KR101658932B1 - Touch Screen Pannel - Google Patents

Abstract

The present invention relates to a touch screen panel, and more particularly, to a touch screen panel comprising a reinforcement film having a first elongation, a metal pattern layer formed on one surface of the reinforcement film and having a second elongation, The reinforcing film and the metal pattern layer are prevented from being separated from each other even if the reinforcing film and the metal pattern layer have different elongation ratios when the touch screen panel is folded, To a touch screen panel suitable for flexible touch screen panels.

Description

A touch screen panel {Touch Screen Pannel}

The present invention relates to a touch screen panel, and more particularly, to a touch screen panel comprising a reinforcement film having a first elongation, a metal pattern layer formed on one surface of the reinforcement film and having a second elongation, The present invention relates to a touch screen panel having a vertically curved shape.

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.

Conventionally, the metal pattern layers formed on the reinforcing film are arranged in a straight lattice pattern.

Accordingly, when the reinforcing film is applied to the flexible touch screen panel, the metal pattern layer is separated when the touch screen panel is bent due to the difference in elongation of the metal pattern layer formed on the reinforcing film and the reinforcing film.

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

Disclosure of the Invention The present invention has been conceived to solve the above-described problems, and it is an object of the present invention to provide a reinforcing film and a metal pattern layer that can be separated from each other even if the reinforcing film and the metal pattern layer have different elongation rates, It is an object of the present invention to provide a touch screen panel suitable for flexible touch screen panels.

According to an aspect of the present invention, there is provided a touch screen panel including: a reinforcement film having a first elongation; a metal pattern layer formed on one surface of the reinforcement film and having a second elongation; And has a shape curved in the left-right direction or the up-down direction.

The metal pattern layer may have a blackening layer formed between the reinforcing film and the metal pattern layer and having a third elongation ratio between the first elongation and the second elongation.

The metal pattern layer may have a shape in which the 'c' shape and the 'inverted c' shape are continuously repeated, or the shape of the '<' shape and the shape of the '>' shape are repeated continuously, Shaped shape and a shape in which at least one of 'c' or '<' or 'C' shape is continuously and repeatedly formed.

And a blackening layer formed between the reinforcing film and the metal pattern layer and having a third elongation ratio between the first elongation and the second elongation, wherein the blackening layer is formed to have the same shape as the shape of the metal pattern layer .

According to an aspect of the present invention, there is provided a touch screen panel including a substrate for a touch screen panel, and a metal pattern layer formed on the substrate for the touch screen panel, And the metal pattern layer has a shape that is curved in the left-right direction or the up-down direction.

According to an aspect of the present invention, there is provided a touch screen panel including: a reinforcement film having a first elongation; and a metal pattern layer formed on the reinforcement film and having a second elongation greater than the first elongation, And the longitudinal and / or longitudinal length of the reinforcing film on which the metal pattern layer is formed is smaller than the length of the metal pattern layer.

The metal pattern layers may be formed in a plurality of spaced apart patterns, and the shape of the metal pattern layer in the lateral direction and the shape of the metal pattern layer in the longitudinal direction may be different from each other.

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

A reinforcing film having a first elongation percentage; and a metal pattern layer formed on one surface of the reinforcing film and having a second elongation percentage, wherein the metal pattern layer has a shape bent leftward or rightward or upward and downward, It is possible to prevent the reinforcing film and the metal pattern layer from being separated and broken even if the reinforcing film and the metal pattern layer are folded, and the metal pattern layer can be stretched more than the reinforcing film even if the stretching ratio is different. , Flexible touch screen panel.

And a blackening layer formed between the reinforcing film and the metal pattern layer and having a third elongation ratio between the first elongation percentage and the second elongation percentage to reduce reflection by the metal, There is an effect that the transparency is higher.

1 is a sectional view of a touch screen panel according to a preferred embodiment of the present invention;
2 to 4 are enlarged plan views of a touch screen panel metal pattern layer according to a preferred embodiment of the present invention.
5 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.

As shown in FIGS. 1 to 4, the touch screen panel of this embodiment includes a reinforcing film 10 having a first elongation percentage, a metal pattern 20 formed on one surface of the reinforcing film 10, Layer 22, and the metal pattern layer 22 has a shape curved in the left-right direction or the up-down direction.

The reinforcing film 10 is provided as a flat plate flat on the upper and lower surfaces, and has a first elongation.

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 metal pattern layer 22 is formed on one surface (1: upper surface) of the reinforcing film 10. When the actual touch screen panel is used, the metal pattern layer 22 is disposed inside the reinforcing film 10 when the portion to be touched by the user is referred to as the outside.

The metal pattern layer 22 is formed of a metal material and is formed in a strip shape to form an electrode circuit.

The metal pattern layer 22 has a second elongation different from the first elongation. The second elongation is greater than the first elongation.

The metal pattern layer 22 is formed on one side 1 of the reinforcing film 10 by sputtering or intaglio patterning.

A plurality of metal pattern layers 22 are formed in the same pattern shape.

