Patents by Inventor Tokio Taguchi
Tokio Taguchi 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: 8289480Abstract: A liquid crystal display device comprises plural picture elements including a first picture element and a second picture element; plural switching elements; and plural scanning lines. The plural switching elements include a first switching element electrically connected to the first picture element and a second switching element electrically connected to the second picture element. The plural scanning lines include a first scanning line electrically connected to the first switching element and a second scanning line electrically connected to the second switching element. The second scanning line is located between at least part of the first picture element and the first scanning line. The first scanning line is located between at least part of the second picture element and the second scanning line.Type: GrantFiled: December 16, 2010Date of Patent: October 16, 2012Assignee: Sharp Kabushiki KaishaInventors: Tokio Taguchi, Kazuhiko Tsuda, Mutsumi Nakajima, Keisuke Yoshida, Junichi Yamada
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Publication number: 20120234794Abstract: A mold of an embodiment of the present invention has a surface that has a shape which is inverse of a surface shape of a moth-eye structure. This surface has a plurality of protrusions, a plurality of ridges extending between the plurality of protrusions via saddle portions, and a plurality of holes, each of which is defined by at least any three of the plurality of protrusions and ridges extending between the at least any three of the plurality of protrusions, and an average distance between centers of adjacent holes, p, and an average depth of the saddle portions, r, satisfy the relationship of 0.15?r/p?0.60.Type: ApplicationFiled: November 25, 2010Publication date: September 20, 2012Applicant: SHARP KABUSHIKI KAISHAInventors: Akinobu Isurugi, Kiyoshi Minoura, Tokio Taguchi, Takao Imaoku
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Patent number: 8262382Abstract: A stamper, used for fabricating an antireflective member, has an uneven surface pattern, which includes a plurality of very small recessed portions, each having a stepped side surface.Type: GrantFiled: March 26, 2009Date of Patent: September 11, 2012Assignee: Sharp Kabushiki KaishaInventors: Tokio Taguchi, Shun Ueki, Kozo Nakamura, Kazuhiko Tsuda
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Publication number: 20120200932Abstract: A mold includes an anodized porous alumina layer over its surface. The anodized porous alumina layer has a plurality of first and second recessed portions. The plurality of second recessed portions have a two-dimensional size of not less than 190 nm and not more than 50 ?m when viewed in a direction normal to the mold surface and have a plurality of minute recessed portions over its inner surface. The plurality of minute recessed portions have a two-dimensional size of not less than 10 nm and not more than 200 nm; and have a two-dimensional size of not less than 10 nm and not more than 200 nm. The plurality of first recessed portions are provided between the plurality of second recessed portions. The average value of the two-dimensional size of the plurality of second recessed portions is greater than that of the plurality of first recessed portions.Type: ApplicationFiled: October 12, 2010Publication date: August 9, 2012Applicant: SHARP KABUSHIKI KAISHAInventors: Chiaki Minari, Tokio Taguchi
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Publication number: 20120147303Abstract: A display device is provided in which reduction of reflected light is realized. Also a multilayer substrate is provided in which light reflectance is reduced even when the substrate has a plurality of layers that differ in refractive index from each other. In the display device of one embodiment, the reflectance of light reflected by the internal structure, of light incident on the internal structure through a display screen, is less than 1.0%. The multilayer substrate of one embodiment includes a first layer and a second layer disposed adjacently to the first layer. The refractive index of the second layer varies continuously from an interface where the second layer is adjacent to the first layer in a direction from the first layer, with the variation being started at a value of the refractive index at the interface where the first layer is adjacent to the second layer.Type: ApplicationFiled: May 26, 2010Publication date: June 14, 2012Applicant: Sharp Kabushiki KaishaInventors: Nobuaki Yamada, Kazuyoshi Sakuragi, Akiyoshi Fujii, Tokio Taguchi
