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1 | EP3490020B1 |
QUANTUM DOT DEVICE AND ELECTRONIC DEVICE
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Publication/Patent Number: EP3490020B1 | Publication Date: 2021-01-13 | Application Number: 18195136.9 | Filing Date: 2018-09-18 | Inventor： Seo, Hongku Jang, Eun Joo Chung, Dae Young Kim, Tae Ho Lee, Sang Jin | Assignee: Samsung Electronics Co., Ltd. | IPC: H01L51/50 | ||||
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2 | US2021040388A1 |
ELECTRONIC DEVICE INCLUDING QUANTUM DOTS
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Publication/Patent Number: US2021040388A1 | Publication Date: 2021-02-11 | Application Number: 17/083,470 | Filing Date: 2020-10-29 | Inventor： Won, Yuho Kwon, Ha Il Jang, Eun Joo Chang, Jaejun Chung, Dae Young | Assignee: SAMSUNG ELECTRONICS CO., LTD. | IPC: C09K11/88 | Abstract: An electroluminescent device includes a first electrode and a second electrode facing each other, and an emissive layer disposed between the first electrode and the second electrode and including the quantum dots. The quantum dots include a semiconductor nanocrystal core including indium (In) and phosphorous (P), a first semiconductor nanocrystal shell disposed on the semiconductor nanocrystal core, the first semiconductor nanocrystal shell including zinc and selenium, and a second semiconductor nanocrystal shell disposed on the first semiconductor nanocrystal shell, the second semiconductor nanocrystal shell including zinc and sulfur, wherein the quantum dots do not include cadmium. The electroluminescent device has an external quantum efficiency of greater than or equal to about 9% and a maximum brightness of greater than or equal to about 10,000 candelas per square meter (cd/m2). | |||
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3 | US2021005834A1 |
LIGHT EMITTING DEVICE AND DISPLAY DEVICE INCLUDING THE SAME
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Publication/Patent Number: US2021005834A1 | Publication Date: 2021-01-07 | Application Number: 16/921,188 | Filing Date: 2020-07-06 | Inventor： Lee, Heejae Kim, Sung Woo Jang, Eun Joo Chung, Dae Young Han, Moon Gyu | Assignee: SAMSUNG ELECTRONICS CO., LTD. | IPC: H01L51/50 | Abstract: A light emitting device includes: a first electrode and a second electrode with a surface facing the first electrode; an emission layer disposed between the first electrode and the second electrode and including a quantum dot (e.g., a plurality of quantum dots); and an electron auxiliary layer disposed between the emission layer and the second electrode. The electron auxiliary layer includes a first layer including a first metal oxide, and a second layer disposed on the first layer and including a second metal oxide. A roughness of an interface between the second layer and the second electrode is less than about 10 nm as determined by an electron microscopy analysis. An absolute value of a difference between a conduction band edge energy level of the second layer and a work function of the second electrode may be less than or equal to about 0.5 eV, and a conduction band edge energy level of the first layer may be less than the conduction band edge energy level of the second layer. | |||
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4 | US2020111933A1 |
LIGHT EMITTING DEVICE AND DISPLAY DEVICE INCLUDING THE SAME
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Publication/Patent Number: US2020111933A1 | Publication Date: 2020-04-09 | Application Number: 16/593,124 | Filing Date: 2019-10-04 | Inventor： Chung, Dae Young Jang, Eun Joo | Assignee: SAMSUNG ELECTRONICS CO., LTD. | IPC: H01L33/14 | Abstract: An electroluminescent device including an anode and a cathode facing each other, an emission layer disposed between the anode and the cathode, the emission layer including quantum dots, a hole auxiliary layer disposed between the emission layer and the anode and an electron auxiliary layer disposed between the emission layer and the cathode, wherein the electroluminescent device is configured such that electrons are dominant in the emission layer and a logarithmic value (log (HT/ET)) of a hole transport capability (HT) relative to an electron transport capability (ET) is less than or equal to about −1, or the electroluminescent device is configured such that holes are dominant in the emission layer and the logarithmic log value (log (HT/ET)) of the hole transport capability (HT) relative to the electron transport capability (ET) is greater than or equal to about 0.5. | |||
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5 | US10547018B2 |
Electroluminescent device, and display device comprising the same
