Patents by Inventor Hyun-Min Hwang

Hyun-Min Hwang 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).

  • Publication number: 20230277425
    Abstract: Provided in the present disclosure is a composition comprising hydroquinone or a derivative thereof as an active ingredient, and characterized in that the hydroquinone or the derivative thereof is stabilized by means of poloxamer. The composition of the present disclosure increases the soluble concentration of the hydroquinone or the derivative thereof, can have high melt stability without precipitation even at high concentration in water, can enhance storage stability by preventing oxidation reaction to external stimulations such as heat, oxygen and light, can prevent discoloration, and thus has reduced toxicity induced by an oxidation product of the hydroquinone and can reduce inflammatory response. Also, the composition of the present disclosure can enhance whitening efficacy by enhancing the skin permeability of the hydroquinone or the derivative thereof by means of micelles, and thus is useful for a whitening activity having hydroquinone or a derivative thereof as an active ingredient.
    Type: Application
    Filed: June 18, 2021
    Publication date: September 7, 2023
    Applicants: LG HOUSEHOLD & HEALTH CARE LTD., TAI GUK PHARM. IND. CO., LTD.
    Inventors: Mi-Na KIM, Seung-Hyun JUN, Hyun-Min HWANG, Na-Eun YOOK, Mun-Ju SHIN, Seo-Hun ROH
  • Publication number: 20230125049
    Abstract: A bulk acoustic wave filter includes series resonators connected to a series arm, and parallel resonators connected to a parallel arm connected to the series arm. Two or more of the series resonators are disposed in parallel on the series arm, and each includes a substrate, a lower electrode on the substrate, a piezoelectric layer on the lower electrode, and an upper electrode on the piezoelectric layer, wherein, when an active region in which the lower electrode, the piezoelectric layer, and the upper electrode overlap each other is viewed from above, a centroid of the active region and a center of a rectangle defining an aspect ratio of the active region match each other, and when the active region is viewed from above, the active region has a shape of polygon symmetrical with respect to at least one axis passing through a center of the rectangle defining the aspect ratio.
    Type: Application
    Filed: February 18, 2022
    Publication date: April 20, 2023
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Hyun Min HWANG, Won HAN, Jeong Hoon RYOU, Jae Hyoung GIL, Dong Hoe KIM
  • Publication number: 20230107650
    Abstract: A bulk acoustic resonator filter includes a series part including at least one series acoustic resonator electrically connected between a first and second radio frequency ports; and shunt acoustic resonators electrically connected to each other in series between a first node of the series part and a first ground port, wherein each of the shunt acoustic resonators comprises a resonance portion including a first electrode, a piezoelectric layer, and a second electrode; and an overlap region in which the first electrode, the piezoelectric layer, and the second electrode overlap, the overlap region has an aspect ratio equal to a ratio between a longest length of the overlap region in an extension direction of a longest side of the overlap region and a longest length of the overlap region in a direction perpendicular to the extension direction, and the aspect ratios of the shunt acoustic resonators include different aspect ratios.
    Type: Application
    Filed: June 27, 2022
    Publication date: April 6, 2023
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Hyun Min HWANG, Jeong Hoon RYOU, Jae Goon AUM, Dong Hoe KIM
  • Patent number: 11552272
    Abstract: A display panel includes: first and second substrates, each including a display area and a peripheral area in a plan view; and a sealing portion disposed between the first and second substrates. An edge of the display panel includes straight-lined and shaped edges, and the shaped edge includes a curved portion. An edge surface of the first substrate at the straight-lined edge, an edge surface of the second substrate at the straight-lined edge and an edge surface of the sealing portion at the straight-lined edge collectively define a first convex surface, an edge surface of the first substrate at the shaped edge, an edge surface of the second substrate at the shaped edge and an edge surface of the sealing portion at the shaped edge collectively define a second convex surface, and shapes of the first and second convex surfaces are different from each other.
