KR101553963B1 - Touch screen apparatus of mutual capacitance type of one layer structure - Google Patents

Abstract

The present invention relates to a mutual capacitance type touchscreen device having a single layer structure. More specifically, the mutual capacitance type touchscreen device includes a substrate, and an electrode pattern which is formed as a single layer on a surface of the substrate, and has a first electrode pattern and a second electrode pattern arranged to have a predetermined gap therebetween. The first electrode pattern is formed as first pattern modules, including a first pattern in the shape of a figure whose width becomes narrower from one side thereof toward the other side about one axis, and a second pattern in the shape of a figure which is spaced a certain distance apart from the first pattern and symmetrical in a diagonal direction, are repeatedly arranged at regular intervals about the other axis perpendicular to the one axis. The second electrode pattern is formed as second pattern modules, including connection patterns placed at regular intervals on one side of the first electrode pattern and having one end thereof connected to a wiring, and extension patterns extended from one side of the connection pattern and placed on a gap between the first pattern and the second pattern of the first pattern module, are repeatedly arranged at regular intervals about the one axis.

Description

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

[0001] The present invention relates to a mutual capacitance type touch screen device having a single layer structure, and more particularly, to a mutual capacitance type touch screen device having a single electrode pattern having a first electrode pattern and a second electrode pattern, Wherein the first electrode pattern includes a first pattern having a figure shape whose width decreases from one side to the other with reference to one axis and a figure pattern located at a certain distance from the first pattern and being diagonally symmetrical with respect to the first pattern, The first electrode pattern is formed by repeatedly arranging the first pattern module including the second pattern at regular intervals in the vertical direction with respect to the other axis orthogonal to the first axis. A connection pattern in which an end is connected to the wiring and a connection pattern extending from one side of the connection pattern and being located in a space between the first pattern and the second pattern of the first pattern module Is a cross-sectional capacitive touch screen device having a single-layer structure in which second pattern modules including extension patterns are repeatedly arranged at regular intervals with reference to one axis.

As a mobile device such as a smart phone develops, a touch screen (touch panel) capable of directly inputting information in a liquid crystal state is in the spotlight in a method of inputting information by pressing a physical button. The touch panel is installed on the surface of a flat panel display device such as an LCD and an image display device such as a CRT so that a user can perform a desired operation through a touch while viewing the screen. The types of touch panels include a resistive type, a capacitive type, an electric magnetic field type, a noise type, and an infra red type. In the case of the capacitive type, durability is excellent and multi touch is available. The above-mentioned volumetric capacitive method is a self-capacitance method in which a plurality of electrode patterns are formed on a substrate and electrode wirings are connected to each electrode pattern to measure a change in capacitance, and two types of electrode patterns And a mutual capacitance method in which coordinates are calculated by measuring a change in capacitance formed between the two electrode patterns.

<Patent Literature>

U.S. Patent No. 5,648,642 (registered on July 15, 1997) "OBJECT POSITION DETECTOR"

However, since the conventional mutual capacitance type touch panel as described in the above patent documents forms the electrode pattern in the upper and lower layers, the electrode pattern arranged in the vertical direction is not electrically connected, There is a problem that the cost is increased. Accordingly, there has been developed a touch panel in which a single-layer mutual capacitance type electrode pattern is formed. However, there is a problem that a touch panel that has a single layer mutual capacitance type electrode pattern is developed, There is a problem that the process yield is lowered and the size of the FPCB is increased.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems,

It is an object of the present invention to provide a mutual capacitive touch screen device having a single layer structure which can realize a mutual capacitance method of a single layer structure with a simple electrode pattern, thereby achieving economical efficiency.

Another object of the present invention is to provide a mutual capacitive touch screen device having a single-layer structure in which a branch pattern of a second electrode pattern is located in an embedded portion of a first electrode pattern, .

It is another object of the present invention to provide a mutual capacitive touch screen device of a single layer structure capable of reducing the volume of a device by reducing the number of wiring lines.

It is another object of the present invention to provide a mutual capacitive touch screen device having a single-layer structure capable of reducing noise caused by an LCD due to reduction in area of a second electrode pattern (sensing line).

In order to achieve the above object, the present invention is implemented by the following embodiments.

