KR20150061357A - Touch screen panel integrated with cover window and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a touch screen panel having an integrated window, which comprises a protective layer for protecting a print layer formed on the upper surface of a window substrate or a protective layer for protecting a print layer and a window substrate and additionally a protective layer in which a planarization layer is interposed, and a manufacturing method thereof. The touch screen panel having the integrated window in accordance with the present invention prevents damage to the print layer or the print layer and the window substrate by the impact from the outside, removes uneven horizontal surfaces of the print layer and the window substrate, and improves electrical properties by having a low contact resistance value. Moreover, in accordance with the manufacturing method of the present invention, a high-yield and high-quality touch screen panel having an integrated window with a low defective rate can be mass-produced with a simple process by preventing the generation of out-gas and preventing the disconnection or short circuit of the transparent electrode during a high-temperature deposition process for forming a transparent electrode.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a touch-

The present invention relates to a window-integrated touch screen panel and a method of manufacturing the same, and more particularly, to a window-integrated touch screen panel and a method of manufacturing the same, Layered touch screen panel including a protective layer interposed therebetween, and a method of manufacturing the same.

The touch screen panel, which has recently been used as a new input device with smart phones, is being expanded to include tablet PCs, notebooks, monitors, TVs, etc. In response to the demand for slimmer, lighter, higher quality, . In particular, in order to solve market needs such as slimness and cost reduction by simplifying the structure instead of a conventional touch screen panel in which a touch sensor is interposed between a cover window and a display panel, a touch sensor is integrally formed with a cover window One-window type (cover glass integrated type) touch screen panel attracts attention.

In addition, as the sensing method of the touch screen panel is changed from the resistive type to the capacitive type, the structure of the ITO (glass-ITO film-ITO film) with two indium tin oxide (ITO) layers is slim and light G1 (glass-ITO film) having one ITO film layer, G1 (glass-ITO electrode layer) having one ITO electrode layer and G2 (glass-ITO electrode layer-ITO electrode layer) having two ITO electrode layers without ITO film layer, It is being converted into a structure.

Generally, a capacitance type window-integrated touch screen panel having a G1 or G2 structure is formed by forming a print layer with a black ink on a window substrate, and then applying a thin film by ITO sputtering on the window substrate followed by etching to form a pattern. A direct patterned window (DPW) type in which a wiring pattern is directly formed is adopted (Patent Document 1). In the DPW type, the lamination process for attaching the ITO film to the window is omitted, thereby avoiding a reduction in yield due to the deficiency of the lamination process, and it is possible to produce an ultrathin touch screen panel having a thin thickness by simplifying the process , Since the transparent electrode is deposited on the printing layer of the thick film, the transparent electrode may be disconnected or short-circuited due to the step difference between the cover glass and the printing layer. If out gas is generated on the surface of the printing layer during high- There is a problem that it is difficult to realize a high quality ITO layer.

In order to solve this problem, a ITO thin film pattern layer is first formed on a window substrate through an ITO sputtering and etching process, a printed layer is formed on the ITO thin film pattern layer, and a conductive coloring layer is disposed in a through region to connect the metal circuit and the ITO electrode An ink on patterned window (IOP) type is known (Patent Documents 2 and 3). Since the ITO is sputtered on a flat window substrate and is patterned by etching, ITO does not have a possibility of breaking or short-circuiting, and it has a merit of contributing to the improvement of yield by lowering the defective rate. On the other hand, the through region is visible or the conductive coloring layer The resistance value increases due to the high contact resistance caused by the contact resistance, and the process cost is increased.

In order to solve the problems of the prior art, the present inventors have found that a transparent electrode is first deposited on a window substrate, then a print layer is formed, and the printed layer or the print layer and the window substrate are prevented from being damaged The present invention has been completed based on the fact that it is possible to mass-produce a high-quality window-integrated touch screen panel having a high yield and a high yield when a step between a print layer and a window substrate can be removed.

Patent Document 1. Registration Patent Publication No. 10-0994608 Patent Document 2. Registration Patent Publication No. 10-1013037 Patent Document 3: Japanese Patent Application Laid-Open No. 10-2013-0017840

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is a first object of the present invention to provide an ink jet recording head capable of preventing a print layer or a print layer from being damaged by external impact, Integrated touch screen panel having a low contact resistance value and improved electrical characteristics.

A second object of the present invention is to provide a touch screen panel having a high yield and a high quality with a low defect rate by preventing the generation of out gas during the high temperature deposition process for forming a transparent electrode and preventing the disconnection or short- The present invention provides a manufacturing method of a window-integrated touch screen panel that can be mass-produced by a simple process.

