CN114115607A - Touch display panel and touch display device - Google Patents
Touch display panel and touch display device Download PDFInfo
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- CN114115607A CN114115607A CN202111457151.6A CN202111457151A CN114115607A CN 114115607 A CN114115607 A CN 114115607A CN 202111457151 A CN202111457151 A CN 202111457151A CN 114115607 A CN114115607 A CN 114115607A
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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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- Position Input By Displaying (AREA)
Abstract
The invention provides a touch display panel and a display device, relates to the technical field of touch display, and aims to improve the electrical reliability of the touch display panel. The first touch electrode unit comprises first touch electrodes and first connecting parts which are alternately arranged along a first direction; the first connecting part and the first touch electrode are arranged on the same layer; the second touch electrode unit comprises second touch electrodes and second connecting parts which are alternately arranged along a second direction; the second connecting part and the second touch electrode are arranged in different layers; the orthographic projection of the first connecting part on the plane where the display panel is located is a first projection, the orthographic projection of the second connecting part on the plane where the display panel is located is a second projection, and the first projection and the second projection are at least partially overlapped; the second connecting parts comprise first sub-connecting parts and at least two second sub-connecting parts, the at least two second sub-connecting parts are connected with the two adjacent second touch electrodes, and the first sub-connecting parts are connected with the at least two second sub-connecting parts.
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 recent years, with the rapid development of digital information and wireless mobile communication technologies, in order to achieve the purposes of portability and light weight, the input mode of many electronic products, such as mobile phones, etc., has been changed from the input mode using a conventional keyboard or mouse, etc., to the input mode using a touch screen as an input device.
In order to integrate a touch function on a display panel, a touch electrode needs to be added to the display panel. How to ensure the electrical reliability of the touch electrode and ensure that the display panel has good touch performance becomes a research focus of related researchers.
[ summary of the invention ]
In view of this, embodiments of the present invention provide a touch display panel and a touch display device, so as to improve electrical reliability of the touch display panel.
In one aspect, an embodiment of the present invention provides a touch display panel, including:
the touch control device comprises a plurality of first touch control electrode units, a plurality of second touch control electrode units and a plurality of second connecting parts, wherein the first touch control electrode units comprise first touch control electrodes and first connecting parts which are alternately arranged along a first direction; the first connecting part is connected with two adjacent first touch electrodes; the plurality of first touch electrode units are arranged along a second direction; the first connecting part and the first touch electrode are arranged on the same layer;
a plurality of second touch electrode units including second touch electrodes and second connection parts alternately arranged along the second direction; the second connecting part is connected with two adjacent second touch electrodes; the second touch electrode units are arranged along the first direction; the second connecting part and the second touch electrode are arranged in different layers; the orthographic projection of the first connecting part on the plane where the display panel is located is a first projection, the orthographic projection of the second connecting part on the plane where the display panel is located is a second projection, and the first projection and the second projection are at least partially overlapped;
the second connecting parts comprise first sub-connecting parts and at least two second sub-connecting parts, the at least two second sub-connecting parts are connected with the two adjacent second touch electrodes, and the first sub-connecting parts are connected with the at least two second sub-connecting parts.
In another aspect, an embodiment of the invention provides a touch display device, which includes the touch display panel.
According to the touch display panel and the touch display device provided by the embodiment of the invention, the second connecting parts are arranged to comprise the first sub-connecting parts and the at least two second sub-connecting parts, wherein the first sub-connecting parts are connected with the at least two second sub-connecting parts, so that when the touch display panel works, the conducting paths of touch signals between two adjacent second touch electrodes can be increased. Even if some paths are abnormal due to the problems of electrostatic damage and the like, the touch signals can still be conducted through other conducting paths, and the reliability of the touch display panel is greatly improved.
