CN112612371A - Touch display panel and touch display device - Google Patents
Touch display panel and touch display device Download PDFInfo
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- CN112612371A CN112612371A CN202011480058.2A CN202011480058A CN112612371A CN 112612371 A CN112612371 A CN 112612371A CN 202011480058 A CN202011480058 A CN 202011480058A CN 112612371 A CN112612371 A CN 112612371A
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- 238000005452 bending Methods 0.000 claims abstract description 19
- 239000000758 substrate Substances 0.000 claims description 22
- 238000004806 packaging method and process Methods 0.000 claims description 8
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 238000005530 etching Methods 0.000 description 8
- 230000000903 blocking effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 230000008054 signal transmission Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 235000009537 plain noodles Nutrition 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
- H05F3/00—Carrying-off electrostatic charges
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- Computer Networks & Wireless Communication (AREA)
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- General Physics & Mathematics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Position Input By Displaying (AREA)
Abstract
The embodiment of the invention provides a touch display panel and a touch display device, relates to the technical field of display, and increases the distance between touch signal lines in a step area. The panel includes: the display device comprises a display area and a non-display area, wherein the non-display area comprises a step area and a non-step area, and the step area comprises a wiring area, a bending area and a functional area; the retaining wall is arranged around the display area in the non-display area; the touch control signal line extends to the functional area from the non-step area, the wiring area and the bending area, the part of the touch control signal line positioned in the non-step area is a touch control wiring, the touch control wiring is positioned on one side of the retaining wall close to the display area, and the part of the touch control signal line positioned in the step area is a touch control lead; the electrostatic shielding signal line is positioned in the non-display area, the part of the electrostatic shielding signal line, which extends in the second direction in the step area, is positioned on one side of the retaining wall, which is far away from the display area, and the second direction is the extending direction of the retaining wall in the step area.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of display, in particular to a touch display panel and a touch display device.
[ background of the invention ]
In order to implement a touch function, a touch electrode and a touch signal line connected to the touch electrode are disposed in the touch display panel, and the touch signal line generally extends to a step area along a left frame and a right frame of the touch display panel. However, as the requirements of users on the design of the panel appearance are continuously improved, the narrow frame requirements limit the routing space in the step area, which leads to a smaller distance between the touch signal lines extending in the step area, and the problems of etching residue and the like easily occur in the manufacturing process of the touch signal lines, resulting in short circuit of the touch signal lines.
[ summary of the invention ]
In view of this, embodiments of the present invention provide a touch display panel and a touch display device, which increase the distance between the touch signal lines extending in the step area and reduce the risk of short circuit of the touch signal lines.
In one aspect, an embodiment of the present invention provides a touch display panel, including:
the display panel comprises a display area and a non-display area arranged outside the display area, wherein the non-display area comprises a step area and a non-step area, the step area comprises a wiring area, a bending area and a functional area which are arranged along a first direction, the functional area is bent to one side, back to a light-emitting surface, of the touch display panel through the bending area, and the first direction is the direction in which the display area points to the step area;
the substrate comprises a substrate base plate, wherein an array layer and a retaining wall are arranged on the substrate base plate, and the retaining wall is arranged in the non-display area and surrounds the display area;
the packaging layer is positioned on one side, back to the substrate base plate, of the array layer and the retaining wall;
the touch control electrode and the touch control signal wire are positioned on one side, back to the substrate, of the packaging layer, the touch control signal wire extends to the functional area from the non-step area, the wiring area and the bending area, the part, located in the non-step area, of the touch control signal wire is a touch control wiring, the touch control wiring is positioned on one side, close to the display area, of the retaining wall, and the part, located in the step area, of the touch control signal wire is a touch control lead wire;
the packaging layer is arranged on the back of the substrate, the electrostatic shielding signal line is arranged on one side of the substrate, the electrostatic shielding signal line is arranged in the non-display area, the part, extending along the second direction, of the step area is arranged on one side, away from the display area, of the retaining wall, and the second direction is the extending direction of the retaining wall in the step area.
In another aspect, an embodiment of the present invention provides a touch display device, including the touch display panel.
