Touch display panel and electronic device

Abstract

The application provides a touch display panel and an electronic device. The electronic device comprises the touch display panel. The touch display panel comprises a transmitting electrode, a receiving electrode and a touch driving signal bus. Any row of the transmitting electrode is driven from both ends to the middle or from the middle to both ends at the same time through the touch driving signal bus. In this way, the load in the touch driving signal bus is reduced, and the delay of the transmitting electrode in different areas receiving the touch driving signal is reduced, so that the touch sensitivity of the touch display panel is improved.

Description

TECHNICAL FIELD

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

[0002] With the rapid development of display technology, touch display panels have broad application space in the fields of vehicle-mounted, mobile phone, tablet, computer and television. Generally speaking, touch function has become one of the standard configurations of most display panels, among which the application of capacitive touch display panels is more widespread. The basic principle is to generate a capacitance between a finger or a touch pen and a touch panel, and to use the electric signal formed by the capacitance change before and after touch to confirm whether the touch display panel is touched and to confirm the touch coordinates.

[0003] An important touch technology of capacitive touch display panels is mutual capacitance touch. Since mutual capacitance touch requires fewer touch driving signal lines, and touch function is realized through one or two layers of metal, it can meet the requirement of reducing the thickness of display panels. The existing single-layer mutual capacitance touch technology usually adopts a one-way scanning mode for driving. Since there is resistance in the touch driving signal bus, the touch driving signals received by the emission electrodes in different areas are delayed, resulting in reduced touch sensitivity of the touch display panel.

[0004] In summary, the existing touch display panel has the problem of reduced touch sensitivity due to the load in the line. Therefore, it is necessary to provide a touch display panel and electronic equipment to improve this defect. SUMMARY

[0005] The embodiments of the present application provide a touch display panel and electronic equipment, which can reduce the load in the line, thereby reducing the delay of the touch driving signals received by the emission electrodes in different areas, and improving the touch sensitivity of the touch display panel.

[0006] The embodiments of the present application provide a touch display panel, which comprises a display area and a lower bezel area arranged on one side of the display area, and further comprises:

[0007] An emission electrode is arranged in the display area. A plurality of emission electrodes are arranged in rows along a first direction and in columns along a second direction. The first direction is different from the second direction.

[0008] A receiving electrode is arranged in the display area. A plurality of receiving electrodes are arranged along the first direction. The emission electrode and the receiving electrode are arranged in the same layer and are arranged in a staggered manner with the receiving electrode to form a mutual capacitance.

[0009] A plurality of touch control drive signal buses are arranged in the lower frame area, and are used to transmit touch control drive signals to the corresponding transmitting electrodes.

[0010] The plurality of transmitting electrodes in the same row are connected to the same touch control drive signal bus, and the touch control drive signal bus simultaneously transmits the touch control drive signals to the middle of the two ends of the corresponding row of transmitting electrodes or from the middle to the two ends.

[0011] According to an embodiment of the present application, the lower frame area includes a binding area, and the touch control display panel includes a plurality of pads arranged in the binding area.

[0012] The opposite ends of the touch control drive signal bus are electrically connected to two different pads, and the two pads connected to the same touch control drive signal bus simultaneously transmit the same touch control drive signals to the touch control drive signal bus.

[0013] According to an embodiment of the present application, the lower frame area includes a binding area, and the touch control display panel includes a plurality of pads arranged in the binding area.

[0014] The middle region of the touch control drive signal bus is electrically connected to the corresponding pad.

[0015] According to an embodiment of the present application, the touch control display panel includes a plurality of touch control drive signal wires, one end of the touch control drive signal wire is electrically connected to the corresponding transmitting electrode, and the opposite end of the touch control drive signal wire is electrically connected to the corresponding touch control drive signal bus.

[0016] The touch control drive signal wire and the transmitting electrode are arranged in the same layer, and the touch control drive signal wire and the touch control drive signal bus are arranged in different layers.

[0017] According to an embodiment of the present application, the touch control display panel includes a display device layer, the transmitting electrode and the receiving electrode are arranged on the light-emitting side of the display device layer, and the display device layer includes a plurality of metal layers.

[0018] The plurality of touch control drive signal buses and at least one metal layer in the display device layer are arranged in the same layer.

