WO2012157662A1 - 三次元画像表示対応液晶表示装置に適した偏光板及び液晶表示装置 - Google Patents
三次元画像表示対応液晶表示装置に適した偏光板及び液晶表示装置 Download PDFInfo
- Publication number
- WO2012157662A1 WO2012157662A1 PCT/JP2012/062476 JP2012062476W WO2012157662A1 WO 2012157662 A1 WO2012157662 A1 WO 2012157662A1 JP 2012062476 W JP2012062476 W JP 2012062476W WO 2012157662 A1 WO2012157662 A1 WO 2012157662A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- film
- liquid crystal
- polarizing plate
- polarizer
- crystal display
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
- G02B30/25—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type using polarisation techniques
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3083—Birefringent or phase retarding elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3083—Birefringent or phase retarding elements
- G02B5/3091—Birefringent or phase retarding elements for use in the UV
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/13362—Illuminating devices providing polarized light, e.g. by converting a polarisation component into another one
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
Definitions
- the present invention relates to a polarizing plate and a liquid crystal display device. Specifically, when viewing the screen displayed on the liquid crystal display device through the polarizing filter, the screen brightness is zero no matter what the clockwise direction of the polarizing axis of the polarizing filter the polarization axis of the polarizing filter is.
- the present invention relates to a polarizing plate suitable for a three-dimensional display-compatible liquid crystal display device having excellent visibility, and a liquid crystal display device using the same.
- 3D images can be viewed as three-dimensional images by viewing the images prepared for the left and right eyes separately with the left and right eyes of the individual.
- Various types of 3D video display methods have been proposed, and can be roughly divided into a type requiring special glasses and a type visible with the naked eye.
- a method using a wavelength selection filter or a polarization filter has been proposed at present from one that used a color filter.
- Examples of a method using a polarizing filter include an active method and a passive method.
- the active method is also called the time division method, and images for the left eye and right eye are displayed alternately by dividing the time, and by wearing dedicated glasses with polarizing filters that open and close in synchronization with image switching.
- the passive method means that the left-eye and right-eye images are presented as two orthogonally polarized lights, or circularly polarized light with different rotation directions on the left and right, and the polarization axes orthogonal to the left and right, or circularly polarized light with different rotation directions.
- This is a method of visually recognizing a three-dimensional image by filtering through dedicated glasses made of a polarizing filter having s.
- Such 3D images can be provided not only in movies but also in various displays such as liquid crystal display devices (Non-Patent Document 1).
- a liquid crystal display displays an image by controlling light passing through two polarizing plates by a liquid crystal cell that is controlled to be turned on and off by a change in voltage.
- the liquid crystal display device has a backlight light source and a liquid crystal cell disposed between two polarizing plates as main components, and also has various optical function films such as a lens sheet and a diffusion sheet as necessary.
- a polarizing plate which is a constituent member of an LCD, has a characteristic of selectively transmitting only polarized light having an amplitude in a specific direction. Therefore, the light emitted from the LCD is polarized.
- the polarizing plate generally comprises a polarizer made of stretched polyvinyl alcohol (PVA) and a dichroic dye such as iodine, and a polarizer protective film that protects both sides of the polarizer.
- PVA stretched polyvinyl alcohol
- a dichroic dye such as iodine
- a polarizer protective film As a polarizer protective film, a triacetyl cellulose film (TAC film) that does not affect polarization and has no birefringence has been mainly used from the viewpoint of optical properties.
- TAC film triacetyl cellulose film
- Patent Documents 1 to 3 These oriented films are excellent in mechanical strength and durability, but have birefringence unlike a TAC film. When the polarized light passes through a film having birefringence, optical distortion is generated, and as a result, a reduction in luminance is likely to occur.
- the alignment axis of the alignment film and the polarizer are used from the viewpoint of preventing a decrease in luminance or reducing a change in the polarization state due to birefringence. It was necessary to laminate them so that their polarization axes were parallel to each other (Patent Document 3).
- the polarization axis direction of the polarizing filter (for example, polarizing glasses) is such that the screen brightness is maximized when the liquid crystal display device is viewed from the front.
- the polarization axis direction of the polarizing filter is orthogonal to the polarization axis of the liquid crystal display device, and the brightness transmitted through the polarizing filter becomes zero, so that the display image can be seen. There was a problem that could not be.
- a first object of the present invention is to provide a luminance that transmits through a polarizing filter arranged so that the polarizing axis of the polarizing filter is parallel to the polarizing axis of the liquid crystal display device. Is not significantly reduced, and the luminance that transmits through the polarizing filter arranged so that the polarizing axis of the polarizing filter is perpendicular to the polarizing axis of the liquid crystal display device is sufficient for visually recognizing the image. It is to provide a polarizing plate for providing a liquid crystal display device for original display, such a liquid crystal display device, and a member thereof.
- a further object of the present invention is to provide a polarizing plate for providing a three-dimensional display compatible liquid crystal display device in which the occurrence of rainbow-like color spots is suppressed, such a liquid crystal display device, and a member thereof. is there.
- the present inventors have found that the alignment axis of the alignment film or the axis orthogonal to the alignment axis and the polarization axis are not suitable when the alignment film is bonded to the polarizer, contrary to conventional technical common sense. It has been found that the above first object is surprisingly achieved by adjusting so that and have a predetermined inclination. As a result of further investigations, the inventors have adopted the alignment film having a predetermined retardation as the alignment film, and the white light-emitting diode as the light source, whereby the above-described further object can be achieved. I found out.
- the polarizing plate, wherein the oriented film is formed from a polyester resin or a polycarbonate resin.
- the polarizing plate, wherein the alignment film has a retardation of 3000 to 30000 nm.
- the polarizing plate wherein a ratio of the retardation of the oriented film to the retardation in the thickness direction (Re / Rth) is 0.2 to 1.2.
- a liquid crystal display device having a backlight source, two polarizing plates, and a liquid crystal cell disposed between the two polarizing plates, wherein at least one of the polarizing plates is any one of (1) to (5)
- the liquid crystal display device which is a polarizing plate of description.
- the liquid crystal display device, wherein the backlight source is a white light emitting diode.
- the liquid crystal display device for visually recognizing a three-dimensional image through a polarizing filter.
- At least the following effects (1) and (2) can be obtained by configuring a liquid crystal display device for displaying a three-dimensional image using the polarizing plate of the present invention.
- the liquid crystal that passes through the polarizing filter when the polarizing filter is arranged so that the polarization axis of the polarizer on the viewing side of the liquid crystal display device is parallel to the polarizing axis of the polarizing filter that the viewer usually wears The brightness of the light emitted from the display device is not significantly reduced as compared with the case where a conventional polarizing plate is used.
- the polarization filter is arranged so that its polarization axis is perpendicular to the polarization axis of the polarizer, the light emitted from the liquid crystal display device that transmits the polarization filter visually recognizes a three-dimensional image. It has enough brightness to Therefore, by using the liquid crystal display device for three-dimensional image display using the polarizing plate of the present invention, the viewer wearing the polarizing filter is in a posture in which the polarizing axis of the filter is parallel to the polarizing axis of the polarizer.
- the conventional polarizing plate is a polarizing plate in which a non-oriented film is used as a protective film for a polarizer, or an orientation axis or orientation of a protective orientation film with respect to a polarizing axis of a polarizer as a protective film for a polarizer. It means a polarizing plate whose axis perpendicular to the axis is parallel.
- axis perpendicular to the orientation axis of the oriented film will be appropriately abbreviated as “perpendicular axis”.
- a liquid crystal display device using a white light emitting diode as a light source using the preferred polarizing plate of the present invention, it is possible to suppress the display of rainbow spots when viewing the liquid crystal display screen from any direction through a polarizing filter. Is possible. Therefore, by using the preferred polarizing plate of the present invention, it is possible to visually recognize an image from an arbitrary direction without hindering accurate image recognition by rainbow spots.
- the polarizing plate of the present invention is a polarizing plate having a polarizer protective film on both sides of the polarizer, wherein at least one of the polarizer protective films is an alignment film, and the alignment axis of the alignment film is perpendicular to the polarization axis of the polarizer.
- the inclination of the axis is 1 ° or more and less than 45 °.
- the alignment film when used as a polarizer protective film, from the viewpoint of suppressing reduction in luminance and optical distortion, polarization is performed so that the polarization axis of the polarizer and the alignment axis of the alignment film are parallel to each other.
- the child and the orientation film were bonded together.
- the polarizing plate of the present invention has a structure in which the polarization axis of the polarizer and the alignment axis of the alignment film are not parallel to each other but are inclined so as to be inclined at an angle of 1 ° or more and less than 45 °.
- the polarizing axis of the polarizer of the polarizing plate and the alignment axis of the polarizing filter are arranged at an angle that is parallel to each other.
- the polarizing axis of the polarizer of the polarizing plate and the alignment axis of the polarizing filter are arranged at an angle that is parallel to each other.
- the light emitted from the liquid crystal display device has polarized light due to the influence of the polarizing plate, particularly the polarizing plate disposed on the viewing side of the liquid crystal cell.
- the polarizing filter is The brightness of the transmitted light is zero.
- the polarizing plate of the present invention when used, optically appropriate conversion (polarization direction distribution) is caused by the influence of the polarizing polarizer protective film having birefringence to the polarization of the light emitted from the liquid crystal display device. Conversion). Therefore, even when the polarization axis of the polarizing filter worn by the viewer is orthogonal to the polarization axis of the polarizer disposed on the viewer side of the liquid crystal cell, the polarization axis of the emitted light is completely the same as the polarization axis of the polarizing filter. The screen brightness can be ensured without being orthogonal to the screen.
- Such an effect is that, when the polarization axis of the polarizer and the alignment axis or the orthogonal axis of the alignment film are parallel, the optical conversion effect of the alignment film cannot be obtained, and the polarization axis of the polarizer and the alignment film are aligned.
- the axis has an angle of 1 ° or more and less than 45 °, or when the perpendicular axis of the oriented film and the polarization axis of the polarizer intersect at an angle of 1 ° or more and less than 45 °.
- the inclination of the orientation axis or the orthogonal axis of the orientation film with respect to the polarization axis of the polarizer is 1 ° or more, preferably 2 ° or more, more preferably 3 ° or more. More preferably, it is more than 5 °, even more preferably 5 ° or more, and particularly preferably 7 ° or more.
- the optical conversion effect by the alignment film can be suitably achieved.
- the direction of the orientation axis of the oriented film can be measured with a molecular orientation meter.
- the polarizing filter is obtained by adjusting the inclination of the orientation axis or the orthogonal axis of the orientation film with respect to the polarization axis of the polarizer within the above range.
- the polarization axis is arranged so as to be orthogonal to the polarization axis of the polarizer, the light emitted from the liquid crystal display device that passes through the polarization filter has sufficient luminance to visually recognize a three-dimensional image. Can be.
- the light that passes through the polarizing filter has sufficient luminance for visually recognizing a three-dimensional image.
- the rate of increase (%) obtained by the following equation is as follows: It means 0.1% or more, preferably 1% or more, more preferably 3% or more, and further preferably 5% or more.
- Increasing rate (%) [(luminance at the time of direct current of the present invention) ⁇ (luminance at the time of direct current of the present invention)] / (luminance at the time of conventional parallel) ⁇ 100
- “brightness in the present invention” means that the light emitted from the liquid crystal display device having the polarizing plate of the present invention as the polarizing plate on the viewing side is the polarization axis of the polarizer of the polarizing plate. This is the luminance that passes through a polarizing filter arranged so that its polarization axis is orthogonal (here, “the polarization axis” is the polarization axis of the polarizing filter).
- “brightness during direct travel” means that light emitted from the polarizing plate in the state where the polarizing axis of the polarizing plate on the viewing side and the polarizing axis of the polarizing filter are arranged to be orthogonal It is the brightness
- “Conventional brightness in the perpendicular direction” means a conventional polarizing plate having a structure in which a polarizer and an alignment film are laminated so that the polarization axis of the polarizer and the alignment axis of the alignment film are parallel to each other. It is the brightness at the time of orthogonality when adopted as a plate.
- the light emitted from the conventional polarizing plate has a luminance of light transmitted through a polarizing filter arranged so that the polarization axis of the polarizer of the polarizing plate and the polarization axis thereof are orthogonal to each other. Brightness ".
- “Conventional brightness in parallel” means that light emitted from a conventional polarizing plate passes through a polarizing filter arranged so that the polarization axis of the polarizer of the polarizing plate is parallel to the polarization axis.
- the polarization axis is the polarization axis of the polarizing filter).
- the inclination of the orientation axis or the orthogonal axis of the orientation film with respect to the polarization axis of the polarizer increases (approaching 45 °)
- the observation is performed in a normal state (the polarization axis of the polarizing filter worn by the viewer and the viewing side of the liquid crystal device).
- the brightness that is, the front brightness in the normal state
- the inclination of the orientation axis of the orientation film with respect to the polarization axis of the polarizer is desirably less than 45 °.
- the polarization axis of the polarizer and the alignment axis or the orthogonal axis of the alignment film Is formed to be less than 45 °, preferably 40 ° or less, more preferably 30 ° or less, still more preferably 20 ° or less, and even more preferably 15 ° or less. Preferably, it is still more preferably 10 ° or less.
- the polarization axis of the polarizer of the liquid crystal display device and the polarization axis of the polarization filter usually worn by the viewer are parallel.
- the polarizing filter is arranged as described above, the luminance of the light emitted from the liquid crystal display device that passes through the polarizing filter is not significantly reduced as compared with the case where the conventional polarizing plate is used. An effect is obtained.
- the fact that the luminance is not significantly reduced as compared with the case where a conventional polarizing plate is used indicates that the retention rate (%) obtained by the following formula is 58 as shown in Examples described later. % Or more, preferably 65% or more, more preferably 70% or more, still more preferably 80% or more, still more preferably 90% or more.
- the luminance in the parallel state of the present invention means that light emitted from a liquid crystal display device having the polarizing plate of the present invention as a polarizing plate on the viewing side is the polarization axis of the polarizer of the polarizing plate. This is the luminance of light transmitted through a polarizing filter arranged so that its polarization axis is parallel (“the polarization axis” means the polarization axis of the polarizing filter).
- “conventional brightness when parallel” means that light emitted from a liquid crystal display device using the above conventional polarizing plate as a polarizing plate on the viewing side is the polarization axis of the polarizer of the polarizing plate and its polarization. It is the brightness
- the polarizing plate of the present invention is desirably an oriented film in which at least one of the polarizer protective films has a retardation of 3000 to 30000 nm.
- the preferable lower limit of retardation is 4000 nm
- the more preferable lower limit is 4500 nm
- the still more preferable lower limit is 5000 nm.
- rainbow spots may occur when the screen is observed from an oblique direction through a polarizing filter.
- the orientation film used as the protective film of the polarizing plate of the present invention further has a specific Re / Rth ratio. It is preferable to satisfy.
- the upper limit of retardation is 30000 nm. Even if an oriented film having a retardation of more than that is used, not only a further improvement effect of visibility is not obtained, but also the thickness of the film is considerably increased, and the handling property as an industrial material is reduced, which is preferable. Absent. From such a viewpoint, the upper limit value of the more preferable retardation is 25000 nm, more preferably 20000 nm, and still more preferably 15000 nm. In the present invention, retardation can be determined by measuring the refractive index and thickness in the biaxial direction, or can be measured using a commercially available automatic birefringence measuring device such as RETS-100 (Otsuka Electronics Co., Ltd.). it can.
- the alignment film having a retardation of 3000 to 30000 nm may be used as a protective film on both sides of the polarizer, or may be used as one of the protective films.
- an oriented film having a retardation of 3000 to 30000 nm is used only on one side of the polarizer, it is preferably disposed in the liquid crystal display device so that the side to which the film is applied is located on the viewing side.
- a triacetyl cellulose film (TAC film), an acrylic film, or a norbornene film is provided on the other surface of the polarizer.
- a non-oriented or low retardation film as typified by can be used as a protective film.
- the polarizing plate of the present invention may be used as both polarizing plates, or only as one polarizing plate. Also good. When only one of the two polarizing plates is used as the polarizing plate of the present invention, it is preferable to use the polarizing plate of the present invention as the polarizing plate disposed on the viewing side of the liquid crystal cell.
- the present inventor analyzed the cause of the generation of rainbow spots and found out that it was caused by the retardation of the alignment film and the emission spectrum of the backlight light source.
- a fluorescent tube such as a cold cathode tube or a hot cathode tube is used as a backlight source of a liquid crystal display device.
