Patents by Inventor Seung Tae Choi

Seung Tae 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).

  • Patent number: 11961775
    Abstract: In one example, a semiconductor device can comprise a substrate, a device stack, first and second internal interconnects, and an encapsulant. The substrate can comprise a first and second substrate sides opposite each other, a substrate outer sidewall between the first substrate side and the second substrate side, and a substrate inner sidewall defining a cavity between the first substrate side and the second substrate side. The device stack can be in the cavity and can comprise a first electronic device, and a second electronic device stacked on the first electronic device. The first internal interconnect can be coupled to the substrate and the device stack. The encapsulant can cover the substrate inner sidewall and the device stack and can fill the cavity. Other examples and related methods are disclosed herein.
    Type: Grant
    Filed: November 8, 2022
    Date of Patent: April 16, 2024
    Assignee: Amkor Technology Singapore Holding Pte. Ltd.
    Inventors: Gyu Wan Han, Won Bae Bang, Ju Hyung Lee, Min Hwa Chang, Dong Joo Park, Jin Young Khim, Jae Yun Kim, Se Hwan Hong, Seung Jae Yu, Shaun Bowers, Gi Tae Lim, Byoung Woo Cho, Myung Jea Choi, Seul Bee Lee, Sang Goo Kang, Kyung Rok Park
  • Patent number: 11951130
    Abstract: The present invention relates to an antigen-binding molecule comprising a heavy chain variable region comprising a heavy-chain complementarity-determining region 1 (HCDR1) comprising an amino acid sequence represented by Sequence No. 1, an HCDR2 comprising an amino acid sequence represented by Sequence No. 2, and an HCDR3 comprising an amino acid sequence represented by Sequence No. 3; a light-chain variable region comprising a light-chain complementarity-determining region 1 (LCDR1) comprising an amino acid sequence represented by Sequence No. 4, an LCDR2 comprising an amino acid sequence represented by Sequence No. 5, and an LCDR3 comprising an amino acid sequence represented by Sequence No. 6; wherein the antigen-binding molecule is a T cell receptor (TCR); and to a cell line expressing the same.
    Type: Grant
    Filed: March 1, 2021
    Date of Patent: April 9, 2024
    Assignee: Eutilex Co., Ltd.
    Inventors: Byoung S. Kwon, Young Ho Kim, Kwang Hee Kim, Ji Won Chung, Young Gyoon Chang, Bo Rim Yi, Jung Yun Lee, Seung Hyun Lee, Sun Woo Im, Jin Kyung Choi, Hyun Tae Son, Eun Hye Yoo
  • Publication number: 20240090318
    Abstract: The present invention relates to a novel heterocyclic compound usable in an organic light-emitting device and to an organic light-emitting device comprising same, wherein [chemical formula A] is as described in the detailed description of the invention.
    Type: Application
    Filed: December 28, 2021
    Publication date: March 14, 2024
    Inventors: Se-Jin LEE, Seok-Bae PARK, Si-In KIM, Hee-Dae KIM, Yeong-Tae CHOI, Ji-Yung KIM, Kyung-Tae KIM, Myeong-Jun KIM, Kyeong-hyeon KIM, Seung-soo LEE, Tae Gyun LEE, Joon-Ho KIM
  • Patent number: 11620881
    Abstract: Provided are a haptic feedback fiber body, a haptic feedback fabric, and a wearable device. The haptic feedback fiber body can include a core fiber having a first electrode to surround the outer surface thereof, and a vibrating fiber, provided so as to intermittently contact the outer surface of the core fiber, including a second electrode on the inner surface thereof, wherein a piezoelectric polymer is provided on the outer surface of the first electrode or on the inner surface of the second electrode to generate fretting vibrations when the polymer is in close contact with the first electrode or the second electrode on which the piezoelectric polymer is disposed opposite to each other.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: April 4, 2023
    Assignee: CHUNGANG UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventor: Seung Tae Choi
  • Patent number: 10963057
    Abstract: Provided is a haptic feedback button, which includes: a substrate; a lower electrode provided on an upper portion of the substrate, and formed by patterning a ground electrode and a touch sensing electrode; an upper electrode, provided above the lower electrode with an interval from the lower electrode, to which a driving voltage is applied; and a cover provided on an upper portion of the upper electrode, wherein a piezoelectric polymer is provided on an upper portion of the lower electrode or a lower portion of the upper electrode so that fretting vibration may be generated when the piezoelectric polymer is in close contact with the lower electrode or the upper electrode that are disposed to face each other.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: March 30, 2021
    Assignee: CHUNGANG UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventor: Seung Tae Choi
  • Publication number: 20200235283
    Abstract: The present invention relates to compositions obtained by mixing specific electroactive fluoro-terpolymers and specific electroactive fluorinated copolymers. The invention also concerns liquid formulations (inks) that can be used through conventional processing technologies for printed electronics and microelectronics in a safe environment, based on these compositions. Another aspect of this invention are the films manufactured using these formulations, and the devices comprising at least one layer of these films.
