Patents by Inventor Takanobu Takayama
Takanobu Takayama 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).
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Publication number: 20240112932Abstract: According to one embodiment, a manufacturing device of a display device includes a conveyance mechanism for conveying a processing substrate in a first direction, and first, second, third and fourth evaporation portions arranged in order in the first direction. The first evaporation portion includes a plurality of evaporation chambers for forming an organic layer. The second evaporation portion includes an evaporation chamber for forming an upper electrode. The third evaporation portion includes an evaporation chamber for forming a first transparent layer. The fourth evaporation portion includes an evaporation chamber for forming a second transparent layer having a refractive index less than a refractive index of the first transparent layer on the first transparent layer.Type: ApplicationFiled: September 28, 2023Publication date: April 4, 2024Applicant: Japan Display Inc.Inventors: Takanobu TAKENAKA, Hirofumi MIZUKOSHI, Masaru TAKAYAMA, Yuki HAMADA
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Publication number: 20240099110Abstract: According to one embodiment, a manufacturing method of a display device includes preparing a processing substrate by forming a lower electrode, a rib and a partition, forming an organic layer on the lower electrode, forming an upper electrode on the organic layer, forming a first transparent layer on the upper electrode by depositing a first organic material, forming a second transparent layer on the first transparent layer by depositing a second organic material, and depositing the second organic material on each of a plurality of crystal oscillators included in a film thickness measurement device by emitting the second organic material from first and second nozzles of an evaporation source before forming the second transparent layer.Type: ApplicationFiled: September 20, 2023Publication date: March 21, 2024Applicant: Japan Display Inc.Inventors: Hirofumi MIZUKOSHI, Takanobu TAKENAKA, Masaru TAKAYAMA, Kaichi FUKUDA
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Patent number: 6846582Abstract: A magnetic recording medium 100 comprises, on a substrate 1, a soft magnetic layer 3, a seed layer 5, and a recording layer 6 having an artificial lattice structure. The seed layer 5 is formed of Pd and one selected from the group consisting of Si, B, C, and Zr. Accordingly, the magnetic exchange coupling force of the recording layer 6 in the in-plane direction can be weakened. Minute recording magnetic domains can be formed in the recording layer 6, and the magnetization transition area is distinct as well. Thus, the medium noise is reduced. That is, reproduction can be performed with a low medium noise even when information is recorded at a high density. A magnetic storage apparatus, which is provided with the magnetic recording medium as described above, can achieve an areal recording density of 150 Gigabits/square inch.Type: GrantFiled: November 13, 2002Date of Patent: January 25, 2005Assignee: Hitachi Maxell, Ltd.Inventors: Tsuyoshi Onuma, Akira Yano, Satoshi Matsunuma, Takanobu Takayama
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Patent number: 6815098Abstract: A magnetic recording medium comprises, on a substrate, a soft magnetic layer, a first seed layer, a second seed layer, and a recording layer having an artificial lattice structure. The first seed layer contains oxide of Fe. The second seed layer contains one of Pd and Pt, Si, and N. The magnetic exchange coupling force in the in-plane direction of the recording layer is weakened by the first seed layer and the second seed layer. Accordingly, minute recording magnetic domains can be formed in the recording layer, and the magnetization transition area is distinct as well. Even when information is recorded at a high density, the information can be reproduced with low noise. A magnetic storage apparatus, which is provided with such a magnetic recording medium, makes it possible to achieve an areal recording density of 150 gigabits/square inch.Type: GrantFiled: April 11, 2003Date of Patent: November 9, 2004Assignee: Hitachi Maxell, Ltd.Inventors: Satoshi Matsunuma, Akira Yano, Tsuyoshi Onuma, Takanobu Takayama, Harumi Hieida, Kouichirou Wakabayashi
