Patents by Inventor Mi-Young Han
Mi-Young Han 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: 20240114778Abstract: The present disclosure relates to an organic electroluminescent compound, a plurality of host materials, and an organic electroluminescent device comprising the same. By comprising the compound according to the present disclosure or by comprising a specific combination of compounds according to the present disclosure as a plurality of host materials, it is possible to produce an organic electroluminescent device having improved driving voltage, luminous efficiency, and/or lifetime properties compared to the conventional organic electroluminescent devices.Type: ApplicationFiled: August 14, 2023Publication date: April 4, 2024Inventors: So-Young JUNG, Hyo-Nim SHIN, Seung-Hyun YOON, Hyun-Ju KANG, Ye-Jin JEON, Tae-Jun HAN, Mi-Ja LEE, Dong-Gil KIM, Sang-Hee CHO
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Publication number: 20240081146Abstract: An organic light emitting diode (OLED) includes an emissive layer with at least one emitting part includes at least one emitting material layer, a first electron transport layer and a second electron transport layer disposed sequentially between two facing electrodes, wherein the first electron transport layer includes a first electron transporting material of a benzimidazole-based compound substituted with at least one spiro-structured fluorenyl group and the second electron transport layer includes a second electron transporting material of a benzimidazole-based compound substituted with at least one anthracenyl group. The first electron transport including the first electron transport material with excellent thermal stability is disposed adjacently to the emitting material layer so that the OLED can maintain good luminescent intensity in an environment of high temperature and implement beneficial luminous properties.Type: ApplicationFiled: July 6, 2023Publication date: March 7, 2024Inventors: Yu-Jeong LEE, Jung-Keun KIM, Mi-Young HAN, Min-Hyeong HWANG
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Publication number: 20230255078Abstract: A light emitting device is capable of improving the efficiency in the visible light wavelength in a structure in which light extraction efficiency is improved through a microlens array. The light emitting display device includes a substrate having a plurality of subpixels, each comprising a light emitting region and a non-light emitting region, an over-coating layer having irregularities on a surface thereof in at least the light emitting region, and a light emitting device disposed on the surface of the over-coating layer, the light emitting device comprising an anode and a cathode facing each other, and at least two blue stacks and a phosphorescent stack between the anode and the cathode, at least one of the blue stacks is the blue light emitting layer and includes an electron transport layer including a first material, the electron transport layer being in contact with the blue light emitting layer.Type: ApplicationFiled: December 9, 2022Publication date: August 10, 2023Inventors: Wook Song, Yu Jeong Lee, Byung Gun Ahn, Mi Young Han, Chun Ki Kim, Sae Mi Park, Jung Keun Kim, Byung Soo Kim
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Patent number: 11430834Abstract: A display device, includes a substrate having at least two colored subpixels and a white subpixel separately arranged thereon; a first anode having a first thickness at each of the colored subpixels on the substrate; a second anode, having a thickness smaller than the first thickness, at the white subpixel on the substrate; an organic stack comprising a first stack having a first blue emission layer, a second stack having a second blue emission layer, and a third stack having at least one of emission layers having a longer wavelength than the blue emission layers, which are provided in sequence on the first anode in the colored subpixel and the second anode in the white subpixel; a cathode over the organic stack; and a compensation pattern between the second anode and the substrate.Type: GrantFiled: December 21, 2020Date of Patent: August 30, 2022Assignee: LG DISPLAY CO., LTD.Inventors: Mi-Young Han, Jung-Keun Kim, Tae-Shick Kim
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Publication number: 20220209158Abstract: A white light emitting device and a display device using the same which can prevent a change in luminance due to change in viewing angle, improve color deviation, and lower a driving voltage at the same time, through a change in an internal stack structure and a thickness an emission-side electrode with regard to a vertical distance from a lower surface of the first electrode to a lower surface of the second electrode.Type: ApplicationFiled: December 23, 2021Publication date: June 30, 2022Applicant: LG DISPLAY CO., LTD.Inventors: Mi Young HAN, Min Hyeong HWANG, Jung Keun KIM
