KR101567913B1 - Touch panel and touch detection device having the same - Google Patents

Abstract

A touch panel capable of reducing the manufacturing cost and capable of multi-point recognition and a touch sensing apparatus having the touch panel are disclosed. The touch panel includes a receive line, a plurality of left transmit lines, and a plurality of right transmit lines. The reception line includes a main wiring extending in the first direction and a plurality of branch wiring branched from the main wiring. The left transmission lines are arranged so as to surround the main wiring and the branch wiring from one side. The right transmission lines are arranged in a shape wrapping the main wirings and the branch wirings from the other side, arranged in a coupling form with the left transmission line with respect to the reception line, and arranged in zigzag form with the left transmission line with respect to the reception line.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a touch panel and a touch sensing device having the touch panel,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a touch panel and a touch sensing device having the touch panel, and more particularly, to a touch panel capable of reducing manufacturing cost and capable of multi-point recognition and a touch sensing device having the touch panel.

As the kinds of electronic devices to be encountered in everyday life are gradually diversified and the function of each electronic device becomes more sophisticated and complicated, there is a need for a user interface that can be easily learned and intuitively operated by the user. A touch sensing device has been attracting attention as an input device capable of satisfying such a requirement and has already been widely applied to various electronic devices.

A touch sensing device for recognizing a screen touch or a gesture of a user as input information is classified into a resistance film type, a capacitive type, an ultrasonic type, and an infrared type depending on the operation type of the touch sensing device. The capacity method is attracting much attention because it is easy to input multi-touch.

In such a capacitance type touch panel, it is important to structure the touch panel to more accurately detect the change in capacitance. The touch panel may have a two-layer structure, wherein the touch sensor includes a plurality of drive electrode traces intersecting a plurality of sense electrode traces (e.g., traces extending in the X axis direction) (e.g., Y-axis direction traces), and the drive and sense electrode traces are separated by a dielectric material such as PET, Glass, or the like.

However, the touch panel, which includes the drive and sense electrode traces, respectively formed in the lower and upper layers of the two-layer structure, can be expensive to manufacture and can be thickened. This is due to the process and structure of bonding the electrode layers of the two-layer structure.

Accordingly, a touch panel having coplanar single layer touch sensors fabricated on a single side of a single layer of a substrate of a touch panel has been proposed.

Korean Registered Patent No. 10-0885730 (registered date: February 19, 2009) Korea Patent Publication No. 2010-0083012 (Published on July 21, 2010) Korean Registered Patent No. 10-1169250 (registered on July 23, 2012) Korean Public Patent No. 2012-0094982 (public date: August 28, 2012) Korean Laid-Open Patent Application No. 2013-0035833 (Publication Date: April 9, 2013)

Accordingly, it is an object of the present invention to provide a touch panel capable of reducing manufacturing cost and capable of multi-point recognition.

Another object of the present invention is to provide a touch sensing device having the above-described touch panel.

In order to realize the object of the present invention, the touch panel according to an embodiment includes a reception line, a plurality of left transmission lines, and a plurality of right transmission lines. The reception line includes a main wiring extending in a first direction and a plurality of branch wiring branched from the main wiring. The left transmission lines are arranged in such a manner as to surround the main wiring and the branch wiring from one side. Wherein the right transmission lines are arranged in a shape to wrap the main wiring and the branch wiring from the other side and are arranged in a coupling form with the left transmission line with respect to the reception line, .

In one embodiment, the receive lines may be disposed in opposite shapes.

In one embodiment, the receive lines may be arranged in an alternating fashion.

In one embodiment, the main wiring and the branch wirings are arranged in a cross shape, and the branch wirings can be branched at a right angle in the main wiring.

In one embodiment, the main wiring and the branch wirings are arranged in a cross shape, and the branch wirings can be branched at an obtuse angle or an acute angle in the main wiring.

In one embodiment, the main wiring may extend in a zigzag shape, and the branch wirings may be branched at an inflection portion of the main wiring.

In one embodiment, the touch panel may further comprise a plurality of dummy patterns disposed between the receive line and the left transmit line.

In one embodiment, the touch panel may further comprise a plurality of dummy patterns disposed between the receive line and the right transmit line.

In one embodiment, the touch panel includes: a receive routing wiring connected to the receive line and extending in the longitudinal direction of the main wiring; A plurality of left routing wires connected to each of the left transmission lines and extending in the longitudinal direction of the main wiring; And a plurality of right routing wires connected to each of the right transmission lines and extending in the longitudinal direction of the main wiring.

In one embodiment, the width of the left routing interconnects and the width of the right routing interconnects may be thicker as they are further away from the receive line.

In one embodiment, it may further comprise a plurality of dummy patterns disposed between the left transmission line and the left routing wiring closest to the left transmission line.

In one embodiment, it may further comprise a plurality of dummy patterns disposed between the right transmission line and the right routing wiring closest to the right transmission line.

In one embodiment, the reception line, the left transmission line, the right transmission line, the left routing wiring, the right routing wiring, and the reception routing wiring may be arranged on the same layer.

In one embodiment, the ground wiring includes a main-ground wiring arranged in a shape surrounding the touch sensing area; And a sub-ground wiring disposed between the receive routing wiring and the transmission routing wiring adjacent to the receive routing wiring in the peripheral region.

In one embodiment, each of the left routing wiring, the right routing wiring, and the receiving routing wiring may extend to the peripheral region to define a pad member.

According to another aspect of the present invention, a touch sensing apparatus includes a touch panel and a circuit board. The touch panel includes a touch sensing area and a peripheral area surrounding the touch sensing area, and a plurality of touch sensing lines are formed in the touch sensing area. The circuit board is disposed at one end of the touch sensing area, and senses capacitance at the touch sensing lines. Each of the touch sensing lines includes: a reception line including a main line extending in a first direction and a plurality of branch lines branched from the main line; A plurality of left transmission lines arranged to surround the main wiring and the branch wiring from one side; And a plurality of right transmission lines arranged in a zigzag configuration with the left transmission line and the right transmission line arranged in a shape that wraps around the main wiring and the branch wiring from the other side, .

In one embodiment, the circuit board may include a first capacitive sensing circuit and a second capacitive sensing circuit. Wherein the first capacitance sensing circuit includes a first charge integration circuit based on a current mirror and is connected to the reception line, the left transmission lines and the right transmission lines and the reception lines, respectively, A difference in capacitance generated between the reception lines, and a difference in capacitance generated between the right transmission line and the reception line are detected to determine whether or not the user touches the touch panel. The second capacitance sensing circuit includes a second charge integrating circuit based on a current mirror and is connected to a sensing line connected to a button pattern of a touch button area of the touch panel, To determine whether or not the touch is made.

In one embodiment, the circuit board includes a current mirror-based charge integration circuit and is connected to transmission lines and reception lines disposed in a touch screen area of the touch panel, and operates in a self-capacitance mode at the beginning of a touch operation And a capacitive sensing circuit that operates in a mutual-capacitance mode as the touch is sensed. The capacitance sensing circuit may include a transmitting circuit and a receiving circuit. The transmission circuitry is connected to each of the transmission lines and applies a square wave transmission signal to the transmission line. The receiving circuit is connected to each of the receiving lines and receives a square wave receiving signal through the receiving line. The receiving circuitry may include a receive switch and a receive line coupler. The receiving switch connects one of the reception lines and the charge integration circuit to each other and provides a received signal transmitted through the reception line to the charge integration circuit. The receive line coupler couples the receive lines to one signal line and outputs a summed voltage flowing through the coupled signal line.

According to the touch panel and the touch sensing device having the touch panel, since the electrode patterns and the routing wirings are disposed on the same layer, a separate bridge process for connecting the electrode patterns and the routing wirings is unnecessary, and electrode patterns, Since an insulating film for insulation between wirings is unnecessary, manufacturing cost of the touch panel can be reduced. In addition, since the left transmission lines and the right transmission lines are arranged in a zigzag shape with respect to the reception line, multi-point recognition is possible.

1 is an exploded perspective view of a touch sensing device employing a touch panel according to the present invention.
2 is a plan view schematically illustrating a touch panel according to an embodiment of the present invention.
FIG. 3A is an enlarged view showing regions A and B of FIG. 2, respectively.
FIG. 3B is a cross-sectional view taken along line I-I 'of FIG. 3A.
4 is a plan view schematically illustrating the touch sensing line shown in FIG.
5 is a plan view schematically illustrating a modification of the touch sensing line according to an embodiment of the present invention.
6 is a plan view schematically illustrating a modification of the touch sensing line according to an embodiment of the present invention.
7 is a plan view schematically illustrating a modification of the touch sensing line according to an embodiment of the present invention.
8 is a plan view schematically illustrating a modification of the touch sensing line according to an embodiment of the present invention.
9 is a plan view schematically illustrating a modification of the touch sensing line according to an embodiment of the present invention.
10 is a plan view schematically illustrating a modification of the touch sensing line according to an embodiment of the present invention.
11 is a plan view schematically illustrating a modification of the touch sensing line according to an embodiment of the present invention.
12 is a plan view schematically illustrating a modification of the touch sensing line according to an embodiment of the present invention.
13 is a schematic view for explaining a touch sensing apparatus according to an embodiment of the present invention.
14 is a schematic view for explaining the circuit board shown in Fig.
FIG. 15 is an equivalent circuit diagram schematically illustrating an example of the electrostatic capacitance sensing circuit for a touch panel of the mutual-capacitance type shown in FIG.
16 is a waveform diagram for explaining the operation of the capacitance sensing circuit for a touch panel of Fig.
17 is a schematic view for explaining a touch sensing apparatus according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in more detail with reference to the accompanying drawings. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Like reference numerals are used for like elements in describing each drawing. In the accompanying drawings, the dimensions of the structures are enlarged to illustrate the present invention in order to clarify the present invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. The singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a part or a combination thereof is described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Also, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

1 is an exploded perspective view of a touch sensing device employing a touch panel according to the present invention.

