Patents by Inventor Manabu Sawasaki

Manabu Sawasaki 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: 20080182351
    Abstract: The present invention relates to a liquid crystal display device that is used in display portions of electronics devices and a manufacturing method thereof, and intends to provide a liquid crystal display device that can obtain excellent display quality and a manufacturing method thereof. The method of manufacturing a liquid crystal display device includes preparing a pair of substrates that have a structure P1 having a height Hp1 and a structure P2 having a height Hp2, the heights Hp1 and Hp2 satisfying a relationship of 0.3 (?m)?Hp1-Hp2?1.0 (?m); controlling a dropping amount V of liquid crystal so that a cell gap G1 that is determined by the dropping amount V of liquid crystal, the height Hp1 and the height Hp2 satisfy a relationship of Hp2<G1<Hp1; dropping the controlled dropping amount V of liquid crystal on one of the pair of substrates; and attaching the pair of substrates in a vacuum followed by returning to an atmospheric pressure to fill in the liquid crystal between the pair of substrates.
    Type: Application
    Filed: October 29, 2007
    Publication date: July 31, 2008
    Inventors: Manabu Sawasaki, Yoji Taniguchi, Takashi Takagi
  • Patent number: 7405781
    Abstract: A substrate for use in a liquid crystal display, including an insulating substrate cooperating with an oppositely arranged opposite substrate to hold a liquid crystal. A plurality of pixel regions are arranged on the insulating substrate in a matrix form, in each of which a switching element is formed. At least one resin color filter layer is formed on the pixel regions to cover the switching element. Additionally, at least one layer of the resin color filter layers of the plural colors has a cruciform-shaped pattern protruding to cover the switching elements of neighboring pixels when viewed in a direction of a normal of a substrate surface.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: July 29, 2008
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Atuyuki Hoshino, Shiro Hirota, Naoto Kondo, Tetsuya Fujikawa, Masahiro Kihara, Katsunori Misaki, Seiji Doi, Tomoshige Oda, Akira Komorita, Akihiro Matsui, Manabu Sawasaki, Masahiro Ikeda, Takashi Takagi, Tomonori Tanose, Takuya Saguchi, Hidetoshi Sukenori, Hiroyasu Inoue
  • Publication number: 20080165314
    Abstract: A vertically alignment mode liquid crystal display device having an improved viewing angle characteristic is disclosed. The disclosed liquid crystal display device uses a liquid crystal having a negative anisotropic dielectric constant, and orientations of the liquid crystal are vertical to substrates when no voltage being applied, almost horizontal when a predetermined voltage is applied, and oblique when an intermediate voltage is applied. At least one of the substrates includes a structure as domain regulating means, and inclined surfaces of the structure operate as a trigger to regulate azimuths of the oblique orientations of the liquid crystal when the intermediate voltage is applied.
    Type: Application
    Filed: February 19, 2008
    Publication date: July 10, 2008
    Inventors: Arihiro Takeda, Katsufumi Ohmuro, Yoshio Koike, Shingo Kataoka, Takahiro Sasaki, Takashi Sasabayashi, Hideaki Tsuda, Hideo Chida, Makoto Ohashi, Kenji Okamoto, Hisashi Yamaguchi, Minoru Otani, Makoto Morishige, Noriaki Furukawa, Tsuyoshi Kamada, Yoshinori Tanaka, Atuyuki Hoshino, Shougo Hayashi, Hideaki Takizawa, Takeshi Kinjou, Makoto Tachibanaki, Keiji Imoto, Tadashi Hasegawa, Hidefumi Yoshida, Hiroyasu Inoue, Yoji Taniguchi, Tetsuya Fujikawa, Satoshi Murata, Manabu Sawasaki, Tomonori Tanose, Siro Hirota, Masahiro Ikeda, Kunihiro Tashiro, Kouji Tsukao, Yasutoshi Tasaka, Takatoshi Mayama, Seiji Tanuma, Yohei Nakanishi
  • Patent number: 7352419
    Abstract: In order to suppress color tint during display of black, chromaticity is changed when black is displayed while maintaining chromaticity when white is displayed. For this purpose, the pigment to be dispersed in a color resist is adjusted in particle size and concentration. Such adjustment is so performed that the chromaticity difference between displayed white and black becomes 0.01 or smaller in the x-y chromaticity coordinates by varying the transmissivity of color pixels during display of black. With such a structure, successfully provided is a color liquid crystal display capable of preventing color tint in displayed black, while keeping white chromaticity at the desired level.
