Patents by Inventor Fumikazu Shimoshikiryo
Fumikazu Shimoshikiryo 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: 8698850Abstract: In at least one embodiment, a display device includes: a correction section for carrying out gray scale correction on gray scale data to be supplied to a display driver, by use of a correction amount corresponding to a position of each column to which the data signal is to be supplied, the each column being on a display panel, the correction section carrying out the gray scale correction by setting the correction amount to zero for at least (i) gray scale data corresponding to a lowest positive-polarity data signal potential and (ii) gray scale data corresponding to a lowest negative-polarity data signal potential of first gray scale data to be supplied to at least one column constituting a part of all columns, the gray scale data (i) and (ii) being among the gray scale data inputted into the correction section.Type: GrantFiled: August 25, 2009Date of Patent: April 15, 2014Assignee: Sharp Kabushiki KaishaInventors: Kentaro Irie, Masae Kawabata, Hiroto Suzuki, Fumikazu Shimoshikiryo
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Publication number: 20110221760Abstract: In at least one embodiment, a display device includes: a correction section for carrying out gray scale correction on gray scale data to be supplied to a display driver, by use of a correction amount corresponding to a position of each column to which the data signal is to be supplied, the each column being on a display panel, the correction section carrying out the gray scale correction by setting the correction amount to zero for at least (i) gray scale data corresponding to a lowest positive-polarity data signal potential and (ii) gray scale data corresponding to a lowest negative-polarity data signal potential of first gray scale data to be supplied to at least one column constituting a part of all columns, the gray scale data (i) and (ii) being among the gray scale data inputted into the correction section.Type: ApplicationFiled: August 25, 2009Publication date: September 15, 2011Applicant: Sharp Kabushiki KaishaInventors: Kentaro Irie, Masae Kawabata, Hiroto Suzuki, Fumikazu Shimoshikiryo
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Patent number: 7450207Abstract: A first electrode 14 provided in a liquid crystal display device of a vertical alignment mode includes, for each picture element region, a lower conductive layer 11, a dielectric layer 12 covering the lower conductive layer 11, and an upper conductive layer 13 provided on one side of the dielectric layer 12 which is closer to a liquid crystal layer 30. The upper conductive layer 13 includes an upper layer opening 13a, and the lower conductive layer 11 includes a lower layer opening 11a, thus forming first, second and third regions (R1, R2, R3) having gradually decreasing electric field strengths. Liquid crystal molecules 30a of the liquid crystal layer 30 in an orientation-regulating region T1 in which the first, second and third regions are arranged in this order in a predetermined direction change the orientation direction thereof so that they are inclined in a single direction in the presence of an applied voltage.Type: GrantFiled: September 16, 2004Date of Patent: November 11, 2008Assignee: Sharp Kabushiki KaishaInventor: Fumikazu Shimoshikiryo
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Patent number: 7283192Abstract: To reduce viewing angle dependence of ? characteristics in a normally black liquid crystal display. Each pixel 10 has a first sub-pixel 10a and a second sub-pixel 10b which can apply mutually different voltages to their respective liquid crystal layers. Relationships ?V12 (gk)>0 volts and ?V12 (gk)??V12 (gk+1) are satisfied at least in a range 0<gk?n?1 if it is assumed that ?V12=V1?V2, where ?V12 is the difference between root-mean-square voltage V1 applied to the liquid crystal layer of the first sub-pixel 10a and root-mean-square voltage V2 applied to the liquid crystal layer of the second sub-pixel 10b.Type: GrantFiled: April 20, 2006Date of Patent: October 16, 2007Assignee: Sharp Kabushiki KaishaInventor: Fumikazu Shimoshikiryo