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Publication number: 20030162057Abstract: A magnetic recording medium comprises, on a substrate, a soft magnetic layer, a first seed layer, a second seed layer, and a recording layer having an artificial lattice structure. The first seed layer contains oxide of Fe. The second seed layer contains one of Pd and Pt, Si, and N. The magnetic exchange coupling force in the in-plane direction of the recording layer is weakened by the first seed layer and the second seed layer. Accordingly, minute recording magnetic domains can be formed in the recording layer, and the magnetization transition area is distinct as well. Even when information is recorded at a high density, the information can be reproduced with low noise. A magnetic storage apparatus, which is provided with such a magnetic recording medium, makes it possible to achieve an areal recording density of 150 gigabits/square inch.Type: ApplicationFiled: April 11, 2003Publication date: August 28, 2003Applicant: HITACHI MAXELL, LTD.Inventors: Satoshi Matsunuma, Akira Yano, Tsuyoshi Onuma, Takanobu Takayama, Harumi Hieida, Kouichirou Wakabayashi
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Patent number: 6602621Abstract: A magnetic recording medium comprises, on a substrate, a soft magnetic layer, a first seed layer, a second seed layer, and a recording layer having an artificial lattice structure. The first seed layer contains oxide of Fe. The second seed layer contains one of Pd and Pt, Si, and N. The magnetic exchange coupling force in the in-plane direction of the recording layer is weakened by the first seed layer and the second seed layer. Accordingly, minute recording magnetic domains can be formed in the recording layer, and the magnetization transition area is distinct as well. Even when information is recorded at a high density, the information can be reproduced with low noise. A magnetic storage apparatus, which is provided with such a magnetic recording medium, makes it possible to achieve an areal recording density of 150 gigabits/square inch.Type: GrantFiled: December 27, 2001Date of Patent: August 5, 2003Assignee: Hitachi Maxell, Ltd.Inventors: Satoshi Matsunuma, Akira Yano, Tsuyoshi Onuma, Takanobu Takayama, Harumi Hieida, Kouichirou Wakabayashi
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Publication number: 20030104252Abstract: A magnetic recording medium 100 comprises, on a substrate 1, a soft magnetic layer 3, a seed layer 5, and a recording layer 6 having an artificial lattice structure. The seed layer 5 is formed of Pd and one selected from the group consisting of Si, B, C, and Zr. Accordingly, the magnetic exchange coupling force of the recording layer 6 in the in-plane direction can be weakened. Minute recording magnetic domains can be formed in the recording layer 6, and the magnetization transition area is distinct as well. Thus, the medium noise is reduced. That is, reproduction can be performed with a low medium noise even when information is recorded at a high density. A magnetic storage apparatus, which is provided with the magnetic recording medium as described above, can achieve an areal recording density of 150 Gigabits/square inch.Type: ApplicationFiled: November 13, 2002Publication date: June 5, 2003Applicant: HITACHI MAXELL, LTD.Inventors: Tsuyoshi Onuma, Akira Yano, Satoshi Matsunuma, Takanobu Takayama
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Publication number: 20020122959Abstract: A magnetic recording medium comprises, on a substrate, a soft magnetic layer, a first seed layer, a second seed layer, and a recording layer having an artificial lattice structure. The first seed layer contains oxide of Fe. The second seed layer contains one of Pd and Pt, Si, and N. The magnetic exchange coupling force in the in-plane direction of the recording layer is weakened by the first seed layer and the second seed layer. Accordingly, minute recording magnetic domains can be formed in the recording layer, and the magnetization transition area is distinct as well. Even when information is recorded at a high density, the information can be reproduced with low noise. A magnetic storage apparatus, which is provided with such a magnetic recording medium, makes it possible to achieve an areal recording density of 150 gigabits/square inch.Type: ApplicationFiled: December 27, 2001Publication date: September 5, 2002Applicant: HITACHI MAXELL, LTD.Inventors: Satoshi Matsunuma, Akira Yano, Tsuyoshi Onuma, Takanobu Takayama, Harumi Hieida, Kouichirou Wakabayashi
