Patents by Inventor Kazumi Yamagata
Kazumi Yamagata 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: 11467099Abstract: There is provided an inspection apparatus, including: a housing having an upper surface on which an interface part for electrical connection with a probe card is provided; a first frame configured to be movable to a connection position where the first frame covers an upper portion of the interface part and to a retraction position where the first frame is retracted from the upper portion of the interface part; and a second frame configured to support a test head, arranged inside the first frame, and held by the first frame so as to be switchable between a fixed state in which the second frame is fixed to the first frame and a movable state in which the second frame is movable at least in a direction parallel to the interface part at the connection position.Type: GrantFiled: March 17, 2020Date of Patent: October 11, 2022Assignee: TOKYO ELECTRON LIMITEDInventors: Kazumi Yamagata, Tatsuo Kawashima
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Patent number: 11385260Abstract: A probe card holding device includes: a frame that holds a probe card by vacuum suction; a sealing member provided on the frame and configured to form an enclosed space by contacting the probe card; a placement section in which a first engaging portion provided at an outer circumference of the probe card is placed when the probe card is attached to the frame; a second engaging portion configured to be engaged with the first engaging portion; and an actuator configured to drive the second engaging portion between a first position and a second position. When the second engaging portion is engaged with the first engaging portion in response to dissipation of the vacuum suction, the probe card is held by the probe card holding device while the sealing member maintains a seal with the probe card.Type: GrantFiled: February 3, 2021Date of Patent: July 12, 2022Assignee: Tokyo Electron LimitedInventors: Kazumi Yamagata, Tatsuo Kawashima
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Patent number: 11221350Abstract: A probe device according to an embodiment is a probe device for inspecting electrical characteristics of an inspection target object, mounted on a mounting table, by electrically contacting probes and the inspection target object to each other. The probe device includes a support base having on an upper surface thereof a needle trace transfer member for transferring needle traces of the probes, a fixed support portion extending from a side of the mounting table and configured to fix and support the support base from below, and a movable support unit that is disposed below the support base and is configured to be moved up and down to be in contact with the support base and movably support the support base.Type: GrantFiled: June 14, 2018Date of Patent: January 11, 2022Assignee: TOKYO ELECTRON LIMITEDInventors: Tomohiro Ota, Kazumi Yamagata, Mitsushiro Mochizuki
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Publication number: 20210255217Abstract: A probe card holding device includes: a frame that holds a probe card by vacuum suction; a sealing member provided on the frame and configured to form an enclosed space by contacting the probe card; a placement section in which a first engaging portion provided at an outer circumference of the probe card is placed when the probe card is attached to the frame; a second engaging portion configured to be engaged with the first engaging portion; and an actuator configured to drive the second engaging portion between a first position and a second position. When the second engaging portion is engaged with the first engaging portion in response to dissipation of the vacuum suction, the probe card is held by the probe card holding device while the sealing member maintains a seal with the probe card.Type: ApplicationFiled: February 3, 2021Publication date: August 19, 2021Inventors: Kazumi YAMAGATA, Tatsuo KAWASHIMA
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Publication number: 20200309717Abstract: There is provided an inspection apparatus, including: a housing having an upper surface on which an interface part for electrical connection with a probe card is provided; a first frame configured to be movable to a connection position where the first frame covers an upper portion of the interface part and to a retraction position where the first frame is retracted from the upper portion of the interface part; and a second frame configured to support a test head, arranged inside the first frame, and held by the first frame so as to be switchable between a fixed state in which the second frame is fixed to the first frame and a movable state in which the second frame is movable at least in a direction parallel to the interface part at the connection position.Type: ApplicationFiled: March 17, 2020Publication date: October 1, 2020Inventors: Kazumi YAMAGATA, Tatsuo KAWASHIMA
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Publication number: 20200124641Abstract: A probe device according to an embodiment is a probe device for inspecting electrical characteristics of an inspection target object, mounted on a mounting table, by electrically contacting probes and the inspection target object to each other. The probe device includes a support base having on an upper surface thereof a needle trace transfer member for transferring needle traces of the probes, a fixed support portion extending from a side of the mounting table and configured to fix and support the support base from below, and a movable support unit that is disposed below the support base and is configured to be moved up and down to be in contact with the support base and movably support the support base.Type: ApplicationFiled: June 14, 2018Publication date: April 23, 2020Inventors: Tomohiro OOTA, Kazumi YAMAGATA, Mitsushiro MOCHIZUKI
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Patent number: 7944200Abstract: A probe apparatus includes a holding frame holding a test head through a biasing unit biasing the test head. An annular member is rotatably mounted in an opening of a ceiling plate of a main body. Cam followers are rotatably provided circumferentially on the annular member. An intermediate connecting member is provided in a lower surface of the test head, for bringing the test head into electrical contact with an upper surface of the probe card. Protrusions for guiding the cam followers are provided corresponding thereto at an outer periphery of the intermediate connecting member, upper surfaces of the protrusions being inclined. The cam followers are moved relatively upward along the respective inclined surfaces of the protrusions by rotating the annular member so that the intermediate connecting member is pushed downward against a biasing force of the biasing unit to bring the test head into press-contact with the probe card.Type: GrantFiled: September 22, 2009Date of Patent: May 17, 2011Assignee: Tokyo Electron LimitedInventors: Tomoya Endo, Hiroshi Yamada, Kazumi Yamagata
