Patents by Inventor Masakazu Shibasaki

Masakazu Shibasaki 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).

  • Publication number: 20210273178
    Abstract: A display device is provided with a display region and a frame region surrounding the display region. The display region includes a light-emitting element layer that includes a plurality of light-emitting elements, a TFT layer provided below the light-emitting element layer to drive the light-emitting elements, and a sealing layer covering the light-emitting element layer. The light-emitting element layer is provided with a plurality of light-emitting layers, and each of the light-emitting layers contains a hindered amine compound and/or a derivative of a hindered amine compound.
    Type: Application
    Filed: September 28, 2018
    Publication date: September 2, 2021
    Inventors: MASANOBU MIZUSAKI, MASAKAZU SHIBASAKI
  • Publication number: 20210028399
    Abstract: Provided is a display device that can retard the degradation of light-emitting elements even when the display device is used in a high temperature environment. A display device—includes a TFT layer, a light-emitting element layer provided with a plurality of light-emitting elements, and a thermal insulation layer that insulates the plurality of light-emitting elements from external heat. The thermal insulation layer is made from a material containing a first resin in which a metal complex compound having an ammonium salt as a ligand is dispersed.
    Type: Application
    Filed: March 30, 2018
    Publication date: January 28, 2021
    Inventors: MASANOBU MIZUSAKI, MASAKAZU SHIBASAKI
  • Patent number: 9128220
    Abstract: A light guiding element has a first principal surface, a second principal surface which opposes the first principal surface, a first lateral surface which intersects with the first principal surface and the second principal surface, and a second lateral surface which opposes the first lateral surface. The light guiding element allows light incoming from the first lateral surface to propagate between the first principal surface and the second principal surface. The light guiding element includes a portion in which a refractive index varies substantially continuously from the first principal surface toward the second principal surface.
    Type: Grant
    Filed: November 25, 2011
    Date of Patent: September 8, 2015
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takashi Ochi, Masakazu Shibasaki, Iori Aoyama, Yuichi Iyama, Katsuhiro Kikuchi
  • Patent number: 9069221
    Abstract: A liquid crystal display device including a first substrate, with a plurality of bus lines formed thereon such that they intersect with each other, and a second substrate facing the first substrate. The device also includes a plurality of pixel regions defined by the bus lines; a thin film transistor formed in each of the pixel regions; a color filter layer formed in each of the pixel regions; and a pixel electrode formed in each of the pixel regions. A liquid crystal layer is provided between the first substrate and the second substrate. The liquid crystal layer is located next to a polymeric structure formed by irradiating a mixture of liquid crystal materials and ultraviolet-curing monomers with ultraviolet light, and a black display is achieved when no voltage or a subthreshold voltage is applied.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: June 30, 2015
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Manabu Sawasaki, Yuichi Inoue, Masakazu Shibasaki, Naoto Kondo, Tetsuya Fujikawa, Takashi Takagi, Tomonori Tanose, Tomoshige Oda, Akira Komorita, Katsunori Misaki, Shiro Hirota
  • Patent number: 8786808
    Abstract: A liquid crystal display including a pair of substrates; a plurality of electrodes formed in a matrix on one of the pair of substrates, wherein each of the plurality of electrodes includes a plurality of stripe-like portions that define a plurality of spaces therebetween; polymer material and liquid crystal between the pair of substrates; and polymer alignment films which are formed on each of the substrates and are affected by light irradiation and cause alignment of the liquid crystal in predetermined directions. The plurality of stripe-like portions extend in at least two different directions which are not parallel to each other.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: July 22, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takahiro Sasaki, Kazutaka Hanaoka, Tsutomu Seino, Yohei Nakanishi, Seiji Tanuma, Kimiaki Nakamura, Yuichi Inoue, Masakazu Shibasaki, Hideaki Tsuda, Yoshio Koike, Yasutoshi Tasaka, Hidefumi Yoshida, Kunihiro Tashiro
  • Patent number: 8755009
    Abstract: A liquid crystal display device, including a pair of substrates, a liquid crystal layer sealed between the pair of substrates, color filters of different colors formed on one of the substrates, and a polymer layer for aligning liquid crystal molecules and formed between the pair of substrates. The pre-tilt angles of the liquid crystal molecules are different among respective pixels where the color filters of different colors are formed.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: June 17, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Katsuhiko Kishida, Yohei Nakanishi, Hideaki Tsuda, Kazutaka Hanaoka, Yuichi Inoue, Masakazu Shibasaki
  • Patent number: 8717517
    Abstract: A liquid crystal display including two substrates arranged opposite to each other; a liquid crystal sealed between the substrates; and a polymer layer for regulating a pretilt angle of liquid crystal molecules and/or tilt directions at a time of driving. One of the substrates has a color filter layer formed on a side of the one substrate, and a plurality of stripe-like electrode patterns are provided on the color filter layer. The patterns are periodically arranged so that when polymerizable components mixed in the liquid crystal layer are polymerized to form the polymer layer while a voltage is applied to the liquid crystal layer between the electrode patterns and a second electrode on the other substrate, liquid crystal molecules in the liquid crystal layer are aligned in the extending directions of stripe-like electrode patterns.