1, the touch sensing apparatus includes a touch panel 10, a circuit board 20, and a transparent window 30, and is disposed on the display panel 40.

The touch panel 10 may be formed of a rigid material such as a polyethylene terephthalate (PET), a polycarbonate (PC), a polyethersulfone (PES), a polyimide (PI), a polyimide methacrylate (PMMA) And the like.

The touch panel 10 includes a touch sensing area TA and a peripheral area PA and may be electrically connected to the circuit board 20 through a wiring connecting member WCM.

The touch sensing area TA is an area for sensing input information generated by a user's screen touch or gesture, and may include a plurality of touch sensing lines. Each of the touch sensing lines includes a reception line, a left transmission line disposed in a left area of the reception line, and a right transmission line disposed in a right area of the reception line. The touch sensing line will be described later in detail.

The transparent window 30 has a contact sensing area 34 and an outer area 35 and is exposed to the outside to receive contact of a conductive object such as the user's body or stylus pen. Thus, the transparent window 30 must be of high hardness. The transparent window 30 is made of hardened glass or a high hardness plastic material made of a combination of PMMA, PC, PET and the like, and can have a constant thickness of 0.5 T or more.

When the touch sensing lines are formed on the top surface of the touch panel 10, the transparent window 30 may be disposed on the touch panel 10. Meanwhile, when the touch sensing lines are formed on the back surface of the touch panel 10, the transparent window 30 may be omitted.

In addition, the touch sensing lines may be formed on the uppermost glass of the display panel 40. For example, when the touch sensing lines are formed on the upper surface of the uppermost glass of the display panel 40, the transparent window 30 may be disposed on the display panel 40. As another example, when the touch sensing lines are formed on the back surface of the uppermost glass of the display panel 40, the transparent window 30 may be omitted.

The peripheral area PA surrounds the touch sensing area TA and has a wiring pattern for transmitting a sensing signal generated in the touch sensing area TA. The touch sensing area TA and the peripheral area PA may be integrated or may be integrated in the peripheral area PA with the input information of the user .

2 is a plan view schematically illustrating a touch panel according to an embodiment of the present invention. FIG. 3A is an enlarged view showing regions A and B of FIG. 2, respectively. FIG. 3B is a cross-sectional view taken along line I-I 'of FIG. 3A. 4 is a plan view schematically illustrating the touch sensing line 1100 shown in FIG. 3A, the area A is an area extracted from a part of the touch sensing line 1100 adjacent to the pad part, and the area B is an area excerpted from a part of the touch sensing line 1100 adjacent to the button part.

Referring to FIGS. 2, 3A, 3B and 4, the touch panel includes a transparent substrate and a plurality of touch sensing lines 1100 formed on the transparent substrate. In this embodiment, the touch sensing lines 1100 extend in the first direction D1 and are arranged in the second direction D2. The first direction D1 and the second direction D2 may be perpendicular to each other. In this embodiment, an example in which 11 touch sensing lines are arranged is shown.

Each of the touch sensing lines 1100 includes a receive line 1110, a left transmit line 1120 disposed in the left region of the receive line 1110 from the observer's point of view, a right transmit line 1110 disposed in the right region of the receive line 1110, A left routing wiring 1140 connected to the left transmission line 1120 and a right routing wiring 1150 connected to the right transmission line 1130. [

The reception line 1110 includes main wirings 1112 extending in the first direction D1 and a plurality of branch wirings 1114 branched along the second direction D2 at the main wirings 1112. [ The width of the main wiring 1112 and the width of the branch wiring 1114 may be the same. In this embodiment, the receive lines 1110 are disposed in opposing shapes. That is, one of the branch wirings 1114 branches toward the left transmission line 1120, and the other branches toward the right transmission line 1130 at the same site as that branching to the left transmission line 1120. Thus, the branch wirings 1114 can be arranged in a cross shape. In this embodiment, the main wiring 1112 has a linear shape, but it may have a curved shape.

The left transmission line 1120 includes a first left pattern 1122, a second left pattern 1124 and a third left pattern 1126 and is spaced apart from the main wiring 1112 and the branch wirings 1114 by a predetermined distance So as to surround the main wirings 1112 and the branch wirings 1114 from one side. For convenience of illustration, the left transmission line 1120 has been shown to include three left patterns, but is not so limited. The spacing distance between the left transmission line 1120 and the main wiring 1112 and the branch wiring 1114 can be uniform.

Specifically, the first left pattern 1122, the second left pattern 1124, and the third left pattern 1126 are formed in a tooth shape to cover the main wiring 1112 and the branch wirings 1114. Each of the first left pattern 1122 and the third left pattern 1126 includes three tooth members. The width of one tooth member disposed at the center portion is twice the width of each of the tooth members disposed at the outer portion.

The second left pattern 1124 includes five tooth members. The widths of the three tooth members disposed at the center are equal to each other, and the widths of the two tooth members disposed at the outer frame portion are equal to each other. The width of the tooth member disposed at the outer portion is half the width of the tooth member disposed at the center portion.

The right transmission line 1130 includes a first right pattern 1132 and a second right pattern 1134. The right transmission line 1130 includes main wiring 1112 and branch wiring 1114, And the branch wirings 1114 from the other side. The spacing between the right transmission line 1130 and the main wiring 1112 and the branch wiring 1114 can be uniform. For convenience of illustration, the right transmission line 1130 has been shown to include two left patterns, but is not so limited.

Specifically, the first right pattern 1132 and the second right pattern 1134 are formed in a tooth shape to cover the main wiring 1112 and the branch wirings 1114.

Each of the first right pattern 1132 and the second right pattern 1134 includes five tooth members. The widths of the three tooth members disposed at the center are equal to each other, and the widths of the two tooth members disposed at the outer frame portion are equal to each other. The width of the tooth member disposed at the outer portion is half the width of the tooth member disposed at the center portion.

4, the left transmission line 1120 includes three left patterns, and the right transmission line 1130 includes two right patterns. However, the left transmission line 1120 may include n (n is a natural number) left patterns and the right transmission line 1130 may include (n-1) right patterns. For example, the left transmission line 1120 includes ten left patterns, the shape of the two left patterns corresponding to the outermost portion includes three tooth members as the first left pattern 1122, The second left pattern 1124 may include five tooth members.

The left routing wiring 1140 includes a first left routing wiring 1142, a second left routing wiring 1144 and a third left routing wiring 1146. The left routing wiring 1140 includes a left transmission line 1120, And is connected to the left transmission line 1120. [ The first left routing wiring 1142 is connected to the first left pattern 1122 and extends to the peripheral region PA in parallel with the longitudinal direction of the main wiring 1112. [ The second left routing wiring 1144 is connected to the second left pattern 1124 and extends to the peripheral region PA in parallel with the longitudinal direction of the main wiring 1112. [ The third left routing wiring 1146 is connected to the third left pattern 1126 and extends to the peripheral region PA in parallel with the longitudinal direction of the main wiring 1112.

The right routing wiring 1150 includes a first right routing wiring 1152 and a second right routing wiring 1154 and is disposed in an area opposite to the reception line 1110 with respect to the right transmission line 1130, Line 1130 of FIG. The first right routing wiring 1152 is connected to the first right pattern 1132 and extends to the peripheral area PA in parallel with the longitudinal direction of the main wiring 1112. [ The second right routing wiring 1154 is connected to the second right pattern 1134 and extends to the peripheral area PA in parallel with the longitudinal direction of the main wiring 1112. [

The reception lines include a main wiring extending in a first direction (D1) and a plurality of branch wiring branched from the main wiring.

The left transmission lines are arranged in such a manner as to surround the main wiring and the branch wiring from one side.

The right transmission lines are arranged in a shape to wrap the main wiring and the branch wiring from the other side. The right transmission lines are arranged in a coupling form with the left transmission line with respect to the reception line and are arranged in a zigzag form with the left transmission line with respect to the reception line.

The touch panel further includes a ground line GNL surrounding the touch sensing area TA formed with the touch sensing lines 1100. The ground wiring GNL includes a main-ground wiring GNLM and a sub-ground wiring GNLS.

