Patents by Inventor Kenichi Nagashige

Kenichi Nagashige 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).

  • Patent number: 8759119
    Abstract: A semiconductor device has an alignment mark which can be recognized by a conventional wafer prober. A redistribution layer connects electrodes of the semiconductor device to electrode pads located in predetermined positions of the redistribution layer. Metal posts configured to be provided with external connection electrodes are formed on the electrode pads of the redistribution layer. A mark member made of the same material as the metal posts is formed on the redistribution layer. The mark member serves as an alignment mark located in a predetermined positional relationship with the metal posts.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: June 24, 2014
    Assignee: Fujitsu Semiconductor Limited
    Inventors: Shigeyuki Maruyama, Yasuyuki Itoh, Tetsurou Honda, Kazuhiro Tashiro, Makoto Haseyama, Kenichi Nagashige, Yoshiyuki Yoneda, Hirohisa Matsuki
  • Patent number: 8404496
    Abstract: A semiconductor device has an alignment mark which can be recognized by a conventional wafer prober. A redistribution layer connects electrodes of the semiconductor device to electrode pads located in predetermined positions of the redistribution layer. Metal posts configured to be provided with external connection electrodes are formed on the electrode pads of the redistribution layer. A mark member made of the same material as the metal posts is formed on the redistribution layer. The mark member serves as an alignment mark located in a predetermined positional relationship with the metal posts.
    Type: Grant
    Filed: May 24, 2006
    Date of Patent: March 26, 2013
    Assignee: Fujitsu Semiconductor Limited
    Inventors: Shigeyuki Maruyama, Yasuyuki Itoh, Tetsurou Honda, Kazuhiro Tashiro, Makoto Haseyama, Kenichi Nagashige, Yoshiyuki Yoneda, Hirohisa Matsuki
  • Patent number: 7556985
    Abstract: A semiconductor device has a resin package layer on a principal surface of a semiconductor chip, on which a number of bump electrodes are formed, wherein the semiconductor device has a chamfer surface or a stepped surface on a top edge part such that the external shock or stress applied to such an edge part is dissipated by the chamfer surface of the stepped surface.
    Type: Grant
    Filed: October 14, 2005
    Date of Patent: July 7, 2009
    Assignee: Fujitsu Microelectronics Limited
    Inventors: Norio Fukasawa, Hirohisa Matsuki, Kenichi Nagashige, Yuzo Hamanaka, Muneharu Morioka
  • Publication number: 20060279003
    Abstract: A semiconductor device has an alignment mark which can be recognized by a conventional wafer prober. A redistribution layer connects electrodes of the semiconductor device to electrode pads located in predetermined positions of the redistribution layer. Metal posts configured to be provided with external connection electrodes are formed on the electrode pads of the redistribution layer. A mark member made of the same material as the metal posts is formed on the redistribution layer. The mark member serves as an alignment mark located in a predetermined positional relationship with the metal posts.
    Type: Application
    Filed: May 24, 2006
    Publication date: December 14, 2006
    Applicant: FUJITSU LIMITED
    Inventors: Shigeyuki Maruyama, Yasuyuki Itoh, Tetsurou Honda, Kazuhiro Tashiro, Makoto Haseyama, Kenichi Nagashige, Yoshiyuki Yoneda, Hirohisa Matsuki
  • Patent number: 7112889
    Abstract: A semiconductor device has an alignment mark which can be recognized by a conventional wafer prober. A redistribution layer connects electrodes of the semiconductor device to electrode pads located in predetermined positions of the redistribution layer. Metal posts configured to be provided with external connection electrodes are formed on the electrode pads of the redistribution layer. A mark member made of the same material as the metal posts is formed on the redistribution layer. The mark member serves as an alignment mark located in a predetermined positional relationship with the metal posts.
