CN114115598A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN114115598A CN114115598A CN202111404481.9A CN202111404481A CN114115598A CN 114115598 A CN114115598 A CN 114115598A CN 202111404481 A CN202111404481 A CN 202111404481A CN 114115598 A CN114115598 A CN 114115598A
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- 230000003068 static effect Effects 0.000 claims abstract description 64
- 230000005611 electricity Effects 0.000 claims abstract description 59
- 230000007547 defect Effects 0.000 abstract 1
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- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
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- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04107—Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
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- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Elimination Of Static Electricity (AREA)
Abstract
The embodiment of the invention provides a display panel and a display device. The display panel comprises a display area and a non-display area; the non-display area comprises a plurality of bonding pads, a plurality of signal lines and at least one virtual electrode; one end of the signal line is connected to the pad; the signal line includes an electrostatic discharge line; in the direction perpendicular to the plane of the display panel, the dummy electrode and the electrostatic discharge line are partially overlapped; an insulating layer is interposed between the dummy electrode and the electrostatic discharge line. A quasi-bridging structure is formed at the overlapping position of the virtual electrode and the electrostatic discharge line, and when the electrostatic test is carried out on the display panel, static electricity can be discharged at the quasi-bridging structure of the non-display area, so that the condition that the static electricity enters the display area to cause in-plane defects is avoided. The invention can improve the antistatic capability of the display panel.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a display device.
Background
With the development of science and technology, touch technology has also been developed from simple single-point touch to current multi-point touch, and is widely applied to current smart devices. Due to the application of the touch technology, the front face of the display panel in the intelligent equipment does not need to be provided with an entity control key, the space is released, the screen occupation ratio of the display panel is increased, and the interaction experience of a user during operation is improved. In some panels with touch function, functional bridges exist between touch electrodes in a display area, and when static electricity enters into a plane, the static electricity is easily released at the bridging positions to damage metals at the bridging positions, so that touch failure is caused when the static electricity seriously enters into the plane.
Disclosure of Invention
The embodiment of the invention provides a display panel and a display device, and aims to solve the problem of touch failure caused by the release of static electricity at an in-plane bridging position in the prior art.
In a first aspect, an embodiment of the present invention provides a display panel, where the display panel includes a display area and a non-display area;
the non-display area comprises a plurality of bonding pads, a plurality of signal lines and at least one virtual electrode; one end of the signal line is connected to the pad; the signal line includes an electrostatic discharge line;
in the direction perpendicular to the plane of the display panel, the dummy electrode and the electrostatic discharge line are partially overlapped; an insulating layer is interposed between the dummy electrode and the electrostatic discharge line.
In a second aspect, an embodiment of the present invention further provides a display device, including the display panel provided in any embodiment of the present invention.
The display panel and the display device provided by the embodiment of the invention have the following beneficial effects: and a virtual electrode and an electrostatic discharge line are arranged in the non-display area, and the virtual electrode and the electrostatic discharge line are at least partially overlapped to form a bridge-like frame. When static electricity is transmitted to the signal wire through the bonding pad and is transmitted to the display panel surface, the static electricity can break down the insulating layer between the virtual electrode and the static electricity releasing wire at the overlapping position, so that the static electricity is released, namely the static electricity is released at the bridging position in the non-display area, the static electricity is released in advance, the transmission of the static electricity to the display area is blocked, and the in-plane damage caused by the release of the static electricity at the bridging structure in the display area is avoided. According to the embodiment of the invention, the antistatic capability of the display panel can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without inventive labor.
