Patents by Inventor Saori Sugiyama
Saori Sugiyama 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: 20230408871Abstract: The displacement between a TFT substrate and a counter substrate and the cut of an alignment film caused by a columnar spacer are prevented. A liquid crystal display device includes: a TFT substrate including a scanning line extending in a first direction, a picture signal line extending in a second direction, a pixel electrode formed in a region surrounded by the scanning line and the picture signal line, and a common electrode formed as opposed to the pixel electrode through an insulating film; a counter substrate disposed as opposed to the TFT substrate and having a spacer; and a liquid crystal sandwiched between the substrates. A common metal interconnection is formed to cover the picture signal line or the scanning line, and stacked on the common electrode. A through hole is formed on the common metal interconnection. The tip end of the spacer is disposed inside the through hole.Type: ApplicationFiled: August 15, 2023Publication date: December 21, 2023Inventors: Masateru MORIMOTO, Saori SUGIYAMA, Motoharu MIYAMOTO
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Patent number: 11762244Abstract: The displacement between a TFT substrate and a counter substrate and the cut of an alignment film caused by a columnar spacer are prevented. A liquid crystal display device includes: a TFT substrate including a scanning line extending in a first direction, a picture signal line extending in a second direction, a pixel electrode formed in a region surrounded by the scanning line and the picture signal line, and a common electrode formed as opposed to the pixel electrode through an insulating film; a counter substrate disposed as opposed to the TFT substrate and having a spacer; and a liquid crystal sandwiched between the substrates. A common metal interconnection is formed to cover the picture signal line or the scanning line, and stacked on the common electrode. A through hole is formed on the common metal interconnection. The tip end of the spacer is disposed inside the through hole.Type: GrantFiled: January 3, 2023Date of Patent: September 19, 2023Assignee: Japan Display IncInventors: Masateru Morimoto, Saori Sugiyama, Motoharu Miyamoto
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Publication number: 20230144061Abstract: The displacement between a TFT substrate and a counter substrate and the cut of an alignment film caused by a columnar spacer are prevented. A liquid crystal display device includes: a TFT substrate including a scanning line extending in a first direction, a picture signal line extending in a second direction, a pixel electrode formed in a region surrounded by the scanning line and the picture signal line, and a common electrode formed as opposed to the pixel electrode through an insulating film; a counter substrate disposed as opposed to the TFT substrate and having a spacer; and a liquid crystal sandwiched between the substrates. A common metal interconnection is formed to cover the picture signal line or the scanning line, and stacked on the common electrode. A through hole is formed on the common metal interconnection. The tip end of the spacer is disposed inside the through hole.Type: ApplicationFiled: January 3, 2023Publication date: May 11, 2023Inventors: Masateru MORIMOTO, Saori SUGIYAMA, Motoharu MIYAMOTO
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Patent number: 11567374Abstract: The displacement between a TFT substrate and a counter substrate and the cut of an alignment film caused by a columnar spacer are prevented. A liquid crystal display device includes: a TFT substrate including a scanning line extending in a first direction, a picture signal line extending in a second direction, a pixel electrode formed in a region surrounded by the scanning line and the picture signal line, and a common electrode formed as opposed to the pixel electrode through an insulating film; a counter substrate disposed as opposed to the TFT substrate and having a spacer; and a liquid crystal sandwiched between the substrates. A common metal interconnection is formed to cover the picture signal line or the scanning line, and stacked on the common electrode. A through hole is formed on the common metal interconnection. The tip end of the spacer is disposed inside the through hole.Type: GrantFiled: January 20, 2022Date of Patent: January 31, 2023Assignee: Japan Display Inc.Inventors: Masateru Morimoto, Saori Sugiyama, Motoharu Miyamoto
