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41
KR20190106825A
SEMICONDUCTOR NANOCRYSTAL PARTICLES PRODUCTION METHODS THEREOF AND DEVICES INCLUDING THE SAME
Publication/Patent Number: KR20190106825A Publication Date: 2019-09-18 Application Number: 20190027402 Filing Date: 2019-03-11 Inventor: Lee, Jeong Hee   Kim, Sung Woo   Cho, Oul   Kim, Tae Hyung   Won, Yu Ho   Jang, Eun Joo   Kim, Jin A   Assignee: SAMSUNG ELECTRONICS CO., LTD.   IPC: H01L51/56 Abstract: 아연, 텔루리움, 및 셀레늄을 포함하는 제1 반도체 나노결정을 포함하는 코어 및 상기 코어 위에 배치되고 아연, 텔루리움, 셀레늄, 및 황을 포함하는 반도체 나노결정 쉘을 가지는 양자점, 그의 제조 방법, 및 이를 포함하는 전자 소자에 대한 것이다. 상기 양자점은, 카드뮴을 포함하지 않고, 셀레늄에 대한 텔루리움의 몰 비가 0.06 이하이며, 상기 양자점의 광발광 피크 파장은 450 nm 이상 및 470 nm 이하이고, 상기 양자점의 광발광 피크의 반치폭은 41 nm 이하이다.
42
KR20190057733A
QUANTUM DOT DEVICE AND DISPLAY DEVICE
Publication/Patent Number: KR20190057733A Publication Date: 2019-05-29 Application Number: 20170155034 Filing Date: 2017-11-20 Inventor: Seo, Hong Kyu   Kim, Sung Woo   Cho, Oul   Chung, Dae Young   Kim, Tae Ho   Jang, Eun Joo   Lee, Sang Jin   Assignee: SAMSUNG ELECTRONICS CO., LTD.   IPC: H01L33/06 Abstract: The present invention provides a quantum dot element capable of realizing improved performance. The quantum dot element comprises: a first electrode and a second electrode facing each other; a quantum dot layer located between the first electrode and the second electrode; and an electron auxiliary layer located between the quantum dot layer and the second electrode and including a first nanoparticle and a second nano particle which is larger than the first nanoparticle. A work function of the first electrode is higher than the work function of the second electrode, and a difference of LUMO energy levels between the quantum dot layer and the electron auxiliary layer is less than 1.1 eV.
43
US2019157596A1
QUANTUM DOT DEVICE AND DISPLAY DEVICE
Publication/Patent Number: US2019157596A1 Publication Date: 2019-05-23 Application Number: 16/034,442 Filing Date: 2018-07-13 Inventor: Kim, Sung Woo   Kim, Tae Ho   Jang, Eun Joo   Seo, Hongkyu   Lee, Sang Jin   Chung, Dae Young   Cho, Oul   Assignee: SAMSUNG ELECTRONICS CO., LTD.   IPC: H01L51/50 Abstract: A quantum dot device includes: a first electrode and a second electrode facing each other; a quantum dot layer between the first electrode and the second electrode, and an electron auxiliary layer between the quantum dot layer and the second electrode, the electron auxiliary layer including a first nanoparticle and a second nanoparticle which is larger than the first nanoparticle, wherein a work function of the first electrode is greater than a work function of the second electrode, and wherein a difference between a lowest unoccupied molecular orbital energy level of the quantum dot layer and a lowest unoccupied molecular orbital energy level of the electron auxiliary layer is less than about 1.1 electronvolts.
44
US2019326539A1
ELECTROLUMINESCENT DEVICE, AND DISPLAY DEVICE COMPRISING THEREOF
Publication/Patent Number: US2019326539A1 Publication Date: 2019-10-24 Application Number: 16/356,148 Filing Date: 2019-03-18 Inventor: Chung, Dae Young   Han, Moon Gyu   Cho, Oul   Kim, Tae Hyung   Park, Sujin   Seo, Hongkyu   Jang, Eun Joo   Assignee: SAMSUNG ELECTRONICS CO., LTD.   IPC: H01L51/50 Abstract: An electroluminescent device including a first electrode, a hole transport layer disposed on the first electrode, a first emission layer disposed on the hole transport layer, the first emission layer including a first light emitting particle on which a first ligand having a hole transporting property is attached, a second emission layer disposed on the first emission layer, the second emission layer including a second light emitting particle on which a second ligand having an electron transporting property is attached, an electron transport layer disposed on the second emission layer, and a second electrode disposed on the electron transport layer, wherein a solubility of the first ligand in a solvent is different than a solubility of the second ligand in the solvent and a display device including the same.
