Patents by Inventor Masato Nakamura
Masato Nakamura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20230296849Abstract: A ferrule includes a holding part, a first surface and a second surface. The holding part includes a first holding recess including the first surface and a third surface facing the first surface, a first wall, at least one through hole that is open at the third surface and a fourth surface, the fourth surface being located on a side on which the plurality of optical transmission members is inserted, and a plurality of first grooves disposed at the first holding recess along an extending direction of the plurality of optical transmission members, the plurality of optical transmission members inserted to the at least one through hole is respectively disposed at the plurality of first grooves.Type: ApplicationFiled: March 10, 2023Publication date: September 21, 2023Inventors: Masato NAKAMURA, Yuto KUJIRAI, Ayano HINATA
-
Patent number: 11765972Abstract: A compound represented by the following formula (1), wherein X1 is O or S, and two or more of Y1, Y2 and Y3 are N, provided that the case where one or both of —Ar1-Ar2 and —Ar3-Ar4 is a p-terphenyl-3-yl group is excluded.Type: GrantFiled: February 20, 2019Date of Patent: September 19, 2023Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Yoshinao Shirasaki, Tetsuya Masuda, Takushi Shiomi, Masatoshi Saito, Kei Yoshida, Masato Nakamura
-
Publication number: 20230240133Abstract: An organic electroluminescence device includes: a first emitting layer including a first host material, a first organic material, and a first dopant material; and a second emitting layer including a second host material and a second dopant material, in which the first host material, the first organic material, and the second host material are different compounds in structure and satisfy Numerical Formula 1 and Numerical Formula 2. Numerical Formula 1: T1(H1)>T1(H3), Numerical Formula 2: T1(H2)>T1(H3) (In Numerical Formula 1 and Numerical Formula 2, T1(H1), T1(H2), T1(H3) are triplet energies of the first host material, the first organic material, and the second host material, respectively.Type: ApplicationFiled: June 18, 2021Publication date: July 27, 2023Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Masato NAKAMURA, Tetsuya MASUDA, Satomi TASAKI, Hiroaki TOYOSHIMA, Takeshi IKEDA, Kazuma MASE
-
Publication number: 20230171977Abstract: An organic EL device includes a first emitting layer and a second emitting layer. The first emitting layer contains a first host material and a first dopant material. The second emitting layer contains a second host material and a second dopant material. The first host material and the second host material are different from each other. The first dopant material is a compound having a maximum peak wavelength of 500 nm or less. The second dopant material is a compound having a maximum peak wavelength of 500 nm or less. The first dopant material and the second dopant material are different from each other. A triplet energy T1(H1) of the first host material and a triplet energy T1(H2) of the second host material satisfy a relationship of a numerical formula (Numerical Formula 1), T1(H1)>T1(H2) ??(Numerical Formula 1).Type: ApplicationFiled: April 13, 2021Publication date: June 1, 2023Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Satomi TASAKI, Tetsuya MASUDA, Hiroaki TOYOSHIMA, Masato NAKAMURA
-
Publication number: 20230167072Abstract: A compound that further improves the capability of an organic electroluminescent device, an organic electroluminescent device having a further improved device capability, and an electronic device including the organic electroluminescent device are provided. A compound represented by the following formula (1): wherein the symbols in the formula (1) are defined in the description, an organic electroluminescent device including the compound, and an electronic device including the organic electroluminescent device.Type: ApplicationFiled: October 27, 2022Publication date: June 1, 2023Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Kei YOSHIDA, Masatoshi SAITO, Masato NAKAMURA, Sayaka MIZUTANI, Masato MITANI, Yoshinori AOYAMA, Ryota TAKAHASHI
-
Publication number: 20230127629Abstract: An organic electroluminescent device includes a cathode, an anode, and organic layers intervening between the cathode and the anode, where the organic layers include a light emitting layer and an electron transporting layer, where the electron transporting layer contains a compound A represented by formula (1), and the light emitting layer contains a host material B represented by formula (10):Type: ApplicationFiled: February 4, 2021Publication date: April 27, 2023Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Kei YOSHIDA, Masatoshi SAITO, Masato NAKAMURA, Tetsuya MASUDA
-
Publication number: 20230126868Abstract: An organic electroluminescence device includes: an emitting layer between an anode and a cathode; and a first layer between the cathode and the emitting layer, in which the first layer has a thickness of 50 nm or more, the first layer contains a compound represented by a formula (1) below, and the first layer contains no metal doping material. In the formula (100), A is a substituted or unsubstituted fused aryl group having 13 to 50 ring carbon atoms, or a substituted or unsubstituted fused heterocyclic group having 14 to 50 ring atoms.Type: ApplicationFiled: February 22, 2021Publication date: April 27, 2023Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Emiko KAMBE, Masatoshi SAITO, Masato NAKAMURA
-
