KR20180031883A - Touch sensor and display device including the same - Google Patents

Abstract

A touch sensor comprises: a plurality of first touch electrodes extending in a first direction; a plurality of second touch electrodes extending in the first direction; a plurality of third touch electrodes extending in a second direction intersecting the first direction; and a plurality of fourth touch electrodes extending in the second direction, wherein each of the first touch electrodes includes a plurality of first extensions, the first extension having a shape in which two opposite vertexes are chamfered, each of the third touch electrodes includes a plurality of third extensions, the third extension having a shape in which two opposite vertexes are chamfered, each of the fourth touch electrodes includes a plurality of fourth extensions, the fourth extension located in a chamfered first region of the first extension, and each of the second touch electrodes includes a plurality of second extensions, the second extension located in a chamfered second region of the third extension.

Description

TECHNICAL FIELD [0001] The present invention relates to a touch sensor and a display device including the touch sensor.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a touch sensor and a display device including the touch sensor, and more particularly, to a touch sensor capable of sensing a touch pressure and a display device including the touch sensor.

Various display devices such as a liquid crystal display and an organic light emitting diode display are commercially available. The display device includes a plurality of pixels and signal lines such as a plurality of gate lines and a plurality of data lines connected to the plurality of pixels. When a gate signal of a gate-on voltage is sequentially applied to a plurality of gate lines, a data voltage is applied to a plurality of data lines corresponding to a gate-on voltage to write image data to a plurality of pixels.

In recent years, a display device having a touch sensing function has become popular by providing a touch sensor on the display device. One of the methods of implementing the touch sensor is a method of detecting a touch position by sensing a change in capacitance formed between an electrode and a conductive object such as a finger according to whether the user touches the touch sensor.

SUMMARY OF THE INVENTION The present invention provides a touch sensor capable of sensing a touch position and a touch pressure, and a display device including the touch sensor.

A touch sensor according to an embodiment of the present invention includes a plurality of first touch electrodes extending in a first direction, a plurality of second touch electrodes extending in the first direction, a plurality of second touch electrodes extending in a second direction crossing the first direction, And a plurality of fourth touch electrodes extending in the second direction, wherein each of the plurality of first touch electrodes includes a plurality of first extension portions having an expanded width, The first extending portion has a shape in which two opposing corner portions are chamfered, each of the plurality of third touch electrodes includes a plurality of third extending portions having an expanded width, and the third extending portions include two vertexes facing each other Wherein each of the plurality of fourth touch electrodes has a chamfered shape and each of the plurality of fourth touch electrodes includes a plurality of fourth expanding portions whose widths are widened and the fourth extending portions are located in a chamfered first region of the first expanding portions, Each of the plurality of second touch electrodes includes a plurality of second enlarged portions having a larger width and the second extending portions are located in a chamfered second region of the third enlarged portion.

Wherein each of the plurality of first expanding portions has a shape in which a vertex facing each other in the second direction is chamfered with respect to a center of gravity of the first expanding portion, And may have a shape in which the vertexes facing each other in the first direction are chamfered with respect to the center.

Wherein the plurality of first touch electrodes and the plurality of second touch electrodes are located on the same layer, and the plurality of third touch electrodes and the plurality of fourth touch electrodes are arranged in the same layer, The touch electrode and the plurality of second touch electrodes.

Each of the plurality of first touch electrodes may further include a first connection portion located between the plurality of first extension portions adjacent to each other in the first direction and connecting the plurality of first extension portions to each other in the first direction .

Wherein each of the plurality of third touch electrodes further includes a third connection part positioned between the plurality of third extending parts adjacent to each other in the second direction and connecting the plurality of third extending parts in the second direction, The first connection portion and the third connection portion may overlap each other.

Wherein each of the plurality of second touch electrodes further includes a second connection part located between the plurality of second extending parts adjacent to each other in the first direction and connecting the plurality of second extending parts in the first direction, And the second connecting portion may overlap the third extending portion adjacent in the first direction.

Each of the plurality of fourth touch electrodes may further include a fourth connection part positioned between the plurality of fourth extending parts adjacent to each other in the second direction and connecting the plurality of fourth extending parts in the second direction, And the fourth connection portion may overlap with the first extension portion adjacent in the second direction.

A plurality of first sensing lines connected to the plurality of first touch electrodes and the plurality of second touch electrodes, a plurality of second sensing lines connected to the plurality of third touch electrodes and the plurality of fourth touch electrodes, And a touch control unit connected to the plurality of first sensing lines and the plurality of second sensing lines, wherein the touch control unit controls a change in capacitance between the plurality of first touch electrodes and the plurality of second touch electrodes To detect the touch position, and to detect the touch pressure by detecting a change in capacitance between the plurality of second touch electrodes and the plurality of fourth touch electrodes.

