Patents by Inventor Yohei Nakanishi
Yohei Nakanishi 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: 8243241Abstract: A liquid crystal display device including first and second substrates with a liquid crystal layer therebetween. A first electrode is formed on the first substrate, and a second electrode is formed on the second substrate. The first electrode is divided into at least two regions such that at least two domains of different liquid crystal orientation directions are defined within a single pixel. A first of the at least two regions and a second of the at least two regions are located in a diagonal manner with respect to each other, and each include a slit pattern. A polymer, formed from a polymerizable compound that has been polymerized, is formed between the first and second substrates, wherein the amount of the polymerizable compound remaining in the liquid crystal layer after the polymerization is not more than 0.05 parts by weight per 100 parts by weight of the liquid crystal layer.Type: GrantFiled: October 29, 2010Date of Patent: August 14, 2012Assignee: Sharp Kabushiki KaishaInventors: Yohei Nakanishi, Yuichi Inoue, Kazutaka Hanaoka, Hidefumi Yoshida, Yasutoshi Tasaka, Kunihiro Tashiro
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Patent number: 8212981Abstract: A liquid crystal display device including first and second substrates with liquid crystal contained therebetween, and a plurality of picture elements located on the first substrate. Each of the picture elements is defined between a pair of gate bus lines and a pair of data bus lines. At least one of the picture elements includes a switching element connected to one of the data bus lines, a first sub picture element electrode, and a second sub picture element electrode. At least one of the first and second sub picture element electrodes has a body portion and a plurality of branches that extend from the body portion. A neighboring two of the branches are parallel with each other. The first sub picture element electrode connects to the switching element, and the second sub picture element electrode connects, via capacitive coupling, to the switching element.Type: GrantFiled: January 17, 2011Date of Patent: July 3, 2012Assignee: Sharp Kabushiki KaishaInventors: Yohei Nakanishi, Kunihiro Tashiro, Katsufumi Ohmuro, Kazutaka Hanaoka, Jin Hirosawa, Norio Sugiura, Kengo Kanii, Shota Makimoto, Naoto Kondo, Isao Tsushima, Tomonori Tanose, Takashi Takagi, Tetsuya Fujikawa
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Patent number: 8208106Abstract: A substrate for a liquid crystal display including a plurality of gate bus lines and a plurality of data bus lines that cross the gate bus lines, as well as a thin film transistor connected to one of the data bus lines. The display also includes a first electrode with a body portion and a plurality of branches extending from the body portion, wherein at least some of the branches include a first branch portion, which extends from the body portion and defines a first angle, and a second branch portion, which extends from the first branch portion, and which defines a second angle. The first angle is greater than said second angle, and both angles are between 0° and 90° Also included is a second electrode that overlaps at least a portion of the first electrode, and an insulation film between the first and second electrodes.Type: GrantFiled: March 23, 2011Date of Patent: June 26, 2012Assignee: Sharp Kabushiki KaishaInventors: Yohei Nakanishi, Kunihiro Tashiro, Katsufumi Ohmuro, Kazutaka Hanaoka, Jin Hirosawa, Norio Sugiura, Kengo Kanii, Shota Makimoto, Naoto Kondo, Isao Tsushima, Tomonori Tanose, Takashi Takagi, Tetsuya Fujikawa
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Publication number: 20120133864Abstract: A liquid crystal display includes a liquid crystal sealed between two 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. 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: ApplicationFiled: January 12, 2012Publication date: May 31, 2012Applicant: SHARP KABUSHIKI KAISHAInventors: 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
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Publication number: 20120120338Abstract: A liquid crystal display device comprising a liquid crystal layer including liquid crystal molecules provided between a first substrate and a second substrate; pixels forming a display area; electrodes for applying a voltage across the liquid crystal layer within each of the pixels; a plurality of domain regulating structures for dividing orientations of the liquid crystal molecules and forming multiple domains within each of the pixels, when a predetermined voltage is applied across the liquid crystal layer within each of the pixels; and a structure which is formed in an outer area located next to the display area and is substantially the same as at least one of the plurality of domain regulating structures.Type: ApplicationFiled: January 25, 2012Publication date: May 17, 2012Applicant: 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: 8179492Abstract: 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: GrantFiled: October 6, 2010Date of Patent: May 15, 2012Assignee: Sharp Kabushiki KaishaInventors: Yasutoshi Tasaka, Yohei Nakanishi, Masakazu Shibasaki, Tsuyoshi Kamada, Hidefumi Yoshida, Hideaki Tsuda
