KR101513671B1 - Touch Screen Panel for Preventing ESD and Moire - Google Patents

Abstract

The present invention relates to a touch screen panel for preventing ESD and moire. The touch screen panel forms a static-preventing region that curves and connects the interface of conductive lines to cross regions as to mesh-shaped conductive lines on transparent substrates, and eliminates inducing factors for static caused by mesh structure of conductive lines. By doing so, the present invention prevents static from happening and whole circuits from being damaged and maintains superior quality. By using the design standards based on cross domain and forms on the area of a static-preventing are used to set the area of static-preventing as a special scope. As a result of setting the special scopes based on design, it provides a touch screen panel that is static-free and efficiently prevents moire caused by repetitive patterns of mesh-shaped conductive lines.

Description

[0001] The present invention relates to a touch screen panel for ESD and moire,

The present invention relates to a touch screen panel for preventing static electricity and moiré. More particularly, the present invention relates to an electrostatic discharge prevention device for preventing electrostatic induction caused by a mesh structure of a conductive line from occurring by forming an electrostatic discharge preventing portion that curvedly connects an outer boundary surface of a conductive line to a mutual intersection region of a mesh- And it is possible to prevent static electricity from being generated, thereby preventing the entire circuit from being damaged and maintaining a good quality. In addition, a design standard based on the cross-sectional area and shape of the crossing area of the conductive line formed with the anti- To a touch screen panel for preventing static electricity and moiré which can effectively prevent a moire phenomenon caused by a repeated pattern of a conductive line having a mesh shape by setting the shape of the static electricity prevention part to a specific range.

The touch screen panel is an input device that allows a user to input a command by selecting an instruction displayed on a screen of a video display device as a human hand or an object. Recently, terminals and terminals of various communication devices have been reduced in weight and thickness Such a touch screen panel is widely used so that the display area can be broadened.

The touch screen panel is provided on the front side of the image display device and converts a contact position directly touching a human hand or an object into an electrical signal, so that the instruction content selected at the contact position is received as an input signal. Such a touch screen panel can be replaced with a separate input device connected to a video display device such as a keyboard and a mouse.

In accordance with this tendency, portable electronic devices such as mobile communication terminals, portable media players (PMPs), personal digital assistants (PDAs), navigation devices, and MP3 players, Touch screen panels have also been widely applied.

The touch screen panel is configured such that a sensing electrode is formed on a transparent substrate of a transparent material so as to sense a touch operation. The sensing electrode is formed in a sensing pattern shape for recognizing a touch input signal of a user. Such a sensing pattern is transparently realized in order to secure transparency and visibility of light generated from the display panel and is formed of a transparent electrode material such as indium tin oxide (ITO).

At this time, the transparent electrode material such as ITO for forming the sensing electrode has a problem that the indium used as the raw material is expensive as rare earth metal, and thus the price competitiveness is deteriorated, and the reserves are also insufficient and the supply and demand is not smooth.

In addition, the sensing electrode using the ITO material has a problem that the manufacturing time and cost are increased due to a complicated and difficult working process. In addition, in recent years, a finer and more complex sensing electrode is required according to the tendency of high integration. However, there is a limitation in solving the problem using a transparent electrode material such as ITO.

In order to solve these problems, various researches on transparent electrode method to replace ITO have been carried out. However, research results on a new method applicable to touch screen panel and sensing electrode are still insignificant.

Recently, a metal mesh method has been studied as a means for replacing a transparent electrode such as ITO. In this case, there is a problem that a moire phenomenon occurs due to repetition of the same pattern due to its structure. Particularly, There is a problem that the possibility of generating static electricity in the vicinity of the intersection area is very high due to intersection of the conductive lines, thereby causing damage to the touch screen panel.

Korean Patent No. 10-1447927

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art, and it is an object of the present invention to provide an electrostatic discharge prevention device, which forms an electrostatic discharge prevention part for flexibly connecting an outer boundary surface of a conductive line to a crossing area of a mesh- Thereby providing a touch screen panel for preventing static electricity and moiré that can prevent the static electricity from being generated by the shape of the conductive structure of the conductive line, .

