Patents by Inventor Yoshiki Nakatani
Yoshiki Nakatani 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: 10216034Abstract: A liquid crystal display device (100) includes a first liquid crystal display panel (1) configured to be capable of taking a transparent displaying state and a second liquid crystal display panel (2), such that the first liquid crystal display panel allows at least a portion of light going out of the second liquid crystal display panel to be transmitted in the transparent displaying state.Type: GrantFiled: June 12, 2015Date of Patent: February 26, 2019Assignee: SHARP KABUSHIKI KAISHAInventors: Yuichi Kita, Yoshiki Nakatani, Takahiro Sasaki, Iori Aoyama, Kazutaka Hanaoka
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Patent number: 10209582Abstract: A liquid crystal display device (100) includes a liquid crystal display panel (1) including a first substrate (10), a second substrate (20), and a liquid crystal layer (30). The first substrate includes a first electrode (11) provided for each pixel, and a second electrode (12) for generating a lateral field across the liquid crystal layer in cooperation with the first electrode. The second substrate includes a third electrode (21) for generating a vertical field across the liquid crystal layer in cooperation with the first electrode and the second electrode. Each pixel is capable of switchably presenting a black displaying state where a vertical field is generated across the liquid crystal layer, a white displaying state where a lateral field is generated across the liquid crystal layer, and a transparent displaying state where a rear face side of the liquid crystal display panel is visible in a see-through manner with no voltage being applied to the liquid crystal layer.Type: GrantFiled: May 29, 2015Date of Patent: February 19, 2019Assignee: SHARP KABUSHIKI KAISHAInventors: Iori Aoyama, Yuichi Kita, Takahiro Sasaki, Yoshiki Nakatani, Kazutaka Hanaoka
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Patent number: 10192493Abstract: A display device (100) includes: a display panel (1) capable of being in a transparent display state where a background scene is viewable through the display panel; a panel light source (3) that irradiates the display panel with colored light of a plurality of colors in a time division manner; a rear side light source (2) placed on a rear surface side of the display panel, the rear side light source being capable of emitting colored light of a plurality of colors in a time division manner; and a control circuit that controls emission timings of the colored light from the panel light source and from the rear side light source, wherein the panel light source and the rear side light source are synchronized by the control circuit such that colored light of different colors are not emitted at a same timing.Type: GrantFiled: June 9, 2015Date of Patent: January 29, 2019Assignee: SHARP KABUSHIKI KAISHAInventors: Yuichi Kita, Yoshiki Nakatani, Iori Aoyama, Takahiro Sasaki
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Patent number: 10186525Abstract: The present invention provides a circuit board having excellent productivity, particularly a circuit board having excellent productivity with respect to a semiconductor layer and source layer forming step, a display device, and a process for producing a circuit board. The circuit board of the present invention is a circuit board including an oxide semiconductor layer and an electrode connected to the oxide semiconductor layer, wherein the electrode is formed by essentially laminating a layer made of a metal other than copper and a layer containing copper.Type: GrantFiled: February 2, 2017Date of Patent: January 22, 2019Assignee: SHARP KABUSHIKI KAISHAInventors: Yuichi Saito, Yohsuke Kanzaki, Yudai Takanishi, Tetsuya Okamoto, Yoshiki Nakatani, Yoshimasa Chikama
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Publication number: 20170194359Abstract: The present invention provides a circuit board having excellent productivity, particularly a circuit board having excellent productivity with respect to a semiconductor layer and source layer forming step, a display device, and a process for producing a circuit board. The circuit board of the present invention is a circuit board including an oxide semiconductor layer and an electrode connected to the oxide semiconductor layer, wherein the electrode is formed by essentially laminating a layer made of a metal other than copper and a layer containing copper.Type: ApplicationFiled: February 2, 2017Publication date: July 6, 2017Inventors: Yuichi SAITO, Yohsuke KANZAKI, Yudai TAKANISHI, Tetsuya OKAMOTO, Yoshiki NAKATANI, Yoshimasa CHIKAMA