    Type: Grant
    Filed: March 1, 2021
    Date of Patent: January 10, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Young Min Kim, Yong-Jun Park, Ja Woon Lee, Hyun Min Hwang
  • Publication number: 20220286112
    Abstract: An acoustic resonator filter includes a series portion of the acoustic resonator filter, the series portion including at least one series acoustic resonator electrically connected, in series, between first and second ports of the acoustic resonator filter configured to pass a radio-frequency (RF) signal from the first port to the second port, and a shunt portion of the acoustic resonator filter, the shunt portion including a plurality of shunt acoustic resonators electrically connected between one node of the series portion and a ground, where a difference between anti-resonant frequencies of each of the plurality of shunt acoustic resonators is smaller than a difference between resonant frequencies of each of the plurality of shunt acoustic resonators.
    Type: Application
    Filed: September 16, 2021
    Publication date: September 8, 2022
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventor: Hyun Min HWANG
  • Publication number: 20220286111
    Abstract: An acoustic resonator filter includes a series portion including at least one series acoustic resonator electrically connected, in series, between first and second ports of the acoustic resonator filter configured to pass a radio-frequency (RF) signal from the first port to the second port, a shunt portion including a plurality of shunt acoustic resonators electrically connected to each other, in anti-series, between one node of the series portion and a ground, and a DC voltage terminal configured to generate a DC voltage across at least one of the plurality of shunt acoustic resonators by an electrical connection of the DC voltage terminal to a first electrode of the at least one of the plurality of shunt acoustic resonators and to a different second electrode of the at least one of the plurality of shunt acoustic resonators. A DC voltage may be generated across the at least one series acoustic resonator.
    Type: Application
    Filed: September 16, 2021
    Publication date: September 8, 2022
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventor: Hyun Min HWANG
  • Publication number: 20210184163
    Abstract: A display panel includes: first and second substrates, each including a display area and a peripheral area in a plan view; and a sealing portion disposed between the first and second substrates. An edge of the display panel includes straight-lined and shaped edges, and the shaped edge includes a curved portion. An edge surface of the first substrate at the straight-lined edge, an edge surface of the second substrate at the straight-lined edge and an edge surface of the sealing portion at the straight-lined edge collectively define a first convex surface, an edge surface of the first substrate at the shaped edge, an edge surface of the second substrate at the shaped edge and an edge surface of the sealing portion at the shaped edge collectively define a second convex surface, and shapes of the first and second convex surfaces are different from each other.
    Type: Application
    Filed: March 1, 2021
    Publication date: June 17, 2021
    Inventors: Young Min KIM, Yong-Jun PARK, Ja Woon LEE, Hyun Min HWANG
  • Patent number: 11018317
    Abstract: An organic light-emitting display apparatus includes a first substrate, a display unit defining an active area on the first substrate and including an insulating layer, a second substrate on the display unit, one or more signal lines outside the active area and on the insulating layer, and a sealant between the first substrate and the second substrate. The sealant bonds the first substrate and the second substrate, and covers at least a portion of the signal lines.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: May 25, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang-Min Hong, Hyun-Min Hwang, Hyun-Young Kim, Eun-Jae Na
  • Publication number: 20210151531
    Abstract: A display apparatus includes a base substrate including a hole area through which light passes, a hole peripheral area which is a non-display area surrounding the hole area, and a display area surrounding the hole peripheral area, where the display area includes pixels to display an image, an insulating layer disposed on the base substrate in the hole peripheral area and the display area except for the hole area, a via insulating layer disposed on the insulating layer in the hole peripheral area and the display area except for the hole area, and a thin film encapsulation layer including first and second inorganic films which are disposed in the hole peripheral area and the display area except for the hole area on the base substrate on which the via insulating layer is disposed.
