KR20160064621A - Touch screen substrate and manufacturing method of the same - Google Patents

Abstract

The present invention relates to a touch screen substrate and a manufacturing method thereof. By implementing a composite layer which simultaneously performs a function of a blackened layer, a function of an adhesive layer, and a function of a conductive layer, the touch screen substrate may be thinned, and a manufacturing process of the same may be simplified. According to the present invention, the touch screen substrate comprises: a substrate; the composite layer formed on at least one surface of the substrate; and an electrode layer formed on at least one surface of the composite layer, wherein the composite layer is one type of an oxide selected from the group consisting of NiNb, TiCu, and TiNb.

Description

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

The present invention relates to a touch screen substrate and a manufacturing method thereof.

In recent years, various element technologies have been emerging one after another in accordance with the era of high informationization using the keyword "multimedia". Particularly, a flat panel display (FPD) is used as a display device, and a touch screen panel (TSP) is used on the flat panel display device as an operation and input device.

The principle of the touch screen substrate is optical, ultrasonic, capacitive and resistive type according to the use, and it is not damaged even if it is used violently in public facilities such as a station and a library. In a car navigation system, A thin and lightweight electrostatic capacity type is used in a strong manner and a portable terminal.

[0003] A capacitive type touch screen substrate is the most widely used liquid crystal display device requiring a thin film type, and a typical touch screen substrate is formed of a substrate, a seed layer, a blackening layer, and a conductive layer.

Such a touch screen substrate is disadvantageous in that it is not only complicated to manufacture due to the formation of each layer separately but also difficult to use when it is required to be thin.

Accordingly, in Korean Patent Laid-Open Publication No. 10-2012-0107248 (published on October 22, 2012), a pattern is formed on an insulating substrate by a plating method without using a transparent conductive film, thereby realizing a pattern of a transparent portion and a conductor portion simultaneously, A manufacturing method of a touch screen substrate capable of manufacturing a low cost touch screen panel and a touch screen substrate manufactured thereby are disclosed.

In addition, in Korean Patent Laid-Open Publication No. 10-2014-0028890 (published on Apr. 3, 2014), a panel including a base film and a touch sensing unit is bonded to the tempered glass substrate so that the touch sensing unit faces the tempered glass substrate, And a method of manufacturing the touch screen panel. The touch screen panel is fabricated by using the touch screen panel. The touch screen panel has improved light transmittance and low manufacturing cost.

Thus, although a conventional method of manufacturing a touch screen panel is simple and provides various methods of improving light transmittance, a technique of manufacturing a touch screen substrate by forming a black layer and an adhesive layer into one layer is provided I can not.

Korean Patent Publication No. 10-2012-0107248 Korean Patent Publication No. 10-2014-0028890

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to provide a touch screen substrate which can simplify a manufacturing method of a touch screen substrate by forming a composite layer simultaneously implementing a blackening layer and an adhesive layer, And a manufacturing method thereof.

According to an aspect of the present invention, there is provided a touch screen substrate comprising: a substrate; A composite layer formed on at least one side of the substrate; And an electrode layer formed on at least one surface of the composite layer, wherein the composite layer is one selected from the group consisting of NiNb, NiTiTiCu, TiNb, NiCu, NbCu, and oxides thereof.

The composite layer may have a reflectance of less than 20%.

The composite layer may have a thickness of 0.05 to 0.5 mu m.

The electrode layer may be formed on the upper or lower surface of the composite layer.

The electrode layer may have a thickness of 0.1 to 1 占 퐉.

According to another aspect of the present invention, there is provided a method of manufacturing a touch screen substrate, including: forming a patterned composite layer on a substrate; And forming an electrode layer on the patterned composite layer, wherein the composite layer is one selected from the group consisting of NiNb, NiTiTiCu, TiNb, NiCu, NbCu, and oxides thereof.

According to another aspect of the present invention, there is provided a touch screen panel including the touch screen substrate.

