KR102290010B1 - Touch Screen Pannel - Google Patents

Abstract

The present invention relates to a touch screen panel, and more particularly, to a touch screen panel in which a short-circuit portion is formed in a blackening layer formed on a metal pattern layer to have an anti-reflection effect and to prevent a moiré phenomenon.

Description

Touch Screen Panel

The present invention relates to a touch screen panel.

Recently, various input devices such as a keyboard, a mouse, a trackball, a joystick, and a digitizer have been used to configure an interface between a user and a home appliance or various information and communication devices.

However, using the input device as described above causes inconvenience such as having to learn how to use and occupying space, so that it is difficult to improve the quality of the product. Accordingly, the demand for an input device that is convenient, simple, and capable of reducing malfunctions is increasing day by day.

In response to such a request, a touch screen panel in which a user directly contacts a screen with a hand or a pen to input information has been proposed.

The touch screen panel is applied to various display devices because it is simple, has few malfunctions, allows input without using a separate input device, and allows the user to quickly and easily manipulate the contents displayed on the screen. is becoming

The touch screen panel is a resistive film method that determines the touched position as a voltage gradient depending on the resistance in a state where a DC voltage is applied by forming a metal electrode on the upper or lower plate according to the method of detecting the touched part ( resistive type), a capacitive type that forms an equipotential on the conductive film and detects the position where the voltage change of the upper and lower plates according to the touch occurs to detect the touched part (capacitive type), LC value induced by the electronic pen touching the conductive film It can be divided into an electromagnetic type that detects a touched portion by reading the . In addition, an optical method, an ultrasonic method, etc. are known.

In general, a touch screen panel is manufactured by bonding a transparent electrode film having a transparent electrode on its surface to a cover glass.

The transparent electrode film is manufactured by coating an electrode material, ie, indium tin oxide (ITO) on the surface, and forming a sensing electrode circuit through an etching process.

However, the conventional touch screen panel has difficulty in implementing multi-touch and lowering the touch speed due to the high resistance of the ITO (Indium Tin Oxide) electrode on a 13-inch or larger screen.

In addition, indium, which is a main material of ITO (Indium Tin Oxide), is a rare element and has a risk of depletion, and its high price increases the manufacturing cost of the touch screen panel.

In particular, in a large-area touch screen panel of 13 inches or more, an indium tin oxide (ITO) electrode has a problem of excessive power consumption due to high resistance.

In addition, a touch screen panel can be manufactured by forming AgNW (Silver Nano Wire) on the entire surface of a transparent substrate and forming a transparent electrode by etching or laser processing. When forming a transparent electrode using AgNW (Silver Nano Wire) Although the touch speed is excellent due to the low resistance, there is a problem of low transparency.

In order to solve the above problems, as shown in FIG. 7 , in Korean Patent Application Laid-Open No. 2014-0014843 , a blackening material layer 120 is formed on a substrate 110 , and a blackening material layer 120 is formed on the blackening material layer 120 . A method for manufacturing a transparent electrode of a touch panel is disclosed, which includes printing a metal electrode pattern 130 and exposing a transparent substrate using the metal electrode pattern 130 as an etching barrier.

Specifically, first, glass, transparent film, polyethylene resin (polyethylene terephtalete, PET), PC (polycarbonate), PES (polyether sulfone), PI (polyimide), PMMA (PolyMethly MethaAcrylate), etc. A film material or the like may be applied to the substrate 110 .

A process of forming the blackening material layer 120 on the substrate 110 is performed. The blackening material layer 120 means a black metal oxide or metal nitride material. For example, any one selected from CuO, CrO, FeO, Ni2O3, and AlN may be applied, and a black-based material capable of suppressing the reflectivity of the metal electrode pattern 130 to be described later may be applied. Although various coating methods may be applied to the technique of laminating the blackening material layer 120 on the substrate 110, a method of depositing and forming by applying various thin film deposition methods such as sputtering and evaporation is presented as an example. .

Thereafter, a process of printing the metal electrode pattern 130 on the upper surface of the blackening material layer 120 may be performed. The metal electrode pattern 130 may be implemented using any one of silver (Ag), copper (Cu), and aluminum (Al), and the metal electrode pattern 130 may be formed in various ways according to design. However, the pattern can be implemented in the form of a mesh.

The metal electrode pattern 130 may be formed by various pattern printing methods, such as a deposition method using a mask, a printing method, etc., but a transparent electrode is directly printed on the substrate using a reverse offset printing method. Films can be made.

Thereafter, a high-temperature sintering process may be added to the printed electrode pattern 130 . In this case, the temperature of the sintering process may be carried out in the range of 80 ~ 300 ℃.

The sintering process serves to harden the electrode pattern 130 and improve adhesion between the electrode pattern 130 and the blackening material layer 120 .

