WO2004057381A1 - 透明導電性積層体,タッチパネル及びタッチパネル付液晶表示装置 - Google Patents
透明導電性積層体,タッチパネル及びタッチパネル付液晶表示装置 Download PDFInfo
- Publication number
- WO2004057381A1 WO2004057381A1 PCT/JP2003/016240 JP0316240W WO2004057381A1 WO 2004057381 A1 WO2004057381 A1 WO 2004057381A1 JP 0316240 W JP0316240 W JP 0316240W WO 2004057381 A1 WO2004057381 A1 WO 2004057381A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- transparent conductive
- film
- layer
- conductive laminate
- touch panel
- 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
- 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
- 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
- G02F1/13338—Input devices, e.g. touch panels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/42—Polarizing, birefringent, filtering
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2323/00—Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2323/00—Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
- C09K2323/03—Viewing layer characterised by chemical composition
- C09K2323/035—Ester polymer, e.g. polycarbonate, polyacrylate or polyester
Definitions
- the present invention relates to a transparent conductive laminate.
- the present invention relates to a transparent conductive laminate that can be suitably used for a touch panel and a liquid crystal display device with a touch panel.
- touch panels are of the resistive film type.
- This touch panel of the resistive film type is constructed by making two transparent electrode substrates (a movable electrode substrate and a fixed electrode substrate) on which a transparent conductive layer is formed to face each other at an interval of about 10 to 10 ⁇ . ing.
- a dot spacer is usually provided on the electrode surface of the fixed electrode substrate in order to maintain insulation between the movable electrode substrate and the fixed electrode substrate without external force.
- the electrode surfaces of the movable electrode substrate and the fixed electrode substrate contact each other only at the pressed portion and operate as a switch. Or input of handwritten figures and handwritten characters.
- liquid crystal display device with a touch panel for example, a video camera, a PDA (Personal Digital Assistant), a smartphone and the like are often used as portable devices.
- the liquid crystal display device with a touch panel of these portable information devices is usually used outdoors, so that it can be seen in the presence of light sources coming from various directions. Therefore, noise light (reflected light from the touch panel) as well as light for recognizing the image (for example, light coming from the liquid crystal display) enters the eyes at the same time, making the display difficult to see.
- Japanese Unexamined Patent Publication No. 05-128782 discloses that reflected light is reduced by sequentially laminating a 1Z4 wavelength retardation film, a polarizing plate, and a non-glare-treated transparent film on a touch panel portion.
- a touch panel is described. Although this touch panel has the effect of reducing the reflected light from the touch panel section, it has a problem that the light emitted from the liquid crystal display section is colored by the action of a quarter-wave retardation film.
- WO99 / 663991 discloses a phase difference of 90 to 200 nm and a photoelastic constant of 5 X 10 1 13 cm 2 / dy ne ⁇ 65 X 10- 13 cm 2 / dyn e (5 ⁇ 65 X 10 _12 P a - 1) touch panel using a pair of transparent conductive substrate and the retardation film is disclosed. Further, it is described that a transparent conductive layer provided on a retardation film can be used as a transparent conductive substrate of a touch panel.
- the phase difference film may be damaged in the process of providing the transparent conductive layer and the process of processing into a touch panel. It was found that there was a problem in manufacturing and that the reliability of the adhesiveness when the retardation film was bonded to the polarizing plate was sometimes insufficient. Therefore, on the surface of the retardation film to be bonded to the polarizing plate, a layer having both a function of improving the adhesion to the polarizing plate and a function of preventing scratches in various processing steps was provided. However, it has been clarified that stripe-like red-green spots due to uneven thickness of this layer are conspicuous, which causes a problem that the visibility of the liquid crystal display device is reduced.
- JP-A-5-50561 discloses that one surface of a film is a roughened surface having a center line average roughness (Ra) in the range of 0.05 to 5.0 ⁇ , and Discloses a transparent conductive film (transparent conductive laminate) having a transparent conductive layer formed thereon and a touch panel formed by using the transparent conductive film (transparent conductive laminate) for a lower sheet (fixed electrode substrate). ing.
- a support plate was provided so as to be in contact with the lower sheet to reinforce the touch panel, there was a problem that color unevenness occurred due to light interference between the lower sheet and the support plate, but a roughened surface was formed on the lower sheet. This prevents color spots due to light interference.
- 'A a method of providing a roughened surface
- a method of providing a layer containing inorganic fine particles or organic fine particles is mentioned. This method is effective as a method for eliminating striped red-green spots.
- the center line average roughness of the roughened surface is too large, there is a problem that haze is increased and visibility of the liquid crystal display is impaired.
- a main object of the present invention is to provide a novel transparent conductive laminate which gives a 1/4 phase difference.
- Another object of the present invention is to provide the above-mentioned laminated body which is easy to see especially when used as a touch panel and has improved visibility.
- Still another object of the present invention is to provide a touch panel and a liquid crystal display device with a touch panel using the above-mentioned laminate.
- the first, film photoelastic constant of a polymer is 70 X 10 "12 P a one 1 follows (polymer film A), while A light scattering layer having a haze value in the range of 0.2 to L.4% formed on the surface and a transparent conductive layer formed on the other surface, and as a whole; This is achieved by a transparent conductive laminate that provides a phase difference.
- a touch panel in which the laminate is arranged at a specific position and a liquid crystal display device with a touch panel.
- FIG. 1 is a schematic view of the touch panel manufactured in Example 1 (and Comparative Example 1).
- FIG. 2 is a schematic diagram of the touch panel manufactured in Example 2.
- FIG. 3 is a schematic diagram of a liquid crystal display device with a touch panel manufactured in Example 3 (and Comparative Example 2).
- FIG. 4 is a schematic diagram of a liquid crystal display device with a touch panel manufactured in Example 4. Explanation of reference numerals
- the transparent conductive laminate of the present invention comprises a polymer film (hereinafter, referred to as a polymer film A), a light scattering layer on one surface thereof, and a transparent conductive layer on the other surface. Is done. Then, a phase difference of ⁇ / 4 is given to the entire laminate.
- the polymer film may be composed of a single-layer film, or may be composed of a laminate of two or more films.
- the polymer film A includes a film having a function of giving a phase difference of L / 4 in one layer, that is, an iZ4 retardation film.
- Examples of the polymer film A in the case of a laminate of two or more films include (i) a one-layer film having excellent optical isotropy (eg, a retardation (And) value of 30 nm or less). (Ii) excellent optical isotropy (eg, a retardation (And) value of 30 nm or less) (Iii) one-layer laminated film provided with a one-layer; 1 / 4-phase-difference film and a 1-layer / two-phase-difference film For example, a laminated retardation film composed of a film giving a phase difference of / 4 and a film giving a phase difference of ⁇ 2 in one layer.
- optical isotropy eg, a retardation (And) value of 30 nm or less
- excellent optical isotropy eg, a retardation (And) value of 30 nm or less
- photoelastic constant 70X 10- 12 Pa one 1 consisting of at which a polymer film uniaxially stretched (or sequentially or simultaneously with a twin-screw stretching) that the phase difference or the ⁇ 4 the polymer film itself; and methods for expressing a phase difference of 1/2, polymer photoelastic constant is 7 OX 10_ 12 P a one 1 below
- a layer of a compound for example, a layer made of a polymer liquid crystal
- polymer film A provides a transparent conductive laminate which gives a retardation of / 4 as a whole.
- polymer film A is in contact with a single-layer film having excellent optical isotropy (for example, a retardation (And) value of 30 nm or less) to give a phase difference of 1/4 Either a laminated film provided with a film and a single-layer film giving a retardation of / 2, or a lamination layer composed of a single-layer L / 4 retardation film and a single ⁇ / 2 retardation film It is preferable to use a retardation film because the laminate as a whole has excellent retardation of 4 which is excellent in broadband property.
- FIG. 1 shows an example of a preferred embodiment of the present invention.
- FIG. 1 is a schematic view of a touch panel in Example 1 described later.
- a transparent conductive layer (5) is disposed on one side of a polymer film A (3: LZ4 retardation film) via a cured resin layer (4), and the other side of the polymer film A is provided.
- This polymer film A acts to give a phase difference of LZ4 to the entire transparent conductive laminate P. (14-1).
- a laminate of the polarizing plate (13) and the transparent conductive laminate P (14-1) and the transparent conductive laminate R (15) are arranged with a gap therebetween to form a touch panel. I have.
- the transparent conductive laminate of the present invention further, the polymer film A surface opposite to the transparent conductive layer, the other of photoelastic constant of a polymer is 70X 10- 12 P a- 1 or less (Hereinafter referred to as polymer film B).
- a phase difference of LZ4 may be given as the whole laminate by the action of either the polymer film A or the polymer film B, and the operation of both the polymer film A and the polymer film B may be performed.
- a phase difference of ⁇ / 4 may be given to the entire laminate.
- the in-plane retardation value required for the polymer film ⁇ ⁇ ⁇ differs depending on the relationship with the polymer film B.
- the polymer film A in the above-described embodiment can be used.
- the polymer film B a film having excellent optical isotropy (for example, having a retardation value ( ⁇ nd) of 30 nm or less) that does not hinder the entire operation can be used.
- Such a polymer film B may be preferable when used together with the polymer film A as an electrode substrate of a touch panel, because it serves as a support for increasing the overall strength.
- the polymer film A has excellent optical isotropy (for example, the retardation value ( ⁇ nd) is 30 nm or less), and the polymer film B has a phase of (i) ⁇ / 4.
- the polymer film B has a phase of (i) ⁇ / 4.
- Phase difference or of such 4 the method to obtain a film which gives a 1/2 phase difference
- a film photoelastic constant is a 70X 10- 12 P
- a polymer is one less than one uniaxially stretched (also by sequentially or simultaneously biaxially oriented) can, and methods of expressing the phase difference of the phase difference Matawae / 2 of the polymer film itself sacrifices Z4, in photoelastic constant 70 X 10- 12 P a one 1 below
- a layer of a compound for example, a layer made of a polymer liquid crystal
- a phase difference of 4 or LZ 2 is provided on a polymer film.
- the polymer film B has a force of one layer.
- a laminated retardation film composed of an IZ2 retardation film is excellent in a broadband property as a whole of a laminate;
- a laminate that gives a phase difference of Z4 as a whole by the action of both the polymer film A and the polymer film B either one of the polymer films A or B as described above;
- a film giving a phase difference can be used, and a film giving a phase difference of 1/2 as described above can be used.
- the laminated body as a whole has excellent broadband properties; it is preferable because it gives a phase difference of LZ4.
- FIG. 4 shows an example of a preferred embodiment of the present invention.
- FIG. 4 is a schematic diagram of a liquid crystal display device with a touch panel in Example 4 described later.
- polymer film A (12: optically isotropic film)
- a transparent conductive layer (4), a high refractive index layer (9) and a low refractive index layer (10) are interposed.
- a light scattering layer (2) is provided on the other side of the polymer film A, and a polymer film B ( ⁇ 4 retardation film (1 1) and ⁇ / 2 (A laminated retardation film comprising a retardation film (3)).
- the polymer film as the laminated retardation film acts to give a phase difference of 4 to the entire transparent conductive laminate (17).
- a laminate of the polarizing plate (13) and the transparent conductive laminate (17) and the transparent conductive laminate R (16) are arranged with a gap therebetween to form a touch panel portion. Further, the touch panel section, the liquid crystal cell section (21), and the polarizing plate (22) are laminated to constitute a liquid crystal display device with a touch panel.