    Type: Grant
    Filed: May 11, 2004
    Date of Patent: April 1, 2008
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tomonori Tanose, Manabu Sawasaki
  • Publication number: 20070291200
    Abstract: By circular or polygonal openings formed in at least one of a metal film, a semiconductor film, an insulating film and the like, which films are below a reflecting electrode, minute irregularities are densely formed on a surface of the reflecting electrode. In this case, it is required that a linear density defined by peripheral dimensions of the openings per unit area is equal to 0.2 or more.
    Type: Application
    Filed: December 15, 2005
    Publication date: December 20, 2007
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Kunihiro Tashiro, Yasutoshi Tasaka, Hidefumi Yoshida, Yoshinori Tanaka, Seiji Doi, Tomoshige Oda, Manabu Sawasaki, Tomonori Tanose, Takashi Takagi, Isao Tsushima, Tetsuya Fujikawa, Norio Sugiura
  • Patent number: 7304703
    Abstract: A vertically alignment mode liquid crystal display device having an improved viewing angle characteristic is disclosed. The disclosed liquid crystal display device uses a liquid crystal having a negative anisotropic dielectric constant, and orientations of the liquid crystal are vertical to substrates when no voltage being applied, almost horizontal when a predetermined voltage is applied, and oblique when an intermediate voltage is applied. At least one of the substrates includes a structure as domain regulating means, and inclined surfaces of the structure operate as a trigger to regulate azimuths of the oblique orientations of the liquid crystal when the intermediate voltage is applied.
    Type: Grant
    Filed: September 15, 2000
    Date of Patent: December 4, 2007
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Arihiro Takeda, Katsufumi Ohmuro, Yoshio Koike, Shingo Kataoka, Takahiro Sasaki, Takashi Sasabayashi, Hideaki Tsuda, Hideo Chida, Makoto Ohashi, Kenji Okamoto, Hisashi Yamaguchi, Minoru Otani, Makoto Morishige, Noriaki Furukawa, Tsuyoshi Kamada, Yoshinori Tanaka, Atuyuki Hoshino, Shougo Hayashi, Hideaki Takizawa, Takeshi Kinjou, Makoto Tachibanaki, Keiji Imoto, Tadashi Hasegawa, Hidefumi Yoshida, Hiroyasu Inoue, Yoji Taniguchi, Tetsuya Fujikawa, Satoshi Murata, Manabu Sawasaki, Tomonori Tanose, Siro Hirota, Masahiro Ikeda, Kunihiro Tashiro, Kouji Tsukao, Yasutoshi Tasaka, Takatoshi Mayama, Seiji Tanuma, Yohei Nakanishi
  • Patent number: 7304699
    Abstract: A LCD panel is disclosed that provides improved performance of the frame area that surrounds the panel's display area. The frame area includes a transparent substrate, and color filters provided side-by-side on the transparent substrate, each of the color filters filtering one of at least two colors. The LCD panel is further constituted by a first electrode that counters the color filters, a second electrode that counters the first electrode, and liquid crystal that is inserted between the electrodes. Display spots are suppressed and the frame can appear in a desired color when the panel is in operation.
