Patents by Inventor Chul-Jong YOO
Chul-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).
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Publication number: 20230352640Abstract: A includes a substrate including a plurality of pixels, a plurality of transistors disposed on the substrate, a passivation layer overlapping the plurality of transistors, a first electrode and a second electrode disposed on the passivation layer and spaced apart from each other, an insulating layer disposed on the first electrode and the second electrode, a plurality of light emitting elements disposed between the first electrode and the second electrode on the insulating layer and electrically connected to the first electrode and the second electrode, and an insulating reflective layer disposed between the passivation layer and the plurality of light emitting elements.Type: ApplicationFiled: August 3, 2021Publication date: November 2, 2023Applicant: SAMSUNG DISPLAY CO., LTD.Inventors: Chul Jong YOO, Dong Eon LEE, Myeong Hee KIM, Hoo Keun PARK, Byung Ju LEE, So Young LEE, Seung Geun LEE, Seung A LEE, Jong Won LEE, Ji Hyun HAM
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Publication number: 20230282778Abstract: A light-emitting element comprises a core comprising a first semiconductor layer, a second semiconductor layer provided on the first semiconductor layer, and an emissive layer provided between the first semiconductor layer and the second semiconductor layer, and a first element insulating film around a side surface of the core, wherein the first element insulating film comprises a composite of an insulating member and an elastic member.Type: ApplicationFiled: November 22, 2022Publication date: September 7, 2023Inventors: Dong Gyun KIM, Jun Bo SIM, Hee Yeon YOO, Jeong In CHOI, Chul Jong YOO, Yo Han LEE, Sung Ae JANG, Hyun Min CHO, Hyung Rae CHA
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Publication number: 20230027490Abstract: A display device includes a first electrode, a second electrode disposed spaced apart from the first electrode in a first direction, and an element part disposed between the first electrode and the second electrode. The element part includes light-emitting elements that have a shape extending in one direction and are arranged spaced apart from each other in a second direction perpendicular to the first direction; and a binder surrounding each of the light-emitting elements and fixing the light-emitting elements. The one direction in which the light-emitting elements extend is parallel to the first direction.Type: ApplicationFiled: December 15, 2020Publication date: January 26, 2023Applicant: Samsung Display Co., LTD.Inventors: Hye Lim KANG, Dong Gyun KIM, Hoo Keun PARK, Moon Jung AN, Chul Jong YOO, Dong Eon LEE
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Publication number: 20230006119Abstract: A display device may include a substrate including pixel areas, and a pixel disposed in each of the pixel area. The pixel may include a transistor and a driving voltage line disposed in the substrate, first and second electrodes spaced apart from each other, a bank pattern disposed on the first and second electrodes, respectively, intermediate layers disposed on the bank pattern, light emitting elements disposed between two adjacent intermediate layers of the intermediate layers, a first contact electrode disposed on one of the two adjacent intermediate layers and electrically connected to an end of each of the light emitting elements, and a second contact electrode disposed on another one of the two adjacent intermediate layers and electrically connected to another end of each of the light emitting elements.Type: ApplicationFiled: November 13, 2020Publication date: January 5, 2023Applicant: SAMSUNG DISPLAY CO., LTD.Inventors: Won Sik OH, Su Mi MOON, Sin Chul KANG, Hyun Min CHO, Xinxing LI, Chul Jong YOO
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Publication number: 20230006095Abstract: A light-emitting element including: a first semiconductor layer doped with a first type of dopant; a second semiconductor layer doped with a second type of dopant that is different from the first type of dopant; and an active layer between the first semiconductor layer and the second semiconductor layer, wherein a length of the light-emitting element measured in a first direction, which may be a direction in which the first semiconductor layer, the active layer, and the second semiconductor layer may be arranged, may be shorter than the width measured in a second direction that is perpendicular to the first direction.Type: ApplicationFiled: December 7, 2020Publication date: January 5, 2023Inventors: Hoo Keun PARK, Moon Jung AN, Dong Eon LEE, Chul Jong YOO, Hye Lim KANG, Dong Gyun KIM
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Publication number: 20220376144Abstract: A light emitting element includes: a first semiconductor layer doped with a first polarity; a second semiconductor layer doped with a second polarity different from the first polarity; an active layer between the first semiconductor layer and the second semiconductor layer in a first direction; and an insulating film surrounding an outer surface of at least the active layer and extending in the first direction. A thickness of a first portion of the insulating film surrounding the active layer is in a range of 10% to 16% of a diameter of the active layer.Type: ApplicationFiled: February 27, 2020Publication date: November 24, 2022Inventors: Moon Jung AN, Sung Chan JO, Hoo Keun PARK, Chul Jong YOO, Hye Lim KANG, Dong Gyun KIM, Dong Eon LEE, Hyun Min CHO