As described above, the touch screen substrate and the method of manufacturing the same according to the present invention can improve the productivity by simplifying the process of the touch screen substrate by forming a composite layer that simultaneously functions as the black layer, the adhesive layer, and the conductive layer , The touch screen substrate can be made thin.

In addition, when the touch screen substrate is introduced into the touch screen panel, the touch screen panel can be made thinner.

1 shows a touch screen substrate according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed embodiments, but is capable of many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

First, a touch screen substrate according to an embodiment of the present invention will be described.

1 shows a touch screen substrate according to the present invention.

Referring to FIG. 1, a touch screen substrate 100 according to the present invention includes a substrate 110, a complex layer 120, and an electrode layer 130.

The substrate 110 In the field of touch screen substrate with insulating substrate A commonly used hard or soft material may be used. The rigid substrate may be made of glass or the like and the flexible substrate may be made of a material selected from the group consisting of polyethylene terephthalate (PET), polyethersulfone (PES), polycarbonate (PC), polyethylene (PE), polyimide (PI), polydimethylsiloxane (PDMS), and cycloaliphatic ) And COP (Cyclo-Olefin Polymer) may be used, but the substrate 110 is not particularly limited and may be variously used depending on the type and environment of the electronic device to which the touch screen substrate is applied.

For example, when a soft substrate such as PDMS (polydimethylsiloxane) is used, the touch screen substrate 100 can be easily manufactured without damaging cracks or the like because it is flexible. In addition, when a rigid substrate such as tempered glass is used, the tempered glass has a bending strength of 3 to 5 times, an impact resistance of 3 to 8 times stronger than that of glass, and excellent heat resistance, And the inner structure of the touch screen substrate 100 can be protected.

The composite layer 120 is disposed on at least one surface of the substrate 110 and can simultaneously realize the functions of the blackening layer, the adhesive layer, and the conductive layer.

At this time, the blackening is usually used as a method for enhancing the visibility without blurring (light diffusion) or blackening (light absorption) of the surface of the metal layer by using an acid, an alkali or the like, have. For example, when a blackening layer is formed on a metal mesh for shielding electromagnetic waves generated in a PDP, the reflection of light from the electromagnetic wave shielding metal is suppressed, and the display image of the display can be visually recognized with high contrast.

The touch screen substrate according to the present invention may be formed as one composite layer so as to perform both the blackening layer serving as an antireflection function and the adhesive layer for increasing the adhesion between the substrate and the electrode layer, can do.

Such a composite layer 120 NiNb, NiTi TiCu, TiNb, NiCu, NbCu, and oxides thereof.

When the composite layer 120 is formed of the above-described material, not only the antireflection effect and the adhesion force are excellent, but also the conduction characteristics can be obtained by adjusting the ratio of Cu. In addition, when the composite layer 120 is formed of the above-described material, since Ti and Ni are combined with oxygen to realize various colors, there is an advantage that the effect of adhesion and reflection power can be improved.

In addition, the composite layer 120 may further include a material imparted with antireflection function and adhesion. For example, one or two or more selected from the group consisting of an oxide of a metal, a nitride of a metal, an oxynitride of a metal, and a carbide of a metal may be used.

The reflectance of the composite layer 120 formed of the above-described material is preferably less than 20%, more preferably less than 10%. When the reflectance of the multiple layer 120 is more than 20%, sparkling due to the specific luster of the metal and high reflectivity is caused. Further, the composite layer 120 may have a thickness of 0.05 to 0.5 占 퐉, preferably 0.1 to 0.3 占 퐉, and more preferably 0.05 to 0.2 占 퐉. If the thickness of the composite layer 120 is less than 0.05 탆, the antireflection effect and adhesion effect may be insufficient. On the contrary, when the thickness of the composite layer 120 exceeds 0.5 탆, it is difficult to make the touch screen substrate thin .

The electrode layer 130 may be located on at least one side of the complex layer 120. The electrode layer 130 is located on the upper side or the lower side of the complex layer 120 so that the resistance can be lowered to improve the sensing sensitivity.