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Publication number: 20210202598Abstract: A display device, includes a substrate having at least two colored subpixels and a white subpixel separately arranged thereon; a first anode having a first thickness at each of the colored subpixels on the substrate; a second anode, having a thickness smaller than the first thickness, at the white subpixel on the substrate; an organic stack comprising a first stack having a first blue emission layer, a second stack having a second blue emission layer, and a third stack having at least one of emission layers having a longer wavelength than the blue emission layers, which are provided in sequence on the first anode in the colored subpixel and the second anode in the white subpixel; a cathode over the organic stack; and a compensation pattern between the second anode and the substrate.Type: ApplicationFiled: December 21, 2020Publication date: July 1, 2021Applicant: LG Display Co., Ltd.Inventors: Mi-Young HAN, Jung-Keun KIM, Tae-Shick KIM
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Patent number: 11024821Abstract: One embodiment of the present disclosure provides an organic light-emitting element corresponding to each pixel region. The organic light-emitting element includes a hole transport layer, a first light-emitting layer, a second light-emitting layer, a third light-emitting layer, a fourth light-emitting layer, and an electron transport layer. The first light-emitting layer includes a first dopant corresponding to a first color and a first host. The second light-emitting layer includes a second dopant corresponding to a second color different from the first color and a second host different from the first host. The third light-emitting layer includes the first dopant and the second host, and the fourth light-emitting layer includes the second dopant and the second host.Type: GrantFiled: December 19, 2018Date of Patent: June 1, 2021Assignee: LG DISPLAY CO., LTD.Inventors: Seongsu Jeon, Seungryong Joung, Taewoo Jeon, Mi-Young Han
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Patent number: 10741781Abstract: An organic light emitting device can include first and second electrodes formed to face each other on a substrate; a first stack interposed between the first and second electrode and configured with a hole injection layer, a first hole transportation layer, a first light emission layer and a first electron transportation layer which are stacked on the first electrode; a second stack interposed between the first stack and the second electrode and configured with a second hole transportation layer, a second light emission layer, a third light emission layer and a second electron transportation layer which are stacked on the first stack; a third stack interposed between the second stack and the second electrode and configured with a third hole transportation layer, a fourth light emission layer, a third electron transportation layer and an electron injection layer which are stacked on the second stack; and a first charge generation layer interposed between the first and second stacks and a second charge generatiType: GrantFiled: August 7, 2019Date of Patent: August 11, 2020Assignee: LG DISPLAY CO., LTD.Inventors: Tae Sun Yoo, Hwa Kyung Kim, Hong Seok Choi, Jae Il Song, Mi Young Han, Shin Han Kim, Hye Min Oh
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Patent number: 10646066Abstract: Shown are a coffee extraction system and a coffee extraction method using the same.Type: GrantFiled: August 25, 2016Date of Patent: May 12, 2020Assignee: MAEIL DAIRIES CO., LTD.Inventors: Seon Hee Kim, Jae Hong Kang, Jin-Oh Yang, Jae Sung Lee, Mi Young Han, Soo Jin Choi, Seong Ah Cho, Heoung Sik Kong, Ho Nam Chun
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Patent number: 10516128Abstract: Disclosed is a white organic light emitting device for enhancing emission efficiency and a color viewing angle or a color reproduction rate. The white organic light emitting device includes a first emission part between a first electrode and a second electrode, the first emission part having a first emission layer, a second emission part on the first emission part, the second emission part having a second emission layer, and a third emission part on the second emission part, the third emission part having a third emission layer. At least two emission layers of the first to third emission layers emit lights having a same color to enhance emission efficiency and a color viewing angle, and the at least two emission layers are adjacent to each other.Type: GrantFiled: March 20, 2018Date of Patent: December 24, 2019Assignee: LG Display Co., Ltd.Inventors: Mi-Young Han, Chang Wook Han, Tae Il Kum, Gwi Jeong Cho, Tae Shick Kim, Se Ung Kim, Hee Dong Choi
