Touch display panel and touch display device

Abstract

A touch display panel and a touch display device. The touch display panel comprises: a display structure, having a display area and a peripheral area located at the periphery of the display area; and a touch structure, comprising: a plurality of main touch electrodes and a plurality of auxiliary touch electrodes extending in the same direction, main touch leads connected to the main touch electrodes, and auxiliary touch leads electrically connected to the auxiliary touch electrodes, wherein a main via hole group is provided at a region where each main touch lead is electrically connected to the corresponding main touch electrode, and an auxiliary via hole group is provided at a region where each auxiliary touch lead is electrically connected to the corresponding auxiliary touch electrode; the main via hole group comprises: a plurality of main via holes; the auxiliary via hole group comprises: a plurality of auxiliary via holes; and the sum of the orthographic projection areas of the main via holes in the main via hole group on a substrate is approximately equal to the sum of the orthographic projection areas of the auxiliary via holes in the auxiliary via hole group on the substrate.

Description

Touch display panel and touch display device Technical Field

[0001] This disclosure relates to the field of display technology, and more particularly to a touch display panel and a touch display device. Background Technology

[0002] With the diversification of online education and office spaces, and the widespread use of portable electronic products in business and education, people have higher demands for human-computer interaction solutions, including an increased demand for writing with a stylus pen on a display screen.

[0003] Summary of the Invention

[0004] This disclosure provides a touch display panel and a touch display device. The touch display panel includes:

[0005] A touch display panel, comprising:

[0006] Substrate;

[0007] A display structure is located on one side of the substrate, the display structure having a display area and a peripheral area located around the display area;

[0008] A touch structure is located on the side of the display structure opposite to the substrate; the touch structure includes: a main touch electrode and a plurality of auxiliary touch electrodes, a main touch lead connected to the main touch electrode, and auxiliary touch leads electrically connected to the auxiliary touch electrodes; at least a portion of the main touch electrode and at least a portion of the auxiliary touch electrodes extend in the same direction, and at least a portion of the auxiliary touch electrodes are located on at least one side of the main touch electrode perpendicular to the extension direction; the width of the main touch electrode perpendicular to the extension direction is greater than the width of the auxiliary touch electrodes perpendicular to the extension direction.

[0009] The main touch lead has a main via group in the area where it is electrically connected to the main touch electrode, and the auxiliary touch lead has an auxiliary via group in the area where it is electrically connected to the auxiliary touch electrode; the main via group includes a plurality of main vias; the auxiliary via group includes a plurality of auxiliary vias.

[0010] Both the main touch lead and the auxiliary touch lead include: a first metal portion, a second metal portion located on the side of the first metal portion away from the substrate, and an insulating layer located between the first metal portion and the second metal portion; the first metal portion and the second metal portion of the main touch lead are connected through the main via; the first metal portion and the second metal portion of the auxiliary touch lead are connected through the auxiliary via; the sum of the orthographic projection areas of the main vias in the main via group on the substrate is approximately equal to the sum of the orthographic projection areas of the auxiliary vias in the auxiliary via group on the substrate.

[0011] In one possible implementation, the number of main vias in the main via group is the same as the number of auxiliary vias in the auxiliary via group.

[0012] In one possible implementation, the distance between two adjacent auxiliary vias in the auxiliary via group is less than the distance between two adjacent main vias in the main via group.

[0013] In one possible implementation, the length of the auxiliary via along the extension direction of the auxiliary touch lead is greater than the length of the main via along the extension direction of the main touch lead.

[0014] In one possible implementation, the length of the auxiliary via along the extension direction of the auxiliary touch lead and the length of the main via along the extension direction of the main touch lead satisfy the following relationship:

[0015] e2 = m1 * e1 / m2, where e2 represents the length of the auxiliary via along the extension direction of the auxiliary touch lead, e1 represents the length of the main via along the extension direction of the main touch lead, m1 represents the number of main vias in the main via group, and m2 represents the number of auxiliary vias in the auxiliary via group.

[0016] In one possible implementation, the number of auxiliary vias in the auxiliary via group is less than the number of main vias in the main via group.

[0017] In one possible implementation, the distance between two adjacent auxiliary vias in the auxiliary via group is equal to the distance between two adjacent main vias in the main via group.

[0018] This disclosure also provides another touch display panel, which includes:

[0019] Substrate;

[0020] A display structure is located on one side of the substrate, the display structure having a display area and a peripheral area located around the display area;

[0021] A touch structure is located on the side of the display structure opposite to the substrate; the touch structure includes: a plurality of main touch electrodes and a plurality of auxiliary touch electrodes with the same extension direction, a main touch lead connected to the main touch electrodes, and an auxiliary touch lead electrically connected to the auxiliary touch electrodes; the width of the main touch electrodes in the direction perpendicular to the extension direction is greater than the width of the auxiliary touch electrodes in the direction perpendicular to the extension direction.

[0022] The main touch lead has a main via group in the area where it is electrically connected to the main touch electrode, and the auxiliary touch lead has an auxiliary via group in the area where it is electrically connected to the auxiliary touch electrode; the main via group includes a plurality of main vias; the auxiliary via group includes a plurality of auxiliary vias.

[0023] Both the main touch lead and the auxiliary touch lead include: a first metal portion, a second metal portion located on the side of the first metal portion away from the substrate, and an insulating layer located between the first metal portion and the second metal portion; the first metal portion and the second metal portion of the main touch lead are connected through the main via; the first metal portion and the second metal portion of the auxiliary touch lead are connected through the auxiliary via.

[0024] The number of main vias in the main via group is the same as the number of auxiliary vias in the auxiliary via group; the distance between two adjacent auxiliary vias in the auxiliary via group is less than the distance between two adjacent main vias in the main via group.

[0025] This disclosure also provides another touch display panel, which includes:

[0026] Substrate;

[0027] A display structure is located on one side of the substrate, the display structure having a display area and a peripheral area located around the display area;

[0028] A touch structure is located on the side of the display structure opposite to the substrate; the touch structure includes: a plurality of main touch electrodes and a plurality of auxiliary touch electrodes with the same extension direction, a main touch lead connected to the main touch electrodes, and an auxiliary touch lead electrically connected to the auxiliary touch electrodes; the width of the main touch electrodes in the direction perpendicular to the extension direction is greater than the width of the auxiliary touch electrodes in the direction perpendicular to the extension direction.

[0029] The main touch lead has a main via group in the area where it is electrically connected to the main touch electrode, and the auxiliary touch lead has an auxiliary via group in the area where it is electrically connected to the auxiliary touch electrode; the main via group includes a plurality of main vias; the auxiliary via group includes a plurality of auxiliary vias.

[0030] Both the main touch lead and the auxiliary touch lead include: a first metal portion, a second metal portion located on the side of the first metal portion away from the substrate, and an insulating layer located between the first metal portion and the second metal portion; the first metal portion and the second metal portion of the main touch lead are connected through the main via; the first metal portion and the second metal portion of the auxiliary touch lead are connected through the auxiliary via.

[0031] The length of the auxiliary via along the extension direction of the auxiliary touch lead is greater than the length of the main via along the extension direction of the main touch lead; the length of the auxiliary via along the extension direction of the auxiliary touch lead and the length of the main via along the extension direction of the main touch lead satisfy the following relationship:

[0032] e2 = m1 * e1 / m2, where e2 represents the length of the auxiliary via along the extension direction of the auxiliary touch lead, e1 represents the length of the main via along the extension direction of the main touch lead, m1 represents the number of main vias in the main via group, and m2 represents the number of auxiliary vias in the auxiliary via group.

[0033] In one possible implementation, the number of auxiliary vias in the auxiliary via group is less than the number of main vias in the main via group.

[0034] In one possible implementation, the distance between two adjacent auxiliary vias in the auxiliary via group is equal to the distance between two adjacent main vias in the main via group.

[0035] In one possible implementation, the touch structure further includes: a plurality of spaced touch via groups; the touch via groups include: a plurality of touch vias that are staggered in sequence along the arrangement direction of the main touch leads;

[0036] The orthographic projection of the touch via on the substrate is located within at least one of the orthographic projections of the main touch lead and the auxiliary touch lead on the substrate; the first metal portion and the second metal portion are also connected through the touch via.

[0037] In one possible implementation, the touch structure includes: a first axis passing through the center of the touch via and parallel to the arrangement direction of the plurality of main touch leads;

[0038] In the same group of touch vias, the first axes of different touch vias do not overlap.

[0039] In one possible implementation, the first axis spacing of any two adjacent touch vias in the same group of touch vias is the same.

[0040] In one possible implementation, the main touch lead and / or the auxiliary touch lead includes: a main extension and a bend; the maximum linewidth of the bend in the direction perpendicular to the main touch lead is greater than the linewidth of the main extension in the direction perpendicular to the main touch lead; the touch via is located at the bend.

[0041] In one possible implementation, at least one of the bending portions includes: a connecting portion, and a sub-bending portion located on at least one side of the connecting portion;

[0042] The line width of the sub-bend in the direction perpendicular to the main touch lead is greater than the line width of the connecting part in the direction perpendicular to the main touch lead; the touch via is located at the sub-bend.

[0043] In one possible implementation, the bending portion includes two sub-bending portions, namely a first sub-bending portion and a second sub-bending portion; the first sub-bending portion and the second sub-bending portion are respectively located at both ends of the connecting portion and are symmetrically distributed about a second axis, the second axis passing through the center of the connecting portion and perpendicular to the extension direction of the connecting portion.