[0019] According to an embodiment of the present application, the touch control drive signal bus includes a main line and a sub-line electrically connected to the main line, the main line and the sub-line are arranged in different layers and are arranged in a position opposite to each other, and the touch control drive signal wire is electrically connected to any one of the main line and the sub-line.

[0020] According to an embodiment of the present application, the touch display panel further comprises a packaging layer and a touch insulation layer which are sequentially arranged on the light emitting side of the display device layer, and the transmitting electrode and the receiving electrode are arranged on the side of the touch insulation layer away from the packaging layer.

[0021] According to an embodiment of the present application, the receiving electrode and the transmitting electrode of the adjacent column are arranged alternately to form mutual capacitance.

[0022] According to an embodiment of the present application, the transmitting electrode comprises a transmitting stem extending along the second direction and a plurality of transmitting branches extending from one side of the transmitting stem along a direction opposite to the first direction and arranged alternately.

[0023] The receiving electrode comprises a receiving stem extending along the second direction and a plurality of receiving branches extending from one side of the receiving stem along the first direction and arranged alternately.

[0024] The transmitting branch and the receiving branch are arranged alternately.

[0025] The embodiment of the present application further provides an electronic device comprising a shell, a circuit board and the touch display panel as described above, the circuit board is arranged in the shell, the touch display panel is arranged on the shell, and the touch display panel is electrically connected to the circuit board.

[0026] The embodiment of the present application provides a touch display panel and an electronic device, the electronic device comprises the touch display panel, the touch display panel comprises a display area and a lower frame area arranged on one side of the display area, the touch display panel further comprises a transmitting electrode, a receiving electrode and a touch driving signal bus, the transmitting electrode is arranged on the display area, a plurality of transmitting electrodes are arranged in a column along a first direction and arranged in a row along a second direction, the first direction is different from the second direction, the receiving electrode is arranged on the display area, a plurality of receiving electrodes are arranged along the first direction, the transmitting electrode and the receiving electrode are arranged on the same layer and are arranged to be staggered with each other to form a mutual capacitance, a plurality of touch driving signal buses are arranged in the lower frame area, and are used for transmitting a touch driving signal to the corresponding transmitting electrode, a plurality of transmitting electrodes located in the same row are connected to the same touch driving signal bus, the touch driving signal is simultaneously transmitted to both ends to the middle or from the middle to both ends of the corresponding row of transmitting electrodes through the touch driving signal bus, so that any row of transmitting electrodes is simultaneously driven from both ends to the middle or from the middle to both ends, so as to reduce the load in the touch driving signal bus, reduce the delay of the transmitting electrode in different areas receiving the touch driving signal, and improve the touch sensitivity of the touch display panel. BRIEF DESCRIPTION OF DRAWINGS

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

[0028] Figure 1 The structure schematic diagram of the touch display panel provided by the embodiment of the present application is shown in the figure.

[0029] Figure 2 The structure schematic diagram of the touch display panel provided by the embodiment of the present application is shown in the figure.

[0030] Figure 3 The structure schematic diagram of the touch display panel provided by the embodiment of the present application is shown in the figure.

[0031] Figure 4 The structure schematic diagram of the touch display panel provided by the embodiment of the present application is shown in the figure.

[0032] Figure 5 The structure schematic diagram of the touch display panel provided by the embodiment of the present application is shown in the figure.

[0033] Figure 6 A schematic diagram of the stacked layers of the lower bezel area of ​​the touch display panel provided in an embodiment of this application;

[0034] Figure 7 This is a schematic diagram of the stacked structure of the touch display panel provided in an embodiment of this application;

[0035] Figure 8 This is a schematic diagram of another stacked structure of a touch display panel provided in an embodiment of this application;

[0036] Figure 9 A schematic diagram of another layered structure of a touch display panel provided in this application embodiment; and

[0037] Figure 10 This is a schematic diagram of another layered structure of a touch display panel provided in an embodiment of this application. Detailed Implementation

[0038] The following descriptions of the embodiments are based on the accompanying illustrations and are used to illustrate specific embodiments in which this application can be implemented. Directional terms used in this application, such as [up], [down], [front], [back], [left], [right], [inner], [outer], [side], etc., are only for reference to the accompanying drawings. Therefore, the directional terms used are for illustrative and understanding purposes and not for limiting the application. In the figures, structurally similar units are represented by the same reference numerals.

