KR20100095989A - Manufacturing method of electrostatic capacity type touch screen panel - Google Patents

Abstract

PURPOSE: A method of manufacturing an electrostatic capacitive touch screen panel is provided to efficiently reduce the fabrication cost of a touch screen and to remarkably reduce the fabrication processes. CONSTITUTION: First and second substrates(100,110) having first and second transparent conductive films, a screen area and inactive area are prepared on one surface of the substrates. The other surfaces of the substrates are bonded to each other through an interlayer adhesive. The first and the second metal layer for forming the first and the second outside electrode wiring are evaporated in exposure surface of the first and second transparent conductive films. The first and second transparent electrode pattern units and the first and the second outside electrode wires are formed by exposing light to and etching the both surfaces.

Description

Manufacturing method of capacitive touch screen panel {MANUFACTURING METHOD OF ELECTROSTATIC CAPACITY TYPE TOUCH SCREEN PANEL}

The present invention relates to a method of manufacturing a capacitive touch screen panel, and more particularly, to a capacitive reduction in manufacturing cost of a touch screen, and to significantly reduce a manufacturing process procedure of a touch screen panel. The present invention relates to a method of manufacturing a touch screen panel.

In general, a touch screen is an input device that can be easily used by anyone of all ages by interactively and intuitively manipulating a computer by simply touching a button displayed on a display with a finger.

As described above, resistive touch screens, capacitive touch screens, infrared touch screens, ultrasonic touch screens, and the like, are currently used for resistive touch screens, and capacitive touch screens are used to minimize the thickness of touch screens.

Here, the capacitive touch screen has an indium tin oxide (ITO) structure having a conductive floodlight plate, an electrode portion having silver powder painted on the edge of the ITO, and an insulation for insulating the lower portion of the electrode. It is composed of a coating.

On the other hand, the ITO is composed of an ITO film made of a light-transmissive resin, and an ITO coating layer having a conductive material coated on the lower portion of the ITO film.

In the conventional capacitive touch screen as described above, when the upper surface of the ITO is touched with a finger, each electrode provided at four sides according to a change in capacitance through the finger detects it so that the touch position can be detected. will be.

However, the following problems occur in the manufacturing process of the conventional capacitive touch screen panel.

First, after patterning of individual touch screens, there is a problem that it is difficult to maintain precise confuciation during lamination between layers. That is, signal interference and aperture ratio due to shift or overlap may increase.

Second, there is a problem in that it is difficult to maintain a precise alignment tolerance between the ITO and the outer electrode part. That is, precise process control is difficult due to screen printing (Ag Paste) work through the outer reference hole, and it is difficult to check with the naked eye due to the characteristics of ITO.

Third, there is a problem that a crack may occur in the ITO fine line width by a high temperature curing process of Ag Paste after screen printing.

Fourth, there is a problem that a large amount of defects such as bubbles, foreign matters, scratches, etc. may occur due to lamination between layers in a sheet state.

Fifth, the film in the sheet (Sheet) state before the lamination (Film) is thin, the handling is difficult, there is a problem that the wrinkles may occur poor.

The present invention has been made to solve the above-mentioned problems, an object of the present invention is to reduce the manufacturing cost of the touch screen efficiently, and to reduce the manufacturing process procedure of the touch screen panel of the capacitive method The present invention provides a method for manufacturing a touch screen panel.

In order to achieve the above object, in the first aspect of the present invention, first and second transparent conductive films for forming first and second transparent electrode pattern portions are formed on one side, respectively, and have a screen area and an inactive area. And preparing a second substrate; Bonding the other sides of the first and second substrates together with an interlayer adhesive; Depositing first and second metal layers for forming first and second outer electrode wirings on exposed surfaces of the first and second transparent conductive films, respectively; And forming a first outer electrode wiring electrically connected to the first transparent electrode pattern portion and the first transparent electrode pattern portion in one side screen area and the inactive area of the first substrate by double-sided exposure / etching. Forming a second transparent electrode pattern portion and a second outer electrode wiring electrically connected to the second transparent electrode pattern portion in one screen area and an inactive area of the second substrate, respectively; It is to provide a manufacturing method.

In the second aspect of the present invention, the first and second transparent conductive films for forming the first and second transparent electrode pattern portions are formed on one side thereof, respectively, to provide first and second substrates having a screen area and an inactive area. step; Depositing first and second metal layers for forming first and second outer electrode wirings on exposed surfaces of the first and second transparent conductive films, respectively; Bonding the other sides of the first and second substrates together with an interlayer adhesive; And forming a first outer electrode wiring electrically connected to the first transparent electrode pattern portion and the first transparent electrode pattern portion in one side screen area and the inactive area of the first substrate by double-sided exposure / etching. Forming a second transparent electrode pattern portion and a second outer electrode wiring electrically connected to the second transparent electrode pattern portion in one screen area and an inactive area of the second substrate, respectively; It is to provide a manufacturing method.

The forming of the first and second transparent electrode pattern portions and the first and second outer electrode wirings may be performed by using a photolithography process. Sequentially etching the first metal layer, the first transparent conductive film, the second metal layer, and the second transparent conductive film so as to expose specific portions of the first and second substrates; The first and second metal layers are selectively etched to expose the transparent conductive film, thereby electrically connecting the first transparent electrode pattern portion and the first transparent electrode pattern portion to one side screen area and the inactive area of the first substrate, respectively. A second electrode connected to the second transparent electrode pattern portion and the second transparent electrode pattern portion at one side of the screen area and the inactive region of the second substrate at the same time as the first outer electrode wiring connected to each other; It is possible to form the electrode wiring cartons.

In the third aspect of the present invention, the first and second transparent conductive films for forming the first and second transparent electrode pattern portions are formed on one side thereof, respectively, to provide first and second substrates having a screen area and an inactive area. step; After bonding the other side surfaces of the first and second substrates with an interlayer adhesive, at least one via hole is formed on the inactive regions of the first and second substrates so that the first and second transparent conductive films penetrate each other. Forming a through hole; Depositing first and second metal layers on exposed surfaces of the first and second transparent conductive films including the through holes, respectively; And forming a first transparent electrode pattern portion on one side screen area of the first substrate by double-sided exposure / etching, and forming a second transparent electrode pattern portion on one side screen area of the second substrate, and forming the second substrate. Forming a first outer electrode wiring electrically connected to the first transparent electrode pattern portion through each via hole in one side of an inactive region of the substrate, and forming a second outer electrode wiring electrically connected to the second transparent electrode pattern portion; It is to provide a method of manufacturing a capacitive touch screen panel comprising a step.

