Touch panel and display panel

Abstract

The application provides a touch panel and a display panel, and relates to the technical field of touch control. The touch panel has a first area and a second area which is arranged adjacent to the first area, and at least part of the second area is located in a light transmission area of the touch panel. The orthographic projection of a first electrode chain located in the first area on the touch panel intersects with the orthographic projection of a second electrode chain located in the first area on the touch panel, and the orthographic projection of a first electrode chain located in the second area on the touch panel does not overlap with the orthographic projection of a second electrode chain located in the second area on the touch panel. The application cancels the conductive bridge in the second area of the touch panel, avoids the existence of dark spots in the light transmission area of the touch panel, and improves the light transmission performance of the touch panel and the display performance of the display panel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of touch control, in particular to a touch panel and a display panel. BACKGROUND

[0002] With the progress of technology and the increasing demand of consumers for large-screen mobile phones, mobile phone manufacturers have been committed to improving the screen-to-body ratio of mobile phones. Whether it is a notch screen, a water drop screen, a punch-hole screen, or a telescopic front camera solution, each has its own defects. Under-screen camera is considered a better solution for true full-screen.

[0003] The under-screen camera is usually arranged in the light transmission area of an organic light-emitting diode (OLED) display panel using On-Cell touch screen technology. On-Cell refers to a method of embedding a touch screen between the color filter substrate and the polarizer of a display screen, that is, arranging a touch sensor on the display screen.

[0004] However, the light transmission area of the above-mentioned OLED display panel has a dark spot, which affects the display effect of the OLED display panel. SUMMARY

[0005] In view of at least one of the above problems, the embodiments of the present application provide a touch panel and a display panel, which cancel the conductive bridge in the second area of the touch panel, and improve the light transmission performance of the touch panel and the display effect of the display panel.

[0006] To achieve the above-mentioned purpose, the embodiments of the present application provide the following technical solutions:

[0007] The first aspect of the embodiments of the present application provides a touch panel, which has a first area and a second area arranged adjacent to the first area; the touch panel includes a plurality of first electrode chains and a plurality of second electrode chains, and the first electrode chains and the second electrode chains are arranged in insulation with each other. The first electrode chain includes a plurality of first electrodes arranged along a first direction and electrically connected, and the second electrode chain includes a plurality of second electrodes arranged along a second direction and electrically connected, and the second direction intersects the first direction. Wherein, the orthogonal projection of the first electrode chain located in the first area on the touch panel intersects the orthogonal projection of the second electrode chain located in the first area on the touch panel, and the orthogonal projection of the first electrode chain located in the second area on the touch panel does not overlap with the orthogonal projection of the second electrode chain located in the second area on the touch panel.

[0008] The touch panel provided by the embodiments of the present application can be applied to a display panel with an under-screen functional device. The first area and the second area are arranged on the touch panel, the first area corresponds to the display area of the display panel, and the second area corresponds to the light-transmitting area of the display panel, and the light-transmitting area is used to arrange the under-screen functional device. By making the first electrode chain and the second electrode chain in the second area have no overlapping in the orthographic projection on the touch panel, the conductive bridge arranged on the first electrode pair or the second electrode pair is avoided, so that the dark spot in the light-transmitting area of the display panel is prevented, and the light-transmitting performance of the touch panel and the display performance of the display panel are improved.

[0009] In a possible implementation, the first electrode chain in the second area is interrupted by the second electrode on the at least one second electrode chain, and the two adjacent first electrodes that are interrupted are located on the two sides of the second electrode along the first direction.

[0010] Specifically, part of the first electrodes and part of the second electrodes in the second area are staggered in the second direction.

[0011] In this way, on the one hand, the setting difficulty of the first electrodes and the second electrodes in the second area can be reduced, and on the other hand, the sensitivity of the touch signal in the second area can be ensured.

