Patents by Inventor Yuichi Momoi
Yuichi Momoi 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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Publication number: 20230367157Abstract: A dimming device includes a pair of transparent substrates and a liquid crystal layer sandwiched between the pair of transparent substrates. The liquid crystal layer includes a vertical alignment agent, and the dimming device has a drive voltage of 25 V or less for providing a haze of 80% or more.Type: ApplicationFiled: September 8, 2021Publication date: November 16, 2023Inventors: Yuichi Momoi, Takahiro Ishinabe, Hideo Fujikake, Yosei Shibata
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Patent number: 8724073Abstract: A method for manufacturing a liquid crystal display (LCD) device includes preparing first and second substrates, at least one of the first and second substrates being a transparent substrate; forming a plurality of the column spacers on the first substrate for maintaining a cell gap between the first and second substrates and a sidewall on the first substrate for sealing the periphery of the substrates; applying an adhesive solution including an adhesive diluted with an organic solvent onto the first substrate having the column spacers and the sidewall thereon; positioning the second substrate on the first substrate so that the first and second substrates face each other; adhering the column spacers to the second substrate by drying the organic solvent from the adhesive solution; and providing a liquid crystal material between the first and second substrates.Type: GrantFiled: July 15, 2013Date of Patent: May 13, 2014Assignee: LG Display Co., Ltd.Inventors: Joung Won Woo, Yuichi Momoi, Dong Cheon Shin
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Publication number: 20130299067Abstract: A method for manufacturing a liquid crystal display (LCD) device includes preparing first and second substrates, at least one of the first and second substrates being a transparent substrate; forming a plurality of the column spacers on the first substrate for maintaining a cell gap between the first and second substrates and a sidewall on the first substrate for sealing the periphery of the substrates; applying an adhesive solution including an adhesive diluted with an organic solvent onto the first substrate having the column spacers and the sidewall thereon; positioning the second substrate on the first substrate so that the first and second substrates face each other; adhering the column spacers to the second substrate by drying the organic solvent from the adhesive solution; and providing a liquid crystal material between the first and second substrates.Type: ApplicationFiled: July 15, 2013Publication date: November 14, 2013Inventors: Joung Won WOO, Yuichi MOMOI, Dong Cheon SHIN
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Patent number: 8514355Abstract: A method for manufacturing a liquid crystal display (LCD) device includes preparing first and second substrates, at least one of the first and second substrates being a transparent substrate; forming a plurality of the column spacers on the first substrate for maintaining a cell gap between the first and second substrates and a sidewall on the first substrate for sealing the periphery of the substrates; applying an adhesive solution including an adhesive diluted with an organic solvent onto the first substrate having the column spacers and the sidewall thereon; positioning the second substrate on the first substrate so that the first and second substrates face each other; adhering the column spacers to the second substrate by drying the organic solvent from the adhesive solution; and providing a liquid crystal material between the first and second substrates.Type: GrantFiled: June 2, 2006Date of Patent: August 20, 2013Assignee: LG Display Co., Ltd.Inventors: Joung Won Woo, Yuichi Momoi, Dong Cheon Shin
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Patent number: 8144298Abstract: A liquid crystal display device and method of fabricating the device where the device can control a viewing angle in all directions without forming a white pixel. The liquid crystal display device includes a display control region that is controlled such that liquid crystal molecules are inclined and a viewing-angle control region that is controlled such that liquid crystal molecules are aligned in a horizontal or vertical direction, where a control voltage is supplied through a viewing angle control line independent of a common line for the display control region.Type: GrantFiled: March 23, 2011Date of Patent: March 27, 2012Assignee: LG Display Co., Ltd.Inventors: Nagayama Kazuyoshi, Yuichi Momoi
