CN113961099B - Touch display panel and touch display device - Google Patents
Touch display panel and touch display device Download PDFInfo
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- CN113961099B CN113961099B CN202111261208.5A CN202111261208A CN113961099B CN 113961099 B CN113961099 B CN 113961099B CN 202111261208 A CN202111261208 A CN 202111261208A CN 113961099 B CN113961099 B CN 113961099B
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- projection
- touch electrode
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- 230000003068 static effect Effects 0.000 claims description 65
- 230000005611 electricity Effects 0.000 claims description 61
- 238000010586 diagram Methods 0.000 description 7
- 239000000758 substrate Substances 0.000 description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 239000010408 film Substances 0.000 description 4
- 238000007667 floating Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
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- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 2
- 229910052733 gallium Inorganic materials 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000002096 quantum dot Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- -1 IZO) Chemical compound 0.000 description 1
- 241000699670 Mus sp. Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005421 electrostatic potential Methods 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
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- 230000001052 transient effect Effects 0.000 description 1
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Classifications
-
- 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
-
- 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 is used for improving the antistatic capability 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 in insulating intersection; orthographic projection of the first electrostatic discharge electrode on the plane of the display panel is a first projection, orthographic projection of the first touch electrode on the plane of the display panel is a second projection, orthographic projection of the second touch electrode on the plane of the display panel is a third projection, and the first projection is positioned 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
[ 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, improve the antistatic capability of the touch electrode, avoid the electrostatic shock of the touch electrode, and become the research focus of related researchers.
[ invention ]
In view of the above, the embodiment of the invention provides a touch display panel and a display device for improving 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 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 first connecting part are in insulating intersection;
the front projection of the first electrostatic discharge electrode on the plane of the display panel is a first projection, the front projection of the first touch electrode on the plane of the display panel is a second projection, the front projection of the second touch electrode on the plane of the display panel is a third projection, and the first projection is positioned 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.
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 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 tip discharge principle, static electricity in the first touch electrode is more easily conducted and accumulated to the third connecting part. That is, the third connection portion may enable at least a portion of static electricity in the first touch electrode to be transferred to the third connection portion, thereby reducing static electricity flowing in a direction where the first connection portion is located, and further reducing a possibility of an electrostatic discharge phenomenon at positions where the first connection portion and the second connection portion are located.
Furthermore, the embodiment of the invention can lead the static electricity accumulated in the third connecting part to be conducted to the first static electricity discharge electrode by arranging the first static electricity discharge electrode connected with the third connecting part. If the amount of static electricity in the first static electricity discharge electrode is small, the part of static electricity may be stored in the first static electricity discharge electrode. If the amount of static electricity in the first static electricity discharge electrode is large, the static electricity can be discharged by damaging the first static electricity discharge electrode, so that the first touch electrode and the first connecting part 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 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 an enlarged schematic view of the area A2 in FIG. 1;
FIG. 5 is another enlarged schematic view of area A2 of FIG. 1;
FIG. 6 is a further enlarged schematic view of area A2 of FIG. 1;
FIG. 7 is a further enlarged schematic view of area A2 of FIG. 1;
FIG. 8 is a further enlarged schematic view of area A2 of FIG. 1;
FIG. 9 is a further enlarged schematic view of area A2 of FIG. 1;
FIG. 10 is a further enlarged schematic view of area A2 of FIG. 1;
FIG. 11 is a further enlarged schematic view of area A2 of FIG. 1;
FIG. 12 is a further enlarged schematic view of area A2 of FIG. 1;
FIG. 13 is a further enlarged schematic view of area A2 of FIG. 1;
fig. 14 is a schematic diagram of a 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 the touch electrode units 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 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 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 first connection portion 12 and the first touch electrode 11 are arranged in the same layer. 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 second connection portion 22 and the first connection portion 12 are insulated from each other. 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 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 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 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 a 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 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 near the substrate 100, which is not illustrated in the drawings.