    Type: Grant
    Filed: May 25, 2000
    Date of Patent: September 26, 2006
    Assignee: Fujitsu Limited
    Inventors: Shigeyuki Maruyama, Yasuyuki Itoh, Tetsurou Honda, Kazuhiro Tashiro, Makoto Haseyama, Kenichi Nagashige, Yoshiyuki Yoneda, Hirohisa Matsuki
  • Patent number: 7064047
    Abstract: A semiconductor device has a resin package layer on a principal surface of a semiconductor chip, on which a number of bump electrodes are formed, wherein the semiconductor device has a chamfer surface or a stepped surface on a top edge part such that the external shock or stress applied to such an edge part is dissipated by the chamfer surface of the stepped surface.
    Type: Grant
    Filed: July 19, 2004
    Date of Patent: June 20, 2006
    Assignee: Fujitsu Limited
    Inventors: Norio Fukasawa, Hirohisa Matsuki, Kenichi Nagashige, Yuzo Hamanaka, Muneharu Morioka
  • Publication number: 20060030127
    Abstract: A semiconductor device has a resin package layer on a principal surface of a semiconductor chip, on which a number of bump electrodes are formed, wherein the semiconductor device has a chamfer surface or a stepped surface on a top edge part such that the external shock or stress applied to such an edge part is dissipated by the chamfer surface of the stepped surface.
    Type: Application
    Filed: October 14, 2005
    Publication date: February 9, 2006
    Applicant: FUJITSU LIMITED
    Inventors: Norio Fukasawa, Hirohisa Matsuki, Kenichi Nagashige, Yuzo Hamanaka, Muneharu Morioka
  • Patent number: 6987054
    Abstract: A semiconductor device has a resin package layer on a principal surface of a semiconductor chip, on which a number of bump electrodes are formed, wherein the semiconductor device has a chamfer surface or a stepped surface on a top edge part such that the external shock or stress applied to such an edge part is dissipated by the chamfer surface of the stepped surface.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: January 17, 2006
    Assignee: Fujitsu Limited
    Inventors: Norio Fukasawa, Hirohisa Matsuki, Kenichi Nagashige, Yuzo Hamanaka, Muneharu Morioka
  • Publication number: 20040259346
    Abstract: A semiconductor device has a resin package layer on a principal surface of a semiconductor chip, on which a number of bump electrodes are formed, wherein the semiconductor device has a chamfer surface or a stepped surface on a top edge part such that the external shock or stress applied to such an edge part is dissipated by the chamfer surface of the stepped surface.
    Type: Application
    Filed: July 19, 2004
    Publication date: December 23, 2004
    Applicant: FUJITSU LIMITED
    Inventors: Norio Fukasawa, Hirohisa Matsuki, Kenichi Nagashige, Yuzo Hamanaka, Muneharu Morioka
  • Patent number: 6784542
    Abstract: A semiconductor device has a resin package layer on a principal surface of a semiconductor chip, on which a number of bump electrodes are formed, wherein the semiconductor device has a chamfer surface or a stepped surface on a top edge part such that the external shock or stress applied to such an edge part is dissipated by the chamfer surface of the stepped surface.
    Type: Grant
    Filed: July 15, 2003
    Date of Patent: August 31, 2004
    Assignee: Fujitsu Limited
    Inventors: Norio Fukasawa, Hirohisa Matsuki, Kenichi Nagashige, Yuzo Hamanaka, Muneharu Morioka
  • Patent number: 6774650
    Abstract: A probe card for testing a wafer having formed a plurality of semiconductor chips, the probe card including a board and a multi-layer substrate. The probe card may also include a flexible substrate. A contact electrode, located opposite from an electrode on one of the chips, is disposed above or below the flexible substrate, or may be provided on an elastic material on the multi-layered substrate. A first wiring has a first portion connected to the contact electrode, a level transitioning portion extending from a level of the first portion to the multi-layer substrate at a lower level, and a connecting terminal at an end of the level transitioning portion connected to an internal terminal on the multi-layered substrate. A second wiring in the multi-layered substrate connects the internal terminal to an external terminal at a periphery of the multi-layer substrate. A third wiring on the board connects the external terminal on the multi-layer substrate to an external connecting terminal on the board.