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Patent number: 7701236Abstract: A prove apparatus includes a first and a second loading port for mounting therein two carriers facing each other, a wafer transfer mechanism having a rotation center between the loading ports, and a first and a second inspection unit being symmetrical to each other and disposed in accordance with the arrangement of the loading ports. In this configuration, wafers are directly transferred between the carrier and a wafer chuck of the inspection unit by the wafer transfer mechanism. The wafer transfer mechanism has three arms for unloading two wafers from the carrier. The prove apparatus has a compact size and achieves a high throughput.Type: GrantFiled: May 14, 2008Date of Patent: April 20, 2010Assignee: Tokyo Electron LimitedInventors: Shuji Akiyama, Tadashi Obikane, Masaru Suzuki, Yasuhito Yamamoto, Kazuya Yano, Yuji Asakawa, Kazumi Yamagata, Shigeki Nakamura, Eiichi Matsuzawa, Kazuhiro Ozawa, Fumito Kagami, Shinji Kojima
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Publication number: 20100079161Abstract: A probe apparatus includes a holding frame holding a test head through a biasing unit biasing the test head. An annular member is rotatably mounted in an opening of a ceiling plate of a main body. Cam followers are rotatably provided circumferentially on the annular member. An intermediate connecting member is provided in a lower surface of the test head, for bringing the test head into electrical contact with an upper surface of the probe card. Protrusions for guiding the cam followers are provided corresponding thereto at an outer periphery of the intermediate connecting member, upper surfaces of the protrusions being inclined. The cam followers are moved relatively upward along the respective inclined surfaces of the protrusions by rotating the annular member so that the intermediate connecting member is pushed downward against a biasing force of the biasing unit to bring the test head into press-contact with the probe card.Type: ApplicationFiled: September 22, 2009Publication date: April 1, 2010Applicant: TOKYO ELECTON LIMITEDInventors: Tomoya Endo, Hiroshi Yamada, Kazumi Yamagata
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Publication number: 20080290886Abstract: A prove apparatus includes a first and a second loading port for mounting therein two carriers facing each other, a wafer transfer mechanism having a rotation center between the loading ports, and a first and a second inspection unit being symmetrical to each other and disposed in accordance with the arrangement of the loading ports. In this configuration, wafers are directly transferred between the carrier and a wafer chuck of the inspection unit by the wafer transfer mechanism. The wafer transfer mechanism has three arms for unloading two wafers from the carrier. The prove apparatus has a compact size and achieves a high throughput.Type: ApplicationFiled: May 14, 2008Publication date: November 27, 2008Applicant: TOKYO ELECTRON LIMITEDInventors: Shuji Akiyama, Tadashi Obikane, Masaru Suzuki, Yasuhito Yamamoto, Kazuya Yano, Yuji Asakawa, Kazumi Yamagata, Shigeki Nakamura, Eiichi Matsuzawa, Kazuhiro Ozawa, Fumito Kagami, Shinji Kojima
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Patent number: 6118290Abstract: A prober including a probe card, a main chuck, a spacer, a conveying mechanism, and a supporting portion. The probe card is provided on an upper surface of a main body of the prober. The main chuck is provided in the main body of the prober, underneath the probe card, to be movable in X, Y, Z and .theta. directions. The spacer has an upper portion on which a cleaner tool for the probe card is held. The conveying mechanism for conveying the spacer between outside of the main body of the prober and a position on the main chuck. The supporting portion is provided on an outer side surface of the main chuck, for supporting the spacer. The main chuck is moved up and down directly underneath the probe card such that probes of the probe card is cleaned with the cleaner tool on the spacer held on the main chuck.Type: GrantFiled: April 28, 1998Date of Patent: September 12, 2000Assignee: Tokyo Electron LimitedInventors: Masahiko Sugiyama, Yoshihiko Nakamura, Kazumi Yamagata
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Patent number: 6060892Abstract: A probe card attaching mechanism fits a probe card to a prober that checks electric characteristics of an object to be tested (e.g., an integrated circuit formed on a semiconductor wafer). The probe card has measurement contactors which are to be brought into contact with the electrodes of the object. The probe card attaching mechanism is provided with a fixing ring, a ring-like card holder, and a lock ring. The fixing ring is secured at an opening section that is on top of the casing of the prober. The fixing ring has a reference surface on the lower side thereof. The card holder is adapted to hold the probe card. The card holder has a reference surface on the upper side and a number of driven portions of cam mechanisms on the outer circumference. The lock ring is provided on the lower side of the fixing ring and is rotatable in both a normal direction and a reverse direction.Type: GrantFiled: December 22, 1997Date of Patent: May 9, 2000Assignee: Tokyo Electron LimitedInventor: Kazumi Yamagata
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Patent number: 5640100Abstract: A probe apparatus for examining an electrical characteristic of IC chips formed on a semiconductor wafer has a work table provided in a casing and a probe card provided above the work table. The probe card is detachably attached to an insert ring supported by the casing. A card exchanging mechanism for automatically attaching and detaching the probe card to and from the insert ring is provided. The card exchanging mechanism has a tray for mounting the probe card and transferring the-probe card. The tray is changeable at an initial position outside the casing between a usable state where the tray is horizontally expanded and an unusable state where the tray is vertically folded. An opening/closing cover is provided to cover the tray in the unusable state.Type: GrantFiled: October 20, 1995Date of Patent: June 17, 1997Assignees: Tokyo Electron Limited, Tokyo Electron Yamanashi LimitedInventors: Kazumi Yamagata, Minoru Uchida
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Patent number: D383683Type: GrantFiled: April 25, 1996Date of Patent: September 16, 1997Assignee: Tokyo Electron LimitedInventors: Osamu Kamata, Masahiko Sugiyama, Munetoshi Nagasaka, Haruhiko Yoshioka, Kazumi Yamagata