Patents by Inventor Masaru Miyashita
Masaru Miyashita 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: 7527410Abstract: An optical sheet includes a light scattering layer which scatters light made incident from an incident surface to an emission surface side and a plurality of light reflecting portions which reflect light scattered by the light scattering layer to the light scattering layer side. The optical sheet further includes a plurality of light transmitting portions constituted of an air layer for transmitting the scattered light to lenticular sheets. The plurality of the light transmitting portions are arranged along a longitudinal direction so as to form a convex portion with respect to a non-lens surface. Consequently, the light reflecting portions and the light transmitting portions are disposed alternately in stripes along an arrangement direction.Type: GrantFiled: May 19, 2008Date of Patent: May 5, 2009Assignee: Toppan Printing Co., Ltd.Inventors: Kenichi Yoshizawa, Masaru Miyashita
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Publication number: 20080225526Abstract: An optical sheet includes a light scattering layer which scatters light made incident from an incident surface to an emission surface side and a plurality of light reflecting portions which reflect light scattered by the light scattering layer to the light scattering layer side. The optical sheet further includes a plurality of light transmitting portions constituted of an air layer for transmitting the scattered light to lenticular sheets. The plurality of the light transmitting portions are arranged along a longitudinal direction so as to form a convex portion with respect to a non-lens surface. Consequently, the light reflecting portions and the light transmitting portions are disposed alternately in stripes along an arrangement direction.Type: ApplicationFiled: May 19, 2008Publication date: September 18, 2008Applicant: TOPPAN PRINTING CO., LTD.Inventors: Kenichi Yoshizawa, Masaru Miyashita
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Publication number: 20060232859Abstract: In order to provide a dual-surface lens sheet in which a color shift is reduced and positions of unit lenses on a front surface and a back surface are easily aligned even if the unit lenses are disposed in fine pitch when used for a rear projection screen which is used for a display device using a plurality of projector as light sources, a half-column-cylindrical-convex-lens is used in a lens sheet having lens sections on front surface and a back surface such that pitch ratio for disposing the unit lenses on the front surface and a back surface such that pitch ratio of 1:2 to 1:30 and disposition directions of the lens sections are uniform.Type: ApplicationFiled: June 20, 2006Publication date: October 19, 2006Applicant: TOPPAN PRINTING CO., LTD.Inventors: Kazuyoshi Ebina, Takashi Abe, Masaru Miyashita, Susumu Takahashi
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Patent number: 7088508Abstract: In order to provide a dual-surface lens sheet in which a color shift is reduced and positions of unit lenses on a front surface and a back surface are easily aligned even if the unit lenses are disposed in fine pitch when used for a rear projection screen which is used for a display device using a plurality of projector as light sources, a half-column-cylindrical-convex-lens is used in a lens sheet having lens sections on front surface and a back surface such that pitch ratio for disposing the unit lenses on the front surface and the back surface is in a range of 1:2 to 1:30 and disposition directions of the lens sections are uniform.Type: GrantFiled: June 18, 2002Date of Patent: August 8, 2006Assignee: Toppan Printing Co., Ltd.Inventors: Kazuyoshi Ebina, Takashi Abe, Masaru Miyashita, Susumu Takahashi
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Publication number: 20060001965Abstract: In order to provide a micro-lens sheet in which unit lenses are disposed in highly accurate pitch so as to control the light diffusing characteristics of the light emission direction not only in a horizontal direction but also over 360 degrees by using the lens function of one piece of lens sheet, a micro-lens sheet has a micro-lens array section in which unit lenses are disposed in approximate matrix in a second dimensional manner on at least one surface of a base board, and the micro-lens array section is formed on only one surface of the base board, the micro-lens array section includes the unit lens having an aspherical shape, and disposition pitch of neighboring unit lenses is 200 ?m or shorter.Type: ApplicationFiled: August 30, 2005Publication date: January 5, 2006Applicant: TOPPAN PRINTING CO., LTD.Inventors: Kazuyoshi Ebina, Takashi Abe, Masaru Miyashita, Susumu Takahashi
