Display panel and display device

Abstract

The invention provides a display panel and a display device. The display panel comprises a fan-out area and a touch area which are arranged in the first direction. The fan-out area comprises a plurality of patch cords, the touch area comprises a plurality of touch electrode groups and touch wires which are arranged in the second direction, and each touch electrode group comprises a plurality of touch electrodes which are arranged in the first direction; the plurality of touch electrodes included in each touch electrode group comprise a first touch electrode and a second touch electrode, the first touch electrode is located in the first area, and the second touch electrode is located in the second area. The touch wires are electrically connected between the touch electrodes and the patch cords, and the number of the touch wires electrically connected between the second touch electrodes and the patch cords is larger than that of the touch wires electrically connected between the first touch electrodes and the patch cords. Wherein in the first touch electrode and the second touch electrode which are adjacently arranged in the same touch electrode group, the impedance of the patch cord electrically connected with the first touch electrode is smaller than that of the patch cord electrically connected with the second touch electrode.

Description

Technical Field

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

[0002] With the continuous development of display technology, the touch function has gradually become one of the necessary functions of the current display panel. In order to realize the touch function, the display panel usually includes structures such as touch electrodes arranged in an array. The normal operation of the touch electrodes and other structures needs to rely on the electrical signals provided by the touch wires to which they are connected, and the impedance of the above touch wires usually affects the quality of the electrical signals that the touch electrodes can receive (such as characteristics such as the high and low potential). Since the touch wire can transmit the electrical signal provided by the fan-out area wiring on the display panel to the touch electrode, the spacing between the touch electrode and the fan-out area can determine the length of the touch wire, and then determine the impedance of the touch wire. For example, the farther the touch electrode is from the fan-out area, the longer the length of the touch wire electrically connected to the touch electrode is, and the greater the impedance of the touch wire is. Therefore, for two touch electrodes located in different areas, the touch wires electrically connected to the two electrodes have different corresponding impedances when transmitting electrical signals, which easily leads to obvious differences between the working states corresponding to the two electrodes.

[0003] To address this problem, the prior art has adopted a technical solution of setting touch lines in different areas, which may include: for a touch electrode (called the first electrode) that is farther from the fan-out area, it is electrically connected to two touch lines; for a touch electrode (called the second electrode) that is closer to the fan-out area, it is electrically connected to one touch line. It should be noted that the two touch lines electrically connected to the first electrode can be regarded as parallel lines. Compared with the first electrode electrically connected to a single touch line, under this existing solution, the impedance of the touch line corresponding to the first electrode is smaller. At this time, the impedance difference corresponding to the touch lines electrically connected to the first electrode and the second electrode is reduced.

[0004] However, it should be noted that if the first electrode and the second electrode are adjacent in the direction close to the fan-out area, the length difference between the touch lines corresponding to the two electrodes is small, and because the impedance of the wiring in the parallel state is often significantly smaller than the impedance of a single wiring line, there is a large difference between the impedance of the touch line corresponding to the first electrode and the impedance of the touch line corresponding to the second electrode, which easily leads to obvious differences between the working states corresponding to the first electrode and the second electrode. Specifically, if the working state of the touch electrode can affect the display effect of the area where it is located, the difference between the working states corresponding to the first electrode and the second electrode respectively is likely to lead to differences in the display effects corresponding to the areas where the two electrodes are located, resulting in the appearance of a split screen phenomenon. Summary of the invention

[0005] In view of this, the present application provides a display panel and a display device to solve the above-mentioned problem of split screen phenomenon.

[0006] In a first aspect, an embodiment of the present application provides a display panel, comprising a fan-out area and a touch area arranged along a first direction, the fan-out area comprising a plurality of transfer lines; the touch area is divided into at least a first area and a second area arranged along the first direction, the first area being located between the second area and the fan-out area.

[0007] The touch areas include:

[0008] A plurality of touch electrode groups are arranged along a second direction, each touch electrode group includes a plurality of touch electrodes arranged along a first direction, and the first direction intersects with the second direction; the plurality of touch electrodes included in each touch electrode group include a first touch electrode and a second touch electrode, the first touch electrode is located in a first area and the second touch electrode is located in a second area.

[0009] Touch wiring, the touch wiring is electrically connected between the touch electrode and the adapter wire; the number of touch wiring electrically connected between the second touch electrode and the adapter wire is greater than the number of touch wiring electrically connected between the first touch electrode and the adapter wire;

[0010] Among the first touch electrodes and the second touch electrodes that are arranged adjacently in the same touch electrode group, the impedance of the switching wire electrically connected to the first touch electrodes is smaller than the impedance of the switching wire electrically connected to the second touch electrodes.

[0011] In a second aspect, an embodiment of the present application provides a display device, comprising a display panel provided in the first aspect.

[0012] The present application sets the impedance of the first adapter line to be smaller than the impedance of the second adapter line, which helps to reduce the difference between the total impedance of the connection wiring structure corresponding to the first touch electrode (including the touch wiring and the adapter line) and the total impedance of the connection wiring structure corresponding to the second touch electrode, and helps to eliminate the split-screen display phenomenon. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 is a schematic top view of a partial structure of a display panel related to the present application;

[0015] Figure 2 for Figure 1A bar diagram of the touch line impedances corresponding to different touch electrodes in the display panel shown;

[0016] Figure 3 A schematic top view of a partial structure of a display panel provided in the present application;

[0017] Figure 4 The impedance diagram corresponding to different adapters in the display panel provided in this application is shown;

[0018] Figure 5 A schematic top view of a partial structure of a display panel provided in the present application;

[0019] Figure 6 A schematic top view of a partial structure of a display panel provided in the present application;

[0020] Figure 7 is a schematic diagram of the distribution of connection vias between touch electrodes in a plurality of first touch electrode groups and touch traces;

[0021] Figure 8 A schematic diagram of the total impedance of the connection wiring structure corresponding to the touch electrode;