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Publication number: 20170115527Abstract: A liquid crystal display device (100) includes a first liquid crystal display panel (1) configured to be capable of taking a transparent displaying state and a second liquid crystal display panel (2), such that the first liquid crystal display panel allows at least a portion of light going out of the second liquid crystal display panel to be transmitted in the transparent displaying state.Type: ApplicationFiled: June 12, 2015Publication date: April 27, 2017Inventors: Yuichi KITA, Yoshiki NAKATANI, Takahiro SASAKI, Iori AOYAMA, Kazutaka HANAOKA
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Publication number: 20170103716Abstract: A display device (100) includes: a display panel (1) capable of being in a transparent display state where a background scene is viewable through the display panel; a panel light source (3) that irradiates the display panel with colored light of a plurality of colors in a time division manner; a rear side light source (2) placed on a rear surface side of the display panel, the rear side light source being capable of emitting colored light of a plurality of colors in a time division manner; and a control circuit that controls emission timings of the colored light from the panel light source and from the rear side light source, wherein the panel light source and the rear side light source are synchronized by the control circuit such that colored light of different colors are not emitted at a same timing.Type: ApplicationFiled: June 9, 2015Publication date: April 13, 2017Inventors: Yuichi KITA, Yoshiki NAKATANI, Iori AOYAMA, Takahiro SASAKI
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Publication number: 20170097548Abstract: A liquid crystal display device (100) includes a liquid crystal display panel (1) including a first substrate (10), a second substrate (20), and a liquid crystal layer (30). The first substrate includes a first electrode (11) provided for each pixel, and a second electrode (12) for generating a lateral field across the liquid crystal layer in cooperation with the first electrode. The second substrate includes a third electrode (21) for generating a vertical field across the liquid crystal layer in cooperation with the first electrode and the second electrode. Each pixel is capable of switchably presenting a black displaying state where a vertical field is generated across the liquid crystal layer, a white displaying state where a lateral field is generated across the liquid crystal layer, and a transparent displaying state where a rear face side of the liquid crystal display panel is visible in a see-through manner with no voltage being applied to the liquid crystal layer.Type: ApplicationFiled: May 29, 2015Publication date: April 6, 2017Inventors: Iori AOYAMA, Yuichi KITA, Takahiro SASAKI, Yoshiki NAKATANI, Kazutaka HANAOKA
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Patent number: 9508297Abstract: The present invention provides a liquid-crystal-driving method of driving liquid crystal by causing a potential difference between a pair of electrodes provided for one of upper and lower substrates, wherein a DC image sticking and a flicker are sufficiently reduced, and a liquid crystal display device driven by using the liquid-crystal-driving method. The present invention relates to a method of driving liquid crystal by causing a potential difference between a pair of electrodes provided for one of upper and lower substrates. In the liquid-crystal-driving method, a driving operation of driving liquid crystal by causing a potential between a pair of electrodes is executed. In the driving operation, the absolute value of a second offset voltage is larger than that of a first offset voltage.Type: GrantFiled: April 22, 2013Date of Patent: November 29, 2016Assignee: Sharp Kabushiki KaishaInventors: Takatomo Yoshioka, Yuichi Kita, Yoshiki Nakatani
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Publication number: 20160178979Abstract: A liquid crystal display device (100) has a liquid crystal display panel (1), which includes a first substrate (10), a second substrate (20), and a liquid crystal layer (30). The first substrate includes a first electrode (11) provided for each pixel, and a second electrode (12) for generating a lateral field across the liquid crystal layer in cooperation with the first electrode, whereas the second substrate includes a third electrode (21) for generating a vertical field across the liquid crystal layer in cooperation with the first electrode and the second electrode.Type: ApplicationFiled: February 21, 2014Publication date: June 23, 2016Applicant: SHARP KABUSHIKI KAISHAInventors: Yuichi KITA, Yoshiki NAKATANI, Takao IMAOKU, Iori AOYAMA, Takatomo YOSHIOKA
