Touch sensor and display device

Abstract

Disclosed in embodiments of the present application are a touch sensor and a display device. The touch sensor comprises a plurality of touch units, and in one touch unit, a first touch electrode comprises a first sub-electrode, a second sub-electrode and a bridge line; in a plan view of the touch sensor, the bridge line and a second touch electrode are arranged crosswise, and the first sub-electrode is connected to the second sub-electrode by means of the bridge line; and in a touch unit row or touch unit column, one bridge line is connected to first touch electrodes of at least two touch units.

Description

Touch sensor and display device

[0001] This application claims priority to Chinese Patent Application No. 202410870304.7, filed on July 01, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of touch control, in particular to a touch sensor and a display device. BACKGROUND

[0003] In the related art, referring to FIG. 1 and FIG. 2, a display device includes an organic light-emitting diode display panel and a touch sensing structure located on the display panel, the touch sensing structure includes a transversely extending sensing electrode Gx, a longitudinally extending driving electrode Qx and a touch wire, the sensing electrode Gx and the driving electrode Qx are arranged in a cross manner. In order to avoid short circuit between the sensing electrode Gx and the driving electrode Qx, the driving electrode Qx is connected by a cross-bridge Kq at the intersection of the two, and the cross-bridge Kq is arranged in a different layer from the sensing electrode Gx and the driving electrode Qx.

[0004] The display device includes a touch area ck and a non-touch area nck located at the periphery of the touch area ck, the sensing electrode Gx and the driving electrode Qx are arranged in the touch area ck, and the touch wire g1 is arranged in the non-touch area nck. A part of the touch wire g1 is connected to the sensing electrode Gx to form a sensing channel, and a part of the touch wire g1 is connected to the driving electrode Qx to form a driving channel.

[0005] In the research and practice process of the related art, the inventors of the present application found that the impedance of the sensing channel and the driving channel is large. SUMMARY

[0006] The embodiments of the present application provide a touch sensor and a display device, which can reduce the impedance of the touch channel.

[0007] In one aspect, the embodiments of the present application provide a touch sensor, which includes:

[0008] A plurality of touch units, a plurality of the touch units are arranged into a touch unit row along a first direction, a plurality of the touch units are arranged into a touch unit column along a second direction, the first direction intersects the second direction, a touch unit includes a first touch electrode and a second touch electrode arranged separately from each other, the first touch electrode is one of a driving electrode and a sensing electrode, and the second touch electrode is the other of the driving electrode and the sensing electrode;

[0009] In one touch control unit, the first touch control electrode comprises a first sub-electrode, a second sub-electrode and a bridge line, the bridge line is arranged in a layer different from the second touch control electrode; in a plan view of the touch sensor, the first sub-electrode is located on one side of the second touch control electrode, the second sub-electrode is located on the other side of the second touch control electrode, and the bridge line is arranged to cross the second touch control electrode, and the first sub-electrode is connected to the second sub-electrode through the bridge line.

[0010] In the touch control unit row or the touch control unit column, one bridge line connects the first touch control electrodes of at least two touch control units.

[0011] In another aspect, the embodiments of the present application also provide a display device, comprising a display panel and a touch sensor as described in any one of the above embodiments, the touch sensor is arranged on the light-out side of the display panel.

[0012] The display panel comprises a plurality of sub-pixels, the first touch control electrode and the second touch control electrode are both grid-shaped, the meshes of the first touch control electrode and the second touch control electrode correspond to the sub-pixels, and a plurality of the touch control units are located in the display area of the display panel. BRIEF DESCRIPTION OF DRAWINGS

[0013] FIG. 1 is a structural schematic diagram of a touch sensor module of an organic light-emitting diode display device in the related art;

[0014] FIG. 2 is an enlarged view of part A in FIG. 1;

[0015] FIG. 3 is a plan view of a touch sensor according to an embodiment of the present application;

[0016] FIG. 4 is an enlarged view of part B in FIG. 3;

[0017] FIG. 5 is a sectional structural schematic diagram of a touch sensor according to an embodiment of the present application;

[0018] FIG. 6 is another plan view of a touch sensor according to an embodiment of the present application;

[0019] FIG. 7 is still another plan view of a touch sensor according to an embodiment of the present application;

[0020] FIG. 8 is an enlarged view of part C in FIG. 7;

[0021] FIG. 9 is a plan view of a display device according to an embodiment of the present application;

[0022] FIG. 10 is a sectional view of a display device according to an embodiment of the present application;

[0023] FIG. 11 is a partial view of a display device according to an embodiment of the present application. Embodiments of the present application

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application. In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, the embodiments can be combined with each other but are not described one by one, and the positional words such as "upper" and "lower" are generally used to refer to the upper and lower of the device in the actual use or working state, and the specific is the direction of the drawing in the drawings; and "inner" and "outer" are used in relation to the outline of the device; the words "first", "second", "third" and the like are only used as labels, and do not impose a numerical requirement or establish an order.

[0025] The embodiments of the present application provide a touch sensor and a display device, which are described in detail below. It should be noted that the description order of the following embodiments is not limited as the preferred order of the embodiments.

[0026] In one aspect, the embodiments of the present application provide a touch sensor, which comprises:

[0027] A plurality of touch units, a plurality of the touch units are arranged into a touch unit row along a first direction, a plurality of the touch units are arranged into a touch unit column along a second direction, the first direction intersects the second direction, a touch unit comprises a first touch electrode and a second touch electrode arranged separately from each other, the first touch electrode is one of a drive electrode and a sense electrode, and the second touch electrode is the other of the drive electrode and the sense electrode;

[0028] In a touch unit, the first touch electrode comprises a first sub-electrode, a second sub-electrode and a bridge line, the bridge line is arranged in a different layer from the second touch electrode; in a plan view of the touch sensor, the first sub-electrode is located on one side of the second touch electrode, the second sub-electrode is located on the other side of the second touch electrode, and the bridge line is arranged to cross the second touch electrode, and the first sub-electrode is connected to the second sub-electrode through the bridge line.

[0029] In the touch unit row or the touch unit column, a bridge line connects the first touch electrodes of at least two touch units.

[0030] Optionally, in some embodiments of the present application, in a row or a column of the touch control units, the bridge line connects the first touch electrodes of all the touch control units.