[0039] The present application will be further described below with reference to the accompanying drawings and specific embodiments.

[0040] like Figure 1 As shown, Figure 1 This is a schematic diagram of the structure of a first type of touch display panel provided in an embodiment of this application. The touch display panel includes a display area AA and a non-display area NA surrounding the display area AA. The non-display area NA includes a lower border area DB disposed on one side of the display area AA.

[0041] The touch display panel includes a transmitting electrode TX and a receiving electrode RX. Both the transmitting electrode TX and the receiving electrode RX are disposed in the display area AA. A plurality of transmitting electrodes TX are arranged in a row at intervals along a first direction X, and a plurality of transmitting electrodes TX are arranged in a column at intervals along a second direction Y. A plurality of receiving electrodes RX are arranged at intervals along the first direction X, and the first direction X is different from the second direction Y.

[0042] In the embodiments of this application, using Figure 1 Taking the top-down view of the touch display panel as an example, the first direction X is the horizontal direction, the second direction Y is the vertical direction, and the first direction X and the second direction Y are perpendicular to each other.

[0043] It should be noted that, Figure 1 Only m rows*n columns (m, n are positive integers) of the transmitting electrodes TX and n receiving electrodes RX are shown, which does not represent the actual number of the transmitting electrodes TX and the receiving electrodes RX contained in the touch display panel.

[0044] As Figure 2 shown, Figure 2 a schematic diagram of a laminated structure of a display area of a touch display panel provided by the embodiments of the present application, the touch display panel comprising a substrate 10, a display device layer 20 disposed on the substrate 10, and an encapsulation layer 30 covering a light-emitting side of the display device layer 20.

[0045] The display device layer 20 comprises a thin film transistor array layer 21 disposed on the substrate 10 and a light-emitting device layer 22 disposed on the thin film transistor array layer 21.

[0046] The light-emitting device in the light-emitting device layer 22 can be an organic light-emitting diode (OLED), which can comprise an anode, a hole injection layer, a hole transport layer, an organic light-emitting layer, an electron transport layer, an electron injection layer, and a cathode which are sequentially stacked. In other embodiments, the light-emitting device in the light-emitting device layer 22 can also be a micro light-emitting diode (Micro LED) chip.

[0047] The encapsulation layer 30 can be a thin film encapsulation layer, which can specifically be an inorganic encapsulation layer, an organic encapsulation layer, and a laminated structure formed by sequentially stacking the inorganic encapsulation layer and the organic encapsulation layer.

[0048] In the embodiments of the present application, the touch display panel is a single-layer mutual-capacitance touch display panel, the transmitting electrodes TX and the receiving electrodes RX are disposed on the same layer, and the transmitting electrodes TX and the receiving electrodes RX are disposed in a staggered manner to form mutual capacitances.

[0049] The receiving electrodes RX and the multiple transmitting electrodes TX of the adjacent column are disposed in a staggered manner to form mutual capacitances.

[0050] As Figure 1 shown, each receiving electrode RX corresponds to a column of transmitting electrodes TX. Taking the first column of transmitting electrodes TX and the first receiving electrode RX as an example, the first receiving electrode RX and the multiple transmitting electrodes TX of the first column are disposed in a staggered manner to form mutual capacitances.

[0051] Specifically, the transmitting electrode TX includes a transmitting main stem TX' extending along the second direction Y and a plurality of transmitting branch stems TX'' extending from one side of the transmitting main stem TX' in a direction opposite to the first direction X and arranged at intervals.

[0052] The receiving electrode RX includes a receiving main stem RX' extending along the second direction Y and a plurality of receiving branch stems RX'' extending from one side of the receiving main stem RX' in the first direction X and arranged at intervals.

[0053] The transmitting branch stems TX'' of the transmitting electrode TX and the receiving branch stems RX'' of the receiving electrode RX are arranged alternately to form mutual capacitance. Figure 1 As shown, two adjacent transmitting branch stems TX'' of the transmitting electrode TX and the transmitting main stem TX' form a groove, and the receiving branch stem RX'' of the receiving electrode RX can be accommodated in the groove. Similarly, two adjacent receiving branch stems RX'' of the receiving electrode RX and the receiving main stem RX' can form a groove, and the transmitting branch stem TX'' of the transmitting electrode TX can be accommodated in the groove.