45
JP2019165006A
ELECTROLUMINESCENCE ELEMENT AND DISPLAY DEVICE INCLUDING THE SAME
Publication/Patent Number: JP2019165006A Publication Date: 2019-09-26 Application Number: 2019050712 Filing Date: 2019-03-19 Inventor: Chung, Daeyoung   Cho, Ginshu   Kin, Taikyo   Han, Moon Gyu   Cho, Oul   Park, Soo-jin   Xu, Hong Gui   Assignee: SAMSUNG ELECTRONICS CO LTD   IPC: H05B33/12 Abstract: To provide an electroluminescence element in which life property and color purity are improved by minimizing excitor extinction, and to provide a display device including the same.SOLUTION: An electroluminescence element has a first electrode, a positive hole transport layer located on the first electrode, a first luminous layer located on the positive hole transport layer and to which first ligand having positive hole transport property is adhered, a second luminous layer located on the first luminous layer, and to which second ligand having an electron transport property is adhered, an electron transport layer located on the second luminous layer, and a second electrode located on the electron transport layer, where solubility of the first ligand for solvent and solubility of the second ligand for solvent are different from each other.SELECTED DRAWING: Figure 1
46
KR20190106824A
ELECTROLUMINESCENT DISPLAY DEVICE
Publication/Patent Number: KR20190106824A Publication Date: 2019-09-18 Application Number: 20190027401 Filing Date: 2019-03-11 Inventor: Kim, Yong Wook   Cho, Oul   Kim, Tae Hyung   Won, Yu Ho   Chung, Dae Young   Jang, Eun Joo   Assignee: SAMSUNG ELECTRONICS CO., LTD.   IPC: H01L51/50 Abstract: 적색 화소, 녹색 화소, 및 청색 화소를 포함하는 전계 발광(EL) 표시 장치가 제공된다. 상기 장치는, 서로 마주보는 제1 전극과 제2 전극; 그리고, 상기 제1 전극과 상기 제2 전극 사이에 배치되고, 복수개의 양자점을 포함하며, 카드뮴을 포함하지 않는 양자점 발광층을 포함하고, 상기 양자점 발광층은, 상기 적색 화소 내에 배치된 적색 발광층, 상기 녹색 화소 내에 배치된 녹색 발광층, 및 상기 청색 화소 내에 배치된 청색 발광층을 포함하고, 상기 적색 발광층은, 복수개의 적색 발광 양자점들을 포함하고, 상기 적색 화소가, 627 nm 내지 640 nm 의 범위에서 전계 발광(EL) 피크 파장 및 42 nm 이하의 반치폭을 나타내며, 상기 녹색 발광층은, 복수개의 녹색 발광 양자점들을 포함하고, 상기 녹색 화소가 525 nm 내지 536 nm 의 범위에서 전계 발광 피크 파장 및 39 nm 이하의 반치폭을 나타내며, 상기 청색 발광층은, 복수개의 청색 발광 양자점들을 포함하고, 상기 청색 화소가 440 nm 내지 460 nm 의 범위에서 전계 발광 피크 파장 및 33 nm 이하의 반치폭을 나타내며, 향상된 색재현율을 가진다.
47
EP3544074A2
ELECTROLUMINESCENT DEVICE, AND DISPLAY DEVICE COMPRISING THEREOF
Publication/Patent Number: EP3544074A2 Publication Date: 2019-09-25 Application Number: 19163844.4 Filing Date: 2019-03-19 Inventor: Chung, Dae Young   Han, Moon Gyu   Cho, Oul   Kim, Tae Hyung   Park, Sujin   Seo, Hongkyu   Jang, Eun Joo   Assignee: Samsung Electronics Co., Ltd.   IPC: H01L51/50 Abstract: An electroluminescent device (10) including a first electrode (110), a hole transport layer (130) disposed on the first electrode, a first emission layer (140) disposed on the hole transport layer, the first emission layer including a first light emitting particle (141) on which a first ligand having a hole transporting property is attached, a second emission layer (150) disposed on the first emission layer, the second emission layer including a second light emitting particle (151) on which a second ligand having an electron transporting property is attached, an electron transport layer (160) disposed on the second emission layer, and a second electrode (170) disposed on the electron transport layer, wherein a solubility of the first ligand in a solvent is different than a solubility of the second ligand in the solvent and a display device including the same.