Thereafter, the blackening material layer 120 is selectively etched to realize the structure of the electrode pattern 130 stacked on the blackening material layer 120, and the substrate ( 110) so that the process of exposing the region can be implemented. In this case, the electrode pattern 130 acts as an etching barrier to prevent the blackening material layer 120 on the lower surface from being etched.

Thereafter, the completed electrode pattern is implemented in a structure in which a metal electrode pattern 130 is formed on an upper portion, and a blackening pattern that is an etched pattern of the blackening material layer 120 is stacked on a lower portion thereof.

The electrode pattern of this structure eliminates the problem of increasing reflected visible light due to the light reflection characteristics of the metal electrode pattern 130 due to the presence of the blackening pattern having a rectangular cross-section as described above, thereby minimizing light reflection, thereby reducing the optical properties of the transparent electrode. The advantage of improving the characteristics is realized.

However, there is a problem in that the moiré phenomenon due to the regularly arranged metal electrode pattern 130 cannot be prevented.

Korean Patent Publication No. 2014-0014843

The present invention has been devised to solve the above-described problem, and an object of the present invention is to provide a touch screen panel that has an anti-reflection effect and prevents a moiré phenomenon.

A touch screen panel of the present invention for achieving the above object includes a substrate for a touch screen panel, a metal pattern layer formed in the form of an electrode circuit on one surface of the substrate for a touch screen panel, and a blackening layer formed on the metal pattern layer Including, the blackening layer is characterized in that a short circuit is formed.

A plurality of the short-circuiting portions may be formed, the short-circuiting portions may be arranged irregularly, the blackening layer may be formed with the same or similar line width as the metal pattern layer, and the metal pattern layer may have a line width of 1.0 μm or more.

A touch screen panel of the present invention for achieving the above object includes a substrate for a touch screen panel, a metal pattern layer formed on one surface of the substrate for a touch screen panel, and a plurality of metal pattern layers formed to be short-circuited with each other It is characterized in that it includes a blackening layer.

The spacing between the short circuit portions formed between the blackening layers may be irregular.

The blackening layer may be formed with a plurality of blackening layers spaced apart from each other in a band shape in the longitudinal direction of the metal pattern layer.

The blackening layer may be formed with a plurality of blackening layers spaced apart from each other in a band shape in a width direction of the metal pattern layer.

The blackening layer may be formed to surround side surfaces and upper surfaces of the metal pattern layer.

According to the touch screen panel of the present invention as described above, there are the following effects.

A short-circuit portion is formed in the blackening layer formed on the metal pattern layer to have an antireflection effect and to prevent the moiré phenomenon.

The line width of the metal pattern layer is 1.0 μm or more, so that it is possible to facilitate the formation of the metal pattern layer and at the same time make the metal pattern layer invisible to the human eye.

1 is a cross-sectional view of a touch screen panel according to a preferred embodiment of the present invention.
2 is an enlarged plan view of a touch screen panel according to a preferred embodiment of the present invention;
3 is an enlarged plan view of a touch screen panel according to another embodiment of the present invention;
4 is an enlarged plan view of a touch screen panel according to another embodiment of the present invention;
5 is an enlarged plan view of a touch screen panel according to another embodiment of the present invention;
6 is a cross-sectional view of a touch screen panel according to another embodiment of the present invention.
7 is a view showing a conventional method of manufacturing a touch screen panel.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

For reference, among the components of the present invention to be described below, for the same components as those of the prior art, reference will be made to the above-described prior art, and a separate detailed description thereof will be omitted.

1 and 2, the touch screen panel according to the present invention includes a substrate 1 for a touch screen panel, and a metal pattern formed in the form of an electrode circuit on one surface of the substrate 1 for a touch screen panel. It includes a layer 20 and a blackening layer 30 formed on the metal pattern layer 20 , wherein a short circuit part 31 is formed in the blackening layer 30 .

The base material 1 for a touch screen panel is provided with a flat top surface and a flat bottom surface.

The substrate 1 for a touch screen panel is a substrate of a transparent material, for example, using a transparent substrate such as tempered glass, a transparent film, and a transparent plastic. In addition, any substrate that is transparent and can be used as a touch screen panel is used make it clear that it is possible

The metal pattern layer 20 is formed on one surface (upper surface) of the base material 1 for a touch screen panel. The metal pattern layer 20 is formed in a regular pattern.

The metal pattern layer 20 is arranged in a lattice shape to form a cross section 21 in which at least two or more of the metal pattern layer 20 cross each other.

The metal pattern layer 20 is, for example, any one of gold (Au), silver (Ag), copper (Cu), aluminum (Al), and nickel (Ni), and is a substrate for the touch screen panel through electroplating. The plating on one side of (1) is an example.

The upper surface of the metal pattern layer 20 is formed flat.

The blackening layer 30 is formed on the upper surface of the metal pattern layer 20 .

The blackening layer 30 is formed to have a line width equal to, similar to, or smaller than that of the metal pattern layer 20 .

