CN113918051A - Touch control display panel - Google Patents
Touch control display panel Download PDFInfo
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- CN113918051A CN113918051A CN202111179792.XA CN202111179792A CN113918051A CN 113918051 A CN113918051 A CN 113918051A CN 202111179792 A CN202111179792 A CN 202111179792A CN 113918051 A CN113918051 A CN 113918051A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Position Input By Displaying (AREA)
Abstract
The embodiment of the application discloses a touch display panel, which comprises a display area, a bending area and a binding area, wherein the binding area comprises a driving routing layer, a touch routing layer and a first flat layer, the driving routing layer comprises an external signal line, the touch routing layer is of a single-layer metal structure, the touch routing layer comprises a first binding routing which is arranged close to the bending area, the first flat layer is arranged on the driving routing layer, and at least one groove is arranged on the first flat layer close to the first binding routing, wherein the first binding routing at least covers the groove; according to the touch control display panel, the first binding wires at least cover the groove, when the first binding wires and the touch control signal wires are formed through etching, the external signal wires at the groove cannot be etched, and the technical problem that the external lead wires are broken at the groove in the existing touch control display panel is solved.
Description
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 the capacitive touch panel is self-contained type, and common touch structure design schematic diagrams are shown in fig. 1, fig. 2, and fig. 3, wherein the touch sensing block and the touch signal line are implemented by using the same layer of metal, the bonding region includes a first bonding region, the first bonding region has a driver chip design, and an external lead (IC lead) design is provided between the first bonding region and the integrated circuit.
The external lead is prepared by the second source drain layer, the external lead 30 is exposed at the position corresponding to the groove 60, and the external lead at the groove is over-etched in the etching process of the touch signal line and the first binding wire, so that the second source drain layer at the position is thinned or the external lead is broken, and the product has poor functionality.
Therefore, the conventional 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 solve the technical problem that the conventional touch display panel has the disconnection of an external lead at a groove.
The embodiment of the application provides a touch display panel, including the display area, bind the district and be located the display area with the bending zone between the binding area, bind the district and include:
the driving wiring layer comprises an external signal wire;
the touch wiring layer is of a single-layer metal structure and comprises a first binding wire and a second binding wire, the first binding wire is arranged close to the bending area, the second binding wire is arranged on one side, away from the bending area, of the first binding wire, and the first binding wire and the second binding wire 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 binding trace at least covers the groove.
Optionally, in some embodiments of the application, the first binding trace includes a first portion disposed in the groove and a second portion connected to the first portion, the second portion is disposed on the touch trace layer, and the first portion covers the external signal line disposed in the groove.
Optionally, in some embodiments of the application, a second flat layer is disposed on the touch routing layer, through holes are disposed in the second flat layer corresponding to the second portion, and the through holes and the first portion are disposed in a staggered manner.
Optionally, in some embodiments of the present application, a driving chip is disposed on the second planarization layer, the driving chip and the through hole are aligned, and the driving chip and the second portion are connected 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 near 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 trace is greater than a width of the external signal line.
Optionally, in some embodiments of the present application, the driving routing layer includes a first driving routing layer and a second driving routing layer which are stacked, where the first driving routing layer includes a first external signal line, the second driving routing layer includes 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.