[0022] Fig. 9 A schematic top view of a partial structure of a display panel provided in the present application;

[0023] Fig.10 A schematic top view of a partial structure of a display panel provided in the present application;

[0024] Fig.11 for Fig.10 A schematic diagram showing the distribution of connecting vias between the touch electrodes in the second touch electrode group and the touch traces;

[0025] Fig.12 A schematic diagram of the total impedance of the connection wiring structure corresponding to the touch electrode;

[0026] Fig.13 A schematic top view of a partial structure of a display panel provided in the present application;

[0027] Fig.14 for Fig.13 A schematic diagram showing the distribution of connecting vias between the touch electrodes in the second touch electrode group and the touch traces;

[0028] Fig.15 A schematic diagram of the total impedance of the connection wiring structure corresponding to the touch electrode;

[0029] Fig.16 A schematic diagram of a display device provided in the present application. DETAILED DESCRIPTION

[0030] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0031] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0032] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0033] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0034] Figure 1 It is a schematic top view of a partial structure of a display panel related to the present application.

[0035] like Figure 1 As shown, a conventional display panel 00' is generally provided with a plurality of touch electrodes 11 arranged in an array and touch traces 12 electrically connected to the touch electrodes 11, and the touch electrodes 11 are electrically connected to the touch traces 12 through connecting vias H. The display panel 00' includes a plurality of touch electrode groups G arranged along a second direction Y, and a single touch electrode group G includes a plurality of touch electrodes 11 arranged along a first direction X. The touch traces 12 can electrically connect the touch electrodes 11 and the adapter wires 21 located in the fan-out area 01, and the touch traces 12 can transmit electrical signals on the adapter wires 21 to the touch electrodes 11 to drive the touch electrodes 11 to work. The impedance of the touch line 12 usually affects the electrical signal actually received by the touch electrode 11, and further affects the working state of the touch electrode 11. For example, the greater the impedance of the touch line 12, the lower the potential of the electrical signal actually received by the touch electrode 11, which may result in a weaker response of the touch electrode 11 (which may refer to the induction of touch operations).

[0036] It should be noted that the longer the length of the touch line 12 (the distance between the connection position of the touch line 12 with the touch electrode 11 and the adapter line 21) is, the greater the impedance corresponding to the touch line 12 is. Therefore, for the touch electrodes 11 distributed in different areas on the display panel 00', the impedances corresponding to the touch lines 12 connected to them are different, and then the total impedances of the connected line structures corresponding to them are different (the sum of the impedance of the touch line 12 and the impedance of the adapter line 21), and the working states corresponding to these touch electrodes 11 are also different.

[0037] To solve this problem, the prior art adopts a technical solution of connecting different numbers of touch lines 12 in different areas. Figure 1 As shown, the plurality of touch electrodes 11 include a first electrode 111 located in the first area 021 and a second electrode 112 located in the second area 022. The second electrode 112 is located on the side of the first electrode 111 away from the fan-out area 01. The first electrode 111 is electrically connected to one touch line 12, and the second electrode 112 is electrically connected to two touch lines 12. The two touch lines 12 connected to the second electrode 112 may be in a parallel state. Considering the parallel connection characteristics, the more touch lines 12 connected to a single touch electrode 11, the smaller the impedance of the touch line 12 connected to the touch electrode 11. Although the length of the touch line 12 corresponding to the second electrode 112 is greater than the length of the touch line 12 corresponding to the first electrode 111, since the number of touch lines 12 connected to the second electrode 112 is greater than the number of touch lines 12 connected to the first electrode 111, the difference between the impedance of the touch line 12 corresponding to the first electrode 111 and the impedance of the touch line 12 corresponding to the second electrode 112 is small.

[0038] Figure 2 for Figure 1 A bar diagram of the touch line impedances corresponding to different touch electrodes in the display panel is shown. Figure 2 , a schematic diagram of the impedance of the touch lines respectively corresponding to the multiple touch electrodes in the same touch electrode group is given, the horizontal axis represents the touch lines respectively corresponding to the multiple touch electrodes arranged along the first direction, and the vertical axis represents the impedance corresponding to the touch lines.

[0039] However, the above solution may easily cause a split screen phenomenon in some areas of the display panel 00', thereby reducing the display effect. Figure 1As shown, a single touch electrode group G includes a first electrode 111 (which may be referred to as a first edge electrode 111a) and a second electrode 112 (which may be referred to as a second edge electrode 112b) adjacent to each other in the first direction X. Since the first edge electrode 111a and the second edge electrode 112b are adjacent to each other, the difference in length between the touch lines 12 corresponding to the two touch electrodes 11 is small. Considering that the first edge electrode 111a is connected to a single touch line 12 and the second edge electrode 112b is connected to two touch lines 12, therefore, in combination with Figure 1 and Figure 2 , the total impedance R2 of the touch line 12 connected to the first edge electrode 111a can be greater than the total impedance R1 of the touch line 12 connected to the second edge electrode 112b, and the difference between the respective impedances is obvious. Figure 2 The touch line group 113a (including a single touch line 12) in the second edge electrode 112b corresponds to the touch line 12 connected to the second edge electrode 112b. Figure 2 The touch wiring group 114a (including two touch wirings 12) in FIG.

[0040] Therefore, the existing design scheme easily leads to obvious differences in the impedance of the touch lines 12 corresponding to the part of the touch electrodes 11 located at the boundary position (the first edge electrode 111a and the second edge electrode 112b mentioned above), which in turn causes obvious differences in the working states of the part of the touch electrodes 11. For example, when driving the first edge electrode 111a and the second edge electrode 112b to work, if the fan-out area 01 provides the same or similar driving voltages to the two, since the impedance of the touch line 12 corresponding to the first edge electrode 111a is significantly greater than the impedance of the touch line 12 corresponding to the second edge electrode 112b, the driving voltage actually received by the first edge electrode 111a is less than the driving voltage actually received by the second edge electrode 112b, and it is easy to have a phenomenon that the working state of the first edge electrode 111a and the working state of the second edge electrode 112b are significantly different.