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Publication number: 20220137444Abstract: The displacement between a TFT substrate and a counter substrate and the cut of an alignment film caused by a columnar spacer are prevented. A liquid crystal display device includes: a TFT substrate including a scanning line extending in a first direction, a picture signal line extending in a second direction, a pixel electrode formed in a region surrounded by the scanning line and the picture signal line, and a common electrode formed as opposed to the pixel electrode through an insulating film; a counter substrate disposed as opposed to the TFT substrate and having a spacer; and a liquid crystal sandwiched between the substrates. A common metal interconnection is formed to cover the picture signal line or the scanning line, and stacked on the common electrode. A through hole is formed on the common metal interconnection. The tip end of the spacer is disposed inside the through hole.Type: ApplicationFiled: January 20, 2022Publication date: May 5, 2022Inventors: Masateru MORIMOTO, Saori SUGIYAMA, Motoharu MIYAMOTO
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Patent number: 11262624Abstract: The displacement between a TFT substrate and a counter substrate and the cut of an alignment film caused by a columnar spacer are prevented. A liquid crystal display device includes: a TFT substrate including a scanning line extending in a first direction, a picture signal line extending in a second direction, a pixel electrode formed in a region surrounded by the scanning line and the picture signal line, and a common electrode formed as opposed to the pixel electrode through an insulating film; a counter substrate disposed as opposed to the TFT substrate and having a spacer; and a liquid crystal sandwiched between the substrates. A common metal interconnection is formed to cover the picture signal line or the scanning line, and stacked on the common electrode. A through hole is formed on the common metal interconnection. The tip end of the spacer is disposed inside the through hole.Type: GrantFiled: June 23, 2020Date of Patent: March 1, 2022Assignee: Japan Display Inc.Inventors: Masateru Morimoto, Saori Sugiyama, Motoharu Miyamoto
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Publication number: 20200319492Abstract: The displacement between a TFT substrate and a counter substrate and the cut of an alignment film caused by a columnar spacer are prevented. A liquid crystal display device includes: a TFT substrate including a scanning line extending in a first direction, a picture signal line extending in a second direction, a pixel electrode formed in a region surrounded by the scanning line and the picture signal line, and a common electrode formed as opposed to the pixel electrode through an insulating film; a counter substrate disposed as opposed to the TFT substrate and having a spacer; and a liquid crystal sandwiched between the substrates. A common metal interconnection is formed to cover the picture signal line or the scanning line, and stacked on the common electrode. A through hole is formed on the common metal interconnection. The tip end of the spacer is disposed inside the through hole.Type: ApplicationFiled: June 23, 2020Publication date: October 8, 2020Inventors: Masateru MORIMOTO, Saori SUGIYAMA, Motoharu MIYAMOTO
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Patent number: 10725345Abstract: The displacement between a TFT substrate and a counter substrate and the cut of an alignment film caused by a columnar spacer are prevented. A liquid crystal display device includes: a TFT substrate including a scanning line extending in a first direction, a picture signal line extending in a second direction, a pixel electrode formed in a region surrounded by the scanning line and the picture signal line, and a common electrode formed as opposed to the pixel electrode through an insulating film; a counter substrate disposed as opposed to the TFT substrate and having a spacer; and a liquid crystal sandwiched between the substrates. A common metal interconnection is formed to cover the picture signal line or the scanning line, and stacked on the common electrode. A through hole is formed on the common metal interconnection. The tip end of the spacer is disposed inside the through hole.Type: GrantFiled: March 9, 2018Date of Patent: July 28, 2020Assignee: Japan Display Inc.Inventors: Masateru Morimoto, Saori Sugiyama, Motoharu Miyamoto
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Patent number: 10180602Abstract: Red pixels (R), blue pixels (B) and green pixels (G) are formed in parallel. First columnar spacers 10 and second columnar spacers 20 are formed on a first substrate. The distance between the first substrate and a second substrate in a normal state is determined by the first columnar spacers 10. The diameter of a light blocking film corresponding to each first columnar spacer 10 is greater than the diameter of a light blocking film corresponding to each second columnar spacer 20. The first columnar spacer 10 is not formed at a boundary between a green pixel (G) and a red pixel (R) or a boundary between a green pixel (G) and a blue pixel (B). The second columnar spacer 20 is formed at a boundary between pixels irrespective of the pixel color. Thus, appropriate color balance can be attained with ease without having a drop in the luminance.Type: GrantFiled: July 3, 2017Date of Patent: January 15, 2019Assignee: Japan Display Inc.Inventors: Saori Sugiyama, Takanori Nakayama, Yuki Kuramoto