[ 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 a schematic view of a touch display panel according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of region A1 of FIG. 1;
FIG. 3 is a schematic cross-sectional view along BB' of FIG. 2;
FIG. 4 is a schematic cross-sectional view taken along line CC' of FIG. 2;
FIG. 5 is an enlarged schematic view of a partial area of a touch display panel in the related art;
fig. 6 is an enlarged schematic view of a partial area of another first touch electrode unit according to an embodiment of the disclosure;
FIG. 7 is another enlarged schematic view of region A1 of FIG. 1;
FIG. 8 is a schematic cross-sectional view along DD' of FIG. 7;
fig. 9 is an enlarged schematic view of a partial area of another first touch electrode unit according to an embodiment of the disclosure;
FIG. 10 is a further enlarged schematic view of region A1 of FIG. 1;
fig. 11 is a schematic view 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, etc. may be used to describe the touch electrode units in the embodiments of the present invention, the touch electrode units should not be limited by these terms. These terms are only used to distinguish the touch electrode units having different extending directions from each other. For example, the first touch electrode unit may also be referred to as a second touch electrode unit, and similarly, the second touch electrode unit may also be referred to as a first touch electrode unit without departing from the scope of the embodiments of the present invention.
An embodiment of the invention provides a touch display panel, as shown in fig. 1 and fig. 2, fig. 1 is a schematic view of a touch display panel provided in an embodiment of the invention, and fig. 2 is an enlarged schematic view of an area a1 in fig. 1, where the touch display panel includes a plurality of first touch electrode units 1 and a plurality of second touch electrode units 2. The first touch electrode unit 1 includes first touch electrodes 11 and first connection portions 12 alternately arranged along the first direction h 1; the first connecting portion 12 is connected to two adjacent first touch electrodes 11; the plurality of first touch electrode units 1 are arranged along the second direction h 2. The second touch electrode unit 2 includes second touch electrodes 21 and second connection parts 22 alternately arranged in the second direction h 2; the second connecting part 22 is connected with two adjacent second touch electrodes 21; the plurality of second touch electrode units 2 are arranged along the first direction h 1.
In the embodiment of the invention, the first connection portion 12 and the first touch electrode 11 are disposed on the same layer. The second connecting portion 22 and the second touch electrode 21 are disposed in different layers. As shown in fig. 3, fig. 3 is a schematic cross-sectional view along BB' of fig. 2, the first connection portion 12 and the second connection portion 22 are crossed in an insulating manner, i.e., in the embodiment of the present invention, the first connection portion 12 and the second connection portion 22 are formed on different film layers. As shown in fig. 2, an orthogonal projection of the first connecting portion 12 on the plane of the display panel is a first projection, an orthogonal projection of the second connecting portion 22 on the plane of the display panel is a second projection, and the first projection and the second projection at least partially overlap.
As shown in fig. 2, the second connection portion 22 includes a first sub-connection portion 221 and at least two second sub-connection portions 222, the at least two second sub-connection portions 222 are connected to two adjacent second touch electrodes 21, and the first sub-connection portion 221 is connected to the at least two second sub-connection portions 222. Fig. 2 is a schematic diagram illustrating the connection between the first sub-connection portion 221 and the two second sub-connection portions 222. Illustratively, as shown in fig. 2, the first sub-connection portion 221 and the second sub-connection portion 222 extend in different directions and are cross-connected to each other.
Optionally, the first sub-connecting portion 221 is disposed in a different layer from the second touch electrode 21, and the second sub-connecting portion 222 is disposed in a different layer from the second touch electrode 21.
For example, as shown in fig. 4, fig. 4 is a schematic cross-sectional view along CC' of fig. 2, and in the embodiment of the present invention, the first sub-connecting portion 221 and the second sub-connecting portion 222 may be disposed in the same layer to simplify the manufacturing process of the touch display panel.
As shown in fig. 3, the touch display panel further includes a substrate 100, an array layer 200, a display layer 300, and a touch layer 400. The array layer 200 is located on one side of the substrate 100, the display layer 300 is located on one side of the array layer 200 away from the substrate 100, and the touch layer 400 is located on one side of the display layer 300 away from the substrate 100.
The array layer 200 includes pixel driving circuits. The display layer 300 includes light emitting cells. The light emitting unit is electrically connected to the pixel driving circuit. The pixel driving circuit includes a plurality of thin film transistors T, and only one thin film transistor connected to the light emitting unit is illustrated in fig. 3. The light emitting unit includes a first electrode 81, a light emitting layer 80, and a second electrode 82, which are stacked. Optionally, the Light Emitting unit may include any one of an Organic Light Emitting Diode (OLED), a Quantum dot Light Emitting Diode (QLED), and a Micro Light Emitting Diode (Micro-LED).
