Patents by Inventor Hideaki Tsuda
Hideaki Tsuda 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: 8134671Abstract: A liquid crystal display device including a pair of substrates sandwiching liquid crystal molecules, a plurality of gate bus lines, and a plurality of data bus lines, with each of the data bus lines extending to intersect the gate bus lines and bending in a zigzag manner. A plurality of pixels are formed in areas enclosed by the data and gate bus lines, with a plurality of pixel electrodes, each covering a substantial area of one of the pixels. A plurality of domain regulating structures for regulating orientation directions of the liquid crystal molecules and for forming multiple domains are formed in each of the pixels. At least one of the domain regulating structures bends along a first side edge of the pixel electrode and domains are divided in accordance with the bending of the domain regulating structure.Type: GrantFiled: March 29, 2011Date of Patent: March 13, 2012Assignee: Sharp Kabushiki KaishaInventors: 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
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Publication number: 20120050631Abstract: A high-performance liquid crystal display device is provided that can be manufactured at a low cost and a high production yield. In this liquid crystal display device, a liquid crystal composition comprising liquid crystal molecules and a polymerizable compound that can be polymerized by ultraviolet rays or by a combination of ultraviolet rays and heat is disposed between a pair of substrates; the polymerizable compound is polymerized, forming a liquid crystal layer, by an operation including irradiation of ultraviolet rays that do not contain wavelength components of not higher than 313 nm; and uneven portions are installed on the liquid crystal layer contacting surface, or a slit pattern is installed in an electrode, or uneven portions are installed on the liquid crystal layer contacting surface, and a slit pattern is installed in the electrode.Type: ApplicationFiled: November 8, 2011Publication date: March 1, 2012Applicant: SHARP KABUSHIKI KAISHAInventors: Katsufumi Ohmuro, Hideaki Tsuda, Shingo Kataoka, Jin Hirosawa
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Patent number: 8098344Abstract: The invention relates to a liquid crystal display device including a first transistor, a plurality of sub-picture element electrodes formed in a picture element region, a control electrode formed in capacitance coupling with at least one of the plural sub-picture element electrodes, the control electrode being applied with a display voltage from the first transistor, and an auxiliary capacitance bus line held at a predetermined voltage level and constituting an auxiliary capacitance between the auxiliary capacitance bus line and the control electrode. A second transistor is provided between the sub-picture element electrode coupled with the control electrode by the capacitance coupling and the auxiliary capacitance bus line or between the sub-picture element electrode coupled with the control electrode by the capacitance coupling and the sub-picture element electrode connected to the first transistor.Type: GrantFiled: January 15, 2010Date of Patent: January 17, 2012Assignee: Sharp Kabushiki KaishaInventors: Masakazu Shibasaki, Yasutoshi Tasaka, Hideaki Tsuda, Yohei Nakanishi, Hidefumi Yoshida, Tsuyoshi Kamada
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Patent number: 8094277Abstract: The present invention provides a liquid crystal display device used as a display part of an electronic apparatus which exhibits high brightness and favorable display quality. The liquid crystal display device includes a pair of substrates which are arranged to face each other in an opposed manner; vertical-alignment type liquid crystal which is sealed between the pair of substrates; a plurality of pixel regions, each pixel region including a sub pixel having a pixel electrode on one substrate and a sub pixel having a pixel electrode on one substrate, a slit formed between the pixel electrodes; and a singular point control part which includes projecting portions which are formed on end portions of the pixel electrodes on the slit-side and controls singular points of the liquid crystal.Type: GrantFiled: April 7, 2011Date of Patent: January 10, 2012Assignee: Sharp Kabushiki KaishaInventors: Yasutoshi Tasaka, Takahiro Sasaki, Yohei Nakanishi, Masakazu Shibasaki, Takashi Sasabayashi, Hidefumi Yoshida, Tsuyoshi Kamada, Hideaki Tsuda, Kazuya Ueda
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Patent number: 8054429Abstract: A liquid crystal display device including first and second substrates, with a liquid crystal layer including liquid crystal molecules between the first and second substrates. A first electrode formed on the first substrate and a second electrode formed on the second substrate. An alignment layer is formed on at least one of the substrates, and a polymer is formed on the alignment layer. The liquid crystal molecules are tilted when no voltage is applied to the liquid crystal molecules. The first electrode has a plurality of stripe-like electrode patterns, and the stripe-like electrode patterns have a width that is wider than a width of a space between adjacent strip-like electrode patterns.Type: GrantFiled: August 5, 2009Date of Patent: November 8, 2011Assignee: Sharp Kabushiki KaishaInventors: Kazutaka Hanaoka, Takahiro Sasaki, Tsutomu Seino, Yohei Nakanishi, Seiji Tanuma, Kimiaki Nakamura, Yuichi Inoue, Masakazu Shibasaki, Hideaki Tsuda, Yoshio Koike, Yasutoshi Tasaka, Hidefumi Yoshida, Kunihiro Tashiro
