Touch display panel and touch display device

Abstract

The invention discloses a touch display panel and a touch display device, and relates to the technical field of touch display. The touch display panel comprises a substrate, a driving device layer and a light-emitting device layer. A cathode layer in the light emitting device layer includes a first cathode pattern group and a second cathode pattern group. A plurality of first cathode patterns included in the first cathode pattern group may be connected by a plurality of first connection portions, and a plurality of second cathode patterns included in the second cathode pattern group may be connected by a plurality of second connection portions. Therefore, the first cathode pattern group and the second cathode pattern group can be used as different electromagnetic electrodes for electromagnetic touch control, so that a magnetic field is generated between the first cathode pattern group and the second cathode pattern group to realize an electromagnetic touch control function. Namely, in the embodiment of the invention, the electromagnetic touch control can be integrated in the touch control display panel, the external electromagnetic touch control is not needed, and the light and thin touch control display panel can be realized.

Description

Technical Field

[0001] The present application relates to the field of touch display technology, and in particular to a touch display panel and a touch display device. Background Art

[0002] The touch display device includes a display panel and a touch module, and the touch module is used to realize the touch function.

[0003] In the related art, since electromagnetic touch can realize the original handwriting function, it can be widely used in the fields of computer-aided drawing and painting production. At present, the touch display device includes an electromagnetic touch module, which can realize the input of information.

[0004] However, when the electromagnetic touch module is applied to the touch display device, it is usually in an external form. However, the external electromagnetic touch module increases the thickness of the touch display device, which is not conducive to making the display device thinner and lighter. Summary of the invention

[0005] The present application provides a touch display panel and a touch display device, which can solve the problem in the related art that the display device is not conducive to being light and thin. The technical solution is as follows:

[0006] In one aspect, a touch display panel is provided, the touch display panel comprising:

[0007] A base substrate, the base substrate comprising a display area and a peripheral area surrounding the display area;

[0008] A driving device layer, the driving device layer is located on one side of the base substrate, the driving device layer includes a plurality of conductive layers, the plurality of conductive layers include a plurality of first connecting portions and a plurality of second connecting portions, the first connecting portions and the second connecting portions are insulated from each other;

[0009] and a light-emitting device layer, the light-emitting device layer is located on one side of the base substrate, the light-emitting device layer includes an anode layer, a light-emitting layer and a cathode layer, the anode layer, the light-emitting layer and the cathode layer are used to form a plurality of light-emitting units, and the light-emitting units are used to emit light;

[0010] Wherein, the cathode layer includes a plurality of first cathode pattern groups arranged along a first direction, and a plurality of second cathode pattern groups arranged along a second direction, each of the first cathode pattern groups includes a plurality of first cathode patterns arranged along the second direction, each of the second cathode pattern groups includes a plurality of second cathode patterns arranged along the first direction, and a first cathode pattern in the first cathode pattern group is provided between two adjacent second cathode patterns among the plurality of second cathode patterns in each of the second cathode pattern groups; the plurality of first cathode patterns in each of the first cathode pattern groups are connected by the plurality of first connecting parts, and the first cathode pattern group is a first electromagnetic electrode, the plurality of second cathode patterns in each of the second cathode pattern groups are connected by the plurality of second connecting parts, and the second cathode pattern group is a second electromagnetic electrode.

[0011] Optionally, the touch display panel further includes: a plurality of signal transmission lines, the plurality of signal transmission lines including: a plurality of first signal transmission lines and a plurality of second signal transmission lines;

[0012] Each of the first signal transmission lines is connected to a first end of the first cathode pattern group, and the first end of each of the first cathode pattern groups is connected to at least one first signal transmission line, and the first signal transmission line is used to transmit a first signal to the first cathode pattern group;

[0013] Each of the second signal transmission lines is connected to a first end of the second cathode pattern group, and the first end of each of the second cathode pattern groups is connected to at least one second signal transmission line, and the second signal transmission line is used to transmit a second signal to the second cathode pattern group;

[0014] Wherein, under the action of the first signal and the second signal, a magnetic field is generated between the first cathode pattern group and the second cathode pattern group.

[0015] Optionally, the touch display panel further includes: a third connecting portion and a fourth connecting portion;

[0016] The third electrode portion is connected to the second ends of the plurality of first cathode pattern groups, and the fourth connection portion is connected to the second ends of the plurality of second cathode pattern groups.

[0017] Optionally, the touch display panel further includes: a driving power line located in the peripheral area;

[0018] At least a portion of the first cathode pattern group is located in the peripheral area, and a portion of the first cathode pattern group located in the peripheral area is connected to the driving power line;

[0019] At least a portion of the second cathode pattern group is located in the peripheral area, and a portion of the second cathode pattern group located in the peripheral area is connected to the driving power line;

[0020] The driving power line provides driving power signals for the first cathode pattern group and the second cathode pattern group in the first stage, and the signal transmission line provides touch signals for the first cathode pattern group and the second cathode pattern group in the second stage, and the first stage and the second stage are different.

[0021] Optionally, the driving device layer includes: a buffer layer, an active layer, a first gate insulating layer, a first gate layer, a second gate insulating layer, a second gate layer, an interlayer dielectric layer, a first source and drain layer, a passivation layer, a first planarization layer, a second source and drain layer and a second planarization layer;

[0022] The multi-layer conductive layer includes the first gate layer, the second gate layer, the first source-drain electrode layer and the second source-drain electrode layer;

[0023] The first connecting portion and the second connecting portion are located at two different layers among the first gate layer, the second gate layer, the first source-drain layer and the second source-drain layer.

[0024] Optionally, the light-emitting device layer further includes a pixel defining layer located between the anode layer and the light-emitting layer;

[0025] The anode layer includes an anode pattern of each of the plurality of light-emitting units, the pixel defining layer includes a plurality of light-emitting openings, each of the light-emitting openings exposes at least a portion of the anode pattern of one of the light-emitting units, the light-emitting layer is located in the light-emitting opening and connected to the anode pattern, and the cathode pattern in the cathode layer is connected to the light-emitting layer;

[0026] The anode layer also includes a plurality of dummy patterns, the dummy patterns and the anode patterns are arranged at intervals, the pixel defining layer includes a plurality of connection openings, each of the connection openings exposes at least a portion of the dummy pattern, the light-emitting layer is not located in the connection opening, the cathode pattern in the cathode layer is connected to the dummy pattern, and the dummy pattern is used to connect the first connection portion or the second connection portion.

[0027] Optionally, the plurality of light-emitting units include: a plurality of light-emitting unit groups, at least one of the light-emitting unit groups includes at least one first light-emitting unit, at least one second light-emitting unit and at least one third light-emitting unit, and the light-emitting colors of the first light-emitting unit, the light-emitting colors of the second light-emitting unit and the light-emitting colors of the third light-emitting unit are different from each other;

[0028] The connection position between each cathode pattern in the cathode layer and the dummy pattern is an overlap region, and the orthographic projection of the overlap region on the base substrate is located between the orthographic projections of two adjacent light emitting unit groups on the base substrate.

[0029] Optionally, the orthographic projection of each cathode pattern on the base substrate covers the orthographic projections of the plurality of light emitting unit groups on the base substrate, and covers the area between any adjacent light emitting units in the plurality of light emitting unit groups.

[0030] Optionally, the plurality of light emitting unit groups covered by each cathode pattern include m groups of light emitting unit groups arranged along the first direction, and include n groups of light emitting unit groups arranged along the second direction;

[0031] Any adjacent two of the second cathode patterns in the second cathode pattern group are connected via n second connecting portions, and any adjacent two of the first cathode patterns in the first cathode pattern group are connected via m first connecting portions.

