Patents by Inventor Dong-Wan Choi

Dong-Wan 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: 11964044
    Abstract: One aspect of the present disclosure relates to a phase transfer cosmetic composition. According to the present disclosure, there can be provided a cosmetic composition which contains a wax having a melting point of 40 to 60° C. and an inulin-based surfactant, wherein the composition maintains a liquid state before applied to the skin and rubbed, and changes to a solid state when applied to the skin, can solve the problems in terms of hygiene and use because it is not used by scooping it by hand, and further, changes its phase to a solid state when applied to the skin and then rubbed, and thus, can solve the problem of dripping when applied to face or skin.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: April 23, 2024
    Assignee: Amorepacific Corporation
    Inventors: Dong Wan Ha, Yu Jung Kim, Dong Won Choi, Yoon Kyun Hwang
  • 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: 11955888
    Abstract: As inputs of a controller of a direct current (DC)-DC converter are sampled for a predetermined time and thus two-dimensional state information in which one axis is an input physical quantity and the other axis is a time is generated, the two-dimensional state information is processed by a convolutional neural network to determine and output one of a plurality of control signals. An artificial intelligence control part may operate in accordance with a plurality of operation conditions or dynamically determined operation conditions by applying different artificial intelligence engines according to operation modes.
    Type: Grant
    Filed: July 3, 2021
    Date of Patent: April 9, 2024
    Inventors: Kang Yoon Lee, Jong Wan Jo, Min Young Kim, Dong Soo Park, Kyung Duk Choi, Young Gun Pu
  • Patent number: 11956997
    Abstract: A display device according to an exemplary embodiment includes: a substrate including a display area and a transmission area; a metal blocking layer disposed in the display area of the substrate; an inorganic insulating layer disposed on the metal blocking film; a transistor disposed on the inorganic insulating layer; an emission layer connected to the transistor; and a light blocking layer and a color filter disposed on the emission layer of the display area, wherein the edge of the light blocking layer is protruded toward the transmission area more than the edge of the metal blocking layer.
    Type: Grant
    Filed: August 23, 2021
    Date of Patent: April 9, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Se Wan Son, Nak Cho Choi, Moo Soon Ko, Dong Hyun Son, Sang Hoon Oh, Jin Goo Jung, Kyung Hyun Choi, Hae-Yeon Lee, Seong Min Cho
  • Publication number: 20240114709
    Abstract: The quantum dot comprises a ligand which is a copolymer comprising a first repeating unit comprising at least one or more hole transporting functional groups and a second repeating unit comprising at least one or more photocrosslinking functional groups.
    Type: Application
    Filed: September 22, 2020
    Publication date: April 4, 2024
    Applicants: LG DISPLAY CO., LTD., KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
    Inventors: Joona BANG, Ki Seok CHANG, Jeong Min MOON, Soon Shin JUNG, Dong Hoon CHOI, Hyung Jong KIM, Jae Wan KO
  • Publication number: 20230269875
    Abstract: A display device including a display panel, a circuit board connected to the display panel, and a flexible circuit film which connects the display panel to the circuit board, the flexible circuit film being bendable. The circuit board includes an electronic component, a first area at which the circuit board is connected to the flexible circuit film, and a second area which is adjacent to the first area and corresponds to the electronic component. The flexible circuit film which is bent disposes the first area of the circuit board overlapping the display panel, together with both the second area of the circuit board and the electronic component non-overlapping the display panel, along a thickness direction of the display device.
