CN112612371B - Touch display panel and touch display device - Google Patents
Touch display panel and touch display device Download PDFInfo
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- CN112612371B CN112612371B CN202011480058.2A CN202011480058A CN112612371B CN 112612371 B CN112612371 B CN 112612371B CN 202011480058 A CN202011480058 A CN 202011480058A CN 112612371 B CN112612371 B CN 112612371B
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- 238000005452 bending Methods 0.000 claims abstract description 19
- 239000000758 substrate Substances 0.000 claims description 14
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 16
- 238000005530 etching Methods 0.000 description 8
- 230000001965 increasing effect Effects 0.000 description 8
- 230000004888 barrier function Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 230000008054 signal transmission Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 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
- 230000005611 electricity Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (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 aims to increase 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 electrode and the touch signal wire extend from the non-step area, the wiring area and the bending area to the functional area, the part of the touch signal wire positioned in the non-step area is a touch wiring, the touch wiring is positioned on one side of the retaining wall close to the display area, and the part of the touch signal wire positioned in the step area is a touch lead; and the electrostatic shielding signal line is positioned in the non-display area, the part of the electrostatic shielding signal line extending along the second direction in the step area is positioned at one side of the retaining wall away from the display area, and the second direction is the extending direction of the retaining wall in the step area.
Description
[ field of technology ]
The present invention relates to the field of display technologies, and in particular, to a touch display panel and a touch display device.
[ background Art ]
In order to realize the touch function, a touch electrode and a touch signal line connected with the touch electrode are arranged in the touch display panel, and generally, the touch signal line extends to the step area along the left frame and the right frame of the touch display panel. However, as the requirements of users on the design of the panel are continuously improved, the wiring space in the step area is limited due to the requirement of the narrow frame, so that the distance between the touch signal lines extending in the step area is smaller, and the problems of etching residues and the like are easy to occur in the manufacturing process of the touch signal lines, and the touch signal lines are short-circuited.
[ invention ]
In view of this, the embodiment of the invention provides 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 device 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 of a touch display panel, which is opposite to a light emitting surface, through the bending area, and the first direction is the direction that the display area points to the step area;
the substrate is provided with an array layer and a retaining wall, and the retaining wall is arranged around the display area in the non-display area;
the packaging layer is positioned on one side of the array layer and the retaining wall, which is away from the substrate;
the touch control signal line extends from the non-step area, the wiring area and the bending area to the functional area, the part of the touch control signal line, which is positioned in the non-step area, is a touch control wiring, the touch control wiring is positioned at one side, close to the display area, of the retaining wall, and the part of the touch control signal line, which is positioned in the step area, is a touch control lead;
the electrostatic shielding signal line is positioned on one side of the packaging layer, which is opposite to the substrate, and is positioned in the non-display area, and the part, extending along the second direction, of the electrostatic shielding signal line in the step area is positioned 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.
On the other hand, the embodiment of the invention provides a touch display device, which comprises 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 line extending along the second direction in the step area is positioned at 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 at one side of the retaining wall near the display area, and therefore, when the touch lead extends in the area of one side of the retaining wall near the display area, the distance between the part of the lead in the first direction can be increased to a certain extent, the lead is prevented from being too close, in the manufacturing process, the etching difficulty can be reduced, and the risk of short circuit of the touch lead caused by factors such as etching residues is further reduced. 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, so that the transmission quality of touch control signals can be optimized by effectively utilizing the water and oxygen isolation function of the retaining wall and the electrostatic protection and anti-interference function of the electrostatic shielding signal wire. Therefore, the embodiment of the invention can increase the distance between the touch leads under the condition that the width of the frame is limited, improve the reliability of touch signal transmission, and optimize the narrow frame performance and the touch performance of the panel.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed 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 that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view showing the extension of a touch signal line in the prior art;
fig. 2 is a schematic structural diagram of the touch display panel provided by the 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 diagram illustrating another extension mode of an electrostatic shielding signal line according to an embodiment of the present invention;
fig. 6 is a schematic diagram showing another extension mode of an electrostatic shielding signal line according to an embodiment of the present invention;
fig. 7 is a schematic diagram of another extending manner of a touch signal line according to an embodiment of the present invention;
fig. 8 is a schematic diagram of another extending manner of the touch signal line according to an embodiment of the present invention;
fig. 9 is a schematic diagram of another extending manner of the touch signal line according to the embodiment of the present invention;
fig. 10 is a schematic structural view 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 ] of the invention
For a better understanding of the technical solution of the present invention, the following detailed description of the embodiments of the present invention refers to the accompanying drawings.
