CN113961099A - Touch display panel and touch display device - Google Patents
Touch display panel and touch display device Download PDFInfo
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- CN113961099A CN113961099A CN202111261208.5A CN202111261208A CN113961099A CN 113961099 A CN113961099 A CN 113961099A CN 202111261208 A CN202111261208 A CN 202111261208A CN 113961099 A CN113961099 A CN 113961099A
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- electrode
- display panel
- projection
- electrostatic discharge
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
- H05F3/00—Carrying-off electrostatic charges
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- 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
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
Abstract
The invention provides a touch display panel and a device, relates to the technical field of display, and aims to improve the antistatic capacity of the touch display panel. The touch display panel comprises a first electrostatic discharge electrode, a first touch electrode unit and a second touch electrode unit, wherein the first touch electrode unit comprises a first touch electrode and a first connecting part which are electrically connected; the first connecting part and the first touch electrode are arranged on the same layer; the second touch electrode unit comprises a second touch electrode and a second connecting part which are electrically connected; the second connecting part and the first connecting part are crossed in an insulating way; the orthographic projection of the first electrostatic discharge electrode on the plane where the display panel is located is a first projection, the orthographic projection of the first touch electrode on the plane where the display panel is located is a second projection, the orthographic projection of the second touch electrode on the plane where the display panel is located is a third projection, and the first projection is located between the second projection and the third projection; the first electrostatic discharge electrode is electrically connected with the first touch electrode through the third connecting part.
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, improve the antistatic capability of the touch electrode, and avoid electrostatic damage to the touch electrode becomes the 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 display device, so as to improve the antistatic capability 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 first connecting part are crossed in an insulating way;
the orthographic projection of the first electrostatic discharge electrode on the plane where the display panel is located is a first projection, the orthographic projection of the first touch electrode on the plane where the display panel is located is a second projection, the orthographic projection of the second touch electrode on the plane where the display panel is located is a third projection, and the first projection is located between the second projection and the third projection;
and the first electrostatic discharge electrode is electrically connected with the first touch electrode through the third connecting part.
In another aspect, an embodiment of the invention provides a touch display device, which includes the touch display panel.
In the touch display panel and the touch display device provided by the embodiments of the invention, the third connecting portion connected to the first touch electrode is provided, and the third connecting portion is equivalent to a tip structure protruding from the first touch electrode. According to the principle of point discharge, static electricity in the first touch electrode is more easily conducted and gathered to the third connecting portion. That is, the third connection portion is disposed such that at least a portion of static electricity in the first touch electrode is transmitted to the third connection portion, thereby reducing static electricity flowing in a direction of the first connection portion, and further reducing a possibility of an electrostatic discharge phenomenon occurring at positions of the first connection portion and the second connection portion.
Furthermore, in the embodiment of the invention, by providing the first electrostatic discharge electrode connected to the third connection portion, the static electricity accumulated in the third connection portion can be conducted to the first electrostatic discharge electrode. If the amount of static electricity in the first electrostatic discharge electrode is small, the part of static electricity can be stored in the first electrostatic discharge electrode. If the amount of static electricity in the first electrostatic discharge electrode is large, the static electricity can be discharged by damaging the first electrostatic discharge electrode, and the first touch electrode and the first connection portion can be prevented from being influenced.
[ 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 an enlarged schematic view of region A2 of FIG. 1;
FIG. 5 is another enlarged schematic view of region A2 of FIG. 1;
FIG. 6 is a further enlarged schematic view of region A2 of FIG. 1;
FIG. 7 is a further enlarged schematic view of region A2 of FIG. 1;
FIG. 8 is a further enlarged schematic view of region A2 of FIG. 1;
FIG. 9 is a further enlarged schematic view of region A2 of FIG. 1;
FIG. 10 is a further enlarged schematic view of region A2 of FIG. 1;
FIG. 11 is a further enlarged schematic view of region A2 of FIG. 1;
FIG. 12 is a further enlarged schematic view of region A2 of FIG. 1;
FIG. 13 is a further enlarged schematic view of region A2 of FIG. 1;
fig. 14 is a schematic diagram of a 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 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 plurality of second touch electrode units 2 are arranged along the first direction h 1; the plurality of first touch electrode units 1 are arranged along the second direction h 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 first connection portion 12 and the first touch electrode 11 are disposed on the same layer. 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 second connection portion 22 and the first connection portion 12 are insulated and crossed. That is, the second connection portion 22 and the first connection portion 12 are provided in different layers. The second connection portion 22 and the first touch electrode 11 are disposed in different layers.