[0031] Optionally, in some embodiments of the present application, the touch sensor further comprises an intermediate insulating layer covering the bridge line, the first touch electrode and the second touch electrode are disposed on a side of the intermediate insulating layer away from the bridge line, and a plurality of vias are formed in the intermediate insulating layer;

[0032] In a touch control unit, the first sub-electrode is connected to the bridge line through at least two vias.

[0033] Optionally, in some embodiments of the present application, in a touch control unit, the second sub-electrode is connected to the bridge line through at least two vias.

[0034] Optionally, in some embodiments of the present application, the opening area of the via is greater than or equal to 9 square microns.

[0035] Optionally, in some embodiments of the present application, the touch sensor comprises a touch area and a non-touch area located at the periphery of the touch area, a plurality of touch control units are located in the touch area, and the touch sensor further comprises a first signal line located in the non-touch area, the first signal line is disposed in the same layer as the bridge line, and one first signal line is connected to one bridge line.

[0036] Optionally, in some embodiments of the present application, the width of the bridge line is greater than the width of the first signal line.

[0037] Optionally, in some embodiments of the present application, in a touch control unit, the second touch electrode comprises a third sub-electrode, a connecting line and a fourth sub-electrode, the connecting line is disposed between the third sub-electrode and the fourth sub-electrode, the connecting line is connected to the third sub-electrode and the fourth sub-electrode, and the connecting line is disposed crossing the bridge line.

[0038] Optionally, in some embodiments of the present application, in a touch control unit, the first sub-electrode comprises a first trunk, the second sub-electrode comprises a second trunk, the second touch electrode comprises a third trunk, the first trunk and the second trunk extend along the second direction, the first sub-electrode is located on one side of the third trunk, the second sub-electrode is located on the other side of the third trunk, the bridge line is connected to the first trunk and the second trunk to form a trunk passage, the third trunk extends along the first direction, and in a plan view of the touch control unit, the trunk passage and the third trunk cross to form a first area, a second area, a third area and a fourth area.

[0039] The first sub-electrode further comprises a first branch located at the first area and a second branch located at the second area, the first branch is connected to the first stem and extends along a third direction, the second branch is connected to the first stem and extends along a fourth direction, the third direction and the fourth direction are both obliquely intersected with the second direction;

[0040] The second sub-electrode further comprises a third branch located at the third area and a fourth branch located at the fourth area, the third branch is connected to the second stem and extends along a fifth direction, the fourth branch is connected to the second stem and extends along a sixth direction, the fifth direction and the sixth direction are both obliquely intersected with the second direction;

[0041] The second touch electrode further comprises a first branch electrode, a second branch electrode, a third branch electrode and a fourth branch electrode, the first branch electrode is located at the first area and connected to the third stem, the first branch electrode is arranged along the peripheral direction of the first branch, the second branch electrode is located at the second area and connected to the third stem, the second branch electrode is arranged along the peripheral direction of the second branch, the third branch electrode is located at the third area and connected to the third stem, the third branch electrode is arranged along the peripheral direction of the third branch, and the fourth branch electrode is located at the fourth area and connected to the third stem, the fourth branch electrode is arranged along the peripheral direction of the fourth branch.

[0042] Optionally, in some embodiments of the present application, the touch unit further comprises a first dummy electrode, a second dummy electrode, a third dummy electrode and a fourth dummy electrode, the first dummy electrode is arranged between the first branch and the first branch electrode, the first dummy electrode is arranged along the peripheral direction of the first branch, the second dummy electrode is arranged between the second branch and the second branch electrode, the second dummy electrode is arranged along the peripheral direction of the second branch, the third dummy electrode is arranged between the third branch and the third branch electrode, the third dummy electrode is arranged along the peripheral direction of the third branch, and the fourth dummy electrode is arranged between the fourth branch and the fourth branch electrode, the fourth dummy electrode is arranged along the peripheral direction of the fourth branch.

[0043] Optionally, in some embodiments of the present application, the first sub-electrode further comprises a fifth branch located at the first area and a sixth branch located at the second area, the fifth branch is connected to one end of the first stem away from the first branch, the fifth branch extends along the third direction, and a part of the first bifurcation electrode is arranged between the fifth branch and the first branch, the sixth branch is connected to one side of the first stem away from the second branch, the sixth branch extends along the fourth direction, and a part of the second bifurcation electrode is arranged between the sixth branch and the second branch.

[0044] The second sub-electrode further comprises a seventh branch located at the third area and an eighth branch located at the fourth area, the seventh branch is connected to one end of the second stem away from the third branch, the seventh branch extends along the fifth direction, and a part of the third bifurcation electrode is arranged between the seventh branch and the third branch, the eighth branch is connected to one side of the second stem away from the fourth branch, the eighth branch extends along the sixth direction, and a part of the fourth bifurcation electrode is arranged between the eighth branch and the fourth branch.

[0045] In another aspect, the embodiments of the present application further provide a display device, comprising a display panel and a touch sensor as described in any one of the above embodiments, the touch sensor is arranged on the light-emitting side of the display panel.

[0046] The display panel comprises a plurality of sub-pixels, the first touch electrode and the second touch electrode are both in a grid shape, the meshes of the first touch electrode and the second touch electrode correspond to the sub-pixels, and a plurality of the touch units are located in the display area of the display panel.

[0047] Optionally, in some embodiments of the present application, the bridge lines are formed by a grid structure formed by a plurality of single lines intersecting with each other, and the single lines are arranged between the sub-pixels.

[0048] In the width direction of the bridge lines, the bridge lines cross at least three sub-pixels.

[0049] Optionally, in some embodiments of the present application, the width of the single line is between 2 microns and 8 microns.

[0050] Optionally, in some embodiments of the present application, the display panel further comprises a non-display area located outside the display area, the bridge lines are located in the display area, the touch sensor further comprises a first signal line located in the non-display area, the first signal line is arranged in the same layer as the bridge lines, one first signal line is connected to one bridge line, and the first signal line is a solid wire.

[0051] The touch sensor of the embodiments of the present application comprises a plurality of touch units, one of the touch units comprises a first touch electrode and a second touch electrode arranged separately from each other; in one of the touch units, the first touch electrode comprises a first sub-electrode, a second sub-electrode and a bridge line; in a plan view of the touch sensor, the first sub-electrode is located on one side of the second touch electrode, the second sub-electrode is located on the other side of the second touch electrode, and the bridge line is arranged to cross the second touch electrode, and the first sub-electrode is connected to the second sub-electrode through the bridge line; in the row of touch units or the column of touch units, one bridge line connects the first touch electrodes of at least two touch units.