The forming of the first and second transparent electrode pattern portions and the first and second outer electrode wirings may be performed by using a photolithography process. Sequentially etching the first metal layer, the first transparent conductive film, the second metal layer, and the second transparent conductive film so as to expose specific portions of the first and second substrates; By selectively etching the metal layers, the first transparent electrode pattern portion is formed in one side screen region of the first substrate, and the second transparent electrode pattern portion is formed in one side screen region of the second substrate. A second outer electrode wiring electrically connected to the first transparent electrode pattern portion through each via hole in an inactive region of one side of the substrate, and a second electrically connected to the second transparent electrode pattern portion The outer electrode wiring can be formed.

In the fourth aspect of the present invention, the first and second transparent conductive films for forming the first and second transparent electrode pattern portions are formed on one side thereof, respectively, to provide first and second substrates having a screen area and an inactive area. step; Bonding the other sides of the first and second substrates together with an adhesive; The first and second metal layers for forming the first and second outer electrode wirings are formed on specific exposed surfaces of the first and second transparent conductive films on the inactive regions of the first and second substrates using the first and second masks, respectively. Selectively depositing; And forming a first outer electrode wiring electrically connected to the first transparent electrode pattern portion and the first transparent electrode pattern portion in one side screen area and the inactive area of the first substrate by double-sided exposure / etching. Forming a second transparent electrode pattern portion and a second outer electrode wiring electrically connected to the second transparent electrode pattern portion in one screen area and an inactive area of the second substrate, respectively; It is to provide a manufacturing method.

In the fifth aspect of the present invention, the first and second transparent conductive films for forming the first and second transparent electrode pattern portions are formed on one side thereof, respectively, to provide first and second substrates having a screen area and an inactive area. step; The first and second metal layers for forming the first and second outer electrode wirings are formed on specific exposed surfaces of the first and second transparent conductive films on the inactive regions of the first and second substrates using the first and second masks, respectively. Selectively depositing; Bonding the other sides of the first and second substrates together with an interlayer adhesive; And forming a first outer electrode wiring electrically connected to the first transparent electrode pattern portion and the first transparent electrode pattern portion in one side screen area and the inactive area of the first substrate by double-sided exposure / etching. Forming a second transparent electrode pattern portion and a second outer electrode wiring electrically connected to the second transparent electrode pattern portion in one screen area and an inactive area of the second substrate, respectively; It is to provide a manufacturing method.

The forming of the first and second transparent electrode pattern portions and the first and second outer electrode wirings may be performed by using a photolithography process. The first and second transparent conductive films and the first and second metal layers are etched to the entire surface so that specific portions of the first and second transparent conductive films are exposed, respectively, so that the first transparent electrode pattern portion and the first transparent electrode pattern portion and the non-active region of the first substrate While forming a first outer electrode wiring electrically connected to the first transparent electrode pattern portion, the second transparent electrode pattern portion and the second transparent electrode pattern portion are electrically connected to one side screen area and the inactive area of the second substrate, respectively. It is possible to form a second outer electrode wiring connected to.

In the sixth aspect of the present invention, the first and second transparent conductive films for forming the first and second transparent electrode pattern portions are formed on one side thereof, respectively, to provide first and second substrates having a screen area and an inactive area. step; After bonding the other side surfaces of the first and second substrates with an adhesive, at least one via hole is formed on the inactive regions of the first and second substrates so that the first and second transparent conductive films penetrate each other. Forming a through hole; Selectively depositing the first and second metal layers on specific exposed surfaces of the first and second transparent conductive films on the inactive regions of the first and second substrates including the respective through holes using first and second masks, respectively. step; And forming a first transparent electrode pattern portion on one side screen area of the first substrate by double-sided exposure / etching, and forming a second transparent electrode pattern portion on one side screen area of the second substrate, and forming the second substrate. Forming a first outer electrode wiring electrically connected to the first transparent electrode pattern portion through each via hole in one side of an inactive region of the substrate, and forming a second outer electrode wiring electrically connected to the second transparent electrode pattern portion; It is to provide a method of manufacturing a capacitive touch screen panel comprising a step.

The forming of the first and second transparent electrode pattern portions and the first and second outer electrode wirings may be performed by using a photolithography process. The first and second transparent conductive films and the first and second metal layers are etched to the entire surface to expose specific portions of the first and second metal layers, thereby forming a first transparent electrode pattern portion on one side screen area of the first substrate. A second transparent electrode pattern portion is formed in one screen area of the second substrate, and a first outer electrode wiring electrically connected to the first transparent electrode pattern portion is formed through each via hole in an inactive region of one side of the second substrate. In addition, a second outer electrode wiring electrically connected to the second transparent electrode pattern portion may be formed.

Preferably, the first and second substrates are formed in a transparent film form using at least one of glass, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyimide (PI) or acryl (Acryl). can do.

Preferably, the method may further include bonding an external driving part on the inactive region of the second substrate so as to be electrically connected to the first and second outer electrode wirings.

According to a seventh aspect of the present invention, there is provided a substrate having a screen area and an inactive area, wherein first and second transparent conductive films for forming first and second transparent electrode pattern portions are formed on one side and the other side, respectively; Depositing first and second metal layers for forming first and second outer electrode wirings on exposed surfaces of the first and second transparent conductive films, respectively; And forming a first outer electrode wiring electrically connected to the first transparent electrode pattern portion and the first transparent electrode pattern portion in one side screen area and an inactive area of the substrate by double-sided exposure / etching. A method of manufacturing a capacitive touch screen panel comprising forming a second transparent electrode pattern portion and a second outer electrode wiring electrically connected to the second transparent electrode pattern portion, respectively, on the other side screen area and the inactive area. To provide.