    Type: Application
    Filed: July 19, 2018
    Publication date: July 23, 2020
    Applicant: ARKEMA FRANCE
    Inventors: Fabrice DOMINGUES DOS SANTOS, Seung Tae CHOI, Hung Viet TRAN
  • Publication number: 20190392688
    Abstract: Provided are a haptic feedback fiber body, a haptic feedback fabric, and a wearable device. The haptic feedback fiber body can include a core fiber having a first electrode to surround the outer surface thereof; and a vibrating fiber, provided so as to intermittently contact the outer surface of the core fiber, including a second electrode on the inner surface thereof, wherein a piezoelectric polymer is provided on the outer surface of the first electrode or on the inner surface of the second electrode to generate fretting vibrations when the polymer is in close contact with the first electrode or the second electrode on which the piezoelectric polymer is disposed opposite to each other.
    Type: Application
    Filed: January 26, 2018
    Publication date: December 26, 2019
    Inventor: Seung Tae CHOI
  • Publication number: 20190361531
    Abstract: Provided is a haptic feedback button, which includes: a substrate; a lower electrode provided on an upper portion of the substrate, and formed by patterning a ground electrode and a touch sensing electrode; an upper electrode, provided above the lower electrode with an interval from the lower electrode, to which a driving voltage is applied; and a cover provided on an upper portion of the upper electrode, wherein a piezoelectric polymer is provided on an upper portion of the lower electrode or a lower portion of the upper electrode so that fretting vibration may be generated when the piezoelectric polymer is in close contact with the lower electrode or the upper electrode that are disposed to face each other.
    Type: Application
    Filed: January 26, 2018
    Publication date: November 28, 2019
    Inventor: Seung Tae CHOI
  • Patent number: 9434801
    Abstract: Provided are a polymer and a polymer actuator including the polymer. The polymer is cross-linked by a cross-linking agent. When the polymer is used in the polymer actuator, the polymer actuator shows a high strain and may be stably operated at high temperatures.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: September 6, 2016
    Assignees: SAMSUNG ELECTRONICS CO., LTD., SUNGKYUNKWAN UNIVERSITY FOUNDATION FOR CORPORATE COLLABORATION
    Inventors: Seung-Tae Choi, Young-kwan Lee, Ja-Choon Koo, Jong-oh Kwon, Su-jin Park
  • Publication number: 20160018893
    Abstract: The present invention relates to a haptic feedback screen using a piezoelectric polymer. The present invention provides a haptic feedback screen using a piezoelectric polymer, which comprises: a piezoelectric polymer layer made of a transparent piezoelectric polymer material; an upper electrode and a lower electrode disposed on an upper surface of and under a lower surface of the piezoelectric polymer layer, respectively, the upper electrode and the lower electrode being made of a transparent material; a transparent cover disposed on the upper electrode; and a transparent substrate disposed under the lower electrode, wherein the piezoelectric polymer layer generates vibration in a touch area by a power applied between the upper electrode and the lower electrode when a touch occurs on the transparent cover. The present invention can implement an overall or partial haptic feedback function by applying a transparent piezoelectric polymer material to a touch screen.
    Type: Application
    Filed: February 27, 2014
    Publication date: January 21, 2016
    Inventors: Seung Tae CHOI, Woo Eon JU, Cheon Ho PARK, Yong Ju MOON
  • Publication number: 20150322220
    Abstract: A method of manufacturing a highly crystalline film includes filtering a solution to remove particles having a set size or greater, forming a PVDF-based polymer film, stretching a PVDF-based polymer film, and annealing the PVDF-based polymer film.
    Type: Application
    Filed: May 12, 2015
    Publication date: November 12, 2015
    Inventors: Seung Tae CHOI, Cheon Ho PARK, Yong Ju MOON
  • Publication number: 20150325228
    Abstract: An ultrasound transducer includes a highly crystalline film, an upper electrode, a lower electrode, a first low melting point polymer film disposed between the highly crystalline film and the upper electrode, and a second low melting point polymer film disposed between the highly crystalline film and the lower electrode.