- the spectral distribution of a fluorescent lamp such as a cold cathode tube or a hot cathode tube shows an emission spectrum having a plurality of peaks, and these discontinuous emission spectra are combined to obtain a white light source.
- the transmitted light intensity varies depending on the wavelength. For this reason, when the backlight light source has a discontinuous emission spectrum, only a specific wavelength is strongly transmitted, and it is considered that a rainbow-like color spot occurs depending on the observation angle.
- a combination of a specific backlight light source and an oriented film having a specific retardation may be an edge light method using a light guide plate, a reflection plate, or the like as a constituent member, or may be a direct type.
- a white light emitting diode LCD
- a white LED is a phosphor type, that is, an element that emits white light by combining a light emitting diode that emits blue light or ultraviolet light using a compound semiconductor and a phosphor, or an organic light emitting diode (Organic light-emitting diode: OLED). That is.
- white light-emitting diodes which are composed of light-emitting elements that combine blue light-emitting diodes using compound semiconductors with yttrium, aluminum, and garnet-based yellow phosphors, have a continuous and broad emission spectrum and are also efficient in light emission. Since it is excellent, it is suitable as the backlight light source of the present invention.
- Organic light emitting diodes are also preferred because they have a continuous and broad emission spectrum.
- the continuous broad emission spectrum is a continuous broad emission spectrum in which the emission spectrum is continuous in the visible light region and the emission spectrum intensity does not become zero in the wavelength region of at least 450 to 650 nm. It is.
- liquid crystal display device of the present invention since a white LED with low power consumption is used, an effect of energy saving can be achieved.
- the linearly polarized light emitted from the polarizer is disturbed when passing through the birefringent body.
- the transmitted light shows an interference color peculiar to retardation which is a product of birefringence and thickness of the alignment film. Therefore, when a discontinuous emission spectrum such as a cold cathode tube or a hot cathode tube is used as the light source, the transmitted light intensity varies depending on the wavelength, resulting in a rainbow-like color spot.
- white light emitting diodes have a continuous and broad emission spectrum in the visible light region. Therefore, when attention is paid to the envelope shape of the interference color spectrum by the transmitted light transmitted through the birefringent body, it is possible to obtain a spectrum similar to the emission spectrum of the light source by controlling the retardation of the alignment film.
- the emission spectrum of the light source and the envelope shape of the interference color spectrum by the transmitted light that has passed through the birefringent body are similar to each other, so that rainbow-like color spots do not occur and the visibility is remarkable. It is thought to improve.
- a white light-emitting diode having a broad emission spectrum is used as a light source, and a polarizing plate having at least one protective film as the polarizing film having the above-mentioned specific retardation is used as a polarizing plate.
- the envelope shape of the transmitted light spectrum can be approximated to the emission spectrum of the light source.
- the material of the alignment film used as the protective film of the polarizer is not particularly limited as long as it can form a film having alignment properties, and is arbitrary.
- examples thereof include polyester resins such as polyethylene terephthalate and polyethylene naphthalate, polycarbonate resins, polystyrene resins, polyether ether ketone resins, polyphenylene sulfide resins, and cycloolefin polymers.
- a polycarbonate resin or a polyester resin is preferable from the viewpoint of excellent transparency, heat resistance, and mechanical strength.
- Polycarbonate resin is a polyester of carbonic acid and glycol or dihydric phenol.
- aromatic polycarbonate having a structural unit of carbonic acid and 2,2′-bis (4-hydroxyphenyl) -propane (commonly referred to as bisphenol-A), but also 1,1-bis (4-hydroxy), for example.
- Phenyl) -alkylcycloalkane, 1,1-bis (3-substituted-4-hydroxyphenyl) -alkylcycloalkane, 1,1-bis (3,5-substituted-4-hydroxyphenyl) -alkylcycloalkane, 9 , 9-Bis (4-hydroxyphenyl) fluorenes A homo- or copolymer polycarbonate containing at least one dihydric phenol selected from the group consisting of monomer components, and a polycarbonate containing the above dihydric phenol and bisphenol A as monomer components A mixture of the above dihydric phenol and bisphenol A as a monomer It may be used copolymerized polycarbonate to minute.
- the polycarbonate film can be manufactured according to a known method, and for example, can be manufactured by the following procedure.
- a non-oriented sheet obtained by melting polycarbonate and extruding it into a sheet can be stretched in one direction (or two directions if necessary) at a temperature equal to or higher than the glass transition temperature to obtain an oriented film.
- the non-oriented polycarbonate sheet a commercially available product or a solution prepared by solution film formation can be suitably used.
- the polyester resin is obtained by a polycondensation reaction between a dicarboxylic acid component and a glycol component.
- the dicarboxylic acid component include terephthalic acid, isophthalic acid, naphthalenedicarboxylic acid
- the glycol component include ethylene glycol, diethylene glycol, 1,4-butanediol, and neopentyl glycol.
- polyethylene terephthalate and polyethylene naphthalate are preferable from the viewpoint of strength and transparency, and polyethylene terephthalate is particularly preferable.
- the polyester may contain other copolymer components, but from the viewpoint of mechanical strength, the amount of copolymer components is preferably small, preferably 3 mol% or less, more preferably 2 mol% or less, still more preferably 1. 5 mol% or less.
- the most common production method for producing a polyester film is that a non-oriented polyester obtained by melting a polyester resin and extruding into a sheet is formed in the machine direction at a temperature equal to or higher than the glass transition temperature by utilizing the difference in roll speed.
- An example is a method in which after stretching, the film is stretched in the transverse direction by a tenter and subjected to heat treatment.
- the oriented film of the present invention may be a uniaxially stretched film or a biaxially stretched film as long as the effects of the present invention described above are exhibited.
- this rainbow spot is that the biaxially stretched film consists of refractive index ellipsoids having different refractive indexes in the running direction, width direction, and thickness direction, and the retardation becomes zero due to the light transmission direction inside the film ( This is because there is a direction in which the refractive index ellipsoid appears to be a perfect circle. Therefore, when the liquid crystal display screen is observed from a specific oblique direction, a point where the retardation becomes zero may be generated, and a rainbow-like color spot is generated concentrically around that point.
- the angle ⁇ increases as the birefringence in the film increases, and the rainbow-like color increases. Spots are difficult to see.
- the biaxially stretched film tends to reduce the angle ⁇ , and therefore the uniaxially stretched film is more preferable because rainbow-like color spots are less visible.
- the present invention has biaxiality (biaxiality) in a range that does not substantially cause rainbow-like color spots or a range that does not cause rainbow-like color spots in a viewing angle range required for a liquid crystal display screen. It is preferable.
- the difficulty of seeing the rainbow-like color spots can be determined using the difference between retardation (in-plane retardation) and thickness direction retardation (Rth) as an index.
- the retardation in the thickness direction means the average of the retardation obtained by multiplying the two birefringences ⁇ Nxz and ⁇ Nyz by the film thickness d when viewed from the cross section in the thickness direction of the film.
- the smaller the difference between the in-plane retardation and the thickness direction retardation the more isotropic the birefringence action due to the observation angle, and the smaller the change in retardation due to the observation angle. Therefore, it is considered that rainbow-like color spots due to the observation angle are less likely to occur.
- the ratio of the retardation of the oriented film of the present invention to the thickness direction retardation (Re / Rth) is preferably 0.2 or more, more preferably 0.5 or more, and still more preferably 0.6 or more. As the ratio of the retardation to the retardation in the thickness direction (Re / Rth) is larger, the birefringence action is more isotropic, and the occurrence of iridescent color spots due to the observation angle is less likely to occur. In a complete uniaxial (uniaxial symmetry) film, the ratio of the retardation to the retardation in the thickness direction (Re / Rth) is 2.0.
- the ratio of the retardation of the oriented film of the present invention to the retardation in the thickness direction is preferably 1.2 or less, more preferably 1 or less.
- the ratio of the retardation to the thickness direction retardation (Re / Rth) does not have to be 2.0, and 1.2 or less is sufficient. is there. Even when the ratio is 1 or less, it is possible to satisfy the viewing angle characteristics (180 degrees left and right, 120 degrees up and down) required for the liquid crystal display device.
- the oriented film used in the polarizing plate of the present invention preferably has a tear strength of 100 mN or more.
- the tear strength can be measured by the method shown in the examples described later.
- controlling the retardation of the oriented film to a specific range can be carried out by appropriately setting the stretching ratio, the stretching temperature, and the thickness of the film.
- the higher the stretching ratio, the lower the stretching temperature, and the thicker the film the higher the retardation.
- the lower the stretching ratio, the higher the stretching temperature, and the thinner the film the lower the retardation.
- the longitudinal draw ratio is preferably 1.0 to 3.5 times, particularly preferably 1.0 to 3.0 times with respect to the transverse draw ratio.
- the transverse draw ratio is preferably 2.5 to 6.0 times, particularly preferably 3.0 to 5.5 times.
- setting the stretching temperature low is a preferable measure for increasing the retardation.
- the longitudinal stretching temperature and the transverse stretching temperature are preferably 80 to 130 ° C, more preferably 90 to 120 ° C. In the subsequent heat treatment, the treatment temperature is preferably from 100 to 250 ° C, more preferably from 180 to 245 ° C.
- the thickness of the oriented film of the present invention is arbitrary, but is preferably in the range of 15 to 200 ⁇ m. In principle, it is possible to obtain a retardation of 3000 nm or more even with a film having a thickness of less than 15 ⁇ m. However, in that case, the anisotropy of the mechanical properties of the film becomes remarkable, and it becomes easy to cause tearing, tearing, etc., and the practicality as an industrial material is remarkably lowered. A particularly preferable lower limit of the thickness is 25 ⁇ m. On the other hand, from the viewpoint of practicality as a polarizer protective film, the upper limit of the thickness is 200 ⁇ m. If it exceeds 200 ⁇ m, the thickness of the polarizing plate becomes too thick, which is not preferable. A particularly preferable upper limit of the thickness is 100 ⁇ m, which is about the same as a general TAC film.
- the thickness unevenness of the film is small. Since the stretching temperature and the stretching ratio greatly affect the thickness variation of the film, it is necessary to optimize the film forming conditions from the viewpoint of the thickness variation. In particular, when the longitudinal stretching ratio is lowered to make a retardation difference, vertical thickness unevenness may become remarkable. Since there is a region where the vertical thickness unevenness becomes very bad in a specific range of the draw ratio, it is desirable to set the film forming conditions outside this range.
- the thickness unevenness of the film of the present invention is preferably 5.0% or less, more preferably 4.5% or less, still more preferably 4.0% or less, and 3.0% or less. It is particularly preferred.
- the oriented film preferably has a light transmittance of 20% or less at a wavelength of 380 nm for the purpose of suppressing deterioration of an optical functional dye such as an iodine dye used in a polarizer.
- the light transmittance at 380 nm is more preferably 15% or less, further preferably 10% or less, and particularly preferably 5% or less. If the light transmittance is 20% or less, the optical functional dye can be prevented from being deteriorated by ultraviolet rays.
- the light transmittance in the present invention is measured by a method perpendicular to the plane of the film, and can be measured using a spectrophotometer (for example, Hitachi U-3500 type).
- the ultraviolet absorber used in the present invention is a known substance.
- the ultraviolet absorber include an organic ultraviolet absorber and an inorganic ultraviolet absorber, and an organic ultraviolet absorber is preferable from the viewpoint of transparency.
- organic ultraviolet absorbers include benzotriazole compounds, benzophenone compounds, cyclic imino ester compounds, and combinations thereof. From the viewpoint of durability, benzotriazole compounds and cyclic imino ester compounds are particularly preferable.
- benzophenone ultraviolet absorber examples include 2- [2′-hydroxy-5 ′-(methacryloyloxymethyl) phenyl] -2H-benzotriazole, 2- [2 ′.
- cyclic imino ester UV absorbers examples include 2,2 ′-(1,4-phenylene).
- additives include inorganic particles, heat resistant polymer particles, alkali metal compounds, alkaline earth metal compounds, phosphorus compounds, antistatic agents, light proofing agents, flame retardants, thermal stabilizers, antioxidants, and antigelling agents. And surfactants. Moreover, it is also preferable not to contain particle
- “Substantially free of particles” means, for example, in the case of inorganic particles, a content that is 50 ppm or less, preferably 10 ppm or less, particularly preferably the detection limit or less when inorganic elements are quantified by fluorescent X-ray analysis. means.
- the blending of the ultraviolet absorber into the oriented film can be carried out by appropriately selecting a known method.
- a masterbatch is prepared by blending a dried UV absorber and a polymer raw material in advance using a kneading extruder, and blended by a method of mixing the predetermined masterbatch and polymer raw material during film formation. be able to.
- the concentration of the UV absorber in the masterbatch is preferably 5 to 30% by mass in order to uniformly disperse the UV absorber and mix it economically.
- a kneading extruder is used, and the extrusion temperature is preferably from 1 to 15 minutes at a temperature not lower than the melting point of the polyester raw material and not higher than 290 ° C. Above 290 ° C, the weight loss of the UV absorber is large, and the viscosity of the master batch is greatly reduced. When the extrusion temperature is 1 minute or less, uniform mixing of the UV absorber becomes difficult.
- a stabilizer, a color tone adjusting agent, and an antistatic agent may be added.
- the oriented film preferably has a multilayer structure of at least three layers, and an ultraviolet absorber is preferably added to the intermediate layer of the film.
- a film having a three-layer structure containing an ultraviolet absorber in the intermediate layer can be specifically produced as follows. Polyester pellets alone for the outer layer, master batches containing UV absorbers for the intermediate layer and polyester pellets are mixed at a predetermined ratio, dried, and then supplied to a known melt laminating extruder, which is slit-shaped. Extruded into a sheet form from a die and cooled and solidified on a casting roll to make an unstretched film.
- a three-layer manifold or a merging block for example, a merging block having a square merging portion
- a film layer constituting both outer layers and a film layer constituting an intermediate layer are laminated
- An unstretched film is formed by extruding a three-layer sheet from the die and cooling with a casting roll.
- the filter particle size (initial filtration efficiency 95%) of the filter medium used for high-precision filtration of the molten resin is preferably 15 ⁇ m or less. When the filter particle size of the filter medium exceeds 15 ⁇ m, removal of foreign matters of 20 ⁇ m or more tends to be insufficient.
- the oriented film used in the present invention can be subjected to corona treatment, coating treatment, flame treatment, etc. in order to improve the adhesion to the polarizer.
- a polarizer generally known in the technical field can be used without particular limitation.
- a dichroic material such as iodine is used for a polyvinyl alcohol film.
- the polarizer used in the present invention is, for example, dyeing and adsorbing iodine or a dichroic material on a polyvinyl alcohol film, uniaxially stretching in an aqueous boric acid solution, and washing and drying while maintaining the stretched state. Can be obtained by: The stretching ratio of uniaxial stretching is usually about 4 to 8 times.
- Polyvinyl alcohol is suitable as the polyvinyl alcohol film.
- the polarizing axis direction of the polarizer is the stretching direction in the case of uniaxial stretching, and can be simply measured by a crossed Nicol test with another polarizing plate.
- the alignment film which is a polarizer protective film, is attached to the polarizer directly or via an adhesive layer. From the viewpoint of improving the adhesiveness and durability between the alignment film and the polarizer, it is preferable to adhere the alignment film and the polarizer via an adhesive layer.
- the component of the adhesive layer can be appropriately selected in consideration of the resin component constituting the alignment film and the resin component constituting the polarizer, but at least one of polyester resin, polyurethane resin or polyacrylic resin It is preferable to have an easy-adhesion layer containing as a main component.
- the “main component” refers to a component that is 50% by mass or more of the solid components constituting the easy-adhesion layer.
- the coating solution used for forming the easy-adhesion layer of the present invention is preferably an aqueous coating solution containing at least one of water-soluble or water-dispersible copolymerized polyester resin, acrylic resin, and polyurethane resin.
- these coating solutions include water-soluble or water-dispersible co-polymers disclosed in Japanese Patent No. 3567927, Japanese Patent No. 3589232, Japanese Patent No. 3589233, Japanese Patent No. 3900191, and Japanese Patent No. 4150982.
- Examples thereof include a polymerized polyester resin solution, an acrylic resin solution, and a polyurethane resin solution.
- polyvinyl alcohol resin As the main component of the adhesive, in addition to partially saponified polyvinyl alcohol and fully saponified polyvinyl alcohol, carboxyl group-modified polyvinyl alcohol, acetoacetyl group-modified polyvinyl alcohol, methylol group-modified polyvinyl alcohol, amino group-modified A modified polyvinyl alcohol resin such as polyvinyl alcohol may be used.