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Publication number: 20120134023Abstract: Provided is a structure with an observation port. The structure with the observation port is provided with the observation port and an internal structure. The internal structure is located to the backside of the observation port and has a third reflection preventing film. The first reflection preventing film is a film that reduces reflected light by using light interference. Each of the second and third reflection preventing films has a surface comprising a plurality of convex portions, a distance between apexes of each adjacent two of which does not exceed the visible light wavelengths. Light obtained by combining light reflected by the surface of the first reflection preventing film, light reflected by the surface of the second reflection preventing film, and light reflected by the surface of the third reflection preventing film has a flat wavelength dispersion within the visible light range.Type: ApplicationFiled: April 30, 2010Publication date: May 31, 2012Applicant: SHARP KABUSHIKI KAISHAInventors: Takao Imaoku, Tokio Taguchi
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Publication number: 20120087012Abstract: Disclosed are: an optical film which has a moth eye structure; a method for producing the optical film; and a method for controlling the optical characteristics of the optical film. An embodiment discloses an optical film having a moth eye structure that includes a plurality of projections, wherein the plurality of projections include a plurality of slanted projections that are inclined to a film surface and the plurality of slanted projections are inclined in a generally same direction when the film surface is viewed in plan. Also disclosed is a method for producing an optical film having a moth eye structure, including applying a physical force to the moth eye structure. Further specifically disclosed is a method for controlling the optical characteristics of an optical film having a moth eye structure that includes a plurality of projections, the method including applying a physical force to the moth eye structure.Type: ApplicationFiled: March 24, 2010Publication date: April 12, 2012Applicant: SHARP KABUSHIKI KAISHAInventors: Takao Imaoku, Tokio Taguchi
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Patent number: 8154692Abstract: A liquid crystal display device of the present invention includes a liquid crystal display panel, and a light diffusing layer which has first and second major surfaces and which is arranged such that the first major surface opposes a viewer side surface of the liquid crystal display panel. The light diffusing layer includes a first region formed of a first substance which has a first refractive index N1 and a plurality of second regions formed of a second substance which has a second refractive index N2 (<N1). The second regions are arranged in the first region at a predetermined pitch P in one direction in a plane parallel to the second major surface, each of the second regions forms interfaces with the first region, the interfaces being inclined by ?° from a normal of the second major surface. ?B which is expressed by ?B=tan?1 (a/Lb) is not more than 1.Type: GrantFiled: November 21, 2008Date of Patent: April 10, 2012Assignee: Sharp Kabushiki KaishaInventors: Yusuke Nishihara, Iori Aoyama, Tokio Taguchi, Akihiro Yamamoto, Masumi Kubo
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Publication number: 20120081793Abstract: An antireflection film is provided in which a light scattering property is suppressed. In at least one example embodiment, the antireflection film includes, on a surface thereof, a moth-eye structure including a plurality of convex portions such that a width between vertices of adjacent convex portions is no greater than a wavelength of visible light. In at least one example embodiment of this antireflection film, the moth-eye structure does not include a sticking structure formed when tip end portions of the convex portions are joined to each other.Type: ApplicationFiled: December 9, 2011Publication date: April 5, 2012Inventors: Tokio TAGUCHI, Takao Imaoku
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Publication number: 20120069443Abstract: An antireflection film is provided in which a light scattering property is suppressed. In at least one example embodiment, the antireflection film includes, on a surface thereof, a moth-eye structure including a plurality of convex portions such that a width between vertices of adjacent convex portions is no greater than a wavelength of visible light. In at least one example embodiment of this antireflection film, the moth-eye structure does not include a sticking structure formed when tip end portions of the convex portions are joined to each other.Type: ApplicationFiled: May 19, 2010Publication date: March 22, 2012Applicant: SHARP KABUSHIKI KAISHAInventors: Tokio Taguchi, Takao Imaoku
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Publication number: 20110315557Abstract: A method of fabricating a motheye mold according to the present invention includes the steps of: (a) anodizing a surface of an aluminum film (10a) via an electrode (32a) that is in contact with the surface, thereby forming a porous alumina layer which has a plurality of very small recessed portions; (b) after step (a), allowing the porous alumina layer to be in contact with an etchant, thereby enlarging the very small recessed portions of the porous alumina layer; and (c) after step (b), further anodizing the surface to grow the plurality of very small recessed portions. The aluminum film is made of aluminum with a purity of 99.99 mass % or higher. The electrode includes a first electrode portion (32a1) which is made of aluminum with a purity of 99.50 mass % or lower and a second electrode portion (32a2) which is made of aluminum with a higher purity than the aluminum of the first electrode portion and which is interposed between the surface and the first electrode portion.Type: ApplicationFiled: March 2, 2010Publication date: December 29, 2011Inventors: Hidekazu Hayashi, Tokio Taguchi, Kazuhiko Tsuda
