Patents by Inventor Tsutomu Hiroya

Tsutomu Hiroya 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).

  • Patent number: 9025116
    Abstract: A liquid-crystal display device makes it possible to attach an optical element to a liquid-crystal display panel with high positional accuracy while avoiding or minimizing the enlargement of the picture-frame region (i.e., the non-display region) induced by the formation of markers on the panel and the increase of the fabrication cost. The panel comprises a main substrate, an opposite substrate, and a liquid crystal enclosed in a gap between the main and opposite substrates, wherein a polarizer plate is attached at least to the opposite substrate. Markers for attaching an optical element to the panel are formed at positions that overlap with the polarizer plate in a non-display region on the main or opposite substrate. Alignment direction regulators regulate the alignment of the liquid crystal molecules to a predetermined direction in the vicinities of the markers, allowing light to pass through at least the opposite substrate.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: May 5, 2015
    Assignee: NLT Technologies, Ltd.
    Inventors: Tsutomu Hiroya, Koji Shigemura, Jin Matsushima
  • Patent number: 8968499
    Abstract: To provide a laminating method which achieve high accuracy and high quality in a laminating step of an optical sheet and a display panel. Contact areas between the optical sheet and the sheet holding head are read. At this time, an optical element face of the optical sheet is brought into contact with the sheet holding head, light is irradiated to the contact areas therebetween from a no-optical-element face, and positional information of the optical sheet is read based on the distribution of the reflected light thereof.
    Type: Grant
    Filed: May 10, 2011
    Date of Patent: March 3, 2015
    Assignee: NLT Technologies, Ltd.
    Inventors: Tsutomu Hiroya, Koji Shigemura
  • Patent number: 8791387
    Abstract: To provide a laser cutting method that is capable of cutting the substrates high accurately with high throughput at a low cost. It is a laser cutting method for cutting a laminated substrate that is formed by laminating at least a pair of substrates. The method comprises the steps of: providing a pattern member with a characteristic of absorbing light of a wavelength that transmits each of the substrates, between each of the substrates along a cutting position of the laminated substrate; and irradiating a laser of the wavelength that transmits the substrates along the pattern member, whereby the laminated substrate is cut along the pattern member.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: July 29, 2014
    Assignee: NLT Technologies, Ltd.
    Inventors: Tsutomu Hiroya, Kouji Shigemura
  • Publication number: 20130278850
    Abstract: A liquid-crystal display device makes it possible to attach an optical element to a liquid-crystal display panel with high positional accuracy while avoiding or minimizing the enlargement of the picture-frame region (i.e., the non-display region) induced by the formation of markers on the panel and the increase of the fabrication cost. The panel comprises a main substrate, an opposite substrate, and a liquid crystal enclosed in a gap between the main and opposite substrates, wherein a polarizer plate is attached at least to the opposite substrate. Markers for attaching an optical element to the panel are formed at positions that overlap with the polarizer plate in a non-display region on the main or opposite substrate. Alignment direction regulators regulate the alignment of the liquid crystal molecules to a predetermined direction in the vicinities of the markers, allowing light to pass through at least the opposite substrate.
    Type: Application
    Filed: June 17, 2013
    Publication date: October 24, 2013
    Inventors: Tsutomu HIROYA, Koji SHIGEMURA, Jin MATSUSHIMA
  • Patent number: 8497960
    Abstract: A liquid-crystal display device makes it possible to attach an optical element to a liquid-crystal display panel with high positional accuracy while avoiding or minimizing the enlargement of the picture-frame region (i.e., the non-display region) induced by the formation of markers on the panel and the increase of the fabrication cost. The panel comprises a main substrate, an opposite substrate, and a liquid crystal enclosed in a gap between the main and opposite substrates, wherein a polarizer plate is attached at least to the opposite substrate. Markers for attaching an optical element to the panel are formed at positions that overlap with the polarizer plate in a non-display region on the main or opposite substrate. Alignment direction regulators regulate the alignment of the liquid crystal molecules to a predetermined direction in the vicinities of the markers, allowing light to pass through at least the opposite substrate.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: July 30, 2013
    Assignee: NLT Technologies, Ltd.
    Inventors: Tsutomu Hiroya, Koji Shigemura, Jin Matsushima
  • Patent number: 8482856
    Abstract: An optical element array sheet is provided with: a first area in which an optical element array is arranged that is composed of a plurality of optical elements arranged at a prescribed period, a second area formed at the end of the first area with a surface shape that differs from the first area, and a trough formed at the border of the first area and the second area. The side-wall on the second-area side of the trough is formed inclined with respect to a reference line that extends in the thickness direction of the optical element array with the bottom of the trough as the point of origin.
    Type: Grant
    Filed: March 11, 2009
    Date of Patent: July 9, 2013
    Assignee: NLT Technologies, Ltd.