[0052] The touch sensor and the display device of the embodiments of the present application, in the row of touch units or the column of touch units, one bridge line connects the first touch electrodes of at least two touch units; that is, by growing the bridge line to connect the first touch electrodes of at least two touch units, growing the bridge line is equivalent to connecting an additional resistor in parallel on the touch channel of the first touch electrode, thereby achieving the effect of reducing the impedance of the touch channel of the first touch electrode.

[0053] Please refer to FIGS. 3-5. According to the touch sensor 100 of the embodiments, the touch sensor 100 can be applied to a display panel, such as being attached to the display panel by an external mounting manner or being formed on or in the display panel by an integrated manner. The touch sensor 100 comprises a plurality of touch units Tu, and each touch unit Tu can comprise a plurality of touch electrodes configured to be capable of sensing a user's touch by using capacitive sensing of the touch electrodes.

[0054] The display panel can be a flexible panel or a rigid panel, such as an organic light-emitting display panel, an inorganic electroluminescent display panel, a quantum dot light-emitting display panel, a micro-LED display panel, a nano-LED display panel, a field emission display panel, a liquid crystal display panel, and an electrophoretic display panel.

[0055] In FIGS. 3-5, the first direction F1 can be a direction parallel to one side of the touch sensor 100 in a plan view, and for example, can be a transverse direction of the touch sensor 100. The second direction F2 can be a direction parallel to the other side of the touch sensor 100 in a plan view, and can be a longitudinal direction of the touch sensor 100. That is, the first direction F1 is perpendicular to the second direction F2. However, in some embodiments, the first direction F1 and the second direction F2 can also intersect non-perpendicularly.

[0056] The touch sensor 100 can have a rectangular shape or a square shape in a plan view, but embodiments are not limited thereto. In some embodiments, the touch sensor 100 can have a rectangular shape with perpendicular corners or rounded corners in a plan view. The touch sensor 100 can include two short sides arranged in a first direction F1 and two long sides arranged in a second direction F2 in a plan view.

[0057] It is to be understood that, referring to FIG. 3, the touch sensor 100 is driven by a driving device Qd. The driving device Qd can be a touch chip.

[0058] The driving device Qd can be electrically and physically connected to the touch unit Tu. The driving device Qd can provide a touch driving signal to the plurality of touch electrodes in the touch unit Tu and can sense a change in capacitance between the plurality of touch electrodes. Based on the amount of change in capacitance between the touch electrodes, the driving device Qd can determine whether a touch of a user is input and can generate touch coordinate data.

[0059] The driving device Qd is mounted on a circuit board DL and electrically connects the touch sensor 100 through the circuit board DL, but is not limited thereto, for example, the driving device Qd can be integrated on a display panel.

[0060] In one or more embodiments of the present application, the touch sensor 100 includes a touch area TP and a non-touch area NTP, the non-touch area NTP being disposed outside the touch area TP.

[0061] The plurality of touch units Tu are disposed in the touch area TP. The plurality of touch units Tu are arranged in a touch unit row along a first direction F1 and are arranged in a touch unit column along a second direction F2. The first direction F1 intersects the second direction F2.

[0062] A touch unit Tu includes a first touch electrode Tx and a second touch electrode Rx disposed apart from each other, the first touch electrode Tx being one of a driving electrode and a sensing electrode, and the second touch electrode Rx being the other of the driving electrode and the sensing electrode.

[0063] In a touch unit Tu, the first touch electrode Tx includes a first sub-electrode tx1, a second sub-electrode tx2, and a bridge line tx3 disposed apart from the second touch electrode Rx. In a plan view of the touch sensor 100, the first sub-electrode tx1 is located at one side of the second touch electrode Rx, the second sub-electrode tx2 is located at the other side of the second touch electrode Rx, the bridge line tx3 is disposed to cross the second touch electrode Rx, and the first sub-electrode tx1 is connected to the second sub-electrode tx2 through the bridge line tx3.

[0064] In the touch unit row or the touch unit column, a bridge line tx3 connects the first touch electrodes Tx of at least two touch units Tu.

[0065] In the touch unit row or the touch unit column, a bridge line tx3 connects the first touch electrodes Tx of at least two touch units Tu. That is, by increasing the bridge line tx3 to connect the first touch electrodes Tx of at least two touch units Tu, the bridge line tx3 is equivalent to connecting an additional resistor in parallel to the touch channel of the first touch electrode Tx, thereby reducing the impedance of the touch channel of the first touch electrode Tx.

[0066] It should be understood that although FIG. 3 only shows one arrangement of the first touch unit Tx: in the touch unit column, the plurality of first touch electrodes Tx are arranged along the second direction F2 to form a touch channel. That is, based on FIG. 3, when the first touch electrode Tx is a driving electrode and the second touch electrode Rx is a sensing electrode, in the touch unit column, the plurality of first touch electrodes Tx are connected to form a driving channel, a bridge line tx3 connects at least two first touch electrodes Tx to reduce the impedance of the driving channel; in the touch unit row, the plurality of second touch electrodes Rx are connected to form a sensing channel. When the first touch electrode Tx is a sensing electrode and the second touch electrode Rx is a driving electrode, in the touch unit column, the plurality of first touch electrodes Tx are connected to form a sensing channel, a bridge line tx3 connects at least two first touch electrodes Tx to reduce the impedance of the sensing channel; in the touch unit row, the plurality of second touch electrodes Rx are connected to form a driving channel.

[0067] Optionally, in one or more embodiments, in the touch unit column, a bridge line tx3 connects the first touch electrodes Tx of all touch units Tu to further reduce the impedance of the touch channel formed by the first touch electrodes Tx.

[0068] Optionally, the bridge line tx3 is arranged to extend along the second direction F2. In the second direction F2, the length of the bridge line tx3 is equal to the length of the touch unit column. The bridge line tx3 is located at the center line of the long axis of the touch unit column, so that the distance between the bridge lines tx3 of adjacent columns is equal, improving the uniformity of touch.

