Patents by Inventor Jin Hirosawa
Jin Hirosawa 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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Publication number: 20120268705Abstract: In one embodiment, a first substrate is provided with first and second main pixel electrodes electrically connected each other extending along a first direction, respectively. A second substrate includes first to third main common electrodes electrically connected each other extending along the first direction, respectively. The first main pixel electrode is arranged between the first and second main common electrodes, and the second main pixel electrode is arranged between the second and third main common electrodes. Four inter-electrode distances are formed. One of the four inter-electrode distances is set to an optimal inter-electrode distance, and one of the four inter-electrode distances is different from at least one of the other three inter-electrode distances. Herein, the optimal inter-electrode distance is defined as follows: in a range of voltage which is applied between the electrodes, more than 90% of a peak transmissivity is obtained by the optimal inter-electrode distance.Type: ApplicationFiled: April 18, 2012Publication date: October 25, 2012Applicant: Japan Display Central Inc.Inventors: Hitomi Hasegawa, Jin Hirosawa, Arihiro Takeda, Nobuko Fukuoka, Yusuke Morita
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Publication number: 20120268703Abstract: In one embodiment, a liquid crystal display device includes a first substrate and a second substrate. The first substrate includes a first gate line and a second gate line respectively extending in a first direction. A main pixel electrode is arranged between the first gate line and the second gate line and extending in a second direction orthogonally crossing the first direction. A pair of sub-common electrodes respectively faces the first gate line and the second gate line through an insulating layer and extends in the first direction. The second substrate includes a main common electrode electrically connected with the sub-common electrode and arranged on both sides sandwiching the main pixel electrode. A liquid crystal layer is held between the first substrate and the second substrate.Type: ApplicationFiled: April 18, 2012Publication date: October 25, 2012Applicant: Japan Display Central Inc.Inventors: Hirofumi FUNAKOSHI, Jin Hirosawa
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Publication number: 20120268677Abstract: A liquid crystal display in which a first substrate includes a sub-pixel electrode extending in a first direction, and first and second main pixel electrodes connected with opposite ends of the sub-pixel electrode and extending in a second direction orthogonally crossing the first direction. A second substrate includes first and second sub-common electrodes arranged on both sides sandwiching the sub-pixel electrode, a first main common electrode connected with the first sub-common electrode and extending along the second direction opposite to the extending direction of the first main pixel electrode on one end side of the sub-pixel electrode, and a second main common electrode connected with the second sub-common electrode and extending along the second direction opposite to the extending direction of the second main pixel electrode on the other end side of the sub-pixel electrode.Type: ApplicationFiled: April 24, 2012Publication date: October 25, 2012Applicant: Japan Display Central Inc.Inventors: Yusuke MORITA, Jin Hirosawa
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Publication number: 20120249930Abstract: In one embodiment, a liquid crystal display device includes a lens array unit having a cylindrical lens array constituted by a plurality of cylindrical lenses each having a lens surface and a generatrix corresponding to the lens surface. The lens surface is arranged in a line in a direction orthogonally crossing the generatrix. A first substrate is arranged at a back side of the lens array unit and includes a pixel electrode in a belt shape extending in a different direction from the direction in which the generatrix extends. The pixel electrode is formed in a V character shape. A second substrate is arranged between the lens array unit and the first substrate including a counter electrode in a belt shape commonly arranged on the pixel electrodes extending in a parallel direction to the pixel electrode.Type: ApplicationFiled: March 21, 2012Publication date: October 4, 2012Applicant: Toshiba Mobile Display Co., Ltd.Inventors: Keisuke Takano, Takashi Sasabayashi, Arihiro Takeda, Keiji Tago, Jin Hirosawa, Hitomi Hasegawa, Yusuke Morita, Hirokazu Morimoto
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Publication number: 20120249941Abstract: In one embodiment, a liquid crystal display device includes a first substrate and a second substrate. The first substrate includes a first source line and a second source line extending in a first direction, a main pixel electrode arranged between the first source line and a second source line and extending in the first direction, and a pair of first main common electrodes arranged on the first source line and the second source line interposing an insulating layer and extending in the first direction, respectively. The second substrate includes a pair of second main common electrode arranged above the first main common electrode and extending in the first direction, and the first main common electrode is connected with the second main common electrode. A liquid crystal layer is held between the first substrate and the second substrate.Type: ApplicationFiled: March 21, 2012Publication date: October 4, 2012Applicant: Toshiba Mobile Display Co., Ltd.Inventors: Koji YAMAMOTO, Jin Hirosawa
