CN114115607B - Touch display panel and touch display device - Google Patents
Touch display panel and touch display device Download PDFInfo
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- CN114115607B CN114115607B CN202111457151.6A CN202111457151A CN114115607B CN 114115607 B CN114115607 B CN 114115607B CN 202111457151 A CN202111457151 A CN 202111457151A CN 114115607 B CN114115607 B CN 114115607B
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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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- General Physics & Mathematics (AREA)
- 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 is used for improving 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; orthographic projection of the first connecting part on the plane of the display panel is a first projection, orthographic projection of the second connecting part on the plane of the display panel is a second projection, and the first projection and the second projection are at least partially overlapped; the second connecting portion comprises a first sub-connecting portion and at least two second sub-connecting portions, the at least two second sub-connecting portions are connected with two adjacent second touch electrodes, and the first sub-connecting portion is connected with the at least two second sub-connecting portions.
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 recent years, with rapid development of digital information and wireless mobile communication technology, many electronic products, such as mobile phones, have been changed from input using conventional keyboards or mice to using touch screens as input devices for the purpose of portability and miniaturization.
In order to integrate the touch function on the display panel, a touch electrode needs to be added in the display panel. How to ensure the electrical reliability of the touch electrode and ensure the good touch performance of the display panel becomes the research focus of related researchers.
[ invention ]
In view of the above, the embodiment of the invention provides a touch display panel and a touch display device for improving the electrical reliability of the touch display panel.
In one aspect, an embodiment of the present invention provides a touch display panel, including:
the touch panel comprises a plurality of first touch electrode units, a plurality of second touch electrode units and a plurality of first connecting parts, wherein the first touch electrode units comprise first touch 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 the second direction; the first connecting part and the first touch electrode are arranged on the same layer;
the plurality of second touch electrode units comprise second touch electrodes and second connecting parts which are alternately arranged along the second direction; the second connecting part is connected with two adjacent second touch electrodes; the plurality of second touch electrode units are arranged along the first direction; the second connecting part and the second touch electrode are arranged in different layers; orthographic projection of the first connecting part on the plane of the display panel is a first projection, orthographic projection of the second connecting part on the plane of the display panel is a second projection, and the first projection and the second projection are at least partially overlapped;
the second connecting portion comprises a first sub-connecting portion and at least two second sub-connecting portions, the at least two second sub-connecting portions are connected with two adjacent second touch electrodes, and the first sub-connecting portions are connected with the at least two second sub-connecting portions.
On the other hand, the embodiment of the invention provides a touch display device, which comprises 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 part is arranged to comprise the first sub-connecting part and at least two second sub-connecting parts, wherein the first sub-connecting part is connected with the at least two second sub-connecting parts, and when the touch display panel works, the conduction path of a touch signal between two adjacent second touch electrodes can be increased. Even if the partial paths are abnormal due to the problems of static electricity injury and the like, the touch signal can still be conducted through other conducting paths, so that 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 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 diagram of a touch display panel according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of the area A1 in 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 portion of a touch display panel according to 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 present invention;
FIG. 7 is another enlarged schematic view of the area A1 in FIG. 1;
FIG. 8 is a schematic cross-sectional view taken along DD' of FIG. 7;
fig. 9 is an enlarged schematic view of a partial area of a first touch electrode unit according to an embodiment of the present invention;
FIG. 10 is a further enlarged schematic view of area A1 of FIG. 1;
fig. 11 is a schematic 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, 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 to these terms. These terms are only used to distinguish touch electrode units having different extending directions from each other. For example, a first touch electrode unit may also be referred to as a second touch electrode unit, and similarly, a second touch electrode unit may also be referred to as a first touch electrode unit, without departing from the scope of embodiments of the present invention.
An embodiment of the present invention provides a touch display panel, as shown in fig. 1 and fig. 2, fig. 1 is a schematic diagram of the touch display panel provided by the embodiment of the present invention, and fig. 2 is an enlarged schematic diagram of a region 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 parts 12 alternately arranged along a first direction h 1; the first connecting part 12 is connected with 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 along the second direction h 2; the second connection 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 connection 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, in which the first connection portion 12 and the second connection portion 22 are insulated and crossed, 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, the front projection of the first connection portion 12 on the plane of the display panel is a first projection, the front projection of the second connection 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 the adjacent two 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 showing that the first sub-connection portion 221 is connected to two second sub-connection portions 222. Illustratively, as shown in fig. 2, the first sub-connection part 221 and the second sub-connection part 222 are different in extending direction, and are cross-connected to each other.
