Patents by Inventor Cheong-Wan Min
Cheong-Wan Min 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: 20250242455Abstract: A worktable system includes a base stage extending in a first direction and a second direction intersecting the first direction, and having a first stroke length, and a plurality of first stages disposed on the base stage adjacent to each corner portion of the base stage, and the plurality of first stages move in the first direction and the second direction by a second stroke length that is smaller than the first stroke length.Type: ApplicationFiled: January 3, 2025Publication date: July 31, 2025Applicant: Samsung Display Co., LTD.Inventors: Jungwoong Byun, MYUNGSOO HUH, CHEONG-WAN MIN, JAIHYUK CHOI
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Patent number: 12330434Abstract: A droplet discharging apparatus may include a transfer part moving a substrate including a first target position in a first direction, an inkjet head disposed on the transfer part and discharging a first droplet to the first target position of the substrate, a first camera positioned in a second direction opposite to the first direction of the inkjet head, the first camera acquiring a first image corresponding to the first target position of the substrate, a second camera positioned in the first direction of the inkjet head, the second camera acquiring a second image corresponding to the first target position of the substrate, and an image processor receiving the first image and the second image, and comparing the first image and the second image to inspect a discharge state of the first droplet.Type: GrantFiled: May 27, 2022Date of Patent: June 17, 2025Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jungwoong Byun, Toshinaru Suzuki, Cheong-Wan Min, Jeongwon Han
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Publication number: 20250058565Abstract: An inkjet printing apparatus includes: a plurality of inkjet heads configured to discharge ink, a supply storage device configured to supply the ink to the plurality of inkjet heads, a plurality of supply flow paths configured to move the ink from the supply storage device to the plurality of inkjet heads, a plurality of discharge flow paths configured to move the ink from the plurality of inkjet heads to the supply storage device, and a plurality of by-pass lines directly connecting the plurality of supply flow paths with the plurality of discharge flow paths.Type: ApplicationFiled: April 9, 2024Publication date: February 20, 2025Inventors: Lae Ho KIM, Yu KONTA, Cheong Wan MIN, Jae Bum PAHK, Min Woo LEE, Tae Ho LEE, Jai Hyuk CHOI, Myung Soo HUH
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Patent number: 12128685Abstract: An inkjet printing device according to the present embodiment includes an alignment plate, a substrate positioned on one surface in a third direction of the alignment plate, and an inkjet head combined with the substrate, wherein the alignment plate includes a first position adjustor positioned on a first side surface in a first direction of the alignment plate, and a second position adjustor, a third position adjustor, a fourth position adjustor, a fifth position adjustor, and a sixth position adjustor positioned at a second side surface in a second direction of the alignment plate, and each of the position adjustors adjusts the position of the substrate.Type: GrantFiled: June 7, 2022Date of Patent: October 29, 2024Assignee: Samsung Display Co., Ltd.Inventors: Jung Woong Byun, Toshinaru Suzuki, Cheong-Wan Min
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Publication number: 20240026105Abstract: A method for forming a resin layer, the method including selectively applying an ultraviolet ray curable material that reacts to ultraviolet rays on a target substrate, selectively curing a preliminary resin layer by irradiating at least a portion of an entire area of the preliminary resin layer formed of the ultraviolet ray curable material with first ultraviolet rays whose shape and amount of light are adjusted, and completely curing the preliminary resin layer by irradiating second ultraviolet rays having a different amount of light from the first ultraviolet rays whose shape and amount of light are adjusted.Type: ApplicationFiled: March 28, 2023Publication date: January 25, 2024Applicant: Samsung Display Co., LTD.Inventors: Jungwoong BYUN, DOHUN LEE, CHEONG-WAN MIN, JAIHYUK CHOI
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Publication number: 20230084045Abstract: An inkjet printing device according to the present embodiment includes an alignment plate, a substrate positioned on one surface in a third direction of the alignment plate, and an inkjet head combined with the substrate, wherein the alignment plate includes a first position adjustor positioned on a first side surface in a first direction of the alignment plate, and a second position adjustor, a third position adjustor, a fourth position adjustor, a fifth position adjustor, and a sixth position adjustor positioned at a second side surface in a second direction of the alignment plate, and each of the position adjustors adjusts the position of the substrate.Type: ApplicationFiled: June 7, 2022Publication date: March 16, 2023Inventors: Jung Woong BYUN, Toshinaru SUZUKI, Cheong-Wan MIN
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Publication number: 20230072141Abstract: A droplet discharging apparatus may include a transfer part moving a substrate including a first target position in a first direction, an inkjet head disposed on the transfer part and discharging a first droplet to the first target position of the substrate, a first camera positioned in a second direction opposite to the first direction of the inkjet head, the first camera acquiring a first image corresponding to the first target position of the substrate, a second camera positioned in the first direction of the inkjet head, the second camera acquiring a second image corresponding to the first target position of the substrate, and an image processor receiving the first image and the second image, and comparing the first image and the second image to inspect a discharge state of the first droplet.Type: ApplicationFiled: May 27, 2022Publication date: March 9, 2023Applicant: Samsung Display Co., LTD.Inventors: Jungwoong BYUN, Toshinaru SUZUKI, Cheong-Wan MIN, Jeongwon HAN
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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: 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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Patent number: 9069211Abstract: A method of aligning an alignment layer of a liquid crystal display (LCD) includes positioning a substrate on a stage; the substrate having the alignment layer provided thereon and the alignment layer including a plurality of alignment regions. Data identifying positions of the alignment regions relative to the alignment layer are loaded. A control signal for controlling a supply of light based on the loaded data identifying the positions of the alignment regions is generated. The light is supplied to the alignment regions according to the control signal and the alignment regions are aligned. The light is supplied from at least two different angles of incidence so that the alignment regions are aligned in at least two different directions.Type: GrantFiled: September 9, 2011Date of Patent: June 30, 2015Assignee: Samsung Display Co., Ltd.Inventors: Cheong-Wan Min, Jeamin Lee, Jaeil Kim, BongSung Seo
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Publication number: 20120154769Abstract: A method of aligning an alignment layer of a liquid crystal display (LCD) includes positioning a substrate on a stage; the substrate having the alignment layer provided thereon and the alignment layer including a plurality of alignment regions. Data identifying positions of the alignment regions relative to the alignment layer are loaded. A control signal for controlling a supply of light based on the loaded data identifying the positions of the alignment regions is generated. The light is supplied to the alignment regions according to the control signal and the alignment regions are aligned. The light is supplied from at least two different angles of incidence so that the alignment regions are aligned in at least two different directions.Type: ApplicationFiled: September 9, 2011Publication date: June 21, 2012Inventors: Cheong-Wan Min, Jeamin Lee, Jaeil Kim, BongSung Seo