The main-ground wiring GNLM is disposed in a shape surrounding the touch sensing area TA.

The sub-ground wiring GNLS is disposed between the reception routing wiring and the transmission routing wiring closest to the reception routing wiring in the peripheral area PA.

The left routing interconnections 1140 of the touch sensing line 1100 extend to the peripheral region PA to define the left transmission pad members and the right routing interconnections 1150 of the touch sensing line 1100 define the peripheral regions PA ) To define the right transmission pad members. The width of each of the left transmission pads may be greater than the width of each of the left routing pads 1140 and the width of each of the right transmission pads may be greater than the width of each of the right routing pads 1150.

A receive line 1110 of the touch sensing line 1100 defines a receive pad with a reduced width in the peripheral area PA. Since the reception line 1110 and the left transmission line 1120 are spaced apart by a predetermined distance, a plurality of dummy patterns DMP may be disposed in the spaced apart spaces. In addition, since the reception line 1110 and the right transmission line 1130 are spaced apart by a predetermined distance, a plurality of dummy patterns DMPs may be disposed in the spaced apart space.

A plurality of dummy patterns DMP may be disposed between the left transmission lines 1120 and the left routing wiring 1140 closest to the respective left transmission lines 1120. In addition, a plurality of dummy patterns DMP may be disposed between the right transmission line 1130 and the right routing wiring 1150 contacting the right transmission line 1130.

A left ground line is disposed between the reception line 1110 adjacent to the pad portion and the left routing wiring 1140 adjacent to the reception line 1110. [ Further, the right ground wiring is disposed between the reception line 1110 adjacent to the pad portion and the right routing wiring 1150 adjacent to the reception line. Each ground line extends to the peripheral area PA to define a left ground pad and a right ground pad. Thus, it is possible to prevent a signal transmitted through the left routing wiring 1140 or the right routing wiring 1150 from adversely affecting the reception line 1110. It is also possible to prevent a signal transmitted through the reception line 1110 from adversely affecting the left routing wiring 1140 or the right routing wiring 1150. [

3B, the reception line 1110, the left transmission line 1120, the right transmission lines 1130, the left routing wiring 1140, the right routing wiring 1150, and the dummy patterns DMP Are arranged on the same layer. Accordingly, the reception line 1110, the left transmission line 1120, the right transmission lines 1130, the left routing wiring 1140, the right routing wiring 1150, and the dummy patterns DMP contain the same material , Can be produced simultaneously through the same mask.

Examples of the transparent conductive material applicable to the reception line 1110, the left transmission line 1120, the right transmission lines 1130, the left routing wiring 1140, the right routing wiring 1150 and the dummy patterns DMP include Oxides such as ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide) and ZO (Zinc Oxide), carbon nanotubes, metal nanowires, conductive polymers, silver nano wires and graphenes .

The reception line 1110, the left transmission line 1120, the right transmission lines 1130, the left routing wiring 1140, the right routing wiring 1150 and the dummy patterns DMP are formed on one surface of the touch panel 10 It can be integrally formed on one surface of the touch panel 10 by performing the collective sputtering and etching according to the electrode and the wiring pattern.

4, the widths of the first left pattern 1122, the second left pattern 1124, and the third left pattern 1126 are shown to be equal to each other. However, as the distance from the left transmission pad member increases, It is possible. Although the widths of the first right pattern 1132 and the second right pattern 1134 are shown to be equal to each other, the width may gradually increase as the distance from the right transmission pad member increases.

As described above, according to this embodiment, since the electrode patterns or the routing wirings are disposed on the same layer, a separate bridge process for connecting the electrode patterns or the routing wirings is unnecessary, and the electrode patterns arranged in different layers An insulating film for insulation between the routing wirings is unnecessary. Therefore, the manufacturing cost of the touch panel can be reduced.

5 is a plan view schematically illustrating a modification of the touch sensing line according to an embodiment of the present invention. In particular, an example is shown in which serrated left and right transmission lines are arranged in a zigzag manner with respect to the reception line.

5, the touch sensing line 1200 includes a receive line 1210, a left transmit line 1220 disposed in the left region of the receive line 1210 from the observer's point of view, A left routing wiring 1240 connected to the left transmission line 1220 and a right routing wiring 1250 connected to the right transmission line 1230.

The reception line 1210 includes main wirings 1212 extending in the first direction D1 and a plurality of branch wirings 1214 branched along the second direction D2 at the main wirings 1212. [ The receiving line 1210 is the same as the receiving line 1110 of FIG. 3, and thus a detailed description thereof will be omitted.

The left transmission line 1220 includes a first left pattern 1222, a second left pattern 1224 and a third left pattern 1226 and is spaced apart from the main wiring 1212 and the branch wirings 1214 by a predetermined distance So as to surround the main wiring 1212 and the branch wirings 1214 from one side. The first left pattern 1222, the second left pattern 1224 and the third left pattern 1226 have the first left pattern 1122, the second left pattern 1124 And the third left pattern 1126, detailed description thereof will be omitted.

The right transmission line 1230 includes a first right pattern 1232 and a second right pattern 1234 and is connected to the main wiring 1212 at regular intervals from the main wiring 1212 and the branch wirings 1214, And the branch wirings 1214 from the other side. Since the first right pattern 1232 and the second right pattern 1234 are the same as the first right pattern 1132 and the second right pattern 1134 described in Fig. 3 except for the saw tooth shape, It is omitted.

The left routing wiring 1240 includes a first left routing wiring 1240, a second left routing wiring 1240, and a third left routing wiring 1240. Since the left routing wiring 1240 is the same as the left routing wiring 1140 described in FIG. 3, detailed description is omitted. In this embodiment, the left routing wiring 1240 has a linear shape, but it may have a saw-tooth shape.

The right routing wiring 1250 includes a first right routing wiring 1250 and a second right routing wiring 1250. Since the right routing wiring 1250 is the same as the right routing wiring 1150 described in FIG. 3, detailed description is omitted. In this embodiment, the right routing wiring 1250 has a linear shape, but may have a saw-tooth shape.

5, the widths of the first left pattern 1222, the second left pattern 1224, and the third left pattern 1226 are shown to be equal to each other. However, as the distance from the left transmission pad member increases, the width gradually increases It is possible. Although the widths of the first right pattern 1232 and the second right pattern 1234 are shown to be equal to each other, the width may gradually increase as the distance from the right transmission pad member increases.

6 is a plan view schematically illustrating a modification of the touch sensing line according to an embodiment of the present invention. Particularly, an example is shown in which the reception lines are formed in a shifted shape and the branch wirings are branched vertically in the main wirings.

6, the touch sensing line 1300 includes a receive line 1310, a left transmit line 1320 disposed in the left region of the receive line 1310 from the observer's point of view, A left routing wiring 1340 connected to the right transmission line 1330 and a left transmission line 1320 and a right routing wiring 1350 connected to the right transmission line 1330.

The reception line 1310 includes main wirings 1312 extending in the first direction D1 and a plurality of branch wirings 1314 branched along the second direction D2 at the main wirings 1312. [ The width of the main wiring 1312 and the width of the branch wiring 1314 may be the same. In this embodiment, the reception lines 1310 are arranged in a shifted shape. That is, one of the branch wirings 1314 branches toward the left transmission line 1320 and the other branches toward the right transmission line 1330 at a portion different from the portion branched to the left transmission line 1320. Accordingly, the branch wirings 1314 can be arranged in a staggered manner with respect to the main wirings 1312. [ Although the main wiring 1312 has a linear shape in FIG. 6, it may have a curved shape.

The left transmission line 1320 includes a first left pattern 1322, a second left pattern 1324 and a third left pattern 1326 and is spaced apart from the main wirings 1312 and the branch wirings 1314 So as to surround the main wirings 1312 and the branch wirings 1314 from one side. The first left pattern 1322, the second left pattern 1324 and the third left pattern 1326 correspond to the first left pattern 1122, the second left pattern 1124, 1126), detailed description thereof will be omitted.

The right transmission line 1330 includes a first right pattern 1332 and a second right pattern 1334 and is connected to the main wiring 1312 at a predetermined interval from the main wiring 1312 and the branch wiring 1314, And the branch wirings 1314 from the other side. Since the first right pattern 1332 and the second right pattern 1334 are similar to the first right pattern 1132 and the second right pattern 1134 described in FIG. 3, detailed description will be omitted.

The left routing wiring 1340 includes a first left routing wiring 1340, a second left routing wiring 1340 and a third left routing wiring 1340. Since the left routing wiring 1340 is the same as the left routing wiring 1140 described in FIG. 3, detailed description is omitted. In this embodiment, the left routing wiring 1340 has a linear shape, but may have a saw-tooth shape.

