Touch display panel and display device

Abstract

The application discloses a touch display panel and a display device. The touch display panel comprises a substrate, a plurality of touch electrodes arranged on the substrate, a plurality of touch wires, a driving chip and a plurality of detection lines. Each touch wire is connected with a corresponding touch electrode. The driving chip comprises a plurality of first output terminals and a plurality of second output terminals. The first output terminals output display signals in a display stage. The second output terminals are connected with the touch wires one by one. Each detection line is connected with a corresponding touch wire at a side close to the driving chip. The plurality of detection lines extend from two sides of the driving chip in a direction away from the touch electrodes. The application uses the driving chip integrating the touch function and the display function, and facilitates the touch pseudo-voltage test when the touch display panel is in a cell state.

Description

TECHNICAL FIELD

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

[0002] The touch structure of the existing touch display panel includes an externally mounted touch structure, a touch on cell and a touch in cell. At present, in some touch display panels, a driving chip integrating touch function and display function is adopted to save production cost. However, since the pins of the driving chip are directly bound at the lower frame of the touch display panel, it is inconvenient to perform touch pseudo-pressure test on the touch display panel in the Cell state (state when the driving chip is not bound). SUMMARY

[0003] The present application provides a touch display panel and a display device to solve the technical problem that it is difficult to perform touch pseudo-pressure test in the Cell state when the touch display panel adopts a driving chip integrating touch function and display function.

[0004] The present application provides a touch display panel, which comprises:

[0005] a substrate;

[0006] a plurality of touch electrodes disposed on the substrate;

[0007] a plurality of touch wires disposed on the substrate, each of the touch wires being connected with a corresponding touch electrode;

[0008] a driving chip bound on the substrate, the driving chip comprising a plurality of first output terminals and a plurality of second output terminals, the first output terminals outputting display signals in a display stage, and the second output terminals being connected with the touch wires one by one; and

[0009] a plurality of detection lines disposed on the substrate, each of the detection lines being connected with a corresponding touch wire at a side close to the driving chip, and the detection lines extending from both sides of the driving chip in a direction away from the touch electrodes.

[0010] Optionally, in some embodiments of the present application, the driving chip has a first side and a second side adjacent to each other, the first side extends in a direction perpendicular to the extension direction of the detection lines, and the first side is disposed close to the touch electrodes.

[0011] The first side includes a center portion and end portions on both sides of the center portion, the first output terminal is arranged at the center portion, and the second output terminal is arranged at the second side and / or the end portion.

[0012] Optionally, in some embodiments of the present application, the touch display panel further includes a virtual terminal, and the virtual terminal is arranged at the end portion, and the second output terminal is arranged at the second side.

[0013] Optionally, in some embodiments of the present application, the touch electrode includes a plurality of first touch electrodes and a plurality of second touch electrodes arranged in an insulating manner, the plurality of first touch electrodes are arranged in a first direction, and the plurality of second touch electrodes are arranged in a second direction intersecting the first direction.

[0014] The touch wire includes a plurality of first touch wires and a plurality of second touch wires, each first touch wire is connected with a corresponding first touch electrode, and each second touch wire is connected with a corresponding second touch electrode.

[0015] Optionally, in some embodiments of the present application, the touch display panel includes a touch area and a wire area arranged around the touch area, and the wire area includes a first wire area and a second wire area located on opposite sides of the touch area.

[0016] Part of the first touch wires are located in the first wire area, and the other part of the first touch wires are located in the second wire area, the first touch wires located in the first wire area are connected with the second output terminal located on the left side of the center portion, and the first touch wires located in the second wire area are connected with the second output terminal located on the right side of the center portion.

[0017] Optionally, in some embodiments of the present application, each first touch wire includes a first wire and a second wire connected with each other, the first wire is connected with a corresponding first touch electrode, and the second wire is connected with a corresponding second output terminal.

[0018] The first wire includes a first branch line, a second branch line and a third branch line, the first branch line is connected with the first touch electrode, the second branch line connects the first branch line and the third branch line, the third branch line is connected with the second wire, the first branch line and the third branch line both extend along the first direction, and the third branch line is located on a side of the first branch line close to the driving chip.

[0019] Optionally, in some embodiments of the present application, the second wire includes a fourth branch line and a fifth branch line connected with each other.