Optionally, taking the example illustrated in fig. 3 as an example, the touch layer 400 includes a first touch conductive layer 401 and a second touch conductive layer 402, and a touch insulating layer 403 is further disposed between the first touch conductive layer 401 and the second touch conductive layer 402. For example, the first touch electrode 11, the second touch electrode 21 and the first connection portion 12 may be located on the second touch conductive layer 402, and the second sub-connection portion 222 is located on the first touch conductive layer 401. One end of the second sub-connecting portion 222 is electrically connected to one second touch electrode 21 through the via hole H on the touch insulating layer 403, and two adjacent second touch electrodes 21 are connected through the second sub-connecting portion 222.
It should be noted that the first touch conductive layer 401 shown in fig. 3 is located on the side of the second touch conductive layer 402 away from the substrate 100 for illustration only. In some alternative embodiments, the first touch conductive layer 401 may also be located on a side of the second touch conductive layer 402 close to the substrate 100, and is not illustrated in the drawings.
For example, when the touch display panel is in operation, the first touch electrode unit 1 may be used as a touch sensing electrode, and the second touch electrode unit 2 may be used as a touch driving electrode; or, the first touch electrode unit 1 is used as a touch driving electrode, and the second touch electrode unit 2 is used as a touch sensing electrode, which is not limited in the embodiment of the present invention. Taking the first touch electrode unit 1 as a touch sensing electrode and the second touch electrode unit 2 as a touch driving electrode as an example, when the touch display panel works, the touch driving circuit provides touch driving signals to the plurality of first touch electrode units 1 one by one. When the touch display panel is touched by a finger, the touch sensing signal output by the second touch electrode unit 2 changes, so that the position of the touch point is determined.
In the embodiment of the invention, the second connection portion 22 is configured to include the first sub-connection portion 221 and at least two second sub-connection portions 222, wherein the first sub-connection portion 221 is connected to the at least two second sub-connection portions 222, so that when the touch display panel operates, a conductive path of a touch signal between two adjacent second touch electrodes 21 can be increased. As shown in fig. 2, when a corresponding touch signal is transmitted between two adjacent second touch electrodes 21, the transmission may be performed along any one of paths including a path L1, a path L2, a path L3, and a path L4 shown in fig. 2.
As can be seen from fig. 5, fig. 5 is an enlarged schematic view of a partial area of a touch display panel in the related art, wherein signals can only be transmitted along two transmission paths, i.e., the path L1 'and the path L2' shown in fig. 5, when the signals are transmitted in two adjacent second touch electrodes 21 ', if there are a disconnection point X1' and a disconnection point X2 'on two connection portions 22', respectively, no matter where the disconnection point X1 'and the disconnection point X2' are located on the connection portions 22 ', the signals on the two adjacent second touch electrodes 21' cannot be transmitted.
At present, static electricity is easily generated in the manufacturing process of the display panel, and during the conduction process of the static electricity, the static electricity discharge phenomenon is easily generated when the static electricity passes through the overlapped area of the two conductors. Taking fig. 5 as an example, when static electricity passes through the connection portion 22 ', since the connection portion 22 ' is insulated from and intersects with the connection portion 12 ', static electricity discharge easily occurs at this position. The electrostatic discharge may form a strong electric field and a large instantaneous current, which may easily damage the connection portion 22 ', resulting in an open circuit of the connection portion 22', and further resulting in abnormal touch control.
In the embodiment of the invention, the second connection portion 22 includes the first sub-connection portion 221 and at least two second sub-connection portions 222, wherein the first sub-connection portion 221 is connected to the at least two second sub-connection portions 222, so that the conduction paths of the touch signals between two adjacent second touch electrodes 21 can be increased, even if some of the paths are abnormal due to electrostatic damage, the touch signals can still be conducted through other conduction paths, and the reliability of the touch display panel is greatly improved.
It should be understood that, when the first connection portion 12 and the first touch electrode 11 are disposed on the same layer, they are integrally formed, and there is no interface therebetween. To distinguish the first connection portion 12 and the first touch electrode 11 included in the first touch electrode unit 1, as shown in fig. 2, a portion of the first touch electrode unit 1 located between two nearest second sub-connection portions 222 may be named as the first connection portion 12, and the other portions may be named as the first touch electrode 11.