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: August 10, 2004
    Assignee: Fujitsu Limited
    Inventors: Shigeyuki Maruyama, Daisuke Koizumi, Naoyuki Watanabe, Yoshito Konno, Eiji Yoshida, Toshiyuki Honda, Toshimi Kawahara, Kenichi Nagashige
  • Publication number: 20040012088
    Abstract: A semiconductor device has a resin package layer on a principal surface of a semiconductor chip, on which a number of bump electrodes are formed, wherein the semiconductor device has a chamfer surface or a stepped surface on a top edge part such that the external shock or stress applied to such an edge part is dissipated by the chamfer surface of the stepped surface.
    Type: Application
    Filed: July 15, 2003
    Publication date: January 22, 2004
    Applicant: FUJITSU LIMITED,
    Inventors: Norio Fukasawa, Hirohisa Matsuki, Kenichi Nagashige, Yuzo Hamanaka, Muneharu Morioka
  • Patent number: 6657282
    Abstract: A semiconductor device has a resin package layer on a principal surface of a semiconductor chip, on which a number of bump electrodes are formed, wherein the semiconductor device has a chamfer surface or a stepped surface on a top edge part such that the external shock or stress applied to such an edge part is dissipated by the chamfer surface of the stepped surface.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: December 2, 2003
    Assignee: Fujitsu Limited
    Inventors: Norio Fukasawa, Hirohisa Matsuki, Kenichi Nagashige, Yuzo Hamanaka, Muneharu Morioka
  • Publication number: 20030160626
    Abstract: A probe card for testing a wafer having formed a plurality of semiconductor chips, the probe card including a board and a multi-layer substrate. The probe card may also include a flexible substrate. A contact electrode, located opposite from an electrode on one of the chips, is disposed above or below the flexible substrate, or may be provided on an elastic material on the multi-layered substrate. A first wiring has a first portion connected to the contact electrode, a level transitioning portion extending from a level of the first portion to the multi-layer substrate at a lower level, and a connecting terminal at an end of the level transitioning portion connected to an internal terminal on the multi-layered substrate. A second wiring in the multi-layered substrate connects the internal terminal to an external terminal at a periphery of the multi-layer substrate. A third wiring on the board connects the external terminal on the multi-layer substrate to an external connecting terminal on the board.
    Type: Application
    Filed: March 21, 2003
    Publication date: August 28, 2003
    Applicant: FUJITSU LIMITED
    Inventors: Shigeyuki Maruyama, Daisuke Koizumi, Naoyuki Watanabe, Yoshito Konno, Eiji Yoshida, Toshiyuki Honda, Toshimi Kawahara, Kenichi Nagashige
  • Patent number: 6563330
    Abstract: A probe card for testing a wafer having formed a plurality of semiconductor chips, the probe card including a board and a multi-layer substrate. The probe card may also include a flexible substrate. A contact electrode, located opposite from an electrode on one of the chips, is disposed above or below the flexible substrate, or may be provided on an elastic material on the multi-layered substrate. A first wiring has a first portion connected to the contact electrode, a level transitioning portion extending from a level of the first portion to the multi-layer substrate at a lower level, and a connecting terminal at an end of the level transitioning portion connected to an internal terminal on the multi-layered substrate. A second wiring in the multi-layered substrate connects the internal terminal to an external terminal at a periphery of the multi-layer substrate. A third wiring on the board connects the external terminal on the multi-layer substrate to an external connecting terminal on the board.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: May 13, 2003
    Assignee: Fujitsu Limited
    Inventors: Shigeyuki Maruyama, Daisuke Koizumi, Naoyuki Watanabe, Yoshito Konno, Eiji Yoshida, Toshiyuki Honda, Toshimi Kawahara, Kenichi Nagashige
  • Patent number: 6511620
    Abstract: A method of producing semiconductor devices which have an excellent separability from a metal mold after resin encapsulation and thus eliminates the need to clean the metal mold. A metal mold for producing such semiconductor devices is also provided. According to the method of the present invention, the metal mold is first opened, and two separation sheets are disposed on dividing surfaces including cavity forming surfaces of a first metal mold and a second metal mold. A substrate is then placed on one of the separation sheets, with its semiconductor chip formed surface facing the second metal mold. An encapsulation resin is provided on the substrate placed on one of the separation sheets. The metal mold in a heated state is closed and pressed to form a resin layer for encapsulating electrodes formed on the substrate. The metal mold is again opened, and the resin-encapsulated substrate is taken out of the metal mold.