A third object of the present invention is to provide a method of manufacturing a semiconductor device, which comprises forming a sensor layer (transparent electrode layer and metal electrode layer) and a print layer on different back surfaces of a window substrate, forming a sensor layer having a high process temperature, The present invention is intended to freely provide print layers of various colors including deep black and white as well as conventional black.

According to an aspect of the present invention, A transparent electrode layer formed on one surface of the window substrate; A metal electrode layer directly contacting the transparent electrode layer; A printing layer formed on the other surface of the window substrate; And a protective layer for protecting the print layer.

The present invention also provides a display device comprising: a window substrate; A transparent electrode layer formed on one surface of the window substrate; A metal electrode layer directly contacting the transparent electrode layer; A printing layer formed on the other surface of the window substrate; And a protection layer for protecting the print layer and the window substrate at the same time.

The window-integrated touch screen panel may further include a planarization layer for removing a step between the print layer and the window substrate.

The window substrate is a tempered glass, a general plate glass, or a transparent plastic.

The transparent electrode layer may be formed of indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium zinc tin oxide (IZTO), cadmium tin oxide (CTO), poly (3,4- , A carbon nanotube, a graphene, a silver nanowire, and a metal mesh.

The metal electrode layer may be formed of at least one selected from the group consisting of Au, Ag, Pt, Pd, Al, Ni, Cr, Mg, (Mo), and a mixture thereof.

The printing layer is an ink layer or a photo black matrix (BM) layer.

The protective layer for protecting the print layer is a scratch-proof, anti-fingerprint or anti-glare coating layer.

The protective layer for protecting the printing layer and the window substrate at the same time is a coating layer for preventing scratches, preventing fingerprints or preventing glare.

Wherein the planarization layer is a coating layer of phosphosilicate glass or a polymer resin.

The present invention also provides a method of manufacturing a semiconductor device, comprising the steps of: I) preparing a window substrate; II) depositing and patterning a transparent electrode layer on one side of the window substrate; III) depositing and patterning a metal electrode layer in direct contact with the transparent electrode layer; IV) forming a print layer on the other side of the window substrate; And V) forming a protective layer by patterning the anti-scratch, anti-fingerprint or anti-glare coating layer on the print layer in the same manner as the print layer.

The present invention also provides a method of manufacturing a semiconductor device, comprising the steps of: i) preparing a window substrate; ii) depositing and patterning a transparent electrode layer on one side of the window substrate; iii) depositing and patterning a metal electrode layer in direct contact with the transparent electrode layer; iv) forming a print layer on the other side of the window substrate; And v) forming a protective layer on the print layer with a scratch-proof, anti-fingerprint or anti-glare coating layer on the print layer.

The present invention also provides a method of manufacturing a semiconductor device, comprising the steps of: a) preparing a window substrate; b) depositing and patterning a transparent electrode layer on one side of the window substrate; c) depositing and patterning a metal electrode layer in direct contact with the transparent electrode layer; d) forming a print layer on the other side of the window substrate; e) forming a planarization layer on the top surface of the window substrate and the print layer; And f) forming a protective layer on the flattening layer with a scratch-resistant, fingerprint-forming or anti-glare coating layer on the flattened layer.

The printing layer is characterized in that a decoration film is laminated or an ink layer is formed by printing or photo processing.

A window-integrated touch screen panel according to the present invention prevents damage to the printed layer or the printed layer and the window substrate due to an external impact, eliminates steps between the printed layer and the window substrate, The characteristics are improved. In addition, according to the manufacturing method of the present invention, it is possible to prevent generation of out gas in a high-temperature deposition process for forming a transparent electrode, to prevent disconnection or short-circuiting of the transparent electrode, Can be mass-produced by a simple process. Further, by forming the print layer after the high-temperature deposition process for forming the transparent electrode, it is possible to realize various color colors including deep black and white according to the user's taste in addition to the conventional simple black color .

FIG. 1 shows a conventional G1-type capacitive type window-integrated touch screen panel (DPW).
FIG. 2 is a sectional view of a conventional G1-type capacitive type window-integrated touch screen panel (IOP).
FIG. 3 illustrates a structure of a window-integrated touch screen panel according to an exemplary embodiment of the present invention.
FIG. 4 illustrates a structure of a window-integrated touch screen panel according to another embodiment of the present invention. FIG.
5 illustrates a structure of a window-integrated touch screen panel according to another embodiment of the present invention.