According to an eighth aspect of the present invention, there is provided a substrate including a screen area and an inactive area, wherein first and second transparent conductive films for forming first and second transparent electrode pattern portions are formed on one side and the other side, respectively; Forming at least one through hole for forming a through hole on an inactive region of the substrate such that the first and second transparent conductive films penetrate each other; Depositing first and second metal layers on exposed surfaces of the first and second transparent conductive films including the through holes, respectively; And forming a first transparent electrode pattern portion on one side screen region of the substrate by double-sided exposure / etching, and forming a second transparent electrode pattern portion on the other side screen region of the substrate, and forming a second transparent electrode pattern portion on the other side inactive region of the substrate. Forming a first outer electrode wiring electrically connected to the first transparent electrode pattern portion through each via hole, and forming a second outer electrode wiring electrically connected to the second transparent electrode pattern portion. It is to provide a method of manufacturing a touch screen panel of the method.

According to a ninth aspect of the present invention, there is provided a substrate including a screen region and an inactive region, wherein first and second transparent conductive films for forming first and second transparent electrode pattern portions are formed on one side and the other side, respectively; Selectively depositing first and second metal layers for forming first and second outer electrode wirings on specific exposed surfaces of the first and second transparent conductive films on the inactive region of the substrate using first and second masks, respectively; ; And forming a first outer electrode wiring electrically connected to the first transparent electrode pattern portion and the first transparent electrode pattern portion in one side screen area and an inactive area of the substrate by double-sided exposure / etching. A method of manufacturing a capacitive touch screen panel comprising forming a second transparent electrode pattern portion and a second outer electrode wiring electrically connected to the second transparent electrode pattern portion, respectively, on the other side screen area and the inactive area. To provide.

In a tenth aspect of the present invention, a first and second transparent conductive films for forming first and second transparent electrode pattern portions are formed on one side and the other side, respectively, and preparing a substrate having a screen area and an inactive area. ; Forming at least one through hole for forming a through hole on an inactive region of the substrate such that the first and second transparent conductive films penetrate each other; Selectively depositing first and second metal layers on specific exposed surfaces of the first and second transparent conductive films on the inactive region of the substrate using first and second masks, respectively; And forming a first transparent electrode pattern portion on one side screen region of the substrate by double-sided exposure / etching, and forming a second transparent electrode pattern portion on the other side screen region of the substrate, and forming a second transparent electrode pattern portion on the other side inactive region of the substrate. Forming a first outer electrode wiring electrically connected to the first transparent electrode pattern portion through each via hole, and forming a second outer electrode wiring electrically connected to the second transparent electrode pattern portion. It is to provide a method of manufacturing a touch screen panel of the method.

Preferably, the substrate may be formed in a transparent film form using at least one of polyethylene terephthalate (PET), polyimide (PI), acrylic, acrylic naphthalate (PEN), or glass.

Preferably, the method may further include bonding an external driving part on the inactive region of the substrate so as to be electrically connected to the first and second outer electrode wirings.

Preferably, the first and second transparent conductive films are indium tin oxide (ITO), indium zinc oxide (IZO), AZO (Al-doped ZnO), carbon nanotubes (CNT), conductive polymers (PEDOT); poly (3,4-ethylenedioxythiophene)), silver (Ag) or copper (Cu) may include at least one of the transparent ink.

Preferably, the first and second metal layers are formed of at least one of copper (Cu), nickel (Ni), aluminum (Al), chromium (Cr), molybdenum (Mo), silver (Ag), or gold (Au). The material can be used for sputter deposition.

Preferably, the first transparent electrode pattern portion is formed such that the vertices of the plurality of triangular or square sensing pads are arranged so that the plurality of first transparent electrode patterns connected to each other in the longitudinal direction are spaced at regular intervals in the lateral direction. The second transparent electrode pattern part is disposed in the longitudinal direction such that the plurality of second transparent electrode patterns connected to each other in the transverse direction are arranged in an orthogonal shape between the first transparent electrode patterns so that vertices of the plurality of triangular or square sensing pads are spaced apart by a predetermined distance. Arranged at regular intervals to form an orthogonal grid.

According to the manufacturing method of the capacitive touch screen panel of the present invention as described above, it is possible to efficiently reduce the manufacturing cost of the touch screen, there is an advantage that can greatly reduce the manufacturing process procedure of the touch screen panel. .

In addition, according to the present invention, there is an advantage of minimizing defects due to bubbles, foreign substances, or scratches in a roll-to-roll lamination process between layers before the touch screen patterning operation. have.

In addition, according to the present invention, a patterning process by double-sided exposure / etching includes first and second transparent electrode patterns, respective first and second transparent electrode patterns and first and second outer electrode wirings, respectively, This has the advantage of maintaining a precise alignment tolerance between the second outer electrode wirings.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the following embodiments of the present invention may be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below. The embodiments of the present invention are provided to enable those skilled in the art to more fully understand the present invention.

1 is an overall plan view for explaining an example of a capacitive touch screen panel according to the present invention, Figures 2 and 3 are a plan view showing only the first and second substrate portions of Figure 1, respectively, 4 is a longitudinal cross-sectional view illustrating a capacitive touch screen panel according to the present invention, and FIG. 5 is a cross-sectional view taken along line AA ′ of FIG. 1.

1 to 5, the capacitive touch screen panel according to the present invention includes the first and second substrates 100 and 110, the first and second transparent electrode pattern parts 120 and 130. And first and second outer electrode wirings 140 and 150.

Here, one side surfaces of the first and second substrates 100 and 110 are bonded to each other by the interlayer adhesive O, and have a screen area S and an inactive area X.

The first and second substrates 100 and 110 may be in the form of transparent dielectric films, for example, glass, polyimide (PI), acrylic, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), or the like. It is preferably formed using.

In addition, it is preferable that the interlayer adhesive O uses, for example, an optically clear adhesive (OCA) or the like as the transparent adhesive.

The first transparent electrode pattern part 120 is formed on the other side screen area S of the first substrate 100, and the vertices of the plurality of triangular or rectangular sensing pads SP are spaced apart from each other by a predetermined distance. The plurality of first transparent electrode patterns 125 electrically connected to each other in the longitudinal direction are arranged to be spaced apart at a predetermined interval in the lateral direction.

The second transparent electrode pattern unit 130 is formed on the other side screen area S of the second substrate 110, and the vertices of the plurality of triangular or rectangular sensing pads SP are spaced apart from each other at regular intervals. The plurality of second transparent electrode patterns 135 electrically connected to each other in the lateral direction are arranged to be spaced at regular intervals in the longitudinal direction so as to be disposed in an orthogonal shape between the first transparent electrode patterns 125, thereby providing the first and second When the substrates 100 and 110 are viewed in a plane, they may be formed in an orthogonal lattice shape.