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Publication number: 20150339968Abstract: The present invention provides a field sequential liquid crystal display device which can provide display with an appropriate gray scale value in a period when the period succeeds a period in which the light source in the backlight unit is turned off.Type: ApplicationFiled: December 10, 2013Publication date: November 26, 2015Applicant: Sharp Kabushiki KaishaInventors: Takatomo YOSHIOKA, Yuichi KITA, Yoshiki NAKATANI, Takao IMAOKU, Iori AOYAMA
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Patent number: 9196742Abstract: A TFT substrate (20a) includes a plurality of pixel electrodes (17a) provided in a matrix, a plurality of TFTs (5) each provided for a corresponding one of the pixel electrodes (17a), and a plurality of auxiliary capacitors (6a) each provided for a corresponding one of the pixel electrodes (17a). Each of the auxiliary capacitors (6a) includes a capacitor line (11b) made of a material identical to that of the gate electrode (11aa) of the TFT (5) and provided in a layer identical to that of the gate electrode (11aa) of the TFT (5), the gate insulating film (12) provided so as to cover the capacitor line (11b), and a corresponding one of the pixel electrodes (17a) provided on the gate insulating film (12) so as to overlap with the capacitor line (11b) and being in conduction with a drain electrode (14ca).Type: GrantFiled: July 28, 2011Date of Patent: November 24, 2015Assignee: Sharp Kabushiki KaishaInventors: Yohsuke Kanzaki, Yuhichi Saitoh, Yoshiki Nakatani, Tetsuya Okamoto, Yudai Takanishi
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Publication number: 20150293413Abstract: The present invention provides a thin-film transistor array substrate capable of sufficiently preventing a decrease in the aperture ratio and insufficient charging of thin-film transistor elements due to shortening of signal writing time for pixels while achieving high speed driving; and a liquid crystal display device including the thin-film transistor array substrate.Type: ApplicationFiled: November 26, 2013Publication date: October 15, 2015Applicant: Sharp Kabushiki KaishaInventors: Iori AOYAMA, Yuichi KITA, Takatomo YOSHIOKA, Takao IMAOKU, Yoshiki NAKATANI
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Publication number: 20150146125Abstract: The present invention provides a liquid crystal display panel and a liquid crystal display device each having sufficiently excellent transmittance, and a thin film transistor array substrate for use in the liquid crystal display panel and the liquid crystal display device. The present invention provides a liquid crystal display panel including a first substrate, a second substrate, and a liquid crystal layer interposed between the first and second substrates, wherein the first substrate includes an electrode having a T-shaped branched section, and the electrode includes linear portions forming the T-shaped branched section and separately extending in directions different from a pixel array direction.Type: ApplicationFiled: April 17, 2013Publication date: May 28, 2015Inventors: Yuichi Kita, Takatomo Yoshioka, Yoshiki Nakatani, Kazuhiko Tsuda
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Publication number: 20150131019Abstract: The present invention provides a liquid crystal driving method of sufficiently reducing DC image sticking together with flicker and a liquid crystal display device driven by using the liquid crystal driving method. The invention relates to a liquid crystal driving method of driving liquid crystal by causing a potential difference between a pair of electrodes provided for one of upper and lower substrates. Polarity of each of application voltages to the pair of electrodes is inverted, and a planar electrode is provided for the upper substrate and/or the lower substrate.Type: ApplicationFiled: April 22, 2013Publication date: May 14, 2015Inventors: Yuichi Kita, Takatomo Yoshioka, Yoshiki Nakatani
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Publication number: 20150109274Abstract: The present invention provides a liquid-crystal-driving method of driving liquid crystal by causing a potential difference between a pair of electrodes provided for one of upper and lower substrates, wherein a DC image sticking and a flicker are sufficiently reduced, and a liquid crystal display device driven by using the liquid-crystal-driving method. The present invention relates to a method of driving liquid crystal by causing a potential difference between a pair of electrodes provided for one of upper and lower substrates. In the liquid-crystal-driving method, a driving operation of driving liquid crystal by causing a potential between a pair of electrodes is executed. In the driving operation, the absolute value of a second offset voltage is larger than that of a first offset voltage.Type: ApplicationFiled: April 22, 2013Publication date: April 23, 2015Inventors: Takatomo Yoshioka, Yuichi Kita, Yoshiki Nakatani
