Patents by Inventor Chi Wook An

Chi Wook An 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: 20240079584
    Abstract: The present disclosure discloses a positive electrode active material for a lithium secondary battery comprising a secondary particle having an average particle size (D50) of 1 to 15 ?m, formed by agglomeration of at least two primary macro particles having an average particle size (D50) of 0.1 to 3 ?m; and a coating layer of a lithium-metal oxide on a surface of the secondary particle, wherein the primary macro particles are represented by LiaNi1-x-yCoxM1yM2wO2 (1.0?a?1.5, 0?x?0.2, 0?y?0.2, 0?w?0.1, 0?x+y?0.2, M1 includes at least one metal of Mn or Al, and M2 includes at least one metal selected from the group consisting of Ba, Ca, Zr, Ti, Mg, Ta, Nb and Mo), and wherein the lithium-metal oxide is a low-temperature phase LixCoO2(0<x?1) having at least one of a spinel structure (Fd-3m) or a disordered rock-salt structure (Fm-3m).
    Type: Application
    Filed: February 7, 2022
    Publication date: March 7, 2024
    Applicant: LG Energy Solution, Ltd.
    Inventors: Jong-Wook Heo, Ji-Hye Kim, Tae-Gu Yoo, Wang-Mo Jung, Hae-Jung Jung, Chi-Ho Jo
  • Patent number: 11895864
    Abstract: A display device according to embodiments includes: a display panel that includes a display area that includes a partition layer that includes a first opening through which light is emitted from an organic light emitting diode and a peripheral area around the display area; a touch electrode disposed on the display panel; a touch electrode passivation layer that covers the touch electrode and includes a second opening that corresponds to the first opening; and a high refractive index layer that covers the touch electrode passivation layer and the second opening. The touch electrode passivation layer includes an open region formed in a portion that corresponds to the peripheral area, and the touch electrode passivation layer is not formed in the open region.
    Type: Grant
    Filed: May 23, 2022
    Date of Patent: February 6, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Soon Il Jung, Chi Wook An, Hae Young Yun, Jung-Hyun Cho
  • Publication number: 20240040890
    Abstract: A display device includes pixel electrodes disposed on a substrate; a pixel defining layer disposed on the pixel electrodes that include pixel openings overlapping the pixel electrodes in a plan view, respectively; an encapsulation layer disposed on the pixel electrodes and the pixel defining layer; a sensing electrode disposed on the encapsulation layer; a first insulating layer disposed on the sensing electrode that has openings overlapping the pixel openings in a plan view, respectively; and a second insulating layer disposed on the first insulating layer that has a higher refractive index than a refractive index of the first insulating layer, and each of the openings of the first insulating layer includes at least one protruding extension, and protruding directions of the at least one protruding extension formed in each of the openings include at least eight directions.
    Type: Application
    Filed: March 23, 2023
    Publication date: February 1, 2024
    Applicant: Samsung Display Co., LTD.
    Inventors: Jung-Hyun CHO, Gun Woo KO, Chi Wook AN, Beohm Rock CHOI
  • Publication number: 20240008338
    Abstract: A display device includes a substrate, a pixel electrode disposed on the substrate, a bank layer which is disposed on the pixel electrode and in which a pixel opening overlapping the pixel electrode is defined, an encapsulation layer disposed on the pixel electrode and the bank layer, a sensing electrode disposed on the encapsulation layer, a first insulating layer which is disposed on the sensing electrode and in which an opening overlapping the pixel opening is defined, and a second insulating layer disposed on the first insulating layer and having a higher refractive index than a refractive index of the first insulating layer. The opening of the first insulating layer includes a first edge and a second edge separated from an edge of the pixel opening and extending in different directions from each other and a first extension part disposed at a portion where the first edge and the second edge meet.
