Patents by Inventor Nak-cho Choi

Nak-cho 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).

  • Publication number: 20220131114
    Abstract: A display device includes a substrate, a first insulating layer on the substrate and including a flat upper surface, a first conductive layer on the substrate, the first conductive layer including first to third light blocking patterns separated from one another, a second insulating layer on the first conductive layer, and pixel electrodes on the second insulating layer. The pixel electrodes includes a first pixel electrode in a first color pixel and in the first light blocking pattern in a first direction in a plan view, and a second pixel electrode in a second color pixel and covering the second and third light blocking patterns in the first direction, the second insulating layer includes first and second areas respectively overlapping the first and second pixel electrodes, and each of the upper surfaces of the first and second areas includes a curved surface with a concave central portion.
    Type: Application
    Filed: October 21, 2021
    Publication date: April 28, 2022
    Inventors: Min Yeul RYU, Dong Ki LEE, Jun Hee LEE, Choong Youl IM, Beohm Rock CHOI, Nak Cho CHOI
  • Publication number: 20220130915
    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: Application
    Filed: August 23, 2021
    Publication date: April 28, 2022
    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
  • Patent number: 11296159
    Abstract: An embodiment of the present disclosure provides a display device including a substrate, a thin film transistor on the substrate, a first electrode electrically connected to the thin film transistor, a light emitting layer and a second electrode overlapping the first electrode, a first partition wall between the first electrode and the second electrode, and a second partition wall overlapping the first partition wall, wherein the first partition wall includes at least one of a black pigment and a black dye, wherein the second partition wall includes an organic insulating material, and wherein a portion of the second partition wall overlaps the first electrode.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: April 5, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Nak Cho Choi, Dae-Gi Kweon, Ji hee Kim, Kie Hyun Nam, Min Yeul Ryu, Sang Hee Yu, Jun Hee Lee, Da-young Jung
  • Publication number: 20220077269
    Abstract: A display device includes a substrate, a transistor, an interlayer insulating layer, a first conductive line, a pixel electrode, a passivation layer, a common electrode, and a light emitting element layer. The transistor overlaps the substrate. The interlayer insulating layer overlaps the transistor and includes a first groove. The first conductive line is electrically connected to the transistor and is at least partially disposed inside the first groove. The pixel electrode is electrically connected to the transistor and overlaps the first conductive line. The passivation layer is disposed between the pixel electrode and the first conductive line and directly contacts at least one of the pixel electrode and the first conductive line. The common electrode overlaps the pixel electrode. The light emitting element layer is disposed between the common electrode and the pixel electrode.
    Type: Application
    Filed: January 21, 2021
    Publication date: March 10, 2022
    Inventors: Jun Hee LEE, Nak Cho CHOI, Min Yeul RYU, Dong Ki LEE, Choong Youl IM, Beohm Rock CHOI
  • Publication number: 20220069014
    Abstract: Provided is a display device. The display device includes a substrate, a light emitting diode that is disposed on the substrate, and includes a pixel electrode, a common electrode, and an emission layer disposed between the pixel electrode and the common electrode; an encapsulation layer that is disposed on the light emitting diode, a touch electrode that is disposed on the encapsulation layer, a light blocking portion that is disposed on the touch electrode, a color filter layer that overlaps the emission layer, and a planarization layer that is disposed on the light blocking portion and the color filter layer, wherein the color filter layer is disposed on the encapsulation layer and the light blocking portion, and an edge portion of the color filter layer overlaps the light blocking portion.
    Type: Application
    Filed: April 13, 2021
    Publication date: March 3, 2022
    Inventors: Nak Cho CHOI, Baek Min OH, Eon Joo LEE, Hae Young YUN
  • Publication number: 20210265448
    Abstract: A display device includes a substrate comprising an active area and a non-active area a first data conductive layer disposed on the substrate and including signal wires connected to pixels, a first insulating layer disposed on the first data conductive layer, a second data conductive layer disposed on the first insulating layer and including a connection wire connected to some of the signal wires and dummy wiring patterns disconnected the signal wires, a second insulating layer disposed on the second data conductive layer and a pixel electrode disposed on the second insulating layer. The dummy wiring patterns are separated from one another at a disconnection, the second insulating layer includes a second portion disposed on the disconnection and a third portion disposed on at least a portion of the connection wire, and thicknesses thereof are different from each other.
