KR20130072141A - Touch panel - Google Patents

Abstract

The present invention relates to a touch panel, and the touch panel 100 according to the present invention contains silver formed by selectively exposing and developing the window 110 and the silver salt emulsion layer 150 provided as a support, and the window 110. The second electrode pattern 130 formed of a fine pattern on the other surface of the window 110 containing silver formed by selectively exposing and developing the first electrode pattern 120 and the silver salt emulsion layer 150 on one surface of the And an optical filter layer formed on at least one of the one surface of the window 110 and the first electrode pattern 120 and the other surface of the window 110 and the second electrode pattern 130 to selectively block light. It is configured to include the 140, even if the exposure to the silver salt emulsion layer 150 formed on both sides of the window 110 by employing the optical filter layer 140, affecting the silver salt emulsion layer 150 formed on the opposite surface There is an effect that can be prevented.

Description

Touch Panel {Touch Panel}

The present invention relates to a touch panel.

With the development of computers using digital technology, auxiliary devices of computers are being developed together. Personal computers, portable transmission devices, and other personal information processing devices use various input devices such as a keyboard and a mouse And performs text and graphics processing.

However, as the use of computers is gradually increasing due to the rapid progress of the information society, there is a problem that it is difficult to efficiently operate a product by using only a keyboard and a mouse which are currently playing an input device. Therefore, there is an increasing need for a device that is simple and less error-prone, and that allows anyone to easily input information.

In addition, the technology related to the input device is shifting beyond the level that satisfies the general functions, such as high reliability, durability, innovation, design and processing related technology, etc. In order to achieve this purpose, As a possible input device, a touch panel has been developed.

Such a touch panel can be used as a flat panel display device such as an electronic notebook, a liquid crystal display device (LCD), a plasma display panel (PDP), or an electro luminescence (EL) And is a tool used by a user to select desired information while viewing the image display apparatus.

Meanwhile, the types of touch panels include resistive type, capacitive type, electro-magnetic type, SAW type, surface acoustic wave type, and infrared Type). These various types of touch panels are employed in electronic products in consideration of problems of signal amplification, differences in resolution, difficulty in design and processing technology, optical characteristics, electrical characteristics, mechanical characteristics, environmental characteristics, input characteristics, durability and economical efficiency Currently, the most widely used methods are resistive touch panels and capacitive touch panels.

In such a touch panel, an electrode pattern is usually formed of indium tin oxide (ITO). However, in the case of ITO, not only the electrical conductivity is low, but the indium (raw material) is expensive as a rare earth metal, and it is expected to be exhausted within the next 10 years. In addition, the electrode pattern formed of ITO is susceptible to brittle fracture, and thus has a problem of poor durability.

For this reason, as disclosed in Korean Patent Laid-Open Publication No. 10-2010-0091497, studies are being actively conducted to form electrode patterns using metals. However, there is a situation in which an electrode pattern forming method that can be used by satisfying both electrical conductivity and durability while using metal has not been developed.

Korean Patent Publication No. 10-2010-0091497

The present invention has been made to solve the above problems, an object of the present invention is to expose / develop the silver salt emulsion layer to form an electrode pattern containing silver, to provide a touch panel excellent in electrical conductivity while replacing ITO It is for.

A touch panel according to a preferred embodiment of the present invention contains silver formed by selectively exposing / developing a window provided with a support and a silver salt emulsion layer, and selectively selecting a first electrode pattern and a silver salt emulsion layer formed in a fine pattern on one surface of the window. A second electrode pattern formed of a fine pattern on the other surface of the window, and between one surface of the window and the first electrode pattern and between the other surface of the window and the second electrode pattern. It is formed to include at least one of the optical filter layer for selectively blocking the light.

The method may further include a protective layer covering the first electrode pattern.

In addition, the protective layer is characterized in that the hard coating layer, optically transparent adhesive or AR coating layer.

In addition, the hard coating layer is characterized in that formed of acrylic (Acrylic), epoxy (Epoxy), urethane (Urethane) or a combination thereof.

The method may further include a first wiring formed on one surface of the window and connected to the first electrode pattern, and a second wiring formed on the other surface of the window and connected to the second electrode pattern.

In addition, the first wiring contains silver formed by selectively exposing / developing the silver salt emulsion layer, and is integrally formed with the first electrode pattern, and the second wiring is formed by selectively exposing / developing the silver salt emulsion layer. And is integrally formed with the second electrode pattern.

The apparatus may further include a control unit provided in the window, wherein the first wiring and the second wiring are connected to the control unit.

The control unit may include a first control unit provided on one surface of the window, and a second control unit provided on the other surface of the window, wherein the first wiring is connected to the first control unit, and the second wiring is And is connected to the second control unit.

The apparatus may further include a printing unit covering the first wiring.

In addition, the silver salt emulsion layer is characterized in that it comprises a silver salt and a binder.

In addition, the silver salt is characterized in that the silver halide.

In addition, the optical filter layer is characterized in that blocking the ultraviolet rays.

In addition, the optical filter layer is characterized in that blocking the I-line, H-line or G-line in the ultraviolet.

In addition, the optical filter layer is characterized in that the inorganic material for blocking UV.

In addition, the optical filter layer is characterized in that formed with an organic material for UV blocking.

In addition, the silver salt emulsion layer is exposed using a proximity exposure machine or a contact exposure machine.

In addition, the sheet resistance of the first electrode pattern or the sheet resistance of the second electrode pattern is characterized in that less than 150Ω / □.

In addition, the sheet resistance of the first electrode pattern or the sheet resistance of the second electrode pattern is characterized in that 0.1 to 50Ω / □.

In addition, the line width of the fine pattern of the first electrode pattern or the line width of the fine pattern of the second electrode pattern is characterized in that 3 to 7μm.

In addition, the transmittance of the touch panel is characterized in that higher than 85%.

In addition, the aperture ratio of the first electrode pattern or the aperture ratio of the second electrode pattern may be higher than 95%.

In addition, the thickness of the first electrode pattern or the thickness of the second electrode pattern is characterized in that less than 2μm.

The line width of the first wiring or the line width of the second wiring may be narrower than 50 μm.

In addition, the pitch of the first wiring or the pitch of the second wiring is characterized in that less than 50μm.

In addition, the touch panel according to another embodiment of the present invention comprises a window provided as a support; A second electrode pattern containing silver formed by selectively exposing and developing a second silver salt emulsion layer, the second electrode pattern being formed in a fine pattern on one surface of the window; A first electrode pattern containing silver formed by selectively exposing and developing a first silver salt emulsion layer, the first electrode pattern being formed as a fine pattern on one surface of the second electrode pattern in one direction of the window; And an optical filter layer formed between the first silver salt emulsion layer and the second silver salt emulsion layer to selectively block exposure light.

