Patents by Inventor Takuma Tomotoshi
Takuma Tomotoshi 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: 10948787Abstract: A liquid crystal display device of the present invention includes, in the given order: a first substrate; a liquid crystal layer containing liquid crystal molecules; and a second substrate. The first substrate includes a first electrode, a second electrode closer to the liquid crystal layer than the first electrode is, and an insulating film between the first electrode and the second electrode. The second electrode is provided with openings including a first opening and a second opening adjacent to each other. The first opening and the second opening are independent of each other and are point-symmetrical to each other. The first opening and the second opening each have a shape including: curved portions that expand an opening periphery outward at the respective ends in the longitudinal direction; and paired protruding portions that allow the opening periphery to protrude partially in the lateral direction in the middle of the longitudinal direction.Type: GrantFiled: March 7, 2017Date of Patent: March 16, 2021Assignee: SHARP KABUSHIKI KAISHAInventors: Mitsuhiro Murata, Yosuke Iwata, Takuma Tomotoshi
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Patent number: 10802345Abstract: Disclosed is a horizontal alignment mode liquid crystal display device that can achieve higher definition and improved response speed. The liquid crystal display device includes, in the given order: a first substrate; a liquid crystal layer containing liquid crystal molecules; and a second substrate. The first substrate includes a first electrode, a second electrode positioned closer to the liquid crystal layer than the first electrode is, and an insulating film between the first and second electrodes. The second electrode is provided with an opening having a shape including a longitudinal-shaped portion and a pair of protrusions protruding to opposite sides from the longitudinal-shaped portion. The protrusions are provided at portions excluding both end portions in the longitudinal direction of the longitudinal-shaped portion and are located at corresponding positions.Type: GrantFiled: February 21, 2017Date of Patent: October 13, 2020Assignee: SHARP KABUSHIKI KAISHAInventors: Mitsuhiro Murata, Yosuke Iwata, Takuma Tomotoshi
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Patent number: 10754207Abstract: A liquid crystal display device includes an upper substrate and a lower substrate; and a liquid crystal layer sandwiched between the upper and lower substrates. The lower substrate includes a pixel electrode, a first auxiliary capacitance electrode, and a second auxiliary capacitance electrode for one pixel, and one or two auxiliary capacitance lines for one pixel line including pixels. The two auxiliary capacitive electrodes are electrically connected to different auxiliary capacitance lines. Each of the first auxiliary capacitance electrode and the second auxiliary capacitance electrode and the pixel electrode overlap each other in a plan view. The first auxiliary capacitance electrode and the second auxiliary capacitance electrode differ from each other in shape in a display region of each of the pixels. The shape of the first auxiliary capacitance electrode in a first pixel is identical to the shape of the second auxiliary capacitance electrode in a second pixel adjacent to the first pixel.Type: GrantFiled: March 23, 2017Date of Patent: August 25, 2020Assignee: SHARP KABUSHIKI KAISHAInventors: Yosuke Iwata, Mitsuhiro Murata, Takuma Tomotoshi, Satoshi Matsumura
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Publication number: 20200184909Abstract: The liquid crystal display device according to the present invention includes a first substrate, a second substrate, a liquid crystal layer, and a display region including multiple display units arranged in a matrix. The first substrate includes a first electrode, and a second electrode. Liquid crystal molecules are aligned parallel to the first substrate in a no-voltage-applied state. The second electrode in each of the display units is provided with an opening having a certain shape. The display units include at least one high-speed display unit in which four liquid crystal domains are generated in the light-transmitting region in a voltage-applied state and at least one high-luminance display unit in which two liquid crystal domains are generated in the light-transmitting region in the voltage-applied state. A data signal is written in the at least one high-speed display unit later than in the high-luminance display unit within one frame period.Type: ApplicationFiled: September 22, 2017Publication date: June 11, 2020Applicant: Sharp Kabushiki KaishaInventors: Mitsuhiro MURATA, Takuma TOMOTOSHI, Yosuke IWATA