According to an embodiment of the present invention, a monolayer reciprocal capacitance type touch screen apparatus according to the present invention comprises: a substrate; A first electrode pattern having a first electrode pattern and a second electrode pattern formed as a single layer on one surface of a substrate and having a predetermined interval, the first electrode pattern having a width Wherein the first pattern module includes a first pattern having a shape of a figure that is decreasing and a second pattern having a figure shape that is located at a certain distance from the first pattern and is symmetric with respect to the diagonal direction, The second electrode pattern being disposed at a predetermined distance on one side of the first electrode pattern and having a terminal connected to the wiring, and a connection pattern extending from one side of the connection pattern, The second pattern module including the extension pattern located in the space between the first pattern and the second pattern of the first pattern module is repeatedly arranged at regular intervals with reference to one axis, And that is characterized.

According to another embodiment of the present invention, in the mutual capacitive touch screen device of the single-layer structure according to the present invention, each of the first pattern and the second pattern is embedded in the vertical direction at a predetermined interval in the uniaxial direction Wherein the second pattern module includes a plurality of branch patterns extending upwardly and downwardly at regular intervals with reference to one axis in the extension pattern and located in the respective depressions of the first and second patterns, Further comprising:

According to another embodiment of the present invention, in the mutual capacitive touch screen device having a single-layer structure according to the present invention, a plurality of extension patterns may be formed in one connection pattern at regular intervals in the vertical direction, Is located in a space between the first pattern and the second pattern of each first pattern module.

According to another embodiment of the present invention, in the mutual capacitive touch screen device having a single-layer structure according to the present invention, the extension pattern of the second pattern module decreases as the first electrode pattern is separated from the first electrode pattern, And the second pattern is positioned between the first pattern and the second pattern of the first pattern module located on the lower side with respect to the other axis orthogonal to the first axis.

According to another embodiment of the present invention, there is provided a mutual capacitive touch screen device having a single-layer structure, comprising: a substrate; A first electrode pattern of a first row and a first electrode pattern of a second row having a shape symmetrical with respect to a first electrode pattern of the first row at a predetermined interval with reference to one axis with respect to a first axis, And a second electrode pattern of a first row and a second electrode pattern of a second row which are located between the first electrode patterns of the second row and are symmetrical with respect to one axis with a predetermined interval on the basis of one axis, Wherein the first electrode pattern of the first column is the first electrode pattern of any one of claims 1 to 4 and the second electrode pattern of the first column is any one of the electrodes of any one of claims 1 to 4 Is a second electrode pattern in the present invention.

According to another embodiment of the present invention, there is provided a mutual capacitive touch screen device having a single-layer structure, comprising: a substrate; A first electrode pattern having a first electrode pattern and a second electrode pattern formed as a single layer on one surface of a substrate and having a predetermined interval, the first electrode pattern having a width A first electrode having a shape of decreasing shape and a second electrode having a shape of a figure whose width decreases from one side to the other side with reference to one axis, a second electrode is positioned below the first electrode, And a first pattern module having a second pattern partially overlapping the second electrode and a second pattern having a shape symmetrical with respect to a diagonal direction and spaced apart from the first pattern by a predetermined distance, And the second electrode pattern is disposed at a predetermined interval on one side of the first electrode pattern and the terminal is connected to the wiring, And a second pattern module extending from one side of the connection pattern and including an extension pattern located in a space between the first pattern and the second pattern of the first pattern module, Is formed.

According to another embodiment of the present invention, in the mutual capacitive touch screen device of the single-layer structure according to the present invention, each of the oblique sides of the first pattern and the second pattern is provided with And the second pattern module includes a plurality of concave portions that are vertically extended from the extending pattern with a predetermined interval in a direction of the one axis and are located in each of the concave portions of the first pattern and the second pattern, And further includes a plurality of branch patterns.

According to another embodiment of the present invention, in the mutual capacitive touch screen device having a single-layer structure according to the present invention, the extended pattern extends obliquely from the connection pattern to form a first electrode of a first pattern, And a second electrode that extends between the first electrode of the first pattern and the first electrode of the first pattern and extends in a horizontal form at the end of the first electrode pattern, And a third extension pattern extending between the second electrode of the first pattern and the second electrode of the second pattern by being bent at an end of the second extension pattern and extending obliquely.

According to another embodiment of the present invention, in the mutual capacitive touch screen device having a single-layer structure according to the present invention, a plurality of extension patterns may be formed in one connection pattern at regular intervals in the vertical direction, The first pattern module is located in a space between the first pattern and the second pattern, and as the first pattern module is separated from the first electrode pattern with respect to the first axis, the extension pattern of the second pattern module becomes non- And the second pattern is located between the first pattern and the second pattern of the first pattern module located on the lower side with respect to the axis.

