TWI291182B - Conductive film for touch panel and method for manufacturing - Google Patents

Abstract

The goal of this invention is to utilize a conductive polyethylene terephthalate (PET) film for touch panels that is small in shrinkage and dimensional change conductive film. The change conductive film of touching panel possesses the excellent high-temperature resistance and markedly excellent sliding resistance. This invention provides a conductive film for touch panels, its characteristic is that a base with at least a layer composed PET and a cured layer obtained by curing a crosslinkable substance and a conductive film formed on the base. The shrinkage of the base after heating at 150 DEG C for 1 hour is not more than 0.5% in both longitudinal direction (MD) and transverse direction (TD). Particularly, it is a conductive film for touch panels. The touch panel is obtained by attaching a transparent conductive film to a PET film base. The PET film has a shrinkage of not more than 0.5%, It is obtained by curing a crosslinkable substance on a PET film at 100 DEG C to 180 DEG C before attaching an inorganic transparent conductive film such as an ITO film to the PET film base by sputtering, etc.

Description

[Technical Field] The present invention is a conductive film for a touch panel used as a transparent conductive film of a touch panel (4), and a method for producing the same. Specifically, it relates to a touch surface (four) conductive film which is low in temperature even if it is high in temperature, and a method of manufacturing the same. [Prior Art] The transparent conductive film is used as an optical electrode of a touch panel (hereinafter may be referred to as τρ), an electrode of a liquid crystal display, or an electrode of an electroluminescence display. For example, in the touch panel of the resistive film type, generally, the @5' transparent solar conductive glass plate and the transparent conductive film are used as electrodes, and the transparent conductive glass plate is made of oxygen oil through the spacer. Tin (hereinafter also referred to as ΙΤ0) is adhered by sputtering or the like, and the transparent conductive film is adhered to a plastic film such as polyethylene terephthalate film by sputtering or the like (hereinafter may also be referred to as ΡΕΤ). Plastic film such as film). • The control panel is widely used, and it is placed on a display device such as a CRT^LCD. By pressing it on one side, it can be pressed with a finger or a pen, and can be used to input information, instructions, and commands. The step of patterning or hardening the silver paste is required for the transparent conductive film '' for the touch panel, and for this hardening, it must be maintained at a temperature of 120 C to 170 C for several minutes to several hours. However, although the bright point of the pET film is above 3GGT: the glass transition temperature is as low as right. c, and T is a crystalline resin, which is "extended". After the above temperature is applied, it is cooled to a temperature, and there is a problem that the film shrinks greatly. Therefore, in the case where the conductive film is warped or the counter electrode is ITO-attached glass, patterning occurs between the glass which is small in number due to the thermal expansion system 5 1291182, and which hardly changes in size even if heated. The problem of positional deviation of the electrodes. Further, since the touch panel is also used in a high-temperature environment such as in a car, the PET film has a problem of wrinkles or waviness due to repeated expansion and contraction. In recent years, touch panels have also been expected to increase in size, and due to such temperature changes, there have been problems in that the size is disordered or the positional deviation between the electrodes occurs. On the other hand, increasing the sliding resistance of the transparent conductive film has also become a major issue. The touch panel has a digital mode that only senses the opening of the finger touch-off, and can input the image or the text in a pen ratio such as a pen. In particular, in the analog method, since the input is made directly on the transparent conductive film by a pen or the like, the PET film having the elastic force is bent every time the input is performed, so the stress is applied to the IT0 attached to the surface thereof. Usually, a sliding test of more than 100,000 times of straight-line writing or writing is performed with a load of about 250 g. In the case of poor adhesion of ITO, due to repeated pen input, fine recording or peeling occurs, and the resistance value is large. The problem of the rise of the conductive function disappears, and in the case of good looseness, the stress caused by repeated sliding may also cause the same problem in rn&gt;. In recent years, this slidability is required to be tested at a load of 5 〇〇g, and is required to pass a test of 30,000 times. Further, a transparent conductive film having excellent sliding properties is required. In order to improve the sliding characteristics of this PET film with IT, various reviews were conducted. For example, in the Japanese Patent Laid-Open No. 2667680, the thickness of the film is 125# m. The film is ^ ^ ° and the film is thick and the thickness is "the degree of ι 之 ι Ε , , , , , , , , , , , , , , , On the 'Ultra Bodhisattva W's use of the squeaky squeaky, absorb the force applied by the pen input, so that !TO is not damaged' to improve the sliding characteristics. However, this 6 4 1291182 It does not necessarily meet the pen sliding of 300,000 times with a load of 500g, the next problem, the peeling of the adhesive layer, and the yellowing of the adhesive. The heat resistance or hygroscopicity of the adhesive is not good. The problem of the yttrium in a harsh environment and the ITO film which is formed as a single piece directly attached to the PET without being formed is complicated, and therefore the manufacturing process is complicated and expensive. Moreover, in order to improve the slidability Attempts to make IT〇 dense and high-strength. This method is performed by sputtering, after the amorphous film is added to the ruthenium film, and annealing is performed at a temperature of *C for several hours to several tens of hours to make the amorphous yttrium. It becomes crystallization ΙΤ0. Compared with the transparent conductive with amorphous ιτ〇 attached ί·film, the transparent conductive film to which the crystallization enthalpy adhered is preferred, but it does not meet all the conditions as a pen input. Moreover, since long-time annealing is required, transparency may be impaired or It is a problem that it is yellowish and becomes expensive. Moreover, after the ruthenium film is formed into a ruthenium layer, annealing at a temperature of around 15 (^) can make the heat shrinkage rate in the (5) direction 0^5%. In the following case, the IT layer itself becomes crystalline and has high strength. However, due to repeated sliding, the layer of tantalum may be peeled off from the ρΕτ film or, depending on the case, fine cracks may occur. Although the transparent conductive film having excellent slidability has been subjected to various reviews, it does not necessarily conform to the required sliding resistance type, and has a complicated structure or a complicated manufacturing process, and therefore has optical properties other than sacrificial sliding characteristics. Or a defect in which the cost rises. Moreover, the conductive film of the crucible must be prevented from being damaged by rubbing with a pen or a finger, preventing image deviation or preventing the occurrence of a Newton's ring. Like 7 1291182 4 Λ / month is clear or bright, also requires high light transmittance. In addition, the conductive film for TP, from the previous PEThM in order to prevent surface damage, in (4) the tree but this ultraviolet curing resin; The surface hardness is provided to prevent damage to the layer, and the thermal stability of the substrate is not improved, or the sliding of the conductive film is improved. SUMMARY OF THE INVENTION The object of the present invention is to completely solve the above-mentioned problems and achieve y. In other words, the object of the present invention is to provide a photovoltaic film for a touch panel which has a small dimensional change and excellent sliding characteristics even under a severe ring t, and a method for producing the same. In review, it has been found that a conductive film is a conductive film for a touch panel which is particularly excellent in sliding characteristics, and the conductive film is formed of at least a layer formed of a PET film, and a bridging substance. a conductive film is formed on the substrate of the hardened layer which has been hardened into a film; and the length direction (MD) and the width direction (TD) of the substrate after heating for 150 hours are 150 hours t; shrinkage rates are all below 5%. The inventor of the present invention contemplates a transparent conductive film composed of a PET film. In the case of heating, an inorganic oxide such as a butyl hydride having a linear expansion coefficient which is much smaller than that of an organic PET film is attached as a conductive film to the surface. Therefore, the expansion ratio or shrinkage ratio caused by the heat between the inorganic oxide and the PET film is not only after the heating process for the degree of curing of the silver paste, but also after the heating process of the high temperature environment. It will become the original film of warpage or wrinkles of conductive film 8;1291182,*, and due to the difference in expansion ratio or shrinkage caused by this heat, it becomes the main cause of the peeling of the conductive film from the film or the crack in the conductive film. The reason is that the conductivity is lowered or the electrode is ineffective. Further, even when the conductive film is not peeled off from the PET film or cracks are not generated, it is assumed that the interface between the inorganic compound such as ITO or the PET film may be residual due to the high heat treatment or the above conditions, and is used for the touch panel. In the case, if the sliding of the pen is repeated, peeling or cracking may occur. Such phenomena may have an adverse effect on slip resistance. According to this idea, a new discretion is obtained, which is to suppress the shrinkage and dimensional change caused by the heat of the substrate, and to stabilize the substrate by the hardened layer', which will significantly improve the transparent conductive film for the touch panel. The sliding characteristics 'end to the completion of the present invention. That is, the method for solving the above problems is as follows. <1> A conductive film for a touch panel, comprising: a layer having at least a layer formed of a polyethylene terephthalate film and a hardened layer in which a bridging material has been hardened into a film; The conductive film was formed; the shrinkage ratio in the longitudinal direction (MD) and the width direction (TD) of the substrate after heating at 150 ° C for 1 hour was 0.5% or less. <2> The conductive film for a touch panel according to the above, wherein - as the hardened layer, the base system has a hard layer in which the heat bridge material is hardened into a film. <3> The conductive film for a touch panel according to <2>, wherein the base system further comprises a hardened layer which has been hardened into a film by a bridging material of light or electron wires. <4> The conductive film for a touch panel described in <3>, wherein the base system is hardened into a bridge material by light or electron lines on both sides of the PET film layer. Hardened layer of film. The conductive film for a touch panel according to any one of the above aspects, wherein the conductive film is amorphous (0 indium tin oxide). (6) The conductive film for a touch panel according to any one of the above (1) to (5), wherein the conductive film is processed in a length direction (MD) and a width direction (TD) after being heated by 15 〇t in advance. The shrinkage ratio is 5% or less of the matrix, and the conductive film is attached. [7] The conductive film for a touch panel according to the above <6>, wherein at least one of the hardened layers is in a range of from 1 to 180. (The temperature between the two is obtained by heat-treating the pET film, or by heat-treating the ruthenium film at a temperature between loo: 18 (r), and then bridging the bridging material on at least one side of the ruthenium film. The conductive film for a touch panel according to the above <7>, wherein at least one of the hardened layers is heat-treated at a temperature of 100 Å to 180 Å. Or, after the heat treatment of the film is performed at a temperature between 10 ° C and 18 ° cc, and the PET film is cooled to room temperature, the bridging material is obtained by hardening at least one side of the PET film. <9> The conductive film for a touch panel according to the above <7>, wherein the hardened layer of at least one layer is at a temperature between 120 ° C and 180 ° C, and the pET film is used.