[0032] Optionally, each of the plurality of first signal transmission lines included in the touch display panel includes m first sub-signal transmission lines, and the first ends of the m first sub-signal transmission lines are connected, and the second ends of the m first sub-signal transmission lines are connected to different regions of a first cathode pattern in the first cathode pattern group;

[0033] Each of the multiple second signal transmission lines included in the touch display panel includes n second sub-signal transmission lines, the first ends of the n second sub-signal transmission lines are connected, and the second ends of the n second sub-signal transmission lines are connected to different areas of a second cathode pattern in the second cathode pattern group.

[0034] Optionally, the light emitting device layer further includes: an isolation column, the isolation column including a first isolation portion, a second isolation portion and a third isolation portion stacked in a direction away from the base substrate;

[0035] The orthographic projection of the second isolation portion on the base substrate is located within the orthographic projection of the first isolation portion on the base substrate, the third isolation portion includes an edge portion extending beyond the second isolation portion, the connection opening at least exposes the edge portion, and adjacent cathode patterns are separated by the isolation column.

[0036] Optionally, the touch display panel includes a touch functional film layer located on a side of the light emitting device layer away from the base substrate;

[0037] The touch function film layer comprises: a touch buffer layer, a first touch conductive layer, a touch insulating layer, and a second touch conductive layer stacked in a direction away from the base substrate;

[0038] The first touch conductive layer and the second touch conductive layer constitute a plurality of first touch electrodes and a plurality of second touch electrodes, the plurality of first touch electrodes are arranged along the first direction, and each of the first touch electrodes extends along the second direction, the plurality of second touch electrodes are arranged along the second direction, and each of the second touch electrodes extends along the first direction; an orthographic projection of the first touch electrode on the base substrate overlaps with an orthographic projection of the second touch electrode on the base substrate, and the first touch electrode and the second touch electrode are insulated from each other.

[0039] Optionally, edges of orthographic projections of some cathode patterns among the plurality of first cathode patterns and the plurality of second cathode patterns on the base substrate are located on a side where the orthographic projections of the first touch electrode and the second touch electrode on the base substrate are away from the display area.

[0040] Optionally, the first touch electrode includes a plurality of bridging electrodes located in the first touch conductive layer, and a plurality of main electrodes located in the second touch conductive layer, and the plurality of main electrodes are arranged along the second direction; the second touch electrode is located in the second touch conductive layer;

[0041] The orthographic projection of the bridging electrode on the base substrate overlaps with the orthographic projection of the second touch electrode on the base substrate, and the main electrode and the second touch electrode are arranged at intervals; adjacent main electrodes among the multiple main electrodes of the first touch electrode are connected by at least one of the bridging electrodes.

[0042] Optionally, the touch display panel further includes: a plurality of first touch signal lines and a plurality of second touch signal lines;

[0043] The plurality of first touch signal lines are connected to the plurality of first touch electrodes in a one-to-one correspondence, and the plurality of second touch signal lines are connected to the plurality of second touch electrodes in a one-to-one correspondence.

[0044] On the other hand, a touch display device is provided, the touch display device comprising: a power supply component, and the touch display panel as described in the above aspect;

[0045] The power supply component is connected to the touch display panel, and the power supply component is used to supply power to the touch display panel.

[0046] The beneficial effects of the technical solution provided by this application include at least:

[0047] The present application provides a touch display panel and a touch display device, wherein the touch display panel includes a substrate, a driving device layer, and a light-emitting device layer. The cathode layer in the light-emitting device layer includes a first cathode pattern group and a second cathode pattern group. The multiple first cathode patterns included in the first cathode pattern group can be connected by multiple first connecting parts, and the multiple second cathode patterns included in the second cathode pattern group can be connected by multiple second connecting parts. In this way, the first cathode pattern group and the second cathode pattern group can be used as different electromagnetic electrodes for electromagnetic touch, thereby generating a magnetic field between the first cathode pattern group and the second cathode pattern group to realize the function of electromagnetic touch. That is, in the embodiment of the present application, the electromagnetic touch can be integrated into the touch display panel without the need for an external electromagnetic touch, which is conducive to realizing the thinness of the touch display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0049] Figure 1 is a partial cross-sectional schematic diagram of a touch display panel provided in an embodiment of the present application;

[0050] Figure 2 is a partial cross-sectional schematic diagram of another touch display panel provided in an embodiment of the present application;

[0051] Figure 3 is a top view of a touch display panel provided in an embodiment of the present application;

[0052] Figure 4 is a schematic diagram of a first cathode pattern group and a second cathode pattern group provided in an embodiment of the present application;

[0053] Figure 5 is a schematic diagram of a third connecting portion provided in an embodiment of the present application;

[0054] Figure 6 is a schematic diagram of a fourth connecting portion provided in an embodiment of the present application;

[0055] Figure 7 is a top view of another touch display panel provided in an embodiment of the present application;

[0056] Figure 8 It is a schematic diagram of a first stage and a second stage provided in an embodiment of the present application;

[0057] Fig. 9is a schematic diagram of a light-emitting unit group provided in an embodiment of the present application;

[0058] Fig.10 is a schematic diagram of a first cathode pattern and a light-emitting unit group provided in an embodiment of the present application;

[0059] Fig.11 is a schematic diagram of a second cathode pattern and a light-emitting unit group provided in an embodiment of the present application;

[0060] Fig.12 is a schematic diagram of a second cathode pattern and a second connecting portion provided in an embodiment of the present application;

[0061] Fig.13 is a schematic diagram of a first cathode pattern and a first connecting portion provided in an embodiment of the present application;

[0062] Fig.14 is a schematic diagram of a first cathode pattern and a first signal transmission line provided in an embodiment of the present application;

[0063] Fig.15 is a schematic diagram of a second cathode pattern and a second signal transmission line provided in an embodiment of the present application;

[0064] Fig.16 This is a schematic diagram of an isolation column separating a cathode layer provided in an embodiment of the present application;

[0065] Fig.17 is a top view of a touch display panel provided in an embodiment of the present application;

[0066] Fig.18 It is a structural schematic diagram of a touch display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0067] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0068] Figure 1 It is a partial cross-sectional schematic diagram of a touch display panel provided in an embodiment of the present application. Figure 2 It is a partial cross-sectional schematic diagram of another touch display panel provided in an embodiment of the present application. Figure 3 FIG. 1 is a top view of a touch display panel provided in an embodiment of the present application. Figures 1 to 3 The touch display panel 100 includes: a base substrate 101 , a driving device layer 102 , and a light emitting device layer 103 .

[0069] The base substrate 101 includes a display area 101a and a peripheral area 101b surrounding the display area 101a. The driving device layer 102 is located on one side of the base substrate 101, and the driving device layer 102 includes a plurality of conductive layers. The multi-layer conductive layer includes a plurality of first connecting parts 1021 and a plurality of second connecting parts 1022. The first connecting parts 1021 and the second connecting parts 1022 are insulated from each other. For example, the first connecting part 1021 and the second connecting part 1022 are located in different conductive layers, or the first connecting part 1021 and the second connecting part 1022 are located in the same conductive layer and are spaced apart.

[0070] The light emitting device layer 103 is located on one side of the base substrate 101, for example, the light emitting device layer 103 is located on the side of the driving device layer 102 away from the base substrate 101. The light emitting device layer 103 includes an anode layer (anode) n1, a light emitting layer (EL) n2 and a cathode layer (cathode) n3. The anode layer n1, the light emitting layer n2 and the cathode layer n3 are used to form a plurality of light emitting units 1031, and the light emitting units 1031 are used to emit light. Optionally, the light emitting unit 1031 can be an organic light emitting diode (OLED).

