Patents by Inventor Woo-Man Ji

Woo-Man Ji 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: 20240276826
    Abstract: A display device includes: a pixel electrode layer disposed on a substrate, a light emitting layer disposed on the pixel electrode layer, a bank layer disposed on the light emitting layer and defining first, second, and third openings, a first color conversion layer disposed in the first opening and including first quantum dots, and a scattering layer disposed in a layer between the pixel electrode and the bank layer, such that the scattering layer and at least a part of the first color conversion layer cover mutually exclusive parts of the substrate, the scattering layer including a base resin and a plurality of scattering particles dispersed in the base resin.
    Type: Application
    Filed: December 13, 2023
    Publication date: August 15, 2024
    Inventors: SANGJI PARK, CHEOL SHIN, KEUNCHAN OH, DOKYUNG YOUN, SONGEE LEE, SUN-KYU JOO, WOO-MAN JI, WONSUK HAN, TAE HYUNG HWANG
  • Publication number: 20240244935
    Abstract: A display device includes a display panel, a first light conversion layer, a second light conversion layer, and a light transmission layer, which are disposed on the display panel and spaced apart from each other, a plurality of bank layers, each of which is disposed on the display panel and which are disposed between the first light conversion layer and the second light conversion layer and between the light transmission layer and each of the first and second light conversion layers, a spacer, which is disposed below a bank layer of the bank layers and faces the display panel, and a plurality of lenses which are disposed below the first light conversion layer, the second light conversion layer, and the light transmission layer, and face the display panel. The spacer and the plurality of lenses may be disposed in a same layer.
    Type: Application
    Filed: November 1, 2023
    Publication date: July 18, 2024
    Inventors: DOKYUNG YOUN, SANGJI PARK, CHEOL SHIN, KEUNCHAN OH, SONGEE LEE, SUN-KYU JOO, WOO-MAN JI, YOUYOUNG JIN, TAE HYUNG HWANG
  • Publication number: 20240237469
    Abstract: A display device includes: a blue color filter layer in a blue transmission region of an upper substrate, and including first scattering particles; a green color filter layer in a green transmission region of the upper substrate, and including second scattering particles; a red color filter layer in a red transmission region of the upper substrate; a partition wall on the upper substrate and defining a blue transmission opening, a green transmission opening, and a red transmission opening, which overlap the blue transmission region, the green transmission region, and the red transmission region, respectively; a color conversion layer including red color conversion particles and third scattering particles, and accommodated in the red transmission opening; a light emitting element layer on a lower substrate facing the upper substrate; and a filling material between the upper substrate and the lower substrate.
    Type: Application
    Filed: August 16, 2023
    Publication date: July 11, 2024
    Inventors: SUN-KYU JOO, DAEHYEON KIM, Hong Il Kim, SANGJI PARK, KEUNCHAN OH, DOKYUNG YOUN, SONGEE LEE, CHANG-MIN LEE, HYUNSHIK LEE, WOO-MAN JI, TAE HYUNG HWANG
  • Publication number: 20240142678
    Abstract: A display device includes a display unit including a lower substrate and first, second, and third light emitting elements disposed on the lower substrate, a color filter unit including an upper substrate having a lower surface facing the first, second, and third light emitting elements, a filler disposed between the display unit and the color filter unit and including a wavelength conversion particle. The color filter unit further includes a color filter layer including first, second, and third color filters disposed on the lower surface of the upper substrate, a bank layer disposed below the color filter layer and including first, second, and third openings, a first column spacer filling the first opening, and a second column spacer filling the second opening.
    Type: Application
    Filed: July 25, 2023
    Publication date: May 2, 2024
    Applicant: Samsung Display Co., LTD.
