Patents by Inventor Byung Oh Choi
Byung Oh Choi 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: 20240155926Abstract: A display device of a tiled display includes a first substrate including an opening hole, a laser absorption layer disposed on the first substrate, including amorphous silicon, and multiple first contact holes, a first barrier insulating layer disposed on the laser absorption layer and including multiple second contact holes overlapping the first contact holes, multiple pad portions disposed on the first barrier insulating layer and partially disposed in the second contact holes, a second barrier insulating layer disposed on the first barrier insulating layer and the pad portions, a display layer disposed on the second barrier insulating layer, and a flexible film disposed under the first substrate, inserted into the opening hole, and electrically connected to the pad portions. A portion of the first barrier insulating layer is disposed in each of the first contact holes. The pad portions are electrically insulated from the laser absorption layer.Type: ApplicationFiled: July 25, 2023Publication date: May 9, 2024Applicant: Samsung Display Co., LTD.Inventors: Dong Sung LEE, Byung Hoon KIM, Tae Oh KIM, Se Hun CHOI
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Publication number: 20240153966Abstract: A display device includes a substrate including an opening hole, a first barrier insulating layer on the substrate, a plurality of first pad portions on the first barrier insulating layer and in a first contact hole partially penetrating the first barrier insulating layer, a second barrier insulating layer on the first barrier insulating layer and the plurality of first pad portions, a plurality of second pad portions on the second barrier insulating layer and in a second contact hole partially penetrating the first barrier insulating layer and the second barrier insulating layer, a third barrier insulating layer on the second barrier insulating layer and the plurality of second pad portions, a display layer on the third barrier insulating layer, and a flexible film under the substrate, and inserted into the opening hole to be electrically connected to the plurality of first and second pad portions.Type: ApplicationFiled: September 25, 2023Publication date: May 9, 2024Inventors: Se Hun CHOI, Dong Sung LEE, Byung Hoon KIM, Tae Oh KIM
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Patent number: 11963426Abstract: A display device includes a sensor having a detection electrode. An optical pattern layer is disposed directly on the sensor and includes a plurality of transmission portions and a light blocking portion. A display panel is disposed on the optical pattern layer. A minimum distance between the detection electrode and the light blocking portion is in a range of 1 micrometer-5 micrometers.Type: GrantFiled: June 18, 2020Date of Patent: April 16, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Dae-Young Lee, Gee-Bum Kim, Byung Han Yoo, Sangwoo Kim, Jungha Son, Taekyung Ahn, Yunjong Yeo, Kijune Lee, Jaeik Lim, Min Oh Choi, Chaungi Choi
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Publication number: 20240116366Abstract: In a control method of a motor drive system, when a first motor corresponding to a first drive wheel is being driven in a second drive mode among a first drive mode in which the first motor is driven by a first inverter of the motor drive system and connected to a first end of each of coils of the first motor and the second drive mode in which the first motor is driven by the first inverter and a second inverter connected to a second end of each of the coils and configured to selectively operate, whether or not the second inverter malfunctions is determined. When the second inverter malfunctions, a drive mode is changed so that the first motor is driven in the first drive mode. An output limit of the first motor in the first drive mode is relaxed.Type: ApplicationFiled: May 8, 2023Publication date: April 11, 2024Applicants: Hyundai Motor Company, Kia CorporationInventors: Seung Hyeon BIN, Byung Oh Tak, Seong Min Kim, Ho Rim Choi
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Publication number: 20240116372Abstract: An electrified vehicle includes a motor including a plurality of windings, a first inverter connected to a first end of each of the plurality of windings and configured to drive the motor, a second inverter connected to a second end of each of the plurality of windings and configured to drive the motor in a second driving mode of a first driving mode and the second driving mode, a first controller configured to determine one of first and second output limit lines as an output limit line of the first driving mode, depending on whether a preset condition is satisfied, and a second controller configured to bidirectionally switch the first driving mode and the second driving mode within an operating point range according to the output limit line of the first driving mode in accordance with a value of a torque command for the motor and counter magnetic flux of the motor.Type: ApplicationFiled: March 2, 2023Publication date: April 11, 2024Applicants: Hyundai Motor Company, Kia CorporationInventors: Seung Hyeon BIN, Byung Oh TAK, Seong Min KIM, Ho Rim CHOI