[0071] refer to Figure 3 to Figure 4 , the cathode layer n3 includes a plurality of first cathode pattern groups n31 arranged along the first direction X, and a plurality of second cathode pattern groups n32 arranged along the second direction Y. Each first cathode pattern group n31 includes a plurality of first cathode patterns n311 arranged along the second direction Y, and each second cathode pattern group n32 includes a plurality of second cathode patterns n321 arranged along the first direction X. A first cathode pattern n311 in the first cathode pattern group n31 is provided between two adjacent second cathode patterns n321 in the plurality of second cathode patterns n321 in each second cathode pattern group n32. The plurality of first cathode patterns n311 in each first cathode pattern group n31 are connected by a plurality of first connecting portions 1021, and the first cathode pattern group n31 is a first electromagnetic electrode. The plurality of second cathode patterns n321 in each second cathode pattern group n32 are connected by a plurality of second connecting portions 1022, and the second cathode pattern group n32 is a second electromagnetic electrode. The first cathode pattern group n31 and the second cathode pattern group n32 can be used to generate a magnetic field.

[0072] In the embodiment of the present application, the first direction X intersects with the second direction Y. Optionally, the first direction X is perpendicular to the second direction Y. For example, the first direction X may be a pixel row direction of the touch display panel 100 , and the second direction Y may be a pixel column direction of the touch display panel 100 .

[0073] In order to realize the electromagnetic touch (EMR) function, in addition to setting the first electromagnetic electrode and the second electromagnetic electrode in the touch display panel 100, it is also necessary to transmit an electromagnetic signal through an electromagnetic pen so that the electromagnetic pen interacts with the first electromagnetic electrode and the second electromagnetic electrode. When the electromagnetic pen is close to the touch display panel 100, the touch display panel 100 will sense the electromagnetic signal of the electromagnetic pen, and the touch display panel 100 can calculate the touch position of the electromagnetic pen according to the change of magnetic flux, thereby realizing the electromagnetic touch function.

[0074] In the embodiment of the present application, the cathode layer n3 in the light emitting device layer 103 can be divided into a first cathode pattern group n31 and a second cathode pattern group n32, the first cathode pattern group n31 includes a plurality of first cathode patterns n311, and the second cathode pattern group n32 includes a plurality of second cathode patterns n321. The plurality of first cathode patterns n311 in the first cathode pattern group n31 can be connected by a plurality of first connecting portions 1021, and the plurality of second cathode patterns n321 in the second cathode pattern group n32 can be connected by a plurality of second connecting portions 1022. Thus, the first cathode pattern group n31 and the second cathode pattern group n32 can be used as different electromagnetic electrodes for electromagnetic touch control, thereby generating a magnetic field between the first cathode pattern group n31 and the second cathode pattern group n32 to realize the function of electromagnetic touch control. That is, in the embodiment of the present application, the electromagnetic touch control can be integrated into the touch display panel 100, without the need for an external electromagnetic touch control, which is conducive to realizing the thinness and flexibility of the touch display panel 100. Furthermore, connecting the cathode layer and the connecting portion in the conductive layer can effectively reduce the resistance of the electromagnetic electrode and ensure the electromagnetic touch performance.

[0075] In summary, an embodiment of the present application provides a touch display panel, which includes a substrate, a driving device layer and a light-emitting device layer. The cathode layer in the light-emitting device layer includes a first cathode pattern group and a second cathode pattern group. The multiple first cathode patterns included in the first cathode pattern group can be connected by multiple first connecting parts, and the multiple second cathode patterns included in the second cathode pattern group can be connected by multiple second connecting parts. In this way, the first cathode pattern group and the second cathode pattern group can be used as different electromagnetic electrodes for electromagnetic touch, thereby generating a magnetic field between the first cathode pattern group and the second cathode pattern group to realize the function of electromagnetic touch. That is, in the embodiment of the present application, the electromagnetic touch can be integrated into the touch display panel without the need for an external electromagnetic touch, which is conducive to realizing the thinness of the touch display panel.

[0076] It should be noted that Figure 2 The second connection parts 1022 marked on the left and right sides are actually the same second connection part. Figure 2In order to illustrate a complete thin film transistor in the cross section shown, the second connection portions 1022 marked on the left and right sides are drawn disconnected. In fact, the second connection portions 1022 marked on the left and right sides are connected as a whole in other cross sections.

[0077] Optionally, the base substrate 101 may be a glass substrate or a flexible substrate. For example, the base substrate 101 may be made of polyimide (PI).

[0078] refer to Figure 3 It can be seen that the touch display panel 100 further includes: a plurality of signal transmission lines 104. The plurality of signal transmission lines 104 include: a plurality of first signal transmission lines 104a and a plurality of second signal transmission lines 104b. Each first signal transmission line 104a is connected to a first end of a first cathode pattern group n31, and a first end of each first cathode pattern group n31 is connected to at least one first signal transmission line 104a. The first signal transmission line 104a is used to transmit a first signal to the first cathode pattern group n31.

[0079] Optionally, each first cathode pattern group n31 may be connected to a plurality of first signal transmission lines 104a, and the plurality of first signal transmission lines 104a may transmit the first signal to the first cathode pattern n311.

[0080] Each second signal transmission line 104b is connected to a first end of a second cathode pattern group n32, and a first end of each second cathode pattern group n32 is connected to at least one second signal transmission line 104b. The second signal transmission line 104b is used to transmit a second signal to the second cathode pattern group n32.

[0081] Optionally, each second cathode pattern group n32 may be connected to a plurality of second signal transmission lines 104b, and the plurality of second signal transmission lines 104b may transmit the second signal to the second cathode pattern n321.

[0082] In the embodiment of the present application, during the touch detection process, the first signal transmission line 104a transmits the first signal to the first cathode pattern group n31, and the second signal transmission line 104b transmits the second signal to the second cathode pattern n321. Thus, under the action of the first signal and the second signal, a magnetic field can be generated between the first cathode pattern group n31 and the second cathode pattern group n32.

[0083] In the examples of this application, refer to Figure 3The multi-layer conductive layer of the touch display panel 100 further includes: a third connection portion 1023 and a fourth connection portion 1024. The third connection portion 1023 is connected to the second ends of the plurality of first cathode pattern groups n31. The fourth connection portion 1024 is connected to the second ends of the plurality of second cathode pattern groups n32. That is, the plurality of first cathode pattern groups n31 can be connected to form a loop through the third connection portion 1023, and the plurality of second cathode pattern groups n32 can be connected to form a loop through the fourth connection portion 1024.

[0084] Optionally, the orthographic projection of the third connection portion 1023 on the base substrate 101 may be in a comb shape. Figure 5 The third connection part 1023 includes a first main body portion 10231 and a plurality of first branch portions 10232. The first main body portion 10231 may extend in a first direction X, the plurality of first branch portions 10232 may extend in a second direction Y, and one end of the plurality of first branch portions 10232 may be connected to the first main body portion 10231. Each of the plurality of first branch portions 10232 may be connected to a first cathode pattern group n31, and each first cathode pattern group n31 may be connected to at least one first branch portion 10232.

[0085] Optional, reference Figure 6 , the orthographic projection of the fourth connection portion 1024 on the base substrate 101 may be comb-shaped. The fourth connection portion 1024 includes a second main body portion 10241 and a plurality of second branch portions 10242. The extension direction of the second main body portion 10241 may be the second direction Y, the extension direction of the plurality of second branch portions 10242 may be the first direction X, and one end of the plurality of second branch portions 10242 may be connected to the second main body portion 10241. Each second branch portion 10242 of the plurality of second branch portions 10242 may be connected to one second cathode pattern group n32, and each second cathode pattern group n32 may be connected to at least one second branch portion 10242.

[0086] Figure 7 FIG. 1 is a top view of another touch display panel provided in an embodiment of the present application. Figure 7 The touch display panel 100 further includes: a driving power line 105 located in the peripheral area 101b.

[0087] At least part of the first cathode pattern group n31 is located in the peripheral area 101b, and the part of the first cathode pattern group n31 located in the peripheral area 101b can be connected to the driving power line 105. At least part of the second cathode pattern group n32 is located in the peripheral area 101b, and the part of the second cathode pattern group n32 located in the peripheral area 101b is connected to the driving power line 105.