- the concentration of the polyvinyl alcohol resin in the adhesive is preferably 1 to 10% by mass, and more preferably 2 to 7% by mass.
- the thickness of the adhesive layer is preferably 10 ⁇ m or less, more preferably 5 ⁇ m or less, and even more preferably 3 ⁇ m or less.
- the easy-adhesion layer can be obtained, for example, by applying the coating solution on one or both sides of an unstretched sheet or a uniaxially stretched film, drying at 100 to 150 ° C., and further stretching in the lateral direction.
- the final coating amount of the easy adhesion layer is preferably controlled to 0.05 to 0.20 g / m 2 . If the coating amount is less than 0.05 g / m 2 , the adhesion with the resulting polarizer may be insufficient. On the other hand, when the coating amount exceeds 0.20 g / m 2 , blocking resistance may be lowered.
- the application quantity of the easily bonding layer on both surfaces may be the same or different, and can be independently set within the above range.
- particles to the easy-adhesion layer in order to impart slipperiness. It is preferable to use particles having an average particle size of 2 ⁇ m or less. When the average particle diameter of the particles exceeds 2 ⁇ m, the particles easily fall off from the coating layer.
- the particles to be included in the easy-adhesion layer include titanium oxide, barium sulfate, calcium carbonate, calcium sulfate, silica, alumina, talc, kaolin, clay and the like, or a mixture thereof, and other general inorganic particles.
- Inorganic particles such as calcium phosphate, mica, hectorite, zirconia, tungsten oxide, lithium fluoride, calcium fluoride, etc., and organic polymer systems such as styrene, acrylic, melamine, benzoguanamine, and silicone Particles and the like.
- a known method can be used as a method for applying the coating solution.
- reverse roll coating method gravure coating method, kiss coating method, roll brush method, spray coating method, air knife coating method, wire bar coating method, pipe doctor method etc. can be mentioned, and these methods can be used alone or Can be combined.
- grain can be performed with the following method. Take a picture of the particles with a scanning electron microscope (SEM) and at a magnification such that the size of one smallest particle is 2-5 mm, the maximum diameter of 300-500 particles (between the two most distant points) Distance) is measured, and the average value is taken as the average particle diameter.
- SEM scanning electron microscope
- the polarizing plate of the present invention can be coated with various hard coats for the purpose of preventing reflection of the polarizing plate, suppressing glare, suppressing scratches, and the like.
- the liquid crystal display device of the present invention usually includes at least a backlight light source and a liquid crystal cell disposed between two polarizing plates as constituent elements, and if necessary, a hard coat film, an antiglare film, an antireflection film, and a color filter And various optical function films such as a lens sheet, a diffusion sheet, a diffusion plate, and a light guide plate.
- the liquid crystal display device of the present invention is a liquid crystal display device in which the polarizing plate of the present invention is used as at least one of the polarizing plates.
- the polarizing plate of the present invention is bonded to the polarizer such that both of the alignment axes or the orthogonal axes form an angle of 1 ° or more and less than 45 ° with the polarization axis of the polarizer. Can do.
- the protective film on the viewer side of the polarizer has an angle formed by the orientation axis and the polarization axis or the orthogonal axis of the polarizer. It is preferable to be bonded to the polarizer so as to be 1 ° or more and less than 45 °.
- the alignment film which is a protective film positioned on the backlight side of the polarizer disposed on the viewer side of the liquid crystal cell, is polarized so that the alignment axis or the orthogonal axis is parallel to the polarization axis of the polarizer. It is preferable to adhere to the child.
- the polarization axis of the polarizer and the alignment film alignment is preferably 10 ° or less, more preferably 7 ° or less, further preferably 5 ° or less, and most preferably 0 °.
- the liquid crystal display device of the present invention is preferably compatible with three-dimensional display in which a three-dimensional image is visually recognized through a polarizing filter.
- the liquid crystal display device of the present invention is preferably composed of a liquid crystal cell corresponding to a three-dimensional display system and its control device.
- a method for providing a three-dimensional image is not particularly limited, and examples thereof include a polarizing filter method and an active shutter method. Each of these is a method for visually recognizing a three-dimensional image by wearing special glasses having a polarizing filter.
- the former employs a polarizing filter having an orientation axis orthogonal to the left and right, or dedicated glasses (passive system) consisting of circular polarizing filters with different rotation directions on the left and right, and the latter has a polarizing filter that opens and closes in synchronization with image switching.
- the liquid crystal display device for three-dimensional display that employs the polarizing plate of the present invention is more preferably an active method. In the case of the passive method, the left-eye and right-eye images are simultaneously presented from the liquid crystal display device with two orthogonally polarized lights, and when the polarizing plate of the present invention is used, it is difficult to obtain a sharp stereoscopic image by clear polarization selection. There is.
- the biaxial refractive index anisotropy ( ⁇ Nxy) was determined by the following method. Using two polarizing plates, the orientation axis direction of the orientation film was determined, and a 4 cm ⁇ 2 cm rectangle was cut out so that the orientation axis directions were orthogonal to obtain a measurement sample.
- the biaxial refractive index (Nx, Ny) perpendicular to each other and the refractive index (Nz) in the thickness direction were determined by an Abbe refractometer (NAR-4T, manufactured by Atago Co., Ltd.).
- ) was defined as the refractive index anisotropy ( ⁇ Nxy).
- the thickness d (nm) of the film was measured using an electric micrometer (manufactured by Fine Reef, Millitron 1245D), and the unit was converted to nm.
- Retardation (Re) was determined from the product ( ⁇ Nxy ⁇ d) of refractive index anisotropy ( ⁇ Nxy) and film thickness d (nm).
- ) and ⁇ Nyz (
- the obtained polarizing plate is a white LED (cold cathode tube in the case of film I) made of a light emitting element combining a blue light emitting diode and yttrium / aluminum / garnet yellow phosphor, and a light source (Nichia Chemical, NSPW500CS).
- a liquid crystal display device (having a polarizing plate having two TAC films as a polarizer protective film on the incident light side of the liquid crystal cell) is placed so that the alignment film is positioned on the outgoing light side. That is, the TAC film is on the light source side. And it visually observed through the polarizing filter from the front of the polarizing plate of a liquid crystal display device, and the diagonal (0 degree-90 degree) direction, and the presence or absence of the generation
- A No rainbow spots are observed from any direction.
- ⁇ When observed from an oblique direction, an extremely thin rainbow is observed in part.
- ⁇ When observed from an oblique direction, a clear rainbow is observed.
- the tear strength of each film was measured in accordance with JIS P-8116 using an Elmendorf tear tester manufactured by Toyo Seiki Seisakusho. The tearing direction was performed so as to be parallel to the orientation axis direction of the film. The alignment axis direction was measured with a molecular orientation meter (MOA-6004 type molecular orientation meter, manufactured by Oji Scientific Instruments).
- Each orientation film produced by the method described later is attached to one side of a polarizer composed of PVA and iodine, and a TAC film (Fuji Film Co., Ltd., thickness 80 ⁇ m) is attached to the opposite side.
- a polarizing plate was created by pasting.
- the angle formed by the orientation axis and the polarization axis of the polarizer is 0 °, 1 °, 3 °, 5 °, 7 °, 10 °, 15 °, 20 °, 30 °, or 45 °.
- the angle formed between the orthogonal axis of the alignment film and the polarization axis of the polarizer is 0 °, 1 °, 3 °, 5 °, 7 °, 10 °, 15 °, 20 °, 30 °, or 45 °.
- the orientation axis of the oriented film was measured with a molecular orientation meter (MOA-6004 type molecular orientation meter, manufactured by Oji Scientific Instruments).
- Each of the obtained polarizing plates is a liquid crystal display device (incident liquid crystal cell) using a white LED composed of a light emitting element combining a blue light emitting diode and a yttrium / aluminum / garnet yellow phosphor as a light source (Nichia Chemical, NSPW500CS).
- the alignment film was placed on the viewing light side on the outgoing light side of a polarizing plate having two TAC films as polarizer protective films.
- a commercially available polarizing filter (linear polarizing plate SHLP44 manufactured by Bikan Imaging) was disposed on the liquid crystal display device.
- the polarization axis direction of the polarization filter is parallel to the polarization axis of the polarizer on the viewing side (front state) and perpendicular (lateral state)
- the luminance of light transmitted through the polarization filter was measured.
- RISA-COLOR / ONE-II manufactured by Highland
- the liquid crystal display device created as described above is installed horizontally, and a white image (Nokia monitor test for windows V 1.0 (manufactured by Nokia)) is displayed in the center of the panel with a size of 131 ⁇ 131 mm. displayed.
- the measurement was performed by setting the distance between the CCD camera and the display to 1 m in a vertical state.
- the brightness was obtained by dividing the white image into 25 of 5 ⁇ 5, measuring the brightness of all the pixels of the 9 ⁇ 3 ⁇ 3 at the center, and displaying the average value.
- the measured brightness was evaluated according to the following.
- (Front brightness) The brightness in the front state (the brightness when parallel) is the retention ratio of the brightness at each inclination compared to the brightness when the orientation axis of the orientation film is 0 ° (ie, parallel) with respect to the polarization axis of the polarizer.
- Retention rate (luminance at each inclination) / (luminance at 0 °) ⁇ 100
- Retention rate is 90% or more.
- ⁇ Retention rate is 80% or more and less than 90%.
- ⁇ Retention rate is 58% or more and less than 80%.
- X Retention rate is less than 58%.
- the luminance in the horizontal state (brightness in the orthogonal direction) is the rate of increase in luminance at each inclination compared to the luminance when the inclination of the alignment axis of the alignment film is 0 ° (ie parallel) with respect to the polarization axis of the polarizer.
- the results were evaluated according to the following formula, and the results were evaluated in the following four stages.
- Increasing rate (brightness in the horizontal state at each inclination ⁇ brightness in the horizontal state at 0 °) / (brightness in the front state at 0 °) ⁇ 100
- the rate of increase is 3% or more.
- ⁇ The increase rate is 1% or more and less than 3%.
- ⁇ The rate of increase is 0.1% or more and less than 1%.
- ⁇ 0% increase rate (Comprehensive evaluation) The evaluation about the brightness
- the obtained polyethylene terephthalate resin (A) had an intrinsic viscosity of 0.62 dl / g and contained substantially no inert particles and internally precipitated particles. (Hereafter, abbreviated as PET (A).)
- PET (B) 10 parts by weight of a dried UV absorber (2,2 ′-(1,4-phenylene) bis (4H-3,1-benzoxazinon-4-one), PET (A) containing no particles (inherent viscosity Was 0.62 dl / g) and 90 parts by mass were mixed, and a polyethylene terephthalate resin (B) containing an ultraviolet absorber was obtained using a kneading extruder (hereinafter abbreviated as PET (B)).
- a transesterification reaction and a polycondensation reaction were carried out by a conventional method, and as a dicarboxylic acid component (based on the total dicarboxylic acid component) 46 mol% terephthalic acid, 46 mol% isophthalic acid and 8 mol% sodium 5-sulfonatoisophthalate, A water-dispersible sulfonic acid metal base-containing copolymer polyester resin having a composition of 50 mol% ethylene glycol and 50 mol% neopentyl glycol as a glycol component (based on the entire glycol component) was prepared.
- the unstretched film on which this coating layer was formed was guided to a tenter stretching machine, guided to a hot air zone at a temperature of 125 ° C. while being gripped by a clip, and stretched 4.0 times in the width direction.
- the film was treated at a temperature of 225 ° C. for 30 seconds, and further subjected to a relaxation treatment of 3% in the width direction to obtain a uniaxially oriented PET film A having a film thickness of about 50 ⁇ m. .
- the unstretched film is heated to 105 ° C. using a heated roll group and an infrared heater, and then stretched 1.5 times in the running direction by a roll group having a difference in peripheral speed, and then the width is obtained in the same manner as film A.
- a biaxially oriented PET film C having a film thickness of about 50 ⁇ m was obtained in the same manner as the film A except that the film was stretched 4.0 times in the direction.
- Table 1 shows the characteristics of the obtained film and the results of rainbow spot observation.
- Tables 2 and 3 show the results of the screen luminance measured for the polarizing plates prepared using the films A to H and J to M. From the results shown in Table 2, when the inclination of the orientation axis with respect to the polarization axis of the polarizer is 45 °, the luminance is comparable in both the front state and the horizontal state, but compared with the case where the luminance in the front state is 0 °. As a result, it has been found that it is about half, and is not suitable for a three-dimensional display-compatible liquid crystal display device that requires particularly high luminance. Further, from the results in Table 3, it was confirmed that the same results were obtained in relation to the inclination of the orthogonal axis with respect to the polarization axis of the polarizer.
- the polarizing plate, the liquid crystal display device, and the polarizer protective film of the present invention it becomes possible to obtain a three-dimensional display-compatible liquid crystal display device that is excellent in the visibility of a three-dimensional image through a polarizing filter.
- the availability of is very high.