    Type: Grant
    Filed: March 23, 2004
    Date of Patent: December 4, 2007
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masahiro Ikeda, Manabu Sawasaki, Hidetoshi Sukenori, Tetsuya Fujikawa, Shiro Hirota
  • Patent number: 7304712
    Abstract: The present invention relates to a liquid crystal display device that is used in display portions of electronics devices and a manufacturing method thereof, and intends to provide a liquid crystal display device that can obtain excellent display quality and a manufacturing method thereof. The method of manufacturing a liquid crystal display device includes preparing a pair of substrates that have a structure P1 having a height Hp1 and a structure P2 having a height Hp2, the heights Hp1 and Hp2 satisfying a relationship of 0.3 (?m)?Hp1?Hp2?1.0 (?m); controlling a dropping amount V of liquid crystal so that a cell gap G1 that is determined by the dropping amount V of liquid crystal, the height Hp1 and the height Hp2 satisfy a relationship of Hp2<G1<Hp1; dropping the controlled dropping amount V of liquid crystal on one of the pair of substrates; and attaching the pair of substrates in a vacuum followed by returning to an atmospheric pressure to fill in the liquid crystal between the pair of substrates.
    Type: Grant
    Filed: June 21, 2004
    Date of Patent: December 4, 2007
    Assignees: Fujitsu Limited, Au Optronics Corporation
    Inventors: Manabu Sawasaki, Yoji Taniguchi, Takashi Takagi
  • Publication number: 20070258025
    Abstract: A liquid crystal display device capable of obtaining high luminance and good display characteristics, a substrate for such a liquid crystal display device, and a manufacturing method of such a substrate, are provided. A color filter substrate that holds, together with an array substrate, a liquid crystal having negative dielectric anisotropy. Color filters are formed on a glass substrate and a common electrode is formed on the color filters. Protrusions and auxiliary protrusions for regulating the alignment of the liquid crystal are formed on the common electrode so as to have different sectional shapes.
    Type: Application
    Filed: July 3, 2007
    Publication date: November 8, 2007
    Inventors: Manabu Sawasaki, Takashi Takagi, Tomonori Tanose
  • Publication number: 20070252930
    Abstract: The liquid crystal display comprises a first substrate 2 including a gate bus line 12a, a data bus line 28, a thin film transistor 18 formed near an intersection between the gate bus line 12a and the data bus line 28, and a pixel electrode 52 including a transmission electrode 32a electrically connected to the thin film transistor 18 and a reflection electrode 48b electrically connected to the transmission electrode 32a; a second substrate 4 opposed to the first substrate 2 and including an opposed electrode 68 opposed to the pixel electrode 52; and a liquid crystal layer 6 sealed between the first substrate 2 and the second substrate 4. The reflection electrode 48b is formed over another gate bus line 12b which is different from the gate bus line 12a, with an insulation layer 40 formed therebetween. The decrease of a voltage applied between the reflection electrode 48b and the opposed electrode 68 can be prevented while the space which can be not used as the transmission region can be utilized.
    Type: Application
    Filed: April 9, 2007
    Publication date: November 1, 2007
    Inventors: Kunihiro Tashiro, Yasutoshi Tasaka, Katsufumi Ohmuro, Hidefumi Yoshida, Yoshinori Tanaka, Norio Sugiura, Seiji Doi, Manabu Sawasaki, Tomonori Tanose, Isao Tsushima, Tetsuya Fujikawa, Tomoshige Oda
  • Publication number: 20070211187
    Abstract: There is provided an MVA type liquid crystal display device having high brightness and excellent display quality.