[0012] In a possible implementation, the first electrode in the second area includes a first main body part and a plurality of first extension parts, one end of the first extension part is connected with the first main body part, and the other end extends away from the first main body part; the second electrode in the second area includes a second main body part and a plurality of second extension parts, one end of the second extension part is connected with the second main body part, and the other end extends away from the second main body part; and the first extension part and the second extension part are arranged in intervals between the adjacent first main body part and the second main body part.

[0013] In this way, the first electrodes and the second electrodes in the second area are arranged more regularly, and the setting difficulty of the first electrodes and the second electrodes is reduced.

[0014] In a possible implementation, the first main body part extends along the second direction, the plurality of first extension parts extend along the first direction and are arranged in intervals along the second direction; the second main body part extends along the second direction, the plurality of second extension parts extend along the first direction and are arranged in intervals along the second direction; the first extension part extends into between the two adjacent second extension parts, and the second extension part extends into between the two adjacent first extension parts.

[0015] Specifically, the first extension part and the second extension part are both in the shape of a strip.

[0016] In this way, the touch detection accuracy of the touch panel can be ensured to the maximum.

[0017] In a possible implementation, the first electrode and the second electrode are located in the same layer, and the touch panel further comprises an insulating layer located on surfaces of the first electrode and the second electrode.

[0018] Specifically, the first electrode and the second electrode have the same thickness.

[0019] In this way, the electrical interference between the first electrode, the second electrode and other conductive layers can be avoided.

[0020] In a possible implementation, the touch panel further comprises a third area adjacent to the first area, and a plurality of first electrodes located on the same first electrode chain at the partition are electrically connected through a connecting line, and the connecting line is located in the third area or the first area.

[0021] Specifically, the connecting line is located in the third area, and the connecting line is arranged in the same layer as the first electrode, and the first electrode located in the second area has a third extension part, the third extension part extends to the third area, and the third extension part is electrically connected with the connecting line.

[0022] In this way, on the one hand, the arrangement of the first electrode and the second electrode can be avoided from being affected by the connecting line; and on the other hand, the light transmission performance of the display panel can be avoided from being affected by the connecting line to the maximum extent.

[0023] In this way, the bridge line can be arranged at a position located outside the second area and located in the first area, and used to connect the first electrode.

[0024] Alternatively, the connecting line is located in the first area, the connecting line is arranged in a different layer from the first electrode, and the insulating layer is located between the connecting line and the first electrode; the first electrode located in the second area has a third extension part, the third extension part extends to the first area along the second direction, the insulating layer is provided with a first via hole, and the third extension part is electrically connected with the connecting line through the first via hole.

[0025] In this way, the connecting line and the first electrode can be located in different layers, the arrangement mode of the connecting line can be enriched, and the difficulty of the arrangement of the touch panel can be reduced.

[0026] In a possible implementation, the first electrode chain is partitioned into at least two parts, and the partitioned at least two parts of the first electrode chain are respectively connected with at least two wires.

[0027] In this way, the at least two parts of the same first electrode chain that are partitioned can be respectively led out through the at least two connecting lines. In this way, the at least two parts of the same first electrode chain that are partitioned can be respectively led out through the at least two connecting lines.

[0028] In a possible implementation, the first electrode chains are arranged at intervals along the second direction, the second electrode chains are arranged at intervals along the first direction, and the second direction is perpendicular to the first direction.

[0029] The touch control panel further includes conductive bridges, the second electrodes outside the second area are connected through the conductive bridges, and the first electrodes outside the second area are connected to each other.

[0030] The third area is provided with a plurality of first wires electrically connected to the first electrode chains and a plurality of second wires electrically connected to the corresponding second electrode chains.

[0031] Specifically, the first wires, the second wires, the conductive bridges, and the connection lines are arranged in the same layer.

[0032] Specifically, the first electrodes are receiving electrodes, and the second electrodes are transmitting electrodes.

[0033] In this way, the difficulty of setting the touch control panel and the thickness of the touch control panel can be reduced to the greatest extent.