In this case, the electrode layer 130 may be a metal containing Ni, Al, Fe, Mo, Zn, Cu, Al, Pd, Ag, Au, Sn, SUS or an alloy thereof, indium tin oxide (ITO) zinc oxide (IZTO), indium zinc oxide (IZTO), indium zinc oxide (IZO), indium gallium zinc oxide (IGTO), aluminum zinc oxide (AZO), antimony tin oxide Gallium zinc oxide (GZO), IrOx, RuOx, TiO2, or a combination thereof. However, the material of the electrode layer 130 in the present invention is not particularly limited, and any material can be used for the touch screen substrate.

When the thickness of the electrode layer 130 is less than 0.1 탆, it is difficult to manufacture the electrode layer 130. When the thickness of the electrode layer 130 is more than 1 탆, The thickness of the touch screen substrate is increased, and the pattern of the electrode layer 130 may collapse.

Accordingly, the touch screen substrate according to the present invention has a structure in which the black layer for preventing reflection and the composite layer for simultaneously performing the role of the substrate and the adhesive layer for bonding the electrode layer, simplifies the structure of the touch screen substrate However, there is an advantage that the entire thickness of the touch screen substrate can be reduced to make it thinner.

Next, a manufacturing method of a touch screen substrate will be described.

A method of manufacturing a touch screen substrate according to the present invention includes: forming a patterned composite layer on a substrate; And forming an electrode layer on the patterned composite layer, wherein the composite layer is one selected from the group consisting of NiNb, NiTiTiCu, TiNb, NiCu, NbCu, and oxides thereof.

The step of forming a patterned composite layer on a substrate may form a patterned composite layer on a substrate subjected to a pretreatment process such as degreasing, cleaning and the like. First, a composite layer is formed over the entire surface of the substrate, and then patterned, such as photolithography, to form the patterned composite layer of FIG.

Next, the step of forming an electrode layer on the patterned composite layer includes forming an electrode layer on the formed composite layer, which includes physical vapor deposition (PVD), chemical vapor deposition (CVD), metal-organic molecular beam epitaxy (MOMBE) A wet process such as plating or the like. At this time, if the deposition method, the deposition direction, and the process time are controlled, the form or range of formation of the multiple layer can be variously changed.

Therefore, the touch screen substrate manufactured according to the manufacturing method of the present invention can reduce the manufacturing time of the touch screen substrate by forming the blackening layer serving as an anti-reflection and the adhesive layer for bonding the substrate and the electrode layer to one layer, There is an advantage that the manufacturing process can be simplified.

The touch screen panel may be applied to various types of touch screen panels. The touch screen panel may include an OLED display panel, a liquid crystal display (LCD), a cathode ray tube (CRT) The present invention can be applied to a display device such as a PDP. More specifically, the touch screen panel is used for a portable electronic device such as a mobile phone, a personal digital assistant (PDA), a navigation device, a digital camera, a portable multimedia player (PMP), a notebook computer, , Personal computers, automobiles, industrial equipment, medical equipment, and the like.

Hereinafter, the present invention will be described in more detail with reference to the following examples. However, it should be understood that the present invention is not limited thereto.

≪ Example 1 >

NiNb having a thickness of 0.2 mu m was sputtered on a glass substrate (1373 glass, 0.7 mm thick) by a photolithography method to form a composite layer. Ni of 0.2 탆 thickness was sputtered on the composite layer and patterned by a photolithography method to form an electrode layer.

≪ Example 2 >

A touch screen substrate was prepared in the same manner as in Example 1, except that TiNb was used as the composite layer.

≪ Example 3 >

A touch screen substrate was prepared in the same manner as in Example 1, except that TiCu was used as the composite layer.

≪ Comparative Example 1 &

A touch screen substrate was prepared in the same manner as in Example 1, except that the black layer and the adhesive layer were respectively formed to 0.2 μm and 0.2 μm, respectively.

≪ Comparative Example 2 &

A touch screen substrate was prepared in the same manner as in Example 1 except that NiCu was used as the multiple layer.