[0054] As shown in FIG. 1, the transmitting electrode TX and the receiving electrode RX can be arranged on the light-emitting side of the display device layer 20 and on the side of the encapsulation layer 30 facing away from the display device layer 20. Figure 2

[0055] The transmitting electrode TX can be made of the same material as the receiving electrode RX, so that the transmitting electrode TX and the receiving electrode RX can be prepared simultaneously by using the same metal film forming and patterning process. This can reduce the number of processes and the number of mask plates required for the processes, thereby reducing production costs and improving production efficiency, and also reducing the thickness of the film layers of the display panel.

[0056] The touch display panel can further include an organic planarization layer 40 arranged on the side of the encapsulation layer 30 facing away from the display device layer 20 and covering the transmitting electrode TX and the receiving electrode RX.

[0057] ​In the actual preparation process, the light emitting device layer 22 can be formed on the thin film transistor array layer first, then the encapsulation layer 30 covering the light emitting device layer 22 is formed on the light emitting device layer 22, then a metal film is formed on the surface of the encapsulation layer 30 by physical vapor deposition (PVD), then a layer of photoresist is covered on the surface of the metal film, and the metal film is patterned by using yellow light process, and after stripping the photoresist, the transmitting electrode TX and the receiving electrode RX are formed, then a layer of transparent organic material with high light transmittance is covered on the transmitting electrode TX and the receiving electrode RX, and after the transparent organic material is solidified, the organic flat layer 40 is formed.

[0058] In one embodiment, as shown in Figure 3 , Figure 3 Another schematic diagram of the display area of the touch display panel is provided in the embodiment of the present application, and the structure of the touch display panel is substantially the same as that of the touch display panel shown in Figure 2 , the difference is that the touch display panel further comprises a touch insulating layer 50, the touch insulating layer 50 is arranged on the side of the encapsulation layer 30 away from the display device layer 20, the transmitting electrode TX and the receiving electrode RX are arranged on the side of the touch insulating layer 50 away from the encapsulation layer 30, and the organic flat layer 40 is arranged on the touch insulating layer 50 and covers the transmitting electrode TX and the receiving electrode RX.

[0059] By adding the touch insulating layer 50 between the transmitting electrode TX, the receiving electrode RX and the display device layer 20, the distance between the transmitting electrode TX, the receiving electrode RX and the display device layer 20 is increased, so that the parasitic capacitance between the transmitting electrode TX, the receiving electrode RX and the cathode in the display device layer 20 can be reduced.

[0060] The material of the touch insulating layer 50 can be any one or a combination of multiple insulating materials in silicon nitride (SiNx), silicon oxide (SiOx), silicon oxynitride (SiNO) or organic matter.

[0061] As shown in Figure 1 , the touch display panel further comprises a plurality of touch driving signal buses 11, the touch driving signal buses 11 are arranged in the lower border area DB, and are used to transmit touch driving signals to the corresponding transmitting electrodes TX.

[0062] The touch display panel may further include multiple pads 13, multiple touch drive signal lines 12, and multiple touch sensing signal lines 15. One end of each touch drive signal line 12 extends into the display area AA and is electrically connected to a corresponding transmitting electrode TX. The other end of each touch drive signal line 12 extends into the lower bezel area DB and is electrically connected to a corresponding touch drive signal bus 11. One end of each touch sensing signal line 15 extends into the display area AA and is connected to a corresponding receiving electrode RX. The other end of each touch sensing signal line 15 extends into the lower bezel area DB and is electrically connected to a corresponding pad 13.

[0063] The lower border area DB may include a bonding area BA and a bending area FA. The bending area FA is disposed between the display area AA and the bonding area BA. The touch drive signal bus 11 may be disposed between the bending area FA and the bonding area BA. The bending area FA of the touch display panel can be bent so that the portion of the lower border area DB located on the side of the bending area FA away from the display area AA can be bent to the back of the touch display panel, thereby reducing the width of the lower border area DB of the touch display panel.

[0064] The pad 13 is disposed within the bonding area BA. The bonding area BA can be used to bond a touch driver chip. The touch driver signal bus 11 can be electrically connected to the pad 13. The touch driver signal output by the touch driver chip can be transmitted to the corresponding emitter electrode TX through the pad 13, the touch driver signal bus 11, and the touch driver signal trace 12.

