Patents by Inventor Miyako MORIKUBO
Miyako MORIKUBO 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: 20230203054Abstract: An organic compound with a long lifetime and high emission efficiency is provided. An organic compound represented by General Formula (G1) is provided. In the formula, any one of X1 to X4 represents N, another one represents C, and the others represent C or N. Any one of C is bonded to a group represented by General Formula (r1), and the others are bonded to hydrogen (H), an alkyl (R) group, a cycloalkyl (Cy) group, an aryl (Ar) group, or a heteroaryl (Het) group. Ar1 represents an aromatic hydrocarbon, and is fused to an adjacent ring at a given site. When Ar1 represents a benzene ring, the benzene ring includes an Ar group or a Het group. Q and Z represent O or S. Any of R31 to R34 represents a bond to any one of X1 to X4, and the others represent H, an R group, a Cy group, an Ar group, or a Het group. Any one of R35 to R38 represents a polycyclic ring aromatic hydrocarbon group or a Het group, and the others represent H, an R group, a Cy group, an Ar group, or a Het group.Type: ApplicationFiled: December 20, 2022Publication date: June 29, 2023Inventors: Sachiko KAWAKAMI, Yuki HAYASHI, Miyako MORIKUBO, Tomohiro KUBOTA, Hiromitsu KIDO, Tomoya YAMAGUCHI, Hideko YOSHIZUMI, Satoshi SEO
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Patent number: 10020451Abstract: A light-emitting element with high heat resistance and high emission efficiency is provided. A novel heterocyclic compound that can be used in such a light-emitting element is provided. One embodiment of the present invention is a light-emitting element which includes, between a pair of electrodes, a layer containing a first organic compound, a second organic compound, and a light-emitting substance; the first organic compound includes one pyrimidine ring and one ring with a hole-transport skeleton; the second organic compound is an aromatic amine; and the light-emitting substance converts triplet excitation energy into light. A combination of the first organic compound, which includes the one pyrimidine ring and the one ring with the hole-transport skeleton, and the second organic compound, which is the aromatic amine, forms an exciplex.Type: GrantFiled: August 5, 2016Date of Patent: July 10, 2018Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Hideko Inoue, Miyako Morikubo, Naoaki Hashimoto, Hiromi Seo, Satoshi Seo, Miki Kanamoto, Tomoka Nakagawa
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Publication number: 20160343955Abstract: A light-emitting element with high heat resistance and high emission efficiency is provided. A novel heterocyclic compound that can be used in such a light-emitting element is provided. One embodiment of the present invention is a light-emitting element which includes, between a pair of electrodes, a layer containing a first organic compound, a second organic compound, and a light-emitting substance; the first organic compound includes one pyrimidine ring and one ring with a hole-transport skeleton; the second organic compound is an aromatic amine; and the light-emitting substance converts triplet excitation energy into light. A combination of the first organic compound, which includes the one pyrimidine ring and the one ring with the hole-transport skeleton, and the second organic compound, which is the aromatic amine, forms an exciplex.Type: ApplicationFiled: August 5, 2016Publication date: November 24, 2016Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Hideko INOUE, Miyako MORIKUBO, Naoaki HASHIMOTO, Hiromi SEO, Satoshi SEO, Miki KANAMOTO, Tomoka NAKAGAWA
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Publication number: 20160315270Abstract: To provide a novel heterocyclic compound that can be used as a host material in which a light-emitting substance of a light-emitting layer is dispersed. A heterocyclic compound comprising a dibenzo[f,h]quinoxaline ring and two hole-transport skeletons, where the dibenzo[f,h]quinoxaline ring and the two hole-transport skeletons are bonded to an aromatic hydrocarbon group. A heterocyclic compound represented by the following general formula (G1) is provided. Note that in the formula, A1 and A2 each independently represent any of a substituted or unsubstituted carbazole skeleton, a substituted or unsubstituted dibenzofuran skeleton, and a substituted or unsubstituted dibenzothiophen skeleton; B represents a substituted or unsubstituted dibenzo[f,h]quinoxaline skeleton; and Ar represents an arene skeleton having 6 to 13 carbon atoms. A light-emitting element including the heterocyclic compound is provided.Type: ApplicationFiled: July 7, 2016Publication date: October 27, 2016Inventors: Satoshi SEO, Satoko SHITAGAKI, Miyako MORIKUBO, Naoaki HASHIMOTO, Takahiro ISHISONE, Kyoko TAKEDA, Hiromi SEO
