Patents by Inventor Se Jong Yoo

Se Jong Yoo 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: 12142631
    Abstract: A light emitting diode includes a first end and a second end facing each other, a current blocking layer, a first semiconductor layer, an active layer, a second semiconductor layer, and an insulating film surrounding outer circumferential surfaces of the first semiconductor layer, the active layer, and the second semiconductor layer and exposing at least a portion of the current blocking layer and at least a portion of the first semiconductor layer at the second end. The current blocking layer, the first semiconductor layer, the active layer, and the second semiconductor layer are sequentially disposed in a direction from the second end to the first end.
    Type: Grant
    Filed: August 13, 2021
    Date of Patent: November 12, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Chul Jong Yoo, Dong Uk Kim, Se Young Kim, So Young Lee, Hyung Rae Cha
  • Publication number: 20220190046
    Abstract: An inorganic light emitting diode device includes: a substrate including a plurality of sub-pixels; a thin film transistor (TFT) in each of the plurality of sub-pixels, wherein the TFT has at least one inorganic layer; an encapsulation layer on an organic light emitting layer, wherein the encapsulation layer includes at least one organic encapsulation layer and at least one inorganic encapsulation layer; and an opening exposing the inorganic layer of the TFT, wherein the opening connects the at least one inorganic encapsulation layer with the inorganic layer of the TFT.
    Type: Application
    Filed: February 23, 2022
    Publication date: June 16, 2022
    Applicant: LG Display Co., Ltd.
    Inventors: Mi-Seong KIM, Se-Jong YOO, Kyoung-Mook LEE
  • Patent number: 11296156
    Abstract: An inorganic light emitting diode device includes: a substrate including a plurality of sub-pixels; a thin film transistor (TFT) in each of the plurality of sub-pixels, wherein the TFT has at least one inorganic layer; an encapsulation layer on an organic light emitting layer, wherein the encapsulation layer includes at least one organic encapsulation layer and at least one inorganic encapsulation layer; and an opening exposing the inorganic layer of the TFT, wherein the opening connects the at least one inorganic encapsulation layer with the inorganic layer of the TFT.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: April 5, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Mi-Seong Kim, Se-Jong Yoo, Kyoung-Mook Lee
  • Publication number: 20200168670
    Abstract: An inorganic light emitting diode device includes: a substrate including a plurality of sub-pixels; a thin film transistor (TFT) in each of the plurality of sub-pixels, wherein the TFT has at least one inorganic layer; an encapsulation layer on an organic light emitting layer, wherein the encapsulation layer includes at least one organic encapsulation layer and at least one inorganic encapsulation layer; and an opening exposing the inorganic layer of the TFT, wherein the opening connects the at least one inorganic encapsulation layer with the inorganic layer of the TFT.
    Type: Application
    Filed: September 23, 2019
    Publication date: May 28, 2020
    Applicant: LG Display Co., Ltd.
    Inventors: Mi-Seong KIM, Se-Jong YOO, Kyoung-Mook LEE
  • Patent number: 10541281
    Abstract: Disclosed is a touch organic light-emitting display device that is capable of stably connecting metal mesh electrodes to each other using a plurality of bridges and of minimizing the occurrence of parasitic capacitance. The display device includes an organic light-emitting array including pixel openings and a bank insulation film, and a touch electrode array bonded to the organic light-emitting array. The touch electrode array includes first and second mesh electrodes arranged in first and second directions and having a multiple-lattice structure, bridges for connecting first mesh electrodes to each other, and connecting patterns for connecting second mesh electrodes to each other. The bridges do not overlap the second mesh electrodes but overlap the connecting patterns so as to intersect the same. The first and second mesh electrodes, the bridges and the connecting patterns overlap the bank insulation film.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: January 21, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Jong-Hyun Han, Se-Jong Yoo, Nack-Bong Choi
  • Patent number: 10241604
    Abstract: Provided are a touch panel, a method of manufacturing the same, and a touch panel integrated organic light emitting display device. The touch panel includes a substrate, a plurality of connection electrodes, an over-coating layer, a first line electrode, a second line electrode, a plurality of first segment electrodes, and a plurality of second segment electrodes. The plurality of connection electrodes is disposed on the substrate to be separated from each other. The over-coating layer includes a plurality of contact holes exposing a part of each connection electrode. The second line electrode is connected with the connection electrode through the contact hole of the over-coating layer without disconnection.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: March 26, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Mi Jung Lee, Yong Chul Kim, Se Jong Yoo, Jong Hyun Han
  • Patent number: 10236327