[0034] In a possible implementation, the first electrodes and the second electrodes are located in different layers, and the first electrodes and the second electrodes are each composed of a transparent conductive material.

[0035] A second aspect of the embodiment of the application provides a display panel, which includes a light-emitting layer and the above-described touch control panel. The touch control panel is located on the light-out side of the light-emitting layer.

[0036] The display panel has a display area and a non-display area, the non-display area is arranged adjacent to the display area, the display area has a light-transmitting area, and a normal projection of the second area on the light-emitting layer at least partially overlaps a normal projection of the light-transmitting area on the light-emitting layer.

[0037] The display panel provided by the embodiment of the application sets a first area and a second area on the touch control panel, the first area corresponds to a display area of the display panel, the second area corresponds to a light-transmitting area of the display panel, and the light-transmitting area is used to set a functional device under the screen. The second electrodes in the second area are connected to each other, the first electrodes are electrically connected through the connection lines, and the connection lines are located outside the second area. In this way, the conductive bridges are avoided to be set on the first electrode pair or the second electrode pair, so that the dark spots in the light-transmitting area of the display panel are prevented, and the light-transmitting performance of the touch control panel and the display performance of the display panel are improved.

[0038] The configuration of the application and other application purposes and beneficial effects thereof will be more obvious and easy to understand through the description of the preferred embodiments in combination with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced as follows. Obviously, the accompanying drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those of ordinary skill in the art without creative effort based on these drawings.

[0040] Figure 1 A structural schematic diagram of a touch panel provided by an embodiment of the present application is shown in the figure.

[0041] Figure 2 A partial structural schematic diagram of a first connection mode of a first electrode in a touch panel provided by an embodiment of the present application is shown in the figure.

[0042] Figure 3 A partial structural schematic diagram of a second connection mode of a first electrode in a touch panel provided by an embodiment of the present application is shown in the figure.

[0043] Figure 4 A partial structural schematic diagram of a third connection mode of a first electrode in a touch panel provided by an embodiment of the present application is shown in the figure.

[0044] Figure 5 A partial sectional view of a touch panel provided by an embodiment of the present application is shown in the figure.

[0045] Figure 6 A structural schematic diagram of a touch electrode unit in a first area in a touch panel provided by an embodiment of the present application is shown in the figure.

[0046] Figure 7 A structural schematic diagram of a touch electrode unit in a second area in a touch panel provided by an embodiment of the present application is shown in the figure.

[0047] Figure 8 Another structural schematic diagram of a touch electrode unit in a second area in a touch panel provided by an embodiment of the present application is shown in the figure.

[0048] Explanation of reference signs:

[0049] 100 - touch panel

[0050] 101 - first area

[0051] 102 - second area

[0052] 103 - third area

[0053] 103a - first sub-area

[0054] 103b - second sub-area

[0055] 103c - third sub-area

[0056] 103d - fourth sub-region;

[0057] 110 - substrate;

[0058] 120 - first electrode chain;

[0059] 121 - first electrode pair;

[0060] 1211 - first electrode;

[0061] 1211a - first body part;

[0062] 1211b - first extension part;

[0063] 1211c - third extension part;

[0064] 130 - second electrode chain;

[0065] 131 - second electrode pair;

[0066] 1311 - second electrode;

[0067] 1311a - second body part;

[0068] 1311b - second extension part;

[0069] 140 - touch electrode unit;

[0070] 150 - connection line;

[0071] 160 - insulating layer;

[0072] 161 - first via hole;

[0073] 162 - second via hole;

[0074] 170 - conductive bridge;

[0075] 181 - first trace;

[0076] 182 - second trace. DETAILED DESCRIPTION

[0077] In the related art, the light transmission area of the OLED display panel is provided with an under-screen camera. In order to improve the light transmittance of the light transmission area, the anode with a larger area in the light transmission area is usually replaced by an anode with a very small area. However, the indium tin oxide (ITO) electrode on the touch screen is connected through a metal bridge. Since the light transmittance of the light transmission area is higher, the metal bridge is visible in appearance. In addition, when the display panel emits light, a small dark spot will appear in the light transmission area, which affects the display performance of the OLED display panel.