[0069] In addition, compared with the corresponding embodiment of FIG. 3, please refer to FIG. 6, in some embodiments, the first direction F1 and the second direction F2 can be exchanged, so that the plurality of first touch electrodes Tx are arranged along the first direction F1 to form a touch channel, at this time, in the touch unit row, a bridge line tx3 connects the first touch electrodes Tx of at least two touch units Tu. That is, when the first touch electrode Tx is a driving electrode and the second touch electrode Rx is a sensing electrode, in the touch unit row, the plurality of first touch electrodes Tx are connected to form a driving channel, a bridge line tx3 connects at least two first touch electrodes Tx, reducing the impedance of the driving channel; in the touch unit column, the plurality of second touch electrodes Rx are connected to form a sensing channel. When the first touch electrode Tx is a sensing electrode and the second touch electrode Rx is a driving electrode, in the touch unit row, the plurality of first touch electrodes Tx are connected to form a sensing channel, a bridge line tx3 connects at least two first touch electrodes Tx, reducing the impedance of the sensing channel; in the touch unit column, the plurality of second touch electrodes Rx are connected to form a driving channel.

[0070] Optionally, in one or more embodiments of the present application, in a touch unit row, a bridge line tx3 connects the first touch electrodes Tx of all touch units Tu, to further reduce the impedance of the touch channel formed by the first touch electrodes Tx.

[0071] Optionally, the bridge line tx3 extends along the first direction F1. In the first direction F1, the length of the bridge line tx3 is equal to the length of the touch unit column. The bridge line tx3 is located at the center line of the long axis of the touch unit column, so that the distance of the bridge line tx3 between adjacent columns is equal, improving the uniformity of touch.

[0072] Optionally, in one or more embodiments of the present application, in a touch unit Tu, the second touch electrode Rx includes a third sub-electrode rx1, a connecting line rx3 and a fourth sub-electrode rx2, the connecting line rx3 is arranged between the third sub-electrode rx1 and the fourth sub-electrode rx2, the connecting line rx3 is connected to the third sub-electrode rx1 and the fourth sub-electrode rx2, and the connecting line rx3 is arranged in cross with the bridge line tx3.

[0073] Optionally, in one or more embodiments of the present application, in the adjacent two touch units Tu of the touch unit column, the first sub-electrode tx1 of a touch unit Tu is connected to the second sub-electrode tx2 of another touch unit Tu; in the adjacent two touch units Tu of the touch unit row, the third sub-electrode rx1 of a touch unit Tu is connected to the fourth sub-electrode rx2 of another touch unit Tu.

[0074] Optionally, in one or more embodiments of the present application, the touch sensor 100 further comprises a first signal line xh1 located in the non-touch area NTP, the first signal line xh1 is arranged in the same layer as the bridge line tx3, and one first signal line xh1 is connected to one bridge line tx3.

[0075] One end of the first signal line xh1 is connected to the bridge line tx3, and the other end of the first signal line xh1 is connected to the driving device Qd. Arranging the first signal line xh1 in the same layer as the bridge line tx3 can form the first signal line xh1 and the bridge line tx3 by using the same mask process, thereby saving the mask process.

[0076] Optionally, in one or more embodiments of the present application, the touch sensor 100 further comprises a second signal line xh2 located in the non-touch area NTP, one end of the second signal line xh2 is connected to the touch channel formed by the second touch electrode Rx, and the other end of the second signal line xh2 is connected to the driving device Qd.

[0077] The second signal line xh2 is arranged in the same layer as the second touch electrode Rx, and in some embodiments, the second signal line xh2 can also be arranged in the same layer as the bridge line tx3.

[0078] Optionally, in one or more embodiments of the present application, the width k1 of the bridge line tx3 is greater than the width of the first signal line xh1. The width k1 of the bridge line tx3 is designed to be larger to further reduce the impedance of the touch channel.

[0079] Optionally, in one or more embodiments of the present application, the touch sensor 100 further comprises a substrate IL1, an intermediate insulating layer IL2, and a protective layer Bc. The bridge line tx3 is arranged on the substrate IL1. The intermediate insulating layer IL2 covers the bridge line tx3. The first touch electrode Tx and the second touch electrode Rx are arranged on the side of the intermediate insulating layer IL2 away from the bridge line tx3. A plurality of vias gk are formed in the intermediate insulating layer IL2. The protective layer Bc covers the first touch electrode Tx and the second touch electrode Rx.

[0080] In a touch unit Tu, the first sub-electrode tx1 is connected to the bridge line tx3 through at least two vias gk. It can be understood that the first sub-electrode tx1 is connected to the bridge line tx3 through a plurality of vias gk, which not only improves the reliability of the connection between the two, but also reduces the impedance of the first touch electrode Tx.

[0081] In one or more embodiments of the present application, in a touch unit Tu, the second sub-electrode tx2 is connected to the bridge line tx3 through at least two vias gk. It can be understood that the second sub-electrode tx2 is connected to the bridge line tx3 through a plurality of vias gk, which not only improves the reliability of the connection between the two, but also reduces the impedance of the first touch electrode Tx.

[0082] In one or more embodiments of the present application, the opening area of the via gk is greater than or equal to 9 square microns, such as can be 9 square microns, 10 square microns, 11 square microns, 12 square microns, 13 square microns, 14 square microns, 15 square microns, 16 square microns, 17 square microns, 18 square microns, 19 square microns, 20 square microns, 25 square microns, 30 square microns, or 40 square microns, etc.

[0083] It is to be understood that the greater the opening area of the via gk, the greater the connection area of the first sub-electrode tx1 and the second sub-electrode tx2 to the bridging line tx3, the stronger the connection reliability, and the smaller the impedance of the first touch electrode Tx. Therefore, the opening area of the via gk is greater than or equal to 9 square microns to reduce the impedance of the first touch electrode Tx on the basis of meeting the connection reliability.

[0084] Optionally, the opening shape of the via gk can be a square, such as its size can be 3 microns*3 microns, 4 microns*4 microns, or 5 microns*5 microns; the opening shape thereof can also be a rectangle, such as its size can be 4 microns*3 microns, 6 microns*4 microns, or 7 microns*5 microns; or the opening shape of the via gk can be other shapes, such as a circle, an ellipse, etc.