    Abstract: Disclosed is an organic light-emitting display device that has improved color viewing angle characteristics while including a mesh pattern. The organic light-emitting display device includes an organic light-emitting array including a plurality of pixel openings, and a touch electrode array bonded to the organic light-emitting array. The touch electrode array includes a plurality of first mesh electrodes arranged in a first direction and having a lattice structure, and a plurality of second mesh electrodes arranged in a second direction and having a lattice structure. Each of the first mesh electrodes and the second mesh electrodes includes a plurality of overlapping portions that overlap the pixel openings, and a plurality of non-overlapping portions positioned between the pixel openings. At least some of the overlapping portions include brightness-increasing portions, which are formed of a material different from that of the non-overlapping portions.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: March 19, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Young-Jin Choe, Nack-Bong Choi, Se-Jong Yoo, Jong-Hyun Han
  • Publication number: 20180190723
    Abstract: Disclosed is a touch organic light-emitting display device that is capable of stably connecting metal mesh electrodes to each other using a plurality of bridges and of minimizing the occurrence of parasitic capacitance. The display device includes an organic light-emitting array including pixel openings and a bank insulation film, and a touch electrode array bonded to the organic light-emitting array. The touch electrode array includes first and second mesh electrodes arranged in first and second directions and having a multiple-lattice structure, bridges for connecting first mesh electrodes to each other, and connecting patterns for connecting second mesh electrodes to each other. The bridges do not overlap the second mesh electrodes but overlap the connecting patterns so as to intersect the same. The first and second mesh electrodes, the bridges and the connecting patterns overlap the bank insulation film.
    Type: Application
    Filed: December 27, 2017
    Publication date: July 5, 2018
    Inventors: Jong-Hyun HAN, Se-Jong YOO, Nack-Bong CHOI
  • Publication number: 20180122867
    Abstract: Disclosed is an organic light-emitting display device that has improved color viewing angle characteristics while including a mesh pattern. The organic light-emitting display device includes an organic light-emitting array including a plurality of pixel openings, and a touch electrode array bonded to the organic light-emitting array. The touch electrode array includes a plurality of first mesh electrodes arranged in a first direction and having a lattice structure, and a plurality of second mesh electrodes arranged in a second direction and having a lattice structure. Each of the first mesh electrodes and the second mesh electrodes includes a plurality of overlapping portions that overlap the pixel openings, and a plurality of non-overlapping portions positioned between the pixel openings. At least some of the overlapping portions include brightness-increasing portions, which are formed of a material different from that of the non-overlapping portions.
    Type: Application
    Filed: October 30, 2017
    Publication date: May 3, 2018
    Inventors: Young-Jin CHOE, Nack-Bong CHOI, Se-Jong YOO, Jong-Hyun HAN
  • Patent number: 9886063
    Abstract: Disclosed is a flexible display device that includes a backplane substrate having an active area and a non-display area outside the display area, the active area having a plurality of pixels defined with a plurality of gate lines and a plurality of data lines, wherein the backplane substrate is defined with a folding axis with reference to which the display device is folded or bended and a folding area in which a radius of curvature remains substantially the same as a radius of curvature at the folding axis located at a center of the folding area when the display device is folded or bended; a plurality of embedded drivers on the backplane substrate in the non-display area, wherein two of the embedded drivers are spaced apart from each other outside the folding area with the folding area therebetween; and a plurality of link wires between the plurality of embedded drivers and the active area, electrically connecting the plurality of embedded drivers and one of the plurality of gate lines and the plurality of d
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: February 6, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Se-Jong Yoo, Nack-Bong Choi, Seung-Hee Kuk
  • Publication number: 20170147116
    Abstract: Provided are a touch panel, a method of manufacturing the same, and a touch panel integrated organic light emitting display device. The touch panel includes a substrate, a plurality of connection electrodes, an over-coating layer, a first line electrode, a second line electrode, a plurality of first segment electrodes, and a plurality of second segment electrodes. The plurality of connection electrodes is disposed on the substrate to be separated from each other. The over-coating layer includes a plurality of contact holes exposing a part of each connection electrode. The second line electrode is connected with the connection electrode through the contact hole of the over-coating layer without disconnection.