It should be understood that the described embodiments are merely some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the 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 this application 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 relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are 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 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 extending schematic diagram of a touch signal line in the prior art, and the touch display panel includes a display area 1 'and a non-display area 2' surrounding the display area, wherein the 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 static electricity protection and interference resistance, generally extend on one side of a retaining wall 5' near the display area 1', until crossing the retaining wall 5' in a step area 6 'and being electrically connected with a flip-chip film bound in 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, so that the problem of short circuit of the touch signal lines 6' caused by etching residues and other factors is easy to occur, and the normal transmission of the touch signal is further adversely affected.
Therefore, an embodiment of the present invention provides a touch display panel, as shown in fig. 2 to 4, fig. 2 is a schematic structural diagram of the touch display panel provided in the embodiment of the present invention when not bent, fig. 3 is an enlarged schematic diagram of a step area shown in fig. 2, and fig. 4 is a cross-sectional view of fig. 2 along A1-A2 direction, where the touch display panel includes: the display area 1 and the non-display area 2 arranged outside the display area 1, wherein the non-display area 2 comprises a step area 3 and a non-step area 4, the step area 3 comprises a wiring area 5, a bending area 6 and a functional area 7 which are arranged along a first direction, the first direction is the direction of the display area 1 pointing to the step area 3, the functional area 7 is bound with a flip chip film 8, and the functional area 7 is bent to one side of the touch display panel, which is opposite to the light emitting surface, through the bending area 6.
The touch display panel further comprises a substrate base plate 9, wherein an array layer 10 and a retaining wall 11 are arranged on the substrate base plate 9, and the retaining wall 11 is arranged around the display area 1 in the non-display area 2; the array layer 10 and the retaining wall 11 are provided with a packaging layer 12 on one side facing away from the substrate 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 facing away from the substrate 9; the touch signal line 14 extends from the non-step area 4, the wiring area 5 and the bending area 6 to the functional area 7, and is electrically connected with a touch driving chip on the flip-chip film 8 bound in the functional area 7, a part of the touch signal line 14 located in the non-step area 4 is a touch wiring 15, the touch wiring 15 is located at one side of the retaining wall 11 close to the display area 1, and a 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 area 2, and a portion of the electrostatic shielding signal line 17 extending in the second direction in the step area 3, which is the extending direction of the barrier wall 11 in the step area 3, is located at a side of the barrier wall 11 away from the display area 1.
It should be noted that, the touch electrode 13 may be a mutual capacitive touch electrode as illustrated in fig. 2, and at this time, the touch electrode 13 includes an inductive 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 inductive touch electrode or a touch signal line 14 electrically connected to the driving touch electrode. Alternatively, in other alternative embodiments of the present invention, the touch electrode 13 may be a self-capacitance touch electrode.
In the embodiment of the invention, the portion of the electrostatic shielding signal line 17 extending along the second direction in the step area 3 is located at the side of the retaining wall 11 away from the display area 1, so that the portion of the wiring does not need to occupy space at the side of the retaining wall 11 close to the display area 1, and thus, when the touch lead 16 extends in the area of the retaining wall 11 near the display area 1, the distance d1 between the portion of the lead in the first direction can be increased to a certain extent, the distance between the leads is prevented from being too short, in the manufacturing process, the etching difficulty can be reduced, and the risk of short-circuiting of the touch lead 16 caused by factors such as etching residues is further reduced. In addition, the embodiment of the invention can still enable the touch wire 15 to be positioned at one side of the retaining wall 11 close to the display area 1 without adjusting the position of the touch wire 15 in the non-step area 4, so that the transmission quality of touch signals can be optimized by effectively utilizing the water and oxygen isolation function of the retaining wall 11 and the electrostatic protection and anti-interference function of the electrostatic shielding signal wire 17. Therefore, the embodiment of the invention can increase the distance between the touch leads under the condition that the width of the frame is limited, improve the reliability of touch signal transmission, and optimize the narrow frame performance and the touch performance of the panel.