The plurality of first extensions, the plurality of second extensions, the plurality of third extensions, and the plurality of fourth extensions may be located in the same layer.

Each of the plurality of first touch electrodes may further include a first connection portion located between the plurality of first extension portions adjacent to each other in the first direction and connecting the plurality of first extension portions to each other in the first direction .

Each of the plurality of second touch electrodes is located in a layer different from the plurality of second extending portions with the first insulating layer interposed therebetween, and a plurality of second extending portions adjacent to each other in the first direction, And may further include a first bridge portion that connects the first bridge portion and the second bridge portion.

Wherein each of the plurality of third touch electrodes is located in a layer different from the plurality of third extending portions with the first insulating layer interposed therebetween and the plurality of third extending portions adjacent to each other in the second direction are connected to each other, As shown in FIG.

Each of the plurality of fourth touch electrodes is located in a layer different from the plurality of fourth extending portions with the first insulating layer interposed therebetween, and the fourth connecting portions, which are adjacent to each other in the second direction, As shown in FIG.

A display device according to another embodiment of the present invention includes a pixel layer including a plurality of pixels, a display panel including a lower substrate and an upper substrate facing each other with the pixel layer therebetween, and a touch sensor Wherein the touch sensor includes a plurality of first touch electrodes extending in a first direction, a plurality of second touch electrodes extending in the first direction, a plurality of second touch electrodes extending in a second direction intersecting the first direction, And a plurality of fourth touch electrodes extending in the second direction, wherein each of the plurality of first touch electrodes includes a plurality of first extension portions having an expanded width, and the first extension Wherein each of the plurality of third touch electrodes includes a plurality of third extending portions whose widths are widened and the third extending portions are arranged to face each other Wherein each of the plurality of fourth touch electrodes includes a plurality of fourth extension portions having a wide width and the fourth extension portion is located in a first chamfered region of the first extension portion, Each of the plurality of second touch electrodes includes a plurality of second extending portions having a larger width and the second extending portions are located in a chamfered second region of the third extending portion.

Wherein each of the plurality of first expanding portions has a shape in which a vertex facing each other in the second direction is chamfered with respect to a center of gravity of the first expanding portion, And may have a shape in which the vertexes facing each other in the first direction are chamfered with respect to the center.

Wherein the plurality of first touch electrodes and the plurality of second touch electrodes are located on the same layer, and the plurality of third touch electrodes and the plurality of fourth touch electrodes are arranged in the same layer, The touch electrode and the plurality of second touch electrodes.

The plurality of first extensions, the plurality of second extensions, the plurality of third extensions, and the plurality of fourth extensions may be located in the same layer.

Wherein each of the plurality of second touch electrodes further includes a first bridge portion that connects the plurality of second extending portions adjacent to each other in the first direction with the third extending portion in the middle, And a third connecting portion connecting the plurality of third extending portions adjacent to each other in the second direction, wherein each of the plurality of fourth touch electrodes includes a fourth connecting portion connecting the plurality of fourth extending portions adjacent to each other in the second direction, Wherein the first bridge portion, the third connection portion, and the fourth connection portion further include a plurality of first extending portions, a plurality of second extending portions, a plurality of second connecting portions, 3 < / RTI > extensions and the fourth extensions.

The touch sensor may include a plurality of first sensing lines connected to the plurality of first touch electrodes and the plurality of second touch electrodes, a plurality of second sensing lines connected to the plurality of third touch electrodes and the plurality of fourth touch electrodes, And a touch controller connected to the plurality of first sensing lines and the plurality of second sensing lines, wherein the touch controller includes a plurality of first touch electrodes and a plurality of second touch electrodes, The touch position can be detected by detecting a variation in capacitance between the second touch electrode and the fourth touch electrode, and the touch pressure can be sensed by detecting a change in capacitance between the plurality of second touch electrodes and the plurality of fourth touch electrodes.

The touch sensor and the display device including the touch sensor according to the embodiment of the present invention can detect not only the touch position of the user but also the touch pressure that the user presses, thereby providing more various input interfaces to the display device.

