Patents by Inventor Hak-Bum CHOI
Hak-Bum 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: 20230180571Abstract: A display device includes: a display panel and a color converting panel facing each other and having a display area and a peripheral area; and a sealing member therebetween and disposed on an external edge of the peripheral area. The display panel includes a first substrate, light-emitting devices the first substrate, and an encapsulation layer on the light-emitting devices and in the display area and the peripheral area. The color converting panel includes a second substrate, a first color filter, a second color filter, and a third color filter on the second substrate and in the display area and the peripheral area, and a partition wall and a dummy partition wall on the first-third color filters. At least one of the first color filter, the second color filter, and the third color filter has an opening in the peripheral area, and the dummy partition wall overlaps the opening.Type: ApplicationFiled: July 29, 2022Publication date: June 8, 2023Inventor: Hak Bum CHOI
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Patent number: 11618257Abstract: An inkjet printing apparatus includes: a passage plate in which a head chamber is disposed; and a plurality of nozzle plates disposed below the passage plate, the plurality of nozzle plates comprising a nozzle that is in fluid connection with the head chamber. The plurality of nozzle plates are stacked on each other, and the nozzle of the plurality of nozzle plates comprises a plurality of through holes passing through the plurality of nozzle plates and overlapping each other.Type: GrantFiled: March 2, 2021Date of Patent: April 4, 2023Assignee: Samsung Display Co., Ltd.Inventors: Seon Uk Lee, Kang Soo Han, Che Ho Lim, Don Chan Cho, Hak Bum Choi
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Patent number: 11320704Abstract: A display device includes: a first substrate that includes a plurality of first pads arranged in a first direction and a plurality of second pads arranged in parallel with the plurality of first pads; a second substrate that overlaps the first substrate and includes a second substrate including one edge exposing the plurality of first pads and the plurality of second pads; a first flexible printed circuit board that is electrically connected with the plurality of first pads; a second flexible printed circuit board that overlaps the first flexible printed circuit board and is electrically connected with the plurality of second pads; a protective layer that covers the first flexible printed circuit board and the second flexible printed circuit board from one edge of the second substrate to a width including the plurality of first pads and the plurality of second pads; and a blocking portion disposed on the first substrate at a distance from one edge of the second substrate by a width of the protective layer andType: GrantFiled: February 4, 2020Date of Patent: May 3, 2022Inventors: Yoo Jeong Lee, Seung Jae Kang, Po-Yun Park, Hak Bum Choi
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Publication number: 20220024208Abstract: An inkjet printing apparatus includes: a passage plate in which a head chamber is disposed; and a plurality of nozzle plates disposed below the passage plate, the plurality of nozzle plates comprising a nozzle that is in fluid connection with the head chamber. The plurality of nozzle plates are stacked on each other, and the nozzle of the plurality of nozzle plates comprises a plurality of through holes passing through the plurality of nozzle plates and overlapping each other.Type: ApplicationFiled: March 2, 2021Publication date: January 27, 2022Inventors: Seon Uk LEE, Kang Soo Han, Che Ho Lim, Don Chan Cho, Hak Bum Choi
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Publication number: 20210018777Abstract: A display device includes: a first substrate that includes a plurality of first pads arranged in a first direction and a plurality of second pads arranged in parallel with the plurality of first pads; a second substrate that overlaps the first substrate and includes a second substrate including one edge exposing the plurality of first pads and the plurality of second pads; a first flexible printed circuit board that is electrically connected with the plurality of first pads; a second flexible printed circuit board that overlaps the first flexible printed circuit board and is electrically connected with the plurality of second pads; a protective layer that covers the first flexible printed circuit board and the second flexible printed circuit board from one edge of the second substrate to a width including the plurality of first pads and the plurality of second pads; and a blocking portion disposed on the first substrate at a distance from one edge of the second substrate by a width of the protective layer andType: ApplicationFiled: February 4, 2020Publication date: January 21, 2021Inventors: Yoo Jeong LEE, Seung Jae KANG, Po-Yun PARK, Hak Bum CHOI
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Patent number: 9261749Abstract: A display device includes gate lines, data lines, first wires and second wires extending in the directions of the gate lines and data lines, and pixels having a first subpixel and a second subpixel each. The first subpixel has a first subpixel electrode and a first switching element, and the second subpixel has a second subpixel electrode and second and third switching elements. The control terminals of the three switching elements are connected to the same gate line, and the input terminals of the first and second switching elements are connected to the same data line. The first and second switching elements have output terminals connected to the first and second subpixel electrodes, respectively. The second switching element's output terminal connects to the third switching element, which has an output terminal connected to a second wire. The first wires and the second wires are connected in a pixel.Type: GrantFiled: January 7, 2015Date of Patent: February 16, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jae Hwa Park, Jong-In Kim, Yeo Geon Yoon, Min-Wook Park, Jang-Il Kim, Joon-Chul Goh, Hyo-Seop Kim, Bum Ki Baek, Young-Soo Yoon, Hak Bum Choi, Kyung Ho Kim