For example, the second touch electrode 21 and the first touch electrode 11 may be disposed in the same layer.
As shown in fig. 3, fig. 3 is a schematic cross-sectional view taken along BB' of fig. 2, and the display panel 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 connection portion 22 is located on the first touch conductive layer 401. One end of the second connection portion 22 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 connection portion 22.
In fig. 3, the first touch conductive layer 401 is illustrated as being located on a 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 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 11 may be used as a touch sensing electrode, and the second touch electrode 21 may be used as a touch driving electrode; alternatively, the first touch electrode 11 is used as a touch driving electrode, and the second touch electrode 21 is used as a touch sensing electrode, which is not limited in the embodiment of the invention. Taking the first touch electrode 11 as a touch sensing electrode and the second touch electrode 21 as a touch driving electrode as an example, when the touch display panel is in operation, the touch driving circuit provides touch driving signals to the plurality of first touch electrodes 11 one by one. When the touch display panel is touched by a finger, the touch sensing signal output by the second touch electrode 21 changes, so as to determine the position of the touch point.
As shown in fig. 4, fig. 4 is an enlarged schematic view of the area a2 in fig. 1, the display panel further includes a first electrostatic discharge electrode 41 and a third connection portion 51, an orthogonal projection of the first electrostatic discharge electrode 41 on the plane of the display panel is a first projection 410, an orthogonal projection of the first touch electrode 11 on the plane of the display panel is a second projection 110, and an orthogonal projection of the second touch electrode 21 on the plane of the display panel is a third projection 210. The first projection 410 is located between the second projection 110 and the third projection 210. The first electrostatic discharge electrode 41 is electrically connected to the first touch electrode 11 through the third connection portion 51.
Electrostatic Discharge (Electrostatic Discharge) refers to the transfer of charge caused by objects having different Electrostatic potentials coming into close proximity or direct contact with each other. In the process of conducting static electricity, electrostatic discharge is easy to occur when passing through the overlapped area of two conductors. In the process of conducting static electricity in the first touch electrode unit 1, when passing through the first connection portion 12, since the first connection portion 12 and the second connection portion 22 are crossed in an insulated manner, static electricity discharge easily occurs at the position. The electrostatic discharge may form a strong electric field and a large instantaneous current, and may even damage the insulating layer between the first connection portion 12 and the second connection portion 22 in a serious condition, resulting in abnormal touch control.
In the embodiment of the invention, the third connection portion 51 connected to the first touch electrode 11 is provided, and the third connection portion 51 is equivalent to a tip structure protruding from the first touch electrode 11. According to the principle of the point discharge, the static electricity in the first touch electrode 11 is more easily conducted and collected to the third connection portion 51. That is, the third connection portion 51 is disposed such that at least a portion of the first touch electrode 11 is electrostatically transmitted to the third connection portion 51, thereby reducing the static electricity flowing toward the first connection portion 12, and further reducing the possibility of electrostatic discharge at the positions of the first connection portion 12 and the second connection portion 22.
Further, the embodiment of the invention can conduct the static electricity accumulated in the third connection portion 51 to the first electrostatic discharge electrode 41 by providing the first electrostatic discharge electrode 41 connected to the third connection portion 51. If the amount of static electricity in the first electrostatic discharge electrode 41 is small, this part of static electricity can be stored in the first electrostatic discharge electrode 41. If the amount of static electricity in the first electrostatic discharge electrode 41 is large, the static electricity is discharged by damaging the first electrostatic discharge electrode 41, and the first touch electrode 11 and the first connection portion 12 can be prevented from being affected.
