Patents by Inventor Akane Murakami
Akane Murakami 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: 8294152Abstract: An electronic circuit formed on an insulating substrate and having thin-film transistors (TFTs) comprising semiconductor layers. The thickness of the semiconductor layer is less than 1500 ?, e.g., between 100 and 750 ?. A first layer consisting mainly of titanium and nitrogen is formed on the semiconductor layer. A second layer consisting of aluminum is formed on top of the first layer. The first and second layers are patterned into conductive interconnects. The bottom surface of the second layer is substantially totally in intimate contact with the first layer. The interconnects have good contacts with the semiconductor layer.Type: GrantFiled: February 15, 2011Date of Patent: October 23, 2012Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Minoru Miyazaki, Akane Murakami, Baochun Cui, Mutsuo Yamamoto
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Publication number: 20110133201Abstract: An electronic circuit formed on an insulating substrate and having thin-film transistors (TFTs) comprising semiconductor layers. The thickness of the semiconductor layer is less than 1500 ?, e.g., between 100 and 750 ?. A first layer consisting mainly of titanium and nitrogen is formed on the semiconductor layer. A second layer consisting of aluminum is formed on top of the first layer. The first and second layers are patterned into conductive interconnects. The bottom surface of the second layer is substantially totally in intimate contact with the first layer. The interconnects have good contacts with the semiconductor layer.Type: ApplicationFiled: February 15, 2011Publication date: June 9, 2011Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Minoru MIYAZAKI, Akane MURAKAMI, Baochun CUI, Mutsuo YAMAMOTO
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Patent number: 7897972Abstract: An electronic circuit formed on an insulating substrate and having thin-film transistors (TFTs) comprising semiconductor layers. The thickness of the semiconductor layer is less than 1500 ?, e.g., between 100 and 750 ?. A first layer consisting mainly of titanium and nitrogen is formed on the semiconductor layer. A second layer consisting of aluminum is formed on top of the first layer. The first and second layers are patterned into conductive interconnects. The bottom surface of the second layer is substantially totally in intimate contact with the first layer. The interconnects have good contacts with the semiconductor layer.Type: GrantFiled: June 2, 2009Date of Patent: March 1, 2011Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Minoru Miyazaki, Akane Murakami, Baochun Cui, Mutsuo Yamamoto
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Publication number: 20090236607Abstract: An electronic circuit formed on an insulating substrate and having thin-film transistors (TFTs) comprising semiconductor layers. The thickness of the semiconductor layer is less than 1500 ?, e.g., between 100 and 750 ?. A first layer consisting mainly of titanium and nitrogen is formed on the semiconductor layer. A second layer consisting of aluminum is formed on top of the first layer. The first and second layers are patterned into conductive interconnects. The bottom surface of the second layer is substantially totally in intimate contact with the first layer. The interconnects have good contacts with the semiconductor layer.Type: ApplicationFiled: June 2, 2009Publication date: September 24, 2009Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Minoru MIYAZAKI, Akane MURAKAMI, Baochun CUI, Mutsuo YAMAMOTO
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Patent number: 7547916Abstract: An electronic circuit formed on an insulating substrate and having thin-film transistors (TFTs) comprising semiconductor layers. The thickness of the semiconductor layer is less than 1500 ?, e.g., between 100 and 750 ?. A first layer consisting mainly of titanium and nitrogen is formed on the semiconductor layer. A second layer consisting of aluminum is formed on top of the first layer. The first and second layers are patterned into conductive interconnects. The bottom surface of the second layer is substantially totally in intimate contact with the first layer. The interconnects have good contacts with the semiconductor layer.Type: GrantFiled: June 7, 2006Date of Patent: June 16, 2009Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Minoru Miyazaki, Akane Murakami, Baochun Cui, Mutsuo Yamamoto
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Publication number: 20070012923Abstract: An electronic circuit formed on an insulating substrate and having thin-film transistors (TFTs) comprising semiconductor layers. The thickness of the semiconductor layer is less than 1500 ?, e.g., between 100 and 750 ?. A first layer consisting mainly of titanium and nitrogen is formed on the semiconductor layer. A second layer consisting of aluminum is formed on top of the first layer. The first and second layers are patterned into conductive interconnects. The bottom surface of the second layer is substantially totally in intimate contact with the first layer. The interconnects have good contacts with the semiconductor layer.Type: ApplicationFiled: June 7, 2006Publication date: January 18, 2007Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Minoru Miyazaki, Akane Murakami, Baochun Cui, Mutsuo Yamamoto
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Patent number: 7105898Abstract: An electronic circuit formed on an insulating substrate and having thin-film transistors (TFTs) comprising semiconductor layers. The thickness of the semiconductor layer is less than 1500 ?, e.g., between 100 and 750 ?. A first layer consisting mainly of titanium and nitrogen is formed on the semiconductor layer. A second layer consisting of aluminum is formed on top of the first layer. The first and second layers are patterned into conductive interconnects. The bottom surface of the second layer is substantially totally in intimate contact with the first layer. The interconnects have good contacts with the semiconductor layer.Type: GrantFiled: December 28, 2004Date of Patent: September 12, 2006Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Minoru Miyazaki, Akane Murakami, Baochun Cui, Mutsuo Yamamoto
