Patents by Inventor Yoshihiro Sakurai
Yoshihiro Sakurai 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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Patent number: 9817285Abstract: A liquid crystal panel includes: first and second substrates arranged to be opposite each other at a predetermined gap; a liquid crystal layer filled between the first and second substrates; alignment films; a counter electrode pattern formed on the first substrate; and a pixel electrode pattern formed on the first substrate so as to have a plurality of electrode branches, wherein the extension direction of at least one of slits formed at both ends from among slits formed between the plurality of electrode branches crosses the alignment direction of the liquid crystal layer at an angle of 7° or larger.Type: GrantFiled: May 23, 2016Date of Patent: November 14, 2017Assignee: Japan Display Inc.Inventors: Yoshihiro Sakurai, Hironao Tanaka, Hidemasa Yamaguchi
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Publication number: 20170102593Abstract: A liquid crystal panel includes: first and second substrates arranged to be opposite each other at a predetermined gap; a liquid crystal layer filled between the first and second substrates; alignment films; a counter electrode pattern formed on the first substrate; and a pixel electrode pattern formed on the first substrate so as to have a plurality of electrode branches, the pixel electrode pattern having a partial connection branch formed around a contact so as to transversely connect a plurality of electrode branches extending from the contact from among the plurality of electrode branches.Type: ApplicationFiled: December 21, 2016Publication date: April 13, 2017Inventors: Yoshihiro Sakurai, Hironao Tanaka, Hidemasa Yamaguchi
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Patent number: 9551909Abstract: A liquid crystal panel includes: first and second substrates arranged to be opposite each other at a predetermined gap; a liquid crystal layer filled between the first and second substrates; alignment films; a counter electrode pattern formed on the first substrate; and a pixel electrode pattern formed on the first substrate so as to have a plurality of electrode branches, the pixel electrode pattern having a partial connection branch formed around a contact so as to transversely connect a plurality of electrode branches extending from the contact from among the plurality of electrode branches.Type: GrantFiled: October 21, 2015Date of Patent: January 24, 2017Assignee: Japan Display Inc.Inventors: Yoshihiro Sakurai, Hironao Tanaka, Hidemasa Yamaguchi
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Publication number: 20160266455Abstract: A liquid crystal panel includes: first and second substrates arranged to be opposite each other at a predetermined gap; a liquid crystal layer filled between the first and second substrates; alignment films; a counter electrode pattern formed on the first substrate; and a pixel electrode pattern formed on the first substrate so as to have a plurality of electrode branches, wherein the extension direction of at least one of slits formed at both ends from among slits formed between the plurality of electrode branches crosses the alignment direction of the liquid crystal layer at an angle of 7° or larger.Type: ApplicationFiled: May 23, 2016Publication date: September 15, 2016Inventors: Yoshihiro Sakurai, Hironao Tanaka, Hidemasa Yamaguchi
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Patent number: 9366903Abstract: A liquid crystal panel includes: first and second substrates arranged to be opposite each other at a predetermined gap; a liquid crystal layer filled between the first and second substrates; alignment films; a counter electrode pattern formed on the first substrate; and a pixel electrode pattern formed on the first substrate so as to have a plurality of electrode branches, wherein the extension direction of at least one of slits formed at both ends from among slits formed between the plurality of electrode branches crosses the alignment direction of the liquid crystal layer at an angle of 7° or larger.Type: GrantFiled: December 18, 2009Date of Patent: June 14, 2016Assignee: Japan Display Inc.Inventors: Yoshihiro Sakurai, Hironao Tanaka, Hidemasa Yamaguchi
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Publication number: 20160041440Abstract: A liquid crystal panel includes: first and second substrates arranged to be opposite each other at a predetermined gap; a liquid crystal layer filled between the first and second substrates; alignment films; a counter electrode pattern formed on the first substrate; and a pixel electrode pattern formed on the first substrate so as to have a plurality of electrode branches, the pixel electrode pattern having a partial connection branch formed around a contact so as to transversely connect a plurality of electrode branches extending from the contact from among the plurality of electrode branches.Type: ApplicationFiled: October 21, 2015Publication date: February 11, 2016Inventors: Yoshihiro Sakurai, Hironao Tanaka, Hidemasa Yamaguchi
