KR101510810B1 - Touch Panel for Implementing Touch Sensor Using Conductivity Polymer and Method for Making the Same - Google Patents

Abstract

A method to manufacture a touch panel includes a step of forming multiple first axis electrostatic electrodes, corresponding to a window area of a touch panel and separated from each other with regular gaps, as a transparent conductive layer, and forming multiple metal wires, which are border areas of the touch panel and connected to an end of each second axis electrostatic electrode, intersecting with each first axis electrostatic electrode; a step of opening an area in which an electrode part of each of the metal wires connected to an end of each of the second axis electrostatic electrodes on a layer formed of a transparent photosensitive material after forming the transparent photosensitive material on an upper surface of the touch panel; and a step of electrically connecting an end of each of the second axis electrostatic electrodes to a metal electrode part of each of the metal wires by forming a conductive polymer on the upper surface of the touch panel and then forming multiple second axis electrostatic electrodes on the conductive polymer.

Description

TECHNICAL FIELD [0001] The present invention relates to a touch panel using a conductive polymer,

The present invention relates to a method of manufacturing a touch panel, and more particularly, to a touch sensor using a conductive polymer which improves visibility by performing jumping connection outside a window region without jumping connection with a bridge in a window region of a touch panel And a manufacturing method thereof.

Generally, a touch panel is an input device that can be easily used by anyone by touching a button with a finger to operate a computer, etc. in a conversational and intuitive manner.

Such a touch panel uses a resistance film type, a capacitive type, an infrared type, an ultrasonic type, and the like, depending on the method of detecting the touch. Currently, the resistance film type is widely used. However, The use of capacitive systems will increase.

The touch panel of the capacitive type, particularly the touch screen, has an ITO (Indium Tin Oxide) structure made of a transparent conductor on a transparent insulating film such as PET (polyethylene terephthalate) or glass, and a silver paste Is laminated on top and bottom by adding an adhesive layer or an insulating layer.

Here, the ITO is made up of Y-axis ITO formed by equally spaced X-axis ITO and Y-axis Y-axis electrostatic electrodes formed with X-axis electrostatic electrodes at regular intervals on the X axis.

In the touch screen formed as above, the controller receives the touch signal corresponding to the user's touch and outputs the coordinate signal.

However, the electrostatic electrodes arranged side by side on the X axis or the Y axis are arranged with different distances from the lead wires. Since the other electrostatic electrodes are disposed therebetween, each of the electrostatic electrodes has different electrical characteristics when viewed from the portion where the lead wires are connected.

Hereinafter, the conventional art of such a touch panel will be described with reference to Figs. 1 to 4. Fig.

FIG. 1 is a view showing an X-axis electrode pattern in a conventional capacitive touch panel, FIG. 2 is a view illustrating a Y-axis electrode pattern in a conventional capacitive touch panel, and FIG. FIG. 4 is a view showing a layer structure in a state where an X-axis electrode pattern and a Y-axis electrode pattern are combined in a conventional capacitive touch panel. FIG. to be.

Fig. 1 shows a conventional bottom pattern layer and shows an X-axis electrode pattern. Fig. 2 shows a conventional top pattern layer and shows a Y-axis electrode pattern.

A top pattern having the X-axis electrostatic electrode 10 as shown in FIGS. 1 and 2 and a bottom pattern having the Y-axis electrostatic electrode 20 are fabricated, respectively, and then a window is attached to fabricate a touch panel . A plan view of the touch panel completed by this manufacturing process is shown in Fig.

3, the conventional electrostatic-type touch panel includes a top pattern having an X-axis electrostatic electrode 10 as a transmitting electrode (driving electrode) and a Y-axis electrostatic electrode 20 serving as a receiving electrode (sensing electrode) A bottom pattern is formed on the upper surface of the panel so as to form connection electrodes 30 and 40 on one side.

The layer structure of such a conventional electrostatic-type touch panel is shown in Fig.

Referring to FIG. 4, two ITO films used for a top pattern and a bottom pattern are required because a top pattern and a bottom pattern are manufactured, respectively.

Also, OCA should be added to the upper part of the ITO film. Two OCA films were required because two ITO films were used.

Therefore, the conventional touch panel has a disadvantage in that it is expensive because two ITO films and two OCA are used to make one touch panel product.

Since the conventional touch panel uses two layers as the transmitting electrode and the receiving electrode, it is difficult to reduce the thickness, high raw material cost and high process cost are generated, and the permeability is low.

In addition, the conventional touch panel is formed by a sheet by sheet method instead of a cell by cell method when laminating the top pattern layer and the bottom pattern layer. Therefore, Yield was not good. In particular, it is difficult to adjust the alignment tolerance for the layered joints, which results in poor yield and difficult tight tolerance management.

Therefore, it is necessary to develop a structure of a capacitive touch panel that can solve such a problem.

In order to solve the above problems, the present invention provides a touch sensing device that uses a conductive polymer that improves visibility by performing jumping connection with a bridge outside a window region without jumping connection with a bridge in a window region of a touch panel, Panel and a manufacturing method thereof.