1 is a plan view showing a touch sensor according to an embodiment of the present invention.
FIG. 2 is an enlarged view of a part of the touch electrodes in the touch sensor of FIG. 1. FIG.
3 is a cross-sectional view of the touch sensor cut along a line III-III 'in FIG.
4 is a cross-sectional view of the touch sensor cut along the line IV-IV 'in FIG.
5 is a plan view showing a touch sensor according to another embodiment of the present invention.
6 is an enlarged view of a part of the touch electrodes in the touch sensor of FIG.
7 is a cross-sectional view of the touch sensor cut along the line VII-VII 'in FIG.
8 is a cross-sectional view of the touch sensor cut along the line VIII-VIII 'in FIG.
9 is a sectional view of a touch sensor cut along a line IX-IX 'in FIG.
10 is a cross-sectional view of the touch sensor cut along the line XX 'in FIG.
11 is a view showing a display device according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the embodiments described herein.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

In addition, since the sizes and thicknesses of the respective components shown in the drawings are arbitrarily shown for convenience of explanation, the present invention is not necessarily limited to those shown in the drawings. In the drawings, the thickness is enlarged to clearly represent the layers and regions. In the drawings, for the convenience of explanation, the thicknesses of some layers and regions are exaggerated.

Also, when a portion such as a layer, a film, an area, a plate, etc. is referred to as being "on" or "on" another portion, this includes not only the case where the other portion is "directly on" . Conversely, when a part is "directly over" another part, it means that there is no other part in the middle. Also, to be "on" or "on" the reference portion is located above or below the reference portion and does not necessarily mean "above" or "above" toward the opposite direction of gravity .

Also, throughout the specification, when an element is referred to as "including" an element, it is understood that the element may include other elements as well, without departing from the other elements unless specifically stated otherwise.

Also, in the entire specification, when it is referred to as "planar ", it means that the object portion is viewed from above, and when it is called" sectional image, " this means that the object portion is viewed from the side.

Also, throughout the specification, when it is referred to as "overlapped, " it means that it is superimposed on the cross section, or all or part of the plane is located in the same area.

Hereinafter, a touch sensor according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 4. FIG.

1 is a plan view showing a touch sensor according to an embodiment of the present invention. FIG. 2 is an enlarged view of a part of the touch electrodes in the touch sensor of FIG. 1. FIG. 3 is a cross-sectional view of the touch sensor cut along a line III-III 'in FIG. 4 is a cross-sectional view of the touch sensor cut along the line IV-IV 'in FIG.

1 to 4, the touch sensor 100 includes a plurality of first touch electrodes 110, a plurality of second touch electrodes 120, a plurality of third touch electrodes 130, Electrode 140 as shown in FIG.

Each of the plurality of first touch electrodes 110 and the plurality of second touch electrodes 120 extends in a first direction x on a plane. The first touch electrode 110 and the second touch electrode 120 may have different sizes and / or different shapes. The plurality of first touch electrodes 110 may be disposed parallel to each other, and the plurality of second touch electrodes 120 may be disposed parallel to each other. The plurality of first touch electrodes 110 and the plurality of second touch electrodes 120 may be positioned parallel to each other. The plurality of first touch electrodes 110 and the plurality of second touch electrodes 120 may be alternately arranged in a second direction y that intersects the first direction x. The second direction (y) may be a direction orthogonal to the first direction (x) on the plane.

Each of the plurality of third touch electrodes 130 and the plurality of fourth touch electrodes 140 extends in a second direction y on a plane. The third touch electrode 130 and the fourth touch electrode 140 may have different sizes and / or different shapes. The plurality of third touch electrodes 130 may be disposed parallel to each other, and the plurality of fourth touch electrodes 140 may be disposed parallel to each other. The plurality of third touch electrodes 130 and the plurality of fourth touch electrodes 140 may be parallel to each other. The plurality of third touch electrodes 130 and the plurality of fourth touch electrodes 140 may be alternately arranged in the first direction x.

The plurality of first touch electrodes 110 may partially overlap the plurality of third touch electrodes 130 and the plurality of fourth touch electrodes 140. The plurality of second touch electrodes 120 may partially overlap the plurality of third touch electrodes 130 and the plurality of fourth touch electrodes 140. The plurality of first touch electrodes 110 and the plurality of second touch electrodes 120 do not overlap each other and the plurality of third touch electrodes 130 and the plurality of fourth touch electrodes 140 do not overlap each other have.

The plurality of first touch electrodes 110 and the plurality of second touch electrodes 120 are connected to the plurality of first sensing lines 151 and are connected to the touch controller 160 through the plurality of first sensing lines 151. [ Lt; / RTI > Each of the plurality of first sensing lines 151 includes one end connected to each of the plurality of first touch electrodes 110 or the plurality of second touch electrodes 120 and the other end connected to the touch controller 160.

The plurality of third touch electrodes 130 and the plurality of fourth touch electrodes 140 are connected to the plurality of second sensing lines 152. The plurality of third touch electrodes 130 and the plurality of fourth touch electrodes 140 are connected to the touch controller 160 through the plurality of second sensing lines 152, Lt; / RTI > Each of the plurality of second sensing lines 152 includes one end connected to each of the plurality of third touch electrodes 130 or the plurality of fourth touch electrodes 140 and the other end connected to the touch controller 160.