    Type: Application
    Filed: December 1, 2020
    Publication date: August 26, 2021
    Inventors: Dong Hyun SON, Seung Hwan CHO, Dong Won KIM, Min Yeul RYU, Ki Ho BANG, Nak Cho CHOI
  • Publication number: 20210202646
    Abstract: An organic light emitting diode display includes a substrate, a plurality of pixels disposed on the substrate, a plurality of transmissive windows spaced apart from the pixels, and a light blocking member disposed between one of the pixels and one of the transmissive windows. The pixels display an image, and light is transmitted through the transmissive windows. Each pixel includes a transistor including a plurality of electrode members disposed in different layers on the substrate. The light blocking member includes a plurality of light blocking sub-members respectively disposed in the same layers as the plurality of electrode members.
    Type: Application
    Filed: March 10, 2021
    Publication date: July 1, 2021
    Inventors: KOHEI EBISUNO, Yong Ho YANG, Jun Hee LEE, Nak Cho CHOI
  • Patent number: 10978537
    Abstract: An organic light emitting diode display includes a substrate, a plurality of pixels disposed on the substrate, a plurality of transmissive windows spaced apart from the pixels, and a light blocking member disposed between one of the pixels and one of the transmissive windows. The pixels display an image, and light is transmitted through the transmissive windows. Each pixel includes a transistor including a plurality of electrode members disposed in different layers on the substrate. The light blocking member includes a plurality of light blocking sub-members respectively disposed in the same layers as the plurality of electrode members.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: April 13, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kohei Ebisuno, Yong Ho Yang, Jun Hee Lee, Nak Cho Choi
  • Publication number: 20200328263
    Abstract: An embodiment of the present disclosure provides a display device including a substrate, a thin film transistor on the substrate, a first electrode electrically connected to the thin film transistor, a light emitting layer and a second electrode overlapping the first electrode, a first partition wall between the first electrode and the second electrode, and a second partition wall overlapping the first partition wall, wherein the first partition wall includes at least one of a black pigment and a black dye, wherein the second partition wall includes an organic insulating material, and wherein a portion of the second partition wall overlaps the first electrode.
    Type: Application
    Filed: January 6, 2020
    Publication date: October 15, 2020
    Inventors: Nak Cho CHOI, Dae-Gi KWEON, Ji hee KIM, Kie Hyun NAM, Min Yeul RYU, Sang Hee YU, Jun Hee LEE, Da-young JUNG
  • Patent number: 10551707
    Abstract: An array substrate is provided. The array substrate includes: a first substrate; and a color filter layer disposed on the first substrate, wherein the color filter layer comprises: a first color filter that is located on the first substrate and comprises a recess and a sub-protrusion; and a second color filter that is located on the first substrate to be adjacent to the first color filter along a first direction, and comprises a protrusion protruding toward the recess of the first color filter. The sub-protrusion of the first color filter protrudes toward the protrusion of the second color filter and is at least partially superimposed with the protrusion.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: February 4, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joong Gun Chong, Nak Cho Choi, Je Hong Choi
  • Patent number: 10466548
    Abstract: A display device includes a first substrate including a first base substrate, a first sub-pixel electrode, which is disposed on a first surface of the first base substrate, a passivation layer, which is disposed on the first sub-pixel electrode, and a second sub-pixel electrode, which is disposed on the passivation layer and partially overlaps the first sub-pixel electrode, a second substrate facing the first substrate, and a liquid crystal layer disposed between the first substrate and the second substrate, where the second sub-pixel electrode includes a first portion, which is apart from the first surface of the first base substrate by a first distance, and a second portion, which is apart from the first surface of the first base substrate by a second distance which is less than the first distance.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: November 5, 2019
    Assignee: SAMSUNG DISPLAY CO. LTD.