Hereinafter, a window-integrated touch screen panel and a method of manufacturing the same according to the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a configuration (DPW) of a capacitive type window-integrated touch screen panel having a conventional G1 structure. A printed layer is formed of black ink on a window substrate such as tempered glass, and a thin film is formed thereon by ITO sputtering. And patterned by an ITO etching process, followed by attaching a metal electrode. In general, since the ITO layer is about 30 nm thick and the thickness of the black ink layer is more than 20 μm, it is about 700 times larger than that of the ITO layer. Therefore, when the ITO is sputtered, It is difficult to open or short circuit the pattern often occurs. In addition, out gas is generated on the black ink surface or oxidation of the black ink occurs during the high-temperature ITO sputtering process, which hinders the formation of the ITO layer, and it is difficult to realize a uniform quality ITO layer. In addition, in the ITO etching process, due to the step difference between the black ink and the cover window surface, the accuracy of exposure using masking is reduced, which is another cause of disconnection or short circuit of the pattern. There are also cases.

FIG. 2 shows a conventional IO type touch screen panel having a capacitance type window structure of a conventional G1 structure. After an ITO pattern is formed on a tempered glass through ITO sputtering and etching process, And an oligo metal electrode is attached. This can somewhat alleviate the problem of the above-mentioned capacitive type window-integrated touch screen panel of the DPW type, but in some cases, the conductive coloring layer connecting the metal circuit and the ITO electrode is disposed in the through region (not shown) There is a problem that the resistance value is increased due to high contact resistance due to the conductive coloring layer and the process cost is increased.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the conventional capacitive touch panel type touch screen panel having the DPW or IOP type. A transparent electrode layer formed on one surface of the window substrate; A metal electrode layer directly contacting the transparent electrode layer; A printing layer formed on the other surface of the window substrate; And a protective layer for protecting the print layer. FIG. 3 illustrates a structure of a window-integrated touch screen panel according to an exemplary embodiment of the present invention.

As shown in FIG. 3, the window substrate is generally made of a tempered glass or a general plate glass 10, but a transparent insulating plastic can be used in consideration of light transmittance. Examples of such a transparent insulating plastic material include polymethyl methacrylate ), Polycarbonate (PC), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyimide (PI), polyether sulfone (PES), polyphenylene sulfide (PPS), or polyarylate And the like are preferable examples.

A transparent electrode layer is formed on one surface of the window substrate. As the transparent electrode layer, an indium tin oxide (ITO) layer 20 as shown in FIG. 3 is generally used. In addition, indium zinc oxide (IZO), zinc oxide (ZnO) Indium zinc tin oxide (IZTO), cadmium tin oxide (CTO), poly (3,4-ethylenedioxythiophene), carbon nanotubes, graphene, silver nanowires, and metal mesh May be preferably used.

Further, a metal electrode layer 30 directly contacting the transparent electrode layer is formed. The metal electrode layer 30 is formed of a metal such as Au, Ag, Pt, Pd, Al, Ni, Cr, Mg, ), Molybdenum (Mo), and mixtures thereof can be preferably used. The metal electrode layer 30 electrically connects an electrical signal generated in the transparent electrode layer to an external circuit. In the present invention, the transparent electrode and the metal electrode are in direct contact with each other to have a low contact resistance value, Can be improved.

On the other side of the window substrate, a printing layer 40 is formed. The printing layer 40 is an ink layer or a photo black matrix (BM) layer. The ink layer, such as a black ink or a color ink, And shields the metal electrode of the touch sensor from being viewed from the outside.

In order to protect the print layer 40 from an external impact or an external environment, a coating layer having scratch prevention, fingerprint prevention, or anti-glare functions is patterned to form the protective layer 50.

In addition, the present invention provides the following manufacturing method 1 for manufacturing a window-integrated touch screen panel according to an embodiment of the present invention. That is, the present invention provides: I) preparing a window substrate; II) depositing and patterning a transparent electrode layer on one side of the window substrate; III) depositing and patterning a metal electrode layer in direct contact with the transparent electrode layer; IV) forming a print layer on the other side of the window substrate; And V) forming a protective layer by patterning the anti-scratch, anti-fingerprint or anti-glare coating layer on the print layer in the same manner as the print layer.

First, a transparent electrode layer (ITO electrode layer) is deposited on one surface of a window substrate by a conventional ITO sputtering process and is patterned by photolithography, etching, or laser processing to form a transparent electrode layer (ITO electrode layer). Then, a metal electrode layer such as copper (Cu) which is in direct contact with the transparent electrode layer (ITO electrode layer) is deposited and patterned. Then, an ink layer such as black ink or color ink is decorated on the other side of the window substrate by a printing or photo process to form a printing layer by appropriately patterning or decorating the decoration film. In the present invention, before forming the print layer on the window substrate, the ITO pattern is sputtered on the flat substrate of the disk state by the transparent electrode layer (ITO electrode layer) formed on the window substrate and is patterned by the etching so that the integrity of the ITO pattern is very high, And the etching process is performed in an environment where only the ITO and the substrate are purely present, so that there is no additional defective element and the defect rate is low.