Particularly, based on the above arrangement manner provided by the embodiment of the present invention, the length of the first touch electrode unit 1 may be set to be shorter, so as to be applied to a small-sized smart wearable device such as a watch, which has a higher requirement on electrostatic reliability. Compared with a large-sized device, since the small-sized device has a smaller area, the length of the first touch electrode unit 1 is set to be shorter, and the areas of the first touch electrode 11 and the first connection portion 12 are also smaller, in the related art, the maximum amount of static electricity that can be borne by the touch electrode in the small-sized device is limited, and the touch failure problem caused by static electricity damage is more likely to occur. That is, the requirements for electrostatic reliability will be higher for small-sized devices. By adopting the arrangement mode provided by the embodiment of the invention, the third connecting part 51 connected with the first touch electrode 11 and the first electrostatic discharge electrode 41 are additionally arranged, so that even if the touch display panel is applied to small-size equipment, the electrostatic reliability of the touch display panel can be ensured, and the small-size equipment is ensured to have excellent touch experience.
For example, the first electrostatic discharge electrodes 41 may be disposed between the first touch electrode 11 and the second touch electrode 21, so that the first electrostatic discharge electrodes 41 can carry more electrostatic charges, and thus more electrostatic charges can be transferred from the first touch electrode 11 to the first electrostatic discharge electrodes 41, and the electrostatic charges accumulated in the first touch electrode 11 can be further reduced. Exemplarily, as shown in fig. 5, fig. 5 is another enlarged schematic view of the area a2 in fig. 1, and in fig. 5, two first electrostatic discharge electrodes 41 are disposed between the first touch electrode 11 and the second touch electrode 21 as an illustration.
Alternatively, as shown in fig. 6, fig. 6 is another enlarged schematic view of the area a2 in fig. 1, and in the embodiment of the present invention, one first electrostatic discharge electrode 41 may be electrically connected to the first touch electrode 11 through at least two third connection portions 51 to increase the conduction path of the static electricity derived from the first touch electrode 11, so as to further reduce the static charge accumulated in the first touch electrode 11. Fig. 6 illustrates two third connection portions 51 provided between the first touch electrode 11 and the first electrostatic discharge electrode 41.
For example, the third connection portion 51 and the first touch electrode 11 may be formed by using different materials according to the embodiment of the present invention.
For example, in the embodiment of the invention, the resistivity of the third connection portion 51 may be smaller than the resistivity of the first touch electrode 11, so that the static electricity on the first touch electrode 11 is easier to be conducted away through the third connection portion 51.
Optionally, the first touch electrode 11 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 third connection portion 51 may be made of a metal material.
When manufacturing the touch display panel, the third connecting portion 51 and the first touch electrode 11 may be disposed in different layers according to the embodiment of the invention.
For example, in the embodiment of the invention, the third connection portion 51 may be located on the first touch conductive layer 401 shown in fig. 3. When the touch display panel is manufactured, the third connection portion 51 and the second connection portion 22 may be disposed on the same layer, so as to avoid the complexity of the manufacturing process of the touch display panel increased by the introduction of the third connection portion 51. Moreover, by arranging the third connection portion 51 and the second connection portion 22 on the same layer, the third connection portion 51 can be prepared by using the existing film layer in the touch display panel, so that the addition of a new film layer in the touch display panel is avoided, and the thickness of the touch display panel can be reduced.
Exemplarily, as shown in fig. 7, fig. 7 is a further enlarged schematic view of an area a2 in fig. 1, and the touch display panel further includes a first dummy electrode 61. The orthographic projection of the first dummy electrode 61 on the plane of the display panel is located between the first projection 410 and the third projection 210. In the embodiment of the present invention, the first dummy electrode 61 is in a floating state, that is, the first dummy electrode 61 is not loaded with any electrical signal. The first electrostatic discharge electrode 41 is electrically connected to the first touch electrode 11, and both transmit the same touch signal. The first dummy electrode 61 is disposed to isolate the first electrostatic discharge electrode 41 from the second touch electrode 21, so that the first dummy electrode 61 can shield the touch signal interference on the first electrostatic discharge electrode 41 and the second touch electrode 21. For example, the first dummy electrode 61 may be disposed at the same layer as the first touch electrode 11.