The blackening layer 30 is formed of a metal material having a black-based color. For this reason, the reflection by the metal is reduced, so that a fine circuit that is difficult to be recognized by the human eye (without visibility) can be easily implemented, thereby increasing the transparency.

The blackening layer 30 is formed as described above and is diffused to maximize the anti-reflection effect.

In addition, when the line width of the metal pattern layer 20 is 1.5 μm or less, since the metal pattern is not visible even without a separate treatment, the above treatment is performed only for the metal pattern layer 20 having a line width of 1.5 μm or more.

Furthermore, a short circuit part 31 is formed in the blackening layer 30 . Accordingly, the blackening layer 30 is not formed on a portion of the metal pattern layer 20 . A plurality of short-circuiting parts 31 are formed, and the short-circuiting parts 31 may be irregularly arranged. The shorting part 31 may be formed in various ways, such as a band shape such as an oblique line, a curved line, a straight line, or the like, or a planar shape having a predetermined area such as a circle or a polygon. The shorting part 31 may be irregular in size, shape, arrangement, and the like.

The blackening layer 30 in which the short circuit part 31 is formed is irregularly formed on the upper surface of the at least two or more metal pattern layers 20 of the crossing section 21 .

In this way, the blackening layer 30 is formed, and the moiré phenomenon is prevented.

Hereinafter, another embodiment of the present invention will be described. In another embodiment to be described below, a detailed description of the same configuration as in the above-described embodiment will be omitted.

As described above, the touch screen panel includes, as shown in FIG. 3 , a substrate 1 for a touch screen panel, a metal pattern layer 20 formed on one surface of the substrate 1 for a touch screen panel, and the It is characterized in that it includes a plurality of blackening layers 30 ′ formed by shorting each other along the longitudinal direction of the metal pattern layer 20 .

The spacing between the short circuit portions 31 formed between the plurality of blackening layers 30 ′ is irregular.

As described above, the touch screen panel includes, as shown in FIG. 4 , a substrate 1 for a touch screen panel, a metal pattern layer 20 formed on one surface of the substrate 1 for a touch screen panel, and the A blackening layer 30 ″ is formed on the metal pattern layer 20 , wherein the blackening layer 30 ″ has a plurality of blackening layers 30 in a band shape in the longitudinal direction of the metal pattern layer 20 . '') are spaced apart from each other.

The spacing between the short circuit portions 31 formed between the plurality of blackening layers 30 ″ is irregular.

As described above, the touch screen panel includes, as shown in FIG. 5 , a substrate 1 for a touch screen panel, a metal pattern layer 20 formed on one surface of the substrate 1 for a touch screen panel, and the A blackening layer 30''' formed on the metal pattern layer 20, wherein the blackening layer 30''' has a plurality of blackening layers in a band shape in the width direction of the metal pattern layer 20 (30''') is characterized in that it is formed spaced apart from each other.

The spacing between the short circuit portions 31 formed between the plurality of blackening layers 30 ″″ is irregular.

As shown in FIG. 6 , in the above-described embodiments, the blackening layer 300 ″ may cover the side surface 20a and the upper surface 20b of the metal pattern layer 20 .

In addition, the blackening layers 300 ″ surrounding each metal pattern layer 20 may be formed to be spaced apart from each other.

As described above, although described with reference to preferred embodiments of the present invention, those skilled in the art can variously modify or modify the present invention within the scope without departing from the spirit and scope of the present invention as set forth in the following claims. can be carried out.

** Explanation of symbols for the main parts of the drawing **
1: base material for touch screen panel
20: metal pattern layer
20a: side
20b: upper surface
21: cross section
30, 30', 30'', 30''',300'' : Blackening layer
31: short circuit

Claims (10)

a substrate for a touch screen panel;
a metal pattern layer formed in the form of an electrode circuit on one surface of the substrate for the touch screen panel; and
It is formed on the upper surface of the metal pattern layer, comprising a plurality of blackening layers formed by short circuit with each other,
The plurality of blackening layers are formed in the form of a band in the longitudinal direction of the metal pattern layer and spaced apart from each other in the width direction of the metal pattern layer, or are formed in the form of a band in the width direction of the metal pattern layer in the longitudinal direction of the metal pattern layer. separated from each other,
The upper surface of the metal pattern layer is exposed through a plurality of short-circuiting portions formed between the plurality of blackening layers, and the distance between the plurality of short-circuiting portions is irregular.
delete delete According to claim 1,
The plurality of blackening layers is a touch screen panel, characterized in that formed with the same or similar line width as the metal pattern layer.
According to claim 1,
A touch screen panel, characterized in that the line width of the metal pattern layer is 1.0㎛ or more.
delete delete delete delete The method of claim 1
The plurality of blackening layers is a touch screen panel, characterized in that formed to surround the side and upper surface of the metal pattern layer.

Images