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Publication number: 20190363274Abstract: An organic light emitting device can include first and second electrodes formed to face each other on a substrate; a first stack interposed between the first and second electrode and configured with a hole injection layer, a first hole transportation layer, a first light emission layer and a first electron transportation layer which are stacked on the first electrode; a second stack interposed between the first stack and the second electrode and configured with a second hole transportation layer, a second light emission layer, a third light emission layer and a second electron transportation layer which are stacked on the first stack; a third stack interposed between the second stack and the second electrode and configured with a third hole transportation layer, a fourth light emission layer, a third electron transportation layer and an electron injection layer which are stacked on the second stack; and a first charge generation layer interposed between the first and second stacks and a second charge generatiType: ApplicationFiled: August 7, 2019Publication date: November 28, 2019Applicant: LG DISPLAY CO., LTD.Inventors: Tae Sun YOO, Hwa Kyung KIM, Hong Seok CHOI, Jae Il SONG, Mi Young HAN, Shin Han KIM, Hye Min OH
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Patent number: 10418577Abstract: An organic light emitting device can include first and second electrodes formed to face each other on a substrate; a first stack interposed between the first and second electrode and configured with a hole injection layer, a first hole transportation layer, a first light emission layer and a first electron transportation layer which are stacked on the first electrode; a second stack interposed between the first stack and the second electrode and configured with a second hole transportation layer, a second light emission layer, a third light emission layer and a second electron transportation layer which are stacked on the first stack; a third stack interposed between the second stack and the second electrode and configured with a third hole transportation layer, a fourth light emission layer, a third electron transportation layer and an electron injection layer which are stacked on the second stack; and a first charge generation layer interposed between the first and second stacks and a second charge generatiType: GrantFiled: June 19, 2018Date of Patent: September 17, 2019Assignee: LG DISPLAY CO., LTD.Inventors: Tae Sun Yoo, Hwa Kyung Kim, Hong Seok Choi, Jae Il Song, Mi Young Han, Shin Han Kim, Hye Min Oh
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Publication number: 20190207138Abstract: One embodiment of the present disclosure provides an organic light-emitting element corresponding to each pixel region. The organic light-emitting element includes a hole transport layer, a first light-emitting layer, a second light-emitting layer, a third light-emitting layer, a fourth light-emitting layer, and an electron transport layer. The first light-emitting layer includes a first dopant corresponding to a first color and a first host. The second light-emitting layer includes a second dopant corresponding to a second color different from the first color and a second host different from the first host. The third light-emitting layer includes the first dopant and the second host, and the fourth light-emitting layer includes the second dopant and the second host.Type: ApplicationFiled: December 19, 2018Publication date: July 4, 2019Inventors: Seongsu JEON, Seungryong JOUNG, Taewoo JEON, Mi-Young HAN
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Publication number: 20180301652Abstract: An organic light emitting device can include first and second electrodes formed to face each other on a substrate; a first stack interposed between the first and second electrode and configured with a hole injection layer, a first hole transportation layer, a first light emission layer and a first electron transportation layer which are stacked on the first electrode; a second stack interposed between the first stack and the second electrode and configured with a second hole transportation layer, a second light emission layer, a third light emission layer and a second electron transportation layer which are stacked on the first stack; a third stack interposed between the second stack and the second electrode and configured with a third hole transportation layer, a fourth light emission layer, a third electron transportation layer and an electron injection layer which are stacked on the second stack; and a first charge generation layer interposed between the first and second stacks and a second charge generatiType: ApplicationFiled: June 19, 2018Publication date: October 18, 2018Applicant: LG DISPLAY CO., LTD.Inventors: Tae Sun YOO, Hwa Kyung KIM, Hong Seok CHOI, Jae Il SONG, Mi Young HAN, Shin Han KIM, Hye Min OH
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Publication number: 20180242777Abstract: Disclosed are a coffee extraction system and a coffee extraction method using the same.Type: ApplicationFiled: August 25, 2016Publication date: August 30, 2018Applicant: MAEIL DAIRIES CO., LTD.Inventors: Seon Hee KIM, Jae Hong KANG, Jin-Oh YANG, Jae Sung LEE, Mi Young HAN, Soo Jin CHOI, Seong Ah CHO, Heoung Sik KONG, Ho Nam CHUN
