KR20160063759A - Touch Screen Pannel and Method for manufacturing Touch Screen Pannel - Google Patents

Abstract

The present invention relates to a touch screen panel and a manufacturing method of the same and, more specifically, to a touch screen panel with a reinforced film on which one surface and a surface opposite to the one surface have different roughness. Therefore, adhesive force of a layer attached to the reinforced film may be enhanced. At the same time, enlarging a size of the touch screen panel is appropriate, as the same may be lighter. In addition, the touch screen panel is also appropriate for a flexible touch screen panel.

Description

Technical Field [0001] The present invention relates to a touch screen panel and a touch screen panel manufacturing method,

The present invention relates to a touch screen panel, and more particularly, to a touch screen panel in which a surface of a reinforcing film and a surface of the reinforcing film opposite to the one surface have different roughnesses.

2. Description of the Related Art In recent years, various input devices such as a keyboard, a mouse, a trackball, a joystick, and a digitizer have been used to configure an interface between a user and a home appliance or various information communication devices.

However, the use of the above-described input device has a drawback in that it is required to learn how to use it and occupies a space, thereby making it difficult to improve the completeness of the product. Therefore, there is a growing demand for an input device that is convenient and simple and can reduce malfunctions.

In accordance with such a demand, a touch screen panel has been proposed in which a user directly touches a screen with a hand or a pen to input information.

The touch screen panel is simple, has little malfunction, can be input without using a separate input device, and can be operated quickly and easily through the contents displayed on the screen. .

In the touch screen panel, a metal electrode is formed on a top plate or a bottom plate according to a method of detecting a touched portion, and a resistive film type in which a touched position is determined as a voltage gradient according to a resistance a capacitive type in which an equal potential is formed on a conductive film and a touched portion is sensed by detecting a position where a voltage change of the upper and lower plates due to a touch is sensed and an LC value And an electromagnetic type in which a touch is detected by sensing the touch portion. In addition, an optical method, an ultrasonic method, and the like are known.

Generally, a touch screen panel is manufactured by attaching a transparent electrode film having a transparent electrode on a surface thereof to a cover glass.

However, when glass is used as a substrate, the weight becomes heavier when it is large-sized, and it is difficult to make a flexible touch screen.

Therefore, in order to solve such a problem, the touch screen panel for a display device of the prior art 1 (Korean Patent Laid-Open Publication No. 2013-0116784) includes an electrode portion A, a routing wiring portion B) and a pad portion (C).

The electrode unit A includes a plurality of first electrodes RS or sensing electrodes RS (hereinafter referred to as first electrodes) formed on one surface of the substrate 100 and a plurality of first electrodes RS A plurality of second electrodes TS or driving electrodes TS (hereinafter, referred to as second electrodes) formed so as to cross the plurality of first electrodes RS, (HC2).

The first electrodes RS are formed on one surface of the substrate 100 and arranged in a first direction (e.g., the Y-axis direction). The plurality of second electrodes TS are formed on the insulating layer HC1 formed to cover the first electrodes RS and are formed in a second direction intersecting with the first electrodes RS Axis direction).

That is, the first and second electrodes RS and TS constituting the touch screen panel are formed on one side of the substrate 100, are electrically insulated from each other by the insulating layer HC1, A hard coat layer HC2 of the same material as the insulating layer HC1 is formed.

In the touch screen panel, the substrate 100 is formed of a flexible plastic material such as PET. The first and second electrodes RS and TS are formed of indium tin oxide (ITO), indium zinc oxide (IZO), indium zinc oxide Gallium-doped ZincOxide, metal Nano Wire, or carbon-based transparent electrodes.

The insulating layer HC1 and the hard coat layer HC2 are formed of an ultraviolet curable resin such as a general ultraviolet curable resin excellent in light curability, a nano silica mixed ultraviolet curable resin, an SSQ based ultraviolet curable resin, or may be formed of a thermosetting resin .

