Patents by Inventor Hitoshi Nakayama

Hitoshi Nakayama 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: 20210119054
    Abstract: A semiconductor device having high on-state current and favorable reliability is provided. The semiconductor device includes a first insulator; a first oxide over the first insulator; a second oxide over the first oxide; a third oxide and a fourth oxide over the second oxide; a first conductor over the third oxide; a second conductor over the fourth oxide; a fifth oxide over the second oxide; a second insulator over the fifth oxide; and a third conductor positioned over the second insulator and overlapping with the second oxide. The fifth oxide is in contact with each of a side surface of the third oxide and a side surface of the fourth oxide. The conductivity of the third oxide is higher than the conductivity of the second oxide, and the conductivity of the fourth oxide is higher than the conductivity of the second oxide.
    Type: Application
    Filed: March 21, 2019
    Publication date: April 22, 2021
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei YAMAZAKI, Yuichi SATO, Hitoshi NAKAYAMA
  • Publication number: 20210103004
    Abstract: A power supply device which is used as a backup power supply, including a power supply side acquisition unit that acquires information related to a position of the power supply device.
    Type: Application
    Filed: March 29, 2018
    Publication date: April 8, 2021
    Inventors: Tsukasa NISHIMURA, Hitoshi NAKAYAMA
  • Patent number: 10967636
    Abstract: A head chip capable of suppressing the degradation of the reliability, and a liquid jet head and a liquid jet recording device using the head chip are provided. The head chip includes an actuator plate having a plurality of ejection channels respectively communicated with nozzle holes and electrodes disposed on inner walls of the respective ejection channels, a bonded plate to be bonded to the actuator plate, and having a liquid contact surface which liquid entered the ejection channels has contact with, an adhesive layer disposed between the bonded plate and the actuator plate, and adapted to bond the bonded plate and the actuator plate to each other, and a protective film adapted to cover continuously from inner walls of the respective ejection channels to at least a part of the liquid contact surface via an end surface of the adhesive layer exposed on the ejection channel side.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: April 6, 2021
    Assignee: SII PRINTEK INC.
    Inventor: Hitoshi Nakayama
  • Publication number: 20210020667
    Abstract: A semiconductor device including: a first insulator in which an opening is formed; a first conductor positioned in the opening; a first oxide over the first insulator; a second oxide over the first oxide; a third oxide and a fourth oxide over the second oxide; a second conductor over the third oxide and the first conductor; a third conductor over the fourth oxide; a fifth oxide over the second oxide; a second insulator over the fifth oxide; and a fourth conductor positioned over the second insulator and overlapping with the fifth oxide. The fifth oxide is in contact with each of a side surface of the third oxide and a side surface of the fourth oxide. The conductivity of the third oxide is higher than the conductivity of the second oxide. The second conductor is in contact with the top surface of the first conductor.
    Type: Application
    Filed: April 4, 2019
    Publication date: January 21, 2021
    Inventors: Shunpei YAMAZAKI, Yuichi SATO, Hitoshi NAKAYAMA
  • Patent number: 10807364
    Abstract: There are provided a head chip, a liquid jet head, and a liquid jet recording device capable of enhancing the reliability. The head chip according to an embodiment of the disclosure is a head chip adapted to jet liquid including an actuator plate having a plurality of ejection grooves arranged side by side along a first direction, and extending in a second direction crossing the first direction, a plurality of common electrodes formed on respective inner surfaces of the plurality of ejection grooves, and a commonalization interconnection adapted to electrically connect the plurality of common electrodes to each other, and a nozzle plate having a plurality of nozzle holes individually communicated with the plurality of ejection grooves.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: October 20, 2020
    Assignee: SII PRINTEK INC.
