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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Takahashi; Naoki
Address:
Ibaraki, JP
No. of patents:
19
Patents:












Patent Number Title Of Patent Date Issued
7841730 Light source device and crystal display device November 30, 2010
A light source comprising sidelight type backlight light guide plate (L), wherein a transmittance angle dependent layer (T1) which transmits normally incident light and reflects obliquely incident light is disposed on one surface of the sidelight type backlight light guide plate (L), and
7746424 High luminance polarizing plate, and liquid crystal panel and image display using same June 29, 2010
A high-brightness polarizing plate of the present invention comprises a polarizing plate that comprises a polarizer and a protective film prepared on one or both sides of the polarizer, a brightness enhancement film and an adhesive layer through which the polarizing plate and the bri
7746421 Optical element, light condensation backlight system, and liquid crystal display June 29, 2010
An optical element comprising: a polarizing element (A), separating incident light into polarization to then emit light, and made of a cholesteric liquid crystal, and a linearly polarized light reflection polarizer (B) transmitting linearly polarized light with one polarization axis
7742136 Manufacturing method for sheet with anti-counterfeit functions June 22, 2010
A sheet with anti-counterfeit functions for making counterfeiting highly difficult in the case where authentication information is recorded using the properties of cholesteric liquid crystal is provided. A cholesteric liquid crystal layer 110 having a selective reflected wavelength band
7633678 Optical element, polarizing element, lighting device, and liquid crystal display December 15, 2009
An optical element of the invention comprises at least two laminated layers of reflective polarizer; and at least one retardation layer for changing polarization properties laminated between the reflective polarizers, the combination of the layers being designed so as to provide a in
7630134 Optical element, polarizing element, lighting device, and liquid crystal display December 8, 2009
An optical element of the invention comprises at least two laminated layers of reflective polarizer; and at least one retardation layer for changing polarization properties laminated between the reflective polarizers, the combination of the layers being designed so as to provide a in
7593079 Optical device, light-condensing backlight system, and liquid crystal display September 22, 2009
An optical element of the invention comprises at least three laminated circular-polarization-type-reflection polarizers (a) whose wavelength bands for selective reflection of polarized light overlap one another; a layer (b1) which is placed between at least a pair of the circular-pol
7557883 Polarizing plate with optical compensation layer, method of producing the same, and liquid cryst July 7, 2009
A polarizing plate with optical compensation layers that performs a wide viewing angle compensation with respect to a liquid crystal cell, allows circularly polarized light to be obtained over a wide range of light wavelengths, contributes to the reduction in thickness, prevents thermal
7492516 Optical element, polarizing element, lighting device, and liquid crystal display February 17, 2009
An optical element of the invention comprises at least two laminated layers of reflective polarizer; and at least one retardation layer for changing polarization properties laminated between the reflective polarizers, the combination of the layers being designed so as to provide a in
7446848 Optical element, condensing backlight system and liquid crystal display November 4, 2008
An optical element of the invention comprises at least two laminated circular-polarization-type-reflection polarizers (a) whose wavelength bands for selective reflection of polarized light overlap one another, wherein the at least two circular-polarization-type-reflection polarizer
7393570 Broad-band-cholesteric liquid-crystal film, process for producing the same, circularly polarizin July 1, 2008
A broad band cholesteric liquid crystal film of the present invention is a cholesteric liquid crystal film obtained by coating a liquid crystal mixture containing a polymerizable mesogen compound (a), a polymerizable chiral agent (b) and a photoisomerizable material (c) on a substrate to
7326451 Rotatory polarization plate, optical element, light condensation backlight system and liquid cry February 5, 2008
A rotatory polarization plate capable of extracting an emission polarized light from an incident polarized light and rotating an azimuth angle of an polarization axis of the incident polarized light, wherein a rotatory polarization angle of the azimuth angle is changed by an incidence an
7317498 Viewing angle magnification liquid crystal display unit January 8, 2008
A viewing angle magnification liquid crystal display of this invention comprising: at least a backlight system containing a polarization element (A) obtained by disposing a retardation layer (b) between at least two layers, included in a reflection polarizer (a), and having respective
7294303 Broad band-cholesteric liquid crystal film and process for producing the same, circularly polari November 13, 2007
A broad band cholesteric liquid crystal film of the present invention comprises a cholesteric liquid crystal film obtained by polymerizing a liquid crystal mixture containing a polymerizable mesogen compound (a), a polymerizable chiral agent (b) and a photopolymerization initiator (c)
6970213 Optical film and liquid-crystal display device using the optical film November 29, 2005
An optical film constituted by a laminate of a polarizer and a reflective polarizing film through an acrylic-based pressure-sensitive adhesive agent, the polarizer having an anti-glare layer, wherein the optical film has a haze (H) in a range of from 5% to 30%. Preferably, a haze (H1) of
6958797 Optical film having low chromaticity variation and quarter wavelength plate, and liquid crystal October 25, 2005
An optical film in which a function of a brightness enhancement film is maintained and variations in brightness and chromaticity within a film plane are suppressed is provided. An optical film is a laminate of an absorptive dichroic polarizing plate and a brightness enhancement film. A
6724446 Illumination device and/or a liquid crystal display device April 20, 2004
There is provided an illuminator having a planar light source unit having reflectance of from 50 to 90% with respect to light in a state in which the light is emitted from a light source provided separately from the planar light source and incident on the planar light source unit, and a
6661487 Laminated optical film, method for producing the same film and liquid-crystal display device usi December 9, 2003
A method of producing a laminated optical film constituted by a laminate of a plurality of optical films different in area, the method including the steps of: laminating an optical film (B) having a plurality of rectangular holes parallel to one another, on at least one surface of an opt
6654081 Optic element, illumination device and/or liquid-crystal display device November 25, 2003
There is provided an optical element having: a laminate including a reflective type polarizer for separating incident light into polarized light components through reflection and transmission, and a dichromatic polarizer, wherein a variation of hue between two points calculated by the










 
 
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