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Publication number: 20150115275Abstract: A display device includes gate lines, data lines, first wires and second wires extending in the directions of the gate lines and data lines, and pixels having a first subpixel and a second subpixel each. The first subpixel has a first subpixel electrode and a first switching element, and the second subpixel has a second subpixel electrode and second and third switching elements. The control terminals of the three switching elements are connected to the same gate line, and the input terminals of the first and second switching elements are connected to the same data line. The first and second switching elements have output terminals connected to the first and second subpixel electrodes, respectively. The second switching element's output terminal connects to the third switching element, which has an output terminal connected to a second wire. The first wires and the second wires are connected in a pixel.Type: ApplicationFiled: January 7, 2015Publication date: April 30, 2015Inventors: Jae Hwa PARK, Jong-In KIM, Yeo Geon YOON, Min Wook PARK, Jang-Il KIM, Joon-Chul GOH, Hyo-Seop KIM, Bum Ki BAEK, Young-Soo YOON, Hak Bum CHOI, Kyung Ho KIM
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Patent number: 8952878Abstract: A display device includes gate lines, data lines, first wires and second wires extending in the directions of the gate lines and data lines, and pixels having a first subpixel and a second subpixel each. The first subpixel has a first subpixel electrode and a first switching element, and the second subpixel has a second subpixel electrode and second and third switching elements. The control terminals of the three switching elements are connected to the same gate line, and the input terminals of the first and second switching elements are connected to the same data line. The first and second switching elements have output terminals connected to the first and second subpixel electrodes, respectively. The second switching element's output terminal connects to the third switching element, which has an output terminal connected to a second wire. The first wires and the second wires are connected in a pixel.Type: GrantFiled: June 14, 2012Date of Patent: February 10, 2015Assignee: Samsung Display Co., Ltd.Inventors: Jae Hwa Park, Yeo Geon Yoon, Jang-Il Kim, Kyung Ho Kim, Jong-In Kim, Min-Wook Park, Bum Ki Baek, Joon-Chul Goh, Young-Soo Yoon, Hak Bum Choi, Hyo-Seop Kim
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Patent number: 8912991Abstract: A liquid crystal display includes: a first gate line; a first data line crossing the first gate line; a first switching element connected with the first gate line and the first data line; a second switching element connected with the first gate line and the first data line; a first liquid crystal capacitor connected with the first switching element; a second liquid crystal capacitor connected with the second switching element; a boost switching element which is turned on during a time period not overlapping a time period during which the first switching element is turned on; and a boost capacitor including a first terminal connected with the boost switching element and a second terminal connected with the first liquid crystal capacitor.Type: GrantFiled: July 22, 2011Date of Patent: December 16, 2014Assignee: Samsung Display Co., Ltd.Inventors: Jong-In Kim, Min-Wook Park, Eun-Guk Lee, Young-Goo Song, Kyoung-Tai Han, Hyuk-Jin Kim, Hak-Bum Choi, Hyo-Seop Kim
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Publication number: 20130093658Abstract: A display device includes gate lines, data lines, first wires and second wires extending in the directions of the gate lines and data lines, and pixels having a first subpixel and a second subpixel each. The first subpixel has a first subpixel electrode and a first switching element, and the second subpixel has a second subpixel electrode and second and third switching elements. The control terminals of the three switching elements are connected to the same gate line, and the input terminals of the first and second switching elements are connected to the same data line. The first and second switching elements have output terminals connected to the first and second subpixel electrodes, respectively. The second switching element's output terminal connects to the third switching element, which has an output terminal connected to a second wire. The first wires and the second wires are connected in a pixel.Type: ApplicationFiled: June 14, 2012Publication date: April 18, 2013Applicant: SAMSUNG DISPLAY CO., LTD.Inventors: Jae Hwa PARK, Yeo Geon YOON, Jang-Il KIM, Kyung Ho KIM, Jong-In KIM, Min-Wook PARK, Bum Ki BAEK, Joon-Chul GOH, Young-Soo YOON, Hak Bum CHOI, Hyo-Seop KIM
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Publication number: 20120236222Abstract: A liquid crystal display includes: a first gate line; a first data line crossing the first gate line; a first switching element connected with the first gate line and the first data line; a second switching element connected with the first gate line and the first data line; a first liquid crystal capacitor connected with the first switching element; a second liquid crystal capacitor connected with the second switching element; a boost switching element which is turned on during a time period not overlapping a time period during which the first switching element is turned on; and a boost capacitor including a first terminal connected with the boost switching element and a second terminal connected with the first liquid crystal capacitor.Type: ApplicationFiled: July 22, 2011Publication date: September 20, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jong-In KIM, Min-Wook PARK, Eun-Guk LEE, Young-Goo SONG, Kyoung-Tai HAN, Hyuk-Jin KIM, Hak-Bum CHOI, Hyo-Seop KIM