The first and second transparent electrode pattern portions 120 and 130 may be, for example, indium tin oxide (ITO), indium zinc oxide (IZO), or AZO (Al-doped ZnO). ), Carbon nanotubes (CNTs), conductive polymers (PEDOT; poly (3,4-ethylenedioxythiophene)), silver (Ag) or copper (Cu) transparent ink is preferably used.

On the other hand, the shape of the sensing pad (SP) is, for example, preferably formed in a triangle, square or rhombus, but is not limited to this, for example, may be formed in a variety of shapes, such as circular, oval or polygonal.

The first outer electrode wiring 140 is formed to be electrically connected to each of the first transparent electrode patterns 125 of the first transparent electrode pattern part 120 on the other side inactive region X of the first substrate 100. It is.

The second outer electrode wiring 150 is formed to be electrically connected to each of the second transparent electrode patterns 135 of the second transparent electrode pattern part 130 on the other side inactive region X of the second substrate 110. It is.

In addition, on the other side inactive area X of the first and second substrates 100 and 110, the first and second outer electrode wirings 140 and 150 are electrically connected to each other to drive and control the touch screen panel as a whole. An external driving unit (eg, a flexible printed circuit (FPC) or a chip on film (COF), etc.) 170 having the control unit 160 mounted thereon is bonded on both sides thereof.

In addition, although not shown in the drawing, one side is bonded to the other side of the second substrate 110 by the interlayer adhesive O, the transparent substrate having the screen area S and the inactive area X, and electromagnetic interference Electromagnetic Interference (EMI) A shielding electrode pattern for removing a noise signal may be further included in the screen area S on the other side of the transparent substrate to remove noise.

In addition, an outer shielding electrode wiring may be further included in the other side inactive region X of the transparent substrate so as to be electrically connected to the shielding electrode pattern. The shielding electrode pattern may be formed, for example, in the form of a plate or a mesh.

The structure of the transparent substrate, the shielding electrode pattern, and the outer shielding electrode wiring may be changed. That is, the shielding electrode pattern and the outer shielding electrode wiring are formed in a specific shape on one side surface-specific region of the transparent substrate, and one side of the transparent substrate is formed by the interlayer adhesive (O). It is a structure bonded to the other side.

6 is an overall plan view for explaining another example of the capacitive touch screen panel according to the present invention, and FIGS. 7 and 8 are plan views showing only the first and second substrate portions of FIG. 6, respectively. FIG. 9 is a longitudinal cross-sectional view illustrating a capacitive touch screen panel according to the present invention, and FIG. 10 is a cross-sectional view taken along line BB ′ of FIG. 6.

6 to 10, the capacitive touch screen panel according to the present invention includes the first and second substrates 200 and 210, the first and second transparent electrode pattern parts 220 and 230. And first and second outer electrode wirings 240 and 250.

Here, since the first and second substrates 200 and 210 and the first and second transparent electrode pattern parts 220 and 230 are the same as those of FIGS. 1 to 5 described above, a detailed description thereof will be omitted.

In particular, the capacitive touch screen panel according to the present invention illustrated in FIGS. 6 to 10 has a structure for bonding the external driving unit 270 to a cross section, and the first outer electrode wiring 240 has a first substrate and a second substrate. Electrically connected to each of the first transparent electrode patterns 225 of the first transparent electrode pattern unit 220 through at least one via hole (VH) formed on the inactive region (X) of the 200 and 210. It is formed on the other side inactive region X of the second substrate 210.

The second outer electrode wiring 250 is formed to be electrically connected to each of the second transparent electrode patterns 235 of the second transparent electrode pattern part 230 on the other side inactive region X of the second substrate 210. It is.

The first and second substrates 200 and 210 are electrically connected to the first and second outer electrode wirings 240 and 250 to drive and control the touch screen panel as a whole. The external drive unit 270 mounted with the control unit 260 is bonded in a cross section.

Meanwhile, in FIG. 6, the external driving unit 270 mounted with the controller 260 protrudes to the outside and is bonded to the outside, but is not limited thereto, and the first and second substrates 200 and 210 of the first and second substrates 200 and 210 do not protrude to the outside. It may be bonded in cross section on the other side inactive region (X).

In addition, although not shown in the drawings, one side is bonded to the other side of the second substrate 210 by the interlayer adhesive O, the transparent substrate having the screen area S and the inactive area X, and electromagnetic interference Electromagnetic Interference (EMI) A shielding electrode pattern for removing a noise signal may be further included in the screen area B on the other side of the transparent substrate to remove noise.

In addition, an outer shielding electrode wiring may be further included in the other side inactive region X of the transparent substrate so as to be electrically connected to the shielding electrode pattern. The shielding electrode pattern may be formed, for example, in the form of a plate or a mesh.

The structure of the transparent substrate, the shielding electrode pattern, and the outer shielding electrode wiring may be changed. That is, the shielding electrode pattern and the outer shielding electrode wiring are formed in a specific shape on one side surface specific region of the transparent substrate, and one side of the transparent substrate is formed by the interlayer adhesive (O). It is a structure bonded to the other side.

Meanwhile, in the present invention described above, although the first and second substrates 100 and 110 (200 and 210) bonded to each other by the interlayer adhesive O are used, the present invention is not limited thereto, and the interlayer adhesive O is not used. It is also possible to use a structure consisting of one substrate without.

(First embodiment)

11 to 16 are plan views and cross-sectional views illustrating a method of manufacturing a capacitive touch screen panel according to a first embodiment of the present invention.

11 to 13, the first and second transparent conductive films 300 and 310 for forming the first and second transparent electrode pattern portions having predetermined thicknesses are formed on one side thereof, respectively, and the screen regions S and After preparing the first and second substrates 100 and 110 having the inactive region X, the other side surfaces of the first and second substrates 100 and 110 are bonded to each other using the interlayer adhesive O.

Referring to FIG. 14, first and second outer electrode wiring forming first and second outer electrode wiring forming surfaces are exposed on the exposed surfaces of the first and second transparent conductive films 300 and 310, respectively, using a conventional sputtering or printing process. And depositing second metal layers 400 and 410 to a predetermined thickness.

