Patents by Inventor Nobuyoshi Nagashima
Nobuyoshi Nagashima 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: 11740524Abstract: A liquid crystal display device includes an active matrix substrate, a counter substrate, a liquid crystal layer, and a sealing portion. The active matrix substrate includes a substrate, a gate wiring line drive circuit monolithically formed on the substrate, a capacitance element supported by the substrate and provided at least partially overlapping the sealing portion when viewed from a direction normal to a display surface, the capacitance element including a first capacitance electrode, a second capacitance electrode disposed opposite the first capacitance electrode and between the first capacitance electrode and the sealing portion, and a dielectric layer located between the first capacitance electrode and the second capacitance electrode, and a transparent electrode formed of a transparent conductive material, disposed between the capacitance element and the sealing portion, and electrically connected to the second capacitance electrode.Type: GrantFiled: November 9, 2022Date of Patent: August 29, 2023Assignee: Sharp Display Technology CorporationInventors: Tatsuya Nakamoto, Takashi Nakao, Nobuyoshi Nagashima, Hidetoshi Nakagawa
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Publication number: 20230152644Abstract: A liquid crystal display device includes an active matrix substrate, a counter substrate, a liquid crystal layer, and a sealing portion. The active matrix substrate includes a substrate, a gate wiring line drive circuit monolithically formed on the substrate, a capacitance element supported by the substrate and provided at least partially overlapping the sealing portion when viewed from a direction normal to a display surface, the capacitance element including a first capacitance electrode, a second capacitance electrode disposed opposite the first capacitance electrode and between the first capacitance electrode and the sealing portion, and a dielectric layer located between the first capacitance electrode and the second capacitance electrode, and a transparent electrode formed of a transparent conductive material, disposed between the capacitance element and the sealing portion, and electrically connected to the second capacitance electrode.Type: ApplicationFiled: November 9, 2022Publication date: May 18, 2023Inventors: Tatsuya NAKAMOTO, Takashi NAKAO, Nobuyoshi NAGASHIMA, Hidetoshi NAKAGAWA
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Patent number: 10916211Abstract: Provided are a method for correcting luminance nonuniformity of a liquid crystal display apparatus and a correction data generation device. Included are setting a voltage of a counter electrode to a specific counter voltage and capturing an image of a display screen; capturing each image of the display screen while increasing and decreasing the voltage of the counter electrode by a predetermined voltage; detecting a luminance value for each of a plurality of regions of the display screen each time an image is captured; determining a correction voltage for each of the region, for correcting a deviation of the counter voltage, based on a luminance value detected without varying a voltage of the counter electrode and luminance values each detected while increasing and decreasing a voltage of the counter electrode and superimposing a determined correction voltage on the data signal having an amplitude corresponding to a grayscale value.Type: GrantFiled: September 27, 2016Date of Patent: February 9, 2021Assignee: SAKAI DISPLAY PRODUCTS CORPORATIONInventor: Nobuyoshi Nagashima
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Publication number: 20200335054Abstract: Provided are a method for correcting luminance nonuniformity of a liquid crystal display apparatus and a correction data generation device. Included are setting a voltage of a counter electrode to a specific counter voltage and capturing an image of a display screen; capturing each image of the display screen while increasing and decreasing the voltage of the counter electrode by a predetermined voltage; detecting a luminance value for each of a plurality of regions of the display screen each time an image is captured; determining a correction voltage for each of the region, for correcting a deviation of the counter voltage, based on a luminance value detected without varying a voltage of the counter electrode and luminance values each detected while increasing and decreasing a voltage of the counter electrode and superimposing a determined correction voltage on the data signal having an amplitude corresponding to a grayscale value.Type: ApplicationFiled: September 27, 2016Publication date: October 22, 2020Applicant: Sakai Display Products CorporationInventor: Nobuyoshi NAGASHIMA
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Patent number: 10665188Abstract: A liquid-crystal display apparatus and a method for driving liquid-crystal display apparatus are provided. Pixels arrayed in a form of a matrix are each defined so as to include an electrode pair consisting of a pixel electrode and a counter electrode facing one another via a liquid-crystal layer, and a scan signal is applied, from a scan-signal line for each line, to a control electrode of a TFT for applying a data signal to the pixel electrode included in the pixel. A signal to be raised when the scan signal for each line falls is applied to a signal line arranged between a pixel in each line and a pixel adjacent to the pixel at one side in the line direction.Type: GrantFiled: April 18, 2016Date of Patent: May 26, 2020Assignee: Sakai Display Products CorporationInventors: Kentaro Irie, Masae Kitayama, Nobuyoshi Nagashima