According to another embodiment of the present invention, there is provided a mutual capacitive touch screen device having a single-layer structure according to the present invention, comprising: a substrate; A first electrode pattern of a first row and a first electrode pattern of a second row having a shape symmetrical with respect to a first electrode pattern of the first row at a predetermined interval with reference to one axis with respect to a first axis, And a second electrode pattern of a first row and a second electrode pattern of a second row which are located between the first electrode patterns of the second row and are symmetrical with respect to one axis with a predetermined interval on the basis of one axis, Wherein the first electrode pattern of the first row is the first electrode pattern of any one of claims 6 to 9 and the second electrode pattern of the first column is any one of the electrodes of any one of claims 6 to 9 Is a second electrode pattern in the present invention.

According to another embodiment of the present invention, the mutual capacitive touch screen device of the single-layer structure according to the present invention is connected to the other end of the wiring to apply a voltage to the electrode pattern and change the amount of charge transferred from the electrode pattern And the controller calculates a coordinate of the touch point. When the controller sequentially applies a voltage to each of the first pattern and the second pattern of the first electrode pattern at predetermined time intervals, Each of the second pattern modules outputs a charge charged in the mutual capacitance and sends the output charge to the controller.

According to another embodiment of the present invention, the mutual capacitive touch screen device of the single-layer structure according to the present invention is connected to the other end of the wiring to apply a voltage to the electrode pattern and change the amount of charge transferred from the electrode pattern And the controller calculates a coordinate of the touch point. When the controller sequentially applies a voltage to each of the first pattern and the second pattern of the first electrode pattern at predetermined time intervals, Each of the first pattern patterns of the first column and the second pattern module of the second column is connected to the first electrode pattern of the first column and the first electrode pattern of the second column, And each of the pattern and the second pattern is impressed with a voltage at the same moment.

The present invention can obtain the following effects by the above-described embodiment, the constitution described below, the combination, and the use relationship.

The present invention can realize a mutual capacitance method of a single layer structure by a simple electrode pattern, thereby achieving economical efficiency.

Further, according to the present invention, the branch pattern of the second electrode pattern is located in the embedded portion of the first electrode pattern, and the change of the charge amount can be precisely measured.

Further, the present invention has the effect of reducing the volume of the apparatus by reducing the number of wiring lines.

In addition, the present invention has the effect of reducing the noise caused by the LCD due to the reduction of the area of the second electrode pattern (sensing line).

1 is a plan view of a touch screen device according to an embodiment of the present invention;
FIG. 2 is a reference diagram showing the first electrode pattern of FIG. 1; FIG.
3 is a reference diagram showing the second electrode pattern of Fig.
4 is a plan view of a touch screen device according to another embodiment of the present invention;
FIG. 5 is a reference diagram showing the first electrode pattern of FIG. 4;
6 is a reference diagram showing the second electrode pattern of Fig.
7 is a plan view of a touch screen device according to another embodiment of the present invention.
8 is a reference diagram showing the first electrode pattern of FIG. 7;
Fig. 9 is a reference diagram showing the second electrode pattern of Fig. 7; Fig.
10 is a plan view of a touch screen device according to another embodiment of the present invention.
11 is a reference diagram showing the first electrode pattern of Fig.
12 is a reference view showing the second electrode pattern of FIG. 10;
FIG. 13 is a reference diagram for explaining how touch point coordinates are obtained using the touch screen device of FIG. 1;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a mutual capacitive touch screen device having a single-layer structure according to the present invention will be described in detail with reference to the accompanying drawings. It is to be noted that the same elements among the drawings are denoted by the same reference numerals whenever possible. Unless defined otherwise, all terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs and, if conflict with the meaning of the terms used herein, It follows the definition used in the specification. Throughout the specification, when an element is referred to as "including " an element, it is understood that the element may include other elements as well, without departing from the other elements unless specifically stated otherwise.