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Publication number: 20110279745Abstract: Disclosed is a liquid crystal display panel which causes no gray scale inversion, even when obliquely viewed, and which realizes suppression of a gamma characteristics change and a chromaticity change. The liquid crystal display panel is made of a pair of substrates, at least one of which includes a plurality of pixel electrodes containing red, green and blue pixel electrodes, and a liquid crystal layer arranged between the pair of substrates. The liquid crystal layer is divided for each pixel into a first region and a second region, which have liquid crystal molecules different in the directions of inclination from each other. Both of the liquid crystal molecules positioned in the first region and the second region are oriented either vertically or horizontally when the pair of substrates is viewed in the front direction, and are oriented obliquely with respect to the substrate surface and symmetrically of each other when the pair of substrates is viewed in the cross-sectional direction.Type: ApplicationFiled: August 26, 2009Publication date: November 17, 2011Applicant: SHARP KABUSHIKI KAISHAInventors: Akihiro Yamamoto, Yusuke Nishihara, Iori Aoyama, Tokio Taguchi, Masumi Kubo
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Patent number: 7990499Abstract: The present invention provides a transflective display device capable of reducing a difference in white balance between transmissive display and reflective display. The display device of the present invention is a transflective display device including three or more filters having different colors in a pixel, each of the three or more filters having different colors, including: a transmissive region for displaying an image by transmitting light from a backlight; and a reflective region for displaying an image by reflecting surrounding light, wherein, in the reflective region of at least one of a plurality of filters having different colors used for displaying white in reflective display, a light-reducing film which reduces an amount of at least light having a peak wavelength of a visible light transmission spectrum of the at least one of a plurality of filters is arranged, and the visible light transmission spectrum is measured using a standard light source D65.Type: GrantFiled: December 28, 2006Date of Patent: August 2, 2011Assignee: Sharp Kabushiki KaishaInventors: Akiko Ito, Kozo Nakamura, Shun Ueki, Tokio Taguchi
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Patent number: 7952662Abstract: A transflective display device capable of suppressing white balance from shifting to yellow includes filters of R, G, B, and Y, and a region corresponding to a reflective member in the Y filter is covered with a BM. Therefore, filters used in the reflective display are limited to three colors of R, G, and B, and thereby white balance can be prevented from shifting to yellow.Type: GrantFiled: March 28, 2006Date of Patent: May 31, 2011Assignee: Sharp Kabushiki KaishaInventors: Akiko Itou, Kohzoh Nakamura, Shun Ueki, Tokio Taguchi
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Publication number: 20110123777Abstract: The present invention provides an anti-reflective film that prevents wavelength dispersion from being applied to light transmitted through an anti-reflective film. The present invention is an anti-reflective film, which reduces reflection of visible light on a surface of a substrate by being mounted on the substrate, has a wavelength dispersion structure for applying first wavelength dispersion to visible light transmitting through the anti-reflective film, and contains a wavelength dispersion material for applying second wavelength dispersion to the visible light transmitting through the anti-reflective film, wherein visible light transmitted through the anti-reflective film has flat transmission wavelength dispersion in a visible light region.Type: ApplicationFiled: September 1, 2009Publication date: May 26, 2011Inventors: Takao Imaoku, Tokio Taguchi, Akiyoshi Fujii, Kazuhiko Tsuda