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Publication number: 20060256271Abstract: To reduce viewing angle dependence of ? characteristics in a normally black liquid crystal display. Each pixel 10 has a first sub-pixel 10a and a second sub-pixel 10b which can apply mutually different voltages to their respective liquid crystal layers. Relationships ?V12 (gk)>0 volts and ?V12 (gk)>?V12 (gk+1) are satisfied at least in a range 0<gk?n?1 if it is assumed that ?V12=V1?V2, where ?V12 is the difference between root-mean-square voltage V1 applied to the liquid crystal layer of the first sub-pixel 10a and root-mean-square voltage V2 applied to the liquid crystal layer of the second sub-pixel 10b.Type: ApplicationFiled: April 20, 2006Publication date: November 16, 2006Inventor: Fumikazu Shimoshikiryo
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Patent number: 7079214Abstract: To reduce viewing angle dependence of ? characteristics in a normally black liquid crystal display. Each pixel 10 has a first sub-pixel 10a and a second sub-pixel 10b which can apply mutually different voltages to their respective liquid crystal layers. Relationships ?V12 (gk)>0 volts and ?V12 (gk)??V12 (gk+1) are satisfied at least in a range 0<gk?n?1 if it is assumed that ?V12=V1?V2, where ?V12 is the difference between root-mean-square voltage V1 applied to the liquid crystal layer of the first sub-pixel 10a and root-mean-square voltage V2 applied to the liquid crystal layer of the second sub-pixel 10b.Type: GrantFiled: May 17, 2005Date of Patent: July 18, 2006Assignee: Sharp Kabushiki KaishaInventor: Fumikazu Shimoshikiryo
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Patent number: 7057689Abstract: A liquid crystal display device of the present invention includes: a liquid crystal cell having a pair of substrates and a liquid crystal layer interposed therebetween; a pair of polarizing plates interposing the liquid crystal cell therebetween; and a phase compensation element provided between at least one of the polarizing plates and the liquid crystal cell. A refractive index anisotropy value of the liquid crystal layer along a plane parallel to a surface of the liquid crystal cell is smaller in a black display than in a white display.Type: GrantFiled: November 8, 2002Date of Patent: June 6, 2006Assignee: Sharp Kabushiki KaishaInventors: Shinichi Terashita, Fumikazu Shimoshikiryo, Shuichi Kozaki
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Patent number: 6958791Abstract: To reduce viewing angle dependence of ? characteristics in a normally black liquid crystal display. Each pixel 10 has a first sub-pixel 10a and a second sub-pixel 10b which can apply mutually different voltages to their respective liquid crystal layers. Relationships ?V12 (gk)>0 volts and ?V12 (gk)??V12 (gk+1) are satisfied at least in a range 0 <gk?n?1 if it is assumed that ?V12=V1?V2, where ?V12 is the difference between root-mean-square voltage V1 applied to the liquid crystal layer of the first sub-pixel 10a and root-mean-square voltage V2 applied to the liquid crystal layer of the second sub-pixel 10b.Type: GrantFiled: June 6, 2003Date of Patent: October 25, 2005Assignee: Sharp Kabushiki KaishaInventor: Fumikazu Shimoshikiryo
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Publication number: 20050213015Abstract: To reduce viewing angle dependence of ? characteristics in a normally black liquid crystal display. Each pixel 10 has a first sub-pixel 10a and a second sub-pixel 10b which can apply mutually different voltages to their respective liquid crystal layers. Relationships ?V12 (gk)>0 volts and ?V12 (gk)??V12 (gk+1) are satisfied at least in a range 0<gk?n?1 if it is assumed that ?V12=V1?V2, where ?V12 is the difference between root-mean-square voltage V1 applied to the liquid crystal layer of the first sub-pixel 10a and root-mean-square voltage V2 applied to the liquid crystal layer of the second sub-pixel 10b.Type: ApplicationFiled: May 17, 2005Publication date: September 29, 2005Inventor: Fumikazu Shimoshikiryo
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Publication number: 20050041186Abstract: A first electrode 14 provided in a liquid crystal display device of a vertical alignment mode includes, for each picture element region, a lower conductive layer 11, a dielectric layer 12 covering the lower conductive layer 11, and an upper conductive layer 13 provided on one side of the dielectric layer 12 which is closer to a liquid crystal layer 30. The upper conductive layer 13 includes an upper layer opening 13a, and the lower conductive layer 11 includes a lower layer opening 11a, thus forming first, second and third regions (R1, R2, R3) having gradually decreasing electric field strengths. Liquid crystal molecules 30a of the liquid crystal layer 30 in an orientation-regulating region T1 in which the first, second and third regions are arranged in this order in a predetermined direction change the orientation direction thereof so that they are inclined in a single direction in the presence of an applied voltage.Type: ApplicationFiled: September 16, 2004Publication date: February 24, 2005Applicant: Sharp Kabushiki KaishaInventor: Fumikazu Shimoshikiryo