Referring to FIG. 2, each of the plurality of first touch electrodes 110 includes a plurality of first extension portions 111 having a relatively wide width, a first connection portion 112 connecting adjacent first extension portions 111, .

The first extension 111 may have a shape of chamfering two vertexes facing each other with respect to the center of gravity in a virtual rhombus (or quadrangle) 115. At this time, the chamfered two vertexes may be vertexes facing each other in the second direction (y). And the shape of the chamfered first region 116 may be rhombic (or square). The length of one side of the chamfered first region 116 may be less than one-half the length of one side of the hypothetical rhombus (or quadrangle) 115.

The first connection part 112 is located between the plurality of first extension parts 111 adjacent to each other in the first direction x and connects the plurality of first extension parts 111 in the first direction x. . The first connection part 112 may be located on the same layer as the first extension part 111 on the cross section. In the manufacturing process, the first extension portion 111 and the first connection portion 112 may be formed of the same material at the same time.

Each of the plurality of third touch electrodes 130 includes a plurality of third extending portions 131 having a relatively large width and a third connecting portion 132 connecting the adjacent third extending portions 131 with each other. The plurality of third extension portions 131 do not overlap with the plurality of first touch electrodes 110.

The third extension part 131 may have a shape obtained by chamfering two vertexes facing each other with respect to the center of gravity in a hypothetical rhombus (or quadrangle) 135. At this time, the chamfered two vertexes may be vertexes facing each other in the first direction (x). And the shape of the chamfered second region 136 may be rhombic (or square). The length of one side of the chamfered second region 136 may be less than one-half the length of one side of the hypothetical rhombus (or rectangle) 135.

The third connection part 132 is located between the plurality of third extending parts 131 adjacent to each other in the second direction y and connects the plurality of third extending parts 131 in the second direction y. . The third connecting portion 132 may be located on the same layer as the third extending portion 131 on the cross section. In the manufacturing process, the third extension part 131 and the third connection part 132 may be formed of the same material at the same time.

The plurality of third touch electrodes 130 may be located on a different layer from the plurality of first touch electrodes 110. The third connection part 132 may overlap with the first connection part 112. That is, the first connection part 112 extends in the first direction x, the third connection part 132 extends in the second direction y, and the first connection part 112 and the third connection part 132 extend They can be placed on different layers and overlap each other.

Each of the plurality of second touch electrodes 120 includes a plurality of second extending portions 121 having a relatively large width and a second connecting portion 122 connecting the adjacent second extending portions 121 with each other.

The second extension 121 is located in the second region 136. The second extension portion 121 may have the same shape as the second region 136 and have a smaller size than the second region 136. That is, the second extension part 121 may be located in the second area 136 and may have a rhombic (or rectangular) shape smaller than the second area 136. The second extension part 121 does not overlap the plurality of first touch electrodes 110 and the plurality of third touch electrodes 130.

The second connection part 122 is located between the plurality of second extending parts 121 adjacent to each other in the first direction x and connects the plurality of second extending parts 121 in the first direction x. . The second connection part 122 may be located on the same layer as the second extension part 121 on the cross section. In the manufacturing process, the second extension part 121 and the second connection part 122 may be formed of the same material at the same time.

The plurality of second touch electrodes 120 may be located on a different layer from the plurality of third touch electrodes 130 on the cross section. The second connection part 122 may extend in the first direction x and may overlap the third extension part 131.

Each of the plurality of fourth touch electrodes 140 includes a plurality of fourth extending portions 141 having a relatively large width and a fourth connecting portion 142 connecting the adjacent fourth extending portions 141 with each other.

The fourth extension 141 is located in the first region 116. The fourth extension 141 may have the same shape as the first area 116 and a smaller size than the first area 116. That is, the fourth extension 141 is located in the first region 116 and may have a rhombic (or rectangular) shape smaller than the first region 116. The fourth extension 141 does not overlap the plurality of first touch electrodes 110, the plurality of second touch electrodes 120, and the plurality of third touch electrodes 130.

The fourth connection part 142 is located between the plurality of fourth extending parts 141 adjacent to each other in the second direction y and can connect the plurality of fourth extending parts 141 in the second direction y . The fourth connecting portion 142 may be located on the same layer as the fourth extending portion 141 on the cross section. In the manufacturing process, the fourth extension 141 and the fourth connection 142 may be formed of the same material at the same time.