    Type: Application
    Filed: November 17, 2020
    Publication date: May 20, 2021
    Inventors: Won Je JO, Young Ji KIM, Yi Seul UM, Young Hoon LEE, Seong Geun WON, Young Seo CHOI, Hyun Min HWANG
  • Patent number: 10971699
    Abstract: A display panel includes: first and second substrates, each including a display area and a peripheral area in a plan view; and a sealing portion disposed between the first and second substrates. An edge of the display panel includes straight-lined and shaped edges, and the shaped edge includes a curved portion. An edge surface of the first substrate at the straight-lined edge, an edge surface of the second substrate at the straight-lined edge and an edge surface of the sealing portion at the straight-lined edge collectively define a first convex surface, an edge surface of the first substrate at the shaped edge, an edge surface of the second substrate at the shaped edge and an edge surface of the sealing portion at the shaped edge collectively define a second convex surface, and shapes of the first and second convex surfaces are different from each other.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: April 6, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Young Min Kim, Yong-Jun Park, Ja Woon Lee, Hyun Min Hwang
  • Patent number: 10903447
    Abstract: A display device is provided. The display device includes a display panel including first and second display substrates that face each other, having an overlap area in which the first and second display substrates overlap with each other, and having a protruding area on one side of the overlap area, a sealing member between the first and second display substrates along edges of the overlap area, and at least one chamfered portion including a first chamfered portion, which is formed on at least one side of the protruding area, and a second chamfered portion, which is formed on the overlap area and adjacent to the first chamfered portion, wherein in the second chamfered portion, an end of the first display substrate is positioned beyond an end of the second display substrate.
    Type: Grant
    Filed: July 30, 2020
    Date of Patent: January 26, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun Min Hwang, Yong Kyu Jang, Jae Kyung Go, Dong Jo Kim, Young Min Kim, Chan Young Park, Dong Won Han
  • Publication number: 20200358028
    Abstract: A display device is provided. The display device includes a display panel including first and second display substrates that face each other, having an overlap area in which the first and second display substrates overlap with each other, and having a protruding area on one side of the overlap area, a sealing member between the first and second display substrates along edges of the overlap area, and at least one chamfered portion including a first chamfered portion, which is formed on at least one side of the protruding area, and a second chamfered portion, which is formed on the overlap area and adjacent to the first chamfered portion, wherein in the second chamfered portion, an end of the first display substrate is positioned beyond an end of the second display substrate.
    Type: Application
    Filed: July 30, 2020
    Publication date: November 12, 2020
    Inventors: Hyun Min Hwang, Yong Kyu Jang, Jae Kyung Go, Dong Jo Kim, Young Min Kim, Chan Young Park, Dong Won Han
  • Patent number: 10734604
    Abstract: A display device is provided. The display device includes a display panel including first and second display substrates that face each other, having an overlap area in which the first and second display substrates overlap with each other, and having a protruding area on one side of the overlap area, a sealing member between the first and second display substrates along edges of the overlap area, and at least one chamfered portion including a first chamfered portion, which is formed on at least one side of the protruding area, and a second chamfered portion, which is formed on the overlap area and adjacent to the first chamfered portion, wherein in the second chamfered portion, an end of the first display substrate is positioned beyond an end of the second display substrate.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: August 4, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun Min Hwang, Yong Kyu Jang, Jae Kyung Go, Dong Jo Kim, Young Min Kim, Chan Young Park, Dong Won Han
  • Publication number: 20200152909
    Abstract: A display device is provided. The display device includes a display panel including first and second display substrates that face each other, having an overlap area in which the first and second display substrates overlap with each other, and having a protruding area on one side of the overlap area, a sealing member between the first and second display substrates along edges of the overlap area, and at least one chamfered portion including a first chamfered portion, which is formed on at least one side of the protruding area, and a second chamfered portion, which is formed on the overlap area and adjacent to the first chamfered portion, wherein in the second chamfered portion, an end of the first display substrate is positioned beyond an end of the second display substrate.