    Inventors: Daichi Nishikawa, Misaki Kobayashi, Tomoki Kameyama, Hitoshi Nakayama
  • Publication number: 20200180311
    Abstract: A head chip capable of suppressing the degradation of the reliability, and a liquid jet head and a liquid jet recording device using the head chip are provided. The head chip includes an actuator plate having a plurality of ejection channels respectively communicated with nozzle holes and electrodes disposed on inner walls of the respective ejection channels, a bonded plate to be bonded to the actuator plate, and having a liquid contact surface which liquid entered the ejection channels has contact with, an adhesive layer disposed between the bonded plate and the actuator plate, and adapted to bond the bonded plate and the actuator plate to each other, and a protective film adapted to cover continuously from inner walls of the respective ejection channels to at least a part of the liquid contact surface via an end surface of the adhesive layer exposed on the ejection channel side.
    Type: Application
    Filed: November 27, 2019
    Publication date: June 11, 2020
    Inventor: Hitoshi NAKAYAMA
  • Publication number: 20200147967
    Abstract: A liquid jet head chip capable of exerting a stable ejection performance is provided. The liquid jet head chip is provided with an actuator plate and an electrode. The actuator plate has an obverse surface, a reverse surface, and two or more ejection channels which penetrate the actuator plate in a thickness direction from the obverse surface toward the reverse surface, which are disposed so as to be adjacent to each other at intervals in a first direction perpendicular to the thickness direction, and which are disposed so as to extend in a second direction perpendicular to both of the thickness direction and the first direction.
    Type: Application
    Filed: November 6, 2019
    Publication date: May 14, 2020
    Inventors: Hitoshi NAKAYAMA, Yuji NAKAMURA, Yuki YAMAMURA, Mizuki KUDO
  • Patent number: 10513117
    Abstract: According to an embodiment, an ink jet head (liquid ejecting head) includes an actuator plate and a cover plate (see FIG. 8). As illustrated in FIG. 1, channel grooves for a discharge channel (ejection channel) and a non-discharge channel (non-ejection channel) in a Z-direction are formed on a front surface of the actuator plate, so as to be alternately arranged in an X-direction, by cutting with a dicing blade or the like. The discharge channel and the non-discharge channel are formed to have a groove width W of smaller than 70 ?m, in order to correspond to high density of nozzles. In the embodiment, the discharge channel and the non-discharge channel are formed to have a groove width of 55 ?m, 50 ?m, or 40 ?m, for example.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: December 24, 2019
    Assignee: SII PRINTEK INC.
    Inventors: Hitoshi Nakayama, Takeshi Sugiyama, Daichi Nishikawa, Eriko Maeda
  • Patent number: 10471716
    Abstract: According to an embodiment, a liquid ejecting head chip includes an actuator plate and an in-channel electrode. In the actuator plate, a plurality of channels are arranged at a distance in an X-direction. Each of the channels includes an extension portion and a raise-and-cut portion. The extension portion extends in a Z-direction. The raise-and-cut portion continues from the extension portion toward one side of the Z-direction and has a groove depth which is gradually reduced toward the one side of the Z-direction. The in-channel electrode is formed on an inner surface of each of the channels, with a plating film.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: November 12, 2019
    Assignee: SII PRINTEK INC.
    Inventor: Hitoshi Nakayama
  • Publication number: 20190299428
    Abstract: A robot includes an optical signal transmission apparatus that transmits optical signals. The optical signal transmission apparatus includes a light emitting device that emits light, a light receiving device that receives light and outputs a signal, and an amplifier circuit that amplifies the signal output from the light receiving device, wherein the amplifier circuit is placed between the light emitting device and the light receiving device. Further, a distance between the light receiving device and the amplifier circuit is smaller than a distance between the light emitting device and the amplifier circuit.
    Type: Application
    Filed: April 2, 2019
    Publication date: October 3, 2019
    Inventor: Hitoshi NAKAYAMA
  • Publication number: 20190143682
    Abstract: There are provided a head chip, a liquid jet head, and a liquid jet recording device capable of enhancing the reliability. The head chip according to an embodiment of the disclosure is a head chip adapted to jet liquid including an actuator plate having a plurality of ejection grooves arranged side by side along a first direction, and extending in a second direction crossing the first direction, a plurality of common electrodes formed on respective inner surfaces of the plurality of ejection grooves, and a commonalization interconnection adapted to electrically connect the plurality of common electrodes to each other, and a nozzle plate having a plurality of nozzle holes individually communicated with the plurality of ejection grooves.