Finally, the protective layer can be formed by patterning the print layer in the same manner as the print layer, to prevent scratches, prevent fingerprints, or prevent glare.

The present invention also provides a display device comprising: a window substrate; A transparent electrode layer formed on one surface of the window substrate; A metal electrode layer directly contacting the transparent electrode layer; A printing layer formed on the other surface of the window substrate; And a protection layer for protecting the print layer and the window substrate at the same time. FIG. 4 illustrates a structure of a window-integrated touch screen panel according to another embodiment of the present invention.

The structure of the window-integrated touch screen panel shown in Fig. 4 is the same as that of Fig. 3 except that the window glass substrate is made of tempered glass or a general pane glass 10; An ITO electrode layer 20; A metal electrode layer (30) directly contacting the ITO electrode layer; The structure and function of the print layer 40 formed on the other surface of the tempered glass or the ordinary plate glass 10 are the same, and therefore, only differences in structure will be described below.

4, a protective layer 50 is formed to cover both the print layer 40 and the tempered glass or the general plate glass 10 as the window substrate. The protective layer 50 is formed to prevent scratching, Or anti-glare coating layer so as to simultaneously protect the print layer and the window substrate from external impact or external environment.

In addition, the present invention provides the following manufacturing method 2 for manufacturing a window-integrated touch screen panel according to another embodiment of the present invention. That is, the present invention provides a method of manufacturing a semiconductor device, comprising the steps of: i) preparing a window substrate; ii) depositing and patterning a transparent electrode layer on one side of the window substrate; iii) depositing and patterning a metal electrode layer in direct contact with the transparent electrode layer; iv) forming a print layer on the other side of the window substrate; And v) forming a protective layer on the print layer with a scratch-proof, anti-fingerprint or anti-glare coating layer on the print layer.

The manufacturing method 2 is slightly different from the above-described manufacturing method 1 only in the process of forming the protective layer in the step v). In the step v) of the manufacturing method 2, the printing layer 40 and the tempered glass The protective layer 50 is formed of a scratch-resistant, finger-print-preventing or anti-glare coating layer without special patterning so as to cover both the common plate glass 10 and the general plate glass 10, .

FIG. 5 illustrates a structure of a window-integrated touch screen panel according to another embodiment of the present invention. Referring to FIG. 5, a planarizing layer for removing a stepped portion of a printed layer 40 and a tempered glass or a general plate glass 10, . This planarization layer is formed of a phosphosilicate glass (PSG) or a coating layer of a polymer resin.

In addition, the present invention provides the following manufacturing method 3 for manufacturing a window-integrated touch screen panel according to another embodiment of the present invention. That is, the present invention provides a method comprising the steps of: a) preparing a window substrate; b) depositing and patterning a transparent electrode layer on one side of the window substrate; c) depositing and patterning a metal electrode layer in direct contact with the transparent electrode layer; d) forming a print layer on the other side of the window substrate; e) forming a planarization layer on the top surface of the window substrate and the print layer; And f) forming a protective layer on the flattening layer with a scratch-resistant, fingerprint-forming or anti-glare coating layer on the flattened layer.

The manufacturing method 3 differs from the manufacturing method 2 in that a planarizing layer of step e) is further formed. The planarizing layer is formed by coating a phosphosilicate glass (PSG) with a spin coating method, Or by curing the UV curable monomer to form a coating layer of the polymer resin, and then forming a protective layer on the planarized layer with anti-scratch, anti-fingerprint or anti-glare coating layers to produce a window-integrated touch screen panel.

Hereinafter, specific examples will be described in detail.

( Example  One)

A tempered glass substrate 10 having a thickness of 0.7 mm was prepared and ITO was sputter deposited on one surface of the tempered glass substrate 10 and heated at 250 캜 to obtain a transparent ITO electrode film having a thickness of 30 nm and this was etched and patterned A transparent ITO electrode layer 20 was formed. Next, a metal electrode layer made of copper (Cu) material directly contacting the ITO electrode layer 20 was deposited and patterned to a thickness of 1 μm to form a metal electrode layer 30. [ Thereafter, color ink was coated on the other surface of the tempered glass substrate 10 by a silk screen printing process to a thickness of 20 탆 and patterned to form a printing layer 40. Finally, a protective layer 50 was formed by patterning a scratch ring coating layer having a thickness of 50 nm on the print layer 40 in the same manner as the print layer 40, thereby manufacturing a window-integrated touch screen panel as shown in FIG.

