Patents by Inventor Minki NAM

Minki NAM 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: 20210189233
    Abstract: A method for producing a quantum dot composition includes providing a preliminary quantum dot composition containing a quantum dot to which a ligand is bonded and a free ligand, providing an adsorbent to the preliminary quantum dot composition, adsorbing the free ligand to the adsorbent, and removing a modified adsorbent to which the free ligand is adsorbed to provide a purified quantum dot composition. A light emitting element including the purified quantum dot composition may have superior luminous efficiency.
    Type: Application
    Filed: July 23, 2020
    Publication date: June 24, 2021
    Inventors: Yunku JUNG, Yunhyuk KO, Minki NAM, Sooho LEE
  • Publication number: 20210091324
    Abstract: A quantum dot composition includes a quantum dot, and a ligand bonded to a surface of the quantum dot, wherein the ligand includes a body part including a charge transport moiety, and a head part bonded to the surface of the quantum dot. The quantum dot composition according may be applied to a light emitting diode and a display device to provide increased luminous efficiency and device life of the light emitting diode and the display device.
    Type: Application
    Filed: June 4, 2020
    Publication date: March 25, 2021
    Inventors: Yunku JUNG, Hyunmi DOH, JAE HONG PARK, Dongwoo SHIN, Jaekook HA, SUNGWOON KIM, MINKI NAM
  • Publication number: 20210074939
    Abstract: A quantum dot composition includes a quantum dot, a ligand to bind to a surface of the quantum dot, an additive having an amine group, and a precursor comprising an organometallic compound, the composition forming a modified quantum dot having a reformed surface characteristic. A light emitting element including the modified quantum dot may have improved lifespan, luminous efficiency, and material stability.
    Type: Application
    Filed: June 8, 2020
    Publication date: March 11, 2021
    Inventors: Yunku JUNG, Minki NAM, Hyunmi DOH, Yunhyuk KO, Sungwoon KIM, Jaehoon KIM, Myoungjin PARK, Jae Hong PARK, Junwoo PARK
  • Publication number: 20210066632
    Abstract: A quantum dot composition includes quantum dots and a leveling agent, wherein the leveling agent includes a first repeating unit represented by Formula 1 and a second repeating unit represented by Formula 2: A light-emitting device and a method of manufacturing the same are also provided.
    Type: Application
    Filed: April 22, 2020
    Publication date: March 4, 2021
    Inventors: Minki NAM, Yunku JUNG, Jaehong PARK, Dukki KIM, Sungwoon KIM
  • Publication number: 20210041747
    Abstract: A display device includes: a display substrate; a light amount control layer on the display substrate; a first polarizer on the light amount control layer; and a color conversion layer on the first polarizer. The color conversion layer includes a phosphor, the phosphor includes a quantum dot, the quantum dot including: a core; a first shell surrounding the core; and a second shell surrounding the first shell, and the quantum dot has a diameter ranging from about 2 nm to about 32 nm.
    Type: Application
    Filed: October 26, 2020
    Publication date: February 11, 2021
    Inventors: Minki NAM, Kyoungwon PARK, Baekhee LEE, Youngmin KIM, Haeil PARK, Jaikyeong KIM, Heesuk KIM, Wanki BAE, Dohchang LEE, Byeongguk JEONG
  • Publication number: 20210035962
    Abstract: Provided is a light emitting element according to embodiments which includes a body including a semiconductor layer and an active layer, and a ligand including a head portion bonded to a surface of the body, an end portion spaced apart from the body, and having a positive or a negative charge, and a chain portion connecting the head portion and the end portion.
    Type: Application
    Filed: July 17, 2020
    Publication date: February 4, 2021
    Inventors: Yunku JUNG, Sungwoon KIM, Changhee LEE, Jaekook HA, Yunhyuk KO, Jaehoon KIM, Minki NAM, Hyunmi DOH, Myoungjin PARK, Jae Hong PARK, Junwoo PARK
  • Patent number: 10852587
    Abstract: A display device includes: a display substrate; a light amount control layer on the display substrate; a first polarizer on the light amount control layer; and a color conversion layer on the first polarizer. The color conversion layer includes a phosphor, the phosphor includes a quantum dot, the quantum dot including: a core; a first shell surrounding the core; and a second shell surrounding the first shell, and the quantum dot has a diameter ranging from about 2 nm to about 32 nm.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: December 1, 2020
    Inventors: Minki Nam, Kyoungwon Park, Baekhee Lee, Youngmin Kim, Haeil Park, Jaikyeong Kim, Heesuk Kim, Wanki Bae, Dohchang Lee, Byeongguk Jeong
  • Publication number: 20200328367
    Abstract: A light emitting device may include a first electrode, a second electrode opposite to the first electrode, and an emission layer disposed between the first electrode and the second electrode. The emission layer may include a manganese complex compound and a quantum dot. It is possible to improve life span and light emitting efficiency characteristics of the light emitting device.