    Inventors: SUN-KYU JOO, SANGJI PARK, JAE CHEOL PARK, KEUNCHAN OH, DOKYUNG YOUN, SONGEE LEE, WOO-MAN JI, TAE HYUNG HWANG
  • Publication number: 20240138226
    Abstract: A display device includes: a blue color filter layer in a blue transmission region of an upper substrate, and including first scattering particles; a green color filter layer in a green transmission region of the upper substrate, and including second scattering particles; a red color filter layer in a red transmission region of the upper substrate; a partition wall on the upper substrate and defining a blue transmission opening, a green transmission opening, and a red transmission opening, which overlap the blue transmission region, the green transmission region, and the red transmission region, respectively; a color conversion layer including red color conversion particles and third scattering particles, and accommodated in the red transmission opening; a light emitting element layer on a lower substrate facing the upper substrate; and a filling material between the upper substrate and the lower substrate.
    Type: Application
    Filed: August 15, 2023
    Publication date: April 25, 2024
    Inventors: SUN-KYU JOO, DAEHYEON KIM, Hong Il Kim, SANGJI PARK, KEUNCHAN OH, DOKYUNG YOUN, SONGEE LEE, CHANG-MIN LEE, HYUNSHIK LEE, WOO-MAN JI, TAE HYUNG HWANG
  • Publication number: 20240016041
    Abstract: A color conversion substrate includes: a blue color filter on an upper substrate; a first color filter on the blue color filter, and exposing the blue color filter in a blue opening area; a partition on the blue color filter and the first color filter, and surrounding the blue opening area; a first color conversion pattern on the first color filter, overlapping with the first color filter, and accommodated by the partition; and a filler on the blue color filter, accommodated by the partition in the blue opening area, and covering the first color conversion pattern.
    Type: Application
    Filed: May 3, 2023
    Publication date: January 11, 2024
    Inventors: SUN-KYU JOO, KEUNCHAN OH, TAIMEI KODAIRA, SANGJI PARK, DOKYUNG YOUN, WOO-MAN JI, TAE HYUNG HWANG
  • Publication number: 20230335686
    Abstract: A color conversion panel includes a plurality of banks which partition a first emission area, a second emission area and a third emission area of the color conversion panel at which light of different colors are respectively emitted, a color conversion layer which color-converts light, in the first emission area, and a transmission layer which transmits light without color conversion, in the second emission area and the third emission area.
    Type: Application
    Filed: February 10, 2023
    Publication date: October 19, 2023
    Inventors: Sun-Kyu JOO, Keun Chan OH, Min-Jae KIM, Jae Cheol PARK, DOKYUNG YOUN, Yeo Geon YOON, Chang-Hun LEE, Woo-Man JI
  • Publication number: 20230309358
    Abstract: A display device includes a first substrate including first to third light emitting areas, and a light blocking area surrounding first to third light emitting area, light emitting elements disposed on the first to third light emitting areas of a first substrate, a bank disposed on light emitting elements, where first to third openings exposing light emitting elements are defined in the bank, a first color conversion pattern disposed in the first opening to convert a light of a first wavelength into a light of a second wavelength, a second color conversion pattern disposed in the second opening to convert the light of the first wavelength into a light of a third wavelength, a light transmission pattern disposed in the third opening to transmit the light of the first wavelength, and a column spacer disposed on the bank and having a same composition as the light transmission pattern.
    Type: Application
    Filed: November 16, 2022
    Publication date: September 28, 2023
    Inventors: SUN-KYU JOO, KEUNCHAN OH, MIN-JAE KIM, JAE CHEOL PARK, DOKYUNG YOUN, YEOGEON YOON, CHANG-HUN LEE, WOO-MAN JI
  • Publication number: 20230209959
    Abstract: A display device includes: a substrate including a first emission area, a second emission area, and a third emission area; a first wavelength conversion pattern overlapping the first emission area; a second wavelength conversion pattern overlapping the second emission area; and a light-transmitting pattern overlapping the third emission area, wherein the first wavelength conversion pattern includes first wavelength shifters configured to convert a first light into a second light, and first scatterers, the second wavelength conversion pattern includes second wavelength shifters configured to convert the first light into a third light, and second scatterers, and a ratio between a concentration of the first wavelength shifters and a concentration of the second wavelength shifters is 1:1.1 to 1:1.3.