[0044] In one possible implementation, the main extension includes a first outer edge and a second outer edge; the sub-bending portion includes a third outer edge and a fourth outer edge.

[0045] The extension directions of the first outer edge, the second outer edge, the third outer edge, and the fourth outer edge are all parallel to the extension direction of the main extension portion; the extension line of the third outer edge coincides with the extension line of the first outer edge; the fourth outer edge is located on the side of the extension line of the second outer edge away from the first outer edge.

[0046] In one possible implementation, the connecting portion includes a fifth outer edge and a sixth outer edge; both the fifth outer edge and the sixth outer edge are parallel to the extending direction of the connecting portion.

[0047] The fifth outer edge is located in the region between the extension line of the third outer edge and the extension line of the second outer edge; the sixth outer edge coincides with the fourth outer edge.

[0048] In one possible implementation, the sub-bend further includes: a seventh outer edge connecting the third outer edge and the fifth outer edge, and an eighth outer edge connecting the second outer edge and the fourth outer edge;

[0049] The seventh outer edge is located on the side of the eighth outer edge that is away from the second outer edge.

[0050] In one possible implementation, the extension direction of the seventh outer edge is perpendicular to the extension direction of the first outer edge; and the extension direction of the eighth outer edge is perpendicular to the extension direction of the second outer edge.

[0051] In one possible implementation, the angle between the seventh outer edge and the first outer edge ranges from 90° to 180°; the angle between the eighth outer edge and the second outer edge ranges from 90° to 180°.

[0052] In one possible implementation, the orthographic projection of the touch via onto the substrate includes: a first hole edge opposite to the seventh outer edge, and a second hole edge opposite to the eighth outer edge;

[0053] The edge of the first hole is parallel to the seventh outer edge, and the edge of the second hole is parallel to the eighth outer edge.

[0054] In one possible implementation, the main touch electrode includes: a plurality of first main touch electrodes extending along a second direction; the auxiliary touch electrode includes: at least one first auxiliary touch electrode extending along the second direction, the first auxiliary touch electrode being located on at least one side of the plurality of first main touch electrodes along the first direction; the first main touch electrodes and the first auxiliary touch electrodes are located in the same layer;

[0055] The first auxiliary touch electrode includes: a first sub-electrode and a second sub-electrode; the first sub-electrode and the second sub-electrode extend along the second direction and are arranged along the first direction; the orthographic projection of the first sub-electrode on the substrate is located in the peripheral area; at least a portion of the orthographic projection of the second sub-electrode on the substrate is located in the display area.

[0056] In one possible implementation, the first main touch electrode and the first auxiliary touch electrode are in the same layer and made of the same material as the second metal part.

[0057] The first main touch electrode is directly contacted and electrically connected to the second metal part of the main touch lead; the first auxiliary touch electrode is directly contacted and electrically connected to the second metal part of the auxiliary touch lead.

[0058] In one possible implementation, the main touch electrode includes: a plurality of second main touch electrodes extending along a first direction; the auxiliary touch electrode includes: at least one second auxiliary touch electrode extending along the first direction, the second auxiliary touch electrode being located on at least one side of the plurality of second main touch electrodes along a second direction; the second main touch electrode and the second auxiliary touch electrode are located in the same layer;

[0059] The second auxiliary touch electrode includes a third sub-electrode and a fourth sub-electrode; the third sub-electrode and the fourth sub-electrode extend along the first direction and are arranged along the second direction; the orthographic projection of the third sub-electrode on the substrate is located in the peripheral area; at least a portion of the orthographic projection of the fourth sub-electrode on the substrate is located in the display area.

[0060] In one possible implementation, the second main touch electrode and the second auxiliary touch electrode are in the same layer and made of the same material as the first metal part;

[0061] The second main touch electrode is directly contacted and electrically connected to the first metal part of the main touch lead; the second auxiliary touch electrode is directly contacted and electrically connected to the first metal part of the auxiliary touch lead.

[0062] This disclosure also provides a touch display device, which includes the touch display panel as described in this disclosure. Attached Figure Description

[0063] Figure 1A is one of the cross-sectional schematic diagrams of a touch display panel provided in an embodiment of this disclosure;

[0064] Figure 1B is a second cross-sectional schematic diagram of the touch display panel provided in the embodiment of this disclosure;

[0065] Figure 2A is one of the top views of a touch display panel provided in an embodiment of this disclosure;

[0066] Figure 2B is a schematic diagram of one of the touch layers in Figure 2A;

[0067] Figure 2C is a schematic diagram of another touch layer in Figure 2A;

[0068] Figure 3A is an enlarged view of the dashed box S1 in Figure 2A;

[0069] Figure 3B is an enlarged view of the dashed box S2 in Figure 2A;

[0070] Figure 3C is an enlarged view of the dashed box S3 in Figure 2A;

[0071] Figure 3D is an enlarged view of the dashed box S4 in Figure 2A;

[0072] Figure 4A is one of the schematic diagrams of the first main touch electrode and the corresponding main via group;

[0073] Figure 4B is an enlarged view of the dashed box S6 in Figure 4A;

[0074] Figure 4C is a schematic diagram of the film layer of the first metal part of the touch lead in Figure 4B;

[0075] Figure 4D is a schematic diagram of the film layer of the second metal part of the touch lead in Figure 4B;

[0076] Figure 4E is a schematic diagram of the cross section along the dashed line e1 in Figure 4B;

[0077] Figure 5A is one of the schematic diagrams of the second auxiliary touch electrode and the corresponding auxiliary via group;

[0078] Figure 5B is a schematic diagram of the cross section along the dashed line e2 in Figure 5A;

[0079] Figure 6A is one of the schematic diagrams of the via group corresponding to the first main touch electrode and the first auxiliary touch electrode;

[0080] Figure 6B is an enlarged view of the dashed frame S7 in Figure 6A;

[0081] Figure 6C is a schematic cross-section diagram along the dashed line e3 in Figure 6B;

[0082] Figure 7A is a second schematic diagram of the via group corresponding to the first main touch electrode and the first auxiliary touch electrode;

[0083] Figure 7B is an enlarged view of the dashed frame S8 in Figure 7A;

[0084] Figure 8A is one of the schematic diagrams of the touch via assembly provided in the embodiments of this disclosure;

[0085] Figure 8B is an enlarged view of the dashed box S91 in Figure 8A;

[0086] Figure 8C is a schematic diagram of the cross section along the dashed line k1 in Figure 8B;

[0087] Figure 9A is a second schematic diagram of the touch via assembly provided in an embodiment of this disclosure;

[0088] Figure 9B is one of the enlarged schematic diagrams of the dashed box S92 in Figure 9A;

[0089] Figure 9C is a second enlarged schematic diagram of the dashed box S92 in Figure 9A;

[0090] Figure 10A is a third schematic diagram of the touch via assembly provided in the embodiments of this disclosure;

[0091] Figure 10B is an enlarged view of the dashed box S93 in Figure 10A;

[0092] Figure 11A is a fourth schematic diagram of the touch via assembly provided in the embodiments of this disclosure;

[0093] Figure 11B is an enlarged view of the dashed box S94 in Figure 11A;

[0094] Figure 12A is a fifth schematic diagram of the touch via assembly provided in the embodiments of this disclosure;

[0095] Figure 12B is an enlarged view of the dashed box S95 in Figure 12A;

[0096] Figure 13A is a second top view of the touch display panel provided in an embodiment of this disclosure;

[0097] Figure 13B is an enlarged view of the dashed box S51 in Figure 13A;

[0098] Figure 13C is an enlarged view of the dashed box S52 in Figure 13A. Detailed Implementation

[0099] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0100] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0101] As used herein, “approximately” or “substantially the same” includes the stated value and means within an acceptable range of deviations from the specific value, as determined by a person skilled in the art taking into account the measurement in question and the errors associated with the measurement of the specific quantity (i.e., limitations of the measurement system). For example, “substantially the same” may mean a difference relative to the stated value within one or more standard deviations, or within ±30%, 20%, 10%, or 5%.

[0102] In the accompanying drawings, the thicknesses of layers, films, panels, regions, etc., are enlarged for clarity. Exemplary embodiments are described herein with reference to cross-sectional views that are schematic diagrams of idealized embodiments. Thus, deviations from the shapes shown in the drawings will be expected as a result of, for example, manufacturing techniques and / or tolerances. Therefore, the embodiments described herein should not be construed as limited to the specific shapes of the regions shown herein, but rather include deviations in shape caused, for example, by manufacturing processes. For example, regions illustrated or described as flat may typically have rough and / or non-linear characteristics. Furthermore, sharp corners illustrated may be rounded. Thus, the regions shown in the figures are schematic in nature, and their shapes are not intended to illustrate the precise shapes of the regions, nor are they intended to limit the scope of the claims.

[0103] To keep the following description of the embodiments of this disclosure clear and concise, detailed descriptions of known functions and known components are omitted.