The plurality of fourth touch electrodes 140 may be located on different layers from the plurality of first touch electrodes 110. [ The fourth connection part 142 may extend in the second direction y and overlap the first extension part 111. [

As illustrated in FIGS. 3 and 4, the first touch electrodes 110 and the plurality of second touch electrodes 120 may be located on the same layer on the first substrate 180. That is, the first extension portion 111 and the first connection portion 112 of the first touch electrode 110 are positioned on the first substrate 180 and the second extension portion 111 of the second touch electrode 120 121 and the second connection portion 122 can be located. A first insulating layer 171 is disposed on the first substrate 180, the first touch electrode 110, and the second touch electrode 120.

The plurality of third touch electrodes 130 and the plurality of fourth touch electrodes 140 may be located on the same layer on the first insulating layer 171. That is, the third extension part 131 and the third connection part 132 of the third touch electrode 130 are positioned on the first insulation layer 171 and the fourth extension part 131 and the third connection part 132 of the third touch electrode 130 are positioned on the same layer. The first connection part 141 and the fourth connection part 142 may be positioned. The second insulating layer 172 may be disposed on the first insulating layer 171, the third touch electrode 130, and the fourth touch electrode 140. [

The first insulating layer 171 is formed by insulating a plurality of touch electrodes 110 and 120 located on the first substrate 180 and a plurality of touch electrodes 130 and 140 located on the first insulating layer 171 from each other Can play a role. The second insulating layer 172 may isolate and protect the plurality of touch electrodes 130 and 140 located on the first insulating layer 171 from the outside.

The positions of the plurality of first touch electrodes 110 and the plurality of second touch electrodes 120 and the positions of the plurality of third touch electrodes 130 and the plurality of fourth touch electrodes 140 may be changed have. That is, a plurality of third touch electrodes 130 and a plurality of fourth touch electrodes 140 are located on the first substrate 180, and a plurality of first touch electrodes 110 and a plurality of second touch electrodes 120 May be located on the first insulating layer 171. [

The first insulating layer 171 and the second insulating layer 172 may include at least one of an organic insulating material and an inorganic insulating material. The organic insulating material may be selected from the group consisting of a cellulose derivative, an olefin resin, an acryl resin, a vinyl chloride resin, a styrene resin, a polyester resin, a polyamide resin, Resin, a polycarbonate resin, a polycycloolefin resin, an epoxy resin, and the like. The inorganic insulating material may include silicon oxide (SiOx), silicon nitride (SiNx), or the like.

The first to fourth touch electrodes 110, 120, 130 and 140 may be made of a conductive transparent material such as indium tin oxide (ITO), indium zinc oxide (IZO), or the like . Alternatively, the first to fourth touch electrodes 110, 120, 130, and 140 may be formed of a metal mesh.

The first substrate 180 may include glass, plastic, or the like, which is a transparent insulator. The first substrate 180 may be omitted according to a method of applying the touch sensor 100 to a display device.

Now, a method for the touch controller 160 to detect the touch position and the touch pressure of the user will be described.

The touch controller 160 may sequentially apply a touch sensing signal to the plurality of first sensing lines 151 or the plurality of second sensing lines 152. Hereinafter, the touch control unit 160 sequentially applies the touch sensing signal to the plurality of second sensing lines 152, for example. When an external object such as a user's finger or a touch fan having elasticity approaches any one of the plurality of first touch electrodes 110 or the plurality of third touch electrodes 130, And the third touch electrode 130 is changed. In addition, the electrostatic capacity between the second touch electrode 120 and the fourth touch electrode 140 in the vicinity of the finger of the user or the touch fan having elasticity is also varied.

The touch controller 160 can detect a variation in capacitance between the plurality of first touch electrodes 110 and the plurality of third touch electrodes 130 through the plurality of first sensing lines 151. [ The touch controller 160 can sense the touch position by checking the first touch electrode 110 having a capacitance variation corresponding to the touch sensing signal sequentially applied thereto.

The touch controller 160 can detect variations in capacitance between the plurality of second touch electrodes 120 and the plurality of fourth touch electrodes 140 through the plurality of first sensing lines 151. [ The touch controller 160 can sense the touch pressure by checking the number of the second touch electrodes 120 having the capacitive change corresponding to the sequentially sequentially applied touch sensing signals. The area of contact of the user's finger or the elastic touching fan with the surface of the touch sensor 100 is increased according to the pressure applied to the touch sensor 100. Accordingly, The number of the second touch electrodes 120 and the number of the fourth touch electrodes 140 is also increased and the number of the second touch electrodes 120 causing the capacitance variation is also increased. Accordingly, the touch controller 160 can sense the touch pressure by checking the number of the second touch electrodes 120 where the capacitance is changed.

Thus, the touch sensor can sense not only the touch position of the user but also the touch pressure that the user presses.

Hereinafter, a touch sensor according to another embodiment will be described with reference to FIGS. 5 to 10. FIG. The differences from the above-described touch sensor in Figs. 1 to 4 will mainly be described.

