Touch display panel and touch display device

Abstract

The application provides a touch display panel and a touch display device. The touch display panel comprises a display area and a binding area. The binding area comprises a first sub-binding area and a second sub-binding area. The first sub-binding area and the second sub-binding area are respectively located on two adjacent sides of the binding area. The first sub-binding area extends along the width direction of the binding area. The second sub-binding area extends along the length direction of the binding area. The first sub-binding area is provided with a plurality of chip binding pads. The chip binding pads are electrically connected with driving chips. The driving chips are used for providing touch driving signals to a plurality of touch electrodes and providing display driving signals to a plurality of pixel units. The second sub-binding area is provided with a plurality of touch detection pads. The touch detection pads are electrically connected with the touch electrodes. The touch detection pads are used for transmitting touch detection signals to the touch electrodes. Thus, the number of pads in the width direction of the binding area can be reduced, the width of the binding area can be reduced, and the narrow frame of the touch display device can be further realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of touch display, in particular to a touch display panel and a touch display device. BACKGROUND

[0002] With the development of science and technology, narrow frame touch display devices are more and more popular. The existing touch display panel usually sets a binding area at the lower frame, and binds a driving chip and a flexible circuit board in the binding area, so as to drive the touch display panel through the driving chip and the flexible circuit board to realize touch and display functions. However, the current touch display panel mostly has the problem of wide binding area, which affects the narrow frame of the touch display device. SUMMARY

[0003] Therefore, the present application is dedicated to providing a touch display panel and a touch display device to reduce the width of the binding area and realize the narrow frame of the touch display device.

[0004] In a first aspect, the present application provides a touch display panel, comprising a display area and a binding area; the display area comprises a plurality of touch electrodes and a plurality of pixel units;

[0005] The binding area comprises a first sub-binding area and a second sub-binding area, the first sub-binding area and the second sub-binding area are respectively located on the two adjacent sides of the binding area, the first sub-binding area extends along the width direction of the binding area, and the second sub-binding area extends along the length direction of the binding area;

[0006] The first sub-binding area is provided with a plurality of chip binding pads, the plurality of chip binding pads are arranged in sequence along the width direction of the binding area; the chip binding pad is used for electrically connecting with a driving chip, the driving chip is used for providing a touch driving signal to the plurality of touch electrodes and providing a display driving signal to the plurality of pixel units;

[0007] The second sub-binding area is provided with a plurality of touch detection pads, the plurality of touch detection pads are arranged in sequence along the length direction of the binding area; the touch detection pad is electrically connected with the touch electrode, and the touch detection pad is used for transmitting a touch detection signal to the touch electrode.

[0008] Optionally, the binding area further comprises a third sub-binding area, the third sub-binding area and the second sub-binding area are respectively located on the opposite sides of the binding area, and the third sub-binding area extends along the length direction of the binding area;

[0009] A plurality of touch detection pads are respectively arranged in the second sub-binding area and the third sub-binding area.

[0010] Optionally, the second sub-bonding area and the third sub-bonding area further have a fourth sub-bonding area, the first sub-bonding area, the second sub-bonding area and the third sub-bonding area are arranged at the periphery of the fourth sub-bonding area, and the traces electrically connected with the pads in the first sub-bonding area, the second sub-bonding area and the third sub-bonding area extend from the fourth sub-bonding area to the display area.

[0011] Optionally, the chip bonding pad is a strip-shaped pad extending along the length direction of the bonding area, and the touch detection pad is a strip-shaped pad extending along the width direction of the bonding area.

[0012] Optionally, the chip bonding pad comprises an input pad and an output pad, the input pad is used for electrically connecting with the input pin of the driving chip, and the output pad is used for electrically connecting with the output pin of the driving chip.

[0013] The output pad comprises a touch driving pad and a display driving pad, the touch driving pad is electrically connected with the touch electrode, the touch driving pad is used for transmitting the touch driving signal provided by the driving chip to the touch electrode, and the display driving pad is electrically connected with the pixel unit, and the display driving pad is used for transmitting the display driving signal provided by the driving chip to the pixel unit.

[0014] Optionally, the touch driving pad is electrically connected with the touch electrode through a first trace.

[0015] The touch detection pad is electrically connected with the first trace through a second trace, so as to be electrically connected with the touch electrode through the first trace.