An object of the present invention is to provide a touch panel and a method of manufacturing a touch sensor using a conductive polymer, which improves the visibility of the touch sensor by removing the conductivity depending on the shape of the pattern while maintaining the polymer layer.

According to an aspect of the present invention, there is provided a method of manufacturing a touch panel,

A plurality of first axial electrostatic electrodes formed corresponding to a window area of the touch panel and spaced apart at a predetermined distance from each other are formed as a transparent conductive layer and each of the first axial electrostatic electrodes spaced apart from the first axial electrostatic electrodes by a predetermined distance, Forming a plurality of metal conductive lines, which are edge regions of the touch panel, connected to one end of the electrostatic electrode as a metal layer;

A transparent photosensitive material of transparent material is formed on the upper surface of the touch panel, and then, in a layer formed of a transparent photosensitive material, a region where the metal electrode portion of each metal wire connected to one end of each second axis electrostatic electrode is opened step; And

Forming a conductive polymer on the upper surface of the touch panel and forming a plurality of second axial electrostatic electrodes made of conductive polymer and electrically connecting one end of each of the second axial electrostatic electrodes to the metal electrode portion of each metal wire, .

A method of manufacturing a touch panel according to an aspect of the present invention includes:

A plurality of first axis electrostatic electrodes formed corresponding to a window area of the touch panel and spaced apart at a predetermined distance from each other are formed of a first conductive polymer, Forming a plurality of metal wires, which are edge regions of the touch panel, connected to one end of the axial electrostatic electrode, as a metal layer;

A transparent photosensitive material of transparent material is formed on the upper surface of the touch panel, and then, in a layer formed of a transparent photosensitive material, a region where the metal electrode portion of each metal wire connected to one end of each second axis electrostatic electrode is opened step; And

A second conductive polymer is formed on the upper surface of the touch panel and a plurality of second axial electrostatic electrodes composed of the second conductive polymer are formed and electrically connected to one end of each second axial electrostatic electrode and the metal electrode portion of each metal conductive wire, As shown in FIG.

A method of manufacturing a touch panel according to an aspect of the present invention includes:

A plurality of first metal conductors, which are edge regions of a touch panel connected to one ends of a plurality of first axial electrostatic electrodes formed corresponding to the window region of the touch panel and spaced apart by a predetermined distance, are formed as metal layers, Forming a plurality of second metal conductive lines, which are edge regions of the touch panel, connected to one end of each of the second axial electrostatic electrodes spaced apart from the first axial electrostatic electrode by a predetermined distance, as a metal layer;

A first conductive polymer is formed on the upper surface of the touch panel, a plurality of first axis electrostatic electrodes made of the first conductive polymer are formed, and one end of each first axis electrostatic electrode and the metal electrode Electrical connection to the portion;

A transparent photosensitive material of transparent material is formed on the upper surface of the touch panel, and then a metal electrode portion of each second metal conductive wire connected to one end of each second axial electrostatic electrode in a layer formed of a transparent photosensitive material is positioned Opening; And

A second conductive polymer is formed on the upper surface of the touch panel and a plurality of second axial electrostatic electrodes made of the second conductive polymer are formed on the upper surface of the touch panel so that one end of each of the second axial electrostatic electrodes and the metal electrode of each second conductive wire As shown in FIG.

In the touch panel according to the present invention,

An insulator layer made of an organic insulator or an inorganic insulator;

A transparent conductive layer formed on an upper surface of the insulator layer and forming a plurality of first axis electrostatic electrodes spaced apart by a predetermined distance corresponding to a window area of the touch panel;

A plurality of first metal conductors which are edge regions of the touch panel connected to one end of the plurality of first axis electrostatic electrodes and a plurality of second metal conductors which are respectively connected to the first axis electrostatic electrodes and the second axis electrostatic electrodes A metal layer forming a plurality of second metal conductive lines which are edge regions of the touch panel connected to one end;

A transparent photosensitive material formed on the transparent conductive layer and the upper surface of the metal layer, the transparent photosensitive material being open in a region where the metal electrode portion of each second metal conductive line connected to one end of each second axial electrostatic electrode is located; And

And a conductive polymer which is formed on the upper surface of the transparent photosensitive material and forms a second axial electrostatic electrode that is spaced apart from the first axial electrostatic electrode by a predetermined distance and crossed in a perpendicular direction.

In the touch panel according to the present invention,

An insulator layer made of an organic insulator or an inorganic insulator;

A first conductive polymer formed on an upper surface of the insulator layer and forming a plurality of first axis electrostatic electrodes corresponding to a window region of the touch panel and spaced apart at a predetermined distance;

A plurality of first metal conductors which are edge regions of the touch panel connected to one end of the plurality of first axis electrostatic electrodes and a plurality of second metal conductors which are respectively connected to the first axis electrostatic electrodes and the second axis electrostatic electrodes A metal layer forming a plurality of second metal conductive lines which are edge regions of the touch panel connected to one end;

A transparent photosensitive material formed on a top surface of the first conductive polymer and the metal layer, the transparent photosensitive material being open in a region where the metal electrode portion of each second metal conductive line connected to one end of each second axial electrostatic electrode is located; And

And a second conductive polymer formed on the upper surface of the transparent photosensitive material and spaced apart from the first axis electrostatic electrodes to form respective second axis electrostatic electrodes crossing in a right angle direction.

