Patents by Inventor Toshifumi Yagi
Toshifumi Yagi 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: 20090225247Abstract: An active matrix substrate includes a substrate, a TFT formed on the substrate, a storage capacitor element formed on the substrate, an interlayer insulating film covering the storage capacitor element, and a pixel electrode formed on the interlayer insulating film. The storage capacitor element includes a storage capacitor line, an insulating film formed on the storage capacitor line, and two or more storage capacitor electrodes opposed to the storage capacitor line with the insulating film interposed therebetween. The two or more storage capacitor electrodes are electrically connected via associated contact holes formed in the interlayer insulating film to the pixel electrode and electrically continuous with a drain electrode of the TFT.Type: ApplicationFiled: March 24, 2009Publication date: September 10, 2009Applicant: Sharp Kabushiki KaishaInventors: Toshifumi Yagi, Tomoki Noda, Toshihide Tsubata, Masanori Takeuchi, Kenji Enda
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Patent number: 7586563Abstract: The present invention is a color filter substrate comprising: a non-laminated part in which a colored layer and/or a transparent layer are arranged in a plane; and a laminated part in which parts of the colored layer and/or the transparent layer are laminated as two or more layers on a substrate, (1) a film thickness of a layer constituting the laminated part is not less than 90% and not more than 110% to a film thickness of a corresponding layer of the non-laminated part and/or (2) the colored layer and/or the transparent layer are formed using a dry film having a solid-phase resist layer having penetration amount in a penetration hardness test at 120° C. of not more than 0.5 ?m.Type: GrantFiled: July 19, 2005Date of Patent: September 8, 2009Assignee: Sharp Kabushiki KaishaInventors: Tsuyoshi Tokuda, Toshifumi Yagi, Toshihide Tsubata, Yoshinori Kinai, Ryuji Kurihara
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Patent number: 7570323Abstract: A color filter substrate and a liquid crystal display apparatus include, on a substrate: a colorized layer including color layers; a stacked layer protruding in comparison with the colorized layer; an opposing electrode covering the colorized layer and the stacked layer; an alignment layer formed at least on a part of the opposing electrode covering the colorized layer; and an insulating layer stacked on an entire surface of another part of the opposing electrode covering the stacked layer. With this, the short circuit between the opposing electrode and a pixel electrode is prevented, so that a color filter substrate, a liquid crystal display apparatus including the color filter substrate, and a method of manufacturing the color substrate, those being able to improve the yield of the liquid crystal display apparatus, are provided.Type: GrantFiled: December 22, 2004Date of Patent: August 4, 2009Assignee: Sharp Kabushiki KaishaInventors: Toshifumi Yagi, Toshihide Tsubata, Tsuyoshi Tokuda
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Method for fabricating thin film transistor array substrate and thin film transistor array substrate
Publication number: 20090152560Abstract: After forming a gate electrode (4a) in a first step, a gate insulating film (5), a semiconductor film (8) and a conducting film (12) including a transparent conducting film (9) are stacked, and on the thus obtained multilayered body (18), a resist pattern (13a) including a first opening (14a) for exposing the conducting film (12) therein and a second opening (14b) having a bottom portion (B) above the gate electrode (4a) is formed. Portions of the conducting film (12) and the semiconductor film (8) exposed in the first opening (14a) are etched, the bottom portion (B) of the second opening (14b) is removed for exposing the conducting film (12) therein, and the exposed conducting film (12) is etched, so as to form a TFT (20) in a second step. A pixel electrode (5a), a protection masking layer (17a) and a projection (17b) are formed in a third step.Type: ApplicationFiled: May 29, 2006Publication date: June 18, 2009Inventors: Toshifumi Yagi, Toshihide Tsubata, Yoshinori Shimada -