[0020] The fourth branch is connected with the second branch, the fifth branch is connected with the corresponding second output terminal, and the fifth branch extends along the first direction or the second direction.

[0021] Optionally, in some embodiments of the present application, the second touch wire includes a third wire and a fourth wire, and the fourth wire includes a sixth branch and a seventh branch.

[0022] The third wire is connected with one end of the second touch electrode close to the driving chip, the sixth branch connects the third wire and the seventh branch, the seventh branch is connected with the second output terminal, and the seventh branch extends along the first direction or the second direction.

[0023] Optionally, in some embodiments of the present application, the touch display panel further includes a test terminal, the test terminal is arranged on the side of the driving chip away from the touch electrode, and the test terminal is connected with the touch wire.

[0024] Optionally, in some embodiments of the present application, the touch display panel further includes a plurality of switching elements and a control signal line, the control end of the switching element is connected with the control signal line, the input end of the switching element is connected with the corresponding test terminal, and the output end of the switching element is connected with the corresponding touch wire.

[0025] Correspondingly, the present application also provides a display device, which includes a touch display panel and a cover plate arranged above the touch display panel, and the touch display panel is the touch display panel of any one of the above-mentioned embodiments.

[0026] The present application provides a touch display panel and a display device. The touch display panel includes a substrate, a plurality of touch electrodes arranged on the substrate, a plurality of touch wires, a driving chip, and a plurality of detection lines. Each touch wire is connected with a corresponding touch electrode. The driving chip includes a plurality of first output terminals and a plurality of second output terminals. The first output terminal outputs a display signal in a display stage, and the second output terminal is connected with the touch wire one by one. Each detection line is connected with one end of the corresponding touch wire close to the driving chip, and the plurality of detection lines extend from both sides of the driving chip in a direction away from the touch electrode. The present application uses a driving chip integrating touch function and display function. By arranging the detection lines on both sides of the driving chip and extending in a direction away from the touch electrode, the touch false pressure test can be conveniently performed when the touch display panel is in a cell state. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments description. Obviously, the drawings in the following description only some of the embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor.

[0028] Figure 1 is a first plane schematic diagram of the touch display panel provided by the present application;

[0029] Figure 2 is a cross-sectional structure schematic diagram of the touch display panel provided by the present application;

[0030] Figure 3 is a first plane schematic diagram of the touch display panel provided by the present application; Figure 1 is an enlarged schematic diagram of A in the figure;

[0031] Figure 4 is a first plane schematic diagram of the touch display panel provided by the present application; Figure 1 is a local structure schematic diagram in the figure;

[0032] Figure 5 is a second plane schematic diagram of the touch display panel provided by the present application;

[0033] Figure 6 is a local structure schematic diagram in the figure; Figure 5

[0034] Figure 7 is a third plane schematic diagram of the touch display panel provided by the present application;

[0035] Figure 8 is an enlarged schematic diagram of A in the figure; Figure 7

[0036] Figure 9 is a fourth plane schematic diagram of the touch display panel provided by the present application;

[0037] Figure 10 is a structure schematic diagram of the display device provided by the present application. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0039] ​​In the description of the present application, it is to be understood that the terms "first" and "second" are used only for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" and the like can be explicitly or implicitly included one or more of the features, and therefore cannot be construed as a limitation on the present application.

[0040] The present application provides a touch display panel 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 of the present application.

[0041] Please refer to Figure 1 , Figure 1 is a first plane schematic diagram of the touch display panel provided by the present application. In the embodiments of the present application, the touch display panel 100 includes a substrate 10, a plurality of touch electrodes 110, a plurality of touch wires 30, a driving chip 20 and a plurality of detection lines 16.

[0042] Among them, the touch electrodes 110 are arranged on the substrate 10. Among them, the plurality of touch wires 30 are arranged on the substrate 10 in intervals. Each touch wire 30 is connected with a corresponding touch electrode 110.

[0043] Among them, the driving chip 20 is bound on the substrate 10. The driving chip 20 includes a plurality of first output terminals a and a plurality of second output terminals b. The first output terminal a outputs a display signal in a display stage. Each second output terminal b is connected with a corresponding touch wire 30.

[0044] Among them, the plurality of detection lines 16 are arranged on the substrate 10. Each detection line 16 is connected with a corresponding touch wire 30 at a side close to the driving chip 20. The plurality of detection lines 16 extend from both sides of the driving chip 20 in a direction away from the touch electrodes 110.