[0088] Optionally, the driving power line 105 may be a negative power line (or referred to as a VSS line). The driving power line 105 may be used to provide a VSS signal to a plurality of first cathode patterns n311 in the first cathode pattern group n31 and a plurality of second cathode patterns n321 in the second cathode pattern group n32, so that the first cathode patterns n311 and the second cathode patterns n321 can serve as cathodes of the light-emitting unit 1031 so that the light-emitting unit 1031 can emit light.

[0089] In the embodiment of the present application, since the cathode layer n3 in the light-emitting device layer 103 not only serves as an electromagnetic electrode to realize the electromagnetic touch function, but also serves as a cathode to realize the light-emitting unit 1031 to emit light, the cathode layer n3 can be provided with VSS signals and touch signals in time periods.

[0090] Optional, reference Figure 8 The driving power line 105 provides the driving power signal (VSS signal) to the first cathode pattern group n31 and the second cathode pattern group n32 in the first stage t1, and the signal transmission line provides the touch signal to the first cathode pattern group n31 and the second cathode pattern group n32 in the second stage t2. The first stage t1 and the second stage t2 are different. Figure 8 The first stage t1 and the second stage t2 implement display and touch control alternately.

[0091] In the examples of this application, refer to Figure 1 and Figure 2 The driving device layer 102 includes: a buffer layer (buffer) m1, a barrier layer (barrier) m2, an active layer (poly) m3, a first gate insulating layer (gate insulator, GI1) m4, a first gate layer (gate1) m5, a second gate insulating layer (GI2) m6, a second gate layer (gate2) m7, an inter-level dielectric layer (inter level dielectric, ILD) m8, a first source and drain layer (SD1) m9, a passivation layer (passivation layer, PVX) m10, a first planarization layer (planarization layer, PLN1) m11, a second source and drain layer (SD2) m12 and a second planarization layer (PLN2) m13.

[0092] The multi-layer conductive layer includes a first gate layer m5, a second gate layer m7, a first source-drain layer m9 and a second source-drain layer m12. The first connecting portion 1021 and the second connecting portion 1022 may be located at two different layers among the first gate layer m5, the second gate layer m7, the first source-drain layer m9 and the second source-drain layer m12.

[0093] Optional, reference Figure 1 and Figure 2 , the first connection portion 1021 may be located at the second source-drain electrode layer m12, and the second connection portion 1022 may be located at the first source-drain electrode layer m9.

[0094] In the embodiment of the present application, the driving device layer 102 may include a pixel circuit 1025, and the pixel circuit 1025 may be connected to the light-emitting unit 1031 to provide a driving signal to the light-emitting unit 1031. The light-emitting unit 1031 may emit light under the action of the driving signal provided by the pixel circuit 1025. Among them, the pixel circuit 1025 may include a plurality of thin film transistors (TFT) and at least one storage capacitor (Cst). The pixel circuit 1025 and the light-emitting unit 1031 may constitute a light-emitting pixel.

[0095] The active layer m3 may be a polysilicon layer (P-Si). The active layer m3 includes a plurality of active patterns of thin film transistors, and the active patterns include a source region and a drain region. The first gate layer m5 includes a plurality of first gate patterns m51 and a plurality of second gate patterns m52. The first gate pattern m51 may be a gate of a thin film transistor (TFT), and the second gate pattern m52 may be a first electrode plate of a storage capacitor Cst. The second gate layer m7 includes a plurality of third gate patterns m71, and the third gate pattern n71 is a second electrode plate of the storage capacitor Cst.

[0096] The first source-drain electrode layer m9 includes a source and a drain of a thin film transistor (TFT), the source is connected to the source region of the active pattern through the via hole in the interlayer dielectric layer m8, the second gate insulating layer m6 and the first gate insulating layer m4. The drain is connected to the drain region of the active pattern through the via hole in the interlayer dielectric layer m8, the second gate insulating layer m6 and the first gate insulating layer m4.

[0097] The second source-drain electrode layer m12 includes a connection pattern m121, which is connected to the drain of the thin film transistor through via holes in the first planar layer m11 and the passivation layer m10. The connection pattern m121 is also connected to the light emitting unit 1031 through via holes in the second planar layer m13.

[0098] refer to Figure 1 and Figure 2 The light emitting device layer 103 further includes a pixel defining layer n4 located between the anode layer n1 and the light emitting layer n2. The anode layer n1 includes a plurality of anode patterns n11, and the anode patterns n11 can be connected to the connection patterns m121. The pixel defining layer n4 has a plurality of hollow regions n4a, and each hollow region n4a can be used to expose at least a portion of an anode pattern n11.

[0099] The light emitting layer n2 may be connected to the anode pattern n11 through the hollow region n4a. The cathode layer n3 is connected to the light emitting layer n2.

[0100] Each light-emitting unit 1031 may include an anode pattern n11 located in the anode layer n1 (the anode pattern serves as the anode of the light-emitting unit 1031), a first cathode pattern n311 or a second cathode pattern n321 located in the light-emitting layer n2 (the light-emitting layer n1 serves as the light-emitting layer n2 of the light-emitting unit), and a cathode layer n3. The same first cathode pattern n311 may serve as the cathode of some of the light-emitting units 1031 included in the touch display panel 100, that is, some of the light-emitting units 1031 may share the same first cathode pattern n311. The same second cathode pattern n321 may serve as the cathode of some of the light-emitting units 1031 included in the touch display panel 100, that is, some of the light-emitting units 1031 may share the same second cathode pattern n321.

[0101] refer to Figure 1 and Figure 2 , the anode layer n1 may further include a plurality of dummy patterns n12, and the dummy patterns n12 may be spaced apart from the anode pattern n11. The plurality of dummy patterns n12 and the anode pattern n11 may be made of the same material and prepared based on the same preparation process. The pixel defining layer n4 includes a plurality of connection openings n4b, each of which exposes at least a portion of a dummy pattern n12. The light emitting layer n2 is not located in the connection opening n4b, and the cathode pattern in the cathode layer n3 is connected to the dummy pattern n12, and the dummy pattern n12 is used to connect the first connection portion 1021 or the second connection portion 1022.

[0102] Optionally, a portion of the multiple dummy patterns n12 can be used as transition patterns connecting the first cathode pattern n311 and the first connecting portion 1021 , and another portion of the multiple dummy patterns n12 can be used as transition patterns connecting the second cathode pattern n321 and the second connecting portion 1022 .

[0103] In the embodiment of the present application, the plurality of light emitting units 1031 may include a plurality of light emitting unit groups 1031Z. At least one light emitting unit group 1031Z includes at least one first light emitting unit 1031a, at least one second light emitting unit 1031b, and at least one third light emitting unit 1031c. Fig. 9 In the embodiment, the light emitting unit group 1031Z includes a first light emitting unit 1031a, a second light emitting unit 1031b and a third light emitting unit 1031c.

[0104] The light-emitting color of the first light-emitting unit 1031a, the light-emitting color of the second light-emitting unit 1031b, and the light-emitting color of the third light-emitting unit 1031c are different from each other. For example, the light-emitting color of the first light-emitting unit 1031a is red (red, R), and the first light-emitting unit 1031a can be a red light-emitting unit 1031-R. The light-emitting color of the second light-emitting unit 1031b is green (green, G), and the second light-emitting unit 1031b can be a green light-emitting unit 1031-G. The light-emitting color of the third light-emitting unit 1031c is blue (blue, B), and the third light-emitting unit 1031c can be a blue light-emitting unit 1031-B.

[0105] In the embodiment of the present application, the connection position between each cathode pattern in the cathode layer n3 and the dummy pattern n12 can be the overlapping area Q, and the orthographic projection of the overlapping area Q on the base substrate 101 can be located between the orthographic projections of two adjacent light-emitting unit groups 1031Z on the base substrate 101.

