Patents by Inventor Hak-Min Lee

Hak-Min Lee 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: 11937462
    Abstract: An electroluminescent display device includes an electroluminescent display device includes a substrate; a first pixel row on the substrate including a first plurality of pixels arranged along a first direction; a second pixel row on the substrate including a second plurality of pixels arranged along the first direction, the second pixel row being spaced apart from the first pixel row in a second direction; a first groove between the first and second pixel rows; and a light emitting diode in each pixel of the first and second pixel rows, wherein the first groove includes a first portion at one end of the first pixel row, a second portion at the other end of the first pixel row and a third portion between the first and second portions, and wherein third portion is smaller than the first portion and greater than the second portion.
    Type: Grant
    Filed: February 23, 2022
    Date of Patent: March 19, 2024
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Jeong-Mook Choi, Nack-Youn Jung, Hee-Jin Kim, Hak-Min Lee, Myung-O Joo, Sung-Soo Park
  • Patent number: 11864440
    Abstract: An electroluminescent display device includes a substrate having an emission area and a transparent portion, the emission area including a sub-pixel, and the transparent portion being adjacent to the sub-pixel; a first electrode in the emission area and over the substrate; a transparent connection pattern in the transparent portion and over the substrate, the transparent connection pattern being spaced apart from the first electrode; a first bank covering an edge of the first electrode and exposing the transparent connection pattern in the transparent portion; and a second bank on the first bank and covering the transparent connection pattern in the transparent portion, wherein the second bank includes a transparent conductive material.
    Type: Grant
    Filed: November 4, 2021
    Date of Patent: January 2, 2024
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Hee-Tae Lim, Ji-Ho Kang, Hak-Min Lee, Hyuk-Chan Gee
  • Publication number: 20220181414
    Abstract: An electroluminescent display device includes an electroluminescent display device includes a substrate; a first pixel row on the substrate including a first plurality of pixels arranged along a first direction; a second pixel row on the substrate including a second plurality of pixels arranged along the first direction, the second pixel row being spaced apart from the first pixel row in a second direction; a first groove between the first and second pixel rows; and a light emitting diode in each pixel of the first and second pixel rows, wherein the first groove includes a first portion at one end of the first pixel row, a second portion at the other end of the first pixel row and a third portion between the first and second portions, and wherein third portion is smaller than the first portion and greater than the second portion.
    Type: Application
    Filed: February 23, 2022
    Publication date: June 9, 2022
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Jeong-Mook CHOI, Nack-Youn JUNG, Hee-Jin KIM, Hak-Min LEE, Myung-O JOO, Sung-Soo PARK
  • Publication number: 20220173179
    Abstract: An electroluminescent display device includes a substrate, a first electrode on the substrate, a connection pattern on the substrate and formed of a same material as the first electrode, a bank covering edges of the first electrode and the connection pattern, a light-emitting layer on the first electrode, a second electrode on the light-emitting layer, the bank, and the connection pattern, and an auxiliary pattern between the second electrode and the connection pattern, wherein a side surface of the auxiliary pattern has a greater inclination angle than a side surface of the bank.
    Type: Application
    Filed: September 15, 2021
    Publication date: June 2, 2022
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Hak-Min LEE, Hee-Jin KIM
  • Publication number: 20220173206
    Abstract: An electroluminescent display device includes a substrate having an emission area and a transparent portion, the emission area including a sub-pixel, and the transparent portion being adjacent to the sub-pixel; a first electrode in the emission area and over the substrate; a transparent connection pattern in the transparent portion and over the substrate, the transparent connection pattern being spaced apart from the first electrode; a first bank covering an edge of the first electrode and exposing the transparent connection pattern in the transparent portion; and a second bank on the first bank and covering the transparent connection pattern in the transparent portion, wherein the second bank includes a transparent conductive material.
    Type: Application
    Filed: November 4, 2021
    Publication date: June 2, 2022
    Applicant: LG Display Co., Ltd.
    Inventors: Hee-Tae LIM, Ji-Ho KANG, Hak-Min LEE, Hyuk-Chan GEE
  • Patent number: 11289555
    Abstract: An electroluminescent display device includes an electroluminescent display device includes a substrate; a first pixel row on the substrate including a first plurality of pixels arranged along a first direction; a second pixel row on the substrate including a second plurality of pixels arranged along the first direction, the second pixel row being spaced apart from the first pixel row in a second direction; a first groove between the first and second pixel rows; and a light emitting diode in each pixel of the first and second pixel rows, wherein the first groove includes a first portion at one end of the first pixel row, a second portion at the other end of the first pixel row and a third portion between the first and second portions, and wherein third portion is smaller than the first portion and greater than the second portion.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: March 29, 2022
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Jeong-Mook Choi, Nack-Youn Jung, Hee-Jin Kim, Hak-Min Lee, Myung-O Joo, Sung-Soo Park
  • Publication number: 20220059794
    Abstract: The present invention provides an organic emitting diode including a first electrode; a second electrode facing the first electrode; an emitting material layer between the first and second electrodes; and an intervening layer between the emitting material layer and the second electrode and including a base material and an electron injection material, wherein the intervening layer contacts the second electrode.