    Type: Application
    Filed: December 5, 2022
    Publication date: August 24, 2023
    Inventors: YOUNG-JOO NAM, Dong Wan CHOI, JOOYOUNG KIM, Hyun Seop SONG
  • Patent number: 11545536
    Abstract: A display apparatus includes a lower substrate including a display area, a peripheral area and a pad area, a display structure disposed in the display area on the lower substrate, an upper substrate disposed on the display structure, a plurality of driving circuits disposed at a side of the pad area on the lower substrate and spaced apart from each other, a plurality of fan-out wires disposed between the plurality of driving circuits and the display structure in the pad area and the peripheral area on the lower substrate and electrically connecting the plurality of driving circuits and the display structure, and a functional module disposed on a bottom surface of the lower substrate. A first opening is formed in the lower substrate and disposed between adjacent ones of the plurality of fan-out wires, and the first opening and the functional module overlap each other.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: January 3, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ji Hye Eom, Dong Wan Choi
  • Publication number: 20210202665
    Abstract: A display apparatus includes a lower substrate including a display area, a peripheral area and a pad area, a display structure disposed in the display area on the lower substrate, an upper substrate disposed on the display structure, a plurality of driving circuits disposed at a side of the pad area on the lower substrate and spaced apart from each other, a plurality of fan-out wires disposed between the plurality of driving circuits and the display structure in the pad area and the peripheral area on the lower substrate and electrically connecting the plurality of driving circuits and the display structure, and a functional module disposed on a bottom surface of the lower substrate. A first opening is formed in the lower substrate and disposed between adjacent ones of the plurality of fan-out wires, and the first opening and the functional module overlap each other.
    Type: Application
    Filed: December 23, 2020
    Publication date: July 1, 2021
    Applicant: Samsung Display Co., LTD.
    Inventors: Ji Hye Eom, Dong Wan Choi
  • Patent number: 10229961
    Abstract: A display device according to an exemplary embodiment of the present inventive concept includes: a substrate; a thin film transistor provided on a first side of the substrate; a first electrode connected with the thin film transistor; an organic emission layer provided on the first electrode and emitting light; a second electrode provided on the organic emission layer; and a light blocking layer contacting the substrate from a second side that faces the first side of the substrate, wherein the light is emitted in a direction toward the second electrode from the organic emission layer.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: March 12, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong Wan Choi, Young Bin Kim
  • Publication number: 20180019293
    Abstract: A display device according to an exemplary embodiment of the present inventive concept includes: a substrate; a thin film transistor provided on a first side of the substrate; a first electrode connected with the thin film transistor; an organic emission layer provided on the first electrode and emitting light; a second electrode provided on the organic emission layer; and a light blocking layer contacting the substrate from a second side that faces the first side of the substrate, wherein the light is emitted in a direction toward the second electrode from the organic emission layer.
    Type: Application
    Filed: March 15, 2017
    Publication date: January 18, 2018
    Inventors: Dong Wan CHOI, Young Bin KIM
  • Patent number: 9691345
    Abstract: A dual-display device includes a flexible substrate comprising first and second surfaces opposing each other, the first surface comprising a first area and a second area, the flexible substrate being bent to allow the first and second areas of the first surface to face each other, the second surface comprising first and second areas opposing the first and second areas of the first surface, respectively. The device further includes a first display unit formed over the first area of the second surface of the bent flexible substrate, and realizing an image; a second display unit formed over second area that is opposite to the first area of the second surface of the bent flexible substrate, electrically connected to the first display unit via lines, and realizing another image; and a common driver unit electrically connected to a pad area that extends from the first display unit, and configured to transmit at least a signal to drive the first display unit and the second display unit.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: June 27, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin-Oh Park, Dong-Wan Choi, Hyo-Sang Yang
  • Patent number: 9263474
    Abstract: A thin film transistor array substrate includes an active area in which a plurality of pixels are formed; driver integrated circuits (DICs) disposed in a non-active area around the active area and configured to supply a driving signal to each of the plurality of pixels; power input units partially overlapping with the DICs, disposed below the DICs, and configured to supply power voltages to the active area; and a user key mounting area formed not to overlap with the DICs in the non-active area. The thin film transistor array substrate may be used for an organic light-emitting display apparatus.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: February 16, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong-Wan Choi, Jin-Oh Park, Hyo-Sang Yang, Hee-Kwon Eun
  • Patent number: 9182784
