Patents by Inventor Kouji Tsukao
Kouji Tsukao 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: 6940579Abstract: The present invention relates to a liquid crystal display device and a defect repairing method for the same, and has an object to provide a liquid crystal display device in which a disconnection defect occurring in a storage capacitor bus line can be repaired without producing a new point defect, and a defect repairing method for the same.Type: GrantFiled: September 19, 2001Date of Patent: September 6, 2005Assignee: Sharp CorporationInventors: Kiyoshi Ozaki, Tsuyoshi Kamada, Kouji Tsukao
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Patent number: 6927824Abstract: In a vertically aligned liquid crystal display device for controlling liquid crystal molecules alignment in voltage application by providing linear structures or linear slits consisting of a plurality of constituent units to at least one of a pair of substrates having an electrode thereon, there is provided alignment controlling means for forming an alignment singular point s=?1 of liquid crystal molecules at an intersecting point between the structures on the pixel electrode or the slits in the electrode and an edge of a pixel electrode on one of the substrates.Type: GrantFiled: September 14, 2000Date of Patent: August 9, 2005Assignee: Fujitsu Display Technologies CorporationInventors: Arihiro Takeda, Yoshio Koike, Takahiro Sasaki, Kouji Tsukao, Shingo Kataoka, Kimiaki Nakamura, Yuichi Inoue, Kazutaka Hanaoka, Seiji Tanuma, Takatoshi Mayama, Hidefumi Yoshida, Yasutoshi Tasaka, Takashi Sasabayashi, Yohei Nakanishi
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Publication number: 20050140865Abstract: The invention relates to a substrate for a liquid crystal display that forms a part of a display of an information apparatus and a liquid crystal display having the same. The invention provides a substrate for a liquid crystal display which contributes to suppression of an increase in the number of manufacturing steps and an increase in a manufacturing cost and which improves the yield of manufacture, a liquid crystal display having the same, and a method of manufacturing the same.Type: ApplicationFiled: February 25, 2005Publication date: June 30, 2005Inventors: Kouji Tsukao, Tsuyoshi Kamada, Teiji Majima
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Patent number: 6897929Abstract: In a vertically aligned liquid crystal display device for controlling liquid crystal molecules alignment in voltage application by providing linear structures or linear slits consisting of a plurality of constituent units to at least one of a pair of substrates having an electrode thereon, there is provided alignment controlling means for forming an alignment singular point s=?1 of liquid crystal molecules at an intersecting point between the structures on the pixel electrode or the slits in the electrode and an edge of a pixel electrode on one of the substrates.Type: GrantFiled: September 8, 2003Date of Patent: May 24, 2005Assignee: Fujitsu Display Technologies CorporationInventors: Arihiro Takeda, Yoshio Koike, Takahiro Sasaki, Kouji Tsukao, Shingo Kataoka, Kimiaki Nakamura, Yuichi Inoue, Kazutaka Hanaoka, Seiji Tanuma, Takatoshi Mayama, Hidefumi Yoshida, Yasutoshi Tasaka, Takashi Sasabayashi, Yohei Nakanishi
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Patent number: 6888602Abstract: In a vertically aligned liquid crystal display device for controlling liquid crystal molecules alignment in voltage application by providing linear structures or linear slits consisting of a plurality of constituent units to at least one of a pair of substrates having an electrode thereon, there is provided alignment controlling means for forming an alignment singular point s=?1 of liquid crystal molecules at an intersecting point between the structures on the pixel electrode or the slits in the electrode and an edge of a pixel electrode on one of the substrates.Type: GrantFiled: April 25, 2003Date of Patent: May 3, 2005Assignee: Fujitsu Display Technologies CorporationInventors: Arihiro Takeda, Yoshio Koike, Takahiro Sasaki, Kouji Tsukao, Shingo Kataoka, Kimiaki Nakamura, Yuichi Inoue, Kazutaka Hanaoka, Seiji Tanuma, Takatoshi Mayama, Hidefumi Yoshida, Yasutoshi Tasaka, Takashi Sasabayashi, Yohei Nakanishi
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Patent number: 6873388Abstract: The invention relates to a substrate for a liquid crystal display that forms a part of a display of an information apparatus and a liquid crystal display having the same. The invention provides a substrate for a liquid crystal display which contributes to suppression of an increase in the number of manufacturing steps and an increase in a manufacturing cost and which improves the yield of manufacture, a liquid crystal display having the same, and a method of manufacturing the same.Type: GrantFiled: January 2, 2003Date of Patent: March 29, 2005Assignee: Fujitsu Display Technologies CorporationInventors: Kouji Tsukao, Tsuyoshi Kamada, Teiji Majima