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Publication number: 20220367756Abstract: A light emitting element includes: a first semiconductor layer doped with a first polarity; a second semiconductor layer doped with a second polarity different from the first polarity; an active layer between the first semiconductor layer and the second semiconductor layer in a first direction; a first outer film around an outer surface of at least the active layer and extending in the first direction; and a second outer film around an outer surface of a portion of the first semiconductor layer on which the first outer film is not present.Type: ApplicationFiled: February 27, 2020Publication date: November 17, 2022Inventors: Dong Eon LEE, Hoo Keun PARK, Moon Jung AN, Chul Jong YOO, Hye Lim KANG, Dong Gyun KIM
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Publication number: 20220336711Abstract: A light-emitting element and a display device including the same are provided. The light-emitting element comprises a first semiconductor layer doped with an n-type dopant, a second semiconductor layer disposed below the first semiconductor layer and doped with a p-type dopant, a light-emitting layer disposed between the first semiconductor layer and the second semiconductor layer, a first intermediate layer disposed on the first semiconductor layer, and including a metal, and an electrode layer disposed on the first intermediate layer. Light from the light-emitting layer transmits through the first semiconductor layer, the first intermediate layer, and the electrode layer at a transmittance equal to or greater than about 70%.Type: ApplicationFiled: March 15, 2022Publication date: October 20, 2022Applicants: Samsung Display Co., LTD., POSTECH Research and Business Development FoundationInventors: Se Young KIM, Jong Lam LEE, Won Seok CHO, Dong Uk KIM, Jae Yong PARK, Chul Jong YOO
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Publication number: 20220190025Abstract: 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: ApplicationFiled: August 13, 2021Publication date: June 16, 2022Applicant: Samsung Display Co., LTD.Inventors: Chul Jong YOO, Dong Uk KIM, Se Young KIM, So Young LEE, Hyung Rae CHA
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Publication number: 20220173158Abstract: A display device includes a first subpixel and a second subpixel, wherein the first subpixel includes a first light source unit including a plurality of first light-emitting elements configured to emit first light having a center wavelength of a first wavelength, the second subpixel includes a second light source unit including a plurality of second light-emitting elements configured to emit second light having a center wavelength of a second wavelength, the first light source unit includes first to nth light-emitting groups that are connected in series, each of the groups including the plurality of first light-emitting elements, the second light source unit includes first to mth light-emitting groups that are connected in series and each of the groups includes the plurality of second light-emitting elements, where n and m are natural numbers, and the second wavelength is different from the first wavelength.Type: ApplicationFiled: November 5, 2021Publication date: June 2, 2022Inventors: Seung Geun LEE, Byung Ju LEE, Hoo Keun PARK, Chul Jong YOO, Dong Eon LEE
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Publication number: 20220173277Abstract: A display device, a light-emitting element, and a method of manufacturing a light-emitting element are provided. A display device includes: a first electrode and a second electrode spaced apart from each other; and light-emitting elements between the first electrode and the second electrode, and each of the light-emitting elements includes a first area having a first diameter, a second area having a second diameter greater than the first diameter, a first insulating film surrounding the first area, and a second insulating film on the first insulating film, and the second insulating film surrounds the second area exposed by the first insulating film.Type: ApplicationFiled: July 29, 2021Publication date: June 2, 2022Inventors: So Young LEE, Dong Uk KIM, Chul Jong YOO, Se Young KIM
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Publication number: 20220077350Abstract: A light emitting element and a display device including the same are provided. The light emitting element includes: a first semiconductor layer, a second semiconductor layer, and an active layer between the first semiconductor layer and the second semiconductor layer; a passivation layer surrounding an outer surface of at least one selected from the first semiconductor layer, the second semiconductor layer, and the active layer; and an insulation layer surrounding an outer surface of the passivation layer, wherein the passivation layer includes a two-dimensional (2D) material.Type: ApplicationFiled: May 4, 2021Publication date: March 10, 2022Inventors: Jong Won LEE, Je Won YOO, Chul Jong YOO, Hyun Min CHO
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Publication number: 20160372634Abstract: A light-emitting diode having outstanding light-extraction efficiency and its production method are disclosed. A method is provided wherein a nanostructure is coated uniformly over a wide surface area by means of spherical nanostructure transfer and wherein a light-emitting diode is produced in which the light-extraction efficiency is maximized by means of the coating.Type: ApplicationFiled: February 6, 2015Publication date: December 22, 2016Inventors: Chul-Jong YOO, Jong Lam LEE