Patents by Inventor Wooram YOUN
Wooram YOUN 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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Patent number: 11398619Abstract: A display device is disclosed. The display device includes a substrate provided with a plurality of subpixels including a first light emitting area and a second light emitting area, a first electrode in the first light emitting area of each of the plurality of subpixels on the substrate, a first light emitting layer provided on the first electrode, a second electrode provided on the first light emitting layer, a second light emitting layer provided on the second electrode, a third electrode provided on the second light emitting layer, and a light guide structure provided between the substrate and the first electrode, guiding light emitted from the first light emitting layer to be emitted to the second light emitting area.Type: GrantFiled: December 20, 2019Date of Patent: July 26, 2022Assignee: LG Display Co., Ltd.Inventors: Wooram Youn, Jang Jo
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Patent number: 11367850Abstract: An electroluminescent display device includes a substrate including a first sub pixel, a second sub pixel, and a third sub pixel, a first electrode in each of the first to third sub pixels on the substrate, an emission layer on the first electrode, and a second electrode on the emission layer, wherein the first sub pixel is provided with a first emission area including a first sub emission area and a second sub emission area, and the first sub emission area is configured to emit mixed light of first colored light and second colored light, wherein the second colored light is different from the first colored light, and the second sub emission area is configured to emit the second colored light.Type: GrantFiled: December 5, 2019Date of Patent: June 21, 2022Assignee: LG Display Co., Ltd.Inventors: Pureum Kim, Wooram Youn, YoungMi Kim
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Patent number: 11227905Abstract: A display device is disclosed, which is capable of preventing a leakage current between neighboring pixels. The display device includes a substrate including a first sub pixel and a second sub pixel, first electrodes patterned in the respective first and second sub pixel on the substrate, a bankwall provided between the first electrodes, a bank provided to cover an end of the first electrode and configured to expose some portions of the first electrode, an emission layer provided on the bankwall and the bank, and configured to include a first stack, a second stack, and a charge generation layer disposed between the first stack and the second stack, and a second electrode provided on the emission layer, wherein the emission layer includes a disconnected area in which the charge generation layer is disconnectedly provided by the bankwall.Type: GrantFiled: December 2, 2019Date of Patent: January 18, 2022Assignee: LG Display Co., Ltd.Inventors: YoungMi Kim, Wooram Youn
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Patent number: 11211588Abstract: An electroluminescent display device includes: a substrate, a first subpixel on the substrate, a second subpixel on the substrate, a third subpixel on the substrate, a respective first electrode in each of the first to third subpixels, an emission layer on the first electrodes, a common second electrode on the emission layer, an encapsulation layer including: a first encapsulation layer on the second electrode, and a second encapsulation layer on the first encapsulation layer, and a first semi-transmissive layer between the first encapsulation layer and the second encapsulation layer, the first semi-transmissive layer overlapping the first electrode of the first subpixel.Type: GrantFiled: November 20, 2019Date of Patent: December 28, 2021Assignee: LG Display Co., Ltd.Inventors: Hyeongjun Lim, Wooram Youn, Minki Kim
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Patent number: 10991915Abstract: Embodiments described herein generally relate to organic light-emitting diodes (OLEDs) comprising a substrate, a light extraction layer, a first electrode, one or more organic layers, and a second electrode. In some embodiments, the light extraction layer is positioned between the substrate and the first electrode. According to some embodiments, an interface between the light extraction layer and the first electrode comprises a grating structure. The grating structure may, in certain cases, promote outcoupling of light generated within the OLED (e.g., through diffraction).Type: GrantFiled: January 27, 2017Date of Patent: April 27, 2021Assignee: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INCORPORATEDInventors: Franky Fat Kei So, Kirk S. Schanze, Xiangyu Fu, Wooram Youn
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Patent number: 10840316Abstract: An electroluminescent display apparatus includes: a substrate including a first subpixel and a second subpixel; a first electrode in each of the first subpixel and the second subpixel; a partition wall between the first electrode of the first subpixel and the first electrode of the second subpixel; a light emitting layer on the first electrode and the partition wall; a second electrode on the light emitting layer; a first trench between the first electrode of the first subpixel and the partition wall; and a second trench between the first electrode of the second subpixel and the partition wall.Type: GrantFiled: August 19, 2019Date of Patent: November 17, 2020Assignee: LG Display Co., Ltd.Inventors: YoungMi Kim, Wooram Youn