[0016] Optionally, the bonding area further has an anti-static device, and the anti-static device comprises a transistor.

[0017] The first trace is electrically connected with the first end of the transistor, the second trace is electrically connected with the second end of the transistor, and the control end of the transistor is electrically connected with the driving chip; the driving chip is further used for controlling the transistor to be disconnected in the period of providing the touch driving signal to the touch driving pad.

[0018] Optionally, the touch display panel further comprises a first to-be-cut area.

[0019] The first to-be-cut area is located on the side of the second sub-bonding area away from the bonding area.

[0020] The first to-be-cut region has a plurality of first spare pads arranged in sequence along the length direction of the binding region; the plurality of first spare pads are respectively electrically connected with a plurality of touch detection pads of the second sub-binding region; and the spacing between the first spare pads is greater than the spacing between the touch detection pads of the second sub-binding region.

[0021] Optionally, the to-be-cut region further comprises a second to-be-cut region.

[0022] The second to-be-cut region is located on the side of the third sub-binding region away from the binding region.

[0023] The second to-be-cut region has a plurality of second spare pads arranged in sequence along the length direction of the binding region; the plurality of second spare pads are respectively electrically connected with a plurality of touch detection pads of the third sub-binding region; and the spacing between the second spare pads is greater than the spacing between the touch detection pads of the third sub-binding region.

[0024] In a second aspect, the present application provides a touch display device comprising the touch display panel as claimed in any one of the above.

[0025] The touch display panel and the touch display device provided by the present application, the touch display panel comprises a binding region, and the binding region comprises a first sub-binding region and a second sub-binding region; the chip binding pads are arranged in the first sub-binding region, the touch detection pads are arranged in the second sub-binding region, and the first sub-binding region and the second sub-binding region are respectively located on two adjacent sides of the binding region, so that the touch detection pads are no longer arranged on the same side of the binding region as the chip binding pads.

[0026] In addition, the first sub-binding region extends along the width direction of the binding region, and the second sub-binding region extends along the length direction of the binding region, so that the touch detection pads are no longer arranged in the sub-binding region extending along the width direction of the binding region, thereby reducing the number of pads in the width direction of the binding region, and further reducing the width of the binding region, and achieving further narrow frame of the touch display device.

[0027] In addition, the plurality of chip binding pads in the first sub-binding region extending along the width direction of the binding region are arranged in sequence along the width direction of the binding region, and the plurality of touch detection pads in the second sub-binding region extending along the length direction of the binding region are arranged in sequence along the length direction of the binding region, so that the occupied space of the pads in the first sub-binding region and the second sub-binding region is minimized, thereby reasonably arranging the space of the binding region, and further reducing the width of the binding region. BRIEF DESCRIPTION OF DRAWINGS

[0028] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description thereof taken in conjunction with the accompanying drawings, in which: The accompanying drawings provide a further understanding of the present application and constitute a part of this specification, illustrate embodiments of the present application and together with the description serve to explain the present application. In the drawings:

[0029] Figure 1 A top view of a touch display panel;

[0030] Figure 2 A top view of a touch display panel according to an embodiment of the present application;

[0031] Figure 3 A top view of a touch display panel according to another embodiment of the present application;

[0032] Figure 4 A top view of a touch display panel according to another embodiment of the present application;

[0033] Figure 5 A top view of a touch display panel according to another embodiment of the present application;

[0034] Figure 6 A top view of a touch display panel according to another embodiment of the present application;

[0035] Figure 7 A top view of a touch display panel according to another embodiment of the present application;

[0036] Figure 8 A top view of a touch display panel according to another embodiment of the present application;

[0037] Figure 9 A top view of a touch display panel according to another embodiment of the present application;

[0038] Figure 10 A top view of a touch display panel according to another embodiment of the present application; DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without any creative work fall within the protection scope of the present application.

[0040] In existing touch display devices, touch driving and display driving are usually implemented using two separate chips. However, in order to improve the integration of touch display devices, a current type of touch display device integrates the functions of the touch chip and the display chip into a single chip, such as a TDDI (Touch and Display Driver Integration) chip, and uses time-division scanning on a single chip to achieve time-division driving of touch and display.

