the base layer through the area, landing the light emitting element between the first and second electrodes.Type: ApplicationFiled: April 8, 2019Publication date: October 28, 2021Applicant: Samsung Display Co., LTD.Inventors: Heung Cheol JEONG, Byung Chul LEE, Myung Soo HUH, Jin Oh KWAG, Do Hun LEE
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Publication number: 20210300026Abstract: An inkjet print apparatus includes a print head discharging ink onto a substrate, the print head including a first heater; a reservoir storing the ink; a first pipe supplying the ink to the reservoir; a second pipe collecting surplus ink; a mixing unit located on the first pipe and mixing the ink; a pump located on the second pipe and pressurizing and supplying the surplus ink to the reservoir; a temperature sensor located between the mixing unit and the print head and sensing a temperature of the ink; and a controller controlling a temperature of at least one of the first heater and the second heater in response to information received from the temperature sensor. The print head includes a heat insulator blocking heat emitted from the first heater between the substrate and the first heater.Type: ApplicationFiled: January 15, 2021Publication date: September 30, 2021Applicant: Samsung Display Co., LTD.Inventors: Futoshi YOSHIDA, Cheong Wan MIN, Min A HAN, Jae Bum PAHK, Jeong Ho YI, Heung Cheol JEONG, Myung Soo HUH
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Publication number: 20160215384Abstract: A deposition source includes a reflector at an upper end of a frame, the reflector being in a form of a reflection plate in which nozzle apertures are located, the reflector having a sink inclined surface inclining toward a central portion in which the nozzle apertures are located, the nozzles apertures being recessed from an edge front end portion that is on the upper end of the frame.Type: ApplicationFiled: July 23, 2015Publication date: July 28, 2016Inventor: Heung Cheol JEONG
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Patent number: 9303317Abstract: A deposition apparatus includes a deposition source unit that has a crucible heating a deposition material filled therein to vaporize the deposition material and a plurality of nozzles spraying the vaporized deposition material, a substrate disposed to face the nozzles, a blind plate disposed between the deposition source unit and the substrate and including a plurality of first openings to guide a traveling direction of the deposition material sprayed from the nozzles, a mask disposed between the substrate and the blind plate and including a plurality of second openings to provide a path through which the deposition material passing through the first openings of the blind plate is deposited on the substrate, and a heater unit that heats the blind plate at a predetermined temperature to vaporize the deposition material stacked up on the blind plate.Type: GrantFiled: February 15, 2013Date of Patent: April 5, 2016Assignee: Samsung Display Co., Ltd.Inventor: Heung-Cheol Jeong
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Publication number: 20140033980Abstract: A deposition apparatus includes a deposition source unit that has a crucible heating a deposition material filled therein to vaporize the deposition material and a plurality of nozzles spraying the vaporized deposition material, a substrate disposed to face the nozzles, a blind plate disposed between the deposition source unit and the substrate and including a plurality of first openings to guide a traveling direction of the deposition material sprayed from the nozzles, a mask disposed between the substrate and the blind plate and including a plurality of second openings to provide a path through which the deposition material passing through the first openings of the blind plate is deposited on the substrate, and a heater unit that heats the blind plate at a predetermined temperature to vaporize the deposition material stacked up on the blind plate.Type: ApplicationFiled: February 15, 2013Publication date: February 6, 2014Applicant: SAMSUNG DISPLAY CO., LTD.Inventor: Heung-Cheol Jeong