- the liquid crystal cell part is a liquid crystal sandwiched between transparent electrode substrates. Images cannot be displayed.
- the combination of the liquid crystal cell, the polarizing plate and the retardation film functions as a liquid crystal display.
- Polymer film A to be used in the present invention which photoelastic constant of the polymer constituting the 70 X 10- 12 P a one 1 or less, preferably 64 X 10- 12 P a one 1 below.
- Conventional photoelastic constant 70 X 1 0_ 12 P a one first polarizer a transparent conductive layer provided transparent electroconductive laminate on a film made of a polymer of more than are configured using with a retardation film Tatsuchipaneru
- discoloration may occur in an arc shape from the bonding part (seal part) toward the inside. In the touch panel using the polymer film A according to the present invention, the occurrence of this discoloration can be considerably suppressed.
- thermoplastic ⁇ for example, aromatic Polycarbonate having a fluorene ring or isophorone ring No. That is, the following formula (I)
- a repeating unit represented in, 70-30 molar% of the total repeating units constituting the polycarbonate, a polycarbonate preferably occupies from 70 to 35 mole 0/0.
- R Rs is each independently at least one group selected from a hydrogen atom, a halogen atom and a hydrocarbon group having 1 to 6 carbon atoms.
- the hydrocarbon group include an alkyl group such as a methyl group and an ethyl group, and an aryl group such as a phenyl group.
- R 9 and R 10 are each independently a hydrogen atom, a halogen atom or an alkyl group having 1 to 3 carbon atoms such as a methyl group.
- More preferred polycarbonate materials include a repeating unit represented by the above formula (I) and the following formula (II)
- repeating unit represented by the above formula (I) based on the sum of the above formulas (I) and (II) accounts for 70 to 30 mol% of the entire repeating unit constituting the polycarbonate.
- Ru R ⁇ is independently at least one group selected from a hydrogen atom, a halogen atom and a hydrocarbon group having 1 to 22 carbon atoms
- Y is each of the following formulas: Group represented by:
- R 19 to R 21 , R 23 and R 24 in Y are each independently a hydrogen atom, a halogen atom, or a hydrocarbon group having 1 to 22 carbon atoms such as an alkyl group or an aryl group.
- 22 and R 25 are each independently a hydrocarbon group having 1 to 20 carbon atoms such as an alkyl group or an aryl group, and
- a ri to Ar 3 are each independently a carbon group such as a phenyl group. There are 6 to 10 aryl groups.
- the polycarbonate has the following formula (I I I)
- R 26 and R 27 are each independently a hydrogen atom or a methyl group. Preferably, both R 26 and R 27 are methyl groups.
- R 28 to R 23 are each independently a hydrogen atom or a methyl group. Preferably it is a hydrogen atom.
- the above polycarbonate is a copolymer, it may be a polymer mixture (blend, blend Polymer). A combination of two or more copolymers may be used, or two or more homopolymers or a homopolymer and a copolymer may be mixed.
- a cyclopolyolefin resin As the polymer having a photoelastic constant of 70 ⁇ 10 12 Pa- 1 (70 ⁇ 10 to 13 cm 2 / dyne) or less, other than the above, for example, a cyclopolyolefin resin can be used.
- the polymer film comprising the cyclopolyolefin resin include “TPX” and “ ⁇ Oj” manufactured by Mitsui Petrochemical Co., Ltd., “ZEONOR” manufactured by Zeon Corporation, and “ARTON” manufactured by JSR. Since the polymer constituting the polymer film A usually has a heating step when producing a transparent conductive laminate or processing the transparent conductive laminate into a touch panel, it is desirable that the polymer has high heat resistance.
- Tg glass transition temperature
- the photoelastic constant force 7 X 10- 12 P a- 1 ( 7X 10 13 cm 2 d yn e) the following: If the ink Roo les fins polymer, T g 135 It is preferably at least ° C. Further, when the photoelastic constant of 30 ⁇ 70 X 10- 12 P a- 1 ( 70 X 10- 13 cm 2 / dyne) thermoplastic resins polycarbonate ⁇ like of, T g is the 170 ° C or higher It is preferred that
- a method for producing the polymer film A for example, a known melt extrusion method, a solution casting method, or the like is used.
- a solvent in the solution casting method for example, when the above polycarbonate is used, methylene chloride, dioxolane and the like are preferable.
- the thickness of the polymer film A is usually 50 to 200 ⁇ , preferably 70 to 150 m.
- the transparent conductive laminate of the present invention is characterized in that the laminate itself gives a phase difference of Z4.
- the laminate of the present invention converts the linearly polarized light into circularly polarized light when, for example, the linearly polarized light that has passed through the polarizing plate passes from one surface of the laminate of the present invention to the other surface. It has the same function as an IZ4 phase difference film.
- the touch panel portion is configured by arranging a laminate of the polarizing plate and the transparent conductive laminate of the present invention and another transparent conductive laminate with an air gap therebetween, the outside light of the touch panel portion can be reduced. Reflection can be reduced.
- the principle of reducing the reflection of external light on the touch panel is as follows.
- the linearly polarized light that has passed through the polarizing plate on the input operation side becomes circularly polarized light when it passes through the quarter-wave retardation film on the movable electrode substrate side, and this is the electrode surface of the movable electrode substrate or the electrode of the fixed electrode substrate.
- it When it is reflected by a surface, it becomes circularly polarized light in the opposite direction.
- the plane of polarization becomes 90 degrees from that at the time of incidence [II], so it is absorbed by the polarizing plate and the reflection of the touch panel is suppressed Is done.
- the liquid crystal display device with a touch panel using the transparent conductive laminate of the present invention is classified into the following two types, and in the present invention, they are called a circularly polarizing plate type and a built-in type, respectively.
- the polarizing plate 1. and the transparent conductive laminate P that gives a phase difference of ⁇ / 4 are sandwiched by a gap.
- the touch panel portion which is configured by arranging another transparent conductive laminate R, a retardation film 2, a polarizing plate 2, a retardation film 3, a liquid crystal cell portion, and a polarizing plate 3 in this order. It is constructed by stacking.
- the liquid crystal display device is composed of the polarizing plate 2, the retardation film 3, the liquid crystal cell part, and the polarizing plate 3.
- the transparent conductive laminate R needs to have a retardation value of 30 ⁇ m or less so as not to affect the polarization.
- the retardation film 2 is an LZ4 retardation film, and the optical axis of the transparent conductive laminate P and the optical axis of the retardation film 2 are orthogonal to each other.
- the light emitted from the polarizing plate 2 passes through two 1/4 wavelength retardation films whose optical axes are orthogonal to each other, so that the phase difference is effectively canceled out and the polarization is input without any change.
- the light reaches the polarizer on the operation side, passes through the polarizer, or is absorbed by the polarizer to perform display. In this way, coloring of light emitted from the polarizing plate 2 can be suppressed.
- the liquid crystal display device with a built-in touch panel includes, in order from the input operation surface side, a laminate of the polarizing plate 1 and the transparent conductive laminate P that provides a phase difference of ⁇ 4, and another transparent member with a gap therebetween.
- the touch panel unit in which the conductive laminate R is arranged, the liquid crystal cell unit, and the polarizing plate 3 are sequentially laminated.
- a liquid crystal display device is composed of the polarizing plate 1, the transparent conductive laminate ⁇ ⁇ ⁇ that provides a phase difference of ⁇ 4, the liquid crystal cell part, and the polarizing plate 3. If the retardation value of the transparent conductive laminate R is 30 nm or less, it does not affect the polarization, so that even if a touch panel is incorporated, there is almost no coloring problem.
- phase difference of Z 4 is ideally given to all wavelengths in the visible light region. This means that a phase difference of 4 is given. However, if the phase difference at a wavelength of 550 nm is 1/4, the phase difference at other wavelengths is somewhat;
- the retardation value (nd) at a wavelength of 550 nm is preferably from 125 to 150 nm, more preferably from 131 to 145 nm. Regardless of whether the retardation value is smaller or larger than this value, the effect of reducing external light reflection S when combined with a polarizing plate is undesirably small.
- the retardation film 2 is preferably an LZ4 retardation film in order to enhance visibility.
- the material constituting the retardation film 2 is not particularly limited, but the difference in retardation value at a wavelength of 550 nm from the transparent conductive laminate P of the present invention is preferably 10 nm or less. If the difference between the retardation values exceeds 1 Onm, the coloring becomes noticeable. Further, if the difference in the wavelength dispersion between the transparent conductive laminate P and the retardation film 2 is large, coloring becomes noticeable. Therefore, it is preferable that the difference in wavelength dispersion between the transparent conductive laminate P and the retardation film 2 is small.
- the wavelength dispersion of the transparent conductive laminate P is R ( 450) / R (550)> 1 and R (650) / R (550) ⁇ 1
- the chromatic dispersion of retardation film 2 is also R (450) / R (550)> 1 and R ( 650) / R (550) ⁇ 1.
- the wavelength dispersion of the transparent conductive laminate P is R (450) / R (550) ⁇ 1 and R (650) / R (550)> 1
- the wavelength dispersion of the retardation film 2 is It is also preferable that R (450) / R (550) ⁇ 1 and R (650) / R (550)> 1.
- an electromagnetic wave preventing function can be imparted.
- a compound layer for example, a polymer liquid crystal layer
- a phase difference is provided on the polymer films A and B in order to control the wavelength dispersion of the phase difference.
- Compounds such as low-molecular liquid crystals may be included in the molecular films A and B ⁇ .
- the polymer film B a film made of the same material as the polymer film A can be used.
- the same film thickness and manufacturing method as those of the polymer film A can be used.
- a light scattering layer is provided on one surface of the high-potato film A.
- the light scattering layer has the function of scattering light Other than that, it sometimes functions as a layer that has a function to improve the adhesion to the polymer film B and the polarizing plate and a function to prevent damage when processing the transparent conductive laminate. There is also.
- the light scattering layer has a single haze value of 0.2 to 1.4%, preferably 0.3 to 1%. The haze value of the light scattering layer alone can be determined as the difference between the haze value before and after the light scattering layer is formed on the polymer film A.
- the haze value of the light-scattering layer alone is less than 0.2, stripe-like red-green spots due to thickness unevenness are conspicuous, and the visibility of the liquid crystal display device is reduced. There is no effect of preventing scratching. Further, when the haze value exceeds 1.4%, the visibility of the liquid crystal display device tends to deteriorate.
- the thickness of the light scattering layer is preferably 1 to 5 ⁇ , more preferably 1 to 4 Atm. This thickness is defined as the average value of film thickness measurement values arbitrarily measured at 10 or more points when irregularities are formed on the surface and are not substantially flat.
- the light scattering layer scatters light inside this layer and at the Z or surface.
- a method of providing a light scattering layer on the surface of the polymer film A for example, a method of laminating a polymer layer containing fine particles, or a method of forming fine irregularities on the surface when laminating a polymer layer containing no fine particles.
- the method of giving is mentioned.
- the former method light scattering occurs inside the light scattering layer by using fine particles having a different refractive index from the polymer. Further, every time a particle having an average particle diameter larger than the film thickness of the polymer layer is used, fine irregularities are formed on the surface, so that light scattering occurs on the surface regardless of the refractive index of the fine particles.
- an embossed hole or the like is brought into contact with the surface of the polymer layer when the polymer layers are laminated to form irregularities.
- the light scattering layer has irregularities except when only light scattering inside the light scattering layer is used, but the center line average roughness (R a) is 0.005 to 0.04 as an index indicating surface properties. It is preferably in the range of ⁇ .