The heat treatment is carried out, or the PET film is heat-treated at a temperature between 12 CTC and 180 ° C, and then the bridging material is obtained by hardening at least one side of the PET film. <10> The conductive panel according to any one of the above-mentioned <1> to <9>, wherein the PET film is a biaxially stretched ρΕτ film. The conductive film for a touch panel described in <2>, wherein the thickness of the hardened layer of the bridging material hardened by heat is up to 5 # m. The conductive film for a touch panel according to the above <3>, wherein the surface of the conductive film opposite to the conductive film has a erroneous hardness of 3 hours or more. The conductive film for a touch panel according to any one of the above-mentioned items, wherein at least the 丨 layer of the hardened layer is a layer having an anti-glare function from 丨 to 川%. The conductive film for a touch panel according to any one of the above aspects, wherein the substrate to which the conductive film is attached is used as an anti-glare layer. The conductive film for a touch panel according to any one of the aspects of the present invention, wherein the surface of the conductive film corresponding to the first substrate of the substrate is further provided via a bonding layer. Two substrates. <16> A method for producing a conductive film for a touch panel, comprising: a substrate preparation step of preparing a substrate having at least a layer formed of a PET film, and a bridging material having been cured into a film. The shrinkage ratio of the hardened layer in the longitudinal direction (ME) and the width direction (TD) after heating at 150 ° C for 1 hour is 5%·5% or less; and the conductive film adhesion step is performed by attaching the conductive film The substrate prepared by the substrate preparation step; in the substrate preparation step, the pET film is heat treated at a temperature between 10 ° C and 180 ° C, or at a temperature between loot: 18 crc After the PET film is subjected to heat treatment, the bridging material is hardened on at least one of the 1291182's of the PET film to form a hardened layer of at least one layer to form a film. The method for producing a conductive film for a touch panel according to the above aspect, wherein the PET film is heat-treated at a temperature between 100 ° C and 180 ° C in the substrate preparation step. At the same time, or after heat treatment of the PET film at a temperature between 100 ° C and 180 ° C, and before the PET film is cooled to room temperature, the bridging material is hardened on at least one side of the PET film to at least The hard layer of one layer is formed by hardening a film. <18> The method for producing a conductive film for a touch panel according to the above <16>, wherein the substrate preparation step is performed on at least one side of the PET film, and the heat-bridged material is cured, and comprises 5 kg/cm 2 to A process in which the force of 50 kg/cm 2 is applied to the longitudinal direction (MD) and is hardened at a temperature in the range of Tc to 180 ° C. [Embodiment] Hereinafter, an embodiment of the present invention will be described. The conductive film for a touch panel of the present invention is formed by forming a conductive film on a substrate having at least a ΡΕτ film layer and a hardened layer in which a bridging material has been hardened into a film; and the substrate is heated at 150 t: (The longitudinal direction (film flow direction)) and the TD (width direction (film width direction)) are both 0.5% or less. The conductive film of the present invention has a PET film as a main component of the substrate. Transparency is used as a conductive film for touch panels. The transparency of the electric film of this month is not particularly limited, but it is very important for the transparency of the light, and the transmittance of visible light is suitable. More than 70%, more than 85% In addition to the transmittance of the substrate, the transparency is also 12 1291182. It varies according to the type, thickness or hardening condition of various bridging materials, the degree or thickness of oxidation or thickness of crystal, or the type of amorphous or amorphous. It is advisable to adjust all the factors of these changes to obtain high transparency. The PET film can also be deteriorated without impairing the properties such as transparency or heat resistance. Moreover, the film may also contain an anti-oxidant, (4) Additives added for various purposes such as line absorbers, colorants, and lubricants. In order to improve the adhesion between a curable substance adhering to the surface or a conductive film such as IT〇, it is often used to apply a corona treatment or a plasma. The thickness of the ruthenium film is not particularly limited, but it is used in the case of a ruthenium. Considering, it is preferable to use a film of thickness, especially a film having a thickness of 80 to 250/zm. When two sheets of PET are attached to improve the sliding property, two pieces of ρΕτ are applied in the case of applying the technology. The total thickness

It is preferably the above thickness. X The layer structure of the above-mentioned substrate is not particularly limited, and may have a single-hardened layer or a plurality of hardened layers, except for a hardened layer having at least a film layer and a bridge #10 biomass hardened into a film. Further, the hardened layer may be laminated on the side of the conductive film of the layer formed of the film of ρΕτ., laminated on the side opposite to the conductive film or laminated on both sides. The hardened layer in which the bridging material has been hardened into a film is hardened on the surface of the PET film. Since the PET film is thermally stable, even if the film is adhered to the film, the silver paste is cured at a temperature of 150 (the temperature of the temperature is hardened). s, since the dimensional change is small, the sliding resistance of the conductive film can be greatly improved. 13 4 1291182, The province is not particularly limited as a wooden bridge, and can be used by a conventional person, and can be used - a heat bridge material, such as a squat k Green Force u 2 — , I The external bridge of the wooden bridge material by the bridge material of light and the bridge material of the electron line, etc. as, for example, the thermal bridging property f, the bridging material by light and by Examples of the bridging material of the electron beam include a dimeric murine amine resin, an urethane resin, an urethane propylene fluorene tree θ, an acid alcohol resin, an acrylic resin, an anthrone resin, and an epoxy resin. A hardening type resin, etc., such as a eucalyptus, may be used, and two or more types may be mixed or two or more types may be mixed. For the purpose of curing, an initiator, a molecular φ amount adjusting agent, and the like are prepared, respectively. Bridged material used - For example, in the molecule, there are two or more acrylic or methyl acrylic acid double-bonded bridges! • Raw monomer, bridging monomer having two or more allyl groups in the molecule, and two molecules. A bridging monomer having two or more aromatic vinyl-based double bonds, or such an oligomer or a polymer. As a commercially available product, it is exemplified by having two or more acrylic or methacrylic double molecules in the molecule. The bridge-type monomer and the like are exemplified by: bisc〇at7 (8) repair (manufactured by Osaka Organic Chemical Industry Co., Ltd.), KAYARAD R-551 (manufactured by Sakamoto Chemical Co., Ltd.), ar〇nix j 5 (East Asia- Co., Ltd.), ARONIX M-210 (same), BP-4PA (