In addition, the first silver salt emulsion layer and the second silver salt emulsion layer in the touch panel according to another embodiment of the present invention includes a silver salt and a binder, the silver salt comprises an inorganic silver salt or an organic silver salt, the binder is gelatin, polyvinyl Among polysaccharides such as alcohol (PVA), polyvinylpyrrolidone (PVP), starch, cellulose and its derivatives, polyethylene oxide, polyvinylamine, chitosan, polylysine, polyacrylic acid, polyalginic acid, polyhyaluronic acid, and carboxycellulose It is characterized by including any one or a combination.

In addition, in the touch panel according to another embodiment of the present invention, the first electrode pattern or the second electrode pattern includes silver, and is formed in any one of a pattern of bar shape, tooth shape, diamond shape, and mesh shape. It is characterized by.

In addition, in the touch panel according to another embodiment of the present invention, the mesh type is characterized in that the rectangular, rhombus, circular or elliptic pattern is provided in a repeating structure.

In addition, in the touch panel according to another embodiment of the present invention, the exposure light is UV, and the optical filter layer is characterized in that it comprises a UV blocking inorganic material or UV blocking organic material.

In addition, the touch panel according to another embodiment of the present invention includes a printing unit covering the first wiring; And a protective layer covering the printing unit and the first electrode pattern.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

Prior to that, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor may properly define the concept of the term in order to best explain its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

According to the present invention, by forming an electrode pattern containing silver by exposing / developing the silver salt emulsion layer, it is possible not only to implement excellent electrical conductivity while replacing ITO, but also to secure excellent durability without causing brittle fracture. There is this.

In addition, according to the present invention, even if the exposure to the silver salt emulsion layer formed on both sides of the window, by using the optical filter layer, there is an effect that it is possible to prevent affecting the silver salt emulsion layer formed on the opposite surface.

In addition, according to the present invention, by forming the electrode pattern directly on both sides of the window provided on the outermost side of the touch panel, the process of forming the electrode pattern on a separate transparent substrate and then attaching to the window can be omitted to simplify the manufacturing process It is possible to reduce the overall thickness of the touch panel.

1A to 1B are cross-sectional views of a touch panel according to a first embodiment of the present invention;
2A and 2B are plan views of a protective layer and a printing unit removed from the touch panel according to the first embodiment of the present invention;
3A to 3D are enlarged plan views of fine patterns of the first and second electrode patterns illustrated in FIG. 1A;
4 to 6 are plan views of the first and second electrode patterns of the touch panel according to the first embodiment of the present invention;
7 to 13 are process cross-sectional views showing the manufacturing method of the touch panel according to the first embodiment of the present invention in the order of manufacturing process;
14 is a cross-sectional view of a touch panel according to a second embodiment of the present invention; And
15A to 15C are cross-sectional views illustrating a method of manufacturing a touch panel according to a second embodiment of the present invention in order of manufacturing process.

BRIEF DESCRIPTION OF THE DRAWINGS The objectives, specific advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. In addition, terms such as “first” and “second” are used to distinguish one component from another component, and the component is not limited by the terms. In the following description of the present invention, a detailed description of related arts which may unnecessarily obscure the gist of the present invention will be omitted.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1A to 1B are cross-sectional views of a touch panel according to a first embodiment of the present invention, and FIGS. 2A to 2B are plan views of a protective layer and a printed part removed from the touch panel according to the first embodiment of the present invention.

1 to 2, the touch panel 100 according to the first embodiment of the present invention is formed by selectively exposing / developing the window 110 and the silver salt emulsion layer 150, which are supports provided in the middle. It contains silver, and the silver formed by selectively exposing / developing the first electrode pattern 120, the silver salt emulsion layer 150 formed in a fine pattern on one surface of the window 110, and fine on the other surface of the window 110 It is formed on at least one of the second electrode pattern 130 and one surface of the window 110 and the first electrode pattern 120 and the other surface of the window 110 and the second electrode pattern 130 formed in a pattern The optical filter layer 140 selectively blocks light.

The window 110 serves to provide a region in which the first electrode pattern 120 and the second electrode pattern 130 are to be formed, and is a support provided at the outermost side of the touch panel 100. Here, the window 110 should have a supporting force capable of supporting the first electrode pattern 120 and the second electrode pattern 130 and transparency for allowing a user to recognize an image provided by the image display apparatus. In view of the above-mentioned support and transparency, the window 110 is made of polyethylene terephthalate (PET), polycarbonate (PC), polymethyl methacrylate (PMMA), polyethylene naphthalate (PEN), polyether sulfone (PES), Cyclic olefin polymer (COC), Triacetylcellulose (TAC) film, Polyvinyl alcohol (PVA) film, Polyimide (PI) film, Polystyrene (PS), Biaxially oriented polystyrene (K resin-containing biaxially oriented) PS, BOPS), glass or tempered glass, etc., but is not necessarily limited thereto.

Meanwhile, first and second electrode patterns 120 and 130 are directly formed on both surfaces of the window 110. Therefore, the process of attaching the electrode pattern to the window 110 after the electrode pattern is formed on a separate transparent substrate can be omitted, thereby simplifying the manufacturing process and reducing the overall thickness of the touch panel 100.

The first electrode pattern 120 and the second electrode pattern 130 serve to generate a signal when the user touches the controller 199 to recognize the touch coordinates. The first electrode pattern 120 ) Is formed on one surface of the window 110, and the second electrode pattern 130 is formed on the other surface of the window 110. Here, the fine pattern of the first electrode pattern 120 and the fine pattern of the second electrode pattern 130 are formed by selectively exposing / developing the silver salt emulsion layer 150 (containing red). ).

In addition, the first wiring 160 and the second wiring 170 are connected to the first electrode pattern 120 and the second electrode pattern 130, respectively, and serve to receive electrical signals. ) Is formed on one surface of the window 110, and the second wiring 170 is formed on the other surface of the window 110. Here, the first wiring 160 and the second wiring 170 may be formed by selectively exposing / developing the silver salt emulsion layer 150 (containing red). In this case, the first wiring 160 is integrally formed with the first electrode pattern 120, and the second wiring 170 is integrally formed with the second electrode pattern 130. In this way, the first wiring 160 is integrally formed with the first electrode pattern 120, and the second wiring 170 is integrally formed with the second electrode pattern 130, thereby simplifying the manufacturing process. The lead time can be shortened. In addition, since the bonding process between the first and second wirings 160 and 170 and the first and second electrode patterns 120 and 130 may be omitted, the first and second wirings 160 and 170 and the first and second electrode patterns may be omitted. There is an effect that can prevent the problem of step difference or poor bonding between (120, 130) in advance. However, the first and second wirings 160 and 170 are not necessarily formed integrally with the first and second electrode patterns 120 and 130 by exposing / developing the silver salt emulsion layer 150. , Organic silver may be formed separately from the first and second electrode patterns 120 and 130 using a conductive polymer, carbon black (including CNTs), metal oxides, or metals.