- the polymer layer containing fine particles can be provided on the surface of the polymer film by, for example, a coating method, a spray method, or a laminating method.
- Examples of the fine particles used for forming the polymer layer containing the fine particles by a coating method include silica fine particles, crosslinked acrylic fine particles, crosslinked polystyrene fine particles, and the like.
- the haze value of the light scattering layer can be adjusted by adjusting the particle size of the fine particles, the mixing ratio of the fine particles to the polymer, the thickness of the polymer layer, and the like.
- the polymer examples include a silicon atom-containing polymer using a silicon alkoxide such as methyltriethoxysilane and phenyltriethoxysilane as a monomer, a melamine thermosetting resin such as etherified methylolmelamine, and a phenoxy thermosetting.
- Resin, epoxy resin, epoxy resin Examples thereof include polyfunctional acrylate resins using polyfunctional acrylate monomers such as acrylate, polyester acrylate, urethane acrylate, and epoxy acrylate. These acrylate resins may be thermosetting resins or radiation-curing resins.
- Radiation-curable resin refers to a resin that undergoes polymerization when irradiated with radiation such as ultraviolet rays or electron beams.
- the small monomers of polyfunctional acrylates that are polymerized and cured by irradiation can obtain a polymer layer having a high degree of cross-linking in a relatively short time, so that the load on the production process is small.
- the obtained layer itself has a feature of high strength, and is preferably used.
- polyfunctional acrylate monomer examples include those containing a polyfunctional acrylate component having two or more acryloyl groups in a unit structure.
- a polyfunctional acrylate component having two or more acryloyl groups in a unit structure.
- trimethylolpropane triatarylate trimethylolpropane ethylene oxide modified triatalylate
- trimethylolpropane propylene oxide modified triatalylate isocyanuric acid ethylene oxide modified triacrylate
- pentaerythritol Various acrylate monomers such as tetraacrylate, dipentaerythritol tonolepentaacrylate, dipentaerythritol tonolehexaacrylate, dimethylolone tricyclodecane diacrylate, polyester-modified acrylate, urethane-modified acrylate, epoxy-modified acrylate, etc.
- Multifunctional acrylate oligomers and the like are preferably used for this purpose. These resins may be used in a single composition or in a mixture of several kinds.In some cases, it is also preferable to add an appropriate amount of a hydrolytic condensation product of various silicon alkoxides to the composition. .
- photoreaction initiators include diethoxyacetophenone, 2-methyl_1- ⁇ 1- (methylthio) pheninole ⁇ —2-monorefolinopropane, 2-hydroxy_2-methyl-1-phenylenolepropane
- photoreaction initiators include diethoxyacetophenone, 2-methyl_1- ⁇ 1- (methylthio) pheninole ⁇ —2-monorefolinopropane, 2-hydroxy_2-methyl-1-phenylenolepropane
- Acetophenone compounds such as 1-one, 1-hydroxycyclyl hexylphenyl ketone; benzoin compounds such as benzoin and pendinoledimethylketal; benzophenone compounds such as benzophenone and benzoylbenzoic acid; thioxanthone; And thioxanthone compounds such as dichlorothioxanthone.
- phenoxy thermosetting resin layer examples include a polymer layer obtained by thermally crosslinking a phenoxy resin, a phenoxy ether resin, or a phenoxy ester resin represented by the following formula (1) with a polyfunctional isocyanate compound.
- R 1 ! ⁇ 6 are the same or different hydrogen or an alkyl group having 1 to 3 carbon atoms
- R 7 is an alkylene group having 2 to 5 carbon atoms
- X is an ether group, an ester group
- m is An integer of 0 to 3
- n means an integer of 20 to 300, respectively.
- particularly preferred are those in which I 1 and R 2 are methyl groups, R 3 to R 6 are hydrogen, and R 7 is a pentylene group from the viewpoint of easy synthesis and productivity.
- the polyfunctional isocyanate compound may be a compound having two or more isocyanate groups in one molecule, and examples thereof include the following. 2,6-tolylene diisocyanate, 2,4-tolylene diisocyanate, tolylene diisocyanate-trimethylopropane adduct, t-cyclohexane 1,4-diisocyanate, m-phenylene diisocyanate , P-phenylene diisocyanate, hexamethylene diisocyanate, 1,3,6-hexamethylene triisocyanate, isophorone diisocyanate, 1,5-naphthalene diisocyanate, tolidine di Isocyanate, xylylene diisocyanate, hydrogenated xylylene diisocyanate, diphenyl ⁇ methane-1,4,4 'diisocyanate, hydrogenated diphenylenomethane 1,4'A'-diisocyanate, lysine diis
- Polyisocyanates and their mixtures or polyhydric alcohol adducts are preferred.
- the crosslinking rate can be improved by adding a suitable amount of a known tertiary amine such as triethylenediamine or an organic tin compound such as dibutyltin dilaurate as a reaction accelerator.
- a suitable amount of a known tertiary amine such as triethylenediamine or an organic tin compound such as dibutyltin dilaurate as a reaction accelerator.
- the epoxy thermosetting resin layer various types can be used. Among them, a layer obtained by thermally cross-linking a nopolak-type epoxy resin represented by the following formula (2) is preferable.
- R 8 represents hydrogen or a methyl group
- R 9 represents hydrogen or a glycidylphenyl ether group.
- q represents an integer from 1 to 50, but in practice, the value of q is generally difficult to specify because it has a distribution, but it is preferable that the average number is large, and 3 or more More preferably, it is 5 or more.
- a known curing agent is used as a curing agent for crosslinking such an epoxy resin.
- a curing agent such as an amine-based polyaminoamide-based acid, acid and acid anhydride, imidazole, mercaptan, and phenol resin is used.
- acid anhydrides and alicyclic amines are preferably used, and acid anhydrides are more preferable.
- the acid anhydrides include alicyclic acid anhydrides such as methylhexahydro anhydrous phthalic acid and methyl detrahydrophthalic anhydride, aromatic acid anhydrides such as phthalic anhydride, and aliphatic acids such as dodecenyl phthalic anhydride.
- the power of acid anhydrides is particularly preferred, especially methylhexahydrophthalic anhydride.
- the alicyclic amine include bis (4-amino-3-methyldicyclohexyl) methane, diaminocyclohexylmethane, and isophoronediamine, and in particular, bis (4-amino-3-methyldicyclohexyl). Methane is preferred.
- a reaction accelerator for accelerating the curing reaction between the epoxy resin and the acid anhydride may be added.
- reaction promoters such as benzylmethylamine, 2,4,6-tris (dimethyaminomethinole) pheno ⁇ , pyridine, 1,8-diazabicyclo (5,4,0) pentacene-1 and the like.
- Curing catalysts such as amines and dimidazoles.
- the silicon alkoxide polymer layer it is preferable to use a mixture of two or more kinds of silicon alkoxides having 2 to 4 functionalities, more preferably 3 to 4 functionalities, and to use these in advance in a solution. If it is moderately hydrolyzed, it is also preferable to use one obtained by subjecting it to dehydration condensation and moderately oligomerization.
- silicon alkoxides include, for example, tetramethoxysilane, tetraethoxysilane, Methyltrimethoxysilane, methyltriethoxysilane, dimethyldimethoxysilane, ⁇ -glycidoxypropyltrimethyoxysilane, ⁇ - (3,4 epoxycyclohexyl) ethyl trimethyoxysilane, vinylinoletrimethoxysilane, ⁇ - ⁇ (aminoethynole) ⁇ -aminoprobitrimethoxysilane ⁇ - ⁇ (aminoethyl) ⁇ -aminopropylmethyldimethoxysilane, ⁇ -aminopropyltriethoxysilane, and the like.
- silicon alkoxides are capable of further increasing the degree of cross-linking by irradiating the coating film with actinic rays such as ultraviolet rays and ⁇ as required, where the polymerization proceeds by heating.
- a transparent conductive layer is formed on the surface of the polymer film opposite to the light scattering layer.
- the transparent conductive layer used in the present invention is a layer composed of a metal oxide.
- metal oxides include, for example, tin oxide, cadmium, molybdenum, tungsten, fluorine, zinc-containing indium oxide, antimony-containing tin oxide, tin oxide, and oxidized dominate. Is mentioned. Among them, indium oxide containing tin in terms of transparency ⁇ Pi conductive (IT ⁇ ⁇ ) is preferred. Alternatively, it is preferable that silicon, titanium, zinc or the like is further added as a third element to ITO.
- the thickness of the transparent conductive layer is preferably 15 nm or more in order to obtain sufficient conductivity, and 150 nm in order to obtain a sufficiently transparent film. It is preferred that: Particularly preferred is 17 to 14 Onm. Cured resin layer>
- the transparent conductive layer on the surface of the polymer film A opposite to the light scattering layer it is preferable to provide a cured resin layer on the surface of the polymer film A in advance.
- the presence of the cured resin layer can prevent the solvent from damaging the polymer film A in the process of processing into a touch panel.
- the thickness of the cured resin layer is preferably from 0.1 to 10 ⁇ , more preferably from 2 to 10 ⁇ .
- the hardened resin layer does not necessarily have to be a single layer, and two or more layers may be laminated. Further, an anchor layer may be provided between the cured resin layer and the polymer film A in order to improve the adhesion between the cured resin layer and the polymer film A. .
- the same resin as the polymer constituting the light scattering layer can be used.
- fine particles in the cured resin layer when the surface of the cured resin layer is provided with irregularities, Since the Newton ring generated between the movable electrode substrate and the fixed electrode substrate can be prevented, the visibility is further improved.
- the fine particles to be added to the cured resin layer include fine silica particles, crosslinked acryl fine particles, and crosslinked polystyrene fine particles.
- the surface irregularities can be controlled by adjusting the particle size of the fine particles used, the mixing ratio between the fine particles and the cured resin, the thickness of the cured resin layer, and the like.
- (A) (i) a cured resin component; (ii) at least one kind of fine particles having an average primary particle diameter of 0.5 ⁇ to 5 / m; and (iii) an average primary particle diameter of 100 nm.
- at least one kind of ultrafine particles B selected from the group consisting of the following metal oxides and metal or metal fluorides,
- the content of the fine particles A is at least 0.3 part by weight and less than 1.0 part by weight per 100 parts by weight of the resin component;
- the content of the ultrafine particles B is 1 part by weight or more and 20 parts by weight or less per 100 parts by weight of the resin component
- the function of preventing Newton's ring from occurring between the movable electrode substrate and the fixed electrode substrate is provided, and the screen of the liquid crystal display device is less likely to flicker.
- the fine particles A as long as the average primary particle diameter is 0.5 ⁇ m or more and 5 ⁇ m or less, it can be used without particular limitation on the type of compound.
- the S i 0 2 or S i 0 2 a main component or a crosslinking component, styrene, acrylic, a fine particle mainly comprising polymer such as butadiene.
- Such fine particles may be subjected to a treatment such as surface modification. Further, two or more kinds of such fine particles may be used as a mixture.
- the fine particles A can be mixed with materials having different average primary particle diameters so as to have a broad particle diameter distribution.
- the content of the fine particles A is not particularly limited, but the content of the fine particles A is from 0.3 parts by weight or more to 1.0 parts by weight based on 100 parts by weight of the cured resin component. Is preferably less than 0.3 parts by weight to 0.9 parts by weight, and more preferably from 0.3 parts by weight to 0.8 parts by weight. If the content is less than 0.3 parts by weight, it is difficult to suppress the generation of Newton rings. On the other hand, if the content exceeds 1.0 part by weight, the power haze, which is excellent for preventing the generation of Newton's rings, becomes high, so that information such as images and characters on the liquid crystal display device tends to be blurred, which is not preferable.