    Inventors: Tsutomu Hiroya, Koji Shigemura
  • Patent number: 8416287
    Abstract: A display device reduces the image quality degradations by suppressing the effect of the defective alignment regions caused by the spacers while minimizing the aperture ratio lowering, and prevents the image quality change dependent on the observation positions. The display device has a display panel and a lenticular lens. Each unit pixel of the display panel includes the sub-pixel for the left eye and the sub-pixel for the right eye. To keep the pair of substrates at a predetermined gap, spacers are arranged at predetermined positions in the gap. The spacers are stripe-shaped and extended along a direction perpendicular to the image separation axis of the lenticular lens. The spacers are equally overlapped with the sub-pixels for the left eye and those for the right eye. The spacers may be isolated for the respective unit pixels, or the first or second sub-pixels.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: April 9, 2013
    Assignee: NLT Technologies, Ltd.
    Inventors: Tsutomu Hiroya, Shinichi Uehara, Koji Shigemura
  • Patent number: 8325303
    Abstract: A liquid-crystal display device makes it possible to attach an optical element to a liquid-crystal display panel with high positional accuracy while avoiding or minimizing the enlargement of the picture-frame region (i.e., the non-display region) induced by the formation of markers on the panel and the increase of the fabrication cost. The panel comprises a main substrate, an opposite substrate, and a liquid crystal enclosed in a gap between the main and opposite substrates, wherein a polarizer plate is attached at least to the opposite substrate. Markers for attaching an optical element to the panel are formed at positions that overlap with the polarizer plate in a non-display region on the main or opposite substrate. Alignment direction regulators regulate the alignment of the liquid crystal molecules to a predetermined direction in the vicinities of the markers, allowing light to pass through at least the opposite substrate.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: December 4, 2012
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Tsutomu Hiroya, Koji Shigemura, Jin Matsushima
  • Publication number: 20120038857
    Abstract: A liquid-crystal display device makes it possible to attach an optical element to a liquid-crystal display panel with high positional accuracy while avoiding or minimizing the enlargement of the picture-frame region (i.e., the non-display region) induced by the formation of markers on the panel and the increase of the fabrication cost. The panel comprises a main substrate, an opposite substrate, and a liquid crystal enclosed in a gap between the main and opposite substrates, wherein a polarizer plate is attached at least to the opposite substrate. Markers for attaching an optical element to the panel are formed at positions that overlap with the polarizer plate in a non-display region on the main or opposite substrate. Alignment direction regulators regulate the alignment of the liquid crystal molecules to a predetermined direction in the vicinities of the markers, allowing light to pass through at least the opposite substrate.
    Type: Application
    Filed: October 24, 2011
    Publication date: February 16, 2012
    Applicant: NEC LCD TECHNOLOGIES, LTD.
    Inventors: TSUTOMU HIROYA, KOJI SHIGEMURA, JIN MATSUSHIMA
  • Publication number: 20120003434
    Abstract: To provide a laminating method which achieve high accuracy and high quality in a laminating step of an optical sheet and a display panel. Contact areas between the optical sheet and the sheet holding head are read. At this time, an optical element face of the optical sheet is brought into contact with the sheet holding head, light is irradiated to the contact areas therebetween from a no-optical-element face, and positional information of the optical sheet is read based on the distribution of the reflected light thereof.
    Type: Application
    Filed: May 10, 2011
    Publication date: January 5, 2012
    Applicant: NEC LCD TECHNOLOGIES, LTD.
    Inventors: Tsutomu HIROYA, Koji SHIGEMURA
  • Publication number: 20090231715
    Abstract: An optical element array sheet is provided with: a first area in which an optical element array is arranged that is composed of a plurality of optical elements arranged at a prescribed period, a second area formed at the end of the first area with a surface shape that differs from the first area, and a trough formed at the border of the first area and the second area. The side-wall on the second-area side of the trough is formed inclined with respect to a reference line that extends in the thickness direction of the optical element array with the bottom of the trough as the point of origin.
    Type: Application
    Filed: March 11, 2009
    Publication date: September 17, 2009
    Applicant: NEC LCD TECHNOLOGIES, LTD.
    Inventors: Tsutomu HIROYA, Koji SHIGEMURA
  • Publication number: 20090168167
    Abstract: A display device reduces the image quality degradations by suppressing the effect of the defective alignment regions caused by the spacers while minimizing the aperture ratio lowering, and prevents the image quality change dependent on the observation positions. The display device has a display panel and a lenticular lens. Each unit pixel of the display panel includes the sub-pixel for the left eye and the sub-pixel for the right eye. To keep the pair of substrates at a predetermined gap, spacers are arranged at predetermined positions in the gap. The spacers are stripe-shaped and extended along a direction perpendicular to the image separation axis of the lenticular lens. The spacers are equally overlapped with the sub-pixels for the left eye and those for the right eye. The spacers may be isolated for the respective unit pixels, or the first or second sub-pixels.
    Type: Application
    Filed: November 25, 2008
    Publication date: July 2, 2009
    Applicant: NEC LCD TECHNOLOGIES, LTD.