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Patent number: 10663804Abstract: A liquid crystal display device includes, in the given order: a first substrate; a liquid crystal layer containing liquid crystal molecules; and a second substrate; wherein the first substrate includes a first electrode, a second electrode positioned closer to the liquid crystal layer than the first electrode is, and an insulating film between the first electrode and the second electrode, the second electrode has an opening having a shape including an elliptical portion and/or a circular portion, in a no-voltage-applied state, where no voltage is applied between the first electrode and the second electrode, the liquid crystal molecules are aligned parallel to the first substrate, and in a plan view, the major axis of the elliptical portion is parallel or perpendicular to the alignment azimuth of the liquid crystal molecules in the no-voltage-applied state.Type: GrantFiled: September 20, 2016Date of Patent: May 26, 2020Assignee: SHARP KABUSHIKI KAISHAInventors: Mitsuhiro Murata, Yosuke Iwata, Takuma Tomotoshi, Satoshi Matsumura
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Patent number: 10634960Abstract: A liquid crystal display device including an upper substrate and a lower substrate; and a liquid crystal layer sandwiched between the upper and lower substrates, wherein the lower substrate includes a first electrode and a second electrode and a third electrode arranged in a layer different from the first electrode, the first electrode has multiple linear portions and an opening is provided between the linear portions, the second electrode and the third electrode are a pair of comb-shaped electrodes, each of the comb-shaped electrodes has a trunk portion and multiple branch portions branching from the trunk portion, at least one of the branch portions of the third electrode has a narrow portion which is narrowest and a projection portion which is wider than the narrow portion, one of angles on the upper side and on the opening side formed by a contour line of the opening on each of the left and right sides of the projection portion and the narrow portion of the branch portion of the third electrode in the opeType: GrantFiled: July 3, 2017Date of Patent: April 28, 2020Assignee: SHARP KABUSHIKI KAISHAInventors: Satoshi Matsumura, Mitsuhiro Murata, Takuma Tomotoshi, Yosuke Iwata
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Patent number: 10558085Abstract: The present invention provides a liquid crystal display device capable of achieving a high contrast ratio, a wide viewing angle, and a high-speed response. The liquid crystal display device includes an upper substrate; a lower substrate; and a liquid crystal layer sandwiched between the upper substrate and the lower substrate. The lower substrate includes a first electrode, and a second electrode and a third electrode arranged in a layer different from the first electrode. The first electrode includes a trunk portion and multiple branch portions branching from the trunk portion and is provided with an opening between the branch portions. The second electrode and the third electrode constitute a pair of comb-shaped electrodes and each include a trunk portion and multiple branch portions branching from the trunk portion. The branch portions of the first electrode are each bent at a predetermined angle. The electrodes each have a predetermined configuration.Type: GrantFiled: July 5, 2017Date of Patent: February 11, 2020Assignee: SHARP KABUSHIKI KAISHAInventors: Takuma Tomotoshi, Mitsuhiro Murata, Yosuke Iwata, Satoshi Matsumura
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Publication number: 20190310525Abstract: A liquid crystal display device including an upper substrate and a lower substrate; and a liquid crystal layer sandwiched between the upper and lower substrates, wherein the lower substrate includes a first electrode and a second electrode and a third electrode arranged in a layer different from the first electrode, the first electrode has multiple linear portions and an opening is provided between the linear portions, the second electrode and the third electrode are a pair of comb-shaped electrodes, each of the comb-shaped electrodes has a trunk portion and multiple branch portions branching from the trunk portion, at least one of the branch portions of the third electrode has a narrow portion which is narrowest and a projection portion which is wider than the narrow portion, one of angles on the upper side and on the opening side formed by a contour line of the opening on each of the left and right sides of the projection portion and the narrow portion of the branch portion of the third electrode in the opeType: ApplicationFiled: July 3, 2017Publication date: October 10, 2019Applicant: SHARP KABUSHIKI KAISHAInventors: SATOSHI MATSUMURA, MITSUHIRO MURATA, TAKUMA TOMOTOSHI, YOSUKE IWATA
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Publication number: 20190212615Abstract: The present invention provides a liquid crystal display device capable of achieving a high contrast ratio, a wide viewing angle, and a high-speed response. The liquid crystal display device includes an upper substrate; a lower substrate; and a liquid crystal layer sandwiched between the upper substrate and the lower substrate. The lower substrate includes a first electrode, and a second electrode and a third electrode arranged in a layer different from the first electrode. The first electrode includes a trunk portion and multiple branch portions branching from the trunk portion and is provided with an opening between the branch portions. The second electrode and the third electrode constitute a pair of comb-shaped electrodes and each include a trunk portion and multiple branch portions branching from the trunk portion. The branch portions of the first electrode are each bent at a predetermined angle. The electrodes each have a predetermined configuration.Type: ApplicationFiled: July 5, 2017Publication date: July 11, 2019Applicant: SHARP KABUSHIKI KAISHAInventors: TAKUMA TOMOTOSHI, MITSUHIRO MURATA, YOSUKE IWATA, SATOSHI MATSUMURA
