Patents by Inventor Seung-Ryong Joung
Seung-Ryong Joung 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: 11956980Abstract: Discussed is an organic light emitting device in which a light emitting layer includes a host and different kinds of dopants, the fluorescent dopant is formed of a material having energy level properties facilitating thermally activated delayed fluorescence (TADF), and thus energy is concentratedly transferred to the fluorescent dopant so as to increase luminous efficacy of a single color.Type: GrantFiled: December 24, 2020Date of Patent: April 9, 2024Assignee: LG DISPLAY CO., LTD.Inventors: Gyeong-Woo Kim, Hong-Seok Choi, Seung-Ryong Joung, Jun-Ho Lee, Yoon-Deok Han, Hee-Su Byeon
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Patent number: 11828943Abstract: Disclosed are a display panel which changes the inner structure of an organic light emitting stack and a color transmission structure so as to improve luminance, and a head mounted display device using the same.Type: GrantFiled: December 18, 2020Date of Patent: November 28, 2023Assignee: LG DISPLAY CO., LTD.Inventors: Seung-Ryong Joung, Sang-Hun Han, Ahn-Ki Kim, Hong-Seok Choi, Yoon-Deok Han, Gyeong-Woo Kim, Jun-Ho Lee, Hee-Su Byeon
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Publication number: 20230345748Abstract: Disclosed are an organic light emitting device and a display device using the same in which a light emitting layer includes a host and a plurality of dopants. In the light emitting layer, energy is transferred from a host and other dopants to one dopant by energy transfer system, thus it is possible to increase luminous efficacy of a single color and to increase lifetime of emission.Type: ApplicationFiled: June 27, 2023Publication date: October 26, 2023Inventors: Gyeong-Woo KIM, Hong-Seok CHOI, Seung-Ryong JOUNG, Yoon-Deok HAN, Jun-Ho LEE, Ji-Seon JANG
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Patent number: 11730006Abstract: Disclosed are an organic light emitting device and a display device using the same in which a light emitting layer includes a host and a plurality of dopants. In the light emitting layer, energy is transferred from a host and other dopants to one dopant by energy transfer system, thus it is possible to increase luminous efficacy of a single color and to increase lifetime of emission.Type: GrantFiled: November 12, 2020Date of Patent: August 15, 2023Assignee: LG Display Co., Ltd.Inventors: Gyeong-Woo Kim, Hong-Seok Choi, Seung-Ryong Joung, Yoon-Deok Han, Jun-Ho Lee, Ji-Seon Jang
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Patent number: 11730013Abstract: Disclosed is a display panel configured such that, in a structure in which the distance between a display surface and a viewer is short, the structure between a reflective plate and a first electrode (an anode) is changed such that light having three or more color peak properties for all subpixels is transmitted through a second electrode (a cathode), whereby white expression as well as color expression is possible, and a head mounted display device including the same.Type: GrantFiled: August 21, 2020Date of Patent: August 15, 2023Assignee: LG Display Co., Ltd.Inventors: Seung-Ryong Joung, Hong-Seok Choi, Yoon-Deok Han, Gyeong-Woo Kim, Jun-Ho Lee, Ji-Seon Jang
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Publication number: 20230217671Abstract: A white light emitting device, or more particularly an inverted white light emitting device, includes a plurality of stacks configured to emit white light, and an optical compensation layer provided at an outer surface of an electrode through which light is emitted to the outside. The configuration reduces the thickness of an electron transport layer adjacent to a cathode in the stack and therefore reduces the driving voltage and improves the viewing angle characteristics and as well as the efficiency.Type: ApplicationFiled: December 28, 2022Publication date: July 6, 2023Applicant: LG Display Co., Ltd.Inventors: Hee Young CHAE, Seung Ryong JOUNG, Jeong Eun WON, Yoon Deok HAN, Hee Su BYEON
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Patent number: 11257871Abstract: An organic light emitting diode display device includes an overcoating layer on a substrate having an emitting area and a non-emitting area and including a plurality of convex portions and a plurality of concave portions; a first electrode on the overcoating layer; a light emitting layer on the first electrode; and a second electrode on the light emitting layer, wherein the light emitting layer includes first, second and third emitting material layers sequentially under the second electrode, and wherein the first emitting material layer emits a first light of a first wavelength, the second emitting material layer emits the first light of the first wavelength, and the third emitting material layer emits a second light of a second wavelength different from the first wavelength.Type: GrantFiled: September 18, 2020Date of Patent: February 22, 2022Assignee: LG DISPLAY CO., LTD.Inventors: Kang-Ju Lee, Seung-Ryong Joung, Seong-Su Jeon, Tae-Shick Kim