FIG. 1 is a plan view of a touch screen device according to an embodiment of the present invention. FIG. 2 is a reference view showing a first electrode pattern of FIG. 1, FIG. 3 is a reference view of a second electrode pattern of FIG. FIG. 4 is a plan view of a touch screen device according to another embodiment of the present invention, FIG. 5 is a reference view showing the first electrode pattern of FIG. 4, and FIG. 6 is a cross- 7 is a plan view of a touch screen device according to another embodiment of the present invention, FIG. 8 is a reference view showing a first electrode pattern of FIG. 7, FIG. 9 is a cross- 10 is a plan view of a touch screen device according to another embodiment of the present invention, FIG. 11 is a reference view showing a first electrode pattern of FIG. 10, FIG. 12 is a cross- 2 is a reference diagram showing a two-electrode pattern, and Fig. 13 is a diagram illustrating a method of obtaining coordinates of a touch point using the touch screen device of Fig. Fig.

1 to 3, the touch screen apparatus includes a substrate 1 for forming an outer surface of the apparatus, (3) having one end connected to the electrode pattern (2) and the other end connected to a controller, and an electrode pattern (2) formed on one surface of the wiring And a controller (not shown) connected to the other end to calculate a coordinate of the touch point by applying a voltage to the electrode pattern 2 and calculating a change in the amount of charge transferred from the electrode pattern 2.

The substrate 1 forms an outer surface of the touch screen device, and the electrode pattern 2 is formed on one surface of the touch screen device. Since the touch screen device is installed on the upper surface of the display device, the touch screen device is made of a transparent and insulating material so as not to block the display device. For example, a transparent plastic sheet or a glass sheet can be used.

The electrode pattern 2 is formed as a single layer on one surface of the substrate 1 and includes a first electrode pattern 21 and a second electrode pattern 23 located at regular intervals, When a voltage is applied to the first electrode pattern 21, electric charges charged in the mutual capacitance formed between the first electrode pattern 21 and the second electrode pattern 23 are transferred through the second electrode pattern 23, . The electrode pattern 2 is formed using a material such as ITO and a manufacturing method such as an inkjet printing method, which form an electrode pattern used in a conventional touch screen device.

The first electrode pattern 21 has a first pattern 221 in the form of a triangle having a width decreasing from one side to the other with reference to one axis (X axis) The first pattern modules 22 having a rectangular shape as a whole and made of a second pattern 222 having a shape of a triangle (a first pattern 221 and a right and left symmetrical with respect to a diagonal direction) (Y-axis) orthogonal to the one axis with respect to the other axis. Each of the first pattern 221 and the second pattern 222 includes a plurality of depressions 221a and 222a embedded in the vertical direction at regular intervals in the X axis direction. The recesses 221a and 222a between the first pattern 221 and the second pattern 222 are nonconductive. Each of the first pattern 221 and the second pattern 222 is connected to the controller by a separate wiring 3.

The second electrode pattern 23 has a connection pattern 241 at one end of the first electrode pattern 21 at a predetermined interval and a terminal end connected to the wiring 3, An extension pattern 242 extending in a diagonal line in the extension pattern 242 and located in a space between the first pattern 221 and the second pattern 222 of the first pattern module 22, And a plurality of branch patterns 243 extending upward and downward at predetermined intervals based on the first pattern module 221 and the second pattern module 222, 24 are repeatedly arranged at regular intervals with respect to the X axis. As the second pattern module 24 is separated from the first electrode pattern 21 with respect to the X axis so as not to overlap with each other, the extension pattern 242 of the second pattern module 24 is positioned on the lower side with respect to the Y axis The first pattern 221 is located between the first pattern 221 and the second pattern 222 of the first pattern module 22. A plurality of extension patterns 242 may be formed at a predetermined interval in the vertical direction of the connection pattern 241. Each extension pattern 242 may be formed in the first pattern 221 of each first pattern module 22 And the second pattern 222. In this case, Each of the connection patterns 241 of the second pattern module 24 is connected to the controller by a separate wiring 3. The number of the second pattern modules 24 has a value obtained by dividing the number of the first pattern modules 22 by the number of the extension patterns 242 formed in one second pattern module 24. 1 to 3, when the number of the first pattern modules 22 is nine and the number of the extension patterns 242 formed on one second pattern module 24 is three, the three second pattern modules 24, . The electrode pattern can precisely measure a change in the amount of charge that the first electrode pattern includes and the branch pattern of the second electrode pattern is located at the recess and is output to the second electrode pattern (sensing line). The electrode pattern has a shape in which a plurality of extension patterns are coupled to one connection pattern, that is, a size of the second pattern module acting as a sensing line can be reduced. Thus, a display device ) Can be reduced.

