Patents by Inventor Masato Shimura
Masato Shimura 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: 9696592Abstract: In order to avoid generation of black unevenness caused by the water intrusion into a liquid crystal display device, there is to provide a liquid crystal display device including a display area and a terminal portion, in which a TFT substrate with an organic passivation film formed and an opposite substrate are adhered to each other by a seal portion and a liquid crystal is enclosed there, wherein in the seal portion of the TFT substrate, a groove-shaped through-hole is formed in the organic passivation film to surround the display area, a water absorption layer formed of the same material in the same process as that of the organic passivation film is formed within the groove-shaped through-hole, and the water absorption layer is not covered with the inorganic insulating film.Type: GrantFiled: August 4, 2015Date of Patent: July 4, 2017Assignee: Japan Display Inc.Inventors: Tomonori Nishino, Masato Shimura, Tomokazu Ishikawa, Yuki Kuramoto, Satoshi Hashimoto
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Publication number: 20170090257Abstract: In a high-resolution liquid crystal display device, measures against display unevenness caused by generation of a region where no alignment film is applied are provided. A liquid crystal display device includes a pixel formed between a scanning line and a video signal line. The pixel includes a TFT, a pixel electrode, and a contact hole connecting the TFT and the pixel electrode. The contact hole is formed in an insulation film formed between the pixel electrode and the TFT. Assuming that a horizontal pitch of the video signal line is ph and a horizontal diameter of the contact hole is dh, ph is 26 ?m or less and s/ph is 0.73 or more where s=ph?dh. A tapered angle of a sidewall of the contact hole is 53 degrees or less. A thickness of an alignment film over the pixel electrode is 110 nm or more.Type: ApplicationFiled: August 24, 2016Publication date: March 30, 2017Applicant: Japan Display Inc.Inventors: Masato SHIMURA, Shunsuke Yuge, Hiroshi Miyairi, Tomokazu Ishikawa, Tomonori Nishino
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Publication number: 20160349561Abstract: A liquid crystal display device has a liquid crystal display panel that includes a thin-film transistor (TFT) substrate having pixels formed thereon in a matrix pattern and a counter substrate, the two substrates having liquid crystal sandwiched therebetween to constitute a display area having a periphery encircled by a frame area. The display area has a first axis and a second axis perpendicular to the first axis. The liquid crystal display panel is curved along the first axis. The gap between the TFT substrate and the counter substrate is determined by columnar spacers formed on the counter substrate in a manner corresponding to positions of a black matrix over the counter substrate. The center of each of the columnar spacers is displaced in the first axis direction from the center of each of the corresponding positions of the black matrix.Type: ApplicationFiled: May 19, 2016Publication date: December 1, 2016Inventors: Hideki SHIINA, Junko NAGASAWA, Masato SHIMURA
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Publication number: 20160161778Abstract: There is achieved a liquid crystal display device having a smaller picture frame region and a seal part of improved reliability. A liquid crystal display device includes a TFT substrate having a display region and a terminal region and formed with an organic passivation film, a counter substrate attached to the TFT substrate through a seal part, and a liquid crystal contained inside the seal part. A hole is formed at a predetermined pitch on the organic passivation film of the TFT substrate corresponding to the seal part when viewed on a plane. When the hole is viewed on a plane, a shortest distance from the hole to the hole is four micrometers or greater and 12 micrometers or less at a height of h1=0.9×h2 from a bottom face of the hole, where a depth of the hole is defined as h2.Type: ApplicationFiled: December 3, 2015Publication date: June 9, 2016Inventors: Tomonori NISHINO, Masato SHIMURA, Tomokazu ISHIKAWA, Yuki KURAMOTO, Satoshi HASHIMOTO
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Publication number: 20160041413Abstract: In order to avoid generation of black unevenness caused by the water intrusion into a liquid crystal display device, there is to provide a liquid crystal display device including a display area and a terminal portion, in which a TFT substrate with an organic passivation film formed and an opposite substrate are adhered to each other by a seal portion and a liquid crystal is enclosed there, wherein in the seal portion of the TFT substrate, a groove-shaped through-hole is formed in the organic passivation film to surround the display area, a water absorption layer formed of the same material in the same process as that of the organic passivation film is formed within the groove-shaped through-hole, and the water absorption layer is not covered with the inorganic insulating film.Type: ApplicationFiled: August 4, 2015Publication date: February 11, 2016Inventors: Tomonori NISHINO, Masato Shimura, Tomokazu Ishikawa, Yuki Kuramoto, Satoshi Hashimoto