Optionally, in some embodiments of the present application, the driving routing layer is a single-layer metal structure, and any one of the external signal lines includes a first portion arranged in a polygonal shape and a second portion arranged in a linear shape, and 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, 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 provided by the embodiment of the application comprises a display area, a binding area and a bending area between the display area and the binding area, wherein the binding area comprises a driving routing layer, a touch routing layer and a first flat layer, the driving routing layer comprises an external signal wire, the touch routing layer is of a single-layer metal structure, the touch routing layer comprises a first binding routing and a second binding routing, the first binding routing is close to the bending area, the second binding routing is arranged on one side, away from the bending area, of the first binding routing, the first binding routing and the second binding routing are arranged on the driving routing layer and are respectively connected with two ends of the external signal wire, the first flat layer is arranged on the driving routing layer, and at least one groove is arranged at the position, close to the first binding routing, of the first flat layer, wherein the first binding trace at least covers the groove. According to the touch display panel, the groove is arranged in a manner that the first binding wire at least covers the groove, when the first binding wire and the touch signal wire are formed through 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 in the existing touch display panel is solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
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 a 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 present disclosure;
FIG. 7 is a schematic cross-sectional view of a touch display panel D-D according to the present disclosure;
FIG. 8 is a schematic cross-sectional view of a touch display panel D-D according to the present disclosure;
fig. 9 is a schematic cross-sectional view of an external signal line of a touch display panel according to the present disclosure;
fig. 10 is a schematic cross-sectional view of an external signal line of a touch display panel according to the present disclosure;
FIG. 11 is a schematic cross-sectional view of a touch display panel E-E provided herein;
FIG. 12 is a fourth cross-sectional view at D-D of the touch display panel provided by the present application;
fig. 13 is a fifth cross-sectional view of a touch display panel D-D according to the present disclosure.
Description of reference numerals:
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Furthermore, it should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are given by way of illustration and explanation only, and are not intended to limit the scope of the invention. In the present application, unless indicated to the contrary, the use of the directional terms "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, and more particularly to the orientation of the figures of the drawings; while "inner" and "outer" are with respect to 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 existing touch display panel, as shown in fig. 1, the touch display panel is a single-layer self-contained type, the touch signal line 40 is connected to the touch sensing block 50, the first binding region 4 and the IC lead region 6 are further included between the first binding region 5 and the first binding region 3, wherein the first binding region 4 is provided with a driver chip, the first binding region 5 is provided with a flexible circuit board, and the IC lead region 6 is provided with an external signal line 30 for connecting the driver chip and 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 binding trace 10, the external signal line 30 is exposed at the groove 60, and when the touch trace layer is formed by etching, the external signal line 30 at the groove 60 is easily over-etched, which leads to disconnection. Accordingly, 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 to 13, the present application provides a touch display panel, where the touch display panel includes a display area 1, a bonding area 3, and a bending area 2 located between the display area 1 and the bonding area 3, the bonding area 3 includes a driving routing layer, a touch routing layer, and a first flat layer 70, the driving routing layer includes an external signal line 30, the touch routing layer is a single-layer metal structure, the touch routing layer includes a first bonding trace 10 and a second bonding trace 20, the first bonding trace 10 is disposed near the bending area 2, the second bonding trace 20 is disposed on a side of the first bonding trace 10 away from the bending area 2, the first bonding trace 10 and the second bonding trace 20 are disposed on the driving routing layer and are respectively connected to two ends of the external signal line 30, the first flat layer 70 is disposed on the driving routing layer, at least one groove 60 is formed in the first planar layer 70 near the first bonding trace 10, wherein the first bonding trace 10 at least covers the groove 60.
According to the touch display panel, the first binding wire 10 at least covers the groove 60, when the first binding wire 10 and the touch signal wire 40 are formed through etching, the external signal wire 30 at the groove 60 cannot be etched, and the technical problem that the external lead wire is broken at the groove 60 in the existing touch display panel is solved.
Wherein the driving wiring layer further comprises driving signal lines for providing driving signals to the pixels of the display area 1.
Wherein the groove 60 is used for relieving bending stress to which the binding region 3 is subjected.
The technical solution of the present application will now be described with reference to specific embodiments.
Referring to fig. 4 to 6, the touch control mode of the touch control display panel of the present application is a single-layer self-contained mode, wherein the touch control routing layer is a single-layer metal structure, and the touch control sensing block 50 and the touch control signal line 40 are disposed on the same layer.
