Patents by Inventor Masahiko Kurihara
Masahiko Kurihara 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: 11714225Abstract: According to an aspect, an illumination device includes: a plurality of light-emitting elements arrayed in a matrix along two directions; and a substrate on which the light-emitting elements are provided. The substrate has a plurality of partial regions. The light-emitting elements are arranged in the partial regions such that four light-emitting elements are arrayed in a two-by-two matrix along the two directions in each of the partial regions. Two light-emitting elements adjacent to each other in each of the partial regions are arranged at a first interval in one direction of the two directions. Two light-emitting elements adjacent to each other with a boundary of two partial regions adjacent to each other along the one direction interposed therebetween are arranged at a second interval in the one direction. The first interval is shorter than the second interval.Type: GrantFiled: January 4, 2022Date of Patent: August 1, 2023Assignee: Japan Display Inc.Inventors: Kouji Fujisawa, Masahiko Kurihara, Takashi Ota
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Patent number: 11714314Abstract: According to one embodiment, an illumination device includes a wiring substrate, light emitting elements, a projection, and a protective layer. The main surface of the wiring substrate is divided into segment regions. Each of the segment regions is provided with n of the light emitting elements. N is greater than 1. The light emitting elements are independently driven in units of the segment regions. The protective layer is configured to protect the light emitting elements. The upper surface of the protective layer is located on the main surface side from the highest part of the projection.Type: GrantFiled: February 18, 2022Date of Patent: August 1, 2023Assignee: Japan Display Inc.Inventors: Masahiko Kurihara, Kouji Fujisawa
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Publication number: 20220171237Abstract: According to one embodiment, an illumination device includes a wiring substrate, light emitting elements, a projection, and a protective layer. The main surface of the wiring substrate is divided into segment regions. Each of the segment regions is provided with n of the light emitting elements. N is greater than 1. The light emitting elements are independently driven in units of the segment regions. The protective layer is configured to protect the light emitting elements. The upper surface of the protective layer is located on the main surface side from the highest part of the projection.Type: ApplicationFiled: February 18, 2022Publication date: June 2, 2022Applicant: Japan Display Inc.Inventors: Masahiko KURIHARA, Kouji FUJISAWA
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Publication number: 20220120959Abstract: According to an aspect, an illumination device includes: a plurality of light-emitting elements arrayed in a matrix along two directions; and a substrate on which the light-emitting elements are provided. The substrate has a plurality of partial regions. The light-emitting elements are arranged in the partial regions such that four light-emitting elements are arrayed in a two-by-two matrix along the two directions in each of the partial regions. Two light-emitting elements adjacent to each other in each of the partial regions are arranged at a first interval in one direction of the two directions. Two light-emitting elements adjacent to each other with a boundary of two partial regions adjacent to each other along the one direction interposed therebetween are arranged at a second interval in the one direction. The first interval is shorter than the second interval.Type: ApplicationFiled: January 4, 2022Publication date: April 21, 2022Inventors: Kouji FUJISAWA, Masahiko KURIHARA, Takashi OTA
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Patent number: 8523421Abstract: To prevent, in a backlight where light emitting diodes are arranged on a side surface of a light guide plate, light leakage from a reflection sheet and reduce non-uniformity of emission light from the backlight. In a liquid crystal display device that includes a backlight that irradiates a liquid crystal panel with light, LEDs are disposed as light emitting elements on a light guide plate that is disposed in the backlight, a reflection sheet that comprises a multilayer film is disposed on a bottom surface of the light guide plate, projections are disposed by sandblasting on the bottom surface of the light guide plate in the vicinity of the LEDs, and tight adhesion between the reflection sheet and the light guide plate is prevented. In the vicinity of the LEDs, in order to counter light non-uniformity, reflecting grooves are not disposed and it is a mirror surface, but tight adhesion can be prevented by disposing the projections.Type: GrantFiled: November 14, 2008Date of Patent: September 3, 2013Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Masayoshi Furuyama, Masahiko Kurihara, Yasuhisa Shiraishi
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Patent number: 7570321Abstract: A liquid crystal display device having includes a light guide plate having a surface thereof serving as an illuminating surface region opposite to a liquid crystal display panel, light sources mounted on a flexible printed-circuit board and provided on a side face of the light guide plate, an optical sheet member interposed between the liquid crystal display panel and the light guide plate. The side surfaces of the light guide plate with the light sources provided thereon have a ridge-like inclined surface formed thereon, when viewed from the illuminating surface, and the ridge-like inclined surfaces serve as a light-receiving surface with the light source arranged thereon.Type: GrantFiled: July 7, 2006Date of Patent: August 4, 2009Assignees: Hitachi Displays, Ltd., Hitachi Display Devices, Ltd.Inventors: Yoshiaki Takahashi, Masahiko Kurihara, Masayuki Mifune, Ken Kagabu