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Publication number: 20240113270Abstract: A display device includes a base layer including a first base layer and a second base layer disposed on a rear surface of the first base layer, light emitting elements disposed on a surface of the first base layer, and pads including a first pad and a second pad, which are disposed on the rear surface of the first base layer and are spaced apart from each other. The base layer further includes blocking layers which are disposed between the first base layer and the second base layer and at least portions of the blocking layers do not overlap the pads in a plan view. The blocking layers include a first blocking layer and a second blocking layer, which are disposed in different layers.Type: ApplicationFiled: August 14, 2023Publication date: April 4, 2024Applicant: Samsung Display Co., LTD.Inventors: Se Hun CHOI, Dong Sung LEE, Byung Hoon KIM, Tae Oh KIM
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Publication number: 20240105897Abstract: A display device comprises a first substrate comprising a first contact hole, a laser absorption layer disposed on the first substrate and containing amorphous silicon, a first barrier insulating layer disposed on the laser absorption layer, fan-out lines disposed in a metal layer on the first barrier insulating layer and comprising pad portions inserted into second contact holes provided in the first barrier insulating layer and the laser absorption layer, a second barrier insulating layer disposed on the metal layer, a second substrate disposed on the second barrier insulating layer, and a display layer disposed on the second substrate. The second substrate is inserted into a third contact hole provided in the second barrier insulating layer, the first barrier insulating layer, and the laser absorption layer disposed between the pad portions.Type: ApplicationFiled: July 21, 2023Publication date: March 28, 2024Applicant: Samsung Display Co., LTD.Inventors: Se Hun CHOI, Dong Sung LEE, Mi Sun KIM, Byung Hoon KIM, Tae Oh KIM
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Patent number: 9193143Abstract: The present invention relates to a precision overprinting method of printed electronics rotary printing where a location can be adjusted in real time. More particularly, minute precise printing electronic patterns of a micrometer level which are multilayered by a plurality of gravure offset printing units are accurately overprinted, and a fine deviation in a rotation direction and an axial direction of a plate cylinder is quickly solved. The present invention also relates to a precision overprinting method of printed electronics rotary printing where a location can be adjusted in real time, capable of verifying a printing quality by displaying register marks printed in printing units and alignment state on a display device.Type: GrantFiled: September 26, 2012Date of Patent: November 24, 2015Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALSInventors: Byung-Oh Choi, Byung-Soon Ryoo, Kyu Jin Lim, Dong-Soo Kim, Jeong Dai Jo
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Patent number: 8997649Abstract: The present invention relates to a cliché, and it particularly relates to a cliché with a partition formed thereon for controlling a blanket and the partition to be parallel with each other by the partition when a partition is protrusively formed on the cliché and the blanket is not combined with the cliché according to a predetermined method, controlling functional ink disposed between the blanket and the cliché to be transferred while not spreading so that it may be transferred to a substrate in a shape to be patterned when the blanket does not contact the cliché, and an electronic printing device and method using the same.Type: GrantFiled: September 27, 2012Date of Patent: April 7, 2015Assignee: Korea Institute of Machinery & MaterialsInventors: Taik Min Lee, In Young Kim, Jeong Dai Jo, Byung-Oh Choi
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Patent number: 8724177Abstract: A printing apparatus having an automatic printing sheet feeder integrated thereto to improve mass productivity. The printing apparatus includes a base, a moving stage, an automatic printing sheet feeder, and a printing roll. The moving stage is linearly movable along the base, and has a lithographic plate seated on the top surface thereof, the lithographic plate having a printing pattern thereon. The automatic printing sheet feeder is installed on the moving stage. The automatic printing sheet feeder includes an unwinding roll, which supplies the printing sheet, a rewinding roll, which collects the printing sheet, and a plurality of guide rolls, which guide the printing sheet to pass through the printing area of the moving stage. The printing roll is installed on the base, and performs printing by transferring ink from recesses of a printing pattern of the lithographic plate to the printing sheet on the moving stage.Type: GrantFiled: June 9, 2010Date of Patent: May 13, 2014Assignee: Korea Institute of Machinery & MaterialsInventors: Taik Min Lee, Jeongdai Jo, Dong Soo Kim, Byung Oh Choi, Chung Hwan Kim, Dong Youn Shin