[0041] Although the touch electrodes and pixel units in a touch display panel can share the chip bonding pads in the bonding area to receive the touch drive signals and display drive signals output by the chip in a time-sharing manner, a separate touch detection pad is still set in the bonding area in order to detect the touch function of the touch electrodes before bonding the chip and avoid the waste of chip and panel materials caused by discovering touch problems after bonding the chip.

[0042] Figure 1 This is a top view schematic diagram of a touch display panel, such as... Figure 1 As shown, the touch display panel includes a display area and a bonding area 10 located on one side of the display area. The bonding area 10 is provided with multiple pads, including not only chip bonding pads 101, but also touch detection pads 102, etc. The touch detection pads 102 are located on both sides of the chip bonding pads 101 so that the touch detection pads 102 are electrically connected to the touch detection chip.

[0043] The inventors discovered that since the touch detection pad 102 is idle after completing the touch detection function, that is, the touch detection pad 102 does not need to be bonded to the chip 103 and the flexible circuit board, nor does it need to transmit signals during the operation of the touch display panel, the touch detection pad 102 does not need to be set on both sides of the chip bonding pad 101. The pad arrangement in the bonding area can be optimized and the width of the bonding area can be reduced by changing the position of the touch detection pad 102.

[0044] Based on this, the present invention provides a pad arrangement scheme to reasonably arrange the space of the bonding area and reduce the width of the bonding area by placing the chip bonding pads and touch detection pads on different sides of the bonding area and arranging the chip bonding pads and touch detection pads in different directions.

[0045] As an optional implementation of the disclosed content of this invention, an embodiment of this invention provides a touch display panel, such as... Figure 2 As shown, Figure 2 This is a top view of a touch display panel provided in an embodiment of the present invention. The touch display panel includes a display area AA and a bonding area BD. Of course, the touch display panel also includes a non-display area NA.

[0046] In some embodiments, as shown in FIG. 1, the non-display area NA can be located at the four sides of the display area AA, but the present application is not limited thereto, and in other embodiments, the non-display area NA can be located only at the upper and lower sides of the display area AA, or only at the lower side of the display area AA to achieve a full-screen, which will not be described here again. Figure 2

[0047] The display area AA includes a plurality of touch electrodes and a plurality of pixel units. It should be noted that the structure of the touch electrodes and the pixel units is not shown in the drawings of the embodiments of the present application, and the touch electrodes can be any electrode structure and the pixel units can be any pixel structure. As long as the pixel units can be electrically connected to the display driving pads of the binding area through the gate lines and the data lines, and the touch units can be electrically connected to the touch driving pads of the binding area through the touch wires, and then can be electrically connected to the driving chip through these pads and receive the touch driving signals or display driving signals provided by the driving chip, the pad arrangement scheme provided by the embodiments of the present application can be adopted.

[0048] In the embodiments of the present application, the binding area BD includes a first sub-binding area BD1 and a second sub-binding area BD2, the first sub-binding area BD1 and the second sub-binding area BD2 are respectively located at the two adjacent sides of the binding area BD, the first sub-binding area BD1 extends along the width direction X of the binding area BD, and the second sub-binding area BD2 extends along the length direction Y of the binding area BD.

[0049] The first sub-binding area BD1 is provided with a plurality of chip binding pads 20, and the plurality of chip binding pads 20 are arranged in sequence along the width direction X of the binding area BD. The chip binding pad 20 is used to be electrically connected to the driving chip 21, and the driving chip 21 is used to provide the touch driving signal to the plurality of touch electrodes and provide the display driving signal to the plurality of pixel units.

[0050] The second sub-binding area BD2 is provided with a plurality of touch detection pads 22, and the plurality of touch detection pads 22 are arranged in sequence along the length direction Y of the binding area BD. The touch detection pad 22 is electrically connected to the touch electrode, and the touch detection pad 22 is used to transmit the touch detection signal to the touch electrode.

[0051] It should be noted that the touch detection pad 22 transmits the touch detection signal to the touch electrode only before the binding area BD binds the driving chip 21, and detects the touch function of the touch electrode. After the binding area BD binds the driving chip 21, the driving chip 21 transmits the touch driving signal to the touch electrode through the chip binding pad 20 to drive the touch electrode to detect the touch position and the like.