[0104] The writing accuracy of capacitive styluses decreases at the edges of the screen, affecting writing and drawing input. The main reason is that the signal strength is lower at the edges of the display area. To address this, the touch pattern on the touch display panel can be extended further outwards at the edges of the display area. However, this compresses the wiring space for the touch leads in the peripheral area. When the touch leads are thin, it is impossible to set double-layer metal connection holes for the touch leads. When the thin touch leads break, it causes uneven capacitance during touch. Furthermore, the touch pattern in the peripheral area is smaller, and the connection space between the touch pattern and the touch leads is smaller. According to the design method of touch pattern and touch leads in the display area, the number of connection holes that can be set in the peripheral area is small, which can also easily lead to touch problems caused by uneven capacitance.

[0105] In view of the above, this disclosure provides a touch display panel, as shown in Figures 1A-1B, 2A-2C, and 3A-3D. Figure 2B is a schematic diagram of the film layer of one touch layer in Figure 2A; Figure 2C is a schematic diagram of the film layer of another touch layer in Figure 2A; Figure 3A is an enlarged view of the area within the dashed box S1 in Figure 2A; Figure 3B is an enlarged view of the area within the dashed box S2 in Figure 2A; Figure 3C is an enlarged view of the area within the dashed box S3 in Figure 2A; and Figure 3D is an enlarged view of the area within the dashed box S4 in Figure 2A. The touch display panel includes:

[0106] Substrate 1;

[0107] Display structure 2 is located on one side of substrate 1. Display structure 2 has display area AA and peripheral area BB located around display area AA.

[0108] The touch structure 3 is located on the side of the display structure 2 facing away from the substrate 1. The touch structure 3 includes: a plurality of main touch electrodes 31 and a plurality of auxiliary touch electrodes 32 extending in the same direction, a main touch lead 33 connected to the main touch electrodes 31, and an auxiliary touch lead 34 electrically connected to the auxiliary touch electrodes 32. At least a portion of the main touch electrodes 31 and at least a portion of the auxiliary touch electrodes 32 extend in the same direction, and at least a portion of the auxiliary touch electrodes 32 are located on at least one side of the main touch electrodes 31 perpendicular to the extension direction. The width a1 of the main touch electrodes 31 perpendicular to the extension direction is greater than the width a2 of the auxiliary touch electrodes 32 perpendicular to the extension direction.

[0109] Referring to Figures 4A-4D and 5A-5B, where Figure 4A is a schematic diagram of a main touch electrode 31 and its corresponding main via group, Figure 5A is a schematic diagram of an auxiliary touch electrode 32 and its corresponding auxiliary via group, Figure 4B is an enlarged schematic diagram of the dashed box S6 in Figure 4A, Figure 4C is a schematic diagram of the film layer of the first metal part of the touch lead in Figure 4B, Figure 4D is a schematic diagram of the film layer of the second metal part of the touch lead in Figure 4B, Figure 4E is a cross-sectional schematic diagram along the dashed line e1 in Figure 4B, and Figure 5B is a cross-sectional schematic diagram along the dashed line e2 in Figure 5A, wherein the main touch lead 33 has a main via group 35 in the area electrically connected to the main touch electrode 31, and the auxiliary touch lead 34 has an auxiliary via group 36 in the area electrically connected to the auxiliary touch electrode 32; the main via group 35 includes a plurality of main vias 350; and the auxiliary via group 36 includes a plurality of auxiliary vias 360.

[0110] Both the main touch lead 33 and the auxiliary touch lead 34 include: a first metal part TMA, a second metal part TMB located on the side of the first metal part TMA away from the substrate 1, and an insulating layer TMC located between the first metal part TMA and the second metal part TMB; the first metal part TMA and the second metal part TMB of the main touch lead 33 are connected through a main via 350; the first metal part TMA and the second metal part TMB of the auxiliary touch lead 34 are connected through an auxiliary via 360; the sum of the orthogonal projection areas of the main vias 350 in the main via group 35 on the substrate 1 is approximately equal to the sum of the orthogonal projection areas of the auxiliary vias 360 in the auxiliary via group 36 on the substrate 1.

[0111] In some embodiments, the touch structure 3 includes a first touch layer 301-1 and a second touch layer 301-2 located on the side of the first touch layer 301-1 opposite to the display structure 2; the touch structure 3 further includes a touch insulating layer 302 located between the first touch layer 301-1 and the second touch layer 301-2. A first metal portion TMA may be located in the first touch layer 301-1, and a second metal portion TMB may be located in the second touch layer 301-2.

[0112] In some embodiments, the display area AA includes a plurality of sub-pixels; as shown in FIG1B, the display structure 2 specifically includes: a pixel definition layer 105 and a plurality of light-emitting devices 104 located on one side of the substrate 1, a driving circuit layer 103 located between the light-emitting devices 104 and the substrate 1, and an encapsulation layer 102 located on the side of the pixel definition layer 105 and the light-emitting devices 104 facing away from the substrate 1; wherein, the light-emitting devices 104 correspond one-to-one with the sub-pixels.

[0113] In some embodiments, as shown in FIG1B, the light-emitting device 104 includes an anode 1041, a light-emitting functional layer 1042, and a cathode 1043 stacked together. The pixel definition layer 105 includes a plurality of opening regions 1051, each corresponding to a sub-pixel. The pixel definition layer 105 covers the edge of the anode 1041. The orthographic projection of the opening region 1051 onto the substrate 1 falls within the orthographic projection of the anode 1041 onto the substrate 1. The light-emitting functional layer 1042 is located on the side of the anode 1041 and the pixel definition layer 105 facing away from the substrate 1. The cathode 1043 is located on the side of the light-emitting functional layer 1042 facing away from the substrate 1.

[0114] In specific implementation, if the light-emitting device is an organic light-emitting diode, the light-emitting functional layer shall at least include an organic light-emitting layer, and may also include at least one of the following: an electron injection layer, a hole blocking layer, an electron transport layer, a hole transport layer, an electron blocking layer, and a hole injection layer.

[0115] In some embodiments, as shown in FIG1B, the driving circuit layer 103 includes a pixel driving circuit that corresponds one-to-one with the light-emitting device 104 and drives the light-emitting device 104 to emit light; the pixel driving circuit includes, for example, a thin-film transistor 1031 and a capacitor 1032. It should be noted that FIG1B only shows one thin-film transistor 1031 and one capacitor 1032. In specific implementations, the pixel driving circuit may also include a greater number of thin-film transistors and capacitors.

[0116] It should be noted that Figure 1B uses a thin-film transistor 1031 as an example with a top-gate structure, where the gate G is located on the side of the active layer 10311 facing away from the substrate 1; the first electrode 10321 of the capacitor 1032 is disposed in the same layer as the gate G, and the second electrode 10322 of the capacitor 1032 is located between the film layer containing the gate G and the film layers containing the source S and drain D; the display structure 2 also includes: a first buffer layer 1033 located between the substrate 1 and the active layer 10311, a first gate insulating layer 1034 located between the gate G and the active layer 10311, a second gate insulating layer 1035 located between the first electrode 10321 and the second electrode 10322, an interlayer insulating layer 1036 located between the second electrode 10322 and the source S and drain D, and a first planarization layer 106 located between the source S and drain D and the anode 1041.

[0117] In some embodiments, the anode is connected to the drain via a via that penetrates the first planarization layer.

[0118] Alternatively, in some embodiments, as shown in FIG1B, the structure 2 further includes a transition electrode 1039 located between the source S and drain D and the anode 1041, a passivation layer 1037 located between the source S and drain D and the transition electrode 1039, and a second planarization layer 1038 located between the passivation layer 1037 and the transition electrode 1039. The anode 1041 is connected to the transition electrode 1039 through a via penetrating the first planarization layer 106, and the transition electrode 1039 is connected to the drain D through a via penetrating the second planarization layer 1038 and the passivation layer 1037.

[0119] In some embodiments, as shown in FIG1B, the touch structure 3 further includes: a second buffer layer 303 located between the first touch layer 301-1 and the encapsulation layer 102, and a protective layer 304 located on the side of the second touch layer 301-2 facing away from the substrate 1.

[0120] The touch display panel provided in this embodiment adopts the FMLOC process, that is, the touch layer is directly fabricated on the stacked light-emitting structure layer and encapsulation layer, which can reduce the thickness of the touch display panel and help to achieve the thinning of touch display products.

[0121] In one possible implementation, referring to Figures 2A-2C, Figure 2B can be a first touch layer, and Figure 2C can be a second touch layer. The first touch layer can include multiple main touch electrodes 31 extending in the same direction and at least one auxiliary touch electrode 32. The second touch layer can also include multiple main touch electrodes 31 extending in the same direction and at least one auxiliary touch electrode 32. The main touch electrodes 31 and auxiliary touch electrodes 32 of the same touch layer extend in the same direction. Optionally, for example, as shown in Figures 2A-2C, the first touch layer may include multiple first main touch electrodes (Rx1, Rx2...Rxn-1) extending along the second direction Y, and multiple first auxiliary touch electrodes (Rx0, Rxn) extending along the second direction Y; the second touch layer may include multiple second main touch electrodes (Tx1, Tx2...Txn-1) extending along the first direction X, and multiple second auxiliary touch electrodes (Tx0, Txn) extending along the first direction X.