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Publication number: 20090135627Abstract: To prevent, in a backlight where light emitting diodes are arranged on a side surface of a light guide plate, light leakage from a reflection sheet and reduce non-uniformity of emission light from the backlight. In a liquid crystal display device that includes a backlight that irradiates a liquid crystal panel with light, LEDs are disposed as light emitting elements on a light guide plate that is disposed in the backlight, a reflection sheet that comprises a multilayer film is disposed on a bottom surface of the light guide plate, projections are disposed by sandblasting on the bottom surface of the light guide plate in the vicinity of the LEDs, and tight adhesion between the reflection sheet and the light guide plate is prevented. In the vicinity of the LEDs, in order to counter light non-uniformity, reflecting grooves are not disposed and it is a mirror surface, but tight adhesion can be prevented by disposing the projections.Type: ApplicationFiled: November 14, 2008Publication date: May 28, 2009Inventors: Masayoshi Furuyama, Masahiko Kurihara, Yasuhisa Shiraishi
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Publication number: 20070008457Abstract: A liquid crystal display device having includes a light guide plate having a surface thereof serving as an illuminating surface region opposite to a liquid crystal display panel, light sources mounted on a flexible printed-circuit board and provided on a side face of the light guide plate, an optical sheet member interposed between the liquid crystal display panel and the light guide plate. The side surfaces of the light guide plate with the light sources provided thereon have a ridge-like inclined surface formed thereon, when viewed from the illuminating surface, and the ridge-like inclined surfaces serve as a light-receiving surface with the light source arranged thereon.Type: ApplicationFiled: July 7, 2006Publication date: January 11, 2007Inventors: Yoshiaki Takahashi, Masahiko Kurihara, Masayuki Mifune, Ken Kagabu
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Patent number: 6992736Abstract: A liquid crystal display device which efficiently introduces radiation light of light-emitting elements to a light guide body to thereby obtain a uniformly bright display screen. The liquid crystal display device includes a liquid crystal display panel, a light guide body installed at a back face of the liquid crystal display panel, a light-emitting element disposed proximate to a side wall of the light guide body, and a mold case having an elastic support structure which hold the light guide body and biases the light guide body toward the light-emitting element.Type: GrantFiled: January 24, 2003Date of Patent: January 31, 2006Assignees: Hitachi, Ltd., Hitachi Electronics Devices Co., Ltd.Inventors: Ken Saito, Toshiyuki Asou, Masahiko Kurihara
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Publication number: 20030164903Abstract: A liquid crystal display device which efficiently introduces radiation light of light-emitting elements to a light guide body to thereby obtain a uniformly bright display screen. The liquid crystal display device includes a liquid crystal display panel, a light guide body installed at a back face of the liquid crystal display panel, a light-emitting element disposed proximate to a side wall of the light guide body, and a mold case having an elastic support structure which hold the light guide body and biases the light guide body toward the light-emitting element.Type: ApplicationFiled: January 24, 2003Publication date: September 4, 2003Inventors: Ken Saito, Toshiyuki Asou, Masahiko Kurihara
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Patent number: 5726180Abstract: To stabilize the active ingredients, a caffeine is incorporated into a solid pharmaceutical preparation comprising a dextromethorphan and a phenylpropanolamine. The pharmaceutical preparation may further comprise ibuprofen. The active ingredients may be further stabilized, in combination with the incorporation of the caffeine, by grouping and incorporating separately each or suitably combined plural of the active ingredients into different groups or by minimizing the amount of any reducing sugar such as lactose. The solid pharmaceutical preparation is practically valuable since decomposition of each active ingredient with the lapse of time is remarkably suppressed and the active ingredients are stabilized for a longer period of time.Type: GrantFiled: October 30, 1996Date of Patent: March 10, 1998Assignee: Takeda Chemical Industries, Ltd.Inventors: Masahiko Kurihara, Shunichi Itoh, Kou Moriyama, Mitsutaka Isobe, Kenichiro Kiyoshima
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Patent number: 5629316Abstract: To stabilize the active ingredients, a caffeine is incorporated into a solid pharmaceutical preparation comprising a dextromethorphan and a phenylpropanolamine. The pharmaceutical preparation may further comprise ibuprofen. The active ingredients may be further stabilized, in combination with the incorporation of the caffeine, by grouping and incorporating separately each or suitably combined plural of the active ingredients into different groups or by minimizing the amount of any reducing sugar such as lactose. The solid pharmaceutical preparation is practically valuable since decomposition of each active ingredient with the lapse of time is remarkably suppressed and the active ingredients are stabilized for a longer period of time.Type: GrantFiled: June 28, 1994Date of Patent: May 13, 1997Assignee: Takeda Chemical Industries, Ltd.Inventors: Masahiko Kurihara, Shunichi Itoh, Kou Moriyama, Mitsutaka Isobe, Kenichiro Kiyoshima