Patents by Inventor Takuji Imamura
Takuji Imamura 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: 10401996Abstract: A display panel includes: a display functional portion formed of a display functional layer sandwiched between transparent substrates facing each other; and a touch screen portion that includes lower wiring and upper wiring made of a conductive metal material, that includes an interlayer insulating film located between the lower wiring and the upper wiring, and that includes a protective film covering the lower wiring, the upper wiring, and the interlayer insulating film. The lower wiring of the touch screen portion is formed on a surface on an observer side of the transparent substrate on the observer side.Type: GrantFiled: December 22, 2014Date of Patent: September 3, 2019Assignee: Mitsubishi Electric CorporationInventors: Tae Orita, Naoki Nakagawa, Takeshi Ono, Masafumi Agari, Seiichiro Mori, Takashi Miyayama, Takuji Imamura
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Patent number: 9880436Abstract: A liquid crystal display device includes a gate electrode, a first insulating film, an element layer, a first transparent electrode, and a second transparent electrode. The first insulating film includes a part that covers the gate electrode. The element layer is directly disposed on the first insulating film, includes a channel region that faces the gate electrode across the first insulating film, and is made of a transparent oxide. The first transparent electrode is directly disposed on the first insulating film while being separated from the element layer, and has the same metal composition as the metal composition of the element layer. The second transparent electrode forms a storage capacitance with the first transparent electrode by facing the first transparent electrode while being electrically insulated from the first transparent electrode.Type: GrantFiled: November 21, 2016Date of Patent: January 30, 2018Assignee: Mitsubishi Electric CorporationInventors: Yuki Tsuda, Takuji Imamura
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Publication number: 20170176826Abstract: A liquid crystal display device includes a gate electrode, a first insulating film, an element layer, a first transparent electrode, and a second transparent electrode. The first insulating film includes a part that covers the gate electrode. The element layer is directly disposed on the first insulating film, includes a channel region that faces the gate electrode across the first insulating film, and is made of a transparent oxide. The first transparent electrode is directly disposed on the first insulating film while being separated from the element layer, and has the same metal composition as the metal composition of the element layer. The second transparent electrode forms a storage capacitance with the first transparent electrode by facing the first transparent electrode while being electrically insulated from the first transparent electrode.Type: ApplicationFiled: November 21, 2016Publication date: June 22, 2017Applicant: Mitsubishi Electric CorporationInventors: Yuki TSUDA, Takuji IMAMURA
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Patent number: 9645695Abstract: Detection column wires and detection row wires are formed by fine wires made of a light-reflective conductive material. The detection column wires are divided into a plurality of column-direction wire bundles each including a predetermined number of detection column wires electrically connected to one another. The detection row wires are divided into a plurality of row-direction wire bundles each including a predetermined number of detection row wires electrically connected to one another. Reflected light distribution patterns are further provided. The reflected light distribution patterns each include a curved portion that is curved when viewed from a direction perpendicular to a surface of a touch screen, are arranged so that normals to the curved portion are directed towards all directions, and are dispersed so that regions, of curved portions, in which normals are perpendicular to a longitudinal direction of pixels are not aligned with each other in the longitudinal direction of the pixels.Type: GrantFiled: March 7, 2014Date of Patent: May 9, 2017Assignee: Mitsubishi Electric CorporationInventors: Tae Orita, Naoki Nakagawa, Takeshi Ono, Masafumi Agari, Seiichiro Mori, Takashi Miyayama, Takuji Imamura, Tatsuya Nakamura
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Publication number: 20170075461Abstract: A display panel includes: a display functional portion formed of a display functional layer sandwiched between transparent substrates facing each other; and a touch screen portion that includes lower wiring and upper wiring made of a conductive metal material, that includes an interlayer insulating film located between the lower wiring and the upper wiring, and that includes a protective film covering the lower wiring, the upper wiring, and the interlayer insulating film. The lower wiring of the touch screen portion is formed on a surface on an observer side of the transparent substrate on the observer side.Type: ApplicationFiled: December 22, 2014Publication date: March 16, 2017Applicant: Mitsubishi Electric CorporationInventors: Tae ORITA, Naoki NAKAGAWA, Takeshi ONO, Masafumi AGARI, Seiichiro MORI, Takashi MIYAYAMA, Takuji IMAMURA