In this case, the first and second metal layers 400 and 410 may be, for example, copper (Cu), nickel (Ni), aluminum (Al), chromium (Cr), molybdenum (Mo), silver (Ag), or gold (Au). Sputtering processes such as, for example, Physical Vapor Deposition (PVD), Chemical Vapor Deposition (CVD), Plasma Enhanced Chemical Vapor Deposition (PECVD), Screen Printing, The deposition may be performed by using a direct printing process such as gravure, gravure offset, or inkjet, coating, wet or dry plating.

Meanwhile, in the first embodiment of the present invention, after bonding the other side surfaces of the first and second substrates 100 and 110 with each other, the first and second transparent conductive films 300 and 310 are exposed to the first and second surfaces, respectively. Although the second metal layers 400 and 410 are deposited, the present invention is not limited thereto, and the first and second metal layers 400 and 410 are deposited on exposed surfaces of the first and second transparent conductive films 300 and 310, respectively. The other side surfaces of the first and second substrates 100 and 110 may be bonded to each other.

Referring to FIG. 15, a specific portion of one side screen area S and an inactive area X of the first and second substrates 100 and 110 may be exposed using a conventional photolithography process. The first metal layer 400, the first transparent conductive film 300, the second metal layer 410, and the second transparent conductive film 310 are sequentially etched through the entire surface.

In this case, the photolithography process uses a principle of changing a property by causing a chemical reaction when a specific chemical, for example, photoresist (PR), receives light, thereby obtaining a mask of a pattern to be obtained. By selectively irradiating light to the photoresist (PR) using a, it is a process of forming the same pattern as the pattern of the mask.

The photolithography process includes a PR coating process for applying a photoresist (PR) corresponding to a film of a general photograph, an exposure process for selectively irradiating light using a mask, and then a light receiving portion using a developer. The photoresist PR is removed to form a desired pattern.

Referring to FIG. 16, the first and second metal layers 400 and 410 are exposed to expose the first and second transparent conductive films 300 and 310 on the screen area S of the first and second substrates 100 and 110. 1 and 4, each of the first transparent electrodes in one side screen area S and inactive area X of the first substrate 100 by double-sided exposure / etching, as shown in FIGS. 1 to 4. While forming the first outer electrode wiring 240 electrically connected to the pattern part 220 and the first transparent electrode pattern part 220, the screen area S and the non-active area (S) of one side of the second substrate 110 may be formed. A second transparent electrode pattern portion 230 and a second outer electrode wiring 250 electrically connected to the second transparent electrode pattern portion 230 may be formed in each of X).

(2nd Example)

17 to 21 are plan views and cross-sectional views illustrating a method of manufacturing a capacitive touch screen panel according to a second embodiment of the present invention.

17 to 19, the first and second transparent conductive films 300 and 310 for forming the first and second transparent electrode pattern portions having predetermined thicknesses are formed on one side thereof, respectively. And after preparing the first and second substrates 100 and 110 having the inactive region X, the other side surfaces of the first and second substrates 100 and 110 are bonded to each other using the interlayer adhesive O.

Referring to FIG. 20, the first and second substrates 500 and 510 may be used to form first and second substrates 100 and 110 on the inactive region X of the first and second substrates 100 and 110. And first and second metal layers for forming first and second outer electrode wirings having a predetermined thickness, respectively, using a conventional sputtering or printing process on specific exposed surfaces of the second transparent conductive films 300 and 310. Optionally deposit 400 and 410.

Meanwhile, in the second embodiment of the present invention, after bonding the other side surfaces of the first and second substrates 100 and 110 to each other, the first and second transparent conductive films 300 and 310 are respectively exposed to the first exposed surface. And selectively depositing the second metal layers 400 and 410, but are not limited thereto. The first and second metal layers 400 and 410 may be formed on specific exposed surfaces of the first and second transparent conductive films 300 and 310, respectively. After selectively depositing, the other side surfaces of the first and second substrates 100 and 110 may be bonded to each other.

Referring to FIG. 21, a specific portion of one side screen area S and an inactive area X of the first and second substrates 100 and 110 may be exposed using a conventional photolithography process. By first etching the first and second transparent conductive films 300 and 310 and the first and second metal layers 400 and 410 at once, as shown in FIGS. 1 to 4, the first substrate (by double-sided exposure / etching) may be used. The first outer electrode wiring 240 electrically connected to the first transparent electrode pattern part 220 and the first transparent electrode pattern part 220 in one side screen area S and the inactive area X of 100, respectively. And at the same time, are electrically connected to the second transparent electrode pattern portion 230 and the second transparent electrode pattern portion 230 at one side screen area S and inactive area X of the second substrate 110, respectively. The second outer electrode wiring 250 may be formed.

(Third Embodiment)

22 to 27 are plan views and cross-sectional views illustrating a method of manufacturing a capacitive touch screen panel according to a third embodiment of the present invention.

22 to 24, the first and second transparent conductive films 300 and 310 for forming the first and second transparent electrode pattern portions having predetermined thicknesses are formed on one side thereof, respectively, and the screen area S and After preparing the first and second substrates 200 and 210 having the inactive region X, the other side surfaces of the first and second substrates 200 and 210 are bonded to each other using the interlayer adhesive O.

Then, as shown in FIG. 24, normal punching (or punching) is performed on the inactive regions X of the first and second substrates 200 and 210 so that the first and second transparent conductive films 300 and 310 penetrate each other. Punching) Through-holes (H) for forming at least one via hole (VH) is formed using a device.

Referring to FIG. 25, the surface of each of the first and second transparent conductive films 300 and 310 including the inner surface of each through hole H may be formed using a conventional sputtering or printing process. The first and second metal layers 400 and 410 are deposited to a predetermined thickness.

In this case, the first and second metal layers 400 and 410 may be, for example, copper (Cu), nickel (Ni), aluminum (Al), chromium (Cr), molybdenum (Mo), silver (Ag), or gold (Au). Sputtering processes such as, for example, Physical Vapor Deposition (PVD), Chemical Vapor Deposition (CVD), Plasma Enhanced Chemical Vapor Deposition (PECVD), Screen Printing, The deposition may be performed using a direct printing, coating process, wet or dry plating process, such as a gravure, gravure offset, or inkjet.

