Patents by Inventor Hoo Keun PARK
Hoo Keun PARK 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: 20240063250Abstract: A display device includes a substrate, a plurality of pixel electrodes on the substrate, a plurality of light emitting elements on the plurality of pixel electrodes, and each of the plurality of light emitting elements including a first semiconductor layer, an active layer, and a second semiconductor layer, and a barrier layer around the plurality of light emitting elements and partitioning the plurality of light emitting elements, wherein the barrier layer includes a semiconductor material and a dopant including iron or carbon.Type: ApplicationFiled: August 11, 2023Publication date: February 22, 2024Inventors: Sang Jo KIM, Hoo Keun PARK
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Publication number: 20240063337Abstract: A display device includes a substrate including a pixel circuit unit, a partition wall including a distributed Bragg reflector (DBR) structure partitioning a light-emitting area and a non-light-emitting area, and light-emitting elements above the substrate, corresponding to the light-emitting area, and including a first semiconductor layer, an active layer, and a porous semiconductor layer.Type: ApplicationFiled: June 29, 2023Publication date: February 22, 2024Inventors: Su Jeong KIM, Sang Jo KIM, Jin Wan KIM, Hoo Keun PARK
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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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Patent number: 11769787Abstract: A display device includes a substrate; a first electrode and a second electrode arranged to be spaced apart from each other on the substrate; a first insulating layer on the substrate; a light emitting element on the first insulating layer, located between the first electrode and the second electrode, and including a first end portion and a second end portion; a third electrode on the substrate and electrically connected to the first electrode and the first end portion; a fourth electrode on the substrate and electrically connected to the second electrode and the second end portion; a second insulating layer on the substrate and covering the light emitting element, the third electrode, and the fourth electrode; and a light diffusion layer on the second insulating layer and including a light diffusion particle.Type: GrantFiled: August 16, 2021Date of Patent: September 26, 2023Assignee: Samsung Display Co., Ltd.Inventors: Dong Gyun Kim, Moon Jung An, Dong Eon Lee, Hye Lim Kang, Hoo Keun Park, Byung Ju Lee
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Publication number: 20230268464Abstract: A method of manufacturing a light emitting element, comprises placing a plurality of mask patterns on a substrate, forming first patterns on the substrate through the plurality of mask patterns, the first patterns recessed from an upper surface of the substrate, forming an undoped semiconductor layer on the substrate on which the first patterns are formed, etching the undoped semiconductor layer, forming a first semiconductor layer on the undoped semiconductor layer, forming an active layer on the first semiconductor layer, forming a second semiconductor layer on the active layer, and forming an electrode layer on the second semiconductor layer, wherein the undoped semiconductor layer includes second patterns recessed from a lower surface of the undoped semiconductor layer.Type: ApplicationFiled: December 5, 2022Publication date: August 24, 2023Applicant: Samsung Display Co., LTD.Inventors: Byung Ju LEE, Jin Wan KIM, Hoo Keun PARK, Young Jin SONG, Seung Geun LEE
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Publication number: 20230246127Abstract: A display device includes first banks spaced apart from one another and disposed on a substrate, a first electrode and a second electrode disposed on the respective first banks to cover the respective first banks, the first electrode and the second electrode being spaced apart from each other, and a light-emitting element disposed between the first electrode and the second electrode. The light-emitting element includes an active layer, a first semiconductor layer, and a second semiconductor layer disposed between the active layer and the first electrode. The first semiconductor layer includes a main semiconductor layer and a nanoporous layer disposed in the main semiconductor layer.Type: ApplicationFiled: September 14, 2022Publication date: August 3, 2023Applicant: Samsung Display Co., LTD.Inventors: Hoo Keun PARK, Sang Jo KIM, Su Jeong KIM, Byung Ju LEE
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Publication number: 20230223422Abstract: A display device includes first banks spaced apart from one another and disposed on a substrate; a first electrode and a second electrode, each disposed on one of the first banks to cover each respective first bank and spaced apart from each other; and a light-emitting element disposed between the first electrode and the second electrode. The light-emitting element includes an active layer, the active layer is in a non-polarized state, and the active layer includes cubic gallium nitride (c-GaN).Type: ApplicationFiled: October 19, 2022Publication date: July 13, 2023Applicant: Samsung Display Co., LTD.Inventors: Sang Jo KIM, Hoo Keun PARK, Young Jin SONG
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Publication number: 20230207732Abstract: A display device includes pixel electrodes spaced apart from one another on a substrate; light-emitting elements disposed on the pixel electrodes; a common electrode layer disposed on the light-emitting elements; and an undoped semiconductor layer disposed on the common electrode layer. The display device includes nanostructures disposed in the common electrode layer and spaced apart from one another, and the common electrode layer includes a first common electrode layer disposed between the undoped semiconductor layer and the nanostructures, and a second common electrode layer disposed between adjacent nanostructures and disposed between the light-emitting elements and the nanostructures.Type: ApplicationFiled: August 11, 2022Publication date: June 29, 2023Applicant: Samsung Display Co., LTD.Inventors: Hoo Keun PARK, Jin Wan KIM, Sang Jo KIM, Su Jeong KIM