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Patent number: 6349008Abstract: A magnetic recording medium wherein, when the axis of easy magnetization of the magnetic recording medium for magnetically recording information by means of a magnetic head is projected onto a surface of the magnetic recording medium, the axis projected onto the surface of the magnetic recording medium exists so as to be unidirectionally inclined with respect to the direction of a track on which information is to be recorded, whereby, by using the magnetic recording medium, there can be provided a magnetic head and a magnetic read-write apparatus greatly improved in longitudinal recording density.Type: GrantFiled: October 21, 1998Date of Patent: February 19, 2002Assignee: Hitachi, Ltd.Inventors: Takanobu Takayama, Kiwamu Tanahashi, Kazuetsu Yoshida, Mikio Suzuki, Yoshiyuki Hirayama, Masaaki Futamoto, Yohji Maruyama
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Patent number: 5875082Abstract: A magnetic recording medium wherein, when the axis of easy magnetization of the magnetic recording medium for magnetically recording information by means of a magnetic head is projected onto a surface of the magnetic recording medium, the axis projected onto the surface of the magnetic recording medium exists so as to be unidirectionally inclined with respect to the direction of a track on which information is to be recorded, whereby, by using the magnetic recording medium, there can be provided a magnetic head and a magnetic read-write apparatus greatly improved in longitudinal recording density.Type: GrantFiled: February 4, 1997Date of Patent: February 23, 1999Assignee: Hitachi, Ltd.Inventors: Takanobu Takayama, Kiwamu Tanahashi, Kazuetsu Yoshida, Mikio Suzuki, Yoshiyuki Hirayama, Masaaki Futamoto, Yohji Maruyama
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Patent number: 5738927Abstract: A film 12 with perpendicular magnetic anisotropy and a protective film 13 are formed over a single-crystal substrate 11. This substrate is made of either a single crystal having a hexagonal crystal structure and a plane (0001) in parallel with the substrate plane or a single crystal having a cubic crystal structure and a plane (111) in parallel with the substrate plane, and the film is epitaxially grown such that its easy axis of magnetization is perpendicular to the substrate plane. As a result, the film can have its perpendicular orientation and perpendicular magnetic anisotropy improved to effect a perpendicular magnetic recording of high density thereby to provide the perpendicular magnetic recording media, of which the film has a remarkably enhanced orientation.Type: GrantFiled: June 2, 1995Date of Patent: April 14, 1998Assignee: Hitachi, Ltd.Inventors: Atsushi Nakamura, Masaaki Futamoto, Yoshiyuki Hirayama, Mikio Suzuki, Yukio Honda, Takanobu Takayama
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Patent number: 5244751Abstract: There is disclosed a perpendicular magnetic recording medium having a magnetic layer comprising magnetic metal corpuscles and their oxide formed on a nonmagnetic substrate, and having perpendicular magnetic recording read-write characteristics improved by dispersing the above described magnetic metal corpuscles in the oxide crystal having a NaCl type crystal structure so that the magnetic metal corpuscles may have an isotropic structure instead of a columnar structure. There are also disclosed a method for fabricating such a perpendicular magnetic recording medium and a read-write machine using such a perpendicular magnetic recording medium.Type: GrantFiled: March 9, 1989Date of Patent: September 14, 1993Assignees: Hitachi, Ltd., Hitachi Maxell, Ltd.Inventors: Takanobu Takayama, Kazuetsu Yoshida
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Patent number: 4876144Abstract: It is disclosed that a Heusler alloy thin film having a structure of a single crystal is prepared by forming a Heusler alloy thin film having a magneto-optical effect and an MgAgAs type crystalline structure on a single crystal substrate, whereby magnetization is easily effected in a low applied magnetic field. This single crystal thin film is suitable as a material of a head for writing magnetically and reading out optically.Type: GrantFiled: October 22, 1987Date of Patent: October 24, 1989Assignee: Hitachi, Ltd.Inventors: Kenzo Susa, Kazumasa Takagi, Toshio Kobayashi, Takanobu Takayama, Norio Ohta