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Patent number: 7932981Abstract: A liquid crystal display device and method of fabricating the device where the device can control a viewing angle in all directions without forming a white pixel. The liquid crystal display device includes a display control region that is controlled such that liquid crystal molecules are inclined and a viewing-angle control region that is controlled such that liquid crystal molecules are aligned in a horizontal or vertical direction, where a control voltage is supplied through a viewing angle control line independent of a common line for the display control region.Type: GrantFiled: January 7, 2010Date of Patent: April 26, 2011Assignee: LG Display Co., Ltd.Inventors: Nagayama Kazuyoshi, Yuichi Momoi
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Patent number: 7714957Abstract: A liquid crystal display device, in which a viewing angle is controlled, and a viewing angle controlling method are provided. A liquid crystal display device includes at least one pixel including at least one color sub-pixel and at least one white sub-pixel, wherein liquid crystal molecules in the white sub-pixel are aligned to be driven in a different direction than liquid crystal molecules in the color sub-pixel.Type: GrantFiled: December 21, 2006Date of Patent: May 11, 2010Assignee: LG Display Co., Ltd.Inventors: Yuichi Momoi, Kazuyoshi Nagayama, Hidefumi Yoshida
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Patent number: 7656488Abstract: An LCD device includes liquid crystal molecules of n-type liquid crystal, and a viewing-angle control pixel controlling n-type liquid crystal in a pixel. The liquid crystal molecules are inclined in vertical and horizontal directions. The liquid crystal display device may control a viewing angle in vertical and horizontal directions without forming a white sub-pixel.Type: GrantFiled: December 27, 2006Date of Patent: February 2, 2010Assignee: LG. Display Co., Ltd.Inventors: Nagayama Kazuyoshi, Yuichi Momoi
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Patent number: 7522242Abstract: An LCD device includes: an LCD panel having at least one pixel that includes a first colored sub pixel and a white second sub pixel; and a liquid crystal alignment control means to control contrast in the LCD panel, wherein liquid crystal molecules of the second white sub pixel are aligned between 0° and 6° with respect to an absorption axis of at least one polarizing sheet by the liquid crystal alignment control means.Type: GrantFiled: August 21, 2006Date of Patent: April 21, 2009Assignee: LG Display Co., Ltd.Inventor: Yuichi Momoi
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Publication number: 20070165173Abstract: An LCD device includes liquid crystal molecules of n-type liquid crystal, and a viewing-angle control pixel controlling n-type liquid crystal in a pixel. The liquid crystal molecules are inclined in vertical and horizontal directions. The liquid crystal display device may control a viewing angle in vertical and horizontal directions without forming a white sub-pixel.Type: ApplicationFiled: December 27, 2006Publication date: July 19, 2007Inventors: Nagayama Kazuyoshi, Yuichi Momoi
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Publication number: 20070146610Abstract: A liquid crystal display device, in which a viewing angle is controlled, and a viewing angle controlling method are provided. A liquid crystal display device includes at least one pixel including at least one color sub-pixel and at least one white sub-pixel, wherein liquid crystal molecules in the white sub-pixel are aligned to be driven in a different direction than liquid crystal molecules in the color sub-pixel.Type: ApplicationFiled: December 21, 2006Publication date: June 28, 2007Applicant: LG.PHILIPS LCD CO., LTD.Inventors: Yuichi Momoi, Kazuyoshi Nagayama, Hidefumi Yoshida
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Patent number: 7211303Abstract: An alignment film for avoiding the degradation of the charge holding rate of a LCD, due to ionic impurity of the liquid crystal materials, and the LCD that is made of the same is disclosed herein. The alignment film 10 includes derivatives of polyimides or polyamides and low molecular thermosetting resins having a viscosity of 1–3000 Poise within the temperature of 25° C. Through the use of the alignment film 10 produced by the thermosetting resin monomers, the ionic impurity is prevented from contact with the pixel electrode 16. The performance of the LCD with the alignment film is improved during the test of reliability, even though a liquid crystal material with high dielectric anisotropy is used.Type: GrantFiled: December 22, 2004Date of Patent: May 1, 2007Assignee: Chi Mei Optoelectronics Inc.Inventor: Yuichi Momoi