5 is a plan view showing a touch sensor according to another embodiment of the present invention. 6 is an enlarged view of a part of the touch electrodes in the touch sensor of FIG. 7 is a cross-sectional view of the touch sensor cut along the line VII-VII 'in FIG. 8 is a cross-sectional view of the touch sensor cut along the line VIII-VIII 'in FIG. 9 is a sectional view of a touch sensor cut along a line IX-IX 'in FIG. 10 is a cross-sectional view of the touch sensor cut along the line X-X 'in FIG.

5 to 10, the first extended portion 111 of the first touch electrode 110, the second extended portion 121 of the second touch electrode 120, and the second extended portion 121 of the third touch electrode 130, 3 extension part 131 and the fourth extension part 141 of the fourth touch electrode 140 are located on the same layer on the first substrate 180.

The first connecting portion 112 of the first touch electrode 110 is located on the same layer as the first extending portion 111 and is connected to the first extending portion 111.

The second connection portion 122 of the second touch electrode 120 connects the adjacent second extension portions 121 in the first direction x where the third extension portion 131 is not located in the middle on the plane. The second touch electrode 120 may further include a first bridge portion 123. The first bridge portion 123 may include a plurality of adjacent first extension portions 131 in the first direction x, And the second extension portions 121 of the first and second extension portions 121 and 122 are connected to each other in the first direction x. The first bridge portion 123 is located on the first insulation layer 171 and extends in the first direction x to overlap the third extension portion 131. The first insulating layer 171 has a first contact hole 124 located at a portion where the second extension part 121 and the first bridge part 123 overlap. The first contact hole 124 may be filled with the same material as the first bridge portion 123 and the first bridge portion 123 and the second extension portion 121 are connected to each other through the first contact hole 124 .

The third connection portion 132 of the third touch electrode 130 is located on the first insulation layer 171 and extends in the second direction Y between the plurality of third extension portions 131, (y) and overlaps with the plurality of third extending portions 131. [ The first insulating layer 171 has a second contact hole 134 located at a portion where the third extending portion 131 and the third connecting portion 132 overlap. The second contact hole 134 may be filled with the same material as the third connection part 132 and a plurality of third extension parts 131 adjacent to each other in the second direction y through the second contact hole 134 may be connected to each other Can be connected. That is, the third connection part 132 can connect the plurality of third extension parts 131 adjacent to each other in the second direction y in the form of a bridge.

The fourth connection 142 of the fourth touch electrode 140 is located on the first insulation layer 171 and extends in the second direction y. The fourth connection part 142 connects the fourth extension parts 141 adjacent to each other in the second direction y with the first extension part 111 interposed therebetween. At this time, the fourth connection part 142 overlaps with the first extension part 111. The fourth connection part 142 connects the adjacent fourth extension parts 141, which do not have the first extension part 111 in the middle, on the plane in the second direction y. At this time, the fourth connection part 142 overlaps with the second connection part 122. The first insulating layer 171 has a third contact hole 144 located at a portion where the fourth extending portion 141 and the fourth connecting portion 142 overlap. The third contact hole 144 may be filled with the same material as the fourth connection part 142 and the fourth extension part 141 adjacent to the third contact hole 144 may be connected to each other through the third contact hole 144. That is, the fourth connection part 142 may connect the fourth extension parts 141 adjacent to each other in the second direction y in the form of a bridge.

Except for these differences, the features of the embodiments described above with reference to FIGS. 1 to 4 can be applied to all of the embodiments of FIGS. 5 to 10, and descriptions of the features of the embodiments described in FIGS. 1 to 4 are omitted do.

Hereinafter, a display device including the touch sensor 100 according to the embodiment of Figs. 1 to 4 or the embodiment of Figs. 5 to 10 will be described with reference to Fig.

11 is a view showing a display device according to an embodiment of the present invention.

Referring to Fig. 11, the display device 10 includes a display panel 200 and a touch sensor 100. Fig. The display panel 200 includes a lower substrate 210, an upper substrate 220, and a pixel layer 230.

The lower substrate 210 and the upper substrate 220 face each other with the pixel layer 230 therebetween. The lower substrate 210 and the upper substrate 220 may overlap each other. At least one of the lower substrate 210 and the upper substrate 220 may be a transparent insulator made of glass or plastic, or may include at least one film, and may include a plurality of layers including at least one organic layer and at least one inorganic layer And a thin film layer of

The pixel layer 230 is positioned between the lower substrate 210 and the upper substrate 220. The pixel layer 230 includes a plurality of pixels for displaying an image, and a plurality of signal lines connected to a plurality of pixels. The image displayed on the pixel layer 230 may be viewed by the user through the upper substrate 220.