FIG. 1 is a schematic diagram of a display panel in the related art;
FIG. 2 is an enlarged view of the area Q of FIG. 1;
fig. 3 is a schematic view of a display panel according to an embodiment of the invention;
FIG. 4 is an enlarged schematic view of the area Q1 in FIG. 3;
FIG. 5 is a schematic cross-sectional view taken along line A-A' of FIG. 4;
FIG. 6 is a schematic diagram of another display panel according to an embodiment of the present invention;
FIG. 7 is a schematic view of another display panel according to an embodiment of the present invention;
FIG. 8 is a partial schematic view of another display panel according to an embodiment of the invention;
FIG. 9 is a schematic cross-sectional view taken at the location B-B' of FIG. 8;
FIG. 10 is a schematic diagram of a portion of another display panel according to an embodiment of the invention;
FIG. 11 is a schematic diagram of a portion of another display panel according to an embodiment of the invention;
FIG. 12 is a schematic diagram of a portion of another display panel according to an embodiment of the invention;
FIG. 13 is a schematic cross-sectional view taken along line C-C' of FIG. 12;
FIG. 14 is a partial schematic view of another display panel according to an embodiment of the invention;
fig. 15 is a schematic view of a display device according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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.
Fig. 1 is a schematic view of a display panel in the related art, and fig. 2 is an enlarged view of a region Q in fig. 1. As shown in fig. 1, the display panel includes first electrode blocks 01 and second electrode blocks 02, wherein a plurality of the first electrode blocks 01 are sequentially connected in a first direction x to form a first touch electrode 010, and a plurality of the second electrode blocks 02 are sequentially connected in a second direction y to form a second touch electrode 020. As shown in fig. 2, two adjacent first electrode blocks 01 are connected by a first connecting portion 03, and two adjacent second electrode blocks 02 are connected by a second connecting portion 04, wherein the first connecting portion 03 and the first electrode blocks 01 are located in the same layer, the second connecting portion 04 and the second electrode blocks 02 are located in different layers, the second connecting portion 04 and the first connecting portion 03 are located in different layers, and the second connecting portion 04 spans the first connecting portion 03 to form a bridging structure. When static electricity enters the inside of the display panel, an insulating layer between the first connection portion 03 and the second connection portion 04 is easily broken by discharge at a position where the two overlap, resulting in a touch failure.
Based on the problems in the prior art, embodiments of the present invention provide a display panel, in which a quasi-bridging structure is disposed in a non-display area of the display panel, so that static electricity is released at a quasi-bridging position, transmission of the static electricity to the display area is blocked, and in-plane damage caused by the release of the static electricity at the quasi-bridging structure in the display area is avoided, thereby improving the antistatic capability of the display panel.
Fig. 3 is a schematic view of a display panel according to an embodiment of the invention, fig. 4 is an enlarged schematic view of a region Q1 in fig. 3, and fig. 5 is a schematic cross-sectional view of a tangent line a-a' in fig. 4.
As shown in fig. 3, the display panel includes a display area AA and a non-display area BA; the non-display area BA includes a plurality of pads 10, a plurality of signal lines 20, and at least one dummy electrode (not shown in fig. 3); one end of the signal line 20 is connected to the pad 10; the signal line 20 includes an electrostatic discharge line 21.
The display panel includes a first touch electrode 30 extending in a first direction x and a second touch electrode 40 extending in a second direction y. The first touch electrode 30 includes a plurality of first electrode blocks 31, and two adjacent first electrode blocks 31 in the first touch electrode 30 are connected by a first connection portion; the second touch electrode 40 includes a plurality of second electrode blocks 41, and two adjacent second electrode blocks 41 in the second touch electrode 40 are connected by a second connection portion. The first connecting portion and the second connecting portion cross each other, and the second connecting portion crosses the first connecting portion to form a bridging structure similar to the bridging structure illustrated in fig. 2, wherein the bridging structure is located in the display area AA.
In one embodiment, one of the first touch electrode 30 and the second touch electrode 40 is a touch driving electrode, and the other is a touch sensing electrode, and the display panel can implement mutual capacitance touch detection.
The signal line 20 further includes a touch signal line 22, and the touch signal line 22 includes a first touch signal line 22a and a second touch signal line 22 b; one end of the first touch signal line 22a is connected to the pad 10, and the other end is connected to the first touch electrode 30; one end of the second touch signal line 22b is connected to the pad 10, and the other end is connected to the second touch electrode 40.
In some embodiments, the pad 10 is connected to the flexible circuit board in a bonding manner, and the pad 10 is connected to the touch driving chip through a trace on the flexible circuit board. The touch driving chip is used for driving the touch function of the display panel.