Note that the number of electrostatic shielding signal lines 17 illustrated in the drawing is merely illustrative. In the current touch display panel, in order to improve the electrostatic protection capability and the anti-interference capability of the panel, a greater number of electrostatic shielding signal lines 17 are generally disposed, and thus, a portion of the electrostatic shielding signal lines 17 extending in the second direction in the step region 3 is disposed on a side of the barrier wall 11 away from the display region 1, so that enough space is made to increase the space between the touch leads 16.
In one embodiment, as shown in fig. 5, fig. 5 is a schematic diagram illustrating another extension manner of the electrostatic shielding signal line provided by the embodiment of the present invention, the electrostatic shielding signal line 17 includes a grounding line 18, the grounding line 18 is used for conducting away electrostatic charges, improving the electrostatic protection capability of the panel, the grounding line 18 and the touch signal line 14 are arranged on the same layer, and the portion of the grounding line 18 extending in the non-step area 4 is located at the side of the retaining wall 11 away from the display area 1.
On the one hand, retaining walls are arranged between the grounding wire 18 and the touch signal wire 14 in the non-step area 4 and the step area 3 at intervals, so that the distance between the grounding wire 18 and the touch signal wire 14 is increased, the influence of static charges transmitted on the grounding wire 18 on touch signals transmitted on the touch signal wire 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-step area 4 and the part extending in the step area 3 are positioned on the same side of the retaining wall 11, and the grounding wire 18 does not need to cross the retaining wall 11 when extending from the non-step area 4 to the step area 3, so that the risk of breakage of the grounding wire 18 at the boundary of the retaining wall 11 is reduced; in yet another aspect, the ground wire 18 is closer to the edge of the panel, where external static charge can be conducted away through the ground wire 18 as it penetrates the panel, reducing the risk of static charge further penetrating toward the interior of the panel.
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 in the same layer, and a portion of the shielding line 19 extending in the non-step area 4 is located on a side of the retaining wall 11 away from the display area 1. At this time, the portion of the shielding line 19 extending in the non-step region 4 and the portion extending in the step region 3 are located on the same side of the retaining wall 11, and the shielding line 19 does not need to cross the retaining wall 11 when extending from the non-step region 4 to the step region 3, so that the risk of breakage of the shielding line 19 at the boundary of the retaining wall 11 is reduced.
Alternatively, as shown in fig. 6, fig. 6 is a schematic diagram illustrating another extension mode of an electrostatic shielding signal line provided by the embodiment of the present invention, where the electrostatic shielding signal line 17 includes a shielding line 19, a portion of the shielding line 19 extending in the non-step area 4 is a first shielding lead 20, and a portion of the shielding line 19 extending in the step area 3 is a second shielding lead 21; the first shielding leads 20 and the touch signal lines 14 are arranged in the same layer, the first shielding leads 20 are positioned between the touch signal lines 14 and/or positioned on one side of the touch signal lines 14 close to the display area 1, and the second shielding leads 21 and the first shielding leads 20 are arranged in different layers.
On the one hand, in the non-step area 4, a spacing retaining wall is not needed between the first shielding lead 20 and the touch signal line 14, and the distance is closer, so that 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 arranged in different layers, so that overlapping contact between the second shielding lead 21 and the touch lead 16 when crossing the touch lead 16 can be avoided, and on the premise of ensuring normal transmission of touch signals, the distance between the touch leads 16 extending on one 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.
In an implementation manner, as shown in fig. 7, fig. 7 is a schematic diagram illustrating another extending manner of a touch signal line provided by the embodiment of the present invention, the touch signal line 14 includes at least one first touch signal line 22, and the first touch signal line 22 is the touch signal line 14 on a side, far from the display area 1, of the touch signal lines 14; in the first touch signal line 22, a portion of the touch lead 16 extending in the second direction in the step area 3 is located at a side of the barrier wall 11 away from the display area 1, thereby further increasing a pitch between the touch leads 16 extending at a side of the barrier 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 transversely along the first direction, it extends vertically along the second direction across the retaining wall 11 until it is electrically connected to the touch driving chip on the flip chip film 8. Based on the design of the step area 3 of the touch display panel, the length of the bending area 6 in the second direction decreases along the first direction, so that the portion of the leads extending vertically need to be closely arranged to match the size design of the bending area 6.