    Type: Application
    Filed: September 21, 2022
    Publication date: June 29, 2023
    Inventors: Young Soo KWON, Sun Young KWON, Min Seok KIM, Bu Yong KIM, Song Yi KIM, Soo Dong KIM, Su Jin KIM, Jin Won KIM, Da Hye PARK, Dong Gyu BAECK, Hye Jin PAEK, Tae Young SONG, Keun Chan OH, Won Gap YOON, Ki Heon LEE, Myung Jin LEE, Hyeok Jin LEE, Woo Man JI, Ho Yeon JI, Yong Seok CHOI
  • Publication number: 20230189610
    Abstract: A display device includes a lower panel including a display element layer and an encapsulation layer disposed on the display element layer, an upper panel including a partition pattern including a first opening and a second opening, and a light control layer including a light control part disposed in the first opening, a protective layer disposed between the upper panel and the lower panel to overlap at least one of the first opening or the second opening and the partition pattern in a plan view, and a filling layer disposed between the protective layer and the lower panel.
    Type: Application
    Filed: September 16, 2022
    Publication date: June 15, 2023
    Applicant: Samsung Display Co., Ltd.
    Inventors: DOKYUNG YOUN, KEUNCHAN OH, SUN-KYU JOO, MIN-JAE KIM, JAE CHEOL PARK, CHANG-HUN LEE, WOO-MAN JI
  • Publication number: 20230050437
    Abstract: A quantum dot composition includes a scatterer containing an inorganic material, a quantum dot containing a core and a shell surrounding the core, a ligand binding to the quantum dot, a polymer resin in which the quantum dot and the scatterer are dispersed, and a dispersant containing at least one of an acidic substituent or a basic substituent. At least one of the polymer resin or the dispersant includes a same material as the shell and the ligand binds to the polymer resin or dispersant that includes the same material as a shell.
    Type: Application
    Filed: May 10, 2022
    Publication date: February 16, 2023
    Inventors: SOODONG KIM, Woo-Man Ji
  • Patent number: 11450715
    Abstract: A display device includes a base substrate, a plurality of display elements, a first light control layer, and a second light control layer. The base substrate includes a pixel region and a peripheral region adjacent to the pixel region. The display elements are disposed on the base substrate, overlap the pixel region in a plan view, and are configured to generate a first light. The first light control layer is disposed on the display elements, and includes a transmission part configured to transmit the first light, a first light conversion part configured to convert the first light into a second light, and a second light conversion part configured to convert the first light into a third light. The second light control layer overlaps at least a portion of the first light conversion part in the plan view and is configured to convert the first light into the second light.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: September 20, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Soodong Kim, YongSeok Choi, Sujin Kim, Woo-Man Ji, Hoyeon Ji
  • Patent number: 11398531
    Abstract: Provided is a display device including a first base substrate, a plurality of pixels disposed on the first base substrate and each of which including a pixel area and a non-pixel area around the pixel area, a second base substrate facing the first base substrate with the pixels therebetween, and a plurality of light conversion layers disposed under the second base substrate and overlapping the pixel areas of the pixels, wherein the second base substrate includes a first part overlapping the non-pixel area, and a second part around the first part, wherein a refractive index of the first part is different from a refractive index of the second part.
    Type: Grant
    Filed: May 5, 2020
    Date of Patent: July 26, 2022
    Inventors: Jang Wi Ryu, Songyi Kim, Sujin Kim, Woo-Man Ji
  • Publication number: 20220223653
    Abstract: A display panel includes a display layer including a light emitting element generating a source light, a first color filter on the display layer, a first color control layer between the display layer and the first color filter and including a first surface facing the first display layer and a second surface facing the first color filter, and a plurality of capping layers encapsulating the first color control layer. Among the capping layers, a capping layer between the first surface of the first color control layer and the display layer has a first-first thickness that is different from a second-first thickness of a capping layer between the second surface of the first color control layer and the first color filter.