    Type: Application
    Filed: November 12, 2018
    Publication date: May 16, 2019
    Inventors: Daichi NISHIKAWA, Misaki KOBAYASHI, Tomoki KAMEYAMA, Hitoshi NAKAYAMA
  • Patent number: 10279591
    Abstract: A discharge channel and a non-discharge channel are formed to have a similar shape, that is, to include extension portions and raise-and-cut portions continuing from end portions of both the extension portions, respectively. Then, imparting of a catalyst, washing of an unnecessary catalyst, plating, and the like are performed on a target surface, as a plating step. In an embodiment, an electrode clearance groove is formed after the plating step. Since channel grooves for the discharge channel and the non-discharge channel have a similar shape, it is possible to cause a water flow to uniformly flow in the channels when washing is performed, and thus to avoid an occurrence of a situation in which a lump is formed in the channel groove by plating.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: May 7, 2019
    Assignee: SII PRINTEK INC.
    Inventors: Hitoshi Nakayama, Takeshi Sugiyama, Daichi Nishikawa, Eriko Maeda
  • Patent number: 10195849
    Abstract: Channel grooves for a discharge channel and a non-discharge channel are formed in the surface of an actuator plate by cutting. The discharge channel includes an extension portion and a raise-and-cut portion, and the non-discharge channel also includes an extension portion and a raise-and-cut portion. In an embodiment, an electrode clearance groove is formed in advance by cutting with a dicing blade or the like. After the electrode clearance groove is formed, an electrode is formed by plating. Since plating is performed after the electrode clearance groove is formed, a clearance groove electrode is integrally formed with an AP-side common pad in the electrode clearance groove, and thus the clearance groove electrode and the AP-side common pad are short-circuited. Thus, an electrode separation portion is formed by cutting a short-circuited portion of the clearance groove electrode and the AP-side common pad through cutting or irradiation with laser.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: February 5, 2019
    Assignee: SII PRINTEK INC.
    Inventors: Hitoshi Nakayama, Takeshi Sugiyama, Daichi Nishikawa, Eriko Maeda
  • Publication number: 20180272714
    Abstract: A discharge channel and a non-discharge channel are formed to have a similar shape, that is, to include extension portions and raise-and-cut portions continuing from end portions of both the extension portions, respectively. Then, imparting of a catalyst, washing of an unnecessary catalyst, plating, and the like are performed on a target surface, as a plating step. In an embodiment, an electrode clearance groove is formed after the plating step. Since channel grooves for the discharge channel and the non-discharge channel have a similar shape, it is possible to cause a water flow to uniformly flow in the channels when washing is performed, and thus to avoid an occurrence of a situation in which a lump is formed in the channel groove by plating.
    Type: Application
    Filed: March 19, 2018
    Publication date: September 27, 2018
    Inventors: Hitoshi NAKAYAMA, Takeshi SUGIYAMA, Daichi NISHIKAWA, Eriko MAEDA
  • Publication number: 20180272712
    Abstract: Channel grooves for a discharge channel and a non-discharge channel are formed in the surface of an actuator plate by cutting. The discharge channel includes an extension portion and a raise-and-cut portion, and the non-discharge channel also includes an extension portion and a raise-and-cut portion. In an embodiment, an electrode clearance groove is formed in advance by cutting with a dicing blade or the like. After the electrode clearance groove is formed, an electrode is formed by plating. Since plating is performed after the electrode clearance groove is formed, a clearance groove electrode is integrally formed with an AP-side common pad in the electrode clearance groove, and thus the clearance groove electrode and the AP-side common pad are short-circuited. Thus, an electrode separation portion is formed by cutting a short-circuited portion of the clearance groove electrode and the AP-side common pad through cutting or irradiation with laser.