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Patent number: 6970288Abstract: In order to provide a micro-lens sheet in which unit lenses are disposed in highly accurate pitch so as to control the light diffusing characteristics of the light emission direction not only in a horizontal direction but also over 360 degrees by using the lens function of one piece of lens sheet, a micro-lens sheet has a micro-lens array section in which unit lenses are disposed in approximate matrix in a second dimensional manner on at least one surface of a base board, and the micro-lens array section is formed on only one surface of the base board, the micro-lens array section includes the unit lens having an aspherical shape, and disposition pitch of neighboring unit lenses is 200 ?m or shorter.Type: GrantFiled: June 3, 2002Date of Patent: November 29, 2005Assignee: Toppan Printing Co., Ltd.Inventors: Kazuyoshi Ebina, Takashi Abe, Masaru Miyashita, Susumu Takahashi
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Publication number: 20040004770Abstract: In order to provide a micro-lens sheet in which unit lenses are disposed in highly accurate pitch so as to control the light diffusing characteristics of the light emission direction not only in a horizontal direction but also over 360 degrees by using the lens function of one piece of lens sheet, a micro-lens sheet has a micro-lens array section in which unit lenses are disposed in approximate matrix in a second dimensional manner on at least one surface of a base board, and the micro-lens array section is formed on only one surface of the base board, the micro-lens array section includes the unit lens having an aspherical shape, and disposition pitch of neighboring unit lenses is 200 &mgr;m or shorter.Type: ApplicationFiled: January 31, 2003Publication date: January 8, 2004Inventors: Kazuyoshi Ebina, Takashi Abe, Masaru Miyashita, Susumu Takahashi
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Publication number: 20030169332Abstract: In order to provide a dual-surface lens sheet in which a color shift is reduced and positions of unit lenses on a front surface and a back surface are easily aligned even if the unit lenses are disposed in fine pitch when used for a rear projection screen which is used for a display device using a plurality of projector as light sources, a half-column-cylindrical-convex-lens is used in a lens sheet having lens sections on front surface and a back surface such that pitch ratio for disposing the unit lenses on the front surface and the back surface is in a range of 1:2 to 1:30 and disposition directions of the lens sections are uniform.Type: ApplicationFiled: February 20, 2003Publication date: September 11, 2003Applicant: Toppan Printing Co., LtdInventors: Kazuyoshi Ebina, Takashi Abe, Masaru Miyashita, Susumu Takahashi
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Patent number: 6385088Abstract: A non-volatile memory device including a plurality of block, each including: a main bit line; a plurality of sub-bit lines to which memory transistors are connected and which are arranged in parallel with respect to the main bit line; and two cascade-connected selection gates which are provided between the main bit line and sub-bit lines and which selectively connect the sub-bit lines.Type: GrantFiled: February 13, 1996Date of Patent: May 7, 2002Assignee: Sony CorporationInventors: Hideki Arakawa, Akira Tanaka, Kenshiro Arase, Masaru Miyashita
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Patent number: 5784325Abstract: A semiconductor nonvolatile memory device comprised of bit lines and source lines arranged in a hierarchy of main lines and sub-lines, the main lines and the sub-lines being selectively connected in accordance with the operation of the memory device and memory cells being connected in parallel between the sub-source lines and the sub-bit lines, wherein data is written by introducing electrons from the full channel surface to the charge-storage layer by FN tunneling and is erased by drawing out the electrons in the charge-storing layer from the drain side by FN tunneling. Operation is made possible by a single power source and the area of the cell of the full one transistor memory type is made smaller.Type: GrantFiled: January 6, 1997Date of Patent: July 21, 1998Assignee: Sony CorporationInventors: Kenshiro Arase, Masaru Miyashita
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Patent number: 4806432Abstract: The copper-foiled laminated sheet of the invention is used to prepare a printed circuit sheet having see-throughness after patterning by etching of the copper foil. Different from conventional copper-foiled laminates using an electrolytic copper foil having a surface roughness of 10 or larger, the inventive laminate is prepared using a rolled copper foil having a surface roughness of 1.5 to 5 so that the surface of the adhesive layer, from which the copper foil has been removed by etching, has no undue roughness as a replica of the copper foil surface not to irregularly diffuse the light giving a parallel light-beam transmission of at least 50% and overall light transmission of at least 70% to ensure good see-through visibility.Type: GrantFiled: November 10, 1986Date of Patent: February 21, 1989Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Yoshitugu Eguchi, Masaru Miyashita, Hitoshi Arai, Yoshimi Ogushi