The right routing wiring 1350 includes a first right routing wiring 1350 and a second right routing wiring 1350. Since the right routing wiring 1350 is the same as the right routing wiring 1150 described in FIG. 3, detailed description is omitted. In this embodiment, the right routing wiring 1350 has a linear shape, but it may have a saw-tooth shape. If the left routing wiring 1340 and the right routing wiring 1350 have a sawtooth shape, it is possible to prevent a moiré phenomenon occurring in an image of the display panel disposed under the touch panel.

7 is a plan view schematically illustrating a modification of the touch sensing line according to an embodiment of the present invention. In particular, an example is shown in which the main wirings extend in a linear shape and the branch wirings are branched at an obtuse angle in the main wirings.

7, the touch sensing line 1400 includes a receive line 1410, a left transmit line 1420 disposed in the left region of the receive line 1410 from the observer's point of view, A left routing wiring 1440 connected to the right transmission line 1430, a left transmission line 1420 and a right routing wiring 1450 connected to the right transmission line 1430.

The reception line 1410 includes a main wiring 1412 extending in the first direction D1 and a plurality of branch wirings 1414 branched from the main wiring 1412 in the second direction D2 with a certain angle do. The width of the main wiring 1412 and the width of the branch wiring 1414 may be the same. In this embodiment, the branch wirings 1414 are branched at the obtuse angle or acute angle in the main wirings 1412. The branch wiring 1414 branched at the obtuse angle and the branch wiring 1414 branched at the acute angle in the main wiring 1412 may exist in one touch sensing line. Touch sensing lines having an obtuse-diverging branch wiring 1414 and a branch wiring 1414 diverging at an acute angle may also be present in the touch panel.

The left transmission line 1420 includes a first left pattern 1422, a second left pattern 1424 and a third left pattern 1426 and is spaced apart from the main wiring 1412 and the branch wirings 1414 by a predetermined distance So as to surround the main wirings 1412 and the branch wirings 1414 from one side. In this embodiment, the branch wirings are formed in the first left pattern 1422, the second left pattern 1424, and the third left pattern 1426, respectively, since they branch at an obtuse angle or an acute angle in the main wiring 1412, The groove shape surrounding the wiring lines 1414 also has a shape inclined from the observer's viewpoint. The spacing distance between the left transmission line 1420 and the main wiring 1412 and the branch wiring 1414 can be uniform.

Specifically, the first left pattern 1422, the second left pattern 1424, and the third left pattern 1426 are formed in a tooth shape to cover the main wiring 1412 and the branch wirings 1414. Each of the first left pattern 1422 and the third left pattern 1426 includes three tooth members. The width of one tooth member disposed at the center portion is twice the width of each of the tooth members disposed at the outer portion.

The second left pattern 1424 includes five tooth members. The widths of the three tooth members disposed at the center are equal to each other, and the widths of the two tooth members disposed at the outer frame portion are equal to each other. The width of the tooth member disposed at the outer portion is half the width of the tooth member disposed at the center portion.

On the other hand, the right transmission line 1430 includes a first right pattern 1432 and a second right pattern 1434, and the main wiring 1412 is spaced apart from the main wiring 1412 and the branch wiring 1414, And the branch wirings 1414 from the other side. The branch wiring 1414 is formed in the first right pattern 1432 and the second right pattern 1434 so that the groove wiring 1414 surrounds the branch wiring 1414. In this embodiment, It also has an oblique shape from the observer's point of view. The spacing between the right transmission line 1430 and the main wiring 1412 and the branch wiring 1414 can be uniform.

Specifically, the first right pattern 1432 and the second right pattern 1434 are formed in a tooth shape to cover the main wiring 1412 and the branch wirings 1414.

Each of the first right pattern 1432 and the second right pattern 1434 includes five tooth members. The widths of the three tooth members disposed at the center are equal to each other, and the widths of the two tooth members disposed at the outer frame portion are equal to each other. The width of the tooth member disposed at the outer portion is half the width of the tooth member disposed at the center portion.

The left routing wiring 1440 includes a first left routing wiring 1440, a second left routing wiring 1440, and a third left routing wiring 1440. Since the left routing wiring 1440 is the same as the left routing wiring 1140 described in FIG. 3, detailed description is omitted.

The right routing wiring 1450 includes a first right routing wiring 1450 and a second right routing wiring 1450. Since the right routing wiring 1450 is the same as the right routing wiring 1150 described in FIG. 3, detailed description is omitted.

8 is a plan view schematically illustrating a modification of the touch sensing line according to an embodiment of the present invention. In particular, an example is shown in which the main wirings extend in a zigzag shape, and the branch wirings are branched at the bent portions of the main wirings.

8, the touch sensing line 1500 includes a receive line 1510, a left transmit line 1520 disposed in the left region of the receive line 1510 from the observer's point of view, A right routing line 1530 connected to the right transmission line 1530, a left transmission line 1520 and a right routing line 1550 connected to the right transmission line 1530.

The reception line 1510 includes main wirings 1512 extending in a zigzag manner in the first direction D1 and a plurality of branch wirings 1514 branched along the second direction D2 at inflection portions of the main wirings 1512. [ ). The width of the main wiring 1512 and the width of the branch wiring 1514 may be the same.

The left transmission line 1520 includes a first left pattern 1522, a second left pattern 1524 and a third left pattern 1526 and is spaced apart from the main wirings 1512 and the branch wirings 1514 by a predetermined distance So as to surround the main wirings 1512 and the branch wirings 1514 from one side. The spacing between the left transmission line 1520 and the main wiring 1512 and the branch wiring 1514 can be uniform.

The right transmission line 1530 includes a first right pattern 1532 and a second right pattern 1534. The right transmission line 1530 includes main wiring 1512 and branch wiring 1514, And the branch wirings 1514 from the other side. The spacing between the right transmission line 1530 and the main wiring 1512 and the branch wiring 1514 can be uniform.

The left routing wiring 1540 includes a first left routing wiring 1540, a second left routing wiring 1540, and a third left routing wiring 1540. Since the left routing wiring 1540 is the same as the left routing wiring 1140 described in FIG. 3, detailed description is omitted.

The right routing wiring 1550 includes a first right routing wiring 1550 and a second right routing wiring 1550. Since the right routing wiring 1550 is the same as the right routing wiring 1150 described in FIG. 3, detailed description is omitted.

In this embodiment, although the widths of the left patterns are shown to be equal to each other, the width may gradually increase as the distance from the left transmission pad member increases. Accordingly, the distance between the left patterns and the left routing wiring can be uniform. Also, although the widths of the right patterns are shown to be equal to each other, the width may gradually increase as the distance from the right transmission pad member increases. Thus, the distance between the right patterns and the right routing wiring can be uniform.

9 is a plan view schematically illustrating a modification of the touch sensing line according to an embodiment of the present invention. In particular, an example is shown in which the main wirings extend in a wavy shape, and the branch wirings are branched at the bent portions of the main wirings.

9, the touch sensing line 1600 includes a receive line 1610, a left transmit line 1620 disposed in the left region of the receive line 1610 from the viewer's point of view, A left routing wiring 1640 connected to the left transmission line 1620 and a right routing wiring 1650 connected to the right transmission line 1630. The right transmission line 1630 is connected to the right transmission line 1630,

The reception line 1610 includes a main wiring 1612 extending in a first direction D1 in a wavy form and a plurality of branch wirings 1614 branched from the main wiring 1612. [ The width of the main wiring 1612 and the width of the branch wiring 1614 may be the same. In this embodiment, the branch wirings 1614 are shown to be branched at the mid-point between the top portion and the bottom portion of the wavy shape. However, the branch wirings 1614 are formed in the wavy- And a bottom region.

The left transmission line 1620 includes a first left pattern 1622, a second left pattern 1624 and a third left pattern 1626. The left transmission line 1620 is connected to the main wiring 1612 and the branch wirings 1614 And is arranged in a shape to surround the main wiring 1612 and the branch wirings 1614 from one side. In the present embodiment, each of the first left pattern 1622, the second left pattern 1624, and the third left pattern 1626 has a wavy shape. The spacing between the left transmission line 1620 and the main wiring 1612 and the branch wiring 1614 may be uniform.

The right transmission line 1630 includes a first right pattern 1632 and a second right pattern 1634 and is spaced apart from the main wiring 1612 and the branch wirings 1614 by a predetermined distance, The wiring 1612 and the branch wirings 1614 from the other side. In this embodiment, each of the first right pattern 1632 and the second right pattern 1634 has a wavy shape. The spacing between the right transmission line 1630 and the main wiring 1612 and the branch wiring 1614 can be uniform.

The left routing wiring 1640 includes a first left routing wiring 1640, a second left routing wiring 1640 and a third left routing wiring 1640. The left routing wiring 1640 includes a first left routing wiring 1640, Line 1610 and is connected to the left transmission line 1620. The left- The first left routing wiring 1640 is connected to the first left pattern 1622 and extends to the peripheral region PA in parallel with the longitudinal direction of the main wiring 1612. The second left routing wiring 1640 is connected to the second left pattern 1624 and extends to the peripheral region PA in parallel with the longitudinal direction of the main wiring 1612. The third left routing wiring 1640 is connected to the third left pattern 1626 and extends to the peripheral region PA in parallel with the longitudinal direction of the main wiring 1612. In the present embodiment, each of the first left routing wiring 1640, the second left routing wiring 1640, and the third left routing wiring 1640 has a wavy shape.