[0045] The embodiments of the present application use the driving chip 20 integrating touch function and display function in the touch display panel 100, which can reduce the production cost of the touch display panel 100 and simplify the process. And by arranging the detection lines 16 on both sides of the driving chip 20 and extending in a direction away from the touch electrodes 110, it is convenient to perform touch false pressure test when the touch display panel 100 is in Cell state.

[0046] It can be understood that when the touch display panel 100 is in Cell state, the driving chip 20 has not been bound to the substrate 10. Therefore, it is impossible to detect whether the touch function is normal by sending a touch signal through the driving chip 20. In this case, first, the false pressure flexible circuit board is pressed on the test terminal (a) one by one, and then the test terminal (a) is connected with the touch wire 30 through the false pressure flexible circuit board. Figure 1The false pressure flexible circuit board is not connected with the test terminal by the conductive glue, but is just pressed on the test terminal, and the electrical connection is maintained. Then the other end of the false pressure flexible circuit board is connected with the chip to detect the touch function.

[0047] It should be noted that "multiple" appearing in the embodiments of the present application means at least two. The first direction and the second direction can be perpendicular to each other or can only intersect without being perpendicular.

[0048] In the embodiments of the present application, the display signal can be a data signal, a scanning signal, etc. That is, the driving chip 20 provided by the embodiments of the present application can also simultaneously contain a source driving chip and a GOA (Gate Driver On Array, array substrate gate driving circuit) control function.

[0049] In an embodiment of the present application, the touch display panel 100 can be a flexible OLED (Organic Light-Emitting Diode) touch display panel. The substrate 10 can be a flexible substrate capable of being bent, folded or rolled. For example, the substrate 10 can include one layer, two layers or more than two layers of flexible PI (Polyimide). The substrate 10 can also be made of an insulating material such as a polymer resin.

[0050] In an embodiment of the present application, the driving chip 20 can be bent to the back of the substrate 10 by bending the substrate 10.

[0051] In the embodiments of the present application, the touch display panel 100 can be a self-capacitance touch panel and a mutual-capacitance touch panel.

[0052] In an embodiment of the present application, the touch display panel 100 is a self-capacitance touch display panel. The touch electrode 110 serves as a scanning electrode and forms a capacitor with the ground.

[0053] In an embodiment of the present application, the touch display panel 100 is a mutual-capacitance touch display panel. The touch electrode 110 includes a plurality of first touch electrodes 11 and a plurality of second touch electrodes 12 which are insulatively arranged. The plurality of first touch electrodes 11 are arranged at intervals along the first direction Y. The plurality of second touch electrodes 12 are arranged at intervals along the second direction X. The second direction X intersects the first direction Y. The touch wire 30 includes a plurality of first touch wires 14 arranged at intervals and a plurality of second touch wires 15 arranged at intervals. Each first touch wire 14 is connected with a corresponding first touch electrode 11. Each second touch wire 15 is connected with a corresponding second touch electrode 12.

[0054] Currently, in a conventional mutual-capacitance touch on cell display screen, a DIC (Drive Integrated Circuit, display driving chip) and a TIC (Touch Integrated Circuit, touch chip) are two independent chips. The DIC is usually directly bound to the lower frame area of the display panel, and the TIC is located on a flexible circuit board. For a mutual-capacitance touch display panel provided with two independent DICs and TICs, the flexible circuit board includes not only signal lines and components required for display, but also the TIC, related components, and signal lines required for touch. This finally leads to a higher production cost of the touch display panel and a more complex manufacturing process.

[0055] Therefore, in the embodiment of the present application, the touch display panel 100 is a mutual-capacitance touch display panel. The first output terminal a of the driving chip 20 can output a display signal in a display stage to drive the touch display panel 100 to display normally. The second output terminal b of the driving chip 20 is connected with the first touch wire 14 or the second touch wire 15, and can transmit a touch signal to realize the touch function of the display panel. That is, the embodiment of the present application provides a driving chip 20 integrated with touch and display functions in a mutual-capacitance touch display panel. Therefore, the DIC and the TIC in the related mutual-capacitance touch display panel are integrated in one chip, which can reduce the production cost of the touch display panel 100 and simplify the process.

[0056] The following embodiments of the present application are all described by taking the touch display panel 100 as a mutual-capacitance touch display panel, but this cannot be understood as a limitation of the present application.