    Type: Application
    Filed: March 6, 2020
    Publication date: October 15, 2020
    Inventors: Kyoungwon PARK, Minki NAM, Hyunmi DOH, Sungwoon KIM, Jae Hong PARK, Yunku JUNG
  • Patent number: 10768470
    Abstract: A color conversion panel includes a color base substrate including a first transmissive area, a second transmissive area and a third transmissive area; a light blocking pattern on the color base substrate and defining the first transmissive area, the second transmissive area, and the third transmissive area; a first color filter in the first transmissive area and the second transmissive area; a first color conversion layer on the first color filter at the first transmissive area; a second color conversion layer on the first color filter in the second transmissive area; and a second color filter on the first transmissive area, the second transmissive area, and the third transmissive area. The first color conversion layer and the second color conversion layer are each between the first color filter and the second color filter.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: September 8, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kyoungwon Park, Soodong Kim, Minki Nam, Sungwoon Kim
  • Patent number: 10761363
    Abstract: A method of fabricating a display device may include the following steps: patterning a light blocking layer on a first surface of a first substrate, forming a color filter layer on a second surface of the first substrate opposite the first surface after the patterning of the light blocking layer, and forming a light conversion layer including a plurality of conversion filters on the first surface of the first substrate after the forming of the color filter layer. Each of the conversion filters may include a plurality of conversion particles, and the color filter layer may be formed to selectively transmit light emitted from each of the conversion filters.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: September 1, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Soodong Kim, Jinwon Kim, Taeho Kim, Minki Nam, Kyoungwon Park
  • Publication number: 20190331963
    Abstract: A display device includes: a light source unit having: a first light source to emit first light having a first peak wavelength; and a second light source to emit second light having a second peak wavelength, the second peak wavelength being shorter than the first peak wavelength; a wavelength conversion member to absorb the second light and convert the second light into first color light and second color light, each of the first and second color light having peak wavelengths different from the first and second peak wavelengths; and a display panel having a first pixel area to display the first color light, a second pixel area to display the second color light, and a third pixel area to display the first light, wherein the first peak wavelength and the second peak wavelength have a value of about 365 nm or more to about 500 nm or less.
    Type: Application
    Filed: April 17, 2019
    Publication date: October 31, 2019
    Inventors: Dong-uk KIM, Minki Nam, Kyoungwon Park
  • Publication number: 20190302519
    Abstract: A color conversion panel includes a color base substrate including a first transmissive area, a second transmissive area and a third transmissive area; a light blocking pattern on the color base substrate and defining the first transmissive area, the second transmissive area, and the third transmissive area; a first color filter in the first transmissive area and the second transmissive area; a first color conversion layer on the first color filter at the first transmissive area; a second color conversion layer on the first color filter in the second transmissive area; and a second color filter on the first transmissive area, the second transmissive area, and the third transmissive area. The first color conversion layer and the second color conversion layer are each between the first color filter and the second color filter.
    Type: Application
    Filed: November 9, 2018
    Publication date: October 3, 2019
    Inventors: Kyoungwon PARK, Soodong KIM, Minki NAM, Sungwoon KIM
  • Patent number: 10385268
    Abstract: A photosensitive resin composition comprises: a solvent in an amount of about 60 percentage by weight (wt %) to about 95 wt %; and a solid content in an amount of about 5 wt % to about 40 wt %, with respect to a total weight of the photosensitive resin composition, wherein the solid content comprises with respect to a total weight of the solid content: a phosphor in an amount of about 5 wt % to about 90 wt %; a photopolymerizable compound in an amount of about 4 wt % to about 70 wt %; an acetophenone-based photopolymerization initiator in an amount of about 0.1 wt % to about 20 wt %; and an alkali soluble resin in an amount of about 5 wt % to about 80 wt %, with respect to a total weight of the solid content.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: August 20, 2019
    Assignees: Samsung Display Co., Ltd., DONGWOO FINE-CHEM CO., LTD.
    Inventors: Baekhee Lee, Minki Nam, Junghyun Kwon, Youngmin Kim, Namseok Roh, Haeil Park, Seontae Yoon, Donguk Kim, Kisoo Park, Kwangkeun Lee, Junhan Lee, Juho Kim, Hyounwoo Kim, Hunsik Kim, Jongsoo Lee
  • Publication number: 20190227431
    Abstract: A photoresist resin composition including: a plurality of quantum dots; a photopolymerizable monomer; a photopolymerization initiator; a scatterer; a binder resin; and a solvent, wherein an amount of the scatterer is in a range of about 2 parts to about 20 parts by weight based on 100 parts by weight of a total amount of the photoresist resin composition.