Another object of the present invention is to provide a method of manufacturing a conductive line having a mesh shape by setting a shape of an antistatic portion to a specific range by using design criteria based on an area and shape of a crossing region with respect to an intersecting region of the conductive line formed with the anti- And to provide a touch screen panel for preventing static electricity and moiré that can effectively prevent a moire phenomenon caused by a repeated pattern.

The present invention relates to a transparent substrate, And a sensing electrode formed on the transparent substrate so as to sense a touch operation, wherein the sensing electrode includes a plurality of first conductive lines parallel to each other and a plurality of parallel conductive lines intersecting the first conductive line, The first conductive line and the second conductive line are formed in a mesh structure so that the outer boundary surfaces of the first conductive line and the second conductive line that are adjacent to each other in a crossing area crossing the first conductive line and the second conductive line are formed in a curved shape And an antistatic portion of a connecting shape is formed on the touch panel.

At this time, the outer boundary surface of the antistatic portion may be curved in a convex shape toward the central portion of the mutual intersection region of the first conductive line and the second conductive line.

The outer boundary surface of the static electricity prevention part may be formed such that the outer boundary surfaces of the first conductive line and the second conductive line respectively form tangential lines to the outer boundary surface of the static electricity prevention part.

In addition, the anti-static portion may be formed on the transparent substrate through a nanoimprint process together with the first conductive line and the second conductive line.

The first conductive line and the second conductive line may be formed to have the same line width so that the mutually intersecting regions form a rhombic shape. The antistatic portion may be formed symmetrically with respect to two diagonal lines formed in the rhombic region have.

The shape of the antistatic portion may be such that the first spacing is a mutual spacing distance between the two antistatic portions positioned so as to be longer than the remaining one of the two diagonal lines formed in the rhombus region and crossing the extension line of the same first diagonal line And a second spacing distance that is a mutual spacing distance between two antistatic parts positioned so as to intersect the extended line of the second diagonal line that is the remaining one of the two diagonal lines formed in the rhombus area.

The shape of the static electricity prevention part may be set so that the first distance and the second distance are equal to or less than a preset reference value.

In addition, the reference value may be applied as a critical line width of a conductive line that is not visually recognized through a human eye at a specific separation distance.

In addition, the reference value may be applied to 5 m.

The shape of the antistatic portion may be a virtual extension line extending in a direction perpendicular to the first diagonal line at a point where the first separation distance is larger than a preset reference value and the extension line of the first diagonal line intersects the anti- The distance between the two points at which the outer boundary surfaces of the first and second conductive lines intersect may be set to be equal to or less than the reference value.

According to the present invention, by forming the electrostatic discharge preventing part connecting the outer boundary surface of the conductive line to the crossing area of the mesh-shaped conductive line formed on the transparent substrate, the electrostatic induction factor generated according to the mesh structure of the conductive line So that it is possible to prevent static electricity from being generated, thereby preventing damage to the entire circuit and maintaining excellent quality.

Also, by setting the shape of the antistatic portion to a specific range by using a design standard based on the area and shape of the crossing region with respect to the crossing region of the conductive line formed with the anti-static portion, by the repetitive pattern of the conductive line having the mesh form It is possible to effectively prevent the occurrence of the moire phenomenon.

1 is a view for explaining a schematic structure of a touch screen panel for preventing static electricity and moiré according to an embodiment of the present invention;
FIG. 2 is a view schematically showing the shape of an anti-static unit according to an embodiment of the present invention; FIG.
FIGS. 3 and 4 are views for explaining a moire phenomenon formed by the metal mesh structure of the sensing electrode,
FIGS. 5 and 6 are diagrams for explaining moire prevention design criteria of a moire preventing touch screen panel according to an embodiment of the present invention;
7 is a view for explaining a moiré prevention design standard of a conductive line formed with an anti-static part according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 1 is a view for explaining a schematic structure of a touch screen panel for preventing static electricity and moiré according to an embodiment of the present invention, and FIG. 2 is a view schematically showing the shape of an anti-static part according to an embodiment of the present invention. to be.