In this embodiment, the touch signal line 40 is prepared in the same step as the first binding line 10 and the second binding line 20, the touch signal line 40 is configured to transmit a touch signal to the touch sensing block 50, the first binding line 10 is configured to bind a driver chip, one end of the first binding line 10 is connected to the driver signal line and configured to provide a driver signal for the displayed pixel, the other end of the first binding line 10 is connected to the second binding line 20 through the external signal line 30, and the second binding line 20 is configured to bind a flexible circuit board and configured to provide a power signal for the driver chip.
It should be noted that the first binding terminal includes at least two metal wires, the top layer near one side of the driver chip is the first binding wire 10, the second binding terminal also includes at least two metal wires, and the top layer near one side of the flexible circuit board is the second binding wire 20.
In an embodiment, the driving signal line located at one side of the bonding region 3 only includes 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 a data line, a GOA region is further disposed on the outer side of the display region 1 in the other direction, a scanning driving signal line is disposed at the GOA region, and the scanning driving signal line is connected to the scanning line to provide a scanning driving signal for the pixel.
In another embodiment, the driving signal lines on one side of the bonding area 3 may further include data driving signal lines and scanning driving signal lines, where the data driving signal lines and the scanning driving signal lines are respectively connected to the first bonding traces 10 in a one-to-one correspondence, and the scanning driving signal lines are connected to the scanning lines in a one-to-one correspondence, so as to implement sub-timing and sub-row scanning.
In this embodiment, the first binding trace 10 at least covers the groove 60, and the first binding trace 10 includes a first portion disposed in the groove 60 and a second portion connected to the first portion, the second portion is disposed on the touch trace layer, and the first portion covers the external signal line 30 at the groove 60.
In this embodiment, the first bonding trace 10 may further include a third portion located on the first flat layer 70, a coverage area of the first bonding trace 10 corresponds to the opening of the mask, and the scheme does not limit the area and the width of the first bonding trace 10 covering the area except the groove 60, which is determined according to the mask in the actual manufacturing process, but at least needs to ensure that the first bonding trace 10 covers the groove 60, so that the external signal line 30 at the groove 60 is not over-etched, which may cause a wire break.
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 an 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 trace 10 is greater than the width of the external signal line 30, so that the first bonding trace 10 covers the external signal line 30 at the groove 60, and a phenomenon that a part of the external signal line 30 is not covered by the first bonding trace 10, which causes a disconnection at a part of the position, is prevented.
It should be noted that the material of any metal trace 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 trace may be any one of the first bonding trace 10, the second bonding trace 20, the touch signal line 40, and the external signal line 30.
Referring to fig. 7, which is a schematic cross-sectional view of a touch display panel D-D according to 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 step-like arrangement, wherein the step difference between adjacent steps is the same, and the step difference 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 stepped groove 60 may have a symmetrical shape with respect to itself.
In the present embodiment, the sidewall of the groove 60 on the side far from the display area 1 may be provided in a step shape, or the sidewall of the groove 60 on the side near the display area 1 may be provided in a step shape.
In this embodiment, by improving the shape of the groove 60, the stepped arrangement can enhance the effect of buffering the stress of the groove 60, and prevent the external signal line 30 at the groove 60 from being broken due to the stress.
Referring to fig. 8, another schematic cross-sectional view of a touch display panel D-D according to 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 trace 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 close to the bending region 2, when the width of the first groove 601 is larger, the effect of relieving the stress transferred from the bending region 2 is better.
It should be noted that the first groove 601 and/or the second groove 602 may be stepped, which further enhances the stress-relieving 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.
Wherein the depth of the second groove 602 may also be smaller than the thickness of the first planarization layer 70.
It can be understood that, in this embodiment, no particular limitation is imposed on 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, and the cross-sectional shapes of the first grooves 601 and the second grooves 602 include, but are not limited to, a triangle, a rectangle, an arc, and a step, wherein 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 of the present application.