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Patent number: 9542053Abstract: A touch screen according to the present invention includes a transparent substrate, a first detection electrode formed on the transparent substrate, a second detection electrode disposed to sterically cross the first detection electrode via an interlayer insulating film, and a polarizing plate bonded to cover the second detection electrode. Each of the first detection electrode and the second detection electrode includes, as a repetition unit, thin wire electrodes that incline in different directions and cross each other. The thin wire electrodes are formed of a combination of a plurality of conductive thin wires extending in a direction inclined 10 degrees or less from a transmission axis direction or an absorption axis direction of the polarizing plate.Type: GrantFiled: January 23, 2015Date of Patent: January 10, 2017Assignee: Mitsubishi Electric CorporationInventors: Takeshi Ono, Tatsuya Nakamura, Takuji Imamura, Takashi Miyayama, Tae Orita, Masafumi Agari, Naoki Nakagawa
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Patent number: 9477362Abstract: A touch screen according to a disclosed embodiment may have a small cross capacitance between row-direction wiring and column-direction wiring, and a large change of the cross capacitance when the touch screen is touched by an indication body. A row-direction wiring includes a first portion and a second portion having a smaller wiring width than a wiring width of the first portion. A wiring width of the column-direction wiring is smaller than a length in a row direction of the second portion. The row-direction and column-direction wiring intersect in the second portion, and gaps are formed between the row-direction and column-direction wiring in planar view in an intersection portion. The touch screen further includes floating wiring that fills the gaps in planar view, and the floating wiring is formed in the same layer as the row-direction wiring or the column-direction wiring, and is insulated from both wirings.Type: GrantFiled: August 2, 2013Date of Patent: October 25, 2016Assignee: Mitsubishi Electric CorporationInventors: Takeshi Ono, Naoki Nakagawa, Masafumi Agari, Takahiro Nishioka, Seiichiro Mori, Takashi Miyayama, Takuji Imamura, Tatsuya Nakamura
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Patent number: 9442616Abstract: In an intersecting region of a bundle of wirings in a column direction and a bundle of wirings in a row direction, a column wiring block region arranged with detection column wirings and first floating wirings and a row wiring block region arranged with detection row wirings and second floating wirings are disposed in a staggered manner. The bundle of wirings in the column direction includes a first compensation region arranged with the detection column wirings which connect between the detection column wirings in the column wiring block regions adjacent to each other in a diagonal direction. The bundle of wirings in the row direction includes a second compensation region arranged with the detection row wirings which electrically connect between the detection row wirings in the row wiring block regions adjacent to each other in a diagonal direction.Type: GrantFiled: October 1, 2014Date of Patent: September 13, 2016Assignee: Mitsubishi Electric CorporationInventors: Takuji Imamura, Takeshi Ono, Tatsuya Nakamura, Tae Orita, Masafumi Agari, Naoki Nakagawa
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Patent number: 9395855Abstract: A touchscreen of the present invention is covered by wiring patterns of a row-directional line and a column-directional line being upper and lower two layers. A step height that is produced by an upper electrode riding on a lower electrode when a floating electrode is provided at a region adjacent to the row-directional line and the column-directional line is suppressed.Type: GrantFiled: December 2, 2013Date of Patent: July 19, 2016Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Tatsuya Nakamura, Takuji Imamura, Takeshi Ono, Naoki Nakagawa, Masafumi Agari, Seiichiro Mori, Takashi Miyayama
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Patent number: 9244575Abstract: A touch screen includes a base substrate, a bundle of rectangular wirings in a column direction including a plurality of detection column wirings that are electrically connected in common, and a bundle of rectangular wirings in a row direction including a plurality of detection row wirings that are electrically connected in common, the bundle of wirings being formed on the base substrate. Also, a plurality of block areas obtained by dividing an intersection area in which the bundle of wirings in the column direction and the bundle of wirings in the row direction intersect in a plan view are defined, and only the detection column wiring or only the detection row wiring is provided in each of the block areas.Type: GrantFiled: October 2, 2012Date of Patent: January 26, 2016Assignee: Mitsubishi Electric CorporationInventors: Masafumi Agari, Naoki Nakagawa, Takeshi Ono, Seiichiro Mori, Takashi Miyayama, Takuji Imamura, Tatsuya Nakamura