[0041] Specifically, if the working state of the touch electrode 11 can affect the display state of the area corresponding to the touch electrode 11 (for example, the display panel 00' needs to display in an area based on the feedback of the touch electrode 11 in that area), then the above-mentioned existing design scheme is likely to cause obvious differences between the display state of the area where the first edge electrode 111a is located and the display state of the area where the second edge electrode 112b is located, causing a split screen phenomenon.

[0042] Figure 3 A schematic top view of a partial structure of a display panel provided in the present application.

[0043] In response to the above problems, Figure 3 As shown, the present application provides a display panel 10, including a fan-out area 01 and a touch area 02 arranged along a first direction X. The fan-out area 01 includes a plurality of adapter wires 21, and the adapter wires 21 can connect the chip and some wirings in the touch area 02, and can be used to transmit the electrical signal output by the chip to some structures in the touch area 02.

[0044] The touch area 02 is at least divided into a first area 021 and a second area 022 arranged along a first direction X. The first area 021 is located between the second area 022 and the fan-out area 01 .

[0045] Touch area 02 includes:

[0046] A plurality of touch electrode groups G are arranged along the second direction Y, and each touch electrode group G includes a plurality of touch electrodes 11 arranged along the first direction X, and the first direction X intersects the second direction Y. The plurality of touch electrodes 11 included in each touch electrode group G include a first touch electrode 111 and a second touch electrode 112, the first touch electrode 111 is located in the first area 021, and the second touch electrode 112 is located in the second area 022. Compared with the first touch electrode 111, the second touch electrode 112 has a larger spacing from the fan-out area 01.

[0047] Touch wiring 12, the touch wiring 12 is electrically connected between the touch electrode 11 and the adapter line 21, and the touch wiring 12 can be used to transmit the electrical signal (such as driving voltage) on the adapter line 21 to the touch electrode 11. A plurality of touch wirings 12 can extend along the first direction X and be arranged along the second direction Y. The number of touch wirings 12 electrically connected between the second touch electrode 112 and the adapter line 21 is greater than the number of touch wirings 12 electrically connected between the first touch electrode 111 and the adapter line 21. The greater the number of touch wirings 12 electrically connected between the touch electrode 11 and the adapter line 21, the smaller the impedance of the touch wiring 12 between the touch electrode 11 and the adapter line 21, and the smaller the loss of the electrical signal transmitted from the adapter line 21 to the touch electrode 11 during the transmission process. It should be noted that all the touch lines 11 (which can be called a touch line group) electrically connected to the same touch electrode 11 can correspond to the same adapter line 21, that is, the touch line group can correspond one-to-one to the adapter line 21, and the touch electrode 11 can correspond one-to-one to the adapter line 21.

[0048] Among them, in the adjacently arranged first touch electrodes 111 and second touch electrodes 112 included in the same touch electrode group G, the impedance of the adapter wire 21 (corresponding to the first adapter wire 21a) electrically connected to the first touch electrode 111 is smaller than the impedance of the adapter wire 21 (corresponding to the second adapter wire 21b) electrically connected to the second touch electrode 112.

[0049] Since the impedance of the touch routing 12 between the first touch electrode 111 and the adapter line 21 can be greater than the impedance of the touch routing 12 between the second touch electrode 112 and the adapter line 21, in order to reduce the impact of the impedance difference of the touch routing 12, the present application sets the impedance of the first adapter line 21a to be smaller than the impedance of the second adapter line 21b, which helps to reduce the difference between the total impedance of the connecting routing structure corresponding to the first touch electrode 111 (including the touch routing 12 and the adapter line 21) and the total impedance of the connecting routing structure corresponding to the second touch electrode 112.

[0050] Figure 4 The impedances corresponding to the different adapters in the display panel provided in this application are shown in FIG. Figure 4 , a schematic diagram of the impedance of the adapter wires respectively corresponding to the multiple touch electrodes in the same touch electrode group is given, the abscissa represents the multiple adapter wires arranged along the second direction, and the ordinate represents the impedance corresponding to the adapter wire.

[0051] It should be noted that if Figure 3 As shown, the above-mentioned touch wiring group (including all touch wirings electrically connected to the same touch electrode 11) can be arranged along the second direction Y, and the connection position between the adapter line 21 and the touch wiring group can be arranged along the second direction Y. Figure 3 and Figure 4 Based on the structural distribution characteristics in the fan-out area 01, considering that the adapter wires 21 and the touch wiring group can correspond one to one, different adapter wires 21 may have different corresponding extension lengths in the fan-out area 01, and thus different adapter wires 21 may have different corresponding impedances.

[0052] Therefore, the present application can utilize the characteristic that the impedances of different adapters 21 are different, and set the adapter 21 with higher impedance to connect with the touch wiring group with lower impedance, so as to make up for the difference between the total impedances of the connection wiring structures corresponding to some touch electrodes 11 (such as the first edge electrode 111a and the second edge electrode 112b). Among them, the present application can achieve the above effect by adaptively selecting the touch wiring group electrically connected to the touch electrode 11.

[0053] For example, it is known that the number of touch lines 12 in the touch line group electrically connected to the first edge electrode 111a may be less than the number of touch lines 12 in the touch line group electrically connected to the second edge electrode 112b, and the impedance of the touch line 12 corresponding to the first edge electrode 111a may be greater than the impedance of the touch line 12 corresponding to the second edge electrode 112b. Figure 3 and Figure 4Since the impedance R3 of the first adapter line 21a can be less than the impedance R4 of the second adapter line 21b, the first edge electrode 111a is electrically connected to the first adapter line 21a and the second edge electrode 112b is electrically connected to the second adapter line 21b. Since the first touch wiring group m1 is electrically connected to the first adapter line 21a and the second touch wiring group m2 is electrically connected to the second adapter line 21b, the above-mentioned priority setting method can be realized by setting the first edge electrode 111a to be electrically connected to the first touch wiring group m1 and the second edge electrode 112b to be electrically connected to the second touch wiring group m2.