Optionally, as shown in fig. 6, fig. 6 is an enlarged schematic view of a partial area of another first touch electrode unit according to an embodiment of the present invention, where the first touch electrode unit 1 includes a first opening 10. Referring to fig. 2, when the first sub-connecting portion 221 is disposed, in the embodiment of the invention, the first sub-connecting portion 221 is disposed at a position corresponding to the position where the first opening 10 is disposed, so that an orthographic projection of the first sub-connecting portion 221 on the plane where the first touch electrode unit 1 is located is at least partially located in the first opening 10. The arrangement of the first opening 10 can reduce the coupling interference between the first sub-connection portion 221 and the first touch electrode unit 1, and is favorable for ensuring the accuracy of the touch signals transmitted by the first sub-connection portion 221 and the first touch electrode unit 1.
Fig. 6 illustrates an orthographic projection of the second sub-connecting portion 222 on the plane of the first touch electrode unit 1 by a dotted line. As shown in fig. 6, in order to reduce the length of the second sub-connection portion 222 and reduce the visibility of the second sub-connection portion 222, the width of the first touch electrode unit 1 at the position overlapping the second sub-connection portion 222 is generally set to be narrower. This arrangement causes a large change in resistance when the touch signal passes through the boundary between the first connection portion 12 and the first touch electrode 11 during the transmission of the touch signal in the first touch electrode unit 1. Because the position with a large resistance change is easy to be subjected to electrostatic shock, the boundary position between the first connection portion 12 and the first touch electrode 11 is an electrostatic weak position, and there is a risk that the touch performance of the touch display panel is disabled due to electrostatic shock.
In the embodiment of the present invention, as shown in fig. 6, the first opening 10 may be further disposed to divide the first connection portion 12 into a third sub-connection portion 121 and a fourth sub-connection portion 122 respectively located at both sides of the first opening 10, and the third sub-connection portion 121 and the fourth sub-connection portion 122 are located at both sides of the first opening 10 along the second direction h2, and the first opening 10 is located between the third sub-connection portion 121 and the fourth sub-connection portion 122. In the transmission process of the touch signal, the third sub-connection portion 121 and the fourth sub-connection portion 122 are equivalent to parallel connection, so that the resistance of the touch signal during transmission in the first connection portion 12 can be reduced, the difference of the resistance of the touch signal during transmission between the first touch electrode 11 and the first connection portion 12 can be reduced, the anti-electrostatic breakdown capability of the first touch electrode unit 1 can be improved, and the reliability of the touch display panel can be improved.
For example, as shown in fig. 3 and 4, the second touch electrode 21 and the first connection portion 12 may be disposed on the same layer in the embodiment of the invention. When the second touch electrode 21 and the first connection portion 12 are disposed on the same layer, as shown in fig. 6, a gap G1 is formed between the first connection portion 12 and the second touch electrode 21, and the minimum width d of the gap G1 is1Greater than 0, to ensure good insulation between the first connection portion 12 and the second touch electrode 21.
In the examples of the present invention, d2≥d1。d2Smaller, opposite and oppositeThe higher the process difficulty requirement for the first opening 10, the embodiment of the present invention is made by letting d2≥d1The difficulty of the process for forming the first opening 10 can be avoided, and the preparation of the first opening 10 can be compatible with the existing process capability for forming the first touch electrode unit 1 and the second touch electrode unit 2.
As shown in fig. 6, the minimum width d of the third sub-connection part 1213Minimum width d of the fourth sub-connecting portion 1224Are equal. With such an arrangement, it can be ensured that after the first opening 10 is provided, the problem that the resistance at a certain position of the third sub-connection portion 121 or the fourth sub-connection portion 122 is too large due to too small width of the third sub-connection portion 121 or the fourth sub-connection portion 122 can be avoided. In the embodiment of the present invention, the width direction of the first connection portion 12 refers to a direction parallel to the second direction h2 in a plane parallel to the touch display panel.
Illustratively, in embodiments of the invention, d2≤d3/2. After the shape and area of the first connection portion 12 are determined, the width of the first opening 10 is inversely related to the width of the third sub-connection portion 121 at any position, and the embodiment of the present invention is implemented by making the minimum width d of the first opening 102Not exceeding the minimum width d of the third sub-connection part 1213The width of the third sub-connection portion 121 can be prevented from being too small, and the resistance of the third sub-connection portion 121 is ensured not to be too large.