As can be seen from fig. 4 and 5, in the direction e perpendicular to the plane of the display panel, the dummy electrode 50 and the electrostatic discharge line 21 partially overlap; an insulating layer 60 is interposed between the dummy electrode 50 and the electrostatic discharge line 21. A bridge-like structure is formed at a position where the dummy electrode 50 and the electrostatic discharge line 21 overlap each other.
The display panel provided by the embodiment of the invention is provided with the virtual electrode 50 and the electrostatic discharge line 21 in the non-display area, and the virtual electrode 50 and the electrostatic discharge line 21 are at least partially overlapped to form a bridge-like bridge. When static electricity is transmitted to the signal line 20 through the pad 10 and transmitted to the display panel surface, the static electricity can break through the insulating layer between the virtual electrode 50 and the static electricity releasing line 21 at the overlapping position, so that the static electricity is released, namely the static electricity is released at the bridging position in the non-display area, the static electricity is released in advance, the transmission of the static electricity to the display area is blocked, and the in-plane damage caused by the release of the static electricity at the bridging structure in the display area is avoided. According to the embodiment of the invention, the antistatic capability of the display panel can be improved.
In some embodiments, the dummy electrode 50 is positioned between the display area AA and the plurality of pads 10. That is, the bridge-like structure is located in the non-display area BA and on a side of the display area AA close to the bonding pad 10. In general, static electricity is transmitted to the signal line 20 connected to the pad 10 through the pad 10, and then transmitted into the display area AA through the signal line 20. In the embodiment of the present invention, the dummy electrode 50 is disposed at a position close to the pad 10, so that static electricity drawn from the pad 10 can be released as soon as possible, and the static electricity is blocked from being continuously transmitted to the display area AA. In addition, the space between the display area AA and the pad 10 is relatively large, and there can be more space for disposing the electrostatic discharge line 21 and the dummy electrode 50. Meanwhile, the electrostatic discharge line 21 can be structurally deformed (for example, the electrostatic discharge line 21 is designed to be relatively wide locally), so that the electrostatic discharge sites are increased, and the antistatic capability of the display panel is further improved.
In some embodiments, the electrostatic discharge line 21 is located between two adjacent touch signal lines 22. Static electricity on the static electricity discharging line 21 transmitted through the pad 10 can be discharged at the overlapping position of the static electricity discharging line 21 and the dummy electrode 50, and the static electricity is prevented from being transmitted to the touch electrode through the touch signal line 22 and then discharged at the bridging structure in the display area AA to cause in-plane damage to the display panel.
In some embodiments, the electrostatic discharge line 21 is located between two adjacent first touch signal lines 22 a. In other embodiments, the electrostatic discharge line 21 is located between two adjacent second touch signal lines 22 b. Which are not illustrated in the drawings.
In some embodiments, as shown in fig. 4, the electrostatic discharge line 21 is located between the first touch signal line 22a and the second touch signal line 22 b. Static electricity can be discharged at the overlapping position of the static electricity discharge line 21 and the virtual electrode 50, so that the transmission of the static electricity to the display area is blocked, and the in-plane damage caused by the discharge of the static electricity at the bridging structure in the display area is avoided. Meanwhile, when a fixed potential is connected to the electrostatic discharge line 21, the electrostatic discharge line 21 can also prevent coupling crosstalk between the first touch signal line 22a and the second touch signal line 22b, thereby improving the reliability of the touch performance.