In addition, as shown in FIG. 2B, the window 110 may include a controller 199 which is a kind of controller. In this case, the first wiring 160 and the second wiring 170 are directly connected to the control unit 199 provided in the window 110. As such, since the first wiring 160 and the second wiring 170 are directly connected to the control unit 199 provided in the window 110, the conventional flexible printed circuit board may be omitted. For example, the controller 199 may include a first controller 199-1 provided on one surface of the window 110 and a second controller 199-2 provided on the other surface of the window 110. In this case, the first wiring 160 is connected to the first control unit 199-1 and the second wiring 170 is connected to the second control unit 199-2.

Meanwhile, the silver salt emulsion layer 150 forming the first and second electrode patterns 120 and 130 and the first and second wirings 160 and 170 may be formed of silver salt 153 (see FIG. 8A or FIG. 8B) and the binder 155. Include. The silver salt 153 may be an inorganic silver salt such as silver halide (AgCl, AgBr, AgF, AgI), or an organic silver salt such as silver acetate. In addition, the binder 155 uniformly disperses the silver salt 153 and enhances the adhesive force between the silver salt emulsion layer 150 and the optical filter layer 140 or between the silver salt emulsion layer 150 and the window 110, gelatin, Polysaccharides such as polyvinyl alcohol (PVA), polyvinylpyrrolidone (PVP), starch, cellulose and its derivatives, polyethylene oxide, polyvinylamine, chitosan, polylysine, polyacrylic acid, polyalginic acid, polyhyaluronic acid, carboxycellulose And the like. The binder 155 has neutral, anionic and cationic properties depending on the ionicity of the functional group.

In addition to the silver salt 153 and the binder 155, the silver salt emulsion layer 150 may further include additives such as a solvent or a dye. Specifically, the solvent includes water, an organic solvent (for example, alcohols such as methanol, ketones such as acetone, amides such as formamide, sulfoxides such as dimethylsulfoxide, esters such as ethyl acetate, ethers Etc.), ionic liquids, and mixtures thereof.

On the other hand, the sheet resistance of the first electrode pattern 120 or the sheet resistance of the second electrode pattern 130 may be 150 Ω / □ or less to suit the touch panel 100 by adjusting the thickness or by adjusting the silver content of the silver salt emulsion layer 150. have. More specifically, the sheet resistance of the first and second electrode patterns 120 and 130 may be 0.1 to 50Ω / □. Here, the reason for forming the sheet resistance of the first and second electrode patterns 120 and 130 to 0.1 to 50 Ω / □ is the silver salt 153 when the sheet resistance of the first and second electrode patterns 120 and 130 is 0.1 Ω / □ or less. This is because transparency may be impaired due to too much amount, and when the sheet resistance of the first and second electrode patterns 120 and 130 is 50 Ω / □ or more, the electrical conductivity is low and the utilization thereof is lowered. However, the sheet resistance of the first and second electrode patterns 120 and 130 is not necessarily limited to the above numerical values.

3A to 3D are enlarged plan views of the fine patterns of the first and second electrode patterns illustrated in FIG. 1A. Referring to this, FIGS. Let's take a look. As shown in FIG. 3A, the line width W of the fine patterns of the first and second electrode patterns 120 and 130 is preferably 3 μm or more in order to prevent the sheet resistance from becoming too high, and is prevented from being visually identified to the user. In order to do this, it is preferable that it is 7 micrometers or less. As a result, the line width W of the fine patterns of the first and second electrode patterns 120 and 130 is preferably 3 to 7 μm, but is not necessarily limited thereto.

In addition, the fine pattern of the first electrode pattern 120 and the fine pattern of the second electrode pattern 130 may be rectangular (see FIG. 3A), rhombus (see FIG. 3B), circular (see FIG. 3C), or ellipse (see FIG. 3D). ) May be a repeated mesh structure. That is, all of the fine patterns of the first and second electrode patterns 120 and 130 may have a mesh structure intersecting with the lattice pattern.

Meanwhile, as shown in the enlarged view of FIG. 2A, the line width X and the pitch P of the first and second wirings 160 and 170 may be 50 μm or less, respectively.

4 to 6 are plan views of the first and second electrode patterns of the touch panel according to the first embodiment of the present invention. As shown in FIGS. 4 to 6, the first electrode pattern 120 and the second electrode pattern 130 may be a bar type (see FIG. 4), a tooth type (see FIG. 5), or a diamond type. (Diamond Type, see FIG. 6).

In detail, the first electrode pattern 120 and the second electrode pattern 130 may be patterned into a bar type (see FIG. 4). In this case, the first electrode pattern 120 and the second electrode pattern 130 may be formed in the vertical direction. In addition, if necessary, any one of the first electrode pattern 120 and the second electrode pattern 130 may be patterned into a bar having a relatively large width, and the other may be patterned into a bar having a relatively small width ( Typically defined as Bar and Strip Type).

In addition, the first electrode pattern 120 and the second electrode pattern 130 may be patterned in a tooth type (see FIG. 5). In this case, the first electrode pattern 120 and the second electrode pattern 130 are formed of a plurality of triangles parallel to one direction. In addition, the first electrode pattern 120 is inserted between the second electrode pattern 130 and the second electrode pattern 130 so that the first electrode pattern 120 and the second electrode pattern 130 do not overlap each other. It may be formed to be inserted into the first electrode pattern 120.

In addition, the first electrode pattern 120 and the second electrode pattern 130 may be patterned into a diamond type (see FIG. 6). In this case, the first electrode pattern 120 and the second electrode pattern 130 are composed of the sensing units 137a and 137b and the connecting portions 139a and 139b, and the first electrode pattern 120 through the connecting portions 139a and 139b. ) And the second electrode pattern 130 may be connected to each other in a vertical direction. In addition, the sensing unit 137a of the first electrode pattern 120 and the sensing unit 137b of the second electrode pattern 130 may be disposed so as not to overlap each other.

However, as described above, patterning the first electrode pattern 120 and the second electrode pattern 130 into a bar shape, a tooth shape, or a diamond shape is exemplary, but is not limited thereto. 120 and the second electrode pattern 130 may be patterned in any pattern known in the art.

In addition, the thickness of the first electrode pattern 120 or the thickness of the second electrode pattern 130 is not particularly limited, but may be 10 μm or less to secure an appropriate transmittance, and more preferably 2 μm or less.

Meanwhile, the first electrode pattern 120 and the second electrode pattern 130 are formed by selectively exposing / developing the silver salt emulsion layer 150, and when exposing the silver salt emulsion layer 150, a proximity exposure machine or a contact. A contact exposure machine may be used, which will be described later in the manufacturing method.