In the touch panel according to the present invention,

An insulator layer made of an organic insulator or an inorganic insulator;

A plurality of first metal electrodes formed on an upper surface of the insulator layer and corresponding to a window region of the touch panel and connected to one end of a plurality of first axial electrostatic electrodes spaced apart by a predetermined distance, A metal layer forming a plurality of second metal conductive lines which are edge regions of the touch panel connected to one end of each of the second axial electrostatic electrodes spaced apart from the first axial electrostatic electrodes by a predetermined distance;

A first conductive polymer formed on an upper surface of the metal layer and forming a plurality of first axis electrostatic electrodes spaced apart by a predetermined distance corresponding to a window area of the touch panel;

A transparent photosensitive material formed on a top surface of the first conductive polymer and the metal layer, the transparent photosensitive material being open in a region where the metal electrode portion of each second metal conductive line connected to one end of each second axial electrostatic electrode is located; And

And a second conductive polymer formed on the upper surface of the transparent photosensitive material and spaced apart from the first axis electrostatic electrodes to form respective second axis electrostatic electrodes crossing in a right angle direction.

According to the above-described structure, the present invention can reduce the thickness of the one-layer touch sensor and reduce the raw material cost and the process cost.

The present invention is advantageous in terms of visibility by realizing a touch sensor using the characteristics of the conductive polymer, and thus an index matching layer process is not necessary.

The present invention performs jumping and bridging outside a window using a metal lead, which is an area outside a window area, without performing a bridge and jumping in a view area (a window area of a touch panel) The receiving sensitivity and visibility are improved.

The present invention not only improves the visibility of the view area, but also enhances reception sensitivity by forming only one bridge and jumping point.

The present invention has the effect of improving the productivity by simplifying the manufacturing process of the existing touch panel.

The present invention is designed to jump in a window area without jumping in a window area where visibility is a problem, and to form a bridge and a jumping point at only one place, thereby enhancing reception sensitivity.

1 is a view showing an X-axis electrode pattern in a conventional capacitive touch panel.
2 is a diagram illustrating a Y-axis electrode pattern in a conventional capacitive touch panel.
FIG. 3 is a view showing a state where an X-axis electrode pattern and a Y-axis electrode pattern are combined in a conventional capacitive touch panel.
4 is a view showing a layer structure in a state where an X-axis electrode pattern and a Y-axis electrode pattern are combined in a conventional capacitive touch panel.
5 to 7 are views illustrating a method of manufacturing a touch panel using a window outside jumping bridge technique according to a first embodiment of the present invention in a layer structure.
8 and 9 are plan views illustrating a method of manufacturing a touch panel using a window outside jumping bridge technique according to a first embodiment of the present invention.
10 is a conceptual diagram illustrating a patterning method of a conductive polymer according to an embodiment of the present invention.
11 is a view schematically showing a manufacturing method of a touch panel according to a second embodiment of the present invention.
12 is a plan view of a method of manufacturing a touch panel using a window outside jumping bridge technique according to a third embodiment of the present invention.
13 is a plan view illustrating a method of manufacturing a touch panel using a window jumping bridge technique according to a fourth embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

In the mutual capacitance type touch panel, when a driving voltage is applied to a driving unit, a mutual cap is formed between the driving unit and the sensing unit, a sensing unit senses a change in the voltage value of the mutual cap, .

The sensing part (Receive, Rx) senses whether the touch panel touches and touches the touch panel by a change in the voltage value, and a driving voltage of the touch panel is applied to the driving part (Transfer, Tx).

FIGS. 5 to 7 are views showing a layer structure in a method of manufacturing a touch panel using a window outside jumping bridge technique according to a first embodiment of the present invention, and FIGS. 8 and 9 are cross- Fig. 2 is a plan view of a method of manufacturing a touch panel using an out-of-window jumping bridge technique according to an example.

As shown in FIGS. 5A and 8A, a method of manufacturing a touch panel according to an embodiment of the present invention includes the steps of forming an index matching layer (Index Matching) on the upper surface of an insulator layer 110 A transparent conductive layer 120 is formed on the transparent conductive layer 120, and a metal layer 130 is formed on the transparent conductive layer 120. Here, the insulator layer 110 is formed of an organic insulator or an inorganic insulator of a transparent material, and the insulator of the organic insulator may be a polyimide, a polyethylene terephthalate (PET), a polyethylene naphthalate (PEN), a polycarbonate PC) and acrylic plastic material, and the inorganic insulator is made of glass material and optically processed glass material.

11, an index-matching layer 112 is formed by forming an insulating film layer using an insulating material having a refractive index difference with respect to the transparent conductive layer 120, forming an ITO (120) Or the like,

That is, the index matching layer 112 plays a role of improving the visibility phenomenon due to the difference in the reflectance of the portion where the transparent conductive layer 120 does not exist after the pattern is formed on the transparent conductive layer 120.

The index matching layer 112 is an insulating film layer having a refractive index capable of improving the visibility of the circuit of the transparent conductive layer 120 when a pattern is formed on the transparent conductive layer 120.