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Patent number: 7061016Abstract: An electronic circuit formed on an insulating substrate and having thin-film transistors (TFTs) comprising semiconductor layers. The thickness of the semiconductor layer is less than 1500 ?, e.g., between 100 and 750 ?. A first layer consisting mainly of titanium and nitrogen is formed on the semiconductor layer. A second layer consisting of aluminum is formed on top of the first layer. The first and second layers are patterned into conductive interconnects. The bottom surface of the second layer is substantially totally in intimate contact with the first layer. The interconnects have good contacts with the semiconductor layer.Type: GrantFiled: August 15, 2003Date of Patent: June 13, 2006Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Minoru Miyazaki, Akane Murakami, Baochun Cui, Mutsuo Yamamoto
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Patent number: 7045399Abstract: An electronic circuit formed on an insulating substrate and having thin-film transistors (TFTs) comprising semiconductor layers. The thickness of the semiconductor layers is less than 1500 ?, e.g., between 100 and 750 ?. A first layer consisting mainly of titanium and nitrogen is formed on the semiconductor layer. A second layer consisting aluminum is formed on top of the first layer. The first and second layers are patterned into conductive interconnects. The bottom surface of the second layer is substantially totally in intimate contact with the first layer. The interconnects have good contacts with the semiconductor layer.Type: GrantFiled: July 17, 2003Date of Patent: May 16, 2006Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Minoru Miyazaki, Akane Murakami, Baochun Cui, Mutsuo Yamamoto
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Publication number: 20050145847Abstract: An electronic circuit formed on an insulating substrate and having thin-film transistors (TFTs) comprising semiconductor layers. The thickness of the semiconductor layer is less than 1500 ?, e.g., between 100 and 750 ?. A first layer consisting mainly of titanium and nitrogen is formed on the semiconductor layer. A second layer consisting of aluminum is formed on top of the first layer. The first and second layers are patterned into conductive interconnects. The bottom surface of the second layer is substantially totally in intimate contact with the first layer. The interconnects have good contacts with the semiconductor layer.Type: ApplicationFiled: December 28, 2004Publication date: July 7, 2005Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Minoru Miyazaki, Akane Murakami, Baochun Cui, Mutsuo Yamamoto
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Patent number: 6784453Abstract: In the production of thin film transistor (TFT), a gate insulating film is formed to cover an active layer, a titanium nitride film is formed on the gate insulating film, and an aluminum film used as the gate electrode is formed on the titanium nitride film. The resulted configuration prevents the etching of the aluminum film from the insulating film side even if the etchant of aluminum enters the recessed portion at the edge of the active layer during the patterning of the gate electrode. Also in the anodizing process, when an oxide film is formed on the surface of the aluminum film, the oxidation of aluminum from the gate insulating film side is prevented even when the electrolyte solution enters the recessed portion at the edge of the active layer.Type: GrantFiled: January 6, 2003Date of Patent: August 31, 2004Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Minoru Miyazaki, Akane Murakami, Satoshi Teramoto
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Publication number: 20040051102Abstract: An electronic circuit formed on an insulating substrate and having thin-film transistors (TFTs) comprising semiconductor layers. The thickness of the semiconductor layers is less than 1500 Å, e.g., between 100 and 750 Å. A first layer consisting mainly of titanium and nitrogen is formed on the semiconductor layer. A second layer consisting aluminum is formed on top of the first layer. The first and second layers are patterned into conductive interconnects. The bottom surface of the second layer is substantially totally in intimate contact with the first layer. The interconnects have good contacts with the semiconductor layer.Type: ApplicationFiled: August 15, 2003Publication date: March 18, 2004Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Minoru Miyazaki, Akane Murakami, Baochun Cui, Mutsuo Yamamoto
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Publication number: 20040023445Abstract: An electronic circuit formed on an insulating substrate and having thin-film transistors (TFTs) comprising semiconductor layers. The thickness of the semiconductor layers is less than 1500 Å, e.g., between 100 and 750 Å. A first layer consisting mainly of titanium and nitrogen is formed on the semiconductor layer. A second layer consisting aluminum is formed on top of the first layer. The first and second layers are patterned into conductive interconnects. The bottom surface of the second layer is substantially totally in intimate contact with the first layer. The interconnects have good contacts with the semiconductor layer.Type: ApplicationFiled: July 17, 2003Publication date: February 5, 2004Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Minoru Miyazaki, Akane Murakami, Baochun Cui, Mutsuo Yamamoto
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Patent number: 6608353Abstract: An electronic circuit formed on an insulating substrate and having thin-film transistors (TFTs) comprising semiconductor layers. The thickness of the semiconductor layer is less than 1500 Å, e.g., between 100 and 750 Å. A first layer consisting mainly of titanium and nitrogen is formed on the semiconductor layer. A second layer consisting of aluminum is formed on top of the first layer. The first and second layers are patterned into conductive interconnects. The bottom surface of the second layer is substantially totally in intimate contact with the first layer. The interconnects have good contacts with the semiconductor layer.Type: GrantFiled: July 12, 2002Date of Patent: August 19, 2003Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Minoru Miyazaki, Akane Murakami, Baochun Cui, Mutsuo Yamamoto