    Type: Application
    Filed: March 19, 2018
    Publication date: September 27, 2018
    Inventors: Hitoshi NAKAYAMA, Takeshi SUGIYAMA, Daichi NISHIKAWA, Eriko MAEDA
  • Publication number: 20180272711
    Abstract: According to an embodiment, an ink jet head (liquid ejecting head) includes an actuator plate and a cover plate (see FIG. 8). As illustrated in FIG. 1, channel grooves for a discharge channel (ejection channel) and a non-discharge channel (non-ejection channel) in a Z-direction are formed on a front surface of the actuator plate, so as to be alternately arranged in an X-direction, by cutting with a dicing blade or the like. The discharge channel and the non-discharge channel are formed to have a groove width W of smaller than 70 ?m, in order to correspond to high density of nozzles. In the embodiment, the discharge channel and the non-discharge channel are formed to have a groove width of 55 ?m, 50 ?m, or 40 ?m, for example.
    Type: Application
    Filed: March 19, 2018
    Publication date: September 27, 2018
    Inventors: Hitoshi NAKAYAMA, Takeshi SUGIYAMA, Daichi NISHIKAWA, Eriko MAEDA
  • Patent number: 10046563
    Abstract: A liquid jet head includes a partition separating adjacent grooves, a lower substrate fixing a lower portion of the partition, and an upper substrate installed on an upper end surface of the partition. The partition includes an electrode layer on a surface lower than the upper end surface, the electrode layer including an outer surface approximately perpendicular to the upper end surface, the outer surface continuing to the upper end surface through a first convex curved surface curving outward.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: August 14, 2018
    Assignee: SII PRINTEK INC.
    Inventor: Hitoshi Nakayama
  • Publication number: 20180222189
    Abstract: According to an embodiment, a liquid ejecting head chip includes an actuator plate and an in-channel electrode. In the actuator plate, a plurality of channels are arranged at a distance in an X-direction. Each of the channels includes an extension portion and a raise-and-cut portion. The extension portion extends in a Z-direction. The raise-and-cut portion continues from the extension portion toward one side of the Z-direction and has a groove depth which is gradually reduced toward the one side of the Z-direction. The in-channel electrode is formed on an inner surface of each of the channels, with a plating film.
    Type: Application
    Filed: January 30, 2018
    Publication date: August 9, 2018
    Inventor: Hitoshi NAKAYAMA
  • Patent number: 9837513
    Abstract: When a transistor having bottom gate bottom contact structure is manufactured, for example, a conductive layer constituting a source and a drain has a three-layer structure and two-step etching is performed. In the first etching process, an etching method in which the etching rates for at least the second film and the third film are high is employed, and the first etching process is performed until at least the first film is exposed. In the second etching process, an etching method in which the etching rate for the first film is higher than that in the first etching process and the etching rate for a “layer provided below and in contact with the first film” is lower than that in the first etching process is employed. The side wall of the second film is slightly etched when a resist mask is removed after the second etching process.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: December 5, 2017
    Assignee: Semicinductor Energy Laboratory Co., Ltd.
    Inventors: Shinya Sasagawa, Hitoshi Nakayama, Masashi Tsubuku, Daigo Shimada
  • Publication number: 20170229563
    Abstract: When a transistor having bottom gate bottom contact structure is manufactured, for example, a conductive layer constituting a source and a drain has a three-layer structure and two-step etching is performed. In the first etching process, an etching method in which the etching rates for at least the second film and the third film are high is employed, and the first etching process is performed until at least the first film is exposed. In the second etching process, an etching method in which the etching rate for the first film is higher than that in the first etching process and the etching rate for a “layer provided below and in contact with the first film” is lower than that in the first etching process is employed. The side wall of the second film is slightly etched when a resist mask is removed after the second etching process.
    Type: Application
    Filed: April 27, 2017
    Publication date: August 10, 2017
    Inventors: Shinya SASAGAWA, Hitoshi NAKAYAMA, Masashi TSUBUKU, Daigo SHIMADA