The index matching layer 112 means that the lower layer of the ITO 120 is subjected to optical processing so that the portion where the ITO exists and the portion where the ITO does not exist are not sensed by the eye when the ITO film of the capacitance is manufactured.

The index matching layer 112 may be made of SiO ₂ , TiO ₂ CeO ₂ or the like by a dry method (vapor deposition), or may be subjected to a chemical treatment by a wet method.

The index matching layer 112 may be formed of an insulating film layer such as SiO ₂ , TiO ₂ Ceo _{2, or} Nb ₂ O ₅ having a refractive index capable of compensating for the height of the transparent conductive layer 120, do.

The transparent conductive layer 120 is formed of a transparent conductive material such as transparent conductive oxide (TCO), and specifically includes ITO or IZO (Indium Zinc Oxide) or ITO, IZO, SnO ₂ , AZO A transparent conductive material.

The transparent conductive layer (ITO film or the like) 120 of the present invention includes an index matching layer (insulating film layer) 112 on the lower surface.

The metal layer 130 may be formed of a metal such as APC, Cu, Cu alloy, Ag, Ag alloy, Ni + Cr, Ni + Ni alloy, Mo / Ag, Mo / Al / Mo, Ni + Cr / Cu / , And a conductive material such as Ni alloy / Cu / Ni alloy, Mo / APC, Cu / Ni + Cu + Ti, Ni + Cu + Ti / Cu / Ni + Cu + Ti, And a known technique of application.

For example, the metal layer 130 may be formed of a silver paste, or copper may be deposited.

The metal layer 130 may be made of copper or aluminum in consideration of ease of manufacture and electrical conductivity.

The metal layer 130 may be formed by a known method such as laminating, vapor deposition, or coating.

5 (b), 5 (c), 5 (d) and 8 (b), the present invention is characterized in that a first photosensitive material 140 is formed on the upper surface of the metal layer 130 The first photosensitive material 140 is patterned by using a first artwork film 142 having a pattern formed thereon to form a pattern on the first photosensitive material 140 and exposed using a weak alkaline solution. To form an opening pattern (development).

However, the present invention is not limited to this, and any pattern tool having a pattern may be used, and it is also possible to use any apparatus that directly implements a pattern without a pattern tool An exposure process may be performed.

In addition, the process of forming the first photosensitive material 140 is formed by coating a liquid photoresist or laminating a dry film. In addition, when liquid type silicon or epoxy material is used, the coating process is used. When SiO ₂ or TiO ₂ insulating material is used, a deposition process can be used.

Next, as shown in FIGS. 6 (e), 6 (f) and 8 (b), the transparent conductive layer 120 And the metal layer 130 are selectively etched and the first photosensitive material 140 is removed using a strong alkali chemical to form the electrostatic electrode pattern 122 and the wiring electrode pattern 132 (etching process and peeling process) . Here, Figs. 5A to 6F are subjected to laminating, exposure, development, etching, and peeling processes by a first photolithography process.

The electrostatic electrode pattern 122 represents a Y-axis bar pattern representing a plurality of Y-axis electrostatic electrodes spaced apart from each other by a predetermined distance in a portion corresponding to a window region (screen display region) of the touch panel, Represents a touch pattern area of the user.

The wiring electrode pattern 132 is a circuit for indicating the metal conductor of the edge area of the touch panel except for the window area. The wiring electrode pattern 132 is connected outward from one end of each Y-axis electrostatic electrode or each X- And a metal electrode part of an FPCB bonding area connected to one end of the lead wire electrode and exposed to the outside and coupled to a flexible printed circuit board (FPCB).

The wiring electrode pattern 132 of the embodiment of the present invention includes a first wiring electrode pattern 132a connected to one end of each Y-axis electrostatic electrode, and a first wiring electrode pattern 132a spaced apart from each Y- And a second wiring electrode pattern 132b connected to one end of the plurality of X axis electrostatic electrodes is formed through selective etching of the metal layer 130. [

Next, as shown in FIGS. 6G and 8B, the present invention forms a metal layer (not shown) formed on the electrostatic electrode pattern 122 that is a window region of the touch panel by the secondary photolithography process 130 are selectively removed and a transparent conductive layer 120 is left (a driving unit (Transfer, Tx)). Here, the secondary photolithography process is a laminating process, a light exposure process, a developing process, an etching process, and a peeling process, which are the same processes as the above-described primary photolithography process.

Hereinafter, the photolithography process is performed through laminating, exposure, development, etching, and peeling processes, so that duplicated description is omitted.

6 (h) and 8 (c), the present invention is a method for manufacturing a wiring electrode pattern made of an electrostatic electrode pattern 122 made of a transparent conductive layer 120 and a metal layer 130 132), and then a transparent photosensitive material 150 is formed on the upper surface of the touch panel (laminating, coating, or vapor deposition process). Here, the transparent photosensitive material 150 is a photosensitive transparent insulating material, for example, a transparent dry film.

More precisely, formation of the transparent photosensitive material 150 is formed on the upper surface of the touch panel in the remaining area except the metal electrode part of the FPCB bonding area 200 to which the FPCB is bonded.