Publication number: 20090091671Abstract: An active matrix substrate includes: storage capacitor wirings (18); a Cs trunk wiring (50) connected with the storage capacitor wirings via contact holes (48) provided in a non-display region (44); scanning signal lines (16) provided in the same layer as the storage capacitor wirings (18) and crossing the Cs trunk wiring (50) in the non-display region (44); an insulating layer between the storage capacitor wirings (18) and the Cs trunk wiring (50) which includes: a through-bore portion for forming the contact hole (48); a first film thickness portion (53) adjacent to the through-bore portion; and a second film thickness portion which is thicker than the first film thickness portion (53) and situated at least in the intersections of the storage capacitor wirings (18) with the Cs trunk wiring (50).Type: ApplicationFiled: March 30, 2007Publication date: April 9, 2009Inventors: Toshihide Tsubata, Toshifumi Yagi
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Publication number: 20090073361Abstract: A color filter substrate for a liquid crystal display device includes a color layer, a photo spacer and a counter electrode disposed on the substrate, and an alignment control protrusion is disposed on the counter electrode for controlling alignment of liquid crystal. A manufacturing method for the color filter substrate includes the step of forming an opening by laser irradiation in a region of the counter electrode corresponding to an absent portion occurring in the alignment control protrusion. The manufacturing method is also applicable to an active matrix substrate for a liquid crystal display device. The manufacturing method can effectively correct a defect if one occurs in the alignment control protrusion.Type: ApplicationFiled: May 12, 2006Publication date: March 19, 2009Applicant: SHARP KABUSHIKI KAISHAInventors: Toshifumi Yagi, Toshihide Tsubata, Yoshinori Shimada
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Publication number: 20090073335Abstract: An active matrix substrate suppresses reduction in production yield and increase in production steps and simultaneously permits both sufficient securing of a storage capacity and improvement of an aperture ratio of a pixel. The active matrix substrate is an active matrix substrate and includes a thin film transistor disposed at an intersection of a scanning signal line with a data signal line on a substrate, the thin film transistor including a gate electrode connected to the scanning signal line, a source electrode connected to the data signal line, and a drain electrode connected to a drain lead-out wiring; a storage capacitor upper electrode connected to the drain lead-out wiring and a pixel electrode; and a storage capacitor wiring overlapping with the storage capacitor upper electrode through an insulating film, wherein the storage capacitor wiring has an extending portion overlapping with the drain lead-out wiring through the insulating film.Type: ApplicationFiled: September 20, 2005Publication date: March 19, 2009Applicant: Sharp Kabushiki KaishaInventors: Toshifumi Yagi, Toshihide Tsubata, Tsuyoshi Tokuda, Kenji Enda, Yoshinori Shimada, Shinya Maruoka
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Publication number: 20090066870Abstract: A method of manufacturing an active matrix substrate prevents an increase in the number of production steps while simultaneously preventing electrostatic discharge at a TFT channel. The method preferably includes the steps of forming a short-circuit wiring for connecting a data signal line or a source electrode to a drain electrode or a drain side circuit; successively forming an upper insulating film having an opening for short-circuit wiring separation and a transparent conductive film at a region above the short-circuit wiring as upper layers of the short-circuit wiring; and removing at least the transparent conductive film inside the opening for short-circuit wiring separation and the short-circuit wiring below the opening for short-circuit wiring separation to perform patterning of the pixel electrode and separation of the short-circuit wiring in the same step.Type: ApplicationFiled: March 7, 2006Publication date: March 12, 2009Applicant: SHARP KABUSHIKI KAISHAInventors: Toshifumi Yagi, Toshihide Tsubata
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Publication number: 20080309841Abstract: An active matrix substrate comprises a thin film transistor disposed at the crossing point of a scanning signal line with a data signal line on the substrate, with a gate electrode of the transistor being connected to the scanning signal line, a source electrode thereof being connected to the data signal line and a drain electrode thereof being connected to an interconnection electrode, and a storage capacitor upper electrode disposed so as to oppose a storage capacitor wiring pattern at least via an insulating layer and connected to the interconnection electrode and a pixel electrode. The storage capacitor upper electrode comprises at least three divided electrodes in the region opposing the storage capacitor wiring pattern.Type: ApplicationFiled: August 18, 2008Publication date: December 18, 2008Inventors: TOSHIFUMI YAGI, Toshihide Tsubata, Masanori Takeuchi, Yuhko Hisada