[0106] Optionally, the number of overlapping regions Q may be equal to the number of dummy patterns n12. Since the dummy pattern n12 is located in the anode layer n1 and is spaced apart from the anode pattern n11, the overlapping region Q is set between two adjacent light-emitting unit groups 1031Z to avoid mutual influence between the dummy pattern n12 in the overlapping region Q and the anode pattern n11 of the light-emitting unit 1031 in the light-emitting unit group 1031Z, thereby ensuring the respective functions of the dummy pattern n12 and the anode pattern n11.

[0107] Optionally, the orthographic projection of each cathode pattern on the base substrate 101 covers the orthographic projection of the plurality of light emitting unit groups 1031Z on the base substrate 101, and covers the area between any adjacent light emitting units 1031 in the plurality of light emitting unit groups 1031Z. Fig.10 The orthographic projection of the first cathode pattern n311 on the base substrate 101 covers the orthographic projection of the plurality of light emitting unit groups 1031Z on the base substrate 101, and covers the area between any adjacent light emitting units 1031 in the plurality of light emitting unit groups 1031Z. Fig.11 The orthographic projection of the second cathode pattern n321 on the base substrate 101 covers the orthographic projection of the plurality of light emitting unit groups 1031Z on the base substrate 101 and covers the area between any adjacent light emitting units 1031 in the plurality of light emitting unit groups 1031Z.

[0108] That is, the number of cathode patterns is less than the number of light emitting unit groups 1031Z, avoiding the need to set too many signal transmission lines 104 to transmit touch signals for the cathode patterns, thereby reducing the difficulty of manufacturing. Optionally, the design pitch of the cathode pattern can range from 4 mm to 5 mm.

[0109] In the embodiment of the present application, in order to ensure the uniformity and reliability of signals transmitted between the multiple cathode patterns in the cathode pattern group, the number of connecting parts can correspond to the number of light-emitting unit groups 1031Z covered by the cathode pattern. That is, a corresponding number of connecting parts can be designed according to the design pitch of the light-emitting unit group 1031Z to connect adjacent cathode patterns.

[0110] Optionally, the plurality of light emitting unit groups 1031Z covered by each cathode pattern include m groups of light emitting unit groups 1031Z arranged along the first direction X, and include n groups of light emitting unit groups 1031Z arranged along the second direction Y. That is, the cathode pattern covers m×n light emitting unit groups 1031Z, and the m×n light emitting unit groups 1031Z are arranged in m rows and n columns.

[0111] for example Fig.10 and Fig.11 In the embodiment, the plurality of light emitting unit groups 1031Z covered by the first cathode pattern n311 include 4 light emitting unit groups 1031Z arranged along the first direction X, and include 4 light emitting unit groups 1031Z arranged along the second direction Y. The plurality of light emitting unit groups 1031Z covered by the second cathode pattern n321 include 4 light emitting unit groups 1031Z arranged along the first direction X, and include 4 light emitting unit groups 1031Z arranged along the second direction Y. Fig.10 and Fig.11 This is just an example, and the values ​​of m and n can be the same or different.

[0112] The second cathode pattern group n32 includes a plurality of second cathode patterns n321 arranged along the first direction X, so the second connection portion 1022 connecting adjacent second cathode patterns n321 in the second cathode pattern group n32 may extend approximately along the first direction X. Optionally, the number of second connection portions 1022 and the number of light-emitting unit groups 1031Z covered by the second cathode pattern n321 may correspond to: any two adjacent second cathode patterns n321 in the second cathode pattern group n32 are connected by n second connection portions 1022 arranged along the second direction Y. For example Fig.12 Any two adjacent second cathode patterns n321 in the second cathode pattern group n32 are connected through four second connecting portions 1022 arranged along the second direction Y. Fig.12 The small white circle in represents the overlapping area Q of the second cathode pattern n321.

[0113] The first cathode pattern n311 includes a plurality of first cathode patterns n311 arranged along the second direction Y, so the first connection portion 1021 connecting adjacent first cathode patterns n311 in the first cathode pattern group n31 may extend approximately along the second direction Y. Optionally, the correspondence between the number of first connection portions 1021 and the number of light-emitting unit groups 1031Z covered by the first cathode pattern n311 may mean that any two adjacent first cathode patterns n311 in the first cathode pattern group n31 are connected by m first connection portions 1021 arranged along the first direction X. For example Fig.13 Any two adjacent first cathode patterns n311 in the first cathode pattern group n31 are connected through four first connecting portions 1021 arranged along the first direction X. Fig.13 The small black circle in represents the overlapping area Q of the first cathode pattern n311.

[0114] In the embodiment of the present application, in order to ensure the uniformity and reliability of the signal transmission line 104 for the cathode pattern group, the design of the signal transmission line 104 can correspond to the number of light-emitting unit groups 1031Z covered by the cathode pattern.

[0115] Optional, reference Fig.14 , each of the first signal transmission lines 104a included in the touch display panel 100 includes m first sub-signal transmission lines 104a1. The first ends a11 of the m first sub-signal transmission lines 104a1 are connected, and the second ends a12 of the m first sub-signal transmission lines 104a1 are connected to different regions of a first cathode pattern n311 in the first cathode pattern group n31. That is, the first ends a11 of the m first sub-signal transmission lines 104a1 can be connected as a whole. Fig.14 Take m equal to 2 as an example.

[0116] refer to Fig.15 , each of the second signal transmission lines 104b included in the touch display panel 100 includes n second sub-signal transmission lines 104b1. The first ends of the n second sub-signal transmission lines 104b1 are connected, and the second ends of the n second sub-signal transmission lines 104b1 are connected to different regions of a second cathode pattern n321 in the second cathode pattern group n32. That is, the first ends of the n second sub-signal transmission lines 104b1 can be connected as a whole. Fig.15 Take n equals 2 as an example.

[0117] In the examples of this application, refer to Figure 1 and Figure 2The light emitting device layer 103 further includes an isolation column n5. The isolation column n5 includes a first isolation portion n51, a second isolation portion n52 and a third isolation portion n53 stacked in a direction away from the base substrate 101.

[0118] refer to Fig.16 The orthographic projection of the second isolation portion n52 on the base substrate 101 is located within the orthographic projection of the first isolation portion n51 on the base substrate 101, and the third isolation portion n53 includes an edge portion n531 that exceeds the second isolation portion n52. The connection opening n4b in the pixel defining layer n4 at least exposes the edge portion n531, and the adjacent cathode patterns are separated by the isolation column n5.

[0119] In the embodiment of the present application, the cathode layer n3 can be formed by whole-layer evaporation during the preparation process. By designing the isolation column n5, the cathode layer n3 can be disconnected at the position of the isolation column n5, thereby forming a plurality of spaced cathode patterns.

[0120] Optionally, the etching rate of the material of the first isolation part n51 and the material of the third isolation part n53 may be lower than the etching rate of the material of the second isolation part n52. Therefore, in the process of forming the isolation column n5, due to the difference in etching rate, the second isolation part n52 may be retracted relative to the third isolation part n53 and the first isolation part n51, thereby obtaining an undercut isolation column n5, which is convenient for isolation during the preparation of the cathode layer n3.

[0121] For example, the material of the first isolation portion n51 and the material of the third isolation portion n53 may be SiNx (silicon nitride), and the material of the second isolation portion n52 may be silicon oxide (SiO).

[0122] Optionally, the height of the isolation column n5 may be greater than or equal to 0.5 μm (micrometer), and the thickness of the cathode layer n3 may be approximately Therefore, it can be ensured that the isolation column n5 can isolate the cathode layer n3.

[0123] In an embodiment of the present application, the preparation process of the light-emitting device layer 103 may include: forming an anode film, and patterning the anode film to obtain an anode layer; forming an isolation column; forming a pixel defining film; patterning the pixel defining film to obtain a pixel defining layer, the pixel defining layer including a hollow area and a connecting opening; forming a light-emitting film; using a laser to remove the light-emitting film where the connecting opening is located to obtain a light-emitting layer; and forming a cathode layer.