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Publication number: 20120075567Abstract: A liquid crystal display in which a wide angle of view is obtained and a response time at a halftone can be shortened by regulating an alignment orientation of a liquid crystal by the use of a polymer fixation system in which a liquid crystal layer containing a polymerizable component is scaled between substrates. The polymerizable component is polymerized while a voltage is applied to the liquid crystal layer to fix a liquid crystal alignment. A plurality of stripe-like electrode patterns, in which a pattern width is formed to be wider than a width of a space, are arranged so that the liquid crystal molecules are aligned in a longitudinal direction of the pattern when the polymer is formed by solidifying a polymerizable component mixed in the liquid crystal layer while a voltage is applied to the liquid crystal layer.Type: ApplicationFiled: September 23, 2011Publication date: March 29, 2012Applicant: SHARP KABUSHIKI KAISHAInventors: 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
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Publication number: 20120075558Abstract: 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: ApplicationFiled: September 21, 2011Publication date: March 29, 2012Applicant: SHARP KABUSHIKI KAISHAInventors: Katsuhiko Kishida, Yohei Nakanishi, Hideaki Tsuda, Kazutaka Hanaoka, Yuichi Inoue, Masakazu Shibasaki
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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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Patent number: 8125600Abstract: A liquid crystal display device including first and second substrates which are arranged to be opposite to each other; liquid crystal with negative dielectric anisotropy contained between the first and the second substrates; a polymer which determines directions in which liquid crystal molecules tilt when voltage is applied: and a plurality of picture elements located on the first substrate. At least one of the picture elements on the first substrate includes a switching element; a first sub picture element electrode including a plurality of band-shaped microelectrode parts and a first connecting electrode part electrically connecting the microelectrode parts of the first sub picture element electrode with one another; and a second sub picture element electrode including a plurality of band-shaped microelectrode parts and a second connecting electrode part electrically connecting the microelectrode parts of the second sub picture element electrode with one another.Type: GrantFiled: December 27, 2010Date of Patent: February 28, 2012Assignee: Sharp Kabushiki KaishaInventors: Yohei Nakanishi, Kunihiro Tashiro, Katsufumi Ohmuro, Kazutaka Hanaoka, Jin Hirosawa, Norio Sugiura, Kengo Kanii, Shota Makimoto, Naoto Kondo, Isao Tsushima, Tomonori Tanose, Takashi Takagi, Tetsuya Fujikawa
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Publication number: 20120033158Abstract: A VA-mode liquid crystal display device having a high display quality is provided. A liquid crystal display device according to the present invention includes a vertical alignment type liquid crystal layer; a first substrate and a second substrate facing each other with the liquid crystal layer interposed therebetween; a first electrode provided in the first substrate on the liquid crystal layer side and a second electrode provided in the second substrate on the liquid crystal layer side; and a first alignment film provided between the first electrode and the liquid crystal layer and a second alignment film provided between the second electrode and the liquid crystal layer. The liquid crystal display device includes a plurality of pixel areas located in a matrix.Type: ApplicationFiled: April 12, 2010Publication date: February 9, 2012Inventors: Yohei Nakanishi, Masanobu Mizusaki, Takashi Katayama, Yuichi Kawahira
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Publication number: 20120033167Abstract: The present invention provides a liquid crystal display device capable of reducing the probability of image sticking. The liquid crystal display device comprises a pair of substrates, and a liquid crystal layer between the substrates, wherein at least one of the substrates comprises an alignment film and a polymer layer on the alignment film, and the polymer layer is formed by polymerization of a polymerizable monomer triggered by a polymerization initiator existing at a concentration of 1 mol % or lower relative to the polymerizable monomer.Type: ApplicationFiled: November 18, 2009Publication date: February 9, 2012Applicant: SHARP KABUSHIKI KAISHAInventors: Masanobu Mizusaki, Yohei Nakanishi, Takashi Katayama, Yuichi Kawahira