Next, as shown in FIGS. 7 (i), 7 (j) and 8 (d), the present invention provides a transparent photosensitive material 150 The window outer region 160 is selectively removed and opened.

Here, the window outer region 160 refers to a region where the metal electrode portion of the second wiring electrode pattern 132b connected to one end of the plurality of X axis electrostatic electrodes is located.

More specifically, the present invention forms and exposes (exposes) a pattern on a transparent photosensitive material 150 by UV irradiation using a second artwork film 152 having a pattern that opens a window area 160, , And an open pattern is formed on the transparent photosensitive material 150 using a weak alkaline solution (development).

7 (j) and 8 (d), a pattern formed on the transparent photosensitive material 150 is formed in a portion of the transparent photosensitive material 150 formed on the upper surface of the touch panel, ) Is an open pattern.

However, the present invention is not limited to this, and any pattern tool having a pattern for opening the window area 160 may be used. The exposure process may be performed by using a device that implements the pattern.

Next, as shown in FIG. 7 (k), the present invention forms a conductive polymer 170 on the upper surface of the touch panel. The conductive polymer 170 may be a polythiophene-based compound, a polypyrrole-based compound, a polyaniline-based compound, a polyacetylene-based compound, a polyphenylene-based compound or the like as an organic compound. Particularly, among the polythiophene compounds, the PEDOT / , And at least one of the above-described organic compounds may be mixed and used.

Further, when carbon nanotubes or the like are further mixed with the above-described organic compound, the conductivity can be increased.

7 (1) and FIG. 9, the present invention forms a transparent electrode pattern composed of the conductive polymer 170 by a wet process, and forms a transparent electrode pattern of the metal electrode portion of the FPCB bonding region 200 And a conductive polymer 170 is formed on the top surface (sensing portion (Receive, Rx)).

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The transparent electrode pattern shows an X-axis bar pattern showing a plurality of X-axis electrostatic electrodes spaced a certain distance from a plurality of Y-axis electrostatic electrodes and intersecting in a perpendicular direction.

More specifically, the present invention relates to a method of forming a conductive polymer (170) in a portion corresponding to a plurality of X-axis electrostatic electrodes by maintaining the conductivity of a portion of the conductive polymer (170) The metal electrode portion of the second wiring electrode pattern 132b located in the window outer region 160 and the metal electrode portion of the X axis electrostatic electrode 172 located on the X axis of the X axis electrostatic electrode 172 may be formed by forming the nonconductive polymer 172 (conductive polymer patterning process) The bar pattern is electrically connected.

The present invention relates to a pad for maintaining the conductivity of the conductive polymer 170 of the metal electrode portion of the FPCB bonding region 200 and for losing the conductivity of the conductive polymer 170 of the FPCB bonding region 200, And the patterning process is performed simultaneously (conductive polymer patterning process).
In another embodiment, the metal electrode portion of the FPCB bonding region 200 may further print silver on the upper surface of the applied conductive polymer 170.
Ag, Ag alloy, Ni + Cr, Ni + Ni alloy, Mo / Ag, Mo / Al / Mo, or the like may be used for the silver- Ni + Cr / Cu / Ni + Cr, Ni alloy / Cu, Ni alloy / Cu / Ni alloy, Mo / APC, Cu / Ni + Cu + Ti, Ni + Cu + Ti / And the like, and can be formed by a known technique of printing, vapor deposition, paste and application.
The conductive polymer (170) maintains conductivity by the structure of the double bond benzene ring.

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As shown in FIG. 10, when the conductive polymer 170 is reacted with the etchant 180 as shown in FIG. 10, the structure of the double bond benzene ring is boiled to form a single bond, Can be eliminated.

When the conductive polymer 170 is made of the nonconductive polymer 172, the polymer layer is maintained as it is but the conductivity is lost. Since the polymer is not restored to the double bond again without the special catalyst, the conductivity does not return to the original state.

The electroconductive polymer patterning process (X-axis electrostatic electrode patterning process + pad patterning process) using the property of the conductive polymer 170 is performed by using a wet process so that a portion corresponding to a plurality of X-axis electrostatic electrodes and an FPCB bonding region The conductive polymer 172 of the metal electrode portion of the FPCB 200 is maintained and the conductive polymer 170 of the portion not corresponding to the X axis electrostatic electrode and the portion of the conductive polymer 170 not corresponding to the metal electrode of the FPCB bonding region 200 And the nonconductive polymer 172 is made into a nonconductive polymer.

The present invention covers the FPCB bonding area 200 to which a printed circuit board is coupled with the conductive polymer 170 to prevent corrosion of the oxidation-generating area, prevent metal cracking due to external pressure, and buffer the FPCB And a separate sealing and water repellent coating process is omitted, thereby reducing the process cost.

The present invention realizes a touch sensor using the characteristics of the conductive polymer, which is excellent in terms of visibility, and thus an index matching layer process is not required.

The present invention is advantageous in terms of productivity and unit cost because the coating rate of the conductive polymer is much higher than that of ITO or metal deposition.

