CN113918051B

CN113918051B - Touch display panel

Info

Publication number: CN113918051B
Application number: CN202111179792.XA
Authority: CN
Inventors: 方亮; 丁玎
Original assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Current assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority date: 2021-10-11
Filing date: 2021-10-11
Publication date: 2023-06-27
Anticipated expiration: 2041-10-11
Also published as: CN113918051A

Abstract

The embodiment of the application discloses a touch display panel, the touch display panel comprises a display area, a bending area and a binding area, wherein the binding area comprises a driving wiring layer, a touch wiring layer and a first flat layer, the driving wiring layer comprises an external signal wire, the touch wiring layer is of a single-layer metal structure, the touch wiring layer comprises a first binding wiring arranged close to the bending area, the first flat layer is arranged on the driving wiring layer, at least one groove is arranged at the position, close to the first binding wiring, of the first flat layer, and the first binding wiring at least covers the groove; the groove is covered at least by the first binding wire, when the first binding wire and the touch signal wire are formed by etching, the external signal wire at the groove can not be etched, and the technical problem that the external lead wire is broken at the groove of the traditional touch display panel is solved.

Description

Touch display panel

Technical Field

The application relates to the technical field of touch display, in particular to a touch display panel.

Background

An important touch technology of a capacitive touch panel is self-capacitance, and common touch structure design schematic diagrams are shown in fig. 1, 2 and 3, wherein a touch sensing block and a touch signal line are realized by adopting the same layer of metal, and a binding area comprises a first binding area, wherein the first binding area is provided with a driving chip design, and an external lead (IC lead) design is arranged between the first binding area and an integrated circuit.

The external lead is prepared by adopting the second source-drain electrode layer, the external lead 30 is in a naked design at the corresponding groove 60, and in the etching process of the touch signal wire and the first binding wiring, overetching can be generated on the external lead at the groove, so that the second source-drain electrode layer is thinned or the external lead is broken, and the product has poor functionality.

Therefore, the existing touch display panel has the technical problem that the external lead is broken at the groove.

Disclosure of Invention

The embodiment of the application provides a touch display panel, which can relieve the technical problem that an external lead wire is broken at a groove of the traditional touch display panel.

The embodiment of the application provides a touch display panel, including display area, binding area and be located the display area with bind the district between the district and buckle the district, bind the district and include:

the driving wiring layer comprises an external signal wire;

the touch control wiring layer is of a single-layer metal structure, the touch control wiring layer comprises a first binding wiring and a second binding wiring, the first binding wiring is close to the bending area, the second binding wiring is arranged on one side, far away from the bending area, of the first binding wiring, and the first binding wiring and the second binding wiring are arranged on the driving wiring layer and are respectively connected with two ends of the external signal wire;

the first flat layer is arranged on the driving wiring layer, and at least one groove is formed in the first flat layer, close to the first binding wiring;

wherein the first bonding wire covers at least the groove arrangement.

Optionally, in some embodiments of the present application, the first bonding wire includes a first portion disposed in the groove, and a second portion connected to the first portion, where the second portion is disposed on the touch pad layer, and the first portion covers the external signal line disposed at the groove.

Optionally, in some embodiments of the present application, a second flat layer is disposed on the touch routing layer, and a through hole is disposed on the second flat layer corresponding to the second portion, and the through hole and the first portion are disposed in a dislocation manner.

Optionally, in some embodiments of the present application, a driving chip is disposed on the second flat layer, the driving chip is disposed in alignment with the through hole, and the driving chip is connected with the second portion through the through hole.

Optionally, in some embodiments of the present application, the grooves are arranged in a step shape.

Optionally, in some embodiments of the present application, the groove includes a first groove and a second groove, the first groove is disposed adjacent to the first binding trace, and a width of the first groove is greater than a width of the second groove.

Optionally, in some embodiments of the present application, a width of the first bonding wire is greater than a width of the external signal wire.