[0054] Figure 5 A schematic top view of a partial structure of a display panel provided in the present application.

[0055] In one embodiment of the present application, Figure 5 As shown, the multiple touch electrode groups G include a first touch electrode group G1, and the first touch electrode group G1 is away from the edge of the display panel 10 in the second direction Y. Then the adapter line 21 corresponding to the touch electrode 11 in the first touch electrode group G1 can also be away from the edge of the display panel 10 in the second direction Y.

[0056] Along the direction from the second area 022 to the first area 021, the first touch electrode group G1 includes the 1st to the i-th second touch electrodes 112 and the 1st to the j-th first touch electrodes 111, where i and j are both integers greater than or equal to 2; the i-th second touch electrode 112 and the 1st first touch electrode 111 in the first touch electrode group G1 can both be adjacent to the boundary between the first area 021 and the second area 022.

[0057] The plurality of adapter wires 21 are divided into at least a plurality of adapter wire groups n, each of which includes a plurality of adapter wires 21. The plurality of adapter wire groups n include a first adapter wire group n1, which includes (i+j) adapter wires 21 electrically connected to different touch electrodes 11 in the first touch electrode group G1. Figure 4 and Figure 5 Among the adapter wires 21 included in the first adapter wire group n1, the farther away from the edge of the display panel 10, the smaller the impedance of the adapter wire 21 is. Therefore, the adapter wire 21 corresponding to the touch electrode 11 can be adaptively selected according to the number of touch traces 12 electrically connected to the touch electrode 11.

[0058] In the same first touch electrode group G1 , the adapter line 21 electrically connected to the first first touch electrode 111 is located in the second direction Y on a side of the adapter line 21 electrically connected to the i-th second touch electrode 112 away from the edge of the display panel 10 .

[0059] Since the number of touch lines 12 electrically connected to the first touch electrode 111 may be less than the number of touch lines 12 electrically connected to the second touch electrode 112, the impedance of the touch line 12 electrically connected to the first first touch electrode 111 may be greater than the impedance of the touch line 12 electrically connected to the ith second touch electrode 112. In order to reduce the difference between the total impedance of the connection line structure (including the touch line 12 and the adapter line 21) corresponding to the first first touch electrode 111 and the total impedance of the connection line structure corresponding to the ith second touch electrode 112, the embodiment of the present application selects to set the impedance of the first adapter line 21a corresponding to the first first touch electrode 111 to be less than the impedance of the second adapter line 21b corresponding to the ith second touch electrode 112, that is, the first adapter line 21a is located on the side of the second adapter line 21b away from the edge of the display panel 10 in the second direction Y.

[0060] In a possible implementation, the first touch electrode group G1 may include 5 first touch electrodes 111 and 31 second touch electrodes 112 , that is, i=31, j=5.

[0061] Figure 6 A schematic top view of a partial structure of a display panel provided in the present application. Figure 7 Schematic diagram of the distribution of connecting vias between the touch electrodes in the plurality of first touch electrode groups and the touch traces, for ease of understanding, Figure 7 Only the distribution of the touch electrodes in the first touch electrode group and the corresponding connecting vias is illustrated.

[0062] In one embodiment of the present application, Figure 6 and Figure 7 , the first to the i-th second touch electrodes 112 in the first touch electrode group G1 are electrically connected to the first to the i-th adapter wires 21 in the first adapter wire group n1, respectively, and the first to the i-th adapter wires 21 gradually approach the edge of the display panel 10 in the second direction Y. To ensure a good driving effect, in the first touch electrode group G1, the numerical difference between the total impedances of the connection wiring structures (including the touch wiring 12 and the adapter wire 21) respectively corresponding to two adjacent touch electrodes 11 can be small.

[0063] Considering that the number of touch lines 12 corresponding to two adjacent second touch electrodes 112 can be consistent and the length difference is small, in order to achieve the above-mentioned situation where the total impedance difference is small, the adapters 21 corresponding to the two adjacent second touch electrodes 112 can be arranged to be adjacent in the second direction Y. It should be noted that since the impedance of the second adapter 21b is greater than the impedance of the first adapter 21a, for the convenience of setting, the impedance of the adapter 21 (first type of adapter) to which the 1st to the i-th second touch electrodes 112 in the first touch electrode group G1 are respectively connected can be greater than the impedance of the first adapter 21a, that is, the first type of adapter can be located on the side of the first adapter 21a close to the edge of the display panel 10. Among them, the adapter 21 to which the 1st to the i-1th second touch electrodes 112 in the first touch electrode group G1 are respectively connected can be located on the side of the second adapter 21b away from the edge of the display panel 10.

[0064] For example, the (i-1)th second touch electrode 112 may be electrically connected to the third adapter line 21c, the third adapter line 21c is adjacent to the second adapter line 21b in the second direction Y, and the third adapter line 21c may be located on a side of the second adapter line 21b away from an edge of the display panel 10.

[0065] Combination Figure 6 and Figure 7 The 1st to jth first touch electrodes 111 in the first touch electrode group G1 are electrically connected to the i+1th to i+jth adapter wires 21 in the first adapter wire group n1, respectively, and the i+1th to i+jth adapter wires 21 gradually approach the edge of the display panel 10 in the second direction Y.