In other embodiments, fig. 6 is a schematic view of another display panel according to an embodiment of the present invention, and as shown in fig. 6, the signal line 20 further includes a first static electricity protection line 23, and one end of the first static electricity protection line 23 is connected to the pad 10. The first static electricity protection line 23 at least partially surrounds the display area AA, and the first static electricity protection line 23 is located at the periphery of the touch signal line 22; the electrostatic discharge line 21 is located between the first electrostatic protection line 23 and the touch signal line 22. The first electrostatic protection line 23 is used for performing an electrostatic protection function at the periphery of the touch signal line 22, and in one embodiment, the first electrostatic protection line 23 is connected to GND. The positions of Q2 and Q3 circled in fig. 6 are positions of virtual electrodes (not labeled in fig. 6), and the embodiment arranges the electrostatic discharge line 21 at the periphery of the touch signal line 22, so that static electricity can be discharged at the overlapping position of the electrostatic discharge line 21 and the virtual electrodes, and the static electricity is prevented from being discharged at the position of a bridging structure in the display panel to cause in-plane damage.
Fig. 6 also shows a second electrostatic protection line 24, where the second electrostatic protection line 24 is located between the first touch signal line 22a and the second touch signal line 22b, and the second electrostatic protection line 24 can avoid coupling crosstalk between the first touch signal line 22a and the second touch signal line 22b, so as to improve touch performance reliability.
Fig. 6 illustrates that a quasi-bridging structure is arranged at multiple positions of one electrostatic discharge line 21, that is, virtual electrodes are arranged at multiple positions to overlap with the electrostatic discharge line 21, so as to increase electrostatic discharge sites, further improve the antistatic capability of the display panel, and ensure the reliability of the touch performance.
In some embodiments, the electrostatic discharge line 21 is located between the first touch signal line 22a and the second touch signal line 22b, and a second electrostatic protection line 24 is further disposed between the first touch signal line 22a and the second touch signal line 22 b. Which are not illustrated in the drawings.
In some embodiments, the electrostatic discharge line 21 is multiplexed into one touch signal line. Fig. 7 is a schematic view of another display panel according to an embodiment of the invention, and as shown in fig. 7, the electrostatic discharge line 21 is reused as a second touch signal line 22 b. The second touch signal line 22b is a touch driving signal line or a touch sensing signal line. In other words, a dummy electrode (not shown in fig. 7) is disposed to partially overlap the second touch signal line 22b, and the second touch signal line 22b is multiplexed as the electrostatic discharge line 21. The position of the region Q4 in fig. 7 is a bridge-like position provided on the electrostatic discharge line 21. The dummy electrode overlaps the second touch signal line 22b at the position of the region Q4. In this embodiment, the second touch signal line 22b can provide a touch driving signal to the second touch electrode 40 or receive a touch signal sensed by the second touch electrode 40. Meanwhile, static electricity can be discharged at the position where the virtual electrode and the second touch signal line 22b are overlapped, static electricity is prevented from being transmitted into the plane through the second touch signal line 22b, and the situation that static electricity is discharged at the position of a bridging structure in the plane of the display panel to cause in-plane damage is avoided.
In addition, when the dummy electrode 50 is disposed on the touch signal line 22 and overlaps therewith, when static electricity is discharged at the overlapping position of the touch signal line 22 and the dummy electrode 50, the static electricity may break through the insulating layer therebetween, so that the touch signal line 22 and the dummy electrode 50 are electrically connected. That is, the quasi-bridging structure is disposed on the touch signal line 22, and when static electricity is released at the quasi-bridging structure, the performance of the touch signal line 22 for transmitting signals is not affected.
In some embodiments, the material of which the dummy electrode 50 is made includes a metal oxide, such as indium tin oxide.
In some embodiments, the resistance of the electrostatic discharge line 21 is the smallest among the plurality of signal lines 20. Because the resistance of the electrostatic discharge line 21 is the smallest, the electrostatic discharge line 21 in the plurality of signal lines 20 is most easily used as a path for electrostatic transmission, and the dummy electrode 50 and the electrostatic discharge line 21 are partially overlapped to form a bridge-like structure, so that the electrostatic is more easily released at the overlapped position of the electrostatic discharge line 21 and the dummy electrode 50, and the electrostatic transmission to the surface is effectively avoided.
In one embodiment, the electrostatic discharge line 21 with the lowest resistance in the signal lines 20 is multiplexed as a touch signal line 22.
In another embodiment, the electrostatic discharge line 21 having the smallest resistance among the signal lines 20 is multiplexed as the second electrostatic protection line 24.