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Patent number: 9195102Abstract: A liquid crystal panel includes: first and second substrates arranged to be opposite each other at a predetermined gap; a liquid crystal layer filled between the first and second substrates; alignment films; a counter electrode pattern formed on the first substrate; and a pixel electrode pattern formed on the first substrate so as to have a plurality of electrode branches, the pixel electrode pattern having a partial connection branch formed around a contact so as to transversely connect a plurality of electrode branches extending from the contact from among the plurality of electrode branches.Type: GrantFiled: December 18, 2009Date of Patent: November 24, 2015Assignee: Japan Display Inc.Inventors: Yoshihiro Sakurai, Hironao Tanaka, Hidemasa Yamaguchi
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Patent number: 8864427Abstract: A processing machine for cutting a workpiece with a tool is presented. The processing machine includes a base member configured to support a table for receiving the workpiece, and a tool support disposed on the base member for rotation between a vertical position and a horizontal position and configured to support the tool, wherein the tool support is formed from a right leg portion, a left leg portion, and a main portion, such that the main portion connects upper ends of the right leg portion and the left leg portion, wherein the main portion is located above the table when the tool support is in the vertical position, and wherein a space above the table is not covered by the main portion when the tool support is in the horizontal position.Type: GrantFiled: March 30, 2011Date of Patent: October 21, 2014Assignee: Roland DG CorporationInventors: Masahiro Tomioka, Yoshihiro Sakurai
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Publication number: 20140232973Abstract: A liquid crystal panel includes: first and second substrates arranged to be opposite each other at a predetermined gap; a liquid crystal layer filled between the first and second substrates; alignment films; a counter electrode pattern formed on the first substrate; and a pixel electrode pattern formed on the first substrate so as to have a plurality of electrode branches, the extension direction of which is bent at one bend point provided near an upper pixel portion from the center of a pixel region, and which are connected at the end portion of at least the upper pixel portion or lower pixel portion, wherein the extension direction of a slit formed near the upper pixel portion from the bend point from among slits formed in the pixel electrode pattern crosses the alignment direction of the liquid crystal layer at an angle of 7° or larger.Type: ApplicationFiled: April 28, 2014Publication date: August 21, 2014Applicant: Japan Display West Inc.Inventors: Yoshihiro Sakurai, Hironao Tanaka, Harumi Okuno, Takeo Koito
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Patent number: 8643966Abstract: An inspection device or inspection method for a magnetic head or magnetic disc which can form a servo pattern applicable to a write system, and a magnetic disc recording device or magnetic disc recording method. In inspection or recording of a magnetic disc, which rotates the magnetic disc, a servo pattern is written into a servo pattern region of the magnetic disc by a write-in element of a magnetic head, and is read by a read-in element of the magnetic head. Servo following of a position of the magnetic head on the magnetic disc is performed based on the servo pattern which comprises a plurality of patterns. The patterns are written-in with a first frequency for causing the patterns to be subjected to the servo following and, the patterns are overwritten with a second frequency different from the first frequency, except a servo following width used in the servo following.Type: GrantFiled: August 11, 2011Date of Patent: February 4, 2014Assignee: Hitachi High-Technologies CorporationInventors: Kazuhiko Kishie, Kunihito Higa, Yoshihiro Sakurai