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Publication number: 20180196314Abstract: The purpose of the invention is to suppress a color shift when the screen is viewed in an oblique direction. The structure to countermeasure the problem is: A liquid crystal display device comprising; a liquid crystal layer is sealed between a first substrate and a second substrate, a first insulating film including a silicon oxide film (SiO) on the first substrate, a second insulating film including a silicon nitride film (SiN) covering the first insulating film, a third insulating film including a silicon oxide film (SiO) covering the second insulating film, wherein a thickness of the second insulating film is between 190 nm and 270 nm.Type: ApplicationFiled: December 13, 2017Publication date: July 12, 2018Applicant: Japan Display Inc.Inventors: Keiji TAGO, Saori Sugiyama
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Publication number: 20180196297Abstract: The displacement between a TFT substrate and a counter substrate and the cut of an alignment film caused by a columnar spacer are prevented. A liquid crystal display device includes: a TFT substrate including a scanning line extending in a first direction, a picture signal line extending in a second direction, a pixel electrode formed in a region surrounded by the scanning line and the picture signal line, and a common electrode formed as opposed to the pixel electrode through an insulating film; a counter substrate disposed as opposed to the TFT substrate and having a spacer; and a liquid crystal sandwiched between the substrates. A common metal interconnection is formed to cover the picture signal line or the scanning line, and stacked on the common electrode. A through hole is formed on the common metal interconnection. The tip end of the spacer is disposed inside the through hole.Type: ApplicationFiled: March 9, 2018Publication date: July 12, 2018Inventors: Masateru MORIMOTO, Saori SUGIYAMA, Motoharu MIYAMOTO
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Patent number: 10018886Abstract: A liquid crystal display device in which smear error is suppressed and transmittance is uniform is provided. In a liquid crystal display device which includes a plurality of pixels and uses comb-teeth-shaped transparent conductive films 110 as common wirings, the common wirings include mesh-shaped common metal wirings 101v and 101h extending in a vertical direction and a horizontal direction and the comb-teeth-shaped transparent conductive films 110 are connected between adjacent pixels.Type: GrantFiled: February 14, 2018Date of Patent: July 10, 2018Assignee: Japan Display Inc.Inventors: Saori Sugiyama, Yuji Maede, Masateru Morimoto
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Publication number: 20180173069Abstract: A liquid crystal display device in which smear error suppressed and transmittance is uniform is provided. In a liquid crystal display device which includes a plurality of pixels and uses comb-teeth-shaped transparent conductive films 110 as common wirings, the common wirings include mesh-shaped common metal wirings 101v and 101h extending in a vertical direction and a horizontal direction and the comb-teeth-shaped transparent conductive films 110 are connected between adjacent pixels.Type: ApplicationFiled: February 14, 2018Publication date: June 21, 2018Inventors: Saori SUGIYAMA, Yuji MAEDE, Masateru MORIMOTO
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Patent number: 9946131Abstract: A liquid crystal display device in which smear error is suppressed and transmittance is uniform is provided. In a liquid crystal display device which includes a plurality of pixels and uses comb-teeth-shaped transparent conductive films 110 as common wirings, the common wirings include mesh-shaped common metal wirings 101v and 101h extending in a vertical direction and a horizontal direction and the comb-teeth-shaped transparent conductive films 110 are connected between adjacent pixels.Type: GrantFiled: March 21, 2017Date of Patent: April 17, 2018Assignee: Japan Display Inc.Inventors: Saori Sugiyama, Yuji Maede, Masateru Morimoto
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Patent number: 9921445Abstract: To provide a liquid crystal display device capable of controlling deterioration of contrast even in the case where an opening is formed in an organic flattened film and the film has unevenness. In the liquid crystal display device that includes a TFT substrate, a CF substrate, and liquid crystal sandwiched between the TFT substrate and the CF substrate and that drives the liquid crystal with a lateral electric field, the TFT substrate has the organic flattened film in which a through hole for contacting a source electrode of the TFT and a pixel electrode and a sectional shape of the through hole is asymmetrical between a side on which the pixel electrode extends and the other side.Type: GrantFiled: March 23, 2017Date of Patent: March 20, 2018Assignee: Japan Display Inc.Inventors: Hiroaki Komatsu, Takanori Nakayama, Saori Sugiyama