    Type: Grant
    Filed: February 23, 2000
    Date of Patent: January 28, 2003
    Assignees: Fujitsu Limited, Fujitsu Automation Limited
    Inventors: Toshimi Kawahara, Hirohisa Matsuki, Yasuhiro Shinma, Yoshiyuki Yoneda, Norio Fukasawa, Yuzo Hamanaka, Kenichi Nagashige, Takashi Hozumi
  • Patent number: 6471501
    Abstract: A mold for press-molding a resin package body includes a lower mold and an upper mold, wherein the upper mold includes a press plate held in a tiltable manner with respect to a press head used for urging the upper mold against the lower mold and a lock mechanism for locking the press plate. The lower mold includes an inner die carrying a semiconductor device and a resin tablet and an outer die surrounding the inner die in a manner movable up and down with respect to the inner die. In operation, the press plate is first engaged with the outer die in the unlocked state to achieve an exact parallelism with respect to the inner die, and after locking the press plate and melting the resin tablet, the press plate is urged further toward the inner die while simultaneously lowering the outer die such that the space formed by the lower die, outer die and the press plate for accommodating a semiconductor chip is collapsed.
    Type: Grant
    Filed: March 18, 1999
    Date of Patent: October 29, 2002
    Assignee: Fujitsu Limited
    Inventors: Yasuhiro Shinma, Muneharu Morioka, Norio Fukasawa, Yuzo Hamanaka, Tadashi Uno, Hirohisa Matsuki, Kenichi Nagashige
  • Patent number: 6469370
    Abstract: In a semiconductor device of the present invention and a production method thereof, an electronic circuit is provided in a semiconductor substrate, the electronic circuit having terminals. An internal wiring pattern is provided in the substrate, the internal wiring pattern being connected to the electronic circuit terminals. A protective layer is provided on the substrate, the protective layer covering the substrate. Vias are provided on the substrate so as to project from the protective layer, the vias being connected to the internal wiring pattern at arbitrary positions on the substrate. An external wiring pattern is provided on the protective layer, the external wiring pattern being connected to the vias. Projection electrodes are connected to the external wiring pattern, the projection electrodes having a predetermined height above the external wiring pattern.
    Type: Grant
    Filed: February 1, 2000
    Date of Patent: October 22, 2002
    Assignee: Fujitsu Limited
    Inventors: Toshimi Kawahara, Hirohisa Matsuki, Yasuhiro Shinma, Yoshiyuki Yoneda, Norio Fukasawa, Yuzo Hamanaka, Kenichi Nagashige, Takashi Hozumi
  • Patent number: 6455920
    Abstract: A semiconductor device has a resin package layer on a principal surface of a semiconductor chip, on which a number of bump electrodes are formed, wherein the semiconductor device has a chamfer surface or a stepped surface on a top edge part such that the external shock or stress applied to such an edge part is dissipated by the chamfer surface of the stepped surface.
    Type: Grant
    Filed: September 25, 1998
    Date of Patent: September 24, 2002
    Assignee: Fujitsu Limited
    Inventors: Norio Fukasawa, Hirohisa Matsuki, Kenichi Nagashige, Yuzo Hamanaka, Muneharu Morioka
  • Patent number: 6437432
    Abstract: A semiconductor device is provided, which device includes a semiconductor substrate including a plurality of signal pads and ground pads, an insulating film formed on the semiconductor substrate, a conductive metal film formed on the insulating film and electrically connected to the ground pads and a plurality of first interconnection lines electrically connected to the signal pads and insulated from the conductive metal film. The conductive metal film is formed over a region including the first interconnection lines in a plan view of the semiconductor device.
    Type: Grant
    Filed: December 26, 2000
    Date of Patent: August 20, 2002
    Assignee: Fujitsu Limited
    Inventors: Masamitsu Ikumo, Toshimi Kawahara, Norio Fukasawa, Kenichi Nagashige