[0057] In the embodiment of the present application, the first touch electrode 11 and the second touch electrode 12 can be a hollow structure to improve the aperture ratio and light transmittance of the touch display panel 100. Specifically, the touch display panel 100 further includes a plurality of sub-pixel units (not shown in the figure) arranged in an array. The sub-pixel unit can be a conventional RGB sub-pixel unit or an RGBW sub-pixel unit, which is not limited in the present application. The orthographic projection of the first touch electrode 11 and the second touch electrode 12 on the substrate 10 is arranged to be staggered with the orthographic projection of the sub-pixel unit on the substrate 10, further improving the aperture ratio of the touch display panel 100.

[0058] In the embodiment of the present application, the first touch electrode 11 is a driving electrode TX, and the second touch electrode 12 is a sensing electrode RX. Alternatively, the first touch electrode 11 is a sensing electrode RX, and the second touch electrode 12 is a driving electrode TX.

[0059] Please refer to Figure 1 and Figure 2 , Figure 2is a sectional structure schematic diagram of the touch display panel provided in the present application. In the embodiment of the present application, the touch display panel 100 further comprises an encapsulation layer 44, a protection layer 45 disposed on the encapsulation layer 44, a bridging conductive layer 46 disposed on the protection layer 45, an insulating layer 47 disposed on the bridging conductive layer 46, and a touch layer 48 disposed on the insulating layer 47.

[0060] The touch layer 48 comprises a first touch electrode 11 and a second touch electrode 12. The second touch electrode 12 comprises a plurality of sub-touch electrodes 120. The bridging conductive layer 46 comprises a plurality of conductive bridges 460. The insulating layer 47 is provided with a via hole 47A. Each sub-touch electrode 120 is connected with a conductive bridge 460 through the via hole 47A. Adjacent sub-touch electrodes 120 are connected through a corresponding conductive bridge 460.

[0061] In the embodiment of the present application, the adjacent sub-touch electrodes 120 are connected together through the conductive bridges 460, so that the communication of each second touch electrode 12 is realized. Thus, the first touch electrode 11 and the second touch electrode 12 are insulatively arranged on the same layer, so that the touch precision of the touch display panel 100 is improved.

[0062] Further, in the embodiment of the present application, in the direction from the substrate 10 to the touch layer 48, the touch display panel 100 further comprises a buffer layer 31, an active layer 32, a first gate insulating layer 33, a gate metal layer 34, a second gate insulating layer 35, a conductive metal layer 36, an interlayer dielectric layer 37, a source-drain metal layer 38, a planarization layer 39, a pixel electrode layer 40, a pixel definition layer 41, a light-emitting functional layer 42, and a cathode layer 43, which are sequentially arranged in a stack. The encapsulation layer 44 is disposed on one side of the cathode layer 43 away from the substrate 10. In addition, the touch display panel 100 further comprises a passivation layer 49 disposed on the touch layer 48, so as to protect the touch layer 48.

[0063] The pixel definition layer 41 is provided with an opening. The opening exposes a side surface of the pixel electrode layer 40 away from the substrate 10. The light-emitting functional layer 42 is disposed in the opening. The light-emitting functional layer 42 comprises, but is not limited to, a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, and an electron injection layer. The encapsulation layer 44 comprises, but is not limited to, a first inorganic layer 441, an organic layer 442, and a second inorganic layer 443, which are alternately arranged.

[0064] It should be noted that, Figure 2 The structure schematic diagram of the touch display panel 100 provided in the embodiment of the present application is only used for facilitating the description of the structure of the first touch electrode 11 and the second touch electrode 12, and cannot be understood as a limitation on the present application.

[0065] Please refer to Figure 1 and Figure 3 , Figure 3This application provides Figure 1 Enlarged schematic diagram at point A. In this embodiment, the driver chip 20 has a first side 21 and a second side 22 that are adjacent to each other. The first side 21 extends along the second direction X and is disposed close to the touch electrode 110.

[0066] The first side 21 includes a central portion 201 and end portions 202 located on both sides of the central portion 201. A first output terminal a is disposed in the central portion 201. A second output terminal b is disposed in the second side 22 and / or the end portions 202.