    Type: Application
    Filed: November 4, 2021
    Publication date: February 24, 2022
    Applicant: LG Display Co., Ltd.
    Inventors: Hee-Jin KIM, Hak-Min LEE, Sung-Soo PARK
  • Patent number: 11094761
    Abstract: An organic light emitting display device and a method of fabricating thereof are discussed. The organic light emitting display device according to an example of the invention comprises a first substrate; a plurality of first bank layers arranged along a first direction and a second direction on the first substrate to define a plurality of pixels; a plurality of second bank layers disposed along the first direction on the first bank layers to divide columns of pixels having different colors; a plurality of third bank layers disposed along the second direction on the first bank layers; and an organic light emitting diode in each pixel, the organic light emitting diode including an organic light emitting layer, wherein the third bank layer is made of a same material as the second bank layer and the width of the third bank layer is smaller than that of the second bank layer.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: August 17, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Sung-Soo Park, Nack-Youn Jung, Hee-Jin Kim, Hak-Min Lee, Myung-O Joo, Jeong-Mook Choi
  • Patent number: 11049918
    Abstract: An organic light emitting display device and method of fabricating thereof is disclosed. The organic light emitting display device comprises a first substrate; a plurality of first bank layers arranged along a first direction and a second direction on the first substrate to define a plurality of pixels, where the first direction and the second direction are orthogonal; a plurality of second bank layers disposed along the first direction on the first bank layers to divide pixels columns of different colors; and an organic light emitting diode in each pixel, the organic light emitting diode including an organic light emitting layer having different thicknesses on different colored pixels, wherein the side surfaces of the second bank layer adjacent to the pixel columns of different colors are inclined, the inclined angle thereof is dependent upon a thickness of the organic light emitting layer in the pixel.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: June 29, 2021
    Assignee: LG Display Co., Ltd.
    Inventors: Hak-Min Lee, Nack-Youn Jung, Hee-Jin Kim, Myung-O Joo, Sung-Soo Park, Jeong-Mook Choi
  • Patent number: 10847590
    Abstract: An electroluminescent display device can include a plurality of sub-pixels arranged on a substrate along a first direction and a second direction; a light-emitting diode disposed at each sub-pixel and including a first electrode, a light-emitting layer and a second electrode; a first bank disposed between adjacent sub-pixels along the second direction and overlapping edges of the first electrode; a second bank having an opening corresponding to the sub-pixels arranged along the second direction and disposed between adjacent sub-pixels along the first direction; and a third bank on side surfaces of the second bank facing each other along the second direction.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: November 24, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Hak-Min Lee, Young-Jun Yu, Hee-Jin Kim, Myung-O Joo, Sung-Soo Park
  • Patent number: 10784460
    Abstract: Provided are an electroluminescent device and an electroluminescent display device. The electroluminescent device includes an anode and a cathode facing each other, a light compensation layer located between the anode and the cathode and having a first refractive index, and an emitting material layer located between the light compensation layer and the cathode, and having a second refractive index higher than the first refractive index.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: September 22, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Hak-Min Lee, Young-Jun Yu, Hee-Jin Kim, Sung-Soo Park
  • Publication number: 20200194522
    Abstract: An electroluminescent display device can include a plurality of sub-pixels arranged on a substrate along a first direction and a second direction; a light-emitting diode disposed at each sub-pixel and including a first electrode, a light-emitting layer and a second electrode; a first bank disposed between adjacent sub-pixels along the second direction and overlapping edges of the first electrode; a second bank having an opening corresponding to the sub-pixels arranged along the second direction and disposed between adjacent sub-pixels along the first direction; and a third bank on side surfaces of the second bank facing each other along the second direction.
    Type: Application
    Filed: December 6, 2019
    Publication date: June 18, 2020
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Hak-Min Lee, Young-Jun Yu, Hee-Jin Kim, Myung-O Joo, Sung-Soo Park
  • Publication number: 20200185471
    Abstract: An organic light emitting display device and method of fabricating thereof is disclosed. The organic light emitting display device comprises a first substrate; a plurality of first bank layers arranged along a first direction and a second direction on the first substrate to define a plurality of pixels, where the first direction and the second direction are orthogonal; a plurality of second bank layers disposed along the first direction on the first bank layers to divide pixels columns of different colors; and an organic light emitting diode in each pixel, the organic light emitting diode including an organic light emitting layer having different thicknesses on different colored pixels, wherein the side surfaces of the second bank layer adjacent to the pixel columns of different colors are inclined, the inclined angle thereof is dependent upon a thickness of the organic light emitting layer in the pixel.