[0065] Furthermore, multiple transmitting electrodes TX located in the same row are connected to the same touch driving signal bus 11, and the touch driving signal bus 11 transmits the touch driving signal simultaneously from both ends to the middle or from the middle to both ends of the corresponding row of transmitting electrodes TX.

[0066] like Figure 1 As shown, taking the first row of emitting electrodes TX as an example, the n emitting electrodes TX1 to TXn located in the first row are connected to the same touch driving signal bus 11 through their respective touch driving signal traces 12. After receiving the touch driving signal output by the touch driving chip, the touch driving signal bus 11 transmits it to each emitting electrode through each touch driving signal trace 12. This avoids leading each touch driving signal trace 12 out to the bonding area BA and connecting it to the corresponding pad, thereby reducing the number of pads 13 in the bonding area BA, which can reduce the width of the bottom bezel area DB and thus increase the screen ratio of the touch display panel.

[0067] In one embodiment, the opposite ends of the touch driving signal bus 11 are electrically connected to two different pads 13, and the two pads 13 connected to the same touch driving signal bus simultaneously transmit the same touch driving signal to the touch driving signal bus 11.

[0068] As shown in FIG. 1, the opposite ends of the touch driving signal bus 11 connected to the first row of the transmission electrodes TX1-TXn extend to the binding area BA and are connected to two different pads 13 in the binding area BA, and the two pads 13 simultaneously transmit the same touch driving signal to the opposite ends of the touch driving signal bus 11 and then to the middle region of the touch driving signal bus 11, so as to drive the middle transmission electrode of the first row of the transmission electrodes TX1-TXn by the transmission electrodes TX1 and TXn at the left and right ends of the first row of the transmission electrodes. In this way, the uniformity of the touch driving signal received by each transmission electrode TX in the same row of the transmission electrodes can be ensured, and the driving capability of the transmission electrode TX can be improved, thereby improving the sensitivity of the touch display panel. Figure 1

[0069] In one embodiment, the middle region of the touch driving signal bus 11 is electrically connected to the corresponding pad 13.

[0070] As shown in FIG. 2, the structure of the touch display panel provided by the embodiment of the present application is substantially the same as the structure of the touch display panel shown in FIG. 1, except that the middle region of the touch driving signal bus 11 is electrically connected to the corresponding pad 13. Figure 4 Figure 4 As shown in FIG. 3, the touch display panel further includes a plurality of lead lines 14, one end of the lead line 14 is electrically connected to the middle region of the touch driving signal bus 11, and the other end of the lead line 14 extends to the binding area BA and is connected to the corresponding pad 13. Figure 1 As shown in FIG. 3, the touch display panel further includes a plurality of lead lines 14, one end of the lead line 14 is electrically connected to the middle region of the touch driving signal bus 11, and the other end of the lead line 14 extends to the binding area BA and is connected to the corresponding pad 13.

[0071] Figure 4 As shown in FIG. 3, the touch display panel further includes a plurality of lead lines 14, one end of the lead line 14 is electrically connected to the middle region of the touch driving signal bus 11, and the other end of the lead line 14 extends to the binding area BA and is connected to the corresponding pad 13.

[0072] As shown in FIG. 3, the touch display panel further includes a plurality of lead lines 14, one end of the lead line 14 is electrically connected to the middle region of the touch driving signal bus 11, and the other end of the lead line 14 extends to the binding area BA and is connected to the corresponding pad 13.

[0073] ​​​In one of the embodiments, both ends and the middle region of the touch control driving signal bus 11 are electrically connected to different pads 13, and different pads 13 connected to the same touch control driving signal bus 11 simultaneously transmit the same touch control driving signal.

[0074] As shown in Figure 5 , Figure 5 Another structure diagram of a touch control display panel is provided in the embodiments of the present application, and the structure of the touch control display panel is substantially the same as that of the touch control display panel shown in Figure 1 , the difference is that the touch control driving signal bus 11 can not only extend to the binding area BA through both ends and be connected to the pads 13 in the binding area BA, but also extend to the binding area BA through the lead lines 14 in the middle region of the touch control driving signal bus 11 and be connected to the corresponding pads 13, and three pads 13 connected to the touch control driving signal bus 11 can simultaneously transmit the same touch control driving signal to both ends and the middle region of the touch control driving signal bus 11, so that the first row of the transmitting electrodes can be simultaneously driven from both sides to the middle and from the middle to both sides, thereby further improving the driving capability of the transmitting electrodes on the basis of the above-mentioned embodiments, and further improving the sensitivity of the touch control display panel.