48
US2019276734A1
QUANTUM DOTS, PRODUCTION METHODS THEREOF, AND LIGHT EMITTING DEVICE INCLUDING THE SAME
Publication/Patent Number: US2019276734A1 Publication Date: 2019-09-12 Application Number: 16/297,965 Filing Date: 2019-03-11 Inventor: Kim, Kwanghee   Chang, Jaejun   Cho, Oul   Kim, Tae Hyung   Lee, Sang Jin   Jang, Eun Joo   Jeong, Young-soo   Han, Moon Gyu   Assignee: SAMSUNG ELECTRONICS CO., LTD.   IPC: C09K11/02 Abstract: A quantum dot, and a light emitting device including the same is provided. The quantum dot includes a semiconductor nanocrystal and an organic ligand bound to the surface of the semiconductor nanocrystal, wherein the organic ligand includes a first ligand derived from a first thiol compound including a C12 or more aliphatic hydrocarbon group, and a second ligand derived from a second thiol compound including a C8 or less aliphatic hydrocarbon group.
49
KR20190106819A
QUANTUM DOTS PRODUCTION METHODS THEREOF AND LIGHT EMITTING DEVICE INCLUDING THE SAME
Publication/Patent Number: KR20190106819A Publication Date: 2019-09-18 Application Number: 20190027161 Filing Date: 2019-03-08 Inventor: Lee, Sang Jin   Han, Moon Gyu   Cho, Oul   Kim, Tae Hyung   Jeong, Young Soo   Jang, Eun Joo   Chang, Jae Jun   Kim, Kwang Hee   Assignee: SAMSUNG ELECTRONICS CO., LTD.   IPC: C09K11/02 Abstract: 양자점, 및 이를 포함하는 발광 소자에 대한 것이다. 상기 양자점은 반도체 나노결정 및 상기 반도체 나노결정의 표면에 유기 리간드를 포함하고, 상기 유기 리간드는 탄소수 12 이상 의 지방족 탄화수소기를 가지는 제1 티올 화합물로부터 유래된 제1 리간드, 및 탄소수 8 이하를 가지는 제2 티올 화합물로부터 유래된 제2 리간드를 포함한다.
50
US10191326B2
Film for backlight unit and backlight unit and liquid crystal display including same
Publication/Patent Number: US10191326B2 Publication Date: 2019-01-29 Application Number: 15/366,579 Filing Date: 2016-12-01 Inventor: Jung, Chul Ho   Kang, Hyun A   Kwon, Soo Kyung   Lee, Won Joo   Jang, Eun Joo   Jang, Hyo Sook   Jun, Shin Ae   Cho, Oul   Han, In Taek   Assignee: SAMSUNG ELECTRONICS CO., LTD.   IPC: G02F1/13357 Abstract: A film for a backlight unit including a semiconductor nanocrystal-polymer composite film including a semiconductor nanocrystal and a matrix polymer in which the semiconductor nanocrystal is dispersed, wherein the matrix polymer is a polymer produced by a polymerization of a multifunctional photo-curable oligomer, a mono-functional photo-curable monomer, and a multifunctional photo-curable cross-linking agent, the multifunctional photo-curable oligomer has an acid value of less than or equal to about 0.1 mg of KOH/g, and a content (A1) of a first structural unit derived from the multifunctional photo-curable oligomer, a content (A2) of a second structural unit derived from the mono-functional photo-curable monomer, and a content (A3) of a third structural unit derived from the multifunctional photo-curable cross-linking agent satisfy Equation 1: A1<(A2+A3).  Equation 1
51
US9933658B2
Backlight unit and liquid crystal display device including the same
Publication/Patent Number: US9933658B2 Publication Date: 2018-04-03 Application Number: 15/453,948 Filing Date: 2017-03-09 Inventor: Jang, Eun-joo   Kang, Hyun-a   Cho, Oul   Assignee: SAMSUNG ELECTRONICS CO., LTD.   IPC: F21V8/00 Abstract: A backlight unit for a liquid crystal display device including a liquid crystal panel, includes: a light source including a light-emitting diode (“ED”) which generates and emits light; and a light converting layer between the light source and the liquid crystal panel, spaced apart from the light source, and converting the light from the light source into white light and emitting the white light toward the liquid crystal panel. The light converting layer includes: semiconductor nanocrystals, and a barrier material which restricts penetration of moisture or oxygen.