[0067] This embodiment of the application, by providing a first output terminal a at the center 201 of the first side 21 and a second output terminal b at the end 202 and / or the second side 22, can fully utilize the wiring space of the driver chip 20, making it possible to integrate the DIC and TIC together. Furthermore, by separating the first output terminal a and the second output terminal b into different areas, interference between the display signals and touch signals output by the driver chip 20, or crosstalk between touch-related traces and display-related traces, can be avoided.

[0068] In this embodiment, multiple second output terminals b can be arranged in a row along the first direction Y at the end 202. Alternatively, multiple second output terminals b can be arranged in two or more rows along the first direction Y at the end 202. Multiple second output terminals b can be arranged in a column along the second direction X at the second side 22. Alternatively, multiple second output terminals b can be arranged in two or more columns along the second direction X at the second side 22. The specific arrangement can be determined according to the requirements of the touch display panel 100.

[0069] For example, when multiple second output terminals b are arranged in two rows, the second output terminals b located in different rows are staggered. This is so that each first touch line 14 or second touch line 15 can be connected to the corresponding second output terminal b, thereby avoiding signal short circuits.

[0070] Similarly, in this embodiment, the plurality of first output terminals a can be arranged in a row along the first direction Y in the central portion 201. The plurality of first output terminals a can also be arranged in two or more rows along the first direction Y in the central portion 201, depending on the requirements of the touch display panel 100.

[0071] In this embodiment, the touch display panel 100 further includes a third side 23 and a fourth side 24. The third side 23 is disposed opposite to the first side 21. The fourth side 24 is disposed opposite to the second side 22.

[0072] In some embodiments, the partial second output terminal b is disposed at the fourth side edge 24. The driving chip 20 further comprises a plurality of input terminals c. The plurality of input terminals c are disposed at the third side edge 23. The input terminals c are mainly used for receiving external input power supply signals and the like to the driving chip 20.

[0073] Please continue to refer to Figure 1 In the embodiments of the present application, the touch display panel 100 comprises a touch area 100A and a wiring area 100B disposed around the touch area 100A. The wiring area 100B comprises a first wiring area 101B and a second wiring area 102B located at opposite sides of the touch area 100A.

[0074] Part of the first touch wiring 14 is located at the first wiring area 101B, and the other part of the first touch wiring 14 is located at the second wiring area 102B. Each second touch wiring 15 is connected to the corresponding second touch electrode 12 at the end close to the driving chip 20. The first touch wiring 14 located at the first wiring area 101B is connected to the second output terminal b located at the left side of the center part 201. The first touch wiring 14 located at the second wiring area 102B is connected to the second output terminal b located at the right side of the center part 201.

[0075] In the embodiments of the present application, the plurality of first touch wirings 14 are disposed separately in the first wiring area 101B and the second wiring area 102B, which can provide more wiring space for the first touch wirings 14. Thus, short circuit caused by too many first touch wirings 14 can be avoided. In this case, the width of the first touch wirings 14 can also be increased to reduce the impedance. Furthermore, the first touch wiring 14 located at the first wiring area 101B is connected to the second output terminal b located at the left side of the center part 201, and the first touch wiring 14 located at the second wiring area 102B is connected to the second output terminal b located at the right side of the center part 201, which can avoid the crossing and disorder between the first touch wirings and the second output terminal b.

[0076] In some embodiments of the present application, the touch area 100A comprises a first touch area 101A and a second touch area 102A. The first touch area 101A is located at the side of the second touch area 102A away from the driving chip 20.

[0077] Part of the first touch wiring 14 connected to the first touch electrode 11 located at the first touch area 101A is located at the first wiring area 101B. Part of the first touch wiring 14 connected to the first touch electrode 11 located at the second touch area 102A is located at the second wiring area 102B. Thus, the plurality of first touch wirings 14 are arranged regularly, which improves the wiring regularity of the touch display panel 100.

[0078] Of course, in other embodiments of the present application, the plurality of first touch electrodes 11 can also be divided into odd and even rows along the first direction Y. The first touch wires 14 connected with the first touch electrodes 11 in the odd rows are located in the first wire area 101B. The first touch wires 14 connected with the first touch electrodes 11 in the even rows are located in the second wire area 102B.