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Patent number: 7430024Abstract: An active matrix substrate includes a thin film transistor disposed at the crossing point of a scanning signal line with a data signal line on the substrate, with a gate electrode of the transistor being connected to the scanning signal line, a source electrode thereof being connected to the data signal line and a drain electrode thereof being connected to an interconnection electrode, and a storage capacitor upper electrode disposed so as to oppose a storage capacitor wiring pattern at least via an insulating layer and connected to the interconnection electrode and a pixel electrode. The storage capacitor upper electrode includes at least three divided electrodes in the region opposing the storage capacitor wiring pattern.Type: GrantFiled: January 25, 2005Date of Patent: September 30, 2008Assignee: Sharp Kabushiki KaishaInventors: Toshifumi Yagi, Toshihide Tsubata, Masanori Takeuchi, Yuhko Hisada
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Publication number: 20080049155Abstract: The present invention provides an active matrix substrate of comprising on the substrate: a plurality of scanning signal lines and data signal lines; a thin film transistor provided at an intersecting point of the signal lines and comprising a gate electrode connected to the scanning signal line, a source electrode connected to the data signal line; and a pixel electrode electrically connected to a drain electrode of the thin film transistor, wherein the active matrix substrate comprises a structure having an at least partly multilinear data signal line and an interconnection electrode for correction.Type: ApplicationFiled: May 27, 2005Publication date: February 28, 2008Inventors: Toshifumi Yagi, Masanori Takeuchi, Toshihide Tsubata, Nobuyoshi Nagashima, Akira Yamaguchi
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Publication number: 20080002076Abstract: An active matrix substrate includes a substrate, a TFT formed on the substrate, a storage capacitor element formed on the substrate, an interlayer insulating film covering the storage capacitor element, and a pixel electrode formed on the interlayer insulating film. The storage capacitor element includes a storage capacitor line, an insulating film formed on the storage capacitor line, and two or more storage capacitor electrodes opposed to the storage capacitor line with the insulating film interposed therebetween. The two or more storage capacitor electrodes are electrically connected via associated contact holes formed in the interlayer insulating film to the pixel electrode and electrically continuous with a drain electrode of the TFT.Type: ApplicationFiled: December 14, 2005Publication date: January 3, 2008Applicant: SHARP KABUSHIKI KAISHAInventors: Toshifumi Yagi, Tomoki Noda, Toshihide Tsubata, Masanori Takeuchi, Kenji Enda
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Patent number: 7015506Abstract: A color filter substrate for a display device includes pixels arranged in columns and rows. The substrate includes color filters, each being associated with one of the pixels and including at least two A-color filters in a first color and at least two B-color filters in a second color. Each row is associated with a group of color filters including at least one of the A-color filters and at least one of the B-color filters. Each of the A-color and B-color filters has first and second sides defining a width in the row direction. The area SA of each A-color filter is greater than the area SB of each B-color filter. The first side of each B-color filter has at least one recess, and the first side of each B-color filter has a shape that is defined by forming a recess on the first side of each A-color filter toward the second side thereof in the row direction.Type: GrantFiled: January 26, 2004Date of Patent: March 21, 2006Assignee: Sharp Kabushiki KaishaInventors: Tsuyoshi Tokuda, Toshihide Tsubata, Toshifumi Yagi