• Co-Prosperity Oil Co., Ltd.), BP-4EA (same), UVIMAR UVSA-1002 (manufactured by Mitsubishi Petrochemical Co., Ltd.), uvimar UVSA-2006 (same), etc. Further, examples of the bridging monomer having two or more allyl groups in the molecule include diallyl phthalate, diallyl terephthalate, and 14 1291182 j iso-n-decanoic acid. Allyl s, triallyl trimeric acid, triallyl-propyl cyanurate, diethylene glycol bisallyl carbonate, and the like. Further, as a bridging monomer having two or more aromatic vinyl double bonds in the molecule, divinylbenzene, diisopropenylbenzene 'divinyltoluene, trivinylbenzene, and diiso are mentioned. Propylene toluene, divinyl naphthalene, diisopropenyl naphthalene, 4,4, divinylbiphenyl, 4,4, diisopropenylbiphenyl, and the like. Further, among the bridging materials, examples of the oligomer include the above-mentioned bridging monomer oligomer, and the degree of polymerization is usually 2 to 1,000, more preferably 2 to 1 degree. Further, among the bridging materials, examples of the polymer include a polyether polyurethane urethane having a double-bonded ethylenic unsaturated group derived from acrylic acid or methacrylic acid at the molecular terminal, and a polyacetic acid urethane. Ester, polycaprolactone polyurethane or the like. And can be used in the epoxy acrylate prepolymer to add oxoxane coupling 4, the amount of oxane coupling agent is generally added 〇.5~〗 〖% by weight, preferably _ with epoxy, amine, sulfur Alcohol base. And as a urethane vinegar resin, it should be used! A polyol compound having two or more = hydroxyl groups in the molecule, which is hardened by a polyfunctional isocyanate compound. The polyhydric alcohol compound may, for example, be a polyacrylic acid such as ethylene glycol or diethylene glycol, an epoxy resin denatured polyol, a polyacetate polyol, an ethylene-ethylidene alcohol copolymer, or a phenoxy group. Resin or the like. In addition, when bridging materials are used as thermal bridging materials, other monomers, oligomers or polymers having thermal polymerization properties may be added to 1291182. In this case, if the ratio of the thermal bridging material is changed to a film, the ratio thereof is at least 2% by weight to be: 5% by weight or more and more preferably 50% by weight or more. 1 In the case of a material having a weight of 3° and used as a heat bridge material, an initiator is used. (3) Field violence t:: This radical polymerization: initiator, for example, peroxide, azo port more specific ^ 'may be: benzoyl peroxide, L_ peroxy Z benzoic acid vinegar, The ruthenium radical polymerization initiator such as azobisisobutyronitrile may be used alone or in combination of two or more. The amount of the radical polymerization initiator added is G to the heat bridge material _ reset portion. 2 weight parts, more preferably 〇·_~β quantity part. On the other hand, 'the bridging substance is used as a light bridging substance such as ultraviolet light, and in other cases, I add photopolymerization to other monomers, oligomers or polymerization. In this case, if the ratio of the light bridging material is small, a film having a strong film cannot be obtained, and the ratio thereof must be at least 2% by weight or more, preferably more than 5% by weight, more preferably 5% by weight or more. In addition, a photopolymerization initiator may be added as a photo-branching material. Examples of the photopolymerization initiator include 1-cyclohexyl phenyl ketone ' ψ 笨 笨 笨 笨 _ , acetophenone, dioxin, oxab _ Μ benzophenone, scorpion, onion, Phenylamine, carbenol, acetophenone, 4-gas-float (10), one 曱, ', '4, dimethoxy benzophenone, 4-4, monoamine diphenyl hydrazine Outline, come and leave yeast 1, benzoate propyl _, benzoin ethyl ether 16 1291182; Λ 4 4 , benzoquinone dimercapto _, 1 (4-isopropylphenyl)-2, —2-methylpropanone 1 ketone 2 L-based 2-methyl-phenylpropanone _ 1 -ketone, thioxanthone-based compound, 2-mercapto-1-[4-(methylthio)benzene Keb 2-morpholinyl-propane-propanone, 2,4,6-trimethylphenylnonyldiphenyl-phosphorus oxide, etc. These photopolymerization initiators may be used alone or in combination 2 The amount of the photopolymerization initiator added is 0 to 5 by weight, and is preferably 〇'weight portion, more preferably 〇2~". Further, as the photopolymerization initiator, a photo sensitizer (polymerization accelerator) such as an amine compound may be used in combination. The bridging material to be used in the present invention may be formulated with a reactive diluent, an anti-aging agent, a polymerization inhibiting agent, a smoothing agent, a surfactant, and the like, in addition to the solvent to be added as needed. These curable resins may be used in combination or in a plurality of layers, and a hardened layer of light such as ultraviolet rays may be laminated on the heat-hardened layer. From the viewpoint of transparency and the like, an acrylic or urethane acrylic or an oxime resin is suitably used. In the usual solution, a composition obtained by adding various additives such as a charge preventing agent or a polymerization initiator is diluted and adjusted to have a bridging resin solid content of 20 to 80% by weight. The thickness of the layer after the hardening is not particularly limited, but it is preferably 〇1 Am or more from the viewpoint of thermal stability and slidability. Also, 仗 productive considerations,! The layer is preferably 1 Å/m or less, more preferably the following, particularly in the case of a thermosetting hardenable layer, and particularly preferably 5 Å or less from the viewpoint of productivity required for hardening. Fig. 1 is a view showing a preferred configuration of a conductive film for a touch panel of the present invention. Figure 17 1291182