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Patent number: 9412953Abstract: A light-emitting element with high heat resistance and high emission efficiency is provided. A novel heterocyclic compound that can be used in such a light-emitting element is provided. One embodiment of the present invention is a light-emitting element which includes, between a pair of electrodes, a layer containing a first organic compound, a second organic compound, and a light-emitting substance; the first organic compound includes one pyrimidine ring and one ring with a hole-transport skeleton; the second organic compound is an aromatic amine; and the light-emitting substance converts triplet excitation energy into light. A combination of the first organic compound, which includes the one pyrimidine ring and the one ring with the hole-transport skeleton, and the second organic compound, which is the aromatic amine, forms an exciplex.Type: GrantFiled: August 2, 2013Date of Patent: August 9, 2016Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Hideko Inoue, Miyako Morikubo, Naoaki Hashimoto, Hiromi Seo, Satoshi Seo, Miki Kanamoto, Tomoka Nakagawa
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Patent number: 9394280Abstract: To provide a novel heterocyclic compound that can be used as a host material in which a light-emitting substance of a light-emitting layer is dispersed. A heterocyclic compound comprising a dibenzo[f,h]quinoxaline ring and two hole-transport skeletons, where the dibenzo[f,h]quinoxaline ring and the two hole-transport skeletons are bonded to an aromatic hydrocarbon group. A heterocyclic compound represented by the following general formula (G1) is provided. Note that in the formula, A1 and A2 each independently represent any of a substituted or unsubstituted carbazole skeleton, a substituted or unsubstituted dibenzofuran skeleton, and a substituted or unsubstituted dibenzothiophen skeleton; B represents a substituted or unsubstituted dibenzo[f,h]quinoxaline skeleton; and Ar represents an arene skeleton having 6 to 13 carbon atoms. A light-emitting element including the heterocyclic compound is provided.Type: GrantFiled: August 29, 2012Date of Patent: July 19, 2016Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Satoshi Seo, Satoko Shitagaki, Miyako Morikubo, Naoaki Hashimoto, Takahiro Ishisone, Kyoko Takeda, Hiromi Seo
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Publication number: 20150060818Abstract: Provided is a novel organic compound that can be used as a host material of a light-emitting layer in which a light-emitting substance is dispersed. The organic compound is represented by General Formula (G1-1). In the formula, A represents a substituted or unsubstituted dibenzo[f,h]quinoxalin-yl group, Ar1 represents a substituent formed by 1 to 4 rings, and n represents 2 or 3, where the ring is a substituted or unsubstituted benzene ring or a substituted or unsubstituted fluorene ring.Type: ApplicationFiled: August 27, 2014Publication date: March 5, 2015Inventors: Yoshimi Ishiguro, Miyako MORIKUBO, Sachiko KAWAKAMI, Hiromi SEO, Tatsuyoshi TAKAHASHI, Satoshi SEO
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Patent number: 8916425Abstract: A seed crystal including mixed phase grains having high crystallinity with a low grain density is formed under a first condition, and a microcrystalline semiconductor film is formed over the seed crystal under a second condition which allows the mixed phase grains in the seed crystal to grow to fill a space between the mixed phase grains. In the first condition, the flow rate of hydrogen is 50 times or greater and 1000 times or less that of a deposition gas containing silicon or germanium, and the pressure in a process chamber is greater than 1333 Pa and 13332 Pa or less. In the second condition, the flow rate of hydrogen is 100 times or greater and 2000 times or less that of a deposition gas containing silicon or germanium, and the pressure in the process chamber is 1333 Pa or greater and 13332 Pa or less.Type: GrantFiled: July 18, 2011Date of Patent: December 23, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Ryota Tajima, Tetsuhiro Tanaka, Takashi Ohtsuki, Ryo Tokumaru, Yuji Egi, Erika Kato, Miyako Morikubo