In another embodiment, a line with the smallest resistance is added between two touch signal lines 22 as the electrostatic discharge line 21.
In some embodiments, among the plurality of signal lines 20, the length of the electrostatic discharge line 21 is the shortest. When the plurality of signal lines 20 are made of the same material, the resistance of the electrostatic discharge line 21 is the minimum, and static electricity is more easily transmitted on the electrostatic discharge line 21, so that the virtual electrode 50 and the electrostatic discharge line 21 are partially overlapped to form a similar bridging structure, static electricity is released at the similar bridging structure, and static electricity is prevented from being transmitted into the surface.
In one embodiment, the dummy electrode 50 is disposed on the touch signal line 22 having the shortest length to partially overlap with the touch signal line 22, and the touch signal line 22 is multiplexed as the electrostatic discharge line 21.
In another embodiment, the length of the second electrostatic protection line 24 is set to be smaller than the length of the touch signal line 22, the dummy electrode 50 is disposed on the second electrostatic protection line 24 to partially overlap with the second electrostatic protection line 24, and the second electrostatic protection line 24 is multiplexed as the electrostatic discharge line 21.
In another embodiment, a trace with a length smaller than that of the touch signal line is added between the two touch signal lines 22 as the electrostatic discharge line 21.
In some embodiments, in a case where the minimum resistance of the electrostatic discharge line 21 among the plurality of signal lines 20 is satisfied, the line width of the electrostatic discharge line 21 is increased so as to pattern the structure of the electrostatic discharge line 21 in this portion.
Fig. 8 is a partial schematic view of another display panel according to an embodiment of the invention, and fig. 8 illustrates a bridge structure. As shown in fig. 8, the electrostatic discharge line 21 includes an electrostatic discharge portion 21-1 and a non-electrostatic discharge portion 21-2, wherein a portion of the electrostatic discharge line 21 overlapping the dummy electrode 50 is the electrostatic discharge portion 21-1, and the remaining portion of the electrostatic discharge line 21 is the non-electrostatic discharge portion 21-2, and the line width d of the non-electrostatic discharge portion 21-2 is the largest among the plurality of signal lines 20. The line width of the non-electrostatic discharge portion 21-2 is the width of the electrostatic discharge line perpendicular to the extending direction.
In the non-display area BA, the electrostatic discharge line 21 may be provided as a polygonal line including a plurality of line segments, and the electrostatic discharge line 21 of each partial line segment has its own routing direction. As shown in the trace direction z of a part of the electrostatic discharge line 21 illustrated in fig. 8, in the trace direction z, the electrostatic discharge portion 21-1 is located between two adjacent non-electrostatic discharge portions 21-2. Fig. 8 illustrates that the electrostatic discharge portion 21-1 includes two electrostatic discharge sub-lines 06, and a first end (not shown in fig. 8) of the electrostatic discharge sub-lines 06 is connected to one non-electrostatic discharge portion 21-2, and a second end (not shown in fig. 8) is connected to the other non-electrostatic discharge portion 21-2.
Fig. 9 is a schematic cross-sectional view at the position B-B' in fig. 8. As shown in fig. 9, the electrostatic discharge line 21 is formed by an etching process, and an edge slope is formed at an etched edge of the electrostatic discharge line 21, as shown in a region Q5 in fig. 9, where the electrostatic discharge line 06 has a smaller thickness closer to the edge, and static electricity is likely to be concentrated at the edge slope position. The edge slope of the electrostatic discharge sub-line 06 overlaps the dummy electrode 50, and static electricity is easily discharged at this position.
In the embodiment of the invention, the dummy electrode 50 is overlapped with the electrostatic discharge part 21-1, and the electrostatic discharge part 21-1 comprises at least two electrostatic discharge sub-lines 06, so that the total length of the edge slope in the electrostatic discharge part 21-1 can be increased, the electrostatic discharge sites on the electrostatic discharge sub-lines 21 can be increased, and the electrostatic discharge capacity at the position of the bridging-like structure can be improved.
