Patents by Inventor Fumihiko Fujishiro
Fumihiko Fujishiro 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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Fluorescent lamp, fluorescent lamp unit, liquid crystal display device, and method of emitting light
Patent number: 6917354Abstract: A liquid crystal display device has a fluorescent lamp and a driving circuit as a back light. A closed container, a discharge gas sealed in the closed container, first discharge electrodes, and second discharge electrodes are included in the fluorescent lamp. The driving circuit repeats a first step of causing electric discharge in first discharge areas by applying a voltage having a negative polarity to the first discharge electrodes and a voltage having a positive polarity to the second discharge electrodes, and a second step of causing electric discharge in second discharge areas which are different from the first discharge areas by applying a voltage having a positive polarity to the first discharge electrodes and a voltage having a negative polarity to the second discharge electrodes.Type: GrantFiled: February 12, 2002Date of Patent: July 12, 2005Assignee: NEC LCD Technologies, Inc.Inventors: Fumihiko Fujishiro, Masatake Baba, Syuuki Yamamori -
Publication number: 20050146896Abstract: Light is input into an incident surface portion from a fluorescent lamp, and most of the light propagates in repetition directions. Since a length of an emission portion of the fluorescent lamp is shorter than that of the incident surface portion, there are areas to which no light propagates and dark portions generate in the repetition directions of a string of prisms. Since these dark portion generate out of the display area, a display quality is improved.Type: ApplicationFiled: February 10, 2005Publication date: July 7, 2005Inventor: Fumihiko Fujishiro
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Patent number: 6914651Abstract: A reflective or semi-transmissive type LCD device reduces a moire generated by the irregularity pattern of the reflector plate of the LCD panel. A front light has an optical guide plate in which prism grooves are arranged in an arrangement direction. The pattern of the reflector plate is formed by blocks, each of which includes a basic irregularity pattern for one pixel or its element, and (N?1) modified basic irregularity pattern or patterns each formed by modifying the basic irregularity pattern. All the basic irregularity patterns in each block are arranged in a direction perpendicular to the arrangement direction. The basic irregularity pattern is continuous at either end thereof in the arrangement direction. The basic irregularity pattern is divided in the arrangement direction into N sub-patterns. Each of the (N?1) modified basic irregularity patterns is formed by the N sub-patterns circularly shifted one by one.Type: GrantFiled: July 31, 2003Date of Patent: July 5, 2005Assignee: NEC LCD Technologies, Ltd.Inventor: Fumihiko Fujishiro
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Patent number: 6891587Abstract: A light-reflection type liquid crystal display device includes (a) a liquid crystal display panel, (b) a polarizer mounted on the liquid crystal display panel, (c) a light-guide mounted on the polarizer, (d) a resin layer sandwiched between the polarizer and the light-guide for fixing the polarizer and the light-guide to each other, (e) a light-source arranged adjacent to an end of the light-guide for supplying light to the light-guide, and (f) a frame having a bottom and a wall defining an opening which has the same contour as that of the light-guide. The light-guide is positioned relative to the polarizer by being lowered along an inner wall of the frame through the opening onto the polarizer.Type: GrantFiled: May 30, 2003Date of Patent: May 10, 2005Assignee: NEC LCD Technologies, Ltd.Inventor: Fumihiko Fujishiro
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Patent number: 6858978Abstract: A method is provided for manufacturing a support frame of a rectangular display panel within a short working time. The method includes a process of taking out L-shaped component members each having convex portions and concave portions arranged alternately at an end portion in a manner that each of the convex portions and concave portions is bilaterally symmetrical, while a shear droop and a burr are formed on an end portion and process of fitting and coupling end portions of L-shaped component members by placing the convex portions and the concave portions in such a manner that the shear droop of each of the convex portions faces the burr of each of the concave portions and the burr of each of the convex portions faces the shear droop of each of the concave portions and that that the convex portions and the concave portions are pushed towards each other and by pressing the convex portions and the concave portions using a pair of metal molds.Type: GrantFiled: March 26, 2002Date of Patent: February 22, 2005Assignee: NEC LCD Technologies, Ltd.Inventors: Fumihiko Fujishiro, Hirokazu Fukuyoshi
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Patent number: 6816213Abstract: The present invention provides a mounting structure for mounting a liquid crystal module to a cover of a mobile terminal. The mounting structure comprises: at least a pair of first and second engagement parts, wherein the first engagement part is provided on a side portion of the liquid crystal module, while the second engagement part is provided on a side portion of a structural member of the cover, so that the paired first and second engagement parts are engaged with each other only by fitting the liquid crystal module into the structural member of the cover.Type: GrantFiled: December 9, 2002Date of Patent: November 9, 2004Assignee: NEC LCD Technologies, Ltd.Inventors: Kasuhiro Kato, Masatake Baba, Michiaki Nishiyama, Fumihiko Fujishiro, Takakazu Yano, Toshihisa Ogawa, Tomoo Miwa, Yasuhiro Sato