    Type: Application
    Filed: August 20, 2015
    Publication date: May 25, 2017
    Applicant: LG Display Co., Ltd.
    Inventors: Mi Jung LEE, Yong Chul KIM, Se Jong YOO, Jong Hyun HAN
  • Publication number: 20170031389
    Abstract: Disclosed is a flexible display device that includes a backplane substrate having an active area and a non-display area outside the display area, the active area having a plurality of pixels defined with a plurality of gate lines and a plurality of data lines, wherein the backplane substrate is defined with a folding axis with reference to which the display device is folded or bended and a folding area in which a radius of curvature remains substantially the same as a radius of curvature at the folding axis located at a center of the folding area when the display device is folded or bended; a plurality of embedded drivers on the backplane substrate in the non-display area, wherein two of the embedded drivers are spaced apart from each other outside the folding area with the folding area therebetween; and a plurality of link wires between the plurality of embedded drivers and the active area, electrically connecting the plurality of embedded drivers and one of the plurality of gate lines and the plurality of d
    Type: Application
    Filed: July 13, 2016
    Publication date: February 2, 2017
    Inventors: Se-Jong Yoo, Nack-Bong Choi, Seung-Hee Kuk
  • Patent number: 9405413
    Abstract: Disclosed is a touch panel and a display device using the same, wherein lines are formed at different layers in a bezel of the touch panel, and one or more insulating layers are interposed between each layer comprising the lines, or adjacent sides of driving electrode and receiving electrode for forming an intersection including an outermost crossing region formed in an outermost region of an active area are corrugated.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: August 2, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Su Chang An, Deuk Su Lee, Se jong Yoo, Yang sik Lee
  • Publication number: 20140176492
    Abstract: Disclosed is a touch panel and a display device using the same, wherein lines are formed at different layers in a bezel of the touch panel, and one or more insulating layers are interposed between each layer comprising the lines, or adjacent sides of driving electrode and receiving electrode for forming an intersection including an outermost crossing region formed in an outermost region of an active area are corrugated.
    Type: Application
    Filed: December 3, 2013
    Publication date: June 26, 2014
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Su Chang An, Deuk Su Lee, Se jong Yoo, Yang sik Lee
  • Patent number: 8659576
    Abstract: An Liquid Crystal Display (LCD) with a touch screen function includes an array substrate having a display region and a photosensitive region divided by data lines, scan lines, and common lines, wherein the photosensitive region includes a switching element having a first terminal connected to an (n?1)th scan line to receive a select signal and a second terminal connected to a readout system, a charge storage element having a first terminal connected to a third terminal of the switching element and a second terminal connected to the common lines, and a photosensitive element having a first terminal connected to an nth scan line and a second terminal connected to the first terminal of the charge storage element, wherein when the photosensitive element is turned on according to external illuminance, the charge storage element is discharged and the readout system detects a difference of external illuminance.
    Type: Grant
    Filed: October 6, 2009
    Date of Patent: February 25, 2014
    Assignee: Hydis Technologies Co., Ltd.
    Inventors: Chang Heon Kang, Seong Jun An, Se Jong Yoo, Hyun Chul Nam, Se Hwan Na
  • Patent number: 8624856
    Abstract: A liquid crystal display device includes a liquid crystal panel comprising a first substrate and a second substrate, a seal pattern arranged in the edge provided between the first and second substrates, and a liquid crystal layer, a plurality of first electrodes and second electrodes crossing each other and arranged in the seal pattern on an outer surface of the second substrate, a pad electrode for the touch panel partially overlapping the seal pattern on the outer surface of the second substrate, a pad electrode for the liquid crystal panel arranged at the outside of the seal pattern on the first substrate, a chip-on-film (COF) connected to the pad electrode for the liquid crystal panel, a printed circuit board for driving the liquid crystal panel, connected to the chip-on-film, a routing line to connect the pad electrode for the touch panel to the first electrodes and the second electrodes on the outer surface of the second substrate, and a flexible printed cable connected to pad electrodes for the touch p
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: January 7, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Dong-Sup Kim, Deuk-Su Lee, So-Haeng Cho, Se-Jong Yoo
  • Patent number: 8542178
    Abstract: A display driving circuit is provided. The display driving circuit, in which a gate driver shifting and outputting an input signal is embedded, includes an input portion receiving a pulse input signal consisting of a high-level signal and a low-level signal and transferring the pulse input signal to a boosting node, an inverter portion connected with the input portion, and inverting the pulse input signal to output the inverted signal, and a pull-up/pull-down portion consisting of a pull-up portion connected to the input portion, receiving a boosting voltage from the boosting node, and outputting a pull-up output signal, and a pull-down portion connected to the inverter portion, receiving the inverted signal, and outputting a pull-down output signal. Here, the inverter portion outputs a signal having a lower level than the low-level signal for a predetermined time period in which the pull-up output signal is output.