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Patent number: 9841638Abstract: A liquid crystal display device having 2-pixel multi-domain type pixels, in which columnar spacers are disposed in optimal positions. Each of plural video lines has a first portion in which an acute-angled crossing angle of two crossing angles crossing each of scanning lines becomes a positive angle in a clockwise direction from each of the scanning lines, and a second portion in which an acute-angled crossing angle of the two crossing angles crossing each of scanning lines becomes a negative angle in the clockwise direction from each of the scanning lines. The first and second portions are alternately disposed so as to hold the scanning line between them.Type: GrantFiled: August 23, 2016Date of Patent: December 12, 2017Assignee: JAPAN DISPLAY INC.Inventors: Hiroaki Komatsu, Saori Sugiyama
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Publication number: 20170299910Abstract: Red pixels (R), blue pixels (B) and green pixels (G) are formed in parallel. First columnar spacers 10 and second columnar spacers 20 are formed on a first substrate. The distance between the first substrate and a second substrate in a normal state is determined by the first columnar spacers 10. The diameter of a light blocking film corresponding to each first columnar spacer 10 is greater than the diameter of a light blocking film corresponding to each second columnar spacer 20. The first columnar spacer 10 is not formed at a boundary between a green pixel (G) and a red pixel (R) or a boundary between a green pixel (G) and a blue pixel (B). The second columnar spacer 20 is formed at a boundary between pixels irrespective of the pixel color. Thus, appropriate color balance can be attained with ease without having a drop in the luminance.Type: ApplicationFiled: July 3, 2017Publication date: October 19, 2017Inventors: Saori SUGIYAMA, Takanori NAKAYAMA, Yuki KURAMOTO
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Patent number: 9759955Abstract: A liquid crystal display device includes: a TFT substrate including a TFT, an organic passivation film formed to cover the TFT, and an alignment film; and a counter substrate including a spacer and an alignment film. The TFT substrate and the counter substrate are bonded with a sealing material in a seal portion, with a liquid crystal interposed between the two substrates. A wall-like structure is formed in the seal portion of the counter substrate, in a direction parallel to a side of the counter substrate. A concave portion of the organic passivation film is formed at a position corresponding to the wall-like structure of the TFT substrate, in a direction parallel to the side of the TFT substrate. With this structure, a gap between the wall-like structure and the TFT substrate is increased to facilitate the movement of the sealing material before curing, to form the sealing material uniformly.Type: GrantFiled: July 24, 2014Date of Patent: September 12, 2017Assignee: Japan Display Inc.Inventors: Tomokazu Ishikawa, Yuki Kuramoto, Saori Sugiyama
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Patent number: 9726938Abstract: Red pixels (R), blue pixels (B) and green pixels (G) are formed in parallel. First columnar spacers 10 and second columnar spacers 20 are formed on a first substrate. The distance between the first substrate and a second substrate in a normal state is determined by the first columnar spacers 10. The diameter of a light blocking film corresponding to each first columnar spacer 10 is greater than the diameter of a light blocking film corresponding to each second columnar spacer 20. The first columnar spacer 10 is not formed at a boundary between a green pixel (G) and a red pixel (R) or a boundary between a green pixel (G) and a blue pixel (B). The second columnar spacer 20 is formed at a boundary between pixels irrespective of the pixel color. Thus, appropriate color balance can be attained with ease without having a drop in the luminance.Type: GrantFiled: October 13, 2015Date of Patent: August 8, 2017Assignee: Japan Display Inc.Inventors: Saori Sugiyama, Takanori Nakayama, Yuki Kuramoto
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Publication number: 20170205678Abstract: A liquid crystal display device in which smear error is suppressed and transmittance is uniform is provided. In a liquid crystal display device which includes a plurality of pixels and uses comb-teeth-shaped transparent conductive films 110 as common wirings, the common wirings include mesh-shaped common metal wirings 101v and 101h extending in a vertical direction and a horizontal direction and the comb-teeth-shaped transparent conductive films 110 are connected between adjacent pixels.Type: ApplicationFiled: March 21, 2017Publication date: July 20, 2017Inventors: Saori SUGIYAMA, Yuji MAEDE, Masateru MORIMOTO