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Publication number: 20230197888Abstract: Provided herein is a light emitting element and a method of fabricating the light emitting element. The light emitting element includes a first semiconductor layer, a first insulating film disposed on the first semiconductor layer, the first insulating film including a nano-pattern, an active layer disposed in the nano-pattern of the first insulating film, and a second semiconductor layer disposed on the active layer in the nano-pattern of the first insulating film.Type: ApplicationFiled: December 15, 2022Publication date: June 22, 2023Applicant: Samsung Display Co., LTD.Inventors: Hoo Keun PARK, Jin Wan KIM, Seung Geun LEE
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Publication number: 20230178687Abstract: A display device comprises a plurality of pixel electrodes which are provided on a substrate, and a plurality of light emitting elements which are provided on the plurality of pixel electrodes, wherein each of the plurality of light emitting elements comprises a first semiconductor layer, a second semiconductor layer and an active layer provided between the first semiconductor layer and the second semiconductor layer, and one or more of the plurality of light emitting elements comprise a capping layer included in the active layer, and another one of the plurality of light emitting elements does not comprise the capping layer in the active layer, wherein the capping layer comprises AlGaN.Type: ApplicationFiled: August 4, 2022Publication date: June 8, 2023Inventors: Hoo Keun PARK, Seung Geun LEE, Jin Wan KIM, Young Jin SONG
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Publication number: 20230111615Abstract: A display device is provided. The display device comprises a plurality of pixel electrodes on a first substrate and spaced apart from each other; a plurality of light emitting elements on the plurality of pixel electrodes; and a common electrode layer on the plurality of light emitting elements, wherein the common electrode layer includes a first common electrode layer on the plurality of light emitting elements, and a second common electrode layer between the first common electrode layer and the plurality of light emitting elements, and a lattice constant of the first common electrode layer is larger than a lattice constant of the second common electrode layer.Type: ApplicationFiled: June 30, 2022Publication date: April 13, 2023Inventors: Jin Wan KIM, Sang Jo KIM, Hoo Keun PARK, Byung Ju LEE
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Publication number: 20230111380Abstract: A display device and a method for manufacturing the same are provided. The display device includes a substrate, pixel electrodes on the substrate, and light emitting elements on the pixel electrodes, each of the light emitting elements including a first stack configured to emit first light, a second stack below the first stack, and configured to emit second light, a third stack below the second stack, and configured to emit third light, and tunnel function layers respectively between the first stack and the second stack, and between the second stack and the third stack.Type: ApplicationFiled: October 11, 2022Publication date: April 13, 2023Inventors: Jin Wan Kim, Seung Geun Lee, Sang Jo KIM, Hoo Keun Park
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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: 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: 20220352238Abstract: A display device includes light-emitting elements disposed on a substrate, wherein each of the light-emitting elements includes a first semiconductor layer, an active layer disposed on the first semiconductor layer, a second semiconductor layer disposed on the active layer, and a porous layer disposed on the second semiconductor layer.Type: ApplicationFiled: December 22, 2021Publication date: November 3, 2022Applicant: Samsung Display Co., LTD.Inventors: Su Jeong KIM, Young Jin SONG, Jin Wan KIM, Dae Ho SONG, Jin Woo CHOI, Sang Jo KIM, Hoo Keun PARK, Byung Ju LEE, Seung Geun LEE
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Publication number: 20220352112Abstract: A display device including a display panel including a first panel pad, a first circuit board including a first pad spaced from the first panel pad and a coating member on the first pad, and a wire connecting the first panel pad and the first pad to each other. The coating member includes a same material as the wire and integrally connected to the wire.Type: ApplicationFiled: April 20, 2022Publication date: November 3, 2022Inventors: Hae Yun CHOI, Hoo Keun PARK, Tae Hee LEE, Joo Woan CHO
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Publication number: 20220285582Abstract: A light emitting element includes: a first semiconductor layer including a semiconductor of a first type; a second semiconductor layer including a semiconductor of a second type different from the first type; and an active layer between the first and second semiconductor layers, the active layer including a first active area including a first well layer, and a second active area including a second well layer. The first well layer has a first band gap, and the second well layer has a second band gap smaller than the first band gap. At least a portion of the first active area is between the second active area and the second semiconductor layer. A distance between the second active area and the second semiconductor layer is equal to or greater than 0.1 times of a distance between the first and second semiconductor layers.Type: ApplicationFiled: December 6, 2021Publication date: September 8, 2022Inventors: Seung A LEE, Hoo Keun PARK, Young Jin SONG
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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