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Publication number: 20190121208Abstract: A liquid crystal display device includes an upper substrate and a lower substrate; and a liquid crystal layer sandwiched between the upper and lower substrates. The lower substrate includes a pixel electrode, a first auxiliary capacitance electrode, and a second auxiliary capacitance electrode for one pixel, and one or two auxiliary capacitance lines for one pixel line including pixels. The two auxiliary capacitive electrodes are electrically connected to different auxiliary capacitance lines. Each of the first auxiliary capacitance electrode and the second auxiliary capacitance electrode and the pixel electrode overlap each other in a plan view. The first auxiliary capacitance electrode and the second auxiliary capacitance electrode differ from each other in shape in a display region of each of the pixels. The shape of the first auxiliary capacitance electrode in a first pixel is identical to the shape of the second auxiliary capacitance electrode in a second pixel adjacent to the first pixel.Type: ApplicationFiled: March 23, 2017Publication date: April 25, 2019Inventors: YOSUKE IWATA, MITSUHIRO MURATA, TAKUMA TOMOTOSHI, SATOSHI MATSUMURA
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Publication number: 20190113785Abstract: The present invention provides a horizontal alignment-mode liquid crystal display device enabling higher definition, more rapid response, and a higher transmission. The liquid crystal display device of the present invention includes, in the given order: a first substrate; a liquid crystal layer containing liquid crystal molecules; and a second substrate. The first substrate includes a first electrode, a second electrode closer to the liquid crystal layer than the first electrode is, and an insulating film between the first electrode and the second electrode. The second electrode is provided with an opening having a longitudinal shape with no protruding portion. The liquid crystal molecules are aligned parallel to the first substrate in a no-voltage-applied state where no voltage is applied between the first electrode and the second electrode. The liquid crystal molecules have negative anisotropy of dielectric constant.Type: ApplicationFiled: March 22, 2017Publication date: April 18, 2019Inventors: TAKUMA TOMOTOSHI, MITSUHIRO MURATA, YOSUKE IWATA
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Publication number: 20190113784Abstract: The present invention provides a horizontal alignment mode liquid crystal display device capable of achieving high resolution and improving transmittance.Type: ApplicationFiled: March 21, 2017Publication date: April 18, 2019Inventors: YOSUKE IWATA, MITSUHIRO MURATA, TAKUMA TOMOTOSHI
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Publication number: 20190113811Abstract: The present invention provides a horizontal alignment mode liquid crystal display device capable of achieving high resolution, high speed response, and high transmittance. The liquid crystal display device of present invention sequentially includes a first substrate, a liquid crystal layer containing liquid crystal molecules, and a second substrate. The first substrate includes a first electrode, a second electrode provided closer to the liquid crystal layer than the first electrode is, and an insulating film provided between the first electrode and the second electrode. An opening portion (15) is formed in the second electrode in each of a plurality of units of display (50) arrayed in a matrix pattern. The liquid crystal molecules are aligned parallel to the first substrate in a voltage non-applied state in which no voltage is applied between the first electrode and the second electrode.Type: ApplicationFiled: March 22, 2017Publication date: April 18, 2019Applicant: SHARP KABUSHIKI KAISHAInventors: YOSUKE IWATA, MITSUHIRO MURATA, TAKUMA TOMOTOSHI, HIDEFUMI YOSHIDA
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Publication number: 20190107759Abstract: A liquid crystal display device includes, in the given order: a first substrate; a liquid crystal layer containing liquid crystal molecules; and a second substrate; wherein the first substrate includes a first electrode, a second electrode positioned closer to the liquid crystal layer than the first electrode is, and an insulating film between the first electrode and the second electrode, the second electrode has an opening having a shape including an elliptical portion and/or a circular portion, in a no-voltage-applied state, where no voltage is applied between the first electrode and the second electrode, the liquid crystal molecules are aligned parallel to the first substrate, and in a plan view, the major axis of the elliptical portion is parallel or perpendicular to the alignment azimuth of the liquid crystal molecules in the no-voltage-applied state.Type: ApplicationFiled: September 20, 2016Publication date: April 11, 2019Inventors: MITSUHIRO MURATA, YOSUKE IWATA, TAKUMA TOMOTOSHI, SATOSHI MATSUMURA