Optionally, as shown in fig. 8, fig. 8 is another enlarged schematic view of the area a2 in fig. 1, where the touch display panel further includes a second electrostatic discharge electrode 42 and a fourth connection portion 52; the orthogonal projection of the second electrostatic discharge electrode 42 on the plane of the display panel is a fourth projection 420, and the fourth projection 420 is located between the second projection 110 and the third projection 210. The second electrostatic discharge electrode 42 is electrically connected to the second touch electrode 21 through the fourth connection portion 52.
In the embodiment of the invention, the fourth connection portion 52 connected to the second touch electrode 21 is provided, and the fourth connection portion 52 is equivalent to a tip structure protruding from the second touch electrode 21. According to the principle of the tip discharge, the static electricity in the second touch electrode 21 is more easily conducted and collected to the fourth connection portion 52. That is, the fourth connection portion 52 is disposed such that at least a portion of the second touch electrode 21 is electrostatically transmitted to the fourth connection portion 52, so as to reduce the static electricity flowing toward the second connection portion 22, and further reduce the possibility of electrostatic discharge at the positions of the first connection portion 12 and the second connection portion 22.
Further, the embodiment of the invention can conduct the static electricity accumulated in the fourth connection portion 52 to the second electrostatic discharge electrode 42 by providing the second electrostatic discharge electrode 42 connected to the fourth connection portion 52. If the amount of static electricity in the second electrostatic discharge electrode 42 is small, the part of static electricity can be stored in the second electrostatic discharge electrode 42. If the amount of static electricity in the second electrostatic discharge electrode 42 is large, the static electricity is discharged by damaging the second electrostatic discharge electrode 42, so as to avoid affecting the second touch electrode 21 and the second connection portion 22.
For example, the second electrostatic discharge electrodes 42 may be disposed between the first touch electrode 11 and the second touch electrode 21, so that the second electrostatic discharge electrodes 42 can carry more electrostatic charges, and thus more electrostatic charges can be transferred from the second touch electrode 21 to the second electrostatic discharge electrodes 42, and the electrostatic charges accumulated in the second touch electrode 21 can be further reduced. Exemplarily, as shown in fig. 9, fig. 9 is a further enlarged schematic view of an area a2 in fig. 1, and fig. 9 illustrates that two second electrostatic discharge electrodes 42 are disposed between the first touch electrode 11 and the second touch electrode 21.
For example, the first electrostatic discharge electrode 41 and the second electrostatic discharge electrode 42 may be alternately arranged in the embodiment of the present invention. As shown in fig. 9, the third connection portions 51 and the fourth connection portions 52 can be arranged as distributed as possible. Because the static charges at the positions of the third connection portion 51 and the fourth connection portion 52 are relatively concentrated, and the third connection portion 51 is electrically connected to the first touch electrode 11, and the fourth connection portion 52 is electrically connected to the second touch electrode 21, the static charge concentration regions with large areas can be prevented from being formed in the first touch electrode 11 and the second touch electrode 21 by arranging the third connection portion 51 and the fourth connection portion 52 in a dispersed manner in the embodiment of the present invention.
Alternatively, as shown in fig. 10, fig. 10 is another enlarged schematic view of the area a2 in fig. 1, and another schematic view, in an embodiment of the present invention, a second electrostatic discharge electrode 42 may be electrically connected to the second touch electrode 21 through at least two fourth connection portions 52 to increase a conductive path of static electricity led out from the second touch electrode 21, so as to further reduce the static charge accumulated in the second touch electrode 21. Fig. 10 illustrates two fourth connection portions 52 provided between the second touch electrode 21 and the second electrostatic discharge electrode 42.
For example, the fourth connection portion 52 and the second touch electrode 21 may be formed by using different materials according to the embodiment of the invention.
For example, in the embodiment of the invention, the resistivity of the fourth connection portion 52 may be smaller than the resistivity of the second touch electrode 21, so that static electricity on the second touch electrode 21 is more easily conducted away through the fourth connection portion 52.
Optionally, the material of the second touch electrode 21 may be formed by a transparent conductive oxide. The fourth connection portion 52 may be made of a metal material.