• 1A is a conductive film having a substrate 1 and a conductive film 2, and the substrate is entangled on one side of the layer 3 formed of the pET-film, and a hardened layer 4' having a bridging substance hardened into a film is formed thereon. An example of the conductive film 2. Further, in Fig. iB, the substrate 1 is formed on one side of the layer 3 formed of the PET film, and the hardened layer 4' in which the bridging material has been hardened into a film is formed on the opposite side of the layer 3 formed of the PET film. - An example of electrical layer 2. In this manner, the hardened layer may be provided on the side of the conductive film of the layer formed of the PET film, on the side opposite to the conductive film, or on both sides. In either case, as a hardened layer, the hardened layer can be hardened into a film, the hardened layer, the hardened layer which has been hardened by the bridge of light, and the hardened layer by the electron beam. The hardened layer of the film formation or the like is appropriately selected and used. As the hardened layer, the layer 3 formed of the PET film has a hardened layer in which a bridging material is hardened by heat, and can be produced in a simplified process as described later in detail to obtain excellent sliding resistance. In view of the point that the hardened layer 4 of FIG. 1C, D, E & F is plural, for example, in FIG. 1C and FIG. 1D, it is blunt as a hardened layer, and has a heat-bridged substance hardened. The hardened layer serves as a thermosetting layer, and has a structure in which a hardened layer in which a light or electron bridge bridging material has been hardened into a film. &quot; As a preferred aspect of the conductive film of the present invention, there is exemplified a conductive film comprising a hardened layer in which a thermally bridged substance has been hardened into a film, and having at least one layer by light or electron beam The bridging material has hardened into a hardened layer of the film. As the hardened layer, a hardened layer in which a bridging material is hard-formed by heat is used, and it is preferable from the viewpoint of simplifying the process and obtaining excellent sliding resistance, but it is necessary to prevent damage such as Tp. , 18 1291182 Only the thermosetting resin, which has the anti-damage effect of the conductive film for the touch surface of the crucible, is still insufficient in hardness. As a general case, when the τρ electrode is used, it is rubbed with a finger or a pen or rubbed with a pen. Therefore, in order to be hard to damage, the opposite surface (touch surface) of the conductive film such as the ruthenium layer requires a high hardness of 3 Η or more. Usually, the thickness of the thermal bridging material is usually limited to 5 or 2 厚度, and it is difficult to achieve the above hardness as long as the economically unfavorable long-term secondary hardening is not performed or the film thickness is made thick. Here, the hardening by the bridge of light or electron wire | 'The hardness of the knot can be obtained in a short time, so for example: in the figure... and!), mainly as a low shrinkage and use: a hardened layer of heat stabilization The hardened layer 4a is a thermosetting resin layer having a thickness of 5 or less and a hardened layer which functions as a damage preventing layer for obtaining surface hardness, and the hardened layer 4b has a high curing speed and a sufficient hardness by light or electron beam. The bridging material has been hardened into a hardened layer of the film (especially an ultraviolet curable resin layer or an electron beam hardened resin layer), and at the same time, it is productive and has a large hardness, and the thermal stability or the sliding resistance is excellent. Suitable from the viewpoint of preventing damage, the above-mentioned bridging by light or electron wires! The hardened layer in which the bioshell has been hardened into a film is preferably provided at least in contrast to the electroconductive film 2 of the layer 3 formed by the film. In the present invention, it is said that the hardened layer 43 of the bridge is formed on one side of the layer 3 formed by the film to achieve heat stabilization, and then it is preferably formed. The layer of the optical or electronic wire bridge is hardened. The thermosetting layer 4a and the optical or electron hardening layer 4b are formed on the touch surface, and the conductive film is directly formed on the PET layer 3. Fig. 1 D-type thermosetting layer 4a and light Or an electron hardening layer 4b is formed on both sides of the PET layer 3, and a conductive film 2 is formed on the thermosetting layer. Fig. m is formed on at least two 19:1291182 λ* -4 sides to form a bismuth V. , Μ, s When it is used as an electrode, it is difficult to cause warpage. For example, it is preferable that the laminated film forms a step of forming ITO or the like, or that the treatment U is less likely to cause scratches, etc. External use of the p, 曰 ^, , horse to improve visibility, can also make the hardened layer of 4a or 4b into a hardened layer that also has anti-glare effect. Furthermore, as described, the hardened layer by thermal bridge For the purpose of preventing damage slightly, the touch surface provided on the side opposite to the ITO surface is not used. In the conventional TP electrode, a hardened layer bridged by light is formed on the touch surface of τρ. Further, from the viewpoint of further improving the sliding resistance, it is preferable to further provide a layer. Further, Fig. 1A and Fig. 1F show a hardened layer which is a hardened layer 4a and has a heat-bridged substance 6 which is cured to form a film, and the hardened layers 4b and 4c have a hardening of a light or electron bridge bridging material to form a film. The composition of the layer, etc. The servant and the core layer are formed on both sides of the layer formed by the pET film, and the touch surface obtains a hardness of 3H or more, which can impart anti-Newton ring performance, and the two masks _ have a hardened layer. The mechanical strength balance is achieved, and it is difficult to warp, and the both surfaces are 3H or more. In the process or the treatment, scratches and the like are less likely to occur, and the most suitable configuration is obtained. In FIG. 1E and FIG. 1F, first, in the PET film layer 3, the hardened layer of the bridge by heat is applied, and dried and hardened by l ° ° C to 18 (TC). Thereafter, • on the buckle layer Or a surface coated with a hook layer to form a hardened layer bridged by light or an electron beam, and secondly, a hardened layer may be formed on the opposite side. In this case, in order to make the touch surface of the TP 3H or more, It is advisable to select the type of resin, thickness or bridging degree. The hardness of the surface coated with a conductive film such as ITO is not necessary 3H, but in view of the point that the process or the treatment may be damaged, 20 1291182 type, thickness, bridging can be tested. The degree of mechanical strength of the two sides is considered, and the resin is selected on both sides and the hardened layer is selected. The two sides have the same degree of thermal % expansion coefficient to achieve the balance of strength, and it is not easy to wrinkle, text or crack when exposed to high heat. From the point of view of τρ, this Figure 1E and Figure 1F are the best composition. The laminated thermal bridging material has hardened into a hardened layer of the film, and is bridged by light or electron wires. a hardened layer of a hardened film In this case, the total thickness of the layer to be overcoated may be determined according to the required thickness, and the general 3H degree is preferably 2/Zm to 1 〇/^m. From the viewpoint of productivity, low shrinkage, stability, and In general, it is judged that the thermosetting resin layer is 〇.5 core 〜5_, and the ultraviolet ray hardening layer or the like applied thereto is preferably used to prevent image deviation, which is required for the conductive film of 7 TP. In order to prevent reflections and prevent the occurrence of Newton's rings, etc., it is possible to apply various treatments or apply treatments to at least one of the hardened layers (in the case of a plurality of hardened layers). The purpose of the method is to further add a heat or ultraviolet curing resin to the substrate. The hardened layer of the paralysis on the lower side of the surface of the conductive film can be formed, for example, as shown in FIG. Layer 4b, which has the effect of anti-British clothing. Specifically, in order to make the 霾 value of 0.5 to 3%, it can be used in the resin component of the funeral, the bridge set by the hunting or the electron line, and contains acrylic particles. Inorganic, such as Wei Qiang particles or bismuth particles The particle is hardened. It is blended into a small 霾 value (2). The anti-Newton effect is small. In large cases, the image may be biased. The entanglement value of this layer should be adjusted to 0.5% to 21 1291182 « Λ Λ 3% From the point of view of achieving the balance between anti-Newtonian and preventing image deviation, it is appropriate to use a particle having a different diameter than a particle having a uniform particle size. Specifically, it is preferable to mix it; It is better to mix particles of different diameters in the m range into the range of 2~5/zm. The anti-glare is used in the external display. The anti-glare effect - the situation is as follows: 4, 4 嶙, can control the 霾 value, select = the sum of the 霾. In general, the 霾 value can be selected between 2% and 2〇%. The raccoon value is obtained by mixing the resin component of the bridge with acrylic particles or bismuth particles. In order to obtain the target enthalpy, it is preferable to adjust the resin and the enamel which are hardened by the resin of the optical or electronic bridge as the same enthalpy value, but it is preferable from the viewpoint of reducing the kind of the resin which obtains the hardened layer. Further, it is preferable that at least the tantalum layer of the hardened layer is a layer having an anti-glare function of from 霾 to 20%. Further, the hardened layer on the opposite side to the conductive film of the PET film is preferably made to contain ruthenium particles or the like in order to have an anti-glare or prevent Newton's ring effect. In the case of a clear coating, it is preferable that the ruthenium of the particles of the enamel or the acrylic acid is not contained in any of the hardened layers. In this case, it is also possible to prevent the Newton's ring from occurring, and the hardened layer on the lower side of the ITO layer may contain strontium or propionic acid particles, and the enthalpy value should be adjusted to 2% or less. The ruthenium particles are amorphous and porous. As a representative example, silicone rubber can be mentioned. A representative example of the organic particles is acrylic particles. The average particle diameter of these is usually 30 #m or less, more preferably 2 to 15//111, and the blending ratio is preferably 〇1 to 1〇 by weight of the curable resin 100 parts by weight. Further, the layer which is in contact with the conductive film of the substrate is an anti-glare 22 4 I291J82 light layer or a reverse Newton ring layer containing particles, and the sliding resistance can be further improved. In other words, when the effect of preventing the Newton's ring is applied, the hardened layer containing particles such as ruthenium may be attached. If the conductive material is formed on the upper portion, and the hardened layer containing the particles is located under the conductive film, the sliding can be improved. Sex, so it is appropriate. The material of the conductive film of the present invention is such that the shrinkage ratio in the longitudinal direction (MD) and the width direction (TD) of the substrate after heating at 15 Torr for 1 hour is 0.5% or less. Here, "the shrinkage ratio in the longitudinal direction (_MD) and the width direction (TD) after heating at 15 °C for 1 hour" is obtained by taking the substrate at room temperature, heating it to 150 °C, and maintaining it. ! After the hour, return to the room temperature and regain the shrinkage measured by the size. In order to comply with the dimensional stability of heat or the sliding test of 25 〇g and 10,000 times of TP, if the MD and TD are used, the conductive film of the present invention is 15 〇. The heat shrinkage rate of bismuth is 0.5% or less, but in order to meet the sliding test of 5〇〇g and 30,000 times, the shrinkage of MD and TD should be less than %4%, at 〇·3%. The following is better. The method of lowering the shrinkage is not particularly limited, but it is necessary to reduce the shrinkage of the substrate before the conductive film is attached. Further, at least the hardened layer of the tantalum layer is subjected to heat treatment of the PET film at a temperature of from 1 〇〇 ° to 180 ° (or between, or at a temperature between 100 ° C and 180 ° C, and the pET film is subjected to a temperature of from 100 ° C to 180 ° C. After the heat treatment, the bridging material is obtained by hardening at least one side of the PET film, and it is preferable to suppress the shrinkage rate of the PET film and stabilize it. The heat treatment is preferably 12 Å or more, 120 ° C to 160 ° C. The temperature between the two is particularly good. In order to crystallize ιτο after the adhesion of the IT layer, it is known that the film is annealed at a temperature around 15 〇r 23 1291182. This is a transparent conductive film which also contains a right-changing layer, MD And the heat shrinkage rate in the TD direction can be n &lt; 0 / thousand "hooks 〇 · 5% or less, but due to the thermal properties of conductive films such as IT 与 and PET films, etc., this annealing treatment may be The TO layer ', the residual stress between the organic interface' is slipped by the pen or the like, and the layer is peeled off to cause cracks in the layer.