    Type: Application
    Filed: November 17, 2021
    Publication date: July 14, 2022
    Inventors: JINWON KIM, BUYONG KIM, SUJIN KIM, KIHEON LEE, WOO-MAN JI, HOYEON JI, YONGSEOK CHOI
  • Publication number: 20200381483
    Abstract: Provided is a display device including a first base substrate, a plurality of pixels disposed on the first base substrate and each of which including a pixel area and a non-pixel area around the pixel area, a second base substrate facing the first base substrate with the pixels therebetween, and a plurality of light conversion layers disposed under the second base substrate and overlapping the pixel areas of the pixels, wherein the second base substrate includes a first part overlapping the non-pixel area, and a second part around the first part, wherein a refractive index of the first part is different from a refractive index of the second part.
    Type: Application
    Filed: May 5, 2020
    Publication date: December 3, 2020
    Inventors: JANG WI RYU, Songyi KIM, Sujin KIM, Woo-Man JI
  • Publication number: 20200312916
    Abstract: A display device includes a base substrate, a plurality of display elements, a first light control layer, and a second light control layer. The base substrate includes a pixel region and a peripheral region adjacent to the pixel region. The display elements are disposed on the base substrate, overlap the pixel region in a plan view, and are configured to generate a first light. The first light control layer is disposed on the display elements, and includes a transmission part configured to transmit the first light, a first light conversion part configured to convert the first light into a second light, and a second light conversion part configured to convert the first light into a third light. The second light control layer overlaps at least a portion of the first light conversion part in the plan view and is configured to convert the first light into the second light.
    Type: Application
    Filed: February 19, 2020
    Publication date: October 1, 2020
    Inventors: Soodong KIM, YongSeok CHOI, Sujin KIM, Woo-Man JI, Hoyeon JI
  • Patent number: 9989683
    Abstract: A color filter comprises a red color filter, a green color filter, and a blue color filter, wherein the green color filter comprises a cyan pigment satisfying the following equation: A ? ? 2 A ? ? 1 = 0 where A1 denotes the absorbance of the cyan pigment in a wavelength range of about 600 nm to about 700 nm and A2 denotes the absorbance of the cyan pigment in a wavelength range of about 450 nm to about 500 nm.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: June 5, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun Jin Kim, Su Jeong Kim, Dae Won Lee, Woo Man Ji, Chul Huh
  • Publication number: 20170045654
    Abstract: A color filter comprises a red color filter, a green color filter, and a blue color filter, wherein the green color filter comprises a cyan pigment satisfying the following equation: A ? ? 2 A ? ? 1 = 0 where A1 denotes the absorbance of the cyan pigment in a wavelength range of about 600 nm to about 700 nm and A2 denotes the absorbance of the cyan pigment in a wavelength range of about 450 nm to about 500 nm.
    Type: Application
    Filed: March 28, 2016
    Publication date: February 16, 2017
    Inventors: Hyun Jin KIM, Su Jeong KIM, Dae Won LEE, Woo Man JI, Chul HUH
  • Patent number: 9081235
    Abstract: A display panel includes a first substrate, a second substrate and a spacer disposed there between. The second substrate includes a black matrix pattern, a color filter, a dummy color filter and a common electrode. The black matrix pattern is formed with an opening portion which is filled by the color filter. The dummy color filter is made of same material as the color filter and extends in a vertical direction along which the spacer also extends. The spacer is formed between the first substrate and the second substrate in correspondence with location of the dummy color filter so that the effective spaced apart distance that the spacer provides between the first and second substrates is a function of a thickness of the dummy color filter.
    Type: Grant
    Filed: May 25, 2011
    Date of Patent: July 14, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Woo-Man Ji, Cheon-Jae Maeng, Jang-Soo Kim, Sang-Ho Kim
  • Patent number: 8223300
    Abstract: A color filter may include a red pigment as a main component of a pigment, and at least one of a green pigment and a blue pigment as an additional pigment at 0.5-10 wt % among the entire pigment. The color filter may include a green pigment as a main component of a pigment, and at least one of a red pigment, a blue pigment, and a violet pigment at 0.5-10 wt % as an additional pigment among the entire pigment. The color filter may include a blue pigment as the main component of the pigment, and at least one of a red pigment and a green pigment as the additional pigment at 0.5-10 wt % among the entire pigment.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: July 17, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seok-Yoon Yang, Ji-Young Jeong, Ju-Yong Park, Woo-Man Ji