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Publication/Patent Number: US10547018B2 | Publication Date: 2020-01-28 | Application Number: 15/970,296 | Filing Date: 2018-05-03 | Inventor： Chung, Dae Young Kang, Hyun A Jang, Eun Joo Cho, Oul | Assignee: SAMSUNG ELECTRONICS CO., LTD. | IPC: H01L33/00 | Abstract: An electroluminescent device and a display device including the same are provided. The electroluminescent device includes a first electrode and a second electrode facing each other; an emission layer disposed between the first electrode and the second electrode and including at least two light emitting particles; a hole transport layer disposed between the first electrode and the emission layer; and an electron transport layer disposed between the emission layer and the second electrode and including at least two different organic semiconductor compounds, wherein a first root-mean surface roughness of a surface of the electron transport layer obtained using a laser interferometer is in a range from about 0.5 nanometers to about 3 nanometers. | |||
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6 | US2020328368A1 |
ELECTRIC DEVICE AND DISPLAY DEVICE COMPRISING THE SAME
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Publication/Patent Number: US2020328368A1 | Publication Date: 2020-10-15 | Application Number: 16/913,575 | Filing Date: 2020-06-26 | Inventor： Chung, Dae Young Seo, Hongkyu Lee, Yeonkyung Jang, Eun Joo | Assignee: SAMSUNG ELECTRONICS CO., LTD. | IPC: H01L51/50 | Abstract: An electronic device includes a first electrode and a second electrode facing each other, an emission layer comprising a plurality of quantum dots, wherein the emission layer is disposed between the first electrode and the second electrode; a first charge auxiliary layer disposed between the first electrode and the emission layer; and an optical functional layer disposed on the second electrode on a side opposite the emission layer, wherein the first electrode includes a reflecting electrode, wherein the second electrode is a light-transmitting electrode, wherein a region between the optical functional layer and the first electrode comprises a microcavity structure, and a refractive index of the optical functional layer is greater than or equal to a refractive index of the second electrode. | |||
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7 | EP3617292A1 |
ELECTRONIC DEVICE INCLUDING QUANTUM DOTS
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Publication/Patent Number: EP3617292A1 | Publication Date: 2020-03-04 | Application Number: 19194390.1 | Filing Date: 2019-08-29 | Inventor： Won, Yuho Kwon, Ha Il Jang, Eun Joo Chang, Jaejun Chung, Dae Young | Assignee: Samsung Electronics Co., Ltd. | IPC: C09K11/88 | Abstract: An electroluminescent device includes a first electrode and a second electrode facing each other, and an emissive layer disposed between the first electrode and the second electrode and including the quantum dots. The quantum dots include a semiconductor nanocrystal core including indium (In) and phosphorous (P), a first semiconductor nanocrystal shell disposed on the semiconductor nanocrystal core, the first semiconductor nanocrystal shell including zinc and selenium, and a second semiconductor nanocrystal shell disposed on the first semiconductor nanocrystal shell, the second semiconductor nanocrystal shell including zinc and sulfur, wherein the quantum dots do not include cadmium. The electroluminescent device has an external quantum efficiency of greater than or equal to about 9% and a maximum brightness of greater than or equal to about 10,000 candelas per square meter (cd/m2). | |||
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8 | US2020343487A1 |
LIGHT EMITTING DEVICE AND DISPLAY DEVICE INCLUDING THE SAME
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Publication/Patent Number: US2020343487A1 | Publication Date: 2020-10-29 | Application Number: 16/857,727 | Filing Date: 2020-04-24 | Inventor： Han, Moon Gyu Kim, Kwanghee Lee, Heejae Jang, Eun Joo Chung, Dae Young | Assignee: SAMSUNG ELECTRONICS CO., LTD. | IPC: H01L51/52 | Abstract: Provided are a light emitting device includes a first electrode and a second electrode facing each other; an emissive layer disposed between the first electrode and the second electrode and a display device including the same. The emissive layer comprises: a first emission layer disposed on the first electrode and having a hole transporting property; a second emission layer and a third emission layer disposed on the first emission layer; wherein the second emission layer comprises an organic compound having a bipolar transport property and the third emission layer has a composition different from the first emission layer and the second emission layer; wherein the first emission layer, the second emission layer, and the third emission layer comprises a plurality of quantum dots, and wherein the first emission layer, the second emission layer, and the third emission layer are configured to emit light of a same color. | |||