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Patent number: 8045124Abstract: A liquid crystal display device including a pair of substrates, a liquid crystal layer sealed between the pair of substrates, and a seal member for sealing peripheries of the substrates. The seal member may be of rectangular shape in plan view, thereby defining two end parts and two side parts, with one of the end parts including an injection port. The device may also include one or more structures formed near the seal member for slowing an injection speed of a liquid crystal when it is injected into a space between the substrates. The structures may be formed integrally with the seal member. In certain embodiments, a thickness of the liquid crystal layer in a vicinity of the seal member is less than that of the liquid crystal layer in a display region, due to the structure. Also, in certain embodiments, the structures are generally L-shaped, in plan view.Type: GrantFiled: October 30, 2007Date of Patent: October 25, 2011Assignee: Sharp Kabushiki KaishaInventor: Hideaki Tsuda
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Patent number: 8045071Abstract: Disclosed herein is a liquid crystal apparatus, including, a pair of substrates; and a liquid crystal layer held between the substrates, the liquid crystal layer having positive dielectric anisotropy, the liquid crystal of the liquid crystal layer exhibiting, when no voltage is applied thereto, an orientation direction parallel to a transverse electric field which is generated when a voltage is applied to the liquid crystal layer.Type: GrantFiled: January 16, 2009Date of Patent: October 25, 2011Assignee: Sony CorporationInventors: Masaaki Kabe, Koji Noguchi, Hideaki Tsuda
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Patent number: 8044907Abstract: A liquid crystal display including two substrates, gate bus lines, liquid crystal molecules, and a polymer that determines directions in which the liquid crystal molecules tilt. A plurality of divisional areas are arranged on one of the substrates. The pixels are aligned in a column between drain bus lines. A pixel electrode is formed at each of the divisional areas. A first thin film transistor drives a first divisional area, and a second thin film transistor drives a second divisional area of the same column. The first and second thin film transistors are electrically connected to the same gate bus line. Either the pixel electrodes formed at each of the divisional areas are electrically insulated from each other, or they are connected to each other through a high resistance. A first threshold voltage within the first divisional area is different from a second threshold voltage of the second divisional area.Type: GrantFiled: December 6, 2010Date of Patent: October 25, 2011Assignee: Sharp Kabushiki KaishaInventors: Takashi Sasabayashi, Arihiro Takeda, Hiroyasu Inoue, Kazuya Ueda, Yoshio Koike, Hideaki Tsuda, Yasutoshi Tasaka, Hidefumi Yoshida, Kunihiro Tashiro, Tsuyoshi Kamada, Kimiaki Nakamura
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Patent number: 7995175Abstract: A liquid crystal display device including first and second substrates sandwiching therebetween a liquid crystal layer, and first and second polarizers. The first polarizer and the second polarizer are disposed such that an optical absorption axis of the first polarizer and an optical absorption axis of the second polarizer cross each other perpendicularly. There is disposed an optically biaxial retardation film having refractive indices nx, ny and nz respectively in x-, y- and z-directions, wherein the optically biaxial retardation film provides an in-plane retardation having a magnitude defined by |nx-ny| • d, with d representing a thickness of the optically biaxial retardation film, and further wherein the in-plane retardation of the optically biaxial retardation film has a value of 20 nm or more but does not exceed 80 nm.Type: GrantFiled: July 13, 2010Date of Patent: August 9, 2011Assignee: Sharp Kabushiki KaishaInventors: Katsufumi Ohmuro, Yoshio Koike, Takahiro Sasaki, Hideaki Tsuda, Hideo Chida
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Publication number: 20110187977Abstract: The present invention provides a liquid crystal display device used as a display part of an electronic apparatus which exhibits high brightness and favorable display quality. The liquid crystal display device includes a pair of substrates which are arranged to face each other in an opposed manner; vertical-alignment type liquid crystal which is sealed between the pair of substrates; a plurality of pixel regions, each pixel region including a sub pixel having a pixel electrode on one substrate and a sub pixel having a pixel electrode on one substrate, a slit formed between the pixel electrodes; and a singular point control part which includes projecting portions which are formed on end portions of the pixel electrodes on the slit-side and controls singular points of the liquid crystal.Type: ApplicationFiled: April 7, 2011Publication date: August 4, 2011Applicant: Sharp Kabushiki KaishaInventors: Yasutoshi Tasaka, Takahiro Sasaki, Yohei Nakanishi, Masakazu Shibasaki, Takashi Sasabayashi, Hidefumi Yoshida, Tsuyoshi Kamada, Hideaki Tsuda, Kazuya Ueda
