Patents by Inventor Yuichi Sawai
Yuichi Sawai 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: 20250048909Abstract: A display apparatus with high display quality is provided. In the display apparatus, a dummy pixel portion is a region that does not contribute to display. The dummy pixel portion is positioned adjacent to the outside of a pixel portion in a plan view. The pixel portion includes a first insulating layer, a first pixel electrode and a second pixel electrode over the first insulating layer, a first layer over the first pixel electrode, a second layer over the second pixel electrode, and a common electrode over the first layer and the second layer. The dummy pixel portion includes the first insulating layer, a first conductive layer and a second conductive layer over the first insulating layer, a third layer over the first conductive layer, a fourth layer over the second conductive layer, and the common electrode over the third layer and the fourth layer. The first insulating layer includes a first groove and a second groove.Type: ApplicationFiled: December 16, 2022Publication date: February 6, 2025Inventors: Yuichi YANAGISAWA, Daiki NAKAMURA, Hiromi SAWAI, Ryota HODO
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Patent number: 10252938Abstract: The present invention aims at providing a lead-free glass composition that can be soften and flowed at a firing temperature that is equal to or lower than that of conventional low melting point lead glass. Furthermore, the present invention aims at providing a lead-free glass composition having fine thermal stability and fine chemical stability in addition to that property. The lead-free glass composition according to the present invention is characterized by comprising at least Ag2O, V2O5 and TeO2 when the components are represented by oxides, wherein the total content ratio of Ag2O, V2O5 and TeO2 is 75 mass % or more. Preferably, the lead-free glass composition comprises 10 to 60 mass % of Ag2O, 5 to 65 mass % of V2O5, and 15 to 50 mass % of TeO2.Type: GrantFiled: June 25, 2012Date of Patent: April 9, 2019Assignee: HITACHI, LTD.Inventors: Yuichi Sawai, Takashi Naito, Takuya Aoyagi, Tadashi Fujieda
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Patent number: 10026923Abstract: An electronic component has an organic member between two transparent substrates, in which outer peripheral portions of the two transparent substrates are bonded by a sealing material containing low melting glass. The low melting glass contains vanadium oxide, tellurium oxide, iron oxide and phosphoric acid, and satisfies the following relations (1) and (2) in terms of oxides. The sealing material is formed of a sealing material paste which contains the low melting glass, a resin binder and a solvent, the low melting glass containing vanadium oxide, tellurium oxide, iron oxide and phosphoric acid, and satisfies the following relations (1) and (2) in terms of the oxides. Thereby, thermal damages to an organic element or an organic material contained in the electronic component can be reduced and an electronic component having a glass bonding layer of high reliability can be produced efficiently.Type: GrantFiled: June 28, 2017Date of Patent: July 17, 2018Assignee: Hitachi Chemical Company, Ltd.Inventors: Takashi Naito, Shinichi Tachizono, Kei Yoshimura, Yuji Hashiba, Motomune Kodama, Masanori Miyagi, Takuya Aoyagi, Yuichi Sawai, Tadashi Fujieda, Takeshi Tsukamoto, Hajime Murakami
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Patent number: 9824900Abstract: The deterioration of the resin base materials in the bonded structure is prevented. In a bonded structure containing two base materials at least one of which is a resin, an oxide which contains either P or Ag, V, and Te, and are formed by softening on the two base materials, bond the two base materials. In addition, in a method for producing a bonded structure containing two base materials at least one of which is a resin containing: supplying an oxide containing either P or Ag, V, and Te to the base material; and applying electromagnetic waves to the oxide, whereby the oxide, which soften on the substrates, bond the two base material.Type: GrantFiled: November 9, 2012Date of Patent: November 21, 2017Assignee: Hitachi, Ltd.Inventors: Motomune Kodama, Takashi Naito, Yuichi Sawai, Tadashi Fujieda, Takuya Aoyagi, Masanori Miyagi
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Patent number: 9796821Abstract: Mechanical strength of a composite material is enhanced by a simple process. In a composite material comprising a resin or a rubber and an oxide glass, the resin or the rubber is dispersed in the oxide glass, or the oxide glass is dispersed in the resin or the rubber. The composite material has a function that the oxide glass is softened and fluidized by electromagnetic waves.Type: GrantFiled: November 19, 2012Date of Patent: October 24, 2017Assignee: Hitachi, Ltd.Inventors: Takuya Aoyagi, Takashi Naito, Tadashi Fujieda, Yuichi Sawai, Hajime Murakami, Hiroshi Yoshida, Akihiro Miyauchi, Masahiko Ogino