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Patent number: 7938640Abstract: The present invention provides a roller nanoimprint apparatus capable of preventing a workpiece film with nanostructures having been transferred from the mold roller from being uneven in thickness and allowing easy replacement of the mold roller. The present invention is a roller nanoimprint apparatus including a mold roller and continuously transferring nanosized protrusions to a surface of a workpiece film by rotating the mold roller, wherein the mold roller is a cylindrical body, having an outer circumference surface with nanosized recesses formed thereon, the roller nanoimprint apparatus further includes a fluid container having an elastic film inflatable by injecting fluid into the container, the fluid container being arranged in a region defined by an inner circumference surface of the mold roller, the mold roller is mounted or demounted when the elastic film is shrunken, and the mold roller is supported from the inside when the elastic film is inflated.Type: GrantFiled: July 1, 2010Date of Patent: May 10, 2011Assignee: Sharp Kabushiki KaishaInventors: Nobuaki Yamada, Akiyoshi Fujii, Hidekazu Hayashi, Tokio Taguchi
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Publication number: 20110100827Abstract: An antireflection film of the present invention includes a plurality of first raised portions, each of which has a two-dimensional size of not less than 1 ?m and less than 100 ?m when seen in a direction normal to the film, and a plurality of second raised portions, each of which has a two-dimensional size of not less than 10 nm and less than 500 nm when seen in a direction normal to the film. In at least one embodiment, the antireflection film has a first surface shape or a second surface shape that is inverse to the first surface shape relative to a film surface. In the first surface shape, the second raised portions are provided on the first raised portions and between the plurality of first raised portions, and the elevation angle ? of a surface of the first raised portions relative to the film surface is about 90° or more. The antireflection film of the present invention has a more excellent antiglare function than conventional ones.Type: ApplicationFiled: June 4, 2009Publication date: May 5, 2011Applicant: SHARP KABUSHIKI KAISHAInventors: Hidekazu Hayashi, Tokio Taguchi, Akiyoshi Fujii, Nobuaki Yamada
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Publication number: 20110085101Abstract: A liquid crystal display device comprises plural picture elements including a first picture element and a second picture element; plural switching elements; and plural scanning lines. The plural switching elements include a first switching element electrically connected to the first picture element and a second switching element electrically connected to the second picture element. The plural scanning lines include a first scanning line electrically connected to the first switching element and a second scanning line electrically connected to the second switching element. The second scanning line is located between at least part of the first picture element and the first scanning line. The first scanning line is located between at least part of the second picture element and the second scanning line.Type: ApplicationFiled: December 16, 2010Publication date: April 14, 2011Applicant: Sharp Kabushiki KaishaInventors: Tokio TAGUCHI, Kazuhiko Tsuda, Mutsumi Nakajima, Keisuke Yoshida, Junichi Yamada
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Patent number: 7916245Abstract: The present invention provides a transflective display device capable of extending a color reproduction range and reducing a difference in white balance between transmissive display and reflective display. The display device of the present invention is a transflective display device including four or more filters having different colors in a pixel, each of the four or more filters having different colors including: a transmissive region for displaying an image by transmitting light from a backlight; and a reflective region for displaying an image by reflecting surrounding light, wherein at least two of the four or more filters having different colors are different in a proportion of an area of the reflective region, and the proportion of the area is represented by the following formula (1): Proportion of area of reflective region=Area of reflective region/Effective area of filter??(1).Type: GrantFiled: February 2, 2007Date of Patent: March 29, 2011Assignee: Sharp Kabushiki KaishaInventors: Tokio Taguchi, Akiko Ito, Shun Ueki, Kozo Nakamura
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Patent number: 7903206Abstract: An opposed substrate has a configuration in which a retardation film and a polarizer are provided outside a glass substrate, and a color filter is provided inside the glass substrate. The color filter selects a color of light passing through the color filter itself. The color filter has a color reproduction range of 0.079 or more both in a reflection area and in a transmission area. It is preferable that color filters are formed of the same color material and have almost the same thickness in a reflection area and a transmission area. That is, it is preferable that one pixel area has the same configuration in the reflection area as in the transmission area.Type: GrantFiled: June 21, 2005Date of Patent: March 8, 2011Assignee: Sharp Kabushiki KaishaInventors: Kozo Nakamura, Shun Ueki, Tokio Taguchi, Kazuhiko Tsuda