The routing wiring portion B includes a plurality of first routing wiring lines RW1 and a plurality of second routing wiring lines RW2 formed on the insulating layer HC1 outside the electrode portion A of the substrate 100 .

The plurality of first routing wirings RW1 are respectively connected to the plurality of first electrodes RS exposed through the contact holes CH of the insulating layer HC1 and the plurality of second routing wirings RW2, Are directly connected to the plurality of second electrodes TS formed on the insulating layer HC1, respectively.

A hard coat layer HC2 extending from the electrode portion A is formed on the other surface of the substrate 100 corresponding to the region where the first and second routing wirings RW1 and RW2 are formed.

The first and second routing wirings RW1 and RW2 are formed of a metal material such as Al, AlNd, Mo, MoTi, Cu, Cr, Ag, or Ag series alloys.

The pad portion C includes a plurality of first pads RP1 and a plurality of second pads RP2 formed adjacent to the routing wiring portion B of the substrate 100. [

The plurality of first pads RP1 are respectively connected to the plurality of first electrodes RS through the plurality of first routing wirings RW1 and the plurality of second pads RP2 are connected to the plurality of second And are respectively connected to the plurality of second electrodes TS through the routing wirings RW2. The first and second pads RP1 and RP2 are also formed of a metal material such as Al, AlNd, Mo, MoTi, Cu, Cr, Ag and Ag alloys.

Korean Patent Laid-Open Publication No. 2013-0050249 (hereinafter referred to as "Prior Art 2") discloses that a reinforcing film is used instead of glass in a touch screen panel. In Conventional Technique 2, it is shown that a base layer having an arithmetic mean surface roughness of usually 0.02 or more and 0.06 or less can be used. The substrate layer can be subjected to a mat treatment if necessary. The arithmetic mean surface roughness of the base layer subjected to such matting treatment may be 0.07 or more and 2 or less, more preferably 0.1 or more and 1 or less. The surface roughness of the base layer is controlled to be within such a range so that the occurrence of scratches in the treatment after the production of the original master film is prevented and the handling property is improved.

However, when such a reinforcement film is used as a substrate of a touch screen panel, there is a problem that the adhesion of the metal pattern adhered to the reinforcement film is deteriorated.

Korean Patent Laid-Open Publication No. 2013-0116784 Korean Patent Laid-Open Publication No. 2013-0050249

The present invention has been devised to solve the above-mentioned problems, and it is an object of the present invention to provide a touch screen panel suitable for a flexible touch screen panel, which can improve the adhesion of a layer adhered to a reinforcement film, It has its purpose.

According to an aspect of the present invention, there is provided a touch screen panel including: a reinforcing film; and a pattern layer formed on one surface of the reinforcing film, wherein a roughness of the opposite surface of the reinforcing film, They are different from each other.

One side of the reinforcing film may be formed to be rougher than the opposite side of the reinforcing film.

According to another aspect of the present invention, there is provided a method of manufacturing a touch screen panel, the method comprising: forming a reinforcing film and a reinforcing film having different roughnesses on opposite sides of the reinforcing film; The method comprising the steps of:

The reinforcing film may have one side more rough than the opposite side of the reinforcing film and the pattern layer may be adhered to the one side of the reinforcing film. The pattern layer may be formed by sputtering, thermal evaporation, ion beam evaporation, arc ion plating, To the one side of the reinforcing film.

According to the touch screen panel of the present invention as described above, the following effects can be obtained.

It is possible to improve the adhesion of the layer (pattern layer or the like) adhered to the reinforcing film by making the one surface of the reinforcing film and the reinforcing film have different roughnesses from the surface opposite to the one surface, Suitable for flexible touch screen panels.

The pattern layer is bonded to one surface of the reinforcing film through sputtering, so that the adhesive force can be further improved.

1 is a sectional view of a touch screen panel according to a preferred embodiment of the present invention;
2 is a sectional view of a touch screen panel according to another embodiment of the present invention;
3 is a cross-sectional view of a touch screen panel according to another embodiment of the present invention.
4 is a plan view of a conventional touch screen panel for a display device.