In another embodiment, fig. 10 is a partial schematic view of another display panel according to an embodiment of the present invention, and fig. 10 illustrates another structure of the electrostatic discharge portion 21-1. As shown in fig. 10, the electrostatic discharge portion includes two electrostatic discharge sub-lines 06, adjacent electrostatic discharge sub-lines 06 are electrically connected to each other, and a position where the two electrostatic discharge sub-lines 06 are connected to each other is located between a first end and a second end of the electrostatic discharge sub-line 06 as can be seen from a region Q6 in fig. 10. That is, at the non-first and second end positions of the electrostatic discharge sub-lines 06, the adjacent two electrostatic discharge sub-lines 06 are connected to each other. This arrangement can reduce the resistance of the electrostatic discharge portion 21-1, and accordingly, the electrostatic discharge line 21, so that static electricity is more easily transmitted on the electrostatic discharge line 21 and discharged at a position where the electrostatic discharge portion 21-1 and the dummy electrode 50 overlap each other.
In another embodiment, fig. 11 is a partial schematic view of another display panel according to an embodiment of the present invention, and fig. 11 illustrates another structure of the electrostatic discharge portion 21-1. As shown in fig. 11, the electrostatic discharge portion 21-1 includes four electrostatic discharge sub-lines 06, and the illustrated positions of the region Q7 and the region Q8 are positions where two electrostatic discharge sub-lines 06 are connected to each other.
In the embodiment of the present invention, the electrostatic discharge portion 21-1 may be a patterned structure, the electrostatic discharge portion 21-1 includes at least two electrostatic discharge sub-lines 06, the electrostatic discharge portion 21-1 may have other modifications besides the structures shown in fig. 8, 10, and 11, and the electrostatic discharge portion 21-1 is not limited to a straight line and may have other shapes such as a broken line, a wavy line, and a mesh line. Are not listed here.
In another embodiment, fig. 12 is a partial schematic view of another display panel provided in an embodiment of the invention, and fig. 13 is a schematic cross-sectional view at a position of a tangent line C-C' in fig. 12. As shown in fig. 12, the routing direction of the electrostatic discharge line 21 is z, the electrostatic discharge line 21 includes two first edges 21B extending in the routing direction z, and the dummy electrode 50 overlaps at least one of the first edges 21B. As shown in fig. 13, the first edge 21B of the electrostatic discharge line 21 has a slope structure, and static electricity is easily concentrated at the slope position, and by arranging the dummy electrode 50 to overlap the first edge 21B according to the embodiment of the present invention, static electricity can be discharged at the overlapping position of the dummy electrode 50 and the first edge 21B, so as to prevent the static electricity from being transmitted into the display area AA.
In fig. 13, it is illustrated that the dummy electrode 50 overlaps one of the two first edges 21B. In some embodiments, the virtual electrode 50 can overlap both the two first edges 21B by changing the shape of the virtual electrode 50, and is not illustrated in the drawings.
In some embodiments, the dummy electrode 50 is in a floating state.
In some embodiments, the dummy electrode 50 is connected to one signal line.
In an embodiment, fig. 14 is a partial schematic view of another display panel according to an embodiment of the invention, as shown in fig. 14, a dummy electrode 50 is partially overlapped with an electrostatic discharge line 21, the electrostatic discharge line 21 is adjacent to a second electrostatic protection line 24, the second electrostatic protection line is located between a first touch signal line and a second touch signal line, and the dummy electrode 50 is electrically connected to the second electrostatic protection line 24 through a via (not shown in fig. 14).
In one embodiment, the electrostatic discharge line 21 is multiplexed as one touch signal line 22, and the dummy electrode 50 overlapping the electrostatic discharge line 21 is connected to the second electrostatic protection line 24.
In another embodiment, the dummy electrode 50 is electrically connected to one touch signal line 22. The touch signal line 22 may be a first touch signal line or a second touch signal line. Which are not illustrated in the drawings. In one embodiment, the electrostatic discharge line 21 is multiplexed into a first touch signal line, and the dummy electrode 50 overlapping the electrostatic discharge line 21 is connected to a second touch signal line. In another embodiment, the electrostatic discharge line 21 is multiplexed into one second touch signal line, and the dummy electrode 50 overlapping with the electrostatic discharge line 21 is connected to one first touch signal line.