Optionally, in some embodiments of the present application, the driving wiring layer includes a first driving wiring layer and a second driving wiring layer that are stacked, where the first driving wiring layer includes a first external signal line, and the second driving wiring layer includes a second external signal line, where the first external signal line and the second external signal line are in one-to-one correspondence and are arranged in parallel.

Optionally, in some embodiments of the present application, the driving trace layer is a single-layer metal structure, and any one of the external signal lines includes a first portion disposed in a polygonal shape and a second portion disposed in a linear shape, where the first portion and the second portion are connected to each other.

Optionally, in some embodiments of the present application, the touch routing layer further includes a touch signal line and a touch sensing block, where the touch signal line and the touch sensing block are disposed on the same layer, and a connection manner of the touch signal line and the touch sensing block is a single-layer mutual capacitance type or a single-layer self-capacitance type.

The touch display panel that this embodiment provided includes the display area, binds the district and is located the display area with bind the district between the district and buckle the district, bind the district including drive walk line layer, touch-control walk line layer, first flat layer, the drive walk line layer including external signal line, touch-control walk line layer is individual layer metal structure, touch-control walk line layer including first binding walk line, second binding walk line, first binding walk line be close to buckle the district setting, the second binding walk line set up in first binding walk line keep away from one side of buckling the district, first binding walk line with the second binding walk line set up in on the drive walk line layer and respectively with the both ends of external signal line are connected, first flat layer set up in on the drive walk line layer, first flat layer is close to first binding walk line department and is provided with at least one recess, wherein, first binding walk line cover at least and set up. The groove is covered at least by the first binding wire, when the first binding wire and the touch signal wire are formed by etching, the external signal wire at the groove cannot be etched, and the technical problem that the external lead wire is broken at the groove of the traditional touch display panel is solved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic top view of a conventional touch display panel;

FIG. 2 is a schematic cross-sectional view of a conventional touch display panel A-A;

FIG. 3 is a schematic cross-sectional view of a conventional touch display panel B-B;

FIG. 4 is a schematic top view of the touch display panel provided in the present application;

FIG. 5 is a schematic cross-sectional view of a touch display panel C-C provided herein;

FIG. 6 is a schematic cross-sectional view of a touch display panel D-D according to the first embodiment;

FIG. 7 is a schematic cross-sectional view of a second type of touch display panel D-D provided herein;

FIG. 8 is a schematic cross-sectional view of a third embodiment of a touch display panel D-D provided herein;

fig. 9 is a schematic cross-sectional view of an external signal line of a touch display panel provided in the present application;

fig. 10 is a schematic cross-sectional view of an external signal line of a touch display panel provided in the present application;

FIG. 11 is a schematic cross-sectional view of a touch display panel E-E provided herein;

FIG. 12 is a schematic cross-sectional view of a touch display panel D-D according to the fourth embodiment;

fig. 13 is a schematic cross-sectional view of a touch display panel D-D according to the fifth embodiment.

Reference numerals illustrate:

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and explanation only and is not intended to limit the present application. In this application, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used to generally refer to the upper and lower positions of the device in actual use or operation, and specifically the orientation of the drawing figures; while "inner" and "outer" are for the outline of the device.

Referring to fig. 1 to 3, fig. 1 is a schematic top view of a conventional touch display panel, fig. 2 is a schematic cross-sectional view of a conventional touch display panel A-A, and fig. 3 is a schematic cross-sectional view of a conventional touch display panel B-B.

In the conventional touch display panel, as shown in fig. 1, the touch display panel is a single-layer self-capacitance type, the touch signal line 40 is connected with the touch sensing block 50, and an IC lead area 6 is further included between the first binding area 4 and the first binding area 5 in the binding area 3, wherein the first binding area 4 is provided with a driving chip, the first binding area 5 is provided with a flexible circuit board, and the IC lead area 6 is provided with an external signal line 30 for connecting the driving chip with the flexible circuit board.