Publication number: 20230124891Abstract: A compound represented by the following formula (1) and having a molecular weight of 650 or more: wherein Cz, n, Y1, Y2, Ar1, Ar2, L1, L2, L3, L4, R1, R2, R3, R4, R5, and R6 are as defined in the description, and an organic electroluminescent device which contains the compound.Type: ApplicationFiled: February 4, 2021Publication date: April 20, 2023Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Kei YOSHIDA, Masatoshi SAITO, Masato NAKAMURA, Tetsuya MASUDA
-
Publication number: 20230123637Abstract: An organic EL device includes: an anode; a cathode; an anode side emitting unit; a cathode side emitting unit; a charge generating unit; a first organic layer having a thickness of 40 nm or less; and a second organic layer, in which the anode side emitting unit includes a first emitting layer which is provided close to the anode, a difference between an ionization potential Ip(H1) of a first host material in the first emitting layer and an ionization potential Ip(EBL) of a first organic material in the first organic layer satisfies a relationship of a numerical formula (Numerical Formula A1) below, Ip(H1)?Ip(EBL)?0.4 eV??(Numerical Formula A1).Type: ApplicationFiled: August 11, 2022Publication date: April 20, 2023Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Masato NAKAMURA, Emiko KAMBE
-
Publication number: 20230099714Abstract: According to one embodiment, a display device includes first semiconductor layers crossing a first scanning line in a non-display area, the first semiconductor layers being a in number, second semiconductor layers crossing a second scanning line in the non-display area, the second semiconductor layers being b in number, and an insulating film disposed between the first and second semiconductor layers and the first and second scanning lines, wherein a and b are integers greater than or equal to 2, and a is different from b, and the first and second semiconductor layers are both entirely covered with the insulating film.Type: ApplicationFiled: December 6, 2022Publication date: March 30, 2023Applicant: Japan Display Inc.Inventor: Masato NAKAMURA
-
Publication number: 20230074352Abstract: Provide is a highly reliable semiconductor device in which stress generated in a semiconductor chip is reduced and an increase in thermal resistance is suppressed. The semiconductor device includes: a semiconductor chip including a first main electrode on one surface thereof and a second main electrode and a gate electrode on the other surface thereof; a first electrode connected to the one surface of the semiconductor chip via a first bonding material; and a second electrode connected to the other surface of the semiconductor chip via a second bonding material. The first electrode is a plate-shaped electrode and has a groove in a region overlapping with the semiconductor chip. The groove penetrates in a thickness direction of the first electrode and reaches an end portion of the first electrode when viewed in a plan view.Type: ApplicationFiled: July 27, 2022Publication date: March 9, 2023Applicant: Hitachi Power Semiconductor Device, Ltd.Inventors: Naoki TAKEDA, Hisashi TANIE, Kisho ASHIDA, Yu HARUBEPPU, Tomohiro ONDA, Masato NAKAMURA
-
Patent number: 11594383Abstract: A circuit interrupter includes: a first fixed terminal including a first fixed contact; a movable contactor which is formed as a separate part from the first fixed terminal and includes a first movable contact; a holding unit configured to hold the movable contactor so that the first movable contact is connected to the first fixed contact; and a squib configured to generate gas by combustion. In the circuit interrupter, pressure of the gas generated by the squib causes movement of the movable contactor in a direction away from the first fixed terminal so that the first movable contact is separated from the first fixed contact.Type: GrantFiled: March 5, 2019Date of Patent: February 28, 2023Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yoshihisa Fukuda, Shinya Kimoto, Kenji Kanematsu, Kazuhisa Kinoshita, Masato Nakamura
-
Publication number: 20230047894Abstract: A compound represented by the following formula (A1) (X1 is O or S; two or more of Y1, Y2, and Y3 are N; and Ar1 is an aryl group including 6 to 50 ring carbon atoms, comprising a benzene ring having at least substituent Ar2 at the ortho-position; Ar2 is an aryl group; and Ar3 is a predetermined group).Type: ApplicationFiled: December 6, 2019Publication date: February 16, 2023Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Yoshinao SHIRASAKI, Masatoshi SAITO, Kei YOSHIDA, Tetsuya MASUDA, Masato NAKAMURA, Tomokatsu KUSHIDA
-
Patent number: 11575087Abstract: An organic electroluminescence device includes: an emitting region provided between a cathode and an anode; and a hole transporting zone provided between the anode and the emitting region, in which the hole transporting zone includes at least a first anode side organic layer and a second anode side organic layer, the first anode side organic layer is in direct contact with the second anode side organic layer, a total film thickness of the hole transporting zone is in a range from 20 nm to 80 nm, the first anode side organic layer contains no compound contained in the second anode side organic layer, the first anode side organic layer contains a first organic material and a second organic material, the first organic material is different from the second organic material, and a content of the first organic material in the first anode side organic layer is less than 50 mass %.Type: GrantFiled: October 26, 2021Date of Patent: February 7, 2023Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Hiroaki Toyoshima, Kazuki Nishimura, Emiko Kambe, Masato Nakamura, Tetsuya Masuda, Yusuke Takahashi
-