The touch screen panel 100 according to an exemplary embodiment of the present invention is formed in a manner that a sensing electrode 120 is formed on a transparent substrate 110 in the form of a transparent film so that a touch operation can be sensed. ) Is formed of a metal mesh structure rather than an ITO material.

The active region AR is formed in the center portion of the transparent substrate 110 as shown in FIG. 1, and the inactive region NAR is formed along the periphery of the active region AR. Here, the active area AR refers to a region of the touch screen panel 30 where the user can touch the touching position using the body contact or the stylus pen. The inactive area NAR refers to a contact position sensed in the active area I.e., the area required to transmit the contact position sensing signal to the control chip.

A sensing electrode 120 is formed on the active region AR of the transparent substrate 110 to sense the user's contact position and a contact position signal sensed through the sensing electrode 120 is controlled on the non- An electrode wiring 130 for transfer to an electronic device such as a chip is formed.

The touch screen panel 100 according to an exemplary embodiment of the present invention may be configured such that the sensing electrode 120 formed in the active region AR of the transparent substrate 110 is not formed of a transparent electrode material such as an ITO material, Metal mesh structure. Also, the electrode wiring 130 formed in the inactive region NAR may be formed in a metal mesh structure in the same manner as the sensing electrode 120.

The sensing electrode 120 may be formed to have a metal mesh structure through a nanoimprint process and the electrode wiring 130 may be formed simultaneously with the sensing electrode 120 through a nanoimprint process.

The sensing electrode 120 may include a plurality of first conductive lines 121 parallel to each other in one direction and a plurality of second conductive lines 121 parallel to each other in a direction intersecting the first conductive lines 121. [ 122 intersect with each other to form a mesh structure.

The sensing electrode 120 thus formed can be patterned with a very fine line width of several nanometers in the nature of the nanoimprint process. When the sensing electrode 120 is formed with a very fine line width of several nanometers, the sensing electrode 120 can be visually distinguished And shows the same degree of transmittance as the transparent electrode material. Accordingly, when the sensing electrode 120 is formed with a mesh pattern having a fine line width, a transparent electrode of a new type replacing a transparent electrode material such as ITO can be formed.

According to such a structure, the touch screen panel 100 according to an exemplary embodiment of the present invention may include a metal mesh sensing electrode 120 through a nanoimprint process without using a separate transparent electrode material such as ITO as a sensing electrode, It is possible to simplify the process, reduce the manufacturing cost, and replace the ITO material which is not smoothly supplied with the material.

However, when the sensing electrode 120 has a mesh structure in which the first conductive line 121 and the second conductive line 122 intersect with each other, the first conductive line 121 and the second conductive line 122 122 are crossed with each other, the possibility of generation of static electricity becomes very high. In particular, since the first conductive line 121 and the second conductive line 122 are formed in an extremely large number, the possibility of generating static electricity in each crossing region is increased, so that the possibility of generating static electricity as a whole increases sharply. Such static electricity may damage the entire circuit of the touch screen panel 100, and thus is a very serious threat to maintaining stable quality.

As shown in FIG. 2 (a), the first conductive line 121 and the second conductive line 122 intersect with each other with a constant line width. Therefore, in the crossing region, The outer boundary surface of the conductive line 121 and the outer boundary surface of the second conductive line 122 intersect with each other in such a manner as to form sharp apexes. That is, the slopes of the respective outer boundary surfaces intersect with each other in a discontinuous state to form a vertex. Such a vertex shape easily induces static electricity in the shape structure.

In the touch screen panel 100 according to an embodiment of the present invention, an anti-static unit 126 is formed to prevent such static electricity. The antistatic portion 126 may be formed of a first conductive line 121 and a second conductive line 122 adjacent to each other in a crossing region where the first conductive line 121 and the second conductive line 122 cross each other, And the second conductive lines 122 are connected to each other in a curved shape.