[0075] In one of the embodiments, a plurality of lead lines 14 can also be led out from a plurality of regions on the touch control driving signal bus 11 and extend to the binding area BA to be connected to a plurality of corresponding pads 13, so as to simultaneously drive a plurality of columns of the transmitting electrodes corresponding to the touch control driving signal bus 11 by using a plurality of pads 13, so that the driving capability of the transmitting electrodes TX can also be improved, thereby improving the sensitivity of the touch control display panel. In this embodiment, the number of lead lines 14 can be set according to actual conditions, which is not limited here.

[0076] Further, the touch control driving signal wire 12 and the transmitting electrode TX are arranged on the same layer, and the touch control driving signal wire 12 and the touch control driving signal bus 11 are arranged on different layers.

[0077] In the embodiments of the present application, the touch control driving signal wire 12 can be arranged on the side of the encapsulation layer 30 away from the display device layer 20 together with the transmitting electrode TX and the receiving electrode RX, or the touch control driving signal wire 12 can also be arranged on the side of the touch junction layer 50 away from the encapsulation layer 30 together with the transmitting electrode TX and the receiving electrode RX. The organic planar layer 40 covers the transmitting electrode TX, the receiving electrode RX and the touch control driving signal wire 12.

[0078] In combination with Figure 1 andFigure 6 As shown, Figure 6 The schematic diagram of the stack structure of the lower border area of the touch display panel provided in the embodiment of the present application, the touch driving signal lines 12 and the touch driving signal bus 11 are arranged in different layers, and the plurality of touch driving signal lines 12 connected to the same row of the transmitting electrodes TX can be connected to the same touch driving signal bus 11 through the via VA, and the via VA penetrates the insulating layer between the touch driving signal line 12 and the touch driving signal bus 11.

[0079] In Figure 4 In the embodiment as shown, the lead line 14 can be arranged in the same layer as the touch driving signal line 12, and the touch driving signal bus 11 and the lead line 14 can also be connected through the via penetrating the insulating layer between the lead line 14 and the touch driving signal bus 11.

[0080] Further, the display device layer 20 includes a plurality of metal layers, and the plurality of touch driving signal buses 11 are arranged in the same layer as at least one of the metal layers in the display device layer 20.

[0081] As Figure 7 As shown, Figure 7 The schematic diagram of the stack structure of the touch display panel provided in the embodiment of the present application, the display device layer 20 includes the thin film transistor array layer 21 and the light emitting device layer 22, the thin film transistor array layer 21 includes a buffer layer 210, an active layer 211, a gate insulating layer 212, a first metal layer M1, an interlayer dielectric layer 213, a second metal layer M2, a passivation layer 214, a third metal layer M3, a planarization layer 215, a fourth metal layer M4, and a pixel definition layer 216 which are sequentially arranged on the substrate 10. The light emitting device layer 22 includes a light emitting layer 220 and a cathode layer 221.

[0082] The first metal layer M1 is provided with a patterned gate 231 and a plurality of scan lines (not shown in the figure), the second metal layer M2 is provided with a patterned source 232 and drain 233 and a plurality of data lines (not shown in the figure), the third metal layer M3 is provided with a conductive electrode 234 for connecting the drain 233 and the anode 235, and a power low voltage signal line VSS or a reset signal line VR, and the fourth metal layer M4 is provided with a patterned anode 235.

[0083] In one of the embodiments, as Figure 7As shown, multiple touch driving signal buses 11 can be disposed on the same layer as the fourth metal layer M4 and made of the same material as the fourth metal layer M4. The touch driving signal traces 12 can be disposed on the pixel definition layer 216 within the lower border area DB and connected to the touch driving signal buses 11 through vias VA penetrating the pixel definition layer 216.