Fig. 15 is a schematic view of a display device according to an embodiment of the present invention, and as shown in fig. 15, the display device includes a display panel 100 according to any embodiment of the present invention. The structure of the display panel has been described in the above embodiments, and is not described herein again. The display device in the embodiment of the invention can be any equipment with a display function, such as a mobile phone, a tablet computer, a notebook computer, an electronic book, a television, an intelligent watch and the like.
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 (15)
1. A display panel, comprising a display region and a non-display region;
the non-display area comprises a plurality of bonding pads, a plurality of signal lines and at least one virtual electrode; one end of the signal line is connected to the pad; the signal line includes the electrostatic discharge line;
in the direction perpendicular to the plane of the display panel, the virtual electrode and the electrostatic discharge line are partially overlapped; an insulating layer is interposed between the dummy electrode and the electrostatic discharge line.
2. The display panel according to claim 1,
the display panel comprises a first touch electrode and a second touch electrode; the signal lines comprise touch signal lines, and the touch signal lines comprise a first touch signal line and a second touch signal line;
one end of the first touch signal line is connected with the bonding pad, and the other end of the first touch signal line is connected with the first touch electrode; one end of the second touch signal line is connected with the bonding pad, and the other end of the second touch signal line is connected with the second touch electrode.
3. The display panel according to claim 2,
the electrostatic discharge line is positioned between two adjacent touch signal lines.
4. The display panel according to claim 3,
the electrostatic discharge line is located between the first touch signal line and the second touch signal line.
5. The display panel according to claim 2,
the signal line further comprises a first static protection line, the first static protection line at least semi-surrounds the display area, and the first static protection line is located on the periphery of the touch signal line;
the electrostatic discharge line is located between the first electrostatic protection line and the touch signal line.
6. The display panel according to claim 2,
the electrostatic discharge line is multiplexed into one touch signal line.
7. The display panel according to claim 2,
in the plurality of signal lines, the electrostatic discharge line has the smallest resistance.
8. The display panel according to claim 7,
among the plurality of signal lines, the electrostatic discharge line is shortest in length.
9. The display panel according to claim 7,
the part of the electrostatic discharge line, which is overlapped with the virtual electrode, is an electrostatic discharge part, and the rest part of the electrostatic discharge line is a non-electrostatic discharge part,
in the plurality of signal lines, a line width of the non-electrostatic discharge portion is largest.
10. The display panel according to claim 1,
the dummy electrode is located between the display area and the plurality of pads.
11. The display panel according to claim 2,
the signal line further comprises a second static protection line, and the second static protection line is positioned between the first touch signal line and the second touch signal line;
the virtual electrode is electrically connected with the second static electricity protection line, or the virtual electrode is electrically connected with one touch signal line.
12. The display panel according to claim 1,
the part of the electrostatic discharge line, which is overlapped with the virtual electrode, is an electrostatic discharge part, and the rest part of the electrostatic discharge line is a non-electrostatic discharge part; in the routing direction of the electrostatic discharge line, the electrostatic discharge part is positioned between two adjacent non-electrostatic discharge parts;
the electrostatic discharge part comprises at least two electrostatic discharge sub-lines; in the routing direction of the electrostatic discharge line, the electrostatic discharge sub-line comprises a first end and a second end, wherein the first end is connected to one non-electrostatic discharge part, and the second end is connected to the other non-electrostatic discharge part.
13. The display panel according to claim 12,
in the electrostatic discharge portion, the adjacent electrostatic discharge sub-lines are electrically connected to each other, and a connection position is located between the first end and the second end.
14. The display panel according to claim 1,
the electrostatic discharge line comprises a first edge extending in the routing direction of the electrostatic discharge line, and the virtual electrode is overlapped with at least one first edge.
15. A display device characterized by comprising the display panel according to any one of claims 1 to 14.
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