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Patent number: 8605378Abstract: The present invention realizes reduction of position information demodulation errors caused by the eccentricity of the magnetic disk and improvement of position signal detection accuracy, as well as enabling quick eccentricity clock correction for arbitrary clock frequencies. An inspection device in accordance with the present invention comprises: a servo demodulation unit which demodulates servo information; a PLL clock generating unit which generates a reference clock and supplies the reference clock to the servo demodulation unit; and a tester control unit. The PLL clock generating unit includes an eccentricity correction circuit for correcting the frequency of the reference clock depending on the eccentricity of the magnetic disk. The tester control unit generates correction data for correcting the frequency of the reference clock, multiplies the correction data by the inverse of a transfer function of the PLL clock generating unit, and supplies the product to the eccentricity correction circuit.Type: GrantFiled: February 14, 2012Date of Patent: December 10, 2013Assignee: Hitachi High-Technologies CorporationInventors: Yoshihiro Sakurai, Kunihito Higa, Yukio Yamamoto
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Publication number: 20130258513Abstract: Provided are magnetic read-write inspection apparatus and inspection method allowing measurement and inspection again by a sector servo system even when a magnetic disk measured and inspected by the sector servo system is detached from the inspection apparatus and re-mounted. A data write unit writes a servo pattern signal in a predetermined track range of the disk, writes an inspection test pattern signal onto an inspection track by performing sector-servo-system-based positioning and concentrically writes an eccentricity learning pattern onto an eccentricity learning track which is different from the inspection track. An eccentric quantity learning unit calculates an eccentric quantity of the disk from a read signal detection position by reading out the eccentricity learning pattern without using servo information. An eccentric quantity correction unit controls shaking of a magnetic head so as to cancel the calculated eccentric quantity when reading out a test signal from the disk.Type: ApplicationFiled: February 1, 2013Publication date: October 3, 2013Applicant: HITACHI HIGH-TECHNOLOGIES CORPORATIONInventors: Yoshihiro SAKURAI, Toshiaki SUZUKI, Kazuhiko KISHIE
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Patent number: 8502940Abstract: Disclosed herein is a display apparatus including a first substrate patterned to create pixel electrodes, a second substrate placed to face the first substrate and a liquid-crystal layer sandwiched by the first and second substrates wherein: one of the first and second substrates is patterned to create color filters each provided for one of a plurality of different colors as color filters each associated with one of the pixel electrodes each included in one of pixels each provided for one of the different colors; each of the pixels each provided for one of the different colors has a pixel area which varies from color to color; and the ratio of the electrode area of any particular one of the pixel electrodes to the pixel area of the pixel that includes the particular pixel electrode varies from color to color.Type: GrantFiled: October 8, 2008Date of Patent: August 6, 2013Assignee: Japan Display West, Inc.Inventors: Hironao Tanaka, Hidemasa Yamaguchi, Yoshihiro Sakurai
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Patent number: 8411243Abstract: A display device is provided and includes pixel electrodes, each including a plurality of electrode sections which are arranged parallel to each other. Each electrode section is bent approximately in the middle along its extension direction in plan view. The pixel electrodes include a center connection portion adapted to connect together the electrode sections at their bent portions, and include end connection portions adapted to connect together the electrode sections at their end portions, and include protruding portions each of which is formed by extending the end connection portion in such a manner as to protrude from the arranged electrode sections. The display device also includes a substrate on which the pixel electrodes are arranged, an opposed substrate provided to face the side of the substrate on which the pixel electrodes are formed, and a liquid crystal layer filled and sealed between the substrate and opposed substrate.Type: GrantFiled: March 14, 2012Date of Patent: April 2, 2013Assignee: Sony CorporationInventors: Hironao Tanaka, Yoshihiro Sakurai, Harumi Okuno