The electrode pattern 4 according to another embodiment of the present invention will be described with reference to FIGS. 4 to 6. The electrode pattern 4 includes a first electrode pattern 41 of a first row, The first electrode pattern 41 'of the second row and the first electrode pattern 41' of the second row having a shape symmetrical to the first electrode pattern 41 of the first row and the first electrode pattern 41 ' And a second electrode pattern 43 'in the first row and a second electrode pattern 43' in the second row, which are located between the patterns 41 'and symmetrical with respect to the X axis at a predetermined interval. Since the first electrode pattern 41 in the first column and the second electrode pattern 43 in the first column are the same as the first electrode pattern 21 and the second electrode pattern 23 described with reference to FIGS. A description thereof will be omitted. The electrode pattern has a shape in which the first electrode pattern and the second electrode pattern are symmetrical to each other, so that the accuracy of X-axis coordinate measurement can be enhanced compared to the electrode pattern described with reference to FIGS. When the coordinates of the touch point in the touch screen device are obtained, the controller applies a predetermined time interval (hereinafter referred to as &quot; first touch pattern &quot;) to each of the first patterns 421 and 421 'and the second patterns 422 and 422' of the first electrode patterns 41 and 41 ' The first pattern 421 and the second pattern 421 'which are symmetrical with each other at the same position on the first electrode pattern 41' of the first column and the first electrode pattern 41 'of the second column, And each of the second pattern 422 and 422 'is applied a voltage at the same moment), and each of the second pattern modules 44 and 44' of the second electrode pattern 43 and 43 ' And the output electric charge is sent to the controller.

7 to 9, the electrode pattern 5 is formed as a single layer on one side of the substrate 1, and the electrode pattern 5 is formed at a predetermined position A first electrode pattern 51 and a second electrode pattern 53 are formed on the first electrode pattern 51 and the second electrode pattern 51. When a voltage is applied to the first electrode pattern 51 by the controller, 52 are filled with electric charges, and the charged electric charge is transmitted to the controller through the second electrode pattern 52. [

The first electrode pattern 51 includes a first electrode 5211 having a triangle shape whose width decreases from one side to the other with respect to the X axis and a second electrode 5211 having a triangle shape having a width decreasing from one side to the other side with respect to the X axis, A second electrode 5212 including an electrode 5212 and disposed below the first electrode 5211 and partially overlapping the lower side of the first electrode 5211 and the upper side of the second electrode 5212; 1 pattern 521 and a second pattern 522 which is located at a predetermined distance from the first pattern 521 and has a shape symmetrical in the diagonal direction (symmetrical with the first pattern 521) The first pattern modules 52 having a rectangular shape as a whole are repeatedly arranged at regular intervals in the vertical direction with respect to the Y axis. Accordingly, each of the first pattern 521 and the second pattern 522 includes two oblique lines, and each of the oblique sides of the first pattern 521 and the second pattern 522 includes an X- And a plurality of depressions 521a and 522a formed to be embedded in the vertical direction at regular intervals. The spaces between the first pattern 51 and the second pattern 522 and the depressions 521a and 522a are nonconductive. Each of the first pattern 521 and the second pattern 522 is connected to the controller by a separate wiring 3.

The second electrode pattern 53 includes a connection pattern 541 at one end of the first electrode pattern 51 and a terminal at the other end of the connection pattern 541, An extension pattern 542 extending from the extension pattern 542 and located in a space between the first pattern 521 and the second pattern 522 of the first pattern module 52, The second pattern modules 54 formed of a plurality of branch patterns 543 extending upward and downward at regular intervals and positioned in the respective depressions 521a and 522a of the first and second patterns 521 and 522 And are repeatedly arranged at regular intervals based on the X axis. The extension pattern 542 extends in a slanting pattern in the connection pattern 541 and passes between the first electrode 5211 of the first pattern 521 and the first electrode 5221 of the second pattern 522 The first elongated pattern 542a and the first elongated pattern 542a are extended in a horizontal form to form a second electrode 5212 of the first pattern 521 and a second electrode 5212 of the second pattern 522, A second extension pattern 542b extending between the second electrode 5212 and the second pattern 522 and extending from the end of the second extension pattern 542b to an oblique line, And a third elongated pattern 542c passing between the second electrode 5222 of the first electrode 522 and the second elongated pattern 542c. The extension pattern 542 of the second pattern module 53 is positioned on the lower side with respect to the Y axis as the second pattern module 54 is separated from the first electrode pattern 51 with respect to the X axis so as not to overlap with each other, The first pattern 521 is positioned between the first pattern 521 and the second pattern 522 of the first pattern module 51. A plurality of extension patterns 542 may be formed at the upper and lower predetermined intervals in the one connection pattern 541. Each extension pattern 542 may be formed on the first pattern 521 of each first pattern module 52 And the second pattern 522, as shown in FIG. Each of the connection patterns 541 of the second pattern module 54 is connected to the controller by a separate wiring 3. Since the first pattern and the second pattern do not have one triangular shape but have a partially overlapping shape of the triangular shape, the electrode pattern can improve the accuracy of Y-axis coordinate measurement compared to the electrode pattern described with reference to FIGS. have.