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Publication number: 20120236239Abstract: In one embodiment, a liquid crystal display device comprises a pixel electrode including a first main electrode disposed between a first line and a second line and extending like a belt in a first extending direction. A first counter electrode includes a second main electrode extending like a belt in the first extending direction, a second counter electrode having a third main electrode extending like a belt in the first extending direction. The second and third main electrodes are disposed on both sides of the first main electrode, and an initial alignment direction of the liquid crystal molecules is parallel with a direction passing through an interstice between the first end side of the first main electrode and the second line, and through an interstice between the second end side of the first main electrode and the first line.Type: ApplicationFiled: January 12, 2012Publication date: September 20, 2012Applicant: TOSHIBA MOBILE DISPLAY CO., LTD.Inventors: Yusuke MORITA, Jin Hirosawa, Arihiro Takeda, Nobuko Fukuoka, Keiji Tago, Kazuya Daishi
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Publication number: 20120219729Abstract: The invention relates to a liquid crystal display utilizing a vertically aligned state of liquid crystal molecules when no voltage is applied and to a method of manufacturing the same. The liquid crystal display includes a monofunctional monomer having a structure expressed by X—R (where X represents an acrylate group or a methacrylate group, and R represents an organic group having a steroid skeleton). A liquid crystal material is sandwiched between substrates which is then irradiated with ultraviolet rays to cure the monofunctional monomer, thereby forming a polymer film at an interface of a substrate. The monofunctional monomer has a hydrophobic skeleton such as an alkyl chain and a photoreactive group on one side of the skeleton.Type: ApplicationFiled: April 18, 2012Publication date: August 30, 2012Applicant: SHARP KABUSHIKI KAISHAInventors: Shingo Kataoka, Hideaki Tsuda, Katsufumi Ohmuro, Jin Hirosawa, Seiji Tanuma, Yoshio Koike
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Publication number: 20120182509Abstract: In one embodiment, a first substrate includes a pixel electrode having a first main electrode in a belt-like shape extending along a first cross line direction which crosses at an acute angle in a counterclockwise direction with respect to an initial alignment direction of liquid crystal molecules, and a second main electrode in the belt-like shape extending along a second cross line direction which crosses at an acute angle in a clockwise direction with respect to the initial alignment direction of the liquid crystal molecules. A second substrate includes a counter electrode having a pair of third main electrodes in the belt-like shape arranged above a pair of regions sandwiching the first main electrode extending along a first cross line direction and a pair of fourth main electrodes in the belt-like shape arranged above a pair of regions sandwiching the second main electrode extending along the second cross line direction.Type: ApplicationFiled: December 29, 2011Publication date: July 19, 2012Applicant: Toshiba Mobile Display Co., Ltd.Inventors: Keisuke TAKANO, Arihiro TAKEDA, Takashi SASABAYASHI, Nobuko FUKUOKA, Yusuke MORITA, Jin HIROSAWA, Hitomi HASEGAWA, Yoshitaka YAMADA, Keiji TAGO, Hirokazu MORIMOTO
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Publication number: 20120182501Abstract: According to one embodiment, a liquid crystal display device includes a first substrate including a T-shaped pixel electrode including a strip-shaped first main electrode positioned midway between a first source line and a second source line, and a strip-shaped sub-electrode, a second substrate including a counter-electrode which includes a strip-shaped second main electrode positioned above the first source line and the second source line, and a liquid crystal layer, wherein when an inter-electrode distance between the first main electrode and the second main electrode is L and a cell gap is GP, a formed angle ?, which is expressed by a relationship of tan ?=GP/L, is greater than a pre-tilt angle ? of a liquid crystal molecule.Type: ApplicationFiled: January 13, 2012Publication date: July 19, 2012Inventors: Nobuko FUKUOKA, Arihiro TAKEDA, Jin HIROSAWA
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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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Patent number: 8178171Abstract: The invention relates to a liquid crystal display utilizing a vertically aligned state of liquid crystal molecules when no voltage is applied and to a method of manufacturing the same. The invention is aimed at providing a liquid crystal display and a method of manufacturing the same in which the existing step for forming vertical alignment films can be omitted to achieve a cost reduction. The liquid crystal display includes a monofunctional monomer having a structure expressed by X—R (where X represents an acrylate group or a methacrylate group, and R represents an organic group having a steroid skeleton). A liquid crystal material is sandwiched between substrates which is then irradiated with ultraviolet rays to cure the monofunctional monomer, thereby forming a polymer film at an interface of a substrate. The monofunctional monomer has a hydrophobic skeleton such as an alkyl chain and a photoreactive group on one side of the skeleton.Type: GrantFiled: May 13, 2010Date of Patent: May 15, 2012Assignee: Sharp Kabushiki KaishaInventors: Shingo Kataoka, Hideaki Tsuda, Katsufumi Ohmuro, Jin Hirosawa, Seiji Tanuma, Yoshio Koike
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Publication number: 20120099070Abstract: In one embodiment, a liquid crystal display device includes a first substrate and a second substrate. In the first substrate, gate lines extend in a first direction, and a first source line and a second source line extend in a second direction orthogonally crossing the first direction. A pixel electrode having a first belt-like main electrode is arranged approximately in a central portion between the first source line and the second source line and extending in the second direction. A first belt-like sub-electrode covers the gate line between the first source line and the second source line and extending in the first direction. The second substrate includes a counter electrode having a second main electrode arranged on the first and second source lines and extending in the second direction. A liquid crystal layer is held between the first substrate and the second substrate.Type: ApplicationFiled: September 23, 2011Publication date: April 26, 2012Applicant: Toshiba Mobile Display Co., Ltd.Inventors: Jin HIROSAWA, Arihiro TAKEDA, Nobuko FUKUOKA, Yusuke MORITA, Kazuya DAISHI
