Patents by Inventor Yoshitsugu Kawashima
Yoshitsugu Kawashima 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: 20240146055Abstract: Because power receiving and distributing equipment is configured with a plurality of devices combined together, it is sometimes difficult to perform inspection operation for the inspection items separated into those set for each individual device. Therefore, in the power receiving and distributing equipment, even if an attempt is made to associate each device with an inspection result, an inspection result of a plurality of devices that are grouped cannot be associated with each device. According to the present disclosure, an inspection result of the power receiving and distributing equipment can be associated with an inspection item of each device.Type: ApplicationFiled: January 10, 2024Publication date: May 2, 2024Applicant: Mitsubishi Electric CorporationInventors: Yoshitsugu KAWAMURA, Yuki KAWASHIMA, Takahisa YAMAUCHI
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Patent number: 9559063Abstract: A semiconductor device includes an interlayer insulating layer disposed over a semiconductor substrate, and including a plurality of wiring layers; a seal ring disposed in the interlayer insulating layer, and surrounding a circuit region of the semiconductor substrate; a crack lead ring disposed in the interlayer insulating layer, and surrounding the seal ring; and a protective film disposed over the interlayer insulating layer, and covering the crack lead ring and the seal ring. The crack lead ring includes an uppermost wiring layer in an uppermost layer of a plurality of wiring layers. When the crack lead ring has a wiring in an underlayer below the uppermost layer, the uppermost layer wiring extends towards the outside of the device, relative to the wiring in the underlayer. The protective film has an end overlapped with an end of the uppermost layer wiring to form a step over the interlayer insulating layer.Type: GrantFiled: July 19, 2013Date of Patent: January 31, 2017Assignee: Renesas Electronics CorporationInventors: Takeshi Watanabe, Junya Ishii, Hirofumi Saitou, Hiroyasu Kitajima, Tatsuki Kojima, Yoshitsugu Kawashima
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Publication number: 20140027928Abstract: A semiconductor device an interlayer insulating layer disposed over a semiconductor substrate, and including a plurality of wiring layers; a seal ring disposed in the interlayer insulating layer, and surrounding a circuit region of the semiconductor substrate; a crack lead ring disposed in the interlayer insulating layer, and surrounding the seal ring; and a protective film disposed over the interlayer insulating layer, and covering the crack lead ring and the seal ring. The crack lead ring includes an uppermost wiring layer in an uppermost layer of a plurality of wiring layers. When the crack lead ring has a wiring in an underlayer below the uppermost layer, the uppermost layer wiring extends towards the outside of the device, relative to the wiring in the underlayer. The protective film has an end overlapped with an end of the uppermost layer wiring to form a step over the interlayer insulating layer.Type: ApplicationFiled: July 19, 2013Publication date: January 30, 2014Inventors: Takeshi WATANABE, Junya ISHII, Hirofumi SAITOU, Hiroyasu KITAJIMA, Tatsuki KOJIMA, Yoshitsugu KAWASHIMA
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Patent number: 8581368Abstract: A semiconductor wafer having a plurality of interconnect layers, includes a plurality of chip-composing portions, a dicing region separating the chip-composing portions from each other, and a plurality of inter-chip interconnects formed in the dicing region and electrically connecting adjacent ones of the chip-composing portions, wherein each of the inter-chip interconnects has a width of an intermediate portion narrower than widths of connection end portions connected to the adjacent ones of the chip-composing portions.Type: GrantFiled: April 3, 2012Date of Patent: November 12, 2013Assignee: Renesas Electronics CorporationInventors: Shinichi Uchida, Yoshitsugu Kawashima, Hiroshi Ise
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Patent number: 8310032Abstract: In a wafer, a first chip region and a second chip region are separated from each other by a dicing region. The dicing region includes: a first center region; a first intermediate region located on the first chip region's side of the first center region; a second intermediate region located on the second chip region's side of the first center region; a first outer region located on the first chip region's side of the first intermediate region; and a second outer region located on the second chip region's side of the second intermediate region. Surfaces of the first and second intermediate regions are respectively covered by bank-shaped resin films extending in a longitudinal direction of the dicing region. Respective surfaces of the first center region, the first outer region and the second outer region are not covered by resin films.Type: GrantFiled: October 8, 2010Date of Patent: November 13, 2012Assignee: Renesas Electronics CorporationInventor: Yoshitsugu Kawashima