Depending on the type of the display device 10, the pixel layer 230 may include pixels having various structures. For example, when the display device 10 is a liquid crystal display, each of the plurality of pixels included in the pixel layer 230 includes at least one thin film transistor, a pixel electrode connected thereto, a common electrode corresponding to the pixel electrode, A liquid crystal layer positioned between the pixel electrode and the common electrode, and a color filter. When the display device 10 is an organic light emitting display, each of the plurality of pixels included in the pixel layer 230 includes at least one thin film transistor and an anode electrode connected thereto, a cathode electrode corresponding to the anode electrode, And an organic emission layer disposed between the anode and the cathode.

At least one of the upper substrate 220 and the lower substrate 210 may be omitted depending on the structure of the display device 10.

The type of the display device 10 and the structure of the pixel layer 230 may be variously modified and the type of the display device 10 and the structure of the pixel layer 230 according to the embodiment of the present invention are not limited Do not.

The touch sensor 100 is positioned on the upper substrate 220. The upper substrate 220 includes a corresponding surface facing the lower substrate 210 and an opposite surface of the corresponding surface where the touch sensor 100 may be positioned directly on the opposite side of the upper substrate 220. That is, the touch sensor 100 may be positioned directly on the outer surface of the upper substrate 220 which does not face the lower substrate 210. This structure is referred to as an on-cell type structure of the touch sensor 100. In the on-cell type structure of the touch sensor 100, the first substrate 180 of the touch sensor 100 is replaced with the upper substrate 220 of the display panel 200, (180) may be omitted.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are illustrative and explanatory only and are intended to be illustrative of the invention and are not to be construed as limiting the scope of the invention as defined by the appended claims. It is not. Therefore, those skilled in the art will appreciate that various modifications and equivalent embodiments are possible without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

10: Display device
100: Touch sensor
110: first touch electrode
120: second touch electrode
130: third touch electrode
140: fourth touch electrode
200: display panel

Claims (19)