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Publication number: 20140034931Abstract: A light-emitting element with high heat resistance and high emission efficiency is provided. A novel heterocyclic compound that can be used in such a light-emitting element is provided. One embodiment of the present invention is a light-emitting element which includes, between a pair of electrodes, a layer containing a first organic compound, a second organic compound, and a light-emitting substance; the first organic compound includes one pyrimidine ring and one ring with a hole-transport skeleton; the second organic compound is an aromatic amine; and the light-emitting substance converts triplet excitation energy into light. A combination of the first organic compound, which includes the one pyrimidine ring and the one ring with the hole-transport skeleton, and the second organic compound, which is the aromatic amine, forms an exciplex.Type: ApplicationFiled: August 2, 2013Publication date: February 6, 2014Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Hideko Inoue, Miyako Morikubo, Naoaki Hashimoto, Hiromi Seo, Satoshi Seo, Miki Kanamoto, Tomoka Nakagawa
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Publication number: 20130082591Abstract: To provide a novel heterocyclic compound that can be used as a host material in which a light-emitting substance of a light-emitting layer is dispersed. A heterocyclic compound comprising a dibenzo[f,h]quinoxaline ring and two hole-transport skeletons, where the dibenzo[f,h]quinoxaline ring and the two hole-transport skeletons are bonded to an aromatic hydrocarbon group. A heterocyclic compound represented by the following general formula (G1) is provided. Note that in the formula, A1 and A2 each independently represent any of a substituted or unsubstituted carbazole skeleton, a substituted or unsubstituted dibenzofuran skeleton, and a substituted or unsubstituted dibenzothiophen skeleton; B represents a substituted or unsubstituted dibenzo[f,h]quinoxaline skeleton; and Ar represents an arene skeleton having 6 to 13 carbon atoms. A light-emitting element including the heterocyclic compound is provided.Type: ApplicationFiled: August 29, 2012Publication date: April 4, 2013Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Satoshi Seo, Satoko Shitagaki, Miyako Morikubo, Naoaki Hashimoto, Takahiro Ishisone, Kyoko Takeda, Hiromi Seo
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Publication number: 20130060033Abstract: Provided is a novel heterocyclic compound which has excellent heat resistance and can be used as a host material for a light-emitting substance (a substance emitting fluorescence or a substance emitting phosphorescence). A light-emitting element includes a heterocyclic compound which includes one dibenzo[f,h]quinoxaline ring, one ring having a hole-transport skeleton, and two to eight benzene rings. Note that in the above structure, the molecular weight of the heterocyclic compound is greater than or equal to 564 and less than or equal to 1000.Type: ApplicationFiled: August 30, 2012Publication date: March 7, 2013Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Satoshi SEO, Satoko SHITAGAKI, Hiroki SUZUKI, Kaori OGITA, Tomohiro KUBOTA, Miyako MORIKUBO, Yasushi KITANO
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Publication number: 20120021570Abstract: A seed crystal including mixed phase grains having high crystallinity with a low grain density is formed under a first condition, and a microcrystalline semiconductor film is formed over the seed crystal under a second condition which allows the mixed phase grains in the seed crystal to grow to fill a space between the mixed phase grains. In the first condition, the flow rate of hydrogen is 50 times or greater and 1000 times or less that of a deposition gas containing silicon or germanium, and the pressure in a process chamber is greater than 1333 Pa and 13332 Pa or less. In the second condition, the flow rate of hydrogen is 100 times or greater and 2000 times or less that of a deposition gas containing silicon or germanium, and the pressure in the process chamber is 1333 Pa or greater and 13332 Pa or less.Type: ApplicationFiled: July 18, 2011Publication date: January 26, 2012Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Ryota TAJIMA, Tetsuhiro TANAKA, Takashi OHTSUKI, Ryo TOKUMARU, Yuji EGI, Erika KATO, Miyako MORIKUBO