    Type: Grant
    Filed: January 12, 2012
    Date of Patent: May 6, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takahiro Sasaki, Kazutaka Hanaoka, Tsutomu Seino, Yohei Nakanishi, Seiji Tanuma, Kimiaki Nakamura, Yuichi Inoue, Masakazu Shibasaki, Hideaki Tsuda, Yoshio Koike, Yasutoshi Tasaka, Hidefumi Yoshida, Kunihiro Tashiro
  • Patent number: 8654286
    Abstract: The present invention provides a liquid crystal display device which allows an improvement in contrast ratio by compensating retardation given in a liquid crystal layer, even if a retardation layer has an inclined portion, and a desired retardation is varied at the inclined portion. The present invention is a vertical alignment liquid crystal display device, including: a pair of substrates facing each other; a liquid crystal layer disposed between the pair of substrates; a transmissive display region; and a reflective display region, wherein one of the pair of substrates includes a ?/4 retardation layer in the reflective display region, the ?/4 retardation layer protruding towards the liquid crystal layer, the ?/4 retardation layer includes an inclined portion inclined to a flat face of the substrate, and an azimuth of the inclined portion is substantially parallel to a slow axis azimuth of the ?/4 retardation layer.
    Type: Grant
    Filed: September 10, 2008
    Date of Patent: February 18, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yoshito Hashimoto, Hiroyuki Ohgami, Masayuki Soga, Katsuhiro Kikuchi, Masakazu Shibasaki, Yuichi Iyama, Masumi Kubo
  • Publication number: 20130293797
    Abstract: It is an object of the invention to provide a substrate for a liquid crystal display, a liquid crystal display having the same, and a method of manufacturing the same which make it possible to provide a display having high luminance and preferable display characteristics to be used in display sections of information apparatuses and the like. Each pixel is defined by gate bus lines extending in the horizontal direction and drain bus lines extending in the vertical direction. TFTs are formed in the vicinity of intersections between the bus lines, and resin overlap sections for shielding the TFTs from light are formed above the same. No black matrix is formed on a common electrode substrate which is provided in a face-to-face relationship with a TFT substrate, and the bus lines and the resin overlap sections formed on the TFT substrate function as a black matrix.
    Type: Application
    Filed: July 1, 2013
    Publication date: November 7, 2013
    Inventors: Manabu Sawasaki, Yuichi Inoue, Masakazu Shibasaki, Naoto Kondo, Tetsuya Fujikawa, Takashi Takagi, Tomonori Tanose, Tomoshige Oda, Akira Komorita, Katsunori Misaki, Shiro Hirota
  • Patent number: 8563214
    Abstract: The present invention relates to a radiation sensitive resin composition comprising [A] an alkali-soluble resin, [B] a 1,2-quinonediazide compound and [C] a radical trapping agent. The radiation sensitive resin composition can provide an interlayer insulating film which satisfies general requirements for an interlayer insulating film such as high light transmittance and has excellent heat-resistant dimensional stability, heat discoloration resistance and adhesion to a substrate along with the improvement of process efficiency for improving product yield at a high resolution and has excellent storage stability.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: October 22, 2013
    Assignees: Sharp Corporation, JSR Corporation
    Inventors: Katsuhiro Kikuchi, Kentaro Usui, Masakazu Shibasaki, Takashi Ochi, Tatsuro Kato, Kenichi Hamada, Masashi Arai, Megumi Murata, Hideaki Takase
  • Publication number: 20130271713
    Abstract: According to the present invention, provided is a liquid crystal display device in which a polymer layer having a stable alignment regulating force is formed.