    Type: Application
    Filed: March 16, 2023
    Publication date: January 4, 2024
    Inventors: Jung-Hyun CHO, Kang Wook HEO, Chi Wook AN, Won Hak CHOI
  • Publication number: 20230422558
    Abstract: An emissive display device includes: a substrate; a transistor disposed on the substrate; a first electrode electrically connected to the transistor; a pixel defining layer disposed on the first electrode and including a pixel opening overlapping the first electrode; an emission layer overlapping the first electrode and disposed in the pixel opening; a second electrode disposed on the pixel defining layer and the emission layer; an encapsulation layer disposed on the second electrode; a first organic layer disposed on the encapsulation layer and including a rotation opening; and a second organic layer disposed inside of the rotation opening and on the first organic layer. The rotation opening has a planar shape formed by increasing a planar shape of the pixel opening by a ratio and rotating the planar shape of the pixel opening by an angle in a direction.
    Type: Application
    Filed: March 23, 2023
    Publication date: December 28, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Chi Wook AN, Jung-Hyun CHO
  • Publication number: 20230354679
    Abstract: A light emitting display device and its manufacturing method are presented. The device includes: a substrate; a pixel circuit unit positioned on the substrate; a light emitting diode (LED) electrically connected to the pixel circuit unit; an encapsulation layer covering the pixel circuit unit and the light emitting diode (LED); a light blocking layer disposed on the encapsulation layer and having a first opening, a second opening, and a third opening; a first color filter including a main part in the first opening and an overlapping part connecting adjacent main parts and covering the light blocking layer; a second color filter in the second opening; and a third color filter in the third opening.
    Type: Application
    Filed: January 6, 2022
    Publication date: November 2, 2023
    Inventors: Hyeon Bum LEE, Hye Kyung PARK, Chi Wook AN, Hyun Duck CHO
  • Publication number: 20230298536
    Abstract: A display device includes a substrate, a pixel emitting light, a light blocking layer blocking light, a first pixel row comprising a first pixel group and a second pixel group in a first direction in a plan view, and a second pixel row in a second direction that intersects the first direction and comprising a third pixel group and a fourth pixel group in the first direction. The first pixel group includes a first sub-pixel, a second sub-pixel in a third direction from the first sub-pixel, the third direction intersecting the first direction, and a third sub-pixel in the first direction from the first sub-pixel. The third pixel group may include a sixth sub-pixel, a seventh sub-pixel in the third direction from the sixth sub-pixel, and an eighth sub-pixel in the first direction from the sixth sub-pixel. The third pixel group may be surrounded by the light blocking layer.
    Type: Application
    Filed: November 7, 2022
    Publication date: September 21, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Chang Wook KIM, Chi Wook AN, Gun Woo KO, Soon Il JUNG, Mi Ran JI
  • Patent number: 11693502
    Abstract: A display device including: a display panel including first and second pixels a substrate; and a touch sensor on the display panel, wherein the touch sensor includes: sensor patterns on the display panel; bridge patterns connected to the sensor patterns; a first light blocking pattern on the sensor patterns, wherein the first light blocking pattern is provided for each of the first pixels, the first light blocking pattern including a first opening corresponding to an emission area of each of the first pixels; and a second light blocking pattern located under the first light blocking pattern, wherein the second light blocking pattern is provided for each of the first pixels, the second light blocking pattern including a second opening to correspond to the emission area of each of the first pixels, and wherein the first and second light blocking patterns have the same planar shape.
    Type: Grant
    Filed: June 9, 2022
    Date of Patent: July 4, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyeon Bum Lee, Chi Wook An
  • Publication number: 20230094620
    Abstract: A display device according to an embodiment includes: a substrate; a light emitting element which is disposed on the substrate, and includes a first electrode, an emission layer, and a second electrode; a reflective layer which is disposed on the light emitting element, and includes an inorganic material; an encapsulation layer which is disposed on the reflective layer; a light blocking layer which is disposed on the encapsulation layer, and defines an opening overlapping the emission layer in a plan view; a reflection adjusting layer which is disposed on the light blocking layer; and a first organic layer which is disposed on the reflection adjusting layer, and defines an opening overlapping the emission layer in the plan view.