[0052] ​In the embodiment of the present application, the chip bonding pads 20 are arranged in the first sub-bonding area BD1, the touch detection pads 22 are arranged in the second sub-bonding area BD2, and the first sub-bonding area BD1 and the second sub-bonding area BD2 are respectively located on two sides adjacent to the bonding area BD, so that the touch detection pads 22 are no longer arranged on the same side of the bonding area BD as the chip bonding pads 20.

[0053] In addition, the first sub-bonding area BD1 extends along the width direction X of the bonding area BD, and the second sub-bonding area BD2 extends along the length direction Y of the bonding area BD, so that the touch detection pads 22 are no longer arranged in the sub-bonding area on the side extending along the width direction X of the bonding area BD, thereby reducing the number of pads in the width direction X of the bonding area BD, and further reducing the width of the bonding area BD, and achieving further narrow frame of the touch display device. The width of the bonding area BD refers to the length of the bonding area BD in the width direction X.

[0054] In addition, the first sub-bonding area BD1 extends along the width direction X of the bonding area BD, and the second sub-bonding area BD2 extends along the length direction Y of the bonding area BD, so that the touch detection pads 22 are no longer arranged in the sub-bonding area on the side extending along the width direction X of the bonding area BD, thereby reducing the number of pads in the width direction X of the bonding area BD, and further reducing the width of the bonding area BD, and achieving further narrow frame of the touch display device. The width of the bonding area BD refers to the length of the bonding area BD in the width direction X.

[0055] It should be noted that the first sub-bonding area BD1 can be located on the side of the bonding area BD away from the display area AA, so that the chip bonding pads 20 in the first sub-bonding area BD1 are bonded with the driving chip 21. As shown in Figure 2 the side of the bonding area BD away from the display area AA is the lower side of the bonding area BD, and the second sub-bonding area BD2 is the left side or the right side of the bonding area BD.

[0056] In some embodiments of the present application, as shown in Figure 2 the bonding area BD further includes a third sub-bonding area BD3, the third sub-bonding area BD3 and the second sub-bonding area BD2 are respectively located on opposite sides of the bonding area BD, such as left and right sides, and the third sub-bonding area BD3 extends along the length direction Y of the bonding area BD. In addition, the plurality of touch detection pads 22 are respectively arranged in the second sub-bonding area BD2 and the third sub-bonding area BD3.

[0057] It can be understood that the touch control lead wire electrically connected with the touch control electrode can extend from the non-display area AA on the left and right sides of the touch control display panel to the binding area BD, and based on this, the second sub-binding area BD2 and the third sub-binding area BD3 are arranged on the left and right sides of the binding area BD respectively, and the touch control detection pads corresponding to the touch control lead wires on the left and right sides can be arranged.

[0058] Of course, the present application is not limited to this, and in other embodiments, as shown in Figure 3 Figure 3 The top view structural schematic diagram of the touch control display panel provided by another embodiment of the present application is shown in the figure, the binding area BD only has the first sub-binding area BD1 and the second sub-binding area BD2, and part of the touch control detection pads 22 are arranged in the first sub-binding area BD1, and part of the touch control detection pads 22 are arranged in the second sub-binding area BD2, so that the width of the binding area BD can be reduced to a certain extent.

[0059] It can be understood that the touch control lead wire electrically connected with the touch control electrode can also extend from the non-display area AA on one side of the touch control display panel to the binding area BD, and at this time, the touch control detection pads 22 can be arranged in the second sub-binding area BD2.

[0060] In some embodiments of the present application, as shown in Figure 2 The fourth sub-binding area BD4 is arranged between the second sub-binding area BD2 and the third sub-binding area BD3, and the first sub-binding area BD1, the second sub-binding area BD2 and the third sub-binding area BD3 are arranged on the periphery of the fourth sub-binding area BD4, and the wires electrically connected with the pads in the first sub-binding area BD1, the second sub-binding area BD2 and the third sub-binding area BD3 extend from the fourth sub-binding area BD4 to the display area AA, so as to further reasonably arrange the space of the binding area BD and reduce the width of the binding area BD.

[0061] Of course, in other embodiments, as shown in Figure 3 The first sub-binding area BD1 and the second sub-binding area BD2 can be arranged on the periphery of the fourth sub-binding area BD4, and only the wires electrically connected with the pads in the first sub-binding area BD1 and the second sub-binding area BD2 extend from the fourth sub-binding area BD4 to the display area AA.