In addition, since the window 110 (refer to FIG. 1A or FIG. 1B) is a support provided on the outermost side of the touch panel 100, the first electrode pattern 120 formed on the upper surface of the window 110 may be connected to the input means 197. In order to prevent direct contact, the protective layer 190 may be provided. That is, the protective layer 190 serves to protect the first electrode pattern 120 and is formed on the first electrode pattern 120. Here, the protective layer 190 may be a hard coating layer (Hard Coating Layer), an optical clear adhesive (OCA) or AR coating layer (Anti Reflect Coating Layer), the hard coating layer is acrylic (Acrylic), epoxy ( Epoxy), urethane (Urethane) or a combination thereof may be formed.

In addition, the printing unit 195 covering the first wire 160 may be formed to cover the first wire 160 or to display a logo. Here, the printing unit 195 may be formed using screen printing or sputtering. Among them, when the printing unit 195 is formed by using a sputter, the thickness of the printing unit 195 may be thinly formed to a nanometer unit.

The optical filter layer 140 selectively blocks (reflects or absorbs) light so that the silver salt emulsion layer 150 formed on opposite surfaces may be affected even when the silver salt emulsion layer 150 formed on both sides of the window 110 is exposed. It serves to prevent giving. Here, the optical filter layer 140 is formed on at least one of one surface of the window 110 and the first electrode pattern 120, and the other surface of the window 110 and the second electrode pattern 130. That is, the optical filter layer 140 is formed on both sides of the window 110 (see FIG. 1A) or is formed on one side (see FIG. 1B).

Specifically, the optical filter layer 140 selectively blocks the light irradiated when the silver salt emulsion layer 150 is exposed. Therefore, the light blocked by the optical filter layer 140 is determined in consideration of the light irradiated during exposure. Here, the light irradiated during exposure can be any wavelength such as visible light, ultraviolet light, X-ray, etc., if the ultraviolet light (wavelength of about 10 to 397nm) is irradiated during exposure, the optical filter layer 140 is formed to selectively block the ultraviolet light. . More specifically, if the I-line (wavelength is 365nm), H-line (405nm) or G-line (436nm) is irradiated in the ultraviolet during exposure, the optical filter layer 140 is I-line, H-line or G- It is formed to selectively block only the line. As such, by selectively blocking the light irradiated during the exposure of the optical filter layer 140, it may be prevented from affecting the silver salt emulsion layer 150 formed on opposite surfaces. In addition, since the optical filter layer 140 passes most of the light except the light irradiated at the time of exposure, the optical filter layer 140 has substantially transparency and does not lower the visibility of the touch panel 100.

On the other hand, the optical filter layer 140 may be formed of a UV blocking inorganic material or UV blocking organic material. Here, the UV blocking inorganic material may be a metal oxide such as indium tin oxide and titanium dioxide, and the UV blocking organic material may be benzophenone, benzotriazole, or salicylic acid. (Salicylic Acid), acrylonitrile, organic nickel compounds, and the like. However, the above-described materials are exemplary, and the scope of the present invention is not limited thereto.

Meanwhile, as described above, the touch panel 100 including the window 110, the first electrode pattern 120, the second electrode pattern 130, and the optical filter layer 140 may display an image provided by the image display device. The transmittance is preferably 85% or more so that the user can recognize it. In addition, in order to implement the transmittance of the touch panel 100 to 85% or more, the aperture ratios of the first electrode pattern 120 and the second electrode pattern 130 may be adjusted. In this case, the opening ratio of the first electrode pattern 120 or the second electrode pattern 130 may be 95% or more.

In addition, since the first electrode pattern 120 and the second electrode pattern 130 are formed on both surfaces of the touch panel 100 according to the first embodiment of the present invention, the self-capacitance method ( Self Capacitive Type) It can be used as a touch panel or a mutual capacitive type touch panel.

7 to 13 are cross-sectional views illustrating a manufacturing method of a touch panel according to a first embodiment of the present invention in the order of manufacturing process, with reference to the manufacturing of the touch panel 100 according to the first embodiment of the present invention. Let's look at how.

First, as shown in FIG. 7A or 7B, the optical filter layer 140 is formed in the window 110. Here, the optical filter layer 140 serves to prevent affecting the silver salt emulsion layer 150 formed on opposite surfaces by selectively blocking light when the silver salt emulsion layer 150 is exposed in a step to be described later. Therefore, the optical filter layer 140 determines the light to be blocked in consideration of the light used during exposure. The light irradiated at the time of exposure may be any wavelength such as visible light, ultraviolet light, X-ray, etc., and if the ultraviolet light (wavelength is about 10 to 397 nm) is applied at the time of exposure, the optical filter layer 140 is formed to selectively block the ultraviolet light. More specifically, if the I-line (wavelength is 365nm), H-line (405nm) or G-line (436nm) is irradiated in the ultraviolet during exposure, the optical filter layer 140 is I-line, H-line or G- It is formed to selectively block only the line.

As such, in order to block ultraviolet rays, I-lines, H-lines, or G-lines with the optical filter layer 140, the optical filter layer 140 may be formed of an inorganic material for UV blocking or an organic material for UV blocking. Specifically, the UV blocking inorganic material may be a metal oxide such as indium tin oxide, titanium dioxide, and the like. The organic material for UV blocking may be benzophenone, benzotriazole, Salicylic acid, acrylonitrile, organic nickel compounds, and the like. On the other hand, in the case of using an inorganic material for UV blocking as the optical filter layer 140, the optical filter layer 140 may be formed by sputtering, evaporation, and the like. In addition, in the case of using the organic material for UV blocking as the optical filter layer 140, the optical filter layer 140 is die casting, screen printing, gravure printing, offset printing (Off- It may be formed by set Pringting, Bar Coating, or the like.

On the other hand, even if the optical filter layer 140 is formed only on at least one of the one surface or the other surface of the window 110 to block the light when exposing the silver salt emulsion layer 150 affects the silver salt emulsion layer 150 formed on the opposite surface each other. It can prevent. Therefore, as shown in FIG. 7A, the optical filter layer 140 does not necessarily need to be formed on both surfaces of the window 110, but may be formed only on at least one surface or the other surface of the window 110 as shown in FIG. 7B. It may be. Hereinafter, FIGS. 8A, 9A, 10A, 11A, 12A, and 13A are views based on the configuration in which the optical filter layer 140 is formed on both surfaces of the window 110, and FIGS. 8B, 9B, and FIG. 10B, 11B, 12B, and 13B illustrate the configuration in which the optical filter layer 140 is formed on one surface of the window 110.