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9 | US2020071612A1 |
ELECTRONIC DEVICE INCLUDING QUANTUM DOTS
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Publication/Patent Number: US2020071612A1 | Publication Date: 2020-03-05 | Application Number: 16/554,839 | Filing Date: 2019-08-29 | Inventor： Won, Yuho Kwon, Ha Il Jang, Eun Joo Chang, Jaejun Chung, Dae Young | Assignee: SAMSUNG ELECTRONICS CO., LTD. | IPC: C09K11/88 | Abstract: An electroluminescent device includes a first electrode and a second electrode facing each other, and an emissive layer disposed between the first electrode and the second electrode and including the quantum dots. The quantum dots include a semiconductor nanocrystal core including indium (In) and phosphorous (P), a first semiconductor nanocrystal shell disposed on the semiconductor nanocrystal core, the first semiconductor nanocrystal shell including zinc and selenium, and a second semiconductor nanocrystal shell disposed on the first semiconductor nanocrystal shell, the second semiconductor nanocrystal shell including zinc and sulfur, wherein the quantum dots do not include cadmium. The electroluminescent device has an external quantum efficiency of greater than or equal to about 9% and a maximum brightness of greater than or equal to about 10,000 candelas per square meter (cd/m2). | |||
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10 | US202028105A1 |
LIGHT EMITTING DEVICE AND DISPLAY DEVICE INCLUDING THE SAME
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Publication/Patent Number: US202028105A1 | Publication Date: 2020-01-23 | Application Number: 20/191,651 | Filing Date: 2019-07-16 | Inventor： Jang, Eun Joo Han, Moon Gyu Chung, Dae Young Park, Sujin Seo, Hongkyu | Assignee: Samsung Electronics Co., Ltd. | IPC: H01L51/50 | Abstract: A light emitting device including a first electrode and a second electrode facing each other, an emission layer disposed between the first electrode and the second electrode, the emission layer including quantum dots, and an electron auxiliary layer disposed between the emission layer and the second electrode, the electron auxiliary layer including nanoparticles and a small molecule organic compound and a display device including the same. The nanoparticles include a metal oxide including zinc, and an electron mobility of the small molecule organic compound is less than an electron mobility of the nanoparticles. | |||
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11 | EP3597724B1 |
LIGHT EMITTING DEVICE AND DISPLAY DEVICE INCLUDING THE SAME
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Publication/Patent Number: EP3597724B1 | Publication Date: 2020-11-11 | Application Number: 19186551.8 | Filing Date: 2019-07-16 | Inventor： Seo, Hongkyu Han, Moon Gyu Jang, Eun Joo Park, Sujin Chung, Dae Young | Assignee: Samsung Electronics Co., Ltd. | IPC: C09K11/70 | ||||
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12 | US2020263083A1 |
QUANTUM DOTS AND QUANTUM DOT SOLUTIONS
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Publication/Patent Number: US2020263083A1 | Publication Date: 2020-08-20 | Application Number: 16/791,327 | Filing Date: 2020-02-14 | Inventor： Kim, Tae Hyung Kim, Kwanghee Jang, Eun Joo Chung, Dae Young Park, Sujin | Assignee: SAMSUNG ELECTRONICS CO., LTD. | IPC: C09K11/02 | Abstract: Quantum dots including semiconductor nanocrystals, methods of producing the same, and quantum dot solutions and electronic devices including the same. The quantum dots do not include cadmium, lead, or a combination thereof. The quantum dots include an organic ligand and a halogen on the surfaces, and the quantum dots are dispersible in an organic solvent to form organic solutions. | |||
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13 | EP3597724A1 |
LIGHT EMITTING DEVICE AND DISPLAY DEVICE INCLUDING THE SAME
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Publication/Patent Number: EP3597724A1 | Publication Date: 2020-01-22 | Application Number: 19186551.8 | Filing Date: 2019-07-16 | Inventor： Seo, Hongkyu Han, Moon Gyu Jang, Eun Joo Park, Sujin Chung, Dae Young | Assignee: Samsung Electronics Co., Ltd. | IPC: C09K11/70 | Abstract: A light emitting device including a first electrode and a second electrode facing each other, an emission layer disposed between the first electrode and the second electrode, the emission layer including quantum dots, and an electron auxiliary layer disposed between the emission layer and the second electrode, the electron auxiliary layer including nanoparticles and a small molecule organic compound and a display device including the same. The nanoparticles include a metal oxide including zinc, and an electron mobility of the small molecule organic compound is less than an electron mobility of the nanoparticles. | |||