Since the outline boundary surfaces of the first conductive line 121 and the second conductive line 122 are connected in a curved shape by the anti-static portion 126, the first conductive line 121 and the second conductive line 122 The sharp shape of the vertex is removed in the crossing region of the first and second electrodes, thereby eliminating a shape factor for inducing the static electricity, thereby exhibiting the antistatic effect.

At this time, the outer boundary surface of the antistatic portion 126 may be curved in a convex shape toward the central portion of the mutual intersection region of the first conductive line 121 and the second conductive line 122. The outer boundary surface of the static electricity prevention part 126 may be formed such that the outer boundary surfaces of the first conductive line 121 and the second conductive line 122 are tangential to the outer boundary surface of the anti-static part 126, respectively .

According to this structure, since the discontinuous surface is removed in such a manner that the tilt is continuously changed at the connection point between the first conductive line 121 and the outer boundary surface of the second conductive line 122, It is possible to fully exhibit the antistatic effect.

The first conductive line 121 and the second conductive line 122 are formed to have the same line width and are formed so as to have a rhombic crossing region as shown in FIG. 2 (b) (See FIG. 7) formed on the rhombic region, and the diaphragm 126 may be formed symmetrically with respect to each other. That is, the antistatic portion 126 is formed at four vertex portions generated in the mutual intersection regions of the first conductive line 121 and the second conductive line 122, And may be disposed symmetrically with respect to each other about the diagonal lines.

The anti-static portion 126 may be formed simultaneously with the first conductive line 121 and the second conductive line 122 through the nano-imprint process. Since the nanoimprint process is widely used in the process of forming fine patterns in recent years, a detailed description thereof will be omitted.

If the sensing electrode 120 has a mesh pattern structure, the possibility of generating the above-described static electricity increases. In addition, the problem that the moire phenomenon occurs in the sensing electrode 120 due to repetition of the same pattern have. The moire phenomenon is a natural interference phenomenon that is generally formed when the periodic patterns are repeated, and is observed in the form of a wave-like curve, a ripple, or the like.

When the touch screen panel is used in combination with a separate image display device, such a moire phenomenon may degrade the image quality of the image generated from the image display device. Therefore, the moire phenomenon caused by the touch screen panel may be minimized or prevented .

That is, since the line widths of the first conductive line 121 and the second conductive line 122 forming the mesh structure are very thin in nano units, the lines 121 and 122 themselves are not visually recognized. However, The moiré phenomenon due to the repetition of the pattern can be caused by a phenomenon of light interference independently of the visibility problem of the lines 121 and 122 themselves.

In recent years, various attempts have been made to prevent such a moiré phenomenon. These studies are generally conducted in a way to prevent the moire phenomenon by adjusting the line width and pitch of the conductive lines or adjusting the crossing angle. In other words, it is limited to experimental research that finds optimum layout condition experimentally by simply changing line width or crossing angle of conductive line. In this experimental research method, only the moiré prevention result is obtained only for a specific condition, The result is also not always correct.

The present invention provides a design basis for preventing the moire phenomenon from occurring. The moire preventing function will be described below with reference to FIGS. 3 to 7. FIG.

FIGS. 3 and 4 are views for explaining a moiré phenomenon formed by the metal mesh structure of the sensing electrode. FIG. 5 and FIG. 6 are cross-sectional views illustrating a Moiré prevention of a moire preventing touch screen panel according to an embodiment of the present invention. Fig.

As shown in FIGS. 3 and 4, when the first conductive line 121 and the second conductive line 122 intersect with each other at the same line width to form a mesh structure, the moire phenomenon occurs when the dark and stepped portions are alternately periodically repeated Even if the line width or the crossing angle of the first conductive line 121 and the second conductive line 122 is changed, it is always displayed in most cases.

That is, when the first conductive line 121 and the second conductive line 122 having the same line width intersect with each other as shown in FIGS. 3A and 3B, the dark region and the bright region Z1 and Z2, Moire phenomenon occurs repeatedly in this alternating form. This is because even if the crossing angles of the first conductive line 121 and the second conductive line 122 are different, for example, 20 ° or 45 ° is formed The shape of the dark and bright areas Z1 and Z2 is different, and the pattern is similarly displayed. Even when the line widths of the first conductive line 121 and the second conductive line 122 are changed as shown in Figs. 4A and 4B, similarly, in the dark region and the bright regions Z1 and Z2, And the pattern is alternately repeated, and the moire phenomenon occurs.