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Publication number: 20120187573Abstract: A semiconductor wafer having a plurality of interconnect layers, includes a plurality of chip-composing portions, a dicing region separating the chip-composing portions from each other, and a plurality of inter-chip interconnects formed in the dicing region and electrically connecting adjacent ones of the chip-composing portions, wherein each of the inter-chip interconnects has a width of an intermediate portion narrower than widths of connection end portions connected to the adjacent ones of the chip-composing portions.Type: ApplicationFiled: April 3, 2012Publication date: July 26, 2012Applicant: RENESAS ELECTRONICS CORPORATIONInventors: Shinichi UCHIDA, Yoshitsugu Kawashima, Hiroshi Ise
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Patent number: 8193038Abstract: A method for manufacturing a semiconductor device includes forming a semiconductor wafer including a plurality of interconnect layers, the semiconductor wafer including: a plurality of chip-composing portions; a dicing region separating the chip-composing portions from each other; and a plurality of inter-chip interconnects formed in the dicing region and electrically connecting adjacent ones of the chip-composing portions; and forming semiconductor chips by dicing the dicing region so as to divide the chip-composing portions, wherein each of the inter-chip interconnects has a width of an intermediate portion narrower than widths of connection end portions connected to the adjacent ones of the chip-composing portions.Type: GrantFiled: May 27, 2010Date of Patent: June 5, 2012Assignee: Renesas Electronics CorporationInventors: Shinichi Uchida, Yoshitsugu Kawashima, Hiroshi Ise
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Patent number: 8158505Abstract: A method for manufacturing a semiconductor device includes forming a semiconductor wafer including a plurality of interconnect layers, the semiconductor wafer including: a plurality of chip-composing portions; a dicing region separating the chip-composing portions from each other; and a plurality of inter-chip interconnects electrically connecting adjacent ones of the chip-composing portions and formed in one of the interconnect layers and in the dicing region; a dummy metal pattern comprising a plurality of dummy metals, the dummy metal pattern being formed in at least one of the interconnect layers over or below the inter-chip interconnects only in an area corresponded to a region where the inter-chip interconnects are arranged and corresponded to a region therearound; and forming semiconductor chips by dicing the dicing region so as to divide the chip-composing portions.Type: GrantFiled: May 27, 2010Date of Patent: April 17, 2012Assignee: Renesas Electronics CorporationInventors: Shinichi Uchida, Yoshitsugu Kawashima, Hiroshi Ise
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Patent number: 8043940Abstract: An improved yield of chips is realized by reducing the width of dicing streets on the front surface side of a semiconductor wafer. A method for semiconductor chip, divided a semiconductor wafer 10 having a plurality of circuit patterns formed on one surface 18 into pieces, comprising, forming a groove in a boundary region between the circuit patterns from the other surface 19 of the semiconductor wafer 10 by using a blade, forming a modified layer 14 in the boundary region between the circuit patterns by irradiation with laser light L from the one surface 18 or the other surface 19 of the semiconductor wafer 10, and dividing the semiconductor wafer into pieces by breaking the modified layer 14. The modified layer 14 is formed between a bottom surface 17 of a groove portion 16 and the one surface 18 of the semiconductor wafer 10, and a forming width WM of the modified layer 14 is smaller than the width of the groove portion 16.Type: GrantFiled: May 29, 2009Date of Patent: October 25, 2011Assignee: Renesas Electronics CorporationInventor: Yoshitsugu Kawashima