The right routing wiring 1650 includes a first right routing wiring 1650 and a second right routing wiring 1650 and is disposed in an area opposite to the reception line 1610 with respect to the right transmission line 1630 And is connected to the right transmission line 1630. The first right routing wiring 1650 is connected to the first right pattern 1632 and extends to the peripheral region PA in parallel with the longitudinal direction of the main wiring 1612. The second right routing wiring 1650 is connected to the second right pattern 1634 and extends to the peripheral region PA in parallel with the longitudinal direction of the main wiring 1612. In this embodiment, each of the first right-side routing wiring 1650 and the second right-side routing wiring 1650 has a wavy shape.

In this embodiment, although the widths of the left patterns are shown to be equal to each other, the width may gradually increase as the distance from the left transmission pad member increases. Accordingly, the distance between the left patterns and the left routing wiring can be uniform. Also, although the widths of the right patterns are shown to be equal to each other, the width may gradually increase as the distance from the right transmission pad member increases. Thus, the distance between the right patterns and the right routing wiring can be uniform.

10 is a plan view schematically illustrating a modification of the touch sensing line according to an embodiment of the present invention. Particularly, an example is shown in which the reception lines are formed in an inverted shape and two branch wirings are branched in different directions at the same portion of the main wirings.

10, the touch sensing line 1700 includes a receive line 1710, a left transmit line 1720 disposed in the left region of the receive line 1710 from the observer's point of view, A left routing wiring 1740 connected to the right transmission line 1730, a left transmission line 1720 and a right routing wiring 1750 connected to the right transmission line 1730.

The reception line 1710 includes a main wiring 1712 extending in the first direction D1 and a plurality of branch wirings 1714 branched from the main wiring 1712. [ The width of the main wiring 1712 and the width of the branch wiring 1714 may be the same. In this embodiment, the two branch wirings 1714 branch in different directions at the same portion of the main wirings. Further, the portions where the branch wirings are branched in the main wiring are arranged in a zigzag shape. Accordingly, the reception line 1710 is out of alignment.

The left transmission line 1720 includes a first left pattern 1722, a second left pattern 1724 and a third left pattern 1726 and is spaced apart from the main wiring 1712 and the branch wirings 1714 by a predetermined distance So as to surround the main wirings 1712 and the branch wirings 1714 from one side. The spacing distance between the left transmission line 1720 and the main wiring 1712 and the branch wiring 1714 can be uniform.

The right transmission line 1730 includes a first right pattern 1732 and a second right pattern 1734. The right transmission line 1730 includes main wiring 1712 and main wiring 1712 spaced apart from main wiring 1712 and branch wiring 1714, And the branch wirings 1714 from the other side. The spacing between the right transmission line 1730 and the main wiring 1712 and the branch wiring 1714 can be uniform.

The left routing wiring 1740 includes a first left routing wiring 1740, a second left routing wiring 1740, and a third left routing wiring 1740. Since the left routing wiring 1740 is the same as the left routing wiring 1140 described in FIG. 3, detailed description will be omitted.

The right routing wiring 1750 includes a first right routing wiring 1750 and a second right routing wiring 1750. Since the right routing wiring 1750 is the same as the right routing wiring 1150 described in FIG. 3, detailed description is omitted.

11 is a plan view schematically illustrating a modification of the touch sensing line according to an embodiment of the present invention. In particular, an example is shown in which the reception lines are formed in opposing shapes, and the branch wirings are branched into a V-shape.

11, the touch sensing line 1800 includes a receive line 1810, a left transmit line 1820 disposed in the left region of the receive line 1810 from the observer's point of view, A left routing wiring 1840 connected to the left transmission line 1820 and a right routing wiring 1850 connected to the right transmission line 1830.

The reception line 1810 includes a main wiring 1812 extending in the first direction D1 and a plurality of branch wirings 1814 branched from the main wiring 1812. [ The width of the main wiring 1812 and the width of the branch wiring 1814 may be the same. In this embodiment, the receive line 1810 is disposed in opposing shapes. That is, one of the branch wirings 1814 branches toward the left transmission line 1820 and the other branches toward the right transmission line 1830. Accordingly, the branch wirings 1814 can be arranged in a V-shape.

The left transmission line 1820 includes a first left pattern 1822, a second left pattern 1824 and a third left pattern 1826 and is spaced apart from the main wiring 1812 and the branch wirings 1814 by a predetermined distance So as to surround the main wirings 1812 and the branch wirings 1814 from one side. The spacing distance between the left transmission line 1820 and the main wiring 1812 and the branch wiring 1814 can be uniform.

On the other hand, the right transmission line 1830 includes a first right pattern 1832 and a second right pattern 1834, and the main wiring 1812 is spaced apart from the main wiring 1812 and the branch wiring 1814 by a predetermined distance, And the branch wirings 1814 from the other side. The spacing between the right transmission line 1830 and the main wiring 1812 and the branch wiring 1814 can be uniform.

The left routing wiring 1840 includes a first left routing wiring 1840, a second left routing wiring 1840, and a third left routing wiring 1840. Since the left routing wiring 1840 is the same as the left routing wiring 1140 described in FIG. 3, detailed description will be omitted.

The right routing wiring 1850 includes a first right routing wiring 1850 and a second right routing wiring 1850. Since the right routing wiring 1850 is the same as the right routing wiring 1150 described in FIG. 3, detailed description is omitted.

In this embodiment, the branch wirings 1814 are arranged in a V-shape, but the branch wirings 1814 may be in an inverted-V shape (or A-shaped).

In the above embodiments, the widths of the left routing interconnections and the right routing interconnections corresponding to the transmission routing interconnections are uniform. However, as shown in FIG. 12 to be described later, the widths of the left routing wirings and the right routing wirings may increase as they are further away from the reception line.

12 is a plan view schematically illustrating a modification of the touch sensing line according to an embodiment of the present invention. In particular, a thicker example is shown as the width of the transmission routing wires is further away from the receive line.

12, the touch sensing line 1900 includes a reception line 1110, a left transmission line 1120 disposed in the left area of the reception line 1110 from the observer's point of view, A left routing wiring 1940 connected to the left transmission line 1120 and a right routing wiring 1950 connected to the right transmission line 1130.

The reception line 1110 is the same as the reception line 1110 described in FIG. 3, and therefore, the same reference numerals are assigned and detailed descriptions are omitted.

The left transmission line 1120 includes a first left pattern 1121, a second left pattern 1122, and an nth left pattern 112n. The shapes and arrangements of the left patterns 1121, 1122 and 112n shown in FIG. 12 are the same as those of the first through third left patterns 1122, 1124 and 1126 described in FIG. 3 The detailed description thereof will be omitted.

The right transmission line 1130 includes a first right pattern 1131, a second right pattern 1132, and an (n-1) right pattern 113n-1. The shapes and arrangements of the right patterns 1131, 1132, 113, and 113n-1 shown in FIG. 12 are the same as those of the first and second right patterns 1132 and 1134 described in FIG. The detailed description thereof will be omitted.

The left routing wiring 1940 includes a first left routing wiring 1941, a second left routing wiring 1942, a third left routing wiring 1943, an nth left routing wiring 194n, And is connected to the left transmission line 1120 by being disposed in the opposite area of the reception line 1110 with respect to the line 1120. [ The first left routing wiring 1941 is connected to the first left pattern 1122 and extends to the peripheral region PA in parallel with the longitudinal direction of the main wiring 1112. The second left routing wiring 1942 is connected to the second left pattern 1124 and extends to the peripheral region PA in parallel with the longitudinal direction of the main wiring 1112. [ The nth left routing wiring 194n is connected to the nth left pattern 1126 and extends to the peripheral area PA in parallel with the longitudinal direction of the main wiring 1112. [ In this embodiment, the linewidths of the first to nth left routing wirings 1941, 1942, 1943, 19, and 194n increase as the distance from the left transmission line 1120 increases. Thus, the transmission characteristics of signals transmitted to the left pattern disposed in the region far from the pad portion can be improved.

The right routing wiring 1950 includes the first right routing wiring 1951, the second right routing wiring 1952, the (n-1) th right routing wiring 194n-1, and the right transmission line 1130 And is connected to the right transmission line 1130. In the present embodiment, The first right routing wiring 1951 is connected to the first right pattern 1132 and extends to the peripheral area PA in parallel with the longitudinal direction of the main wiring 1112. [ The second right routing wiring 1952 is connected to the second right pattern 1134 and extends to the peripheral region PA in parallel with the longitudinal direction of the main wiring 1112. [ In this manner, the (n-1) th right-hand routing wiring 195n-1 is connected to the second right pattern 1134 and extends to the peripheral area PA in parallel with the longitudinal direction of the main wiring 1112. [ In this embodiment, the linewidths of the first to (n-1) -th right-side routing wirings 1951, 1952,?, 195n-1 increase as the distance from the right transmission line 1130 increases. Thus, it is possible to improve the transmission characteristics of the signal transmitted to the right pattern disposed in the region far from the pad portion.