A plurality of first touch electrodes extending in a first direction;
A plurality of second touch electrodes extending in the first direction;
A plurality of third touch electrodes extending in a second direction intersecting the first direction; And
And a plurality of fourth touch electrodes
/ RTI >
Wherein each of the plurality of first touch electrodes includes a plurality of first extending portions, wherein the first extending portions have a shape in which two vertexes facing each other are chamfered,
Each of the plurality of third touch electrodes includes a plurality of third extending portions, and the third extending portions have a shape in which two vertexes facing each other are chamfered,
Each of the plurality of fourth touch electrodes includes a plurality of fourth extending portions, and the fourth extending portion is located in a first chamfered region of the first extending portion,
Wherein each of the plurality of second touch electrodes includes a plurality of second extending portions and the second extending portions are located in a chamfered second region of the third extending portion
Touch sensor. The method of claim 1,
Wherein each of the plurality of first extensions has a shape in which a vertex facing each other in the second direction is chamfered with respect to a center of gravity of the first extension,
Wherein each of the plurality of third extending portions has a shape in which a vertex facing each other in the first direction is chamfered with respect to a center of gravity of the third extending portion. 3. The method of claim 2,
Wherein the plurality of first touch electrodes and the plurality of second touch electrodes are located on the same layer,
Wherein the plurality of third touch electrodes and the plurality of fourth touch electrodes are located on a different layer from the plurality of first touch electrodes and the plurality of second touch electrodes with the first insulating layer interposed therebetween. 4. The method of claim 3,
Wherein each of the plurality of first touch electrodes further includes a first connection portion which is located between the plurality of first extension portions adjacent to each other in the first direction and connects the plurality of first extension portions in the first direction with each other, . 5. The method of claim 4,
Each of the plurality of third touch electrodes further includes a third connection part located between the plurality of third extending parts adjacent to each other in the second direction and connecting the plurality of third extending parts to each other in the second direction,
Wherein the first connection portion and the third connection portion overlap each other. 4. The method of claim 3,
Wherein each of the plurality of second touch electrodes further includes a second connection portion located between the plurality of second extending portions adjacent to each other in the first direction and connecting the plurality of second extending portions in the first direction,
And the second connecting portion overlaps the third extending portion adjacent in the first direction. The method of claim 6,
Wherein each of the plurality of fourth touch electrodes further includes a fourth connection portion located between the plurality of fourth extension portions adjacent to each other in the second direction and connecting the plurality of fourth extension portions to each other in the second direction,
And the fourth connection portion overlaps with the first extension portion adjacent in the second direction. 3. The method of claim 2,
A plurality of first sensing lines connected to the plurality of first touch electrodes and the plurality of second touch electrodes;
A plurality of second sensing lines connected to the plurality of third touch electrodes and the plurality of fourth touch electrodes; And
Further comprising a touch controller connected to the plurality of first sensing lines and the plurality of second sensing lines,
Wherein the touch control unit detects a touch position by detecting a variation in capacitance between the plurality of first touch electrodes and the plurality of second touch electrodes and detects a touch position between the plurality of second touch electrodes and the plurality of second touch electrodes A touch sensor that detects the change in capacitance and senses the touch pressure. 3. The method of claim 2,
Wherein the plurality of first expanding portions, the plurality of second expanding portions, the plurality of third expanding portions, and the plurality of fourth expanding portions are located on the same layer. The method of claim 9,
Wherein each of the plurality of first touch electrodes further includes a first connection portion which is located between the plurality of first extension portions adjacent to each other in the first direction and connects the plurality of first extension portions in the first direction with each other, . 11. The method of claim 10,
Wherein each of the plurality of second touch electrodes includes a plurality of second extending portions located in layers different from the plurality of second extending portions with the first insulating layer interposed therebetween, And further comprising a first bridge portion for connecting the first bridge portion and the second bridge portion. 12. The method of claim 11,
Wherein each of the plurality of third touch electrodes includes a third connection part that is located on a layer different from the plurality of third extending parts with the first insulating layer interposed therebetween and connects the plurality of third extending parts adjacent to each other in the second direction, Further comprising a touch sensor. The method of claim 12,
Wherein each of the plurality of fourth touch electrodes includes a fourth connection portion which is located in a layer different from the plurality of fourth extending portions with the first insulating layer interposed therebetween and connects the plurality of fourth extending portions adjacent to each other in the second direction, Further comprising a touch sensor. Display panel; And
And a touch sensor disposed on the display panel,
The touch sensor includes:
A plurality of first touch electrodes extending in a first direction;
A plurality of second touch electrodes extending in the first direction;
A plurality of third touch electrodes extending in a second direction intersecting the first direction; And
And a plurality of fourth touch electrodes extending in the second direction,
Wherein each of the plurality of first touch electrodes includes a plurality of first extending portions, wherein the first extending portions have a shape in which two vertexes facing each other are chamfered,
Each of the plurality of third touch electrodes includes a plurality of third extending portions, and the third extending portions have a shape in which two vertexes facing each other are chamfered,
Each of the plurality of fourth touch electrodes includes a plurality of fourth extending portions, and the fourth extending portion is located in a first chamfered region of the first extending portion,
Wherein each of the plurality of second touch electrodes includes a plurality of second extending portions having a larger width and the second extending portions are located in a chamfered second region of the third extending portion. The method of claim 14,
Wherein each of the plurality of first extensions has a shape in which a vertex facing each other in the second direction is chamfered with respect to a center of gravity of the first extension,
Wherein each of the plurality of third extending portions has a shape in which a vertex facing each other in the first direction is chamfered with respect to a center of gravity of the third extending portion. 16. The method of claim 15,
Wherein the plurality of first touch electrodes and the plurality of second touch electrodes are located on the same layer,
Wherein the plurality of third touch electrodes and the plurality of fourth touch electrodes are located on a different layer from the plurality of first touch electrodes and the plurality of second touch electrodes with the first insulating layer interposed therebetween. 16. The method of claim 15,
Wherein the plurality of first expanding portions, the plurality of second expanding portions, the plurality of third expanding portions, and the plurality of fourth expanding portions are located in the same layer. The method of claim 17,
Each of the plurality of second touch electrodes further includes a first bridge portion which connects the plurality of second extending portions adjacent to each other in the first direction with the third extending portion in the middle,
Each of the plurality of third touch electrodes further includes a third connection unit connecting the plurality of third extension units adjacent to each other in the second direction,
Each of the plurality of fourth touch electrodes may further include a fourth connection unit connecting the plurality of fourth extension units adjacent to each other in the second direction,
Wherein the first bridge portion, the third connection portion, and the fourth connection portion have the first insulation layer, the plurality of second expansion portions, the plurality of third expansion portions, and the plurality Is positioned on a different layer from the fourth extending portion of the display device. 16. The method of claim 15,
The touch sensor includes:
A plurality of first sensing lines connected to the plurality of first touch electrodes and the plurality of second touch electrodes;
A plurality of second sensing lines connected to the plurality of third touch electrodes and the plurality of fourth touch electrodes; And
Further comprising a touch controller connected to the plurality of first sensing lines and the plurality of second sensing lines,
Wherein the touch control unit detects a touch position by detecting a variation in capacitance between the plurality of first touch electrodes and the plurality of second touch electrodes and detects a touch position between the plurality of second touch electrodes and the plurality of second touch electrodes A display device for detecting a change in capacitance and sensing a touch pressure.

Images