When manufacturing the touch display panel, the fourth connecting portion 52 and the second touch electrode 21 may be disposed in different layers according to the embodiment of the invention.
For example, in the embodiment of the invention, the fourth connection portion 52 may be located on the first touch conductive layer 401 shown in fig. 3. When the touch display panel is manufactured, the fourth connection portion 52 and the second connection portion 22 may be disposed in the same layer, so as to avoid the complexity of the manufacturing process of the touch display panel due to the introduction of the fourth connection portion 52. Moreover, by arranging the fourth connection portion 52 and the second connection portion 22 on the same layer, the fourth connection portion 52 can be prepared by using an existing film layer in the touch display panel, so that a new film layer is not added in the touch display panel, and the thickness of the touch display panel can be reduced.
As shown in fig. 11, fig. 11 is a further enlarged schematic view of the area a2 in fig. 1, and the display panel further includes a second dummy electrode 62. The orthographic projection of the second dummy electrode 62 on the plane of the display panel is located between the fourth projection 420 and the second projection 110. That is, the second dummy electrode 62 is located between the second electrostatic discharge electrode 42 and the first touch electrode 11 in a direction parallel to the plane of the touch display panel. In the embodiment of the present invention, the second dummy electrode 62 is in a floating state, i.e., the second dummy electrode 62 is not loaded with any electrical signal. The second electrostatic discharge electrode 42 is electrically connected to the second touch electrode 21, and both transmit the same signal. The second dummy electrode 62 is disposed to isolate the second electrostatic discharge electrode 42 from the first touch electrode 11, so that the second dummy electrode 62 can shield signal interference on the second electrostatic discharge electrode 42 and the first touch electrode 11. For example, the second dummy electrode 62 may be disposed at the same layer as the second touch electrode 21.
For example, the first dummy electrode 61 and the second dummy electrode 62 may be connected to each other.
Optionally, as shown in fig. 12, fig. 12 is a further enlarged schematic view of an area a2 in fig. 1, and a third dummy electrode 63 is further included between the second electrostatic discharge electrode 42 and the first electrostatic discharge electrode 41. Optionally, the third dummy electrode 63 may be connected to the first dummy electrode 61 and/or the second dummy electrode 62 to further shield the interference of the signals transmitted by the first touch electrode 11 and the second touch electrode 21.
For example, as shown in fig. 12, in the embodiment of the invention, the first touch electrode 11, the second touch electrode 21, the first electrostatic discharge electrode 41, the second electrostatic discharge electrode 42, the first dummy electrode 61, the second dummy electrode 62, and the third dummy electrode 63 may be disposed in the same layer, and the first electrostatic discharge electrode 41 and the second electrostatic discharge electrode 42 may be formed in an island structure that is not in contact with other structures disposed in the same layer.
For example, as shown in fig. 13, fig. 13 is another enlarged schematic view of the area a2 in fig. 1, and the first electrostatic discharge electrode 41 may have a shape close to the edge of the first touch electrode 11 as a broken line or a curved line; the first electrostatic discharge electrode 41 has a broken line or a curve shape near the edge of the second touch electrode 21. In the embodiment of the invention, the shape of the edge of the first electrostatic discharge electrode 41 is designed to be irregular such as a broken line or a curve, so that when external light enters the first electrostatic discharge electrode 41, due to the irregular shape, reflection angles of the light at different positions are different, thereby weakening the visibility of the edge of the first electrostatic discharge electrode 41 and improving the display effect of the touch display panel.
Alternatively, as shown in fig. 13, in the embodiment of the present invention, the shape of the edge of the second electrostatic discharge electrode 42 close to the first touch electrode 11 is a broken line or a curved line, and the shape of the edge of the second electrostatic discharge electrode 42 close to the second touch electrode 21 is a broken line or a curved line, so as to reduce the visibility of the edge of the second electrostatic discharge electrode 42.
As shown in fig. 14, fig. 14 is a schematic view of a display device according to an embodiment of the present invention, where the display device includes the display panel 1000. The specific structure of the 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. 14 is only a schematic illustration, and the display device may be any electronic device having a display function, such as a watch, a mobile phone, a tablet computer, a notebook computer, an electronic book, or a television.