Next, as shown in FIG. 8A or 8B, the silver salt emulsion layer 150 is formed. When the optical filter layer 140 is formed on both surfaces of the window 110 in the above-described step, the silver salt emulsion layer 150 is formed on the optical filter layer 140 formed on both surfaces of the window 110 (see FIG. 8A). When the optical filter layer 140 is formed on one surface of the 110, the silver salt emulsion layer 150 is formed on the other surface of the optical filter layer 140 and the window 110 (see FIG. 8B). Here, the silver salt emulsion layer 150 includes a silver salt 153 and a binder 155. Specifically, the silver salt 153 may be an inorganic silver salt such as silver halide (AgCl, AgBr, AgF, AgI) or an organic silver salt such as silver acetate. In addition, the binder 155 is gelatin, polyvinyl alcohol (PVA), polyvinylpyrrolidone (PVP), polysaccharides such as starch, cellulose and its derivatives, polyethylene oxide, polyvinylamine, chitosan, polylysine, polyacrylic acid , Polyalginic acid, polyhyaluronic acid, carboxycellulose and the like. For reference, silver salt 153 in the drawings is exaggerated for clarity of understanding and does not represent actual size or concentration. In addition to the silver salt 153 and the binder 155, the silver salt emulsion layer 150 may further include additives such as a solvent or a dye.

Meanwhile, the silver salt emulsion layer 150 is formed using die casting, screen printing, gravure printing, offset printing, and bar coating. can do. In addition, after the silver salt emulsion layer 150 is formed, the silver salt emulsion layer 150 may be dried by thermal drying, IR drying or natural drying.

Next, as shown in FIGS. 9 to 11, the silver salt emulsion layer 150 is selectively exposed / developed to form the first electrode pattern 120 and the second electrode pattern 130 containing silver. . That is, the first electrode pattern 120 is formed on one side of the window 110 and the second electrode pattern 130 is formed on the other side of the window 110.

Specifically, as shown in FIG. 9A or 9B, the silver salt emulsion layer 150 is selectively exposed. Since the silver salt emulsion layer 150 is formed on both sides of the window 110 in the above-described step, the exposure is performed on both sides of the window 110 in this step. In this case, the exposure may be simultaneously performed at both sides with respect to the window 110, or may be sequentially performed one by one. On the other hand, the light irradiated during exposure can be any wavelength, such as visible light, ultraviolet rays, X-rays, ultraviolet rays can usually be used. More specifically, the high-pressure mercury discharge can be exposed using I-line (365 nm), H-line (405 nm) or G-line (436 nm), which has a large relative intensity. A relatively short wavelength I-line can be selected.

In this step, if the mask 180 is disposed on both sides of the window 110 and selectively irradiates light to the silver salt emulsion layer 150, the silver salt 153 is light in the silver salt emulsion layer 150 of the irradiated portion. Photosensitized by energy produces a fine silver nucleus, defined as a so-called latent image. As a result, silver nuclei are selectively generated only in portions irradiated with light through exposure. As such, the first electrode pattern 120, the first wiring 160, the second electrode pattern 130, and the second wiring 170 are finally formed in the portion irradiated with light. Therefore, in this step, the first electrode pattern 120, the first wiring 160, the second electrode pattern 130, and the second wiring 170 to be implemented should be selectively exposed.

On the other hand, as described above, even if the exposure from both sides relative to the window 110, the optical filter layer 140 blocks the light irradiated during exposure (see arrow), the silver salt emulsion layer 150 is the window 110 It is not affected by the light irradiated from the opposite side. Therefore, even if the fine patterns of the first electrode pattern 120 and the second electrode pattern 130 to be finally formed are different, the silver salt emulsion layer 150 may be exposed to light on the opposite side of the window 110 during exposure. Since it is not affected, the first electrode pattern 120 and the second electrode pattern 130 can be formed precisely.

In addition, when exposing the silver salt emulsion layer 150, a proximity exposure machine or a contact exposure machine may be used. A proximity exposure machine or a contact exposure machine may have a relatively tact time. Short) not only improves productivity, but also has the advantage of being suitable for mass production.

Next, as shown in FIG. 10A or 10B, the silver salt emulsion layer 150 is developed. In this step, the developer is supplied to the silver salt emulsion layer 150 to reduce the metal silver 157. At this time, the silver ions provided from the silver salt 153 or the developer are reduced to the metal silver 157 using the silver nucleus as a catalyst by the reducing agent in the developer. Since the silver nucleus was selectively generated only in the portion irradiated with light in the above-described step, the metal silver 157 is selectively reduced only in the portion irradiated with light in this step.

On the other hand, the method for supplying the developer to the silver salt emulsion layer 150 may use any method known in the art. For example, the silver salt emulsion layer 150 is immersed in the developer, or the developer is sprayed onto the silver salt emulsion layer 150 by spraying, or the developer is contacted with the silver salt emulsion layer 150 in the form of a vapor by the method. The developer can be supplied.

In addition, after the silver salt emulsion layer 150 is developed, the developer may be removed using water or high pressure air.

Next, as shown in FIG. 11A or 11B, the fixing process is performed on the silver salt emulsion layer 150. Here, the fixing process is to remove the silver salt 153 that is not reduced to silver by supplying a fixing solution to the silver salt emulsion layer 150. As such, when the silver salt 153 that is not reduced to silver is removed, only a binder 155 such as gelatin remains in the portion where the silver salt 153 is removed.

As a result, a portion of the silver salt emulsion layer 150 that is reduced to the metallic silver 157 through exposure / development is formed by the first electrode pattern 120, the first wiring 160, the second electrode pattern 130, and the second wiring ( 170), the portion from which the silver salt 153 has been removed through the fixing process remains transparent only the binder 155 remains.

As described above, after the silver salt emulsion layer 150 is selectively exposed / developed, the first electrode pattern 120 and the first wiring 160 connected to the first electrode pattern 120 may be formed through a fixing process. The second wire 170 connected to the second electrode pattern 130 and the second electrode pattern 130 can be formed. In this case, the first wiring 160 is integrally formed with the first electrode pattern 120, and the second wiring 170 is integrally formed with the second electrode pattern 130.

However, the first and second wirings 160 and 170 are not necessarily formed integrally with the first and second electrode patterns 120 and 130 by exposing / developing the silver salt emulsion layer 150. The organic silver may be formed separately from the first and second electrode patterns 120 and 130 by using a conductive polymer, carbon black (including CNT), metal oxides or metals. In this case, the first and second wirings 160 and 170 may be formed using a screen printing method, a gravure printing method, an inkjet printing method, or the like.

Next, as shown in FIG. 12A or 12B, the printing unit 195 covering the first wiring 160 is formed. Here, the printing unit 195 covers the first wiring 160 or displays a logo. The printing unit 195 may be formed by using a screen printing method or a sputter.

Next, as shown in FIG. 13A or 13B, the protecting layer 190 is formed on the first electrode pattern 120. Here, the protective layer 190 is to protect the first electrode pattern 120 so that the first electrode pattern 120 is not in direct contact with the input means 197, the hard coating layer (Hard Coating Layer), the optical transparent adhesive ( Optical Clear Adhesive (OCA) or AR Reflective Layer (Anti Reflect Coating Layer). At this time, the hard coating layer may be formed of acrylic (Acrylic), epoxy (Epoxy), urethane (Urethane) or a combination thereof. In addition, the protective layer 190 may be laminated on the first electrode pattern 120 in the form of a film, or may be coated in a liquid state by using spin coating.