Meanwhile, via holes (VHs), ie, plated thru holes (PTH), for conducting both surfaces of the substrate may be formed by, for example, dry or wet plating or dry and wet plating.

Referring to FIG. 26, a specific portion of one side screen area S and an inactive area X of the first and second substrates 200 and 210 may be exposed using a conventional photolithography process. The first metal layer 400, the first transparent conductive film 300, the second metal layer 410, and the second transparent conductive film 310 are sequentially etched through the entire surface.

Referring to FIG. 27, the first and second metal layers 400 and 410 are exposed to expose the first and second transparent conductive films 300 and 310 on the screen area S of the first and second substrates 200 and 210. By selectively etching the respective, as shown in FIGS. 6 to 10, the first transparent electrode pattern portion 220 is formed in one side screen area S of the first substrate 200 by double-sided exposure / etching. At the same time, the second transparent electrode pattern part 230 is formed in one screen area S of the second substrate 210, and each via hole VH is formed in one area inactive area X of the second substrate 210. The first outer electrode wiring 240 electrically connected to each of the first transparent electrode patterns 225 of the first transparent electrode pattern part 220 is formed, and each of the second transparent electrode pattern parts 230 is formed. The second outer electrode wiring 250 may be formed to be electrically connected to the second transparent electrode pattern 235.

(Example 4)

28 to 32 are plan views and cross-sectional views illustrating a method of manufacturing a capacitive touch screen panel according to a fourth embodiment of the present invention.

28 to 30, first and second transparent conductive films 300 and 310 for forming first and second transparent electrode pattern portions having predetermined thicknesses are formed on one side thereof, respectively, and the screen area S and After preparing the first and second substrates 200 and 210 having the inactive region X, the other side surfaces of the first and second substrates 200 and 210 are bonded to each other using the interlayer adhesive O.

Then, as shown in FIG. 30, the normal punching is performed on the inactive region X of the first and second substrates 200 and 210 so that the first and second transparent conductive films 300 and 310 penetrate each other. Punching) Through-holes (H) for forming at least one via hole (VH) is formed using a device.

Referring to FIG. 31, the inner surface of each through hole H on the non-active area X of the first and second substrates 200 and 210 may be formed using specific first and second masks 500 and 510. Selecting first and second metal layers 400 and 410 of predetermined thickness, respectively, using a conventional sputtering or printing process on specific exposed surfaces of the first and second transparent conductive films 300 and 310 including To be deposited.

Referring to FIG. 32, a specific portion of one side screen area S and an inactive area X of the first and second substrates 200 and 210 may be exposed using a conventional photolithography process. By first etching the first and second transparent conductive films 300 and 310 and the first and second metal layers 400 and 410, as shown in FIGS. 6 to 10, the first substrate 200 is formed by double-sided exposure / etching. The first transparent electrode pattern portion 220 is formed in one side screen region S of the second substrate 210 and the second transparent electrode pattern portion 230 is formed in one side screen region S of the second substrate 210. The first outer surface of the second substrate 210 is electrically connected to each of the first transparent electrode patterns 225 of the first transparent electrode pattern part 220 through each via hole VH. In addition to forming the electrode wiring 240, the second outer electrode wiring 250 electrically connected to each of the second transparent electrode patterns 235 of the second transparent electrode pattern part 230 may be formed. All.

Meanwhile, in the above-described first to fourth embodiments of the present invention, the first and second substrates 100 and 110 (200 and 210) are bonded to each other using the interlayer adhesive O, but are not limited thereto. By using a structure composed of one substrate without using the interlayer adhesive O, the manufacturing cost of the touch screen can be efficiently reduced and the manufacturing process procedure of the touch screen panel can be greatly reduced.

Although a preferred embodiment of the method of manufacturing a capacitive touch screen panel according to the present invention has been described above, the present invention is not limited thereto, but the scope of the claims and the detailed description of the invention, and the accompanying drawings. It is possible to carry out the transformation by the branch and this also belongs to this invention.

1 is an overall plan view for explaining an example of a capacitive touch screen panel according to the present invention.

2 and 3 are plan views showing only portions of the first and second substrates of FIG. 1, respectively.

4 is a longitudinal cross-sectional view illustrating a capacitive touch screen panel according to the present invention.

5 is a cross-sectional view taken along the line AA ′ of FIG. 1.

6 is an overall plan view for explaining another example of the capacitive touch screen panel according to the present invention.

7 and 8 are plan views illustrating only portions of the first and second substrates of FIG. 6, respectively.

9 is a longitudinal cross-sectional view illustrating a capacitive touch screen panel according to the present invention.

10 is a cross-sectional view taken along the line BB ′ of FIG. 6.

11 to 16 are plan views and cross-sectional views illustrating a method of manufacturing a capacitive touch screen panel according to a first embodiment of the present invention.

17 to 21 are plan views and cross-sectional views illustrating a method of manufacturing a capacitive touch screen panel according to a second embodiment of the present invention.

22 to 27 are plan views and cross-sectional views illustrating a method of manufacturing a capacitive touch screen panel according to a third embodiment of the present invention.

28 to 32 are plan views and cross-sectional views illustrating a method of manufacturing a capacitive touch screen panel according to a fourth embodiment of the present invention.

Claims (21)