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

For reference, the same components as those of the conventional art will be described with reference to the above-described prior art, and a detailed description thereof will be omitted.

1, the touch screen panel of the present embodiment includes a reinforcing film 10 and a pattern layer 20 formed on one surface 1 of the reinforcing film 10, and the reinforcing film 10 (1) of the reinforcing film (10) and the opposite surface (2) of the reinforcing film (10) are different from each other.

The reinforcing film 10 is provided as a flat plate whose upper and lower surfaces are flat.

Since the reinforcement film 10 needs to transmit a light ray, it is formed to be transparent, particularly colorless transparent.

The main component constituting the reinforcement film 10 is not particularly limited, but typically it can be selected from the group consisting of a polycarbonate resin, a cycloolefin resin, an acrylic resin, a polypropylene resin and a polyethylene terephthalate resin.

These synthetic resins have excellent optical transparency and can transmit light rays well.

Among them, the main component constituting the reinforcement film 10 may be a polycarbonate resin, a cycloolefin resin or a polyethylene terephthalate resin.

The reinforcement film 10 may contain other optional components as long as it does not impair the transparency and the desired strength. The reinforcing film 10 preferably contains 90 mass% or more of the main component composed of the synthetic resin, more preferably 98 mass% or more.

Examples of the optional components include an ultraviolet ray inhibitor, a lubricant, a processing aid, a plasticizer, an impact resistance auxiliary, a retardation reducing agent, a gloss removing agent, an antibacterial agent and an antifungal agent.

The polycarbonate resin forming the reinforcing film 10 is not particularly limited and may be either a straight chain polycarbonate resin or a branched polycarbonate resin, and may be a linear polycarbonate resin and a branched polycarbonate resin Based resin.

The linear polycarbonate resin is a straight chain aromatic polycarbonate resin prepared by a known phosgene method or a melting method and is composed of a carbonate component and a diphenol component.

Examples of the precursor for introducing the carbonate component include phosgene, diphenyl carbonate, and the like. Examples of the diphenol include 2,2-bis (4-hydroxyphenyl) propane, 2,2-bis (3,5-dimethyl- Bis (4-hydroxyphenyl) decane, 1,1-bis (4-hydroxyphenyl) cyclohexane, 1,1- (3,5-dimethyl-4-hydroxyphenyl) cyclododecane, 4,4'-di (4-hydroxyphenyl) propane, 1,1- Hydroxydiphenyl ether, 4,4'-thiodiphenol, 4,4'-dihydroxy-3,3-dichlorodiphenyl ether, and the like. These may be used alone or in combination of two or more. Such a linear polycarbonate resin is produced, for example, by the method described in U.S. Patent No. 3989672. The refractive index may be 1.57 or more and 1.59 or less.

The branched polycarbonate resin is a polycarbonate resin produced by using a branching agent. Examples of the branching agent include fluoroglycine, trimellitic acid, 1,1,1-tris (4-hydroxyphenyl) ethane, 1,1,2-tris (4-hydroxyphenyl) ethane, 1,1,2-tris (4-hydroxyphenyl) propane, Tris (4-hydroxyphenyl) propane, 1,1,1-tris (2-methyl-4-hydroxyphenyl) methane, 1,1,1- Phenyl) ethane, 1,1,1-tris (3-methyl-4-hydroxyphenyl) methane, 1,1,1- Tris (3,5-dimethyl-4-hydroxyphenyl) methane, 1,1,1-tris (3,5- 4-hydroxyphenyl) methane, 1,1,1-tris (3-chloro-4-hydroxyphenyl) ethane, 1,1,1- 1,1,1-tris (3,5-dichloro-4-hydroxyphenyl) ethane, 1, 1,1,1-tris (3-bromo-4-hydroxyphenyl) methane, 1,1,1- Dibromo-4-hydroxyphenyl) methane, 1,1,1-tris (3,5-dibromo-4-hydroxyphenyl) ethane, 4,4'-dihydroxy- - dihydroxydiphenyl ether, and the like.