    Abstract: A double-sided emission type display device includes a first substrate having a first connection and a first protruded portion extending in a first direction; a first display unit at the first substrate; a second substrate coupled to the first substrate, comprising a second connection and a second protruded portion extending in the first direction; a second display unit at the second substrate; and a first flexible printed circuit board (FPCB) including a first connecting portion coupled to the first connection and a second connecting portion coupled to the second connection.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: November 10, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyo-Sang Yang, Jin-Oh Park, Dong-Wan Choi
  • Patent number: 9142153
    Abstract: A two side display device includes: a flexible substrate including a first substrate part, a second substrate part under the first substrate part, and a bending part coupling the first substrate part to the second substrate part; a first display panel on the first substrate part and configured to display a first image in a first direction; a second display panel under the second substrate part and configured to display a second image in a second direction opposite the first direction; and a driving chip coupled to the first substrate part. According to exemplary embodiments, first and second display panels are positioned on the same surface of a flexible substrate and configured to display images in opposing directions by bending the flexible substrate, which may reduce the thickness and manufacturing cost of the two side display device.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: September 22, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin-Oh Park, Dong-Wan Choi, Hyo-Sang Yang
  • Patent number: 9064467
    Abstract: There are provided a liquid crystal display device and a driving method thereof, which can reduce power consumption and improve image quality. A liquid crystal display device includes pixels, a data driver and at least one gate driver. The pixels are positioned at intersection portions of gate lines and data lines. The data driver supplies a data signal having a first or second polarity to the data lines. The at least one gate driver supplies, to the gate lines, a first gate signal corresponding to the first polarity and a second gate signal corresponding to the second polarity.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: June 23, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chang-Jin Im, Dong-Wan Choi, Hee-Kwon Eun
  • Publication number: 20150001478
    Abstract: A thin film transistor array substrate includes an active area in which a plurality of pixels are formed; driver integrated circuits (DICs) disposed in a non-active area around the active area and configured to supply a driving signal to each of the plurality of pixels; power input units partially overlapping with the DICs, disposed below the DICs, and configured to supply power voltages to the active area; and a user key mounting area formed not to overlap with the DICs in the non-active area. The thin film transistor array substrate may be used for an organic light-emitting display apparatus.
    Type: Application
    Filed: October 30, 2013
    Publication date: January 1, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Dong-Wan Choi, Jin-Oh Park, Hyo-Sang Yang, Hee-Kwon Eun
  • Publication number: 20140375597
    Abstract: A thin film transistor array substrate includes: an active area including a plurality of pixels; a driver integrated circuit in a non-active area around the active area and configured to supply a driving signal to the pixels; and a user input key positioned near the driver integrated circuit and configured to receive a user input.
    Type: Application
    Filed: October 31, 2013
    Publication date: December 25, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jin-Oh Park, Dong-Wan Choi, Hyo-Sang Yang, Hee-Kwon Eun
  • Patent number: 8760379
    Abstract: A driving circuit for a display panel comprising a driving voltage generator for outputting a plurality of gamma reference voltages, and a gray scale voltage generating unit for selecting one out of the plurality of gamma reference voltages and generating a gray scale voltage based on the selected gamma reference voltage, a liquid crystal display having the driving circuit, and a method for driving the liquid crystal display. A gamma reference voltage is dynamically changed depending on a user's selection, so that a gray scale voltage is changed, thereby varying the gamma characteristic and the viewing angle of an output image. Accordingly, a user can actively control the gamma characteristic and the viewing angle of an output image to be suitable for a user's preference and environment.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: June 24, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventor: Dong Wan Choi
  • Publication number: 20140139992
    Abstract: A double-sided emission type display device includes a first substrate having a first connection and a first protruded portion extending in a first direction; a first display unit at the first substrate; a second substrate coupled to the first substrate, comprising a second connection and a second protruded portion extending in the first direction; a second display unit at the second substrate; and a first flexible printed circuit board (FPCB) including a first connecting portion coupled to the first connection and a second connecting portion coupled to the second connection.
    Type: Application
    Filed: July 17, 2013
    Publication date: May 22, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyo-Sang Yang, Jin-Oh Park, Dong-Wan Choi
  • Publication number: 20140118325
    Abstract: There are provided a liquid crystal display device and a driving method thereof, which can reduce power consumption and improve image quality. A liquid crystal display device includes pixels, a data driver and at least one gate driver. The pixels are positioned at intersection portions of gate lines and data lines. The data driver supplies a data signal having a first or second polarity to the data lines. The at least one gate driver supplies, to the gate lines, a first gate signal corresponding to the first polarity and a second gate signal corresponding to the second polarity.
    Type: Application
    Filed: August 22, 2013
    Publication date: May 1, 2014
    Inventors: Chang-Jin Im, Dong-Wan Choi, Hee-Kwon Eun