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Publication number: 20050018119Abstract: In a vertically aligned liquid crystal display device for controlling liquid crystal molecules alignment in voltage application by providing linear structures or linear slits consisting of a plurality of constituent units to at least one of a pair of substrates having an electrode thereon, there is provided alignment controlling means for forming an alignment singular point s=?1 of liquid crystal molecules at an intersecting point between the structures on the pixel electrode or the slits in the electrode and an edge of a pixel electrode on one of the substrates.Type: ApplicationFiled: August 20, 2004Publication date: January 27, 2005Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATIONInventors: Arihiro Takeda, Yoshio Koike, Takahiro Sasaki, Kouji Tsukao, Shingo Kataoka, Kimiaki Nakamura, Yuichi Inoue, Kazutaka Hanaoka, Seiji Tanuma, Takatoshi Mayama, Hidefumi Yoshida, Yasutoshi Tasaka, Takashi Sasabayashi, Yohei Nakanishi
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Publication number: 20040169806Abstract: In a vertically aligned liquid crystal display device for controlling liquid crystal molecules alignment in voltage application by providing linear structures or linear slits consisting of a plurality of constituent units to at least one of a pair of substrates having an electrode thereon, there is provided alignment controlling means for forming an alignment singular point s=−1 of liquid crystal molecules at an intersecting point between the structures on the pixel electrode or the slits in the electrode and an edge of a pixel electrode on one of the substrates.Type: ApplicationFiled: March 2, 2004Publication date: September 2, 2004Applicants: Fujitsu Limited, FUJITSU DISPLAY TECHNOLOGIES CORPORATIONInventors: Arihiro Takeda, Yoshio Koike, Takahiro Sasaki, Kouji Tsukao, Shingo Kataoka, Kimiaki Nakamura, Yuichi Inoue, Kazutaka Hanaoka, Seiji Tanuma, Takatoshi Mayama, Hidefumi Shida, Yasutoshi Tasaka, Takashi Sasabayashi, Yohei Nakanishi
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Publication number: 20040119924Abstract: A vertically alignment mode liquid crystal display device having an improved viewing angle characteristic is disclosed. The disclosed liquid crystal display device uses a liquid crystal having a negative anisotropic dielectric constant, and orientations of the liquid crystal are vertical to substrates when no voltage being applied, almost horizontal when a predetermined voltage is applied, and oblique when an intermediate voltage is applied. At least one of the substrates includes a structure as domain regulating means, and inclined surfaces of the structure operate as a trigger to regulate azimuths of the oblique orientations of the liquid crystal when the intermediate voltage is applied.Type: ApplicationFiled: November 21, 2003Publication date: June 24, 2004Applicant: Fujitsu Display Technology CorporationInventors: Arihiro Takeda, Katsufumi Ohmuro, Yoshio Koike, Shingo Kataoka, Takahiro Sasaki, Takashi Sasabayashi, Hideaki Tsuda, Hideo Chida, Makoto Ohashi, Kenji Okamoto, Hisashi Yamaguchi, Minoru Otani, Makoto Morishige, Noriaki Furukawa, Tsuyoshi Kamada, Yoshinori Tanaka, Atuyuki Hoshino, Shougo Hayashi, Hideaki Takizawa, Takeshi Kinjou, Makoto Tachibanaki, Keiji Imoto, Tadashi Hasegawa, Hidefumi Yoshida, Hiroyasu Inoue, Yoji Taniguchi, Tetsuya Fujikawa, Satoshi Murata, Manabu Sawasaki, Tomonori Tanose, Siro Hirota, Masahiro Ikeda, Kunihiro Tashiro, Kouji Tsukao, Yasutoshi Tasaka, Takatoshi Mayama, Seiji Tanuma, Yohei Nakanishi
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Patent number: 6724452Abstract: A vertical alignment mode liquid crystal display device having an improved viewing angle characteristic is provided. The liquid crystal display device uses a liquid crystal having a negative anisotropic dielectric constant, and orientations of the liquid crystal are vertical to substrates when no voltage is applied, almost horizontal when a predetermined voltage is applied, and oblique when an intermediate voltage is applied. At least one of the substrates includes a structure as domain regulating means, and inclined surfaces of the structure operate as a trigger to regulate azimuths of the oblique orientations of the liquid crystal when the intermediate voltage is applied.Type: GrantFiled: June 12, 1998Date of Patent: April 20, 2004Assignee: Fujitsu Display Technologies CorporationInventors: Arihiro Takeda, Katsufumi Ohmuro, Yoshio Koike, Shingo Kataoka, Takahiro Sasaki, Takashi Sasabayashi, Hideaki Tsuda, Hideo Chida, Makoto Ohashi, Kenji Okamoto, Hisashi Yamaguchi, Minoru Otani, Makoto Morishige, Noriaki Furukawa, Tsuyoshi Kamada, Yoshinori Tanaka, Atuyuki Hoshino, Shougo Hayashi, Hideaki Takizawa, Takeshi Kinjou, Makoto Tachibanaki, Keiji Imoto, Tadashi Hasegawa, Hidefumi Yoshida, Hiroyasu Inoue, Yoji Taniguchi, Tetsuya Fujikawa, Satoshi Murata, Manabu Sawasaki, Tomonori Tanose, Siro Hirota, Masahiro Ikeda, Kunihiro Tashiro, Kouji Tsukao, Yasutoshi Tasaka, Takatoshi Mayama, Seiji Tanuma, Yohei Nakanishi