Abstract
Description
(1)偏光子の両側に偏光子保護フィルムを有する偏光板であって、前記偏光子保護フィルムの少なくとも1つが配向フィルムであり、前記偏光子の偏光軸に対する前記配向フィルムの配向軸又は配向軸と直行する軸の傾きが1°以上45°未満である、偏光板。
(2)前記配向フィルムがポリエステル樹脂もしくはポリカーボネート樹脂から形成される、前記偏光板。
(3)前記配向フィルムのリタデーションが3000~30000nmである、前記偏光板。
(4)前記配向フィルムのリタデーションと厚さ方向のリタデーションの比(Re/Rth)が0.2~1.2である、前記偏光板。
(5)前記配向フィルムが少なくとも3層からなり、最外層以外の層に紫外線吸収剤を含有し、380nmの光線透過率が20%以下である、前記偏光板。
(6)バックライト光源、2つの偏光板、及び前記2つの偏光板の間に配置された液晶セルを有する液晶表示装置であって、偏光板の少なくとも1つが(1)~(5)のいずれかに記載の偏光板である液晶表示装置。
(7)バックライト光源、2つの偏光板、及び前記2つの偏光板の間に配置された液晶セルを有する液晶表示装置であって、液晶セルの視認側の偏光板が前記偏光板であり、且つ、前記視認側の偏光板が有する偏光子保護フィルムのうち少なくとも視認側の偏光子保護フィルムが前記配向フィルムである、液晶表示装置。
(8)前記バックライト光源が白色発光ダイオードである前記液晶表示装置。
(9)偏光フィルタを介して三次元画像を視認するための前記液晶表示装置。
上記の式において、「本発明の直行時の輝度」とは、本発明の偏光板を視認側の偏光板とする液晶表示装置から射出された光が、当該偏光板の偏光子の偏光軸とその偏光軸とが直行するように配置された偏光フィルタを透過する輝度である(ここで、「その偏光軸」とは偏光フィルタの偏光軸である)。即ち、「直行時の輝度」とは、視認側の偏光板の偏光子の偏光軸と偏光フィルタの偏光軸とが直行するように配置された状態において、当該偏光板から射出した光が、当該偏光フィルタを透過する光の輝度である。
上記の式において、「本発明の平行時の輝度」とは、本発明の偏光板を視認側の偏光板とする液晶表示装置から射出された光が、当該偏光板の偏光子の偏光軸とその偏光軸とが平行するように配置された偏光フィルタを透過する光の輝度である(「その偏光軸」とは、偏光フィルタの偏光軸を意味する)。また、「従来型の平行時の輝度」とは、上記従来型の偏光板を視認側の偏光板とする液晶表示装置から射出された光が、当該偏光板の偏光子の偏光軸とその偏光軸が平行するように配置された偏光フィルタを透過する光の輝度である。
厚み斑(%)=((dmax-dmin)/d)×100
粒子を走査型電子顕微鏡(SEM)で写真を撮り、最も小さい粒子1個の大きさが2~5mmとなるような倍率で、300~500個の粒子の最大径(最も離れた2点間の距離)を測定し、その平均値を平均粒径とする。
リタデーション(Re)とは、フィルム上の直交する二軸の屈折率の異方性(△Nxy=|Nx-Ny|)とフィルム厚みd(nm)との積(△Nxy×d)で定義されるパラメーターであり、光学的等方性、異方性を示す尺度である。二軸の屈折率の異方性(△Nxy)は、以下の方法により求めた。二枚の偏光板を用いて、配向フィルムの配向軸方向を求め、配向軸方向が直交するように4cm×2cmの長方形を切り出し、測定用サンプルとした。このサンプルについて、直交する二軸の屈折率(Nx,Ny)、及び厚さ方向の屈折率(Nz)をアッベ屈折率計(アタゴ社製、NAR-4T)によって求め、前記二軸の屈折率差の絶対値(|Nx-Ny|)を屈折率の異方性(△Nxy)とした。フィルムの厚みd(nm)は電気マイクロメータ(ファインリューフ社製、ミリトロン1245D)を用いて測定し、単位をnmに換算した。屈折率の異方性(△Nxy)とフィルムの厚みd(nm)の積(△Nxy×d)より、リタデーション(Re)を求めた。
厚さ方向リタデーション(Rth)とは、フィルム厚さ方向断面から見たときの2つの複屈折△Nxz(=|Nx-Nz|)及び△Nyz(=|Ny-Nz|)にそれぞれフィルム厚さdを掛けて得られるリタデーションの平均を示すパラメーターである。上記リタデーション(Re)の測定と同様の方法でNx、Ny、Nzとフィルム厚みd(nm)を求め、(△Nxz×d)及び(△Nyz×d)の平均値を算出して厚さ方向リタデーション(Rth)を求めた。
分光光度計(日立製作所製、U-3500型)を用い、空気層を標準として波長300~500nm領域の光線透過率を測定し、波長380nmにおける光線透過率を求めた。
PVAとヨウ素からなる偏光子の片側に後述する方法で作製した配向フィルムを貼り付け、偏光子の他方の側面にTACフィルム(富士フイルム(株)社製、厚み80μm)を貼り付けて偏光板を作成した。当該配向フィルムは、その配向軸と偏光子の偏光軸とがなす角が、約5°になるように偏光子に貼り付けられた。得られた偏光板を、青色発光ダイオードとイットリウム・アルミニウム・ガーネット系黄色蛍光体とを組み合わせた発光素子からなる白色LED(フィルムIの場合は、冷陰極管)を光源(日亜化学、NSPW500CS)とする液晶表示装置(液晶セルの入射光側に2枚のTACフィルムを偏光子保護フィルムとする偏光板を有する)の出射光側に、配向フィルムが出射光側に位置するように設置した。つまり、TACフィルムが光源側である。そして、液晶表示装置の偏光板の正面、及び斜め(0°~90°)方向から偏光フィルタを介して目視観察し、虹斑の発生有無について、以下のように判定した。
○: 斜め方向から観察した時に、一部に極薄い虹斑が観察される。
×: 斜め方向から観察した時に、明確な虹斑が観察される。
東洋精機製作所製エレメンドルフ引裂試験機を用いて、JIS P-8116に従い、各フィルムの引裂き強度を測定した。引裂き方向はフィルムの配向軸方向と平行となるように行った。配向軸方向の測定は分子配向計(王子計測器株式会社製、MOA-6004型分子配向計)で測定した。
PVAとヨウ素からなる偏光子の片側に後述する方法で作製した各配向フィルムを貼り付け、その反対の面にTACフィルム(富士フイルム(株)社製、厚み80μm)を貼り付けて偏光板を作成した。ここで、配向フィルムは、その配向軸と偏光子の偏光軸とがなす角が0°、1°、3°、5°、7°、10°、15°、20°、30°又は45°、或いは配向フィルムの直行軸と偏光子の偏光軸とが成す角度が0°、1°、3°、5°、7°、10°、15°、20°、30°又は45°となるように偏光子に貼り付けられた。配向フィルムの配向軸は分子配向計(王子計測器株式会社製、MOA-6004型分子配向計)で測定した。
(正面状態の輝度)
正面状態の輝度(平行時の輝度)は、偏光子の偏光軸に対する配向フィルムの配向軸の傾きが0°(即ち、平行)である場合の輝度と比較した、各傾きでの輝度の保持率を下記の式に従って求め、その結果について下記の4段階で評価した。
保持率=(各傾きにおける輝度)/(0°における輝度)×100
◎:保持率が90%以上である。
○:保持率が80%以上90%未満である。
△:保持率が58%以上80%未満である。
×:保持率が58%未満である。
横状態の輝度(直行時の輝度)は、偏光子の偏光軸に対する配向フィルムの配向軸の傾きが0°(即ち平行)である場合の輝度と比較した、各傾きでの輝度の上昇率を、下記の式に従って求め、その結果について下記の4段階で評価した。
上昇率=(各傾きにおける横状態での輝度-0°における横状態での輝度)/(0°における正面状態の輝度)×100
◎:上昇率が3%以上である。
○:上昇率が1%以上3%未満である。
△:上昇率が0.1%以上1%未満である。
×:上昇率が0%
(総合評価) 各傾における正面状態の輝度に関する評価と横状態の輝度に関する評価を比較し、低い方の評価をその傾きの総合評価として採用した。
エステル化反応缶を昇温し200℃に到達した時点で、テレフタル酸を86.4質量部およびエチレングリコール64.6質量部を仕込み、撹拌しながら触媒として三酸化アンチモンを0.017質量部、酢酸マグネシウム4水和物を0.064質量部、トリエチルアミン0.16質量部を仕込んだ。ついで、加圧昇温を行いゲージ圧0.34MPa、240℃の条件で加圧エステル化反応を行った後、エステル化反応缶を常圧に戻し、リン酸0.014質量部を添加した。さらに、15分かけて260℃に昇温し、リン酸トリメチル0.012質量部を添加した。次いで15分後に、高圧分散機で分散処理を行い、15分後、得られたエステル化反応生成物を重縮合反応缶に移送し、280℃で減圧下重縮合反応を行った。
乾燥させた紫外線吸収剤(2,2’-(1,4-フェニレン)ビス(4H-3,1-ベンズオキサジノン-4-オン)10質量部、粒子を含有しないPET(A)(固有粘度が0.62dl/g)90質量部を混合し、混練押出機を用い、紫外線吸収剤含有するポリエチレンテレフタレート樹脂(B)を得た。(以後、PET(B)と略す。)
常法によりエステル交換反応および重縮合反応を行って、ジカルボン酸成分として(ジカルボン酸成分全体に対して)テレフタル酸46モル%、イソフタル酸46モル%および5-スルホナトイソフタル酸ナトリウム8モル%、グリコール成分として(グリコール成分全体に対して)エチレングリコール50モル%およびネオペンチルグリコール50モル%の組成の水分散性スルホン酸金属塩基含有共重合ポリエステル樹脂を調製した。次いで、水51.4質量部、イソプロピルアルコール38質量部、n-ブチルセルソルブ5質量部、ノニオン系界面活性剤0.06質量部を混合した後、加熱撹拌し、77℃に達したら、上記水分散性スルホン酸金属塩基含有共重合ポリエステル樹脂5質量部を加え、樹脂の固まりが無くなるまで撹拌し続けた後、樹脂水分散液を常温まで冷却して、固形分濃度5.0質量%の均一な水分散性共重合ポリエステル樹脂液を得た。さらに、凝集体シリカ粒子(富士シリシア(株)社製、サイリシア310)3質量部を水50質量部に分散させた後、上記水分散性共重合ポリエステル樹脂液99.46質量部にサイリシア310の水分散液0.54質量部を加えて、撹拌しながら水20質量部を加えて、接着性改質塗布液を得た。
基材フィルム中間層用原料として粒子を含有しないPET(A)樹脂ペレット90質量部と紫外線吸収剤を含有したPET(B)樹脂ペレット10質量部を135℃で6時間減圧乾燥(1Torr)した後、押出機2(中間層II層用)に供給し、また、PET(A)を常法により乾燥して押出機1(外層I層および外層III用)に供給し、285℃で溶解した。この2種のポリマーを、それぞれステンレス焼結体の濾材(公称濾過精度10μm粒子95%カット)で濾過し、2種3層合流ブロックにて、積層し、口金よりシート状にして押し出した後、静電印加キャスト法を用いて表面温度30℃のキャスティングドラムに巻きつけて冷却固化し、未延伸フィルムを作った。この時、I層、II層、III層の厚さの比は10:80:10となるように各押し出し機の吐出量を調整した。
未延伸フィルムの厚みを変更することにより、フィルムの厚みを約100μmとする以外は、フィルムAと同様にして一軸配向PETフィルムBを得た。
未延伸フィルムを、加熱されたロール群及び赤外線ヒーターを用いて105℃に加熱し、その後周速差のあるロール群で走行方向に1.5倍延伸した後、フィルムAと同様の方法で幅方向に4.0倍延伸した以外はフィルムAと同様にして、フィルム厚み約50μmの二軸配向PETフィルムCを得た。
走行方向に2.0倍、幅方向に4.0倍延伸した以外はフィルムCと同様にして、フィルム厚み約50μmの二軸配向PETフィルムDを得た。
走行方向に3.3倍、幅方向に4.0倍延伸した以外はフィルムEと同様にして、フィルム厚み約75μmの二軸配向PETフィルムEを得た。
中間層に紫外線吸収剤を含有するPET樹脂(B)を用いなかった以外はフィルムAと同様にして、フィルム厚み50μmの一軸配向PETフィルムを得た。
走行方向に3.6倍、幅方向に4.0倍延伸した以外はフィルムCと同様にして、フィルム厚み約38μmの二軸配向PETフィルムGを得た。
未延伸フィルムの厚みを変更した以外はフィルムAと同様にして、厚み約10μmの一軸配向PETフィルムHを得た。
フィルム自体は、フィルムAと同一であるが、光源を白色発光ダイオードではなく、冷陰極管として虹斑を評価した。
ホスゲンとビスフェノールAから製造したポリカーボネート樹脂を常法により押出機にそれぞれ供給し、290℃で溶解した。これをステンレス焼結体の濾材(公称濾過精度10μm粒子95%カット)で濾過し、口金よりシート状にして押し出した後、静電印加キャスト法を用いて表面温度30℃のキャスティングドラムに巻きつけて冷却固化し、未延伸フィルムを作った。次いでフィルムAと同様の方法で、塗布層を形成した後、未延伸フィルムをテンター延伸機に導き、フィルムの端部をクリップで把持しながら、温度155℃の熱風ゾーンに導き、幅方向に4.0倍に延伸した。次に、フィルムAと同様の方法で熱固定、弛緩処理を行い、フィルム厚み約70μmの一軸配向ポリカーボネートフィルムを得た。
走行方向に3.6倍、幅方向に4.0倍延伸した以外はフィルムCと同様にして、フィルム厚み約188μmの二軸配向PETフィルムKを得た。
走行方向に4.0倍、幅方向に1.0倍延伸した以外はフィルムCと同様にして、フィルム厚み約100μmの一軸配向PETフィルムKを得た。
走行方向の延伸倍率を3.6倍に延伸した以外はフィルムLと同様の方法で一軸配向PETフィルムMを得た。
Claims (9)
- 偏光子の両側に偏光子保護フィルムを有する偏光板であって、
前記偏光子保護フィルムの少なくとも1つが配向フィルムであり、
前記偏光子の偏光軸に対する、前記配向フィルムの配向軸又は配向軸と直行する軸の傾きが、1°以上45°未満である、偏光板。 - 前記配向フィルムがポリエステル樹脂もしくはポリカーボネート樹脂から形成される、請求項1に記載の偏光板。
- 前記配向フィルムのリタデーションが3000~30000nmである、請求項1または2に記載の偏光板。
- 前記配向フィルムのリタデーションと厚さ方向のリタデーションの比(Re/Rth)が0.2~1.2である、請求項1~3のいずれかに記載の偏光板。
- 前記配向フィルムが少なくとも3層からなり、
最外層以外の層に紫外線吸収剤を含有し、
380nmの光線透過率が20%以下である、請求項1~4のいずれかに記載の偏光板。 - バックライト光源、2つの偏光板、及び前記2つの偏光板の間に配置された液晶セルを有する液晶表示装置であって、
偏光板の少なくとも1つが請求項1~5のいずれかに記載の偏光板である液晶表示装置。 - バックライト光源、2つの偏光板、及び前記2つの偏光板の間に配置された液晶セルを有する液晶表示装置であって、
液晶セルの視認側の偏光板が請求項1~5のいずれかに記載の偏光板であり、且つ、前記視認側の偏光板が有する偏光子保護フィルムのうち、少なくとも視認側の偏光子保護フィルムが、前記配向フィルムである液晶表示装置。 - 前記バックライト光源が白色発光ダイオードである請求項6または7に記載の液晶表示装置。
- 偏光フィルタを介して三次元画像を視認するための請求項6~8のいずれかに記載の液晶表示装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020137032406A KR101833582B1 (ko) | 2011-05-18 | 2012-05-16 | 3차원 화상표시 대응 액정표시장치에 적합한 편광판 및 액정표시장치 |
JP2012524431A JP6180113B2 (ja) | 2011-05-18 | 2012-05-16 | 三次元画像表示対応液晶表示装置に適した偏光板及び液晶表示装置 |
US14/118,115 US10175494B2 (en) | 2011-05-18 | 2012-05-16 | Polarizing plate suitable for liquid crystal display device capable of displaying three-dimensional images, and liquid crystal display device |
CN201280024097.9A CN103649791B (zh) | 2011-05-18 | 2012-05-16 | 适用于三维图像显示应对液晶显示装置的偏光板和液晶显示装置 |
EP12786442.9A EP2711748A4 (en) | 2011-05-18 | 2012-05-16 | POLARIZING PLATE FOR A LIQUID CRYSTAL DISPLAY DEVICE FOR DISPLAYING THREE-DIMENSIONAL IMAGES AND A LIQUID CRYSTAL DISPLAY DEVICE |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011111023 | 2011-05-18 | ||
JP2011-111023 | 2011-05-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012157662A1 true WO2012157662A1 (ja) | 2012-11-22 |
Family
ID=47176979
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2012/062476 WO2012157662A1 (ja) | 2011-05-18 | 2012-05-16 | 三次元画像表示対応液晶表示装置に適した偏光板及び液晶表示装置 |
Country Status (7)
Country | Link |
---|---|
US (1) | US10175494B2 (ja) |
EP (1) | EP2711748A4 (ja) |
JP (2) | JP6180113B2 (ja) |
KR (1) | KR101833582B1 (ja) |
CN (1) | CN103649791B (ja) |
TW (1) | TWI551919B (ja) |
WO (1) | WO2012157662A1 (ja) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014157231A (ja) * | 2013-02-15 | 2014-08-28 | Toyobo Co Ltd | 画像表示装置 |
JP2014224894A (ja) * | 2013-05-16 | 2014-12-04 | 東洋紡株式会社 | 画像表示装置 |
JP2014225122A (ja) * | 2013-05-16 | 2014-12-04 | 東洋紡株式会社 | タッチパネル用電極フィルム、それを用いたタッチパネル及び画像表示装置 |
JP2015068847A (ja) * | 2013-09-26 | 2015-04-13 | 大日本印刷株式会社 | 偏光板、画像表示装置、および画像表示装置における明所コントラストの改善方法 |
JP2015096928A (ja) * | 2013-11-16 | 2015-05-21 | 三菱樹脂株式会社 | 偏光板保護用ポリエステルフィルム |
CN105143967A (zh) * | 2013-04-19 | 2015-12-09 | 东洋纺株式会社 | 液晶显示装置、偏光板和偏振片保护膜 |
JPWO2014157557A1 (ja) * | 2013-03-29 | 2017-02-16 | 富士フイルム株式会社 | 画像表示装置 |
JP2017062500A (ja) * | 2016-12-06 | 2017-03-30 | 大日本印刷株式会社 | 偏光板、偏光板の製造方法、画像表示装置、画像表示装置の製造方法及び偏光板の光透過率改善方法 |
US9798189B2 (en) | 2010-06-22 | 2017-10-24 | Toyobo Co., Ltd. | Liquid crystal display device, polarizer and protective film |
JP2017199019A (ja) * | 2017-06-29 | 2017-11-02 | 東洋紡株式会社 | 画像表示装置 |
JP2018041081A (ja) * | 2017-09-04 | 2018-03-15 | 大日本印刷株式会社 | 偏光板、画像表示装置、および画像表示装置における明所コントラストの改善方法 |
JP2018063432A (ja) * | 2017-11-10 | 2018-04-19 | 東洋紡株式会社 | 偏光板及びこれを用いた液晶表示装置 |
JP2018077529A (ja) * | 2018-01-22 | 2018-05-17 | 大日本印刷株式会社 | 偏光板、偏光板の製造方法、画像表示装置、画像表示装置の製造方法及び偏光板の光透過率改善方法 |
US10054816B2 (en) | 2009-11-12 | 2018-08-21 | Toyo Boseki Kabushiki Kaisha | Method for improving visibility of liquid crystal display device, and liquid crystal display device using same |
