Patents by Inventor Junichi Ohwada
Junichi Ohwada 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: 7359024Abstract: A liquid crystal display device includes first and second substrates with a liquid crystal layer therebetween, and a transparent conductor which is formed at a liquid crystal side of at least one of the first and the second substrates. At least a projected portion is formed on the transparent conductor in a pixel region, and a material of the projected portion is different from a material of the transparent conductor.Type: GrantFiled: February 9, 2005Date of Patent: April 15, 2008Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd.Inventors: Masumi Sasuga, Junichi Ohwada, Akira Kobayashi, Masaru Fujita, Hiroshi Nakamoto, Ryu Ono, Tsutomu Isono
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Publication number: 20080062348Abstract: A liquid crystal display device includes a metal case having a display window, a frame member made of synthetic resin, a liquid crystal display panel disposed between the metal case and the frame member, an integrated circuit chip driving the liquid crystal display panel, and disposed between the metal case and the frame member, a first print circuit board, and a second print circuit board electrically connected to the first print circuit board, and a flexible wiring substrate connected to the liquid crystal display panel and the first print circuit board. The first print circuit board includes at least one ground pad which is connected to the metal case, and the second print circuit board includes a power supply circuit and a connector connected to an external member of the liquid crystal display device, and supplies power to the first print circuit board via a flat cable.Type: ApplicationFiled: October 29, 2007Publication date: March 13, 2008Inventors: Masumi SASUGA, Junichi OHWADA, Akira KOBAYASHI, Masaru FUJITA, Hiroshi NAKAMOTO, Ryu ONO, Tsutomu ISONO
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Patent number: 7262822Abstract: A liquid crystal display device which includes a liquid crystal display panel, a metal shield casing covering a periphery of the liquid crystal display panel, a plurality of fluorescent lamps arranged below the liquid crystal panel, a back light support supporting the plurality of fluorescent lamps, and a lower casing fixed to the metal shield casing. The back light support is fixed in the lower casing and comprises a plurality of slits, wherein one end of the plurality of fluorescent lamps is disposed with respect to a respective one of the plurality of slits.Type: GrantFiled: October 12, 2005Date of Patent: August 28, 2007Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd.Inventors: Masumi Sasuga, Junichi Ohwada, Akira Kobayashi, Masaru Fujita, Hiroshi Nakamoto, Ryu Ono, Tsutomu Isono
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Publication number: 20060033872Abstract: A liquid crystal display device which includes a liquid crystal display panel, a metal shield casing covering a periphery of the liquid crystal display panel, a plurality of fluorescent lamps arranged below the liquid crystal panel, a back light support supporting the plurality of fluorescent lamps, and a lower casing fixed to the metal shield casing. The back light support is fixed in the lower casing and comprises a plurality of slits, wherein one end of the plurality of fluorescent lamps is disposed with respect to a respective one of the plurality of slits.Type: ApplicationFiled: October 12, 2005Publication date: February 16, 2006Inventors: Masumi Sasuga, Junichi Ohwada, Akira Kobayashi, Masaru Fujita, Hiroshi Nakamoto, Ryu Ono, Tsutomu Isono
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Publication number: 20050157241Abstract: A liquid crystal display device includes first and second substrates with a liquid crystal layer therebetween, and a transparent conductor which is formed at a liquid crystal side of at least one of the first and the second substrates. At least a projected portion is formed on the transparent conductor in a pixel region, and a material of the projected portion is different from a material of the transparent conductor.Type: ApplicationFiled: February 9, 2005Publication date: July 21, 2005Inventors: Masumi Sasuga, Junichi Ohwada, Akira Kobayashi, Masaru Fujita, Hiroshi Nakamoto, Ryu Ono, Tsutomu Isono
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Patent number: 6862068Abstract: A liquid crystal display device includes a first substrate. A second substrate is facing the first substrate. A liquid crystal layer is interposed between the first and second substrates. At least one pixel area is defined by a plurality of gate lines and a plurality of drain lines arranged in a matrix over the first substrate, wherein the plurality of gate lines are extending in a first direction, and the plurality of drain lines are extending in a second direction. A first electrode is assigned to the pixel area, wherein the first electrode is provided over the first substrate. A second electrode is assigned to the pixel area and is facing the first electrode, wherein the second electrode is provided over the first substrate and is transparent. The second electrode has a solid portion and a hollow portion. The hollow portion is superposed to at least a portion of the first electrode. An insulating layer is provided between the first and second electrodes.Type: GrantFiled: September 15, 2003Date of Patent: March 1, 2005Assignee: Hitachi, Ltd.Inventors: Masuyuki Ohta, Junichi Ohwada, Nobutake Konishi, Masayuki Hikiba