[0066] Considering that the number of touch lines 12 corresponding to two adjacent first touch electrodes 111 can be consistent and the length difference is small, in order to achieve the above-mentioned situation where the total impedance difference is small, the adapter wires 21 corresponding to the two adjacent first touch electrodes 111 can be arranged to be adjacent in the second direction Y. It should be noted that since the impedance of the second adapter wire 21b is greater than the impedance of the first adapter wire 21a, for the convenience of setting, the impedance of the adapter wire 21 (second type of adapter wire) to which the 1st to the jth first touch electrodes 111 in the first touch electrode group G1 are respectively connected can be smaller than the impedance of the second adapter wire 21b, that is, the above-mentioned second type of adapter wire can be located on the side of the second adapter wire 21b away from the edge of the display panel 10. Among them, the adapter wires 21 to which the 2nd to the jth first touch electrodes 111 in the first touch electrode group G1 are respectively connected can be located on the side of the first adapter wire 21a close to the edge of the display panel 10.

[0067] For example, the second first touch electrode 111 may be electrically connected to the fourth adapter line 21d, which is adjacent to the first adapter line 21a in the second direction Y and located on a side of the first adapter line 21a close to an edge of the display panel 10.

[0068] like Figure 7 As shown, in the same first touch electrode group G1, the connection vias H respectively corresponding to the plurality of second touch electrodes 112 may be arranged along the dotted line aa, and the connection vias H respectively corresponding to the plurality of first touch electrodes 111 may be arranged along the dotted line bb.

[0069] Figure 8 A schematic diagram of the total impedance of the connection wiring structure corresponding to the touch electrode. Figure 8 The solid lines in the figure illustrate the changing trend of the total impedance of the connection wiring structure corresponding to the touch electrodes in the first touch electrode group provided in the present application, and the dotted lines illustrate the changing trend of the total impedance of the connection wiring structure corresponding to some of the existing touch electrodes. The horizontal axis represents the connection wiring structure corresponding to the touch electrodes in the first touch electrode group, and the vertical axis represents the total impedance of the connection wiring structure.

[0070] Combination Figure 6 and Figure 8 In the present application, the total impedance of the connection wiring structure S1 corresponding to the i-th second touch electrode 112 is R6, and the total impedance of the connection wiring structure S2 corresponding to the first first touch electrode 111 is R5; in the prior art, the total impedance of the connection wiring structure S1 corresponding to the i-th second touch electrode 112 is R6, and the total impedance of the connection wiring structure S2 corresponding to the first first touch electrode 111 is R7. Analysis of the image shows that the difference between R6 and R5 is smaller than the difference between R7 and R6, that is, compared with the existing design, the configuration of the present application can reduce the impedance difference between the connection wiring structure S1 corresponding to the i-th second touch electrode 112 and the connection wiring structure S2 corresponding to the first first touch electrode 111, thereby avoiding the split screen phenomenon.

[0071] In one embodiment of the present application, Figure 6 As shown, along the second direction Y, the first adapter line 21 (corresponding to 211 in the figure) is adjacent to the i+jth adapter line 21 (corresponding to 21n in the figure), and the first adapter line 21 is located on the side of the i+jth adapter line 21 close to the edge of the display panel 10. The adapter lines 21 between the first adapter line 21 and the second adapter line 21b can all belong to the first type of adapter lines, and the adapter lines 21 between the first adapter line 21a and the i+jth adapter line 21 can all belong to the second type of adapter lines. Figure 6 and Figure 7Compared with other adapters 21 in the first category, the first adapter 21 (corresponding to 211 in the figure) is farthest from the edge of the display panel 10; compared with other adapters 21 in the second category, the i+jth adapter 21 (corresponding to 21n in the figure) is closest to the edge of the display panel 10. In the present application, by arranging the first adapter 21 to be located on the side of the i+jth adapter 21 close to the edge of the display panel 10, it is beneficial to reduce the total impedance difference of the connection wiring structure corresponding to adjacent touch electrodes 11, and at the same time reduce the complexity of wiring distribution.

[0072] Fig. 9 A schematic top view of a partial structure of a display panel provided in the present application.

[0073] In one embodiment of the present application, Fig. 9 As shown, the multiple touch electrode groups G also include a second touch electrode group G2, and the second touch electrode group G2 is located on the side of the edge of the first touch electrode group G1 close to the display panel 10 in the second direction Y. The adapter wire 21 corresponding to the touch electrode 11 in the second touch electrode group G2 can also be located on the edge of the first adapter wire group n1 close to the display panel 10 in the second direction Y.

[0074] Along the direction from the second area 022 to the first area 021, the second touch electrode group G2 includes the 1st to the i-th second touch electrodes 112 and the 1st to the j-th first touch electrodes 111. The i-th second touch electrode 112 and the 1st first touch electrode 111 in the second touch electrode group G2 may both be adjacent to the boundary between the first area 021 and the second area 022.

[0075] The plurality of adapter wire groups n include a second adapter wire group n2, and the second adapter wire group n2 includes (i+j) adapter wires 21 electrically connected to different touch electrodes 11 in the second touch electrode group G2. Figure 4 and Fig. 9 Among the adapter wires 21 included in the second adapter wire group n2, the farther away from the edge of the display panel 10, the greater the impedance of the adapter wire 21. Therefore, the adapter wire 21 corresponding to the touch electrode 11 can be adaptively selected according to the number of touch traces 12 electrically connected to the touch electrode 11.

[0076] In the same second touch electrode group G2 , the adapter line 21 electrically connected to the first first touch electrode 111 is located in the second direction Y on a side of the adapter line 21 electrically connected to the i-th second touch electrode 112 close to the edge of the display panel 10 .

[0077] In the second touch electrode group G2, in order to reduce the difference between the total impedance of the connecting wiring structure (including the touch wiring 12 and the adapter wire 21) corresponding to the first first touch electrode 111 and the total impedance of the connecting wiring structure corresponding to the i-th second touch electrode 112, the embodiment of the present application chooses to set the impedance of the fifth adapter wire 21e corresponding to the first first touch electrode 111 to be smaller than the impedance of the sixth adapter wire 21f corresponding to the i-th second touch electrode 112, that is, the fifth adapter wire 21e is located on the side of the sixth adapter wire 21f close to the edge of the display panel 10 in the second direction Y.