US10175494B2 (en) | 2011-05-18 | 2019-01-08 | Toyobo Co., Ltd. | Polarizing plate suitable for liquid crystal display device capable of displaying three-dimensional images, and liquid crystal display device |
US10180597B2 (en) | 2011-05-18 | 2019-01-15 | Toyobo Co., Ltd. | Liquid crystal display device, polarizing plate, and polarizer protection film |
US10353246B2 (en) | 2011-09-30 | 2019-07-16 | Dai Nippon Printing Co., Ltd. | Liquid crystal display device and polarizer protective film |
JP2021105718A (ja) * | 2019-03-19 | 2021-07-26 | 東洋紡株式会社 | 画像表示装置 |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101337005B1 (ko) * | 2013-03-29 | 2013-12-04 | 제일모직주식회사 | 편광판용 보호필름, 이를 포함하는 편광판 및 이를 포함하는 액정표시장치 |
JP6169530B2 (ja) * | 2014-05-13 | 2017-07-26 | 富士フイルム株式会社 | 液晶表示装置 |
KR101659161B1 (ko) * | 2014-09-03 | 2016-09-23 | 삼성에스디아이 주식회사 | 편광판 및 이를 포함하는 액정표시장치 |
CN111417881B (zh) * | 2017-11-30 | 2022-06-28 | 3M创新有限公司 | 延迟器 |
JP6863530B2 (ja) * | 2018-09-28 | 2021-04-21 | 東洋紡株式会社 | 指紋認証センサー付き画像表示装置 |
WO2020162120A1 (ja) * | 2019-02-08 | 2020-08-13 | 東洋紡株式会社 | 折りたたみ型ディスプレイ及び携帯端末機器 |
US20220085307A1 (en) * | 2019-02-08 | 2022-03-17 | Toyobo Co., Ltd. | Polyester film and use thereof |
CN113874212B (zh) | 2019-05-28 | 2023-10-24 | 东洋纺株式会社 | 层叠薄膜及其用途 |
JPWO2020241280A1 (ja) | 2019-05-28 | 2020-12-03 | ||
CN113924331A (zh) | 2019-05-28 | 2022-01-11 | 东洋纺株式会社 | 聚酯薄膜、层叠薄膜及其用途 |
CN112162430A (zh) * | 2020-09-04 | 2021-01-01 | 中国科学技术大学 | 实现非线偏振出射光的液晶显示装置 |
WO2024070641A1 (ja) * | 2022-09-29 | 2024-04-04 | 富士フイルム株式会社 | 光学フィルム、偏光板、配向膜形成用組成物、偏光板の製造方法 |
Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06258634A (ja) * | 1993-03-04 | 1994-09-16 | Rohm Co Ltd | 液晶表示デバイス |
JP2004205773A (ja) | 2002-12-25 | 2004-07-22 | Konica Minolta Holdings Inc | 偏光板、その製造方法及びこれを用いた液晶表示装置 |
JP3567927B2 (ja) | 2002-06-04 | 2004-09-22 | 東洋紡績株式会社 | 易接着ポリエステルフィルムロール |
JP3589233B2 (ja) | 2002-06-04 | 2004-11-17 | 東洋紡績株式会社 | 二軸延伸被覆ポリエステルフィルムロール |
JP3589232B2 (ja) | 2002-06-04 | 2004-11-17 | 東洋紡績株式会社 | 二軸延伸被覆ポリエステルフィルムロール |
WO2005050269A1 (ja) * | 2003-11-20 | 2005-06-02 | Sharp Kabushiki Kaisha | 円偏光板、垂直配向型の液晶表示パネルおよびこれらの製造方法 |
JP2005157082A (ja) * | 2003-11-27 | 2005-06-16 | Stanley Electric Co Ltd | 表示装置 |
JP2005266464A (ja) | 2004-03-19 | 2005-09-29 | Teijin Ltd | 偏光子保護フィルム、偏光板および液晶表示素子 |
JP3900191B2 (ja) | 2004-11-29 | 2007-04-04 | 東洋紡績株式会社 | 積層熱可塑性樹脂フィルムおよび積層熱可塑性樹脂フィルムロール |
JP2008003425A (ja) * | 2006-06-23 | 2008-01-10 | Nippon Zeon Co Ltd | 偏光板 |
JP4150982B2 (ja) | 2006-10-31 | 2008-09-17 | 東洋紡績株式会社 | 積層フィルム及びそれを得るための接着性改質基材フィルム |
JP2009157348A (ja) * | 2007-12-04 | 2009-07-16 | Sumitomo Chemical Co Ltd | 偏光板およびそれを用いた液晶表示装置 |
JP2010277028A (ja) | 2009-06-01 | 2010-12-09 | Teijin Dupont Films Japan Ltd | 偏光子支持基材用一軸配向芳香族ポリエステルフィルム |
JP2011107198A (ja) * | 2009-11-12 | 2011-06-02 | Keio Gijuku | 液晶表示装置の視認性改善方法、及びそれを用いた液晶表示装置 |
Family Cites Families (309)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1024293A (en) | 1972-08-28 | 1978-01-10 | E.I. Du Pont De Nemours And Company | Polymeric film, laminated structures including such polymeric film and articles made from such laminated structures |
JPS5166163U (ja) | 1974-11-14 | 1976-05-25 | ||
JPS5210100A (en) | 1975-07-14 | 1977-01-26 | Seikosha Co Ltd | Liquid crystal display apparatus |
JPS54139921A (en) | 1978-04-24 | 1979-10-30 | Mitsubishi Monsanto Chem | Preliminary pressureebonding heating method for laminated glass |
JPS5633611A (en) | 1979-08-28 | 1981-04-04 | Mitsubishi Electric Corp | Polarizing plate |
JPS5898709A (ja) | 1981-12-08 | 1983-06-11 | Nitto Electric Ind Co Ltd | 偏光板 |
JPS58143305A (ja) | 1982-02-22 | 1983-08-25 | Hitachi Ltd | 表示パネル |
JPS5977401A (ja) * | 1982-09-22 | 1984-05-02 | Nitto Electric Ind Co Ltd | 偏光板 |
JPS6026304A (ja) | 1983-07-22 | 1985-02-09 | Nitto Electric Ind Co Ltd | 偏光板 |
JPS6097323A (ja) | 1983-11-01 | 1985-05-31 | Toray Ind Inc | 液晶表示用ポリエステルフイルムおよびその製造方法 |
JPS60133402U (ja) | 1984-02-14 | 1985-09-05 | 筒中プラスチック工業株式会社 | 粘着剤付き積層型偏光板 |
JPS62135338A (ja) | 1985-12-09 | 1987-06-18 | Diafoil Co Ltd | 液晶パネル基板用ポリエチレンナフタレ−ト一軸高配向フイルム |
JPS63226603A (ja) | 1987-03-16 | 1988-09-21 | Nitto Electric Ind Co Ltd | 偏光板素材 |
JPS63307403A (ja) | 1987-06-09 | 1988-12-15 | Diafoil Co Ltd | ポリエチレンナフタレ−トを用いた偏光フィルム |
JPH03125302U (ja) | 1990-03-30 | 1991-12-18 | ||
DE4010563A1 (de) | 1990-04-02 | 1991-10-10 | Basf Ag | Copolymerisate auf basis von c(pfeil abwaerts)1(pfeil abwaerts)-c(pfeil abwaerts)8(pfeil abwaerts)-alkylacrylaten und/oder -methacrylaten |
JPH04163138A (ja) | 1990-10-26 | 1992-06-08 | Diafoil Co Ltd | 安全ガラス用積層体 |
JP3218049B2 (ja) | 1991-02-08 | 2001-10-15 | 鐘淵化学工業株式会社 | 複屈折性を有する透明フィルムの製造方法 |
JP3297450B2 (ja) | 1991-07-22 | 2002-07-02 | 日本ゼオン株式会社 | 液晶ディスプレイ用偏光フィルム |
US5677024A (en) | 1993-07-19 | 1997-10-14 | Teijin Limited | Laminate having improved polarization characteristics and release film used therefor |
JPH08271733A (ja) | 1995-04-03 | 1996-10-18 | Fujimori Kogyo Kk | 前面側偏光板の前面側保護シート、その製造法、および該前面側保護シートの偏光素膜側への貼着方法 |
JPH08271734A (ja) | 1995-04-03 | 1996-10-18 | Fujimori Kogyo Kk | 前面側偏光板の前面側保護シート、および該前面側保護シートの偏光素膜側への貼着方法 |
JPH0933722A (ja) | 1995-07-14 | 1997-02-07 | Fuji Photo Film Co Ltd | 偏光板及び液晶表示装置 |
JPH09166711A (ja) | 1995-12-15 | 1997-06-24 | Konica Corp | 偏光板用保護フィルム及び偏光板 |
US6025433A (en) | 1995-12-20 | 2000-02-15 | Basf Coatings Ag | Thermosetting paint composition |
JP3737564B2 (ja) | 1996-06-04 | 2006-01-18 | 帝人株式会社 | 離型フイルム |
JPH1010558A (ja) | 1996-06-21 | 1998-01-16 | Toyobo Co Ltd | 電極基板 |
JPH1010522A (ja) | 1996-06-24 | 1998-01-16 | Dainippon Printing Co Ltd | 液晶表示装置 |
US6608332B2 (en) | 1996-07-29 | 2003-08-19 | Nichia Kagaku Kogyo Kabushiki Kaisha | Light emitting device and display |
JP2927279B2 (ja) | 1996-07-29 | 1999-07-28 | 日亜化学工業株式会社 | 発光ダイオード |
TW383508B (en) | 1996-07-29 | 2000-03-01 | Nichia Kagaku Kogyo Kk | Light emitting device and display |
JP3065258B2 (ja) | 1996-09-30 | 2000-07-17 | 日亜化学工業株式会社 | 発光装置及びそれを用いた表示装置 |
JPH10133817A (ja) | 1996-11-01 | 1998-05-22 | Techno Print Kk | ガラスタッチパネル |
JP3360787B2 (ja) | 1996-12-02 | 2002-12-24 | シャープ株式会社 | 立体表示装置 |
JPH10268270A (ja) | 1997-03-24 | 1998-10-09 | Seiko Epson Corp | 曲面表示液晶パネルの製造方法および液晶表示装置の製造方法 |
JP3739537B2 (ja) | 1997-03-26 | 2006-01-25 | 大日本印刷株式会社 | 光学的分析装置用測定チップ |
JP4106749B2 (ja) | 1997-06-25 | 2008-06-25 | 三菱化学ポリエステルフィルム株式会社 | 液晶表示板表面保護フィルム |
US6113811A (en) | 1998-01-13 | 2000-09-05 | 3M Innovative Properties Company | Dichroic polarizing film and optical polarizer containing the film |
CN1192255C (zh) | 1998-07-31 | 2005-03-09 | 美国3M公司 | 可后成形的多层光学薄膜及其成形方法 |
JP3947950B2 (ja) | 1998-09-04 | 2007-07-25 | 東洋紡績株式会社 | 透明導電性フィルム、透明タッチパネルおよび液晶表示素子 |
JP2000082338A (ja) | 1998-09-07 | 2000-03-21 | Toyobo Co Ltd | 透明導電性フィルム、透明タッチパネルおよび液晶表示素子 |
JP2000141530A (ja) | 1998-11-10 | 2000-05-23 | Sekisui Chem Co Ltd | 透明積層体 |
JP2000162419A (ja) | 1998-11-26 | 2000-06-16 | Toyobo Co Ltd | 位相差フィルム |
JP2000206333A (ja) | 1999-01-18 | 2000-07-28 | Okura Ind Co Ltd | 偏光板および楕円偏光板 |
JP2000231450A (ja) | 1999-02-10 | 2000-08-22 | Toyobo Co Ltd | 透明導電性フィルム、タッチパネルおよび液晶表示素子 |
JP2000296595A (ja) | 1999-02-10 | 2000-10-24 | Toyobo Co Ltd | 光学用易接着フィルム及びその製造方法 |
JP2001026762A (ja) | 1999-07-13 | 2001-01-30 | Toyobo Co Ltd | 反応性ホットメルト接着剤及びそれを用いた接着芯地 |
JP2001059907A (ja) | 1999-08-23 | 2001-03-06 | Nitto Denko Corp | 位相差板及びその製造方法 |
EP1212655B1 (en) | 1999-09-16 | 2015-01-07 | Merck Patent GmbH | Optical compensator and liquid crystal display i |
JP2001116926A (ja) | 1999-10-21 | 2001-04-27 | Konica Corp | 偏光板保護フィルム、偏光板保護フィルムの製造方法、及び液晶表示装置 |
AT408657B (de) | 1999-12-23 | 2002-02-25 | Solutia Austria Gmbh | Wässriges überzugsmittel |
JP3907908B2 (ja) | 2000-03-24 | 2007-04-18 | 三井化学株式会社 | 偏光板用保護膜及びそれを用いてなる偏光板 |
JP3994617B2 (ja) | 2000-03-28 | 2007-10-24 | コニカミノルタホールディングス株式会社 | 液晶表示装置 |
JP4441837B2 (ja) | 2000-05-25 | 2010-03-31 | 東洋紡績株式会社 | フォーム印刷用空洞含有ポリエステル系積層フィルム |
CN1180052C (zh) | 2000-06-26 | 2004-12-15 | 中国科学院长春光学精密机械与物理研究所 | 发光二极管用波长变换白光发光材料 |
JP2002071921A (ja) | 2000-08-31 | 2002-03-12 | Toyobo Co Ltd | 面光源用反射フィルム |
JP2002088334A (ja) | 2000-09-11 | 2002-03-27 | Diabond Industry Co Ltd | 生分解性ホットメルト接着剤 |
JP4968993B2 (ja) | 2000-09-28 | 2012-07-04 | ユニチカ株式会社 | ポリエステル樹脂水性分散体およびその製造方法 |
JP4341163B2 (ja) | 2000-10-10 | 2009-10-07 | コニカミノルタホールディングス株式会社 | 偏光板保護フィルム及びそれを用いた偏光板、製造方法、液晶表示装置 |
JP2002116877A (ja) | 2000-10-12 | 2002-04-19 | Citizen Watch Co Ltd | 液晶表示装置 |
JP2002207119A (ja) | 2001-01-05 | 2002-07-26 | Teijin Ltd | 偏光板離形用ポリエステルフィルム |
JP2002231032A (ja) | 2001-02-02 | 2002-08-16 | Stanley Electric Co Ltd | 白色led光源バックライト装置 |
US20040109302A1 (en) | 2001-02-28 | 2004-06-10 | Kenji Yoneda | Method of cultivating plant and illuminator for cultivating plant |
WO2002091487A1 (fr) | 2001-05-02 | 2002-11-14 | Kansai Technology Licensing Organization Co., Ltd. | Appareil emetteur de lumiere |
JP2003121818A (ja) | 2001-10-09 | 2003-04-23 | Teijin Dupont Films Japan Ltd | 液晶表示板用配向ポリエステルフィルム |
JP2003121819A (ja) | 2001-10-09 | 2003-04-23 | Teijin Dupont Films Japan Ltd | 液晶表示板用配向ポリエステルフィルム |
US7038744B2 (en) | 2002-01-09 | 2006-05-02 | Konica Corporation | Polarizing plate having a stretched film on a side thereof and liquid crystal display employing the same |
US7054049B2 (en) | 2002-01-23 | 2006-05-30 | Nitto Denko Corporation | Optical film, laminated polarizing plate, liquid crystal display using the same, and self-light-emitting display using the same |
EP1489139B1 (en) | 2002-03-07 | 2007-06-27 | Toray Industries, Inc. | Polyester film and gas-barrier polyester film |
JP2004005540A (ja) | 2002-04-03 | 2004-01-08 | Nitto Denko Corp | タッチパネル付画像表示装置 |