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Patent number: 6717648Abstract: A defect correcting method for a liquid crystal panel is disclosed, comprising the step of, when a plurality of pixels are connected, cutting off pixel electrodes of other pixels from a signal supply line in such a way as to drive the other pixels by a TFT of a pixel having a color filter of a highest light transmittance among the plurality of pixels. Another defect correcting method for a liquid crystal panel is disclosed, the liquid crystal panel including a correcting wiring formed beforehand to connect pixels adjacent to each other, comprising the step of: when a defective pixel occurs, electrically connecting a pixel electrode of the defective pixel to that of a pixel adjacent to the defective pixel.Type: GrantFiled: February 12, 2001Date of Patent: April 6, 2004Assignee: Fujitsu Display Technologies CorporationInventor: Kouji Tsukao
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Publication number: 20040046915Abstract: In a vertically aligned liquid crystal display device for controlling liquid crystal molecules alignment in voltage application by providing linear structures or linear slits consisting of a plurality of constituent units to at least one of a pair of substrates having an electrode thereon, there is provided alignment controlling means for forming an alignment singular point s=−1 of liquid crystal molecules at an intersecting point between the structures on the pixel electrode or the slits in the electrode and an edge of a pixel electrode on one of the substrates.Type: ApplicationFiled: September 8, 2003Publication date: March 11, 2004Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATIONInventors: Arihiro Takeda, Yoshio Koike, Takahiro Sasaki, Kouji Tsukao, Shingo Kataoka, Kimiaki Nakamura, Yuichi Inoue, Kazutaka Hanaoka, Seiji Tanuma, Takatoshi Mayama, Hidefumi Yoshida, Yasutoshi Tasaka, Takashi Sasabayashi, Yohei Nakanishi
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Patent number: 6661488Abstract: A vertically alignment mode liquid crystal display device having an improved viewing angle characteristic is disclosed. The disclosed liquid crystal display device uses a liquid crystal having a negative anisotropic dielectric constant, and orientations of the liquid crystal are vertical to substrates when no voltage being applied, almost horizontal when a predetermined voltage is applied, and oblique when an intermediate voltage is applied. At least one of the substrates includes a structure as domain regulating means, and inclined surfaces of the structure operate as a trigger to regulate azimuths of the oblique orientations of the liquid crystal when the intermediate voltage is applied.Type: GrantFiled: September 18, 2000Date of Patent: December 9, 2003Assignee: Fujitsu LimitedInventors: Arihiro Takeda, Katsufumi Ohmuro, Yoshio Koike, Shingo Kataoka, Takahiro Sasaki, Takashi Sasabayashi, Hideaki Tsuda, Hideo Chida, Makoto Ohashi, Kenji Okamoto, Hisashi Yamaguchi, Minoru Otani, Makoto Morishige, Noriaki Furukawa, Tsuyoshi Kamada, Yoshinori Tanaka, Atuyuki Hoshino, Shougo Hayashi, Hideaki Takizawa, Takeshi Kinjou, Makoto Tachibanaki, Keiji Imoto, Tadashi Hasegawa, Hidefumi Yoshida, Hiroyasu Inoue, Yoji Taniguchi, Tetsuya Fujikawa, Satoshi Murata, Manabu Sawasaki, Tomonori Tanose, Siro Hirota, Masahiro Ikeda, Kunihiro Tashiro, Kouji Tsukao, Yasutoshi Tasaka, Takatoshi Mayama, Seiji Tanuma, Yohei Nakanishi
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Publication number: 20030202146Abstract: In a vertically aligned liquid crystal display device for controlling liquid crystal molecules alignment in voltage application by providing linear structures or linear slits consisting of a plurality of constituent units to at least one of a pair of substrates having an electrode thereon, there is provided alignment controlling means for forming an alignment singular point s=−1 of liquid crystal molecules at an intersecting point between the structures on the pixel electrode or the slits in the electrode and an edge of a pixel electrode on one of the substrates.Type: ApplicationFiled: April 25, 2003Publication date: October 30, 2003Applicants: Fujitsu Limited, Fujitsu Display Technologies CorporationInventors: Arihiro Takeda, Yoshio Koike, Takahiro Sasaki, Kouji Tsukao, Shingo Kataoka, Kimiaki Nakamura, Yuichi Inoue, Kazutaka Hanaoka, Seiji Tanuma, Takatoshi Mayama, Hidefumi Yoshida, Yasutoshi Tasaka, Takashi Sasabayashi, Yohei Nakanishi