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Patent number: 11114643Abstract: An organic light emitting display device and a method for manufacturing the same are disclosed. The organic light emitting display device includes a substrate divided into an emission area and a non-emission area, an overcoat layer disposed on the substrate and including a plurality of micro lenses in the emission area, a first electrode disposed on the overcoat layer and disposed in the emission area, an organic emission layer disposed on the substrate and having at least one layer which is flatly formed in the emission area, and a second electrode disposed on the organic emission layer.Type: GrantFiled: May 29, 2019Date of Patent: September 7, 2021Assignee: LG DISPLAY CO., LTD.Inventors: Seung Ryong Joung, Kang Ju Lee, Hansun Park, Seongsu Jeon, Wonhoe Koo
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Publication number: 20210199972Abstract: Disclosed are a display panel which changes the inner structure of an organic light emitting stack and a color transmission structure so as to improve luminance, and a head mounted display device using the same.Type: ApplicationFiled: December 18, 2020Publication date: July 1, 2021Applicant: LG Display Co., Ltd.Inventors: Seung-Ryong JOUNG, Sang-Hun HAN, Ahn-Ki KIM, Hong-Seok CHOI, Yoon-Deok HAN, Gyeong-Woo KIM, Jun-Ho LEE, Hee-Su BYEON
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Publication number: 20210202876Abstract: Discussed is an organic light emitting device in which a light emitting layer includes a host and different kinds of dopants, the fluorescent dopant is formed of a material having energy level properties facilitating thermally activated delayed fluorescence (TADF), and thus energy is concentratedly transferred to the fluorescent dopant so as to increase luminous efficacy of a single color.Type: ApplicationFiled: December 24, 2020Publication date: July 1, 2021Applicant: LG Display Co., Ltd.Inventors: Gyeong-Woo KIM, Hong-Seok CHOI, Seung-Ryong JOUNG, Jun-Ho LEE, Yoon-Deok HAN, Hee-Su BYEON
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Publication number: 20210151703Abstract: Disclosed are an organic light emitting device and a display device using the same in which a light emitting layer includes a host and a plurality of dopants. In the light emitting layer, energy is transferred from a host and other dopants to one dopant by energy transfer system, thus it is possible to increase luminous efficacy of a single color and to increase lifetime of emission.Type: ApplicationFiled: November 12, 2020Publication date: May 20, 2021Inventors: Gyeong-Woo KIM, Hong-Seok CHOI, Seung-Ryong JOUNG, Yoon-Deok HAN, Jun-Ho LEE, Ji-Seon JANG
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Publication number: 20210066663Abstract: Disclosed is a display panel configured such that, in a structure in which the distance between a display surface and a viewer is short, the structure between a reflective plate and a first electrode (an anode) is changed such that light having three or more color peak properties for all subpixels is transmitted through a second electrode (a cathode), whereby white expression as well as color expression is possible, and a head mounted display device including the same.Type: ApplicationFiled: August 21, 2020Publication date: March 4, 2021Inventors: Seung-Ryong JOUNG, Hong-Seok CHOI, Yoon-Deok HAN, Gyeong-Woo KIM, Jun-Ho LEE, Ji-Seon JANG
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Publication number: 20210013266Abstract: An organic light emitting diode display device includes an overcoating layer on a substrate having an emitting area and a non-emitting area and including a plurality of convex portions and a plurality of concave portions; a first electrode on the overcoating layer; a light emitting layer on the first electrode; and a second electrode on the light emitting layer, wherein the light emitting layer includes first, second and third emitting material layers sequentially under the second electrode, and wherein the first emitting material layer emits a first light of a first wavelength, the second emitting material layer emits the first light of the first wavelength, and the third emitting material layer emits a second light of a second wavelength different from the first wavelength.Type: ApplicationFiled: September 18, 2020Publication date: January 14, 2021Applicant: LG Display Co., LtdInventors: Kang-Ju LEE, Seung-Ryong JOUNG, Seong-Su JEON, Tae-Shick KIM
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Patent number: 10811469Abstract: An organic light emitting diode display device includes: an overcoating layer on a substrate having an emitting area and a non-emitting area and including a plurality of convex portions and a plurality of concave portions; a first electrode on the overcoating layer; a light emitting layer on the first electrode and including a first emitting material layer; and a second electrode on the light emitting layer, wherein the light emitting layer includes first, second and third emitting material layers sequentially under the second electrode, and wherein the first emitting material layer emits a first light of a first wavelength, the second emitting material layer emits the first light of the first wavelength, and the third emitting material layer emits a second light of a second wavelength different from the first wavelength.Type: GrantFiled: August 13, 2019Date of Patent: October 20, 2020Assignee: LG DISPLAY CO., LTD.Inventors: Kang-Ju Lee, Seung-Ryong Joung, Seong-Su Jeon, Tae-Shick Kim