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Patent number: 8779478Abstract: A TFT 20 includes a gate electrode 21, a gate insulating film 22, a semiconductor layer 23, a source electrode 24, a drain electrode 25, etc. The semiconductor layer 23 is comprised of a metal oxide semiconductor (IGZO), and has a source portion 23a that contacts the source electrode 24, a drain electrode 23b that contacts the drain electrode 25, and a channel portion 23c that is located between the source and drain portions 23a, 23b. A reduced region 30 is formed at least in the channel portion 23c of the semiconductor layer 23, and the reduced region 30 has a higher content of a simple substance of a metal such as In than the remaining portion of the semiconductor layer 23.Type: GrantFiled: May 23, 2011Date of Patent: July 15, 2014Assignee: Sharp Kabushiki KaishaInventors: Masao Moriguchi, Michiko Takei, Yohsuke Kanzaki, Tsuyoshi Inoue, Tetsuo Fukaya, Yudai Takanishi, Takatsugu Kusumi, Yoshiki Nakatani, Tetsuya Okamoto, Kenji Nakanishi
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Publication number: 20140151682Abstract: The present invention provides a circuit board having excellent productivity, particularly a circuit board having excellent productivity with respect to a semiconductor layer and source layer forming step, a display device, and a process for producing a circuit board. The circuit board of the present invention is a circuit board including an oxide semiconductor layer and an electrode connected to the oxide semiconductor layer, wherein the electrode is formed by essentially laminating a layer made of a metal other than copper and a layer containing copper.Type: ApplicationFiled: April 13, 2011Publication date: June 5, 2014Applicant: Sharp Kabushiki KaishaInventors: Yuichi Saito, Yohsuke Kanzaki, Yudai Takanishi, Tetsuya Okamoto, Yoshiki Nakatani, Yoshimasa Chikama
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Patent number: 8653531Abstract: Disclosed is a thin film transistor wherein an ON current is increased and a leak current is reduced. The channel layer 60 of the TFT 10 is formed of a crystalline silicon, and the lower surface of one end of the channel layer 60 is electrically connected to the surface of an n+ silicon layer 40a, and the lower surface of the other end is electrically connected to the surface of an n+ silicon layer 40b. Furthermore, the side surface of said end of the channel layer 60 is electrically connected to a source electrode 50a, and the side surface of the other end is electrically connected to a drain electrode 50b. Thus, a barrier that makes electrons, which act as carriers, not easily transferred is formed on the boundary between the source electrode 50a and the channel layer 60. As a result, the ON current that flows when the TFT 10 is in the ON state can be increased, and the leak current that flows when the TFT is in the OFF state can be reduced.Type: GrantFiled: July 8, 2010Date of Patent: February 18, 2014Assignee: Sharp Kabushiki KaishaInventors: Yohsuke Kanzaki, Yudai Takanishi, Yoshiki Nakatani
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Publication number: 20140028944Abstract: A TFT substrate (20a) includes a plurality of pixel electrodes (17a) provided in a matrix, a plurality of TFTs (5) each provided for a corresponding one of the pixel electrodes (17a), and a plurality of auxiliary capacitors (6a) each provided for a corresponding one of the pixel electrodes (17a). Each of the auxiliary capacitors (6a) includes a capacitor line (11b) made of a material identical to that of the gate electrode (11aa) of the TFT (5) and provided in a layer identical to that of the gate electrode (11aa) of the TFT (5), the gate insulating film (12) provided so as to cover the capacitor line (11b), and a corresponding one of the pixel electrodes (17a) provided on the gate insulating film (12) so as to overlap with the capacitor line (11b) and being in conduction with a drain electrode (14ca).Type: ApplicationFiled: July 28, 2011Publication date: January 30, 2014Applicant: SHARP KABUSHIKI KAISHAInventors: Yohsuke Kanzaki, Yuhichi Saitoh, Yoshiki Nakatani, Tetsuya Okamoto, Yudai Takanishi