[0122] Referring to Figure 2B, in the first touch layer, multiple first main touch electrodes (Rx1, Rx2...Rxn-1) are arranged sequentially along the first direction X, and first auxiliary touch electrodes (Rx0, Rxn) are located on both sides of the multiple first main touch electrodes (Rx1, Rx2...Rxn-1). In the second direction Y, both the first main touch electrodes (Rx1, Rx2...Rxn-1) and the first auxiliary touch electrodes (Rx0, Rxn) extend beyond the display area AA to the peripheral area. Furthermore, in the first direction X, the first auxiliary touch electrodes (Rx0, Rxn) are partially located in the display area AA and partially in the peripheral area BB. Rx0, Rxn) includes: a first sub-electrode 321 and a second sub-electrode 322; the first sub-electrode 321 and the second sub-electrode 322 extend along the second direction Y and are arranged along the first direction X; the orthographic projection of the first sub-electrode 321 onto the substrate is located in the peripheral region BB; at least a portion of the orthographic projection of the second sub-electrode 322 onto the substrate is located in the display region AA. For example, along the second direction Y, the orthographic projection of the central region of the second sub-electrode 322 onto the substrate may be located in the display region AA, and the orthographic projections of the two ends onto the substrate may be located in the peripheral region BB. The central region may occupy 60% to 90% of the second sub-electrode 322. Similarly, referring to FIG2C, in the second touch layer, multiple first sub-electrodes... Two main touch electrodes (Tx1, Tx2...Txn-1) are arranged sequentially along the second direction Y, and second auxiliary touch electrodes (Tx0, Txn) are located on both sides of the multiple second main touch electrodes (Tx1, Tx2...Txn-1). In the first direction X, both the second main touch electrodes (Tx1, Tx2...Txn-1) and the second auxiliary touch electrodes (Tx0, Txn) extend beyond the display area AA to the peripheral area. In the second direction Y, the second auxiliary touch electrodes (Tx0, Txn) are partially located in the display area AA and partially in the peripheral area BB. The second auxiliary touch electrodes (Tx0, Txn) include: a third sub-electrode 32. 3, and a fourth sub-electrode 324; the third sub-electrode 323 and the fourth sub-electrode 324 extend along the first direction X and are arranged along the second direction Y; the orthographic projection of the third sub-electrode 323 onto the substrate is located in the peripheral area BB; at least a portion of the orthographic projection of the fourth sub-electrode 324 onto the substrate is located in the display area AA. For example, along the first direction X, the orthographic projection of the central region of the fourth sub-electrode 324 onto the substrate may be located in the display area AA, and the orthographic projections of the two ends onto the substrate may be located in the peripheral area BB. The central region may occupy 60% to 90% of the fourth sub-electrode 324. That is, the problem of reduced writing accuracy of capacitive active pens at the edge of the screen can be improved by expanding the touch pattern.

[0123] Optionally, for at least a portion of the main touch electrodes 31 and at least a portion of the auxiliary touch electrodes 32, the extension directions are the same, and the auxiliary touch electrodes 32 are located on at least one side of the main touch electrode 31 perpendicular to the extension direction. This can be because the main touch electrodes 31 and auxiliary touch electrodes 32 in the same touch layer have the same extension direction. For example, in the first touch layer, a plurality of first main touch electrodes (Rx1, Rx2...Rxn-1) and a plurality of first auxiliary touch electrodes (Rx0, Rxn) have the same extension direction, and the first... The auxiliary touch electrodes (Rx0, Rxn) are located on at least one side of the first main touch electrodes (Rx1, Rx2...Rxn-1) perpendicular to their extension direction; for example, in the second touch layer, the extension directions of the plurality of second main touch electrodes (Tx1, Tx2...Txn-1) and the plurality of second auxiliary touch electrodes (Tx0, Txn) are the same, and the second auxiliary touch electrodes (Tx0, Txn) are located on at least one side of the second main touch electrodes (Tx1, Tx2...Txn-1) perpendicular to their extension direction.

[0124] Optionally, the second main touch electrode (Tx1, Tx2...Txn-1) and the second auxiliary touch electrode (Tx0, Txn) can be driving electrodes; the first main touch electrode (Rx1, Rx2...Rxn-1) and the first auxiliary touch electrode (Rx0, Rxn) can be sensing electrodes. As shown in Figures 3A-3D, the first main touch electrode (Rx1, Rx2...Rxn-1), the first auxiliary touch electrode (Rx0, Rxn), the second main touch electrode (Tx1, Tx2...Txn-1), and the second auxiliary touch electrode (Tx0, Txn) can all be a grid-like structure composed of multiple intersecting metal traces. The isolation of different touch electrodes is achieved by disconnecting the grid-like metal traces at some locations.

[0125] Optionally, each of the first main touch electrode (Rx1, Rx2...Rxn-1), the first auxiliary touch electrode (Rx0, Rxn), the second main touch electrode (Tx1, Tx2...Txn-1), or the second auxiliary touch electrode (Tx0, Txn) can be electrically connected via touch leads (main touch leads 33 and / or auxiliary touch leads 34) corresponding to the peripheral area BB; wherein each touch lead (main touch lead 33 and / or auxiliary touch lead 34) is composed of a double-layer metal part, and the double-layer metal part is connected through connecting holes at some locations to reduce the resistance of the touch lead or prevent the problem of easy breakage of a single touch lead; In the control lead, a layer of metal portion near the corresponding electrically connected touch electrode can be integrally connected to the mesh-like metal trace of the touch electrode in the same layer, thereby realizing the electrical connection between the touch electrode and the touch lead. For example, referring to Figures 4A-4E, the trace R extending along the first direction X on the right side of Figure 4B is a part of the mesh-like metal trace of the main touch electrode 31 (Txn-1) in Figure 4A extending along the first direction X. This part of the metal trace is integrally connected to the second metal portion TMB of the adjacent main touch lead 33 in the same layer (as shown in Figure 4D), thereby realizing the electrical connection between the main touch lead 33 and the main touch electrode 31. Optionally, referring to Figures 4A-4B and Figure 5A, the first main touch electrode (Rx1, Rx2...Rxn-1) and the first auxiliary touch electrode (Rx0, Rxn) are in the same layer and made of the same material as the second metal part TMB; the first main touch electrode (Rx1, Rx2...Rxn-1) is directly electrically connected to the second metal part TMB of the main touch lead 33; the first auxiliary touch electrode (Rx0, Rxn) is directly electrically connected to the second metal part TMB of the auxiliary touch lead 34. Optionally, as shown in Figures 6A, 6B, and 6C, the second main touch electrode (Tx1, Tx2...Txn-1) and the second auxiliary touch electrode (Tx0, Txn) are in the same layer and made of the same material as the first metal part TMA; the second main touch electrode (Tx1, Tx2...Txn-1) is directly electrically connected to the first metal part TMA of the main touch lead 33; and the second auxiliary touch electrode (Tx0, Txn) is directly electrically connected to the first metal part TMA of the auxiliary touch lead 34.

[0126] The expansion of the touch pattern (e.g., an expansion of 0.3mm to 1mm) will compress the wiring space of the peripheral BB touch leads (the wiring space of the touch leads will be reduced by 0.3mm to 1mm), which will cause the pitch between the centers of two adjacent touch leads to be reduced significantly (pitch close to 10μm). When the touch leads are thin (around ~5μm), it is impossible to place the connection hole of two metal layers (e.g., the first metal part TMA and the second metal part TMB) on the touch leads (because when the process fluctuates, the connection hole may exceed the line width of the touch lead, resulting in poor reliability). Moreover, thinner touch leads may also have broken wire defects when the process fluctuates, causing uneven capacitance or defects during touch.

[0127] On the other hand, as shown in Figures 4A and 5A, the width a2 of the auxiliary touch electrode 32 (e.g., the first auxiliary touch electrode (Rx0, Rxn)) in the peripheral area BB in the direction perpendicular to the extension is smaller than the width a1 of the main touch electrode 31 (e.g., the first main touch electrode (Rx1, Rx2...Rxn-1)) in the direction perpendicular to the extension. Therefore, the connection space b2 between the auxiliary touch electrode 32 and the auxiliary touch lead 34 is smaller than the connection space b1 between the main touch electrode 31 and the main touch lead 33. If the conventional design method is followed (in the conventional design, the center distance between two adjacent connection holes is consistent, such as about 1 mm, and 4 connection holes are placed at each connection position between the touch lead and the touch electrode), for example, there are only 4 connection holes at the main touch electrode 31 (each main via 35... The size can be about 5*30um. The connection space b2 at the auxiliary touch electrode 32 is small. If the connection hole method (spacing, size) is the same as that at the main touch point 31, only 2 connection holes can be set at the auxiliary touch electrode 32. Moreover, there are no connection holes on the touch lead, which can easily lead to uneven capacitance. However, in this embodiment, by making the sum of the orthogonal projection areas of the main vias 350 in the main via group 35 on the substrate 1 approximately equal to the sum of the orthogonal projection areas of the auxiliary vias 360 in the auxiliary via group 36 on the substrate 1, the connection resistance between the auxiliary touch lead 34 and the auxiliary touch electrode 32 can be made approximately the same as the connection resistance between the main touch lead 33 and the main touch electrode 31. This improves the problem of poor touch performance caused by uneven touch capacitance between the peripheral area BB and the display area AA during touch.