The electrode pattern 6 according to another embodiment of the present invention will be described with reference to FIGS. 10 to 12. The electrode pattern 6 includes a first electrode pattern 61 in the first row, A first electrode pattern 61 'of a second row having a shape symmetrical to the first electrode pattern 61 of the first row and a first electrode pattern 61' of a second row having a first electrode pattern 61 ' And a second electrode pattern 63 'in the first row and a second electrode pattern 63' in the second row, which are located between the electrode patterns 61 'and symmetrically symmetrical with respect to the X axis at regular intervals. The first electrode pattern 61 in the first column and the second electrode pattern 63 in the first column are the same as the first electrode pattern 51 and the second electrode pattern 53 described with reference to FIGS. A description thereof will be omitted. When the coordinates of the touch point in the touch screen device are obtained, the controller applies a predetermined time interval (first interval) to each of the first patterns 621 and 621 'and the second patterns 622 and 622' of the first electrode patterns 61 and 61 ' The first pattern 621 and the second pattern 621 'which are symmetrical with each other on the first electrode pattern 61 in the first row and the first electrode pattern 61' And each of the second pattern 622 and 622 'is applied with a voltage at the same moment), and each of the second pattern modules 64 and 64' of the second electrode pattern 63 and 63 ' And the output electric charge is sent to the controller.

The wiring 3 has one end connected to the electrode pattern 2 and the other end connected to the controller to supply the voltage applied from the controller to the electrode pattern 2 and to charge the electrode pattern 2 To the controller. The wiring 2 is made of a constant material, but preferably a conductive material having a low resistance is used.

The controller (not shown) is connected to the other end of the wire 3 to apply a voltage to the electrode pattern 2 and calculate the change of the amount of charge transferred from the electrode pattern 2 to calculate coordinates of the touch point When the controller applies a voltage to the first electrode pattern 21, mutual capacitance is formed between the first electrode pattern 21 and the second electrode pattern 23, 23) and the wiring (3). At this time, when the user touches the touch screen device with a conductor such as a hand, charged electricity is absorbed by the conductor between the first electrode pattern 21 and the second electrode pattern 23, (The first pattern and the second pattern are symmetrical with each other in a right triangle shape and a diagonal direction, and the area of the first pattern and the second pattern, which are in contact with the conductor according to the touch point, The amount of charge absorbed by the conductor varies depending on the touch point). The coordinates of the touch point can be calculated, which will be described in detail later.

Hereinafter, a method of obtaining X and Y coordinates of a touch point in the touch screen device described with reference to FIGS. 1 to 3 will be described with reference to FIGS. 1 to 3 and 13. FIG. Meanwhile, the method of obtaining the coordinates of the touch point in the touch screen device described with reference to FIGS. 4 to 12 is also performed in the same manner as the method of obtaining the coordinates of the touch point in the touch screen devices of FIGS. In the following description, the first electrode pattern 21 is used as a driving line for applying a voltage and the second electrode pattern 23 is used as a sensing line for outputting the output. However, the first electrode pattern 21 may be a sensing line, And the second electrode pattern 23 may be used as a driving line.