On the other hand, as shown in Figure 2b, the manufacturing method of the touch panel 100 according to the present embodiment may further include providing a control unit 190 which is a kind of controller in the window (110). . In this case, the first wiring 160 and the second wiring 170 are directly connected to the controller 190 provided in the window 110. As such, since the first wiring 160 and the second wiring 170 are directly connected to the controller 190 provided in the window 110, the conventional flexible printed circuit board may be omitted. For example, the controller 190 may include a first control unit 195 provided on one surface of the window 110 and a second control unit 197 provided on the other surface of the window 110. In this case, the first wire 160 is connected to the first control unit 195, and the second wire 170 is connected to the second control unit 197.

Hereinafter, the touch panel 200 according to the second embodiment of the present invention will be described with reference to FIG. 14. 14 is a cross-sectional view of the touch panel 200 according to the second embodiment of the present invention. Here, the description of the touch panel 200 according to the second embodiment of the present invention is the same as the description of the touch panel 100 according to the first embodiment of the present invention will be omitted.

The touch panel 200 according to the second embodiment of the present invention contains silver formed by selectively exposing and developing the window 210 and the second silver salt emulsion layer 250-2 provided as a support, and the window 210. And a silver formed by selectively exposing and developing the second electrode pattern 230 and the first silver salt emulsion layer 250-1 formed on one surface of the second pattern, and the second silver salt emulsion layer in one direction of the window 210. It is formed between the first electrode pattern 220 formed in a fine pattern on one surface of the 250-2, and the first silver salt emulsion layer 250-1 and the second silver salt emulsion layer 250-2 to selectively block the light for exposure The optical filter layer 240 is included.

The first electrode pattern 220 and the second electrode pattern 230 are bar-shaped containing silver by selectively exposing and developing the silver salt emulsion layers 250-1 and 250-2 including the silver salt 253 and the binder 255, respectively. It may be formed in any one of a tooth shape, diamond shape, and mesh shape, in particular, the mesh shape may be provided in a structure in which a rectangle, rhombus, circle or ellipse is repeated.

Here, the silver salt 253 may be an inorganic silver salt such as silver halide (AgCl, AgBr, AgF, AgI) or an organic silver salt such as silver acetate. In addition, the binder 255 uniformly disperses the silver salt 253 and adheres between the silver salt emulsion layers 250-1 and 250-2 and the optical filter layer 240 or between the second silver salt emulsion layer 250-2 and the window 210. For example, polysaccharides such as gelatin, polyvinyl alcohol (PVA), polyvinylpyrrolidone (PVP), starch, cellulose and its derivatives, polyethylene oxide, polyvinylamine, chitosan, polylysine, polyacrylic acid , Polyalginic acid, polyhyaluronic acid, carboxycellulose and the like. The binder 255 has neutral, anionic and cationic properties depending on the ionicity of the functional group.

The optical filter layer 240 selectively blocks light emitted when the silver salt emulsion layers 250-1 and 250-2 are exposed. Therefore, the optical filter layer 240 is provided in consideration of light irradiated during exposure. Here, the light irradiated during exposure may be any wavelength such as visible light, ultraviolet light, X-ray, etc., if ultraviolet light (wavelength of about 10 to 397nm) is irradiated during exposure, the optical filter layer 240 is formed to selectively block the ultraviolet light. .

For example, if the I-line (wavelength is 365 nm), H-line (405 nm) or G-line (436 nm) is irradiated in ultraviolet light during exposure, the optical filter layer 240 may be an I-line, H-line or G- It is formed to selectively block only the line. As such, by selectively blocking the light irradiated during the exposure of the optical filter layer 240, the optical filter layer 240 may be prevented from affecting the silver salt emulsion layers 250-1 and 250-2 formed on opposite surfaces thereof. In addition, since the optical filter layer 240 passes most of the light excluding the light irradiated at the time of exposure, the optical filter layer 240 is substantially transparent and does not lower the visibility of the touch panel 200.

In addition, the touch panel 200 according to the second embodiment of the present invention is connected to the first electrode pattern 220 and the second electrode pattern 230, respectively, the first wire 260 and the second to receive an electrical signal The display device may further include a wiring 270, a protective layer 290 formed on the first silver salt emulsion layer 250-1, and a printing unit 295 covering the first wiring 260.

Here, the first wiring 260 and the second wiring 270 may be formed as regions containing silver by selectively exposing and developing the silver salt emulsion layers 250-1 and 250-2, respectively. In this case, the first wiring 260 is integrally formed with the first electrode pattern 220, and the second wiring 270 is integrally formed with the second electrode pattern 230. In this way, the first wiring 260 is integrally formed with the first electrode pattern 220, and the second wiring 270 is integrally formed with the second electrode pattern 230, thereby simplifying the manufacturing process. The lead time can be shortened.

In addition, since the bonding process between the first and second wirings 260 and 270 and the first and second electrode patterns 220 and 230 may be omitted, the first and second wirings 260 and 270 and the first and second electrode patterns 220 and 230 may be omitted. There is an effect that can prevent the problem of step difference or poor bonding in advance. Here, the first and second wirings 260 and 270 are not necessarily formed integrally with the first and second electrode patterns 220 and 230 by exposing and developing the silver salt emulsion layers 250-1 and 250-2. Ag paste and organic silver may be formed separately from the first and second electrode patterns 220 and 230 using a conductive polymer, carbon black (including CNTs), metal oxides, or metals.

The protective layer 290 is a layer that protects the first electrode pattern 220 and is formed on the first electrode pattern 220. Here, the protective layer 290 may be a hard coating layer (Hard Coating Layer), an optical clear adhesive (OCA) or an AR reflecting layer (Anti Reflect Coating Layer), wherein the hard coating layer is acrylic (Acrylic), epoxy ( Epoxy), urethane (Urethane) or a combination thereof may be formed.

The printing unit 295 may be formed on the first wiring 260 to cover the first wiring 260 or to display a logo. Here, the printing unit 295 may be formed using screen printing or sputtering.

The touch panel 200 according to the second exemplary embodiment of the present invention includes the first electrode pattern 220 and the second electrode pattern 230 containing silver on the upper and lower surfaces of the optical filter layer 240. By forming in one form, it is possible not only to implement excellent electrical conductivity while replacing ITO, but also to ensure excellent durability since no brittle fracture occurs.

Hereinafter, a method of manufacturing the touch panel 200 according to the second embodiment of the present invention will be described with reference to FIGS. 15A to 15C. 15A to 15C are cross-sectional views illustrating a method of manufacturing the touch panel 200 according to a second embodiment of the present invention in order of manufacturing process.

In the method of manufacturing the touch panel 200 according to the second embodiment of the present invention, as shown in FIG. 15A, first, the second silver salt emulsion layer 250-2 and the optical filter layer are sequentially formed in one surface direction of the window 210. 240, and a first silver salt emulsion layer 250-1.