Exemplarily, as shown in fig. 7, fig. 7 is another enlarged schematic view of a region a1 in fig. 1, and the touch display panel further includes an electrostatic discharge component 3, where the electrostatic discharge component 3 is connected to the first sub-connection portion 221. The electrostatic discharge element 3 is provided to form a tip structure protruding from the first sub-connection portion 221. According to the principle of the tip discharge, the static electricity in the first sub-connection portion 221 is more easily conducted and collected to the static electricity discharge part 3. That is, the electrostatic discharge component 3 is disposed such that at least a portion of the static electricity in the second sub-connection portion 222 is transmitted to the electrostatic discharge component 3 and discharged, so as to reduce the static electricity flowing in the direction of the first sub-connection portion 221, and then reduce the possibility of abnormal signal transmission caused by the electrostatic damage to the first sub-connection portion 221 and the second sub-connection portion 222, which is beneficial to improving the electrostatic reliability of the touch display panel.
Alternatively, as shown in fig. 7, the number of the electrostatic discharge parts 3 may be two, and the two electrostatic discharge parts 3 are respectively formed at both ends of the first sub-connection portion 221.
For example, as shown in fig. 7, the electrostatic discharge component 3 and the first sub-connection portion 221 are respectively located at two sides of the second sub-connection portion 222, so that the distance between the electrostatic discharge component 3 and the first sub-connection portion 221 is increased, the electrostatic discharge component 3 and the first sub-connection portion 221 are distributed as much as possible, and the electrostatic discharge component 3 is prevented from affecting the first sub-connection portion 221.
For example, as shown in fig. 8, fig. 8 is a schematic cross-sectional view along DD' of fig. 7, and in the embodiment of the invention, the electrostatic discharge component 3 and the second sub-connecting portion 222 may be disposed in the same layer, so as to simplify the manufacturing process of the touch display panel. As shown in fig. 7, the electrostatic discharge part 3 and the second sub-connection portion 222 intersect at a first intersection point E.
Optionally, as shown in fig. 9, fig. 9 is an enlarged schematic view of a partial area of another first touch electrode unit according to an embodiment of the present invention, where the first touch electrode unit 1 includes a second opening 20. Referring to fig. 7 and 9, when the electrostatic discharge component 3 shown in fig. 7 is disposed, in the embodiment of the present invention, an orthogonal projection of the electrostatic discharge component 3 on a plane where the first touch electrode unit 1 is located may be at least partially located in the second opening 20. While ensuring that static electricity can be discharged via the static electricity discharge part 3 to improve the reliability of the first and second sub-connection parts 221 and 222, the signal coupling interference between the static electricity discharge part 3 and the first touch electrode unit 1 is reduced by the provision of the second opening 20.
Alternatively, as shown in fig. 9, the second opening 20 may communicate with the first opening 10.
As shown in fig. 7, the electrostatic discharge part 3 includes a bare end 30, and the bare end 30 refers to an end of the electrostatic discharge part 3 that is not connected to other structures. The distance d between the bare end 30 and the first intersection E5Length d of the second sub-connection portion 222 is not more than6Half of that. With this arrangement, while it is ensured that static electricity can be discharged via the static electricity discharging member 3 to improve the reliability of the first and second sub-connection portions 221 and 222, it is possible to avoid a visibility problem caused by setting the length of the static electricity discharging member 3 to be excessively long.
Illustratively, as shown in fig. 7, the first touch electrode 11 includes a first edge 101 and a second edge 102 oppositely disposed along the second direction h 2. Along the second direction h2, an orthogonal projection of the electrostatic discharge part 3 on the plane of the first touch electrode unit 1 is located between the first edge 101 and the second edge 102 of the same first touch electrode unit 1. Accordingly, as shown in fig. 9, in the second direction h2, the second opening 20 is located between the first edge 101 and the second edge 102 of the same first touch electrode unit 1. In the embodiment of the present invention, the shortest distance d between the second opening 20 and the first edge 1017D is greater than or equal to3The shortest distance d between the second opening 20 and the second edge 1028D is greater than or equal to3. With this arrangement, while the coupling interference between the electrostatic discharge part 3 and the first touch electrode unit 1 is weakened, the width of the second opening 20 can be prevented from being excessively large, so that a problem that the resistance of the portion of the first touch electrode unit 1 on either side of the second opening 20 in the second direction h2 is caused to be excessively large can be prevented.
