公开(公告)号：US20190319210A1

公开(公告)日：2019-10-17

申请号：US16344541

申请日：2017-11-22

Applicant: Konica Minolta, Inc.

Inventor： Yuta NAKAMURA ,  Satoru INOUE ,  Taketo NAMIKAWA ,  Yasuo MIYATA ,  Kenichi TABATA ,  Hiromoto II

IPC: H01L51/50 ,  C09K11/06 ,  H01L51/00

Abstract: The present invention addresses the problem of providing: an organic electroluminescent element which is capable of emitting light with high luminous efficiency, while having a long service life; and a composition for organic materials. An organic electroluminescent element according to the present invention comprises a positive electrode, a negative electrode and one or more organic functional layers arranged between the positive electrode and the negative electrode, and is characterized in that: the organic functional layers contain a phosphorescent metal complex and a fluorescent compound; the phosphorescent metal complex is a compound having a structure that is represented by a specific general formula; and the phosphorescent metal complex is a core-shell type dopant that satisfies a specific formula.

公开(公告)号：US20190280236A1

公开(公告)日：2019-09-12

申请号：US16347476

申请日：2017-11-22

Applicant: Konica Minolta, Inc.

Inventor： Kenichi TABATA ,  Yuta NAKAMURA ,  Taketo NAMIKAWA ,  Satoru INOUE ,  Yasuo MIYATA ,  Hiromoto II

IPC: H01L51/50 ,  H01L51/00 ,  H01L51/56 ,  H01L51/52

Abstract: A luminescent film includes a host compound, a blue phosphorescent compound, and a blue fluorescent compound, in which an emission spectrum of the blue phosphorescent compound and an absorption spectrum of the blue fluorescent compound have portions overlapping with each other; shortest wavelength-side maximum emission wavelengths of the blue phosphorescent compound (abbreviated as “BPM” in the expression) and the blue fluorescent compound (abbreviated as “BFM” in the expression) satisfy the following expression (1): λBFM≥λBPM: expression (1) in which λBFM represents the shortest wavelength-side maximum emission wavelength of the blue fluorescent compound and λBPM represents the shortest wavelength-side maximum emission wavelength of the blue phosphorescent compound; and light emission derived from the blue fluorescent compound is detected.

公开(公告)号：US20230222298A1

公开(公告)日：2023-07-13

申请号：US18000056

申请日：2021-04-02

Applicant: Konica Minolta, Inc. ,  GIT JAPAN INCORPORATED

Inventor： Taketo NAMIKAWA ,  Hirokazu NAKAYAMA ,  Norio FUJITA

IPC: G06K7/08 ,  G06K19/067 ,  H04B1/59

CPC classification number: G06K7/08 ,  G06K19/067 ,  H04B1/59

Abstract: A reader includes: a transmission device that repeatedly transmits, at a cycle corresponding to the code length of a prescribed code string, an electromagnetic wave that is phase-adjusted with the prescribed code string; a reception device that receives the reflected wave from the object to be identified, cyclically overlaps a reception signal relating to the reflected wave at the cycle of the code length, and calculates the correlation value of the overlapped result and the prescribed code string; and a control device that controls the transmission device and varies the transmission frequency of the electromagnetic wave in a steplike manner to perform a frequency sweep within a prescribed frequency band, controls the reception device, causing the reception device to calculate the correlation value for each transmission frequency, and specifies the attributes of the object to be identified on the basis of the correlation value for each transmission frequency.

公开(公告)号：US20200044164A1

公开(公告)日：2020-02-06

申请号：US16582774

申请日：2019-09-25

Applicant: Konica Minolta, Inc.

Inventor： Yasuo MIYATA ,  Taketo NAMIKAWA ,  Hiroshi KITA

IPC: H01L51/00 ,  C07D413/14 ,  C07D219/02 ,  C07D241/48 ,  C09K11/06 ,  C07D401/12 ,  C07F5/02 ,  C07F7/08 ,  C07F7/10 ,  C07D401/10 ,  C07D265/38 ,  C07D487/04 ,  C07D403/12 ,  C07D241/46 ,  C07D409/10 ,  C07D417/10 ,  H05B33/20 ,  C07D403/10 ,  C07D279/22 ,  C07D209/86 ,  C07D307/91 ,  C07D333/76 ,  H01L51/50

Abstract: An object of the present invention is to provide an organic electroluminescent element containing an organic layer interposed between an anode and a cathode, the organic layer containing at least one light emitting layer, wherein the at least one light emitting layer contains a π-conjugated compound having an electron donor portion and an electron acceptor portion in the molecule; the π-conjugated compound has a direction vector from an atom having a HOMO orbital in the electron donor portion to an electron cloud of the HOMO orbital, and a direction vector from an atom having a LUMO orbital in the electron acceptor portion to an electron cloud of the LUMO orbital, and the two direction vectors form an angle θ in the range of 90 to 180 degrees; and the π-conjugated compound has a plurality of the electron donor portions or a plurality of the electron acceptor portions.

公开(公告)号：US20180170914A1

公开(公告)日：2018-06-21

申请号：US15572412

申请日：2016-04-27

Applicant: Konica Minolta, Inc.