[0085] Optionally, the material of the first touch electrode Tx and the second touch electrode Rx can be a metal, a metal alloy, or a metal oxide, such as can be indium tin oxide, indium zinc oxide, or formed from a metal element selected from chromium, copper, aluminum, gold, silver, zinc, molybdenum, tantalum, titanium, tungsten, manganese, nickel, iron, neodymium, cobalt, an alloy with any of the above metal elements as a component, or an alloy combining any of the above metal elements, etc. In addition, the first touch electrode Tx and the second touch electrode Rx can have a single-layer structure or a laminated structure of two or more layers.

[0086] Please refer to FIG. 7 and FIG. 8, FIG. 7 shows the arrangement and connection structure of the plan view of the touch sensor 100 according to one or more embodiments of the present application. FIG. 8 is a schematic enlarged view showing part C in FIG. 7.

[0087] In FIG. 7 and FIG. 8, the parts different from the above-mentioned embodiments will be described to avoid redundant description. Among them, the pattern of the first touch electrode Tx and the second touch electrode Rx in the embodiments shown in FIG. 7 and FIG. 8 is different from the pattern of the first touch electrode Tx and the second touch electrode Rx shown in FIG. 3.

[0088] Referring to FIG. 7 and FIG. 8, in one or more embodiments of the present application, in the touch unit Tu, the first sub-electrode tx1 includes a first trunk tz1, the second sub-electrode tx2 includes a second trunk tz2, and the second touch electrode Rx includes a third trunk rz1. The first trunk tz1 and the second trunk tz2 extend along the second direction F2. The first sub-electrode tx1 is located at one side of the third trunk rz1, and the second sub-electrode tx2 is located at the other side of the third trunk rz1. A bridge tx3 is connected to the first trunk tz1 and the second trunk tz2 to form a trunk channel. The third trunk rz1 extends along the first direction F1. In the plan view of the touch unit Tu, the trunk channel and the third trunk rz1 cross to form a first region q1, a second region q2, a third region q3, and a fourth region q4.

[0089] The first sub-electrode tx1 further includes a first branch tf1 located in the first region q1 and a second branch tf2 located in the second region q2. The first branch tf1 is connected to the first trunk tz1 and extends along a third direction F3. The second branch tf2 is connected to the first trunk tz1 and extends along a fourth direction F4. The third direction F3 and the fourth direction F4 are both obliquely intersected with the second direction F2.

[0090] The second sub-electrode tx2 further includes a third branch tf3 located in the third region q3 and a fourth branch tf4 located in the fourth region q4. The third branch tf3 is connected to the second trunk tz2 and extends along a fifth direction F5. The fourth branch tf4 is connected to the second trunk tz2 and extends along a sixth direction F6. The fifth direction F5 and the sixth direction F6 are both obliquely intersected with the second direction F2.

[0091] Optionally, the sixth direction F6 can be opposite to the third direction F3, or the sixth direction F6 can be different from the third direction F3 and not located on the same straight line. The fifth direction F5 can be opposite to the fourth direction F4, or the fifth direction F5 can be different from the fourth direction F4 and not located on the same straight line.

[0092] Optionally, the second touch electrode Rx further includes a first branch electrode rc1, a second branch electrode rc2, a third branch electrode rc3, and a fourth branch electrode rc4.

[0093] The first branch electrode rc1 is located in the first region q1 and connected to the third stem rz1, and the first branch electrode rc1 is arranged along the peripheral direction of the first branch tf1. The second branch electrode rc2 is located in the second region q2 and connected to the third stem rz1, and the second branch electrode rc2 is arranged along the peripheral direction of the second branch tf2. The third branch electrode rc3 is located in the third region q3 and connected to the third stem rz1, and the third branch electrode rc3 is arranged along the peripheral direction of the third branch tf3. The fourth branch electrode rc4 is located in the fourth region q4 and connected to the third stem rz1, and the fourth branch electrode rc4 is arranged along the peripheral direction of the fourth branch tf4.

[0094] The first branch electrode rc1 surrounds the first branch tf1, the second branch electrode rc2 surrounds the second branch tf2, the third branch electrode rc3 surrounds the third branch tf3, and the fourth branch electrode rc4 surrounds the fourth branch tf4, thereby increasing the capacitive coupling area of the first touch electrode Tx and the second touch electrode Rx, and improving the touch performance of the touch unit Tu.

[0095] Optionally, in one or more embodiments of the present application, the touch unit Tu further comprises a first dummy electrode dm1, a second dummy electrode dm2, a third dummy electrode dm3, and a fourth dummy electrode dm4. The first dummy electrode dm1 is arranged between the first branch tf1 and the first branch electrode rc1, and the first dummy electrode dm1 is arranged along the peripheral direction of the first branch tf1. The second dummy electrode dm2 is arranged between the second branch tf2 and the second branch electrode rc2, and the second dummy electrode dm2 is arranged along the peripheral direction of the second branch tf2. The third dummy electrode dm3 is arranged between the third branch tf3 and the third branch electrode rc3, and the third dummy electrode dm3 is arranged along the peripheral direction of the third branch tf3. The fourth dummy electrode dm4 is arranged between the fourth branch tf4 and the fourth branch electrode rc4, and the fourth dummy electrode dm4 is arranged along the peripheral direction of the fourth branch tf4.

[0096] It should be noted that the first touch electrode Tx and the second touch electrode Rx are separated from and insulated from the dummy electrodes. When a user's finger or a stylus touches the touch sensor 100, the first touch electrode Tx and the second touch electrode Rx do not generate a capacitance with the dummy electrodes.

[0097] The dummy electrodes can reduce the effective touch area of the touch unit Tu, thereby reducing the load and ground capacitance of the touch unit Tu. The first dummy electrode dm1 is arranged between the first branch tf1 and the first branch electrode rc1, the second dummy electrode dm2 is arranged between the second branch tf2 and the second branch electrode rc2, the third dummy electrode dm3 is arranged between the third branch tf3 and the third branch electrode rc3, and the fourth dummy electrode dm4 is arranged between the fourth branch tf4 and the fourth branch electrode rc4, so that the areas of the dummy electrodes in the four regions of the touch unit Tu are consistent, and the uniformity of the touch performance of the touch unit Tu is improved. In addition, the first touch electrode Tx and the second touch electrode Rx are separated by the dummy electrodes, which can reduce the risk of short circuiting of the first touch electrode Tx and the second touch electrode Rx in the process.