For example, the first intersection point E may be a geometric center of the second sub-connection portion 222. The orthogonal projection of the second sub-connecting portion 222 on the plane where the first touch electrode unit 1 is located is defined as a third projection, and when the second sub-connecting portion 222 is disposed, the distance from the geometric center of the third projection to the first edge 101 may be equal to the distance from the geometric center of the third projection to the second edge 102. With this arrangement, one end of the second opening 20 can pass through the geometric center of the third projection, that is, one end of the second opening 20 close to the first sub-connecting portion 221 is equidistant from the first edge 101 and the second edge 102.
Optionally, when the shape of the electrostatic discharge component 3 in the orthographic projection of the plane where the first touch electrode unit 1 is located is set, the embodiment of the present invention may design the shape of the electrostatic discharge component 3 according to the extending direction of the first edge 101 and the second edge 102 closest to the electrostatic discharge component 3.
For example, an arbitrary direction may be defined as a reference direction in a plane of the touch display panel, as shown in fig. 10, fig. 10 is a further enlarged schematic view of an area a1 in fig. 1, and fig. 10 defines a reference direction h0 parallel to the first direction h1 and is taken as a schematic view along a direction from left to right shown in fig. 10, when the electrostatic discharge component 3 is disposed with a front projection between the first edge 101 and the second edge 102, an end of the electrostatic discharge component 3 close to the first sub-connecting portion 221 may be located at a position where the first intersection E is located, and an included angle θ between an extending direction of the electrostatic discharge component 3 at the arbitrary position and the reference direction h0 satisfies: alpha is not less than theta and not more than beta. Where α is an angle between the extending direction of the first edge 101 closest to the electrostatic discharge device 3 and the reference direction h0, and β is an angle between the extending direction of the second edge 102 closest to the electrostatic discharge device 3 and the reference direction h 0. With this arrangement, on the basis of reducing the coupling between the electrostatic discharge component 3 and the first touch electrode unit 1 by opening the second opening 20 in the first touch electrode unit 1 corresponding to the electrostatic discharge component 3, the width of the portion of the first touch electrode unit 1 on either side of the second opening 20 along the second direction h2 is not too small, that is, the resistance of the portion of the first touch electrode unit 1 on either side of the second opening 20 along the second direction h2 is not too large. The extending direction of the first edge 101 is a direction in which one end of the first edge 101 close to the first sub-connection portion points away from one end of the first sub-connection portion 221; the angle α indicates that the reference direction h0 is rotated by the angle α in the counterclockwise direction and is the same as the extending direction of the first edge 101. The extending direction of the second edge 102 is a direction in which one end of the second edge 102 close to the first sub-connection portion points away from one end of the first sub-connection portion 221. The angle β indicates that the reference direction h0 is rotated by the angle β in the counterclockwise direction to be the same as the extending direction of the second edge 102.
For example, as shown in fig. 7, in the embodiment of the present invention, the shape of the orthographic projection of the electrostatic discharge part 3 on the plane where the first touch electrode unit 1 is located may be designed as a straight line.
Alternatively, as shown in fig. 10, in the embodiment of the present invention, the shape of the orthogonal projection of the electrostatic discharge component 3 on the plane where the first touch electrode unit 1 is located may be designed as a polygonal line. When the shape of the electrostatic discharge part 3 is designed as a broken line, it is only necessary to consider the extending directions of the first edge and the second edge closest to the electrostatic discharge part 3 at different positions when designing the extending directions of the electrostatic discharge part 3 at the positions.
Optionally, in the embodiment of the present invention, the first touch electrode 11, the second touch electrode 21, and the first connection portion 12 may be made of a transparent conductive Oxide, such as one or more of Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), and Indium Gallium Zinc Oxide (IGZO). The second connection portion 22 and the electrostatic discharge element 3 may be made of a metal material or a transparent metal oxide.
As shown in fig. 11, fig. 11 is a schematic view of a touch display device according to an embodiment of the present invention, where the touch display device includes the touch display panel 1000. The specific structure of the touch display panel 1000 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.
In the touch display device provided by the embodiment of the invention, the second connection part is arranged to include the first sub-connection part and at least two second sub-connection parts, wherein the first sub-connection part is connected with the at least two second sub-connection parts, so that when the touch display panel works, the conductive paths of the touch signals between two adjacent second touch electrodes can be increased. Even if some paths are abnormal due to the problems of electrostatic damage and the like, the touch signals can still be conducted through other conducting paths, and the reliability of the touch display device is greatly improved.