[0128] In one possible implementation, referring to Figures 4A, 5A, 6A, and 6B, where Figure 4A is a schematic diagram of the main via at the first main touch electrode (Rx1) in the second touch layer, Figure 5A is a schematic diagram of the auxiliary via at the first auxiliary touch electrode (Rx0) in the second touch layer, and Figure 6A is a schematic diagram of the main and auxiliary vias at the first main touch electrode (Rx1) and the first auxiliary touch electrode (Rx0) in the first touch layer, the number of main vias 350 in the main via group 35 is the same as the number of auxiliary vias 360 in the auxiliary via group 36. For example, as shown in Figure 4A, the main touch lead 33 has 9 main vias 350 in the area electrically connected to the main touch electrode 31, and as shown in Figure 5A, the auxiliary touch lead 34 also has 9 main vias 350 in the area electrically connected to the auxiliary touch electrode 32. In this embodiment, by making the number of main vias 350 in the main via group 35 the same as the number of auxiliary vias 360 in the auxiliary via group 36, the connection resistance between the auxiliary touch lead 34 and the auxiliary touch electrode 32 can be made approximately the same as the connection resistance between the main touch lead 33 and the main touch electrode 31, thereby improving the problem of poor touch performance caused by uneven touch capacitance between the peripheral area BB and the display area AA during touch.

[0129] In one possible implementation, referring to Figures 4A, 5A, 6A, and 6B, the spacing c2 between two adjacent auxiliary vias 360 in the auxiliary via group 36 is smaller than the spacing c1 between two adjacent main vias 350 in the main via group 35. Thus, when the connection space b2 between the auxiliary touch electrode 32 and the auxiliary touch lead 34 is small, the number of main vias 350 in the main via group 35 can be made the same as the number of auxiliary vias 360 in the auxiliary via group 36.

[0130] In this embodiment of the present disclosure, as shown in Figures 4A, 5A, 6A, and 6B, when the connection space b2 between the auxiliary touch electrode 32 and the auxiliary touch lead 34 is smaller than the connection space b1 between the main touch electrode 31 and the main touch lead 33, by reducing the center distance between two adjacent auxiliary vias 360 on the auxiliary touch lead 34, the number of auxiliary vias 360 on the auxiliary touch lead 34 is made the same as the number of main vias 350 on the auxiliary touch lead 34. This makes the sum of the orthogonal projection areas of the main vias 350 in the main via group 35 on the substrate 0 approximately equal to the sum of the orthogonal projection areas of the auxiliary vias 360 in the auxiliary via group 36 on the substrate 1. This allows the connection resistance between the auxiliary touch lead 34 and the auxiliary touch electrode 32 to be approximately the same as the connection resistance between the main touch lead 33 and the main touch electrode 31, thus improving the touch malfunction problem caused by the uneven touch capacitance between the peripheral area BB and the display area AA during touch.

[0131] In one possible implementation, as shown in Figures 4A, 5A, 6A, and 6B, the size of the main via 350 in the main via group 35 can be the same as the size of the auxiliary via 360 in the auxiliary via group 36. For example, the width of the main via 350 in the direction perpendicular to the main touch lead 33 can be 2μm to 8μm, and the length of the via 350 in the direction parallel to the main touch lead 33 can be 20μm to 40μm; the width of the auxiliary via 360 in the direction perpendicular to the auxiliary touch lead 34 can be 2μm to 8μm, and the length of the auxiliary via 360 in the direction parallel to the auxiliary touch lead 34 can be 20μm to 40μm.

[0132] In one possible implementation, as shown in Figures 4A, 5A, 6A and 6B, the number of main vias 350 in the main via group 35 can be greater than or equal to 8; the number of auxiliary vias 360 in the auxiliary via group 36 can be greater than or equal to 8.

[0133] In one possible implementation, as shown in Figures 4A, 5A, 6A and 6B, the spacing c2 between two adjacent auxiliary vias 360 in the auxiliary via group 36 can be in the range of 80μm to 150μm. This does not affect the process and ensures that the connection resistance between the auxiliary touch lead 34 and the auxiliary touch electrode 32 is approximately the same as the connection resistance between the main touch lead 33 and the main touch electrode 31.

[0134] In one possible implementation, as shown in Figures 7A and 7B, the length e2 of the auxiliary via 360 along the extension direction of the auxiliary touch lead 34 is greater than the length e1 of the main via 350 along the extension direction of the main touch lead 33. In this embodiment, by making the length e2 of the auxiliary via 360 along the extension direction of the auxiliary touch lead 34 greater than the length e1 of the main via 350 along the extension direction of the main touch lead 33, the connection resistance between the auxiliary touch lead 34 and the auxiliary touch electrode 32 can be made approximately the same as the connection resistance between the main touch lead 33 and the main touch electrode 31. This improves the problem of poor touch response caused by uneven touch capacitance between the peripheral area BB and the display area AA during touch.

[0135] In one possible implementation, as shown in Figures 7A and 7B, the spacing c2 between two adjacent auxiliary vias 360 in the auxiliary via group 36 can be equal to the spacing c1 between two adjacent main vias 350 in the main via group 35.

[0136] In this embodiment of the present disclosure, as shown in Figures 7A and 7B, by making the spacing c2 between two adjacent auxiliary vias 360 in the auxiliary via group 36 equal to the spacing c1 between two adjacent main vias 350 in the main via group 35, and by making the length e2 of the auxiliary via 360 along the extension direction of the auxiliary touch lead 34 greater than the length e1 of the main via 350 along the extension direction of the main touch lead 33, that is, by enlarging the size of a single auxiliary via 360, the area of ​​the TLD connection holes is made consistent, so that the sum of the projected areas of the main vias 350 in the main via group 35 on the substrate 1 is approximately equal to the sum of the projected areas of the auxiliary vias 360 in the auxiliary via group 36 on the substrate 1, the connection resistance between the auxiliary touch lead 34 and the auxiliary touch electrode 32 is approximately the same as the connection resistance between the main touch lead 33 and the main touch electrode 31, thus improving the problem of poor touch performance caused by uneven touch capacitance between the peripheral area BB and the display area AA during touch.

[0137] In one possible implementation, referring to Figures 7A and 7B, the length of the auxiliary via 360 along the extension direction of the auxiliary touch lead 34 and the length of the main via 350 along the extension direction of the main touch lead 33 satisfy the following relationship:

[0138] e2 = m1 * e1 / m2, where e2 represents the length of the auxiliary via 360 along the extension direction of the auxiliary touch lead 34, e1 represents the length of the main via 350 along the extension direction of the main touch lead 33, m1 represents the number of main vias 350 in the main via group 35, and m2 represents the number of auxiliary vias 360 in the auxiliary via group 36.

[0139] In one possible implementation, as shown in Figures 7A and 7B, the number of auxiliary vias 360 in the auxiliary via group 36 is less than the number of main vias 350 in the main via group 35. Thus, when the length e2 of the auxiliary vias 360 along the extension direction of the auxiliary touch lead 34 is greater than the length e1 of the main vias 350 along the extension direction of the main touch lead 33, the sum of the projected areas of the main vias 350 in the main via group 35 on the substrate 1 can be made approximately equal to the sum of the projected areas of the auxiliary vias 360 in the auxiliary via group 36 on the substrate 1.

[0140] In one possible implementation, the connection resistance between the main touch lead 33 and the main touch electrode 31 can be made approximately the same simply by adjusting the number of main vias 350 in the main via group 35 to be the same as the number of auxiliary vias 360 in the auxiliary via group 36. This improves the touch performance issue caused by uneven touch capacitance between the peripheral area BB and the display area AA during touch. Referring to Figures 4A, 5A, 6A, and 6B, the touch display panel includes:

[0141] Substrate 1;

[0142] Display structure 2 is located on one side of substrate 1. Display structure 2 has display area AA and peripheral area BB located around display area AA.

[0143] The touch structure 3 is located on the side of the display structure 2 away from the substrate 1. The touch structure 3 includes: multiple main touch electrodes 31 and multiple auxiliary touch electrodes 32 with the same extension direction, as well as main touch leads 33 connected to the main touch electrodes 31 and auxiliary touch leads 34 electrically connected to the auxiliary touch electrodes 32. The width a1 of the main touch electrodes 31 in the direction perpendicular to the extension direction is greater than the width a2 of the auxiliary touch electrodes 32 in the direction perpendicular to the extension direction.

[0144] The main touch lead 33 has a main via group 35 in the area where it is electrically connected to the main touch electrode 31, and the auxiliary touch lead 34 has an auxiliary via group 36 in the area where it is electrically connected to the auxiliary touch electrode 32; the main via group 35 includes a plurality of main vias 350; the auxiliary via group 36 includes a plurality of auxiliary vias 360.

[0145] Both the main touch lead 33 and the auxiliary touch lead 34 include: a first metal part TMA, a second metal part TMB located on the side of the first metal part TMA away from the substrate 1, and an insulating layer TMC located between the first metal part TMA and the second metal part TMB; the first metal part TMA and the second metal part TMB of the main touch lead 33 are connected through a main via 350; the first metal part TMA and the second metal part TMB of the auxiliary touch lead 34 are connected through an auxiliary via 360; the number of main vias 350 in the main via group 35 is the same as the number of auxiliary vias 360 in the auxiliary via group 36, and the spacing c2 between two adjacent auxiliary vias 360 in the auxiliary via group 36 is smaller than the spacing c1 between two adjacent main vias 350 in the main via group 35.