One of the above technical solutions has the following beneficial effects:
in the embodiment of the invention, the part of the electrostatic shielding signal wire extending along the second direction in the step area is positioned on one side of the retaining wall far away from the display area, so that the part of the wiring does not need to occupy space on one side of the retaining wall close to the display area, and therefore, when the touch lead extends in the area of the retaining wall close to one side of the display area, the distance of the part of the lead in the first direction can be increased to a certain extent, the lead is prevented from being too close to each other, and in the manufacturing process of the touch lead, the etching difficulty can be reduced, and the risk of short circuit of the touch lead caused by factors such as etching residues and the like is. In addition, the embodiment of the invention can still enable the touch-control wiring to be positioned at one side of the retaining wall close to the display area without adjusting the position of the touch-control wiring in the non-step area, thereby still effectively utilizing the oxygen-water-resisting function of the retaining wall and the electrostatic protection and anti-interference functions of the electrostatic shielding signal line to optimize the transmission quality of the touch-control signal. Therefore, the embodiment of the invention can increase the distance between the touch leads, improve the reliability of touch signal transmission and optimize the narrow frame performance and the touch performance of the panel under the condition that the frame width is limited.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is an extended schematic view of a touch signal line in the prior art;
fig. 2 is a schematic structural diagram of a touch display panel provided in an embodiment of the invention when the touch display panel is not bent;
FIG. 3 is an enlarged schematic view of the stepped region shown in FIG. 2;
FIG. 4 is a cross-sectional view taken along line A1-A2 of FIG. 2;
fig. 5 is a schematic view illustrating another extension of an electrostatic shielding signal line according to an embodiment of the invention;
fig. 6 is a schematic view illustrating another extension of an electrostatic shielding signal line according to an embodiment of the present invention;
fig. 7 is a schematic view illustrating another extending manner of a touch signal line according to an embodiment of the invention;
fig. 8 is a schematic view illustrating another extending manner of a touch signal line according to an embodiment of the present invention;
fig. 9 is a schematic view illustrating another extending manner of a touch signal line according to an embodiment of the invention;
fig. 10 is a schematic structural diagram of an electrostatic shielding signal line according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a touch display device according to an embodiment of the invention.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all 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 invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that although the terms first, second, third, etc. may be used to describe the lead segments in embodiments of the present invention, these lead segments should not be limited to these terms, which are used only to distinguish the lead segments from one another. For example, a first lead segment may also be referred to as a second lead segment, and similarly, a second lead segment may also be referred to as a first lead segment, without departing from the scope of embodiments of the present invention.
Before describing the technical solution of the embodiment of the present invention, the present invention first describes the problems existing in the prior art:
as shown in fig. 1, fig. 1 is an extended schematic view of a touch signal line in the prior art, the touch display panel includes a display area 1 'and a non-display area 2' surrounding the display area, and signal lines in the non-display area 2 ', such as a touch signal line 3' for implementing a touch function and an electrostatic shielding signal line 4 'for electrostatic protection and interference resistance, generally extend on a side of a barrier wall 5' close to the display area 1 'until crossing the barrier wall 5' in a step area 6 'to be electrically connected to a flip chip film bound to the step area 6'.
However, as the width of the panel frame is continuously reduced, the distance between the touch signal lines 3 ' extending in the step area 6 ' is also reduced, and thus the problem of short circuit of the touch signal lines 6 ' caused by etching residue and other factors is easily caused, and further the normal transmission of the touch signal is adversely affected.
To this end, an embodiment of the present invention provides a touch display panel, as shown in fig. 2 to 4, fig. 2 is a schematic structural view of the touch display panel provided in the embodiment of the present invention when the touch display panel is not bent, fig. 3 is an enlarged schematic view of a step area shown in fig. 2, and fig. 4 is a cross-sectional view of fig. 2 along a direction a1-a2, the touch display panel including: the display area 1 and the non-display area 2 that sets up outside the display area 1, non-display area 2 includes step district 3 and non-step district 4, and step district 3 includes walking line district 5, bending zone 6 and functional area 7 of arranging along first direction, and first direction is the direction that display area 1 points to step district 3, and wherein, functional area 7 is bound and is had cover brilliant film 8, and functional area 7 is buckled to the touch-control display panel one side of going back to the play plain noodles through bending zone 6.