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.
Claims (13)
1. A touch display panel, comprising:
the touch control device comprises a plurality of first touch control electrode units, a plurality of second touch control electrode units and a plurality of second connecting parts, wherein the first touch control electrode units comprise first touch control electrodes and first connecting parts which are alternately arranged along a first direction; the first connecting part is connected with two adjacent first touch electrodes; the plurality of first touch electrode units are arranged along a second direction; the first connecting part and the first touch electrode are arranged on the same layer;
a plurality of second touch electrode units including second touch electrodes and second connection parts alternately arranged along the second direction; the second connecting part is connected with two adjacent second touch electrodes; the second touch electrode units are arranged along the first direction; the second connecting part and the second touch electrode are arranged in different layers; the orthographic projection of the first connecting part on the plane where the display panel is located is a first projection, the orthographic projection of the second connecting part on the plane where the display panel is located is a second projection, and the first projection and the second projection are at least partially overlapped;
the second connecting parts comprise first sub-connecting parts and at least two second sub-connecting parts, the at least two second sub-connecting parts are connected with the two adjacent second touch electrodes, and the first sub-connecting parts are connected with the at least two second sub-connecting parts.
2. The display panel according to claim 1,
the first sub-connecting part and the second sub-connecting part are arranged on the same layer.
3. The touch display panel of claim 1,
the first touch electrode unit comprises a first opening, and the orthographic projection of the first sub-connecting part on the plane where the first touch electrode unit is located is at least partially located in the first opening.
4. The touch display panel of claim 3,
the second touch electrode and the first connecting part are arranged on the same layer; along the second direction, the first connecting part is positioned between two adjacent second touch electrodes;
a gap is formed between the first connecting part and the second touch electrode, and the minimum width of the gap is d1The minimum width of the first opening is d2，d2≥d1。
5. The touch display panel of claim 3,
the first connecting part comprises a third sub-connecting part and a fourth sub-connecting part, the third sub-connecting part and the fourth sub-connecting part are positioned on two sides of the first opening along the second direction, and the minimum width d of the third sub-connecting part3A minimum width d of the fourth sub-connection portion4Are equal.
6. The touch display panel of claim 5,
d2≤d3/2。
7. the touch display panel of claim 1,
the touch display panel further comprises an electrostatic discharge component, and the electrostatic discharge component is connected with the first sub-connecting portion.
8. The touch display panel of claim 7,
the electrostatic discharge component and the first sub-connecting portion are respectively located on two sides of the second sub-connecting portion.
9. The display panel according to claim 7,
the electrostatic discharge component and the second sub-connecting part are arranged on the same layer.
10. The touch display panel of claim 9,
the electrostatic discharge member and the second sub-connection portion intersect at a first intersection point;
the electrostatic discharge component comprises a bare end, and the distance between the bare end and the first intersection point is less than or equal to half of the length of the second sub-connection part.
11. The touch display panel of claim 7,
the first touch electrode unit comprises a second opening, and the orthographic projection of the electrostatic discharge component on the plane of the first touch electrode unit is at least partially positioned in the second opening.
12. The touch display panel of claim 11,
the first touch electrode unit comprises a first edge and a second edge which are oppositely arranged along the second direction; the orthographic projection of the electrostatic discharge component on the plane where the first touch electrode is located between the first edge and the second edge;
an included angle theta between an extending direction of the electrostatic discharge part at any position and a reference direction satisfies: alpha is not less than theta and not more than beta; wherein α is an angle between an extending direction of the first edge closest to the electrostatic discharge component and a reference direction; β is an angle between the extending direction of the second edge closest to the electrostatic discharge member and the reference direction; the extending direction of the first edge is a direction in which one end of the first edge close to the first sub-connecting part points to one end far away from the first sub-connecting part; the extending direction of the second edge is the direction in which one end of the second edge close to the first sub-connecting part points to one end far away from the first sub-connecting part; the extending direction of the electrostatic discharge component is the direction in which one end of the electrostatic discharge component close to the first sub-connecting part points to one end far away from the first sub-connecting part.
13. A touch display device comprising the touch display panel according to any one of claims 1 to 12.
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