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Patent number: 9239500Abstract: A TFT array substrate includes a plurality of pixels arranged in a matrix, in which the pixel includes a thin film transistor, a pixel electrode conductively connected to a drain electrode, and a common electrode that is formed opposite the pixel electrode with an insulation film interposed therebetween. In the TFT array substrate, when one of the pixels is focused, the pixel electrode is divided into a plurality of divided pixel electrodes and includes a plurality of branch conductive parts that conductively connect each of the drain electrode and the plurality of divided pixel electrodes, and in plane view, the common electrode is not formed in at least a part of a formation region of the plurality of branch conductive parts.Type: GrantFiled: December 12, 2011Date of Patent: January 19, 2016Assignee: Mitsubishi Electric CorporationInventor: Takuji Imamura
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Publication number: 20150378484Abstract: Detection column wires and detection row wires are formed by fine wires made of a light-reflective conductive material. The detection column wires are divided into a plurality of column-direction wire bundles each including a predetermined number of detection column wires electrically connected to one another. The detection row wires are divided into a plurality of row-direction wire bundles each including a predetermined number of detection row wires electrically connected to one another. Reflected light distribution patterns are further provided. The reflected light distribution patterns each include a curved portion that is curved when viewed from a direction perpendicular to a surface of a touch screen, are arranged so that normals to the curved portion are directed towards all directions, and are dispersed so that regions, of curved portions, in which normals are perpendicular to a longitudinal direction of pixels are not aligned with each other in the longitudinal direction of the pixels.Type: ApplicationFiled: March 7, 2014Publication date: December 31, 2015Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Tae ORITA, Naoki NAKAGAWA, Takeshi ONO, Masafumi AGARI, Seiichiro MORI, Takashi MIYAYAMA, Takuji IMAMURA, Tatsuya NAKAMURA
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Publication number: 20150242013Abstract: A touch screen according to a disclosed embodiment may have a small cross capacitance between row-direction wiring and column-direction wiring, and a large change of the cross capacitance when the touch screen is touched by an indication body. A row-direction wiring includes a first portion and a second portion having a smaller wiring width than a wiring width of the first portion. A wiring width of the column-direction wiring is smaller than a length in a row direction of the second portion. The row-direction and column-direction wiring intersect in the second portion, and gaps are formed between the row-direction and column-direction wiring in planar view in an intersection portion. The touch screen further includes floating wiring that fills the gaps in planar view, and the floating wiring is formed in the same layer as the row-direction wiring or the column-direction wiring, and is insulated from both wirings.Type: ApplicationFiled: August 2, 2013Publication date: August 27, 2015Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Takeshi Ono, Naoki Nakagawa, Masafumi Agari, Takahiro Nishioka, Seiichiro Mori, Takashi Miyayama, Takuji Imamura, Tatsuya Nakamura
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Publication number: 20150227237Abstract: A touch screen according to the present invention includes a transparent substrate, a first detection electrode formed on the transparent substrate, a second detection electrode disposed to sterically cross the first detection electrode via an interlayer insulating film, and a polarizing plate bonded to cover the second detection electrode. Each of the first detection electrode and the second detection electrode includes, as a repetition unit, thin wire electrodes that incline in different directions and cross each other. The thin wire electrodes are formed of a combination of a plurality of conductive thin wires extending in a direction inclined 10 degrees or less from a transmission axis direction or an absorption axis direction of the polarizing plate.Type: ApplicationFiled: January 23, 2015Publication date: August 13, 2015Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Takeshi ONO, Tatsuya NAKAMURA, Takuji IMAMURA, Takashi MIYAYAMA, Tae ORITA, Masafumi AGARI, Naoki NAKAGAWA