The touch display panel further comprises a substrate base plate 9, wherein the substrate base plate 9 is provided with an array layer 10 and a retaining wall 11, and the retaining wall 11 is arranged around the display area 1 in the non-display area 2; a packaging layer 12 is arranged on one side of the array layer 10 and the retaining wall 11, which faces away from the substrate base plate 9, and a touch electrode 13, a touch signal line 14 and an electrostatic shielding signal line 17 are arranged on one side of the packaging layer 12, which faces away from the substrate base plate 9; the touch signal line 14 extends from the non-step area 4, the routing area 5 and the bending area 6 to the functional area 7 and is electrically connected with a touch driving chip on a flip-chip film 8 bound in the functional area 7, the part of the touch signal line 14 located in the non-step area 4 is a touch wire 15, the touch wire 15 is located on one side of the retaining wall 11 close to the display area 1, and the part of the touch signal line 14 located in the step area 3 is a touch lead 16; the electrostatic shielding signal line 17 is located in the non-display region 2, and a portion of the electrostatic shielding signal line 17 extending in the second direction in the step region 3 is located on a side of the blocking wall 11 away from the display region 1, and the second direction is an extending direction of the blocking wall 11 in the step region 3.
It should be noted that the touch electrode 13 may be a mutual capacitance type touch electrode as illustrated in fig. 2, in this case, the touch electrode 13 includes a sensing touch electrode and a driving touch electrode, and the touch signal line 14 may refer to a touch signal line 14 electrically connected to the sensing touch electrode or a touch signal line 14 electrically connected to the driving touch electrode. Alternatively, in other optional embodiments of the present invention, the touch electrode 13 may also be a self-contained touch electrode.
In the embodiment of the present invention, the portion of the electrostatic shielding signal line 17 extending along the second direction in the step area 3 is located on the side of the blocking wall 11 away from the display area 1, so that the routing of the portion does not need to occupy space on the side of the blocking wall 11 close to the display area 1, and thus, when the touch lead 16 extends in the area of the blocking wall 11 close to the display area 1, the distance d1 between the portion of the lead in the first direction can be increased to a certain extent, thereby avoiding the lead from being too close to each other, and in the manufacturing process, the etching difficulty can be reduced, thereby reducing the risk of short circuit of the touch lead 16 caused by etching residue and other factors. In addition, the embodiment of the invention does not need to adjust the position of the touch trace 15 in the non-step area 4, and the touch trace can still be positioned on one side of the retaining wall 11 close to the display area 1, so that the transmission quality of the touch signal can still be optimized by effectively utilizing the oxygen isolation function of the retaining wall 11 and the electrostatic protection and anti-interference functions of the electrostatic shielding signal line 17. Therefore, the embodiment of the invention can increase the distance between the touch leads, improve the reliability of touch signal transmission and optimize the narrow frame performance and the touch performance of the panel under the condition that the frame width is limited.
Note that the number of the electrostatic shielding signal lines 17 illustrated in the drawings is merely illustrative. In the present touch display panel, in order to improve the electrostatic protection capability and the anti-interference capability of the panel, a larger number of the electrostatic shielding signal lines 17 are usually disposed, and therefore, the portion of the electrostatic shielding signal lines 17 extending in the second direction in the step area 3 is disposed on the side of the retaining wall 11 far away from the display area 1, so that enough space is made to increase the distance between the touch leads 16.
In an embodiment, as shown in fig. 5, fig. 5 is a schematic view illustrating another extension manner of the electrostatic shielding signal line according to an embodiment of the invention, the electrostatic shielding signal line 17 includes a ground line 18, the ground line 18 is used for conducting away electrostatic charges to improve the electrostatic protection capability of the panel, the ground line 18 is disposed on the same layer as the touch signal line 14, and a portion of the ground line 18 extending in the non-step region 4 is located on a side of the blocking wall 11 away from the display region 1.
On one hand, in the non-step area 4 and the step area 3, the retaining walls are arranged between the grounding line 18 and the touch signal line 14 at intervals, so that the distance between the grounding line 18 and the touch signal line 14 is increased, the influence of static charges transmitted on the grounding line 18 on the touch signal transmitted on the touch signal line 14 is reduced, and the electrostatic protection capability of the panel is improved to a greater extent; on the other hand, the part of the grounding wire 18 extending in the non-stepped region 4 and the part of the grounding wire 18 extending in the stepped region 3 are both positioned on the same side of the retaining wall 11, so that the grounding wire 18 does not need to cross the retaining wall 11 when extending from the non-stepped region 4 to the stepped region 3, and the risk of the grounding wire 18 breaking at the boundary of the retaining wall 11 is reduced; on the other hand, the grounding line 18 is closer to the edge of the panel, and when external static charge invades the panel, the static charge can be guided away through the grounding line 18 at the edge of the panel, so that the risk of further invasion of the static charge towards the interior of the panel is reduced.