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Patent number: 8689687Abstract: The present invention discloses an apparatus for manufacturing electronic devices using a roll-to-roll rotary pressing process, comprising a winding roll around which flexible printing paper is wound; a plurality of printing units arranged in a straight line; at least one coating unit; a rewinding roll to rewind the printing paper when printing has been completed; a plurality of guide rolls arranged between the winding roll and the rewinding roll, thus guiding the printing paper; a plurality of drying units, each drying unit being provided on a printing paper-path between the printing unit and the adjacent guide roll to dry ink transferred to the printing paper or on a printing paper-path between the coating unit and the adjacent guide roll to dry the printing paper on which coating agent is supplied; and tension regulating units installed around the winding roll and the rewinding roll, respectively, for regulating tension of the printing paper.Type: GrantFiled: June 1, 2009Date of Patent: April 8, 2014Assignee: Korea Institute of Machinery & MaterialsInventors: Byung-Oh Choi, Byung-Soon Ryu, Kyu-Jin Lim, Kwang-Young Kim, Dong-Soo Kim, So-Nam Yun, Young-Bog Ham, Taik-Min Lee, Jeong-Dai Jo, Hyun-Eui Lim, Chan-Su Yoo
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Publication number: 20140083316Abstract: The present invention relates to a precision overprinting method of printed electronics rotary printing where a location can be adjusted in real time. More particularly, minute precise printing electronic patterns of a micrometer level which are multilayered by a plurality of gravure offset printing units are accurately overprinted, and a fine deviation in a rotation direction and an axial direction of a plate cylinder is quickly solved. The present invention also relates to a precision overprinting method of printed electronics rotary printing where a location can be adjusted in real time, capable of verifying a printing quality by displaying register marks printed in printing units and alignment state on a display device.Type: ApplicationFiled: September 26, 2012Publication date: March 27, 2014Applicant: KOREA INSTITUTE OF MACHINERY & MATERIALSInventors: Byung-Oh CHOI, Byung-Soon RYOO, Kyu Jin LIM, Dong-Soo KIM, Jeong Dai JO
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Patent number: 8567822Abstract: The present invention relates to a luminous advertisement sheet. The luminous advertisement sheet includes a light-transmitting print sheet having an EL advertisement region formed in at least one area of the print sheet, and a general advertisement region formed in the other area thereof. The EL advertisement region has at least one of a fixed pattern portion in which a transparent electrode layer, an EL layer and a dielectric layer are sequentially laminated and a variable pattern portion in which a transparent electrode layer, an EL layer, a dielectric layer and a plurality of pixel electrode layers are sequentially laminated. The general advertisement region allows general dye printing to be performed therein. The luminous advertisement sheet further includes a pattern electrode layer laminated and printed with a conductive ink material to have a predetermined luminous pattern in at least one area of the dielectric layer laminated in the fixed pattern portion and/or the variable pattern portion.Type: GrantFiled: December 5, 2007Date of Patent: October 29, 2013Assignee: Korea Institute of Machinery & MaterialsInventors: Taik-Min Lee, Dong-Youn Shin, Chung-Hwan Kim, Jeong-Dai Jo, Dong-Soo Kim, Byung-Oh Choi
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Publication number: 20130070306Abstract: A printing apparatus having an automatic printing sheet feeder integrated thereto to improve mass productivity. The printing apparatus includes a base, a moving stage, an automatic printing sheet feeder, and a printing roll. The moving stage is linearly movable along the base, and has a lithographic plate seated on the top surface thereof, the lithographic plate having a printing pattern thereon. The automatic printing sheet feeder is installed on the moving stage. The automatic printing sheet feeder includes an unwinding roll, which supplies the printing sheet, a rewinding roll, which collects the printing sheet, and a plurality of guide rolls, which guide the printing sheet to pass through the printing area of the moving stage. The printing roll is installed on the base, and performs printing by transferring ink from recesses of a printing pattern of the lithographic plate to the printing sheet on the moving stage.Type: ApplicationFiled: June 9, 2010Publication date: March 21, 2013Inventors: Taik Min Lee, Jeongdai Jo, Dong Soo Kim, Byung Oh Choi, Chung Hwan Kim, Dong Youn Shin