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Patent number: 6850301Abstract: A first electrode 14 provided in a liquid crystal display device of a vertical alignment mode includes, for each picture element region, a lower conductive layer 11, a dielectric layer 12 covering the lower conductive layer 11, and an upper conductive layer 13 provided on one side of the dielectric layer 12 which is closer to a liquid crystal layer 30. The upper conductive layer 13 includes an upper layer opening 13a, and the lower conductive layer 11 includes a lower layer opening 11a, thus forming first, second and third regions (R1, R2, R3) having gradually decreasing electric field strengths. Liquid crystal molecules 30a of the liquid crystal layer 30 in an orientation-regulating region T1 in which the first, second and third regions are arranged in this order in a predetermined direction change the orientation direction thereof so that they are inclined in a single direction in the presence of an applied voltage.Type: GrantFiled: February 15, 2001Date of Patent: February 1, 2005Assignee: Sharp Kabushiki KaishaInventor: Fumikazu Shimoshikiryo
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Patent number: 6731356Abstract: A liquid crystal display device of the present invention includes a pair of substrates and a liquid crystal layer provided between the substrates, wherein liquid crystal molecules in the liquid crystal layer have a negative dielectric anisotropy, and the liquid crystal molecules are aligned in a direction substantially vertical to the substrates when no voltage is being applied and are axis-symmetrically aligned in each of a plurality of pixel regions under application of a voltage.Type: GrantFiled: December 21, 2001Date of Patent: May 4, 2004Assignee: Sharp Kabushiki KaishaInventors: Nobuaki Yamada, Fumikazu Shimoshikiryo, Yasuhiro Kume, Shuichi Kozaki, Takako Adachi, Shinichi Terashita, Takashi Kurihara
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Patent number: 6663795Abstract: A liquid crystal display device of the present invention includes: a pair of substrates for which a homeotropic alignment treatment is performed; a liquid crystal layer provided between the substrates; and a transverse electric field generating electrode capable of being driven in a matrix driving manner which is provided on at least one of the pair of substrates and is connected to external control means. A liquid crystal material contained in the liquid crystal layer is a liquid crystal material which, as a whole liquid crystal layer, generates spontaneous polarization by a piezoelectric effect.Type: GrantFiled: October 23, 2002Date of Patent: December 16, 2003Assignee: Sharp Kabushiki KaishaInventors: Fumikazu Shimoshikiryo, Shuichi Kozaki, Koichi Miyachi
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Publication number: 20030227429Abstract: To reduce viewing angle dependence of &ggr; characteristics in a normally black liquid crystal display.Type: ApplicationFiled: June 6, 2003Publication date: December 11, 2003Inventor: Fumikazu Shimoshikiryo
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Publication number: 20030107701Abstract: A liquid crystal display device of the present invention includes: a pair of substrates for which a homeotropic alignment treatment is performed; a liquid crystal layer provided between the substrates; and a transverse electric field generating electrode capable of being driven in a matrix driving manner which is provided on at least one of the pair of substrates and is connected to external control means. A liquid crystal material contained in the liquid crystal layer is a liquid crystal material which, as a whole liquid crystal layer, generates spontaneous polarization by a piezoelectric effect.Type: ApplicationFiled: October 23, 2002Publication date: June 12, 2003Applicant: Sharp Kabushiki KaishaInventors: Fumikazu Shimoshikiryo, Shuichi Kozaki, Koichi Miyachi