    Type: Application
    Filed: January 17, 2020
    Publication date: May 14, 2020
    Inventors: Hyun Min Hwang, Yong Kyu Jang, Jae Kyung Go, Dong Jo Kim, Young Min Kim, Chan Young Park, Dong Won Han
  • Patent number: 10547024
    Abstract: A display device is provided. The display device includes a display panel including first and second display substrates that face each other, having an overlap area in which the first and second display substrates overlap with each other, and having a protruding area on one side of the overlap area, a sealing member between the first and second display substrates along edges of the overlap area, and at least one chamfered portion including a first chamfered portion, which is formed on at least one side of the protruding area, and a second chamfered portion, which is formed on the overlap area and adjacent to the first chamfered portion, wherein in the second chamfered portion, an end of the first display substrate is positioned beyond an end of the second display substrate.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: January 28, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun Min Hwang, Yong Kyu Jang, Jae Kyung Go, Dong Jo Kim, Young Min Kim, Chan Young Park, Dong Won Han
  • Patent number: 10541669
    Abstract: A bulk acoustic resonator may include a substrate; a resonating portion including a first electrode layer, a piezoelectric layer, and a second electrode layer which are sequentially stacked on the substrate, and partitioned into an active region and a non-active region; and a frame electrode layer including frame electrodes disposed within the active region to be spaced apart from each other along an outer circumference portion of the active region.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: January 21, 2020
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Tae Kyung Lee, Hwa Sun Lee, Hyun Min Hwang, Moon Chul Lee, Sung Sun Kim, Tae Yoon Kim
  • Patent number: 10541665
    Abstract: A bulk acoustic wave (BAW) resonator includes: a substrate; a first BAW resonator including a first air cavity disposed in the substrate, and further including a first electrode, a first piezoelectric layer, and a second electrode stacked on the first air cavity; a second BAW resonator including a second air cavity disposed in the substrate, and further including a first electrode, a second piezoelectric layer, and a second electrode stacked on the second air cavity, wherein the second BAW resonator is connected in parallel to the first BAW resonator and has polarities that are opposite of polarities of the first BAW resonator; and a compensation capacitor circuit connected between the first BAW resonator and the second BAW resonator.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: January 21, 2020
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Moon Chul Lee, Tah Joon Park, Jae Chang Lee, Tae Yoon Kim, Chang Hyun Lim, Hwa Sun Lee, Tae Hun Lee, Hyun Min Hwang, Tae Kyung Lee
  • Publication number: 20190341578
    Abstract: An organic light-emitting display apparatus includes a first substrate, a display unit defining an active area on the first substrate and including an insulating layer, a second substrate on the display unit, one or more signal lines outside the active area and on the insulating layer, and a sealant between the first substrate and the second substrate. The sealant bonds the first substrate and the second substrate, and covers at least a portion of the signal lines.
    Type: Application
    Filed: July 16, 2019
    Publication date: November 7, 2019
    Inventors: Sang-Min Hong, Hyun-Min Hwang, Hyun-Young Kim, Eun-Jae Na
  • Patent number: 10381593
    Abstract: An organic light-emitting display apparatus includes a first substrate, a display unit defining an active area on the first substrate and including an insulating layer, a second substrate on the display unit, one or more signal lines outside the active area and on the insulating layer, and a sealant between the first substrate and the second substrate. The sealant bonds the first substrate and the second substrate, and covers at least a portion of the signal lines.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: August 13, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang-Min Hong, Hyun-Min Hwang, Hyun-Young Kim, Eun-Jae Na
  • Patent number: 10326103
    Abstract: A display device includes a first substrate having a display area and a non-display area around the display area, a seal pattern in the non-display area and offset from the display area, and one or more buffer patterns between the seal pattern and the display area and having a viscosity of 5000 cps to 50000 cps.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: June 18, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Min Jun Jo, Yong Seung Park, Ja Woon Lee, Jae Kyung Go, Chang Woo Shim, Hyun Min Hwang