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Patent number: 8154703Abstract: A liquid crystal display panel includes an array substrate including a scanning line, a signal line crossing the scanning line, a switching element electrically connected to the scanning line and the signal line, and a pixel electrode formed on the scanning line, the signal line, and the switching element and electrically connected to the switching element, an opposite substrate including a common electrode with a through-hole and arranged opposite to the array substrate with a gap, a columnar spacer formed on either one of the array substrate and the opposite substrate and positioned away from the pixel electrode, the columnar spacer overlapping the through-hole and holding the gap between the array substrate and the opposite substrate, and a liquid crystal layer sandwiched between the array substrate and the opposite substrate.Type: GrantFiled: October 10, 2008Date of Patent: April 10, 2012Assignee: Toshiba Matsushita Display Technology Co., Ltd.Inventors: Masumi Manabe, Jin Hirosawa, Masanori Imakawa
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Publication number: 20120069280Abstract: A liquid crystal display device includes an array substrate including a pixel electrode which is disposed in each of pixels, a counter-substrate which is disposed to be opposed to the array substrate and includes a counter-electrode which is common to a plurality of the pixels, and a liquid crystal layer which is held between the array substrate and the counter-substrate. The pixel electrode includes a first major electrode portion having a strip shape, and the counter-electrode includes second major electrode portions each having a strip shape, the second major electrode portions being disposed in parallel to the first major electrode portion in a manner that the first major electrode portion is interposed between the second major electrode portions and that the first major electrode portion and the second major electrode portions are alternately arranged.Type: ApplicationFiled: November 23, 2011Publication date: March 22, 2012Inventor: Jin Hirosawa
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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: 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: 20120019755Abstract: In one embodiment, a liquid crystal display panel includes a plurality of pixels arranged in a first direction and a second direction orthogonally crossing with the first direction. A first alignment pattern is formed in the counter electrode. The first alignment pattern faces the pixel electrode and extending in the first direction. A second alignment pattern is formed in the counter electrode. The second alignment pattern also faces the pixel electrode and extends in the second direction intersecting with the first alignment pattern. An expanding alignment portion is arranged at the intersecting portion of the first alignment pattern and the second alignment pattern. The first and second alignment patterns are formed of alignment slits or alignment protrusions arranged in the counter substrate.Type: ApplicationFiled: July 12, 2011Publication date: January 26, 2012Applicant: Toshiba Mobile Display Co., Ltd.Inventors: Taiyo TOKUOKA, Tetsuya Iizuka, Kazuya Daishi, Jin Hirosawa
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Publication number: 20110234931Abstract: The technology presented herein has a feature of providing a liquid crystal display device of an excellent viewing angle characteristic and high brightness, including: liquid crystals containing polymerizable monomers between a first substrate with a pixel electrode having micro slits and a second substrate facing the first substrate; wherein the monomers are polymerizable with voltage applied to the liquid crystals; and an alignment orientation of the liquid crystals is controllable to a direction of extending the micro slit, wherein the pixel electrode includes: a direct coupling part electrically connected to a switching element; a capacitive coupling part electrically insulated from the switching element, and a space between the direct and capacitive coupling parts, wherein directions in which the micro slits are extended along the direct and capacitive coupling parts are orthogonal to each other.Type: ApplicationFiled: June 3, 2011Publication date: September 29, 2011Applicant: Sharp Kabushiki KaishaInventors: Kazutaka Hanaoka, Katsufumi Ohmuro, Kunihiro Tashiro, Jin Hirosawa, Norio Sugiura, Kengo Kanii, Shota Makimoto, Yasuhiro Ohno, Isao Tsushima, Tomonori Tanose, Takashi Takagi, Tetsuya Fujikawa, Takahiro Sasaki
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Publication number: 20110234947Abstract: In one embodiment, a liquid crystal display device includes a first substrate having a pixel electrode and a second substrate having a counter electrode. The pixel electrode includes a first pixel electrode portion in a belt-like shape extending in a first direction and a second pixel electrode portion connected with one end of the first pixel electrode portion and extending in a second direction orthogonally crossing the first direction. The counter electrode includes a first counter electrode portion in a belt-like shape extending in the first direction to form a lateral electric field between the first counter electrode portion and the first pixel electrode portion. A liquid crystal layer is held between the first substrate and the second substrate. The lateral electric field is applied to the liquid crystal layer.Type: ApplicationFiled: March 29, 2011Publication date: September 29, 2011Applicant: Toshiba Mobile Display Co., Ltd.Inventor: Jin HIROSAWA