    Type: Application
    Filed: March 29, 2022
    Publication date: March 30, 2023
    Inventors: Hyeon Bum LEE, Chi Wook AN, Jung-Hyun CHO
  • Patent number: 11599215
    Abstract: A display device, including a substrate; a pixel electrode and an opposing electrode on the substrate; an encapsulation portion on the opposing electrode, the encapsulation portion including at least one organic layer and at least one inorganic layer alternately deposited; and a planarization layer on the encapsulation portion, the planarization layer including a portion covering an edge portion of the encapsulation portion, a first angle between an edge side surface of the planarization layer and a surface of the substrate being larger than a second angle between an edge side surface of the encapsulation portion and the surface of the substrate.
    Type: Grant
    Filed: September 20, 2021
    Date of Patent: March 7, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yong-Hwan Park, Mi Young Kim, Chi Wook An, Seong Jun Lee
  • Patent number: 11600335
    Abstract: A memory device includes bit lines coupled to a memory block, a page buffer group selecting the bit lines in response to page buffer signals, applying a precharge voltage to selected bit lines from among the bit lines, and applying a ground voltage to unselected bit lines during a program verify operation, and a page buffer controller outputting the page buffer signals to selectively apply the precharge voltage to the bit lines according to an order of read operations on a logical page during the program verify operation.
    Type: Grant
    Filed: March 23, 2020
    Date of Patent: March 7, 2023
    Assignee: SK hynix Inc.
    Inventor: Chi Wook An
  • Publication number: 20230066997
    Abstract: A display device including: a display panel including first and second pixels a substrate; and a touch sensor on the display panel, wherein the touch sensor includes: sensor patterns on the display panel; bridge patterns connected to the sensor patterns; a first light blocking pattern on the sensor patterns, wherein the first light blocking pattern is provided for each of the first pixels the first light blocking pattern including a first opening corresponding to an emission area of each of the first pixels; and a second light blocking pattern located under the first light blocking pattern, wherein the second light blocking pattern is provided for each of the first pixels, the second light blocking pattern including a second opening to correspond to the emission area of each of the first pixels, and wherein the first and second light blocking patterns have the same planar shape.
    Type: Application
    Filed: June 9, 2022
    Publication date: March 2, 2023
    Inventors: Hyeon Bum Lee, Chi Wook An
  • Publication number: 20220415980
    Abstract: A light emitting display device includes: a flexible substrate including a display area and a peripheral area having a bending area. The display area includes: a plurality of inorganic layers; first and second organic layers that are disposed on the plurality of inorganic layers; a black pixel defining layer that is disposed on the second organic layer; and a spacer that is disposed on the black pixel defining layer. In the bending area, the plurality of inorganic layers include a first opening formed at a position corresponding to the bending area. The first opening is filled with the first organic layer, the second organic layer is disposed on the first organic layer, the black pixel defining layer includes a second opening at a position corresponding to the bending area, and the second opening is filled with an organic layer for the spacer, formed of a same material as the spacer.
    Type: Application
    Filed: March 20, 2022
    Publication date: December 29, 2022
    Inventors: Hyeon Bum LEE, Seong Min Wang, Chi Wook An
  • Publication number: 20220367585
    Abstract: A display device includes a pixel electrode, a wall layer, an emission layer, a touch electrode, and a light blocking member. The wall layer includes an opening exposing the pixel electrode. The emission layer overlaps the pixel electrode. The light blocking member overlaps the touch electrode and includes a first opening and a second opening each exposing the emission layer. A first perimeter section of the first opening is spaced from a first perimeter section of the opening by a first distance in a first direction in a plan view of the display device. A second perimeter section of the first opening is spaced from a second perimeter section of the opening by a second distance in a second direction in the plan view. The second distance is equal to the first distance. The second direction is at 45 degrees relative to the first direction.
    Type: Application
    Filed: November 15, 2021
    Publication date: November 17, 2022
    Inventors: Hyeon Bum LEE, Hyun Duck CHO, Chi Wook AN
  • Patent number: 11469399
    Abstract: A display device includes a substrate and a plurality of pixels positioned on the substrate. Each pixel includes a first electrode, a partition wall including a first opening overlapping the first electrode, and a low refractive layer including a second opening overlapping the first opening. The plurality of pixels includes a first plurality of pixels having a first gap between an edge of the first opening and an edge of the second opening and a second plurality of pixels having a second gap between an edge of the first opening and an edge of the second opening. The first gap and the second gap have different lengths from each other. At least one of the first plurality of pixels and at least one of the second plurality of pixels emit light of the same color as each other.