Inventor： Yasuo MIYATA ,  Taketo NAMIKAWA ,  Takayuki IIJIMA ,  Ryutaro SUGAWARA ,  Tetsuya YAMADA ,  Takatugu SUZUKI

IPC: C07D403/14 ,  C07D401/14 ,  C07D251/24 ,  C09K11/06 ,  H01L51/00 ,  H01L51/50

CPC classification number: C07D403/14 ,  C07C255/51 ,  C07D209/86 ,  C07D219/02 ,  C07D241/24 ,  C07D251/24 ,  C07D265/38 ,  C07D401/14 ,  C07D405/14 ,  C07D409/14 ,  C07D413/14 ,  C07D417/10 ,  C07D417/14 ,  C07D471/14 ,  C07D487/04 ,  C07D491/048 ,  C07D495/04 ,  C07D519/00 ,  C09K11/06 ,  C09K2211/1029 ,  C09K2211/1059 ,  H01L51/0067 ,  H01L51/0071 ,  H01L51/0072 ,  H01L51/5012 ,  H01L51/5016

Abstract: In order to provide a novel π-conjugated compound capable of increasing the light-emission efficiency of an organic electroluminescence element, for example, this π-conjugated compound has a structure indicated by general formula (1). (In general formula (1): Z1-Z6 each independently indicate a hydrogen atom, a deuterium atom, an electron-donating group D, or an electron-withdrawing group A; at least out of two among Z1-Z6 is an electron-donating group D and the other is an electron-withdrawing group A; and at least one ortho position combination Z1 and Z2, Z2 and Z3, Z3 and Z4, Z4 and Z5, Z5 and Z6, or Z6 and Z1 among Z1-Z6 is one combination out of an electron-donating group D and an electron-donating group D, an electron-withdrawing group A and an electron-withdrawing group A, or an electron-donating group D and an electron-withdrawing group A.)

公开(公告)号：US20200006687A1

公开(公告)日：2020-01-02

申请号：US16483119

申请日：2018-02-21

Applicant: Konica Minolta, Inc.

Inventor： Satoru INOUE ,  Taketo NAMIKAWA ,  Kenichi TABATA ,  Yuta NAKAMURA

IPC: H01L51/50

Abstract: An organic electroluminescent element including a light emitting layer containing a first host compound, a second host compound, and a phosphorescent metal complex disposed between a cathode and an anode, wherein the first and the second host compounds satisfy the requirements that: in comparison of emission bands of maximum emission intensity in fluorescence emission spectra of single films of the first host compound alone, the second host compound alone, and a mixture of the first and the second host compounds, a difference between a wavelength of a fluorescence emission end located on a longer wavelength side among fluorescence emission ends of the first host compound and the second host compound, and a wavelength of a fluorescence emission end of the mixture is −3 to 3 nm; and a LUMO energy level and a HOMO energy level of the first host compound and the second host compound satisfy specific relationships.

公开(公告)号：US20170271597A1

公开(公告)日：2017-09-21

申请号：US15329851

申请日：2015-07-30

Applicant: Konica Minolta, Inc.

Inventor： Yasuo MIYATA ,  Taketo NAMIKAWA ,  Hiroshi KITA

IPC: H01L51/00 ,  C09K11/06 ,  C07D401/12 ,  C07D413/14 ,  C07F7/08 ,  C07D241/48 ,  C07D219/02 ,  C07F5/02

CPC classification number: H01L51/0072 ,  C07D209/86 ,  C07D219/02 ,  C07D241/46 ,  C07D241/48 ,  C07D265/38 ,  C07D279/22 ,  C07D307/91 ,  C07D333/76 ,  C07D401/10 ,  C07D401/12 ,  C07D403/10 ,  C07D403/12 ,  C07D409/10 ,  C07D413/14 ,  C07D417/10 ,  C07D487/04 ,  C07F5/02 ,  C07F5/027 ,  C07F7/0812 ,  C07F7/10 ,  C09K11/06 ,  C09K2211/1018 ,  C09K2211/1022 ,  H01L51/0067 ,  H01L51/0071 ,  H01L51/0074 ,  H01L51/008 ,  H01L51/0085 ,  H01L51/0094 ,  H01L51/5004 ,  H01L51/5016 ,  H01L51/5028 ,  H01L2251/5376 ,  H01L2251/552 ,  H05B33/20

Abstract: An object of the present invention is to provide an organic electroluminescent element containing an organic layer interposed between an anode and a cathode, the organic layer containing at least one light emitting layer, wherein the at least one light emitting layer contains a n-conjugated compound having an electron donor portion and an electron acceptor portion in the molecule; the n-conjugated compound has a direction vector from an atom having a HOMO orbital in the electron donor portion to an electron cloud of the HOMO orbital, and a direction vector from an atom having a LUMO orbital in the electron acceptor portion to an electron cloud of the LUMO orbital, and the two direction vectors form an angle θ in the range of 90 to 180 degrees; and the n-conjugated compound has a plurality of the electron donor portions or a plurality of the electron acceptor portions.