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Publication number: 20200058709Abstract: An organic light emitting diode display device includes: an overcoating layer on a substrate having an emitting area and a non-emitting area and including a plurality of convex portions and a plurality of concave portions; a first electrode on the overcoating layer; a light emitting layer on the first electrode and including a first emitting material layer; and a second electrode on the light emitting layer, wherein the light emitting layer includes first, second and third emitting material layers sequentially under the second electrode, and wherein the first emitting material layer emits a first light of a first wavelength, the second emitting material layer emits the first light of the first wavelength, and the third emitting material layer emits a second light of a second wavelength different from the first wavelength.Type: ApplicationFiled: August 13, 2019Publication date: February 20, 2020Applicant: LG Display Co., LtdInventors: Kang-Ju LEE, Seung-Ryong JOUNG, Seong-Su JEON, Tae-Shick KIM
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Patent number: 10431776Abstract: A white organic light emitting diode (OLED) includes a first electrode and a second electrode facing each other; a first charge generation layer and a second charge generation layer between the first and second electrodes; a first light emitting unit including a first emitting material layer emitting a first color, wherein the first light emitting unit is located between the first electrode and the first charge generation layer; a second light emitting unit including a second emitting material layer emitting a second color, wherein the second light emitting unit is located between the first charge generation layer and the second charge generation layer; and a third light emitting unit including a third emitting material layer emitting the second color, wherein the third light emitting unit is located between the second charge generation layer and the second electrode.Type: GrantFiled: August 29, 2014Date of Patent: October 1, 2019Assignee: LG DISPLAY CO., LTD.Inventors: Ki-Woog Song, Sung-Hoon Pieh, Seung-Ryong Joung, Tae-Il Kum, So-Yeon Ahn, Tae-Shick Kim
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Patent number: 10038157Abstract: Disclosed is a white organic light emitting device. The white organic light emitting device includes a first emission part between a first electrode and a second electrode, a second emission part on the first emission part, and a third emission part on the second emission part. At least one of the first to third emission parts includes at least two emission layers including a red emission layer, and a position of the red emission layer is set to enhance a color reproduction rate and at least one of red efficiency, green efficiency, and blue efficiency.Type: GrantFiled: January 26, 2017Date of Patent: July 31, 2018Assignee: LG Display Co., Ltd.Inventors: So Yeon Ahn, Chang Wook Han, Hong Seok Choi, Seung Ryong Joung, Jung Soo Park, Min Gyu Lee
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Patent number: 9786862Abstract: An organic light emitting device including a first electrode connected to a thin film transistor formed on a substrate, a second electrode opposite to the first electrode, and an organic laminate formed between the first electrode and the second electrode and including a hole transport layer, a multilayer-light emitting structure, and an electron transport layer. The multilayer-light emitting structure includes at least two light emitting layers emitting light of different colors through recombination of electrons and holes injected through the first and second electrodes, and a charge transport control layer formed of a bipolar material transporting both electrons and holes at boundaries between the at least two light emitting layers and controlling the amount of charges transported between the at least two light emitting layers.Type: GrantFiled: August 22, 2014Date of Patent: October 10, 2017Assignee: LG DISPLAY., LTD.Inventors: Jae-Il Song, Seung-Ryong Joung, So-Yeon Ahn
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Patent number: 9705102Abstract: Disclosed is a white organic light emitting device. The white organic light emitting device includes a first emission part between a first electrode and a second electrode, a second emission part on the first emission part, and a third emission part on the second emission part. At least one of the first to third emission parts includes at least two emission layers including a red emission layer, and a position of the red emission layer is set to enhance a color reproduction rate and at least one of red efficiency, green efficiency, and blue efficiency.Type: GrantFiled: May 22, 2015Date of Patent: July 11, 2017Assignee: LG Display Co., Ltd.Inventors: So Yeon Ahn, Chang Wook Han, Hong Seok Choi, Seung Ryong Joung, Jung Soo Park, Min Gyu Lee
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Patent number: 9680119Abstract: Disclosed is a white organic light emitting display device comprising first and second electrodes, and a first emitting part between the first and second electrodes, the first emitting part including a red emitting layer and a blue emitting layer adjacent to the red emitting layer, wherein the red emitting layer includes a first host material which does not absorb a blue light emitted from the blue emitting layer, and an organic light emitting display apparatus using the same.Type: GrantFiled: September 8, 2015Date of Patent: June 13, 2017Assignee: LG Display Co., Ltd.Inventors: Jung Soo Park, Hong Seok Choi, Seung Ryong Joung, SoYeon Ahn, Min Gyu Lee