WO2003100480A1 (fr) | 2002-05-24 | 2003-12-04 | Nitto Denko Corporation | Film optique |
JP4052021B2 (ja) | 2002-06-04 | 2008-02-27 | 帝人デュポンフィルム株式会社 | 配向ポリエステルフィルムおよびそれを用いた積層フィルム |
JP2004170875A (ja) | 2002-11-22 | 2004-06-17 | Toshiba Matsushita Display Technology Co Ltd | 液晶表示装置 |
JP2004189957A (ja) | 2002-12-13 | 2004-07-08 | Konica Minolta Holdings Inc | セルロースエステルフィルム、偏光板、及び液晶表示装置、並びにセルロースエステルフィルム、及び偏光板の製造方法 |
JP4117837B2 (ja) | 2003-01-07 | 2008-07-16 | 日東電工株式会社 | 透明導電性積層体およびタッチパネル |
JP4352705B2 (ja) | 2003-01-14 | 2009-10-28 | コニカミノルタホールディングス株式会社 | 偏光板保護フィルムとそれを用いた偏光板及び液晶表示装置 |
JP2004226591A (ja) | 2003-01-22 | 2004-08-12 | Fuji Photo Film Co Ltd | 液晶表示装置および偏光板 |
JP4374859B2 (ja) | 2003-01-23 | 2009-12-02 | 東レ株式会社 | 偏光膜用支持体フィルムおよび偏光板 |
JP2004237451A (ja) | 2003-02-03 | 2004-08-26 | Teijin Dupont Films Japan Ltd | 偏光板離形用ポリエステルフィルム |
JP4327473B2 (ja) | 2003-02-19 | 2009-09-09 | セイコーインスツル株式会社 | 液晶表示装置 |
JP2005173462A (ja) | 2003-12-15 | 2005-06-30 | Nitto Denko Corp | ガラス割れ防止積層体および液晶表示装置 |
JP4293882B2 (ja) | 2003-03-31 | 2009-07-08 | 日東電工株式会社 | 広帯域コレステリック液晶フィルムの製造方法、円偏光板、直線偏光素子、照明装置および液晶表示装置 |
JP2004361774A (ja) | 2003-06-06 | 2004-12-24 | Sumitomo Chem Co Ltd | フレキシブルディスプレイ |
TWI295303B (en) | 2003-08-21 | 2008-04-01 | Toyo Boseki | Optical-use adhesive polyester film and optical-use laminatede film |
JP4323280B2 (ja) | 2003-10-07 | 2009-09-02 | 住友化学株式会社 | 偏光フィルムの製造方法、偏光板の製造方法および光学積層体の製造方法 |
JP2005148519A (ja) | 2003-11-18 | 2005-06-09 | Konica Minolta Opto Inc | 偏光板及び表示装置 |
JP2005181450A (ja) | 2003-12-16 | 2005-07-07 | Nitto Denko Corp | 複屈折フィルムの製造方法、およびそれを用いた光学フィルムおよび画像表示装置 |
CN1641897A (zh) | 2004-01-14 | 2005-07-20 | 诠兴开发科技股份有限公司 | 白光led的改良方法 |
JP4027898B2 (ja) * | 2004-01-29 | 2007-12-26 | 株式会社有沢製作所 | 偏光透過スクリーン、及び当該偏光透過スクリーンを用いた立体画像表示装置 |
TWI387791B (zh) | 2004-02-26 | 2013-03-01 | Fujifilm Corp | 光學薄膜、光學補償片、偏光板及液晶顯示裝置 |
JP4328243B2 (ja) | 2004-03-16 | 2009-09-09 | 富士フイルム株式会社 | 液晶表示装置 |
JP2005319590A (ja) | 2004-05-06 | 2005-11-17 | Konica Minolta Medical & Graphic Inc | 印刷版材料、印刷版及び印刷方法 |
JP2005321543A (ja) | 2004-05-07 | 2005-11-17 | Sekisui Chem Co Ltd | 光学フィルム |
CN100443933C (zh) | 2004-05-18 | 2008-12-17 | 富士胶片株式会社 | 光学补偿起偏振板、图像显示单元和液晶显示单元 |
JP4756626B2 (ja) | 2004-05-24 | 2011-08-24 | 日東電工株式会社 | 表面保護フィルム付光学フィルムおよび画像表示装置 |
JP2005352068A (ja) | 2004-06-09 | 2005-12-22 | Toshiba Matsushita Display Technology Co Ltd | 液晶表示装置 |
JP2005352404A (ja) | 2004-06-14 | 2005-12-22 | Nitto Denko Corp | 広視野角補償偏光板、液晶パネルおよび液晶表示装置 |
JP2006079067A (ja) | 2004-08-12 | 2006-03-23 | Fuji Photo Film Co Ltd | 反射防止フィルム |
US20070285776A1 (en) | 2004-08-12 | 2007-12-13 | Fujifilm Corporation | Anti-Reflection Film |
US7354150B2 (en) | 2004-08-18 | 2008-04-08 | Insight Equity A.P.X., L.P. | Polarizing plate with melanin |
US20070264447A1 (en) | 2004-08-30 | 2007-11-15 | Teijin Dupont Films Japan Limited | Optical Film Laminated Body |
JP4624817B2 (ja) | 2005-02-02 | 2011-02-02 | 帝人デュポンフィルム株式会社 | 反射性偏光フィルム |
JP4634097B2 (ja) | 2004-08-30 | 2011-02-16 | 帝人デュポンフィルム株式会社 | 光学フィルム積層体およびそれを含む液晶表示装置 |
TWI347454B (en) | 2006-12-28 | 2011-08-21 | Ind Tech Res Inst | Optical film with super low retardation and polarizer plate containing the same |
US7486442B2 (en) | 2004-09-30 | 2009-02-03 | Industrial Technology Research Institute | Polarizer protective film, polarizing plate, and visual display |
JP4429862B2 (ja) | 2004-10-06 | 2010-03-10 | 日東電工株式会社 | ハードコートフィルム、反射防止ハードコートフィルム、光学素子および画像表示装置 |
JP2006133652A (ja) | 2004-11-09 | 2006-05-25 | Fuji Photo Film Co Ltd | 位相差板、偏光板および液晶表示装置 |
WO2006057428A1 (ja) | 2004-11-25 | 2006-06-01 | Teijin Dupont Films Japan Limited | 易接着性ポリエステルフィルムおよびそれを用いた太陽電池裏面保護膜 |
JP2006335853A (ja) | 2005-06-01 | 2006-12-14 | Teijin Dupont Films Japan Ltd | 太陽電池裏面保護膜用易接着性ポリエステルフィルムおよびそれを用いた太陽電池裏面保護膜 |
US7531238B2 (en) | 2004-11-29 | 2009-05-12 | Toyo Boseki Kabushiki Kaisha | Laminated thermoplastic resin film and laminated thermoplastic resin film roll |
JP4491733B2 (ja) | 2005-02-01 | 2010-06-30 | 東洋紡績株式会社 | ハードコートフィルム |
CN102827603A (zh) | 2005-03-04 | 2012-12-19 | 三菱化学株式会社 | 荧光体及其制备方法、和使用该荧光体的发光装置 |
JP2006251294A (ja) | 2005-03-10 | 2006-09-21 | Konica Minolta Opto Inc | 液晶表示装置 |
JP4825988B2 (ja) | 2005-03-25 | 2011-11-30 | コニカミノルタオプト株式会社 | 光学補償フィルムの製造方法 |
JP2006276697A (ja) | 2005-03-30 | 2006-10-12 | Dainippon Printing Co Ltd | 位相差フィルムおよび液晶表示装置 |
JP4907891B2 (ja) | 2005-03-30 | 2012-04-04 | 日東電工株式会社 | 偏光子保護フィルム、偏光板、および画像表示装置 |
WO2006112207A1 (ja) | 2005-03-31 | 2006-10-26 | Nippon Shokubai Co., Ltd. | 偏光子保護フィルム、偏光板、および画像表示装置 |
US7622185B2 (en) | 2005-04-15 | 2009-11-24 | Nitto Denko Corporation | Protective cover sheet comprising a UV-absorbing layer for a polarizer plate and method of making the same |
US7633583B2 (en) | 2005-05-23 | 2009-12-15 | Ran-Hong Raymond Wang | Controlling polarization for liquid crystal displays |
US7763672B2 (en) | 2005-07-01 | 2010-07-27 | Toyo Ink Mfg. Co., Ltd. | Red colored film, red colored composition, color filter and liquid crystal display device |
JP4971703B2 (ja) | 2005-07-04 | 2012-07-11 | 帝人デュポンフィルム株式会社 | 有機elディスプレイ基板用ポリエステルフィルム及びそれからなる有機elディスプレイ基板用ガスバリア性積層ポリエステルフィルム |
JP4679985B2 (ja) | 2005-07-07 | 2011-05-11 | 株式会社 日立ディスプレイズ | 液晶表示装置 |
US7479312B2 (en) | 2005-07-07 | 2009-01-20 | Konica Minolta Opto, Inc. | Retardation film, polarizing plate, and liquid crystal display device |
JP4961697B2 (ja) | 2005-07-29 | 2012-06-27 | 東洋紡績株式会社 | 透明導電性フィルム、透明導電性シートおよびタッチパネル |
JP2007039535A (ja) | 2005-08-02 | 2007-02-15 | Unitika Ltd | 樹脂被覆金属用水性接着剤およびこれを用いてなる樹脂被覆金属 |
TW200712579A (en) * | 2005-08-12 | 2007-04-01 | Dainippon Printing Co Ltd | Protective film for polarizing plate and polarizing plate |
JP2007079533A (ja) | 2005-08-17 | 2007-03-29 | Fujifilm Corp | 光学樹脂フィルム、これを用いた偏光板および液晶表示装置 |
CN100590458C (zh) | 2005-08-17 | 2010-02-17 | 富士胶片株式会社 | 光学树脂膜以及使用该光学树脂膜的偏光膜和液晶显示装置 |
TWI422913B (zh) | 2005-08-26 | 2014-01-11 | Konica Minolta Opto Inc | A thin film and a method for manufacturing the same, and a polarizing plate and a liquid crystal display device using the same |
JPWO2007026591A1 (ja) | 2005-08-30 | 2009-03-05 | コニカミノルタオプト株式会社 | 光学フィルム及びその製造方法、並びにそれを用いた偏光板及び液晶表示装置 |
CN100547811C (zh) | 2005-09-30 | 2009-10-07 | 东丽株式会社 | 太阳能电池组件用密封膜和太阳能电池组件 |
US20090280310A1 (en) * | 2005-10-05 | 2009-11-12 | Teijin Chemicals Ltd | Melt-Extrusion Film and Stretched Film |
JPWO2007066470A1 (ja) * | 2005-12-09 | 2009-05-14 | コニカミノルタオプト株式会社 | 偏光板、偏光板の製造方法及び液晶表示装置 |
US20090303481A1 (en) | 2005-12-20 | 2009-12-10 | Nobuhiko Nakai | Optical component, a front/back identifying method for the optical component, and a front/back identifying device for the optical component |
JP4895000B2 (ja) | 2005-12-25 | 2012-03-14 | 三菱樹脂株式会社 | 偏光板保護フィルム用基材 |
US8197916B2 (en) | 2006-01-31 | 2012-06-12 | Konica Minolta Opto, Inc. | Cellulose ester film, light diffusing film, polarizing plate, and liquid crystal display |
JP2007233114A (ja) | 2006-03-02 | 2007-09-13 | Nippon Zeon Co Ltd | 偏光板および液晶表示装置 |
JP4816183B2 (ja) | 2006-03-24 | 2011-11-16 | 東レ株式会社 | 光学用積層二軸延伸ポリエステルフィルム及びそれを用いたハードコートフィルム |
JP2007279243A (ja) | 2006-04-04 | 2007-10-25 | Fujifilm Corp | 偏光板の製造方法、偏光板、および画像表示装置 |
JP2007279469A (ja) | 2006-04-10 | 2007-10-25 | Konica Minolta Opto Inc | 偏光板及び液晶表示装置 |
WO2007116786A1 (ja) | 2006-04-11 | 2007-10-18 | Konica Minolta Medical & Graphic, Inc. | 平版印刷版材料及び印刷方法 |
JP5609926B2 (ja) | 2006-04-17 | 2014-10-22 | 三菱瓦斯化学株式会社 | 透明導電性フィルム、およびそれを用いた低反射タッチパネル |
JP5554885B2 (ja) | 2006-04-18 | 2014-07-23 | 恵和株式会社 | 液晶表示モジュール |
JP2007304391A (ja) | 2006-05-12 | 2007-11-22 | Toppan Printing Co Ltd | カラーフィルタ及び液晶表示装置 |
WO2008015911A1 (fr) | 2006-07-31 | 2008-02-07 | Konica Minolta Opto, Inc. | Film de protection de plaque polarisante, plaque polarisante et écran à cristaux liquides |
JP2008030370A (ja) | 2006-07-31 | 2008-02-14 | Toyobo Co Ltd | 積層ポリエステルフィルム |
JP5035236B2 (ja) | 2006-08-18 | 2012-09-26 | 大日本印刷株式会社 | プラズマディスプレイ用前面フィルタ、及びプラズマディスプレイ |
TWI440942B (zh) | 2006-09-06 | 2014-06-11 | Fujifilm Corp | 液晶顯示裝置 |
CN1927996B (zh) | 2006-09-08 | 2012-05-09 | 北京宇极科技发展有限公司 | 一种荧光粉材料及其制备方法和白光led电光源 |
JP2008102475A (ja) | 2006-09-21 | 2008-05-01 | Fujifilm Corp | 偏光板及び液晶表示装置 |
JP2008083115A (ja) | 2006-09-26 | 2008-04-10 | Epson Imaging Devices Corp | 液晶装置、電子機器 |
JP5553468B2 (ja) | 2006-10-05 | 2014-07-16 | 日東電工株式会社 | 偏光板および液晶表示装置 |
JP5118326B2 (ja) | 2006-10-13 | 2013-01-16 | 日本ペイント株式会社 | 積層塗膜の形成方法 |
KR20090080041A (ko) | 2006-10-17 | 2009-07-23 | 세이코 인스트루 가부시키가이샤 | 표시 장치 |
JP2008155435A (ja) | 2006-12-22 | 2008-07-10 | Toyobo Co Ltd | 二軸延伸樹脂フィルム |
JP2008163078A (ja) | 2006-12-27 | 2008-07-17 | Stanley Electric Co Ltd | 蛍光体及びそれを用いた発光装置 |
JP5009648B2 (ja) | 2007-02-27 | 2012-08-22 | 三菱樹脂株式会社 | 反射防止フィルム用積層ポリエステルフィルム |
WO2008105247A1 (ja) | 2007-02-28 | 2008-09-04 | Jfe Steel Corporation | 塗装鋼板および該塗装鋼板製のテレビ用パネル |
JP5049033B2 (ja) | 2007-03-08 | 2012-10-17 | 富士フイルム株式会社 | 液晶表示装置 |
JP2008256747A (ja) | 2007-03-30 | 2008-10-23 | Fujifilm Corp | 偏光板用保護フィルム、及びその製造方法、偏光板、並びに液晶表示装置 |
JP2008266392A (ja) | 2007-04-17 | 2008-11-06 | Mitsubishi Plastics Ind Ltd | 反射防止フィルム用積層ポリエステルフィルム |
JP2008281866A (ja) | 2007-05-11 | 2008-11-20 | Sharp Corp | 液晶表示装置 |
JP5261997B2 (ja) | 2007-06-27 | 2013-08-14 | 東洋紡株式会社 | 二軸配向ポリエステルフィルム |
JP4878582B2 (ja) | 2007-07-03 | 2012-02-15 | 富士フイルム株式会社 | 偏光板保護フィルム、並びにそれを用いた偏光板及び液晶表示装置 |
CN101358144B (zh) | 2007-07-31 | 2012-08-08 | 中国石油天然气股份有限公司 | 一种烃裂化碱洗涤操作聚合反应的抑制剂 |
US7898628B2 (en) | 2007-08-29 | 2011-03-01 | Mitsubishi Electric Corporation | Liquid crystal display device |
