Country
Full text data for US,EP,CN
Type
Legal Validity
Legal Status
Filing Date
Publication Date
Inventor
Assignee
Click to expand
IPC(Section)
IPC(Class)
IPC(Subclass)
IPC(Group)
IPC(Subgroup)
Agent
Agency
Claims Number
Figures Number
Citation Number of Times
Assignee Number
No. Publication Number Title Publication/Patent Number Publication/Patent Number Publication Date Publication Date
Application Number Application Number Filing Date Filing Date
Inventor Inventor Assignee Assignee IPC IPC
1
EP3490020B1
QUANTUM DOT DEVICE AND ELECTRONIC DEVICE
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
2
US2021040388A1
ELECTRONIC DEVICE INCLUDING QUANTUM DOTS
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).
3
US2021005834A1
LIGHT EMITTING DEVICE AND DISPLAY DEVICE INCLUDING THE SAME
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.
4
US2020111933A1
LIGHT EMITTING DEVICE AND DISPLAY DEVICE INCLUDING THE SAME
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.
5
US10547018B2
Electroluminescent device, and display device comprising the same
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.
6
US2020328368A1
ELECTRIC DEVICE AND DISPLAY DEVICE COMPRISING THE SAME
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.
7
EP3617292A1
ELECTRONIC DEVICE INCLUDING QUANTUM DOTS
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).
8
US2020343487A1
LIGHT EMITTING DEVICE AND DISPLAY DEVICE INCLUDING THE SAME
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.
9
US2020071612A1
ELECTRONIC DEVICE INCLUDING QUANTUM DOTS
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).
10
US202028105A1
LIGHT EMITTING DEVICE AND DISPLAY DEVICE INCLUDING THE SAME
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.
11
EP3597724B1
LIGHT EMITTING DEVICE AND DISPLAY DEVICE INCLUDING THE SAME
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
12
US2020263083A1
QUANTUM DOTS AND QUANTUM DOT SOLUTIONS
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.
13
EP3597724A1
LIGHT EMITTING DEVICE AND DISPLAY DEVICE INCLUDING THE SAME
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.
14
EP3683853A1
QUANTUM DOT DEVICE AND ELECTRONIC DEVICE
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.
15
EP3730589A2
LIGHT EMITTING DEVICE AND DISPLAY DEVICE INCLUDING THE SAME
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.
16
EP3730589A3
LIGHT EMITTING DEVICE AND DISPLAY DEVICE INCLUDING THE SAME
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.
17
US2020028105A1
LIGHT EMITTING DEVICE AND DISPLAY DEVICE INCLUDING THE SAME
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.
18
US2020227663A1
QUANTUM DOT DEVICE AND ELECTRONIC DEVICE
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.
19
US10851298B2
Electronic device including quantum dots
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).
20
US2020313106A1
LIGHT EMITTING DEVICE AND DISPLAY DEVICE INCLUDING THE SAME
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.
Total 8 pages