Preparing first and second substrates having first and second transparent conductive films for forming first and second transparent electrode pattern portions on one side, respectively, the first and second substrates having a screen area and an inactive area; Bonding the other sides of the first and second substrates together with an interlayer adhesive; Depositing first and second metal layers for forming first and second outer electrode wirings on exposed surfaces of the first and second transparent conductive films, respectively; And The first outer electrode wiring electrically connected to the first transparent electrode pattern portion and the first transparent electrode pattern portion is formed on one side screen area and the inactive area of the first substrate by double-sided exposure / etching. Forming a second transparent electrode pattern portion and a second outer electrode wiring electrically connected to the second transparent electrode pattern portion in one screen area and an inactive area of the second substrate, respectively; Manufacturing method. Preparing first and second substrates having first and second transparent conductive films for forming first and second transparent electrode pattern portions on one side, respectively, the first and second substrates having a screen area and an inactive area; Depositing first and second metal layers for forming first and second outer electrode wirings on exposed surfaces of the first and second transparent conductive films, respectively; Bonding the other sides of the first and second substrates together with an interlayer adhesive; And The first outer electrode wiring electrically connected to the first transparent electrode pattern portion and the first transparent electrode pattern portion is formed on one side screen area and the inactive area of the first substrate by double-sided exposure / etching. Forming a second transparent electrode pattern portion and a second outer electrode wiring electrically connected to the second transparent electrode pattern portion in one screen area and an inactive area of the second substrate, respectively; Manufacturing method. The method according to claim 1 or 2, The forming of the first and second transparent electrode pattern parts and the first and second outer electrode wirings may be performed by using a photolithography process to designate specific portions of one side screen area and the inactive area of the first and second substrates. After sequentially etching the first metal layer and the first transparent conductive film, the second metal layer and the second transparent conductive film so as to expose the first and second transparent conductive films on the screen area of the first and second substrates, By selectively etching each of the first and second metal layers to be exposed, A first outer electrode wiring electrically connected to the first transparent electrode pattern portion and the first transparent electrode pattern portion, respectively, is formed on one side screen area and the inactive area of the first substrate, and the one side screen of the second substrate is formed. And forming a second transparent electrode pattern portion and a second outer electrode wiring electrically connected to the second transparent electrode pattern portion, respectively, in an area and an inactive region. Preparing first and second substrates having first and second transparent conductive films for forming first and second transparent electrode pattern portions on one side, respectively, the first and second substrates having a screen area and an inactive area; After bonding the other side surfaces of the first and second substrates with an interlayer adhesive, at least one via hole is formed on the inactive regions of the first and second substrates so that the first and second transparent conductive films penetrate each other. Forming a through hole; Depositing first and second metal layers on exposed surfaces of the first and second transparent conductive films including the through holes, respectively; And The first transparent electrode pattern portion is formed in one side screen area of the first substrate by double-sided exposure / etching, and the second transparent electrode pattern portion is formed in one side screen area of the second substrate. Forming a first outer electrode wiring electrically connected to the first transparent electrode pattern portion through each via hole in one side inactive region, and forming a second outer electrode wiring electrically connected to the second transparent electrode pattern portion; Method of manufacturing a capacitive touch screen panel comprising a. 5. The method of claim 4, The forming of the first and second transparent electrode pattern parts and the first and second outer electrode wirings may be performed by specifying a screen area and an inactive area on one side of the first and second substrates using a photolithography process. After sequentially etching the first metal layer, the first transparent conductive film, the second metal layer, and the second transparent conductive film so as to expose portions, respectively, the first and second metal layers on the screen areas of the first and second substrates may be removed. By selectively etching each, A first transparent electrode pattern portion is formed on one side screen region of the first substrate, and a second transparent electrode pattern portion is formed on one side screen region of the second substrate. The capacitance method is characterized in that to form a first outer electrode wiring electrically connected to the first transparent electrode pattern portion through a via hole and to form a second outer electrode wiring electrically connected to the second transparent electrode pattern portion. Method of manufacturing a touch screen panel. Preparing first and second substrates having first and second transparent conductive films for forming first and second transparent electrode pattern portions on one side, respectively, the first and second substrates having a screen area and an inactive area; Bonding the other sides of the first and second substrates together with an interlayer adhesive; The first and second metal layers for forming the first and second outer electrode wirings are formed on specific exposed surfaces of the first and second transparent conductive films on the inactive regions of the first and second substrates using the first and second masks, respectively. Selectively depositing; And The first outer electrode wirings electrically connected to the first transparent electrode pattern portion and the first transparent electrode pattern portion are formed on one side screen area and the inactive area of the first substrate by double-sided exposure / etching. Forming a second transparent electrode pattern portion and a second outer electrode wiring electrically connected to the second transparent electrode pattern portion in one screen area and an inactive area of the second substrate, respectively; Manufacturing method. Preparing first and second substrates having first and second transparent conductive films for forming first and second transparent electrode pattern portions on one side, respectively, the first and second substrates having a screen area and an inactive area; The first and second metal layers for forming the first and second outer electrode wirings are formed on specific exposed surfaces of the first and second transparent conductive films on the inactive regions of the first and second substrates using the first and second masks, respectively. Selectively depositing; Bonding the other sides of the first and second substrates together with an interlayer adhesive; And The first outer electrode wiring electrically connected to the first transparent electrode pattern portion and the first transparent electrode pattern portion is formed on one side screen area and the inactive area of the first substrate by double-sided exposure / etching. Forming a second transparent electrode pattern portion and a second outer electrode wiring electrically connected to the second transparent electrode pattern portion in one screen area and an inactive area of the second substrate, respectively; Manufacturing method. The method according to claim 6 or 7, The forming of the first and second transparent electrode pattern parts and the first and second outer electrode wirings may be performed by using a photolithography process to designate specific portions of one side screen area and the inactive area of the first and second substrates. By etching the entire surface of the first and second transparent conductive films and the first and second metal layers so as to be exposed, respectively. A first outer electrode wiring electrically connected to the first transparent electrode pattern portion and the first transparent electrode pattern portion, respectively, is formed on one side screen area and the inactive area of the first substrate, and the one side screen of the second substrate is formed. And a second outer electrode wiring electrically connected to the second transparent electrode pattern portion and the second transparent electrode pattern portion, respectively, in the region and the inactive region. Preparing first and second substrates having first and second transparent conductive films for forming first and second transparent electrode pattern portions on one side, respectively, the first and second substrates having a screen area and an inactive area; After bonding the