Optionally, the first sub-connection portion 221 is disposed in a different layer from the second touch electrode 21, and the second sub-connection portion 222 is disposed in a different layer from the second touch electrode 21.
As shown in fig. 4, fig. 4 is a schematic cross-sectional view along CC' of fig. 2, and the embodiment of the invention may enable the first sub-connection portion 221 and the second sub-connection portion 222 to be disposed in the same layer, so as 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 the substrate 100 side, the display layer 300 is located on the side of the array layer 200 away from the substrate 100, and the touch layer 400 is located on the side of the display layer 300 away from the substrate 100.
The array layer 200 includes a pixel driving circuit. The display layer 300 includes a light emitting unit. The light emitting unit is electrically connected to the pixel driving circuit. The pixel driving circuit includes a plurality of thin film transistors T, 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 (Organic Light Emitting Diode, abbreviated as OLED), a quantum dot light emitting diode (Quantum Dots Light Emitting Diode, abbreviated as QLED), and a Micro light emitting diode (Micro Light Emitting Diode, abbreviated as 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-connection portion 222 is electrically connected to one second touch electrode 21 through a via H on the touch insulating layer 403, and two adjacent second touch electrodes 21 are connected through the second sub-connection portion 222.
It should be noted that the first touch conductive layer 401 shown in fig. 3 is only shown on the side of the second touch conductive layer 402 away from the substrate 100. In some alternative embodiments, the first touch conductive layer 401 may also be located on a side of the second touch conductive layer 402 near the substrate 100, which is not illustrated in the drawings.
For example, when the touch display panel works, 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 with a finger, the touch sensing signal output from the second touch electrode unit 2 is changed, thereby judging the position of the touch point.
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, where 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 works, the conduction path of the touch signal between two adjacent second touch electrodes 21 can be increased. As shown in fig. 2, when the corresponding touch signal is transmitted between the adjacent two second touch electrodes 21, it may be transmitted along any one path including the path L1, the path L2, the path L3, and the path L4 shown in fig. 2.
As can be seen from comparing fig. 5, fig. 5 is an enlarged schematic diagram of a partial area of a touch display panel in the related art, wherein signals can only be transmitted along two transmission paths, namely a path L1 'and a path L2', shown in fig. 5 when the signals are transmitted in two adjacent second touch electrodes 21', and if two connection portions 22' respectively have a disconnection point X1 'and a disconnection point X2', no matter where the disconnection point X1 'and the disconnection point X2' are located in the connection portions 22', the problem that the signals on the two adjacent second touch electrodes 21' cannot be transmitted will be caused.
At present, static electricity is easily generated in the manufacturing process of the display panel, and in the conducting 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', electrostatic discharge easily occurs at this position because the connection portion 22' is insulated from the connection portion 12 '. The electrostatic discharge can form a strong electric field and a transient large current, which easily damages the connection portion 22', and causes the connection portion 22' to be disconnected, thereby causing abnormal touch.
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, where the first sub-connection portion 221 is connected to the at least two second sub-connection portions 222, so that the conductive paths of the touch signals between two adjacent second touch electrodes 21 can be increased, and even if a part of the paths are abnormal due to the problems of static electricity injury, the touch signals can still be conducted through other conductive paths, thereby greatly improving the reliability of the touch display panel.
It should be understood that when the first connection portion 12 and the first touch electrode 11 are disposed in the same layer, they are integrally formed without an interface therebetween. In order 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 second sub-connection portions 222 closest to each other may be named as a first connection portion 12, and other portions may be named as first touch electrodes 11.
Alternatively, 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-connection portion 221 is disposed, the first sub-connection portion 221 may be disposed at a position corresponding to the first opening 10, so that the front projection of the first sub-connection portion 221 on the plane of the first touch electrode unit 1 is at least partially located in the first opening 10. The arrangement of the first opening 10 can reduce coupling interference between the first sub-connection portion 221 and the first touch electrode unit 1, which is beneficial to ensuring accuracy of touch signals transmitted by the first sub-connection portion 221 and the first touch electrode unit 1.
Fig. 6 illustrates, in dashed lines, an orthographic projection of the second sub-connection portion 222 on the plane of the first touch electrode unit 1. As shown in fig. 6, in order to shorten 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 narrower. This arrangement causes a large change in resistance when passing through the junction 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. Since static impact damage is very easy to occur at the position with larger resistance change, the boundary position between the first connection part 12 and the first touch electrode 11 is a weak electrostatic position, and there is a risk that the static impact damage leads to failure of touch performance of the touch display panel.