52
US2018180944A1
BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE INCLUDING THE SAME
Publication/Patent Number: US2018180944A1 Publication Date: 2018-06-28 Application Number: 15/887,015 Filing Date: 2018-02-02 Inventor: Cho, Oul   Kang, Hyun-a   Jang, Eun-joo   Assignee: Samsung Electronics Co., Ltd.   IPC: F21V8/00 Abstract: A backlight unit for a liquid crystal display device including a liquid crystal panel, includes: a light source including a light-emitting diode (“ED”) which generates and emits light; and a light converting layer between the light source and the liquid crystal panel, spaced apart from the light source, and converting the light from the light source into white light and emitting the white light toward the liquid crystal panel. The light converting layer includes: semiconductor nanocrystals, and a barrier material which restricts penetration of moisture or oxygen.
53
US10001671B2
Nanocrystal polymer composites and production methods thereof
Publication/Patent Number: US10001671B2 Publication Date: 2018-06-19 Application Number: 15/707,195 Filing Date: 2017-09-18 Inventor: Cho, Oul   Jun, Shin Ae   Jang, Eun Joo   Kang, Hyun A   Won, Na Youn   Assignee: SAMSUNG ELECTRONICS CO., LTD.   IPC: C09K11/00 Abstract: A semiconductor nanocrystal composition including a semiconductor nanocrystal, an organic additive, and at least one polymerizable substance selected from a polymerizable monomer, a polymerizable oligomer, and a combination thereof, wherein the composition has haze of greater than or equal to about 40% after polymerization.
54
US10053556B2
Barrier coating compositions, composites prepared therefrom, and quantum dot polymer composite articles including the same
Publication/Patent Number: US10053556B2 Publication Date: 2018-08-21 Application Number: 14/920,189 Filing Date: 2015-10-22 Inventor: Koh, Haeng Deog   Cho, Oul   Won, Nayoun   Kang, Hyun A   Jang, Eunjoo   Kikuchi, Tomoyuki   Assignee: SAMSUNG ELECTRONICS CO., LTD.   IPC: C08F226/06 Abstract: A barrier coating composition including: a monomer combination including a first monomer having at least two thiol groups at its terminal end and a second monomer having at least two carbon-carbon unsaturated bond-containing groups at its terminal end; and a plurality of organo-modified clay particles dispersed in the monomer combination, wherein the organo-modified clay particles include a compound having a hydrocarbyl group linked to a heteroatom, and wherein the compound is a primary, secondary, or tertiary amine, a quaternary organoammonium salt, a primary, secondary, or tertiary phosphine, a quaternary organophosphonium salt, a thiol including an amine group, or a combination thereof.
55
US2018031926A1
NANOCRYSTAL POLYMER COMPOSITES AND PRODUCTION METHODS THEREOF
Publication/Patent Number: US2018031926A1 Publication Date: 2018-02-01 Application Number: 15/707,195 Filing Date: 2017-09-18 Inventor: Jun, Shin Ae   Jang, Eun Joo   Kang, Hyun A   Cho, Oul   Jang, Eun Joo   Assignee: Samsung Electronics Co., Ltd.   Samsung Electronics_2   IPC: F21V8/00 Abstract: A semiconductor nanocrystal composition including a semiconductor nanocrystal, an organic additive, and at least one polymerizable substance selected from a polymerizable monomer, a polymerizable oligomer, and a combination thereof, wherein the composition has haze of greater than or equal to about 40% after polymerization.