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Patent number: 6856362Abstract: A liquid crystal display device includes a liquid crystal display panel and a metal shield casing which covers a periphery of the liquid crystal display panel. The metal shield casing has a plurality of fixing pawls and a plurality of fixing hooks.Type: GrantFiled: August 15, 2002Date of Patent: February 15, 2005Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd.Inventors: Masumi Sasuga, Junichi Ohwada, Akira Kobayashi, Masaru Fujita, Hiroshi Nakamoto, Ryu Ono, Tsutomu Isono
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Publication number: 20040189923Abstract: A liquid crystal display device having a pair of substrates and a liquid crystal layer interposed between the pair of substrates. One of the pair of substrates includes a plurality of scanning electrodes, a plurality of signal electrodes, a plurality of thin film transistors arranged in the vicinity of crossing points of the scanning electrodes and the signal electrodes, a plurality of common electrodes, and a plurality of pixel electrodes arranged between each of the common electrodes. The other of the pair of substrates has color filters, an insulating film for flattening the color filters directly arranged on the color filters, and an orientation control film arranged on the insulating film.Type: ApplicationFiled: April 7, 2004Publication date: September 30, 2004Inventors: Katsumi Kondo, Hiromu Terao, Hidetoshi Abe, Masuyuki Ohta, Kenichi Suzuki, Tohru Sasaki, Genshiro Kawachi, Junichi Ohwada
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Patent number: 6724455Abstract: A liquid crystal display device having a pair of substrates with a liquid crystal layer interposed between the pair of substrates. One of the pair of substrates includes a plurality of scanning electrodes, a plurality of signal electrodes arranged so as to cross the plurality of scanning electrodes, a plurality of thin film transistors arranged in the vicinity of crossing points of the scanning electrodes and the signal electrodes, a plurality of common electrodes, and a plurality of pixel electrodes arranged between each of the common electrodes. An electric field is formed in the liquid crystal layer by applying a voltage to the pixel electrodes and the plurality of common electrodes. The other substrate of the pair of substrates includes color filters, an insulating film for flattening the color filters arranged on the color filters, and an orientation control film arranged on the insulating film.Type: GrantFiled: January 17, 2002Date of Patent: April 20, 2004Assignee: Hitachi, Ltd.Inventors: Katsumi Kondo, Hiromu Terao, Hidetoshi Abe, Masuyuki Ohta, Kenkichi Suzuki, Tohru Sasaki, Genshiro Kawachi, Junichi Ohwada
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Publication number: 20040061824Abstract: A liquid crystal display device includes a first substrate. A second substrate is facing the first substrate. A liquid crystal layer is interposed between the first and second substrates. At least one pixel area is defined by a plurality of gate lines and a plurality of drain lines arranged in a matrix over the first substrate, wherein the plurality of gate lines are extending in a first direction, and the plurality of drain lines are extending in a second direction. A first electrode is assigned to the pixel area, wherein the first electrode is provided over the first substrate. A second electrode is assigned to the pixel area and is facing the first electrode, wherein the second electrode is provided over the first substrate and is transparent. The second electrode has a solid portion and a hollow portion. The hollow portion is superposed to at least a portion of the first electrode. An insulating layer is provided between the first and second electrodes.Type: ApplicationFiled: September 15, 2003Publication date: April 1, 2004Applicant: HITACHI, LTD.Inventors: Masuyuki Ohta, Junichi Ohwada, Nobutake Konishi, Masayuki Hikiba
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Patent number: 6650388Abstract: A liquid crystal display device includes a first substrate. A second substrate is facing the first substrate. A liquid crystal layer is interposed between the first and second substrates. At least one pixel area is defined by a plurality of gate lines and a plurality of drain lines arranged in a matrix over the first substrate, wherein the plurality of gate lines are extending in a first direction, and the plurality of drain lines are extending in a second direction. A first electrode is assigned to the pixel area, wherein the first electrode is provided over the first substrate. A second electrode is assigned to the pixel area and is facing the first electrode, wherein the second electrode is provided over the first substrate and is transparent. The second electrode has a solid portion and a hollow portion. The hollow portion is superposed to at least a portion of the first electrode. An insulating layer is provided between the first and second electrodes.Type: GrantFiled: January 11, 2001Date of Patent: November 18, 2003Assignee: Hitachi, Ltd.Inventors: Masuyuki Ohta, Junichi Ohwada, Nobutake Konishi, Masayuki Hikiba