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Publication number: 20190094580Abstract: Disclosed is a horizontal alignment mode liquid crystal display device that can achieve higher definition and improved response speed. The liquid crystal display device includes, in the given order: a first substrate; a liquid crystal layer containing liquid crystal molecules; and a second substrate. The first substrate includes a first electrode, a second electrode positioned closer to the liquid crystal layer than the first electrode is, and an insulating film between the first and second electrodes. The second electrode is provided with an opening having a shape including a longitudinal-shaped portion and a pair of protrusions protruding to opposite sides from the longitudinal-shaped portion. The protrusions are provided at portions excluding both end portions in the longitudinal direction of the longitudinal-shaped portion and are located at corresponding positions.Type: ApplicationFiled: February 21, 2017Publication date: March 28, 2019Inventors: MITSUHIRO MURATA, YOSUKE IWATA, TAKUMA TOMOTOSHI
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Publication number: 20190086744Abstract: A liquid crystal display device of the present invention includes, in the given order: a first substrate; a liquid crystal layer containing liquid crystal molecules; and a second substrate. The first substrate includes a first electrode, a second electrode closer to the liquid crystal layer than the first electrode is, and an insulating film between the first electrode and the second electrode. The second electrode is provided with openings including a first opening and a second opening adjacent to each other. The first opening and the second opening are independent of each other and are point-symmetrical to each other. The first opening and the second opening each have a shape including: curved portions that expand an opening periphery outward at the respective ends in the longitudinal direction; and paired protruding portions that allow the opening periphery to protrude partially in the lateral direction in the middle of the longitudinal direction.Type: ApplicationFiled: March 7, 2017Publication date: March 21, 2019Inventors: MITSUHIRO MURATA, YOSUKE IWATA, TAKUMA TOMOTOSHI
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Patent number: 9507189Abstract: The present invention provides a display panel that exhibits increased light use efficiency and decreased occurrence of display anomalies. The display panel includes substrates; a light modulating layer that contains shape-anisotropic members that rotate according to the direction of an electric field and that controls the transmittance of incident light by changing the area projected onto the substrates by the shape-anisotropic members; and supporting members that support the shape-anisotropic members and are rotatably connected thereto.Type: GrantFiled: September 2, 2013Date of Patent: November 29, 2016Assignee: SHARP KABUSHIKI KAISHAInventors: Eiji Satoh, Takuma Tomotoshi, Tomoko Teranishi, Takahiro Nakahara
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Publication number: 20160231637Abstract: An infrared dimming apparatus of the present invention includes an automatic control circuit that controls switching in a dimming cell between an infrared reflective state and an infrared transmissive state in accordance with a predetermined time schedule.Type: ApplicationFiled: August 8, 2014Publication date: August 11, 2016Applicant: Sharp Kabushiki KaishaInventors: Eiji SATOH, Kiyoshi MINOURA, Tomoko TERANISHI, Takuma TOMOTOSHI
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Publication number: 20160116814Abstract: A modulation layer in a display device is made of a dispersion liquid including: a plurality of shape-anisotropic members that, by rotating or moving in accordance with changes in the magnitude of frequency of an applied voltage, change the area thereof projected onto substrates in a direction normal to the substrates; a dispersion medium; and a thickening agent. When shear stress applied to the dispersion liquid is high, the thickening agent reduces the viscosity of the dispersion liquid more than when shear stress is low.Type: ApplicationFiled: February 27, 2014Publication date: April 28, 2016Applicant: SHARP KABUSHIKI KAISHAInventors: Tomoko TERANISHI, Eiji SATOH, Takuma TOMOTOSHI, Takahiro NAKAHARA
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Patent number: 9134475Abstract: A front light (1) includes a light source (8), a light guide plate (9), and a plurality of dots (4) that are provided on a surface of the light guide plate (9), which surface faces a light exit surface of the light guide plate (9). Each of the plurality of dots (4) includes (i) a light reflective layer (2) for reflecting light toward the light guide plate (9), and (ii) a dark layer (3) for absorbing light, the dark layer completely covering the light reflective layer (2) so as to be in contact with the light guide plate (9) without any gap between the light guide plate (9) and the dark layer (3).Type: GrantFiled: June 27, 2012Date of Patent: September 15, 2015Assignee: Sharp Kabushiki KaishaInventors: Hisashi Watanabe, Tomoko Teranishi, Toshiki Matsuoka, Takahiro Nakahara, Takuma Tomotoshi, Eiji Satoh, Kohzoh Nakamura, Yohzoh Narutaki