As shown in fig. 2 and 3, the IC lead area 6 further includes a groove 60, the groove 60 is disposed near the first bonding wire 10, the external signal wire 30 is exposed at the groove 60, and when the touch wire layer is formed by etching, the external signal wire 30 at the groove 60 is easily etched, resulting in wire breakage. Based on this, the embodiment of the present application provides a touch display panel for preventing the external signal line 30 at the groove 60 from being broken.

Referring to fig. 4-13, the application provides a touch display panel, the touch display panel includes a display area 1, a binding area 3, and a bending area 2 located between the display area 1 and the binding area 3, the binding area 3 includes a driving wire layer, a touch wire layer, and a first flat layer 70, the driving wire layer includes an external signal wire 30, the touch wire layer is of a single-layer metal structure, the touch wire layer includes a first binding wire 10 and a second binding wire 20, the first binding wire 10 is close to the bending area 2, the second binding wire 20 is disposed on one side of the first binding wire 10 away from the bending area 2, the first binding wire 10 and the second binding wire 20 are disposed on the driving wire layer and are respectively connected with two ends of the external signal wire 30, the first layer 70 is disposed on the driving wire layer, the first binding wire layer 70 is close to the first binding wire layer 10, and at least one groove 60 is disposed on the first binding wire layer, and at least one groove 60 is covered on the first binding wire layer.

The groove 60 is at least covered by the first binding wiring 10, and when the first binding wiring 10 and the touch signal wire 40 are formed by etching, the external signal wire 30 at the groove 60 cannot be etched, so that the technical problem that an external lead is broken at the groove 60 of the traditional touch display panel is solved.

The driving wiring layer further includes a driving signal line for providing a driving signal to the pixels of the display area 1.

Wherein the grooves 60 are used for relieving bending stress to which the binding area 3 is subjected.

The technical solutions of the present application will now be described with reference to specific embodiments.

Referring to fig. 4 to 6, the touch mode of the touch display panel is a single-layer self-capacitance type, wherein the touch trace layer is a single-layer metal structure, and the touch sensing block 50 and the touch signal line 40 are arranged on the same layer.

In this embodiment, the touch signal line 40 is prepared in the same process as the first binding wire 10 and the second binding wire 20, the touch signal line 40 is used for transmitting a touch signal to the touch sensing block 50, the first binding wire 10 is used for binding a driving chip, one end of the first binding wire 10 is connected with the driving signal line and is used for providing a driving signal for the displayed pixel, the other end of the first binding wire 10 is connected with the second binding wire 20 through the external signal line 30, and the second binding wire 20 is used for binding a flexible circuit board and is used for providing a power signal for the driving chip.

It should be noted that the first binding terminal includes at least two metal wires, the uppermost layer near one side of the driving chip is the first binding wire 10, and the second binding terminal also includes at least two metal wires, the uppermost layer near one side of the flexible circuit board is the second binding wire 20.

In one embodiment, the driving signal line located at one side of the bonding area 3 includes only a data driving signal line, one end of the data driving signal line is connected to the first bonding trace 10, the other end of the data driving signal line is connected to the data line, a GOA area is further disposed at the outer side of the display area 1 in the other direction, and a scan driving signal line is disposed at the GOA area and connected to the scan line, so as to provide a scan driving signal for the pixel.

In another embodiment, the driving signal lines located at one side of the bonding area 3 may further include a data driving signal line and a scanning driving signal line, where the data driving signal line and the scanning driving signal line are respectively connected with the first bonding wires 10 in a one-to-one correspondence manner, and the scanning driving signal line is connected with the scanning lines in a one-to-one correspondence manner, so as to realize a line-by-line scanning in a time-division manner.

In this embodiment, the first bonding wire 10 is disposed to cover at least the groove 60, and the first bonding wire 10 includes a first portion disposed in the groove 60, and a second portion connected to the first portion, where the second portion is disposed on the touch wire layer, and the first portion is disposed to cover the external signal wire 30 at the groove 60.