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Publication number: 20020191126Abstract: A liquid crystal display device includes a liquid crystal display panel and a metal shield casing which covers a periphery of the liquid crystal display panel. The metal shield casing has a plurality of fixing pawls and a plurality of fixing hooks.Type: ApplicationFiled: August 15, 2002Publication date: December 19, 2002Inventors: Masumi Sasuga, Junichi Ohwada, Akira Kobayashi, Masaru Fujita, Hiroshi Nakamoto, Ryu Ono, Tsutomu Isono
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Patent number: 6466282Abstract: A liquid crystal display device including a liquid crystal display panel, a first driver circuit substrate, a second driver unit substrate and a flexible connector. The first driver circuit substrate provides electrical connection for at least one driver chip for the liquid crystal display panel with the first driver circuit being disposed at a peripheral portion of the liquid crystal display panel. The second driver circuit substrate has at least a connector to be connected with an external circuit with the second driver circuit substrate being disposed in superposed relation to at least a portion of the first driver circuit substrate. The flexible connector electrically connects at least a part of the first driver circuit substrate to at least a part of the second driver substrate.Type: GrantFiled: January 18, 2001Date of Patent: October 15, 2002Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd.Inventors: Masumi Sasuga, Junichi Ohwada, Akira Kobayashi, Masaru Fujita, Hiroshi Nakamoto, Ryu Ono, Tsutomu Isono
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Patent number: 6407792Abstract: A liquid crystal display device includes a first substrate and a second substrate facing the first substrate. A liquid crystal layer is provided between the first and second substrates. First and second gate lines are extending in a first direction, and first and second drain lines are extending in a second direction. A pixel area is defined by the gate lines and drain lines. A counter electrode assigned to the pixel area and having a hollow portion is provided adjacent to a solid portion. The hollow and solid portions are extending in the second direction. One hollow portion is provided after N number of the solid portions, the N being a number equal to or greater than 3. A pixel electrode is assigned to the pixel area and is opposing the counter electrode. The pixel electrode has a connecting portion extending in the first direction and first and second extending portions extending in the second direction.Type: GrantFiled: March 30, 2001Date of Patent: June 18, 2002Assignee: Hitachi, Ltd.Inventors: Masuyuki Ohta, Junichi Ohwada, Nobutake Konishi, Masayuki Hikiba
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Publication number: 20020063822Abstract: A liquid crystal display device having a pair of substrates with a liquid crystal layer interposed between the pair of substrates. One of the pair of substrates includes a plurality of scanning electrodes, a plurality of signal electrodes arranged so as to cross the plurality of scanning electrodes, a plurality of thin film transistors arranged in the vicinity of crossing points of the scanning electrodes and the signal electrodes, a plurality of common electrodes, and a plurality of pixel electrodes arranged between each of the common electrodes. An electric field is formed in the liquid crystal layer by applying a voltage to the pixel electrodes and the plurality of common electrodes. The other substrate of the pair of substrates includes color filters, an insulating film for flattening the color filters arranged on the color filters, and an orientation control film arranged on the insulating film.Type: ApplicationFiled: January 17, 2002Publication date: May 30, 2002Inventors: Katsumi Kondo, Hiromu Terao, Hidetoshi Abe, Masuyuki Ohta, Kenkichi Suzuki, Tohru Sasaki, Genshiro Kawachi, Junichi Ohwada