[0062] In some embodiments of the present application, as shown in Figure 2 The chip binding pad 20 is a strip-shaped pad extending along the length direction Y of the binding area BD, and the touch control detection pad 22 is a strip-shaped pad extending along the width direction X of the binding area BD, so as to reduce the pad spacing and further reduce the width of the binding area BD.

[0063] Of course, the present application is not limited to this, and in other embodiments, in order to improve the binding yield of the chip binding pad 20 and the driving chip 21, as shown in​Figure 4 As shown, Figure 4 The diagram shows a top view of a touch display panel according to another embodiment of the present invention. The chip bonding pad 20 can also be a triangular pad extending along the length direction Y of the bonding area BD, and the touch detection pad 22 can also be a triangular pad extending along the width direction X of the bonding area BD. In other embodiments, the chip bonding pad 20 and the touch detection pad 22 can also be pads of other shapes, which will not be described further here.

[0064] In some embodiments of the present invention, the chip bonding pad 20 includes an input pad and an output pad. The input pad is used to electrically connect to the input pin of the driver chip 21, and the output pad is used to electrically connect to the output pin of the driver chip 21. Furthermore, the output pad includes a touch driver pad and a display driver pad. The touch driver pad is electrically connected to the touch electrode and is used to transmit the touch driving signal provided by the driver chip 21 to the touch electrode. The display driver pad is electrically connected to the pixel unit and is used to transmit the display driving signal provided by the driver chip 21 to the pixel unit. It is understood that the input pad is also electrically connected to a flexible circuit board (not shown in the figure), so that the flexible circuit board is electrically connected to the driver chip 21 through the input pad and inputs signals to the driver chip 21.

[0065] In some embodiments of the present invention, the driver chip 21 is a TDDI chip, and the touch driver pad and the display driver pad can reuse the pad. That is, the same pad is connected to the traces electrically connected to the pixel unit and the traces electrically connected to the touch electrode respectively through a multiplexing circuit, so as to provide driving signals to the pixel unit and the touch electrode in a time-division manner, thereby realizing the time-division driving of display and touch.

[0066] Since both the touch driver pad and the touch detection pad are electrically connected to the touch electrode, in some embodiments of the present invention, the touch driver pad and the touch detection pad can be electrically connected to the touch electrode through traces respectively. Alternatively, in order to save traces and reduce costs, the touch detection pad can be electrically connected to the touch driver pad or its trace through another trace to achieve the electrical connection between the touch detection pad and the touch electrode.

[0067] like Figure 5 As shown, Figure 5 The above view of the touch display panel provided in another embodiment of the present invention shows that the touch driving pad 200 is electrically connected to the touch electrode through the first trace 201, and the touch detection pad 22 is electrically connected to the first trace 201 through the second trace 220, so as to be electrically connected to the touch electrode through the first trace 201.

[0068] On this basis, in order to prevent the static electricity of the touch detection pad 22 and the periphery from interfering with the signal on the first trace 201, a transistor is arranged in the binding area BD. Figure 6 Figure 6 As shown in the top view structural schematic diagram of the touch display panel provided by another embodiment of the present application,

[0069] As shown in the top view structural schematic diagram of the touch display panel provided by another embodiment of the present application, Figure 6 The first trace 201 is electrically connected with the first end of the transistor, the second trace 220 is electrically connected with the second end of the transistor, and the control end of the transistor is electrically connected with the driving chip 21. The driving chip 21 is also used for controlling the transistor to be disconnected in the period of providing the touch detection pad with the touch detection signal.

[0070] In order to reduce the number of pads electrically connected with the driving chip 21, the control end of the transistor can be electrically connected with the touch driving pad 200 through the first trace 201, and the driving chip 21 can transmit the control signal to the control end of the transistor through the touch driving pad 200. For example, the touch driving pad 200 outputs a high-level signal to the touch electrode for touch detection, and the transistor is an NMOS transistor whose control end is turned on when the control end is high. Of course, the transistor can also be a PMOS transistor whose control end is turned on when the control end is low, which will not be described here.