[0079] Please refer to Figure 1 and Figure 4 , Figure 4 is a partial structural schematic diagram of the display panel 10 provided in the present application. In the embodiments of the present application, each first touch wire 14 includes a first wire 141 and a second wire 142 connected with each other. The first wire 141 is connected with the corresponding first touch electrode 11. The second wire 142 is connected with the corresponding second output terminal b. Figure 1

[0080] The first wire 141 includes a first branch wire 1411, a second branch wire 1412 and a third branch wire 1413. The first branch wire 1411 is connected with the first touch electrode 11. The second branch wire 1412 connects the first branch wire 1411 and the third branch wire 1413. The third branch wire 1413 is connected with the second wire 142. The first branch wire 1411 and the third branch wire 1413 both extend along the first direction Y, and the third branch wire 1413 is located on the side of the first branch wire 1411 close to the driving chip 20.

[0081] The second wire 142 extends along the first direction Y or the second direction X. It can be understood that when the second wire 142 is connected with the second output terminal b located at the end portion 202, the second wire 142 extends along the first direction Y. When the second wire 142 is connected with the second output terminal b located at the second side edge 22, the second wire 142 extends along the second direction X.

[0082] The second wires 142 of the plurality of first touch wires 14 all extend along the second direction X, which can further reduce the wiring space occupied by the first touch wires 14. At the same time, the connection accuracy of the plurality of first touch wires 14 and the corresponding second output terminals B is improved.

[0083] In the embodiments of the present application, the first branch wire 1411 and the third branch wire 1413 both extend along the first direction Y, and the third branch wire 1413 is located on the side of the first branch wire 1411 close to the driving chip 20, which can make the plurality of first touch wires 14 all close to the driving chip 20, thereby reducing the area of the binding area.

[0084] ​In an embodiment of the present application, the first branch 1411 can be flush with the third branch 1413 at the end close to the driving chip 20. In this case, the second trace 142 extends along the second direction X. In another embodiment of the present application, the first branch 1411 can not be flush with the third branch 1413 at the end close to the driving chip 20. In this case, the second trace 142 extends along a direction intersecting the second direction X.

[0085] In an embodiment of the present application, the second touch trace 15 includes a third trace 151 and a fourth trace 152. The fourth trace 152 includes a sixth branch 1521 and a seventh branch 1522. The third trace 151 includes an eighth branch 1511.

[0086] The third trace 151 is connected to the second touch electrode 12 at the end close to the driving chip 20. The sixth branch 1521 connects the third trace 151 to the seventh branch 1522. The seventh branch 1522 is connected to the second output terminal b. The seventh branch 1522 and the eighth branch 1511 both extend along the first direction Y, and the seventh branch 1522 is located on the side of the eighth branch 1511 close to the driving chip 20. In this way, the wiring space can be fully utilized, and the second touch trace 15 can be neatly arranged between the touch electrode 110 and the driving chip 20.

[0087] Please refer to Figure 5 and Figure 6 , Figure 5 is a second plan view of the touch display panel provided in the present application. Figure 6 is a partial structure view of Figure 5 provided in the present application. The difference between the touch display panel 100 shown in Figure 1 is that, in an embodiment of the present application, the second trace 142 includes a fourth branch 1421 and a fifth branch 1422 connected to each other.

[0088] The fourth branch 1421 is connected to the third branch 1413. The fifth branch 1422 is connected to the corresponding second output terminal b. The fifth branch 1422 extends along the first direction Y or the second direction X. As described above, when the second trace 142 is connected to the second output terminal b located at the end portion 202, the fifth branch 1422 extends along the first direction Y. When the second trace 142 is connected to the second output terminal b located at the second side edge 22, the fifth branch 1422 extends along the second direction X.

[0089] In an embodiment of the present application, by setting the second trace 142 as the fourth branch 1421 and the fifth branch 1422 connected to each other, the fourth branch 1421 can be brought as close as possible to the driving chip 20, further reducing the area of the binding region.

[0090] Please refer to Figure 7 and Figure 8 , Figure 7 is a third plan view of the touch display panel provided in the present application. Figure 8 is a third plan view of the touch display panel provided in the present application. Figure 7 is an enlarged view of A in FIG. 10. The difference between the touch display panel 100 shown in FIG. 10 and the touch display panel 100 shown in FIG. 11 is that, in the embodiment of the present application, the second output terminals b are all arranged on the second side edge 22 and / or the fourth side edge 24. Figure 5

[0091] In the embodiment of the present application, the first output terminals a and the second output terminals b can be distinguished sufficiently, so that interference between the touch signal and the display signal can be avoided.