[0078] In a possible implementation, the second touch electrode group G2 may include 5 first touch electrodes 111 and 31 second touch electrodes 112 , that is, i=31, j=5.

[0079] Fig.10 A schematic top view of a partial structure of a display panel provided in the present application.

[0080] In one embodiment of the present application, Fig.10 As shown, the first to the i-th second touch electrodes 112 in the second touch electrode group G2 are electrically connected to the first to the i-th adapter wires 21 in the second adapter wire group n2, respectively, and the first to the i-th adapter wires 21 gradually approach the edge of the display panel 10 in the second direction Y. To ensure a good driving effect, in the second touch electrode group G2, the numerical difference between the total impedances of the connection wiring structures (including the touch wiring 12 and the adapter wire 21) respectively corresponding to two adjacent touch electrodes 11 can be small.

[0081] In the second touch electrode group G2, considering that the number of touch lines 12 corresponding to two adjacent second touch electrodes 112 can be the same and the length difference is small, in order to achieve the above-mentioned situation of small total impedance difference, the adapter wires 21 corresponding to the two adjacent second touch electrodes 112 can be arranged to be adjacent in the second direction Y. It should be noted that, since the impedance of the sixth adapter wire 21f is greater than the impedance of the fifth adapter wire 21e, for the convenience of setting, the impedance of the adapter wires 21 (third type of adapter wires) respectively connected to the first to the i-th second touch electrodes 112 in the second touch electrode group G2 can be greater than the impedance of the fifth adapter wire 21e, that is, the third type of adapter wires can be located on the side of the fifth adapter wire 21e close to the edge of the display panel 10. Among them, the adapter wires 21 respectively connected to the first to the i-1th second touch electrodes 112 in the second touch electrode group G2 can be located on the side of the sixth adapter wire 21f close to the edge of the display panel 10.

[0082] For example, the (i-1)th second touch electrode 112 may be electrically connected to the seventh patch line 21g, which is adjacent to the sixth patch line 21f in the second direction Y and is located on a side of the sixth patch line 21f close to an edge of the display panel 10.

[0083] The 1st to jth first touch electrodes 111 in the first touch electrode group G1 are electrically connected to the i+1th to i+jth adapter wires 21 in the first adapter wire group n1 respectively. The i+1th to i+jth adapter wires 21 gradually approach the edge of the display panel 10 in the second direction Y.

[0084] Considering that the number of touch lines 12 corresponding to two adjacent first touch electrodes 111 can be consistent and the length difference is small, in order to achieve the above-mentioned situation where the total impedance difference is small, the adapter wires 21 corresponding to the two adjacent first touch electrodes 111 can be set to be adjacent in the second direction Y. It should be noted that since the impedance of the sixth adapter wire 21f is greater than the impedance of the fifth adapter wire 21e, for the convenience of setting, the impedance of the adapter wire 21 (the fourth type of adapter wire) to which the 1st to the jth first touch electrodes 111 are respectively connected can also be smaller than the impedance of the sixth adapter wire 21f, that is, the fourth type of adapter wires are all located on the side of the sixth adapter wire 21f close to the edge of the display panel 10. Among them, the adapter wires 21 to which the 2nd to the jth first touch electrodes 111 in the second touch electrode group G2 are respectively connected can all be located on the side of the fifth adapter wire 21e close to the edge of the display panel 10.

[0085] For example, the j-th first touch electrode 111 may be electrically connected to the eighth transition line 21 h , and the eighth transition line 21 h is located on a side of the fifth transition line 21 e close to the edge of the display panel 10 .

[0086] Fig.11 for Fig.10 A schematic diagram showing the distribution of connecting vias between the touch electrodes in the second touch electrode group and the touch traces.

[0087] like Fig.11 As shown, in the same second touch electrode group G2, the connection vias H respectively corresponding to the plurality of second touch electrodes 112 may be arranged along the dotted line cc, and the connection vias H respectively corresponding to the plurality of first touch electrodes 111 may be arranged along the dotted line dd.

[0088] Fig.12 A schematic diagram of the total impedance of the connection wiring structure corresponding to the touch electrode. Fig.12The solid line shown in the figure illustrates the change trend of the total impedance of the connection wiring structure corresponding to the touch electrodes in the second touch electrode group provided by the present application, and the dotted line illustrates the change trend of the total impedance of the connection wiring structure corresponding to some of the existing touch electrodes. The horizontal axis represents the connection wiring structure corresponding to the touch electrodes in the second touch electrode group, and the vertical axis represents the total impedance of the connection wiring structure.

[0089] Combination Fig.10 and Fig.12 In the present application, the total impedance of the connection wiring structure S1 corresponding to the i-th second touch electrode 112 in the second touch electrode group G2 is R8, and the total impedance of the connection wiring structure S2 corresponding to the first first touch electrode 111 is R9; in the prior art, the total impedance of the connection wiring structure S1 corresponding to the i-th second touch electrode 112 is R10, and the total impedance of the connection wiring structure S2 corresponding to the first first touch electrode 111 is R11. It can be seen from the analysis image that the difference between R9 and R8 is smaller than the difference between R11 and R10, that is, compared with the existing design, the setting method of the present application can reduce the impedance difference between the connection wiring structure S1 corresponding to the i-th second touch electrode 112 and the connection wiring structure S2 corresponding to the first first touch electrode 111, thereby avoiding the split screen phenomenon.