In view of this, in the embodiment of the present invention, as shown in fig. 8, fig. 8 is a schematic view showing another extending manner of the touch signal line provided in the embodiment of the present invention, the trace area 5 includes a first trace area 23 and a second trace area 24, the first trace area 23 is located between the retaining wall 11 and the display area 1, and the second trace area 24 is located between the retaining wall 11 and the bending area 6; at least part of the touch leads 16 comprise a first lead segment 25 extending in a second direction in the first wire area 23, a second lead segment 26 extending from the first wire area 23 to the second wire area 24, a third lead segment 27 extending in the second direction in the second wire area 24, and a fourth lead segment 28 extending from the second wire area 24 to the bending area 6, which are sequentially connected; and, in the adjacent two touch leads 16, the interval between the second lead segments 26 is larger than the interval between the first lead segments 25.
Compared with the extending mode that the touch lead 16 extends transversely along the first direction and then extends vertically to the flip chip film 8, in the embodiment of the invention, the extending mode that the touch lead 16 extends transversely, vertically, transversely and vertically is adopted, so that the distance d2 between the second lead segments 26 in the second direction can be further increased on the basis of increasing the distance d1 between the first lead segments 25 in the first direction, thereby reducing the etching difficulty of the lead segments crossing the retaining wall 11 and reducing the risk of short circuit between the touch leads 16.
Further, as shown in fig. 9, fig. 9 is a schematic diagram of another extending manner of the touch signal line provided by 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, and the touch leads 16 need to be closely arranged at 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 line 14 includes 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 line 14, for the second lead line 26 in the second touch signal line 32 on the same side as the dummy central axis 29, the second lead line 26 is located between the edge of the side close to the dummy central axis 29 in the touch lead extending area 30 and the dummy central axis 29, that is, the first lead line 25 in the second touch signal line 32 extends to the side close to the dummy central axis 29 in the touch lead extending area 30, then the second lead line 26 extends vertically, then the third lead line 27 extends towards the side away from the dummy central axis 29 in the touch lead extending area 30, by this extending manner, the space width occupied by the plurality of touch leads 16 in the second direction is larger, and accordingly, the distance d2 between the adjacent two touch leads 16 in the second direction is also larger, so that the distance between the touch leads 16 is further improved.
It should be noted that, the above-mentioned dummy central axis 29 is merely a virtual central axis introduced for clearly defining the extending manner of the second touch signal line 32, and in the actual product structure, the physical structure of the dummy central axis 29 is not present.
Further, in order to increase the pitch 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 that of the touch signal lines 14.
Moreover, in order to make the arrangement of the touch leads 16 more regular and symmetrical, the two sides of the dummy central axis 29 have the same number of the second touch signal lines 32.
In addition, if a crack is generated in the touch display panel, external water and oxygen may invade the panel along the crack, which affects the service life of the panel, and thus a crack detection signal line is usually provided in the panel. In the embodiment of the present invention, as shown in fig. 10, fig. 10 is a schematic structural diagram of an electrostatic shielding signal line provided in the embodiment of the present invention, 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 a ground line 18 and a shielding line 19, one ends of the ground line 18 and the shielding line 19 may be electrically connected to form a loop, and at this time, the electrostatic shielding signal line 17 is multiplexed into 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 the electrostatic shielding signal line 17 is broken, and if the electrostatic shielding signal line 17 is detected to be broken, this indicates that a crack exists on the substrate 9, and if the electrostatic shielding signal line 17 is detected to be unbroken, this indicates that no crack exists on the substrate 9.
After the electrostatic shielding signal line 17 is multiplexed into the crack detection signal line, no additional crack detection signal line for detecting cracks is required to be arranged in the panel, so that the space occupied by the part of 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 control signal line 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, where the touch display device includes the touch display panel 100. The specific structure of the touch display panel 100 is described in detail in the above embodiments, and will not be repeated here. Of course, the display device shown in fig. 11 is only a schematic illustration, and the display device may be any electronic apparatus having a display function, such as a mobile phone, a tablet computer, a notebook computer, an electronic book, or a television.