In this embodiment, the first bonding wire 10 may further include a third portion located on the first planarization layer 70, where a coverage area of the first bonding wire 10 corresponds to the opening of the optical mask, and an area and a width of the first bonding wire 10 covering a region except for the groove 60 are not limited, which are determined according to the optical mask in an actual process, but at least it is required to ensure that the first bonding wire 10 covers the groove 60, so that the external signal wire 30 at the groove 60 is not excessively etched, resulting in wire breakage.

In this embodiment, a second flat layer 80 is disposed on the touch routing layer, a through hole 150 is disposed on the second flat layer 80 corresponding to the second portion, the through hole 150 and the first portion are disposed in a staggered manner, a driving chip is disposed on the second flat layer 80, the driving chip and the through hole 150 are disposed in a aligned manner, and the driving chip and the second portion are connected through the through hole 150, wherein the through hole 150 is used for connecting the first binding routing 10 with the driving chip, so that a driving signal can be transmitted into the display area 1 through the first binding routing 10.

It should be noted that the width of the first bonding wire 10 is greater than the width of the external signal wire 30, so that the first bonding wire 10 covers the external signal wire 30 at the groove 60, and a phenomenon that a part of the external signal wire 30 is not covered by the first bonding wire 10 to cause a part of the position wire is broken is prevented.

It should be noted that the material of any of the metal traces of the present application may include at least one metal of molybdenum (Mo), aluminum (Al), platinum (Pt), palladium (Pd), silver (Ag), magnesium (Mg), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), calcium (Ca), titanium (Ti), tantalum (Ta), and tungsten (W); the metal wire may be any one of the first bonding wire 10, the second bonding wire 20, the touch signal wire 40, and the external signal wire 30.

Referring to fig. 7, which is a schematic cross-sectional view of the touch display panel D-D of the present application, the grooves 60 may be arranged in a step shape.

In this embodiment, the first flat layer 70 forms the grooves 60 in a stepped configuration, wherein the steps of adjacent steps are the same, and the step is the vertical distance between the upper surface of one step and the upper surface of another step below the one step.

In this embodiment, the step-like recess 60 may have a symmetrical shape with respect to itself.

In the present embodiment, the side walls of the groove 60 on the side away from the display area 1 may be provided in a stepwise manner, or the side walls of the groove 60 on the side closer to the display area 1 may be provided in a stepwise manner.

In this embodiment, by improving the shape of the groove 60, the stepped arrangement can enhance the effect of the groove 60 in buffering stress, and prevent the external signal line 30 at the groove 60 from breaking due to stress.

Referring to fig. 8, which is another schematic cross-sectional view of the touch display panel D-D of the present application, the groove 60 includes a first groove 601 and a second groove 602, the first groove 601 is disposed near the first bonding wire 10, and a width of the first groove 601 is greater than a width of the second groove 602.

In this embodiment, since the bending stress generated at the bending region 2 is transferred to the groove 60, and the first groove 601 is disposed near the bending region 2, the effect of relieving the stress transferred from the bending region 2 is better when the width of the first groove 601 is larger.

It should be noted that the first groove 601 and/or the second groove 602 may be configured in a stepped manner, which further enhances the stress relief effect of the groove 60.

In this embodiment, the depth of the first groove 601 and the depth of the second groove 602 may not be equal.

Wherein, the depth of the first groove 601 may be smaller than the thickness of the first planarization layer 70.

The depth of the second groove 602 may also be smaller than the thickness of the first flat layer 70.

It is to be understood that, in this embodiment, the number of the first grooves 601, the number of the second grooves 602, the shape of the first grooves 601 and the shape of the second grooves 602 are not particularly limited, and the cross-sectional shapes of the first grooves 601 and the second grooves 602 include, but are not limited to, triangle, rectangle, circular arc, and step, where the shapes of the first grooves 601 and the second grooves 602 may be the same or different.