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Publication number: 20150116262Abstract: In an intersecting region of a bundle of wirings in a column direction and a bundle of wirings in a row direction, a column wiring block region arranged with detection column wirings and first floating wirings and a row wiring block region arranged with detection row wirings and second floating wirings are disposed in a staggered manner. The bundle of wirings in the column direction includes a first compensation region arranged with the detection column wirings which connect between the detection column wirings in the column wiring block regions adjacent to each other in a diagonal direction. The bundle of wirings in the row direction includes a second compensation region arranged with the detection row wirings which electrically connect between the detection row wirings in the row wiring block regions adjacent to each other in a diagonal direction.Type: ApplicationFiled: October 1, 2014Publication date: April 30, 2015Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Takuji IMAMURA, Takeshi ONO, Tatsuya NAKAMURA, Tae ORITA, Masafumi AGARI, Naoki NAKAGAWA
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Patent number: 8913025Abstract: In a touch screen, the number of dummy column block region patterns is made smaller than the number of plurality of detection block region patterns. The plurality of detection block region pattern are obtained as a result of dividing a crossing region where a column direction wire bunch and a row direction wire bunch cross each other. The dummy column block region patterns are obtained as a result of dividing a crossing region where a dummy column direction wire bunch and a row direction wire bunch cross each other.Type: GrantFiled: January 31, 2013Date of Patent: December 16, 2014Assignee: Mitsubishi Electric CorporationInventors: Takuji Imamura, Tatsuya Nakamura, Seiichiro Mori, Takashi Miyayama, Masafumi Agari, Naoki Nakagawa, Takeshi Ono
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Publication number: 20140152916Abstract: A touchscreen of the present invention is covered by wiring patterns of a row-directional line and a column-directional line being upper and lower two layers. A step height that is produced by an upper electrode riding on a lower electrode when a floating electrode is provided at a region adjacent to the row-directional line and the column-directional line is suppressed.Type: ApplicationFiled: December 2, 2013Publication date: June 5, 2014Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Tatsuya NAKAMURA, Takuji IMAMURA, Takeshi ONO, Naoki NAKAGAWA, Masafumi AGARI, Seiichiro MORI, Takashi MIYAYAMA
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Publication number: 20130194232Abstract: In a touch screen, the number of dummy column block region patterns is made smaller than the number of plurality of detection block region patterns. The plurality of detection block region pattern are obtained as a result of dividing a crossing region where a column direction wire bunch and a row direction wire bunch cross each other. The dummy column block region patterns are obtained as a result of dividing a crossing region where a dummy column direction wire bunch and a row direction wire bunch cross each other.Type: ApplicationFiled: January 31, 2013Publication date: August 1, 2013Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Takuji IMAMURA, Tatsuya NAKAMURA, Seiichiro MORI, Takashi MIYAYAMA, Masafumi AGARI, Naoki NAKAGAWA, Takeshi ONO
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Publication number: 20130082964Abstract: A touch screen includes a base substrate, a bundle of rectangular wirings in a column direction including a plurality of detection column wirings that are electrically connected in common, and a bundle of rectangular wirings in a row direction including a plurality of detection row wirings that are electrically connected in common, the bundle of wirings being formed on the base substrate. Also, a plurality of block areas obtained by dividing an intersection area in which the bundle of wirings in the column direction and the bundle of wirings in the row direction intersect in a plan view are defined, and only the detection column wiring or only the detection row wiring is provided in each of the block areas.Type: ApplicationFiled: October 2, 2012Publication date: April 4, 2013Inventors: Masafumi AGARI, Naoki Nakagawa, Takeshi Ono, Seiichiro Mori, Takashi Miyayama, Takuji Imamura, Tatsuya Nakamura
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Publication number: 20120187405Abstract: A TFT array substrate includes a plurality of pixels arranged in a matrix, in which the pixel includes a thin film transistor, a pixel electrode conductively connected to a drain electrode, and a common electrode that is formed opposite the pixel electrode with an insulation film interposed therebetween. In the TFT array substrate, when one of the pixels is focused, the pixel electrode is divided into a plurality of divided pixel electrodes and includes a plurality of branch conductive parts that conductively connect each of the drain electrode and the plurality of divided pixel electrodes, and in plane view, the common electrode is not formed in at least a part of a formation region of the plurality of branch conductive parts.Type: ApplicationFiled: December 12, 2011Publication date: July 26, 2012Applicant: MITSUBISHI ELECTRIC CORPORATIONInventor: Takuji IMAMURA