13 is a schematic view for explaining a touch sensing apparatus according to an embodiment of the present invention.

Referring to FIG. 13, a touch sensing apparatus according to an embodiment of the present invention includes a touch panel 10, a first capacitance sensing circuit 200, and a second capacitance sensing circuit 300. In addition, the touch sensing apparatus may further include a central processing unit (CPU) 80 and a timing control unit 90. The first and second capacitance sensing circuits 200 and 300, the central processing unit (CPU) 80, and the timing controller 90 may be implemented on one chip or on different chips.

The touch panel 10 has a touch screen area and a touch button area. For example, the touch panel 10 may be disposed between a display panel (not shown) and a transparent window (not shown). As another example, the touch panel 10 may be formed on the back surface of the transparent window and disposed on the display panel. As another example, the touch panel 10 may be formed on the upper glass of the display panel.

A plurality of touch sensing lines extending in the X-axis direction and arranged in the Y-axis direction are disposed in the touch screen area. Each of the touch sensing lines includes a plurality of reception lines, a plurality of left transmission lines, a plurality of right transmission lines, a plurality of left routing wirings, and a plurality of right routing wirings. The description of the above-described touch sensing lines has been described in the above-mentioned embodiments and will be omitted. The reception lines, the left transmission lines, the right transmission lines, the left routing wirings, and the right routing wirings may be formed in different layers or in the same layer. In the present embodiment, the left transmission lines and the right transmission lines serve to transmit a specific signal, for example, a transmission signal of a square wave, and the reception lines are connected to the left transmission lines and the right transmission line And detects capacitance due to a signal induced from the electrodes.

A plurality of touch buttons TB1 and TB2 and sensing lines connected to the touch buttons TB1 and TB2 are disposed in the touch button area. In Fig. 13, the left touch button TB1 corresponds to the feedback to the groove, and the right touch button TB2 corresponds to the feedback to the previous screen.

The connection between the touch panel 10 and the first capacitance sensing circuit 200 and the second capacitance sensing circuit 300 may be accomplished through a circuit board.

14 is a schematic view for explaining the circuit board shown in Fig.

13 and 14, the wiring connecting member WCM has a side connected electrically to the touch panel 10 and a side connected to a circuit board (not shown) on which the touch sensing chip is mounted. In the touch sensing chip, a first capacitance sensing circuit 200, a second capacitance sensing circuit 300, and the like may be integrated.

The wiring connecting member WCM may be a flexible printed circuit board (FPCB), and another flexible circuit board may be used.

The wiring connecting member WCM may be disposed at one end of the touch sensing area 140. The wiring connecting member WCM may be electrically connected to the pad portion formed on the touch panel 10. [

The wiring connecting member WCM may be attached to one surface of the touch panel 10. [ For example, the wiring connecting member WCM may be attached to one surface of the touch panel 10 through processes such as ACF (Anisotropic Conductive Film), ACP (Anisotropic Conductive Paste), and ACA (Anisotropic Conductive Adhesive) In the bonding process, an ultrasonic bonding process can be used. In some embodiments, the wiring connecting member WCM is about 70? To 150? By using ACF or the like.

The wiring connecting member WCM may be provided with wiring for receiving the sensing signal from the receiving line and transmitting the driving signal to the transmitting line in advance. Regarding the wiring of the wiring connecting member WCM, each of the wiring connecting members WCM includes a first layer having a plurality of wirings, an insulating layer covering the first layer, a second layer having a plurality of wirings formed on the insulating layer, And the wirings of the first layer and the wirings of the second layer may be electrically connected through via holes.

In the wiring connecting member WCM, the wirings formed in the first layer may be electrically connected to the pad portion of the touch panel 10. [ In the wiring connection member WCM, the wirings formed in the second layer may be electrically connected to a circuit substrate on which the touch sensing chip or the touch sensing chip is mounted. In the touch sensing chip, a first capacitance sensing circuit 200, a second capacitance sensing circuit 300, and the like are integrated.

Generally, a printing process such as sputtering, etching fixation, or silk screen, which is a process for forming wiring, has a lower yield than processes such as ACF, ACP and ACA for attaching a circuit board. Therefore, by attaching the wiring connecting member WCM, on which the wiring is printed in advance, to the touch panel 10 instead of directly printing the wiring on the bezel area of the touch panel, the process of the touch sensing device can be simplified, have.

In addition, since the wiring connecting member WCM is replaced with a wiring directly formed on the touch panel, the step of forming the insulating layer for protecting the wiring on the touch panel can be omitted, so that the manufacturing process of the touch sensing device can be simplified have.

The wiring connecting member WCM may be a flexible circuit board. Therefore, if the wiring connecting member WCM printed on the wiring is bonded to the touch panel and the wiring connecting member WCM is used by folding the wiring connecting member WCM toward the rear side of the touch panel, the overall area The width of the bezel can be reduced, thereby reducing the overall size of the substrate, or reducing the width of the bezel in the same size substrate, enabling image display on a larger screen.

In the present embodiment, the wiring connecting member WCM has described that the touch panel 10 on which the touch sensing lines are formed is electrically connected to the circuit substrate on which the touch sensing chip is mounted. However, the touch sensing chip may be directly mounted or mounted on the wiring connecting member WCM.

In the following description, the left transmission line and the right transmission line are collectively referred to as transmission lines.

13, the first capacitance sensing circuit 200 includes a current mirror-based charge integration circuit and is connected to the transmission lines and the reception lines disposed in the touch screen area, And detects the difference between the capacitances generated between the reception line and the reception line to detect whether or not it is touched. The first capacitance sensing circuit 200 includes a transmission circuit 210 and a reception circuit 220.

The transmission circuit unit 210 includes a transmitter 212 and a transmission switch 214. The transmission circuit 210 transmits the transmission signal to the touch panel 10 in response to the first switching control signal S1 provided from the timing controller 90 Lines in succession. In this embodiment, the transmitter 212 outputs a square wave transmission signal to the transmission lines of the touch panel 10. [ The intensity of the transmission signal output from the transmitter 212 may be weak. If the intensity of the transmitted signal is weak, it may be difficult to process the signal in the receiving circuit 220. Therefore, the output voltage of the transmitter 212 may be increased to increase the transmission energy, thereby increasing the amount of energy induced in the reception line. The transmission circuit unit 210 may further include a power booster (not shown) such as a charge pump to increase the voltage of the transmission signal.

The receiving circuit unit 220 includes a receiving switch 222, a resistance unit 224, a first charge integrator circuit 226 and an analog-to-digital converter 228, And detects a difference in electrostatic capacitance generated between the lines from the reception line of the touch panel 10. That is, the first capacitance sensing circuit 200 operates in a mutual-capacitance mode to detect a touch. The mutual-capacitance mode will be described as follows. In the touch sensing through the mutual-capacitance mode, a specific signal is applied to a transmission line arranged in a horizontal axis, and a capacitance component due to a signal induced through a reception line arranged in a vertical axis is sensed to detect whether a touch is generated will be.

The reception switch 222 connects one of the reception lines of the touch panel 10 and the variable resistance generation unit 224 to each other and outputs the reception signal RX transmitted through the reception line to the variable resistance generation unit 224. [ .

The variable resistance generating unit 224 lowers the potential of the reception signal RX input through the reception switch 222 and provides it to the first charge integrating circuit 226. [ The variable resistance generator 224 may include a variable resistor. In addition, the variable resistance generation section 224 may include a serial resistance.

The first charge integration circuit 226 may be configured based on a current mirror. The first charge integrating circuit 226 based on the current mirror integrates charges corresponding to the rising period and the falling period of the transmission signal of the square wave applied from the transmitting circuit 210, Detects the difference in capacitance generated between the lines to detect whether or not the touch is present. In the present embodiment, the receiving circuit unit 220 is provided with the receiving switch 222 to receive the receiving signal from the receiving line, but the receiving switch 222 may be omitted. At this time, a plurality of receiving circuit units are provided and connected to each of the receiving lines.

Since the variation width of the received signal (charge amount) detected due to the contact of the human body is very small, such as several tens of fF to several Pf, the charge integrator for accumulating the charge due to the received signal and amplifying the accumulated charge into voltage, : 226 are used in the receiving circuit unit 220. [ And an analog-to-digital converter (ADC) 228 for digitizing the value of the detected voltage for data processing.