In the embodiment of the present invention, as shown in fig. 6, the first opening 10 may be further configured to divide the first connection portion 12 into a third sub-connection portion 121 and a fourth sub-connection portion 122 respectively located at two sides of the first opening 10, where the third sub-connection portion 121 and the fourth sub-connection portion 122 are located at two 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 part 121 and the fourth sub-connection part 122 are equivalent to being connected in parallel, so that the resistance of the touch signal when being transmitted in the first connection part 12 can be reduced, the difference of the resistance of the touch signal when being transmitted between the first touch electrode 11 and the first connection part 12 can be reduced, the anti-static 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 fig. 4, the second touch electrode 21 and the first connection portion 12 may be disposed on the same layer in the embodiment of the present invention. When the second touch electrode 21 and the first connection portion 12 are arranged in 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 1 Greater than 0 to ensure good insulation between the first connection portion 12 and the second touch electrode 21.
In the embodiment of the invention, d 2 ≥d 1 。d 2 The smaller the requirement for the process of forming the first opening 10, the more difficult the process is, and the embodiment of the invention is realized by making d 2 ≥d 1 The 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 121 3 Minimum width d with fourth sub-connection 122 4 Equal. So arranged, it is possible to ensure that after the first opening 10 is provided, the occurrence of excessive resistance at a certain position of the third sub-connection portion 121 or the fourth sub-connection portion 122 due to too small a width of the third sub-connection portion 121 or the fourth sub-connection portion 122 is avoidedA big problem. 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.
Exemplary, in embodiments of the invention, d 2 ≤d 3 /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 achieved by making the minimum width d of the first opening 10 2 Not exceeding the minimum width d of the third sub-connection 121 3 Is possible to avoid the width of the third sub-connection part 121 from being excessively small, and to ensure that the resistance of the third sub-connection part 121 is not excessively large.
As shown in fig. 7, fig. 7 is another enlarged schematic view of the area A1 in fig. 1, where the touch display panel further includes an electrostatic discharge member 3, and the electrostatic discharge member 3 is connected to the first sub-connection portion 221. The electrostatic discharge element 3 is disposed so as to form a tip structure protruding from the first sub-coupling portion 221. According to the tip discharge principle, static electricity in the first sub-connection 221 may be more easily conducted and accumulated to the static electricity discharge part 3. That is, the electrostatic discharge member 3 may be configured such that at least a portion of the static electricity in the second sub-connection portion 222 is transferred to the electrostatic discharge member 3 and discharged, thereby reducing static electricity flowing in a direction in which the first sub-connection portion 221 is located, and further reducing a possibility that the first sub-connection portion 221 and the second sub-connection portion 222 are damaged by static electricity to cause abnormal signal transmission, which is beneficial to improving electrostatic reliability of the touch display panel.
Alternatively, as shown in fig. 7, the number of the electrostatic discharge members 3 may be two, and two electrostatic discharge members 3 are respectively formed at both ends of the first sub-connection portion 221.
As shown in fig. 7, the electrostatic discharge member 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 member 3 and the first sub-connection portion 221 is increased, the electrostatic discharge member 3 and the first sub-connection portion 221 are dispersed as much as possible, and the electrostatic discharge member 3 is prevented from affecting the first sub-connection portion 221.
As shown in fig. 8, fig. 8 is a schematic cross-sectional view along DD' of fig. 7, and the embodiment of the invention may enable the electrostatic discharge unit 3 and the second sub-connection portion 222 to 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 element 3 and the second sub-connection 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 a first touch electrode unit according to another embodiment of the present invention, where the first touch electrode unit 1 includes a second opening 20. Referring to fig. 7 and fig. 9, when the electrostatic discharge element 3 shown in fig. 7 is disposed, the orthographic projection of the electrostatic discharge element 3 on the plane where the first touch electrode unit 1 is located may be at least partially located in the second opening 20 according to the embodiment of the present invention. While ensuring that static electricity can be discharged via the static electricity discharge member 3 to improve reliability of the first sub-connection portion 221 and the second sub-connection portion 222, signal coupling interference between the static electricity discharge member 3 and the first touch electrode unit 1 is reduced by the arrangement of the second opening 20.
Alternatively, as shown in fig. 9, the second opening 20 may be in communication with the first opening 10.
With continued reference to fig. 7, the static discharge element 3 includes a bare end 30, with the bare end 30 referring to the end of the static discharge element 3 that is not connected to other structures. Distance d between bare end 30 and first intersection point E 5 Less than or equal to the length d of the second sub-connection 222 6 Half of (a) is provided. Thus, while ensuring that static electricity can be discharged via the static electricity discharge member 3 to improve reliability of the first sub-connection portion 221 and the second sub-connection portion 222, it is possible to avoid a visibility problem caused by an excessively long length of the static electricity discharge member 3.