Although a plurality of X-axis electrostatic electrodes and Y-axis electrostatic electrodes are formed in a bar pattern, the present invention is applicable to various shapes such as square, circular, diamond, polygonal, and random patterns.

Through the manufacturing method of the touch panel, the present invention can reduce the thickness of the one-layer touch sensor and reduce the raw material cost and the process cost.

The present invention performs jumping and bridging outside a window using a metal lead, which is an area outside a window area, without performing a bridge and jumping in a view area (a window area of a touch panel) The receiving sensitivity and visibility are improved.

The present invention not only improves the visibility of the view area, but also enhances reception sensitivity by forming only one bridge and jumping point.

11 to 13 will be described in detail with reference to the main features of the first embodiment of the present invention.

11 is a view schematically showing a manufacturing method of a touch panel according to a second embodiment of the present invention.

A method of manufacturing a touch panel according to a second embodiment of the present invention is a method of manufacturing a touch panel as shown in Figs. 5 (a) to 6 (g) and 11 An index matching layer 112 and a transparent conductive layer 120 are formed on the index matching layer 112 and a metal layer 130 is formed on an upper surface of the transparent conductive layer 120. After the metal layer 130 is formed by photolithography, Axis electrostatic electrode pattern 210 and a second wiring electrode pattern 132b connected to one end of each X-axis electrostatic electrode (a driving unit (Transfer, Tx)).

At this time, the touch panel does not have a plurality of Y-axis electrostatic electrodes and a first wiring electrode pattern 132a connected to one end of each Y-axis electrostatic electrode.

Next, as shown in FIGS. 6 (h) and 11 (b), the present invention forms a transparent photosensitive material 150 of transparent material on the upper surface of the touch panel (laminating, Deposition process).

11 (c), the present invention is characterized in that a conductive polymer 170 is formed on the upper surface of a touch panel and a plurality of Y-axis electrostatic electrodes (not shown) are formed in a layer formed of the conductive polymer 170 by a wet process. (Sensing portion (Receive, Rx)).

The layer of the conductive polymer 170 is formed by a wet process so that the conductive polymer 170 of the first wiring electrode pattern 132a connected to a portion corresponding to the plurality of Y axis electrostatic electrodes and one end of each Y electrostatic electrode The conductivity of the conductive polymer 170 is maintained at the metal electrode portion of the FPCB bonding region 200 of the second wiring electrode pattern 132b and the conductivity of the conductive polymer 170 of the remaining region is lost Thereby forming a nonconductive polymer (172).

12 is a plan view of a method of manufacturing a touch panel using a window outside jumping bridge technique according to a third embodiment of the present invention.

As shown in FIGS. 12A, 12B and 12C, in the manufacturing method of the touch panel of the third embodiment of the present invention, the transparent conductive layer There is a difference in that the circuit is constituted by using the conductive polymer 170 instead of using the conductive polymer 170. [

In other words, the present invention forms a conductive polymer 170 on the upper surface of the insulator layer 110 (laminating, coating, or vapor deposition), forms a metal layer 130 on the upper surface of the conductive polymer 170, The rest of the process is the same as that of the first embodiment, so duplicate description will be omitted.

13 is a plan view illustrating a method of manufacturing a touch panel using a window jumping bridge technique according to a fourth embodiment of the present invention.

A method of manufacturing a touch panel according to a fourth embodiment of the present invention includes forming a metal layer 130 on the upper surface of an insulator layer 110 and forming a first wiring electrode pattern 132a and a second wiring electrode pattern 132b on the metal layer 130 by a photolithography process, The wiring electrode pattern is implemented by the two wiring electrode patterns 132b (metal trace implementation).

The electroconductive polymer 170 is formed on the upper surface of the touch panel, and a plurality of X-axis electrostatic electrode patterns 210 are formed by a wet process and a plurality of X-axis electrostatic electrode patterns 210 connected to one end of each X- The conductivity of the second wiring electrode pattern 132b and the metal electrode portion of the FPCB bonding region 200 of the first wiring electrode pattern 132a is maintained and the conductivity of the conductive polymer 170 is lost in the remaining region, (Fig. 13 (a), driving unit (Transfer, Tx)). At this time, in the wet process, the conductivity of the outer area 230 of the window where the metal electrode portion of the second wiring electrode pattern 132b is located is connected to the end of the plurality of Y-axis electrostatic electrodes of the first wiring electrode pattern 132a The conductivity of the polymer 170 is maintained.

Next, the present invention forms a transparent photosensitive material 150 of transparent material on the upper surface of the touch panel (FIG. 13 (b), laminating, coating or deposition process). More precisely, formation of the transparent photosensitive material 150 is formed on the upper surface of the touch panel in the remaining area except the metal electrode part of the FPCB bonding area 200 to which the FPCB is bonded.

Next, the present invention selectively removes the window area 230 out of the transparent photosensitive material 150 formed on the upper surface of the touch panel by the photolithography exposure and development process (FIG. 13 (b)) .

Next, the present invention is characterized in that a transparent photosensitive material 150 made of a transparent material is formed on the upper surface of a touch panel, and a portion corresponding to a plurality of Y-axis electrostatic electrodes in a layer formed of a transparent photosensitive material 150 by a wet process The conductivity of the metal electrode portion of the FPCB bonding region 200 to which the FPCB is coupled is maintained and the conductivity of the conductive polymer 170 is lost in the remaining region to realize the conductive polymer circuit (FIG. 13 (c) Receive, Rx)).