56
EP3288095A3
ELECTRIC DEVICE, AND DISPLAY DEVICE COMPRISING THE SAME
Publication/Patent Number: EP3288095A3 Publication Date: 2018-03-07 Application Number: 17186686.6 Filing Date: 2017-08-17 Inventor: Chung, Dae Young   Jang, Eun Joo   Cho, Oul   Kang, Hyun   Kim, Tae Hyung   Woo, Yun Sung   Lee, Jeong Hee   Assignee: Samsung Electronics Co., Ltd.   IPC: H01L51/50 Abstract: An electronic device (100) includes a first electrode (10) and a second electrode (20) facing each other, an emission layer (30) comprising a plurality of quantum dots (3), wherein the emission layer is disposed between the first electrode and the second electrode; a first charge auxiliary layer (40) disposed between the first electrode and the emission layer; and an optical functional layer (60) disposed on the second electrode on a side opposite the emission layer, wherein the first electrode includes a reflecting electrode (12), 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 (60) is greater than or equal to a refractive index of the second electrode (20).
57
US2018062030A1
ELECTRIC DEVICE, AND DISPLAY DEVICE COMPRISING THE SAME
Publication/Patent Number: US2018062030A1 Publication Date: 2018-03-01 Application Number: 15/483,651 Filing Date: 2017-04-10 Inventor: Chung, Dae Young   Jang, Eun Joo   Cho, Oul   Kang, Hyun A   Kim, Tae Hyung   Woo, Yun Sung   Lee, Jeong Hee   Assignee: SAMSUNG ELECTRONICS CO., LTD.   IPC: H01L33/04 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.
58
EP3288095A2
ELECTRIC DEVICE, AND DISPLAY DEVICE COMPRISING THE SAME
Publication/Patent Number: EP3288095A2 Publication Date: 2018-02-28 Application Number: 17186686.6 Filing Date: 2017-08-17 Inventor: Chung, Dae Young   Jang, Eun Joo   Cho, Oul   Kang, Hyun   Kim, Tae Hyung   Woo, Yun Sung   Lee, Jeong Hee   Assignee: Samsung Electronics Co., Ltd.   IPC: H01L51/50 Abstract: An electronic device (100) includes a first electrode (10) and a second electrode (20) facing each other, an emission layer (30) comprising a plurality of quantum dots (3), wherein the emission layer is disposed between the first electrode and the second electrode; a first charge auxiliary layer (40) disposed between the first electrode and the emission layer; and an optical functional layer (60) disposed on the second electrode on a side opposite the emission layer, wherein the first electrode includes a reflecting electrode (12), 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 (60) is greater than or equal to a refractive index of the second electrode (20).
59
US201862030A1
ELECTRIC DEVICE, AND DISPLAY DEVICE COMPRISING THE SAME
Publication/Patent Number: US201862030A1 Publication Date: 2018-03-01 Application Number: 20/171,548 Filing Date: 2017-04-10 Inventor: Kim, Tae Hyung   Lee, Jeong Hee   Jang, Eun Joo   Cho, Oul   Kang, Hyun A   Shin, Weon Ho   Jang, Hyo Sook   Assignee: Samsung Electronics Co., Ltd.   IPC: H01L33/14 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.
60
KR20180022134A
ELECTRIC DEVICE AND DISPLAY DEVICE COMPRISING THE SAME
Publication/Patent Number: KR20180022134A Publication Date: 2018-03-06 Application Number: 20160107064 Filing Date: 2016-08-23 Inventor: Jang, Eun Joo   Kim, Tae Hyung   Lee, Jeong Hee   Woo, Yun Sung   Kang, Hyun A   Chung, Dae Young   Cho, Oul   Assignee: Samsung Electronics Co., Ltd.   IPC: H01L51/52 Abstract: The present invention relates to an electric device and a display device comprising the same. The electric device includes a first electrode and a second electrode facing each other, a light emitting layer disposed between the first electrode and the second electrode and including a plurality of quantum dots, a charge assist layer positioned between the first electrode and the light emitting layer, and an optical function layer disposed opposite to the light emitting layer with respect to the second electrode and facing the surface of the second electrode. The first electrode includes a reflective electrode. The second electrode is a light-transmitting electrode. The optical function layer forms fine resonance with the first electrode. The refractive index of the optical functional layer is equal to or greater than the refractive index of the second electrode. It is possible to provide an electronic device having excellent luminous efficiency.
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