[0146] In this embodiment, when the connection space b2 between the auxiliary touch electrode 32 and the auxiliary touch lead 34 is smaller than the connection space b1 between the main touch electrode 31 and the main touch lead 33, the center-to-center distance between two adjacent auxiliary vias 360 on the auxiliary touch lead 34 is reduced, so that the number of auxiliary vias 360 on the auxiliary touch lead 34 is the same as the number of main vias 350 on the auxiliary touch lead 34. This makes the connection resistance between the auxiliary touch lead 34 and the auxiliary touch electrode 32 approximately the same as the connection resistance between the main touch lead 33 and the main touch electrode 31, thus improving the problem of poor touch performance caused by uneven touch capacitance between the peripheral area BB and the display area AA during touch.

[0147] In one possible implementation, the connection resistance between the main touch lead 33 and the main touch electrode 31 can be made approximately the same by simply adjusting the size of the main via 350 in the main via group 35 and the size of the auxiliary via 360 in the auxiliary via group 36. This improves the touch performance issue caused by uneven touch capacitance between the peripheral area BB and the display area AA during touch. As shown in Figures 7A and 7B, the touch display panel includes:

[0148] Substrate 1;

[0149] Display structure 2 is located on one side of substrate 1. Display structure 2 has display area AA and peripheral area BB located around display area AA.

[0150] The touch structure 3 is located on the side of the display structure 2 away from the substrate 1. The touch structure 3 includes: multiple main touch electrodes 31 and multiple auxiliary touch electrodes 32 with the same extension direction, as well as main touch leads 33 connected to the main touch electrodes 31 and auxiliary touch leads 34 electrically connected to the auxiliary touch electrodes 32. The width a1 of the main touch electrodes 31 in the direction perpendicular to the extension direction is greater than the width a2 of the auxiliary touch electrodes 32 in the direction perpendicular to the extension direction.

[0151] The main touch lead 33 has a main via group 35 in the area where it is electrically connected to the main touch electrode 31, and the auxiliary touch lead 34 has an auxiliary via group 36 in the area where it is electrically connected to the auxiliary touch electrode 32; the main via group 35 includes a plurality of main vias 350; the auxiliary via group 36 includes a plurality of auxiliary vias 360.

[0152] Both the main touch lead 33 and the auxiliary touch lead 34 include: a first metal portion TMA, a second metal portion TMB located on the side of the first metal portion TMA away from the substrate 1, and an insulating layer TMC located between the first metal portion TMA and the second metal portion TMB; the first metal portion TMA and the second metal portion TMB of the main touch lead 33 are connected through a main via 350; the first metal portion TMA and the second metal portion TMB of the auxiliary touch lead 34 are connected through an auxiliary via 360; the length e2 of the auxiliary via 360 along the extension direction of the auxiliary touch lead 34 is greater than the length e1 of the main via 350 along the extension direction of the main touch lead 33; the length of the auxiliary via 360 along the extension direction of the auxiliary touch lead 34 and the length of the main via 350 along the extension direction of the main touch lead 33 satisfy the following relationship:

[0153] e2 = m1 * e1 / m2, where e2 represents the length of the auxiliary via 360 along the extension direction of the auxiliary touch lead 34, e1 represents the length of the main via 350 along the extension direction of the main touch lead 33, m1 represents the number of main vias 350 in the main via group 35, and m2 represents the number of auxiliary vias 360 in the auxiliary via group 36.

[0154] In this embodiment, when the connection space b2 between the auxiliary touch electrode 32 and the auxiliary touch lead 34 is smaller than the connection space b1 between the main touch electrode 31 and the main touch lead 33, the connection resistance between the auxiliary touch lead 34 and the auxiliary touch electrode 32 is made approximately the same as the connection resistance between the main touch lead 33 and the main touch electrode 31 by reducing the center distance between two adjacent auxiliary vias 360 on the auxiliary touch lead 34. This improves the problem of poor touch performance caused by uneven touch capacitance between the peripheral area BB and the display area AA during touch.

[0155] The expansion of the touch pattern compresses the wiring space of the peripheral BB touch leads, resulting in a reduction in the pitch between the centers of two adjacent touch leads. This makes it impossible to place a connection hole with two metal layers on the touch leads (because during process fluctuations, the connection hole may exceed the line width of the touch lead, leading to poor reliability). Furthermore, thinner touch leads may experience breakage during process fluctuations, causing uneven capacitance or other problems during touch operation; as shown in Figures 13A-13C, where Figure 13B is an enlarged view of the dashed box S51 in Figure 13A. Figure 3C is an enlarged view of the dashed box S52 in Figure 13A. The dashed boxes in Figures 13B and 13C are connection holes 370. Connection holes 370 are only placed at the touch electrode positions where the touch lead enters the display area AA (as shown in the dashed box in Figure 13B) (where the touch lead can be set wider), and at the bending positions (as shown in the dashed box in Figure 13C). However, placing connection holes only at these positions will result in a higher overall resistance of the touch lead and make it easy for single-layer wire breaks to occur, leading to poor signal transmission. In view of this, please refer to Figures 8A, 8B, 9A, 9B, 9C, 10A, 10B, 11A, 11B, 12A, and 12B. Figure 8B is an enlarged view of the dashed box S91 in Figure 8A; Figure 9B is one of the enlarged views of the dashed box S92 in Figure 9A; Figure 9C is another enlarged view of the dashed box S92 in Figure 9A; and Figure 10B... Figure 10A shows an enlarged view of the dashed box S93, Figure 11B shows an enlarged view of the dashed box S94 in Figure 11A, and Figure 12B shows an enlarged view of the dashed box S95 in Figure 12A. The touch structure 3 also includes: a plurality of spaced touch via groups 4; the touch via group 4 includes: a plurality of touch vias 40 staggered in sequence along the Z-direction of the main touch lead 33; the orthographic projection of the touch vias 40 on the substrate 1 is located within at least one of the orthographic projections of the main touch lead 33 and the auxiliary touch lead 34 on the substrate 1; the first metal part TMA and the second metal part TMB are also connected through the touch vias 40. In this embodiment of the disclosure, by setting multiple touch via groups 4 spaced apart, and making the touch via group 4 include multiple touch vias 40 distributed in a staggered manner, the parallel optimization of the first metal part TMA and the second metal part TMB of the touch lead can be achieved without increasing the width of the peripheral area BB. This can reduce the resistance of the touch lead, and avoid the problem of the wiring space of the touch lead shrinking due to the expansion of the touch pattern, which would cause the touch lead line width to become smaller, leading to the problem of easy wire breakage, as well as the problem of the touch lead line width being too small to set connection holes.

[0156] In one possible implementation, the touch via group 4 can be located on the lower border, upper border, left border, or right border of the peripheral area BB in Figure 2A. At least one set of touch via group 4 can be provided on the upper border, lower border, left border, or right border, or multiple sets of touch via group 4 can be provided on at least one of these three borders. When the touch via group 4 is located on the lower or upper border of the peripheral area BB in Figure 2A, the arrangement direction Z of the main touch lead 33 can be parallel to the second direction Y in Figure 2A; when the touch via group 4 is located on the left or right border of the peripheral area BB in Figure 2A, the arrangement direction Z of the main touch lead 33 can be parallel to the first direction X in Figure 2A.

[0157] In one possible implementation, as shown in Figures 8A, 8B, and 8C, the touch structure 3 includes a first axis k1 passing through the center of the touch via 40 and parallel to the Z-direction of the arrangement of multiple main touch leads 33; within the same touch via group 4, the first axes k1 of different touch vias 40 do not overlap. In the touch via group 4, the multiple touch vias 40 are staggered sequentially along the Z-direction of the arrangement of the main touch leads 33, which can be understood as the first axes k1 of two adjacent touch vias 40 along the Z-direction of the arrangement of the main touch leads 33 not overlapping.

[0158] In one possible implementation, as shown in Figures 8A, 8B, and 8C, the distance f1 between the first axis k1 of any two adjacent touch vias 40 in the same touch via group 4 is the same. This allows the touch vias 40 in the same touch via group 4 to be evenly distributed in the direction Z perpendicular to the arrangement direction of the multiple main touch leads 33.

[0159] In one possible implementation, as shown in Figures 8A, 8B, 9A, 9B, 9C, 10A, 10B, 11A, 11B, 12A, and 12B, the main touch lead 33 and / or the auxiliary touch lead 34 include: a main extension TM1 and a bent portion TM2; the maximum linewidth f2 of the bent portion TM2 in the direction perpendicular to the main touch lead 33 is greater than the linewidth f3 of the main extension TM1 in the direction perpendicular to the main touch lead 33; and the touch via 40 is located at the bent portion TM2. In this embodiment, the main touch lead 33 and / or the auxiliary touch lead 34 include a main extension TM1 and a bending portion TM2. The maximum linewidth f2 of the bending portion TM2 in the direction perpendicular to the main touch lead 33 is greater than the linewidth f3 of the main extension TM1 in the direction perpendicular to the main touch lead 33. The touch via 40 is set at the bending portion TM2. That is, by making a step design on the main touch lead 33 and / or the auxiliary touch lead 34, the increased wiring space is avoided. The parallel optimization of the first metal part TMA and the second metal part TMB of the touch lead can be achieved without increasing the width of the peripheral area BB. This can reduce the resistance of the touch lead, avoid the problem of easy wire breakage when the touch lead linewidth becomes smaller, and avoid the problem of not being able to set the connection hole (touch via 40).

