Patents by Inventor Mitsugu Tamekawa
Mitsugu Tamekawa 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: 20230371337Abstract: A display device according to an embodiment of the present disclosure comprises a display area arranged with a plurality of pixels including a first pixel containing a first deposition material and a second pixel containing a second deposition material and having the same size as the first pixel and a non-display area located around the display area including a first area adjacent to one side of the display area and a second area adjacent to the other side opposite the one side of the display area. The first area is arranged with a first deposition pattern containing the first deposition material, and the second area is arranged with a second deposition pattern containing the second deposition material and having the same size as the first deposition pattern. The second deposition pattern is not arranged in the first area.Type: ApplicationFiled: May 8, 2023Publication date: November 16, 2023Applicant: Japan Display Inc.Inventors: Sho YANAGISAWA, Mitsugu TAMEKAWA, Kota MAKISHI
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Patent number: 11111572Abstract: A vapor deposition mask includes a frame and a metal film supported by the frame, wherein the metal film includes a mask region arranged with a plurality of pixel opening parts corresponding to a display region of a display device, and an alignment region arranged in a periphery of the mask region, the alignment region includes a first opening part and a plurality of second opening parts arranged in a periphery of the first opening part, and a maximum width of the second opening part is smaller than a maximum width of the first opening part.Type: GrantFiled: November 25, 2019Date of Patent: September 7, 2021Assignee: Japan Display Inc.Inventors: Noriyoshi Kanda, Takeshi Ookawara, Mitsugu Tamekawa
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Publication number: 20200095668Abstract: A vapor deposition mask includes a frame and a metal film supported by the frame, wherein the metal film includes a mask region arranged with a plurality of pixel opening parts corresponding to a display region of a display device, and an alignment region arranged in a periphery of the mask region, the alignment region includes a first opening part and a plurality of second opening parts arranged in a periphery of the first opening part, and a maximum width of the second opening part is smaller than a maximum width of the first opening part.Type: ApplicationFiled: November 25, 2019Publication date: March 26, 2020Inventors: Noriyoshi KANDA, Takeshi OOKAWARA, Mitsugu TAMEKAWA
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Publication number: 20190352765Abstract: A deposition mask according to an embodiment of the present invention includes: a mask main body including a pattern portion formed with a pattern opening, and a frame portion surrounding the pattern portion; a mask frame supporting the frame portion of the mask main body; and an intermediate member having a shape corresponding to the mask frame, the intermediate member being disposed between the mask main body and the mask frame. The mask main body and a first face of the intermediate member are joined together, and the mask frame and a face of the intermediate member on the side opposite to the first face are joined together.Type: ApplicationFiled: July 31, 2019Publication date: November 21, 2019Applicant: Japan Display Inc.Inventors: Keisuke ONO, Atsushi TAKEDA, Tetsuyuki YAMADA, Mototsugu NARIYA, Mitsugu TAMEKAWA, Takeshi OOKAWARA, Naoto HIRASAKA, Taiki WATANABE
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Patent number: 10153455Abstract: A manufacturing method of a display device in an embodiment according to the present invention, the method includes forming a terminal electrode in a terminal part of a first substrate, forming a pixel electrode corresponding to each pixel in a pixel part of the first substrate, forming a first intermediate layer in a region including the terminal electrode of the terminal part, forming an organic layer above the pixel electrode in the pixel part, forming a counter electrode layer above the first substrate including the pixel part and the terminal part, forming a passivation layer above the counter electrode layer, arranging a second substrate opposing the pixel part and bonding the first substrate and the second substrate using a sealing member enclosing the pixel part, and removing the first intermediate layer, the counter electrode layer and the passivation layer in the terminal part.Type: GrantFiled: February 23, 2017Date of Patent: December 11, 2018Assignee: Japan Display Inc.Inventors: Mitsugu Tamekawa, Shiro Sumita
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Publication number: 20170279071Abstract: A manufacturing method of a display device in an embodiment according to the present invention, the method includes forming a terminal electrode in a terminal part of a first substrate, forming a pixel electrode corresponding to each pixel in a pixel part of the first substrate, forming a first intermediate layer in a region including the terminal electrode of the terminal part, forming an organic layer above the pixel electrode in the pixel part, forming a counter electrode layer above the first substrate including the pixel part and the terminal part, forming a passivation layer above the counter electrode layer, arranging a second substrate opposing the pixel part and bonding the first substrate and the second substrate using a sealing member enclosing the pixel part, and removing the first intermediate layer, the counter electrode layer and the passivation layer in the terminal part.Type: ApplicationFiled: February 23, 2017Publication date: September 28, 2017Inventors: Mitsugu TAMEKAWA, Shiro SUMITA
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Patent number: 8564189Abstract: According to one embodiment, an organic EL element has a first electrode on a first substrate, a first carrier transport layer on the first electrode, an emitting layer on the first carrier transport layer, a second carrier transport layer on the emitting layer, a second electrode on the second carrier transport layer, a first heat absorbing layer on the second electrode, the first heat absorbing layer being separated from a center of the second electrode, and a second substrate on the first heat absorbing layer.Type: GrantFiled: February 22, 2011Date of Patent: October 22, 2013Assignee: Japan Display Central Inc.Inventors: Mitsugu Tamekawa, Tetsuo Ishida
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Publication number: 20110291551Abstract: According to one embodiment, an organic EL element has a first electrode on a first substrate, a first carrier transport layer on the first electrode, an emitting layer on the first carrier transport layer, a second carrier transport layer on the emitting layer, a second electrode on the second carrier transport layer, a first heat absorbing layer on the second electrode, the first heat absorbing layer being separated from a center of the second electrode, and a second substrate on the first heat absorbing layer.Type: ApplicationFiled: February 22, 2011Publication date: December 1, 2011Applicant: Toshiba Mobile Display Co., Ltd.Inventors: Mitsugu Tamekawa, Tetsuo Ishida
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Publication number: 20110159625Abstract: An organic EL element includes a pair of electrodes and an emitting layer interposed therebetween. The emitting layer is made of a mixture containing a host material and a dopant material. In the emitting layer, a concentration profile of the dopant material along a thickness direction includes at least two relative maximums or at least two relative minimums.Type: ApplicationFiled: March 7, 2011Publication date: June 30, 2011Inventors: Kazuki KITAMURA, Tetsuo Ishida, Mitsugu Tamekawa
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Patent number: 7928652Abstract: An organic EL element includes a pair of electrodes and an emitting layer interposed therebetween. The emitting layer is made of a mixture containing a host material and a dopant material. In the emitting layer, a concentration profile of the dopant material along a thickness direction includes at least two relative maximums or at least two relative minimums.Type: GrantFiled: July 21, 2006Date of Patent: April 19, 2011Assignee: Toshiba Matsushita Display Technology Co., Ltd.Inventors: Kazuki Kitamura, Tetsuo Ishida, Mitsugu Tamekawa
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Publication number: 20070024185Abstract: An organic EL element includes a pair of electrodes and an emitting layer interposed therebetween. The emitting layer is made of a mixture containing a host material and a dopant material. In the emitting layer, a concentration profile of the dopant material along a thickness direction includes at least two relative maximums or at least two relative minimums.Type: ApplicationFiled: July 21, 2006Publication date: February 1, 2007Inventors: Kazuki KITAMURA, Tetsuo Ishida, Mitsugu Tamekawa