In one embodiment, referring to fig. 5 again, the electrostatic shielding signal line 17 includes a shielding line 19, the shielding line 19 is used for shielding interference of the touch signal, the shielding line 19 and the touch signal line 14 are disposed on the same layer, and a portion of the shielding line 19 extending in the non-step region 4 is located on a side of the retaining wall 11 away from the display region 1. At this time, the portion of the shielded line 19 extending in the non-stepped region 4 and the portion extending in the stepped region 3 are located on the same side of the dam 11, and the shielded line 19 does not need to cross the dam 11 when extending from the non-stepped region 4 to the stepped region 3, thereby reducing the risk of the shielded line 19 breaking at the boundary of the dam 11.
Alternatively, as shown in fig. 6, fig. 6 is a schematic view illustrating another extension manner of the electrostatic shielding signal line according to the embodiment of the present invention, in which the electrostatic shielding signal line 17 includes a shielding line 19, a portion of the shielding line 19 extending in the non-step region 4 is a first shielding lead 20, and a portion of the shielding line 19 extending in the step region 3 is a second shielding lead 21; the first shielding lead 20 and the touch signal lines 14 are disposed on the same layer, the first shielding lead 20 is located between the touch signal lines 14 and/or located on one side of the touch signal lines 14 close to the display area 1, and the second shielding lead 21 and the first shielding lead 20 are disposed on different layers.
On one hand, in the non-step region 4, no partition wall is needed between the first shielding lead 20 and the touch signal line 14, the distance is closer, the shielding performance of the shielding line 19 can be improved, and the anti-interference capability of the touch signal can be improved; on the other hand, the second shielding lead 21 and the touch signal line 14 are disposed in different layers, so that the second shielding lead 21 can be prevented from overlapping and contacting the touch lead 16 when crossing over the touch lead 16, and the distance between the touch leads 16 extending from the side of the retaining wall 11 close to the display area 1 can be increased by adjusting the extending mode of the second shielding lead 21 on the premise of ensuring the normal transmission of the touch signal.
In an implementation manner, as shown in fig. 7, fig. 7 is a schematic view illustrating another extending manner of the touch signal lines according to an embodiment of the present invention, in which the touch signal lines 14 include at least one first touch signal line 22, and the first touch signal line 22 is the touch signal line 14 on a side of the touch signal line 14 away from the display area 1; in the first touch signal line 22, the portion of the touch lead 16 extending in the second direction in the step area 3 is located on the side of the retaining wall 11 away from the display area 1, so as to further increase the distance between the touch leads 16 extending on the side of the retaining wall 11 toward the display area 1.
In addition, referring to fig. 3 again, after the touch lead 16 extending in the step area 3 extends laterally along the first direction, it crosses the retaining wall 11 and extends vertically along the second direction until it is electrically connected to the touch driving chip on the chip on film 8. Based on the design of the step area 3 of the current touch display panel, the length of the bending area 6 in the second direction decreases progressively along the first direction, and therefore, the part of the lead wires extending vertically needs to be closely arranged to match the size design of the bending area 6.
Based on this, in the embodiment of the present invention, as shown in fig. 8, fig. 8 is a schematic view illustrating another extending manner of the touch signal lines provided in the embodiment of the present invention, in which the routing area 5 includes a first routing area 23 and a second routing area 24, the first routing area 23 is located between the retaining wall 11 and the display area 1, and the second routing area 24 is located between the retaining wall 11 and the bending area 6; at least part of the touch lead 16 comprises a first lead segment 25 extending along the second direction in the first routing area 23, a second lead segment 26 extending from the first routing area 23 to the second routing area 24, a third lead segment 27 extending along the second direction in the second routing area 24, and a fourth lead segment 28 extending from the second routing area 24 to the bending area 6, which are connected in sequence; in two adjacent touch leads 16, the distance between the second lead segments 26 is greater than the distance between the first lead segments 25.
Compared with the extending manner that the touch leads 16 extend transversely along the first direction and then directly extend vertically to the flip chip film 8, in the embodiment of the present invention, by using the extending manner that the touch leads 16 extend transversely, extend vertically, extend transversely again, and extend vertically again, the distance d2 of the second lead segment 26 in the second direction can be further increased on the basis of increasing the distance d1 of the first lead segment 25 in the first direction, so as to reduce the difficulty in etching the lead segment across the retaining wall 11, and reduce the risk of short circuit between the touch leads 16.