The second capacitance sensing circuit 300 includes a sensing switch 310 and a first charge integrating circuit 320 and is connected to sensing lines connected to the respective button patterns TB1 and TB2 of the touch button region , The on / off state of the button patterns TB1 and TB2 through the sensing lines is checked to detect whether or not the touch pattern is touched. The sensing switch 310 connects the charge integration circuit to the sensing lines connected to the button pattern. The second charge integration circuit 320 may be configured based on a current mirror. The second charge integration circuit 320 detects the touch of the button pattern by detecting the capacitance of the button pattern. For example, when a user's human touch is generated, the capacitance of the button pattern is changed and contact is detected through comparison with the capacitance before contact. That is, the second capacitance sensing circuit 300 operates in a self-capacitance mode to sense a touch. The self-capacitance mode will be described as follows. In the touch sensing through the self-capacitance mode, a sensing signal is applied independently to the sensing patterns, and at the same time, the amount of change of the sensing signal itself deformed from the touch action of the user is measured using the same signal line, To detect.

According to the present invention, when a capacitance sensing circuit including a current mirror-based charge integration circuit is employed in a touch sensing device, the capacitance sensing circuit is operated in a combined mode driven in a self-capacitance mode and a mutual-capacitance mode To illustrate, a variable resistance generator is added to the capacitive sensing circuit that performs the mutual-capacitance mode. However, a mutual-capacitance mode may be implemented without adding a separate variable resistance generator.

That is, W / L (W is the channel width and L is the channel length) of the transistor provided at the input terminal of the first charge integrating circuit 226 included in the first capacitance sensing circuit 200 is connected to the second capacitance integration circuit A mutual capacitance mode can be realized by designing the second charge integration circuit 320 to be smaller than the W / L of the transistor provided at the input terminal of the second charge integration circuit 320 included in the charge integration circuit 300.

As described above, according to the touch sensing device, the transmission lines and the reception lines, which are orthogonal to each other, are insulated from each other and the capacitance between them is formed by the insulating material in the overlapped portions, The energy of the transmission line of a certain level is induced to the reception line by the electric energy field. At this time, when a touch is generated by the user, a transmission signal applied to the electrode lines corresponding to the points where the touch is generated and a reception signal induced in the reception lines are formed by capacitive (Capacitance) and a change of a static / electric energy field occur, and a change in the amount of energy induced in the receiving line occurs.

The capacitance sensing circuit according to the present invention converts the electrical energy detected from the reception line, that is, the amount of charge (or the amount of change in capacitance) into a unit of voltage, and uses the difference in voltage between when the touch is generated and when it is not, It is determined whether or not the user touches. The multi-points can be easily distinguished by measuring the amount of change in charge amount due to such a change in capacitance and measuring the change amount of all the horizontal axes with respect to the independent vertical axis, and arranging the measurement values two-dimensionally in the vertical axis and the horizontal axis.

FIG. 15 is an equivalent circuit diagram schematically illustrating an example of the electrostatic capacitance sensing circuit for a touch panel of the mutual-capacitance type shown in FIG. 16 is a waveform diagram for explaining the operation of the capacitance sensing circuit for a touch panel of Fig.

15 and 16, the transmission circuit 210 connected to the touch panel 10 (shown in FIG. 13) includes a first switch SW0, a second switch SW1, a first inverter IN1, 2 inverter IN2 and provides a square wave transmission signal TX to the touch panel 10. [ For convenience of explanation, a transmitter 212 (shown in FIG. 13) provided in the transmission circuit unit 210 and outputting a square wave transmission signal is represented by a first switch SW0 and a second switch SW1. That is, when the first switch SW0 is turned on, the power supply voltage VDD of high level is outputted, and when the second switch SW1 is turned on, the ground voltage GND of low level is outputted. Therefore, a transmission signal of a square wave having a high level and a low level can be output.

The receiving circuit unit 220 includes an upper switch SW11, a lower switch SW12, an upper current mirror unit UCM, a lower current mirror unit LCM, an output switching unit SW13, an output capacitor C1, (SW14).

In response to the first and second transmission switch control signals S0 and S1 and the first and second integration control signals CP and CN in each cycle of the transmission signal TX having a square wave form, The operation of the capacitance sensing circuit at the rising edge of the TX and the operation of the capacitance sensing circuit at the falling edge are different. In this embodiment, the first transmission switch control signal S0 and the first integration control signal CP are in phase with each other.

That is, in the rising edge of the transmission signal TX, a first current path is formed along the first switch SW0, the touch panel 10, the lower switch SW12, and the lower current mirror portion LCM, 1 current path is mirrored to the NMOSs disposed on the right side of the lower current mirror portion LCM, a second current path is formed along the upper current mirror portion UCM and the lower current mirror portion LCM. The current flowing along the second current path is mirrored to the PMOSs disposed on the right side of the upper current mirror portion UCM to form a third current path along the upper current mirror portion UCM and the output switching portion SW13 . The charge corresponding to the current according to the third current path is charged to the output capacitor C1 and then output through the output terminal. Here, the received signal RX is discharged through the lower current mirror portion LCM, and thus has a voltage level that decreases with time.

On the other hand, at the falling edge of the transmission signal TX, a first current path is formed along the upper current mirror portion UCM, the upper switch SW11, the touch panel 10, and the second switch SW1. The current flowing through the left PMOSs of the upper current mirror portion UCM is mirrored to the right PMOSs of the upper current mirror portion UCM to form the second current path. The charge corresponding to the current according to the second current path is charged to the output capacitor C1 and then output through the output terminal. Here, the received signal RX has a voltage level that increases with time since the charge is continuously supplied from the upper current mirror unit UCM.

Thus, by being able to integrate the charge received at each of the rising and falling edges of the transmit signal TX, it is possible to integrate twice the charge energy compared to the technique of integrating only the charge received at the rising edge.

On the other hand, when a touch is generated during a rising edge interval or a falling edge interval of the transmission signal TX, the electrostatic capacitance C0 formed on the touch panel 10 decreases. That is, since the waveform of the transmission signal TX and the waveform of the reception signal RX are opposite to each other, the capacitance of the capacitor caused by the contact of the human body reduces the capacitance formed on the touch panel 10.

On the other hand, according to the present embodiment, the discharge path is constituted by the reception signal RX corresponding to the charging of the transmission signal TX, or the reception signal RX is charged together in response to the charging of the transmission signal TX, The sensing speed of the capacitance can be increased by increasing or decreasing the amount of charge transferred to both ends of the capacitor C0 formed on the touch panel 10 in a short period of time. That is, when one end of the capacitor is charged through the other end of the capacitor connected to the ground electrode, the charge is rapidly charged at the initial stage of charging, but the charging speed is slowed after a predetermined time has elapsed. However, when one end and the other end of the capacitor are respectively used as the charging terminal and the discharging terminal, and the one end and the other end of the capacitor are respectively used as the charging terminal and the charging terminal, the rate at which electric charges flow during charging and discharging operations is accelerated. Therefore, according to the present embodiment, it is possible to increase the sensing speed of the capacitance.

Further, according to the present invention, the configuration of the charge integration circuit for integrating both the rising period and the falling period of the transmission signal is constituted by a current mirror instead of the operational amplifier (OP-AMP), thereby simplifying the circuit configuration. In addition, it is possible to precisely maintain the voltage value in the change component of the output voltage after integration according to integration in both the rising period and the falling period of the transmission signal.

17 is a schematic view for explaining a touch sensing apparatus according to another embodiment of the present invention.

Referring to FIG. 17, a touch sensing apparatus according to another embodiment of the present invention includes a touch panel 10 and a capacitance sensing circuit 600.

The touch panel 10 has a touch screen area. A plurality of transmission lines extending in the X-axis direction and arranged in the Y-axis direction and a plurality of reception lines extending in the Y-axis direction and arranged in the X-axis direction are arranged in the touch screen area. The transmission lines and the reception lines may be formed on different layers or on the same layer. In the present embodiment, the transmission lines serve to transmit a specific signal, for example, a transmission signal of a square wave, and the reception lines sense a capacitance due to a signal induced from the transmission lines .

The connection between the touch panel 10 and the capacitance sensing circuit 600 can be made via the wiring connection member WCM. The wiring connection member WCM has been described with reference to FIG. 14, and therefore will not be described.

The electrostatic capacitance sensing circuit 600 includes a current mirror-based charge integration circuit and is connected to the transmission lines and the reception lines arranged in the touch screen area. The electrostatic capacitance sensing circuit 600 operates in a self-capacitance mode at the beginning of the touch operation, And operates in the mutual-capacitance mode as the touch is sensed.

The capacitance sensing circuit 600 includes a transmission circuit portion 610 and a reception circuit portion 620. The transmitting circuit portion 610 and the receiving circuit portion 620 may be formed on one chip or on different chips. Meanwhile, the transmission circuit unit 610 and the reception circuit unit 620 may be integrated on the touch panel 10.

The transmission circuit unit 610 includes a transmitter 612 and a transmission switch 614 and successively applies a transmission signal to the transmission lines of the touch panel 10 to the transmission line. In this embodiment, the transmitter 612 outputs a square wave transmission signal to the transmission lines of the touch panel 10. The intensity of the transmission signal output from the transmitter 612 may be weak. If the intensity of the transmitted signal is weak, it may be difficult to process the signal in the receiving circuit unit 620. Therefore, the output voltage of the transmitter 612 may be increased to increase the transmission energy, thereby increasing the amount of energy induced in the reception line. The transmission circuit unit 210 may further include a power booster (not shown) such as a charge pump to increase the voltage of the transmission signal.