When the plurality of conductive lines intersect with each other in the mesh structure, the moire phenomenon appears as a repetitive form of the dark and bright regions (Z1, Z2). In this case, the area of the imprinted conductive line in the actual dark region is larger than the bright region .

That is, the moire phenomenon due to the intersection of the plurality of conductive lines appears as a repetitive form of the dark and bright regions Z1 and Z2 because the ratio of the area where the conductive lines are formed in the specific region on the arrangement structure of the plurality of conductive lines Since the conductive line appears relatively high in the specific region, the specific region appears relatively dark and the remaining region appears relatively bright, and moire phenomenon occurs in a form in which they are repeated.

Accordingly, the touch screen panel for preventing moire according to the present invention is a design standard for preventing the moire phenomenon. Unlike the conventional method in which only the line width or the intersection angle of the conductive line is limited, the intersection area To provide a design standard that can prevent the moire phenomenon.

The plurality of conductive lines 121 and 122 each form a plurality of intersecting areas. Since the overall moire phenomenon occurs according to the area characteristics of the intersecting areas, the overall moire phenomenon is generated through the design criteria for each intersecting area. .

Figs. 5 and 6 show views for explaining these design criteria.

First, the first conductive line 121 and the second conductive line 122 according to an embodiment of the present invention are formed so as to have the same line width as shown in FIG. 5 and arranged so as to intersect with each other, the crossing region always has the shape of a diamond 123.

Two diametrically opposed diagonal lines X and Y exist in the region of the diamond 123 which is a crossing region. The diagonal lines X and Y are relatively longer than the remaining one, or the same diagonal line is referred to as a first diagonal line X, Is referred to as a second diagonal line (Y). An imaginary extension line Y1 extending from the both ends of the first diagonal line X in the direction perpendicular to the first diagonal line X and an outer boundary surface between the first conductive line 121 and the second conductive line 122 Let B be the distance between the two intersecting points (B1, B2). Similarly, an imaginary extension line X1 extending in the direction perpendicular to the second diagonal line Y at both ends of the second diagonal line Y having a short length and a virtual extension line X1 extending in the direction of the first conductive line 121 and the second conductive line 122 Let C be the distance between two points (C1, C2) where the outer boundary surfaces intersect. At this time, the intersection angle? Between the first conductive line 121 and the second conductive line 122 can be expressed by two angles? And? 180? Angle, and the intersection angle is indicated by?.

At this time, when setting the line width W and the intersection angle? Of the first conductive line 121 and the second conductive line 122, the touch screen panel 100 considers the length of the first diagonal line X The moire phenomenon can be prevented.

More specifically, the first conductive line 121 and the second conductive line 122 are formed to have the same line width, and the line width W of the first conductive line 121 and the second conductive line 122, The intersection angle? Is set such that the length of the first diagonal line X is equal to or less than a preset reference value, thereby preventing the moire phenomenon.

On the other hand, the line width W and the intersection angle? Of the first conductive line 121 and the second conductive line 122 are set such that the length of the first diagonal line X is larger than a preset reference value, Two imaginary extension lines Y1 extending in the direction perpendicular to the first diagonal line X from both ends of the first conductive line 121 and the second conductive line 122 intersect each other, And the distance B between the points B1 and B2 is equal to or smaller than the reference value.

The dark and bright regions Z1 and Z2 shown in FIGS. 3 and 4 are formed in a crossing region of the first conductive line 121 and the second conductive line 122 and a unit cell region U ). If the conductive lines 121 and 122 are formed on the basis of the degree that the conductive lines 121 and 122 are not visible in the unit cell region U, dark and bright region differences do not occur as a whole, and thus the moire phenomenon does not occur .