- the ultrafine particles B having an average primary particle diameter of 100 nm or less can be used without any particular limitation on the kind of the compound.
- a 1 2 0 3, B i 2 0 3, C E_ ⁇ 2, I n 2 ⁇ 3, (I n 2 O s - S n 0 2), H f 0 2, L a 2 0 3, M g F 2, S b 2 0 5, (S b 2 ⁇ 5 'S N_ ⁇ 2), S I_ ⁇ 2, S n 0 2, T I_ ⁇ 2, Y 2 0 3, Z n O mention may be made of also made of also made of a metal oxide or a metal fluoride, such as Z r O 2. These may be used in combination of two or more.
- the metal oxide and the metal fluoride can be used simultaneously.
- the refractive index of the ultrafine particles B is larger than the refractive index of the cured resin component, the resulting cured resin layer tends to have a high haze.
- M g F 2 may be preferably mentioned Invite example embodiment as the material. Since these ultrafine particles B have a very large specific surface area and generally tend to aggregate, they are often manufactured and sold as a slurry in which a dispersant is added and dispersed in a solvent.
- a dispersant for example, various types such as fatty acid amine type, sulfonic acid amide type, ⁇ -force prolactone type, hydrostearic acid type, polycarboxylic acid type, and polyesteramine can be used.
- the dispersion medium general ones represented by alcohols, water, ketones, aromatics and the like can be used.
- the average primary particle diameter of the ultrafine particles is preferably small so that the cured resin layer does not cause whitening due to internal haze, and is preferably 1 O Onm or less.
- the average primary particle diameter of the ultrafine particles B is more preferably 80 ⁇ or less, and further preferably 60 nm or less. Although the lower limit is not particularly limited, it is 5 nm.
- the average primary particle diameter of the ultrafine particles B can be measured using a laser diffraction / scattering type particle size distribution analyzer. The actual size can also be measured by using a transmission electron microscope or the like in a simple manner.
- a hardened resin layer containing ultrafine particles B is embedded with an epoxy resin or the like, and the epoxy resin layer is completely hardened and then sliced with a microtome to prepare a measurement sample. Furthermore, the measurement sample is observed with a transmission electron microscope, the size of the ultrafine particles is randomly measured at 10 or more points, and these measured values are averaged to determine the average primary particle diameter.
- the content of the ultrafine particles B dispersed in the cured resin layer is preferably not less than 1 part by weight and not more than 20 parts by weight, based on 100 parts by weight of the cured resin component. It is 2 parts by weight or more and 10 parts by weight or less, and more preferably 3 parts by weight or more and 7 parts by weight or less.
- the ultrafine particles B have an effect of flattening (leveling) the cured resin layer. When the content of the ultrafine particles B is in the above range, a suitable surface unevenness is formed on the cured resin layer due to a synergistic effect with the fine particles A, and thus the surface unevenness exerts a function of preventing Newton's ring from occurring, and LCD screen flickers little.
- the amount of the ultrafine particle B component is less than 1 part by weight, it is difficult to level the cured resin layer, and the surface unevenness of the cured resin layer becomes too large, so that the flicker of the screen of the liquid crystal display device becomes noticeable.
- the ultrafine particle B component exceeds 20 parts by weight, the cured resin layer The function that prevents Newton's ring from being sufficiently expressed due to excessive leveling.
- An optical interference layer can be provided between the polymer film A and the transparent conductive layer. By providing the optical interference layer, the color tone of the touch panel is further improved.
- the arrangement of the optical interference layer is between the polymer film A and the transparent conductive layer, and the cured resin layer, the optical interference layer, and the transparent conductive layer are provided in this order from the polymer film A side. Is advantageous in terms of productivity and effectiveness.
- the optical interference layer is composed of a high refractive index layer and a low S refractive index layer, and the low refractive index layer is preferably in contact with the transparent conductive layer.
- the high refractive index layer and the low refractive index layer are made of a crosslinked polymer, and at least one of the high refractive index layer and the low refractive index layer contains ultrafine particles having an average primary particle diameter of 1,000 m or less. Is preferred.
- the crosslinked polymer a crosslinked polymer of a thermosetting resin or a radiation curable resin can be used in addition to a crosslinked polymer obtained by hydrolysis and condensation polymerization of a metal alkoxide.
- crosslinked polymers obtained by hydrolysis and condensation polymerization of metal alkoxides titanium alkoxides, zirconium alkoxides and alkoxysilanes are hydrolyzed and condensed from the viewpoint of excellent mechanical strength, stability and adhesion.
- a crosslinked polymer obtained by polymerization is preferred.
- titanium alkoxide examples include titanium tetraisopropoxide, tetra-n-propyl orthotitanate, titanium tetra-n-butoxide, and tetrakis (2-ethylhexyloxy) titanate.
- zirconium alkoxide examples include zirconium. Examples thereof include uranium tetraisopropoxide and zirconium tetra-n-butoxide.
- alkoxysilane examples include tetramethoxysilane, tetraethoxysilane, methyltrimethoxysilane, methyltriethoxysilane, dimethinoresimethoxysilane, ⁇ -glycidoxypropyltrimethoxysilane, ⁇ - (3,4 epoxycyclohexyl) ethynoletrimethoxysilane, Examples thereof include butyltrimethoxysilane, ⁇ _ ⁇ (aminoethyl) ⁇ / aminopropyltrimethoxysilane, ⁇ - ⁇ (aminoethyl) ⁇ -aminopropylmethyldimethoxysilane, ⁇ -aminopropyltriethoxysilane, and the like.
- an alkoxysilane having an amino group in the molecule is contained in a weight ratio of 0.5 to 60%.
- These metal alkoxides may be used as monomers, or may be used after being subjected to hydrolysis and dehydration condensation in advance to be appropriately oligomerized.However, usually, a coating solution dissolved and diluted in an appropriate organic solvent is placed on a substrate. Apply. The coating film formed on the substrate undergoes hydrolysis due to moisture in the air and the like, followed by dehydration condensation polymerization.
- appropriate heat treatment is required to promote condensation polymerization, and it is preferable to perform heat treatment at a temperature of 100 ° C or more for several minutes or more in the coating method.
- the degree of crosslinking can be further increased by irradiating the coating with actinic rays such as ultraviolet rays in parallel with the heat treatment.
- Diluting solvents include alcohol-based and hydrocarbon-based solvents such as ethanol, 2-propanol, butanol, 2-methyl-1-propanol, 1-methoxy-2-propanol, hexane, cyclohexane, and rigs. Mouth-in and the like are preferred, but other polar solvents such as xylene, toluene, cyclohexanone, methyl isobutyl ketone, and isobutyl acetate can also be used. These can be used alone or as a mixed solvent of two or more.
- alcohol-based and hydrocarbon-based solvents such as ethanol, 2-propanol, butanol, 2-methyl-1-propanol, 1-methoxy-2-propanol, hexane, cyclohexane, and rigs. Mouth-in and the like are preferred, but other polar solvents such as xylene, toluene, cyclohexanone,
- the refractive index can be adjusted by including ultrafine particles having an average primary particle size of 100 nm or less in at least one of the high refractive index layer and the low refractive index layer.
- the average primary particle size is preferably 100 nm or less, more preferably 50 nm or less.
- ultrafine average primary particle diameter 100 nm, for example, A 1 2 0 3, B i 2 0 3, C E_ ⁇ 2, I n 2 ⁇ 3, I n 2 0 3 'Sn_ ⁇ 2, H f 0 2, L a 2 ⁇ 3, S b 2 0 5, S b 2 0 5 ⁇ S nO 2, S n0 2, T i 0 2, Y 2 0 3, ZnO, metal oxides such as Z r O 2 ultrafine particles of a product, ultrafine particles are exemplified made of a metal fluoride such Mg F 2.
- the thus obtained transparent conductive laminate of the present invention can be used as a movable electrode substrate or a fixed electrode substrate of a touch panel.
- the transparent conductive laminate of the present invention can be used as an electrode substrate of a touch panel, and the touch panel can be incorporated in a liquid crystal display device for use.
- the polarizing plate used at this time is obtained by laminating a protective film on one side or both sides as necessary on the polarizing film described below.
- the polarizing film include (i) a hydrophilic polymer film such as a polyvinyl alcohol-based film, a partially formalized polyvinyl alcohol-based film, a saponified ethylene monoacetate copolymer-based film, and a cellulose-based film, and iodine and / or two colors. Iodine and / or a dichroic organic dye-based polarizing film that is made to adsorb and orient a hydrophilic organic dye, and (ii) a polyvinyl alcohol-based film is dehydrated to form polyene and oriented.
- a polyene-based polarizing film obtained by subjecting a polyene chloride film to a dehydrochlorination treatment to form and align polyene.
- Those having a thickness of usually 10 to 80 / zm are used.
- a polarizing film was prepared by blending a dichroic organic dye with a hydrophobic polymer in advance, forming the film into a film by a known method, stretching in at least one direction, and further heat setting. Films can also be used.
- the spherical water-based polymer may be any material that does not cause changes such as shrinkage and swelling under the condition of a temperature of 100 ° C.
- polyethylene terephthalate, polybutylene terephthalate Polyester resins such as polyester resins, polycarbonate resins, polyamide resins such as Nylon-6, Nylon-16, and Nylon-12, polychlorinated butyl resins, polyolefin resins such as polypropylene, and polyether resins. And polysulfone-based resins. Particularly preferred are polyethylene terephthalate, nylon-16, nylon-166, and nylon-12.
- the dichroic organic dye has a dichroic structure in terms of molecular structure, and particularly preferably has heat resistance and weather resistance.
- a dichroic organic dye is blended with the above-mentioned hydrophobic polymer using a Henschel mixer, a blender, or the like.
- a method such as a method, it is supplied to a stretching step.
- the resin is stretched in one direction at an appropriate temperature not lower than the glass transition point of the resin but not higher than the melting point as high as possible to increase the surface area and at the same time reduce the thickness.
- the stretching direction is not particularly limited to one direction, and if necessary, the film may be stretched at a low magnification in a direction perpendicular to the stretching direction to improve the mechanical strength of the film.
- polarizing films are preferably from 20 to 200 Aim.
- a protective film can be laminated on one or both sides of the polarizing film as necessary.
- an optically isotropic film having a retardation value of 30 nm or less and / or a film stretched in only one direction can be used.
- a transparent conductive laminate is not laminated on the polarizing film and a protective film is laminated on the surface coming to the side.
- optically isotropic film having a retardation value of 30 nm or less examples include polysulfone resins such as polycarbonate resins, polysulfone, polyethersulfone, and polyarylsulfone, and polyolefin resins.
- a film of acetate resin such as cellulose triacetate, or a film of polyarylate resin, having a thickness of 10 to 20 0; am.
- Polysulfone resins such as polysulfone, polyethersulfone, and polyallylsulfone, polymethylpentene, polystyrene, polyolefin, polyamide, methyl polymethacrylate, polychlorinated vinyl, triacetate, and other resins are stretched in one direction only.
- a film made of the above polyester is stretched at least 5%, preferably 50 to 80% only in the vertical or horizontal axis direction, and is stretched at 100 ° CX 60 minutes Formed by 230 ° heatset CX 5 minutes, it is preferred arbitrariness having a thickness of 10 to 200 / m.