Such a branched polycarbonate-based resin can be produced, for example, as disclosed in JP-A-03-182524, by reacting an aromatic diphenol, a polycarbonate oligomer derived from the branching agent and phosgene, an aromatic diphenol, Is reacted with stirring so as to become turbulent flow, and at the time when the viscosity of the reaction mixture is increased, an aqueous alkali solution is added and the reaction mixture is reacted as a laminar flow.

The branch polycarbonate resin of the resin composition is contained in the polycarbonate resin in the range of 5% by mass or more and 80% by mass or less, and may be in the range of 10% by mass or more and 60% by mass or less.

This is because when the branched polycarbonate resin is less than 10% by mass, the elongation viscosity is lowered and molding in extrusion molding becomes difficult. When the amount is more than 80% by mass, the shear viscosity of the resin increases and molding processability decreases.

The cycloolefin-based resin forming the reinforcing film 10 is not particularly limited as long as it has a unit of a monomer comprising a cyclic olefin (cycloolefin). As the cycloolefin-based resin used for the reinforcing film 10, a cycloolefin polymer (COP) or a cycloolefin copolymer (COC) may be used, and it may be a cycloolefin copolymer.

The cycloolefin copolymer refers to an amorphous cycloolefin resin that is a copolymer of a cyclic olefin and an olefin such as ethylene. As the cyclic olefin, polycyclic cyclic olefin and monocyclic cyclic olefin exist. Examples of such polycyclic cyclic olefins include norbornene, methyl norbornene, dimethyl norbornene, ethyl norbornene, ethylidene norbornene, butyl norbornene, dicyclopentadiene, dihydrodicyclopentadiene, methyl Dicyclopentadiene, dimethyldicyclopentadiene, tetracyclododecene, methyltetracyclododecene, dimethylcyclotetradodecene, tricyclopentadiene, tetracyclopentadiene, and the like. Examples of the monocyclic cyclic olefin include cyclobutene, cyclopentene, cyclooctene, cyclooctadiene, cyclooctatriene, cyclododecatriene, and the like.

The acrylic resin forming the reinforcing film 10 is a resin having a skeleton derived from acrylic acid or methacrylic acid. Examples of the acrylic resin include, but are not particularly limited to, poly (meth) acrylic acid esters such as polymethyl methacrylate, methyl methacrylate- (meth) acrylic acid copolymer, methacrylic acid methyl- (meth) (Meth) acrylic acid ester-methacrylic acid copolymer, a (meth) acrylic acid methyl-styrene copolymer, a polymer having an alicyclic hydrocarbon group (for example, methyl methacrylate-cyclohexyl methacrylate copolymer, methacrylic acid Methyl (meth) acrylate norbornyl copolymer). Among these acrylic resins, poly (meth) acrylate C1-6 alkyl such as poly (meth) acrylate is preferable, and methyl methacrylate resin is more preferable.

The polypropylene resin forming the reinforcing film 10 is a resin having a skeleton derived from propylene. Examples of polypropylene resins include, but are not limited to, homopolymers of propylene or copolymers of propylene and at least one monomer selected from the group consisting of ethylene and alpha -olefins of 4 to 12 carbon atoms.

The polyethylene terephthalate resin forming the reinforcing film 10 is a polymer obtained by the reaction of terephthalic acid with ethylene glycol. The polyethylene terephthalate resin may contain other comonomers, and it is preferable that the repeating unit of the polyethylene terephthalate is 80 mol% or more. Polyethylene terephthalate can be produced, for example, by introducing dimethyl terephthalate and ethylene glycol into a reactor, gradually changing the internal temperature to transesterify, transferring the reaction product to a polymerization reactor, and conducting polymerization under high temperature and vacuum conditions have.