    Type: Application
    Filed: January 18, 2006
    Publication date: September 13, 2007
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Katsunori Misaki, Tetsuya Fujikawa, Yoshihisa Taguchi, Kenichi Nagaoka, Manabu Sawasaki
  • Patent number: 7268842
    Abstract: The generation of residues or flakes of a color filter is suppressed to eliminate conduction failures on an LCD substrate having a color filter on an array substrate. A passivation film formed between a pixel electrode formed in each of a plurality of pixel regions and a TFT for driving the pixel electrode has a multi-layer structure constituted by SiN layers and a SiO layers, and the SiO layer is located at the top of the film. A resin CF layer is formed on the passivation film having such a multi-layer structure. Since the resin CF layer is formed directly on the SiO layer, reduction of the adhesion of the same is suppressed. As a result, the color filter is unlikely to come off when the resin CF layer is formed, and residues of the color filter is unlikely to be generated when a contact hole is formed in the resin CF layer. This suppresses conduction failures and makes it possible to provide a reliable TFT substrate and LCD having high display characteristics.
    Type: Grant
    Filed: January 5, 2006
    Date of Patent: September 11, 2007
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Manabu Sawasaki, Tomonori Tanose, Katsunori Misaki
  • Patent number: 7245345
    Abstract: A liquid crystal display device capable of obtaining high luminance and good display characteristics, a substrate for such a liquid crystal display device, and a manufacturing method of such a substrate, are provided. A color filter substrate holds, together with an array substrate, a liquid crystal having negative dielectric anisotropy. Color filters are formed on a glass substrate and a common electrode is formed on the color filters. Protrusions and auxiliary protrusions for regulating the alignment of the liquid crystal are formed on the common electrode so as to have different sectional shapes.
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: July 17, 2007
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Manabu Sawasaki, Takashi Takagi, Tomonori Tanose
  • Publication number: 20070126973
    Abstract: In the liquid crystal display device and the method of manufacturing the same, the pixel electrodes 32 and the projection pattern 35 are formed on the TFT substrate 30 side, and surfaces of the pixel electrodes 32 and the projection pattern 35 are covered with the vertical alignment film 36. Also, the opposing electrode 44 and the projection pattern 45 are formed on the CF substrate 40 side, and surfaces of the opposing electrode 44 and the projection pattern 45 are covered with the vertical alignment film 46. Then, the TFT substrate 30 and the CF substrate 40 are arranged such that top end portions of the projection pattern 45 on the CF substrate 40 are brought into contact with the TFT substrate 30. Then, the liquid crystal 49 having the negative dielectric anisotropy is sealed between them. Accordingly, the step of scattering the spacers can be omitted, change in the cell thickness can be prevented, and the good display quality can be achieved.
    Type: Application
    Filed: January 30, 2007
    Publication date: June 7, 2007
    Inventors: Masahiro Ikeda, Manabu Sawasaki, Yoji Taniguchi, Hiroyasu Inoue, Tomonori Tanose, Yoshinori Tanaka
  • Patent number: 7227606
    Abstract: A vertical alignment mode liquid crystal display device having an improved viewing angle characteristic is provided. The liquid crystal display device uses a liquid crystal having a negative anisotropic dielectric constant, and orientations of the liquid crystal are vertical to substrates when no voltage is applied, almost horizontal when a predetermined voltage is applied, and oblique when an intermediate voltage is applied. At least one of the substrates includes a structure as domain regulating means, and inclined surfaces of the structure operate as a trigger to regulate azimuths of the oblique orientations of the liquid crystal when the intermediate voltage is applied.