    Type: Grant
    Filed: June 15, 2010
    Date of Patent: September 24, 2013
    Assignee: Hydis Technologies Co., Ltd.
    Inventors: Se Jong Yoo, Ki Min Son, Joon Sung An, Seong Jun An
  • Publication number: 20110298771
    Abstract: A display driving circuit is provided. The display driving circuit, in which a gate driver shifting and outputting an input signal is embedded, includes an input portion receiving a pulse input signal consisting of a high-level signal and a low-level signal and transferring the pulse input signal to a boosting node, an inverter portion connected with the input portion, and inverting the pulse input signal to output the inverted signal, and a pull-up/pull-down portion consisting of a pull-up portion connected to the input portion, receiving a boosting voltage from the boosting node, and outputting a pull-up output signal, and a pull-down portion connected to the inverter portion, receiving the inverted signal, and outputting a pull-down output signal. Here, the inverter portion outputs a signal having a lower level than the low-level signal for a predetermined time period in which the pull-up output signal is output.
    Type: Application
    Filed: June 15, 2010
    Publication date: December 8, 2011
    Applicant: HYDIS TECHNOLOGIES CO., LTD.
    Inventors: Se Jong YOO, Ki Min SON, Joon Sung AN, Seong Jun AN
  • Publication number: 20110141042
    Abstract: A liquid crystal display device includes a liquid crystal panel comprising a first substrate and a second substrate, a seal pattern arranged in the edge provided between the first and second substrates, and a liquid crystal layer, a plurality of first electrodes and second electrodes crossing each other and arranged in the seal pattern on an outer surface of the second substrate, a pad electrode for the touch panel partially overlapping the seal pattern on the outer surface of the second substrate, a pad electrode for the liquid crystal panel arranged at the outside of the seal pattern on the first substrate, a chip-on-film (COF) connected to the pad electrode for the liquid crystal panel, a printed circuit board for driving the liquid crystal panel, connected to the chip-on-film, a routing line to connect the pad electrode for the touch panel to the first electrodes and the second electrodes on the outer surface of the second substrate, and a flexible printed cable connected to pad electrodes for the touch p
    Type: Application
    Filed: December 1, 2010
    Publication date: June 16, 2011
    Inventors: Dong-Sup KIM, Deuk-Su Lee, So-Haeng Cho, Se-Jong Yoo
  • Publication number: 20100103130
    Abstract: An Liquid Crystal Display (LCD) with a touch screen function includes an array substrate having a display region and a photosensitive region divided by data lines, scan lines, and common lines, wherein the photosensitive region includes a switching element having a first terminal connected to an (n?1)th scan line to receive a select signal and a second terminal connected to a readout system, a charge storage element having a first terminal connected to a third terminal of the switching element and a second terminal connected to the common lines, and a photosensitive element having a first terminal connected to an nth scan line and a second terminal connected to the first terminal of the charge storage element, wherein when the photosensitive element is turned on according to external illuminance, the charge storage element is discharged and the readout system detects a difference of external illuminance.
    Type: Application
    Filed: October 6, 2009
    Publication date: April 29, 2010
    Applicant: HYDIS TECHNOLOGIES CO., LTD.
    Inventors: Chang Heon Kang, Seong Jun An, Se Jong Yoo, Hyun Chul Nam, Se Hwan Na