The roughness of one surface 1 (the upper surface) of the reinforcing film 10 and that of the reinforcing film 10 opposite to the one surface 1 (lower surface 2) are different from each other.

The roughness of the reinforcing film 10 can be formed through surface treatment.

For example, the reinforcing film 10 may be surface treated through a polishing process using a buff or sandpaper to control the roughness. The buff can be provided as a sandpaper.

When the surface of the reinforcing film 10 is polished by using the buff, a plurality of grooves are formed on the surface of the reinforcing film 10 so as to be continuous in the polishing direction of the buff.

As described above, the surface treatment can be performed by a simple polishing process using a buff.

Alternatively, the reinforcing film 10 may be surface-treated through a method of forming a black complex by a vacuum etching method or a chemical to control the roughness.

The roughness can be adjusted in units of micrometers.

Specifically, one side 1 of the reinforcing film 10 is formed to be rougher than the opposite side 2 of the reinforcing film 10.

The pattern layer 20 is formed on one side 1 of the reinforcing film 10.

The pattern layer 20 is formed of a metal material and forms an electrode circuit.

The pattern layer 20 is bonded to one surface 1 of the reinforcing film 10 through sputtering.

The pattern layer 20 may be adhered to one surface 1 of the reinforcing film 10 through sputtering, thermal evaporation, ion beam evaporation, arc ion plating, or compounding.

The pattern layer 20 includes a base circuit layer 21 adhered to one surface 1 of the reinforcing film 10 and a metal pattern layer 22 formed on the base circuit layer 21. [

The base circuit layer 21 may be a blackening layer made of a metal having a black-based color. As a result, it is possible to easily realize a microcircuit having no visibility with the eyes of a person, and thus the transparency is high.

As described above, the pattern layer 20 may include only the metal pattern layer 22 without the base circuit layer 21.

As described above, the pattern layer 20 is adhered to the rougher surface of the reinforcing film 10, which has an advantage of improving the adhesive strength. Therefore, when applied to a flexible touch screen, the bonded state of the pattern layer 20 can be maintained even after bending several times.

Hereinafter, a method of manufacturing a touch screen panel having the above-described configuration will be described.

The method of manufacturing a touch screen panel according to the present embodiment includes the steps of forming one surface 1 of the reinforcing film 10 and the other surface 2 opposite to the one surface 1 of the reinforcing film 10 differently from each other, And forming a pattern layer (20) on one surface (1) of the reinforcing film (10).

The reinforcing film 10 is formed such that one side 1 of the reinforcing film 10 is rougher than the opposite side 2 of the reinforcing film 10.

The pattern layer 20 is bonded to one surface 1 of the reinforcing film 10 through sputtering.

2, a blackening layer 23 may be formed on the surface (upper surface) of the metal pattern layer 22. This blackening layer 23 reduces the reflection of the pattern layer 20 by the metal, making it difficult for the human eye to recognize.

3, the pattern layer 20 may not include the base circuit layer 21 but may include only the metal pattern layer 22. In this case,

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 present invention as defined by the following claims .

DESCRIPTION OF REFERENCE NUMERALS
1: One side
2: opposite face
10: reinforced film
20: pattern layer
21: Base circuit layer
22: metal pattern layer

Claims (5)

Reinforced film;
And a pattern layer formed on one surface of the reinforcing film,
Wherein one surface of the reinforcing film and the surface roughness of the opposite surface of the reinforcing film are different from each other.
The method according to claim 1,
Wherein one side of the reinforcing film is rougher than the opposite side of the reinforcing film.
Forming a reinforcing film having a roughness different from that of the opposite surface of the reinforcing film;
And forming a pattern layer on one side of the reinforcing film.
The method of claim 3,
One side of the reinforcing film is formed to be rougher than the opposite side of the reinforcing film,
Wherein the pattern layer is adhered to the one surface.
The method according to claim 3 or 4,
Wherein the pattern layer is adhered to one surface of the reinforcing film through sputtering, thermal evaporation, ion beam evaporation, arc ion plating, or compounding.

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