    Type: Grant
    Filed: November 21, 2003
    Date of Patent: June 5, 2007
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Arihiro Takeda, Katsufumi Ohmuro, Yoshio Koike, Shingo Kataoka, Takahiro Sasaki, Hideaki Tsuda, Hideo Chida, Makoto Ohashi, Kenji Okamoto, Hisashi Yamaguchi, Minoru Otani, Makoto Morishige, Noriaki Furukawa, Tsuyoshi Kamada, Yoshinori Tanaka, Atuyuki Hoshino, Shougo Hayashi, Hideaki Takizawa, Takeshi Kinjou, Makoto Tachibanaki, Keiji Imoto, Tadashi Hasegawa, Hidefumi Yoshida, Hiroyasu Inoue, Yoji Taniguchi, Tetsuya Fujikawa, Satoshi Murata, Manabu Sawasaki, Tomonori Tanose, Siro Hirota, Masahiro Ikeda, Kunihiro Tashiro, Kouji Tsukao, Yasutoshi Tasaka, Takatoshi Mayama, Seiji Tanuma, Yohei Nakanishi
  • Patent number: 7224421
    Abstract: A vertical alignment mode liquid crystal display device having an improved viewing angle characteristic uses a liquid crystal having a negative anisotropic dielectric constant, and orientations of the liquid crystal are vertical to substrates when no voltage being applied, almost horizontal when a predetermined voltage is applied, and oblique when an intermediate voltage is applied. At least one of two substrates includes a structure as domain regulating means, to regulate azimuths of the oblique orientations of the liquid crystal when the intermediate voltage is applied.
    Type: Grant
    Filed: October 12, 2000
    Date of Patent: May 29, 2007
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Arihiro Takeda, Katsufumi Ohmuro, Yoshio Koike, Shingo Kataoka, Takahiro Sasaki, Takashi Sasabayashi, Hideaki Tsuda, Hideo Chida, Makoto Ohashi, Kenji Okamoto, Hisashi Yamaguchi, Minoru Otani, Makoto Morishige, Noriaki Furukawa, Tsuyoshi Kamada, Yoshinori Tanaka, Atuyuki Hoshino, Shougo Hayashi, Hideaki Takizawa, Takeshi Kinjou, Makoto Tachibanaki, Keiji Imoto, Tadashi Hasegawa, Hidefumi Yoshida, Hiroyasu Inoue, Yoji Taniguchi, Tetsuya Fujikawa, Satoshi Murata, Manabu Sawasaki, Tomonori Tanose, Siro Hirota, Masahiro Ikeda, Kunihiro Tashiro, Kouji Tsukao, Yasutoshi Tasaka, Takatoshi Mayama, Seiji Tanuma, Yohei Nakanishi
  • Patent number: 7212266
    Abstract: The liquid crystal display comprises a first substrate 2 including a gate bus line 12a, a data bus line 28, a thin film transistor 18 formed near an intersection between the gate bus line 12a and the data bus line 28, and a pixel electrode 52 including a transmission electrode 32a electrically connected to the thin film transistor 18 and a reflection electrode 48b electrically connected to the transmission electrode 32a; a second substrate 4 opposed to the first substrate 2 and including an opposed electrode 68 opposed to the pixel electrode 52; and a liquid crystal layer 6 sealed between the first substrate 2 and the second substrate 4. The reflection electrode 48b is formed over another gate bus line 12b which is different from the gate bus line 12a, with an insulation layer 40 formed therebetween. The decrease of a voltage applied between the reflection electrode 48b and the opposed electrode 68 can be prevented while the space which can be not used as the transmission region can be utilized.
    Type: Grant
    Filed: August 2, 2004
    Date of Patent: May 1, 2007
    Assignees: Fujitsu Limited, AU Optronics Corporation
    Inventors: Kunihiro Tashiro, Yasutoshi Tasaka, Katsufumi Ohmuro, Hidefumi Yoshida, Yoshinori Tanaka, Norio Sugiura, Seiji Doi, Manabu Sawasaki, Tomonori Tanose, Isao Tsushima, Tetsuya Fujikawa, Tomoshige Oda
  • Publication number: 20070064187
    Abstract: A vertically alignment mode liquid crystal display device having an improved viewing angle characteristic is disclosed. The disclosed liquid crystal display device uses a liquid crystal having a negative anisotropic dielectric constant, and orientations of the liquid crystal are vertical to substrates when no voltage being applied, almost horizontal when a predetermined voltage is applied, and oblique when an intermediate voltage is applied. At least one of the substrates includes a structure as domain regulating means, and inclined surfaces of the structure operate as a trigger to regulate azimuths of the oblique orientations of the liquid crystal when the intermediate voltage is applied.