[0071] Taking the transistor as a PMOS transistor as an example, in the touch detection period, the control end of the transistor can be electrically connected with the ground end to turn on the transistor, so that the line where the anti-static device K is located is a passageway, and the touch detection pad 22 transmits the touch detection signal to the touch electrode. In the touch driving period, the driving chip 21 can pull up the potential of the control end of the transistor to turn off the transistor, so that the line where the anti-static device K is located is a circuit, and the first trace 201 and the second trace 220 are disconnected, so as to prevent the static electricity on the touch detection pad 22 from interfering with the signal on the first trace 201.

[0072] As shown in the top view structural schematic diagram of the touch display panel provided by another embodiment of the present application, Figure 7 Figure 7 As shown in the top view structural schematic diagram of the touch display panel provided by another embodiment of the present application, in the touch detection period, the touch detection chip 23 can transmit the touch detection signal to the touch detection pad 22. The touch detection chip 23 can be electrically connected with the touch detection pad 22 through the way of piercing.

[0073] ​​Since the way of pricking has requirements on the interval of the touch detection pads 22, if the interval of the touch detection pads 22 is small, the electrical connection between the touch detection pads 22 and the touch detection chip 23 will be affected, therefore, in some embodiments of the present application, as shown in FIG. 2, Figure 8 Figure 8 FIG. 3 is a top view of a touch display panel according to another embodiment of the present application, the touch display panel further comprises a first cutting area DQ1, the first cutting area DQ1 is located on a side of the second sub-bonding area BD2 away from the bonding area BD.

[0074] In the first cutting area DQ1, a plurality of first spare pads 241 are arranged along the length direction Y of the bonding area BD, and the plurality of first spare pads 241 are respectively electrically connected to the plurality of touch detection pads 22 of the second sub-bonding area BD2, so that the driving detection chip 23 is electrically connected to the touch detection pads 22 of the second sub-bonding area BD2 through the first spare pads 241, and the interval D2 between the first spare pads 241 is greater than the interval D1 between the touch detection pads 22 of the second sub-bonding area BD2, so as to meet the pricking requirement.

[0075] In some other embodiments of the present application, as shown in FIG. 4, Figure 9 Figure 9 FIG. 5 is a top view of a touch display panel according to another embodiment of the present application, the cutting area further comprises a second cutting area DQ2, the second cutting area DQ2 is located on a side of the third sub-bonding area BD3 away from the bonding area BD.

[0076] In the second cutting area DQ2, a plurality of second spare pads 242 are arranged along the length direction Y of the bonding area BD, and the plurality of second spare pads 242 are respectively electrically connected to the plurality of touch detection pads 22 of the third sub-bonding area BD3, so that the driving detection chip 23 is electrically connected to the touch detection pads 22 of the third sub-bonding area BD3 through the second spare pads 242, and the interval between the second spare pads 242 is greater than the interval between the touch detection pads 22 of the third sub-bonding area BD3.

[0077] It should be noted that the first cutting area DQ1 and the second cutting area DQ2 can only have a substrate of the touch display panel, such as a glass substrate. That is, the first spare pads 241 and the second spare pads 242 are located on the glass substrate and are electrically connected to the touch detection pads 22 and the touch detection chip 23 through the traces. Of course, the present application is not limited thereto, and in some other embodiments, the first spare pads 241 and the second spare pads 242 can also be located on part of the film layers of the touch display panel.

[0078] ​​It should be further explained that after the touch control electrode is detected, the first to-be-cut region DQ1 and the second to-be-cut region DQ2 are cut off before or after the bonding driving chip 21 is bonded, so that the bonding region BD and the structure inside the bonding region BD are bent to the back of the touch display panel, so as to reduce the width of the lower frame of the touch display panel.

[0079] As another optional implementation of the present disclosure, the embodiment of the present application provides a touch display device, which comprises the touch display panel provided by any one of the above embodiments. Since the width of the bonding region of the lower frame of the touch display panel is small, the width of the lower frame of the touch display device can be made narrow, and further narrow frame of the touch display device can be realized.

[0080] As shown in Figure 10 , Figure 10 The structure diagram of the touch display device provided by one embodiment of the present application is shown, which can be a smart phone, a tablet computer or a digital camera, and the like, and will not be described here.