    Type: Application
    Filed: October 14, 2011
    Publication date: October 17, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Isamu Miyake, Koichi Miyachi, Tatsuro Kato, Masakazu Shibasaki, Masahiro Shimizu, Kazuhito Matsumoto
  • Patent number: 8558959
    Abstract: A liquid crystal display device including a pair of substrates, defined as a first substrate and a second substrate and a liquid crystal layer sandwiched between the pair of substrates. The device also includes a pixel electrode and an additional electrode formed on the first substrate, and a contact hole that is configured and arranged to connect the pixel electrode and the additional electrode. In certain embodiments, the contact hole is formed at a liquid crystal domain boundary. In other embodiments, an additional contact hole is also provided between the pixel electrode and a second additional electrode, and in such embodiments the contact hole and the additional contact hole are formed within different liquid crystal domains. Further, in certain embodiments, the pixel electrode includes a plurality of pixel electrode slits arranged in a pattern to form a plurality of liquid crystal domains within each pixel.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: October 15, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hiroyasu Inoue, Kenichi Nagaoka, Yuji Nakahata, Yoji Taniguchi, Tetsuya Fujikawa, Yohei Nakanishi, Kazutaka Hanaoka, Yuichi Inoue, Masakazu Shibasaki
  • Publication number: 20130242610
    Abstract: A light guiding element has a first principal surface, a second principal surface which opposes the first principal surface, a first lateral surface which intersects with the first principal surface and the second principal surface, and a second lateral surface which opposes the first lateral surface. The light guiding element allows light incoming from the first lateral surface to propagate between the first principal surface and the second principal surface. The light guiding element includes a portion in which a refractive index varies substantially continuously from the first principal surface toward the second principal surface.
    Type: Application
    Filed: November 25, 2011
    Publication date: September 19, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Takashi OCHI, Masakazu SHIBASAKI, Iori AOYAMA, Yuichi IYAMA, Katsuhiro KIKUCHI
  • Patent number: 8502762
    Abstract: This invention relates to an image processing method for improving the quality of an image to be displayed on a display device and to a liquid-crystal display device using the same, and aims at providing an image processing method for providing wide viewing angle and excellent tonal-intensity viewing angle characteristic and a liquid-crystal display device using the same. Combined together are a higher-luminance pixel to be driven higher in luminance than the luminance data of an image to be displayed and a lower-luminance pixel to be driven lower in luminance than the luminance data, to determine a luminance on the higher-luminance pixel and luminance on the lower-luminance pixel as well as an area ratio of the higher-luminance and lower-luminance pixels in a manner obtaining a luminance nearly equal to a desired luminance based on the luminance data.
    Type: Grant
    Filed: March 30, 2004
    Date of Patent: August 6, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tsuyoshi Kamada, Hidefumi Yoshida, Yoshio Koike, Toshiaki Suzuki, Tetsuya Kobayashi, Yasutoshi Tasaka, Masakazu Shibasaki, Kunihiro Tashiro, Kazuya Ueda, Katsuyoshi Hiraki
  • Publication number: 20130194524
    Abstract: A liquid crystal panel includes a liquid crystal layer that can switch to a light transmitting state and a light scattering state, and lines provided on a portion of the liquid crystal layer on the side opposite to the observation side. The lines are provided with a reflecting portion by which at least a portion of light that entered from the observation side is reflected toward the observation side.