( Example  2)

4, except that the protective layer 50 was formed of a scratch-resistant coating layer having a thickness of 50 nm so as to cover both the print layer 40 and the tempered glass substrate 10 without special patterning. An integrated touch screen panel was fabricated.

( Example  3)

5, except that a phosphosilicate glass (PSG) was coated by a spin coating method to further form a planarization layer 60 having a thickness of 30 탆, .

According to the manufacturing method of the present invention, it is possible to prevent generation of out gas in a high-temperature deposition process for forming a transparent electrode and to prevent disconnection or short-circuiting of the transparent electrode, thereby achieving a high yield and high quality window- And a printing layer is formed after a high-temperature deposition process for forming a transparent electrode. Thus, the color of the printing layer can be adjusted to various colors including deep black and white in addition to the conventional simple black color, It is possible to implement colors. In addition, the window-integrated touchscreen panel manufactured according to the above-described method can prevent damage to the print layer, the print layer, and the window substrate due to an impact from the outside, eliminate steps between the print layer and the window substrate, So that the electrical characteristics can be improved by having a low contact resistance value.

10: tempered glass substrate 20: ITO electrode layer
30: metal electrode layer 40: printing layer
50: protective layer 60: planarization layer

Claims (14)

A window substrate;
A transparent electrode layer formed on one surface of the window substrate;
A metal electrode layer directly contacting the transparent electrode layer;
A printing layer formed on the other surface of the window substrate; And
And a protective layer for protecting the print layer. A window substrate;
A transparent electrode layer formed on one surface of the window substrate;
A metal electrode layer directly contacting the transparent electrode layer;
A printing layer formed on the other surface of the window substrate; And
And a protective layer for protecting the print layer and the window substrate at the same time. The touch panel of claim 2, further comprising a flattening layer for removing a step between the printed layer and the window substrate. The touch panel according to any one of claims 1 to 3, wherein the window substrate is a tempered glass, a general plate glass, or a transparent plastic. The transparent electrode layer according to any one of claims 1 to 3, wherein the transparent electrode layer is formed of indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium zinc tin oxide (IZTO), cadmium tin oxide (CTO), poly (3,4-ethylenedioxythiophene), carbon nanotubes, graphene, silver nanowires, and metal meshes. . The method according to any one of claims 1 to 3, wherein the metal electrode layer comprises at least one of gold (Au), silver (Ag), platinum (Pt), palladium (Pd), aluminum (Al), nickel (Ni) Wherein at least one material selected from the group consisting of Cr, Mg, Cu, Mo, and mixtures thereof is used. 4. The panel-integrated touch screen panel according to any one of claims 1 to 3, wherein the print layer is an ink layer or a photo black matrix (BM) layer. The touch panel of claim 1, wherein the protective layer for protecting the print layer is a scratch resistant, anti-fingerprint or anti-glare coating layer. The integrated window-type touch screen panel according to claim 2 or 3, wherein the protective layer for simultaneously protecting the print layer and the window substrate is a scratch-resistant, fingerprint-preventing or anti-glare coating layer. 4. The panel according to claim 3, wherein the flattening layer is a coating layer of phosphosilicate glass or a polymer resin. I) preparing a window substrate;
II) depositing and patterning a transparent electrode layer on one side of the window substrate;
III) depositing and patterning a metal electrode layer in direct contact with the transparent electrode layer;
IV) forming a print layer on the other side of the window substrate; And
V) forming a protective layer by patterning the anti-scratch, anti-fingerprint or anti-glare coating layer on the print layer in the same manner as the print layer. i) preparing a window substrate;
ii) depositing and patterning a transparent electrode layer on one side of the window substrate;
iii) depositing and patterning a metal electrode layer in direct contact with the transparent electrode layer;
iv) forming a print layer on the other side of the window substrate; And
v) forming a protective layer with a scratch-resistant, fingerprint-forming or anti-glare coating over the printed layer. a) preparing a window substrate;
b) depositing and patterning a transparent electrode layer on one side of the window substrate;
c) depositing and patterning a metal electrode layer in direct contact with the transparent electrode layer;
d) forming a print layer on the other side of the window substrate;
e) forming a planarization layer on the top surface of the window substrate and the print layer; And
f) forming a protective layer on the flattening layer with anti-scratch, anti-fingerprint or anti-glare coatings. The method as claimed in any one of claims 11 to 13, wherein the printing layer is formed by laminating a decoration film or forming an ink layer by printing or photolithography.

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