[0098] Optionally, in one or more embodiments of the present application, the first dummy electrode dm1 can further include a protrusion tb1 extending towards the first branch tf1 and the first branch electrode rc1, so that the first branch tf1 and the first branch electrode rc1 are both concave and have a gap corresponding to the protrusion tb1, and the protrusion tb1 is arranged in the gap. The cooperation of the protrusion tb1 and the gap can fine-tune the total area of the dummy electrodes in the touch unit Tu to meet the requirements of load and touch performance, and further reduce the risk of short circuiting of the first touch electrode Tx and the second touch electrode Rx in the process.

[0099] Optionally, in one or more embodiments of the present application, the other dummy electrodes (dm2 to dm8) are also provided with protrusions tb1, and the corresponding other branches (tf2 to tf8) and branch electrodes (rc2 to rc4) are also provided with gaps.

[0100] Optionally, in one or more embodiments of the present application, the first sub-electrode tx1 further includes a fifth branch tf5 located in the first region q1 and a sixth branch tf6 located in the second region q2. The fifth branch tf5 is connected to one end of the first main stem tz1 away from the first branch tf1, the fifth branch tf5 extends along the third direction F3, and a part of the first branch electrode rc1 is arranged between the fifth branch tf5 and the first branch tf1. The sixth branch tf6 is connected to one side of the first main stem tz1 away from the second branch tf2, the sixth branch tf6 extends along the fourth direction F4, and a part of the second branch electrode rc2 is arranged between the sixth branch tf6 and the second branch tf2.

[0101] The second sub-electrode tx2 further comprises a seventh branch tf7 located at the third region q3 and an eighth branch tf8 located at the fourth region q4. The seventh branch tf7 is connected to the second stem tz2 away from the third branch tf3, and the seventh branch tf7 extends along a fifth direction F5. A portion of the third branch point electrode rc3 is arranged between the seventh branch tf7 and the third branch tf3. The eighth branch tf8 is connected to the second stem tz2 away from the fourth branch tf4, and the eighth branch tf8 extends along a sixth direction F6. A portion of the fourth branch point electrode rc4 is arranged between the eighth branch tf8 and the fourth branch tf4.

[0102] It can be understood that the first sub-electrode tx1 is additionally provided with the fifth branch tf5 to increase the capacitive coupling area between the fifth branch tf5 and the first branch point electrode rc1, and is additionally provided with the sixth branch tf6 to increase the capacitive coupling area between the fifth branch tf5 and the second branch point electrode rc2. The second sub-electrode tx2 is additionally provided with the seventh branch tf7 and the eighth branch tf8 to increase the capacitive coupling area between the seventh branch tf7 and the third branch point electrode rc3, and to increase the capacitive coupling area between the eighth branch tf8 and the fourth branch point electrode rc4.

[0103] Optionally, a fifth dummy electrode dm5 is further arranged between the fifth branch tf5 and the first branch point electrode rc1. A sixth dummy electrode dm6 is further arranged between the sixth branch tf6 and the second branch point electrode rc2. A seventh dummy electrode dm7 is further arranged between the seventh branch tf7 and the third branch point electrode rc3. An eighth dummy electrode dm8 is further arranged between the eighth branch tf8 and the fourth branch point electrode rc4.

[0104] Optionally, in one or more embodiments, in the adjacent two touch control units Tu in a touch control unit column, the first stem tz1 of the first sub-electrode tx1 of one touch control unit Tu is connected to the second stem tz2 of the second sub-electrode tx2 of another touch control unit Tu. In the adjacent two touch control units Tu in a touch control unit row, the third stem rz1 of one touch control unit Tu is connected to the third stem rz1 of another touch control unit Tu.

[0105] On the other hand, referring to FIG. 9 and FIG. 10, the embodiments of the present application further provide a display device 1000, which comprises a display panel 200 and a touch sensor 100 as described in any one of the above embodiments. The touch sensor 100 is arranged on the light-emitting side of the display panel 200.

[0106] It should be noted that the structure of the touch sensor of the display apparatus 1000 according to the embodiments of the present application is similar or the same as that of the touch sensor 100 according to the above-described embodiments, and the description of the touch sensor 100 according to the above-described embodiments can be referred to. In addition, the display apparatus 1000 according to the embodiments of the present application is described with respect to the touch sensor corresponding to FIGS. 9 and 10, but is not limited thereto. For example, the touch sensor of the display apparatus 1000 can be the touch sensor corresponding to FIGS. 7 and 8.

[0107] The display apparatus 1000 according to some embodiments of the present application can be used by a portable electronic device such as a mobile phone, a smart phone, a tablet, a mobile communication terminal, an electronic notebook, an electronic book, a portable multimedia player (PMP), a navigation device, and an ultra-mobile PC. For example, the display apparatus 1000 can be used as a display unit of a television, a laptop computer, a monitor, an electronic billboard, or an Internet of Things (IOT) device. For another example, the display apparatus 1000 can be applied to a wearable device such as a smart watch, a watch phone, a glasses-type display, and a head-mounted display.

[0108] The display apparatus 1000 according to some embodiments can be classified into various apparatuses according to a manner of displaying an image. For example, the display apparatus 1000 can be classified and implemented as an organic light emitting display apparatus, an inorganic light emitting display apparatus, a quantum dot light emitting display apparatus, a micro light emitting diode display apparatus, a nano light emitting diode display apparatus, a plasma display apparatus, a field emission display apparatus, a liquid crystal display apparatus, an electrophoretic display apparatus, or the like. In the following description, an organic light emitting display apparatus will be described as an example of the display apparatus.

[0109] The touch sensor 100 can be mounted on a front surface of the display panel 200 or formed integrally with the display panel 200.

[0110] The display panel 200 can be divided into a display area DA for displaying an image and a non-display area NDA located around the display area DA. Among them, the display area DA overlaps the touch area TP, and the non-display area ND and the non-touch area NTP overlap.

[0111] Referring to FIG. 11, the display panel 200 includes a plurality of sub-pixels sp. The sub-pixels are disposed in the display area DA. The sub-pixels sp can include red sub-pixels, green sub-pixels, and blue sub-pixels, or red sub-pixels, green sub-pixels, blue sub-pixels, and white sub-pixels.

[0112] The first touch electrode Tx and the second touch electrode Rx are each in a grid shape, and the meshes of the first touch electrode Tx and the second touch electrode Rx correspond to the sub-pixels sp. A plurality of touch units Tu are located in the display area DA of the display panel 200.