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Patent number: 10748975Abstract: A display device includes a substrate with a first subpixel area and a second subpixel area adjacent to one side of the first subpixel area; an insulating layer on the substrate having a first recessed portion on the first subpixel area, a second recessed portion on the second subpixel area and a convex portion between the first recessed portion and the second recessed portion; a reflective electrode on the insulating layer including first and second reflective electrodes on the first and second recessed portions, respectively; a first electrode including a first sub electrode on the first reflective electrode and a second sub electrode on the second reflective electrode; an organic light emitting layer on the first electrode; a bank provided between the first subpixel area and the second subpixel area while covering an end of the first electrode; a second electrode on the organic light emitting layer; and a light path change structure on the second electrode while being overlapping the bank.Type: GrantFiled: July 25, 2019Date of Patent: August 18, 2020Assignee: LG Display Co., Ltd.Inventors: Wooram Youn, Jaehyung Yu
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Publication number: 20200203667Abstract: A display device is disclosed. The display device includes a substrate provided with a plurality of subpixels including a first light emitting area and a second light emitting area, a first electrode in the first light emitting area of each of the plurality of subpixels on the substrate, a first light emitting layer provided on the first electrode, a second electrode provided on the first light emitting layer, a second light emitting layer provided on the second electrode, a third electrode provided on the second light emitting layer, and a light guide structure provided between the substrate and the first electrode, guiding light emitted from the first light emitting layer to be emitted to the second light emitting area.Type: ApplicationFiled: December 20, 2019Publication date: June 25, 2020Applicant: LG Display Co., Ltd.Inventors: Wooram YOUN, Jang JO
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Publication number: 20200194705Abstract: An electroluminescent display device includes a substrate including a first sub pixel, a second sub pixel, and a third sub pixel, a first electrode in each of the first to third sub pixels on the substrate, an emission layer on the first electrode, and a second electrode on the emission layer, wherein the first sub pixel is provided with a first emission area including a first sub emission area and a second sub emission area, and the first sub emission area is configured to emit mixed light of first colored light and second colored light, wherein the second colored light is different from the first colored light, and the second sub emission area is configured to emit the second colored light.Type: ApplicationFiled: December 5, 2019Publication date: June 18, 2020Applicant: LG Display Co., Ltd.Inventors: Pureum KIM, Wooram YOUN, YoungMi KIM
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Publication number: 20200185650Abstract: An electroluminescent display device includes: a substrate, a first subpixel on the substrate, a second subpixel on the substrate, a third subpixel on the substrate, a respective first electrode in each of the first to third subpixels, an emission layer on the first electrodes, a common second electrode on the emission layer, an encapsulation layer including: a first encapsulation layer on the second electrode, and a second encapsulation layer on the first encapsulation layer, and a first semi-transmissive layer between the first encapsulation layer and the second encapsulation layer, the first semi-transmissive layer overlapping the first electrode of the first subpixel.Type: ApplicationFiled: November 20, 2019Publication date: June 11, 2020Applicant: LG Display Co., Ltd.Inventors: Hyeongjun Lim, Wooram Youn, Minki Kim
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Publication number: 20200185469Abstract: A display device is disclosed, which is capable of preventing a leakage current between neighboring pixels. The display device includes a substrate including a first sub pixel and a second sub pixel, first electrodes patterned in the respective first and second sub pixel on the substrate, a bankwall provided between the first electrodes, a bank provided to cover an end of the first electrode and configured to expose some portions of the first electrode, an emission layer provided on the bankwall and the bank, and configured to include a first stack, a second stack, and a charge generation layer disposed between the first stack and the second stack, and a second electrode provided on the emission layer, wherein the emission layer includes a disconnected area in which the charge generation layer is disconnectedly provided by the bankwall.Type: ApplicationFiled: December 2, 2019Publication date: June 11, 2020Applicant: LG Display Co., Ltd.Inventors: YoungMi KIM, Wooram YOUN
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Publication number: 20200135818Abstract: An electroluminescent display apparatus includes: a substrate including a first subpixel and a second subpixel; a first electrode in each of the first subpixel and the second subpixel; a partition wall between the first electrode of the first subpixel and the first electrode of the second subpixel; a light emitting layer on the first electrode and the partition wall; a second electrode on the light emitting layer; a first trench between the first electrode of the first subpixel and the partition wall; and a second trench between the first electrode of the second subpixel and the partition wall.Type: ApplicationFiled: August 19, 2019Publication date: April 30, 2020Applicant: LG Display Co., Ltd.Inventors: YoungMi KIM, Wooram YOUN