    Type: Grant
    Filed: June 16, 2020
    Date of Patent: October 11, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Soon Il Jung, Chi Wook An, Hae Young Yun, Jung-Hyun Cho
  • Publication number: 20220285650
    Abstract: A display device according to embodiments includes: a display panel that includes a display area that includes a partition layer that includes a first opening through which light is emitted from an organic light emitting diode and a peripheral area around the display area; a touch electrode disposed on the display panel; a touch electrode passivation layer that covers the touch electrode and includes a second opening that corresponds to the first opening; and a high refractive index layer that covers the touch electrode passivation layer and the second opening. The touch electrode passivation layer includes an open region formed in a portion that corresponds to the peripheral area, and the touch electrode passivation layer is not formed in the open region.
    Type: Application
    Filed: May 23, 2022
    Publication date: September 8, 2022
    Inventors: SOON IL JUNG, CHI WOOK AN, HAE YOUNG YUN, JUNG-HYUN CHO
  • Publication number: 20220231089
    Abstract: A display device includes a substrate, a pixel electrode disposed on the substrate, a bank layer which is disposed on the pixel electrode and in which a pixel opening overlapping the pixel electrode is defined, an encapsulation layer disposed on the pixel electrode and the bank layer, a sensing electrode disposed on the encapsulation layer, a first insulating layer which is disposed on the sensing electrode and in which an opening overlapping the pixel opening is defined, and a second insulating layer which is disposed on the first insulating layer and has a higher refractive index than a refractive index of the first insulating layer, where a side inclination angle of the first insulating layer in the opening of the first insulating layer is different depending on a position of the opening of the first insulating layer.
    Type: Application
    Filed: August 24, 2021
    Publication date: July 21, 2022
    Inventors: Jung-Hyun CHO, Chi Wook AN, Kang Wook HEO
  • Patent number: 11385751
    Abstract: A sensing unit includes a plurality of first sensing electrodes of a first group disposed in a sensing area in a first direction, and a first sensing line electrically connected to one of the first sensing electrodes of the first group. The first sensing line is disposed in the sensing area and extends in a second direction intersecting the first direction.
    Type: Grant
    Filed: May 20, 2020
    Date of Patent: July 12, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ki Ho Bang, Yong Hwan Park, Chi Wook An, Seong Jun Lee
  • Publication number: 20220189557
    Abstract: A memory device comprises a plurality of memory cells each having a threshold voltage corresponding to any one of a plurality of program states according to target data to be stored by performing a program operation, page buffers configured to store data provided from a memory controller, a data conversion controller configured to control the page buffers to convert the data into the target data including a plurality of logical page bits and a program operation controller configured to perform the program operation to store the target data in the plurality of memory cells, wherein the plurality of logical page bits include at least one logical page bit distinguishing even program states from odd program states among the plurality of program states and remaining logical page bits other than the at least one logical page bit having a same value as at least one program state among adjacent program states.
    Type: Application
    Filed: March 7, 2022
    Publication date: June 16, 2022
    Inventors: Jong Woo KIM, Chi Wook AN, Un Sang LEE
  • Patent number: 11362308
    Abstract: A display device according to embodiments includes: a display panel that includes a display area that includes a partition layer that includes a first opening through which light is emitted from an organic light emitting diode and a peripheral area around the display area; a touch electrode disposed on the display panel a touch electrode passivation layer that covers the touch electrode and includes a second opening that corresponds to the first opening; and a high refractive index layer that covers the touch electrode passivation layer and the second opening. The touch electrode passivation layer includes an open region formed in a portion that corresponds to the peripheral area, and the touch electrode passivation layer is not formed in the open region.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: June 14, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Soon Il Jung, Chi Wook An, Hae Young Yun, Jung-Hyun Cho