The PET film 'used from the material of the layer formed of the ρ·ρ T film as the substrate can be produced by a conventional method such as a melt extrusion method. Smooth from surface

From the viewpoints of degree, transparency, mechanical strength, heat resistance, etc., the degree of deterioration and the manufacturing method are selected. From this point of view, it is preferable that the PET film produced by biaxial stretching is preferable. The biaxially stretched film system extends vertically and horizontally, and is generally shrunk when heated. According to the method of the present invention, even if it is a biaxially stretched film, the shrinkage ratio can be kept low, and it is preferable from the viewpoint of stability. On the surface of the PET film thus produced, a coating which is useful for improving the surface hardness and preventing the deviation as a touch panel or preventing reflection is often applied, and therefore it is also possible to use a single-sided or double-sided coating for easy handling. As the easy-to-treat treatment, a conventional method such as a corona discharge, an ultraviolet ray irradiation, a plasma treatment, a _(four) treatment, or a primer treatment can be used. The coating agent which is an easy-to-adhere layer for the priming treatment is not particularly limited as long as it has such an effect, and it is known to apply, for example, a polyester polymer or an acrylic polymer. This layer may also contain fine particles of ruthenium or the like as a sliding material. The contraction rate of 15 (rc, hr) of the above-mentioned biaxially stretched PET film is usually MD (々丨L moving direction) of 1·〇~1.8% ' TD (transverse direction) is 〇1~. In order to do this, hardening is not provided. In the state of the layer, the shrinkage ratio is reduced, and the manufactured biaxially stretched PET film can be continuously applied with a tension of 2 kg/cm 2 to 24 4 1291182 4 * 50 kg/cm 2 on one side, to 1 〇〇. (: to 18 (: A method of performing heat treatment; a method in which the PET film is wound into a roll, and the roll is placed in a furnace or the like at a temperature of around 150 ° C; and both methods are performed. In the conductive film of the present invention, a PET film which has been subjected to a low shrinkage treatment by the above method is prepared in advance, and the PET film may be laminated on the cured layer. However, the shrinkage ratio of the present invention is obtained by performing two shrinkage treatments in advance. The pET film requires a long time of treatment, which causes a problem in cost. The 15 (rc, ! hour shrinkage ratio is 0.5% or more, and the biaxially stretched film which has not been subjected to low shrinkage treatment is used as a material, and is simultaneously or continuously on the production line. a step of laminating a low shrinkage process and a thermosetting layer, It is preferable from the viewpoint of cost and improvement of the sliding resistance as a case of the conductive film. In a preferred embodiment of the present invention, the hardened layer of the bridging material which has been hardened into a film can be used for the PET from the roll shape. The film is continuously supplied with a pET film while applying a stress of 50 kg/cm 2 of 2 kg/cm 2 s on one side, by a wafer coater, a reverse coater, a gravure coater, a micro gravure coater, a spray coater, Slot coating machine, roll coating machine, screen printing, etc., coating bridging materials, bridging materials are hot bridging materials, by setting 1 〇〇 ° (: to 18 〇 1 furnace, so It is made by hardening and coiling, etc. At this time, it is 100. (: ~180. (: temperature, hardening of bridging material and heat treatment of PET film. In terms of productivity, it is usually appropriate to divide the furnace in i The furnace can be passed through 60 minutes. However, the furnace can be divided into several chambers, but the temperature can be adjusted to suppress the generation of bubbles, improve the hardening speed, and improve the smoothness of the cured film. In this method, it is not necessary to heat-treat the PET film in advance. Low shrinkage, which simplifies the point of 25 1291182 in the process It is more suitable. Moreover, the base system of the heat treatment of the PET film and the hardening layer hardening is also good. "In order to replace the thermal bridging material, the coated bridging material first makes the hunting by light bridging (for example) ··UV bridging property) or hardening of the bridging material by the electron beam to improve the thermal stability of the PET film, the same as the thermal bridging material. 'Before passing the furnace, apply the bridging material first, and set it to loot:~ 18 (After the furnace of TC, it is cured by ultraviolet rays or the like, or by setting it at 1 () (rc~18 (after rc furnace, cooling, coating of bridging material, by setting at 2 (rc~13 (rc degree) After the furnace is dried, it is made by irradiating ultraviolet rays or the like to harden it. For the purpose of the above-mentioned stabilization of the PET film, for example, when the hardness is raised to 311 or the like, and the material bridged by the light or the electron beam is applied and hardened, a conventional method can be employed. For example, a UV-curable resin is coated with a PET film by a gravure coater, dried, and irradiated with ultraviolet rays to harden it. The curing conditions of the optical bridging material include ultraviolet rays having a wavelength in the range of 2 〜 to 500 nm, and more preferably 〇丨 seconds or more, more preferably 〇 5 to 6 〇 seconds. Furthermore, the total amount of the irradiation amount is usually 3 〇 to 5, and the squeaking is 2, and as the light source, a low-pressure mercury lamp, a high-pressure mercury lamp, a carbon arc, a metal illuminating lamp, a mercury discharge lamp, a tungsten lamp can be used. , tooth lamp, sodium discharge tube, xenon discharge tube, and the like. The uranium shrinkage rate can be controlled by the tension of the pET film when the curable resin is applied, the furnace temperature, the hardening speed, and the like. The substrate having a low shrinkage ratio thus obtained is adhered to a conductive material by a method such as sputtering to form a conductive film, and a conductive film having a low shrink film as a base material can be obtained. In the case where the single side of the PET film has a hardened layer, the conductive material may be attached to either the surface on the side where the hardened layer is provided and the surface on the side where the hardened layer is not provided. As a method of forming a conductive film, any of conventional techniques such as a vacuum vapor deposition method, a lining method, and an ion plating method can be used, but from the viewpoint of uniformity of the film or adhesion of the film to the PET substrate, The film is formed by sputtering. The temperature at which the sputtering method is carried out is not particularly limited as long as it can impart a resistance value suitable for TP, but 6 〇 t: 〜20 (TC is preferable. In order to sufficiently oxidize the IT ruthenium film, the ι 〇 〇 film is promoted. Adhesiveness, 6Gt: preferably above, better &amp; (8). c or more. If 2(8).c or more, the oligomer remaining in the PET film will precipitate, making it white and turbid, which is not suitable. In the case of a high temperature, it is also possible to produce a koji, but the pET film which is stabilized by the thermosetting resin of the present invention also has a feature of not causing surface curvature. Further, the film material for conductivity is not particularly limited. For example, metal oxides such as tin oxide, indium tin oxide (called IT〇), tin oxide such as antimony, tin fluoride oxide, and zinc oxide may be used. Gold, silver, platinum, palladium, and copper may also be used. And aluminum, nickel, chromium, titanium, cobalt, tin, or a mixture of these or the like, and the thickness of the 'electric thin film' is not particularly limited as long as it can impart conductivity, but may be 5 Å or more. If it is too thin, the surface resistance value becomes high, and it is used as an electrode of tantalum. ^_Ω/□ or more, it is difficult to be a good performance film with a good 'electricity. On the other hand, if it is too thick, the transparency will be lowered, so the suitable thickness is 100 to 2000 Å. As a conductive material, From the viewpoint of the conductivity of the material, it is preferable to use 271 1291182 4 4 to sputter the ITO attacher, but the ITO is generally amorphous at the time of adhesion. In order to improve the scratch resistance and the sliding resistance, Environmental stability, it is known that the heat treatment is performed as described above to crystallize ruthenium. In the case of a conductive film requiring high reliability, the crystallization treatment is increased, but the crystallization treatment is carried out at a high temperature for 1 to several tens of hours. Further, the ruthenium film is expensive, and the slidability is not necessarily sufficient. The conductive film using the low-shrinkage substrate of the present invention can achieve excellent slidability even when amorphous enamel which is conventionally considered to have poor slidability is used. Further, in the case of using a conductive film of crystallized yttrium, the sliding resistance is also improved. In the case of using a conductive film of crystallization ruthenium, the sliding resistance is not necessarily sufficient, possibly because of the heat used for crystallization of ruthenium. However, although the strength or compactness of the crucible is increased, the PET film expands and contracts due to the application of heat, and since the expansion ratio and the shrinkage ratio of the ITO and the PET film are different, a large stress remains in the ITO layer. Any one of amorphous ITO and some or almost all of the crystalline ITO can be used in the present invention, but from the viewpoint of not requiring crystallization treatment and reducing cost, the advantage of using amorphous ITO is very large. On the opposite side of the PET film, if a high refractive material is adhered and a low refractive material is attached thereto, a highly reflective conductive film can be formed. The high refractive material can be vapor deposited or sputtered. Titanium oxide or zirconium oxide is attached, or these particles are contained in a material hardened by ultraviolet rays or heat to be hardened and adhered. The low refractive material can be deposited by vapor deposition or sputtering to adhere Si Ox (X = 1 to 2) or the like of the dielectric body shown below, and the fluorine resin can be cured by heat or ultraviolet rays. This layer for low reflection is applied to either side of the PET film or can be applied to both sides for further low reflection 28 1291182. In recent years, the demand for high transmittance 2TP is high, and it is suitable for use in forming a reflection preventing layer. It may be preferable to form a transparent dielectric film on the conductive film to further improve transparency and scratch resistance. The dielectric film is preferably smaller than the refractive index of the conductive film, and usually has a refractive index of 13 to 18, and is preferably used in the case where SiOx is relatively inexpensive. These materials can be used in combination of two or more kinds. The film thickness of the dielectric body is not particularly limited, but is usually i(9) to side A, and more preferably 鸠 to 1500A. If it is too thin, it is difficult to obtain a continuous film, and if it is too thick, conductivity or transparency is deteriorated, and cracks are likely to occur. Further, when the conductive film is used in a display device or the like, fingerprints or dirt may be generated on the surface thereof during processing or use. In order to solve this problem, it is also possible to (4) form the opposite outermost layer of the surface of the conductive film to adhere the waterproof or antifouling layer. As a material having such an effect, for example, a ruthenium-containing compound consisting of: δ containing dimethyl (tetra) oxy- and/or methyl-diene (tetra) oxygen: δ; Fluoride is not used alone or in combination with sulphuric acid, such as fluorinated eucalyptus « &amp; Jil, fluorinated with difluoroethylene, etc. The formation method of these is not particularly limited. Depending on the material, the coating method/vacuum evaporation method, the money method, the holding method, the Gongwang old, the Yangyi, _, 4 may be employed. The thickness of the treatment layer is not particularly limited to 疋 '通# should be 1 〇〇Α to lL ^ 八 to 50 &quot; This treatment can also be combined with two types, and it is more efficient to use only the yoke right in combination with the curable resin. In the above description, the conductive film of the present invention has good slidability, and the substrate may be used as the first substrate, and the surface of the substrate opposite to the conductive film of the M ^ ^ ^ substrate may be further advanced via the subsequent layer. Second substrate. Here, it is not limited to 29 1291182 〇: base body, and the second base body can also improve the slidability by the method of the above-mentioned method of making the heat shrinkage rate low. It is also preferable to use only the first substrate *, , -, , and "', but the method of the present invention is used to make both substrates low-shrinking', and the sliding resistance effect is increased.