For example, when the touch display panel works, the first touch electrode 11 can be used as a touch sensing electrode, and the second touch electrode 21 can be used as a touch driving electrode; or, 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 present 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 works, 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 with a finger, the touch sensing signal output from the second touch electrode 21 is changed, thereby determining 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, the front projection of the first electrostatic discharge electrode 41 on the plane of the display panel is a first projection 410, the front projection of the first touch electrode 11 on the plane of the display panel is a second projection 110, and the front 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. During the conduction of static electricity, electrostatic discharge phenomenon easily occurs when passing through the region where two conductors overlap. In the process of conducting static electricity in the first touch electrode unit 1, electrostatic discharge easily occurs at the position because the first connection portion 12 is insulated from the second connection portion 22 while passing through the first connection portion 12. The electrostatic discharge may form a strong electric field and a transient large current, and even damage the insulating layer between the first connection portion 12 and the second connection portion 22 in severe cases, resulting in abnormal touch.
In the embodiment of the invention, the third connecting portion 51 connected with the first touch electrode 11 is provided, and the third connecting portion 51 is equivalent to a tip structure protruding from the first touch electrode 11. According to the tip discharge principle, static electricity in the first touch electrode 11 is more easily conducted and accumulated to the third connection portion 51. That is, the third connection portion 51 may be disposed such that at least a portion of static electricity in the first touch electrode 11 is transferred to the third connection portion 51, thereby reducing static electricity flowing in the direction of the first connection portion 12, and thus reducing the possibility of an electrostatic discharge phenomenon occurring at the positions of the first connection portion 12 and the second connection portion 22.
Further, the embodiment of the present invention can make static electricity accumulated in the third connection portion 51 be conducted 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 static electricity discharge electrode 41 is small, this part of static electricity may be stored in the first static electricity discharge electrode 41. If the amount of static electricity in the first static electricity discharge electrode 41 is large, the static electricity is discharged by striking the first static electricity discharge electrode 41, and the first touch electrode 11 and the first connection portion 12 can be prevented from being affected.
In particular, based on the above arrangement manner provided in the embodiment of the present invention, the length of the first touch electrode unit 1 may be set shorter, so as to be applied to small-sized intelligent wearable devices, such as watches, with higher requirements for electrostatic reliability. Compared with the large-size device, the small-size device has a smaller area, and the length of the corresponding first touch electrode unit 1 is set to be shorter, wherein the areas of the first touch electrode 11 and the first connection portion 12 are also smaller, so that in the related art, the maximum static electricity that the touch electrode in the small-size device can bear is limited, and the touch failure problem caused by static electricity damage is more likely to occur. That is, the demand for electrostatic reliability for small-sized devices may be higher. By adopting the arrangement mode provided by the embodiment of the invention, by adding the third connecting part 51 connected with the first touch electrode 11 and the first electrostatic discharge electrode 41, 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, in the embodiment of the present invention, a plurality of 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 may carry more electrostatic charges, so that more electrostatic charges may 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 may be further reduced. 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.
Optionally, as shown in fig. 6, fig. 6 is an enlarged schematic view of a region A2 in fig. 1, and the embodiment of the invention may also enable one first electrostatic discharge electrode 41 to be electrically connected to the first touch electrode 11 through at least two third connection portions 51, so as to increase the conduction path of the static electricity led out from the first touch electrode 11, thereby further reducing the static charge accumulated in the first touch electrode 11. In fig. 6, two third connection portions 51 are provided between the first touch electrode 11 and the first electrostatic discharge electrode 41 as an illustration.
For example, the third connection portion 51 and the first touch electrode 11 may be formed using different materials, respectively.
For example, the resistivity of the third connection portion 51 may be smaller than the resistivity of the first touch electrode 11, so that static electricity on the first touch electrode 11 is more easily conducted away through the third connection portion 51.
Optionally, the materials of the first touch electrode 11 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 third connection portion 51 may be made of a metal material.
In the preparation of the touch display panel, the third connection portion 51 and the first touch electrode 11 may be disposed in different layers.
For example, the third connection portion 51 may be located on the first touch conductive layer 401 shown in fig. 3 according to the embodiment of the present invention. In the process of manufacturing the touch display panel, the third connection portion 51 and the second connection portion 22 may be arranged in the same layer, so as to avoid the complexity of the manufacturing process of the touch display panel from being increased by the introduction of the third connection portion 51. Moreover, by arranging the third connection portion 51 and the second connection portion 22 in the same layer, the third connection portion 51 can be prepared by using the existing film layer in the touch display panel, so that a new film layer is prevented from being added in the touch display panel, and the thickness of the touch display panel can be reduced.
As shown in fig. 7, fig. 7 is a schematic enlarged view of a region 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 (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 may isolate the first electrostatic discharge electrode 41 from the second touch electrode 21, so that the first dummy electrode 61 plays a role of shielding 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 in the same layer as the first touch electrode 11.