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Publication number: 20190103066Abstract: A liquid-crystal display apparatus and a method for driving liquid-crystal display apparatus are provided. Pixels arrayed in a form of a matrix are each defined so as to include an electrode pair consisting of a pixel electrode and a counter electrode facing one another via a liquid-crystal layer, and a scan signal is applied, from a scan-signal line for each line, to a control electrode of a TFT for applying a data signal to the pixel electrode included in the pixel. A signal to be raised when the scan signal for each line falls is applied to a signal line arranged between a pixel in each line and a pixel adjacent to the pixel at one side in the line direction.Type: ApplicationFiled: April 18, 2016Publication date: April 4, 2019Inventors: Kentaro IRIE, Masae KITAYAMA, Nobuyoshi NAGASHIMA
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Patent number: 8674919Abstract: Each picture element includes first and second sub-picture elements, each of which includes a liquid crystal capacitor and at least one storage capacitor. After a display voltage representing a certain grayscale level has been applied to the respective sub-picture element electrodes of the first and second sub-picture elements, a voltage difference ?V? is produced between voltages to be applied to the respective liquid crystal capacitors of the first and second sub-picture elements by way of their associated storage capacitor(s). By setting the voltage difference ?V? value of the blue and/or cyan picture element(s) to be smaller than that of the other color picture elements, shift toward the yellow range at an oblique viewing angle can be minimized.Type: GrantFiled: July 17, 2012Date of Patent: March 18, 2014Assignee: Sharp Kabushiki KaishaInventors: Fumikazu Shimoshikiryoh, Kentaroh Irie, Masanori Takeuchi, Nobuyoshi Nagashima, Toshihide Tsubata
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Publication number: 20130027525Abstract: The liquid crystal display device (100) according to the present invention performs display in a stereoscopic display mode. In each of the plurality of pixels in the liquid crystal display device (100), left-eye image data and right-eye image data are alternately written every two successive vertical scanning periods. Each of the plurality of pixels exhibits the same polarity over the two vertical scanning periods in which left-eye image data is written, and exhibits the same polarity over the two vertical scanning periods in which the right-eye image data is written. Accordingly, the liquid crystal display device (100) performs stereoscopic display with suppressed display unevenness.Type: ApplicationFiled: April 7, 2011Publication date: January 31, 2013Applicant: SHARP KABUSHIKI KAISHAInventors: Masae Kitayama, Fumikazu Shimoshikiryoh, Atsushi Ban, Nobuyoshi Nagashima, Kazuyoshi Fujioka, Shinji Shinjo, Takayuki Nagaoka, Kenichi Hyohdoh
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Patent number: 8358292Abstract: It is possible to implement impulse display in a hold type display device while suppressing an increase in complexity of a drive circuit and an increase in operation frequency. In an active matrix type liquid crystal display device of a dot-inversion drive scheme which is configured such that adjacent source lines are short-circuited during a predetermined period Tsh every horizontal scanning period, a gate driver applies a pulse for turning on a TFT in a pixel forming section, as a scanning signal G(j) (j=1 to m) to be provided to each scanning signal line as follows. In each, frame period, a pixel data write pulse Pw is sequentially applied to gate lines GL1 to GLm and a black voltage application pulse Pb is applied during the above-described predetermined period Tsh which is after the lapse of a period (Thd) of the order of a ? frame from the application of the pixel data write pulse Pw to each gate line GLj. The present invention is suitable for use in an active matrix type liquid crystal display device.Type: GrantFiled: July 4, 2006Date of Patent: January 22, 2013Assignee: Sharp Kabushiki KaishaInventor: Nobuyoshi Nagashima
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Publication number: 20120281168Abstract: Each picture element includes first and second sub-picture elements, each of which includes a liquid crystal capacitor and at least one storage capacitor. After a display voltage representing a certain grayscale level has been applied to the respective sub-picture element electrodes of the first and second sub-picture elements, a voltage difference ?V? is produced between voltages to be applied to the respective liquid crystal capacitors of the first and second sub-picture elements by way of their associated storage capacitor(s). By setting the voltage difference ?V? value of the blue and/or cyan picture element(s) to be smaller than that of the other color picture elements, shift toward the yellow range at an oblique viewing angle can be minimized.Type: ApplicationFiled: July 17, 2012Publication date: November 8, 2012Applicant: Sharp Kabushiki KaishaInventors: Fumikazu SHIMOSHIKIRYOH, Kentaroh IRIE, Masanori TAKEUCHI, Nobuyoshi NAGASHIMA, Toshihide TSUBATA