:: The composition of the second substrate may be, for example, a transparent adhesive layer or a transparent substrate on the other side of the low-shrinkage matrix on which the front film is formed. The bonding is performed on the transparent substrate, and the adhesive layer is disposed thereon, and the low-shrinkage substrate on which the conductive film is formed is bonded thereto, or the adhesive layer is provided on the low-shrinkage substrate on which the conductive film is formed. Here, the transparent substrate can be attached. From the viewpoint that the film base can be formed into a roll shape and the adhesive layer is continuously formed, it is advantageous to provide an adhesive layer on the low shrinkage substrate on the production surface. Moreover, for example, a conductive film may be disposed on the substrate after the second transparent substrate is bonded to the first substrate of the low shrinkage via the transparent adhesive layer to a total thickness of 4 〇 to 4 (four). . The adhesive can be used without any particular limitation, and may be, for example, an acrylic adhesive n-based adhesive or a rubber-based «#丨. From the viewpoint of improving the scratch resistance and the dot characteristics of the t-retardant film, the elastic modulus should be set in the range of 1χ1〇5 to ixi〇7d%/cm2, and the thickness should be set to K1/zm or more, usually set at 5 The range of ~l〇〇//m. If the elastic modulus is less than lxl05dyn/cm2, since the adhesive layer is inelastic, the pressure is easily deformed, and unevenness is generated in the substrate or even the conductive film, or the adhesive is the same as overflowing from the cut surface, and the abrasion resistance is reduced. Enhancement of sex and management characteristics. On the other hand, the elastic system 30 1291182 • &lt; If the number exceeds lxl07dyn/cm, the adhesive layer becomes hard, and the cushioning effect cannot be expected. 'Because it cannot improve the scratch resistance and the spotting characteristics, it cannot be expected to fit: Effect. Moreover, if the thickness of the adhesive layer is not full, the effect of the adhesive layer is still not improved, and the scratching property and the dot characteristics cannot be improved, and the effect of the bonding cannot be expected. Furthermore, if the money is thick, it will break the transparency. Or, in the formation of the adhesive layer or the cooperation of the transparent substrate, it is difficult to obtain good results on the cost side. A second substrate having a structure of a second substrate adhered via an adhesive layer: flexibility is also required after bonding, and if the plastic film is not particularly required to be flexible, the glass is used. Plate, film or plate plastic. In the case where the moon base is a plastic film, the above-mentioned low-shrink film or other plastic film may be used; as a specific material, it may be exemplified by polyimine, poly(tetra), and poly.