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Patent number: 7990503Abstract: A liquid crystal display device includes a pair of substrates; a liquid crystal sealed between the substrates; plural pixel regions each having a first pixel electrode formed on one of the pair of substrates and a second pixel electrode separated from the first pixel electrode; a TFT having a source electrode which is electrically connected to the first pixel electrode; a control capacitance portion which has a control capacitance electrode electrically connected to the source electrode and opposed to at least part of the second pixel electrode via an insulating film, and which thereby establishes capacitive coupling between the source electrode and the second pixel electrode; linear projections formed on the other substrate; and apertures formed in the first and second pixel electrodes so as to occupy parts of overlap regions of the linear projections and the first and second pixel electrodes as viewed perpendicularly to the substrate surfaces, for controlling the positions of singular points of alignment veType: GrantFiled: January 18, 2006Date of Patent: August 2, 2011Assignee: Sharp Kabushiki KaishaInventors: Yasutoshi Tasaka, Masakazu Shibasaki, Yohei Nakanishi, Hidefumi Yoshida, Tsuyoshi Kamada, Kazuya Ueda, Hideaki Tsuda
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Publication number: 20110176098Abstract: 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: ApplicationFiled: March 29, 2011Publication date: July 21, 2011Applicant: SHARP KABUSHIKI KAISHAInventors: 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
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Patent number: 7965363Abstract: A liquid crystal display device including a common electrode on a first substrate, a pixel electrode on a second substrate, and a liquid crystal layer between the first and second substrates. The device also include first and second alignment control structures formed, respectively, on the first and second substrates, for regulating azimuths of orientations of the liquid crystal when a voltage is applied thereto. The first and second alignment control structures each include a first line portion (extending in a first direction) and a second line portion (extending in a second direction, which is different from the first direction). The pixel electrode includes an edge extending in a direction different from both the first and second directions.Type: GrantFiled: February 19, 2008Date of Patent: June 21, 2011Assignee: Sharp Kabushiki KaishaInventors: 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
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Patent number: 7944534Abstract: The present invention provides a liquid crystal display device used as a display part of an electronic apparatus which exhibits high brightness and favorable display quality. The liquid crystal display device includes a pair of substrates which are arranged to face each other in an opposed manner; vertical-alignment type liquid crystal which is sealed between the pair of substrates; a plurality of pixel regions, each pixel region including a sub pixel having a pixel electrode on one substrate and a sub pixel having a pixel electrode on one substrate, a slit formed between the pixel electrodes; and a singular point control part which includes projecting portions which are formed on end portions of the pixel electrodes on the slit-side and controls singular points of the liquid crystal.Type: GrantFiled: January 5, 2010Date of Patent: May 17, 2011Assignee: Sharp Kabushiki KaishaInventors: Yasutoshi Tasaka, Takahiro Sasaki, Yohei Nakanishi, Masakazu Shibasaki, Takashi Sasabayashi, Hidefumi Yoshida, Tsuyoshi Kamada, Hideaki Tsuda, Kazuya Ueda
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Publication number: 20110075060Abstract: The invention relates to a liquid crystal display used as a display section of an electronic apparatus and a method of manufacturing the same, and it is aimed at providing a liquid crystal display which can achieve high viewing angle characteristics and a method of manufacturing the same. A configuration is employed which includes a pair of substrates provided opposite to each other, a liquid crystal sealed between the pair of substrates, protrusions formed on at least one of the pair of substrates for regulating the alignment of the liquid crystal, and a plurality of pixel regions having both of a first area in which the protrusions are disposed at first intervals a2 and which has a first threshold voltage for driving of the liquid crystal and a second area in which the protrusions are disposed at second intervals a2 smaller than the first intervals and which has a second threshold voltage lower than the first threshold voltage.Type: ApplicationFiled: December 6, 2010Publication date: March 31, 2011Applicant: SHARP KABUSHIKI KAISHAInventors: Takashi Sasabayashi, Arihiro Takeda, Hiroyasu Inoue, Kazuya Ueda, Yoshio Koike, Hideaki Tsuda, Yasutoshi Tasaka, Hidefumi Yoshida, Kunihiro Tashiro, Tsuyoshi Kamada, Kimiaki Nakamura