[0124] Optionally, the light emitting device layer 103 may not include the isolation column n5, and the multiple cathode patterns may be obtained by laser cutting or OTI process. The OTI process may refer to the preparation of multiple cathode patterns based on the mutual exclusion of the cathode material of the cathode pattern and the cathode patterning material (CPM). The embodiment of the present application does not specifically limit the preparation method of the multiple cathode patterns included in the cathode layer n3.

[0125] In the examples of this application, refer to Figure 1 and Figure 2 It can be seen that the touch display panel 100 further includes a packaging film layer 106 (thin-film encapsulation, TFE) located on the side of the light-emitting device layer 103 away from the base substrate 101. The packaging film layer 106 may include a first film layer 1061, a second film layer 1062 and a third film layer 1063 stacked in sequence in a direction away from the base substrate 101.

[0126] Optionally, the first film layer 1061 and the third film layer 1063 can be made of inorganic materials, and their main function is to block water and oxygen. The second film layer 1062 can be made of organic materials, and their main functions are stress release and flattening. For example, the first film layer 1061 and the third film layer 1063 can be made of one or more inorganic oxides such as SiNx (silicon nitride), SiOx (silicon oxide), SiOxNy (silicon oxynitride), Al2O3 (aluminum oxide) and TiO2 (titanium oxide). The second film layer 1062 can be made of a resin material. The resin can be a thermoplastic resin or a thermoplastic resin, the thermoplastic resin can include an acrylic (PMMA) resin, and the thermosetting resin can include an epoxy resin.

[0127] Optionally, the second film layer 1062 can be manufactured by ink jet printing (IJP), screen printing or dispensing. The first film layer 1061 and the third film layer 1063 can be manufactured by chemical vapor deposition (CVD) or atomic layer deposition.

[0128] In the examples of this application, refer to Figure 1 and Figure 2The touch display panel 100 includes a touch functional film layer 107 located on a side of the light emitting device layer 103 away from the base substrate 101. The touch functional film layer 107 includes: a touch buffer layer 1071 stacked in a direction away from the base substrate 101, a first touch conductive layer 1072, a touch insulating layer 1073 and a second touch conductive layer 1074. Further, the touch functional film layer 107 may also include: a touch protection layer 1075 located on a side of the second touch conductive layer 1074 away from the base substrate 101. The touch protection layer 1075 may protect the second touch conductive layer 1074. Optionally, the material of the touch protection layer 1075 may be OC (optical adhesive), and the touch protection layer 1075 may be called touch OC (touchOA, TOC).

[0129] Optionally, the first touch conductive layer 1072 may be referred to as a first touch metal A (TMA) layer. The touch insulating layer 1073 may be referred to as a dielectric layer (TSP layer dielectric, TLD) of a touch screen panel (TSP). The second touch conductive layer 1074 may be referred to as a second touch metal B (TMB) layer.

[0130] Optionally, the touch display panel may be integrated with capacitive touch in addition to electromagnetic touch. Since the cathode pattern in the cathode layer n3 is used as the electromagnetic electrode in the embodiment of the present application, and a touch function layer of capacitive touch is also provided, the electromagnetic touch function and the capacitive touch function will not affect each other. In other words, the touch display panel is compatible with electromagnetic touch and capacitive touch, and the touch display panel can realize electromagnetic touch and capacitive touch simultaneously or separately, thereby reducing the cost while ensuring the thinness of the touch display panel.

[0131] Optionally, the material of the touch buffer layer 1071 may be SiN (silicon nitride). The materials of the first touch conductive layer 1072 and the second touch conductive layer 1074 may be a three-layer structure of Ti (titanium), Al (aluminum) and Ti (titanium), and the materials of the first touch conductive layer 1072 and the second touch conductive layer 1074 may be Ti / Al / Ti. The material of the touch insulating layer 1073 may be SiN (silicon nitride).

[0132] Optionally, the first touch conductive layer 1072 and the second touch conductive layer 1074 form mutually insulated first touch electrodes s1 and second touch electrodes s2. The first touch electrodes s1 and the first touch electrodes s2 may both be in a grid structure. Figure 1The first touch conductive layer 1072 includes a bridge electrode s12 of the first touch electrode s1, and the second touch conductive layer 1074 includes a main electrode s11 of the first touch electrode s1 and a second touch electrode s2. The bridge electrode s12 of the first touch electrode s1 and the main electrode s11 are electrically connected through a via hole in the touch insulating layer 1073. The first touch electrode s1 and the second touch electrode s2 are insulated from each other.

[0133] Optionally, one of the first touch electrode s1 and the second touch electrode s2 may be a transmitting (TX) electrode, and the other touch electrode may be a sensing (RX) electrode.

[0134] refer to Fig.17 The first touch conductive layer 1072 and the second touch conductive layer 1074 may constitute a plurality of first touch electrodes s1 and a plurality of second touch electrodes s2. The plurality of first touch electrodes s1 are arranged along the second direction Y, and each first touch electrode s1 extends along the second direction Y. The plurality of second touch electrodes s2 are arranged along the first direction X, and each second touch electrode s2 extends along the second direction Y. The orthographic projections of the first touch electrode s1 and the second touch electrode s2 on the base substrate 101 overlap, and the first touch electrode s1 and the second touch electrode s2 are insulated from each other.

[0135] Optionally, the first touch electrode s1 includes a plurality of bridge electrodes s12 located on the first touch conductive layer 1072 and a plurality of main electrodes s11 located on the second touch conductive layer 1074 , and the plurality of main electrodes s11 are arranged along the first direction X. The second touch electrode s2 is located on the second touch conductive layer 1074 .

[0136] The orthographic projection of the bridge electrode s12 on the base substrate 101 overlaps with the orthographic projection of the second touch electrode s2 on the base substrate 101, and the main electrode s11 and the second touch electrode s2 are arranged at intervals. Adjacent main electrodes s11 of the plurality of main electrodes s11 of the first touch electrode s1 are connected by at least one bridge electrode s12.

[0137] refer to Fig.17 The touch display panel 100 further includes: a plurality of first touch signal lines 108 and a plurality of second touch signal lines 109. The plurality of first touch signal lines 108 are connected to the plurality of first touch electrodes s1 in a one-to-one correspondence, and the plurality of second touch signal lines 109 are connected to the plurality of second touch electrodes s2 in a one-to-one correspondence.

[0138] Optionally, the first touch signal line 108 and the second touch signal line 109 may be located in the first touch conductive layer 1072 or the second touch conductive layer 1074. Furthermore, the first touch signal line 108 and the second touch signal line 109 may be located in the same touch conductive layer or in different touch conductive layers.

[0139] In the embodiment of the present application, the edge of the orthographic projection of some cathode patterns among the multiple first cathode patterns n311 and the multiple second cathode patterns n321 on the base substrate 101 is located on the side where the orthographic projection of the first touch electrode s1 and the second touch electrode s2 on the base substrate 101 is away from the display area 101a.

[0140] For example, at least part of the orthographic projections of the first cathode pattern n311 and the second cathode pattern n321 on the base substrate 101 may be located in the peripheral area 101b to be electrically connected to the driving power line 105 located in the peripheral area 101b. By overlapping the surface of the driving power line 105 with the first cathode pattern n311 and the second cathode pattern n321, the signal transmission resistance can be reduced.

[0141] Optionally, the driving power line 105 may be located at the first gate layer, the second gate layer, the first source-drain layer or the second source-drain layer. In order to realize the connection between the first cathode pattern n311 and the second cathode pattern n321 in the cathode layer n3 and the driving power line 105, the anode layer n1 may include a switching pattern, the first cathode pattern n311 may be connected to the driving power line 105 via the switching pattern located in the anode layer n1, and the second cathode pattern n321 may be connected to the driving power line 105 via the switching pattern located in the anode layer n1.