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Publication number: 20070040975Abstract: An LCD device includes: an LCD panel having at least one pixel that includes a first colored sub pixel and a white second sub pixel; and a liquid crystal alignment control means to control contrast in the LCD panel, wherein liquid crystal molecules of the second white sub pixel are aligned between 0° and 6° with respect to an absorption axis of at least one polarizing sheet by the liquid crystal alignment control means.Type: ApplicationFiled: August 21, 2006Publication date: February 22, 2007Applicant: LG.PHILLIPS LCD CO., LTD.Inventor: Yuichi Momoi
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Publication number: 20060285061Abstract: A method for manufacturing a liquid crystal display (LCD) device includes preparing first and second substrates, at least one of the first and second substrates being a transparent substrate; forming a plurality of the column spacers on the first substrate for maintaining a cell gap between the first and second substrates and a sidewall on the first substrate for sealing the periphery of the substrates; applying an adhesive solution including an adhesive diluted with an organic solvent onto the first substrate having the column spacers and the sidewall thereon; positioning the second substrate on the first substrate so that the first and second substrates face each other; adhering the column spacers to the second substrate by drying the organic solvent from the adhesive solution; and providing a liquid crystal material between the first and second substrates.Type: ApplicationFiled: June 2, 2006Publication date: December 21, 2006Inventors: Joung Woo, Yuichi Momoi, Dong Shin
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Publication number: 20060134348Abstract: An alignment film for avoiding the degradation of the charge holding rate of a LCD, due to ionic impurity of the liquid crystal materials, and the LCD that is made of the same is disclosed herein. The alignment film 10 includes derivatives of polyimides or polyamides and low molecular thermosetting resins having a viscosity of 1-3000 Poise within the temperature of 25° C. Through the use of the alignment film 10 produced by the thermosetting resin monomers, the ionic impurity is prevented from contact with the pixel electrode 16. The performance of the LCD with the alignment film is improved during the test of reliability, even though a liquid crystal material with high dielectric anisotropy is used.Type: ApplicationFiled: December 22, 2004Publication date: June 22, 2006Inventor: Yuichi Momoi
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Patent number: 7005164Abstract: A conduction inhibitor including an epoxy resin or the like is mixed into a liquid crystal material. Specifically, the conduction inhibitor is formed by a bisphenol F epoxy resin, and mixing proportion is set to 0.1 wt % to 10 wt %. When such a conduction inhibitor is mixed, electrical conduction caused by ions due to an impurity or the like existing in the liquid crystal material can be suppressed, thereby maintaining a voltage holding ratio high when a liquid crystal display cell and a liquid crystal display are structured by using the liquid crystal material.Type: GrantFiled: June 16, 2003Date of Patent: February 28, 2006Assignees: International Display Technology Co., Ltd., International Business Machines CorporationInventors: Yuichi Momoi, Junta Yamamichi
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Patent number: 6734944Abstract: In the liquid crystal display 10, consisting of a first substrate (12) and a second substrate (14) facing each other, either or both of the first substrate (12) and the second substrate (14) is/are disposed in a non-display region, the spacers 18 consisting of a photosensitive resin regulating the cell gaps 16 between both substrates 12 and 14, and liquid crystal 20 sandwiched between the first substrate (12) and the second substrate (14), either a dynamic hardness value or a plastic deformation hardness value is within a fixed range.Type: GrantFiled: April 26, 2000Date of Patent: May 11, 2004Assignee: International Business Machines CorporationInventors: Toshihiko Koseki, Hidefumi Yamashita, Taro Hasumi, Yuichi Momoi, Yoshinori Shohmitsu, Tomohito Johnai
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Publication number: 20040033320Abstract: A conduction inhibitor including an epoxy resin or the like is mixed into a liquid crystal material. Specifically, the conduction inhibitor is formed by a bisphenol F epoxy resin, and mixing proportion is set to 0.1 wt % to 10 wt %. When such a conduction inhibitor is mixed, electrical conduction caused by ions due to an impurity or the like existing in the liquid crystal material can be suppressed, thereby maintaining a voltage holding ratio high when a liquid crystal display cell and a liquid crystal display are structured by using the liquid crystal material.Type: ApplicationFiled: June 16, 2003Publication date: February 19, 2004Applicants: INTERNATIONAL DISPLAY TECHNOLOGY CO., LTD, INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Yuichi Momoi, Junta Yamamichi