As illustrated in fig. 7, the first touch electrode 11 includes a first edge 101 and a second edge 102 disposed opposite to each other along the second direction h 2. Along the second direction h2, the orthographic projection of the electrostatic discharge component 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, the second openings 20 are located at the same first position along the second direction h2Between the first edge 101 and the second edge 102 of a touch electrode unit 1. In the embodiment of the invention, the shortest distance d between the second opening 20 and the first edge 101 7 D is greater than or equal to d 3 Shortest distance d between second opening 20 and second edge 102 8 D is greater than or equal to d 3 . By doing so, while weakening the coupling interference between the electrostatic discharge section 3 and the first touch electrode unit 1, the width of the second opening 20 can be prevented from being excessively large, so that the problem of causing excessive resistance of the portion of the first touch electrode unit 1 located on either side of the second opening 20 in the second direction h2 can be avoided.
The first intersection E may be a geometric center of the second sub-connection 222. The orthographic projection of the second sub-connection 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-connection portion 222 is disposed, the distance from the geometric center of the third projection to the first edge 101 and the distance from the geometric center of the third projection to the second edge 102 may be equal. So arranged, one end of the second opening 20 may pass through the geometric center of the third projection, i.e. the end of the second opening 20 near the first sub-connection 221 is equidistant from the first edge 101 and the second edge 102.
Alternatively, in setting the shape of the orthographic projection of the electrostatic discharge element 3 on the plane in which the first touch electrode unit 1 is located, the embodiment of the present invention may design the shape of the electrostatic discharge element 3 according to the extending directions of the first edge 101 and the second edge 102 closest to the electrostatic discharge element 3.
For example, an arbitrary direction may be defined as a reference direction in a plane where the touch display panel is located, as shown in fig. 10, fig. 10 is another enlarged schematic view of a region A1 in fig. 1, and in fig. 10, a reference direction h0 is defined to be parallel to the first direction h1 and is shown to be a direction pointing from left to right in fig. 10, which is shown as an illustration, where when the electrostatic discharge element 3 is disposed in a front projection manner between the first edge 101 and the second edge 102, an end portion of the electrostatic discharge element 3 near the first sub-connection 221 may be located at a position where the first intersection point E is located, and an angle θ between an extending direction of the electrostatic discharge element 3 at the arbitrary position and the reference direction h0 may be set as follows: alpha is less than or equal to theta and less than or equal to beta. Where α is an angle between the extending direction of the first edge 101 closest to the electrostatic discharge element 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 element 3 and the reference direction h 0. By arranging the second opening 20 corresponding to the electrostatic discharge member 3 in the first touch electrode unit 1, on the basis of reducing the coupling between the electrostatic discharge member 3 and the first touch electrode unit 1, the width of the portion, located on either side of the second opening 20, of the first touch electrode unit 1 along the second direction h2 can be ensured not to be too small, that is, the resistance of the portion, located on either side of the second opening 20, of the first touch electrode unit 1 along the second direction h2 can be ensured not to be too large. The extending direction of the first edge 101 is such that the end of the first edge 101 close to the first sub-connection portion points in a direction away from the end of the first sub-connection portion 221; the angle α indicates that the reference direction h0 is rotated counterclockwise by the angle α and then the same as the extending direction of the first edge 101. The extending direction of the second edge 102 is that an end of the second edge 102 close to the first sub-connection part points in a direction away from an end of the first sub-connection part 221. The angle β indicates that the reference direction h0 is rotated counterclockwise by the angle β and then is the same as the extending direction of the second edge 102.
As shown in fig. 7, the shape of the orthographic projection of the electrostatic discharge element 3 on the plane of the first touch electrode unit 1 may be designed to be a straight line.
Alternatively, as shown in fig. 10, in the embodiment of the present invention, the shape of the orthographic projection of the electrostatic discharge unit 3 on the plane where the first touch electrode unit 1 is located may be designed as a fold line. When the shape of the static electricity discharging member 3 is designed as a fold line, it is only necessary to consider the extending directions of the first edge and the second edge closest to the static electricity discharging member 3 at different positions when designing the extending directions of the static electricity discharging member 3 at the positions.
Alternatively, in the embodiment of the present invention, the materials of the first touch electrode 11, the second touch electrode 21 and the first connection portion 12 may be any one or more of transparent conductive oxides, such as Indium Tin Oxide (ITO), indium zinc Oxide (Indium Zinc Oxide, IZO), and Indium gallium zinc Oxide (Indium Gallium Zinc Oxide, IGZO). The materials of the second connection portion 22 and the electrostatic discharge element 3 may be selected from metal materials or transparent metal oxides.