JP2009109995A (ja) | 2007-10-12 | 2009-05-21 | Sumitomo Chemical Co Ltd | 偏光板およびそれを用いた液晶表示装置 |
KR100991320B1 (ko) | 2007-10-18 | 2010-11-01 | 삼성코닝정밀소재 주식회사 | 표시장치용 필터 및 그 제조 방법 |
JP4976259B2 (ja) | 2007-10-25 | 2012-07-18 | 帝人デュポンフィルム株式会社 | 偏光フィルム製造工程で支持体として用いられる支持体用フィルム |
JP4661946B2 (ja) | 2007-11-22 | 2011-03-30 | 東洋紡績株式会社 | 光学用易接着性ポリエステルフィルム及び光学用積層ポリエステルフィルム |
JP2009157347A (ja) | 2007-12-03 | 2009-07-16 | Sumitomo Chemical Co Ltd | 偏光板のセット、ならびにこれを用いた液晶パネルおよび液晶表示装置 |
TW200931083A (en) | 2007-12-04 | 2009-07-16 | Sumitomo Chemical Co | A polarizer and a liquid crystal display apparatus |
JP2009139526A (ja) | 2007-12-05 | 2009-06-25 | Nitto Denko Corp | 偏光板、及び液晶表示装置 |
JP2009157361A (ja) | 2007-12-06 | 2009-07-16 | Nitto Denko Corp | 偏光板及び画像表示装置 |
JP2009169389A (ja) | 2007-12-18 | 2009-07-30 | Sumitomo Chemical Co Ltd | 偏光板のセット、ならびにこれを用いた液晶パネルおよび液晶表示装置 |
JP2009175685A (ja) | 2007-12-25 | 2009-08-06 | Sumitomo Chemical Co Ltd | 偏光板およびそれを用いた液晶表示装置 |
EP2226351A4 (en) | 2007-12-28 | 2014-03-12 | Mitsubishi Plastics Inc | POLYESTER FILM FOR ANTI-ADHESIVE FILM FOR POLARIZER AND LAYERED PRODUCT HAVING IMPROVED POLARIZATION PROPERTY |
JP5292814B2 (ja) * | 2008-01-08 | 2013-09-18 | 東レ株式会社 | ポリエステル系積層フィルムおよび偏光板 |
JP4831778B2 (ja) | 2008-03-05 | 2011-12-07 | 日東電工株式会社 | タッチパネル |
JP5184944B2 (ja) | 2008-04-01 | 2013-04-17 | 日東電工株式会社 | 偏光解消フィルム、その製造方法、光学フィルムおよび液晶表示装置 |
JP5564760B2 (ja) | 2008-04-30 | 2014-08-06 | 東洋紡株式会社 | 接着性改質基材フィルムおよびハードコートフィルム |
JP2009269301A (ja) | 2008-05-08 | 2009-11-19 | Toyobo Co Ltd | 易接着性ポリエステルフィルム |
JP2009282424A (ja) | 2008-05-26 | 2009-12-03 | Epson Imaging Devices Corp | 液晶表示装置、電子機器、及び偏光体 |
JP5346495B2 (ja) | 2008-05-28 | 2013-11-20 | 帝人株式会社 | 光学的異方性を有する光学用フィルムの製造方法 |
JP2009300611A (ja) | 2008-06-11 | 2009-12-24 | Nitto Denko Corp | 偏光板及び液晶パネル |
JP5262335B2 (ja) | 2008-06-17 | 2013-08-14 | 凸版印刷株式会社 | カラーフィルタ及び液晶表示装置 |
JP5143651B2 (ja) | 2008-07-17 | 2013-02-13 | 日東電工株式会社 | 光学フィルム、偏光板、液晶パネル、液晶表示装置および光学フィルムの製造方法 |
JP2010032718A (ja) | 2008-07-28 | 2010-02-12 | Nitto Denko Corp | 液晶パネル及び液晶表示装置 |
JP2010044200A (ja) | 2008-08-12 | 2010-02-25 | Yoriaki Bando | 液晶ディスプレイ装置と偏光サングラス |
JP5077142B2 (ja) | 2008-08-19 | 2012-11-21 | 東洋紡績株式会社 | 二軸配向積層ポリエステルフィルム |
JP2010054750A (ja) | 2008-08-28 | 2010-03-11 | Nippon Shokubai Co Ltd | 位相差フィルムの製造方法 |
JP2010079287A (ja) | 2008-08-28 | 2010-04-08 | Fujifilm Corp | 液晶表示装置 |
JP5115403B2 (ja) | 2008-08-29 | 2013-01-09 | 住友化学株式会社 | 画像表示装置用保護フィルム、偏光板及び画像表示装置 |
JP5027086B2 (ja) | 2008-09-25 | 2012-09-19 | 株式会社ジャパンディスプレイウェスト | 入力装置および入力機能付き表示装置 |
JP5481992B2 (ja) | 2009-07-23 | 2014-04-23 | 東洋紡株式会社 | 透明導電性フィルム |
WO2010035598A1 (ja) | 2008-09-26 | 2010-04-01 | 東洋紡績株式会社 | 透明導電性フィルム及びタッチパネル |
JP5374998B2 (ja) | 2008-09-26 | 2013-12-25 | 東洋紡株式会社 | 透明導電性フィルムの製造方法 |
JP2010096948A (ja) | 2008-10-16 | 2010-04-30 | Seiko Epson Corp | 光学フィルム、液晶装置の製造方法 |
KR101544842B1 (ko) | 2008-10-30 | 2015-08-18 | 삼성디스플레이 주식회사 | 액정 표시 장치 |
JP4575978B2 (ja) * | 2008-10-31 | 2010-11-04 | 日東電工株式会社 | 液晶表示装置 |
JP2010113054A (ja) | 2008-11-05 | 2010-05-20 | Nippon Shokubai Co Ltd | 偏光板 |
TW201022016A (en) | 2008-12-08 | 2010-06-16 | Extend Optronics Corp | Biaxial oriented polyester film with improved formability and manufacturing method thereof |
JP2010139938A (ja) | 2008-12-15 | 2010-06-24 | Toshiba Mobile Display Co Ltd | タッチパネル及びタッチパネル付き液晶表示装置 |
KR20100078564A (ko) | 2008-12-30 | 2010-07-08 | 동우 화인켐 주식회사 | 박막형 편광판 및 이것이 구비된 액정표시장치 |
WO2010079555A1 (ja) | 2009-01-07 | 2010-07-15 | 三菱樹脂株式会社 | 偏光膜保護用ポリエステルフィルム |
JP2010243630A (ja) * | 2009-04-02 | 2010-10-28 | Mitsubishi Plastics Inc | 偏光板保護用ポリエステルフィルム |
JP5471249B2 (ja) * | 2009-02-06 | 2014-04-16 | 大日本印刷株式会社 | 偏光板保護フィルム、偏光板、および液晶表示装置 |
JP2010224512A (ja) | 2009-02-24 | 2010-10-07 | Sumitomo Chemical Co Ltd | Tnモード液晶パネル |
JP5296575B2 (ja) | 2009-03-06 | 2013-09-25 | 住友化学株式会社 | 光硬化性接着剤組成物、偏光板とその製造法、光学部材及び液晶表示装置 |
JP2010217844A (ja) | 2009-03-19 | 2010-09-30 | Sumitomo Chemical Co Ltd | 偏光板のセット、ならびにこれを用いた液晶パネルおよび液晶表示装置 |
KR20100106838A (ko) | 2009-03-24 | 2010-10-04 | 동우 화인켐 주식회사 | 복합구성 편광판 세트 및 이를 포함하는 면상 스위칭 모드 액정표시장치 |
JP2010224345A (ja) | 2009-03-25 | 2010-10-07 | Nippon Zeon Co Ltd | 偏光板の製造方法 |
JP5532046B2 (ja) * | 2009-03-31 | 2014-06-25 | コニカミノルタ株式会社 | ハードコートフィルムの製造方法及び液晶パネルの製造方法 |
JP5187973B2 (ja) | 2009-04-30 | 2013-04-24 | 日東電工株式会社 | 光学フィルム用粘着剤組成物、光学フィルム用粘着剤層、粘着型光学フィルムおよび画像表示装置 |
JP2010271509A (ja) | 2009-05-21 | 2010-12-02 | Mitsubishi Gas Chemical Co Inc | 光干渉縞緩和性に優れた湾曲面を有する光透過型電磁波シールド材料 |
WO2010134416A1 (ja) | 2009-05-22 | 2010-11-25 | 東洋紡績株式会社 | 光学用易接着性ポリエステルフィルム |
JP2011007830A (ja) | 2009-06-23 | 2011-01-13 | Hitachi Displays Ltd | 表示装置 |
JP5451215B2 (ja) | 2009-06-29 | 2014-03-26 | 帝人デュポンフィルム株式会社 | 偏光子支持基材用フィルム |
JP5451214B2 (ja) | 2009-06-29 | 2014-03-26 | 帝人デュポンフィルム株式会社 | 偏光子支持基材用フィルム |
JP5326878B2 (ja) | 2009-07-01 | 2013-10-30 | 東洋紡株式会社 | レンズシート用ベースフィルム |
KR20110014515A (ko) | 2009-08-05 | 2011-02-11 | 제일모직주식회사 | 편광판 및 이를 구비한 액정 표시 장치 |
JP5519217B2 (ja) | 2009-08-31 | 2014-06-11 | 帝人デュポンフィルム株式会社 | 偏光子支持基材用フィルム |
JP2011081359A (ja) | 2009-09-09 | 2011-04-21 | Nitto Denko Corp | 偏光板の製造方法 |
JP5811431B2 (ja) * | 2009-09-11 | 2015-11-11 | 住友化学株式会社 | 偏光板および液晶表示装置 |
JP4896190B2 (ja) | 2009-09-17 | 2012-03-14 | 日立プラズマディスプレイ株式会社 | プラズマディスプレイ装置 |
JP5476075B2 (ja) | 2009-09-23 | 2014-04-23 | 三菱樹脂株式会社 | 積層ポリエステルフィルム |
JP5296019B2 (ja) | 2009-09-23 | 2013-09-25 | 三菱樹脂株式会社 | 積層ポリエステルフィルム |
KR101727171B1 (ko) | 2009-09-23 | 2017-04-14 | 미쓰비시 쥬시 가부시끼가이샤 | 적층 폴리에스테르 필름 |
JP4645772B1 (ja) * | 2009-10-09 | 2011-03-09 | ソニー株式会社 | 位相差素子用配向膜およびその製造方法、位相差素子およびその製造方法、表示装置 |
WO2011043131A1 (ja) | 2009-10-09 | 2011-04-14 | 東洋紡績株式会社 | 二軸配向ポリエチレンテレフタレートフィルム |
JP5568808B2 (ja) | 2009-10-20 | 2014-08-13 | 住友化学株式会社 | バックライトを備える液晶表示装置および液晶表示装置用光学部材セット |
JP2011110718A (ja) | 2009-11-24 | 2011-06-09 | Toyobo Co Ltd | 二軸配向ポリエチレンテレフタレートフィルム |
JP5377252B2 (ja) * | 2009-11-27 | 2013-12-25 | 日東電工株式会社 | 画像表示装置 |
CN102159988A (zh) | 2009-12-03 | 2011-08-17 | 夏普株式会社 | 液晶显示装置 |
JP4780245B2 (ja) | 2009-12-07 | 2011-09-28 | 東洋紡績株式会社 | 易接着性熱可塑性樹脂フィルム |
JP5370124B2 (ja) | 2009-12-18 | 2013-12-18 | 東洋紡株式会社 | 成型用ポリエステルフィルムおよび成型用ハードコートフィルム |
JP5428868B2 (ja) | 2010-01-06 | 2014-02-26 | 東洋紡株式会社 | 光学用易接着性ポリエステルフィルム |
JP5568992B2 (ja) | 2010-01-06 | 2014-08-13 | 東洋紡株式会社 | 光学用易接着性ポリエステルフィルム |
JP2011181875A (ja) | 2010-02-05 | 2011-09-15 | Toray Advanced Film Co Ltd | ディスプレイ用フィルター |
JP5604899B2 (ja) | 2010-02-18 | 2014-10-15 | 東洋紡株式会社 | 積層フィルムおよびそれを用いた透明導電性積層フィルム、透明導電性積層シート並びにタッチパネル |
JP5959799B2 (ja) | 2010-02-25 | 2016-08-02 | 住友化学株式会社 | 偏光板の製造方法 |
JP2011186290A (ja) | 2010-03-10 | 2011-09-22 | Toppan Printing Co Ltd | 反射防止フィルムおよびその製造方法 |
JP5751249B2 (ja) | 2010-03-15 | 2015-07-22 | コニカミノルタ株式会社 | ハードコートフィルム、その製造方法、偏光板、及び液晶表示装置 |
JP5648680B2 (ja) | 2010-03-18 | 2015-01-07 | コニカミノルタ株式会社 | セルロースエステルフィルム、その製造方法、それを備えられた偏光板及び液晶表示装置 |
JP2011195692A (ja) | 2010-03-19 | 2011-10-06 | Unitika Ltd | ポリエステル樹脂水性分散体、およびその製造方法、ならびにそれから得られるポリエステル樹脂被膜 |
JP2011215295A (ja) | 2010-03-31 | 2011-10-27 | Fujifilm Corp | 照明用光拡散シートの製造方法 |
JP5896264B2 (ja) | 2010-05-20 | 2016-03-30 | 大日本印刷株式会社 | 面光源装置および表示装置 |
JP5291048B2 (ja) | 2010-05-24 | 2013-09-18 | 日東電工株式会社 | 偏光板 |
JP5640488B2 (ja) | 2010-06-16 | 2014-12-17 | 東洋紡株式会社 | 偏光板離型用二軸延伸ポリエチレンテレフタレートフィルム |
JP4962661B2 (ja) | 2010-06-22 | 2012-06-27 | 東洋紡績株式会社 | 液晶表示装置、偏光板および偏光子保護フィルム |
JP5416869B2 (ja) | 2010-07-23 | 2014-02-12 | 三菱樹脂株式会社 | 積層ポリエステルフィルム |
JP5449071B2 (ja) | 2010-07-23 | 2014-03-19 | 三菱樹脂株式会社 | 積層ポリエステルフィルム |
JP5416870B2 (ja) | 2010-10-25 | 2014-02-12 | 三菱樹脂株式会社 | 積層ポリエステルフィルム |
US20120113671A1 (en) | 2010-08-11 | 2012-05-10 | Sridhar Sadasivan | Quantum dot based lighting |
WO2012026192A1 (ja) | 2010-08-25 | 2012-03-01 | コニカミノルタオプト株式会社 | ハードコートフィルム、偏光板、及び液晶表示装置 |
WO2012033141A1 (ja) | 2010-09-08 | 2012-03-15 | 東洋紡績株式会社 | 太陽電池用ポリエステルフィルム、太陽電池用易接着性ポリエステルフィルム及びそれを用いたフロントシート |
JP2012083744A (ja) | 2010-09-17 | 2012-04-26 | Nitto Denko Corp | 光拡散素子および光拡散素子付偏光板 |
CN103329032B (zh) | 2010-10-13 | 2015-11-25 | 三菱瓦斯化学株式会社 | Tn液晶显示装置的前面板 |
WO2012060419A1 (ja) | 2010-11-02 | 2012-05-10 | 大日本印刷株式会社 | 光学モジュールおよび表示装置 |
JP2012103470A (ja) | 2010-11-10 | 2012-05-31 | Dainippon Printing Co Ltd | 偏光板、液晶表示パネルおよび表示装置 |
JP5740326B2 (ja) | 2011-03-08 | 2015-06-24 | 富士フイルム株式会社 | マトリックス抵抗膜方式のタッチパネル |
JP5867203B2 (ja) | 2011-03-29 | 2016-02-24 | 東レ株式会社 | 多層積層フィルムおよびこれを用いた窓部材、合わせガラス |
JP2012215623A (ja) | 2011-03-31 | 2012-11-08 | Sekisui Chem Co Ltd | 位相差フィルムの製造方法、位相差フィルム、複合偏光板及び偏光板 |
JP5995407B2 (ja) | 2011-04-01 | 2016-09-21 | 山本光学株式会社 | 色ムラを改善した偏光光学物品 |
JP2012220879A (ja) | 2011-04-13 | 2012-11-12 | Toyobo Co Ltd | 偏光子保護用二軸配向ポリエチレンテレフタレートフィルム |
WO2012141147A1 (ja) | 2011-04-13 | 2012-10-18 | シャープ株式会社 | タッチパネルおよびそれを備えた表示装置 |
CN106094091B (zh) | 2011-05-18 | 2019-03-15 | 东洋纺株式会社 | 偏光板和偏振片保护膜 |
TWI551919B (zh) | 2011-05-18 | 2016-10-01 | 東洋紡績股份有限公司 | 液晶顯示裝置 |
JP5797025B2 (ja) | 2011-06-20 | 2015-10-21 | 日東電工株式会社 | 静電容量タッチパネル |
JP5396439B2 (ja) | 2011-07-22 | 2014-01-22 | 学校法人慶應義塾 | 液晶表示装置の視認性改善方法、及びそれを用いた液晶表示装置 |
JP2013029919A (ja) | 2011-07-27 | 2013-02-07 | Nec Casio Mobile Communications Ltd | ガラス飛散防止フィルム |
JP2013054207A (ja) | 2011-09-05 | 2013-03-21 | Mitsubishi Plastics Inc | 偏光板保護用ポリエステルフィルムおよびその製造方法 |
JP5885447B2 (ja) | 2011-09-30 | 2016-03-15 | 大日本印刷株式会社 | 積層体及び偏光板保護フィルム |
JP5281216B1 (ja) | 2011-11-11 | 2013-09-04 | 株式会社カネカ | 透明電極付き基板およびその製造方法、ならびにタッチパネル |
JP2013109116A (ja) | 2011-11-21 | 2013-06-06 | Konica Minolta Advanced Layers Inc | 偏光膜保護フィルムの製造方法、偏光膜保護フィルム、偏光板及びそれを用いた液晶表示装置 |
WO2013080949A1 (ja) | 2011-11-29 | 2013-06-06 | 東洋紡株式会社 | 液晶表示装置、偏光板および偏光子保護フィルム |