[0113] The grid-shaped touch electrode can reduce the influence of the touch electrode on the light emission of the display panel 200.

[0114] Optionally, in one or more embodiments of the present application, the bridge line tx3 is formed by a grid structure of a plurality of single lines dux arranged between the sub-pixels sp. In the width direction of the bridge line tx3, the bridge line tx3 crosses at least three sub-pixels sp.

[0115] It can be understood that the more the number of sub-pixels sp crossed by the bridge line tx3, the greater the width of the bridge line tx3, and the lower the impedance of the bridge line tx3. The bridge line tx3 crosses at least three sub-pixels sp to meet the impedance requirement of the first touch electrode Tx.

[0116] Optionally, in one or more embodiments of the present application, the width of the single line dux is between 2 microns and 8 microns, such as 2 microns, 3 microns, 4 microns, 5 microns, 6 microns, 7 microns, or 8 microns.

[0117] It should be understood that the greater the width of the single line dux, the more the single line dux blocks the lateral light emitted by the display panel 200. Therefore, the smaller the width of the single line dux, the lower the influence of the single line dux on the lateral light emission of the display panel 200.

[0118] Optionally, in one or more embodiments of the present application, the bridge line tx3 is located in the display area DA, and the touch sensor 100 further includes a first signal line xh1 located in the non-display area NDA, the first signal line xh1 is arranged in the same layer as the bridge line tx3, and the first signal line xh1 is connected to the bridge line tx3, and the first signal line xh1 is a solid wire.

[0119] It should be understood that, compared with the grid-shaped touch electrode, the solid wire is a wire that has not been grid processed, and in a plan view, the solid wire does not have an eye.

[0120] It can be understood that, under the same width and thickness, the cross-sectional area of the solid wire is greater than that of the grid line, so that the impedance of the solid wire is less than that of the grid line. Therefore, the first signal line xh1 and the second signal line xh2 using the solid wire have smaller impedance. Since the bridge line tx3 is located in the display area DA, the use of the grid line for the bridge line tx3 can reduce the influence on the light emission of the display panel 200. Therefore, in order to reduce the impedance of the bridge line tx3, the width of the bridge line tx3 can be greater than the width of the first signal line xh1.

[0121] The touch sensor 100 of the display device 1000 in the embodiments of the present application comprises a plurality of touch units Tu, and a touch unit Tu comprises a first touch electrode Tx and a second touch electrode Rx arranged separately from each other; in a touch unit Tu, the first touch electrode Tx comprises a first sub-electrode tx1, a second sub-electrode tx2 and a bridge line tx3. In the plan view of the touch sensor 100, the first sub-electrode tx1 is located at one side of the second touch electrode Rx, the second sub-electrode tx2 is located at the other side of the second touch electrode Rx, the bridge line tx3 is arranged to cross the second touch electrode Rx, and the first sub-electrode tx1 is connected to the second sub-electrode tx2 through the bridge line tx3. In a row of touch units Tu or a column of touch units Tu, one bridge line tx3 connects the first touch electrodes Tx of at least two touch units Tu.

[0122] In the display device 1000 in the embodiments of the present application, in a row of touch units Tu or a column of touch units Tu, one bridge line tx3 connects the first touch electrodes Tx of at least two touch units Tu; that is, by growing the bridge line to connect the first touch electrodes of at least two touch units, growing the bridge line is equivalent to connecting an additional resistor in parallel on the touch channel of the first touch electrode, thereby achieving the effect of reducing the impedance of the touch channel of the first touch electrode.

[0123] The above describes in detail a touch sensor and a display device provided by the embodiments of the present application, and the principles and implementation manners of the present application are described by applying specific examples; the above description of the embodiments is only used to help understand the method of the present application and its core idea; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manner and application range can be changed, and the above description of the present application should not be understood as a limitation.

Claims

1. A touch sensor, comprising: a plurality of touch units, the plurality of touch units are arranged into a touch unit row along a first direction and arranged into a touch unit column along a second direction, the first direction intersects the second direction, one touch unit comprises a first touch electrode and a second touch electrode arranged separately, the first touch electrode is one of a drive electrode and a sense electrode, and the second touch electrode is the other of the drive electrode and the sense electrode; in one touch unit, the first touch electrode comprises a first sub-electrode, a second sub-electrode and a bridge line, the bridge line is arranged in a layer different from the second touch electrode; in a plan view of the touch sensor, the first sub-electrode is located on one side of the second touch electrode, the second sub-electrode is located on the other side of the second touch electrode, and the bridge line is arranged to cross the second touch electrode, the first sub-electrode is connected to the second sub-electrode through the bridge line; wherein in the touch unit row or the touch unit column, one bridge line connects the first touch electrodes of at least two touch units.

2. The touch sensor of claim 1, wherein, In the touch unit row or the touch unit column, one bridge line connects the first touch electrodes of all the touch units.

3. The touch sensor of claim 2, wherein, The touch sensor further comprises an intermediate insulating layer, the intermediate insulating layer covers the bridge line, the first touch electrode and the second touch electrode are arranged on a side of the intermediate insulating layer away from the bridge line, and a plurality of vias are formed in the intermediate insulating layer; in one touch unit, the first sub-electrode is connected to the bridge line through at least two vias.

4. The touch sensor of claim 3, wherein, in one touch unit, the second sub-electrode is connected to the bridge line through at least two vias.

5. The touch sensor of claim 3, wherein, The opening area of the via is greater than or equal to 9 square microns.

6. The touch sensor of any of claims 2-5, wherein, The touch sensor comprises a touch area and a non-touch area located at the periphery of the touch area, the plurality of touch units are located in the touch area, and the touch sensor further comprises a first signal line located in the non-touch area, the first signal line is arranged in the same layer as the bridge line, and one first signal line is connected to one bridge line.

7. The touch sensor of claim 6, wherein, The width of the bridge line is greater than the width of the first signal line.

8. The touch sensor of claim 6, wherein, in the touch unit, the second touch electrode comprises a third sub-electrode, a connecting line and a fourth sub-electrode, the connecting line is arranged between the third sub-electrode and the fourth sub-electrode, the connecting line is connected to the third sub-electrode and the fourth sub-electrode, and the connecting line is arranged to cross the bridge line.