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Publication number: 20110156219Abstract: A semiconductor device is disclosed which can prevent interlayer cracking of interlayer dielectric films while improving the adhesion between the interlayer dielectric films in a dicing process using a dicing blade. In a scribing line area, dummy wirings are formed respectively in a blade area through which a dicing blade passes in a dicing process and in non-blade areas formed on both sides of the blade area and through which the dicing blade does not pass. In the non-blade areas, vertically adjacent dummy wirings are coupled together through dummy vias, while in the blade area the vertically adjacent dummy wirings are not coupled together through dummy vias.Type: ApplicationFiled: December 23, 2010Publication date: June 30, 2011Applicant: RENESAS ELECTRONICS CORPORATIONInventors: Yoshitsugu KAWASHIMA, Masayuki HIROI, Hirofumi SAITO
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Publication number: 20110084364Abstract: In a wafer, a first chip region and a second chip region are separated from each other by a dicing region. The dicing region includes: a first center region; a first intermediate region located on the first chip region's side of the first center region; a second intermediate region located on the second chip region's side of the first center region; a first outer region located on the first chip region's side of the first intermediate region; and a second outer region located on the second chip region's side of the second intermediate region. Surfaces of the first and second intermediate regions are respectively covered by bank-shaped resin films extending in a longitudinal direction of the dicing region. Respective surfaces of the first center region, the first outer region and the second outer region are not covered by resin films.Type: ApplicationFiled: October 8, 2010Publication date: April 14, 2011Applicant: RENESAS ELECTRONICS CORPORATIONInventor: Yoshitsugu KAWASHIMA
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Publication number: 20100320612Abstract: A method for manufacturing a semiconductor device includes forming a semiconductor wafer including a plurality of interconnect layers, the semiconductor wafer including: a plurality of chip-composing portions; a dicing region separating the chip-composing portions from each other; and a plurality of inter-chip interconnects formed in the dicing region and electrically connecting adjacent ones of the chip-composing portions; and forming semiconductor chips by dicing the dicing region so as to divide the chip-composing portions, wherein each of the inter-chip interconnects has a width of an intermediate portion narrower than widths of connection end portions connected to the adjacent ones of the chip-composing portions.Type: ApplicationFiled: May 27, 2010Publication date: December 23, 2010Applicant: RENESAS ELECTRONICS CORPORATIONInventors: Shinichi Uchida, Yoshitsugu Kawashima, Hiroshi Ise
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Publication number: 20100320611Abstract: A method for manufacturing a semiconductor device includes forming a semiconductor wafer including a plurality of interconnect layers, the semiconductor wafer including: a plurality of chip-composing portions; a dicing region separating the chip-composing portions from each other; and a plurality of inter-chip interconnects electrically connecting adjacent ones of the chip-composing portions and formed in one of the interconnect layers and in the dicing region; a dummy metal pattern comprising a plurality of dummy metals, the dummy metal pattern being formed in at least one of the interconnect layers over or below the inter-chip interconnects only in an area corresponded to a region where the inter-chip interconnects are arranged and corresponded to a region therearound; and forming semiconductor chips by dicing the dicing region so as to divide the chip-composing portions.Type: ApplicationFiled: May 27, 2010Publication date: December 23, 2010Applicant: Renesas Electronics CorporationInventors: Shinichi Uchida, Yoshitsugu Kawashima, Hiroshi Ise
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Publication number: 20090294913Abstract: An improved yield of chips is realized by reducing the width of dicing streets on the front surface side of a semiconductor wafer. A method for semiconductor chip, divided a semiconductor wafer 10 having a plurality of circuit patterns formed on one surface 18 into pieces, comprising, forming a groove in a boundary region between the circuit patterns from the other surface 19 of the semiconductor wafer 10 by using a blade, forming a modified layer 14 in the boundary region between the circuit patterns by irradiation with laser light L from the one surface 18 or the other surface 19 of the semiconductor wafer 10, and dividing the semiconductor wafer into pieces by breaking the modified layer 14. The modified layer 14 is formed between a bottom surface 17 of a groove portion 16 and the one surface 18 of the semiconductor wafer 10, and a forming width WM of the modified layer 14 is smaller than the width of the groove portion 16.Type: ApplicationFiled: May 29, 2009Publication date: December 3, 2009Applicant: NEC ELECTRONICS CORPORATIONInventor: Yoshitsugu Kawashima