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Publication number: 20040219857Abstract: A method is provided for manufacturing a support frame of a rectangular display panel within a short working time. The method includes a process of taking out L-shaped component members each having convex portions and concave portions arranged alternately at an end portion in a manner that each of the convex portions and concave portions is bilaterally symmetrical, while a shear droop and a burr are formed on an end portion and process of fitting and coupling end portions of L-shaped component members by placing the convex portions and the concave portions in such a manner that the shear droop of each of the convex portions faces the burr of each of the concave portions and the burr of each of the convex portions faces the shear droop of each of the concave portions and that that the convex portions and the concave portions are pushed towards each other and by pressing the convex portions and the concave portions using a pair of metal molds.Type: ApplicationFiled: June 4, 2004Publication date: November 4, 2004Applicant: NEC LCD Technologies, Ltd.Inventors: Fumihiko Fujishiro, Hirokazu Fukuyoshi
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Publication number: 20040051818Abstract: A projection type liquid crystal display unit includes (a) a first frame (13) having a first surface (15) formed with a first opening (13a), (b) a second frame (12) having a second surface formed with a second opening (12a), and (c) a liquid crystal display panel (11) sandwiched between the first and second frames (13, 12) such that an incident light passes through the second opening (12a), the liquid crystal display panel (11) and the first opening (13a) in this order. The first and second frames (13, 12) are both composed of resin, and the first surface (15) of the first frame (13) is roughened.Type: ApplicationFiled: August 14, 2003Publication date: March 18, 2004Applicants: NEC CORPORATION, NEC LCD TECHNOLOGIES, LTD.Inventor: Fumihiko Fujishiro
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Patent number: 6693682Abstract: A light emission surface having a substantially single surface in a liquid crystal display 1 is designed so as to be opposite to a rear of a liquid crystal panel 2 or a rear of an optical member 5 through an air layer. Thus, it is possible to provide a liquid crystal display that can prevent a heat accumulation in a liquid crystal panel without any drop of brightness, and a light source device used in the liquid crystal display.Type: GrantFiled: March 14, 2001Date of Patent: February 17, 2004Assignee: NEC LCD Technologies, Ltd.Inventors: Fumihiko Fujishiro, Tsutomu Kanatsu, Fumio Hasegawa, Shin-Ichirou Ono, Hirokazu Fukuyoshi
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Patent number: 6667567Abstract: A light source unit includes (a) a light source having a main surface through which a light emitted from the light source passes towards an object, (b) a light-permeable substrate located between the main surface of the light source and the object, (c) a first seal sandwiched between the main surface of the light source and a surface of the light-permeable substrate and defining a first closed space together with the main surface and the surface of the light-permeable substrate, the first closed space being in vacuum, and (d) a heat radiator equipped with the light source for outwardly radiating heat generated in the light source.Type: GrantFiled: March 15, 2001Date of Patent: December 23, 2003Assignee: NEC LCD Technologies, Ltd.Inventor: Fumihiko Fujishiro
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Patent number: 6661480Abstract: A light emission surface having a substantially single surface in a liquid crystal display 1 is designed so as to be opposite to a rear of a liquid crystal panel 2 or a rear of an optical member 5 through an air layer. Thus, it is possible to provide a liquid crystal display that can prevent a heat accumulation in a liquid crystal panel without any drop of brightness, and a light source device used in the liquid-crystal display.Type: GrantFiled: November 21, 2002Date of Patent: December 9, 2003Assignee: NEC LCD Technologies, Ltd.Inventors: Fumihiko Fujishiro, Tsutomu Kanatsu, Fumio Hasegawa, Shin-Ichirou Ono, Hirokazu Fukuyoshi
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Publication number: 20030223025Abstract: A light-reflection type liquid crystal display device includes (a) a liquid crystal display panel, (b) a polarizer mounted on the liquid crystal display panel, (c) a light-guide mounted on the polarizer, (d) a resin layer sandwiched between the polarizer and the light-guide for fixing the polarizer and the light-guide to each other, (e) a light-source arranged adjacent to an end of the light-guide for supplying light to the light-guide, and (D a frame having a bottom and a wall defining an opening which has the same contour as that of the light-guide. The light-guide is positioned relative to the polarizer by being lowered along an inner wall of the frame through the opening onto the polarizer.Type: ApplicationFiled: May 30, 2003Publication date: December 4, 2003Inventor: Fumihiko Fujishiro