[0092] Further, the touch display panel 100 further comprises virtual terminals d. The virtual terminals d are arranged on the end portion 202. The virtual terminals d are arranged in the same way as the first output terminals a. In the embodiment of the present application, the virtual terminals d can be arranged to improve the wiring uniformity of the driving chip 20 and improve the efficiency of binding.

[0093] Please refer to Figure 9 , Figure 9 is a fourth plan view of the touch display panel provided in the present application. The difference between the touch display panel 100 shown in FIG. 10 and the touch display panel 100 shown in FIG. 12 is that, in the embodiment of the present application, the touch display panel 100 further comprises test terminals 18. The test terminals 18 are arranged on the side of the driving chip 20 away from the touch electrodes 110. The test terminals 18 are connected with the touch wires 30. Figure 5

[0094] In the mutual-capacitance touch display panel 100, the test terminals 18 are arranged in multiple. Some test terminals are connected with the corresponding first touch wires 14 through the detection lines 16. Some test terminals are connected with the corresponding second touch wires 15 through the detection lines 16.

[0095] In the embodiment of the present application, the first touch wires 14 and the second touch wires 15 are connected with the test terminals 18 arranged on the side of the driving chip 20 away from the touch electrodes 110, and the multiple detection lines 16 extend along the first direction Y and are arranged on both sides of the driving chip 20, so that the touch false pressure test can be conveniently performed when the touch display panel 100 is in the Cell state.

[0096] Please refer to Figure 4 and Figure 6 ​​As can be seen from the foregoing embodiments, the first trace 141 includes a first branch 1411, a second branch 1412, and a third branch 1413. The third branch 1413 extends along the first direction Y. Therefore, the third branch 1413 can be directly extended along the first direction Y to form the detection line 16, thereby simplifying the process.

[0097] The second trace 142 and the detection trace 16 are arranged on different layers to avoid signal interference.

[0098] In this embodiment of the application, after the driver chip 20 is bonded, the test terminal 18 can be cut off, thereby reducing the bezel of the touch display panel 100.

[0099] Of course, in other embodiments of this application, test terminals may also be retained in the touch display panel 100. In this case, the touch display panel 100 may further include a switch element T and a control signal line 17. The control terminal of the switch element T is connected to the control signal line. The input terminal of the switch element T is connected to the test terminal 18. The output terminal of the switch element T is connected to the corresponding first touch trace 14 or second touch trace 15.

[0100] The switching element T can be an N-type or P-type transistor. The switching element T can also be other devices with switching functions. The control signal line 17 is used to output a control signal to control the opening or closing of the switching element T.

[0101] Specifically, when the touch display panel 100 is touched, the control signal line 17 controls the switching element to turn off. This disconnects the electrical connection between the test terminal 18 and the corresponding first touch electrode 11 and second touch electrode 12. This avoids interference signals from the test terminal 18 side, improving test sensitivity and the quality of the touch display panel 100.

[0102] Accordingly, please refer to Figure 10 , Figure 10 This is a schematic diagram of a display device provided in this application. The display device 1000 includes a touch display panel 100 and a cover plate 200 disposed above the touch display panel 100. The touch display panel 100 is the touch display panel 100 described in any of the above embodiments, and will not be repeated here.

[0103] In the display device 1000 provided in the application, the touch display panel 100 includes a substrate, a plurality of touch electrodes arranged on the substrate, a plurality of touch wires, a driving chip and a plurality of detection lines. Each touch wire is connected with a corresponding touch electrode. The driving chip includes a plurality of first output terminals and a plurality of second output terminals. The first output terminals output display signals in a display stage. The second output terminals are connected with the touch wires one by one. Each detection line is connected with a corresponding touch wire at a side close to the driving chip. The plurality of detection lines extend from both sides of the driving chip in a direction away from the touch electrodes of the driving chip. The application uses a driving chip integrating touch function and display function. By arranging the detection lines on both sides of the driving chip and extending in a direction away from the touch electrodes of the driving chip, the touch pseudo-pressure test can be conveniently performed when the touch display panel 100 is in a cell state.

[0104] The touch display panel and the display device provided in the application are described in detail above. The principles and implementation manners of the technical solutions of the application are described by using specific examples. The above description of the examples is only used to help understand the method of the application and its core idea. Meanwhile, for those skilled in the art, according to the idea of the application, the specific implementation manners and application ranges can be changed. In summary, the content of the specification should not be understood as a limitation of the application.

