Patents by Inventor Tatsuyuki Fumikura
Tatsuyuki Fumikura 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: 8054401Abstract: A display device includes a display panel having a front surface and a back surface, a first and second frame, a first elastic member arranged between the first frame and the front surface of the display panel, and a second elastic member arranged between the second frame and the back surface of the display panel, the second elastic member extending in parallel to the first elastic member. A hardness of the first elastic member varies along an elongated direction of the first elastic member so as to have a high-hardness portion, and wherein a hardness of a first portion of the second elastic member which corresponds in location to the high-hardness portion of the first elastic member has a low hardness, a hardness of a second portion of the second elastic member which corresponds in location to the low-harness portion of the first elastic member has a high hardness.Type: GrantFiled: February 2, 2011Date of Patent: November 8, 2011Assignee: Hitachi Displays, Ltd.Inventors: Masaki Tsubokura, Yasuharu Yatsu, Tatsuyuki Fumikura, Yoshiteru Tomizuka
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Publication number: 20110122335Abstract: A display device includes a display panel having a front surface and a back surface, a first and second frame, a first elastic member arranged between the first frame and the front surface of the display panel, and a second elastic member arranged between the second frame and the back surface of the display panel, the second elastic member extending in parallel to the first elastic member. A hardness of the first elastic member varies along an elongated direction of the first elastic member so as to have a high-hardness portion, and wherein a hardness of a first portion of the second elastic member which corresponds in location to the high-hardness portion of the first elastic member has a low hardness, a hardness of a second portion of the second elastic member which corresponds in location to the low-harness portion of the first elastic member has a high hardness.Type: ApplicationFiled: February 2, 2011Publication date: May 26, 2011Inventors: Masaki Tsubokura, Yasuharu Yatsu, Tatsuyuki Fumikura, Yoshiteru Tomizuka
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Patent number: 7889287Abstract: A display device includes a display panel, a frame, an elastic spacer arranged on a peripheral portion of the display panel in parallel to the edge of the display panel, the elastic spacer being arranged between the display panel and the frame. A hardness of the elastic spacer varies along the length-side direction of the elastic spacer.Type: GrantFiled: May 21, 2008Date of Patent: February 15, 2011Assignees: Hitachi Displays, Ltd., Hitachi Display Devices, Ltd.Inventors: Masaki Tsubokura, Yasuharu Yatsu, Tatsuyuki Fumikura, Yoshiteru Tomizuka
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Patent number: 7626654Abstract: An object of the invention is to facilitate attachment of a spacer to a support member in an assembling process of a liquid crystal display device. A display device includes: a display panel, a support member that supports the display panel and a spacer that is interposed between a cut end surface of the display panel and a first surface of the support member, the first surface facing the cut end surface of the display panel. The support member has a recess that opens through the first surface and a second surface, which is connected to the first surface and extends away from the display panel. The spacer includes a spacer position securing portion inserted in the space of the recess of the support member and a buffer portion that is integral with the spacer position securing portion and protrudes from the open end at the first surface of the support member toward the cut end surface of the display panel.Type: GrantFiled: November 21, 2006Date of Patent: December 1, 2009Assignees: Hitachi Displays, Ltd., Hitachi Display Devices, Ltd.Inventors: Masaki Tsubokura, Yuji Azuma, Tatsuyuki Fumikura
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Publication number: 20080225199Abstract: A display device includes a display panel, a frame, an elastic spacer arranged on a peripheral portion of the display panel in parallel to the edge of the display panel, the elastic spacer being arranged between the display panel and the frame. A hardness of the elastic spacer varies along the length-side direction of the elastic spacer.Type: ApplicationFiled: May 21, 2008Publication date: September 18, 2008Inventors: Masaki TSUBOKURA, Yasuhara YATSU, Tatsuyuki FUMIKURA, Yoshiteru TOMIZUKA
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Patent number: 7379128Abstract: A display device has a display panel, a frame, and an elastic spacer arranged on the periphery of the display panel in parallel to the edge of the display panel. The elastic spacer is arranged between the display panel and the frame, and the hardness of the elastic spacer is varied along the length-side direction of the elastic spacer.Type: GrantFiled: September 17, 2004Date of Patent: May 27, 2008Assignees: Hitachi Displays, Ltd., Hitachi Display Devices, Ltd.Inventors: Masaki Tsubokura, Yasuharu Yatsu, Tatsuyuki Fumikura, Yoshiteru Tomizuka
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Publication number: 20070115401Abstract: An object of the invention is to facilitate attachment of a spacer to a support member in an assembling process of a liquid crystal display device. A display device includes: a display panel, a support member that supports the display panel and a spacer that is interposed between a cut end surface of the display panel and a first surface of the support member, the first surface facing the cut end surface of the display panel. The support member has a recess that opens through the first surface and a second surface, which is connected to the first surface and extends away from the display panel. The spacer includes a spacer position securing portion inserted in the space of the recess of the support member and a buffer portion that is integral with the spacer position securing portion and protrudes from the open end at the first surface of the support member toward the cut end surface of the display panel.Type: ApplicationFiled: November 21, 2006Publication date: May 24, 2007Inventors: Masaki Tsubokura, Yuji Azuma, Tatsuyuki Fumikura
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Publication number: 20050057703Abstract: A display device has a display panel, a frame, and an elastic spacer arranged on the periphery of the display panel in parallel to the edge of the display panel. The elastic spacer is arranged between the display panel and the frame, and the hardness of the elastic spacer is varied along the length-side direction of the elastic spacer.Type: ApplicationFiled: September 17, 2004Publication date: March 17, 2005Inventors: Masaki Tsubokura, Yasuharu Yatsu, Tatsuyuki Fumikura, Yoshiteru Tomizuka