    Type: Application
    Filed: November 16, 2006
    Publication date: March 22, 2007
    Inventors: Arihiro Takeda, Katsufumi Ohmuro, Yoshio Koike, Shingo Kataoka, Takahiro Sasaki, Takashi Sasabayashi, Hideaki Tsuda, Hideo Chida, Makoto Ohashi, Kenji Okamoto, Hisashi Yamaguchi, Minoru Otani, Makoto Morishige, Noriaki Furukawa, Tsuyoshi Kamada, Yoshinori Tanaka, Atuyuki Hoshino, Shougo Hayashi, Hideaki Takizawa, Takeshi Kinjou, Makoto Tachibanaki, Keiji Imoto, Tadashi Hasegawa, Hidefumi Yoshida, Hiroyasu Inoue, Yoji Taniguchi, Tetsuya Fujikawa, Satoshi Murata, Manabu Sawasaki, Tomonori Tanose, Siro Hirota, Masahiro Ikeda, Kunihiro Tashiro, Kouji Tsukao, Yasutoshi Tasaka, Takatoshi Mayama, Seiji Tanuma, Yohei Nakanishi
  • Patent number: 7180567
    Abstract: In a liquid crystal display device, the pixel electrodes and the projection pattern are formed on the TFT substrate side, and surfaces of the pixel electrodes and the projection pattern are covered with a vertical alignment film. Opposing electrode and a projection pattern are formed on the CF substrate side, and surfaces of the opposing electrode and the projection pattern are covered with a vertical alignment film. The TFT substrate and the CF substrate are arranged such that top end portions of the projection pattern on the CF substrate are brought into contact with the TFT substrate. Liquid crystal having negative dielectric anisotropy is sealed between the TFT and CF substrates. Accordingly, the step of scattering the spacers can be omitted, change in the cell thickness can be prevented, and the good display quality can be achieved.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: February 20, 2007
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masahiro Ikeda, Manabu Sawasaki, Yoji Taniguchi, Hiroyasu Inoue, Tomonori Tanose, Yoshinori Tanaka
  • Patent number: 7167224
    Abstract: A vertically alignment mode liquid crystal display device having an improved viewing angle characteristic is disclosed. The disclosed liquid crystal display device uses a liquid crystal having a negative anisotropic dielectric constant, and orientations of the liquid crystal are vertical to substrates when no voltage being applied, almost horizontal when a predetermined voltage is applied, and oblique when an intermediate voltage is applied. At least one of the substrates includes a structure as domain regulating means, and inclined surfaces of the structure operate as a trigger to regulate azimuths of the oblique orientations of the liquid crystal when the intermediate voltage is applied.
    Type: Grant
    Filed: October 4, 2000
    Date of Patent: January 23, 2007
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Arihiro Takeda, Katsufumi Ohmuro, Yoshio Koike, Shingo Kataoka, Takahiro Sasaki, Takashi Sasabayashi, Hideaki Tsuda, Hideo Chida, Makoto Ohashi, Kenji Okamoto, Hisashi Yamaguchi, Minoru Otani, Makoto Morishige, Noriaki Furukawa, Tsuyoshi Kamada, Yoshinori Tanaka, Atuyuki Hoshino, Shougo Hayashi, Hideaki Takizawa, Takeshi Kinjou, Makoto Tachibanaki, Keiji Imoto, Tadashi Hasegawa, Hidefumi Yoshida, Hiroyasu Inoue, Yoji Taniguchi, Tetsuya Fujikawa, Satoshi Murata, Manabu Sawasaki, Tomonori Tanose, Siro Hirota, Masahiro Ikeda, Kunihiro Tashiro, Kouji Tsukao, Yasutoshi Tasaka, Takatoshi Mayama, Seiji Tanuma, Yohei Nakanishi