The first embodiment, the second embodiment and the third embodiment described above are divided into a driving part on the lower part and a sensing part on the upper part of the structure of the touch panel, but the sensing part is not limited thereto.

In addition, the present invention can realize both the driving unit or the sensing unit, the driving unit, and the sensing unit using the conductive polymer 170.

In addition, the present invention can print silver on the metal electrode portion of the FPCB bonding region 200 in a post-processing step.

The embodiments of the present invention described above are not implemented only by the apparatus and / or method, but may be implemented through a program for realizing functions corresponding to the configuration of the embodiment of the present invention, a recording medium on which the program is recorded And such an embodiment can be easily implemented by those skilled in the art from the description of the embodiments described above.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

110: insulator layer
112: index matching layer
120: transparent conductive layer
122: electrostatic electrode pattern
130: metal layer
132: wiring electrode pattern
132a: first wiring electrode pattern
132b: second wiring electrode pattern
140: 1st photosensitive material
142: 1st artwork film
150: transparent photosensitive material
152: 2nd artwork film
160: Outside the window
170: Conductive polymer
172: nonconductive polymer
180: Corrosive solution
200: FPCB bonding area
210: X-axis electrostatic electrode pattern
220: Y-axis electrostatic electrode pattern
230: Outside the window

Claims (13)