That is, since the area of the conductive line including the rhombic area 123, which is a crossing area, relatively increases in the unit cell area U, the possibility that the conductive line is visually recognized through the naked eye of the user is high in this area, The moiré phenomenon can be generated. Therefore, it is preferable that the conductive line is not visually recognized in the unit cell region U including the intersecting region, so that dark and bright region differences do not occur as a whole, thereby preventing the occurrence of moire.

In order to set the line width W and the intersection angle? Of the first conductive line 121 and the second conductive line 122 so that the conductive line is not visible in the unit cell region U, the first diagonal line X And a distance B between an imaginary extension line Y1 perpendicular to the first conductive line 121 and the outer boundary surface of the first conductive line 121 and the second conductive line 121 is set to a preset reference value or less.

In this case, the reference value may vary depending on the use of the touch screen panel. In general, considering the utilization of the touch screen panel 100, the position of the user's eyes is positioned at a distance of about 20 to 30 cm from the touch screen panel. The threshold line width at which the conductive line is not visible at the separation distance can be set as the reference value.

Experiments to obtain these reference values have shown that many people can only see visibility if the line width of the conductive line is less than 5 μm at a distance of about 20 cm from the touch screen panel, I could. The results of these experiments can be found in, for example, Korean Patent Laid-Open No. 10-2013-33993. That is, the critical line width of the conductive lines viewed by the user may be, for example, 5 占 퐉 based on a 20 cm separation distance.

Therefore, in order for the conductive line to be visible in the unit cell region U described above, the length of the conductive line must be at least 5 μm and the line width must be at least 5 μm or more. Of course, here, 5 μm is a reference value based on a separation distance of 20 cm. In this case, when the first diagonal line X is in the longitudinal direction, the line width may be B. The length of the first diagonal line X is, for example, 5 μm or more, The line width B at both ends of the first diagonal line X is equal to or larger than the reference value. Therefore, in an embodiment of the present invention, when the length of the first diagonal line X is equal to or larger than the reference value, the length of the line width B at the both ends of the first diagonal line X becomes equal to or smaller than the reference value, And the line width W and the intersection angle of the second conductive line 122 are set.

6, when the first conductive line 121 and the second conductive line 122 have the same line width W and intersect at an angle of? Intersection, the length of the first diagonal line X And the line width B at both ends of the first diagonal line X are expressed by the following equations.

<Formula>

B = 2W / cos (? / 2)

X = B / (2 * tan (? / 2))

The first diagonal line X and the maximum line width B at both ends of the first diagonal line X and the second diagonal line B according to this formula all have an angle of intersection with the line width W of the first conductive line 121 and the second conductive line 122 The line width W of the first conductive line 121 and the intersection angle? Of the second conductive line 122 can be represented by the first diagonal line X and the maximum line width at both ends thereof (B) as a variable.

For example, when the line width W of the first conductive line 121 and the second conductive line 122 is determined to be a specific value, for example, the line width W is determined to be 1.5 占 퐉 , The crossing angle? Can be set to a range in which the maximum line width B at both ends of the first diagonal line X is 5 占 퐉 or less. Similarly, in a state where the intersection angle [theta] of the first conductive line 121 and the second conductive line 122 is determined at a specific angle, for example, in a state where the angle is determined to be 70 degrees, W can be set to a range in which the maximum line width B at both ends of the first diagonal line X is 5 占 퐉 or less.

In this way, Applicants have made various samples so that various line widths are formed with respect to the maximum line width (B) at both ends of the first diagonal line (X) to test whether the moire phenomenon is visually observed. As a result, Moire phenomenon was found when B was above the reference value of 5 mu m or more, and moire phenomenon was not recognized when it was below the reference value of 5 mu m or more.

On the other hand, it is not necessary to consider whether or not the length of the first diagonal line X is larger than the reference value. That is, when the length of the first diagonal line X is larger than the reference value, the maximum line width B at both ends of the first diagonal line X is set to be equal to or less than the reference value, Is less than the reference value, it is not necessary to satisfy such a criterion and the user is not recognized. Therefore, the criterion need not be considered.