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Publication number: 20170301883Abstract: An electronic component has an organic member between two transparent substrates, in which outer peripheral portions of the two transparent substrates are bonded by a sealing material containing low melting glass. The low melting glass contains vanadium oxide, tellurium oxide, iron oxide and phosphoric acid, and satisfies the following relations (1) and (2) in terms of oxides. The sealing material is formed of a sealing material paste which contains the low melting glass, a resin binder and a solvent, the low melting glass containing vanadium oxide, tellurium oxide, iron oxide and phosphoric acid, and satisfies the following relations (1) and (2) in terms of the oxides. Thereby, thermal damages to an organic element or an organic material contained in the electronic component can be reduced and an electronic component having a glass bonding layer of high reliability can be produced efficiently.Type: ApplicationFiled: June 28, 2017Publication date: October 19, 2017Inventors: Takashi NAITO, Shinichi TACHIZONO, Kei YOSHIMURA, Yuji HASHIBA, Motomune KODAMA, Masanori MIYAGI, Takuya AOYAGI, Yuichi SAWAI, Tadashi FUJIEDA, Takeshi TSUKAMOTO, Hajime MURAKAMI
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Patent number: 9789568Abstract: An aluminum wire body, in which an aluminum or aluminum alloy electric wire and a metal to be joined are joined by solder, wherein the solder includes an oxide glass including vanadium and a conducting particle. Preferably, the conducting particle contained in the solder is 90% by volume or less and the oxide glass is 20% by volume to 90% by volume. Further preferably, the oxide glass includes 40% by mass or more of Ag2O in terms of oxides and the glass transition point is 180° C. or less.Type: GrantFiled: February 11, 2014Date of Patent: October 17, 2017Assignee: Hitachi, Ltd.Inventors: Takuya Aoyagi, Motomune Kodama, Takashi Naito, Tadashi Fujieda, Yuichi Sawai, Masanori Miyagi, Haruo Akahoshi, Norihisa Iwasaki
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Patent number: 9728341Abstract: An electronic component has an organic member between two transparent substrates, in which outer peripheral portions of the two transparent substrates are bonded by a sealing material containing to melting glass. The low melting glass contains vanadium oxide, tellurium oxide, iron oxide and phosphoric acid, and satisfies the following relations (1) and (2) in terms of oxides. The sealing material is formed of a sealing material paste which contains the low melting glass, a resin binder and a solvent, the low melting glass containing vanadium oxide, tellurium oxide, iron oxide and phosphoric acid, and satisfies the following relations (1) and (2) in terms of the oxides. Thereby, thermal damages to an organic element or an organic material contained in the electronic component can be reduced and an electronic component having a glass bonding layer of high reliability can be produced efficiently.Type: GrantFiled: July 25, 2013Date of Patent: August 8, 2017Assignee: Hitachi Chemical Company, Ltd.Inventors: Takashi Naito, Shinichi Tachizono, Kei Yoshimura, Yuji Hashiba, Motomune Kodama, Masanori Miyagi, Takuya Aoyagi, Yuichi Sawai, Tadashi Fujieda, Takeshi Tsukamoto, Hajime Murakami
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Patent number: 9708460Abstract: Mechanical strength of a composite material is enhanced by a simple process. In a composite material comprising a resin or a rubber and an oxide glass, the resin or the rubber is dispersed in the oxide glass, or the oxide glass is dispersed in the resin or the rubber, and the oxide glass is softened and fluidized by heating at or lower than a heat decomposition temperature of the resin or the rubber.Type: GrantFiled: November 1, 2012Date of Patent: July 18, 2017Assignee: HITACHI, LTD.Inventors: Tadashi Fujieda, Takashi Naito, Takuya Aoyagi, Yuichi Sawai, Hajime Murakami, Hiroshi Yoshida, Akihiro Miyauchi, Masahiko Ogino
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Patent number: 9614178Abstract: In an electronic component including two substrates at least one of which is transparent, an organic member arranged between these substrates, and a bonding portion located onto respective outer circumferential portions of the two substrates, this bonding portion includes a low-melting glass and filler particles. The low-melting glass includes vanadium oxide. The filler particles include a low thermally-expandable material, and an oxide containing a bivalent transition metal as a constituent element. The oxide is dispersed in the low thermally-expandable material, and the low thermally-expandable material has a thermal expansion coefficient of 5×10?7/° C. or less in a temperature range from 30 to 250° C. This invention makes it possible to heat the filler particles by irradiation with a laser to give the electronic component which is a component having a highly reliable bonding portion.Type: GrantFiled: October 9, 2013Date of Patent: April 4, 2017Assignee: Hitachi Chemical Company, Ltd.Inventors: Takashi Naito, Shinichi Tachizono, Kei Yoshimura, Yuji Hashiba, Takuya Aoyagi, Masanori Miyagi, Motomune Kodama, Yuichi Sawai, Tadashi Fujieda, Takeshi Tsukamoto, Hajime Murakami