Because the touch display device provided by the embodiment of the invention comprises the touch display panel 100, the touch display device can increase the distance between the touch leads 16 extending in the step area 3, further reduce the risk of short circuit of the touch leads 16 caused by factors such as etching residues, effectively improve the reliability of touch signal transmission, and optimize the touch performance.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the invention.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (11)
1. A touch display panel, comprising:
the display device 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 of a touch display panel, which is opposite to a light emitting surface, through the bending area, and the first direction is the direction that the display area points to the step area;
the substrate is provided with an array layer and a retaining wall, and the retaining wall is arranged around the display area in the non-display area;
the packaging layer is positioned on one side of the array layer and the retaining wall, which is away from the substrate;
the touch control signal line extends from the non-step area, the wiring area and the bending area to the functional area, the part of the touch control signal line, which is positioned in the non-step area, is a touch control wiring, the touch control wiring is positioned at one side, close to the display area, of the retaining wall, and the part of the touch control signal line, which is positioned in the step area, is a touch control lead;
the electrostatic shielding signal line is positioned on one side of the packaging layer, which is opposite to the substrate, and is positioned in the non-display area, and the part, extending along the second direction, of the electrostatic shielding signal line in the step area is positioned 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, wherein,
the electrostatic shielding signal line comprises a grounding line, the grounding line and the touch signal line are arranged in the same layer, and the part, extending in the non-step area, of the grounding line is located at one side, far away from the display area, of the retaining wall.
3. The touch display panel of claim 1, wherein,
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 positioned at one side of the retaining wall away from the display area.
4. The touch display panel of claim 1, wherein,
the electrostatic shielding signal line comprises a shielding line, wherein 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 leads and the touch signal lines are arranged on the same layer, the first shielding leads are positioned between the touch signal lines and/or on one side of the touch signal lines, which is close to the display area, and the second shielding leads and the first shielding leads are arranged on different layers.
5. The touch display panel of claim 1, wherein,
the touch signal line comprises at least one first touch signal line, and the first touch signal line is one of the touch signal lines, which is far away from the display area;
in the first touch signal line, a portion of the touch lead extending along the second direction in the step area is located at one side of the retaining wall away from the display area.
6. The touch display panel of claim 1, wherein,
the wiring area comprises a first wiring area and a second wiring area, the first wiring area is positioned between the retaining wall and the display area, and the second wiring area is positioned between the retaining wall and the bending area;
at least part of the touch leads comprise a first lead segment extending along the second direction in the first wiring region, a second lead segment extending from the first wiring region to the second wiring region, a third lead segment extending along the second direction in the second wiring region and a fourth lead segment extending from the second wiring region to the bending region, which are sequentially connected;
and in the adjacent two touch leads, the interval between the second lead sections is larger than the interval between the first lead sections.
7. The touch display panel of claim 6, wherein,
the step area is provided with a dummy 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 at two sides of the dummy central axis;
the non-step area comprises two frame areas, wherein 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, which is close to one side of the display area, and the second lead line of 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, close to the virtual central axis, of the touch lead line extension area and the virtual central axis.
8. The touch display panel of claim 7, wherein,
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, wherein,
the two sides of the dummy 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.
11. A touch display device comprising the touch display panel according to any one of claims 1 to 10.
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| CN114690921A (en) * | 2020-12-25 | 2022-07-01 | 京东方科技集团股份有限公司 | Display panel, display device and method for manufacturing display panel |
| CN114721534A (en) * | 2021-01-04 | 2022-07-08 | 京东方科技集团股份有限公司 | Display substrate and display device |
| CN115668112A (en) * | 2021-04-28 | 2023-01-31 | 京东方科技集团股份有限公司 | Touch display substrate, touch display device and distribution method of touch signal lines |
| CN113284441A (en) * | 2021-05-18 | 2021-08-20 | 京东方科技集团股份有限公司 | Display module, fracture detection method and display device |
| CN113268161A (en) | 2021-05-28 | 2021-08-17 | 京东方科技集团股份有限公司 | Touch sensing layer, display panel and display device |
| CN114356132A (en) * | 2021-12-22 | 2022-04-15 | 维信诺科技股份有限公司 | Display panel and display device |
| CN114385036B (en) * | 2021-12-27 | 2024-02-20 | 武汉天马微电子有限公司 | Display panel and display device |
| US20240295932A1 (en) * | 2022-05-26 | 2024-09-05 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Touch display panel and display device |
| CN117957516A (en) * | 2022-08-29 | 2024-04-30 | 京东方科技集团股份有限公司 | Display panel and display device |
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