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1.发明公开公开(公告)号：US20240099045A1
公开(公告)日：2024-03-21
申请号：US18368010
申请日：2023-09-13
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Heejae LEE , Tae Ho KIM , Jun-Mo YOO , Ilyoung LEE , Shin Ae JUN , Dae Young CHUNG , Moon Gyu HAN
IPC: H10K50/115 , H10K50/828 , H10K71/12
CPC classification number: H10K50/115 , H10K50/828 , H10K71/12 , H10K2102/351
Abstract: Provided are an electroluminescent device, a method of manufacturing the same, and a display device including the same, the electroluminescent device including a first electron auxiliary layer, a first light emitting layer, and a first electrode disposed on a first surface of a transparent electrode; and a second electron auxiliary layer, a second light emitting layer, and a second electrode disposed on a second surface of the transparent electrode, wherein the first electron auxiliary layer and the second electron auxiliary layer each include a plurality of zinc oxide nanoparticles, a ratio (t1/t0) of a thickness (t1) of the first electron auxiliary layer to a thickness (t0) of the transparent electrode and a ratio (t2/t0) of a thickness (t2) of the second electron auxiliary layer to the thickness (t0) of the transparent electrode are each in the range of about 0.1 to about 4.0.
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公开(公告)号：US20210119164A1
公开(公告)日：2021-04-22
申请号：US17132971
申请日：2020-12-23
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Tae Ho KIM , Sung Woo KIM , Eun Joo JANG , Dae Young CHUNG
Abstract: An electroluminescent device comprising 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, wherein the electron transport layer comprises an inorganic layer disposed on the emission layer, the inorganic layer comprising a plurality of inorganic nanoparticles; and an organic layer directly disposed on at least a portion of the inorganic layer on a side opposite the emission layer, wherein a work function of the organic layer is greater than a work function of the inorganic layer.
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公开(公告)号：US20200343487A1
公开(公告)日：2020-10-29
申请号：US16857727
申请日：2020-04-24
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Moon Gyu HAN , Kwanghee KIM , Heejae LEE , Eun Joo JANG , Dae Young CHUNG
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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公开(公告)号：US20200227663A1
公开(公告)日：2020-07-16
申请号：US16561474
申请日：2019-09-05
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Sung Woo KIM , Kun Su PARK , Dae Young CHUNG , Eun Joo JANG
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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公开(公告)号：US20200071612A1
公开(公告)日：2020-03-05
申请号：US16554839
申请日：2019-08-29
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Yuho WON , Ha Il KWON , Eun Joo JANG , Jaejun CHANG , Dae Young CHUNG
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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Patent Agency Ranking
公开(公告)号：US20190393418A1
公开(公告)日：2019-12-26
申请号：US16451443
申请日：2019-06-25
Applicant: SAMSUNG ELECTRONICS CO., LTD
Inventor： Jaejun CHANG , O Hyun KWON , Tae Hyung KIM , Jhun Mo SON , Sang Jin LEE , Eun Joo JANG , Dae Young CHUNG
Abstract: A semiconductor nanocrystal-ligand composite, including a semiconductor nanocrystal and a ligand layer including an organic ligand coordinated on a surface of the semiconductor nanocrystal, wherein the organic ligand includes a compound represented by Chemical Formula 1, compound represented by Chemical Formula 2, or a combination thereof, and wherein Chemical Formula 1 and Chemical Formula 2 are the same as described in detailed herein.
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公开(公告)号：US20190280235A1
公开(公告)日：2019-09-12
申请号：US16299944
申请日：2019-03-12
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Tae Ho KIM , Sung Woo KIM , Eun Joo JANG , Dae Young CHUNG
Abstract: An electroluminescent device comprising 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, wherein the electron transport layer comprises an inorganic layer disposed on the emission layer, the inorganic layer comprising a plurality of inorganic nanoparticles; and an organic layer directly disposed on at least a portion of the inorganic layer on a side opposite the emission layer, wherein a work function of the organic layer is greater than a work function of the inorganic layer.
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8.发明申请公开(公告)号：US20180179441A1
公开(公告)日：2018-06-28
申请号：US15855436
申请日：2017-12-27
Inventor： Young Seok PARK , Shang Hyeun PARK , Eun Joo JANG , Hyo Sook JANG , Shin Ae JUN , Dae Young CHUNG , Taekhoon KIM , Yuho WON
CPC classification number: C09K11/883 , B82Y30/00 , B82Y40/00 , C09K11/025 , G02B5/22 , G02B5/223 , H01L27/322 , H01L51/0035 , H01L51/0037 , H01L51/0039 , H01L51/502 , Y10S977/774 , Y10S977/818 , Y10S977/824 , Y10S977/892 , Y10S977/896 , Y10S977/95
Abstract: A process for preparing a quantum dot of a core-shell structure including obtaining a first mixture including first precursor including a first metal, a ligand compound, and a solvent; adding a second precursor and a particle including a first semiconductor nanocrystal to the first mixture to obtain a second mixture; and heating the second mixture up to a reaction temperature and performing a reaction between the first precursor and the second precursor to form a layer of a shell including a crystalline or amorphous material, during formation of the layer of the shell or after formation of the layer of the shell, wherein the process includes adding an organic solution including an ammonium fluorinated salt including a solid salt having a melting point of greater than or equal to about 110° C. to the second mixture.
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公开(公告)号：US20240224564A1
公开(公告)日：2024-07-04
申请号：US18512352
申请日：2023-11-17
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Won Sik YOON , Ju Hyun KIM , Ha Il KWON , Kwang Hee KIM , Taehyung KIM , Su Jin PARK , Dae Young CHUNG
IPC: H10K50/115 , H10K50/15 , H10K50/16
CPC classification number: H10K50/115 , H10K50/156 , H10K50/16
Abstract: A quantum dot device including an anode and a cathode, a light emitting layer disposed between the anode and the cathode, the light emitting layer comprising quantum dots, a first hole auxiliary layer disposed on the anode, the first hole auxiliary layer including poly(3,4-ethylenedioxythiophene)-polystyrenesulfonate or a derivative thereof (PEDOT:PSS), a second hole auxiliary layer disposed on the first hole auxiliary layer and including a hole transport material different from the PEDOT:PSS, wherein the light emitting layer is disposed on the second hole auxiliary layer, wherein the first hole auxiliary layer has a first surface facing the anode and a second surface facing the second hole auxiliary layer, and the second surface includes a surface modification region including a surface modification material having a carboxylic acid group, a phosphonic acid group, a sulfonic acid group, or a salt thereof. An electronic device that includes the quantum dot device.
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公开(公告)号：US20220213022A1
公开(公告)日：2022-07-07
申请号：US17560931
申请日：2021-12-23
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Fumiaki KATO , Tomoyuki KIKUCHI , Hiroko ENDO , Keigo FURUTA , Keisuke KORAI , Mitsunori ITO , Naotoshi SUGANUMA , Takao MOTOYAMA , Dae Young CHUNG , Eun Joo JANG , Ha Il KWON , Hyo Sook JANG , Soonmin CHA , Tae Ho KIM
IPC: C07C211/54 , H01L51/00 , C07C211/61 , C07D209/82
Abstract: Provided is a compound represented by Chemical Formula 1 capable of manufacturing an EL device by inkjet printing. In Chemical Formula 1, n is an integer of greater than or equal to 3 and less than or equal to 10, X is a group represented by Chemical Formula 2 and a plurality of X's may be the same or different from each other, and Y is a group represented by Chemical Formula 3 and a plurality of Y's may be the same or different from each other.
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