[0142] refer to Figure 1 , Figure 7 as well as Fig.16 The touch display panel 100 also includes a driving chip 110 located in the peripheral area 101b. The signal transmission line 104, the driving power line 105, the first touch signal line 108 and the second touch signal line 109 can all be connected to the driving chip 110, and the driving chip 110 can control the signals of different signal lines.

[0143] In summary, an embodiment of the present application provides a touch display panel, which includes a substrate, a driving device layer and a light-emitting device layer. The cathode layer in the light-emitting device layer includes a first cathode pattern group and a second cathode pattern group. The multiple first cathode patterns included in the first cathode pattern group can be connected by multiple first connecting parts, and the multiple second cathode patterns included in the second cathode pattern group can be connected by multiple second connecting parts. In this way, the first cathode pattern group and the second cathode pattern group can be used as different electromagnetic electrodes for electromagnetic touch, thereby generating a magnetic field between the first cathode pattern group and the second cathode pattern group to realize the function of electromagnetic touch. That is, in the embodiment of the present application, the electromagnetic touch can be integrated into the touch display panel without the need for an external electromagnetic touch, which is conducive to realizing the thinness of the touch display panel.

[0144] Fig.18is a schematic diagram of the structure of a display device provided in an embodiment of the present application. Fig.18 The display device includes: a power supply component 200 and a display panel 100 as provided in the above embodiment. The power supply component 200 is connected to the display panel 100 to supply power to the display panel 100.

[0145] Optionally, the display device may be an organic light-emitting diode (OLED) display device. The display device may be any appropriate display device, including but not limited to any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, and an e-book.

[0146] Since the display device can have substantially the same technical effects as the display panel described in the previous embodiment, the technical effects of the display device will not be repeatedly described here for the purpose of brevity.

[0147] The present disclosure describes multiple embodiments, but the description is exemplary rather than restrictive, and it is apparent to those skilled in the art that there may be more embodiments and implementations within the scope of the embodiments described in the present disclosure. Although many possible feature combinations are shown in the drawings and discussed in the specific embodiments, many other combinations of the disclosed features are possible. Unless specifically limited, any feature or element of any embodiment may be used in combination with any other feature or element in any other embodiment, or may replace any other feature or element in any other embodiment.

[0148] The present disclosure includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features, and elements disclosed in the present disclosure may also be combined with any conventional features or elements to form a unique invention scheme defined by the claims. Any features or elements of any embodiment may also be combined with features or elements from other invention schemes to form another unique invention scheme defined by the claims. Therefore, it should be understood that any feature shown and / or discussed in the present disclosure may be implemented individually or in any appropriate combination. Therefore, except for the limitations made according to the attached claims and their equivalents, the embodiments are not subject to other limitations. In addition, various modifications and changes may be made within the scope of protection of the attached claims.

[0149] In addition, when describing representative embodiments, the specification may have presented the method and / or process as a specific sequence of steps. However, to the extent that the method or process does not rely on the specific order of the steps described herein, the method or process should not be limited to the steps in the specific order described. As will be appreciated by those of ordinary skill in the art, other orders of steps are also possible. Therefore, the specific order of the steps set forth in the specification should not be interpreted as a limitation to the claims. In addition, the claims for the method and / or process should not be limited to the steps that are performed in the order written, and those skilled in the art can easily understand that these orders can be changed and still remain within the spirit and scope of the disclosed embodiments.

[0150] In the drawings, the size of one or more components, the thickness of a layer, or a region may be exaggerated for clarity. In addition, the drawings schematically illustrate ideal examples, and one embodiment of the present disclosure is not limited to the shapes or numerical values ​​shown in the drawings.

[0151] The ordinal numbers such as "first", "second", and "third" in this specification are provided to avoid confusion of constituent elements, and are not intended to limit the quantity. The "plurality" in this disclosure means two or more.

[0152] The thickness range of the film layer in this specification is A to B, which is used to indicate that the thickness is between A and B, and includes the two endpoint values ​​of A and B.

[0153] In this specification, for the sake of convenience, the words and phrases indicating the orientation or positional relationship such as "middle", "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like are used to illustrate the positional relationship of the constituent elements with reference to the drawings. This is only for the convenience of describing this specification and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. The positional relationship of the constituent elements is appropriately changed according to the orientation of the constituent elements being described. Therefore, it is not limited to the words and phrases described in the specification, and can be appropriately replaced according to the circumstances.

[0154] In this specification, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate, or the internal communication of two elements. For ordinary technicians in this field, the meanings of the above terms in this disclosure can be understood according to the circumstances.

[0155] In this specification, a transistor refers to an element including at least three terminals: a gate electrode, a drain electrode, and a source electrode. The transistor has a channel region between a drain electrode (drain electrode terminal, drain region, or drain) and a source electrode (source electrode terminal, source region, or source), and current can flow through the drain electrode, the channel region, and the source electrode. Note that in this specification, the channel region refers to a region where current mainly flows.

[0156] In this specification, the first electrode of a transistor may be a drain electrode, and the second electrode of a transistor may be a source electrode, or the first electrode of a transistor may be a source electrode, and the second electrode of a transistor may be a drain electrode. In the case of using transistors with opposite polarities or when the direction of current changes during circuit operation, the functions of the "source electrode" and the "drain electrode" are sometimes interchanged. Therefore, in this specification, the "source electrode" and the "drain electrode" may be interchanged, and the "source terminal" and the "drain terminal" may be interchanged.

[0157] In this specification, "connection" includes the case where the components are connected together through an element having some electrical function. There is no particular limitation on the "element having some electrical function" as long as it can transmit electrical signals between the connected components. Examples of "element having some electrical function" include not only electrodes and wiring, but also switching elements such as transistors, resistors, inductors, capacitors, and other elements having various functions.

[0158] In this specification, "parallel" means a state where the angle formed by two straight lines is greater than -10° and less than 10°, and therefore, also includes a state where the angle is greater than -5° and less than 5°. In addition, "perpendicular" means a state where the angle formed by two straight lines is greater than 80° and less than 100°, and therefore, also includes a state where the angle is greater than 85° and less than 95°.

[0159] In this specification, "film" and "layer" may be interchanged. For example, "conductive layer" may be replaced by "conductive film". Similarly, "insulating film" may be replaced by "insulating layer".

[0160] In the present disclosure, “thickness” and “height” refer to the vertical distance between the surface of the film layer away from the substrate and the surface of the film layer close to the substrate.

[0161] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A touch display panel, characterized in that: The touch display panel comprises: A base substrate, the base substrate comprising a display area and a peripheral area surrounding the display area; A driving device layer, the driving device layer is located on one side of the base substrate, the driving device layer includes a plurality of conductive layers, the plurality of conductive layers include a plurality of first connecting portions and a plurality of second connecting portions, the first connecting portions and the second connecting portions are insulated from each other; and a light-emitting device layer, the light-emitting device layer is located on one side of the base substrate, the light-emitting device layer includes an anode layer, a light-emitting layer and a cathode layer, the anode layer, the light-emitting layer and the cathode layer are used to form a plurality of light-emitting units, and the light-emitting units are used to emit light; Wherein, the cathode layer includes a plurality of first cathode pattern groups arranged along a first direction, and a plurality of second cathode pattern groups arranged along a second direction, each of the first cathode pattern groups includes a plurality of first cathode patterns arranged along the second direction, each of the second cathode pattern groups includes a plurality of second cathode patterns arranged along the first direction, and a first cathode pattern in the first cathode pattern group is provided between two adjacent second cathode patterns among the plurality of second cathode patterns in each of the second cathode pattern groups; the plurality of first cathode patterns in each of the first cathode pattern groups are connected by the plurality of first connecting parts, and the first cathode pattern group is a first electromagnetic electrode, the plurality of second cathode patterns in each of the second cathode pattern groups are connected by the plurality of second connecting parts, and the second cathode pattern group is a second electromagnetic electrode.

