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公开(公告)号：US20220199904A1
公开(公告)日：2022-06-23
申请号：US17442893
申请日：2019-03-29
发明人： Toshiaki SASADA , Ryuji MATSUMOTO
IPC分类号： H01L51/00
摘要： A light emitting device having an anode, a cathode, and an organic layer disposed between the anode and the cathode and containing a composition is described. The composition contains a compound (A) represented by the formula (FH) and a compound (B) having a condensed hetero ring skeleton (b) containing a boron atom and a nitrogen atom in the ring, and the molecular weight (MA) of the compound (A) and the molecular weight (MB) of the compound (B) satisfy the formula (M1-1) and the formula (M2-1).
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公开(公告)号：US20210175454A1
公开(公告)日：2021-06-10
申请号：US16642475
申请日：2019-05-16
发明人： Toshiaki SASADA , Ryuji MATSUMOTO
摘要： A composition for a light-emitting element contains a host material and a guest material. The host material is a compound containing at least one of an aromatic hydrocarbon group and a heterocyclic group and the guest material is a compound having a condensed heterocyclic group containing at least one of a boron atom, an oxygen atom, a sulfur atom, a selenium atom, an sp3 carbon atom, and a nitrogen atom in a ring. A difference ΔE between an energy value at the maximum peak of a emission spectrum of the host material at 25° C. and an energy value at a peak on the lowest energy side of an absorption spectrum of the guest material at 25° C. is 0.50 eV or less, and a difference ΔS between an energy value at the maximum peak of an emission spectrum of the guest material at 25° C. and an energy value at the maximum peak of an emission spectrum of the guest material at 77 K is 0.10 eV or less.
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公开(公告)号：US20200216480A1
公开(公告)日：2020-07-09
申请号：US16080360
申请日：2017-03-07
摘要： A light emitting device having excellent luminance life contains an anode, a cathode, and two organic layers disposed between them. The first layer contains a phosphorescent compound having formula (1) and a compound having formula (H), and the second layer contains a crosslinked body of a crosslinkable material. M represents Ir, n1 represents an integer of 1 or more, n2 represents an integer of 0 or more, E1 and E2 each represent a carbon atom, ring L1 represents an aromatic heterocyclic ring, ring L2 represents an aromatic hydrocarbon ring, and A1-G1-A2 represents an anionic bidentate ligand. nH1 represents an integer of 0 to 5, nH2 represents an integer of 1 to 10, ArH1 has formula (H1-1), LH1 represents an alkylene or arylene group, and ArH2 represents an aromatic heterocyclic group. Ring RH1 and ring RH2 each represent a monocyclic or fused-ring aromatic heterocyclic ring, and XH1 represents a single bond.
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4.发明申请公开(公告)号：US20190214569A1
公开(公告)日：2019-07-11
申请号：US16333871
申请日：2017-09-27
IPC分类号： H01L51/00
CPC分类号： H01L51/0061 , H01L51/0003 , H01L51/0039 , H01L51/0043 , H01L51/0067 , H01L51/007 , H01L51/0072 , H01L51/0073 , H01L51/0074 , H01L51/50 , H01L51/5012 , H01L51/5016 , H01L51/5088 , H01L51/5092 , H01L2251/5376
摘要： A light emitting device having an anode, a cathode, a first organic layer disposed between the anode and the cathode and a second organic layer disposed between the anode and the cathode is provided. The first organic layer is a layer containing a compound (T) in which the absolute value of the difference between the energy level at the lowest triplet excited state and the energy level at the lowest singlet excited state is 0.5 eV or less and not containing a phosphorescent metal complex. The second organic layer is a layer containing a crosslinked body of a polymer compound containing a crosslink constitutional unit and the energy level at the lowest triplet excited state of the polymer compound is 2.25 eV or more.
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公开(公告)号：US20180022990A1
公开(公告)日：2018-01-25
申请号：US15547962
申请日：2016-01-15
发明人： Toshiaki SASADA , Takakazu SAITO
CPC分类号： C09K11/06 , C07F15/00 , C09K11/025 , C09K2211/1007 , C09K2211/1059 , C09K2211/1074 , C09K2211/185 , H01L51/0003 , H01L51/0039 , H01L51/0085 , H01L51/50 , H01L51/5016
摘要： Provided is a composition useful for producing a light emitting device in which the driving voltage is low. In particular, a composition containing a phosphorescent compound of formula (1) and a phosphorescent compound of formula (2) is provided, wherein the variable groups are as defined in the specification.