9. The touch sensor of claim 6, wherein, In the touch unit, the first sub-electrode comprises a first stem, the second sub-electrode comprises a second stem, the second touch electrode comprises a third stem, the first stem and the second stem extend along the second direction, the first sub-electrode is located at one side of the third stem, the second sub-electrode is located at the other side of the third stem, the bridge line is connected to the first stem and the second stem to form a stem channel, and the third stem extends along the first direction. In the touch unit, the first sub-electrode comprises a first stem, the second sub-electrode comprises a second stem, the second touch electrode comprises a third stem, the first stem and the second stem extend along the second direction, the first sub-electrode is located at one side of the third stem, the second sub-electrode is located at the other side of the third stem, the bridge line is connected to the first stem and the second stem to form a stem channel, and the third stem extends along the first direction. The second sub-electrode further comprises a third branch located in the third area and a fourth branch located in the fourth area, the third branch is connected to the second stem and extends along a fifth direction, and the fourth branch is connected to the second stem and extends along a sixth direction, the fifth direction and the sixth direction are both obliquely intersected with the second direction. The second touch electrode further comprises a first branch electrode, a second branch electrode, a third branch electrode and a fourth branch electrode, the first branch electrode is located in the first area and connected to the third stem, the first branch electrode is arranged along the peripheral direction of the first branch, the second branch electrode is located in the second area and connected to the third stem, the second branch electrode is arranged along the peripheral direction of the second branch, the third branch electrode is located in the third area and connected to the third stem, the third branch electrode is arranged along the peripheral direction of the third branch, and the fourth branch electrode is located in the fourth area and connected to the third stem, the fourth branch electrode is arranged along the peripheral direction of the fourth branch.

10. The touch sensor of claim 9, wherein, The touch unit further comprises a first dummy electrode, a second dummy electrode, a third dummy electrode and a fourth dummy electrode, the first dummy electrode is arranged between the first branch and the first branch electrode, the first dummy electrode is arranged along the peripheral direction of the first branch, the second dummy electrode is arranged between the second branch and the second branch electrode, the second dummy electrode is arranged along the peripheral direction of the second branch, the third dummy electrode is arranged between the third branch and the third branch electrode, the third dummy electrode is arranged along the peripheral direction of the third branch, and the fourth dummy electrode is arranged between the fourth branch and the fourth branch electrode, the fourth dummy electrode is arranged along the peripheral direction of the fourth branch.

11. The touch sensor of claim 10, wherein, The first sub-electrode further comprises a fifth branch located at the first area and a sixth branch located at the second area, the fifth branch is connected to one end of the first stem away from the first branch, the fifth branch extends along the third direction, and a part of the first forked electrode is arranged between the fifth branch and the first branch, the sixth branch is connected to one side of the first stem away from the second branch, the sixth branch extends along the fourth direction, and a part of the second forked electrode is arranged between the sixth branch and the second branch; The second sub-electrode further comprises a seventh branch located at the third area and an eighth branch located at the fourth area, the seventh branch is connected to one end of the second stem away from the third branch, the seventh branch extends along the fifth direction, and a part of the third forked electrode is arranged between the seventh branch and the third branch, the eighth branch is connected to one side of the second stem away from the fourth branch, the eighth branch extends along the sixth direction, and a part of the fourth forked electrode is arranged between the eighth branch and the fourth branch.

12. The touch sensor of claim 10, wherein, The first dummy electrode can further comprise the protruding part extending to the first branch and the first forked electrode, the first branch and the first forked electrode are both concavely provided with a notch corresponding to the protruding part, and the protruding part is arranged in the notch.

13. The touch sensor of claim 10, wherein, In two adjacent touch control units in the touch control unit column, the first stem of the first sub-electrode of one touch control unit is connected to the second stem of the second sub-electrode of the other touch control unit; and in two adjacent touch control units in the touch control unit row, the third stem of one touch control unit is connected to the third stem of the other touch control unit.

14. A display device comprising a display panel and a touch sensor, the touch sensor being arranged on a light-outgoing side of the display panel; The display panel comprises a plurality of sub-pixels, the first touch control electrode and the second touch control electrode are both grid-shaped, and the meshes of the first touch control electrode and the second touch control electrode correspond to the sub-pixels, and a plurality of touch control units are located in a display area of the display panel; The touch sensor comprises a plurality of touch control units, the plurality of touch control units are arranged into touch control unit rows along a first direction, the plurality of touch control units are arranged into touch control unit columns along a second direction, the first direction intersects the second direction, one touch control unit comprises a first touch control electrode and a second touch control electrode arranged separately from each other, the first touch control electrode is one of a driving electrode and a sensing electrode, and the second touch control electrode is the other of the driving electrode and the sensing electrode; In one of the touch units, the first touch electrode comprises a first sub-electrode, a second sub-electrode and a bridge line, the bridge line is arranged in a layer different from the second touch electrode; in a plan view of the touch sensor, the first sub-electrode is located on one side of the second touch electrode, the second sub-electrode is located on the other side of the second touch electrode, and the bridge line is arranged to cross the second touch electrode, and the first sub-electrode is connected to the second sub-electrode through the bridge line. wherein, In one of the touch unit rows or the touch unit columns, one bridge line connects the first touch electrodes of at least two touch units.

15. The display device of claim 14, wherein, The bridge line is formed by a grid structure of multiple single lines crossing each other, and the single lines are arranged between the sub-pixels. In the width direction of the bridge line, the bridge line spans at least three sub-pixels.

16. The display device of claim 15, wherein, The width of the single line is between 2 microns and 8 microns.

17. The display device of claim 15, wherein, The display panel further comprises a non-display area outside the display area, the bridge line is located in the display area, the touch sensor further comprises a first signal line in the non-display area, the first signal line is arranged in the same layer as the bridge line, one first signal line is connected to one bridge line, and the first signal line is a solid wire.

18. The display device of claim 15, wherein, In one of the touch unit rows or the touch unit columns, one bridge line connects the first touch electrodes of all the touch units.

19. The display device of claim 18, wherein, The touch sensor further comprises an intermediate insulating layer, the intermediate insulating layer covers the bridge line, the first touch electrode and the second touch electrode are arranged on the side of the intermediate insulating layer away from the bridge line, and multiple vias are formed in the intermediate insulating layer. In one of the touch units, the first sub-electrode is connected to the bridge line through at least two vias.

20. The display device of claim 19, wherein, In one of the touch units, the second sub-electrode is connected to the bridge line through at least two vias.

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