2. The touch display panel according to claim 1, characterized in that: The touch display panel further includes: a plurality of signal transmission lines, the plurality of signal transmission lines including: a plurality of first signal transmission lines and a plurality of second signal transmission lines; Each of the first signal transmission lines is connected to a first end of the first cathode pattern group, and the first end of each of the first cathode pattern groups is connected to at least one first signal transmission line, and the first signal transmission line is used to transmit a first signal to the first cathode pattern group; Each of the second signal transmission lines is connected to a first end of the second cathode pattern group, and the first end of each of the second cathode pattern groups is connected to at least one second signal transmission line, and the second signal transmission line is used to transmit a second signal to the second cathode pattern group; Wherein, under the action of the first signal and the second signal, a magnetic field is generated between the first cathode pattern group and the second cathode pattern group.

3. The touch display panel according to claim 2, characterized in that: The touch display panel further includes: a third connecting portion and a fourth connecting portion; The third electrode portion is connected to the second ends of the plurality of first cathode pattern groups, and the fourth connection portion is connected to the second ends of the plurality of second cathode pattern groups.

4. The touch display panel according to claim 3, characterized in that: The touch display panel further includes: a driving power line located in the peripheral area; At least a portion of the first cathode pattern group is located in the peripheral area, and a portion of the first cathode pattern group located in the peripheral area is connected to the driving power line; At least a portion of the second cathode pattern group is located in the peripheral area, and a portion of the second cathode pattern group located in the peripheral area is connected to the driving power line; The driving power line provides driving power signals for the first cathode pattern group and the second cathode pattern group in the first stage, and the signal transmission line provides touch signals for the first cathode pattern group and the second cathode pattern group in the second stage, and the first stage and the second stage are different.

5. The touch display panel according to any one of claims 1 to 4, characterized in that: The driving device layer includes: a buffer layer, an active layer, a first gate insulating layer, a first gate layer, a second gate insulating layer, a second gate layer, an interlayer dielectric layer, a first source and drain electrode layer, a passivation layer, a first planarization layer, a second source and drain electrode layer and a second planarization layer; The multi-layer conductive layer includes the first gate layer, the second gate layer, the first source-drain electrode layer and the second source-drain electrode layer; The first connecting portion and the second connecting portion are located at two different layers among the first gate layer, the second gate layer, the first source-drain layer and the second source-drain layer.

6. The touch display panel according to claim 5, characterized in that: The light emitting device layer further comprises a pixel defining layer located between the anode layer and the light emitting layer; The anode layer includes an anode pattern of each of the plurality of light-emitting units, the pixel defining layer includes a plurality of light-emitting openings, each of the light-emitting openings exposes at least a portion of the anode pattern of one of the light-emitting units, the light-emitting layer is located in the light-emitting opening and connected to the anode pattern, and the cathode pattern in the cathode layer is connected to the light-emitting layer; The anode layer also includes a plurality of dummy patterns, the dummy patterns and the anode patterns are arranged at intervals, the pixel defining layer includes a plurality of connection openings, each of the connection openings exposes at least a portion of the dummy pattern, the light-emitting layer is not located in the connection opening, the cathode pattern in the cathode layer is connected to the dummy pattern, and the dummy pattern is used to connect the first connection portion or the second connection portion.

7. The touch display panel according to claim 6, characterized in that: The plurality of light-emitting units include: a plurality of light-emitting unit groups, at least one of the light-emitting unit groups includes at least one first light-emitting unit, at least one second light-emitting unit and at least one third light-emitting unit, and the light-emitting colors of the first light-emitting unit, the light-emitting colors of the second light-emitting unit and the light-emitting colors of the third light-emitting unit are different from each other; The connection position between each cathode pattern in the cathode layer and the dummy pattern is an overlap region, and the orthographic projection of the overlap region on the base substrate is located between the orthographic projections of two adjacent light emitting unit groups on the base substrate.

8. The touch display panel according to claim 7, characterized in that: The orthographic projection of each cathode pattern on the base substrate covers the orthographic projections of the plurality of light emitting unit groups on the base substrate, and covers the area between any adjacent light emitting units in the plurality of light emitting unit groups.

9. The touch display panel according to claim 8, characterized in that: The plurality of light emitting unit groups covered by each cathode pattern include m groups of light emitting unit groups arranged along a first direction, and include n groups of light emitting unit groups arranged along a second direction; Any adjacent two of the second cathode patterns in the second cathode pattern group are connected via n second connecting portions, and any adjacent two of the first cathode patterns in the first cathode pattern group are connected via m first connecting portions.

10. The touch display panel according to claim 9, characterized in that: Each of the plurality of first signal transmission lines included in the touch display panel includes m first sub-signal transmission lines, the first ends of the m first sub-signal transmission lines are connected, and the second ends of the m first sub-signal transmission lines are connected to different regions of a first cathode pattern in the first cathode pattern group; Each of the multiple second signal transmission lines included in the touch display panel includes n second sub-signal transmission lines, the first ends of the n second sub-signal transmission lines are connected, and the second ends of the n second sub-signal transmission lines are connected to different areas of a second cathode pattern in the second cathode pattern group.

11. The touch display panel according to claim 6, characterized in that: The light emitting device layer further includes: an isolation column, the isolation column including a first isolation portion, a second isolation portion and a third isolation portion stacked in a direction away from the base substrate; The orthographic projection of the second isolation portion on the base substrate is located within the orthographic projection of the first isolation portion on the base substrate, the third isolation portion includes an edge portion extending beyond the second isolation portion, the connection opening at least exposes the edge portion, and adjacent cathode patterns are separated by the isolation column.

12. The touch display panel according to any one of claims 1 to 4, and 6 to 11, characterized in that: The touch display panel comprises a touch function film layer located on a side of the light emitting device layer away from the base substrate; The touch function film layer comprises: a touch buffer layer, a first touch conductive layer, a touch insulating layer, and a second touch conductive layer stacked in a direction away from the base substrate; The first touch conductive layer and the second touch conductive layer constitute a plurality of first touch electrodes and a plurality of second touch electrodes, the plurality of first touch electrodes are arranged along the first direction, and each of the first touch electrodes extends along the second direction, the plurality of second touch electrodes are arranged along the second direction, and each of the second touch electrodes extends along the first direction; an orthographic projection of the first touch electrode on the base substrate overlaps with an orthographic projection of the second touch electrode on the base substrate, and the first touch electrode and the second touch electrode are insulated from each other.

13. The touch display panel according to claim 12, characterized in that: Edges of orthographic projections of some cathode patterns among the plurality of first cathode patterns and the plurality of second cathode patterns on the base substrate are located on a side where the orthographic projections of the first touch electrode and the second touch electrode on the base substrate are away from the display area.

14. The touch display panel according to claim 12, characterized in that: The first touch control electrode includes a plurality of bridge electrodes located in the first touch control conductive layer, and a plurality of main body electrodes located in the second touch control conductive layer, wherein the plurality of main body electrodes are arranged along the second direction; the second touch control electrode is located in the second touch control conductive layer; The orthographic projection of the bridging electrode on the base substrate overlaps with the orthographic projection of the second touch electrode on the base substrate, and the main electrode and the second touch electrode are arranged at intervals; adjacent main electrodes among the multiple main electrodes of the first touch electrode are connected by at least one of the bridging electrodes.

15. The touch display panel according to claim 12, characterized in that: The touch display panel further includes: a plurality of first touch signal lines and a plurality of second touch signal lines; The plurality of first touch signal lines are connected to the plurality of first touch electrodes in a one-to-one correspondence, and the plurality of second touch signal lines are connected to the plurality of second touch electrodes in a one-to-one correspondence.

16. A touch display device, characterized in that: The touch display device comprises: a power supply component, and a touch display panel according to any one of claims 1 to 15; The power supply component is connected to the touch display panel, and the power supply component is used to supply power to the touch display panel.

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