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Patent number: 8077284Abstract: The present invention is a substrate for a display device comprising an active matrix substrate and an opposed substrate which are opposed to each other with a display medium layer interposed therebetween, said active matrix substrate including a pixel electrode arranged in a matrix shape on the side of the display medium layer and said opposed substrate including a common electrode opposing to the pixel electrode on the side of the display medium layer, wherein said substrate for a display device includes an electrode slit formed in one of the pixel electrode and the common electrode; and at least one of the electrical connecting portions of said electrode slit is provided outside of a light-blocking region.Type: GrantFiled: September 12, 2008Date of Patent: December 13, 2011Assignee: Sharp Kabushiki KaishaInventors: Hidetoshi Nakagawa, Toshihide Tsubata, Nobuyoshi Nagashima, Yuhko Hisada
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Patent number: 7973871Abstract: The present invention provides an active matrix substrate of comprising on the substrate: a plurality of scanning signal lines and data signal lines; a thin film transistor provided at an intersecting point of the signal lines and comprising a gate electrode connected to the scanning signal line, a source electrode connected to the data signal line; and a pixel electrode electrically connected to a drain electrode of the thin film transistor, wherein the active matrix substrate comprises a structure having an at least partly multilinear data signal line and an interconnection electrode for correction.Type: GrantFiled: May 27, 2005Date of Patent: July 5, 2011Assignee: Sharp Kabushiki KaishaInventors: Toshifumi Yagi, Masanori Takeuchi, Toshihide Tsubata, Nobuyoshi Nagashima, Akira Yamaguchi
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Publication number: 20100182345Abstract: Each picture element includes first and second sub-picture elements, each of which includes a liquid crystal capacitor and at least one storage capacitor. After a display voltage representing a certain grayscale level has been applied to the respective sub-picture element electrodes of the first and second sub-picture elements, a voltage difference ?V? is produced between voltages to be applied to the respective liquid crystal capacitors of the first and second sub-picture elements by way of their associated storage capacitor(s). By setting the voltage difference ?V? value of the blue and/or cyan picture element(s) to be smaller than that of the other color picture elements, shift toward the yellow range at an oblique viewing angle can be minimized.Type: ApplicationFiled: August 9, 2007Publication date: July 22, 2010Inventors: Fumikazu Shimoshikiryoh, Kentaroh Irie, Masanori Takeuchi, Nobuyoshi Nagashima, Toshihide Tsubata
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Patent number: 7728943Abstract: The present invention is a substrate for a display device comprising an active matrix substrate and an opposed substrate which are opposed to each other with a display medium layer interposed therebetween, said active matrix substrate including a pixel electrode arranged in a matrix shape on the side of the display medium layer and said opposed substrate including a common electrode opposing to the pixel electrode on the side of the display medium layer, wherein said substrate for a display device includes an electrode slit formed in one of the pixel electrode and the common electrode; and at least one of the electrical connecting portions of said electrode slit is provided outside of a light-blocking region.Type: GrantFiled: May 20, 2005Date of Patent: June 1, 2010Assignee: Sharp Kabushiki KaishaInventors: Hidetoshi Nakagawa, Toshihide Tsubata, Nobuyoshi Nagashima, Yuhko Hisada
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Publication number: 20090244428Abstract: A substrate for a display device includes an active matrix substrate and an opposed substrate which are opposed to each other with a display medium layer interposed there between. The active matrix substrate includes a pixel electrode arranged in a matrix shape on the side of the display medium layer and the opposed substrate includes a common electrode opposing to the pixel electrode on the side of the display medium layer, wherein the substrate for a display device includes an electrode slit formed in one of the pixel electrode and the common electrode, and at least one of the electrical connecting portions of the electrode slit is provided outside of a light-blocking region.Type: ApplicationFiled: May 29, 2009Publication date: October 1, 2009Applicant: SHARP KABUSHIKI KAISHAInventors: Hidetoshi NAKAGAWA, Toshihide TSUBATA, Nobuyoshi NAGASHIMA, Yuhko HISADA