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Publication number: 20030058393Abstract: A liquid crystal display device of the present invention includes: a liquid crystal cell having a pair of substrates and a liquid crystal layer interposed therebetween; a pair of polarizing plates interposing the liquid crystal cell therebetween; and a phase compensation element provided between at least one of the polarizing plates and the liquid crystal cell. A refractive index anisotropy value of the liquid crystal layer along a plane parallel to a surface of the liquid crystal cell is smaller in a black display than in a white display.Type: ApplicationFiled: November 8, 2002Publication date: March 27, 2003Applicant: Sharp Kabushiki KaishaInventors: Shinichi Terashita, Fumikazu Shimoshikiryo, Shuichi Kozaki
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Patent number: RE44470Abstract: A first electrode 14 provided in a liquid crystal display device of a vertical alignment mode includes, for each picture element region, a lower conductive layer 11, a dielectric layer 12 covering the lower conductive layer 11, and an upper conductive layer 13 provided on one side of the dielectric layer 12 which is closer to a liquid crystal layer 30. The upper conductive layer 13 includes an upper layer opening 13a, and the lower conductive layer 11 includes a lower layer opening 11a, thus forming first, second and third regions (R1, R2, R3) having gradually decreasing electric field strengths. Liquid crystal molecules 30a of the liquid crystal layer 30 in an orientation-regulating region T1 in which the first, second and third regions are arranged in this order in a predetermined direction change the orientation direction thereof so that they are inclined in a single direction in the presence of an applied voltage.Type: GrantFiled: November 11, 2010Date of Patent: September 3, 2013Assignee: Sharp Kabushiki KaishaInventor: Fumikazu Shimoshikiryo
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Patent number: RE45283Abstract: To reduce viewing angle dependence of ? characteristics in a normally black liquid crystal display. Each pixel 10 has a first sub-pixel 10a and a second sub-pixel 10b which can apply mutually different voltages to their respective liquid crystal layers. Relationships ?V12 (gk)>0 volts and ?V12 (gk)??V12 (gk+1) are satisfied at least in a range 0<gk?n?1 if it is assumed that ?V12=V1?V2, where ?V12 is the difference between root-mean-square voltage V1 applied to the liquid crystal layer of the first sub-pixel 10a and root-mean-square voltage V2 applied to the liquid crystal layer of the second sub-pixel 10b.Type: GrantFiled: March 16, 2011Date of Patent: December 9, 2014Assignee: Sharp Kabushiki KaishaInventor: Fumikazu Shimoshikiryo
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Patent number: RE46025Abstract: To reduce viewing angle dependence of ? characteristics in a normally black liquid crystal display. Each pixel 10 has a first sub-pixel 10a and a second sub-pixel 10b which can apply mutually different voltages to their respective liquid crystal layers. Relationships ?V12 (gk)>0 volts and ?V12 (gk)??V12 (gk+1) are satisfied at least in a range 0<gk?n?1 if it is assumed that ?V12=V1?V2, where ?V12 is the difference between root-mean-square voltage V1 applied to the liquid crystal layer of the first sub-pixel 10a and root-mean-square voltage V2 applied to the liquid crystal layer of the second sub-pixel 10b.Type: GrantFiled: October 15, 2009Date of Patent: June 7, 2016Assignee: SHARP KABUSHIKI KAISHAInventor: Fumikazu Shimoshikiryo
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Patent number: RE47660Abstract: To reduce viewing angle dependence of ? characteristics in a normally black liquid crystal display. Each pixel 10 has a first sub-pixel 10a and a second sub-pixel 10b which can apply mutually different voltages to their respective liquid crystal layers. Relationships ?V12 (gk)>0 volts and ?V12 (gk)??V12 (gk+1) are satisfied at least in a range 0<gk?n?1 if it is assumed that ?V12=V1?V2, where ?V12 is the difference between root-mean-square voltage V1 applied to the liquid crystal layer of the first sub-pixel 10a and root-mean-square voltage V2 applied to the liquid crystal layer of the second sub-pixel 10b.Type: GrantFiled: January 20, 2016Date of Patent: October 22, 2019Assignee: SHARP KABUSHIKI KAISHAInventor: Fumikazu Shimoshikiryo