In the embodiment of the invention, the third connecting part connected with the first touch electrode is arranged, and the third connecting part is equivalent to a tip structure protruding from the first touch electrode. According to the principle of point discharge, static electricity in the first touch electrode is more easily conducted and gathered to the third connecting portion. That is, the third connection portion is disposed such that at least a portion of static electricity in the first touch electrode is transmitted to the third connection portion, thereby reducing static electricity flowing in a direction of the first connection portion, and further reducing a possibility of an electrostatic discharge phenomenon occurring at positions of the first connection portion and the second connection portion.
Furthermore, in the embodiment of the invention, by providing the first electrostatic discharge electrode connected to the third connection portion, the static electricity accumulated in the third connection portion can be conducted to the first electrostatic discharge electrode. If the amount of static electricity in the first electrostatic discharge electrode is small, the part of static electricity can be stored in the first electrostatic discharge electrode. If the amount of static electricity in the first electrostatic discharge electrode is large, the static electricity can be discharged by damaging the first electrostatic discharge electrode, and the first touch electrode and the first connection portion can be prevented from being influenced.
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 (14)
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 first connecting part are crossed in an insulating way;
the orthographic projection of the first electrostatic discharge electrode on the plane where the display panel is located is a first projection, the orthographic projection of the first touch electrode on the plane where the display panel is located is a second projection, the orthographic projection of the second touch electrode on the plane where the display panel is located is a third projection, and the first projection is located between the second projection and the third projection;
and the first electrostatic discharge electrode is electrically connected with the first touch electrode through the third connecting part.
2. The touch display panel according to claim 1, further comprising:
a first dummy electrode, wherein an orthogonal projection of the first dummy electrode on a plane of the display panel is located between the first projection and the third projection.
3. The touch display panel of claim 1,
the resistivity of the third connecting part is smaller than that of the first touch electrode.
4. The touch display panel of claim 1,
the third connecting part and the first touch electrode are arranged in different layers.
5. The touch display panel of claim 1,
the first touch electrode, the second touch electrode and the first electrostatic discharge electrode are arranged in the same layer;
the second connecting part and the second touch electrode are arranged in different layers;
the third connecting part and the second connecting part are arranged on the same layer.
6. The touch display panel of claim 1,
the touch display panel further comprises a second electrostatic discharge electrode and a fourth connecting part;
the orthographic projection of the second electrostatic discharge electrode on the plane of the display panel is a fourth projection, and the fourth projection is positioned between the second projection and the third projection;
the second electrostatic discharge electrode is electrically connected with the second touch electrode through the fourth connecting part.
7. The touch display panel according to claim 6, further comprising:
a second dummy electrode, an orthogonal projection of the second dummy electrode on a plane of the display panel is between the fourth projection and the second projection.
8. The touch display panel of claim 6,
the resistivity of the fourth connecting part is smaller than that of the second touch electrode.
9. The touch display panel of claim 6,
the fourth connecting part and the second touch electrode are arranged in different layers.
10. The touch display panel according to claim 6, further comprising:
a third dummy electrode, wherein an orthogonal projection of the third dummy electrode on a plane of the display panel is located between the first projection and the fourth projection.
11. The touch display panel of claim 6,
a plurality of first electrostatic discharge electrodes and a plurality of second electrostatic discharge electrodes are arranged between the first touch electrode and the second touch electrode; the first electrostatic discharge electrodes and the second electrostatic discharge electrodes are alternately arranged.
12. The touch display panel of claim 1,
the shape of the edge of the first electrostatic discharge electrode close to the first touch electrode is a broken line or a curve;
the shape of the edge of the first electrostatic discharge electrode close to the second touch electrode is a broken line or a curve.
13. The touch display panel of claim 1,
the first electrostatic discharge electrode is electrically connected with the first touch electrode through at least two third connecting parts.
14. A touch display device comprising the touch display panel according to any one of claims 1 to 13.
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| CN113961099B (en) | 2023-10-31 |
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