The controller sequentially applies voltages to the first and second patterns 221 and 222 of the first electrode pattern 21 at regular intervals of time, Each of the second pattern modules 24 of the second electrode pattern 23 outputs the charge charged in the mutual capacitance and the output charge is sent to the controller. In this process, when the electrode pattern 2 is touched by a conductor such as a human hand, the electric charge charged in the mutual capacitance is outputted to the conductor and the amount of electric charge outputted through the second pattern module 24 is reduced, The coordinate of the touch point is obtained in consideration of the amount of change of the outputted charge. For example, as shown in FIG. 13, driving lines (TX0, TX1, ..., TXn-1, TXn) are set in a first electrode pattern and sensing lines RX0 , RX1, ..., RXn-1, and RXn are set and a sequential voltage is applied to the driining lines TX0, TX1, ..., TXn-1, TXn with a predetermined time interval. When a voltage is applied to the driving line TX0, each of the sensing lines RX0, RX1, ..., RXn-1, and RXn outputs a charge. When a voltage is applied to the sensing line TX1, each of the sensing lines outputs a charge . When a voltage is continuously applied to each of the driving lines TX3, TXn-1, TXn at predetermined time intervals, each of the sensing lines outputs the corresponding charge. Information on the amount of charge output by the sensing line when the electrode pattern 2 is not in contact with the conductor is recorded in the controller, and when the specific point is touched by the conductor, the changed amount of charge The first pattern and the second pattern have a shape that is symmetrical with respect to a right triangle shape and a diagonal direction so that the area of the first pattern and the second pattern contacting the conductor varies depending on the touch point, Information on the electric charge outputted by the sensing line is also changed). When a specific charge is outputted from the sensing line, the controller examines the stored information and obtains coordinates of the touched point. For example, the controller obtains the X-axis coordinate of the touch point by the following expression (1) and obtains the Y-axis coordinate of the touch point by the following expression (2) (see FIG. 13). m represents the order of the first pattern module (where 0, 1, 2, ..., m each have a value from the upper side to the lower side), m represents the number of the first pattern modules constituting the first electrode pattern (K) is a value output from the second pattern module when a voltage is applied to the k-th first pattern, and Rcolumn (k) is a value obtained by subtracting 1 2 pattern module, and row [k] is a value obtained by adding the value of Lcolumn (k) and the value of Rcolumn (k).

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, Should be interpreted as falling within the scope of.

1: substrate 2, 4, 5, 6: electrode pattern 3: wiring
21: first electrode pattern 22: first pattern module 23: second electrode pattern
24: second pattern module 221: first pattern 222: second pattern
241: connection pattern 242: extension pattern 243: branch pattern
221a, 222a:

Claims (12)