Please refer to fig. 9, which is a schematic cross-sectional view of the external signal line 30.

In this embodiment, the driving trace layer includes a first driving trace layer and a second driving trace layer that are stacked, where the first driving trace layer includes a first external signal line 301, and the second driving trace layer includes a second external signal line 302, where the first external signal line 301 and the second external signal line 302 are in one-to-one correspondence and are arranged in parallel.

The external signal line 30 includes the first external signal line 301 and the second external signal line 302, where the first external signal line 301 and the second external signal line 302 are respectively located at different layers of the touch display panel.

The first external signal line 301 is disposed on the inorganic layer 90, an insulating pattern disposed at intervals is disposed on the first external signal line 301, a portion of the second external signal line 302 is disposed on the insulating pattern, another portion of the second external signal line 302 is connected with the first external signal line 301, and the first external signal line 301 and the second external signal line 302 are connected in parallel.

In this embodiment, as shown in fig. 9, the first external signal line 301 and the second external signal line 302 may be symmetrically disposed.

Please refer to fig. 10, which is a schematic cross-sectional view of the external signal line 30.

In this embodiment, the driving trace layer is a single-layer metal structure, and any one of the external signal lines 30 includes a first portion disposed in a polygonal shape and a second portion disposed in a linear shape, where the first portion and the second portion are connected to each other.

In this embodiment, the first portion of the external signal line 30 is disposed in a polygonal shape, and has two signal transmission channels, and when one signal transmission channel is broken or abnormal, the other signal transmission channel can ensure normal transmission of signals, so as to avoid the phenomenon that the external signal line 30 cannot transmit signals due to broken portions of the signal line.

In this embodiment, the first portion may further include at least three signal transmission channels, so as to further alleviate the technical problem that signals cannot be transmitted due to disconnection at a portion of the external signal line 30.

In this embodiment, the external signal line 30 may also be overlapped with the repair signal line, where the external signal line 30 and the repair signal line are located in different layers, and when the external signal line 30 is broken, the external signal line 30 at two ends of the broken line is connected with the repair signal line through a via hole by using a laser or other manners, so as to recover the signal transmission function of the external signal line 30.

Further, positioning marks may be provided at two ends of the groove 60, and when the external signal line 30 is broken, a via hole is formed at the positioning mark, so that the external signal line 30 is connected with the repair signal line, thereby repairing the broken line at the groove 60, and enabling the external signal line 30 to recover the signal transmission function.

Further, the distance between the edge of the groove 60 near the positioning mark and the positioning mark is greater than a preset value, so as to improve the repairing effect and avoid repairing failure caused by the fact that the repaired area is located in the fracture area.

Further, the repair area is an area between adjacent positioning marks, the width of the repair area is larger than the width of the groove 60, and the direction of the width is consistent with the direction of the bending area 2 away from the display area 1.

Referring to fig. 4 and 11, a schematic cross-sectional view of a touch display panel E-E provided in this embodiment is shown, where the touch display panel is a single-layer self-contained type, and the touch display panel includes an array layer 100, a light-emitting functional layer 110, a packaging layer 120, an inorganic layer 90, a touch signal line 40, and a touch sensing block 50, and the touch signal line 40 and the touch sensing block 50 are arranged on the same layer.

The array layer 100 comprises a substrate, a shading layer and a buffer layer which are arranged on the substrate, an active layer arranged on the buffer layer, a gate insulating layer arranged above the active layer, a grid electrode arranged on the gate insulating layer, an interlayer insulating layer arranged above the grid electrode and a passivation layer; the array layer has the technical effect of driving the light-emitting functional layer to emit light.