[0084] In one embodiment, such as Figure 8 As shown, Figure 8 This is a schematic diagram of another stacked structure of a touch display panel provided in an embodiment of this application, the structure of which is similar to... Figure 7 The structures of the touch display panels shown are largely the same, the difference being that multiple touch drive signal buses 11 are disposed on the same layer as the third metal layer M3, and are made of the same material as the third metal layer M3. The touch drive signal traces 12 can be connected to the touch drive signal buses 11 through vias VA that pass through the pixel definition layer 216 and the planarization layer 215.

[0085] In one embodiment, the multiple touch drive signal buses 11 may also be disposed on the same layer as the second metal layer M2 and be made of the same material as the second metal layer M2.

[0086] In one embodiment, such as Figure 9 As shown, Figure 9 This is a schematic diagram of another stacked structure of a touch display panel provided in an embodiment of this application, the structure of which is similar to... Figure 7 The structures of the touch display panels shown are roughly the same, the difference being that: multiple touch driving signal buses 11 can be disposed on the same layer as the second metal layer M2 and the third metal layer M3 respectively, and multiple touch driving signal traces 12 can be connected to the touch driving signal buses 11 located on different film layers through vias VA penetrating the pixel definition layer 216 and the planarization layer 215, and through vias VA penetrating the pixel definition layer 216, the planarization layer 215 and the passivation protection layer 214 respectively.

[0087] In one embodiment, such as Figure 10 As shown, Figure 10 This is a schematic diagram of another stacked structure of a touch display panel provided in an embodiment of this application, the structure of which is similar to... Figure 7 The structures of the touch display panels shown are roughly the same, except that: the touch driving signal bus 11 includes a main line 111 and a sub-line 112 electrically connected to the main line 111. The main line 111 and the sub-line 112 are located on different layers and are aligned. The touch driving signal trace 12 is electrically connected to either the main line 111 or the sub-line 112.

[0088] As shown in Figure 10 each of the drive signal buses 11 can include a main line 111 and a sub-line, the main line 111 is disposed in the same layer as the fourth metal layer M4, the sub-line 112 is disposed in the same layer as the third metal layer M3, the main line 111 and the sub-line 112 are disposed in register, and the main line 111 can be connected to the sub-line 112 through a via hole penetrating the planar layer 215. The touch drive signal wire 12 can be connected to the main line 111 through a via hole penetrating the pixel definition layer 216. By connecting a sub-line 112 in parallel to the main line 111 of the touch drive signal bus 11, the resistance of the touch drive signal bus 11 can be reduced, the load of the touch drive signal bus 11 can be reduced, the delay of the touch drive signal in the circuit can be reduced, and the touch sensitivity of the touch display panel can be improved.

[0089] In other embodiments, the main line 111 can be disposed in the same layer as the third metal layer M3, and the sub-line 112 can be disposed in the same layer as the second metal layer M2; or the main line 111 can be disposed in the same layer as the second metal layer M2, and the sub-line 112 can be disposed in the same layer as the first metal layer M1, which can also reduce the resistance of the touch drive signal bus 11.

[0090] According to the display panel provided by the above-mentioned embodiments of the present application, the embodiments of the present application further provide an electronic device, which includes a housing, a circuit board, and a display panel provided by the above-mentioned embodiments, the circuit board is disposed in the housing, the touch display panel is disposed on the housing, and the touch display panel is electrically connected to the circuit board.

[0091] The electronic device can be a mobile terminal, such as a color electronic paper, a color electronic book, a smart phone, etc. The electronic device can also be a wearable terminal, such as a smart watch, a smart bracelet, etc. The electronic device can also be a fixed terminal, such as a color electronic billboard, a color electronic poster, etc.

[0092] The embodiment of the present application has the following beneficial effects: the embodiment of the present application provides a touch display panel, which comprises a display area and a lower frame area arranged at one side of the display area, and further comprises a transmitting electrode, a receiving electrode and a touch driving signal bus. The transmitting electrode is arranged in the display area, and a plurality of transmitting electrodes are arranged in columns along a first direction and in rows along a second direction. The first direction is different from the second direction. The receiving electrode is arranged in the display area, and a plurality of receiving electrodes are arranged along the first direction. The transmitting electrode and the receiving electrode are arranged in the same layer and are arranged in a staggered manner to form a mutual capacitance. A plurality of touch driving signal buses are arranged in the lower frame area, and are used to transmit a touch driving signal to the corresponding transmitting electrode. A plurality of transmitting electrodes in the same row are connected to the same touch driving signal bus. The touch driving signal is transmitted to both ends to the middle or from the middle to both ends of the corresponding row of transmitting electrodes through the touch driving signal bus, so as to drive any row of transmitting electrodes from both ends to the middle or from the middle to both ends at the same time. In this way, the load in the touch driving signal bus is reduced, and the delay of the transmitting electrode in different areas receiving the touch driving signal is reduced, thereby improving the touch sensitivity of the touch display panel.