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14 | EP3683853A1 |
QUANTUM DOT DEVICE AND ELECTRONIC DEVICE
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Publication/Patent Number: EP3683853A1 | Publication Date: 2020-07-22 | Application Number: 19194920.5 | Filing Date: 2019-09-02 | Inventor： Kim, Sung Woo Park, Kun Su Chung, Dae Young Jang, Eun Joo | Assignee: Samsung Electronics Co., Ltd. | IPC: H01L51/50 | Abstract: A quantum dot device including an anode and a cathode facing each other; a quantum dot layer between the anode and the cathode; a hole transport layer between the anode and the quantum dot layer, the hole transport layer being configured to increase a hole transporting property from the anode to the quantum dot layer; an inorganic electron transport layer between the cathode and the quantum dot layer, the inorganic electron transport layer being configured to increase an electron transporting property from the cathode to the quantum dot layer; and an inorganic electron controlling layer between the cathode and the quantum dot layer, the inorganic electron controlling layer being configured to decrease an electron transporting property from the cathode to the quantum dot layer, and a display device including the same. | |||
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15 | EP3730589A2 |
LIGHT EMITTING DEVICE AND DISPLAY DEVICE INCLUDING THE SAME
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Publication/Patent Number: EP3730589A2 | Publication Date: 2020-10-28 | Application Number: 20171401.1 | Filing Date: 2020-04-24 | Inventor： Han, Moon Gyu Kim, Kwanghee Lee, Heejae Jang, Eun Joo Chung, Dae Young | Assignee: Samsung Electronics Co., Ltd. | IPC: C09K11/06 | Abstract: Provided are a light emitting device includes a first electrode and a second electrode facing each other; an emissive layer disposed between the first electrode and the second electrode and a display device including the same. The emissive layer comprises: a first emission layer disposed on the first electrode and having a hole transporting property; a second emission layer and a third emission layer disposed on the first emission layer; wherein the second emission layer comprises an organic compound having a bipolar transport property and the third emission layer has a composition different from the first emission layer and the second emission layer; wherein the first emission layer, the second emission layer, and the third emission layer comprises a plurality of quantum dots, and wherein the first emission layer, the second emission layer, and the third emission layer are configured to emit light of a same color. | |||
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16 | EP3730589A3 |
LIGHT EMITTING DEVICE AND DISPLAY DEVICE INCLUDING THE SAME
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Publication/Patent Number: EP3730589A3 | Publication Date: 2020-12-02 | Application Number: 20171401.1 | Filing Date: 2020-04-24 | Inventor： Han, Moon Gyu Kim, Kwanghee Lee, Heejae Jang, Eun Joo Chung, Dae Young | Assignee: Samsung Electronics Co., Ltd. | IPC: C09K11/06 | Abstract: Provided are a light emitting device includes a first electrode and a second electrode facing each other; an emissive layer disposed between the first electrode and the second electrode and a display device including the same. The emissive layer comprises: a first emission layer disposed on the first electrode and having a hole transporting property; a second emission layer and a third emission layer disposed on the first emission layer; wherein the second emission layer comprises an organic compound having a bipolar transport property and the third emission layer has a composition different from the first emission layer and the second emission layer; wherein the first emission layer, the second emission layer, and the third emission layer comprises a plurality of quantum dots, and wherein the first emission layer, the second emission layer, and the third emission layer are configured to emit light of a same color. | |||
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17 | US2020028105A1 |
LIGHT EMITTING DEVICE AND DISPLAY DEVICE INCLUDING THE SAME