The light-emitting functional layer comprises an anode, a pixel definition layer, a light-emitting layer and a cathode which are sequentially arranged above the array layer, and the light-emitting layer comprises a hole injection layer, a hole transport layer, a quantum dot layer, an electron transport layer and an electron injection layer in the direction from the anode to the cathode.

In this embodiment, since the electron transport rate is greater than the hole transport rate, there is a problem of electron accumulation at the quantum dot layer, thereby causing exciton quenching; therefore, the application is in the quantum dot layer is close to one side of electron injection layer can be provided with multilayer insulating material layer, insulating material layer is used for reducing the migration rate of electron, avoids the electron to pile up in quantum dot layer department, causes the exciton quenching, influences the display effect.

Further, transparent isolation layers can be further arranged between the adjacent quantum dot layers with different colors, the energy band gap of the transparent isolation layers is large, the quantum dot layers emitting light with long wave bands can be prevented from transmitting exciton energy to one side of the quantum dot layers emitting light with short wave bands, uneven light-emitting brightness of the quantum dot layers with different colors is avoided, and the technical problem of color cast is solved.

In this embodiment, the groove 60 of the IC lead area 6 is covered by the first bonding wire 10, so as to avoid the disconnection of the external signal wire 30 at the groove 60.

In an embodiment, the touch display panel may be a single-layer mutual capacitance type, wherein the driving electrode, the touch driving line and the touch sensing line are all arranged on the same layer, so that the thickness of the film layer of the touch display panel is further reduced, and compared with a single-layer self-capacitance type, the touch display panel has the technical effect of realizing touch sensing on multiple points simultaneously; the touch display panel can realize a single-layer metal structure, so that the thickness of a film layer is reduced, and the effect of simultaneous touch sensing at a plurality of positions can be realized.

Fig. 12 is a schematic cross-sectional view of a touch display panel D-D according to another embodiment of the present disclosure.

In this embodiment, the first planarization layer 70 is further disposed at the groove 60, and the thickness of the first planarization layer 70 in the groove 60 is smaller than that of the first planarization layer 70 in other areas.

In this embodiment, by leaving a thin first flat layer 70 at the groove 60, when the first bonding trace 10 and the touch signal line 40 are etched, excessive etching of the external signal line 30 at the groove 60 is not performed, and disconnection of the groove 60 from the external signal line 30 is avoided.

In the present embodiment, the process of the first bonding wire 10 is not changed, and only when the first planarization layer 70 is formed, the first planarization layer 70 at the groove 60 is not completely removed by the photolithography process, so as to protect the external signal line 30 at the groove 60 and reduce the effect of buffering stress of the groove 60.

In this embodiment, the depth of the groove 60 is greater than half the thickness of the first flat layer 70, so as to avoid the poor effect of buffering stress caused by too small depth of the groove 60.

Fig. 13 is a schematic cross-sectional view of a touch display panel D-D according to another embodiment of the present disclosure.

In this embodiment, a metal routing layer 160 is further disposed above the touch routing layer, the first touch routing layer is disposed on the first flat layer 70, the first interlayer insulating layer 130 is disposed on the touch routing layer, the metal routing layer 160 is disposed on the first interlayer insulating layer 130, and the second interlayer insulating layer 140 is disposed on the metal routing layer 160.

In the present embodiment, at least the first interlayer insulating layer 130 is provided to cover the groove 60.

In this embodiment, by disposing another metal wiring layer 160 on the touch wiring layer, the first interlayer insulating layer 130 is used to space the touch wiring layer from the metal wiring layer 160, and the first interlayer insulating layer 130 can cover the groove 60, so as to achieve the effect of avoiding the external connection of the signal line 30 at the groove 60.

In this embodiment, the metal routing layer 160 may be another touch routing layer, that is, a portion of the routing is located above the touch routing layer through reasonable routing, and the touch routing layer and the metal routing layer 160 are insulated by the first interlayer insulating layer 130.