[0160] In one possible implementation, referring to Figures 9A, 9B, 9C, 11A, 11B, 12A, and 12B, at least one bending portion TM2 includes: a connecting portion TM23, and a sub-bending portion (which may include two sub-bending portions, namely a first sub-bending portion TM21 and a second sub-bending portion TM22) located on at least one side of the connecting portion TM23; the connecting portion TM23 may be located between the first bending portion TM21 and the second bending portion TM22; the line width of the sub-bending portion in the direction perpendicular to the main touch lead 33 is greater than that of the connecting portion in the direction perpendicular to the main touch lead 33. The line width in the direction of line 33, that is, the line width f21 of the first sub-bend TM2 in the direction perpendicular to the main touch lead 33, is equal to the line width f22 of the second sub-bend TM22 in the direction perpendicular to the main touch lead 33, and both are greater than the line width f23 of the connecting part TM23 in the direction perpendicular to the main touch lead 33; the line width f23 of the connecting part T23 in the direction perpendicular to the main touch lead 33 can be equal to the line width f3 of the main extension TM1 in the direction perpendicular to the main touch lead 33; the touch via 40 is located at the first bend TM21 and / or the second bend TM22. In this embodiment, by providing two sub-bends with larger line widths on the main touch lead 33 and / or the auxiliary touch lead 34, it is beneficial to set the touch via 40, avoiding the problem that the line width of the main touch lead 33 and / or the auxiliary touch lead 34 is too small to set the touch via 40. That is, by setting the touch via 40 at both steps, the connection effect between the first metal part TMA and the second metal part TMB can be better.

[0161] In one possible implementation, as shown in Figures 8A, 8B, 10A, and 10B, the bending portion TM2 may consist of only one sub-bending portion TM20.

[0162] In one possible implementation, as shown in Figures 9A and 9B, the bending portion TM2 may include two sub-bending portions, namely a first sub-bending portion TM21 and a second sub-bending portion TM22; the first sub-bending portion TM21 and the second sub-bending portion TM22 are respectively located at both ends of the connecting portion TM23; the touch structure 3 includes a second axis k2 passing through the center of the connecting portion TM23 and perpendicular to the extending direction of the connecting portion TM23; the first sub-bending portion TM21 and the second sub-bending portion TM22 are symmetrically distributed about the second axis k2.

[0163] In one possible implementation, as shown in FIG9C, the main extension TM1 includes: a first outer edge w1 and a second outer edge w2; the sub-bending portions (first sub-bending portion TM21 and / or second sub-bending portion TM22) include: a third outer edge w3 and a fourth outer edge w4.

[0164] The extension directions of the first outer edge w1, the second outer edge w2, the third outer edge w3, and the fourth outer edge w4 are all parallel to the extension direction of the main extension TM1; the extension line of the third outer edge w3 coincides with the extension line of the first outer edge w1; the fourth outer edge w4 is located on the side of the extension line of the second outer edge w2 that is away from the first outer edge w1.

[0165] In one possible implementation, referring to FIG9C, the connecting portion TM23 includes: a fifth outer edge w5 and a sixth outer edge w6; both the fifth outer edge w5 and the sixth outer edge w6 are parallel to the extending direction of the connecting portion TM23; the fifth outer edge w5 is located in the region between the extension line of the third outer edge w3 and the extension line of the second outer edge w2; the sixth outer edge w6 coincides with the fourth outer edge w4.

[0166] In one possible implementation, as shown in FIG9C, the sub-bending portion (first sub-bending portion TM21 and / or second sub-bending portion TM22) further includes: a seventh outer edge w7 connecting the third outer edge w3 and the fifth outer edge w5, and an eighth outer edge w8 connecting the second outer edge w2 and the fourth outer edge w4; the seventh outer edge w7 is located on the side of the eighth outer edge w8 away from the second outer edge w2.

[0167] In one possible implementation, as shown in FIG9C, the extension direction of the seventh outer edge w7 is perpendicular to the extension direction of the first outer edge w1; the extension direction of the eighth outer edge w8 is perpendicular to the extension direction of the second outer edge w2.

[0168] In one possible implementation, as shown in Figures 10A, 10B, 11A, 11B, 12A, and 12B, the angle α1 formed by the seventh outer edge w7 and the first outer edge w1 ranges from 90° to 180°; the angle α2 formed by the eighth outer edge w8 and the second outer edge w2 ranges from 90° to 180°. In this embodiment, the angle α1 formed by the seventh outer edge w7 and the first outer edge w1 ranges from 90° to 180°; the angle α2 formed by the eighth outer edge w8 and the second outer edge w2 ranges from 90° to 180°. That is, the seventh outer edge w7 and the eighth outer edge w8 are beveled, which helps to reduce the length of the touch via 40 (since the size of the touch via 40 is reduced, the shape of the touch via 40 is kept as rectangular or rhomboid as possible). This allows the overall length of each touch via group 4 to be reduced as much as possible, occupying less space. More touch via groups 4 can be placed in a limited space, which can make the connection effect between the first metal part TMA and the second metal part TMB better.

[0169] In one possible implementation, referring to Figures 10A, 10B, 11A, 11B, 12A, and 12B, the orthogonal projection of the touch via 40 onto the substrate 1 includes: a first hole edge g1 opposite to the seventh outer edge w7, and a second hole edge g2 opposite to the eighth outer edge w8; the first hole edge g1 is parallel to the seventh outer edge w7, and the second hole edge g2 is parallel to the eighth outer edge w8.

[0170] In one possible implementation, as shown in Figures 8A, 8B, 9A, 9B, and 9C, the orthographic projection shape of the touch via 40 onto the substrate is rectangular; in another possible implementation, as shown in Figures 12A and 12B, the orthographic projection shape of the touch via 40 onto the substrate is parallelogram; in another possible implementation, the orthographic projection shape of the touch via 40 onto the substrate can also be rhombus; in yet another possible implementation, as shown in Figures 10A, 10B, 11A, and 11B, the orthographic projection shape of the touch via 40 onto the substrate can also be a rectangle with opposite corners removed.

[0171] Based on the same inventive concept, embodiments of the present invention also provide a touch display device, including the touch display panel as provided in the embodiments of the present invention. Implementation of this touch display device can refer to the embodiments of the touch display panel described above, and repeated details will not be repeated.

[0172] In specific implementations, in the embodiments of this disclosure, the touch display device can be any product or component with display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator. Other essential components of the display device are those that should be understood by those skilled in the art and will not be described in detail here, nor should they be construed as limiting this disclosure.

[0173] Although preferred embodiments of this disclosure have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this disclosure.

[0174] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A touch display panel, wherein, include: Substrate; A display structure is located on one side of the substrate, the display structure having a display area and a peripheral area located around the display area; A touch structure is located on the side of the display structure opposite to the substrate; the touch structure includes: a plurality of main touch electrodes and a plurality of auxiliary touch electrodes, as well as main touch leads connected to the main touch electrodes and auxiliary touch leads electrically connected to the auxiliary touch electrodes; at least a portion of the main touch electrodes and at least a portion of the auxiliary touch electrodes extend in the same direction, and at least a portion of the auxiliary touch electrodes are located on at least one side of the main touch electrodes perpendicular to the extension direction; the width of the main touch electrodes perpendicular to the extension direction is greater than the width of the auxiliary touch electrodes perpendicular to the extension direction. The main touch lead has a main via group in the area where it is electrically connected to the main touch electrode, and the auxiliary touch lead has an auxiliary via group in the area where it is electrically connected to the auxiliary touch electrode; the main via group includes a plurality of main vias; the auxiliary via group includes a plurality of auxiliary vias. Both the main touch lead and the auxiliary touch lead include: a first metal portion, a second metal portion located on the side of the first metal portion away from the substrate, and an insulating layer located between the first metal portion and the second metal portion; the first metal portion and the second metal portion of the main touch lead are connected through the main via; the first metal portion and the second metal portion of the auxiliary touch lead are connected through the auxiliary via; the sum of the orthographic projection areas of the main vias in the main via group on the substrate is approximately equal to the sum of the orthographic projection areas of the auxiliary vias in the auxiliary via group on the substrate.

2. The touch display panel as described in claim 1, wherein, The number of main vias in the main via group is the same as the number of auxiliary vias in the auxiliary via group.

3. The touch display panel as described in claim 2, wherein, The distance between two adjacent auxiliary vias in the auxiliary via group is less than the distance between two adjacent main vias in the main via group. 4.The touch display panel of claim 1, wherein, The length of the auxiliary via along the extension direction of the auxiliary touch lead is greater than the length of the main via along the extension direction of the main touch lead. 5.The touch display panel of claim 4, wherein, The length of the auxiliary via along the extension direction of the auxiliary touch lead and the length of the main via along the extension direction of the main touch lead satisfy the following relationship: e2 = m1 * e1 / m2, where e2 represents the length of the auxiliary via along the extension direction of the auxiliary touch lead, e1 represents the length of the main via along the extension direction of the main touch lead, m1 represents the number of main vias in the main via group, and m2 represents the number of auxiliary vias in the auxiliary via group. 6.The touch display panel of claim 4 or 5, wherein, The number of auxiliary vias in the auxiliary via group is less than the number of main vias in the main via group. 7.The touch display panel of any one of claims 4-6, wherein, The distance between two adjacent auxiliary vias in the auxiliary via group is equal to the distance between two adjacent main vias in the main via group.