    Inventors: Tae Kyung Yim, Su Wan Woo, Yeo Geon Yoon, Nak Cho Choi
  • Patent number: 10297617
    Abstract: A display device includes a scan line extending primarily in a first direction, disposed on a substrate, and transmitting a scan signal, a data line extending primarily in a second direction intersecting the first direction and transmitting a data signal, a driving voltage line extending primarily in the second direction and transmitting a driving voltage, a plurality of transistors including first and second transistors, wherein the second transistor is connected to the scan line and the data line, and the first transistor is connected to the second transistor, a light emitting element connected to the plurality of transistors, and a storage capacitor disposed between the substrate and an active pattern of the first transistor, the storage capacitor including a first electrode disposed on the substrate and a second electrode at least partially overlapping the first electrode. A first insulating layer is disposed between the first and second electrodes.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: May 21, 2019
    Assignee: SAMUNG DISPLAY CO., LTD.
    Inventors: Yong Ho Yang, Hui Won Yang, Nak Cho Choi, Hwang Sup Shin, Jun Hee Lee
  • Patent number: 10082694
    Abstract: The described technology relates generally to a display device, and the display device according to an exemplary embodiment includes: a main panel; an auxiliary panel positioned at two opposing edges of the main panel; and a cover glass covering a front surface of the main panel and the auxiliary panel, wherein the auxiliary panel has a curved shape.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: September 25, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Nak Cho Choi, Su Wan Woo, Suk Choi
  • Patent number: 10074710
    Abstract: An organic light emitting diode display includes a substrate, a plurality of pixels disposed on the substrate, and a plurality of transmitting windows configured to transmit light therethrough. The plurality of transmitting windows is spaced apart from the plurality of pixels. Each of the plurality of pixels includes a transistor and a capacitor. The transistor includes a light-blocking electrode disposed on the substrate and a plurality of electrode members disposed at different layers on the light-blocking electrode. The capacitor includes a first capacitor electrode disposed on a same layer as the light-blocking electrode, and a second capacitor electrode disposed on a same layer as a first one of the plurality of electrode members to overlap the first capacitor electrode.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: September 11, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kohei Ebisuno, Ae Shin, Yong Ho Yang, Jun Hee Lee, Nak Cho Choi
  • Publication number: 20180097016
    Abstract: A display device includes a scan line extending primarily in a first direction, disposed on a substrate, and transmitting a scan signal, a data line extending primarily in a second direction intersecting the first direction and transmitting a data signal, a driving voltage line extending primarily in the second direction and transmitting a driving voltage, a plurality of transistors including first and second transistors, wherein the second transistor is connected to the scan line and the data line, and the first transistor is connected to the second transistor, a light emitting element connected to the plurality of transistors, and a storage capacitor disposed between the substrate and an active pattern of the first transistor, the storage capacitor including a first electrode disposed on the substrate and a second electrode at least partially overlapping the first electrode. A first insulating layer is disposed between the first and second electrodes.
    Type: Application
    Filed: April 19, 2017
    Publication date: April 5, 2018
    Inventors: Yong Ho YANG, Hui Won YANG, Nak Cho CHOI, Hwang Sup SHIN, Jun Hee LEE
  • Publication number: 20180069069
    Abstract: An organic light emitting diode display includes a substrate, a plurality of pixels disposed on the substrate, and a plurality of transmitting windows configured to transmit light therethrough. The plurality of transmitting windows is spaced apart from the plurality of pixels. Each of the plurality of pixels includes a transistor and a capacitor. The transistor includes a light-blocking electrode disposed on the substrate and a plurality of electrode members disposed at different layers on the light-blocking electrode. The capacitor includes a first capacitor electrode disposed on a same layer as the light-blocking electrode, and a second capacitor electrode disposed on a same layer as a first one of the plurality of electrode members to overlap the first capacitor electrode.