    Type: Application
    Filed: December 5, 2019
    Publication date: June 11, 2020
    Inventors: Hak-Min LEE, Nack-Youn JUNG, Hee-Jin KIM, Myung-O JOO, Sung-Soo PARK, Jeong-Mook CHOI
  • Publication number: 20200185472
    Abstract: An organic light emitting display device and a method of fabricating thereof are discussed. The organic light emitting display device according to an example of the invention comprises a first substrate; a plurality of first bank layers arranged along a first direction and a second direction on the first substrate to define a plurality of pixels; a plurality of second bank layers disposed along the first direction on the first bank layers to divide columns of pixels having different colors; a plurality of third bank layers disposed along the second direction on the first bank layers; and an organic light emitting diode in each pixel, the organic light emitting diode including an organic light emitting layer, wherein the third bank layer is made of a same material as the second bank layer and the width of the third bank layer is smaller than that of the second bank layer.
    Type: Application
    Filed: December 11, 2019
    Publication date: June 11, 2020
    Applicant: LG Display Co., Ltd.
    Inventors: Sung-Soo Park, Nack-Youn Jung, Hee-Jin Kim, Hak-Min Lee, Myung-O Joo, Jeong-Mook Choi
  • Publication number: 20200176532
    Abstract: An electroluminescent display device includes an electroluminescent display device includes a substrate; a first pixel row on the substrate including a first plurality of pixels arranged along a first direction; a second pixel row on the substrate including a second plurality of pixels arranged along the first direction, the second pixel row being spaced apart from the first pixel row in a second direction; a first groove between the first and second pixel rows; and a light emitting diode in each pixel of the first and second pixel rows, wherein the first groove includes a first portion at one end of the first pixel row, a second portion at the other end of the first pixel row and a third portion between the first and second portions, and wherein third portion is smaller than the first portion and greater than the second portion.
    Type: Application
    Filed: August 30, 2019
    Publication date: June 4, 2020
    Applicant: LG Display Co., Ltd.
    Inventors: Jeong-Mook CHOI, Nack-Youn JUNG, Hee-Jin KIM, Hak-Min LEE, Myung-O JOO, Sung-Soo PARK
  • Publication number: 20200052240
    Abstract: Provided are an electroluminescent device and an electroluminescent display device. The electroluminescent device includes an anode and a cathode facing each other, a light compensation layer located between the anode and the cathode and having a first refractive index, and an emitting material layer located between the light compensation layer and the cathode, and having a second refractive index higher than the first refractive index.
    Type: Application
    Filed: October 17, 2019
    Publication date: February 13, 2020
    Inventors: Hak-Min LEE, Young-Jun YU, Hee-Jin KIM, Sung-Soo PARK
  • Patent number: 10483483
    Abstract: Provided are an electroluminescent device and an electroluminescent display device. The electroluminescent device includes an anode and a cathode facing each other, a light compensation layer located between the anode and the cathode and having a first refractive index, and an emitting material layer located between the light compensation layer and the cathode, and having a second refractive index higher than the first refractive index.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: November 19, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Hak-Min Lee, Young-Jun Yu, Hee-Jin Kim, Sung-Soo Park
  • Patent number: 10333107
    Abstract: An electroluminescent display device includes a substrate; a first electrode on the substrate; a hole auxiliary layer on the first electrode; a light emitting material layer on the hole auxiliary layer; an electron auxiliary layer on the light emitting material layer; a second electrode on the electron auxiliary layer; and insulation layers between the hole auxiliary layer and the light emitting material layer and between the electron auxiliary layer and the light emitting material layer, wherein a refractive index of the insulation layers is smaller than a refractive index of the light emitting material layer.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: June 25, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Hak-Min Lee, Hee-Jin Kim, Sung-Soo Park
  • Publication number: 20180190941
    Abstract: An electroluminescent display device includes a substrate; a first electrode on the substrate; a hole auxiliary layer on the first electrode; a light emitting material layer on the hole auxiliary layer; an electron auxiliary layer on the light emitting material layer; a second electrode on the electron auxiliary layer; and insulation layers between the hole auxiliary layer and the light emitting material layer and between the electron auxiliary layer and the light emitting material layer, wherein a refractive index of the insulation layers is smaller than a refractive index of the light emitting material layer.
    Type: Application
    Filed: December 19, 2017
    Publication date: July 5, 2018
    Inventors: Hak-Min LEE, Hee-Jin KIM, Sung-Soo PARK
  • Publication number: 20180175320
    Abstract: Provided are an electroluminescent device and an electroluminescent display device. The electroluminescent device includes an anode and a cathode facing each other, a light compensation layer located between the anode and the cathode and having a first refractive index, and an emitting material layer located between the light compensation layer and the cathode, and having a second refractive index higher than the first refractive index.
    Type: Application
    Filed: December 8, 2017
    Publication date: June 21, 2018
    Inventors: Hak-Min LEE, Young-Jun YU, Hee-Jin KIM, Sung-Soo PARK