The embodiment of the invention further provides a touch display device, as shown in fig. 11, fig. 11 is a schematic diagram of the touch display device according to the embodiment of the invention, where the touch display device includes the touch display panel 1000 described above. The specific structure of the touch display panel 1000 has been described in detail in the above embodiments, and will not be described herein. 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.
According to the touch display device provided by the embodiment of the invention, the second connecting part comprises the first sub-connecting part and at least two second sub-connecting parts, wherein the first sub-connecting part is connected with the at least two second sub-connecting parts, and when the touch display panel works, the conduction path of a touch signal between two adjacent second touch electrodes can be increased. Even if the partial paths are abnormal due to the problems of static electricity injury and the like, the touch signal can still be conducted through other conducting paths, so that the reliability of the touch display device is greatly improved.
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.
Claims (11)
1. A touch display panel, comprising:
the touch panel comprises a plurality of first touch electrode units, a plurality of second touch electrode units and a plurality of first connecting parts, wherein the first touch electrode units comprise first touch 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 the second direction; the first connecting part and the first touch electrode are arranged on the same layer;
the plurality of second touch electrode units comprise second touch electrodes and second connecting parts which are alternately arranged along the second direction; the second connecting part is connected with two adjacent second touch electrodes; the plurality of second touch electrode units are arranged along the first direction; the second connecting part and the second touch electrode are arranged in different layers; orthographic projection of the first connecting part on the plane of the display panel is a first projection, orthographic projection of the second connecting part on the plane of the display panel is a second projection, and the first projection and the second projection are at least partially overlapped;
the second connecting part comprises a first sub-connecting part and at least two second sub-connecting parts, the at least two second sub-connecting parts are connected with two adjacent second touch electrodes, and the first sub-connecting parts are connected with the at least two second sub-connecting parts;
the first sub-connecting part and the second sub-connecting part are arranged on the same layer;
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 positioned in the first opening.
2. The touch display panel of claim 1, wherein,
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 arranged between the first connecting part and the second touch electrode, and the minimum width of the gap is d 1 The minimum width of the first opening is d 2 ，d 2 ≥d 1 。
3. The touch display panel of claim 1, wherein,
the first connecting part comprises a firstThree sub-connecting portions and a fourth sub-connecting portion, along the second direction, the third sub-connecting portion and the fourth sub-connecting portion are located at two sides of the first opening, and the minimum width d of the third sub-connecting portion 3 Minimum width d of the connection part with the fourth sub-part 4 Equal.
4. The touch display panel of claim 3, wherein,
d 2 ≤d 3 /2。
5. the touch display panel of claim 1, wherein,
the touch display panel further comprises an electrostatic discharge component, and the electrostatic discharge component is connected with the first sub-connecting portion.
6. The touch display panel of claim 5, wherein,
the static electricity discharging component and the first sub-connecting part are respectively positioned at two sides of the second sub-connecting part.
7. The display panel of claim 5, wherein the display panel comprises,
the electrostatic discharge component is arranged on the same layer as the second sub-connecting part.
8. The touch display panel of claim 7, wherein,
the electrostatic discharge member and the second sub-connection portion intersect at a first intersection point;
the electrostatic discharge member includes a bare end, and a distance between the bare end and the first intersection point is equal to or less than half of a length of the second sub-connection portion.
9. The touch display panel of claim 5, wherein,
the first touch electrode unit comprises a second opening, and the orthographic projection of the static electricity discharging component on the plane where the first touch electrode unit is located is at least partially located in the second opening.
10. The touch display panel of claim 9, wherein the touch display panel comprises,
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 is positioned between the first edge and the second edge;
the included angle theta between the extending direction of the static electricity discharge part at any position and the reference direction meets the following conditions: alpha is less than or equal to theta and less than or equal to beta; wherein alpha is an included angle between the extending direction of the first edge closest to the electrostatic discharge part and a reference direction; beta is an included angle between the extending direction of the second edge closest to the electrostatic discharge part and the reference direction; the extending direction of the first edge is that one end of the first edge, which is close to the first sub-connecting part, points to a direction away from one end of the first sub-connecting part; the extending direction of the second edge is that one end of the second edge close to the first sub-connecting part points to a direction away from one end of the first sub-connecting part; the extending direction of the static electricity discharging component is that one end of the static electricity discharging component close to the first sub-connecting part points to a direction away from one end of the first sub-connecting part.
11. A touch display device comprising the touch display panel of any one of claims 1-10.
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