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Publication number: 20150378196Abstract: To improve the reliability of a liquid crystal display device, a liquid crystal display device includes a first substrate having a first surface, a second substrate having a second surface opposing the first surface of the first substrate, a liquid crystal layer arranged between the first substrate and the second substrate, and a sealing section that is provided along a line (a first virtual line) surrounding a periphery of the liquid crystal layer and adhesively fixes the first substrate and the second substrate. The sealing section includes a member (a first member) extending in a zigzag manner along the line and a sealing material arranged on both adjacent sides of the member and continuously surrounding a periphery of the liquid crystal layer.Type: ApplicationFiled: June 26, 2015Publication date: December 31, 2015Inventors: Takahiro OCHIAI, Satoshi Hashimoto, Masato Shimura, Shunsuke Yuge, Tomoya Sugano
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Patent number: 9128330Abstract: A liquid crystal display device includes a bank on a first substrate and surrounding an image display area, a first alignment film on the first substrate, a second alignment film on a second substrate, and a sealing member to seal the liquid crystal material between the first and the second alignment films. The bank has a shape in which a slope of an inside surface standing from an inner peripheral lower end on a side of the image display area is steeper than a slope of an outside surface standing from an outer peripheral lower end on an opposite side to the image display area. The first alignment film contacts the inside surface of the bank and is provided in the image display area. The sealing member passes over the outside surface of the bank in a direction toward the inside surface and overlaps the bank.Type: GrantFiled: August 2, 2013Date of Patent: September 8, 2015Assignee: Japan Display Inc.Inventors: Tomokazu Ishikawa, Masato Shimura
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Publication number: 20140036212Abstract: A liquid crystal display device includes a bank on a first substrate and surrounding an image display area, a first alignment film on the first substrate, a second alignment film on a second substrate, and a sealing member to seal the liquid crystal material between the first and the second alignment films. The bank has a shape in which a slope of an inside surface standing from an inner peripheral lower end on a side of the image display area is steeper than a slope of an outside surface standing from an outer peripheral lower end on an opposite side to the image display area. The first alignment film contacts the inside surface of the bank and is provided in the image display area. The sealing member passes over the outside surface of the bank in a direction toward the inside surface and overlaps the bank.Type: ApplicationFiled: August 2, 2013Publication date: February 6, 2014Applicant: Japan Display Inc.Inventors: Tomokazu ISHIKAWA, Masato SHIMURA
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Patent number: 8599325Abstract: A liquid crystal display device includes a TFT substrate with gate lines and drain lines, and pixel electrodes each formed in a region surrounded by the gate lines and drain lines. Protrusions are formed below the gate lines, each of the protrusions having an upper surface and at least one inclined side surface. A gate insulating film is formed over the gate lines, a semiconductor layer formed on the gate insulating film, and drain electrodes formed and source electrodes formed over the semiconductor layer. Channel portions are defined by the space between the drain electrodes and the source electrodes, each of the channel portions being formed covering the upper surface and at least one of the at least one inclined side surface of one of the protrusions, the pixel and source electrode being in contact with each other on at least one inclined side surface of the protrusion.Type: GrantFiled: May 22, 2013Date of Patent: December 3, 2013Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Jun Gotoh, Hirotaka Imayama, Shinichi Komura, Masato Shimura
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Publication number: 20130248898Abstract: A liquid crystal display device includes a TFT substrate with gate lines and drain lines, and pixel electrodes each formed in a region surrounded by the gate lines and drain lines. Protrusions are formed below the gate lines, each of the protrusions having an upper surface and at least one inclined side surface. A gate insulating film is formed over the gate lines, a semiconductor layer formed on the gate insulating film, and drain electrodes formed and source electrodes formed over the semiconductor layer. Channel portions are defined by the space between the drain electrodes and the source electrodes, each of the channel portions being formed covering the upper surface and at least one of the at least one inclined side surface of one of the protrusions, the pixel and source electrode being in contact with each other on at least one inclined side surface of the protrusion.Type: ApplicationFiled: May 22, 2013Publication date: September 26, 2013Applicants: Panasonic Liquid Crystal Display Co., Ltd., Japan Display Inc.Inventors: Jun Gotoh, Hirotaka Imayama, Shinichi Komura, Masato Shimura