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Publication number: 20120250175Abstract: The present invention realizes reduction of position information demodulation errors caused by the eccentricity of the magnetic disk and improvement of position signal detection accuracy, as well as enabling quick eccentricity clock correction for arbitrary clock frequencies. An inspection device in accordance with the present invention comprises: a servo demodulation unit which demodulates servo information; a PLL clock generating unit which generates a reference clock and supplies the reference clock to the servo demodulation unit; and a tester control unit. The PLL clock generating unit includes an eccentricity correction circuit for correcting the frequency of the reference clock depending on the eccentricity of the magnetic disk. The tester control unit generates correction data for correcting the frequency of the reference clock, multiplies the correction data by the inverse of a transfer function of the PLL clock generating unit, and supplies the product to the eccentricity correction circuit.Type: ApplicationFiled: February 14, 2012Publication date: October 4, 2012Inventors: Yoshihiro Sakurai, Kunihito Higa, Yukio Yamamoto
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Patent number: 8279551Abstract: Drive waveforms with which extension and contraction characteristics of an actuator corresponding to a number of track eccentricity amounts are stored as data. By reading servo information written in a disk is obtained as a signal indicating a head displacement amount from a track. The head is moved in a direction in which the track is displaced by obtaining an amplitude corresponding to a slip amount of the head position and a rotation angle of maximum eccentricity, reading drive waveforms which is optimal in driving the actuator from the memory and driving the actuator with a drive waveform matched with the rotation angle at which the eccentricity is maximum.Type: GrantFiled: February 22, 2010Date of Patent: October 2, 2012Assignee: Hitachi High-Technologies CorporationInventors: Kunihito Higa, Yoshihiro Sakurai, Yukio Yamamoto
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Publication number: 20120194776Abstract: A display device is provided and includes pixel electrodes, each including a plurality of electrode sections which are arranged parallel to each other. Each electrode section is bent approximately in the middle along its extension direction in plan view. The pixel electrodes include a center connection portion adapted to connect together the electrode sections at their bent portions, and include end connection portions adapted to connect together the electrode sections at their end portions, and include protruding portions each of which is formed by extending the end connection portion in such a manner as to protrude from the arranged electrode sections. The display device also includes a substrate on which the pixel electrodes are arranged, an opposed substrate provided to face the side of the substrate on which the pixel electrodes are formed, and a liquid crystal layer filled and sealed between the substrate and opposed substrate.Type: ApplicationFiled: March 14, 2012Publication date: August 2, 2012Applicant: SONY CORPORATIONInventors: Hironao Tanaka, Yoshihiro Sakurai, Harumi Okuno
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Publication number: 20120194939Abstract: A patterned medium inspection method according to the present invention includes a timing computation process including a read process reading the reproduced signal of a patterned medium under inspection and a computation process computing the signal interval values from the patterned medium reproduced signal read in the read process, and a judgment process judging the quality of the patterned medium using the reproduced signal interval values computed in the computation process.Type: ApplicationFiled: December 12, 2011Publication date: August 2, 2012Inventors: Takuma NISHIMOTO, Masami Makuuchi, Yoshihiro Sakurai, Kunihito Higa, Fujio Onishi
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Publication number: 20120190555Abstract: A physical construction of a superconducting multi-core billet is provided together with a method for manufacturing a superconducting multi-core wire to offer reduction of manufacturing time (cost) and low frequency of occurrence of wire break during diameter-reduction drawing. The superconducting multi-core billet by the present invention has such a construction that a plurality of vertical holes are made in a billet 2 of copper or copper alloy of circular cross-section; that the vertical holes are filled with a superconducting material 4 comprised of NbTi; that a copper-volume ratio, which is a ratio of the copper or the copper alloy to NbTi in volume, is not smaller than four; that the plurality of vertical holes are made in the billet so that each of the vertical holes will be arrayed at an equal spacing on each of two inner and outer layers concentric circles.Type: ApplicationFiled: January 19, 2012Publication date: July 26, 2012Applicant: HITACHI CABLE, LTD.Inventors: Takaaki SASAOKA, Morio KIMURA, Yoshihiro SAKURAI, Katsumi MIYASHITA, Hiroshi KOTOU, Youichi SUZUKI
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Patent number: D669526Type: GrantFiled: August 3, 2011Date of Patent: October 23, 2012Assignee: Roland DG CorporationInventor: Yoshihiro Sakurai