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Patent number: 9543265Abstract: Disclosed is a jointed body wherein multiple base members are jointed to each other through a jointing layer, and at least one of the base members is a base member of a ceramic material, semiconductor or glass. The joint material layer contains a metal and an oxide. The oxide contains V and Te, and is present between the metal and the base members. Disclosed is also a joint material in the form of a paste containing an oxide glass containing V and Te, metal particles, and a solvent; in the form of a foil piece or plate in which particles of an oxide glass containing V and Te are embedded; or in the form of a foil piece or plate containing a layer of an oxide glass containing V and Te, and a layer of a metal.Type: GrantFiled: February 12, 2014Date of Patent: January 10, 2017Assignee: Hitachi, Ltd.Inventors: Motomune Kodama, Takashi Naito, Tadashi Fujieda, Yuichi Sawai, Takuya Aoyagi, Masanori Miyagi
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Patent number: 9490380Abstract: A metal matrix composite having high corrosion resistance even if the coating film deposit amount is low is obtained. A metal matrix composite includes a metal or alloy substrate coated with a molten transition metal oxide glass, wherein the transition metal oxide glass has an n-type polarity. Further, a method for producing a metal matrix composite includes a step of applying a paste containing a transition metal oxide glass, an organic binder, and an organic solvent onto the surface of a metal or alloy substrate, and a step of forming a glass coating film on the substrate by heating to and maintaining a temperature equal to or higher than the softening point of the transition metal oxide glass after the application step, wherein the transition metal oxide glass has an n-type polarity.Type: GrantFiled: January 15, 2013Date of Patent: November 8, 2016Assignee: HITACHI, LTD.Inventors: Tadashi Fujieda, Takashi Naito, Takuya Aoyagi, Yuichi Sawai
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Patent number: 9334415Abstract: The purpose of the present invention is to prevent the discoloration of an ink even when the ink is printed on a base to be printed and then exposed to a high-temperature environment. An ink including a glass composite, resin and a conducting agent, wherein the glass composite includes Ag2O in the range of 10 mass % to 60 mass %, V2O5 in the range of 5 mass % to 65 mass %, and TeO2 in the range of 15 mass % to 50 mass %, and the total content ratio of the Ag2O, V2O5, and TeO2 is at least 75 mass %.Type: GrantFiled: December 5, 2012Date of Patent: May 10, 2016Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Masahiko Ogino, Yuichi Sawai, Takashi Naito, Naoshi Takahashi, Hiroshi Sasaki, Kenichi Souma
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Publication number: 20150337106Abstract: The purpose of the present invention is to provide a low-melting-point glass resin composite material with which the heat resistance and heat conductivity of an insulating resin can be improved. The low-melting-point glass resin composite material includes: a lead-free low-melting-point glass composition that contains Ag2O, V2O5, and TeO2, and in which the total content of Ag2O, V2O5, and TeO2 is 75 mass % or more; and a resin composition having a 5% thermal weight reduction temperature equal to or greater than a softening point temperature of the low-melting-point glass composition.Type: ApplicationFiled: December 26, 2012Publication date: November 26, 2015Inventors: Yuri KAJIHARA, Satoru AMOU, Takashi NAITO, Yuichi SAWAI, Motomune KODAMA
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Patent number: 9196563Abstract: Bondability and heat conductivity of a bonded body in which some of metal, ceramic, or semiconductor are bonded to each other are improved. In the bonded body in which a first member and a second member each comprise one of metal, ceramic, or semiconductor are bonded to each other, the second member is bonded to the first member by way of an adhesive member disposed to the surface of the first member, and the adhesive member contains a V2O5-containing glass and metal particles.Type: GrantFiled: November 21, 2012Date of Patent: November 24, 2015Assignee: Hitachi, Ltd.Inventors: Yuichi Sawai, Takashi Naito, Takuya Aoyagi, Tadashi Fujieda, Mutsuhiro Mori
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Publication number: 20150279700Abstract: The deterioration of the resin base materials in the bonded structure is prevented. In a bonded structure containing two base materials at least one of which is a resin, an oxide which contains either P or Ag, V, and Te, and are formed by softening on the two base materials, bond the two base materials. In addition, in a method for producing a bonded structure containing two base materials at least one of which is a resin containing: supplying an oxide containing either P or Ag, V, and Te to the base material; and applying electromagnetic waves to the oxide, whereby the oxide, which soften on the substrates, bond the two base material.Type: ApplicationFiled: November 9, 2012Publication date: October 1, 2015Inventors: Motomune Kodama, Takashi Naito, Yuichi Sawai, Tadashi Fujieda, Takuya Aoyagi, Masanori Miyagi