Key squama, Jurui Gfc, X-man S, propylene, polyacrylamide, polyacrylic acid, ethyl phthalocyanine, polyarylate, polyfluorene, borneol, etc. The borneol lanthanum yoke 3 has a polymer obtained by subjecting a monomer having a norbornene structure and other polymerizable monomers added as needed to ring-opening polymerization or additional polymerization, which can be exemplified: Japan Z. The company's non-polar borneol rare two of the business ασ name round. ZE〇NEX4ZE〇NOR, JSR shares limited two division of polar borneol thin polymer product name: surgery (10), three companies, soil H Μ A The product name of the product is: ABEL, perhaps the product name developed by Guoyi Company: 7 I, as mentioned here, contains a polymer containing a borneol-based structure. == The factory of the second moon-crossing body to which the composition of the substrate is bonded via the adhesive layer is preferably in the range of 2 to 300 m. If it is thinner than 2", the 31:291182 • * method produces mechanical strength and lacks the meaning of making a bonded structure. This substrate is made into a roll shape, coated with an adhesive layer, or subjected to hard coating treatment as described later. In the case of work, not only will it be accompanied by difficulties, but also wrinkles may be applied to the fit. From this point of view, the thickness is preferably 1 〇# m or more, and more preferably 2 0 // m or more. If it is 3 〇〇 or more, it is made into a roll shape. In the case of a roll-to-fold, it is not only difficult to work continuously, but also cannot be used because of the residual crimp. From this viewpoint, the thickness is preferably 250 #m or less, more preferably 23 () / Ζίη or less. As described above, the present invention is The substrate containing the PET film was heated at a temperature of 2 rc for 2 hours, and the MD and TD were both 5% or less in order to obtain a conductive film which was used as an electrode of ruthenium. Even if the manufacturing process is exposed to high temperatures, warpage does not occur, the position of the electrode is less disordered, and the sliding resistance is extremely improved. In particular, the bridge resin is made by heat treatment on one side at a temperature of loot to 18 CTC. Hardened to the base of the PET film The conductive film obtained by adhering the conductive film is extremely excellent in the above-described slidability. The method for producing a conductive film for a touch panel of the present invention has a substrate preparation step for preparing a substrate having at least a substrate. The layer formed of the PET film and the hardened layer in which the bridging material has been hardened into a film, and the shrinkage ratios in the length direction (MD) and the width direction (TD) after being heated for 1 hour at 15 Torr are all 〇 5% or less; and a conductive film adhesion step of adhering the conductive film to the substrate prepared by the substrate preparation step; and performing the pET film at a temperature between 100 C and 180 ° C in the substrate preparation step At the same time of heat treatment, or at a temperature of 10 (TC to 18 (temperature between TC, after the heat treatment of the PET film, the bridging material is hardened on at least one side of the PET film, and at least one layer of the hardened layer is made by 32 1291182 Μ * Λ It is formed by hardening a film. According to the manufacturing method of the present invention, a conductive film can be obtained which does not cause warpage even when the manufacturing process is exposed to a high temperature, has small disturbance of electrode position, and is resistant to sliding. Extremely improved. The most effective method is to apply a heat-bridge type resin to a PET film, and keep it at a temperature of 100 ° C to 180 ° C for several minutes to several hours to dry and harden it. It is possible to simultaneously achieve the dimensional stability and thermal stability of the PET film in one step, and to produce a conductive film having excellent slidability. The process is two steps, but it may be 100 ° C to 180 ° C in advance. The PET film is subjected to heat treatment, and is coated with a resin bridging by heat, light or electrons to be hardened. The thus obtained bridging material has a hardened PET film, and thereafter, a bridging type hardened layer is further laminated in accordance with the purpose. A conductive film such as ITO is adhered to the PET film in which the hardened layer is laminated. In the present invention, before the inorganic layer of ITO or the like is adhered, it is necessary to reduce the shrinkage rate of the PET film with respect to heat and to stabilize it. Further, in the substrate preparation step, after the PET film is heat-treated at a temperature between 100 ° C and 180 ° C, and the PET film is cooled to room temperature, the bridging material is allowed to be in the PET film. A method of forming at least one surface of a hardened layer to form a film by hardening at least one layer of the hardened layer can easily produce a conductive film having excellent sliding resistance. In particular, by using a biaxially stretched PET film which is not subjected to a low shrinkage treatment, the PET film is heat-treated at a temperature between 100 ° C and 180 ° C, and a hardened layer hardened by heat is bridged in the aforementioned PET. At least one surface of the film is formed by hardening, and an inexpensive material can be used, and it is not necessary to carry out the process of treating the PET film by heat 33 1291182 in advance, and it is possible to produce a conductive film which is extremely excellent in sliding resistance. The invention is more specifically described below by way of examples. (Example 1) One side of a PET film (8,300, manufactured by Toyobo Co., Ltd.) having a thickness of 188 # ^ extending in two directions was continuously supplied on a roll at a tension of 1 〇 kg/cm 2 , and an acrylic resin was used as a gravure coater. (U.S. Chemical Co., Ltd. U_230) 100 heavy summer portion and hardener (CORONET L manufactured by Japan Polyurethane Co., Ltd.) 30 parts by weight of a solution dissolved in a toluene 1 〇〇 weight portion, and coated to a thickness of a coating layer after drying 2/zni. Φ One side is continuously supplied to a drying furnace composed of four chambers each set at 120 ° C, 140 c, 150 ° c, and 130 ° C, 5 m long, at a speed of 5 m/min, while drying, while making acrylic The resin is hardened. The obtained film was designated as film A1. On the opposite side of the coated surface of the film A1, an atmosphere of 溅·〇〇4τ〇η composed of argon gas 8〇% and oxygen 2〇% can be continuously supplied to the film A1 by a sputtering apparatus in a roll form. A transparent amorphous conductive film composed of a composite oxide of indium oxide and tin oxide having a thickness of 450 Å is adhered by a reactive sputtering method using an indium-tin alloy to obtain a total light transmittance. 88·2%, a conductive film (film Β1) having a surface resistance of 420 Ω/□. The evaluation results of the properties of this film are shown in Tables 1-1 to 1-3. That is, the heat shrinkage rate of the film is described in Table 1-2, and the characteristic values of the film are described in Table 1-2, and the characteristics of the electrode as the TP of the film are described in Table 1-3. (Example 2) The same procedure as in the example was obtained except that the amorphous IT〇 was attached to the surface of the film of the film, instead of the opposite side of the coated surface of the film gossip. Membrane Β 2. The table _ i indicates the characteristic evaluation result. (Example 3) After obtaining the film A1 in the same manner as in the example}, the coating layer 34 4 * 1291182 was used as the wafer coating machine to make the AUREX 344 and the 5 parts of the IRUGACURE of the weight of the Chinese paint. 184 was added to the toluene 1 〇〇 weight portion of the solution (coating agent, / gluten solution), and continuously applied to a thickness of 3 # m. In the same manner as in the example i, the uranium film was supplied to a drying oven of 7 ° C, looc, lioc, and 9 ° C at 20 m/min to dry, and then dried at 120 W/cm. The mercury lamp is irradiated with ultraviolet rays to harden it to obtain a film A3. On the opposite side of the coated surface of the film A3, as in the embodiment, the amorphous layer was adhered to obtain the film B3. The results of the characteristic evaluation are shown in Table 2. • (Example 4) In addition to the coating surface of the film A1 obtained in Example 1, the coating agent solution of Example 3 was used to add an average particle size of 8 &quot; m to the stone particles of 5 parts, and The film was uniformly coated and dried in the same manner as in Example 3 except that the solution was uniformly mixed to obtain a film A4. On the opposite side to the coated surface of the film A4, amorphous ITO was adhered in the same manner as in Example 1 to obtain a film B4. The characteristics evaluation results are shown in Table 2. (Example 5) In addition to the opposite side of the coating surface of the film A3 obtained in Example 3, the coating agent solution of Example 3 was added with a weight of 8 # m of Shi Xiyu particles 2 parts by weight. And uniformly mixing the solution, coating, drying, and hardening to obtain a film A5 coated on both sides. On the coated surface of the film A5 containing the zealand particles, amorphous 1 butyl was adhered in the same manner as in the case of the example 1 to obtain a film B5. The table shows the results of the characteristic evaluation. (Example 6) On the opposite side to the coated surface of the film A4 obtained in Example 4, the coating liquid identical to that of Example 4 was applied, dried, and hardened to obtain a film A6 of the double-coated layer. On the coating surface on the first coating side of the film A6, amorphous 1TO was adhered in the same manner as in Example 1 to obtain a film B6. In Table 1, the results of the evaluation of the characteristics of 35 1291182 Λ Μ 。 are indicated. (Examples 7 to 9) Using the film A3 of Example 3, the film of the film of Example 5, and the film A6 of Example 6, a film of a thickness of 500 A was placed under the surface of the film by a sputtering method. After the layer and the Si 2 layer having a thickness of 600 A, ITO was adhered in the same manner as in Example 1 to obtain a film B7, a film B8, and a film B9. The characteristics of the evaluation results are shown in Table 1-1. (Example 10) A PET film (A4300 manufactured by Toyobo Co., Ltd.) having a thickness of 188/m in two-axis extension was prepared by diluting a solution of AUREX 344 of the Chinese coating of Example 3 into toluene by a wafer coater. The thickness was 6/m, and the continuous supply 'passage was set to 1 (9) at a tension of l〇kg/cm. After drying in a drying oven consisting of four chambers of c, 12, C, and 150C, ultraviolet rays were irradiated with a high-pressure mercury lamp of i2 〇 w/cm to harden it to obtain a film a7. In the film A7, as in Example 1, ITO was adhered to obtain a film B10. The evaluation of the characteristics is not shown in the table. (Example 11) The coating liquid containing the cerium particles of Example 5 was applied, dried, and cured in the same manner as in Example 5 on the opposite side to the coated surface of the film A7 of Example 1 to obtain a film A8. . On the coated surface of the ruthenium-containing particles of the film A8, Ti 〇 2, Si 〇 2, and IT 相同 having the same structure as in Example 7 were sequentially attached to the film Β 11 to obtain the film Β 11 . The results of the characteristic evaluation are shown in Table 1-1. (Examples 12 to 13) In the first embodiment, except that the drying speed after application of the thermosetting resin was set to 3 m/min and i〇m/min, the film B12 was obtained in the same manner except for the production of the films A9 and A10. And film B13. The characteristics evaluation results are shown in Table U. (Bei Shi Example 14) The A4300 roll of Toyo Kogyo, 188 // m thick, was placed in a constant temperature layer of 1 50 C for 24 hours for heat treatment. The same UV-curable coating liquid as in Example 4 was applied thereto. After drying in the same manner as in Example *, it was hardened to obtain A11. In A11, ιτ〇 was attached in the same manner as in Example 4 to obtain Β14. The results of the characteristic evaluation are shown in Table 1-1. (Comparative Example 1) No coating liquid was applied, and a PET film (A4300 manufactured by Toyobo Co., Ltd.) (film A12) having a thickness of i 8 8 /zm extending in two directions was attached, and ITO was attached in the same manner as in Example 获得 to obtain film B. 1 5. The results of the characteristic evaluation are shown in Table 1-1. (Comparative Example 2) On the single side of the film A12, AUREX 344 of the Chinese coating material of Example 3 [Table 1-1] was diluted with a solution of toluene, and applied to a thickness of 6 and set to 80C by After drying in a drying oven composed of four chambers of 100 C, 100 ° C, and 100 ° C, ultraviolet rays were irradiated with a high-pressure mercury lamp of 120 W/cm to harden it, and a film A13 was obtained, and the IT crucible was attached in the same manner as in Example 1. Membrane Β 16 was obtained. The results of the characteristic evaluation are shown in Table 2. EXAMPLES AND COMPARATIVE EXAMPLES Membrane type 150 ° C treatment 1 small heat contraction rate MD (%) TD (%) Example 1 A1 0.35 0.10 Example 2 A1 0.35 0.10 Example 3 A3 0.32 0.08 Example 4 A4 0.31 ^ 0.08 Example 5 A5 0.30 0.08 Example 6 A6 0.30 0.08 Example 7 A3 0.32 0.08 Example 8 A5 0.30 0.08 Example 9 A6 0.30 0.08 Example 1 0 A7 0.38 0.13 Example 1 1 A8 0.36 0.12 Example 1 2 A9 0.22 0.05 Example 1 3 A10 0.43 0.13 Example 1 4 All 0.40 0.12 Comparative Example 1 A12 1.28 0.60 Comparative Example 2 A13 1.05 0.53 37 1291182 • The heat shrinkage rate is 1〇cm&amp; After 1 hour in an electric furnace set to 150 ° C, it was cooled to room temperature and calculated from the dimensions before and after heating. [Table 1-2] Example and Comparative Example Film B Transmittance (%) Resistance Value (Ω/Π) ITO's opposite facet pen hardness 霾 value (%) Example 1 B1 88.2 420 2H 0.8 Example 2 B2 87.8 418 B 0.8 Example 3 B3 88.0 422 3H 0.8 Example 4 B4 87.9 420 3H 5.3 Example 5 B5 88.0 425 3H 1.5 Example 6 B6 87.8 418 3H 9.8 Example 7 B7 92.3 420 3H 1.0 Example 8 B8 92.0 423 3H 1.5 Example 9 B9 87.8 422 3H 9.9 Example 1 0 B10 88.3 425 3H 1.0 Example 11 B11 92.6 a 409 3H 1.6 Example 12 B12 88.4 418 2H 0.8 ^ Example 1 3 B13 88.1 419 2H 0.9 ^ Example 14 B14 87.0 420 3H 12.5 Comparative Example 1 B15 87.8 420 B 1.2 Comparative Example 2 B16 88.0 425 3H 1.3 The resistance value was determined by a 4-terminal method using a width of 700 mm and a length of lm at intervals of 50 points. • Transmittance is measured by a spectroscopic transmission meter to measure the transmittance of light with a wavelength of 550 nm. • The hardness of the pencil is Mitsubishi Uni, and the load is 5〇〇g, which will not stay for 1 time. The hardness of the under scratch. · Depreciation is calculated by measuring the parallel transmittance and the diffuse transmittance by a 霾 value. [Table 1-3] Examples and 150 〇C, 1 250g, 1〇5〇〇g, 30 250g, 10 500g, 30 After the comparison example, the 10,000-time straight line, the 10,000-time straight line, the 10,000-time text, the text, the light, the light, the sliding value, the sliding value, the sliding resistance, the sliding resistance, the resistance value, the resistance value, the resistance value, the resistance value Change (%) (%) (%) 38 1291182 Λ