A manufacturing method of a touch panel,
A plurality of first axis electrostatic electrodes formed corresponding to a window area of the touch panel and spaced apart at intervals of a predetermined distance are formed as a transparent conductive layer and each of the first axis electrodes, Forming a plurality of metal wires, which are edge regions of the touch panel, connected to one end of the biaxial electrostatic electrode as a metal layer;
Wherein a metal electrode part of each of the metal wires connected to one end of each of the second axis electrostatic electrodes in a layer formed of the transparent photosensitive material is formed on the upper surface of the touch panel, Opening a region; And
Forming a conductive polymer on the upper surface of the touch panel and forming the plurality of second axial electrostatic electrodes made of the conductive polymer so that one end of each of the second axial electrostatic electrodes and the metal electrode portion of each of the metal conductors Step for electrically connecting
The method comprising the steps of: A manufacturing method of a touch panel,
A plurality of first axis electrostatic electrodes formed corresponding to a window area of the touch panel and spaced apart from each other by a predetermined distance, the first axis electrodes being formed of a first conductive polymer, Forming a plurality of metal wires, which are edge regions of the touch panel, connected to one end of the second axis electrostatic electrode as a metal layer;
Wherein a metal electrode part of each of the metal wires connected to one end of each of the second axis electrostatic electrodes in a layer formed of the transparent photosensitive material is formed on the upper surface of the touch panel, Opening a region; And
Forming a second conductive polymer on the upper surface of the touch panel and forming the plurality of second axial electrostatic electrodes composed of the second conductive polymer so that one end of each of the second axial electrostatic electrodes and one end of each of the metal conductors Step of electrically connecting to the metal electrode portion
The method comprising the steps of: A manufacturing method of a touch panel,
A plurality of first metal conductive lines, which are edge regions of the touch panel, connected to one end of a plurality of first axial electrostatic electrodes spaced apart at intervals of a predetermined distance corresponding to a window area of the touch panel, Forming a plurality of second metal wires as metal layers, which are the edge regions of the touch panel, connected to one end of each of the second axis electrostatic electrodes spaced apart from the first axis electrostatic electrodes by a predetermined distance;
Forming a first conductive polymer on the upper surface of the touch panel and forming the plurality of first axial electrostatic electrodes composed of the first conductive polymer so that one end of each of the first axial electrostatic electrodes and each of the first Electrically connecting to the metal electrode portion of the metal lead;
Wherein the transparent electrode layer is formed on the upper surface of the touch panel, and the metal electrode portion of each of the second metal wires, which is connected to one end of each of the second axis electrostatic electrodes in the layer formed of the transparent photosensitive material, Opening a region in which the light source is located; And
Forming a second conductive polymer on the upper surface of the touch panel and forming the plurality of second axial electrostatic electrodes composed of the second conductive polymer so that one end of each of the second axial electrostatic electrodes and each of the second metal The step of electrically connecting to the metal electrode portion of the lead
The method comprising the steps of: 4. The method according to any one of claims 1 to 3,
And a second step of forming a plurality of second electrode layers on the first electrode layer and the second electrode layer by a wet process in which a structure of a double bond benzene ring is formed by reacting with a corrosive liquid to form a single bond, A step of forming a nonconductive polymer by maintaining the conductivity of the conductive polymer and losing the conductivity of a portion of the conductive polymer not corresponding to the plurality of first axis electrostatic electrodes or the portion not corresponding to the plurality of second axis electrostatic electrodes
The method comprising the steps of: 4. The method according to any one of claims 1 to 3,
(FPCB) bonded to the flexible printed circuit board (FPCB) by a wet process in which the structure of the double bond benzene ring is reacted with the etchant to form a single bond, thereby eliminating the conductivity of the conductive polymer. Conducting a pad patterning process to make the conductive polymer of the portion not corresponding to the metal electrode of the FPCB bonding region lose its conductivity, thereby forming a nonconductive polymer;
The method comprising the steps of: 6. The method of claim 5,
Further comprising the step of forming a conductive material on the upper surface of the conductive polymer or the second conductive polymer formed on the upper surface of the metal electrode portion of the FPCB bonding region. 3. The method according to claim 1 or 2,
The forming of the metal layer may include:
A plurality of first metal conductive lines, which are the edge regions of the touch panel, connected to one end of the plurality of first axial electrostatic electrodes, are formed of the metal layer, and the plurality of first metal conductive wires are connected to one end of each of the second axial electrostatic electrodes, Forming a plurality of second metal conductive lines, which are edge regions of the touch panel, from the metal layer
The method comprising the steps of: In the touch panel,
An insulator layer made of an organic insulator or an inorganic insulator;
A transparent conductive layer formed on an upper surface of the insulator layer and forming a plurality of first axis electrostatic electrodes spaced apart by a predetermined distance corresponding to a window area of the touch panel;
A plurality of first metal conductive lines which are edge regions of the touch panel connected to one ends of the plurality of first axial electrostatic electrodes and a plurality of second metal conductive lines extending from the respective first axial conductive electrodes, A metal layer forming a plurality of second metal conductive lines which are edge regions of the touch panel connected to one end of the electrostatic electrode;
And a transparent conductive layer formed on the upper surface of the transparent conductive layer and the metal layer, the transparent conductive layer being made of a transparent transparent photosensitive material having a region where the metal electrode portion of each of the second metal conductive lines, which is connected to one end of each of the second axial electrostatic electrodes, Material; And
And a conductive polymer formed on the upper surface of the transparent photosensitive material and spaced apart from the first axis electrodes by a predetermined distance to form second axis electrodes,
. In the touch panel,
An insulator layer made of an organic insulator or an inorganic insulator;
A first conductive polymer formed on an upper surface of the insulator layer and forming a plurality of first axis electrostatic electrodes corresponding to a window area of the touch panel and spaced apart by a predetermined distance;
A plurality of first metal conductive lines which are edge regions of the touch panel connected to one ends of the plurality of first axial electrostatic electrodes and a plurality of second metal conductive lines extending from the respective first axial conductive electrodes, A metal layer forming a plurality of second metal conductive lines which are edge regions of the touch panel connected to one end of the electrostatic electrode;
Wherein the first conductive polymer and the metal layer are formed on the upper surface of the first conductive polymer layer and the second metal conductive line is connected to one end of each of the second axial electrostatic electrodes, Material; And
And a second conductive polymer formed on the upper surface of the transparent photosensitive material and spaced apart from the first axial electrostatic electrode by a predetermined distance to form respective second axial electrostatic electrodes crossing in a perpendicular direction,
. In the touch panel,
An insulator layer made of an organic insulator or an inorganic insulator;
A plurality of first axial electrostatic electrodes formed on an upper surface of the insulator layer and corresponding to a window area of the touch panel and spaced apart from each other by a predetermined distance, A plurality of second metal conductive lines, which are edge regions of the touch panel, connected to one end of each of the second axial electrostatic electrodes spaced apart from the respective first axial electrostatic electrodes by a predetermined distance, ;
A first conductive polymer formed on an upper surface of the metal layer and forming a plurality of first axis electrostatic electrodes spaced apart by a predetermined distance corresponding to a window area of the touch panel;
Wherein the first conductive polymer and the metal layer are formed on the upper surface of the first conductive polymer layer and the second metal conductive line is connected to one end of each of the second axial electrostatic electrodes, Material; And
And a second conductive polymer formed on the upper surface of the transparent photosensitive material and spaced apart from the first axial electrostatic electrode by a predetermined distance to form respective second axial electrostatic electrodes crossing in a perpendicular direction,
. 11. The method according to any one of claims 8 to 10,
The conductive polymer, the first conductive polymer, and the second conductive polymer are reacted with a corrosive liquid to form a double bond benzene ring structure, thereby forming a single bond. Axis or the portion corresponding to the plurality of second axial electrostatic electrodes, and a portion that does not correspond to the plurality of first axial electrostatic electrodes or a portion that does not correspond to the plurality of second axial electrostatic electrodes Of the conductive polymer, thereby forming a nonconductive polymer. 11. The method according to any one of claims 8 to 10,
(FPCB) bonded to the flexible printed circuit board (FPCB) by a wet process in which the structure of the double bond benzene ring is reacted with the etchant to form a single bond, thereby eliminating the conductivity of the conductive polymer. And the conductive polymer of the portion not corresponding to the metal electrode of the FPCB bonding region is lost to make the nonconductive polymer. 11. The method according to any one of claims 8 to 10,
Wherein the conductive polymer is formed on the upper surface of the metal electrode portion of the FPCB bonding region to which the flexible printed circuit board (FPCB) is bonded, or a conductive material is formed on the upper surface of the second conductive polymer.

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