In this embodiment, the driving routing layer includes a first driving routing layer and a second driving routing layer which are stacked, wherein the first driving routing layer includes a first external signal line 301, the second driving routing layer includes a second external signal line 302, and the first external signal line 301 corresponds to the second external signal line 302 in a one-to-one manner and is connected in parallel.
The external signal line 30 includes the first external signal line 301 and the second external signal line 302, and the first external signal line 301 and the second external signal line 302 are respectively located on different layers of the touch display panel.
In this embodiment, the first external signal line 301 is disposed on the inorganic layer 90, the first external signal line 301 is disposed with insulating patterns disposed at intervals, the second external signal line 302 is partially disposed on the insulating patterns, and the other portion is connected to the first external signal line 301, and the first external signal line 301 and the second external signal line 302 are connected in parallel, so that the impedance is reduced, the voltage drop is reduced, and the signal transmission of the external signal line 30 is facilitated.
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 of the present application.
In this embodiment, the driving routing layer is a single-layer metal structure, and any one of the external signal lines 30 includes a first portion arranged in a polygonal shape and a second portion arranged in a linear shape, and 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 polygonal, and has two signal transmission channels, 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 partial position breakage.
In this embodiment, the first portion may further include at least three signal transmission channels, so as to further alleviate a technical problem that a signal cannot be transmitted due to disconnection at a position of the external signal line 30.
In this embodiment, the external signal line 30 may be overlapped with the repair signal line, the external signal line 30 and the repair signal line are located on different layers, and when the external signal line 30 is broken, the external signal line 30 and the repair signal line at two ends of the broken line are connected through via holes in a laser mode, so as to recover the signal transmission function of the external signal line 30.
Furthermore, the two ends of the groove 60 can be respectively provided with a positioning mark, when the external signal line 30 is broken, the external signal line 30 is connected with the repair signal line by forming a via hole at the positioning mark, so that the broken line at the groove 60 can be repaired, and the external signal line 30 can recover the signal transmission function.
Furthermore, the distance between the edge of the groove 60 close to the positioning mark and the positioning mark is larger than a preset value, so that the repairing effect is improved, and the repairing failure caused by the fact that a repaired area is located in the fracture area is avoided.
Further, the repair area is an area between adjacent positioning marks, the width of the repair area is greater than the width of the groove 60, and the direction of the width is consistent with the direction of the bending area 2 departing from the display area 1.
Referring to fig. 4 and fig. 11, which are schematic cross-sectional views of a touch display panel E-E provided in this embodiment, the touch display panel is a single-layer self-contained type, wherein the touch display panel includes an array layer 100, a light-emitting functional layer 110, an encapsulation 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 disposed on the same layer.
The array layer 100 comprises a substrate, a light shielding layer and a buffer layer arranged on the substrate, an active layer arranged on the buffer layer, a gate insulating layer arranged above the active layer, a gate arranged on the gate insulating layer, an interlayer insulating layer arranged above the gate, 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 defining 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 transport rate of electrons is greater than that of holes, there is a problem of electron accumulation at the quantum dot layer, which leads to exciton quenching; therefore, the quantum dot layer can be provided with a plurality of insulating material layers on one side close to the electron injection layer, and the insulating material layers are used for reducing the migration rate of electrons and avoiding the accumulation of electrons at the quantum dot layer to cause exciton quenching and influence the display effect.
Furthermore, a transparent isolation layer can be arranged between adjacent quantum dot layers with different colors, the energy band gap of the transparent isolation layer is large, the quantum dot layer emitting long-wave band light can be prevented from transmitting exciton energy to one side of the quantum dot layer emitting short-wave band light, the phenomenon that the luminance of the quantum dot layers with different colors is uneven is avoided, and the technical problem of color cast is solved.
In the present embodiment, the groove 60 of the IC lead area 6 is covered by the first bonding trace 10, so as to prevent the external signal line 30 at the groove 60 from being broken.