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Patent number: 7595781Abstract: In an active-matrix liquid crystal display device, each of multiple pixels includes a first sub-pixel and a second sub-pixel, through which different voltages are applicable to a portion of the liquid crystal layer. Each of the first and second sub-pixels includes a liquid crystal capacitor defined by a counter electrode and a sub-pixel electrode that faces the counter electrode by way of the liquid crystal layer, and a storage capacitor defined by a storage capacitor electrode, an insulating layer, and a storage capacitor counter electrode. The storage capacitor electrode is electrically connected to the sub-pixel electrode, and the storage capacitor counter electrode faces the storage capacitor electrode by way of the insulating layer. The counter electrode is shared by the first and second sub-pixels and the storage capacitor counter electrodes of the first and second sub-pixels are electrically independent of each other.Type: GrantFiled: December 21, 2005Date of Patent: September 29, 2009Assignee: Sharp Kabushiki KaishaInventors: Masanori Takeuchi, Nobuyoshi Nagashima, Naofumi Kondo
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Publication number: 20090079713Abstract: It is possible to implement impulse display in a hold type display device while suppressing an increase in complexity of a drive circuit and an increase in operation frequency. In an active matrix type liquid crystal display device of a dot-inversion drive scheme which is configured such that adjacent source lines are short-circuited during a predetermined period Tsh every horizontal scanning period, a gate driver applies a pulse for turning on a TFT in a pixel forming section, as a scanning signal G(j) (j=1 to m) to be provided to each scanning signal line as follows. In each, frame period, a pixel data write pulse Pw is sequentially applied to gate lines GL1 to GLm and a black voltage application pulse Pb is applied during the above-described predetermined period Tsh which is after the lapse of a period (Thd) of the order of a ? frame from the application of the pixel data write pulse Pw to each gate line GLj. The present invention is suitable for use in an active matrix type liquid crystal display device.Type: ApplicationFiled: July 4, 2006Publication date: March 26, 2009Inventor: Nobuyoshi Nagashima
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Patent number: 7505106Abstract: The present invention is a substrate for a display device comprising an active matrix substrate and an opposed substrate which are opposed to each other with a display medium layer interposed therebetween, said active matrix substrate including a pixel electrode arranged in a matrix shape on the side of the display medium layer and said opposed substrate including a common electrode opposing to the pixel electrode on the side of the display medium layer, wherein said substrate for a display device includes an electrode slit formed in one of the pixel electrode and the common electrode; and at least one of the electrical connecting portions of said electrode slit is provided outside of a light-blocking region.Type: GrantFiled: December 10, 2007Date of Patent: March 17, 2009Assignee: Sharp Kabushiki KaishaInventors: Hidetoshi Nakagawa, Toshihide Tsubata, Nobuyoshi Nagashima, Yuhko Hisada
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Patent number: 7499140Abstract: The present invention is a substrate for a display device comprising an active matrix substrate and an opposed substrate which are opposed to each other with a display medium layer interposed therebetween, said active matrix substrate including a pixel electrode arranged in a matrix shape on the side of the display medium layer and said opposed substrate including a common electrode opposing to the pixel electrode on the side of the display medium layer, wherein said substrate for a display device includes an electrode slit formed in one of the pixel electrode and the common electrode; and at least one of the electrical connecting portions of said electrode slit is provided outside of a light-blocking region.Type: GrantFiled: December 10, 2007Date of Patent: March 3, 2009Assignee: Sharp Kabushiki KaishaInventors: Hidetoshi Nakagawa, Toshihide Tsubata, Nobuyoshi Nagashima, Yuhko Hisada
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Publication number: 20090021658Abstract: In an active-matrix liquid crystal display device, each of multiple pixels includes a first sub-pixel and a second sub-pixel, through which different voltages are applicable to a portion of the liquid crystal layer. Each of the first and second sub-pixels includes a liquid crystal capacitor defined by a counter electrode and a sub-pixel electrode that faces the counter electrode by way of the liquid crystal layer, and a storage capacitor defined by a storage capacitor electrode, an insulating layer, and a storage capacitor counter electrode. The storage capacitor electrode is electrically connected to the sub-pixel electrode, and the storage capacitor counter electrode faces the storage capacitor electrode by way of the insulating layer. The counter electrode is shared by the first and second sub-pixels and the storage capacitor counter electrodes of the first and second sub-pixels are electrically independent of each other.Type: ApplicationFiled: September 25, 2008Publication date: January 22, 2009Applicant: SHARP KABUSHIKI KAISHAInventors: Masanori TAKEUCHI, Nobuyoshi NAGASHIMA, Naofumi KONDO