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Publication number: 20200035769Abstract: A display device includes a substrate with a first subpixel area and a second subpixel area adjacent to one side of the first subpixel area; an insulating layer on the substrate having a first recessed portion on the first subpixel area, a second recessed portion on the second subpixel area and a convex portion between the first recessed portion and the second recessed portion; a reflective electrode on the insulating layer including first and second reflective electrodes on the first and second recessed portions, respecyively; a first electrode including a first sub electrode on the first reflective electrode and a second sub electrode on the second reflective electrode; an organic light emitting layer on the first electrode; a bank provided between the first subpixel area and the second subpixel area while covering an end of the first electrode; a second electrode on the organic light emitting layer; and a light path change structure on the second electrode while being overlapping the bank.Type: ApplicationFiled: July 25, 2019Publication date: January 30, 2020Applicant: LG Display Co., Ltd.Inventors: Wooram YOUN, Jaehyung YU
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Patent number: 10396129Abstract: An organic light-emitting display device. A substrate is divided into a plurality of subpixels generating different colors of light. A light leakage prevention layer is disposed on a portion of the substrate corresponding to a light-emitting area of at least one subpixel of the plurality of subpixels. An overcoat layer is disposed on a portion of the substrate corresponding to at least one subpixel of the plurality of subpixels, and includes microlenses having a plurality of concave portions or a plurality of convex portions. An organic electroluminescent device is disposed on the overcoat layer.Type: GrantFiled: April 27, 2018Date of Patent: August 27, 2019Assignee: LG Display Co., Ltd.Inventors: Jihyang Jang, KangJu Lee, SeungRyong Joung, Hansun Park, Sookang Kim, Soyoung Jo, Seongsu Jeon, Wonhoe Koo, Hyunsoo Lim, JeaHo Park, Mingeun Choi, Hyunjoo Kim, Wooram Youn
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Publication number: 20190013497Abstract: Embodiments described herein generally relate to organic light-emitting diodes (OLEDs) comprising a substrate, a light extraction layer, a first electrode, one or more organic layers, and a second electrode. In some embodiments, the light extraction layer is positioned between the substrate and the first electrode. According to some embodiments, an interface between the light extraction layer and the first electrode comprises a grating structure. The grating structure may, in certain cases, promote outcoupling of light generated within the OLED (e.g., through diffraction).Type: ApplicationFiled: January 27, 2017Publication date: January 10, 2019Inventors: Franky Fat Kei So, Kirk S. Schanze, Xiangyu Fu, Wooram Youn
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Publication number: 20180247983Abstract: An organic light-emitting display device. A substrate is divided into a plurality of subpixels generating different colors of light. A light leakage prevention layer is disposed on a portion of the substrate corresponding to a light-emitting area of at least one subpixel of the plurality of subpixels. An overcoat layer is disposed on a portion of the substrate corresponding to at least one subpixel of the plurality of subpixels, and includes microlenses having a plurality of concave portions or a plurality of convex portions. An organic electroluminescent device is disposed on the overcoat layer.Type: ApplicationFiled: April 27, 2018Publication date: August 30, 2018Inventors: Jihyang JANG, KangJu LEE, SeungRyong JOUNG, Hansun PARK, Sookang KIM, Soyoung JO, Seongsu JEON, Wonhoe KOO, Hyunsoo LIM, JeaHo PARK, Mingeun CHOI, Hyunjoo KIM, Wooram YOUN
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Patent number: 9978814Abstract: An organic light-emitting display device. A substrate is divided into a plurality of subpixels generating different colors of light. A light leakage prevention layer is disposed on a portion of the substrate corresponding to a light-emitting area of at least one subpixel of the plurality of subpixels. An overcoat layer is disposed on a portion of the substrate corresponding to at least one subpixel of the plurality of subpixels, and includes microlenses having a plurality of concave portions or a plurality of convex portions. An organic electroluminescent device is disposed on the overcoat layer.Type: GrantFiled: October 18, 2016Date of Patent: May 22, 2018Assignee: LG DISPLAY CO., LTD.Inventors: Jihyang Jang, KangJu Lee, SeungRyong Joung, Hansun Park, Sookang Kim, Soyoung Jo, Seongsu Jeon, Wonhoe Koo, Hyunsoo Lim, JeaHo Park, Mingeun Choi, Hyunjoo Kim, Wooram Youn
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Publication number: 20170125489Abstract: An organic light-emitting display device. A substrate is divided into a plurality of subpixels generating different colors of light. A light leakage prevention layer is disposed on a portion of the substrate corresponding to a light-emitting area of at least one subpixel of the plurality of subpixels. An overcoat layer is disposed on a portion of the substrate corresponding to at least one subpixel of the plurality of subpixels, and includes microlenses having a plurality of concave portions or a plurality of convex portions. An organic electroluminescent device is disposed on the overcoat layer.Type: ApplicationFiled: October 18, 2016Publication date: May 4, 2017Inventors: Jihyang JANG, KangJu LEE, SeungRyong JOUNG, Hansun PARK, Sookang KIM, Soyoung JO, Seongsu JEON, Wonhoe KOO, Hyunsoo LIM, JeaHo PARK, Mingeun CHOI, Hyunjoo KIM, Wooram YOUN