The application also provides a display device and a display module, wherein the display module comprises the touch display panel, and a back plate, a rubber frame, an optical membrane, a light guide plate and the like which are arranged on one side of the touch display panel. The display module and the display device both comprise the touch display panel, and are not described herein again.

The application also provides a touch display panel manufacturing method, which at least comprises the step of manufacturing the first binding wire through a first photomask, wherein the first binding wire covers the groove.

The first flat layer can be prepared from a second photomask, the first flat layer comprises the grooves, and the depth of the grooves is smaller than the thickness of the first flat layer; i.e. the yellow light process does not completely remove the first planarization layer at the bottom surface of the recess.

The touch display panel provided by the embodiment comprises a display area, a binding area and a bending area located between the display area and the binding area, wherein the binding area comprises a driving wiring layer, a touch wiring layer and a first flat layer, the driving wiring layer comprises an external signal wire, the touch wiring layer is of a single-layer metal structure, the touch wiring layer comprises a first binding wiring and a second binding wiring, the first binding wiring is close to the bending area, the second binding wiring is arranged on one side, away from the bending area, of the first binding wiring, the second binding wiring is arranged on the driving wiring layer and is respectively connected with two ends of the external signal wire, the first flat layer is arranged on the driving wiring layer, the first flat layer is close to the first binding wiring, at least one groove is formed in the position, close to the first binding wiring, of the first binding wiring, and at least one groove is covered by the first binding wiring. The groove is covered at least by the first binding wire, when the first binding wire and the touch signal wire are formed by etching, the external signal wire at the groove cannot be etched, and the technical problem that the external lead wire is broken at the groove of the traditional touch display panel is solved.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

The foregoing has described in detail a touch display panel provided by the embodiments of the present application, and specific examples have been applied herein to illustrate the principles and embodiments of the present application, where the foregoing examples are only for aiding in understanding the methods and core ideas of the present application; meanwhile, those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, and the present description should not be construed as limiting the present application in view of the above.

Claims

1. The utility model provides a touch-control display panel, includes display area, binding area and is located the display area with bind the district between the district and buckle, its characterized in that, bind the district and include:

the driving wiring layer comprises an external signal wire;

the first binding wire at least covers the groove, the first binding wire comprises a first part arranged in the groove and a second part connected with the first part, the second part is arranged on the touch wire layer, and the first part covers the external signal wire at the groove.

2. The touch display panel according to claim 1, wherein a second flat layer is disposed on the touch trace layer, and a through hole is disposed on the second flat layer corresponding to the second portion, and the through hole is disposed in a dislocation manner with respect to the first portion.

3. The touch display panel of claim 2, wherein a driving chip is disposed on the second flat layer, the driving chip is aligned with the through hole, and the driving chip is connected with the second portion through the through hole.

4. The touch display panel of claim 1, wherein the grooves are arranged in a step-like manner.

5. The touch display panel of claim 4, wherein the grooves comprise a first groove and a second groove, the first groove is disposed proximate to the first bonding trace, and a width of the first groove is greater than a width of the second groove.

6. The touch display panel of claim 1, wherein a width of the first bonding trace is greater than a width of the external signal line.

7. The touch display panel of claim 1, wherein the driving trace layer comprises a first driving trace layer and a second driving trace layer which are stacked, wherein the first driving trace layer comprises a first external signal line, the second driving trace layer comprises a second external signal line, and the first external signal line and the second external signal line are in one-to-one correspondence and are arranged in parallel.

8. The touch display panel according to claim 1, wherein the driving wiring layer has a single-layer metal structure, and any one of the external signal lines includes a first portion disposed in a polygonal shape and a second portion disposed in a linear shape, and the first portion and the second portion are connected to each other.

9. The touch display panel of claim 1, wherein the touch routing layer further comprises a touch signal line and a touch sensing block, the touch signal line and the touch sensing block are arranged on the same layer, and the touch signal line and the touch sensing block are connected in a single-layer mutual capacitance type or a single-layer self-capacitance type.