[0090] In one embodiment of the present application, Fig.10 As shown, along the second direction Y, the first adapter line 21 is adjacent to the i+1th adapter line 21, and the first adapter line 21 is located on the side of the i+1th adapter line 21 away from the edge of the display panel 10. The adapter lines 21 between the first adapter line 21 to the sixth adapter line 21f can all belong to the third type of adapter lines, and the adapter lines 21 between the fifth adapter line 21e to the i+jth adapter line 21 can all belong to the fourth type of adapter lines. Fig.10 and Fig.11 , compared with other adapters 21 in the third category of adapters, the first adapter 21 is closest to the edge of the display panel 10; compared with other adapters 21 in the fourth category of adapters, the (i+1)th adapter 21 (fifth adapter 21e) is farthest from the edge of the display panel 10. The present application arranges the first adapter 21 to be located on the side of the (i+1)th adapter 21 close to the edge of the display panel 10, which is conducive to reducing the total impedance difference of the connection wiring structure corresponding to adjacent touch electrodes 11, and at the same time reducing the complexity of wiring distribution.

[0091] Fig.13 A schematic top view of a partial structure of a display panel provided in the present application. Fig.14 for Fig.13A schematic diagram showing the distribution of connecting vias between the touch electrodes in the second touch electrode group and the touch traces.

[0092] In one embodiment of the present application, Fig.13 As shown, the 1st to kth second touch electrodes 112 in the second touch electrode group G2 are electrically connected to the 1st to kth adapter wires 21 in the second adapter wire group n2, respectively, and the k+1th to ith second touch electrodes 112 in the second touch electrode group G2 are electrically connected to the k+1th to ith adapter wires 21 in the second adapter wire group n2, respectively. The 1st to kth adapter wires 21 gradually approach the edge of the display panel 10 in the second direction Y, and the k+1th to ith adapter wires 21 gradually move away from the edge of the display panel 10 in the second direction Y. Wherein, 3≤k+1<i, and k is an integer. Combined Fig.13 and Fig.14 The connecting vias H (used to connect the touch electrodes 11 and the touch traces 12 ) corresponding to the kth to the first second touch electrodes 112 in the second touch electrode group G2 are gradually away from the edge of the display panel 10 in the second direction Y.

[0093] The 1st to jth first touch electrodes 111 in the second touch electrode group G2 are electrically connected to the i+1th to i+jth adapter wires 21 in the second adapter wire group n2, respectively. The i+1th to i+jth adapter wires 21 gradually move away from the edge of the display panel 10 in the second direction Y. Fig.13 and Fig.14 The connecting vias H corresponding to the 1st to the jth first touch electrodes 111 in the second touch electrode group G2 are gradually away from the edge of the display panel 10 in the second direction Y.

[0094] Combination Fig.13 and Fig.14 , the display panel 10 may include a profiled edge region A, and the edge shape of the display panel 10 in the profiled edge region A may include an arc shape or the like. It should be noted that, for process reasons, the closer to the profiled edge region A, the more difficult it is to set the vias on the display panel 10. Therefore, in the present application, by setting the 1st to the kth adapter lines 21 gradually approaching the edge of the display panel 10 in the second direction Y and the i+1th to the i+jth adapter lines 21 gradually moving away from the edge of the display panel 10 in the second direction Y, it is helpful to achieve that the connecting vias H avoid the profiled edge region A, thereby reducing the difficulty of preparation.

[0095] In a possible implementation, k=11, i=31, and j=5.

[0096] In one embodiment of the present application, Fig.13As shown, along the second direction Y, the first adapter line 21 is adjacent to the (i+1)th adapter line 21 , and the first adapter line 21 is located on a side of the (i+1)th adapter line 21 close to the edge of the display panel 10 .

[0097] The j+1th adapter line 21 is adjacent to the i+jth adapter line 21 , and the j+1th adapter line 21 is located on a side of the i+jth adapter line 21 away from the edge of the display panel 10 .

[0098] The adapters 21 between the first adapter 21 and the kth adapter 21 can all belong to the first sub-category of adapters, the adapters 21 between the k+1th adapter 21 and the sixth adapter 21f can all belong to the second sub-category of adapters, and the adapters 21 between the fifth adapter 21e and the i+jth adapter 21 can all belong to the fourth sub-category of adapters. Fig.13 and Fig.14 Compared with other adapter wires 21 in the first subcategory of adapter wires, the first adapter wire 21 is farthest from the edge of the display panel 10; compared with other adapter wires 21 in the second subcategory of adapter wires, the k+1th adapter wire 21 is closest to the edge of the display panel 10; compared with other adapter wires 21 in the fourth category of adapter wires, the i+1th adapter wire 21 (the fifth adapter wire 21e) is closest to the edge of the display panel 10, and the i+jth adapter wire 21 is farthest from the edge of the display panel 10.

[0099] Fig.15 A schematic diagram of the total impedance of the connection wiring structure corresponding to the touch electrode. Fig.15 The solid line shown in the figure illustrates the change trend of the total impedance of the connection wiring structure corresponding to the touch electrodes in the second touch electrode group provided by the present application, and the dotted line illustrates the change trend of the total impedance of the connection wiring structure corresponding to some of the existing touch electrodes. The horizontal axis represents the connection wiring structure corresponding to the touch electrodes in the second touch electrode group, and the vertical axis represents the total impedance of the connection wiring structure.

[0100] Combination Fig.13 and Fig.15In the present application, the total impedance of the connection wiring structure S1 corresponding to the i-th second touch electrode 112 in the second touch electrode group G2 is R12, and the total impedance of the connection wiring structure S2 corresponding to the first first touch electrode 111 is R13; in the prior art, the total impedance of the connection wiring structure S1 corresponding to the i-th second touch electrode 112 is R14, and the total impedance of the connection wiring structure S2 corresponding to the first first touch electrode 111 is R13. It can be seen from the analysis image that the difference between R12 and R13 is smaller than the difference between R14 and R13, that is, compared with the existing design, the setting method of the present application can reduce the impedance difference between the connection wiring structure S1 corresponding to the i-th second touch electrode 112 and the connection wiring structure S2 corresponding to the first first touch electrode 111, thereby avoiding the split screen phenomenon.