other side surfaces of the first and second substrates with an interlayer adhesive, at least one via hole is formed on the inactive regions of the first and second substrates so that the first and second transparent conductive films penetrate each other. Forming a through hole; Selectively depositing first and second metal layers on specific exposed surfaces of the first and second transparent conductive films on the inactive regions of the first and second substrates including the respective through holes using first and second masks, respectively. Making; And The first transparent electrode pattern portion is formed in one side screen area of the first substrate by double-sided exposure / etching, and the second transparent electrode pattern portion is formed in one side screen area of the second substrate. Forming a first outer electrode wiring electrically connected to the first transparent electrode pattern portion through each via hole in one side inactive region, and forming a second outer electrode wiring electrically connected to the second transparent electrode pattern portion; Method of manufacturing a capacitive touch screen panel comprising a. The method of claim 9, The forming of the first and second transparent electrode pattern parts and the first and second outer electrode wirings may be performed by using a photolithography process to designate specific portions of one side screen area and the inactive area of the first and second substrates. By etching the entire surface of the first and second transparent conductive films and the first and second metal layers so as to be exposed, respectively. A first transparent electrode pattern portion is formed on one side screen region of the first substrate, and a second transparent electrode pattern portion is formed on one side screen region of the second substrate. The capacitance method is characterized in that to form a first outer electrode wiring electrically connected to the first transparent electrode pattern portion through a via hole and to form a second outer electrode wiring electrically connected to the second transparent electrode pattern portion. Method of manufacturing a touch screen panel. The method according to any one of claims 1, 2, 4, 6, 7, or 9, The first and second substrates are formed in a transparent film form using at least one of glass, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyimide (PI), or acrylic (acryl). Method of manufacturing a capacitive touch screen panel. The method according to claim 4 or 9, And bonding a cross-section of the external driver on the inactive region of the second substrate so as to be electrically connected to the first and second outer electrode wirings. Preparing a substrate having a screen area and an inactive area, wherein first and second transparent conductive films for forming first and second transparent electrode pattern portions are formed on one side and the other side, respectively; Depositing first and second metal layers for forming first and second outer electrode wirings on exposed surfaces of the first and second transparent conductive films, respectively; And The first outer electrode wiring electrically connected to the first transparent electrode pattern portion and the first transparent electrode pattern portion, respectively, is formed on one side screen area and the inactive area of the substrate by double-sided exposure / etching, and the other surface of the substrate is formed. Forming a second transparent electrode pattern portion and a second outer electrode wiring electrically connected to the second transparent electrode pattern portion, respectively, in the side screen area and the non-active area. Preparing a substrate having a screen area and an inactive area, wherein first and second transparent conductive films for forming first and second transparent electrode pattern portions are formed on one side and the other side, respectively; Forming a plurality of via holes forming through holes on the inactive region of the substrate such that the first and second transparent conductive films penetrate each other; Depositing first and second metal layers on exposed surfaces of the first and second transparent conductive films including the through holes, respectively; And The first transparent electrode pattern portion is formed on one side screen region of the substrate by double-sided exposure / etching, and the second transparent electrode pattern portion is formed on the other side screen region of the substrate, and the second transparent electrode pattern portion is formed on the other side inactive region of the substrate. Forming a first outer electrode wiring electrically connected to the first transparent electrode pattern portion through a via hole, and forming a second outer electrode wiring electrically connected to the second transparent electrode pattern portion. Method of manufacturing a touch screen panel. Preparing a substrate having a screen area and an inactive area, wherein first and second transparent conductive films for forming first and second transparent electrode pattern portions are formed on one side and the other side, respectively; Selectively depositing first and second metal layers for forming first and second outer electrode wirings on specific exposed surfaces of the first and second transparent conductive films on the inactive region of the substrate using first and second masks, respectively; ; And The first outer electrode wiring electrically connected to the first transparent electrode pattern portion and the first transparent electrode pattern portion, respectively, is formed on one side screen area and the inactive area of the substrate by double-sided exposure / etching, and the other surface of the substrate is formed. Forming a second transparent electrode pattern portion and a second outer electrode wiring electrically connected to the second transparent electrode pattern portion, respectively, in the side screen area and the non-active area. Preparing a substrate having a screen area and an inactive area, wherein first and second transparent conductive films for forming first and second transparent electrode pattern portions are formed on one side and the other side, respectively; Forming at least one through hole for forming a through hole on an inactive region of the substrate such that the first and second transparent conductive films penetrate each other; Selectively depositing first and second metal layers on specific exposed surfaces of the first and second transparent conductive films on the inactive region of the substrate using first and second masks, respectively; And The first transparent electrode pattern portion is formed on one side screen region of the substrate by double-sided exposure / etching, and the second transparent electrode pattern portion is formed on the other side screen region of the substrate, and the second transparent electrode pattern portion is formed on the other side inactive region of the substrate. Forming a first outer electrode wiring electrically connected to the first transparent electrode pattern portion through a via hole, and forming a second outer electrode wiring electrically connected to the second transparent electrode pattern portion. Method of manufacturing a touch screen panel. The method according to any one of claims 13 to 16, The substrate is formed of a transparent film by using at least one of polyethylene terephthalate (PET), polyimide (PI), acrylic (Acryl), polyethylene naphthalate (PEN), or glass. Method of manufacturing a touch screen panel. The method according to claim 14 or 16, And bonding a cross-section of the external driver on the inactive region of the substrate so as to be electrically connected to the first and second outer electrode wirings. The method according to any one of claims 1, 2, 4, 6, 7, 7, 9 or 13 to 16, The first and second transparent conductive films include indium tin oxide (ITO), indium zinc oxide (IZO), AZO (Al-doped ZnO), carbon nanotubes (CNT), conductive polymers (PEDOT), and poly (3). , 4-ethylenedioxythiophene)), silver (Ag) or copper (Cu) transparent ink containing at least one of the manufacturing method of the capacitive touch screen panel. The method according to any one of claims 1, 2, 4, 6, 7, 7, 9 or 13 to 16, The first and second metal layers may be formed of at least one of copper (Cu), nickel (Ni), aluminum (Al), chromium (Cr), molybdenum (Mo), silver (Ag), and gold (Au). Method of manufacturing a capacitive touch screen panel characterized in that the sputtering deposition by. The method according to any one of claims 1, 2, 4, 6, 7, 7, 9 or 13 to 16, The first transparent electrode pattern portion is formed such that the vertices of the plurality of triangular or square sensing pads are arranged so that the plurality of first transparent electrode patterns connected to each other in the longitudinal direction are spaced at regular intervals in the lateral direction. The second transparent electrode pattern part has a longitudinal direction such that a plurality of second transparent electrode patterns connected to each other in a transverse direction such that vertices of the plurality of triangular or rectangular sensing pads are spaced apart at regular intervals is disposed in an orthogonal shape between each of the first transparent electrode patterns. Method of manufacturing a capacitive touch screen panel, characterized in that arranged at regular intervals to form an orthogonal grid.

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