The furnace was allowed to float for 60 minutes. The linear slidability and the text slidability were measured by a squeegee test using a glass crucible and a spacer ′. The linear β-moving system uses the load of 25〇§ and 5〇〇g, and the back and forth is 50,000 times in 100,000 times, and 150,000-person back and forth in 300,000 times. The resistance value of this part is calculated as the ratio of the increase of the resistance value from the initial value. • Text slidability is also measured in the same manner as linear slidability. . As shown in the examples, the conductive film for a touch panel of the present invention has a small warpage after heat treatment at 15 〇C for 1 hour, and the straight line and text slidability test when used as an electrode of TP is performed. The change in resistance value is still small' to become an electrode with excellent environmental resistance and durability tTP. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1A is a view showing an example of a conductive film for a touch panel of the present invention. Fig. 1B is a view showing another example of a conductive film for a touch panel of the present invention 39 1291182. Fig. 1c is a view showing a guide for a touch panel of the present invention. Other examples of the conductive film for a touch panel Other examples of the conductive film for a touch panel are shown in Fig. 1D. 1A is a view showing a pattern of the present invention. FIG. 1F is a view showing another embodiment of the conductive film for a touch panel of the present invention. [Main component symbol description] 1 Base 2 Conductive film 3 is made of polyethylene terephthalate film. (PET film) formed layers 4, 4a, 4b hard ^ [匕 layer 40

Claims (1)

4 1291182 Μ 4 Pickup, Patent Application Range: 1. A conductive film for a touch panel, characterized in that at least a layer formed of a polyethylene terephthalate film and a bridging substance have been hardened A conductive film was formed on the substrate of the hardened layer of the film; and the shrinkage ratio of the substrate in the longitudinal direction (MD) and the width direction after heating at 150 C for 1 hour was 5% or less. The conductive film for a touch panel according to the above aspect of the invention, wherein the base system has a hardened layer in which a heat bridge material has been hardened into a film. The conductive film for a touch panel according to claim 2, wherein the base system further comprises a hardened layer which has been hardened into a film by a bridging material of light or electron wires. The conductive film for a touch panel according to claim 3, wherein the base system is formed of a polyethylene terephthalate film and has a bridging substance by light or electron wires. The conductive film for a touch panel according to the above aspect of the invention, wherein the conductive film is amorphous ITO (indium tin oxide). 6. The conductive film for a touch panel according to the above-mentioned claim, which has a shrinkage ratio in a length direction (MD) and a width direction (TD) after being heated for 150 hours in advance. It is obtained by attaching a conductive film to a substrate of 5% or less. 7. The conductive film for a touch panel according to claim 6, wherein at least one of the hardened layers is at a temperature between 1 rc and 18 〇〇c, and the poly 41 1291182 4 » Fiji ^ ΤΓ — 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 The at least one of the polyethylene terephthalate (four) is obtained by surface hardening. 8. A method for producing a conductive film for a touch panel, comprising: a substrate preparation step of preparing a substrate, the substrate having at least a layer formed of a polyethylene terephthalate film and a hardened layer in which a bridging material has been hardened into a film, and a length direction (MD &gt;) and a width direction (TD) after heating at 150 ° C for 1 hour The shrinkage ratio is 5% or less; and the conductive film adhesion step of attaching the conductive film to the substrate prepared by the substrate preparation step; in the substrate preparation step, from 1 〇〇〇c to 180 C Temperature between the polyethylene terephthalate film At the same time, after the polyethylene terephthalate film is heat-treated at a temperature between 100 ° C and 180 ° C, the bridging material is hardened on at least one side of the polyethylene terephthalate film. It is formed by hardening at least one layer of the hardened layer into a film.