Specifically, the second silver salt emulsion layer 250-2 may include die casting, screen printing, gravure printing, offset printing, and bar coating. ) May be formed into a layer including the silver salt 253 and the binder 255.

The silver salt 253 may include an inorganic silver salt such as silver halide (AgCl, AgBr, AgF, AgI) or an organic silver salt such as silver acetate, and the binder 255 may be gelatin, polyvinyl alcohol (PVA), or polyvinylpi Polysaccharides such as rolidone (PVP), starch, cellulose and derivatives thereof, polyethylene oxide, polyvinylamine, chitosan, polylysine, polyacrylic acid, polyalginic acid, polyhyaluronic acid, carboxycellulose and the like.

Optionally, the second silver salt emulsion layer 250-2 may further include additives such as a solvent or a dye in addition to the silver salt 253 and the binder 255.

The second silver salt emulsion layer 250-2 may be dried by thermal drying, IR drying, or natural drying with respect to the second silver salt emulsion layer 250-2 thus formed.

Thereafter, the optical filter layer 240 is formed on the upper surface of the second silver salt emulsion layer 250-2 in one surface direction of the window 210. The optical filter layer 240 may be formed of, for example, an inorganic material for blocking UV or an organic material for blocking UV in order to block I-line, H-line, or G-line of ultraviolet rays.

Specifically, the UV blocking inorganic material may be a metal oxide such as indium tin oxide, titanium dioxide, and the like. The organic material for UV blocking may be benzophenone, benzotriazole, Salicylic acid, acrylonitrile, organic nickel compounds, and the like.

On the other hand, in the case of using an inorganic material for UV blocking as the optical filter layer 240, the optical filter layer 240 may be formed by sputtering, evaporation, and the like. In addition, in the case of using the organic material for UV blocking as the optical filter layer 240, die casting, screen printing, gravure printing, offset printing (Off-set Pringting), bar coating It can be formed by (Bar Coating).

The first silver salt emulsion layer 250-1 is formed on the upper surface of the optical filter layer 240 with respect to the optical filter layer 240. The first silver salt emulsion layer 250-1 may be formed by the same method as the method of forming the second silver salt emulsion layer 250-2.

After forming the first silver salt emulsion layer 250-1, double-sided exposure, development, and fixing of the first silver salt emulsion layer 250-1 and the second silver salt emulsion layer 250-2, as shown in FIG. 15B. The first electrode pattern 220 and the second electrode pattern 230 containing silver are formed.

In detail, double-sided exposure of the first silver salt emulsion layer 250-1 and the second silver salt emulsion layer 250-2 is performed based on the optical filter layer 240. The silver salt emulsion layer 250-2 may be simultaneously exposed or sequentially made one by one.

At this time, the optical filter layer 240 selectively blocks (reflects or absorbs) the light for exposure as shown in FIG. 15B, so that the first silver salt emulsion layer 250-1 and the second silver salt emulsion layer 250-2 are formed on both surfaces. ), The exposure light serves to prevent the exposure light from affecting the silver salt emulsion layers 250-1 and 250-2 formed on opposite surfaces of the optical filter layer 240.

In particular, after the first mask 280-1 and the second mask 280-2 are disposed above the optical filter layer 240 and the window 210, the first silver salt emulsion layer 250-1 is disposed. When the second silver salt emulsion layer 250-2 is irradiated with light, the silver salt 253 is exposed to the light energy at the portion where the light is irradiated to produce a fine silver nucleus defined as a so-called latent image.

As a result, silver nuclei are selectively generated only in the portions to which light is irradiated through exposure.

Subsequently, a developing process is performed on the first silver salt emulsion layer 250-1 and the second silver salt emulsion layer 250-2 on which silver nuclei are formed.

Specifically, in the developing process for the first silver salt emulsion layer 250-1 and the second silver salt emulsion layer 250-2, the developer is supplied to the first silver salt emulsion layer 250-1 and the second silver salt emulsion layer 250-2. To reduce the metal silver 257.

At this time, silver ions provided from the silver salt 253 or the developer are reduced to the metal silver 257 by the reducing agent in the developer using the generated silver nucleus as a catalyst. Since a silver nucleus was selectively generated only in the part to which light was irradiated in the above-mentioned double-sided exposure process, the metal silver 257 is selectively reduced only to the part which irradiated light in this development process.

As a method for supplying such a developer, any method known in the art may be used. For example, the first silver salt emulsion layer 250-1 and the second silver salt emulsion layer 250-2 are immersed in the developer, or the developer solution is first silver salt emulsion layer 250-1 and the second silver salt emulsion layer 250-2. The developer may be sprayed or sprayed, or the developer may be supplied by vapor contacting the first silver salt emulsion layer 250-1 with the second silver salt emulsion layer 250-2.

In addition, after the silver salt emulsion layer 150 is developed, the developer may be removed using water or high pressure air.

Next, a fixing process is performed to remove the silver salt 253 which is not reduced to silver by supplying a fixing solution to the first silver salt emulsion layer 250-1 and the second silver salt emulsion layer 250-2.

In particular, the fixing process penetrates and supplies the fixing solution to the second silver salt emulsion layer 250-2 so that the silver salt 253 that is not reduced to silver exits through the optical filter layer 240 and the first silver salt emulsion layer 250-1. will be. As such, when the silver salt 253 that is not reduced to silver is removed, only a binder 255 such as gelatin remains in the portion where the silver salt 253 is removed.

Accordingly, portions of the first silver salt emulsion layer 250-1 and the second silver salt emulsion layer 250-2 that are reduced to the metal silver 257 through the double-sided exposure and development processes are first electrode patterns 220 and the first. A portion formed of the wiring 260, the second electrode pattern 230, and the second wiring 270 and from which the silver salt 253 is removed through the fixing process remains transparent only by the binder 255.

In this case, the first and second wirings 260 and 270 are not necessarily formed integrally with the first and second electrode patterns 220 and 230 by exposing and developing the silver salt emulsion layers 250-1 and 250-2. Ag paste, organic silver, conductive polymer, carbon black (including CNT), metal oxides and metals can be prepared by screen printing, gravure printing or inkjet printing. It may be formed separately from the first and second electrode patterns 220 and 230.

Subsequently, as illustrated in FIG. 5C, a printing unit 295 covering the first wiring 260 is formed. Here, the printing unit 295 covers the first wiring 260 or displays a logo. For example, the printing unit 295 may be formed by using a screen printing method or a sputter. .

Subsequently, a protective layer 290 is formed on the upper surface of the printing unit 295 and the first electrode pattern 220.

The protective layer 290 is a layer that protects the first electrode pattern 220 such that the first electrode pattern 220 does not directly contact the input means 297. The hard coating layer and the optically transparent adhesive agent are provided. Clear Adhesive (OCA) or AR Reflective Layer (Anti Reflect Coating Layer). At this time, the hard coating layer may be formed of acrylic (Acrylic), epoxy (Epoxy), urethane (Urethane) or a combination thereof.