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公开(公告)号：US20220102642A1
公开(公告)日：2022-03-31
申请号：US17418105
申请日：2019-12-06
发明人： Toshiaki SASADA , Ryuji MATSUMOTO
IPC分类号： H01L51/00 , C07C15/28 , C09K11/06 , C07C211/61
摘要： A composition which is useful for production of a light emitting device of which initial deterioration is suppressed, and a light emitting device formed using the composition, are provided. The composition contains a host material and a guest material blended therein. The host material contains an aromatic compound having a condensed ring skeleton in which only three or more benzene rings are condensed. The guest material contains an aromatic amine compound. The total amount of sodium atoms contained in the host material and sodium atoms contained in the guest material is 400 ppb by mass or less with respect to the total amount of the host material and the guest material.
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公开(公告)号：US20210159416A1
公开(公告)日：2021-05-27
申请号：US16642412
申请日：2017-09-06
摘要： A light emitting device having excellent external quantum efficiency contains an anode, a cathode, and two organic layers disposed therebetween. One layer contains a phosphorescent transition metal complex and a low molecular weight compound containing no transition metal, and the second layer contains a crosslinked body of a polymer compound (having an energy level of the lowest triplet excited state of 2.30 eV or more) containing a constitutional unit having a crosslinking group. The low molecular weight compound has formula (T-1) and the absolute value of the difference between the energy levels of the lowest triplet excited state and the lowest singlet excited state is less than 0.25 eV. nT1 represents an integer of 0 to 5, nT2 represents an integer of 1 to 10, ArT1 represents a substituted amino group or a monovalent hetero ring group, LT1 represents an alkylene group, and ArT2 represents a hetero ring group.
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公开(公告)号：US20190341560A1
公开(公告)日：2019-11-07
申请号：US16349516
申请日：2017-11-14
摘要： A light emitting device containing an anode, a cathode, and a light emitting layer provided between the anode and the cathode is described. The light emitting layer contains a metal complex represented by formula (1).
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公开(公告)号：US20190185500A1
公开(公告)日：2019-06-20
申请号：US16088853
申请日：2017-03-30
发明人： Mayu YOSHIOKA , Taichi ABE , Toshiaki SASADA , Kohei ASADA , Nobuhiko AKINO
CPC分类号： C07F15/0086 , C07F15/00 , C07F15/0033 , C09K11/06 , H01L51/0085 , H01L51/0087 , H01L51/50 , H01L51/5012 , H01L51/5056 , H01L51/5072 , H01L51/5092
摘要： A metal complex represented by formula (1) is provided. In formula (1), X represents a nitrogen atom or a group represented by ═C(RX)—; R1 represents an alkyl group having 4 or more carbon atoms; R2 represents an alkyl, cycloalkyl, alkoxy, cycloalkoxy, aryl, aryloxy, monovalent heterocyclic, or substituted amino group or a halogen atom; rings A and B each independently represent an aromatic hydrocarbon ring or an aromatic heterocyclic ring; M represents a rhodium, palladium, iridium, or platinum atom; n1 represents an integer of 1 or more, n2 represents an integer of 0 or more, and n1+n2 is 2 or 3; A1-G1-A2 represents an anionic bidentate ligand; A1 and A2 each independently represent a carbon atom, an oxygen atom, or a nitrogen atom; and G1 represents a single bond or an atomic group constituting a bidentate ligand together with A1 and A2.
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公开(公告)号：US20190036046A1
公开(公告)日：2019-01-31
申请号：US16072243
申请日：2017-01-24
发明人： Toshiaki SASADA , Taichi ABE , Tomoyasu YOSHIDA , Takakazu SAITO
摘要： A composition is provided in which a phosphorescent compound represented by formula (1) and a host material are blended with each other. The amount of chlorine atoms contained as impurities in the phosphorescent compound is 3.5 ppm by mass or less with respect to the total amount of solid contents blended in the composition In Formula (1), M1 represents an iridium atom; n1 represents an integer of 1 or more, n2 represents an integer of 0 or more, n1+n2 is 2 or 3; E1 and E2 represent a carbon atom or a nitrogen atom; R1 ring represents a 5-membered aromatic heterocyclic ring and R2 ring represents an aromatic hydrocarbon ring; A1-G1-A2 represents an anionic bidentate ligand; A1 and A2 represent a nitrogen atom; and G1 represents a single bond.
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