    Type: Application
    Filed: January 23, 2019
    Publication date: July 25, 2019
    Inventors: Kyoungwon PARK, Songyi Kim, Minki Nam, Sujin Kim, Jinwon Kim, Taeho Kim
  • Publication number: 20190229153
    Abstract: A display device includes semiconductor nanoparticles. An organic light emitting diode (“OLED”) display device includes the semiconductor nanoparticles, a semiconductor particle of the semiconductor nanoparticles including: a core including a compound semiconductor; and a shell surrounding the core. The shell includes a metal oxide (and/or metalloid oxide) having a bandgap of about 3.5 eV or more, and having a sum (?ECB+?EVB) of a conduction band offset (?ECB) with the compound semiconductor included in the core and a valence band offset (?EVB) with the compound semiconductor included in the core of about 3 eV or more.
    Type: Application
    Filed: November 9, 2018
    Publication date: July 25, 2019
    Inventors: Kyoungwon PARK, Minki NAM, Songyi KIM, Sungwoon KIM, Sungjun KOH, Seongwon MO, Dohchang LEE
  • Publication number: 20190025638
    Abstract: A method of fabricating a display device may include the following steps: patterning a light blocking layer on a first surface of a first substrate, forming a color filter layer on a second surface of the first substrate opposite the first surface after the patterning of the light blocking layer, and forming a light conversion layer including a plurality of conversion filters on the first surface of the first substrate after the forming of the color filter layer. Each of the conversion filters may include a plurality of conversion particles, and the color filter layer may be formed to selectively transmit light emitted from each of the conversion filters.
    Type: Application
    Filed: May 4, 2018
    Publication date: January 24, 2019
    Inventors: Soodong Kim, Jinwon Kim, Taeho Kim, Minki Nam, Kyoungwon Park
  • Patent number: 10162259
    Abstract: A photoresist composition including a photoresist composition includes a photo-luminescence nanocomposite, a photopolymerizable monomer, a first photopolymerization initiator, a second photopolymerization initiator, a binder resin, and a solvent. The photo-luminescence nanocomposite includes a first quantum dot nanocomposite, a second quantum dot nanocomposite, or a combination thereof. The first quantum dot nanocomposite includes a first quantum dot nanoparticle and a first coating layer surrounding the first quantum dot nanoparticle, the first coating layer including a first inorganic material. The second quantum dot nanocomposite includes a second quantum dot nanoparticle and a second coating layer surrounding the second quantum dot nanoparticle, the second coating layer including a second inorganic material.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: December 25, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Minki Nam, Kyoungwon Park, Baekhee Lee, Youngmin Kim, Haeil Park
  • Patent number: 9952462
    Abstract: A display device includes: a first substrate; a support layer defining a microcavity above the first substrate; a liquid crystal layer disposed in the microcavity; a planarization layer disposed on the support layer; and a blue-light transmission layer disposed between the support layer and the planarization layer. The display device has improved light extraction efficiency and process efficiency.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: April 24, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seontae Yoon, Junghyun Kwon, Minki Nam, Haeil Park, Kwangkeun Lee, Junhan Lee
  • Publication number: 20180074401
    Abstract: A photoresist composition including a photoresist composition includes a photo-luminescence nanocomposite, a photopolymerizable monomer, a first photopolymerization initiator, a second photopolymerization initiator, a binder resin, and a solvent. The photo-luminescence nanocomposite includes a first quantum dot nanocomposite, a second quantum dot nanocomposite, or a combination thereof. The first quantum dot nanocomposite includes a first quantum dot nanoparticle and a first coating layer surrounding the first quantum dot nanoparticle, the first coating layer including a first inorganic material. The second quantum dot nanocomposite includes a second quantum dot nanoparticle and a second coating layer surrounding the second quantum dot nanoparticle, the second coating layer including a second inorganic material.
    Type: Application
    Filed: September 7, 2017
    Publication date: March 15, 2018
    Inventors: Minki NAM, Kyoungwon PARK, Baekhee LEE, Youngmin KIM, Haeil PARK
  • Publication number: 20180059485
    Abstract: A display device includes: a display substrate; a light amount control layer on the display substrate; a first polarizer on the light amount control layer; and a color conversion layer on the first polarizer. The color conversion layer includes a phosphor, the phosphor includes a quantum dot, the quantum dot including: a core; a first shell surrounding the core; and a second shell surrounding the first shell, and the quantum dot has a diameter ranging from about 2 nm to about 32 nm.
    Type: Application
    Filed: August 29, 2017
    Publication date: March 1, 2018
    Inventors: Minki NAM, Kyoungwon PARK, Baekhee LEE, Youngmin KIM, Haeil PARK, Jaikyeong KIM, Heesuk KIM, Wanki BAE, Dohchang LEE, Byeongguk JEONG