In an embodiment, the touch display panel may also be a single-layer mutual capacitance type, and the driving electrodes and the touch electrodes, the touch driving lines and the touch sensing lines are all arranged in the same layer, so as to further reduce the film thickness of the touch display panel, and compared with the single-layer self-capacitance type, the touch display panel has the technical effect of simultaneously realizing touch sensing for multiple points; 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 multiple positions can be realized.
Please refer to fig. 12, which is another schematic cross-sectional view of the touch display panel D-D according to the present embodiment.
In this embodiment, the first flat layer 70 is further disposed at the groove 60, and the thickness of the first flat layer 70 in the groove 60 is smaller than the thickness of the first flat layer 70 in other areas.
In this embodiment, by leaving the first flat layer 70 with a smaller thickness at the groove 60, when the first bonding trace 10 and the touch signal line 40 are formed by etching, the external signal line 30 at the groove 60 is not excessively etched, so that the disconnection of the external signal line 30 from the groove 60 is avoided.
In this embodiment, the process of the first bonding trace 10 does not need to be changed, and only when the first flat layer 70 is formed, the first flat layer 70 at the groove 60 is not completely removed by the yellow light process, so as to protect the external signal line 30 at the groove 60 and reduce the effect of the groove 60 on buffering stress.
In this embodiment, the depth of the groove 60 is greater than one half of the thickness of the first planarization layer 70, so as to avoid the poor effect of buffering stress caused by too small depth of the groove 60.
Please refer to fig. 13, which is another schematic cross-sectional view of the touch display panel D-D according to the present embodiment.
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 this embodiment, at least the first interlayer insulating layer 130 is disposed to cover the groove 60.
In this embodiment, another metal wiring layer 160 is disposed on the touch wiring layer, the touch wiring layer and the metal wiring layer 160 are separated by the first interlayer insulating layer 130, and the first interlayer insulating layer 130 can cover the groove 60, so as to prevent the external signal line 30 in the groove 60 from being broken.
In this embodiment, the metal routing layer 160 can be another touch routing layer but not limited to a touch routing layer, that is, a part of the routing is located above the touch routing layer through a reasonable routing arrangement, and the touch routing layer is insulated from the metal routing layer 160 through the arrangement of the first interlayer insulating layer 130.
The application also provides a display device, a display module assembly, wherein, the display module assembly include above-mentioned touch-control display panel and set up in backplate, gluey frame, optics diaphragm, light guide plate etc. of touch-control display panel one side. The display module and the display device both comprise the touch display panel, and the details are not repeated here.
The application further provides a touch display panel manufacturing method, which at least comprises the step of obtaining the first binding wire through first photomask manufacturing, wherein the first binding wire covers the groove.
The first flat layer can be prepared by a second photomask, the first flat layer comprises the groove, and the depth of the groove is smaller than the thickness of the first flat layer; that is, the first planarization layer at the bottom surface of the groove is not completely removed by the yellow light process.
The touch display panel provided by this embodiment includes a display area, a binding area, and a bending area located between the display area and the binding area, where the binding area includes a driving routing layer, a touch routing layer, and a first flat layer, the driving routing layer includes an external signal line, the touch routing layer is a single-layer metal structure, the touch routing layer includes a first binding routing and a second binding routing, the first binding routing is close to the bending area, the second binding routing is disposed on a side of the first binding routing away from the bending area, the first binding routing and the second binding routing are disposed on the driving routing layer and are respectively connected with two ends of the external signal line, the first flat layer is disposed on the driving routing layer, and at least one groove is disposed at a position of the first flat layer close to the first binding routing, wherein the first binding trace at least covers the groove. According to the touch display panel, the groove is arranged in a manner that the first binding wire at least covers the groove, when the first binding wire and the touch signal wire are formed through 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 in the existing touch display panel is solved.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The touch display panel provided by the embodiment of the present application is described in detail above, and a specific example is applied to illustrate the principle and the implementation manner of the present application, and the description of the embodiment is only used to help understanding the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A touch display panel comprises a display area, a binding area and a bending area between the display area and the binding area, wherein the binding area comprises:
the driving wiring layer comprises an external signal wire;
the touch wiring layer is of a single-layer metal structure and comprises a first binding wire and a second binding wire, the first binding wire is arranged close to the bending area, the second binding wire is arranged on one side, away from the bending area, of the first binding wire, and the first binding wire and the second binding wire 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 binding trace at least covers the groove.