- a layer having an antireflection function, an antiglare function, and an abrasion resistance function is provided on the surface of the polarizing plate on the input operation side. be able to.
- the transparent conductive laminate (R) in the present invention is a laminate having a transparent conductive layer on at least one surface of a transparent substrate made of a polymer film or glass.
- transparent photoelastic constant used for the electroconductive laminate (P) is 70 X 10- 12 P a of the present invention - from 1 (70X 10 ⁇ 13 cmVd yne ) following polymer
- the same film A can be used.
- such a polymer film may be used by laminating two or more layers, or may be a laminate with a glass plate.
- it is necessary to consider the retardation value of the transparent substrate so as to match the optical design of the entire liquid crystal display device with a touch panel.
- the thickness of the transparent substrate is preferably 50 to 2000 m. Especially 75 ⁇ : 1500 ⁇ m is preferred. If the thickness is less than 50 ⁇ , it is difficult to process the transparent conductive layer. On the other hand, if the thickness exceeds 2000 ⁇ , the touch panel becomes too thick and is not suitable for use in portable information devices.
- the transparent substrate is preferably either an optically isotropic substrate having a retardation value of 30 nm or less, or a substrate providing a phase difference of 1Z4 wavelength.
- the transparent substrate is an optically isotropic substrate
- the optical axis of the transparent conductive laminate R be arranged in a direction parallel or perpendicular to the optical axis of the transparent conductive laminate P to form a touch panel.
- the transparent conductive laminate R can also serve as the retardation film 2.
- the touch panel is configured such that the optical axis of the transparent conductive laminate R and the optical axis of the transparent conductive laminate P are orthogonal to each other.
- the touch panel of the present invention can be generally used if it is a reflective liquid crystal (Reflective LCD), a transmissive liquid crystal (Transmissive LCD), or a transflective liquid crystal (ransflective LCD) which requires a polarizing plate for display.
- Reflective LCD reflective liquid crystal
- Transmissive LCD transmissive liquid crystal
- transflective liquid crystal randomsflective LCD
- TN, STN, ECB electrically controlled birefringence
- CSH color super homeotropic OCB (optical compensated bend)
- HAN half aligned nematic
- VA vertical aligned
- IPS in plain switching
- ferroelectric, antiferroelectric Cholesteric phase transition
- GH guest host
- the touch panel of the present invention has a great effect when used in combination with a liquid crystal display device, but can also be used for devices other than the liquid crystal display device.
- an organic light-emitting diode (OLED) can be mentioned.
- the touch panel manufactured as described above is called an inner type of a circularly polarizing plate type when placed on a display device such as a liquid crystal (LCD) or an organic light-emitting diode (OLED), that is, on the observer side. It is provided as a display device with a touch panel or a display device with a touch panel called a built-in type.
- a display device with a touch panel or a display device with a touch panel called a built-in type.
- the touch conductive panel which is excellent in visibility and does not show discoloration at high temperature and a liquid crystal display device using the same can be provided.
- the retardation value and the photoelastic constant were measured with a spectroscopic ellipsometer “ ⁇ 150 ” (manufactured by JASCO Corporation).
- the surface heated to 80 ° C has a touch panel on a hot plate with a mirror surface, and the polarizing plate is on the top. After standing for 1 minute, the color change of the touch panel was examined.
- aqueous sodium hydroxide solution and ion-exchanged water are charged into a reaction tank equipped with a stirrer, a thermometer, and a reflux condenser, and the monomers (E) and (F) having the above structure are dissolved in a 50:50 molar ratio.
- a small amount of hydrosulfite was added.
- methylene chloride was added thereto, and phosgene was blown at 20 ° C for about 60 minutes.
- p-tert-butylphenol was added to emulsify the mixture, and then triethylamine was added thereto, followed by stirring at 30 ° C. for about 3 hours to terminate the reaction.
- This copolymer was dissolved in dimethylene chloride to prepare a dope solution having a solid content of 18% by weight.
- the dope solution was prepared cast film from Li thickness 95 Myupaiiota by longitudinal uniaxial stretching to 30 times 1. At 220 ° ⁇ , Rita one Deshiyon value 138 nm, the optical elastic constant 60X 10- 12 P a one 1 A retardation film (3) was obtained.
- polyester atarilate (Aronix M8060 manufactured by Toa Chemical Co., Ltd.) 50 parts by weight of dipentaerythritol hexaatalylate (DPHA, manufactured by Nippon Kayaku Co., Ltd.), 7 parts by weight of photoinitiator (Irgacure 184, manufactured by Ciba-Geigy Co., Ltd.) 200 parts by weight of 1-methoxy-2-propanol A coating solution A was prepared. Further, 0.2 parts by weight of silicone crosslinked fine particles (Tospearl 130 manufactured by GE Toshiba Silicone Co., Ltd.) having an average particle size of about 3 ⁇ are added to the coating solution A as fine particles with respect to 100 parts by weight of the resin component.
- DPHA dipentaerythritol hexaatalylate
- photoinitiator Irgacure 184, manufactured by Ciba-Geigy Co., Ltd.
- Working fluid ⁇ was obtained. Also, 0.5 parts by weight of silicone cross-linked fine particles (G ⁇ Toshiba Silicone Co., Ltd., Tospearl 130) having an average particle diameter of about 3 ⁇ are added to the coating liquid based on 100 parts by weight of the resin component. Thus, a coating liquid C was obtained.
- silicone cross-linked fine particles G ⁇ Toshiba Silicone Co., Ltd., Tospearl 130
- One side of the above retardation film (3) is coated with the coating solution ⁇ ⁇ with a mic opening gravure coating device, dried at 60 ° C for 1 minute, and then integrated with a high-pressure mercury lamp having an intensity of 160 w / cm.
- the light-scattering layer (2) having a thickness of about 2 ⁇ was provided by curing the coating film under the condition of 450 mJ / cm 2 .
- the haze value of the light scattering layer alone was 0.5%.
- the coating liquid C was applied to the surface of the retardation film (3) opposite to the side on which the light scattering layer was provided, using a micro Daravia coating device, dried at 60 ° C.
- an ITO film is laminated on the above cured resin layer (4) by sputtering using an indium oxide-tin oxide target with a composition of 9: 1 by weight and an indium-tin oxide target with a packing density of 98%.
- a transparent conductive laminate (14-1) of Example 1 was obtained.
- the thickness of the ITO film was 20 ⁇ m, and the resistance value was 330 ⁇ / port.
- the retardation value hardly changed at 137 nm.
- the coating liquid A was applied to one side of the retardation film (3) using a microgravure coating apparatus, dried at 60 for 1 minute, and integrated with a high-pressure mercury lamp of 160 w / cm in intensity 450 mJ /
- a transparent resin layer having a thickness of about 2 ⁇ was provided.
- the ⁇ resin value of the transparent resin layer alone was 0%.
- a cured resin layer having a thickness of about 2 im was provided on the surface of the retardation film (3) opposite to the side on which the transparent resin layer was provided.
- a transparent conductive laminate (14-1) of Comparative Example 1 was obtained by laminating an ITO film on the cured resin layer.
- the thickness of the ITO film was 20 nm, and the resistance was 340 ⁇ / port.
- the retardation value was almost unchanged at 137 nm. .
- an SiO 2 film is provided on both sides of a glass plate (8) with a thickness of 1.1 mm by dip coating, and then an ITO film with a thickness of 18 nm is provided as a transparent conductive layer by sputtering.
- a transparent conductive laminate (15) was obtained.
- a height of 7 ⁇ m and a diameter of 70 ⁇ m on the ITO film A dot spacer with an m and pitch of 1.5 mm was provided.
- the transparent conductive layers (14-11) and the transparent conductive layer ( ⁇ film) of the transparent conductive laminate (15) face each other. In this manner, a touch panel portion of a bonded analog type was manufactured.
- a triacetate film was bonded to both sides of a uniaxially stretched polyvinyl alcohol film containing iodine as a polarizer via an adhesive to obtain a polarizing plate (13) on the input operation side having a thickness of 150 / in.
- An anti-glare hard coat layer was provided on the input operation surface of the polarizing plate (13).
- the polarizing plate (13) and the transparent conductive laminate (14-) are bonded through an adhesive so that the angle between the optical axis of the polarizing plate (13) and the optical axis of the retardation film (3) becomes 45 degrees.
- touch panels of Example 1 and Comparative Example 1 were produced.
- a light scattering layer (2) having a thickness of about 2 ⁇ was provided on one surface of the retardation film (3) of Example 1 in the same manner as in Example 1.
- the haze value of the light scattering layer alone was 0.5%.
- a cured resin layer (4) having a thickness of about 2 ⁇ was provided on the surface of the retardation film (3) opposite to the side on which the light scattering layer was provided in the same manner as in Example 1.
- the primary liquid is mixed in the mixed liquid.
- weight ratio of the 2 0 nm T i 0 2 ultrafine particles T i O 2 ultrafine particles and the metal alkoxide particle size is 30: mixed coating so that 70 Make liquid F Made.
- the coating liquid F was applied on the cured resin layer of the retardation film 3 using a Micro Daravia coating device, and dried at 130 ° C.
- the coating liquid E is applied on the high refractive index layer using a microgravure coating apparatus, and dried at 130 ° C for 2 minutes to form a low refractive index layer (10) having a film thickness of 45 nm and a high refractive index.
- An optical interference layer composed of a refractive index layer and a low refractive index layer was formed.
- an ITO film was formed on the low refractive index layer by sputtering using an indium-tin oxide target having a composition of indium oxide and tin oxide at a weight ratio of 9: 1 and a packing density of 98%.
- a transparent conductive laminate (14-2) was obtained.
- the thickness of the ITO layer was about 20 nm, and the surface resistance was about 300 ⁇ / port. The retardation value hardly changed at 137 nm.
- an insulating layer, and an adhesive layer place the transparent conductive laminate (14-12) and the transparent conductive laminate (15) so that the transparent conductive layers face each other. In this way, a touch panel portion of a bonded analog type was manufactured.
- a polarizing plate (13) was obtained in exactly the same manner as in Example 1.
- An anti-glare hard coat layer was provided on the input operation side of the polarizing plate (13).
- the polarizing plate (13) and the transparent conductive laminate (14) are placed through an adhesive so that the angle between the optical axis of the polarizing plate (13) and the optical axis of the retardation film (3) becomes 45 degrees.
- the touch panel of Example 2 was produced by laminating 1).
- the Z4 retardation film (18) is placed on a polarizing plate (19) of a liquid crystal display device.
- the polarizing plate (19) The optical axis and the optical axis of the retardation film 18 were bonded so as to be 135 degrees.
- the touch panel of Example 2 was placed on the liquid crystal display device with a gap of 0.4 mm so that the optical axis of the polarizing plate (13) 'and the optical axis of the polarizing plate (19) became parallel.
- a liquid crystal display device with a touch panel of a circularly polarizing plate type was manufactured.
- the liquid crystal display device clearly showed an image even when viewed outdoors. Further, there was no color change of the liquid crystal display device depending on the presence or absence of the touch panel. '
- a transparent conductive laminate was prepared using the following retardation film instead of the retardation film (3) in the transparent conductive laminate constituting the touch panel of Example 2 (Comparative Example 2).
- C1400 glass transition temperature jjl 55 ° C
- Teijin Chemicals Ltd. was dissolved in methylene chloride to prepare a dope solution having a solid content of 18% by weight.