[0078] In order to solve the above technical problems, the embodiment of the present application provides a touch panel and a display panel. The first area and the second area are arranged on the touch panel. The first area corresponds to the display area of the display panel, and the second area corresponds to the light transmission area of the display panel. The light transmission area is used to arrange a function device under the screen. The first electrode chain in the second area is arranged on the touch panel without overlapping with the second electrode chain in the second area. In this way, the conductive bridge is avoided to be arranged on the first electrode chain or the second electrode chain in the second area, so that the dark spot is prevented from appearing in the light transmission area of the display panel, and the light transmission performance of the touch panel and the display performance of the display panel are improved.

[0079] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the preferred embodiments of the present application. In the drawings, the same or similar notations represent the same or similar components or components with the same or similar functions throughout. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. The embodiments of the present application will be described in detail below with reference to the drawings.

[0080] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood in a broad sense, for example, it can be fixedly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0081] Figure 1 The structure schematic diagram of the touch panel provided by the embodiment of the present application is provided. Figure 2 The local structure schematic diagram of the first connection mode of the first electrode in the touch panel provided by the embodiment of the present application is provided. Figure 3 The local structure schematic diagram of the second connection mode of the first electrode in the touch panel provided by the embodiment of the present application is provided. Figure 4 The local structure schematic diagram of the third connection mode of the first electrode in the touch panel provided by the embodiment of the present application is provided. Figure 5 The local sectional view of the touch panel provided by the embodiment of the present application is provided. Figure 6 The structure schematic diagram of the touch electrode unit in the first area of the touch panel provided by the embodiment of the present application is provided. Figure 7 The structure schematic diagram of the touch electrode unit in the second area of the touch panel provided by the embodiment of the present application is provided.Figure 8 Another structural diagram of a touch electrode unit in the second area of the touch panel provided in the embodiments of the present application is shown. Referring to Figures 1-8 The first aspect of the embodiments of the present application provides a touch panel.

[0082] The touch panel 100 is applied to a display panel with an under-screen function. The under-screen function can be under-screen fingerprint recognition or under-screen camera, and the embodiments of the present application take the under-screen camera function as an example for illustration. As shown in Figure 1 The touch panel 100 includes a first area 101, a second area 102, and a third area 103. The first area 101 is adjacent to the third area 103, and the second area 102 is located in the first area 101. In the embodiments, the third area 103 surrounds the periphery of the first area 101. The first area 101 corresponds to the display area of the display panel, the second area 102 corresponds to the light-transmitting area of the display panel, the light-transmitting area is used to set the under-screen camera, and the third area 103 corresponds to the non-display area of the display panel. In other embodiments of the present application, the second area 102 in the touch panel 100 is arranged on one side of the first area 101, and is not arranged in the first area 101.

[0083] The touch panel 100 can include a substrate 110, which can be a glass substrate, a ceramic substrate, or other flexible substrates. The glass substrate has the advantages of low cost, mature manufacturing technology, and hard and fast heat conduction.

[0084] Specifically, the substrate 110 in the first area 101 is provided with m first electrode chains 120 and n second electrode chains 130, and the first electrode chains 120 and the second electrode chains 130 are insulated from each other. The m first electrode chains 120 are arranged at intervals along a second direction b, and the n second electrode chains 130 are arranged at intervals along a first direction a. The second direction b and the first direction a intersect. In the embodiments of the present application, the second direction b and the first direction a are perpendicular, and m and n are both positive integers greater than 1. It can be understood that m and n can be equal or not equal, and the size of m and n is not limited in the embodiments of the present application.