    Type: Application
    Filed: May 12, 2015
    Publication date: November 12, 2015
    Inventors: Seung Tae CHOI, Cheon Ho PARK, Yong Ju MOON
  • Patent number: 9030751
    Abstract: A vari-focal fluidic lens is provided. The fluidic lens includes a frame, an first membrane, a second membrane, and an optical fluid. The frame defines an inner space of the fluidic lens including a driving portion and a lens portion that are connected to each other. The elastic membrane is attached to one side of the frame to cover at least the lens portion. The second membrane is attached to an opposite side of the frame to cover at least the driving portion and is deformable in response to temperature change to vary a volume of the inner space. Optical fluid is contained in the inner space.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: May 12, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seung-Tae Choi, Min-Seog Choi, Eun-Sung Lee, Kyu-Dong Jung
  • Patent number: 8970513
    Abstract: A touch panel is provided. The touch panel includes an electroactive polymer (EAP) actuator which is deformable when protruded or depressed locally at a part to which a driving voltage is applied; and a flexible touch sensor which is disposed on the EAP actuator. The flexible touch sensor is deformable locally in correspondence with a deformation of the EAP actuator, and senses an input according to a contact or pressing operation.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: March 3, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-oh Kwon, Seung-Tae Choi, Seong-Taek Lim
  • Patent number: 8959761
    Abstract: A method of manufacturing a polymer electrode is provided. The method includes adhering a shadow mask onto a substrate, forming a hydrophilic electrode pattern on the substrate, coating the hydrophilic electrode pattern of the substrate with a conductive polymer water solution, removing the shadow mask, and drying the conductive polymer water solution, thus forming the polymer electrode.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: February 24, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyu-dong Jung, Seung-Tae Choi
  • Patent number: 8902509
    Abstract: A varifocal lens structure, a method of manufacturing the varifocal lens structure, an optical lens module, and a method of manufacturing the optical lens module. The varifocal lens structure includes a liquid lens unit including a silicone membrane that includes a first silicone elastomer, a polymer actuator disposed on an upper surface of the silicone membrane, and an adhesive silicone layer that is disposed between the silicone membrane and the polymer actuator and includes a second silicone elastomer.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: December 2, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong-yub Lee, Seung-tae Choi, Seung-wan Lee
  • Publication number: 20140001924
    Abstract: Provided are a polymer and a polymer actuator including the polymer. The polymer is cross-linked by a cross-linking agent. When the polymer is used in the polymer actuator, the polymer actuator shows a high strain and may be stably operated at high temperatures.
    Type: Application
    Filed: September 4, 2013
    Publication date: January 2, 2014
    Applicants: SUNGKYUNKWAN UNIVERSITY FOUNDATION FOR CORPORATE COLLABORATION, SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seung-Tae CHOI, Young-kwan LEE, Ja-Choon KOO, Jong-oh KWON, Su-jin PARK
  • Patent number: 8599490
    Abstract: A variable-focus liquid lens is provided. The liquid lens includes a membrane and a fluid. The membrane is made of a transparent elastomer, and the fluid fills a predetermined space to contact at least a lens surface of the membrane. The membrane and the fluid are respectively made of materials repulsive to each other, for example, hydrophilic and hydrophobic materials or oleophilic and oleophobic materials. Accordingly, a repulsive force between the fluid and the membrane can prevent the absorption or leaking of the fluid into/through the membrane.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: December 3, 2013
    Assignees: Samsung Electronics Co., Ltd., Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Jeong-yub Lee, Cheol-min Park, Seung-tae Choi, Seung-wan Lee, Jong-oh Kwon, Hee-joon Jung
  • Patent number: 8592231
    Abstract: An LED package includes a substrate having an electrically conductive portion and an electrically non-conductive portion composed of an oxide of the conductive portion; an LED mounted on the conductive portion and electrically connected to the conductive portion; a first electrode disposed on the non-conductive portion and electrically connected to the LED by a wire; and a second electrode disposed on the substrate and electrically connected to the LED.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: November 26, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Su-ho Shin, Soon-cheol Kweon, Kyu-ho Shin, Ki-hwan Kwon, Seung-tae Choi, Chang-youl Moon
  • Patent number: 8564181
    Abstract: A multilayered electroactive polymer (EAP) device and a method of manufacturing the same is provided. The multilayered EAP device includes a plurality of unit layers. Each unit layer includes an EAP layer formed of an electroactive polymer (EAP), a protecting layer configured to prevent a material from penetrating into the EAP layer, and an active electrode formed using a conductive material. The protecting layer may be formed below the active layer or above the active layer. The active electrode may be interposed between two protecting layers.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: October 22, 2013
    Assignees: Samsung Electronics Co., Ltd., Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Seung-Tae Choi, Jong-Oh Kwon, Youn-Jung Park, Cheol-Min Park, Yeon-Sik Choi