Further, as shown in fig. 9, fig. 9 is a schematic view illustrating another extending manner of the touch signal line according to the embodiment of the present invention, the step area 3 has a dummy central axis 29 extending along the first direction, the bending area 6 includes two touch lead extending areas 30, the touch leads 16 extend from the touch lead extending areas 30 to the functional area 7, the touch leads 16 need to be closely arranged in the touch lead extending areas 30, and the two touch lead extending areas 30 are respectively located at two sides of the dummy central axis 29. Accordingly, the non-step area 4 includes two frame areas 31, and one frame area 31, the display area 1, and the other frame area 31 are arranged in the second direction.
Based on this, the touch signal lines 14 include at least one second touch signal line 32, the second touch signal line 32 is the touch signal line 14 on the side close to the display area 1 in the touch signal lines 14, the second lead segment 26 in the second touch signal line 32 on the same side as the dummy central axis 29 is located between the edge of the touch lead extension area 30 on the side close to the dummy central axis 29 and the dummy central axis 29, that is, the first lead segment 25 in the second touch signal line 32 extends to the side close to the dummy central axis 29 in the touch lead extension area 30, then the second lead segment 26 extends vertically, then the third lead segment 27 extends toward the side away from the dummy central axis 29 in the touch lead extension area 30, by which the space width occupied by the plurality of touch leads 16 in the second direction is larger, and correspondingly, the distance d2 between two adjacent touch leads 16 in the second direction is larger, thereby further increasing the spacing between the touch leads 16.
It should be noted that the dummy central axis 29 is only a virtual central axis introduced for clearly defining the extending manner of the second touch signal line 32, and in an actual product structure, the physical structure of the dummy central axis 29 does not exist.
Further, in order to increase the spacing d2 of the touch leads 16 in the second direction to a greater extent, the number of the second touch signal lines 32 is half of the number of the touch signal lines 14.
In addition, in order to make the arrangement of the touch leads 16 more regular and symmetrical, the two sides of the virtual central axis 29 have the same number of second touch signal lines 32.
In addition, if a crack is generated in the touch display panel, external water and oxygen may intrude into the panel along the crack, which may affect the service life of the panel. In the embodiment of the present invention, as shown in fig. 10, fig. 10 is a schematic structural diagram of the electrostatic shielding signal line provided in the embodiment of the present invention, and the electrostatic shielding signal line 17 may form a loop in the non-display area 2, for example, when the electrostatic shielding signal line 17 includes the ground line 18 and the shielding line 19, one end of the ground line 18 and one end of the shielding line 19 may be electrically connected to form a loop, and at this time, the electrostatic shielding signal line 17 is multiplexed as a crack detection signal line for detecting a crack generated on the substrate 9. Specifically, the current or resistance of the loop formed by the electrostatic shielding signal line 17 may be detected to determine whether or not the electrostatic shielding signal line 17 is broken, and if the electrostatic shielding signal line 17 is broken, it may indicate that there is a crack in the base substrate 9, and if the electrostatic shielding signal line 17 is not broken, it may indicate that there is no crack in the base substrate 9.
After the electrostatic shielding signal line 17 is multiplexed as a crack detection signal line, no additional crack detection signal line for detecting cracks needs to be arranged in the panel, so that the space occupied by the signal line in the non-display area 2 is saved, and the wiring distance between the signal lines in the non-display area 2, such as the touch signal lines 14, is further increased.
Based on the same inventive concept, an embodiment of the present invention further provides a touch display device, as shown in fig. 11, fig. 11 is a schematic structural diagram of the touch display device provided in the embodiment of the present invention, and the touch display device includes the touch display panel 100. The specific structure of the touch display panel 100 has been described in detail in the above embodiments, and is not described herein again. Of course, the display device shown in fig. 11 is only a schematic illustration, and the display device may be any electronic device with a display function, such as a mobile phone, a tablet computer, a notebook computer, an electronic book, or a television.