[0101] Fig.16 A schematic diagram of a display device provided in the present application.

[0102] The present application provides a display device 20, such as Fig.16 As shown, the display device 20 includes the above-mentioned display panel 10. The display device 20 may be a mobile phone, or may be an electronic device such as a computer or a television.

[0103] The split-screen phenomenon that occurs during the display process of the display device 20 provided in the embodiment of the present application is greatly improved.

[0104] In this specification, the same or similar parts between the various embodiments can be referred to each other. In particular, for the device embodiment and the terminal embodiment, since they are basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the description in the method embodiment.

Claims

1. A display panel, characterized in that: It includes a fan-out area and a touch area arranged along a first direction, wherein the fan-out area includes a plurality of patch cords; the touch area is at least divided into a first area and a second area arranged along the first direction, wherein the first area is located between the second area and the fan-out area; The touch area includes: a plurality of touch electrode groups arranged along a second direction, each of the touch electrode groups including a plurality of touch electrodes arranged along the first direction, the first direction intersecting the second direction; the plurality of touch electrodes included in each of the touch electrode groups including a first touch electrode and a second touch electrode, the first touch electrode being located in the first area and the second touch electrode being located in the second area; Touch wiring, the touch wiring is electrically connected between the touch electrode and the adapter wire; the number of the touch wiring electrically connected between the second touch electrode and the adapter wire is greater than the number of the touch wiring electrically connected between the first touch electrode and the adapter wire; Among the first touch electrodes and the second touch electrodes that are adjacently arranged and included in the same touch electrode group, the impedance of the adapter wire electrically connected to the first touch electrode is smaller than the impedance of the adapter wire electrically connected to the second touch electrode.

2. The display panel according to claim 1, characterized in that: The plurality of touch electrode groups include a first touch electrode group, the first touch electrode group is away from the edge of the display panel in the second direction; along the direction from the second area to the first area, the first touch electrode group includes the 1st to the i-th second touch electrodes and the 1st to the j-th first touch electrodes; i and j are both integers greater than or equal to 2; The plurality of adapter wires are at least divided into a plurality of adapter wire groups, each of which includes a plurality of adapter wires; the plurality of adapter wire groups include a first adapter wire group, the first adapter wire group includes (i+j) adapter wires respectively electrically connected to different touch electrodes in the first touch electrode group; Among them, in the same first touch electrode group, the adapter wire electrically connected to the first first touch electrode is located in the second direction on a side of the adapter wire electrically connected to the ith second touch electrode away from an edge of the display panel.

3. The display panel according to claim 2, characterized in that: The first to the i-th second touch electrodes in the first touch electrode group are electrically connected to the first to the i-th adapter wires in the first adapter wire group, respectively, and the first to the i-th adapter wires gradually approach the edge of the display panel in the second direction; The 1st to jth first touch electrodes in the first touch electrode group are electrically connected to the i+1th to i+jth adapter wires in the first adapter wire group, respectively, and the i+1th to i+jth adapter wires gradually approach the edge of the display panel in the second direction.

4. The display panel according to claim 3, characterized in that: Along the second direction, the first adapter line is adjacent to the (i+j)th adapter line, and the first adapter line is located on a side of the (i+j)th adapter line close to an edge of the display panel.

5. The display panel according to claim 2, characterized in that: The plurality of touch electrode groups further include a second touch electrode group, the second touch electrode group being located on a side of the first touch electrode group close to an edge of the display panel in the second direction; along a direction from the second area to the first area, the second touch electrode group includes the first to i-th second touch electrodes and the first to j-th first touch electrodes; The plurality of adapter wire groups include a second adapter wire group, wherein the second adapter wire group includes (i+j) adapter wires respectively electrically connected to different touch electrodes in the second touch electrode group; Among them, in the same second touch electrode group, the adapter wire electrically connected to the first first touch electrode is located on a side of the adapter wire electrically connected to the ith second touch electrode close to the edge of the display panel in the second direction.

6. The display panel according to claim 5, characterized in that: The first to the i-th second touch electrodes in the second touch electrode group are electrically connected to the first to the i-th adapter wires in the second adapter wire group, respectively, and the first to the i-th adapter wires are gradually away from the edge of the display panel in the second direction; The 1st to jth first touch electrodes in the second touch electrode group are electrically connected to the i+1th to i+jth adapter wires in the second adapter wire group, respectively, and the i+1th to i+jth adapter wires gradually approach the edge of the display panel in the second direction.

7. The display panel according to claim 6, characterized in that: Along the second direction, the first adapter line is adjacent to the (i+1)th adapter line, and the first adapter line is located on a side of the (i+1)th adapter line away from an edge of the display panel.

8. The display panel according to claim 5, characterized in that: The 1st to kth second touch electrodes in the second touch electrode group are electrically connected to the 1st to kth adapter wires in the second adapter wire group, respectively, and the k+1th to ith second touch electrodes in the second touch electrode group are electrically connected to the k+1th to ith adapter wires in the second adapter wire group, respectively; the 1st to kth adapter wires gradually approach the edge of the display panel in the second direction, and the k+1th to ith adapter wires gradually move away from the edge of the display panel in the second direction; wherein 3≤k+1<i, and k is an integer; The 1st to jth first touch electrodes in the second touch electrode group are electrically connected to the i+1th to i+jth adapter wires in the second adapter wire group, respectively, and the i+1th to i+jth adapter wires gradually move away from the edge of the display panel in the second direction.

9. The display panel according to claim 8, characterized in that: Along the second direction, the first adapter line is adjacent to the (i+1)th adapter line, and the first adapter line is located on a side of the (i+1)th adapter line close to an edge of the display panel; The j+1th adapter line is adjacent to the i+jth adapter line, and the j+1th adapter line is located on a side of the i+jth adapter line away from an edge of the display panel.

10. A display device, characterized in that: Comprising a display panel as described in any one of claims 1-9.

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