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Publication number: 20060017872Abstract: The present invention is a color filter substrate comprising: a non-laminated part in which a colored layer and/or a transparent layer are arranged in a plane; and a laminated part in which parts of the colored layer and/or the transparent layer are laminated as two or more layers on a substrate, (1) a film thickness of a layer constituting the laminated part is not less than 90% and not more than 110% to a film thickness of a corresponding layer of the non-laminated part and/or (2) the colored layer and/or the transparent layer are formed using a dry film having a solid-phase resist layer having penetration amount in a penetration hardness test at 120° C. of not more than 0.5 ?m.Type: ApplicationFiled: July 19, 2005Publication date: January 26, 2006Applicant: Sharp Kabushiki KaishaInventors: Tsuyoshi Tokuda, Toshifumi Yagi, Toshihide Tsubata, Yoshinori Kinai, Ryuji Kurihara
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Publication number: 20050162893Abstract: The active matrix substrate of the present invention is the active matrix substrate in which the faulty connection in a storage capacitor element as caused by a short circuit between storage capacitor electrodes due to a conductive foreign material or a pinhole in an insulating layer or by a short circuit between a data signal line and a storage capacitor upper electrode can be repaired with ease.Type: ApplicationFiled: January 25, 2005Publication date: July 28, 2005Inventors: Toshifumi Yagi, Toshihide Tsubata, Masanori Takeuchi, Yuhko Hisada
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Publication number: 20050151909Abstract: A color filter substrate and a liquid crystal display apparatus include, on a substrate: a colorized layer including color layers; a stacked layer protruding in comparison with the colorized layer; an opposing electrode covering the colorized layer and the stacked layer; an alignment layer formed at least on a part of the opposing electrode covering the colorized layer; and an insulating layer stacked on an entire surface of another part of the opposing electrode covering the stacked layer. With this, the short circuit between the opposing electrode and a pixel electrode is prevented, so that a color filter substrate, a liquid crystal display apparatus including the color filter substrate, and a method of manufacturing the color substrate, those being able to improve the yield of the liquid crystal display apparatus, are provided.Type: ApplicationFiled: December 22, 2004Publication date: July 14, 2005Applicant: Sharp Kabushiki KaishaInventors: Toshifumi Yagi, Toshihide Tsubata, Tsuyoshi Tokuda
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Publication number: 20040150769Abstract: A color filter substrate for a display device includes pixels arranged in columns and rows. The substrate includes color filters, each being associated with one of the pixels and including at least two A-color filters in a first color and at least two B-color filters in a second color. Each row is associated with a group of color filters including at least one of the A-color filters and at least one of the B-color filters. Each of the A-color and B-color filters has first and second sides defining a width in the row direction. The area SA of each A-color filter is greater than the area SB of each B-color filter. The first side of each B-color filter has at least one recess, and the first side of each B-color filter has a shape that is defined by forming a recess on the first side of each A-color filter toward the second side thereof in the row direction.Type: ApplicationFiled: January 26, 2004Publication date: August 5, 2004Applicant: SHARP KABUSHIKI KAISHAInventors: Tsuyoshi Tokuda, Toshihide Tsubata, Toshifumi Yagi
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Patent number: 4879886Abstract: A circular knitting machine comprising a knitting assembly for forming a tubular knitted fabric, fabric transport rollers for delivering the fabric from the assembly, a take-up spool for rolling up the delivered fabric thereon, and a pair of opposed frames stoppably rotatable about a vertical axis in synchronism with the knitting assembly. The rollers and the spool are supported by the frames. A constant torque is transmitted from a drive transmission for the frames to the transport rollers by a constant-torque transmission utilizing a magnetic force, while the spool is driven with power transmitted from the drive transmission through a belt transmission, so that the fabric knitted at a high speed can be rolled up properly. The spool comprises a pair of divided spool members and is therefore easily withdrawable from the rolled-up fabric.Type: GrantFiled: April 27, 1988Date of Patent: November 14, 1989Assignee: Gunze LimitedInventors: Toshihiko Okada, Toshifumi Yagi, Satoshi Suzuki