Claims [1] And an electrode pattern having a first electrode pattern and a second electrode pattern located at equal intervals on the same surface of the substrate,
Wherein the first electrode pattern has a first pattern having a figure shape whose width decreases from one side to the other with reference to one axis and a second pattern having a figure shape spaced apart from the first pattern and symmetrical in a diagonal direction, Wherein the first pattern module including the pattern is repeatedly arranged at regular intervals in the vertical direction with respect to the other axis orthogonal to the first axis,
The second electrode pattern may include a connection pattern formed at one side of the first electrode pattern and spaced apart from the first electrode pattern and having ends connected to wirings, and a connection pattern extending from one side of the connection pattern, A second pattern module including an extension pattern located in a space between the patterns is repeatedly arranged at regular intervals with reference to one axis,
The first electrode pattern is used as a driving line or sensing line. When the first electrode pattern is used as a driving line, the second electrode pattern is used as a sensing line. When the first electrode pattern is used as a sensing line, And the second electrode pattern is used as a driving line. The method according to claim 1,
Wherein each of the first pattern and the second pattern includes a plurality of indentations formed by being embedded in a vertical direction at regular intervals in a uniaxial direction,
Wherein the second pattern module further includes a plurality of branch patterns extending upwardly and downwardly at regular intervals with reference to one axis in the extension pattern and located in each of the first pattern and the second pattern. Structure of mutual capacitance type touch screen device. The method according to claim 1,
A plurality of extension patterns may be formed in one connection pattern at regular intervals in the vertical direction and each extension pattern is located in a space between the first pattern and the second pattern of each first pattern module. Structure of mutual capacitance type touch screen device. The method of claim 3,
The extension pattern of the second pattern module is positioned between the first pattern and the second pattern of the first pattern module located on the lower side with respect to the other axis orthogonal to the first axis, Layer capacitive touch screen device. Claims [1] A first electrode pattern of a first row and a first electrode pattern of a second row having a shape symmetrical with respect to a first electrode pattern of the first row at a predetermined interval with reference to one axis with respect to a first axis, And a second electrode pattern of a first row and a second electrode pattern of a second row which are located between the first electrode patterns of the second row and are symmetrical with respect to one axis with a predetermined interval on the basis of one axis,
The first electrode pattern of the first row is the first electrode pattern of any one of claims 1 to 4,
Wherein the second electrode pattern of the first row is the second electrode pattern of any one of claims 1 to 4. Claims [1] And an electrode pattern having a first electrode pattern and a second electrode pattern located at equal intervals on the same surface of the substrate,
Wherein the first electrode pattern includes a first pattern module and a first pattern module having a second pattern positioned at a predetermined distance from the first pattern and symmetrical in a diagonal direction, 1 pattern modules are repeatedly arranged at regular intervals in the vertical direction on the other axis orthogonal to the one axis,
The first pattern 521 includes a first electrode 5211 having a shape decreasing in width from one side to the other with reference to one axis, and a second electrode 5211 having a shape of a figure whose width decreases from one side to the other side The first pattern 5211 includes a second electrode 5212 disposed under the first electrode 5211 and a second electrode 5212 disposed below the first electrode 5211 and a second electrode 5212. [ ) Are partially connected to each other,
The second electrode pattern may include a connection pattern formed at one side of the first electrode pattern and spaced apart from the first electrode pattern and having ends connected to wirings, and a connection pattern extending from one side of the connection pattern, And the second pattern modules having an extension pattern located in a space between the patterns are repeatedly arranged at regular intervals based on a single axis. The method according to claim 6,
Wherein each of the oblique sides of the first pattern and the second pattern includes a plurality of depressions formed by being embedded in a vertical direction at regular intervals in a uniaxial direction,
Wherein the second pattern module further includes a plurality of branch patterns extending upwardly and downwardly at regular intervals with reference to one axis in the extension pattern and located in each of the first pattern and the second pattern. Structure of mutual capacitance type touch screen device. The method of claim 6, wherein the extension pattern
A first extension pattern extending obliquely from the connection pattern and passing between the first electrode of the first pattern and the first electrode of the second pattern, and a second extension pattern extending in the horizontal form at the end of the first extension pattern, A second extending pattern extending between the second electrode of the first pattern and the first electrode of the second pattern and extending obliquely at the end of the second extending pattern to form a second electrode of the first pattern and a second pattern of the second pattern, And a third elongated pattern passing between the first electrode and the second electrode. The method according to claim 6,
A plurality of extension patterns may be formed at regular intervals in one connection pattern, each extension pattern being located in a space between the first pattern and the second pattern of each first pattern module,
The extension pattern of the second pattern module is positioned between the first pattern and the second pattern of the first pattern module located on the lower side with respect to the other axis orthogonal to the first axis, Layer capacitive touch screen device. Claims [1] A first electrode pattern of a first row and a first electrode pattern of a second row having a shape symmetrical with respect to a first electrode pattern of the first row at a predetermined interval with reference to one axis with respect to a first axis, And a second electrode pattern of a first row and a second electrode pattern of a second row which are located between the first electrode patterns of the second row and are symmetrical with respect to one axis with a predetermined interval on the basis of one axis,
The first electrode pattern of the first row is the first electrode pattern of any one of claims 6 to 9,
And the second electrode pattern of the first row is the second electrode pattern of any one of claims 6 to 9. 5. The touch screen device according to any one of claims 1 to 4, wherein the mutual capacitive touch screen device
And a controller connected to the other end of the wire to apply a voltage to the electrode pattern and calculate a change in the amount of charge transferred from the electrode pattern to calculate coordinates of the touch point,
When the controller sequentially applies a voltage to each of the first pattern and the second pattern of the first electrode pattern at predetermined time intervals, each of the second pattern modules of the second electrode pattern outputs the charge charged to the mutual capacitance And the output electric charge is sent to the controller. 6. The touch screen device of claim 5, wherein the mutual capacitance type touch screen device
And a controller connected to the other end of the wire to apply a voltage to the electrode pattern and calculate a change in the amount of charge transferred from the electrode pattern to calculate coordinates of the touch point,
When the controller sequentially applies a voltage to each of the first pattern and the second pattern of the first electrode pattern at predetermined time intervals, each of the second pattern modules of the second electrode pattern outputs the charge charged to the mutual capacitance The output electric charge is sent to the controller,
Wherein a voltage is applied to the first electrode pattern of the first column and the first electrode pattern of the second column at the same moment, Capacitive touchscreen device.

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