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Patent number: 6504587Abstract: A liquid crystal display device includes a liquid crystal display panel having a liquid crystal layer sandwiched between a pair of upper and lower substrates, an illuminating light source disposed behind the liquid crystal display panel, an upper case made of metal having a sidewall bent back from a periphery of a front portion thereof and a window approximately corresponding to a display area of the liquid crystal display panel, a lower case made of resin for housing the illuminating light source in a recess thereof, and an inner frame made of metal having an opening for allowing light from the illuminating light source to be directed toward the liquid crystal display panel and interposed between the liquid crystal display panel and the lower case, the upper case and the lower case being clamped together after stacking the liquid crystal display panel, the inner frame and the illuminating light source in the order named between the upper case and the lower case.Type: GrantFiled: June 15, 1999Date of Patent: January 7, 2003Assignees: Hitachi, Ltd., Hitachi Engineering Co., Ltd.Inventors: Shunsuke Morishita, Yasuyuki Mishima, Tatsuyuki Fumikura
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Publication number: 20020109804Abstract: A liquid crystal display device includes a liquid crystal display element having a pair of substrates and liquid crystal sandwiched between a pair of substrates and a backlight unit which is arranged at a side opposite to a display surface of the liquid crystal display element, wherein the backlight unit comprises a light guide body, plural light sources which are arranged at least along one side surface of the light guide body in the direction perpendicular to a display surface of the liquid crystal display element and irradiates the irradiation light to the liquid crystal display element, a reflection member which covers the plural light sources and has shielding means which is arranged between each two light sources of the plural light sources, and a housing member which houses the light guide body, the plural light sources and the reflection member.Type: ApplicationFiled: January 25, 2002Publication date: August 15, 2002Applicant: Hitachi, Ltd.Inventors: Masaki Tsubokura, Shinji Matsumoto, Tatsuyuki Fumikura
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Patent number: 5914763Abstract: A liquid crystal display including a plurality of parallel display electrodes wired over an electrode substrate, terminals for the display electrodes led out to the end portion of the electrode substrate and connected to TCPs, the terminals having pitches smaller than those of the display electrodes, and leadout wirings for connecting the display electrodes and the terminals. The leadout wirings each consist of a portion extending from a respective display electrode as it is, a portion extended from the respective terminals as it is, and almost parallel, inclined linear wiring that connects the two extended portions. The length of the two extended portions and the width of the inclined linear wiring are adjusted so that the wiring resistances of the individual leadout wirings are substantially equal.Type: GrantFiled: April 8, 1998Date of Patent: June 22, 1999Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd.Inventors: Tatsuhisa Fujii, Mitsugu Katayama, Tomohide Ohira, Tatsuyuki Fumikura, Hitomi Madokoro
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Patent number: 5757450Abstract: An object of this invention is to make uniform the gap in the frame edge portion of the liquid crystal device and the wiring resistances and to improve the display quality and minimize the frame edge area to the limit. To achieve the above object, the liquid crystal display of this invention comprises a plurality of parallel display electrodes 40-n wired over the electrode substrate 311 (312); terminals 41-n for the electrodes 40-n led out to the end portion of the electrode substrate 311 (312) and connected to TCPs, the terminals 41-n having pitches smaller than those of the electrodes 40-n; and leadout wirings 331 (332) for connecting the electrodes 40-n and the terminals 41-n. The leadout wirings 331 (332) each consist of a portion extended from the respective electrode 40-n as it is, a portion extended from the respective terminals 41-n as it is, and almost parallel, inclined linear wiring 42-n that connects the two extended portions.Type: GrantFiled: September 7, 1995Date of Patent: May 26, 1998Assignees: Hitachi, Ltd., Hitachi Device Engineering, Co., Ltd.Inventors: Tatsuhisa Fujii, Mitsugu Katayama, Tomohide Ohira, Tatsuyuki Fumikura, Hitomi Madokoro
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Patent number: RE41324Abstract: A liquid crystal display including a plurality of parallel display electrodes wired over an electrode substance, terminals for the display electrodes led out to the end portion of the electrode substrate and connected to TCPs, the terminals having pitches smaller than those of the display electrodes, and leadout wirings for connecting the display electrodes and the terminals. The leadout wirings each consist of a portion extending from a respective display electrode as it is, a portion extended from the respective terminals as it is, and almost parallel, included linear wiring that connects the two extended portions. The length of the two extended portions and the width of the inclined linear wiring are adjusted so that the wiring resistances of the individual leadout wirings are substantially equal.Type: GrantFiled: June 21, 2001Date of Patent: May 11, 2010Assignee: Hitachi Displays, Ltd.Inventors: Tatsuhisa Fujii, Mitsugu Katayama, Tomohide Ohira, Tatsuyuki Fumikura, Hitomi Madokoro
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Patent number: RE42879Abstract: A liquid crystal display including a plurality of parallel display electrodes wired over an electrode substrate, terminals for the display electrodes led out to the end portion of the electrode substrate and connected to TCPs, the terminals having pitches smaller than those of the display electrodes, and leadout wirings for connecting the display electrodes and the terminals. The leadout wirings each consist of a portion extending from a respective display electrode as it is, a portion extended from the respective terminals as it is, and almost parallel, inclined linear wiring that connects the two extended portions. The length of the two extended portions and the width of the inclined linear wiring are adjusted so that the wiring resistances of the individual leadout wirings are substantially equal.Type: GrantFiled: October 31, 2007Date of Patent: November 1, 2011Assignee: Hitachi Displays, Ltd.Inventors: Tatsuhisa Fujii, Mitsugu Katayama, Tomohide Ohira, Tatsuyuki Fumikura, Hitomi Madokoro