The metal pattern layers 22 may be arranged in a lattice pattern in the same pattern shape.

The metal pattern layer 22 may be curved so as to have a curved shape such as a waveform in the left-right direction. As described above, the metal pattern layer 22 may be formed to be bent in the vertical direction as well.

Therefore, the length and / or length of the reinforcing film 10 on which the metal pattern layer 22 is formed is smaller than the length of the metal pattern layer 22.

Specifically, the length of the metal pattern layer 22 in the transverse direction is longer than the transverse length of the reinforcing film 10. [ Alternatively, the length of the metal pattern layer 22 in the longitudinal direction is longer than the longitudinal length of the reinforcing film 10.

More specifically, the metal pattern layer 22 may be formed of a plurality of curved lines when viewed in plan. Several curves can be arranged in a lattice.

As shown in FIG. 2, the metal pattern layer 22 may have a shape in which the 'c' shape and the 'inverted c' shape are continuously repeated.

As shown in FIG. 3, the metal pattern layer 22 'may have a shape in which' <'shape and'> 'shape are continuously repeated.

As shown in FIG. 4, the metal pattern layer 22 '' may have a shape in which the 'C' shape and the 'inverted' shape are continuously and repeatedly formed.

In addition, the metal pattern layer 22 may have a shape in which at least one of 'c', '<' or 'C' shape is repeated continuously.

2 to 4, the shape of the metal pattern layer 22 in the lateral direction and the shape of the metal pattern layer 22 in the longitudinal direction may be different from each other.

As described above, the metal pattern layer 22 has a curved shape in the left-right direction or the up-down direction, so that even if the reinforcing film 10 and the metal pattern layer 22 are elongated when the touch screen panel is folded, ) Can be increased more than the reinforcing film (10). Therefore, the reinforcement film 10 and the metal pattern layer 22 are prevented from being separated and broken, and at the same time, the reinforcement film 10 and the metal pattern layer 22 can be reduced in weight, which is suitable for large-sized and suitable for flexible touch screen panels.

And a blackening layer (21) formed between the reinforcing film (10) and the metal pattern layer (22) and having a third elongation ratio between the first elongation and the second elongation. The blackening layer 21 is formed on the upper surface of the reinforcing film 10. The blackening layer 21 may be formed to have the same shape as that of the metal pattern layer 22.

The blackening layer 21 is formed of a metal material 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 touch screen panel may include only the metal pattern layer 22 without the blackening layer 21.

Also, unlike the above, the substrate for a touch screen panel may not be a reinforcement film but may be another material that can be applied to a flexible touch screen. Thus, when another material is applied to a substrate for a touch screen panel, the elongation of the substrate for the touch screen panel is made smaller than the elongation of the metal pattern layer.

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
21: Blackening layer
22: metal pattern layer

Claims (12)

A reinforcing film having a first elongation;
And a metal pattern layer formed on one surface of the reinforcing film and having a second elongation different from the first elongation,
Wherein the metal pattern layer has a shape curved in the left-right direction or the up-down direction,
And a blackening layer formed between the reinforcing film and the metal pattern layer and having a third elongation ratio between the first elongation percentage and the second elongation percentage.
The method according to claim 1,
Wherein the metal pattern layer has a curved shape in the left-right direction or the up-down direction.
delete The method according to claim 1,
Wherein the metal pattern layer has a shape in which a 'c' shape and an 'inverted c' shape are continuously repeated.
The method according to claim 1,
Wherein the metal pattern layer has a shape in which '<' shape and '>' shape are continuously repeated.
The method according to claim 1,
Wherein the metal pattern layer has a shape in which 'C' shape and 'inverted' shape are continuously repeated.
The method according to claim 1,
Wherein the metal pattern layer has a shape in which at least one of 'c', '<' or 'C' shape is continuously repeated.
The method according to claim 1,
Wherein the blackening layer is formed to be the same as the shape of the metal pattern layer.
A substrate for a touch screen panel;
And a metal pattern layer formed on the substrate for the touch screen panel,
Wherein the first elongation percentage of the base material for the touch screen panel is formed to be smaller than the second elongation percentage of the metal pattern layer and the metal pattern layer has a shape bent leftward or rightward or upward and downward,
And a blackening layer formed between the substrate for the touch screen panel and the metal pattern layer and having a third elongation ratio between the first elongation percentage and the second elongation percentage.
A reinforcing film having a first elongation;
A metal pattern layer is formed on the reinforcing film,
Wherein the metal pattern layer has a second elongation having a value greater than the first elongation,
Wherein the width and / or length of the reinforcing film on which the metal pattern layer is formed is smaller than the length of the metal pattern layer,
And a blackening layer formed between the reinforcing film and the metal pattern layer and having a third elongation ratio between the first elongation percentage and the second elongation percentage.
11. The method of claim 10,
Wherein a plurality of the metal pattern layers are formed in the same pattern.
11. The method of claim 10,
Wherein the shape of the metal pattern layer in the lateral direction and the shape of the metal pattern layer in the longitudinal direction are different from each other.

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