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Publication number: 20120026442Abstract: The present invention provides a liquid crystal display device producing less image sticking. The liquid crystal display device of the present invention comprises: a pair of substrates; and a liquid crystal layer between the substrates, wherein at least one of the substrates comprises an alignment film and a photopolymer film on the alignment film, the photopolymer film comprises polymers constituted by a photopolymerizable monomer, the photopolymerizable monomer includes two or more polymerizable functional groups, the polymerizable functional groups are bonded to each other through two or more aromatic rings, the aromatic rings include at least one naphthalene ring, and a bond between the naphthalene ring and another aromatic ring has a rotational degree of freedom.Type: ApplicationFiled: November 18, 2009Publication date: February 2, 2012Inventors: Yohei Nakanishi, Yuichiro Yamada, Masanobu Mizusaki
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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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Publication number: 20120008079Abstract: The present invention provides a liquid crystal display device capable of reducing the probability of image sticking. The liquid crystal display device includes a pair of substrates and a liquid crystal layer between the substrates. At least one of the substrates includes an alignment film and a polymer layer on the alignment film. The polymer layer includes monomer units derived from at least two species of polymerizable monomers. The at least two species of polymerizable monomers include at least two species of monomers selected from the group consisting of: specific polyfunctional monomers and specific monofunctional monomers.Type: ApplicationFiled: October 8, 2009Publication date: January 12, 2012Inventors: Masanobu Mizusaki, Takashi Katayama, Yuichi Kawahira, Takeshi Noma, Yohei Nakanishi
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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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Publication number: 20110267574Abstract: The present invention provides a liquid crystal display device and a composition for forming a liquid crystal layer, which can sufficiently reduce image sticking without increasing the number of production processes. The present invention directs to a liquid crystal display device including a pair of substrates, and a liquid crystal layer sandwiched between the pair of substrates, wherein at least one of the pair of substrates has a photopolymer film formed by polymerizing a photopolymerizable monomer, on a surface on the liquid crystal layer side, and the photopolymer film contains a first monomer unit having a structure in which three benzene rings are condensed.Type: ApplicationFiled: December 25, 2009Publication date: November 3, 2011Inventors: Yuichi Kawahira, Masanobu Mizusaki, Yohei Nakanishi
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Publication number: 20110228209Abstract: In accordance with a method of manufacturing a liquid crystal display device including, in a picture element, a first sub-picture-element region where a threshold voltage of the transmittance-applied voltage characteristic is Vth1 and a second sub-picture-element region where a threshold voltage of the transmittance-applied voltage characteristic is Vth2, liquid crystal, which polymerizable components are added to, is filled into the space between a first and a second substrates; thereafter, a voltage V1 slightly higher than the threshold voltage Vth1 is applied to a liquid crystal layer, and is held for a certain length of time; subsequently, a voltage V2 slightly higher than the threshold voltage Vth2 is applied to the liquid crystal layer, and is held for a certain length of time; additionally, a voltage V3 higher than a white-displaying voltage which is applied while the liquid crystal display device is in actual use is applied to the liquid crystal layer, and is held for a certain length of time; then, tType: ApplicationFiled: April 11, 2011Publication date: September 22, 2011Applicant: Sharp Kabushiki KaishaInventors: Kazutaka Hanaoka, Yohei Nakanishi, Katsufumi Ohmuro, Kunihiro Tashiro, Norio Sugiura, Kengo Kanii
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Publication number: 20110222005Abstract: A liquid crystal display device (100) according to the present invention includes: an active matrix substrate (220) having a pixel electrode (224); a counter substrate (240) having a counter electrode (244); a vertical-alignment type liquid crystal layer (260); and alignment sustaining layers (210, 230) provided between the active matrix substrate (220) and the liquid crystal layer (260) and between the counter substrate (240) and the liquid crystal layer (260). The alignment sustaining layers (210, 230) contain a polymerization product (poa) resulting from polymerization of a polyfunctional monomer. At least one of the active matrix substrate and the counter substrate further includes an alignment film (110, 120) located on the liquid crystal layer side, the alignment film (110, 120) containing polyimide (pi) and a polymerization product (pob) resulting from polymerization of a polyfunctional monomer.Type: ApplicationFiled: June 25, 2009Publication date: September 15, 2011Inventors: Masanobu Mizusaki, Yohei Nakanishi