Publication number: 20230036664Abstract: An organic electroluminescence device includes: an emitting region provided between a cathode and an anode; and a hole transporting zone provided between the anode and the emitting region, in which the hole transporting zone includes at least a first anode side organic layer and a second anode side organic layer, the first anode side organic layer is in direct contact with the second anode side organic layer, a total film thickness of the hole transporting zone is in a range from 20 nm to 80 nm, the first anode side organic layer contains no compound contained in the second anode side organic layer, the first anode side organic layer contains a first organic material and a second organic material, the first organic material is different from the second organic material, and a content of the first organic material in the first anode side organic layer is less than 50 mass %.Type: ApplicationFiled: August 25, 2022Publication date: February 2, 2023Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Hiroaki TOYOSHIMA, Kazuki NISHIMURA, Emiko KAMBE, Masato NAKAMURA, Tetsuya MASUDA, Yusuke TAKAHASHI
-
Publication number: 20230008873Abstract: A mixture contains a first compound represented by a formula (10) and a second compound represented by a formula (20), and the first compound and the second compound have structures different from each other. In the formula (10) and the formula (20), L12 is a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms or the like; Ar12 is a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms; L11, L21, and L22 are each independently a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or the like; Ar11, Ar21, and Ar22 are each independently a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms; and R11 to R18 and R21 to R28 are each independently a hydrogen atom or a substituent.Type: ApplicationFiled: May 28, 2021Publication date: January 12, 2023Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Masato NAKAMURA, Yuki NAKANO, Hiroaki ITOI
-
Patent number: 11552110Abstract: According to one embodiment, a display device includes first semiconductor layers crossing a first scanning line in a non-display area, the first semiconductor layers being a in number, second semiconductor layers crossing a second scanning line in the non-display area, the second semiconductor layers being b in number, and an insulating film disposed between the first and second semiconductor layers and the first and second scanning lines, wherein a and b are integers greater than or equal to 2, and a is different from b, and the first and second semiconductor layers are both entirely covered with the insulating film.Type: GrantFiled: April 2, 2021Date of Patent: January 10, 2023Assignee: Japan Display Inc.Inventor: Masato Nakamura
-
Publication number: 20220416171Abstract: An organic electroluminescence device includes an anode, a cathode, a first emitting layer and a second emitting layer that are interposed between the anode and the cathode and are in a direct contact with each other, and a first electron transporting layer between the cathode and the first emitting layer and the second emitting layer being in a direct contact with each other. The first emitting layer contains a first compound represented by a formula (1) as a first host material, the first compound having at least one group represented by a formula (11). The second emitting layer contains a second compound represented by a formula (2) as a second host material. The first electron transporting layer contains a third compound represented by a formula (3).Type: ApplicationFiled: July 1, 2022Publication date: December 29, 2022Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Satomi TASAKI, Kazuki NISHIMURA, Masatoshi SAITO, Tetsuya MASUDA, Yuki NAKANO, Masato NAKAMURA
-
Publication number: 20220416208Abstract: An organic-EL-display device includes a blue-emitting-organic-EL-device and a red-emitting-organic-EL-device as pixels, in which each of the blue-emitting-organic and the red-emitting-organic-EL-device includes a light-reflection layer, transparent electrode, hole transporting zone, emitting layer, electron transporting zone and semitransmissive electrode in this order, the blue-emitting-organic-EL-device has a blue-emitting layer containing a fluorescent-compound FLB, the red-emitting-organic-EL-device has a red-emitting layer containing a delayed fluorescent compound DFR, the hole transporting zone is provided at a constant film-thickness in a shared manner across the blue-emitting and red-emitting organic EL devices, the red-emitting-organic-EL-device has a resonator structure whose order of interference is first-order between the light reflection layer and the semitransmissive electrode, a film-thickness of the red-emitting layer is less than 50 nm, and a sum of film-thicknesses of the transparent electroType: ApplicationFiled: June 17, 2020Publication date: December 29, 2022Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Emiko KAMBE, Shota SAWANO, Masato NAKAMURA, Masatoshi SAITO
-
Publication number: 20220390801Abstract: According to one embodiment, a liquid crystal display device includes a first area, second area, liquid crystal layer, and a plurality of pixels. Each subpixel includes an opening area including a first opening area and a second opening area. The pixels include a first pixel positioned in the first area and a second pixel positioned over a boundary of the first area and the second area. The opening area of the second pixel is smaller than the opening area of the first pixel when opening areas of subpixels of same color are compared. An each imaginary line showing the boundary of the first opening area and the second opening area is a same straight line.Type: ApplicationFiled: August 16, 2022Publication date: December 8, 2022Applicant: Japan Display Inc.Inventors: Masato NAKAMURA, Daichi HOSOKAWA, Yuki KURAMOTO, Hideyuki TAKAHASHI