Optionally, as shown in fig. 8, fig. 8 is a further enlarged schematic view of a region A2 in fig. 1, and the touch display panel further includes a second electrostatic discharge electrode 42 and a fourth connection portion 52; the orthographic 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 connecting portion 52 connected with the second touch electrode 21 is provided, and the fourth connecting portion 52 is equivalent to a tip structure protruding from the second touch electrode 21. According to the tip discharge principle, static electricity in the second touch electrode 21 is more easily conducted and accumulated to the fourth connection portion 52. That is, the fourth connection portion 52 may be disposed such that at least a portion of static electricity in the second touch electrode 21 is transferred to the fourth connection portion 52, thereby reducing static electricity flowing in the direction of the second connection portion 22, and thus reducing the possibility of an electrostatic discharge phenomenon occurring at the positions of the first connection portion 12 and the second connection portion 22.
Further, the embodiment of the present invention can make static electricity accumulated in the fourth connection part 52 be conducted to the second static electricity discharge electrode 42 by providing the second static electricity discharge electrode 42 connected to the fourth connection part 52. If the amount of static electricity in the second electrostatic discharge electrode 42 is small, this part of static electricity may be stored in the second electrostatic discharge electrode 42. If the amount of static electricity in the second static electricity discharge electrode 42 is large, the static electricity is discharged by damaging the second static electricity discharge electrode 42, so as to avoid affecting the second touch electrode 21 and the second connection portion 22.
For example, in the embodiment of the present invention, a plurality of 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 may carry more electrostatic charges, and thus more electrostatic charges may be transferred from the second touch electrode 21 to the second electrostatic discharge electrodes 42, so as to further reduce the electrostatic charges accumulated in the second touch electrode 21. As shown in fig. 9, fig. 9 is a further enlarged schematic view of the area A2 in fig. 1, and in fig. 9, two second electrostatic discharge electrodes 42 are disposed between the first touch electrode 11 and the second touch electrode 21 as an illustration.
Illustratively, embodiments of the present invention may have the first electrostatic discharge electrodes 41 and the second electrostatic discharge electrodes 42 alternately arranged. As shown in fig. 9, the third connecting portion 51 and the fourth connecting portion 52 can be provided as dispersedly as possible. Because the static charges at the positions of the third connecting portion 51 and the fourth connecting portion 52 are relatively concentrated, and the third connecting portion 51 is electrically connected with the first touch electrode 11, and the fourth connecting portion 52 is electrically connected with the second touch electrode 21, the third connecting portion 51 and the fourth connecting portion 52 are arranged in a dispersed manner, so that a static charge concentration area with a larger area can be prevented from being formed in the first touch electrode 11 and the second touch electrode 21.
Alternatively, as shown in fig. 10, fig. 10 is an enlarged schematic diagram of the area A2 in fig. 1, and another schematic diagram is shown, and in this embodiment of the 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, so as to increase the conductive path of the static electricity led out from the second touch electrode 21, thereby further reducing the static charge accumulated in the second touch electrode 21. In fig. 10, two fourth connection portions 52 are provided between the second touch electrode 21 and the second electrostatic discharge electrode 42 as an illustration.
For example, the fourth connection part 52 and the second touch electrode 21 may be formed using different materials, respectively.
For example, the resistivity of the fourth connection portion 52 may be smaller than that 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.
Alternatively, the material of the second touch electrode 21 may be formed by transparent conductive oxide. The fourth connection portion 52 may be made of a metal material.
In the preparation of the touch display panel, the fourth connection portion 52 and the second touch electrode 21 may be disposed in different layers.
For example, the fourth connection portion 52 may be located on the first touch conductive layer 401 shown in fig. 3 according to the embodiment of the present invention. In the process of manufacturing the touch display panel, the fourth connection portion 52 and the second connection portion 22 may be arranged in the same layer, so as to avoid the complexity of the manufacturing process of the touch display panel from being increased by the introduction of the fourth connection portion 52. Moreover, by arranging the fourth connection portion 52 and the second connection portion 22 in the same layer, the existing film layer in the touch display panel can be used to prepare the fourth connection portion 52, so that a new film layer is prevented from being 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 a region 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 (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 may isolate the second electrostatic discharge electrode 42 from the first touch electrode 11, so that the second dummy electrode 62 plays a role of shielding 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 in the same layer as the second touch electrode 21.