Since the touch display device provided by the embodiment of the invention includes the touch display panel 100, the touch display device can increase the distance between the touch leads 16 extending in the step area 3, thereby reducing the risk of short circuit of the touch leads 16 caused by etching residue and other factors, effectively improving the reliability of touch signal transmission, and optimizing the touch performance.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (11)
1. A touch display panel, comprising:
the display panel comprises a display area and a non-display area arranged outside the display area, wherein the non-display area comprises a step area and a non-step area, the step area comprises a wiring area, a bending area and a functional area which are arranged along a first direction, the functional area is bent to one side, back to a light-emitting surface, of the touch display panel through the bending area, and the first direction is the direction in which the display area points to the step area;
the substrate comprises a substrate base plate, wherein an array layer and a retaining wall are arranged on the substrate base plate, and the retaining wall is arranged in the non-display area and surrounds the display area;
the packaging layer is positioned on one side, back to the substrate base plate, of the array layer and the retaining wall;
the touch control electrode and the touch control signal wire are positioned on one side, back to the substrate, of the packaging layer, the touch control signal wire extends to the functional area from the non-step area, the wiring area and the bending area, the part, located in the non-step area, of the touch control signal wire is a touch control wiring, the touch control wiring is positioned on one side, close to the display area, of the retaining wall, and the part, located in the step area, of the touch control signal wire is a touch control lead wire;
the packaging layer is arranged on the back of the substrate, the electrostatic shielding signal line is arranged on one side of the substrate, the electrostatic shielding signal line is arranged in the non-display area, the part, extending along the second direction, of the step area is arranged on one side, away from the display area, of the retaining wall, and the second direction is the extending direction of the retaining wall in the step area.
2. The touch display panel of claim 1,
the electrostatic shielding signal line comprises a grounding line, the grounding line and the touch signal line are arranged on the same layer, and the part of the grounding line extending in the non-step area is located on one side, far away from the display area, of the retaining wall.
3. The touch display panel of claim 1,
the electrostatic shielding signal line comprises a shielding line, the shielding line and the touch signal line are arranged on the same layer, and the part of the shielding line extending in the non-step area is located on one side, far away from the display area, of the retaining wall.
4. The touch display panel of claim 1,
the electrostatic shielding signal line comprises a shielding line, the part of the shielding line extending in the non-step area is a first shielding lead, and the part of the shielding line extending in the step area is a second shielding lead;
the first shielding lead and the touch signal lines are arranged on the same layer, the first shielding lead is located between the touch signal lines and/or located on one side, close to the display area, of the touch signal lines, and the second shielding lead and the first shielding lead are arranged in a different layer.
5. The touch display panel of claim 1,
the touch signal lines comprise at least one first touch signal line, and the first touch signal line is the touch signal line on one side of the touch signal line, which is far away from the display area;
in the first touch signal line, the part of the touch lead wire extending along the second direction in the step area is positioned on one side of the retaining wall far away from the display area.
6. The touch display panel of claim 1,
the wiring area comprises a first wiring area and a second wiring area, the first wiring area is located between the retaining wall and the display area, and the second wiring area is located between the retaining wall and the bending area;
at least part of the touch lead comprises a first lead segment extending along the second direction in the first wiring area, a second lead segment extending from the first wiring area to the second wiring area, a third lead segment extending along the second direction in the second wiring area and a fourth lead segment extending from the second wiring area to the bending area, which are sequentially connected;
and in two adjacent touch control lead wires, the distance between the second lead wire sections is larger than the distance between the first lead wire sections.
7. The touch display panel of claim 6,
the step area is provided with a virtual central axis extending along the first direction, the bending area comprises two touch lead extending areas, the touch leads extend from the touch lead extending areas to the functional area, and the two touch lead extending areas are respectively positioned on two sides of the virtual central axis;
the non-step area comprises two frame areas, one frame area, the display area and the other frame area are arranged along the second direction;
the touch signal lines comprise at least one second touch signal line, the second touch signal line is one of the touch signal lines close to one side of the display area, and the second lead section in the second touch signal line which is positioned on the same side of the virtual central axis is positioned between the edge of one side of the touch lead extension area close to the virtual central axis and the virtual central axis.
8. The touch display panel of claim 7,
the number of the second touch signal lines is half of the number of the touch signal lines.
9. The touch display panel of claim 7,
the two sides of the virtual central axis are provided with the same number of second touch signal lines.
10. The touch display panel according to claim 1, wherein the electrostatic shielding signal line forms a loop in the non-display region, and the electrostatic shielding signal line is multiplexed as a crack detection signal line for detecting a crack generated on the substrate base plate.
11. A touch display device comprising the touch display panel according to any one of claims 1 to 10.
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