- the thickness 70 Aim by longitudinal uniaxial stretching to 1.05 times at 155, Ritade Chillon value 1 38 nm, photoelastic constant 90 X 10 - is 1 - 12 P a A retardation film (3) was obtained.
- a light scattering layer was provided on one surface of the retardation film (3). Further, a cured resin layer, a high refractive index layer, a low refractive index layer, and an ITO film were sequentially provided on the surface opposite to the side on which the light scattering layer was provided, to obtain a transparent conductive laminate (14-12).
- the thickness of the IT ⁇ film was 2 Onm, and the resistance was 310 ⁇ . The retardation value changed to 148 nm.
- Example 3 Using the obtained transparent conductive laminate (14-2), a liquid crystal display device with a touch panel having the same configuration as in Example 3 was produced.
- the liquid crystal display device was viewed outdoors, the liquid crystal screen looked yellowish as compared with the case where the touch panel was not provided. Further, when the touch panel was subjected to a high temperature test, discoloration occurred in an arc shape from the adhesive portion (seal portion) toward the inside.
- a coating liquid G comprising 100 parts by weight of urethane acrylate, 7 parts by weight of a photoinitiator (Irgacure 184 manufactured by Ciba-Geigy Corporation), 135 parts by weight of 1-methoxy_2_propanol as a diluent, and 135 parts by weight of isopropanol was prepared. Further, 0.2 parts by weight of silicone cross-linked fine particles (Tospearl 130 manufactured by GE Toshiba Silicone Co., Ltd.) having an average particle size of about 3 ⁇ as fine particles A are added to the coating solution G to 100 parts by weight of the resin component. Coating liquid H was obtained.
- silicone cross-linked fine particles (Tospearl 130 manufactured by GE Toshiba Silicone Co., Ltd.) having an average particle size of about 3 ⁇ m as fine particles A were added to the coating solution G in an amount of 0.7 parts by weight, based on 100 parts by weight of the resin component.
- Coating liquid I was obtained by adding 5 parts by weight of ultrafine particles of MgF 2 as fine particles B to 100 parts by weight of the resin component.
- polymer Fuinoremu (12) is a 5 X 10- 12 P a- 1 ( ZEONOR film, ZF 14 One hundred, ZEON Co., Ltd. h :) Coat the coating solution H on one side with a microgravure coater, dry at 60 ° C for 1 minute, and use a high-pressure mercury lamp with a strength of 160 wZcm.
- the light-scattering layer (2) having a thickness of about 2 ⁇ was provided by curing the coating film under the condition of an integrated light quantity of 450 mJ / cm 2 .
- the haze value of the light scattering layer alone was 0.5%.
- the coating solution I was applied to the surface of the polymer film (12) opposite to the side on which the light scattering layer was provided by a gravure coating device with a microphone opening, dried at 60 ° C. for 1 minute, and dried.
- a cured resin layer (4) with a thickness of about 2 ⁇ was formed by curing the coating film using a 60 cm high-pressure mercury lamp under the conditions of an integrated light quantity of 450 mJ / cm 2 .
- a coating liquid ⁇ and a coating X liquid F were prepared in the same manner as in Example 2. After coating the coating liquid F on the cured resin layer (4) of the polymer film (12) with a microgravure coating device, dry it at 125 ° C for 2 minutes, and dry the high refractive index layer (9 ) Formed. Subsequently, the coating liquid E was applied on the high refractive index layer using a microgravure coating apparatus, and dried at 125 ° C for 2 minutes to form a low refractive index layer (10) having a film thickness of 45 nm and high refractive index. An optical interference layer composed of a refractive index layer and a low refractive index layer was prepared.
- a transparent conductive film is formed on the low refractive index layer by forming an ITO film by sputtering using an indium-tin oxide target with a composition of 9: 1 by weight and a packing density of 98%.
- a laminate (16) was obtained.
- the thickness of the ITO layer was about 20 nm, and the surface resistance was about 300 ⁇ / mouth.
- the retardation value hardly changed.
- LZ4 retardation film (1 1) and Z2 retardation film (3) are laminated one by one, and the transparent conductive laminate (17) is laminated. Obtained.
- the transparent conductive laminate (17) and the transparent conductive laminate (16) are bonded together so that the transparent conductive layers face each other.
- a touch panel portion of a mold was prepared.
- a polarizing plate (13) was obtained in exactly the same manner as in Example 1.
- An anti-glare hard coat layer was provided on the input operation side of the polarizing plate (13).
- the polarizing plate (13) was bonded to the transparent conductive laminate (17) via an adhesive to obtain a touch panel. After the bow I, the touch panel, the liquid crystal cell (21), and the polarizing plate (22) were pasted together to produce a liquid crystal display device with a built-in touch panel of Example 4.
- the liquid crystal display device clearly showed an image even when viewed outdoors. ⁇ Industrial availability
- the transparent conductive laminate of the present invention suppresses reflected light, shows no discoloration, and has good productivity. Therefore, by using a strong laminate, it is possible to provide a touch panel which has excellent visibility, is easily used outdoors, and has high reliability, and a liquid crystal display device using the touch panel.
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
- Position Input By Displaying (AREA)
- Optical Elements Other Than Lenses (AREA)
- Liquid Crystal (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/533,561 US7833588B2 (en) | 2002-12-20 | 2003-12-18 | Transparent conductive laminate, touch panel and touch panel-equipped liquid crystal display |
JP2004562051A JP4059883B2 (ja) | 2002-12-20 | 2003-12-18 | 透明導電性積層体、タッチパネル及びタッチパネル付液晶表示装置 |
EP03782802A EP1574882B1 (en) | 2002-12-20 | 2003-12-18 | Transparent conductive laminate, touch panel and liquid crystal display unit with touch panel |
HK05108892.7A HK1075701A1 (en) | 2002-12-20 | 2005-10-06 | Transparent conductive laminate, touch panel and liquid crystal display unit with touch panel |
HK06106456A HK1086628A1 (en) | 2002-12-20 | 2006-06-06 | Transparent conductive laminate, touch panel and liquid crystal display unit with touch panel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-369580 | 2002-12-20 | ||
JP2002369580 | 2002-12-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004057381A1 true WO2004057381A1 (ja) | 2004-07-08 |
Family
ID=32677144
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/016240 WO2004057381A1 (ja) | 2002-12-20 | 2003-12-18 | 透明導電性積層体,タッチパネル及びタッチパネル付液晶表示装置 |
Country Status (8)
Country | Link |
---|---|
US (1) | US7833588B2 (ja) |
EP (1) | EP1574882B1 (ja) |
JP (1) | JP4059883B2 (ja) |
KR (1) | KR100981901B1 (ja) |
CN (1) | CN100376907C (ja) |
HK (2) | HK1075701A1 (ja) |
TW (1) | TW200416750A (ja) |
WO (1) | WO2004057381A1 (ja) |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100856618B1 (ko) * | 2005-06-29 | 2008-09-03 | 가시오게산키 가부시키가이샤 | 터치패널을 구비한 액정표시장치 |
WO2010114056A1 (ja) * | 2009-03-31 | 2010-10-07 | 帝人株式会社 | 透明導電性積層体及び透明タッチパネル |
JP2011096234A (ja) * | 2009-09-29 | 2011-05-12 | Kyocera Corp | 入力装置、およびこれを備えた表示装置 |
WO2011065531A1 (ja) * | 2009-11-30 | 2011-06-03 | 大日本印刷株式会社 | 光学フィルム及びタッチパネル |
WO2011162414A1 (en) * | 2010-06-25 | 2011-12-29 | Gunze Limited | Transparent planar body and transparent touch panel |
JP2012220854A (ja) * | 2011-04-12 | 2012-11-12 | Keiwa Inc | 光学フィルム、光学シート及び液晶表示モジュール |
WO2013038718A1 (ja) * | 2011-09-16 | 2013-03-21 | 東レフィルム加工株式会社 | 透明導電性フィルムおよびタッチパネル |
JP2014089269A (ja) * | 2012-10-29 | 2014-05-15 | Dainippon Printing Co Ltd | インセルタッチパネル液晶素子の前面用の光学積層体及びインセルタッチパネル液晶表示装置、並びにそれらの製造方法 |
CN104205021A (zh) * | 2012-03-30 | 2014-12-10 | 应用材料公司 | 用于触控屏幕面板的透明体的制造方法及系统 |
KR20160035702A (ko) * | 2014-09-23 | 2016-04-01 | (주)엘지하우시스 | 뉴턴링 방지 필름 및 그 제조방법 |
JP2017054141A (ja) * | 2016-11-16 | 2017-03-16 | 大日本印刷株式会社 | インセルタッチパネル液晶素子の前面用の光学積層体及びインセルタッチパネル液晶表示装置、並びにそれらの製造方法 |