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Publication number: 20030156231Abstract: The invention relates to a substrate for a liquid crystal display that forms a part of a display of an information apparatus and a liquid crystal display having the same. The invention provides a substrate for a liquid crystal display which contributes to suppression of an increase in the number of manufacturing steps and an increase in a manufacturing cost and which improves the yield of manufacture, a liquid crystal display having the same, and a method of manufacturing the same.Type: ApplicationFiled: January 2, 2003Publication date: August 21, 2003Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATIONInventors: Kouji Tsukao, Tsuyoshi Kamada, Teiji Majima
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Patent number: 6476881Abstract: To provide a liquid crystal display device which allows disconnection defects caused in the manufacturing process to be readily repaired with a higher success rate than conventional cases so that the device can be modified into a non-defective device, and a defect repairing method therefor. In a liquid crystal display device having a lead-out portion provided at a lowermost layer bus line 1 formed on a transparent insulating substrate 6, and a pixel electrode layer 3 formed on the lead-out portion through insulating layers 2, 4, an independent intermediate conductive layer 5 is formed between the lead-out portion and said pixel electrode layer 3.Type: GrantFiled: February 6, 2001Date of Patent: November 5, 2002Assignee: Fujitsu LimitedInventors: Kiyoshi Ozaki, Kouji Tsukao, Satoru Kawai
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Publication number: 20020131010Abstract: The present invention relates to a liquid crystal display device and a defect repairing method for the same, and has an object to provide a liquid crystal display device in which a disconnection defect occurring in a storage capacitor bus line can be repaired without producing a new point defect, and a defect repairing method for the same.Type: ApplicationFiled: September 19, 2001Publication date: September 19, 2002Applicant: FUJITSU LIMITEDInventors: Kiyoshi Ozaki, Tsuyoshi Kamada, Kouji Tsukao
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Publication number: 20010050730Abstract: A defect correcting method for a liquid crystal panel is disclosed, comprising the step of, when a plurality of pixels are connected, cutting off pixel electrodes of other pixels from a signal supply line in such a way as to drive the other pixels by a TFT of a pixel having a color filter of a highest light transmittance among the plurality of pixels. Another defect correcting method for a liquid crystal panel is disclosed, the liquid crystal panel including a correcting wiring formed beforehand to connect pixels adjacent to each other, comprising the step of: when a defective pixel occurs, electrically connecting a pixel electrode of the defective pixel to that of a pixel adjacent to the defective pixel.Type: ApplicationFiled: February 12, 2001Publication date: December 13, 2001Applicant: FUJITSU LIMITEDInventor: Kouji Tsukao
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Publication number: 20010028417Abstract: To provide a liquid crystal display device which allows disconnection defects caused in the manufacturing process to be readily repaired with a higher success rate than conventional cases so that the device can be modified into a non-defective device, and a defect repairing method therefor. In a liquid crystal display device having a lead-out portion provided at a lowermost layer bus line 1 formed on a transparent insulating substrate 6, and a pixel electrode layer 3 formed on the lead-out portion through insulating layers 2, 4, an independent intermediate conductive layer 5 is formed between the lead-out portion and said pixel electrode layer 3.Type: ApplicationFiled: February 6, 2001Publication date: October 11, 2001Applicant: FUJITSU LIMITEDInventors: Kiyoshi Ozaki, Kouji Tsukao, Satoru Kawai
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Patent number: 5943106Abstract: A plurality of control and data bus lines are formed on the surface of an insulating substrate. A pixel electrode and a switching element are formed at an area corresponding to each interconnection portion between the control and data bus lines. A plurality of capacitor bus lines are formed on the surface of the interlayer insulating substrate for forming an auxiliary capacitor between the pixel electrode and capacitor bus line. The capacitor bus line has an auxiliary capacitor pattern branching from the capacitor bus line and extending along the data bus line. This auxiliary capacitor pattern is constituted of a cutting portion and a remaining main portion. A space between the cutting portion and a corresponding data bus line is broader than that between the main portion and the corresponding data bus line.Type: GrantFiled: July 29, 1997Date of Patent: August 24, 1999Assignee: Fujitsu LimitedInventors: Hidetoshi Sukenori, Kouji Tsukao, Kenichi Nagaoka