[0085] Referring to Figure 1 , Figure 6 and Figure 7As shown, the first electrode chain 120 includes a plurality of first electrodes 1211 arranged along the first direction a and electrically connected, and the second electrode chain 130 includes a plurality of second electrodes 1311 arranged along the second direction b and electrically connected. Specifically, the first electrode chain 120 includes n first electrode pairs 121 arranged along the first direction a in sequence and electrically connected with each other, and each first electrode pair 121 includes two first electrodes 1211 oppositely arranged. The second electrode chain 130 includes m second electrode pairs 131 arranged along the second direction b in sequence and electrically connected with each other, and each second electrode pair 131 includes two second electrodes 1311 oppositely arranged. Each first electrode pair 121 and each second electrode pair 131 correspond to each other to form a touch electrode unit 140, and a coupling capacitance can be formed between adjacent first electrodes 1211 and second electrodes 1311 in the touch electrode unit 140.

[0086] The orthographic projection of the first electrode chain 120 located in the first area 101 on the touch panel 100 intersects with the orthographic projection of the second electrode chain 130 located in the first area 101 on the touch panel 100, and the orthographic projection of the first electrode chain 120 located in the second area 102 on the touch panel 100 does not overlap with the orthographic projection of the second electrode chain 130 located in the second area 102 on the touch panel 100.

[0087] In the embodiment, the first electrode chain 120 and the second electrode chain 130 located in the second area 102 are arranged in the same layer, and the first electrode chain 120 located in the second area 102 is interrupted by the second electrode 1311 on at least one second electrode chain 130. In other embodiments of the present application, the first electrode chain 120 and the second electrode chain 130 can be arranged in different layers, and then the first electrode chain 120 located in the second area 102 is arranged in a multi-segment structure. The first electrode chain 120 and the second electrode chain 130 located in the first area do not need to be arranged in different layers and can not need to be arranged with a metal conductive bridge, thereby helping to improve the light transmission performance of the touch panel. Optionally, the first electrode 1211 and the second electrode 1311 arranged in different layers are both composed of a transparent conductive material.

[0088] As an implementation manner, the plurality of first electrodes 1211 on the same first electrode chain 120 located at the interruption position are electrically connected through a connecting line 150, and the connecting line 150 is located outside the second area 102.

[0089] Specifically, referring to Figure 2 and Figure 7 As shown, the two second electrodes 1311 in each second electrode pair 131 located in the second area 102 are connected with each other, and the two first electrodes 1211 in each first electrode pair 121 located in the second area 102 are electrically connected through a connecting line 150, and the connecting line 150 is located outside the second area 102.

[0090] It should be noted that by connecting the second electrodes 1311 in the second area 102 to each other, the first electrodes 1211 are electrically connected by the connecting lines 150, and the connecting lines 150 are located outside the second area 102. In this way, the conductive bridges 170 are avoided on the first electrode pair 121 or the second electrode pair 131, the light transmission performance of the touch panel 100 is further improved, the dark spots in the light transmission area of the display panel are prevented, and the display performance of the display panel is improved.

[0091] As another implementation manner, since the first electrode chain 120 is divided into at least two parts, the divided at least two parts of the first electrode chain 120 are respectively connected with the at least two wires 181. In some embodiments of the present application, the first electrode chain 120 is divided into left, middle and right three parts, and the three parts of the divided first electrode chain 120 are respectively led out by three wires (not shown in the figure), for example, the first electrode 1211 on the left part of the first electrode chain 120 is connected with one wire 181, the first electrode 1211 on the middle part of the first electrode chain 120 is connected with another wire 181, and the first electrode 1211 on the right part of the first electrode chain 120 is connected with another wire 181. Different from the above electrical connection manner, the structure leads out the divided first electrode chain 120 by the plurality of wires 181, such as directly connected with the chip, to realize the signal transmission of the divided first electrode chain 120.