According to this principle, the line width W and the intersection angle? Of the first conductive line 121 and the second conductive line 122 are set such that the length of the first diagonal line X is merely equal to or smaller than the reference value Can be set. If the length of the first diagonal line X is equal to or smaller than the reference value, even if the maximum line width B at both ends of the first diagonal line X is greater than the reference value, the first diagonal line X can not be visually recognized. can do.

At this time, if the length of the first diagonal line X is less than or equal to the reference value, the length of the second diagonal line Y is shorter than or equal to the reference value, of course, is less than the reference value.

Likewise, if the length of the maximum line width B at both ends of the first diagonal line X is equal to or smaller than the reference value, the length of the second diagonal line Y shorter in length than the second diagonal line Y is also smaller than the reference value. In particular, if the length of the second diagonal line Y is less than the reference value, even if the maximum line width C at both ends of the second diagonal line Y becomes equal to or larger than the reference value, Consideration of this is unnecessary.

In summary, the line width W and crossing angle? Of the first conductive line 121 and the second conductive line 122 can be set such that the length of the first diagonal line X is less than or equal to the reference value, The maximum line width B at both ends of the first diagonal line X may be set to be equal to or less than the reference value when the length of the first diagonal line X is to be set larger than the reference value.

According to this structure, the moire phenomenon according to the repetitive pattern of the first conductive line 121 and the second conductive line 122 does not occur in the touch screen panel 100.

The Moire prevention design standard for the touch screen panel 100 has been described above. This explains the structure in which the static electricity prevention part 126 is not formed on the conductive lines 121 and 122, . Hereinafter, the case where the static electricity prevention part 126 is formed on the conductive lines 121 and 122 according to an embodiment of the present invention will be described with reference to FIG.

7 is a view for explaining a moiré prevention design standard of a conductive line formed with an anti-static part according to an embodiment of the present invention.

As described above, the sensing electrode 120 is formed on the transparent electrode 110 and the sensing electrode 120 is electrically connected to the first conductive line 121 and the second conductive line 121. In this case, And the second conductive lines 122 are formed to form a mesh structure in a crossing manner.

At this time, the first conductive line 121 and the second conductive line 122 are formed with the antistatic portion 126 in the intersecting region intersecting with each other as described above. The anti-static portion 126 is formed at each of the four vertexes of the crossing region so as to connect the outer boundary surfaces of the first conductive line 121 and the second conductive line 122 in a curved shape.

The antistatic portion 126 is formed on the outside of the rhombic region 123, which is a mutual intersection region of the first and second conductive lines 121 and 122, so that the first and second conductive lines 121 and 122, Resulting in a substantial extension of the mutual intersection area of the first and second ends 121, 122.

Therefore, it is preferable to further consider the shape of the anti-static portion 126 with respect to the anti-Moire design standard described with reference to Figs.

5 and 6, the length of the first diagonal line X is longer than or equal to the length of the two diagonal lines of the rhombic area 123, which is a crossing area of the first and second conductive lines 121 and 122, The line width and the intersection angle of the second conductive lines 121 and 122 are set. However, when the static electricity prevention part 126 is formed, the intersection area is substantially expanded. Therefore, as shown in FIG. 7, ) Should be set so as to prevent the moire phenomenon in consideration thereof.

That is, the shape of the antistatic portion 126 is formed so as to have a length longer than the remaining one of the two diagonal lines X and Y formed in the rhombic area 123, or intersect with the extended line of the same first diagonal line X, A first spacing distance S1 that is a mutual spacing distance to two antistatic portions 126 positioned so as to intersect at a point in the rhombic region 123 and a second spacing distance S1 that is the other one of the two diagonal lines X and Y formed in the region of the rhombus 123 Can be set in consideration of the second separation distance S2, which is the mutual separation distance with respect to the two antistatic parts 126 positioned so as to intersect with the extension line of the second diagonal line Y (intersect at the points Q1 and Q2).