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Patent number: 7910178Abstract: A liquid crystal display device which is capable of further decreasing the cost of production yet obtaining a good liquid crystal alignment, and a method of producing the same. The liquid crystal display device comprises a pair of substrates arranged facing each other; a liquid crystal sealed between the substrates; and an ultraviolet ray-cured product for controlling the alignment of the liquid crystal. The ultraviolet ray-cured product is formed near the interfaces to the substrates by polymerizing a polymerizable component mixed in the liquid crystal with light. The polymerizable component contains a polyfunctional monomer having a symmetrical structure, and the ultraviolet ray-cured product has a side-chain structure.Type: GrantFiled: April 5, 2005Date of Patent: March 22, 2011Assignees: Fujitsu Limited, AU Optronics CorporationInventors: Shingo Kataoka, Katsufumi Ohmuro, Hideaki Tsuda, Jin Hirosawa
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Publication number: 20110063553Abstract: The invention relates to a liquid crystal display based on an MVA mode of multi-division alignment in which alignment states of liquid crystal molecules having a negative dielectric anisotropy are made different from each other, and provides a liquid crystal display in which a drop in transmittance is suppressed and response characteristics are improved.Type: ApplicationFiled: November 22, 2010Publication date: March 17, 2011Applicant: SHARP KABUSHIKI KAISHAInventors: Kazutaka Hanaoka, Seiji Tanuma, Yohei Nakanishi, Kazuya Ueda, Shingo Kataoka, Takahiro Sasaki, Arihiro Takeda, Hideaki Tsuda, Takatoshi Mayama, Yuichi Inoue, Norio Sugiura
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Publication number: 20110037915Abstract: The invention relates to a liquid crystal display device and provides a liquid crystal display device which can achieve high display quality. A liquid crystal display device is provided with first and second TFTs each having a gate electrode connected to an nth gate bus line and a drain electrode connected to a drain bus line; a first pixel electrode connected to a source electrode of the first TFT; a second pixel electrode connected to a source electrode of the second TFT; a third TFT having a gate electrode connected to an (n+1)th gate bus line and a source electrode connected to the second pixel electrode; and a buffer capacitance portion having a buffer capacitance electrode which is formed in the same layer as the first and second pixel electrodes and is connected to a drain electrode of the third TFT and a buffer capacitance electrode connected to a storage capacitance bus line.Type: ApplicationFiled: October 6, 2010Publication date: February 17, 2011Applicant: Sharp Kabushiki KaishaInventors: Yasutoshi Tasaka, Yohei Nakanishi, Masakazu Shibasaki, Tsuyoshi Kamada, Hidefumi Yoshida, Hideaki Tsuda
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Patent number: 7872719Abstract: A liquid crystal display including a pair of substrates having a predetermined cell gap and arranged opposite to each other, vertical alignment films formed between the pair of substrates, a liquid crystal layer sealed between the vertical alignment films and having a negative dielectric anisotropy, and a cured material provided in the liquid crystal layer and including a liquid crystal skeleton, which is tilted with respect to the substrate at a first angle, for changing tilt angles of liquid crystal molecules for each of predetermined regions. The vertical alignment films have an alignment control direction that defines a second angle with respect to said substrates, wherein the second angle is different from the first angle.Type: GrantFiled: October 30, 2008Date of Patent: January 18, 2011Assignee: Sharp Kabushiki KaishaInventors: Kazutaka Hanaoka, Seiji Tanuma, Yohei Nakanishi, Kazuya Ueda, Shingo Kataoka, Takahiro Sasaki, Arihiro Takeda, Hideaki Tsuda, Takatoshi Mayama, Yuichi Inoue, Norio Sugiura
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Patent number: 7859500Abstract: A liquid crystal display including a pair of substrates, with a liquid crystal sealed therebetween. A plurality of gate bus lines and a plurality of drain bus lines are provided on one of the substrates, along with a pixel electrode, which includes first and second sub-pixel electrodes. A common electrode is provided on the other substrate. The first sub-pixel electrode is electrically connected to a first of the drain bus lines via a TFT. There is also a storage capacitor bus line that overlaps the first sub-pixel electrode, but does not overlap the second sub-pixel electrode, and an electrode that overlaps the storage capacitor bus line and the first sub-pixel electrode at a location where the storage capacitor bus line overlaps the first sub-pixel electrode, as well as a connection line that connects the electrode to the second sub-pixel electrode and has a portion overlapping the first sub-pixel electrode.Type: GrantFiled: December 12, 2005Date of Patent: December 28, 2010Assignee: Sharp Kabushiki KaishaInventors: Takashi Sasabayashi, Arihiro Takeda, Kazuya Ueda, Yoshio Koike, Hideaki Tsuda