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Patent number: 10043856Abstract: Disclosed is an organic light emitting display device. The organic light emitting display device includes an emission part which is disposed between an anode and a cathode and includes an emission layer. The emission part includes at least two emission layers emitting lights of different colors and a recombination zone movement prevention layer. The at least two emission layers each includes at least one host and at least one dopant, and the recombination zone movement prevention layer is disposed on a specific emission layer among the at least two emission layers.Type: GrantFiled: November 9, 2017Date of Patent: August 7, 2018Assignee: LG DISPLAY CO., LTD.Inventors: Taesun Yoo, Hongseok Choi, Mi-Young Han, JungSoo Park
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Publication number: 20180212178Abstract: Disclosed is a white organic light emitting device for enhancing emission efficiency and a color viewing angle or a color reproduction rate. The white organic light emitting device includes a first emission part between a first electrode and a second electrode, the first emission part having a first emission layer, a second emission part on the first emission part, the second emission part having a second emission layer, and a third emission part on the second emission part, the third emission part having a third emission layer. At least two emission layers of the first to third emission layers emit lights having a same color to enhance emission efficiency and a color viewing angle, and the at least two emission layers are adjacent to each other.Type: ApplicationFiled: March 20, 2018Publication date: July 26, 2018Inventors: Mi-Young HAN, Chang Wook HAN, Tae Il KUM, Gwi Jeong CHO, Tae Shick KIM, Se Ung KIM, Hee Dong CHOI
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Patent number: 10026915Abstract: A white organic light emitting device can include first and second electrodes on a substrate; a first stack configured with a hole injection layer, a first hole transportation layer, a first light emission layer and a first electron transportation layer which are stacked on the first electrode; a second stack configured with a second hole transportation layer, a second light emission layer, a third light emission layer, and a second electron transportation layer which are stacked on the first stack; a third stack interposed between the second stack and the second electrode and configured with a third hole transportation layer, a fourth light emission layer, a third electron transportation layer and an electron injection layer which are stacked on the second stack; and charge generation layers interposed between the first and second stacks and between the second and third stacks and configured to adjust a charge balance between the stacks.Type: GrantFiled: November 23, 2015Date of Patent: July 17, 2018Assignee: LG DISPLAY CO., LTD.Inventors: Tae Sun Yoo, Hwa Kyung Kim, Hong Seok Choi, Jae Il Song, Mi Young Han, Shin Han Kim, Hye Min Oh
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Patent number: 10003038Abstract: Discussed herein is an organic light-emitting device capable of increasing luminous efficiency and panel efficiency while improving color gamut. The organic light-emitting device includes a red organic light emitting layer including a single host material of hole transport type and a yellow-green organic light emitting layer including a plurality of host materials in a light-emitting stack. Instead of using an additional host material for the organic light emitting layers, the material of the electron transport layer and the material of the hole transport layer is used as the host material of the yellow-green organic light emitting layer, and the material of the hole transport layer is used as the host material of the red organic light emitting layer. Accordingly, the number of materials of the organic light emitting layers is reduced, such that the fabricating process becomes simpler.Type: GrantFiled: July 26, 2016Date of Patent: June 19, 2018Assignee: LG DISPLAY CO., LTD.Inventors: Mi-Young Han, Hongseok Choi, Taesun Yoo, JungSoo Park
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Patent number: 9978970Abstract: An organic light emitting device including an organic light emitting element having a low driving voltage and a high luminous efficiency is provided. The organic light emitting device includes two or more stack emission units, and a charge generating layer including an N-type charge generating layer and a P-type charge generating layer is disposed between the stack emission units. Herein, the P-type charge generating layer is formed of a material having an LUMO energy level similar to an HOMO energy level of a hole transporting layer injected with holes from the P-type charge generating layer. Accordingly, even if the P-type charge generating layer is not additionally doped with a P-type dopant, it is possible to readily inject holes into a stack emission unit adjacent to the P-type charge generating layer.Type: GrantFiled: June 28, 2016Date of Patent: May 22, 2018Assignee: LG Display Co., Ltd.Inventors: JaeMan Lee, Taesun Yoo, Mi-Young Han, SoYeon Ahn, Heedong Choi, JungSoo Park, Yoondeok Han