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Patent number: 8451418Abstract: A liquid crystal display device having a high definition screen in which a pixel electrode is formed in a region surrounded by a gate line and a drain line, and a trapezoidal protrusion having an upper surface and inclined surfaces is formed below the gate line. Since a TFT is formed over a trapezoidal protrusion and a channel portion is formed over the upper surface and the inclined surfaces of the trapezoidal protrusion, the width of the channel portion can be enlarged compared to that of a channel portion formed over a plane. The pixel electrode is in contact with a source electrode at the inclined surface of the trapezoidal protrusion. This configuration allows the TFT and a contact of the pixel electrode and a source electrode to be formed over part of the trapezoidal protrusion.Type: GrantFiled: October 28, 2011Date of Patent: May 28, 2013Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Jun Gotoh, Hirotaka Imayama, Shinichi Komura, Masato Shimura
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Publication number: 20120105787Abstract: A liquid crystal display device having a high definition screen in which a pixel electrode is formed in a region surrounded by a gate line and a drain line, and a trapezoidal protrusion having an upper surface and inclined surfaces is formed below the gate line. Since a TFT is formed over a trapezoidal protrusion and a channel portion is formed over the upper surface and the inclined surfaces of the trapezoidal protrusion, the width of the channel portion can be enlarged compared to that of a channel portion formed over a plane. The pixel electrode is in contact with a source electrode at the inclined surface of the trapezoidal protrusion. This configuration allows the TFT and a contact of the pixel electrode and a source electrode to be formed over part of the trapezoidal protrusion.Type: ApplicationFiled: October 28, 2011Publication date: May 3, 2012Inventors: Jun GOTOH, Hirotaka Imayama, Shinichi Komura, Masato Shimura
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Patent number: 8077282Abstract: A liquid crystal display device that includes: a liquid crystal display panel configured by a pair of substrates sandwiching therebetween a liquid crystal material with a positive dielectric anisotropy; and a flat-shaped common electrode and a pixel electrode disposed on one of the pair of substrates with an overlay, via an insulator layer, between the common electrode and the pixel electrode when viewed from above. In the liquid crystal display device, the pixel electrode is extended in a first direction, and includes a plurality of comb-like electrode sections aligned in a second direction orthogonal to the first direction, and the comb-like electrode sections of the pixel electrode are varied in width in the second direction for a plurality of times at intervals shorter than a side extending in the first direction.Type: GrantFiled: November 24, 2010Date of Patent: December 13, 2011Assignee: Hitachi Displays, Ltd.Inventors: Masato Shimura, Tohru Sasaki, Toshiki Asakura, Makiko Imabayashi
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Publication number: 20110069270Abstract: A liquid crystal display device that includes: a liquid crystal display panel configured by a pair of substrates sandwiching therebetween a liquid crystal material with a positive dielectric anisotropy; and a flat-shaped common electrode and a pixel electrode disposed on one of the pair of substrates with an overlay, via an insulator layer, between the common electrode and the pixel electrode when viewed from above. In the liquid crystal display device, the pixel electrode is extended in a first direction, and includes a plurality of comb-like electrode sections aligned in a second direction orthogonal to the first direction, and the comb-like electrode sections of the pixel electrode are varied in width in the second direction for a plurality of times at intervals shorter than a side extending in the first direction.Type: ApplicationFiled: November 24, 2010Publication date: March 24, 2011Inventors: Masato Shimura, Tohru Sasaki, Toshiki Asakura, Makiko Imabayashi
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Patent number: 7864282Abstract: A liquid crystal display device that includes: a liquid crystal display panel configured by a pair of substrates sandwiching therebetween a liquid crystal material with a positive dielectric anisotropy; and a flat-shaped common electrode and a pixel electrode disposed on one of the pair of substrates with an overlay, via an insulator layer, between the common electrode and the pixel electrode when viewed from above. In the liquid crystal display device, the pixel electrode is extended in a first direction, and includes a plurality of comb-like electrode sections aligned in a second direction orthogonal to the first direction, and the comb-like electrode sections of the pixel electrode are varied in width in the second direction for a plurality of times at intervals shorter than a side extending in the first direction.Type: GrantFiled: March 28, 2007Date of Patent: January 4, 2011Assignee: Hitachi Displays, Ltd.Inventors: Masato Shimura, Tohru Sasaki, Toshiki Asakura, Makiko Imabayashi