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Publication number: 20030223023Abstract: In a reflection type liquid crystal display device having a front light and a reflection type liquid crystal panel including a reflection electrode of uneven structure, average tilt angles of the uneven structure of the reflection electrode are changed to form a high directivity reflective region having a characteristic reflecting an incident light from the front light in a vertical direction and a wide viewing angle reflective region having a characteristic reflecting an outside light incident slantingly from the front in a vertical direction, thereby forming the high directivity reflective region and the wide viewing angle reflective region to be mixed in the reflection electrode in the same display device.Type: ApplicationFiled: May 28, 2003Publication date: December 4, 2003Applicant: NEC LCD TECHNOLOGIES, LTD.Inventors: Fumihiko Fujishiro, Hironori Kikkawa, Michiaki Sakamoto
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Patent number: 6654078Abstract: The present invention provides a mounting structure for mounting a liquid crystal module to a cover of a mobile terminal. The mounting structure comprises: at least a pair of first and second engagement parts, wherein the first engagement part is provided on a side portion of the liquid crystal module, whilst the second engagement part is provided on a side portion of a structural member of the cover, so that the paired first and second engagement parts are engaged with each other only by fitting the liquid crystal module into the structural member of the cover.Type: GrantFiled: February 17, 2000Date of Patent: November 25, 2003Assignee: NEC LCD Technologies, Ltd.Inventors: Katsuhiro Kato, Masatake Baba, Michiaki Nishiyama, Fumihiko Fujishiro, Takakazu Yano, Toshihisa Ogawa, Tomoo Miwa, Yasuhiro Sato
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Patent number: 6633349Abstract: A projection type liquid crystal display unit includes (a) a first frame (13) having a first surface (15) formed with a first opening (13a), (b) a second frame (12) having a second surface formed with a second opening (12a), and (c) a liquid crystal display panel (11) sandwiched between the first and second frames (13, 12) such that an incident light passes through the second opening (12a), the liquid crystal display panel (11) and the first opening (13a) in this order. The first and second frames (13, 12) are both composed of resin, and the first surface (15) of the first frame (13) is roughened.Type: GrantFiled: February 2, 2001Date of Patent: October 14, 2003Assignees: NEC Corporation, NEC LCD Technologies, Ltd.Inventor: Fumihiko Fujishiro
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Patent number: 6611092Abstract: A flat fluorescent lamp is provided with one or more protrusions at the periphery thereof, which protrusion(s) extends outwardly beyond the edges of the two glass plates. A lamp holder receives the protrusion of the flat fluorescent lamp so as to hold the same in a manner that no edges of the two parallel glass plates touch or come into contact with the lamp holder.Type: GrantFiled: October 5, 2001Date of Patent: August 26, 2003Assignee: NEC LCD Technologies, Ltd.Inventor: Fumihiko Fujishiro
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Patent number: 6594143Abstract: The present invention provides a mounting structure for mounting a liquid crystal module having a display area. The mounting structure comprises: at least a frame member having a plurality of connecting members for connecting the frame member to the liquid crystal module substantially in parallel to each other, wherein each of the connecting members extends between the liquid crystal module and the frame member in a direction vertical to a surface of the frame member.Type: GrantFiled: December 13, 1999Date of Patent: July 15, 2003Assignee: NEC CorporationInventors: Takakazu Yano, Tomoo Miwa, Yasuhiro Sato, Toshihisa Ogawa, Michiaki Nishiyama, Masatake Baba, Hikaru Okabe, Fumihiko Fujishiro, Katsuhiro Kato, Kazuaki Mikami, Hirokazu Fukuyoshi
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Patent number: 6583556Abstract: A flat-type fluorescent lamp for LCD devices is provided, which makes it possible to narrow the picture-frame area and to widen the emission area and which facilitates their wiring, connection and assembly operations.Type: GrantFiled: November 28, 2001Date of Patent: June 24, 2003Assignee: NEC LCD Technologies, Ltd.Inventors: Toshiya Oishi, Fumihiko Fujishiro, Tsutomu Kanatsu
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Publication number: 20030095216Abstract: A light emission surface having a substantially single surface in a liquid crystal display 1 is designed so as to be opposite to a rear of a liquid crystal panel 2 or a rear of an optical member 5 through an air layer. Thus, it is possible to provide a liquid crystal display that can prevent a heat accumulation in a liquid crystal panel without any drop of brightness, and a light source device used in the liquid crystal display.Type: ApplicationFiled: November 21, 2002Publication date: May 22, 2003Applicant: NEC CorporationInventors: Fumihiko Fujishiro, Tsutomu Kanatsu, Fumio Hasegawa, Shin-Ichirou Ono, Hirokazu Fukuyoshi
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Publication number: 20030063230Abstract: The present invention provides a mounting structure for mounting a liquid crystal module to a cover of a mobile terminal. The mounting structure comprises: at least a pair of first and second engagement parts, wherein the first engagement part is provided on a side portion of the liquid crystal module, whilst the second engagement part is provided on a side portion of a structural member of the cover, so that the paired first and second engagement parts are engaged with each other only by fitting the liquid crystal module into the structural member of the cover.Type: ApplicationFiled: December 9, 2002Publication date: April 3, 2003Applicant: NEC CORPORATIONInventors: Katsuhiro Kato, Masatake Baba, Michiaki Nishiyama, Fumihiko Fujishiro, Takakazu Yano, Toshihisa Ogawa, Tomoo Miwa, Yasuhiro Sato