WO2017135239A1 (ja) * | 2016-02-05 | 2017-08-10 | 三菱ケミカル株式会社 | 光学積層体および該光学積層体を用いた画像表示装置 |
JP2017142492A (ja) * | 2016-02-05 | 2017-08-17 | 三菱ケミカル株式会社 | 光学積層体および該光学積層体を用いた画像表示装置 |
JP2017161719A (ja) * | 2016-03-09 | 2017-09-14 | 日東電工株式会社 | 光学補償層付偏光板およびそれを用いた有機elパネル |
JP2018024136A (ja) * | 2016-08-09 | 2018-02-15 | 株式会社カネカ | 透明導電性積層体 |
CN112505814A (zh) * | 2019-09-13 | 2021-03-16 | 住友化学株式会社 | 光学层叠体以及利用其的显示装置 |
TWI849200B (zh) | 2019-09-13 | 2024-07-21 | 日商住友化學股份有限公司 | 光學積層體及使用該光學積層體的顯示裝置 |
Families Citing this family (52)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7833588B2 (en) * | 2002-12-20 | 2010-11-16 | Teijin Limited | Transparent conductive laminate, touch panel and touch panel-equipped liquid crystal display |
KR100638819B1 (ko) * | 2005-05-19 | 2006-10-27 | 삼성전기주식회사 | 광추출효율이 개선된 수직구조 질화물 반도체 발광소자 |
US20070139576A1 (en) * | 2005-12-21 | 2007-06-21 | Alexander Hunt | Display module for an electronic device |
KR100894277B1 (ko) * | 2006-09-15 | 2009-04-21 | 엘지전자 주식회사 | 휴대 단말기 |
KR101410075B1 (ko) * | 2007-01-16 | 2014-06-25 | 데이진 가부시키가이샤 | 투명 도전성 적층체 및 그것으로 이루어지는 터치 패널 |
KR20080072395A (ko) * | 2007-02-02 | 2008-08-06 | 삼성전자주식회사 | 표시 장치 |
JP5033740B2 (ja) * | 2007-10-26 | 2012-09-26 | 帝人株式会社 | 透明導電性積層体およびタッチパネル |
KR20090076754A (ko) * | 2008-01-08 | 2009-07-13 | 주식회사 엘지화학 | 광학 필름, 위상차 필름, 보호 필름 및 이들을 포함하는액정 표시 장치 |
KR20090076753A (ko) | 2008-01-08 | 2009-07-13 | 주식회사 엘지화학 | 투명한 수지 조성물 |
KR101091534B1 (ko) * | 2008-04-30 | 2011-12-13 | 주식회사 엘지화학 | 광학 필름 및 이를 포함하는 정보전자 장치 |
US8613986B2 (en) | 2008-04-30 | 2013-12-24 | Lg Chem, Ltd. | Optical film and information technology apparatus comprising the same |
KR101105424B1 (ko) | 2008-04-30 | 2012-01-17 | 주식회사 엘지화학 | 수지 조성물 및 이를 이용하여 형성된 광학 필름 |
JP5788129B2 (ja) * | 2008-07-18 | 2015-09-30 | 日東電工株式会社 | 透明導電性フィルム及びタッチパネル |
KR101029287B1 (ko) * | 2008-12-03 | 2011-04-18 | 하이디스 테크놀로지 주식회사 | 터치스크린을 적용한 액정표시장치 |
JP2010165032A (ja) * | 2009-01-13 | 2010-07-29 | Hitachi Displays Ltd | タッチパネルディスプレイ装置 |
JP5559497B2 (ja) * | 2009-08-18 | 2014-07-23 | 山本光学株式会社 | 光学物品 |
KR20110037337A (ko) * | 2009-10-06 | 2011-04-13 | 엘지디스플레이 주식회사 | 유기전계발광표시장치와 이의 제조방법 |
KR101131314B1 (ko) * | 2010-04-08 | 2012-04-04 | 삼성전기주식회사 | 터치스크린 일체형 액정 디스플레이 장치 |
US7876288B1 (en) | 2010-08-11 | 2011-01-25 | Chumby Industries, Inc. | Touchscreen with a light modulator |
JP5601944B2 (ja) * | 2010-06-28 | 2014-10-08 | 帝人株式会社 | タッチパネルデバイス、及びタッチパネルデバイス付表示装置 |
KR101420115B1 (ko) * | 2010-07-30 | 2014-07-21 | 주식회사 잉크테크 | 투명 도전막의 제조방법 및 이로부터 제조되는 투명 도전막 |
KR101271469B1 (ko) * | 2010-11-16 | 2013-06-05 | 도레이첨단소재 주식회사 | 터치스크린 패널용 산화방지 필름 및 이를 채용한 터치스크린 패널 |
KR101181342B1 (ko) * | 2011-02-16 | 2012-09-11 | 에쓰이에이치에프코리아 (주) | 터치스크린 |
KR101313663B1 (ko) * | 2011-06-22 | 2013-10-02 | 도레이 필름 카코우 가부시키가이샤 | 투명 도전성 필름 및 터치 패널 |
KR101381817B1 (ko) | 2011-06-30 | 2014-04-07 | 삼성디스플레이 주식회사 | 터치 스크린 패널 |
JP5400904B2 (ja) * | 2011-07-15 | 2014-01-29 | アルプス電気株式会社 | タッチパネル一体型表示装置の製造方法 |
CN103123547A (zh) * | 2011-11-16 | 2013-05-29 | 宸鸿科技(厦门)有限公司 | 光学面板的堆叠结构及其制造方法 |
JP2013109219A (ja) * | 2011-11-22 | 2013-06-06 | Keiwa Inc | 光学シート、透明導電性積層体及びタッチパネル |
JP5264979B2 (ja) * | 2011-11-25 | 2013-08-14 | 日東電工株式会社 | タッチパネルセンサ |
TW201336342A (zh) * | 2012-01-12 | 2013-09-01 | Jsr Corp | 發光元件及發光元件形成用樹脂組成物 |
KR101472806B1 (ko) * | 2012-01-30 | 2014-12-15 | 삼성디스플레이 주식회사 | 터치 패널 및 터치 패널을 포함하는 표시 장치 |
JP6307062B2 (ja) * | 2012-03-30 | 2018-04-04 | アプライド マテリアルズ インコーポレイテッドApplied Materials,Incorporated | タッチパネルで使用される透明体ならびにその製作方法および装置 |
KR101555411B1 (ko) * | 2012-10-12 | 2015-09-23 | 닛토덴코 가부시키가이샤 | 투명 도전성 필름 및 그 용도 |
KR102245511B1 (ko) | 2012-12-27 | 2021-04-28 | 엘지디스플레이 주식회사 | 플렉서블 유기 발광 표시 장치 및 플렉서블 유기 발광 표시 장치 제조 방법 |
JP6576020B2 (ja) * | 2013-03-06 | 2019-09-18 | 日東電工株式会社 | 画像表示装置 |
CN104423654A (zh) * | 2013-08-19 | 2015-03-18 | 杰圣科技股份有限公司 | 触控结构及其制造方法 |
KR102095816B1 (ko) * | 2013-08-27 | 2020-04-01 | 엘지전자 주식회사 | 터치 패널 |
JP2015050100A (ja) * | 2013-09-03 | 2015-03-16 | 日東電工株式会社 | 透明導電性フィルム |
CN104637975B (zh) * | 2013-11-12 | 2018-04-10 | 宸鸿光电科技股份有限公司 | 发光显示装置 |
JP6349126B2 (ja) * | 2014-03-31 | 2018-06-27 | 株式会社ダイセル | ペン入力デバイス用透明積層フィルム及びその製造方法 |
CN104049825B (zh) * | 2014-06-25 | 2018-08-03 | 四川点燃科技有限公司 | 一种无需搭桥的投射式电容屏及其制作方法 |
CN104049824A (zh) * | 2014-06-25 | 2014-09-17 | 向火平 | 一种投射式电容屏及其制作方法 |
CN105320318B (zh) * | 2014-06-27 | 2019-08-09 | 宸盛光电有限公司 | 触控装置 |
KR20160001513A (ko) * | 2014-06-27 | 2016-01-06 | 삼성전자주식회사 | 편광 필름, 반사방지 필름 및 표시 장치 |
CN105700217A (zh) * | 2014-11-26 | 2016-06-22 | 联想(北京)有限公司 | 一种偏光片、液晶显示屏和电子设备 |
US10107946B2 (en) * | 2015-07-22 | 2018-10-23 | Nitto Denko Corporation | Polarizing plate with a retardation layer and image display apparatus |
US10656767B2 (en) | 2015-10-06 | 2020-05-19 | American Panel Corporation | Redundant projected capacitive touch panel |
EP3360030B1 (en) * | 2015-10-06 | 2021-11-17 | American Panel Corporation | Redundant touch panel |
US10558314B2 (en) | 2015-10-06 | 2020-02-11 | American Panel Corporation | Redundant resistive touch panel |
JP6971558B2 (ja) * | 2016-10-26 | 2021-11-24 | 日東電工株式会社 | 透明導電性フィルム及びタッチ機能付き表示装置 |
US20220088895A1 (en) * | 2019-02-25 | 2022-03-24 | Ams Sensors Singapore Pte. Ltd. | Manufacture of optical diffusers composed of reflowable materials |
WO2022151466A1 (zh) | 2021-01-18 | 2022-07-21 | 京东方科技集团股份有限公司 | 显示面板和显示装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0550561A (ja) * | 1991-08-20 | 1993-03-02 | Toyobo Co Ltd | 透明導電性フイルム及び透明タツチパネル |
JP2000112663A (ja) * | 1997-11-27 | 2000-04-21 | Kanegafuchi Chem Ind Co Ltd | 透明タッチパネルおよび透明タッチパネル付液晶セル |
JP2000301648A (ja) * | 1999-04-19 | 2000-10-31 | Teijin Ltd | 透明導電性積層体および透明タブレット |
EP1197768A1 (en) * | 2000-04-24 | 2002-04-17 | Teijin Limited | Process for producing retardation film |
Family Cites Families (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS604462B2 (ja) * | 1979-03-02 | 1985-02-04 | ミノルタ株式会社 | 複写機 |
JPH05127822A (ja) | 1991-10-30 | 1993-05-25 | Daicel Chem Ind Ltd | タツチパネル |
DE69419357T2 (de) * | 1993-04-27 | 2000-03-23 | Teijin Chemicals Ltd., Tokio/Tokyo | Modifiziertes aromatisches Polycarbonat Harz und modifiziertes Phenol zu seine Herstellung |
JPH10339872A (ja) | 1997-06-09 | 1998-12-22 | Nitto Denko Corp | 液晶表示装置 |
JPH11149015A (ja) * | 1997-11-14 | 1999-06-02 | Nitto Denko Corp | 積層波長板、円偏光板及び液晶表示装置 |
US6707519B1 (en) * | 1998-02-04 | 2004-03-16 | Seiko Epson Corporation | Three state transflective liquid crystal display |
JP2000012663A (ja) * | 1998-06-17 | 2000-01-14 | Nikon Corp | 基板保持方法及び装置、及びそれを備えた露光装置 |
WO1999066391A1 (fr) | 1998-06-18 | 1999-12-23 | Kaneka Corporation | Ecran tactile transparent et affichage a cristaux liquides avec ecran tactile transparent |
CA2339153C (en) * | 1998-07-31 | 2008-07-29 | Nippon Kayaku Kabushiki Kaisha | Reflectors and transflectors |
DE69928759T2 (de) * | 1998-08-04 | 2006-06-29 | Kaneka Corp. | Flüssigkristallanzeigevorrichtung mit berührungsschirm |
US6369871B1 (en) * | 1998-11-30 | 2002-04-09 | Teijin Limited | Liquid crystal display component and transparent conductive substrate suitable for the same |
JP3926072B2 (ja) * | 1998-12-18 | 2007-06-06 | シャープ株式会社 | 液晶表示装置 |
KR20000053405A (ko) * | 1999-01-07 | 2000-08-25 | 마츠시타 덴끼 산교 가부시키가이샤 | 반사형 액정 표시 장치 |
JP2000302988A (ja) * | 1999-04-22 | 2000-10-31 | Kanegafuchi Chem Ind Co Ltd | 樹脂組成物および光学フィルム |
JP2000314885A (ja) * | 1999-04-28 | 2000-11-14 | Sumitomo Chem Co Ltd | 積層位相差板、その積層偏光板、及びそれらを用いた液晶表示装置 |
EP1081633A2 (en) * | 1999-08-31 | 2001-03-07 | Daicel Chemical Industries, Ltd. | Touch panel and display device using the same |
DE60045758D1 (de) * | 1999-08-31 | 2011-05-05 | Teijin Ltd | Transparenten leitender mehrschichtkörper und damit versehener berührungsempfindlicher bildschirm |
WO2001037007A1 (fr) * | 1999-11-12 | 2001-05-25 | Kaneka Corporation | Film transparent |
JP4624591B2 (ja) * | 2000-04-24 | 2011-02-02 | 帝人株式会社 | 位相差フィルムの製造方法 |
KR100812271B1 (ko) * | 2000-05-17 | 2008-03-13 | 후지필름 가부시키가이샤 | 위상차판, 그 제조방법, 및 그것을 이용한 원편광판, 1/2 파장판 및 반사형 액정표시 장치 |
JP4802409B2 (ja) * | 2000-07-21 | 2011-10-26 | コニカミノルタホールディングス株式会社 | 光学補償フィルム、それを用いた偏光板及び液晶表示装置 |
US6771327B2 (en) * | 2000-09-18 | 2004-08-03 | Citizen Watch Co., Ltd. | Liquid crystal display device with an input panel |
JP3899511B2 (ja) * | 2001-04-27 | 2007-03-28 | Jsr株式会社 | 熱可塑性ノルボルネン系樹脂系光学用フィルム |