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Publication/Patent Number: US2020028105A1 | Publication Date: 2020-01-23 | Application Number: 16/512,954 | Filing Date: 2019-07-16 | Inventor： Seo, Hongkyu Han, Moon Gyu Jang, Eun Joo Park, Sujin Chung, Dae Young | Assignee: SAMSUNG ELECTRONICS CO., LTD. | IPC: H01L51/50 | Abstract: A light emitting device including a first electrode and a second electrode facing each other, an emission layer disposed between the first electrode and the second electrode, the emission layer including quantum dots, and an electron auxiliary layer disposed between the emission layer and the second electrode, the electron auxiliary layer including nanoparticles and a small molecule organic compound and a display device including the same. The nanoparticles include a metal oxide including zinc, and an electron mobility of the small molecule organic compound is less than an electron mobility of the nanoparticles. | |||
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18 | US2020227663A1 |
QUANTUM DOT DEVICE AND ELECTRONIC DEVICE
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Publication/Patent Number: US2020227663A1 | Publication Date: 2020-07-16 | Application Number: 16/561,474 | Filing Date: 2019-09-05 | Inventor： Kim, Sung Woo Park, Kun Su Chung, Dae Young Jang, Eun Joo | Assignee: SAMSUNG ELECTRONICS CO., LTD. | IPC: H01L51/50 | Abstract: A quantum dot device including an anode and a cathode facing each other; a quantum dot layer between the anode and the cathode; a hole transport layer between the anode and the quantum dot layer, the hole transport layer being configured to increase a hole transporting property from the anode to the quantum dot layer; an inorganic electron transport layer between the cathode and the quantum dot layer, the inorganic electron transport layer being configured to increase an electron transporting property from the cathode to the quantum dot layer; and an inorganic electron controlling layer between the cathode and the quantum dot layer, the inorganic electron controlling layer being configured to decrease an electron transporting property from the cathode to the quantum dot layer, and an electronic device including the same. | |||
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19 | US10851298B2 |
Electronic device including quantum dots
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Publication/Patent Number: US10851298B2 | Publication Date: 2020-12-01 | Application Number: 16/554,839 | Filing Date: 2019-08-29 | Inventor： Won, Yuho Kwon, Ha Il Jang, Eun Joo Chang, Jaejun Chung, Dae Young | Assignee: SAMSUNG ELECTRONICS CO., LTD. | IPC: C09K11/88 | Abstract: An electroluminescent device includes a first electrode and a second electrode facing each other, and an emissive layer disposed between the first electrode and the second electrode and including the quantum dots. The quantum dots include a semiconductor nanocrystal core including indium (In) and phosphorous (P), a first semiconductor nanocrystal shell disposed on the semiconductor nanocrystal core, the first semiconductor nanocrystal shell including zinc and selenium, and a second semiconductor nanocrystal shell disposed on the first semiconductor nanocrystal shell, the second semiconductor nanocrystal shell including zinc and sulfur, wherein the quantum dots do not include cadmium. The electroluminescent device has an external quantum efficiency of greater than or equal to about 9% and a maximum brightness of greater than or equal to about 10,000 candelas per square meter (cd/m2). | |||
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20 | US2020313106A1 |
LIGHT EMITTING DEVICE AND DISPLAY DEVICE INCLUDING THE SAME
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Publication/Patent Number: US2020313106A1 | Publication Date: 2020-10-01 | Application Number: 16/832,004 | Filing Date: 2020-03-27 | Inventor： Kim, Kwanghee Chung, Dae Young Kim, Tae Hyung Jang, Eun Joo Han, Moon Gyu | Assignee: SAMSUNG ELECTRONICS CO., LTD. | IPC: H01L51/50 | Abstract: An electroluminescent device including a first electrode and a second electrode facing each other, and a quantum dot emission layer disposed between the first electrode and the second electrode and a method of manufacturing the same. The quantum dot emission layer does not include cadmium and lead, the quantum dot emission layer includes a first layer including first quantum dots, facing the first electrode, a second layer including second quantum dots, facing the second electrode, and a third layer including third quantum dots, disposed between the first layer and the second layer, wherein a highest occupied molecular orbital energy level of the third layer is less than a highest occupied molecular orbital energy level of the layer and the highest occupied molecular orbital energy level of the third layer is less than a highest occupied molecular orbital energy level of the second layer. |
3.Current Quota