    Type: Application
    Filed: April 18, 2017
    Publication date: March 8, 2018
    Inventors: KOHEI EBISUNO, AE SHIN, YONG HO YANG, JUN HEE LEE, NAK CHO CHOI
  • Publication number: 20180040682
    Abstract: An organic light emitting diode display includes a substrate, a plurality of pixels disposed on the substrate, a plurality of transmissive windows spaced apart from the pixels, and a light blocking member disposed between one of the pixels and one of the transmissive windows. The pixels display an image, and light is transmitted through the transmissive windows. Each pixel includes a transistor including a plurality of electrode members disposed in different layers on the substrate. The light blocking member includes a plurality of light blocking sub-members respectively disposed in the same layers as the plurality of electrode members.
    Type: Application
    Filed: May 1, 2017
    Publication date: February 8, 2018
    Inventors: KOHEI EBISUNO, YONG HO YANG, JUN HEE LEE, NAK CHO CHOI
  • Patent number: 9846339
    Abstract: A liquid crystal display includes a substrate on which a pixel region is defined, a first sub-pixel electrode in the pixel region on the substrate, an insulating layer on the first sub-pixel electrode, a second sub-pixel electrode in the pixel region on the insulating layer, a floating electrode in the pixel region on the insulating layer and disconnected from the second sub-pixel electrode, a liquid crystal layer on the second sub-pixel electrode and the floating electrode, and a common electrode disposed on the liquid crystal layer. The floating electrode includes first to fourth floating electrodes in first to fourth quadrants of the pixel region, respectively. The first to fourth floating electrodes are separated from one another, and the first sub-pixel electrode partially overlaps the second sub-pixel electrode and the first to fourth floating electrodes.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: December 19, 2017
    Assignee: SAMSUNG DISPLAY CO. LTD.
    Inventors: Tae Ho Kang, Hae Ryeong Park, Yong Jo Kim, Dong Il Yoo, Tae Kyung Yim, Nak Cho Choi
  • Publication number: 20170131599
    Abstract: A display device includes a first substrate including a first base substrate, a first sub-pixel electrode, which is disposed on a first surface of the first base substrate, a passivation layer, which is disposed on the first sub-pixel electrode, and a second sub-pixel electrode, which is disposed on the passivation layer and partially overlaps the first sub-pixel electrode, a second substrate facing the first substrate, and a liquid crystal layer disposed between the first substrate and the second substrate, where the second sub-pixel electrode includes a first portion, which is apart from the first surface of the first base substrate by a first distance, and a second portion, which is apart from the first surface of the first base substrate by a second distance which is less than the first distance.
    Type: Application
    Filed: June 13, 2016
    Publication date: May 11, 2017
    Inventors: Tae Kyung YIM, Su Wan WOO, Yeo Geon YOON, Nak Cho CHOI
  • Publication number: 20170123280
    Abstract: A liquid crystal display includes a substrate on which a pixel region is defined, a first sub-pixel electrode in the pixel region on the substrate, an insulating layer on the first sub-pixel electrode, a second sub-pixel electrode in the pixel region on the insulating layer, a floating electrode in the pixel region on the insulating layer and disconnected from the second sub-pixel electrode, a liquid crystal layer on the second sub-pixel electrode and the floating electrode, and a common electrode disposed on the liquid crystal layer. The floating electrode includes first to fourth floating electrodes in first to fourth quadrants of the pixel region, respectively. The first to fourth floating electrodes are separated from one another, and the first sub-pixel electrode partially overlaps the second sub-pixel electrode and the first to fourth floating electrodes.
    Type: Application
    Filed: June 15, 2016
    Publication date: May 4, 2017
    Inventors: Tae Ho KANG, Hae Ryeong PARK, Yong Jo KIM, Dong Il YOO, Tae Kyung YIM, Nak Cho CHOI