In addition, the protective layer 290 may be provided in the form of a film on the first electrode pattern 220 or coated in a liquid state using spin coating or the like.

Accordingly, in the method of manufacturing the touch panel 200 according to the second embodiment of the present invention, even if both surfaces of the silver salt emulsion layer formed on both surfaces of the optical filter layer 240 are exposed using the optical filter layer 240, There is an effect that can prevent affecting the silver salt emulsion layer formed on.

In addition, the manufacturing method of the touch panel 200 according to the second embodiment of the present invention by forming an electrode pattern directly on one surface of the window 210, a step of forming the electrode pattern on a separate transparent substrate and then attaching to the window By omitting, the manufacturing process can be simplified, and the overall thickness of the touch panel can be reduced.

Although the present invention has been described in detail through specific embodiments, it is intended to specifically describe the present invention, and the touch panel according to the present invention is not limited thereto, and the general knowledge of the art within the technical spirit of the present invention is provided. It is obvious that modifications and improvements are possible by those who have them. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100: touch panel 110: window
120: first electrode pattern 130: second electrode pattern
137a, 137b: detection part 139a, 139b: connection part
140: optical filter layer 150: silver salt emulsion layer
153: silver salt 155: binder
157: metal silver 160: first wiring
170: second wiring 180: mask
190: protective layer 195: printing unit
197: input means W: line width of fine pattern
X: line width of the first and second wirings P: pitch of the first and second wirings

Claims (30)

A window provided as a support;
A first electrode pattern containing silver formed by selectively exposing and developing the silver salt emulsion layer, the first electrode pattern being formed in a fine pattern on one surface of the window;
A second electrode pattern containing silver formed by selectively exposing and developing the silver salt emulsion layer, the second electrode pattern being formed in a fine pattern on the other surface of the window; And
An optical filter layer formed on at least one of the one surface of the window and the first electrode pattern and the other surface of the window and the second electrode pattern to selectively block light;
And a touch panel. The method according to claim 1,
A protective layer covering the first electrode pattern;
Touch panel further comprising. The method according to claim 2,
The protective layer is a touch panel, characterized in that the hard coating layer, optically transparent adhesive or AR coating layer. The method according to claim 3,
The hard coating layer is a touch panel, characterized in that formed of any one or a combination of acrylic (Acrylic), epoxy (Epoxy), and urethane (Urethane). The method according to claim 1,
A first wiring formed on one surface of the window and connected to the first electrode pattern; And
A second wiring formed on the other surface of the window and connected to the second electrode pattern;
Touch panel further comprising. The method according to claim 5,
The first wiring contains silver formed by selectively exposing and developing the silver salt emulsion layer, and is formed integrally with the first electrode pattern.
And wherein the second wiring contains silver formed by selectively exposing and developing the silver salt emulsion layer, and is formed integrally with the second electrode pattern. The method according to claim 5,
Further comprising a control unit provided in the window,
And the first wiring and the second wiring are connected to the controller. The method of claim 7,
The control unit,
A first control unit provided on one surface of the window; And
A second control unit provided on the other surface of the window;
Lt; / RTI >
The first wiring is connected to the first control unit,
And the second wiring is connected to the second controller. The method according to claim 5,
A printing unit covering the first wiring;
Touch panel further comprising. The method according to claim 1,
The silver salt emulsion layer is a touch panel comprising a silver salt and a binder. The method of claim 10,
The silver salt is a touch panel, characterized in that the silver halide. The method according to claim 1,
The optical filter layer is characterized in that the touch panel to block ultraviolet rays. The method according to claim 1,
The optical filter layer is a touch panel, characterized in that to block the I-line, H-line or G-line in the ultraviolet. The method according to claim 1,
The optical filter layer is a touch panel, characterized in that formed with a UV blocking inorganic material or UV blocking organic material. The method according to claim 1,
A touch panel, wherein the silver salt emulsion layer is exposed using a proximity or contact exposure machine. The method according to claim 1,
The sheet resistance of the first electrode pattern or the sheet resistance of the second electrode pattern is lower than 150Ω / □ touch panel. The method according to claim 1,
The sheet resistance of the first electrode pattern or the sheet resistance of the second electrode pattern is 0.1 to 50Ω / □ touch panel. The method according to claim 1,
The line width of the fine pattern of the first electrode pattern or the line width of the fine pattern of the second electrode pattern is 3 to 7μm. The method according to claim 1,
And a transmittance of the touch panel is higher than 85%. The method according to claim 1,
The aperture ratio of the first electrode pattern or the aperture ratio of the second electrode pattern is higher than 95%. The method according to claim 1,
The thickness of the first electrode pattern or the thickness of the second electrode pattern is a touch panel, characterized in that narrower than 2μm. The method according to claim 5,
The line width of the first wiring or the line width of the second wiring is narrower than 50μm. The method according to claim 5,
The pitch of the first wiring or the pitch of the second wiring is less than 50μm touch panel. A window provided as a support;
A second electrode pattern containing silver formed by selectively exposing and developing a second silver salt emulsion layer, the second electrode pattern being formed in a fine pattern on one surface of the window;
A first electrode pattern containing silver formed by selectively exposing and developing a first silver salt emulsion layer, the first electrode pattern being formed as a fine pattern on one surface of the second electrode pattern in one direction of the window; And
An optical filter layer formed between the first silver salt emulsion layer and the second silver salt emulsion layer to selectively block exposure light;
Touch panel comprising a. 27. The method of claim 24,
A second wiring formed on one surface of the window and connected to the second electrode pattern; And
A first wiring formed on one surface of the second electrode pattern and connected to the first electrode pattern;
Touch panel further comprising. 27. The method of claim 24,
The first silver salt emulsion layer and the second silver salt emulsion layer comprises a silver salt and a binder,
The silver salts include inorganic silver salts or organic silver salts,
The binder is gelatin, polyvinyl alcohol (PVA), polyvinylpyrrolidone (PVP), polysaccharides such as starch, cellulose and its derivatives, polyethylene oxide, polyvinylamine, chitosan, polylysine, polyacrylic acid, polyalginic acid, poly Touch panel comprising any one or a combination of hyaluronic acid, and carboxycellulose. 27. The method of claim 24,
The first electrode pattern or the second electrode pattern is silver, the touch panel, characterized in that formed in any one of the pattern form of bar, tooth type, diamond type, and mesh type. 28. The method of claim 27,
The mesh type is a touch panel, characterized in that the rectangular, rhombus, circular or elliptic pattern is provided in a repeating structure. 27. The method of claim 24,
The exposure light is UV, the optical filter layer is a touch panel, characterized in that it comprises a UV blocking inorganic material or UV blocking organic material. 26. The method of claim 25,
A printing unit covering the first wiring; And
A protective layer covering the printed portion and the first electrode pattern;
Touch panel further comprising.

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