More specifically, the shape of the antistatic portion 126 can be set such that the first spacing distance S1 and the second spacing distance S2 are both equal to or less than a predetermined reference value (for example, 5 占 퐉) , Thereby reducing the visibility of the conductive lines 121 and 122 and the anti-static portion 126 in the unit cell region as described above, so that dark and bright region differences do not occur and moire phenomenon is prevented.

The reason for satisfying the condition that the distance from the first distance S1 to the second distance S2 is equal to or less than the reference value is that the distance between the first distance S1 and the second distance S2, , The second spacing distance S2 may be equal to or larger than the reference value even if the first spacing distance S1 is less than or equal to the reference value depending on the curvature shape.

On the other hand, the shape of the antistatic portion 126 is formed such that the first spacing distance S1 is larger than a predetermined reference value and the points P1 and P2 where the extension line of the first diagonal line X intersects the antistatic portion 126, The distance between the imaginary extension line Y1 extending in the direction perpendicular to the first diagonal line X and the two points B1 and B2 at which the outer boundary surfaces of the first and second conductive lines 121 and 122 intersect is not more than the reference value . &Lt; / RTI &gt;

5 and 6, the same principle as described above for preventing the moire phenomenon is applied when the length of the first diagonal line X is larger than the reference value and the length of B is set to be less than the reference value, The intersection area is substantially extended by the unit 126, and thus the detailed description thereof will be omitted.

The foregoing description is merely illustrative of the technical idea of the present invention and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas falling within the scope of the same shall be construed as falling within the scope of the present invention.

100: touch screen panel 110: transparent substrate
120: sensing electrode 121: first conductive line
122: second conductive line 123: rhombus
126: Antistatic member 130: Electrode wiring
X: first diagonal line Y: second diagonal line
S1: first separation distance S2: second separation distance

Claims (10)

delete A transparent substrate; And
A sensing electrode formed on the transparent substrate so as to sense a touch operation,
, The sensing electrode
A plurality of first conductive lines parallel to each other and a plurality of second conductive lines parallel to each other in a direction intersecting the first conductive lines cross each other to form a mesh structure,
Wherein the first conductive line and the second conductive line are formed with an antistatic portion having a shape connecting the outer boundary surfaces of the first conductive line and the second conductive line, which are adjacent to each other in a crossing area crossing each other,
Wherein an outer boundary surface of the anti-static portion is formed to be curved in a convex shape toward a mutual intersection center portion of the first conductive line and the second conductive line.
3. The method of claim 2,
Wherein an outer boundary surface of the static electricity prevention portion is formed such that the outer boundary surfaces of the first conductive line and the second conductive line respectively form a tangent line to the outer boundary surface of the static electricity prevention portion.
3. The method of claim 2,
Wherein the electrostatic discharge prevention part is formed on the transparent substrate through a nanoimprint process together with the first conductive line and the second conductive line.
3. The method of claim 2,
The first conductive line and the second conductive line are formed to have the same line width so that the crossing regions form a rhombic shape,
Wherein the static electricity prevention part is formed to be symmetrical with respect to each other about two diagonal lines formed in the rhombic area.
6. The method of claim 5,
The shape of the anti-
The first distance being a mutual spacing distance between two antistatic parts positioned so as to be longer than the remaining one of the two diagonal lines formed in the rhombic area or crossing the same extended line of the same diagonal line, Wherein the first and second diagonal lines are set in consideration of a second spacing distance between the two antistatic parts positioned so as to intersect the extension line of the second diagonal line of the other one of the two diagonal lines.
The method according to claim 6,
The shape of the anti-
Wherein the first distance and the second distance are set to be equal to or less than preset reference values.
8. The method of claim 7,
Wherein the reference value is applied as a critical line width of a conductive line not visible through a human eye at a specific separation distance.
9. The method of claim 8,
Wherein the reference value is 5 占 퐉.
The method according to claim 6,
The shape of the anti-
Wherein the first distance is greater than a preset reference value and a virtual extension line extending in a direction perpendicular to the first diagonal line at a point where the extension line of the first diagonal line intersects the anti- Wherein a distance between two points at which the outer boundary surfaces intersect is set to be equal to or less than the reference value.

Images