≪ Comparative Example 3 &

A touch screen substrate was prepared in the same manner as in Example 1, except that the composite layer was formed to have a thickness of 0.01 탆.

≪ Comparative Example 4 &

A touch screen substrate was prepared in the same manner as in Example 1 except that the composite layer was formed to a thickness of 0.7 탆.

<Experimental Example>

The analyzes according to Examples 1 to 3 and Comparative Examples 1 to 4 are shown in Tables 1 and 2 below.

1) Reflectance measurement

The reflectances of the above Examples 1 to 3 and Comparative Examples 1 to 4 were measured. At this time, the reflectance was measured at the wavelength of visible light (500 nm), and the reflectance of each was observed by a spectroscope. The reflectance measurement results are shown in Table 1 below.

Visible light wavelength (500nm) Example 1 18% Example 2 15% Example 3 17% Comparative Example 1 24% Comparative Example 2 21% Comparative Example 3 28% Comparative Example 4 27%

As shown in Table 1, in Examples 1 to 3 in which NiNb, TiNb and TiCu were used and a composite layer was formed to a thickness of 0.2 탆 according to the present invention, the average reflectance was about 16% Able to know.

However, in the case of Comparative Example 1 in which the blackening layer and the adhesive layer were respectively formed, the reflectance was 24%. In Comparative Example 2 in which the composite layer was made of NiCu, the reflectance was 21% 3, the reflectance was 28%, and in the case of Comparative Example 4 in which the thickness of the multiple layer was 0.7 m, the reflectance was 27%. Therefore, it can be seen that Comparative Examples 1 to 4 have an average reflectance of 25%, which means that the antireflection effect is insignificant.

2) Adhesion measurement

The adhesive strengths of Examples 1 to 3 and Comparative Examples 1 to 4 were measured. At this time, 0.5 * 0.5 cm of a tape (3M Company, 9495LE) was attached to the upper part of the electrode layer, and Brookfield. A 90 degree test was performed using a CT3 (Texture Analyzer).

(?: Very excellent,?: Good, X: poor)

Adhesion Example 1 ○ Example 2 ○ Example 3 ○ Comparative Example 1 X Comparative Example 2 △ Comparative Example 3 X Comparative Example 4 X

As shown in Table 2, in Examples 1 to 3 in which a composite layer was formed using NiNb, TiNb, and TiCu according to the present invention, it can be seen that the adhesive strength is excellent.

However, in Comparative Example 1 in which the blackening layer and the adhesive layer were respectively formed, and in Comparative Example 3 and Comparative Example 4 in which the thickness of the multiple layer was outside the range of 0.05 to 0.5 占 퐉, the adhesive strength was poor. It can be seen that the adhesive strength is good. Therefore, it can be seen that the adhesiveness of Comparative Examples 1 to 4 is almost inferior.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is to be understood that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

100: touch screen substrate
110: substrate
120: multiple layer
130: electrode layer
200: Touch screen panel

Claims (7)

Board;
A composite layer formed on at least one side of the substrate; And
And an electrode layer formed on at least one surface of the multiple layer,
Wherein the composite layer is one selected from the group consisting of NiNb, NiTiTiCu, TiNb, NiCu, NbCu, and oxides thereof. The method according to claim 1,
Wherein the composite layer has a reflectance of less than 20%. The method according to claim 1,
Wherein the composite layer has a thickness of 0.05 to 0.5 占 퐉. The method according to claim 1,
Wherein the electrode layer is formed on an upper portion or a lower portion of the composite layer. The method according to claim 1,
Wherein the electrode layer has a thickness of 0.1 to 1 占 퐉. Forming a patterned composite layer on a substrate; And
And forming an electrode layer on the patterned composite layer,
The method of claim 1, wherein the multiple layer is one selected from the group consisting of NiNb, NiTiTiCu, TiNb, NiCu, NbCu, and oxides thereof. A touch screen panel comprising the touch screen substrate of claim 1.

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