Claims

1. A touch display panel, characterized in that, The touch display panel comprises: a substrate; a plurality of touch electrodes disposed on the substrate, the touch electrodes comprising a plurality of first touch electrodes and a plurality of second touch electrodes disposed in an insulating manner, the plurality of first touch electrodes being arranged in a first direction, and the plurality of second touch electrodes being arranged in a second direction intersecting the first direction; a plurality of touch wires disposed on the substrate, the touch wires comprising a plurality of first touch wires and a plurality of second touch wires, each of the first touch wires being connected to a corresponding first touch electrode, and each of the second touch wires being connected to a corresponding second touch electrode; a driving chip bonded to the substrate, the driving chip comprising a plurality of first output terminals and a plurality of second output terminals, the first output terminals outputting display signals in a display stage, and each of the second output terminals being connected to a corresponding touch wire; a plurality of detection lines disposed on the substrate, each of the detection lines being connected to a corresponding touch wire at a side of the touch wire close to the driving chip, and the detection lines extending from both sides of the driving chip in a direction away from the touch electrodes; the driving chip having a first side and a second side adjacent to each other, the first side extending in a direction perpendicular to the extension direction of the detection lines, and the first side being disposed close to the touch electrodes; the first side comprising a central portion and end portions on both sides of the central portion, the first output terminals being disposed in the central portion, and the second output terminals being disposed in the second side and / or the end portions; the touch display panel comprising a touch area and a wire area disposed around the touch area, the first touch wires being located in the wire area, and part of the first touch wires being connected to the second output terminals located on the right side of the central portion, each of the first touch wires comprising a first wire and a second wire connected to each other, the first wire being connected to a corresponding first touch electrode, and the second wire being connected to a corresponding second output terminal; the first wire comprising a first branch line, a second branch line, and a third branch line, the first branch line being connected to the first touch electrode, the second branch line connecting the first branch line and the third branch line, and the third branch line being connected to the second wire, the first branch line and the third branch line both extending in the first direction, and the third branch line being located on the side of the first branch line close to the driving chip; at least part of the second wire extending in the second direction, the part of the second wire extending in the second direction being connected to the second output terminal and located on the side of the second output terminal close to the second side; the third branch line extending directly in the first direction to form the detection line, and the second wire being disposed in a layer different from the detection line. The touch display panel further comprises virtual terminals, the virtual terminals being disposed in the end portions, and the second output terminals being disposed in the second side. 2.The touch display panel of claim 1, wherein, ​ 3.The touch display panel of claim 1, wherein, The touch display panel comprises a touch area and a wiring area arranged around the touch area, the wiring area comprises a first wiring area and a second wiring area located on opposite sides of the touch area; Part of the first touch wiring is located in the first wiring area, and the other part of the first touch wiring is located in the second wiring area, the first touch wiring located in the first wiring area is connected with the second output terminal located on the left side of the center part, and the first touch wiring located in the second wiring area is connected with the second output terminal located on the right side of the center part. 4.The touch display panel of claim 3, wherein, The second wiring extends along the second direction; Or the second wiring comprises a fourth branch line and a fifth branch line connected with each other, the fourth branch line is connected with the third branch line, the fifth branch line is connected with the corresponding second output terminal, and the fifth branch line extends along the second direction. 5.The touch display panel of claim 3, wherein, The second touch wiring comprises a third wiring and a fourth wiring, and the fourth wiring comprises a sixth branch line and a seventh branch line; The third wiring is connected with one end of the second touch electrode close to the driving chip, the sixth branch line connects the third wiring and the seventh branch line, the seventh branch line is connected with the second output terminal, and the seventh branch line extends along the first direction or the second direction. 6.The touch display panel of claim 1, wherein, The touch display panel further comprises a test terminal, the test terminal is arranged on the side of the driving chip away from the touch electrode, and the test terminal is connected with the touch wiring. 7.The touch display panel of claim 6, wherein, The touch display panel further comprises a plurality of switch elements and a control signal line, the control end of the switch element is connected with the control signal line, the input end of the switch element is connected with the corresponding test terminal, and the output end of the switch element is connected with the corresponding touch wiring.

8. A display device, characterized by comprising: The display device comprises a touch display panel and a cover plate arranged above the touch display panel, and the touch display panel is the touch display panel according to any one of claims 1-7.

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