TWI507785B (zh) | 2011-12-28 | 2015-11-11 | Toyo Boseki | 液晶顯示裝置 |
JP2014044389A (ja) | 2011-12-28 | 2014-03-13 | Toyobo Co Ltd | 液晶表示装置、偏光板および偏光子保護フィルム |
JP5051328B1 (ja) | 2012-01-27 | 2012-10-17 | 大日本印刷株式会社 | 光学積層体、偏光板及び画像表示装置 |
JP6135134B2 (ja) | 2012-06-04 | 2017-05-31 | 大日本印刷株式会社 | 光学積層体及び画像表示装置 |
JP5708565B2 (ja) | 2012-06-08 | 2015-04-30 | 大日本印刷株式会社 | タッチパネル部材 |
KR101628597B1 (ko) | 2012-06-11 | 2016-06-08 | 후지필름 가부시키가이샤 | 액정 표시 장치 |
JP2014011318A (ja) | 2012-06-29 | 2014-01-20 | Dainippon Printing Co Ltd | 電磁波遮蔽シート及びそれを用いた表示装置 |
JP2014010315A (ja) | 2012-06-29 | 2014-01-20 | Dainippon Printing Co Ltd | タッチパネル用センサーフィルム及びそれを用いた表示装置 |
JP2014010316A (ja) | 2012-06-29 | 2014-01-20 | Dainippon Printing Co Ltd | 画像品位向上用機能フィルム及びそれを用いた表示装置 |
JP6186675B2 (ja) | 2012-07-05 | 2017-08-30 | 日本電気硝子株式会社 | ガラス樹脂積層体 |
JP5737231B2 (ja) | 2012-07-11 | 2015-06-17 | 大日本印刷株式会社 | 液晶表示装置 |
JP6035927B2 (ja) | 2012-07-11 | 2016-11-30 | 大日本印刷株式会社 | 多層透明基材、多層透明基材を用いた積層体、及びそれらを用いた画像表示装置 |
JP6278585B2 (ja) | 2012-07-11 | 2018-02-14 | 大日本印刷株式会社 | 多層透明基材、多層透明基材を用いた積層体、及びそれらを用いた画像表示装置 |
CN108845451B (zh) | 2012-07-30 | 2021-12-10 | 东洋纺株式会社 | 液晶显示装置、偏光板和偏振片保护膜 |
JP6035964B2 (ja) | 2012-08-02 | 2016-11-30 | 東洋紡株式会社 | 液晶表示装置、偏光板及び偏光子保護フィルム |
WO2014042022A1 (ja) | 2012-09-13 | 2014-03-20 | 富士フイルム株式会社 | 画像表示装置 |
KR20140091363A (ko) | 2013-01-11 | 2014-07-21 | 동우 화인켐 주식회사 | 액정표시장치 |
JP5615987B2 (ja) | 2013-02-07 | 2014-10-29 | 日東電工株式会社 | 偏光膜を有する光学積層体 |
JP5370601B1 (ja) | 2013-02-08 | 2013-12-18 | 東洋紡株式会社 | 画像表示装置 |
JP6259443B2 (ja) | 2013-02-28 | 2018-01-10 | Nsマテリアルズ株式会社 | 液晶表示装置 |
KR101337005B1 (ko) | 2013-03-29 | 2013-12-04 | 제일모직주식회사 | 편광판용 보호필름, 이를 포함하는 편광판 및 이를 포함하는 액정표시장치 |
KR102285068B1 (ko) | 2013-04-19 | 2021-08-02 | 도요보 가부시키가이샤 | 액정표시장치, 편광판 및 편광자 보호 필름 |
JP6263860B2 (ja) | 2013-04-25 | 2018-01-24 | 大日本印刷株式会社 | 光学積層体及び画像表示装置の表示品質改善方法 |
JP5990128B2 (ja) | 2013-05-01 | 2016-09-07 | 富士フイルム株式会社 | 液晶表示装置 |
KR20160002902A (ko) | 2013-06-19 | 2016-01-08 | 후지필름 가부시키가이샤 | 폴리에스터 필름, 편광판 및 화상 표시 장치 |
JP6627218B2 (ja) | 2013-06-28 | 2020-01-08 | 東レ株式会社 | 二軸配向ポリエステルフィルム |
JP2015055680A (ja) | 2013-09-10 | 2015-03-23 | 大日本印刷株式会社 | 偏光板、偏光板の製造方法、画像表示装置、画像表示装置の製造方法及び偏光板の光透過率改善方法 |
JP6201665B2 (ja) | 2013-11-13 | 2017-09-27 | 日亜化学工業株式会社 | 画像表示装置の製造方法並びに発光装置及びカラーフィルターの選択方法 |
KR20150076564A (ko) | 2013-12-27 | 2015-07-07 | 제일모직주식회사 | 액정표시장치용 모듈 및 이를 포함하는 액정표시장치 |
JP6303544B2 (ja) | 2014-01-29 | 2018-04-04 | 東洋紡株式会社 | 液晶表示装置及び偏光板 |
JP6169530B2 (ja) | 2014-05-13 | 2017-07-26 | 富士フイルム株式会社 | 液晶表示装置 |
JP6378540B2 (ja) | 2014-05-26 | 2018-08-22 | 富士フイルム株式会社 | ポリエステルフィルム、ポリエステルフィルムの製造方法、偏光板、画像表示装置及び液晶表示装置 |
JP6354410B2 (ja) | 2014-07-15 | 2018-07-11 | 東洋紡株式会社 | 偏光子保護フィルム、偏光板、それを用いた液晶表示装置 |
-
2012
- 2012-05-16 TW TW101117369A patent/TWI551919B/zh active
- 2012-05-16 WO PCT/JP2012/062476 patent/WO2012157662A1/ja active Application Filing
- 2012-05-16 US US14/118,115 patent/US10175494B2/en active Active
- 2012-05-16 EP EP12786442.9A patent/EP2711748A4/en not_active Withdrawn
- 2012-05-16 KR KR1020137032406A patent/KR101833582B1/ko active IP Right Grant
- 2012-05-16 JP JP2012524431A patent/JP6180113B2/ja active Active
- 2012-05-16 CN CN201280024097.9A patent/CN103649791B/zh active Active
-
2017
- 2017-02-27 JP JP2017034893A patent/JP2017134409A/ja active Pending
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06258634A (ja) * | 1993-03-04 | 1994-09-16 | Rohm Co Ltd | 液晶表示デバイス |
JP3567927B2 (ja) | 2002-06-04 | 2004-09-22 | 東洋紡績株式会社 | 易接着ポリエステルフィルムロール |
JP3589233B2 (ja) | 2002-06-04 | 2004-11-17 | 東洋紡績株式会社 | 二軸延伸被覆ポリエステルフィルムロール |
JP3589232B2 (ja) | 2002-06-04 | 2004-11-17 | 東洋紡績株式会社 | 二軸延伸被覆ポリエステルフィルムロール |
JP2004205773A (ja) | 2002-12-25 | 2004-07-22 | Konica Minolta Holdings Inc | 偏光板、その製造方法及びこれを用いた液晶表示装置 |
WO2005050269A1 (ja) * | 2003-11-20 | 2005-06-02 | Sharp Kabushiki Kaisha | 円偏光板、垂直配向型の液晶表示パネルおよびこれらの製造方法 |
JP2005157082A (ja) * | 2003-11-27 | 2005-06-16 | Stanley Electric Co Ltd | 表示装置 |
JP2005266464A (ja) | 2004-03-19 | 2005-09-29 | Teijin Ltd | 偏光子保護フィルム、偏光板および液晶表示素子 |
JP3900191B2 (ja) | 2004-11-29 | 2007-04-04 | 東洋紡績株式会社 | 積層熱可塑性樹脂フィルムおよび積層熱可塑性樹脂フィルムロール |
JP2008003425A (ja) * | 2006-06-23 | 2008-01-10 | Nippon Zeon Co Ltd | 偏光板 |
JP4150982B2 (ja) | 2006-10-31 | 2008-09-17 | 東洋紡績株式会社 | 積層フィルム及びそれを得るための接着性改質基材フィルム |
JP2009157348A (ja) * | 2007-12-04 | 2009-07-16 | Sumitomo Chemical Co Ltd | 偏光板およびそれを用いた液晶表示装置 |
JP2010277028A (ja) | 2009-06-01 | 2010-12-09 | Teijin Dupont Films Japan Ltd | 偏光子支持基材用一軸配向芳香族ポリエステルフィルム |
JP2011107198A (ja) * | 2009-11-12 | 2011-06-02 | Keio Gijuku | 液晶表示装置の視認性改善方法、及びそれを用いた液晶表示装置 |
Non-Patent Citations (2)
Title |
---|
KENJI ISHIKAWA: "3D Stereoscopic Images Are Coming", 25 April 2010, OHMSHA LTD., pages: 62 - 118 |
See also references of EP2711748A4 * |
Cited By (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10948764B2 (en) | 2009-11-12 | 2021-03-16 | Keio University | Method for improving visibility of liquid crystal display device, and liquid crystal display device using the same |
US10054816B2 (en) | 2009-11-12 | 2018-08-21 | Toyo Boseki Kabushiki Kaisha | Method for improving visibility of liquid crystal display device, and liquid crystal display device using same |
US9798189B2 (en) | 2010-06-22 | 2017-10-24 | Toyobo Co., Ltd. | Liquid crystal display device, polarizer and protective film |
US10503016B2 (en) | 2010-06-22 | 2019-12-10 | Toyobo Co., Ltd. | Liquid crystal display device, polarizer and protective film |
US9897857B2 (en) | 2010-06-22 | 2018-02-20 | Toyobo Co., Ltd. | Liquid crystal display device, polarizer and protective film |
US10180597B2 (en) | 2011-05-18 | 2019-01-15 | Toyobo Co., Ltd. | Liquid crystal display device, polarizing plate, and polarizer protection film |
US10175494B2 (en) | 2011-05-18 | 2019-01-08 | Toyobo Co., Ltd. | Polarizing plate suitable for liquid crystal display device capable of displaying three-dimensional images, and liquid crystal display device |
US10921648B2 (en) | 2011-09-30 | 2021-02-16 | Dai Nippon Printing Co., Ltd. | Liquid crystal display device and polarizer protective film |
US10353246B2 (en) | 2011-09-30 | 2019-07-16 | Dai Nippon Printing Co., Ltd. | Liquid crystal display device and polarizer protective film |
JP2014157231A (ja) * | 2013-02-15 | 2014-08-28 | Toyobo Co Ltd | 画像表示装置 |
JPWO2014157557A1 (ja) * | 2013-03-29 | 2017-02-16 | 富士フイルム株式会社 | 画像表示装置 |
KR20150143590A (ko) * | 2013-04-19 | 2015-12-23 | 도요보 가부시키가이샤 | 액정표시장치, 편광판 및 편광자 보호 필름 |
JP2020073951A (ja) * | 2013-04-19 | 2020-05-14 | 東洋紡株式会社 | 液晶表示装置、偏光板及び偏光子保護フィルム |
KR102505572B1 (ko) * | 2013-04-19 | 2023-03-02 | 도요보 가부시키가이샤 | 액정표시장치, 편광판 및 편광자 보호 필름 |
KR20210095974A (ko) * | 2013-04-19 | 2021-08-03 | 도요보 가부시키가이샤 | 액정표시장치, 편광판 및 편광자 보호 필름 |
KR102285068B1 (ko) * | 2013-04-19 | 2021-08-02 | 도요보 가부시키가이샤 | 액정표시장치, 편광판 및 편광자 보호 필름 |
JPWO2014171386A1 (ja) * | 2013-04-19 | 2017-02-23 | 東洋紡株式会社 | 液晶表示装置、偏光板及び偏光子保護フィルム |
CN105143967A (zh) * | 2013-04-19 | 2015-12-09 | 东洋纺株式会社 | 液晶显示装置、偏光板和偏振片保护膜 |
JP2014224894A (ja) * | 2013-05-16 | 2014-12-04 | 東洋紡株式会社 | 画像表示装置 |
JP2014225122A (ja) * | 2013-05-16 | 2014-12-04 | 東洋紡株式会社 | タッチパネル用電極フィルム、それを用いたタッチパネル及び画像表示装置 |
CN104516043A (zh) * | 2013-09-26 | 2015-04-15 | 大日本印刷株式会社 | 偏振片、图像显示装置和图像显示装置的明处对比度的改善方法 |
JP2015068847A (ja) * | 2013-09-26 | 2015-04-13 | 大日本印刷株式会社 | 偏光板、画像表示装置、および画像表示装置における明所コントラストの改善方法 |
JP2015096928A (ja) * | 2013-11-16 | 2015-05-21 | 三菱樹脂株式会社 | 偏光板保護用ポリエステルフィルム |
JP2017062500A (ja) * | 2016-12-06 | 2017-03-30 | 大日本印刷株式会社 | 偏光板、偏光板の製造方法、画像表示装置、画像表示装置の製造方法及び偏光板の光透過率改善方法 |
JP2017199019A (ja) * | 2017-06-29 | 2017-11-02 | 東洋紡株式会社 | 画像表示装置 |
JP2018041081A (ja) * | 2017-09-04 | 2018-03-15 | 大日本印刷株式会社 | 偏光板、画像表示装置、および画像表示装置における明所コントラストの改善方法 |
JP2018063432A (ja) * | 2017-11-10 | 2018-04-19 | 東洋紡株式会社 | 偏光板及びこれを用いた液晶表示装置 |
JP2018077529A (ja) * | 2018-01-22 | 2018-05-17 | 大日本印刷株式会社 | 偏光板、偏光板の製造方法、画像表示装置、画像表示装置の製造方法及び偏光板の光透過率改善方法 |
JP2021105718A (ja) * | 2019-03-19 | 2021-07-26 | 東洋紡株式会社 | 画像表示装置 |
JP7201017B2 (ja) | 2019-03-19 | 2023-01-10 | 東洋紡株式会社 | 画像表示装置 |
Also Published As
Publication number | Publication date |
---|---|
EP2711748A4 (en) | 2014-12-03 |
JPWO2012157662A1 (ja) | 2014-07-31 |
KR20140031935A (ko) | 2014-03-13 |
TW201300893A (zh) | 2013-01-01 |
US10175494B2 (en) | 2019-01-08 |
JP2017134409A (ja) | 2017-08-03 |
US20140104519A1 (en) | 2014-04-17 |
KR101833582B1 (ko) | 2018-02-28 |
CN103649791B (zh) | 2016-03-02 |
JP6180113B2 (ja) | 2017-08-16 |
TWI551919B (zh) | 2016-10-01 |
CN103649791A (zh) | 2014-03-19 |
EP2711748A1 (en) | 2014-03-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6180113B2 (ja) | 三次元画像表示対応液晶表示装置に適した偏光板及び液晶表示装置 | |
US10503016B2 (en) | Liquid crystal display device, polarizer and protective film | |
JP6179548B2 (ja) | 液晶表示装置、偏光板および偏光子保護フィルム | |
JP7396402B2 (ja) | 液晶表示装置、偏光板および偏光子保護フィルム | |
JP7205527B2 (ja) | 液晶表示装置 | |
WO2017010444A1 (ja) | 液晶表示装置及び偏光板 | |
WO2018181655A1 (ja) | 液晶表示装置、偏光板および偏光子保護フィルム | |
JP2018028611A (ja) | 液晶表示装置 | |
JP2018028612A (ja) | 液晶表示装置 | |
JP6521216B2 (ja) | 液晶表示装置及び偏光板 | |
JP2016157117A (ja) | 液晶表示装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ENP | Entry into the national phase |
Ref document number: 2012524431 Country of ref document: JP Kind code of ref document: A |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12786442 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14118115 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20137032406 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2012786442 Country of ref document: EP |