The receiving circuit portion 620 includes a receiving switch 622, a receiving line coupler 624, a charge integrating circuit 626 and an analog-to-digital converter 628 and operates in a self- And operates in the mutual-capacitance mode as the touch is sensed.

The reception switch 622 connects any one of the reception lines of the touch panel 10 and the charge integration circuit 626 to provide the reception signal RX transmitted through the reception line to the charge integration circuit 626 do.

The receive line coupler 624 couples the receive lines to one signal line and provides the summed voltage (Vsum) flowing through the coupled signal line to the analog to digital converter 628.

The charge integration circuit 626 may be configured based on a current mirror. The charge integration circuit 626 integrates the charges corresponding to the rising period and the falling period of the square wave transmission signal, respectively, and provides the integrated voltage Vint to the analog-to-digital converter 628. The analog-to-digital converter 628 converts the integral voltage Vint into a digital signal.

In accordance with the present invention, the receive lines coupler 624 couples the receive lines to one signal line and is connected to the analog-to-digital converter 628 at the beginning of the touch operation. At this time, the touch sensing apparatus is operated in the self-capacitance mode to detect whether it is touched. As the touch is detected, the touch sensing apparatus operates in a mutual-capacitance mode, and detects a difference in capacitance generated between the transmission line and the reception line from the reception line of the touch panel 10. That is, the capacitance sensing circuit 600 operates in a mutual-capacitance mode to detect a touch. Accordingly, the self-capacitance mode is operated in a short sensing period at the beginning of the touch operation. When the touch is sensed, the touch sensing operation is performed in the mutual-capacitance mode.

The capacitance sensing circuit 600 may further include a timing generating section 90 and a central processing section 80.

The timing generator 90 provides the first timing signal S1 to the transmission switch 614 to control the output path of the transmission signal TX and provides the second timing signal S2 to the reception switch 622 And controls the input path of the received signal RX and provides the third timing signal S3 to the receive line coupler 624 to control whether the received signal RX is coupled. The third timing signal S3 may be output at the beginning of the touch operation.

The central processing unit (CPU) 80 detects touch coordinates based on the digitally converted integral voltage Vint provided from the analog-to-digital converter 628. [

The timing generating unit 90 and the central processing unit 80 may be formed on one chip or on different chips. Meanwhile, the timing generating unit 90 and the central processing unit 80 may be mounted on the touch panel 10 or may be integrated.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. You will understand.

10: touch panel 20: circuit board
30: transparent window 40: display panel
200: first capacitance sensing circuit 300: second capacitance sensing circuit
WCM: wiring connecting member 210, 610:
220, 620: receiving circuit section 222: receiving switch
224: Variable resistance generator 600: Capacitive sensing circuit
612: Transmitter 614: Transmission switch
622 Receive switch 624 Receive line coupler
626: Charge integration circuit 628: Analog-to-digital converter
1100, 1200, 1300, 1400, 1500, 1600, 1700, 1800, 1900: Touch sensing line
1110, 1210, 1310, 1410, 1510, 1610, 1710, 1810:
1120, 1220, 1320, 1420, 1520, 1620, 1720, 1820:
1130, 1230, 1330, 1430, 1530, 1630, 1730, 1830:
1140, 1240, 1340, 1440, 1540, 1640, 1740, 1840, 1940: Left routing wiring
1150, 1250, 1350, 1450, 1550, 1650, 1750, 1850, 1950:
1112, 1212, 1312, 1412, 1512, 1612, 1712, 1812:
1114, 1214, 1314, 1414, 1514, 1614, 1714, 1814:
1122, 1222, 1322, 1422, 1522, 1622, 1722, 1822:
1124, 1224, 1324, 1424, 1524, 1624, 1724, 1824:
1126, 12266 1326, 1426, 1526, 1626, 1726, 1826: the third left pattern
1132, 1232, 1332, 1432, 1532, 1632, 1732, 1832:
1134, 1234, 1334, 1434, 1534, 1634, 1734, 1834: the second right pattern

Claims (19)

A reception line including a main line extending in a first direction and a plurality of branch lines branched from the main line;
A plurality of left transmission lines arranged to surround the main wiring and the branch wiring from one side; And
A plurality of branch lines arranged in a shape to surround the main line and the branch lines on the other side and arranged in a meshing fashion with the left transmission line on the basis of the reception line and arranged in a staggered arrangement with the left transmission line The right transmission lines of the touch panel. The touch panel of claim 1, wherein the reception lines are disposed in opposite shapes. The touch panel of claim 1, wherein the reception lines are arranged in an alternate shape. The touch panel according to claim 1, wherein the main wirings and the branch wirings are arranged in a cross shape, and the branch wirings are branched at a right angle in the main wirings. The touch panel according to claim 1, wherein the main wirings and the branch wirings are arranged in a cross shape, and the branch wirings are branched at the obtuse angle or acute angle in the main wirings. The touch panel according to claim 1, wherein the main wiring extends in a zigzag shape, and the branch wirings are branched at an inflection part of the main wiring. The touch panel of claim 1, further comprising a plurality of dummy patterns disposed between the reception line and the left transmission line. The touch panel of claim 1, further comprising a plurality of dummy patterns disposed between the receive line and the right transmit line. The method according to claim 1,
A reception routing wiring connected to the reception line and extending in the longitudinal direction of the main wiring;
A plurality of left routing wires connected to each of the left transmission lines and extending in the longitudinal direction of the main wiring; And
Further comprising a plurality of right routing wires connected to each of the right transmission lines and extending in the longitudinal direction of the main wiring. 10. The touch panel of claim 9, wherein a width of the left routing wires and a width of the right routing wires are thicker as the distance from the reception line increases. 10. The touch panel of claim 9, further comprising a plurality of dummy patterns disposed between the left transmission line and the left routing wiring closest to the left transmission line. 10. The touch panel of claim 9, further comprising a plurality of dummy patterns disposed between the right transmission line and the right routing wiring closest to the right transmission line. The touch panel according to claim 9, wherein the reception line, the left transmission line, the right transmission line, the left routing wiring, the right routing wiring, and the reception routing wiring are arranged on the same layer. The touch panel of claim 9, further comprising a ground line disposed in a peripheral area surrounding the touch sensing area. 15. The semiconductor device according to claim 14,
A main-ground wiring arranged in a shape surrounding the touch sensing area; And
And a sub-ground wiring disposed between the reception routing wiring and the transmission routing wiring adjacent to the reception routing wiring in the peripheral region. 15. The touch panel of claim 14, wherein each of the left routing wiring, the right routing wiring, and the receiving routing wiring extends to the peripheral region to define a pad member. A touch panel including a touch sensing area and a peripheral area surrounding the touch sensing area, the touch panel including a plurality of touch sensing lines in the touch sensing area; And
And a circuit board disposed at one end of the touch sensing area for sensing capacitance in the touch sensing lines,
A reception line including a main line extending in a first direction and a plurality of branch lines branched from the main line;
A plurality of left transmission lines arranged to surround the main wiring and the branch wiring from one side; And
And a plurality of right transmission lines arranged in a zigzag configuration with the left transmission line, the right transmission lines being arranged in a shape to surround the main wiring and the branch wiring from the other side, The touch sensing device comprising: The circuit board according to claim 17,
And a first charge integrating circuit based on a current mirror and connected to the reception line, the left transmission lines and the right transmission lines and the reception lines, respectively, and a capacitance generated between the left transmission line and the reception line A first capacitance sensing circuit for sensing a difference between capacitances generated between the right transmission line and the reception line to determine whether or not a touch is detected; And
A second charge integration circuit based on a current mirror is connected to a sensing line connected to a button pattern of a touch button area of the touch panel and on / off of the button pattern is checked on the sensing line to determine whether the touch is on or off And a second capacitive sensing circuit,
Wherein the resistance value corresponding to the input terminal of the first charge integration circuit is larger than the resistance value corresponding to the input terminal of the second charge integration circuit. The circuit board according to claim 17,
A current mirror circuit based on a current mirror and connected to the transmission lines and the reception lines arranged in the touch screen area of the touch panel and operating in a self-capacitance mode at the beginning of the touch operation, A capacitive sensing circuit operating in a mutual-capacitance mode as sensed,
Wherein the capacitance sensing circuit comprises:
A transmission circuit connected to each of the transmission lines, for applying a square wave transmission signal to the transmission line; And
And a receiving circuit connected to each of the receiving lines and receiving a square wave receiving signal through the receiving line,
The receiving circuit unit,
A reception switch for connecting any one of the reception lines and the charge integration circuit to each other to provide a reception signal transmitted through the reception line to the charge integration circuit; And
And a receive line coupler coupling the receive lines to one signal line and outputting a summed voltage flowing through the coupled signal line.

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