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Patent number: 7714969Abstract: In a liquid crystal display device having a first planar electrode and a second electrode formed on the first electrode with an insulating film in between, the response time of a liquid crystal is made shorter than that in a related art. A liquid crystal display device includes: a first substrate having a first electrode, an insulating film provided in an upper layer than the first electrode, and a second electrode provided in an upper layer than the insulating film; a second substrate; and a liquid crystal sandwiched between the first substrate and the second substrate. The liquid crystal display device drives the liquid crystal by generating an electric field by the first electrode and the second electrode. The second electrode has plural slits closed at both ends, the first electrode is a planar electrode superimposed on the plural slits, and, given that the length of the respective slits is Ls, the length Ls of the respective slits satisfies 12 ?m?Ls?30 ?m, more preferably, 12?m?Ls?20 ?m.Type: GrantFiled: July 9, 2008Date of Patent: May 11, 2010Assignee: Hitachi Displays, Ltd.Inventors: Toshiki Asakura, Masato Shimura, Makiko Imabayashi, Takanori Nakayama
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Publication number: 20090015774Abstract: In a liquid crystal display device having a first planar electrode and a second electrode formed on the first electrode with an insulating film in between, the response time of a liquid crystal is made shorter than that in a related art. A liquid crystal display device includes: a first substrate having a first electrode, an insulating film provided in an upper layer than the first electrode, and a second electrode provided in an upper layer than the insulating film; a second substrate; and a liquid crystal sandwiched between the first substrate and the second substrate. The liquid crystal display device drives the liquid crystal by generating an electric field by the first electrode and the second electrode. The second electrode has plural slits closed at both ends, the first electrode is a planar electrode superimposed on the plural slits, and, given that the length of the respective slits is Ls, the length Ls of the respective slits satisfies 12 ?m?Ls?30 ?m, more preferably, 12?m?Ls?20 ?m.Type: ApplicationFiled: July 9, 2008Publication date: January 15, 2009Inventors: Toshiki Asakura, Masato Shimura, Makiko Imabayashi, Takanori Nakayama
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Publication number: 20070242205Abstract: A liquid crystal display device that includes: a liquid crystal display panel configured by a pair of substrates sandwiching therebetween a liquid crystal material with a positive dielectric anisotropy; and a flat-shaped common electrode and a pixel electrode disposed on one of the pair of substrates with an overlay, via an insulator layer, between the common electrode and the pixel electrode when viewed from above. In the liquid crystal display device, the pixel electrode is extended in a first direction, and includes a plurality of comb-like electrode sections aligned in a second direction orthogonal to the first direction, and the comb-like electrode sections of the pixel electrode are varied in width in the second direction for a plurality of times at intervals shorter than a side extending in the first direction.Type: ApplicationFiled: March 28, 2007Publication date: October 18, 2007Inventors: Masato Shimura, Tohru Sasaki, Toshiki Asakura, Makiko Imabayashi
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Publication number: 20020033908Abstract: Improving low power consumption is provided. A multilayer structure of a first electrode and an organic light-emitting layer plus a second electrode is formed on a liquid crystal-side surface of one substrate of respective substrates that are disposed to oppose each other with a layer of liquid crystals interposed therebetween, featuring that the organic light-emitting layer emits light rays in a way responsive to receipt of a current which is caused to flow between the first electrode and the second electrode.Type: ApplicationFiled: September 18, 2001Publication date: March 21, 2002Inventors: Yuji Mori, Yoshiharu Nagae, Masato Shimura
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Publication number: 20020033666Abstract: The present invention aims at the suppression of the generation of heat in an organic electroluminescent display. To achieve such an object, the organic electroluminescent display includes a transparent substrate, an organic light emitting layer which is formed on a back surface side of the transparent substrate, electric current supply means which makes the electric current flow through the organic light emitting layer, a housing which covers at least the organic light emitting layer and is sealed to the transparent substrate, and heat radiation material in a liquid form which is filled in a space formed between the housing and the transparent substrate.Type: ApplicationFiled: June 21, 2001Publication date: March 21, 2002Inventors: Yuji Mori, Masato Shimura, Yoshiharu Nagae