[0081] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts of each embodiment can be referred to each other. The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications of the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A touch display panel, characterized in that, The display area comprises a plurality of touch electrodes and a plurality of pixel units; The binding area comprises a first sub-binding area and a second sub-binding area, the first sub-binding area and the second sub-binding area are respectively located on the two adjacent sides of the binding area, the first sub-binding area extends along the width direction of the binding area, and the second sub-binding area extends along the length direction of the binding area; The first sub-binding area is provided with a plurality of chip binding pads, the plurality of chip binding pads are arranged in sequence along the width direction of the binding area; the chip binding pad is used for electrically connecting with a driving chip, the driving chip is used for providing a touch driving signal to the plurality of touch electrodes and providing a display driving signal to the plurality of pixel units; The second sub-binding area is provided with a plurality of touch detection pads, the plurality of touch detection pads are arranged in sequence along the length direction of the binding area; the touch detection pad is electrically connected with the touch electrode, and the touch detection pad is used for transmitting a touch detection signal to the touch electrode and detecting the touch function of the touch electrode; the length direction of the binding area is the direction in which the display area points to the binding area; the width direction of the binding area intersects with the length direction of the binding area; The binding area further comprises a third sub-binding area, the third sub-binding area and the second sub-binding area are respectively located on the opposite sides of the binding area, the third sub-binding area extends along the length direction of the binding area, and a plurality of touch detection pads are respectively arranged in the second sub-binding area and the third sub-binding area; The second sub-binding area and the third sub-binding area further have a fourth sub-binding area, the second sub-binding area, the third sub-binding area and the fourth sub-binding area are located between the first sub-binding area and the display area, the first sub-binding area, the second sub-binding area and the third sub-binding area are arranged on the periphery of the fourth sub-binding area, and the wires electrically connected with the pads in the first sub-binding area, the second sub-binding area and the third sub-binding area extend from the fourth sub-binding area to the display area. 2.The touch display panel of claim 1, wherein, The chip binding pad is a strip-shaped pad extending along the length direction of the binding area; the touch detection pad is a strip-shaped pad extending along the width direction of the binding area. 3.The touch display panel of claim 1, wherein, The chip binding pad comprises an input pad and an output pad; the input pad is used for electrically connecting with an input pin of the driving chip, and the output pad is used for electrically connecting with an output pin of the driving chip; The output pad comprises a touch driving pad and a display driving pad; the touch driving pad is electrically connected with the touch electrode, and the touch driving pad is used for transmitting the touch driving signal provided by the driving chip to the touch electrode; the display driving pad is electrically connected with the pixel unit, and the display driving pad is used for transmitting the display driving signal provided by the driving chip to the pixel unit. 4.The touch display panel of claim 3, wherein, The touch driving pad is electrically connected with the touch electrode through a first wire; The touch detection pad is electrically connected with the first wire through a second wire, so as to be electrically connected with the touch electrode through the first wire. 5.The touch display panel of claim 4, wherein, The binding area also has an anti-static device, the anti-static device comprising a transistor; The first wire is electrically connected to a first end of the transistor, the second wire is electrically connected to a second end of the transistor, and a control end of the transistor is electrically connected to the driving chip; the driving chip is also configured to control the transistor to be turned off during a period in which a touch driving signal is provided to the touch driving pad. 6.The touch display panel of claim 1, wherein, The touch display panel also comprises a first to-be-cut region; The first to-be-cut region is located on a side of the second sub-binding area that is away from the binding area; The first to-be-cut region has a plurality of first spare pads, the plurality of first spare pads are arranged in sequence along a length direction of the binding area; the plurality of first spare pads are respectively electrically connected to a plurality of touch detection pads of the second sub-binding area; a spacing between the first spare pads is greater than a spacing between the touch detection pads of the second sub-binding area. 7.The touch display panel of claim 6, wherein, The to-be-cut region also comprises a second to-be-cut region; The second to-be-cut region is located on a side of the third sub-binding area that is away from the binding area; The second to-be-cut region has a plurality of second spare pads, the plurality of second spare pads are arranged in sequence along a length direction of the binding area; the plurality of second spare pads are respectively electrically connected to a plurality of touch detection pads of the third sub-binding area; a spacing between the second spare pads is greater than a spacing between the touch detection pads of the third sub-binding area.

8. A touch display device, comprising: The touch display panel comprises any one of claims 1-7.

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