JP4238501B2 (ja) * | 2001-04-27 | 2009-03-18 | Jsr株式会社 | 熱可塑性ノルボルネン系樹脂系光学用フィルム |
CN101544075B (zh) * | 2001-09-03 | 2012-12-05 | 帝人株式会社 | 透明导电性叠层体及使用该叠层体的透明触摸面板 |
US7589798B2 (en) * | 2001-09-06 | 2009-09-15 | Nissha Printing Co., Ltd. | Touch panel having upper electrode plate including electrode, polarizing plate, quarter wave plate and heat-resistant transparent resin plate |
TWI225551B (en) * | 2002-04-18 | 2004-12-21 | Nitto Denko Corp | Polarization plate having optical compensation function and liquid crystal display device using the same |
TW200428268A (en) * | 2002-07-15 | 2004-12-16 | Fuji Photo Film Co Ltd | Internal touch panel, and process for producing it and display device |
KR100839402B1 (ko) * | 2002-07-23 | 2008-06-20 | 닛토덴코 가부시키가이샤 | 광학필름 및 이를 사용한 액정표시장치 |
JP2004070344A (ja) * | 2002-07-23 | 2004-03-04 | Nitto Denko Corp | 光学フィルムおよびそれを用いた液晶表示装置 |
AU2003241191A1 (en) * | 2002-08-20 | 2004-03-11 | Samsung Electronics Co., Ltd. | Light guide plate and liquid crystal display having the same |
US7833588B2 (en) * | 2002-12-20 | 2010-11-16 | Teijin Limited | Transparent conductive laminate, touch panel and touch panel-equipped liquid crystal display |
US20060237864A1 (en) * | 2003-04-10 | 2006-10-26 | Yoshikuni Morita | Method for producing optical film |
JP2005222013A (ja) * | 2004-01-06 | 2005-08-18 | Nitto Denko Corp | 偏光板の製造方法、偏光板、光学フィルムおよび画像表示装置 |
JP2006107015A (ja) * | 2004-10-04 | 2006-04-20 | Matsushita Electric Ind Co Ltd | タッチパネル |
-
2003
- 2003-12-18 US US10/533,561 patent/US7833588B2/en not_active Expired - Fee Related
- 2003-12-18 JP JP2004562051A patent/JP4059883B2/ja not_active Expired - Fee Related
- 2003-12-18 EP EP03782802A patent/EP1574882B1/en not_active Expired - Lifetime
- 2003-12-18 CN CNB2003801068266A patent/CN100376907C/zh not_active Expired - Fee Related
- 2003-12-18 WO PCT/JP2003/016240 patent/WO2004057381A1/ja active Application Filing
- 2003-12-18 KR KR1020057005650A patent/KR100981901B1/ko active IP Right Grant
- 2003-12-19 TW TW092136245A patent/TW200416750A/zh not_active IP Right Cessation
-
2005
- 2005-10-06 HK HK05108892.7A patent/HK1075701A1/xx not_active IP Right Cessation
-
2006
- 2006-06-06 HK HK06106456A patent/HK1086628A1/xx not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0550561A (ja) * | 1991-08-20 | 1993-03-02 | Toyobo Co Ltd | 透明導電性フイルム及び透明タツチパネル |
JP2000112663A (ja) * | 1997-11-27 | 2000-04-21 | Kanegafuchi Chem Ind Co Ltd | 透明タッチパネルおよび透明タッチパネル付液晶セル |
JP2000301648A (ja) * | 1999-04-19 | 2000-10-31 | Teijin Ltd | 透明導電性積層体および透明タブレット |
EP1197768A1 (en) * | 2000-04-24 | 2002-04-17 | Teijin Limited | Process for producing retardation film |
Non-Patent Citations (1)
Title |
---|
See also references of EP1574882A4 * |
Cited By (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100856618B1 (ko) * | 2005-06-29 | 2008-09-03 | 가시오게산키 가부시키가이샤 | 터치패널을 구비한 액정표시장치 |
WO2010114056A1 (ja) * | 2009-03-31 | 2010-10-07 | 帝人株式会社 | 透明導電性積層体及び透明タッチパネル |
US10042481B2 (en) | 2009-03-31 | 2018-08-07 | Teijin Limited | Transparent electroconductive laminate and transparent touch panel |
JP2011096234A (ja) * | 2009-09-29 | 2011-05-12 | Kyocera Corp | 入力装置、およびこれを備えた表示装置 |
TWI493233B (zh) * | 2009-11-30 | 2015-07-21 | Dainippon Printing Co Ltd | 光學薄膜及觸控面板 |
WO2011065531A1 (ja) * | 2009-11-30 | 2011-06-03 | 大日本印刷株式会社 | 光学フィルム及びタッチパネル |
JP2011133881A (ja) * | 2009-11-30 | 2011-07-07 | Dainippon Printing Co Ltd | 光学フィルム及びタッチパネル |
CN102713685A (zh) * | 2009-11-30 | 2012-10-03 | 大日本印刷株式会社 | 光学薄膜及触控面板 |
US9151875B2 (en) | 2009-11-30 | 2015-10-06 | Dai Nippon Printing Co., Ltd. | Optical film and touch panel |
WO2011162414A1 (en) * | 2010-06-25 | 2011-12-29 | Gunze Limited | Transparent planar body and transparent touch panel |
JP2012220854A (ja) * | 2011-04-12 | 2012-11-12 | Keiwa Inc | 光学フィルム、光学シート及び液晶表示モジュール |
WO2013038718A1 (ja) * | 2011-09-16 | 2013-03-21 | 東レフィルム加工株式会社 | 透明導電性フィルムおよびタッチパネル |
CN104205021A (zh) * | 2012-03-30 | 2014-12-10 | 应用材料公司 | 用于触控屏幕面板的透明体的制造方法及系统 |
JP2015518596A (ja) * | 2012-03-30 | 2015-07-02 | アプライド マテリアルズ インコーポレイテッドApplied Materials,Incorporated | タッチスクリーンパネル製作方法およびシステムで使用される透明体 |
CN104205021B (zh) * | 2012-03-30 | 2017-05-24 | 应用材料公司 | 用于触控屏幕面板的透明体的制造方法及系统 |
JP2014089269A (ja) * | 2012-10-29 | 2014-05-15 | Dainippon Printing Co Ltd | インセルタッチパネル液晶素子の前面用の光学積層体及びインセルタッチパネル液晶表示装置、並びにそれらの製造方法 |
KR20160035702A (ko) * | 2014-09-23 | 2016-04-01 | (주)엘지하우시스 | 뉴턴링 방지 필름 및 그 제조방법 |
KR101984535B1 (ko) | 2014-09-23 | 2019-06-03 | (주)엘지하우시스 | 뉴턴링 방지 필름 및 그 제조방법 |
WO2017135239A1 (ja) * | 2016-02-05 | 2017-08-10 | 三菱ケミカル株式会社 | 光学積層体および該光学積層体を用いた画像表示装置 |
JP2017142492A (ja) * | 2016-02-05 | 2017-08-17 | 三菱ケミカル株式会社 | 光学積層体および該光学積層体を用いた画像表示装置 |
JP2021081737A (ja) * | 2016-02-05 | 2021-05-27 | 三菱ケミカル株式会社 | 光学積層体 |
JP7044468B2 (ja) | 2016-02-05 | 2022-03-30 | 三菱ケミカル株式会社 | 光学積層体および該光学積層体を用いた画像表示装置 |
JP2017161719A (ja) * | 2016-03-09 | 2017-09-14 | 日東電工株式会社 | 光学補償層付偏光板およびそれを用いた有機elパネル |
JP2018024136A (ja) * | 2016-08-09 | 2018-02-15 | 株式会社カネカ | 透明導電性積層体 |
JP2017054141A (ja) * | 2016-11-16 | 2017-03-16 | 大日本印刷株式会社 | インセルタッチパネル液晶素子の前面用の光学積層体及びインセルタッチパネル液晶表示装置、並びにそれらの製造方法 |
JP2021043421A (ja) * | 2019-09-13 | 2021-03-18 | 住友化学株式会社 | 光学積層体およびそれを用いた表示装置 |
CN112505814A (zh) * | 2019-09-13 | 2021-03-16 | 住友化学株式会社 | 光学层叠体以及利用其的显示装置 |
TWI849200B (zh) | 2019-09-13 | 2024-07-21 | 日商住友化學股份有限公司 | 光學積層體及使用該光學積層體的顯示裝置 |
Also Published As
Publication number | Publication date |
---|---|
US7833588B2 (en) | 2010-11-16 |
JPWO2004057381A1 (ja) | 2006-04-27 |
KR20050083709A (ko) | 2005-08-26 |
HK1086628A1 (en) | 2006-09-22 |
JP4059883B2 (ja) | 2008-03-12 |
US20060013967A1 (en) | 2006-01-19 |
KR100981901B1 (ko) | 2010-09-13 |
EP1574882A1 (en) | 2005-09-14 |
TWI347615B (ja) | 2011-08-21 |
EP1574882B1 (en) | 2013-01-23 |
EP1574882A4 (en) | 2007-09-12 |
CN100376907C (zh) | 2008-03-26 |
CN1729410A (zh) | 2006-02-01 |
TW200416750A (en) | 2004-09-01 |
HK1075701A1 (en) | 2005-12-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2004057381A1 (ja) | 透明導電性積層体,タッチパネル及びタッチパネル付液晶表示装置 | |
US7824043B2 (en) | Reflection preventing layered product and optical member | |
US6917400B2 (en) | Anti-reflection film, polarizing plate comprising the same, and image display device using the anti-reflection film or the polarizing plate | |
US7486442B2 (en) | Polarizer protective film, polarizing plate, and visual display | |
JP4902516B2 (ja) | 視角制御システムならびに画像表示装置 | |
JP3626624B2 (ja) | 透明導電性積層体および透明タブレット | |
WO1999066391A1 (fr) | Ecran tactile transparent et affichage a cristaux liquides avec ecran tactile transparent | |
US20070081209A1 (en) | Image display device | |
WO2001016963A1 (fr) | Corps conducteur transparent multicouches et ecran tactile comprenant ce dernier | |
KR20050045873A (ko) | 광학용 필름 | |
KR20080114703A (ko) | 편광판 및 액정 표시 장치 | |
WO2005052956A1 (ja) | 透明導電性積層体及びそれを用いた透明タッチパネル | |
JP6677722B2 (ja) | 水平配向型液晶表示装置 | |
JP2007256475A (ja) | 液晶表示用偏光板並びに液晶表示装置 | |
JP4682897B2 (ja) | 液晶表示用偏光板及び液晶表示装置 | |
WO2005050300A1 (ja) | 液晶表示装置 | |
JP3388099B2 (ja) | 透明導電性積層体および透明タブレット | |
TW200827787A (en) | Optical film with super low retardation and polarizer plate containing the same | |
JP2006030870A (ja) | 偏光板及び液晶表示装置 | |
JP2005018551A (ja) | 電磁波シールド機能を有するタッチパネル、およびそれに用いる透明積層フィルム | |
JPWO2006019086A1 (ja) | N3204pct | |
JP2006058322A (ja) | 偏光板及び液晶表示装置 | |
CN1381757A (zh) | 一种光学器件及液晶显示装置 | |
KR102532754B1 (ko) | 액정 표시 장치 | |
JP2006039472A (ja) | 偏光板及び液晶表示装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): CN JP KR US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2003782802 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020057005650 Country of ref document: KR |
|
ENP | Entry into the national phase |
Ref document number: 2006013967 Country of ref document: US Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10533561 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2004562051 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 20038A68266 Country of ref document: CN |
|
WWP | Wipo information: published in national office |
Ref document number: 1020057005650 Country of ref document: KR |
|
WWP | Wipo information: published in national office |
Ref document number: 2003782802 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 10533561 Country of ref document: US |