[0093] In summary, although the present application discloses the above preferred embodiments, the above preferred embodiments are not used to limit the present application. Those skilled in the art can make various modifications and decorations without departing from the spirit and scope of the present application. Therefore, the protection scope of the present application is based on the scope defined by the claims.

Claims

1. A touch display panel, characterized in that, The touch display panel comprises a display area and a lower frame area arranged at one side of the display area, and further comprises: a plurality of transmitting electrodes arranged in the display area, the transmitting electrodes being arranged in rows along a first direction and in columns along a second direction, the first direction being different from the second direction; a plurality of receiving electrodes arranged in the display area, the receiving electrodes being arranged along the first direction, the transmitting electrodes and the receiving electrodes being arranged in the same layer and being staggered with each other to form mutual capacitances; and a plurality of touch driving signal buses arranged in the lower frame area and used for transmitting touch driving signals to the corresponding transmitting electrodes. In the same row, the transmitting electrodes are connected to the same touch driving signal bus, and the touch driving signal bus simultaneously transmits the touch driving signals from both ends to the middle or from the middle to both ends of the corresponding row of transmitting electrodes. The touch display panel comprises a plurality of touch driving signal wires, one end of the touch driving signal wire being electrically connected to the corresponding transmitting electrode, and the opposite end of the touch driving signal wire being electrically connected to the corresponding touch driving signal bus, the touch driving signal wire and the transmitting electrode being arranged in the same layer. 2.The touch display panel of claim 1, wherein, The lower frame area comprises a binding area, and the touch display panel comprises a plurality of pads arranged in the binding area. The opposite ends of the touch driving signal bus are electrically connected to two different pads, and the two pads connected to the same touch driving signal bus simultaneously transmit the same touch driving signals to the touch driving signal bus. 3.The touch display panel of claim 1, wherein, The lower frame area comprises a binding area, and the touch display panel comprises a plurality of pads arranged in the binding area. The middle region of the touch driving signal bus is electrically connected to the corresponding pad. 4.The touch display panel of claim 1, wherein, The touch driving signal wire and the touch driving signal bus are arranged in different layers. 5.The touch display panel of claim 4, wherein, The touch display panel comprises a display device layer, the transmitting electrodes and the receiving electrodes being arranged on the light-emitting side of the display device layer, and the display device layer comprising a plurality of metal layers. The plurality of touch driving signal buses and at least one metal layer in the display device layer are arranged in the same layer. 6.The touch display panel of claim 5, wherein, The touch driving signal bus comprises a main line and a sub-line electrically connected to the main line, the main line and the sub-line being arranged in different layers and being arranged in alignment, and the touch driving signal wire being electrically connected to any one of the main line and the sub-line. 7.The touch display panel of claim 5, wherein, The touch display panel further comprises a packaging layer and a touch insulation layer arranged in sequence on the light-emitting side of the display device layer, and the transmitting electrodes and the receiving electrodes being arranged on the side of the touch insulation layer away from the packaging layer. 8.The touch display panel of claim 1, wherein, The receiving electrodes and the transmitting electrodes in the adjacent column are staggered with each other to form mutual capacitances. 9.The touch display panel of claim 1, wherein, The transmitting electrodes comprise a transmitting main stem extending along the second direction and a plurality of transmitting branch stems extending from one side of the transmitting main stem in a direction opposite to the first direction. The receiving electrode comprises a receiving stem extending along the second direction and a plurality of receiving branches extending along the first direction and spaced from each other from one side of the receiving stem. The transmitting branches and the receiving branches are arranged alternately.

10. An electronic device, comprising: The display device comprises a housing, a circuit board and the touch display panel according to any one of claims 1 to 9, the circuit board is arranged in the housing, the touch display panel is arranged on the housing, and the touch display panel is electrically connected to the circuit board.

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