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Patent number: 6341004Abstract: A liquid crystal display device including a pair of substrates, a liquid crystal layer interposed between the pair of substrates, a plurality of first common electrodes extending in a direction and being formed on one substrate of the pair of substrates, and a second common electrode connected to one of the first common electrodes. The second common electrode has a first edge adjacent the one of the first common electrodes and a second edge opposite to the one of the first common electrode. A first pixel electrode is formed between two of the first common electrodes and extends in the same direction as the first common electrodes. A second pixel electrode overlaps the second common electrode, is connected to the first pixel electrode, and covers at least a portion of the first edge of the second common electrode.Type: GrantFiled: April 5, 2000Date of Patent: January 22, 2002Assignee: Hitachi, Ltd.Inventors: Katsumi Kondo, Hiromu Terao, Hidetoshi Abe, Masuyuki Ohta, Kenkichi Suzuki, Tohru Sasaki, Genshiro Kawachi, Junichi Ohwada
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Publication number: 20010012087Abstract: A liquid crystal display device including a liquid crystal display panel, a first driver circuit substrate, a second driver unit substrate and a flexible connector. The first driver circuit substrate provides electrical connection for at least one driver chip for the liquid crystal display panel with the first driver circuit being disposed at a peripheral portion of the liquid crystal display panel. The second driver circuit substrate has at least a connector to be connected with an external circuit with the second driver circuit substrate being disposed in superposed relation to at least a portion of the first driver circuit substrate. The flexible connector electrically connects at least a part of the first driver circuit substrate to at least a part of the second driver substrate.Type: ApplicationFiled: January 18, 2001Publication date: August 9, 2001Inventors: Masumi Sasuga, Junichi Ohwada, Akira Kobayashi, Masaru Fujita, Hiroshi Nakamoto, Ryu Ono, Tsutomu Isono
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Publication number: 20010012086Abstract: A liquid crystal display device includes a first substrate and a second substrate facing the first substrate. A liquid crystal layer is provided between the first and second substrates. First and second gate lines are extending in a first direction, and first and second drain lines are extending in a second direction. A pixel area is defined by the gate lines and drain lines. A counter electrode assigned to the pixel area and having a hollow portion is provided adjacent to a solid portion. The hollow and solid portions are extending in the second direction. One hollow portion is provided after N number of the solid portions, the N being a number equal to or greater than 3. A pixel electrode is assigned to the pixel area and is opposing the counter electrode. The pixel electrode has a connecting portion extending in the first direction and first and second extending portions extending in the second direction.Type: ApplicationFiled: March 30, 2001Publication date: August 9, 2001Inventors: Masuyuki Ohta, Junichi Ohwada, Nobutake Konishi, Masayuki Hikiba
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Publication number: 20010007490Abstract: A liquid crystal display device includes a first substrate. A second substrate is facing the first substrate. A liquid crystal layer is interposed between the first and second substrates. At least one pixel area is defined by a plurality of gate lines and a plurality of drain lines arranged in a matrix over the first substrate, wherein the plurality of gate lines are extending in a first direction, and the plurality of drain lines are extending in a second direction. A first electrode is assigned to the pixel area, wherein the first electrode is provided over the first substrate. A second electrode is assigned to the pixel area and is facing the first electrode, wherein the second electrode is provided over the first substrate and is transparent. The second electrode has a solid portion and a hollow portion. The hollow portion is superposed to at least a portion of the first electrode. An insulating layer is provided between the first and second electrodes.Type: ApplicationFiled: January 11, 2001Publication date: July 12, 2001Applicant: HITACHI LTD.Inventors: Masuyuki Ohta, Junichi Ohwada, Nobutake Konishi, Masayuki Hikiba
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Patent number: 6195148Abstract: A liquid crystal display device including a liquid crystal display panel, a first driver circuit substrate, a second driver unit substrate and a flexible connector. The first driver circuit substrate provides electrical connection for at least one driver chip for the liquid crystal display panel with the first driver circuit being disposed at a peripheral portion of the liquid crystal display panel. The second driver circuit substrate has at least a connector to be connected with an external circuit with the second driver circuit substrate being disposed in superposed relation to at least a portion of the first driver circuit substrate. The flexible connector electrically connects at least a part of the first driver circuit substrate to at least a part of the second driver substrate.Type: GrantFiled: November 2, 1998Date of Patent: February 27, 2001Assignee: Hitachi, Ltd.Inventors: Masumi Sasuga, Junichi Ohwada, Akira Kobayashi, Masaru Fujita, Hiroshi Nakamoto, Ryu Ono, Tsutomu Isono