8. A touch display panel, wherein, include: Substrate; A display structure is located on one side of the substrate, the display structure having a display area and a peripheral area located around the display area; A touch structure is located on the side of the display structure opposite to the substrate; the touch structure includes: a plurality of main touch electrodes and a plurality of auxiliary touch electrodes with the same extension direction, a main touch lead connected to the main touch electrodes, and an auxiliary touch lead electrically connected to the auxiliary touch electrodes; the width of the main touch electrodes in the direction perpendicular to the extension direction is greater than the width of the auxiliary touch electrodes in the direction perpendicular to the extension direction. The main touch lead has a main via group in the area where it is electrically connected to the main touch electrode, and the auxiliary touch lead has an auxiliary via group in the area where it is electrically connected to the auxiliary touch electrode; the main via group includes a plurality of main vias; the auxiliary via group includes a plurality of auxiliary vias. Both the main touch lead and the auxiliary touch lead include: a first metal portion, a second metal portion located on the side of the first metal portion away from the substrate, and an insulating layer located between the first metal portion and the second metal portion; the first metal portion and the second metal portion of the main touch lead are connected through the main via; the first metal portion and the second metal portion of the auxiliary touch lead are connected through the auxiliary via. The number of main vias in the main via group is the same as the number of auxiliary vias in the auxiliary via group; the distance between two adjacent auxiliary vias in the auxiliary via group is less than the distance between two adjacent main vias in the main via group. 9.A touch display panel, comprising: include: Substrate; A display structure is located on one side of the substrate, the display structure having a display area and a peripheral area located around the display area; A touch structure is located on the side of the display structure opposite to the substrate; the touch structure includes: a plurality of main touch electrodes and a plurality of auxiliary touch electrodes with the same extension direction, a main touch lead connected to the main touch electrodes, and an auxiliary touch lead electrically connected to the auxiliary touch electrodes; the width of the main touch electrodes in the direction perpendicular to the extension direction is greater than the width of the auxiliary touch electrodes in the direction perpendicular to the extension direction. The main touch lead has a main via group in the area where it is electrically connected to the main touch electrode, and the auxiliary touch lead has an auxiliary via group in the area where it is electrically connected to the auxiliary touch electrode; the main via group includes a plurality of main vias; the auxiliary via group includes a plurality of auxiliary vias. Both the main touch lead and the auxiliary touch lead include: a first metal portion, a second metal portion located on the side of the first metal portion away from the substrate, and an insulating layer located between the first metal portion and the second metal portion; the first metal portion and the second metal portion of the main touch lead are connected through the main via; the first metal portion and the second metal portion of the auxiliary touch lead are connected through the auxiliary via. The length of the auxiliary via along the extension direction of the auxiliary touch lead is greater than that of the main via. The length of the auxiliary via along the extension direction of the main touch lead and the length of the main via along the extension direction of the main touch lead satisfy the following relationship: e2 = m1 * e1 / m2, where e2 represents the length of the auxiliary via along the extension direction of the auxiliary touch lead, e1 represents the length of the main via along the extension direction of the main touch lead, m1 represents the number of main vias in the main via group, and m2 represents the number of auxiliary vias in the auxiliary via group.

10. The touch display panel as claimed in claim 9, wherein, The number of auxiliary vias in the auxiliary via group is less than the number of main vias in the main via group.

11. The touch display panel as claimed in claim 9 or 10, wherein, The distance between two adjacent auxiliary vias in the auxiliary via group is equal to the distance between two adjacent main vias in the main via group.

12. The touch display panel as described in any one of claims 1-11, wherein, The touch structure further includes: a plurality of spaced touch via groups; the touch via groups include: a plurality of touch vias that are staggered in sequence along the arrangement direction of the main touch leads; The orthographic projection of the touch via on the substrate is located within at least one of the orthographic projections of the main touch lead and the auxiliary touch lead on the substrate; the first metal portion and the second metal portion are also connected through the touch via.

13. The touch display panel as claimed in claim 12, wherein, The touch structure includes: a first axis passing through the center of the touch via and parallel to the arrangement direction of the plurality of main touch leads; In the same group of touch vias, the first axes of different touch vias do not overlap. 14.The touch display panel of claim 13, wherein, In the same group of touch vias, the distance between the first axis of any two adjacent touch vias is the same. 15.The touch display panel of claim 13 or 14, wherein, The main touch lead and / or the auxiliary touch lead includes: a main extension portion and a bent portion; the maximum linewidth of the bent portion in the direction perpendicular to the main touch lead is greater than the linewidth of the main extension portion in the direction perpendicular to the main touch lead; the touch via is located at the bent portion. 16.The touch display panel of claim 15, wherein, At least one of the bending portions includes: a connecting portion, and a sub-bending portion located on at least one side of the connecting portion; The line width of the sub-bend in the direction perpendicular to the main touch lead is greater than the line width of the connecting part in the direction perpendicular to the main touch lead; the touch via is located at the sub-bend.

17. The touch display panel as claimed in claim 15, wherein, The bending portion includes two sub-bending portions, namely a first sub-bending portion and a second sub-bending portion; the first sub-bending portion and the second sub-bending portion are respectively located at both ends of the connecting portion and are symmetrically distributed about a second axis, the second axis passing through the center of the connecting portion and perpendicular to the extension direction of the connecting portion.

18. The touch display panel as claimed in claim 16 or 17, wherein, The main extension includes a first outer edge and a second outer edge; the sub-bending portion includes a third outer edge and a fourth outer edge. The extension directions of the first outer edge, the second outer edge, the third outer edge, and the fourth outer edge are all parallel to the extension direction of the main extension portion; the extension line of the third outer edge coincides with the extension line of the first outer edge; the fourth outer edge is located on the side of the extension line of the second outer edge away from the first outer edge. 19.The touch display panel of claim 18, wherein, The connecting portion includes a fifth outer edge and a sixth outer edge; both the fifth outer edge and the sixth outer edge are parallel to the extending direction of the connecting portion. The fifth outer edge is located in the region between the extension line of the third outer edge and the extension line of the second outer edge; the sixth outer edge coincides with the fourth outer edge.

20. The touch display panel as claimed in claim 19, wherein, The sub-bending portion further includes: a seventh outer edge connecting the third outer edge and the fifth outer edge, and an eighth outer edge connecting the second outer edge and the fourth outer edge; The seventh outer edge is located on the side of the eighth outer edge that is away from the second outer edge.

21. The touch display panel as claimed in claim 20, wherein, The extension direction of the seventh outer edge is perpendicular to the extension direction of the first outer edge; the extension direction of the eighth outer edge is perpendicular to the extension direction of the second outer edge.

22. The touch display panel as claimed in claim 20, wherein, The angle between the seventh outer edge and the first outer edge ranges from 90° to 180°; the angle between the eighth outer edge and the second outer edge ranges from 90° to 180°.

23. The touch display panel as claimed in claim 22, wherein, The orthographic projection of the touch via on the substrate includes: a first hole edge opposite to the seventh outer edge, and a second hole edge opposite to the eighth outer edge; The edge of the first hole is parallel to the seventh outer edge, and the edge of the second hole is parallel to the eighth outer edge.

24. The touch display panel as described in any one of claims 1-23, wherein, The main touch electrode includes: a plurality of first main touch electrodes extending along a second direction; the auxiliary touch electrode includes: at least one first auxiliary touch electrode extending along the second direction, the first auxiliary touch electrode being located on at least one side of the plurality of first main touch electrodes along the first direction; the first main touch electrodes and the first auxiliary touch electrodes are located on the same layer; The first auxiliary touch electrode includes: a first sub-electrode and a second sub-electrode; the first sub-electrode and the second sub-electrode extend along the second direction and are arranged along the first direction; the orthographic projection of the first sub-electrode on the substrate is located in the peripheral area; at least a portion of the orthographic projection of the second sub-electrode on the substrate is located in the display area. 25.The touch display panel of claim 24, wherein, The first main touch electrode and the first auxiliary touch electrode are made of the same layer and material as the second metal part; The first main touch electrode is directly contacted and electrically connected to the second metal part of the main touch lead; the first auxiliary touch electrode is directly contacted and electrically connected to the second metal part of the auxiliary touch lead.

26. The touch display panel as described in any one of claims 1-25, wherein, The main touch electrode includes: a plurality of second main touch electrodes extending along a first direction; the auxiliary touch electrode includes: at least one second auxiliary touch electrode extending along the first direction, the second auxiliary touch electrode being located on at least one side of the plurality of second main touch electrodes along a second direction; the second main touch electrode and the second auxiliary touch electrode are located in the same layer; The second auxiliary touch electrode includes a third sub-electrode and a fourth sub-electrode; the third sub-electrode and the fourth sub-electrode extend along the first direction and are arranged along the second direction; the orthographic projection of the third sub-electrode on the substrate is located in the peripheral area; at least a portion of the orthographic projection of the fourth sub-electrode on the substrate is located in the display area. 27.The touch display panel of claim 26, wherein, The second main touch electrode and the second auxiliary touch electrode are made of the same layer and material as the first metal part; The second main touch electrode is directly contacted and electrically connected to the first metal part of the main touch lead; the second auxiliary touch electrode is directly contacted and electrically connected to the first metal part of the auxiliary touch lead.

28. A touch display device, wherein, Including the touch display panel as described in any one of claims 1-27.

Images