For example, the first dummy electrode 61 and the second dummy electrode 62 described above may be connected to each other.
Optionally, as shown in fig. 12, fig. 12 is a further enlarged schematic view of a region 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.
As shown in fig. 12, 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 into island structures not contacting other structures disposed in the same layer.
As shown in fig. 13, fig. 13 is a schematic enlarged view of a region A2 in fig. 1, and the embodiment of the present invention may make the edge of the first electrostatic discharge electrode 41 near the first touch electrode 11 have a shape of a broken line or a curved line; the edge of the first electrostatic discharge electrode 41 near the second touch electrode 21 is shaped as a fold line or a curve. 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 fold line or a curve, so that when external light is incident to the first electrostatic discharge electrode 41, the reflection angles of the external light at different positions are different due to the irregular shape, 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, the shape of the edge of the second electrostatic discharge electrode 42 near the first touch electrode 11 may be a broken line or a curved line, and the shape of the edge of the second electrostatic discharge electrode 42 near the second touch electrode 21 may be a broken line or a curved line, so as to reduce the visibility of the edge of the second electrostatic discharge electrode 42.
The embodiment of the invention further provides a touch display device, as shown in fig. 14, fig. 14 is a schematic diagram of a display device according to the embodiment of the invention, where the display device includes the display panel 1000 described above. The specific structure of the display panel 1000 has been described in detail in the above embodiments, and will not be described here again. Of course, the display device shown in fig. 14 is only a schematic illustration, and the display device may be any electronic apparatus having a display function, such as a wristwatch, a mobile phone, a tablet computer, a notebook computer, an electronic book, or a television.
According to 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 tip discharge principle, static electricity in the first touch electrode is more easily conducted and accumulated to the third connecting part. That is, the third connection portion may enable at least a portion of static electricity in the first touch electrode to be transferred to the third connection portion, thereby reducing static electricity flowing in a direction where the first connection portion is located, and further reducing a possibility of an electrostatic discharge phenomenon at positions where the first connection portion and the second connection portion are located.
Furthermore, the embodiment of the invention can lead the static electricity accumulated in the third connecting part to be conducted to the first static electricity discharge electrode by arranging the first static electricity discharge electrode connected with the third connecting part. If the amount of static electricity in the first static electricity discharge electrode is small, the part of static electricity may be stored in the first static electricity discharge electrode. If the amount of static electricity in the first static electricity discharge electrode is large, the static electricity can be discharged by damaging the first static electricity discharge electrode, so that the first touch electrode and the first connecting part can be prevented from being influenced.
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 (14)
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 first connecting part are in insulating intersection;
the front projection of the first electrostatic discharge electrode on the plane of the display panel is a first projection, the front projection of the first touch electrode on the plane of the display panel is a second projection, the front projection of the second touch electrode on the plane of the display panel is a third projection, and the first projection is positioned 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 of claim 1, further comprising:
and the orthographic projection of the first dummy electrode on the plane of the display panel is positioned between the first projection and the third projection.
3. The touch display panel of claim 1, wherein,
the resistivity of the third connection part is smaller than that of the first touch electrode.
4. The touch display panel of claim 1, wherein,
the third connecting part and the first touch electrode are arranged in different layers.
5. The touch display panel of claim 1, wherein,
the first touch electrode, the second touch electrode and the first static electricity discharge electrode are arranged on 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, wherein,
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 of claim 6, further comprising:
and the orthographic projection of the second dummy electrode on the plane of the display panel is positioned between the fourth projection and the second projection.
8. The touch display panel of claim 6, wherein,
the resistivity of the fourth connecting part is smaller than that of the second touch electrode.
9. The touch display panel of claim 6, wherein,
the fourth connecting part and the second touch electrode are arranged in different layers.
10. The touch display panel of claim 6, further comprising:
and the orthographic projection of the third dummy electrode on the plane of the display panel is positioned between the first projection and the fourth projection.
11. The touch display panel of claim 6, wherein,
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, wherein,
the shape of the edge of the first electrostatic discharge electrode, which is close to the first touch electrode, is a broken line or a curve;
the shape of the edge of the first electrostatic discharge electrode, which is close to the second touch electrode, is a broken line or a curve.
13. The touch display panel of claim 1, wherein,
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 of any one of claims 1-13.
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| CN113961099A (en) | 2022-01-21 |
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