2. The touch display panel of claim 1, wherein the first bonding trace comprises a first portion disposed in the groove and a second portion connected to the first portion, the second portion is disposed on the touch trace layer, and the first portion covers the external signal line disposed in the groove.
3. The touch display panel according to claim 2, wherein 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 is disposed in a staggered manner with respect to the first portion.
4. The touch display panel according to claim 3, wherein a driving chip is disposed on the second planarization layer, the driving chip and the through hole are aligned, and the driving chip and the second portion are connected through the through hole.
5. The touch display panel of claim 1, wherein the grooves are arranged in a step shape.
6. The touch display panel of claim 5, wherein the groove comprises a first groove and a second groove, the first groove is disposed near the first bonding trace, and a width of the first groove is greater than a width of the second groove.
7. The touch display panel of claim 1, wherein the width of the first bonding trace is greater than the width of the external signal line.
8. The touch display panel of claim 1, wherein the driving routing layers comprise a first driving routing layer and a second driving routing layer which are stacked, wherein the first driving routing layer comprises a first external signal line, the second driving routing layer comprises a second external signal line, and the first external signal line and the second external signal line are arranged in a one-to-one correspondence and in parallel.
9. The touch display panel according to claim 1, wherein the driving trace layer is a single-layer metal structure, and any one of the external signal lines includes a first portion arranged in a polygonal shape and a second portion arranged in a linear shape, and the first portion and the second portion are connected to each other.
10. The touch display panel according to 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 disposed on the same layer, and the touch signal line and the touch sensing block are connected in a single-layer mutual capacitance manner or a single-layer self-capacitance manner.
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| CN202111179792.XA CN113918051B (en) | 2021-10-11 | 2021-10-11 | Touch display panel |
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| CN202111179792.XA CN113918051B (en) | 2021-10-11 | 2021-10-11 | Touch display panel |
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| CN113918051A true CN113918051A (en) | 2022-01-11 |
| CN113918051B CN113918051B (en) | 2023-06-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114442384A (en) * | 2022-01-26 | 2022-05-06 | 绵阳惠科光电科技有限公司 | Array substrate and display panel |
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| CN109933234A (en) * | 2019-01-29 | 2019-06-25 | 昆山国显光电有限公司 | Touch-control display panel and display equipment |
| CN110379310A (en) * | 2019-07-22 | 2019-10-25 | 京东方科技集团股份有限公司 | A kind of Flexible Displays mould group and preparation method thereof, flexible display apparatus |
| CN111061395A (en) * | 2019-11-28 | 2020-04-24 | 武汉华星光电技术有限公司 | Touch display panel and preparation method thereof |
| CN112133729A (en) * | 2020-09-25 | 2020-12-25 | 京东方科技集团股份有限公司 | Display substrate, preparation method thereof and display device |
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| CN109933234A (en) * | 2019-01-29 | 2019-06-25 | 昆山国显光电有限公司 | Touch-control display panel and display equipment |
| CN110379310A (en) * | 2019-07-22 | 2019-10-25 | 京东方科技集团股份有限公司 | A kind of Flexible Displays mould group and preparation method thereof, flexible display apparatus |
| CN111061395A (en) * | 2019-11-28 | 2020-04-24 | 武汉华星光电技术有限公司 | Touch display panel and preparation method thereof |
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| CN114442384A (en) * | 2022-01-26 | 2022-05-06 | 绵阳惠科光电科技有限公司 | Array substrate and display panel |
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