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Publication number: 20150270508Abstract: In an electronic component including two substrates at least one of which is transparent, an organic member arranged between these substrates, and a bonding portion located onto respective outer circumferential portions of the two substrates, this bonding portion includes a low-melting glass and filler particles. The low-melting glass includes vanadium oxide. The filler particles include a low thermally-expandable material, and an oxide containing a bivalent transition metal as a constituent element. The oxide is dispersed in the low thermally-expandable material, and the low thermally-expandable material has a thermal expansion coefficient of 5×10?7/° C. or less in a temperature range from 30 to 250° C. This invention makes it possible to heat the filler particles by irradiation with a laser to give the electronic component which is a component having a highly reliable bonding portion.Type: ApplicationFiled: October 9, 2013Publication date: September 24, 2015Applicant: Hitachi Chemical Company, Ltd.Inventors: Takashi Naito, Shinichi Tachizono, Kei Yoshimura, Yuji Hashiba, Takuya Aoyagi, Masanori Miyagi, Motomune Kodama, Yuichi Sawai, Tadashi Fujieda, Takeshi Tsukamoto, Hajime Murakami
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Publication number: 20150221845Abstract: In a thermoelectric conversion device, support substrates (13, 14), electrodes (11, 12) formed on the support substrates and thermoelectric conversion parts (7, 10) formed on the electrodes and containing semiconductor glass are disposed. The semiconductor glass is non-lead glass containing vanadium, and the electrodes contain any of Al, Ti, Ti nitride, W, W nitride, W silicide, Ta, Cr and Si. This constitution makes it possible to provide a device structure which can be produced by an inexpensive production process, uses a composite material with an excellent thermoelectric conversion characteristic and can solve the characteristic problem of the composite material. As a result, it is possible to provide a thermoelectric conversion device with excellent characteristics and high reliability at a low cost.Type: ApplicationFiled: August 31, 2012Publication date: August 6, 2015Inventors: Chisaki Takubo, Hideaki Takano, Kengo Asai, Takashi Naito, Tadashi Fujieda, Yuichi Sawai, Noriyuki Sakuma
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Publication number: 20150187510Abstract: An electronic component has an organic member between two transparent substrates, in which outer peripheral portions of the two transparent substrates are bonded by a sealing material containing to melting glass. The low melting glass contains vanadium oxide, tellurium oxide, iron oxide and phosphoric acid, and satisfies the following relations (1) and (2) in terms of oxides. The sealing material is formed of a sealing material paste which contains the low melting glass, a resin binder and a solvent, the low melting glass containing vanadium oxide, tellurium oxide, iron oxide and phosphoric acid, and satisfies the following relations (1) and (2) in terms of the oxides. Thereby, thermal damages to an organic element or an organic material contained in the electronic component can be reduced and an electronic component having a glass bonding layer of high reliability can be produced efficiently.Type: ApplicationFiled: July 25, 2013Publication date: July 2, 2015Inventors: Takashi Naito, Shinichi Tachizono, Kei Yoshimura, Yuji Hashiba, Motomune Kodama, Masanori Miyagi, Takuya Aoyagi, Yuichi Sawai, Tadashi Fujieda, Takeshi Tsukamoto, Hajime Murakami
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Publication number: 20150028333Abstract: A metal matrix composite having high corrosion resistance even if the coating film deposit amount is low is obtained. A metal matrix composite includes a metal or alloy substrate coated with a molten transition metal oxide glass, wherein the transition metal oxide glass has an n-type polarity. Further, a method for producing a metal matrix composite includes a step of applying a paste containing a transition metal oxide glass, an organic binder, and an organic solvent onto the surface of a metal or alloy substrate, and a step of forming a glass coating film on the substrate by heating to and maintaining a temperature equal to or higher than the softening point of the transition metal oxide glass after the application step, wherein the transition metal oxide glass has an n-type polarity.Type: ApplicationFiled: January 15, 2013Publication date: January 29, 2015Applicant: HITACHI, LTD.Inventors: Tadashi Fujieda, Takashi Naito, Takuya Aoyagi, Yuichi Sawai