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Patent number: 7988785Abstract: The present invention provides a printing head for nano patterning including a manifold for accommodating a liquid printing material, a cartridge with an injection chamber communicating with the manifold, and a sample holder for patterning installed outside the injection chamber of the cartridge.Type: GrantFiled: March 30, 2010Date of Patent: August 2, 2011Assignee: Korea Institute of Machinery & MaterialsInventors: Dong-Soo Kim, Won-Hee Lee, Taek-Min Lee, Doo-Sun Choi, Byung-Oh Choi
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Patent number: 7887635Abstract: The present invention provides a printing head for nano patterning including a manifold for accommodating a liquid printing material, a cartridge with an injection chamber communicating with the manifold, and a sample holder for patterning installed outside the injection chamber of the cartridge.Type: GrantFiled: May 4, 2006Date of Patent: February 15, 2011Assignee: Korea Institute of Machinery & MaterialsInventors: Dong-Soo Kim, Won-Hee Lee, Taek-Min Lee, Doo-Sun Choi, Byung-Oh Choi
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Patent number: 7879536Abstract: Disclosed herein is a method for forming a pattern, comprising: attaching a single-layer or multi-layer dry film resist made of a semi-solid or solid material to part or all of the surface of a substrate; exposing the dry film resist to light either by irradiating a focusable energy beam directly onto the resist or by projecting a specific wavelength range of light onto the resist, to form a region to be filled with a functional material; charging the functional material into the formed region using a method such as inkjetting; drying the functional material; and removing the dry film resist, thus obtaining the desired pattern.Type: GrantFiled: December 19, 2006Date of Patent: February 1, 2011Assignee: Korea Institute of Machinery & MaterialsInventors: Dong-Youn Shin, Dong-Soo Kim, So-Nam Yun, Young-Bog Ham, Byung-Oh Choi
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Publication number: 20100188449Abstract: The present invention provides a printing head for nano patterning including a manifold for accommodating a liquid printing material, a cartridge with an injection chamber communicating with the manifold, and a sample holder for patterning installed outside the injection chamber of the cartridge.Type: ApplicationFiled: March 30, 2010Publication date: July 29, 2010Applicant: KOREA INSTITUTE OF MACHINERY & MATERIALSInventors: Dong-Soo KIM, Won-Hee LEE, Taek-Min LEE, Doo-Sun CHOI, Byung-Oh CHOI
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Publication number: 20100133802Abstract: The present invention relates to a luminous advertisement sheet. The luminous advertisement sheet includes a light-transmitting print sheet having an EL advertisement region formed in at least one area of the print sheet, and a general advertisement region formed in the other area thereof. The EL advertisement region has at least one of a fixed pattern portion in which a transparent electrode layer, an EL layer and a dielectric layer are sequentially laminated and a variable pattern portion in which a transparent electrode layer, an EL layer, a dielectric layer and a plurality of pixel electrode layers are sequentially laminated. The general advertisement region allows general dye printing to be performed therein. The luminous advertisement sheet further includes a pattern electrode layer laminated and printed with a conductive ink material to have a predetermined luminous pattern in at least one area of the dielectric layer laminated in the fixed pattern portion and/or the variable pattern portion.Type: ApplicationFiled: December 5, 2007Publication date: June 3, 2010Applicant: KOREA INSTITUTE OF MACHINERY & MATERIALSInventors: Taik-Min Lee, Dong-Youn Shin, Chung-Hwan Kim, Jeong-Dai Jo, Dong-Soo Kim, Byung-Oh Choi
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Publication number: 20090288567Abstract: The present invention discloses an apparatus for manufacturing electronic devices using a roll-to-roll rotary pressing process, comprising a winding roll around which flexible printing paper is wound; a plurality of printing units arranged in a straight line; at least one coating unit; a rewinding roll to rewind the printing paper when printing has been completed; a plurality of guide rolls arranged between the winding roll and the rewinding roll, thus guiding the printing paper; a plurality of drying units, each drying unit being provided on a printing paper-path between the printing unit and the adjacent guide roll to dry ink transferred to the printing paper or on a printing paper-path between the coating unit and the adjacent guide roll to dry the printing paper on which coating agent is supplied; and tension regulating units installed around the winding roll and the rewinding roll, respectively, for regulating tension of the printing paper.Type: ApplicationFiled: June 1, 2009Publication date: November 26, 2009Applicant: KOREAN INSTITUTE OF MACHINERY & MATERIALSInventors: Byung-Oh CHOI, Byung-Soon RYU, Kyu-Jin LIM, Kwang-Young KIM, Dong-Soo KIM, So-Nam YUN, Young-Bog HAM, Taik-Min LEE, Jeong-Dai JO, Hyun-Eui LIM, Chan-Su YOO