    Type: Application
    Filed: October 4, 2011
    Publication date: August 1, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Yuichi Kita, Katsuhiro Kikuchi, Takashi Ochi, Masakazu Shibasaki, Iori Aoyama, Sayuri Fujiwara, Eiji Satoh, Yasushi Asaoka, Kazuhiro Deguchi
  • Patent number: 8493534
    Abstract: A liquid crystal display device including first and second substrates and a liquid crystal layer therebetween. The device also includes a plurality of gate bus lines, and a plurality of drain bus lines that intersect the gate bus lines, as well as a plurality of pixel regions defined by the gate and drain bus lines. Additionally, the device includes a thin film transistor and a resin color filter layer formed in each of the pixel regions. There is a pixel electrode formed in each of the pixel regions on the resin color filter layer that includes a slit extending in parallel with an edge of the pixel region and a plurality of finer slits diagonally extending from the slit. Finally, the device includes a common electrode formed on the second substrate, and a vertical alignment film applied to each of surfaces of the substrates.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: July 23, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Manabu Sawasaki, Yuichi Inoue, Masakazu Shibasaki, Naoto Kondo, Tetsuya Fujikawa, Takashi Takagi, Tomonori Tanose, Tomoshige Oda, Akira Komorita, Katsunori Misaki, Shiro Hirota
  • Patent number: 8421972
    Abstract: There is provided a liquid crystal display device of high picture quality with high brightness and small display unevenness. A vertical alignment type liquid crystal display device which has a plurality of pixels includes: a first electrode which includes, in each of the plurality of pixels, a plurality of first branch portions extending in a first direction and a plurality of second branch portions extending in a second direction that is different from the first direction; a second electrode disposed so as to oppose the first electrode; and a liquid crystal layer interposed between the first electrode and the second electrode, wherein a width of each of the plurality of first branch portions and the plurality of second branch portions is in a range not less than 1.4 ?m and not more than 8.0 ?m.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: April 16, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hiroyuki Ohgami, Yoshito Hashimoto, Masakazu Shibasaki, Yuichi Iyama, Masumi Kubo, Masayuki Soga
  • Publication number: 20130003001
    Abstract: When radiating light onto a liquid crystal composition containing a photosensitive material, the alignment of liquid crystal molecules is adjusted by applying a voltage to the liquid crystal composition layer, to achieve substantially orderly alignment of the liquid crystal molecules, or the alignment of the liquid crystal molecules is made uniform by adjusting the structure of the liquid crystal display device, or any display defect is driven out of the display area. When radiating light to the liquid crystal composition containing the photosensitive material, the alignment of the liquid crystal molecules can be adjusted so as to achieve substantially orderly alignment of the liquid crystal molecules, and the liquid crystal display device can thus be driven stably.
    Type: Application
    Filed: September 11, 2012
    Publication date: January 3, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Hiroyasu Inoue, Kenichi Nagaoka, Yuji Nakahata, Yoji Taniguchi, Tetsuya Fujikawa, Yohei Nakanishi, Kazutaka Hanaoka, Yuichi Inoue, Masakazu Shibasaki
  • Patent number: 8345199
    Abstract: There is provided a liquid crystal display device of high image quality, which has high brightness and excellent viewing angle characteristics. A liquid crystal display device of the present invention includes a pair of polarizing plates, a first electrode, a second electrode provided so as to oppose the first electrode, and a liquid crystal layer interposed between the first electrode and the second electrode. Each of a plurality of pixels includes a first region and a second region which are separated by a line parallel to or perpendicular to the directions of the transmission axes of the pair of polarizing plates. The first electrode includes, in each of the first region and the second region, a plurality of first branch portions extending in a first direction and a plurality of second branch portions extending in a second direction that is different from the first direction. Each of the plurality of first branch portions in the first region has a first width.
    Type: Grant
    Filed: December 25, 2008
    Date of Patent: January 1, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yoshito Hashimoto, Hiroyuki Ohgami, Masakazu Shibasaki, Masumi Kubo, Yuichi Iyama, Masayuki Soga
  • Patent number: 8339532
    Abstract: An active matrix liquid crystal display device includes: a liquid crystal layer; two substrates sandwiching the liquid crystal layer; and electrodes respectively provided in the two substrates, the electrodes applying voltage across the liquid crystal layer. A first electrode (15) in the substrate including a pixel selecting element (11) has a striped electrode pattern (15c) aligning liquid crystal molecules along a stripe line direction when voltage is applied across the liquid crystal layer. A contact (25h) of the first electrode (15) with the selecting element (11) is formed in a region opposed to, along a film thickness direction, a first region to which a signal liner (GLi) is allocated. This provides a liquid crystal display device in which a contact is made with the pixel electrode having the striped electrode pattern having the periodical arrangement, while alignment disorder of the liquid crystal molecules is not reflected on display.
    Type: Grant
    Filed: March 11, 2008
    Date of Patent: December 25, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hiroshi Yoshida, Yasutoshi Tasaka, Noritaka Ajari, Kohhei Tanaka, Ryohji Yayotani, Keisuke Yoshida, Yoshito Hashimoto, Masayuki Soga, Hiroyuki Ohgami, Masakazu Shibasaki