    Inventors: Tsutomu HIROYA, Shinichi Uehara, Koji Shigemura
  • Patent number: 7548297
    Abstract: A cut-out part is formed in the end part of the alignment film of a TFT substrate located on the side of a transfer electrode, and this cut-out part is positioned on the transfer electrode. Furthermore, a sealing member composed of a resin that includes conductive particles is formed on the peripheral edge parts of the alignment film. In this case, the system is devised so that the transfer electrode is covered by the sealing member. Furthermore, the TFT substrate and counter substrate are pasted together by the sealing member, and the transfer electrode of the TFT substrate and the counter electrode of the counter substrate are connected to each other. Subsequently, a liquid crystal layer is sealed between the TFT substrate and the counter substrate to produce a liquid crystal display device. As a result, a liquid crystal display device with a narrow frame and high display quality can be obtained.
    Type: Grant
    Filed: April 13, 2006
    Date of Patent: June 16, 2009
    Assignee: NEC Corporation
    Inventors: Koji Shigemura, Tsutomu Hiroya
  • Patent number: 7525618
    Abstract: A liquid crystal display panel has a drive substrate and an opposing substrate disposed parallel to each other by way of a seal member provided with a liquid crystal injection inlet. A liquid crystal layer is sealed between the two substrates. Apertures are provided in the portion formed on the periphery of the pixel area of the smoothed film that is formed on the surface of the drive substrate, and an orientation film is formed so that at least part of the peripheral edge portion is positioned inside the apertures. Thereby, the liquid crystal injection time can be reduced and the panel can be set in a narrow frame, and the wiring and peripheral drive circuits are not liable to be damaged.
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: April 28, 2009
    Assignee: NEC Corporation
    Inventors: Tsutomu Hiroya, Ken Sumiyoshi, Kouji Shigemura
  • Publication number: 20080284958
    Abstract: A liquid-crystal display device makes it possible to attach an optical element to a liquid-crystal display panel with high positional accuracy while avoiding or minimizing the enlargement of the picture-frame region (i.e., the non-display region) induced by the formation of markers on the panel and the increase of the fabrication cost. The panel comprises a main substrate, an opposite substrate, and a liquid crystal enclosed in a gap between the main and opposite substrates, wherein a polarizer plate is attached at least to the opposite substrate. Markers for attaching an optical element to the panel are formed at positions that overlap with the polarizer plate in a non-display region on the main or opposite substrate. Alignment direction regulators regulate the alignment of the liquid crystal molecules to a predetermined direction in the vicinities of the markers, allowing light to pass through at least the opposite substrate.
    Type: Application
    Filed: April 8, 2008
    Publication date: November 20, 2008
    Applicant: NEC LCD TECHNOLOGIES, LTD.
    Inventors: Tsutomu Hiroya, Koji Shigemura, Jin Matsushima
  • Publication number: 20070241085
    Abstract: To provide a laser cutting method that is capable of cutting the substrates high accurately with high throughput at a low cost. It is a laser cutting method for cutting a laminated substrate that is formed by laminating at least a pair of substrates. The method comprises the steps of: providing a pattern member with a characteristic of absorbing light of a wavelength that transmits each of the substrates, between each of the substrates along a cutting position of the laminated substrate; and irradiating a laser of the wavelength that transmits the substrates along the pattern member, whereby the laminated substrate is cut along the pattern member.
    Type: Application
    Filed: March 23, 2007
    Publication date: October 18, 2007
    Applicant: NEC CORPORATION
    Inventors: Tsutomu Hiroya, Kouji Shigemura
  • Publication number: 20060232740
    Abstract: A cut-out part is formed in the end part of the alignment film of a TFT substrate located on the side of a transfer electrode, and this cut-out part is positioned on the transfer electrode. Furthermore, a sealing member composed of a resin that includes conductive particles is formed on the peripheral edge parts of the alignment film. In this case, the system is devised so that the transfer electrode is covered by the sealing member. Furthermore, the TFT substrate and counter substrate are pasted together by the sealing member, and the transfer electrode of the TFT substrate and the counter electrode of the counter substrate are connected to each other. Subsequently, a liquid crystal layer is sealed between the TFT substrate and the counter substrate to produce a liquid crystal display device. As a result, a liquid crystal display device with a narrow frame and high display quality can be obtained.
    Type: Application
    Filed: April 13, 2006
    Publication date: October 19, 2006
    Inventors: Koji Shigemura, Tsutomu Hiroya
  • Publication number: 20060158595
    Abstract: A liquid crystal display panel has a drive substrate and an opposing substrate disposed parallel to each other by way of a seal member provided with a liquid crystal injection inlet. A liquid crystal layer is sealed between the two substrates. Apertures are provided in the portion formed on the periphery of the pixel area of the smoothed film that is formed on the surface of the drive substrate, and an orientation film is formed so that at least part of the peripheral edge portion is positioned inside the apertures. Thereby, the liquid crystal injection time can be reduced and the panel can be set in a narrow frame, and the wiring and peripheral drive circuits are not liable to be damaged.
    Type: Application
    Filed: January 18, 2006
    Publication date: July 20, 2006
    Applicant: NEC Corporation
    Inventors: Tsutomu Hiroya, Ken Sumiyoshi, Kouji Shigemura