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Publication number: 20030132482Abstract: In the production of thin film transistor (TFT), a gate insulating film is formed to cover an active layer, a titanium nitride film is formed on the gate insulating film, and an aluminum film used as the gate electrode is formed on the titanium nitride film. The resulted configuration prevents the etching of the aluminum film from the insulating film side even if the etchant of aluminum enters the recessed portion at the edge of the active layer during the patterning of the gate electrode. Also in the anodizing process, when an oxide film is formed on the surface of the aluminum film, the oxidation of aluminum from the gate insulating film side is prevented even when the electrolyte solution enters the recessed portion at the edge of the active layer.Type: ApplicationFiled: January 6, 2003Publication date: July 17, 2003Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Minoru Miyazaki, Akane Murakami, Satoshi Teramoto
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Patent number: 6569719Abstract: In the production of thin film transistor (TFT), a gate insulating film is formed to cover an active layer, a titanium nitride film is formed on the gate insulating film, and an aluminum film used as the gate electrode is formed on the titanium nitride film. The resulted configuration prevents the etching of the aluminum film from the insulating film side even if the etchant of aluminum enters the recessed portion at the edge of the active layer during the patterning of the gate electrode. Also in the anodizing process, when an oxide film is formed on the surface of the aluminum film, the oxidation of aluminum from the gate insulating film side is prevented even when the electrolyte solution enters the recessed portion at the edge of the active layer.Type: GrantFiled: February 14, 2001Date of Patent: May 27, 2003Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Minoru Miyazaki, Akane Murakami, Satoshi Teramoto
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Publication number: 20020179969Abstract: An electronic circuit formed on an insulating substrate and having thin-film transistors (TFTs) comprising semiconductor layers. The thickness of the semiconductor layers is less than 1500 Å, e.g., between 100 and 750 Å. A first layer consisting mainly of titanium and nitrogen is formed on the semiconductor layer. A second layer consisting aluminum is formed on top of the first layer. The first and second layers are patterned into conductive interconnects. The bottom surface of the second layer is substantially totally in intimate contact with the first layer. The interconnects have good contacts with the semiconductor layer.Type: ApplicationFiled: July 12, 2002Publication date: December 5, 2002Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Minoru Miyazaki, Akane Murakami, Baochun Cui, Mutsuo Yamamoto
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Patent number: 6448612Abstract: An electronic circuit formed on an insulating substrate and having thin-film transistors (TFTs) comprising semiconductor layers. The thickness of the semiconductor layers is less than 1500 Å, e.g., between 100 and 750 Å. A first layer consisting mainly of titanium and nitrogen is formed on the semiconductor layer. A second layer consisting aluminum is formed on top of the first layer. The first and second layers are patterned into conductive interconnects. The bottom surface of the second layer is substantially totally in intimate contact with the first layer. The interconnects have good contacts with the semiconductor layer.Type: GrantFiled: November 2, 2000Date of Patent: September 10, 2002Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Minoru Miyazaki, Akane Murakami, Baochun Cui, Mutsuo Yamamoto
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Publication number: 20010044196Abstract: In the production of thin film transistor (TFT), a gate insulating film is formed to cover an active layer, a titanium nitride film is formed on the gate insulating film, and an aluminum film used as the gate electrode is formed on the titanium nitride film. The resulted configuration prevents the etching of the aluminum film from the insulating film side even if the etchant of aluminum enters the recessed portion at the edge of the active layer during the patterning of the gate electrode. Also in the anodizing process, when an oxide film is formed on the surface of the aluminum film, the oxidation of aluminum from the gate insulating film side is prevented even when the electrolyte solution enters the recessed portion at the edge of the active layer.Type: ApplicationFiled: February 14, 2001Publication date: November 22, 2001Inventors: Minoru Miyazaki, Akane Murakami, Satoshi Teramoto
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Patent number: 6201281Abstract: In the production of thin film transistor (TFT), a gate insulating film is formed to cover an active layer, a titanium nitride film is formed on the gate insulating film, and an aluminum film used as the gate electrode is formed on the titanium nitride film. The resulted configuration prevents the etching of the aluminum film from the insulating film side even if the etchant of aluminum enters the recessed portion at the edge of the active layer during the patterning of the gate electrode. Also in the anodizing process, when an oxide film is formed on the surface of the aluminum film, the oxidation of aluminum from the gate insulating film side is prevented even when the electrolyte solution enters the recessed portion at the edge of the active layer.Type: GrantFiled: April 19, 1996Date of Patent: March 13, 2001Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Minoru Miyazaki, Akane Murakami, Satoshi Teramoto