[0092] In the embodiments of the present application, the first electrode 1211 is a receiving electrode, and the second electrode 1311 is a transmitting electrode. The first electrode 1211 and the second electrode 1311 are located on the same side of the substrate 110 and are in the same layer, that is, the first electrode 1211 and the second electrode 1311 are located on the same horizontal plane. The material of the first electrode 1211 and the second electrode 1311 can be ITO, so as to improve the light transmittance of the touch panel 100. The functions of the first electrode 1211 and the second electrode 1311 are not limited in the embodiments of the present application. For example, the first electrode 1211 can also be a transmitting electrode, and the second electrode 1311 can also be a receiving electrode.

[0093] In a possible implementation manner, as shown in Figure 2 The second electrode 1311 located in the second area 102 extends along the second direction b, and the adjacent first electrode 1211 located in the second area 102 is located on the two sides of the second electrode 1311 along the first direction a. The part of the first electrode 1211 and the part of the second electrode 1311 located in the second area 102 are staggered in the second direction b. In this way, the connecting line 150 can be arranged outside the second area 102, and the adjacent second electrodes 1311 can be connected by the connecting line 150, which reduces the difficulty of arranging the first electrode 1211, the second electrode 1311 and the connecting line 150. On the other hand, this arrangement can ensure the sensitivity of the touch signal in the second area 102.

[0094] In a possible implementation, as shown in Figure 7 The first electrode 1211 in the second area 102 includes a first main body 1211a and a plurality of first extension parts 1211b connected to each other, one end of each of the first extension parts 1211b is connected to the first main body 1211a, and the other end extends away from the first main body 1211a, for example, the first main body 1211a extends along the second direction b, and the plurality of first extension parts 1211b extend along the first direction a and are arranged at intervals along the second direction b. The second electrode 1311 in the second area 102 includes a second main body 1311a and a plurality of second extension parts 1311b connected to each other, one end of each of the second extension parts 1311b is connected to the second main body 1311a, and the other end extends away from the second main body 1311a, for example, the second main body 1311a extends along the second direction b, and the plurality of second extension parts 1311b extend along the first direction a and are arranged at intervals along the second direction b. The first extension part 1211b extends into between two adjacent second extension parts 1311b, and the second extension part 1311b extends into between two adjacent first extension parts 1211b. In this way, the first electrode 1211 and the second electrode 1311 in the second area 102 are arranged more regularly, and the difficulty of arranging the first electrode 1211 and the second electrode 1311 is reduced.

[0095] In a possible implementation, the first extension part 1211b and the second extension part 1311b are in a strip shape. Specifically, as shown in Figure 7 The first electrode 1211 and the second electrode 1311 in the second area 102 are in a comb shape, and the first extension part 1211b and the second extension part 1311b are in a rectangular shape. As shown in Figure 8 The first extension part 1211b and the second extension part 1311b are in a zigzag shape. It should be noted that the first extension part 1211b and the second extension part 1311b can also be in a wave shape or the like. In addition, the first electrode 1211 and the second electrode 1311 outside the second area 102 can be in a triangular shape, adjacent first electrodes 1211 are connected to form a rhombus shape, and adjacent second electrodes 1311 are connected to form a rhombus shape.

[0096] It should be noted that the first electrode 1211 and the second electrode 1311 in each touch electrode unit 140 are arranged in a nested manner, which can increase the coupling area of the adjacent junctions of the first electrode 1211 and the second electrode 1311, improve the change amount of the capacitive signal when a finger touches, and effectively improve the touch sensitivity.

[0097] Specifically, the touch panel 100 further comprises an insulating layer 160, which can be located on the side of the first electrodes 1211 and the second electrodes 1311 close to the substrate 110, and can also be located on the side of the first electrodes 1211 and the second electrodes 1311 away from the substrate 110. In the embodiment of the present application, the insulating layer 160 is located on the side of the first electrodes 1211 and the second electrodes 1311 close to the substrate 110. Since the touch panel 100 can further comprise a trace, the insulating layer 160 can avoid the electrical interference between the first electrodes 1211 and the second electrodes 1311 and the trace. The material of the insulating layer 160 includes but is not limited to insulating glue and silicon dioxide, etc.

[0098] It should be noted that, as shown in FIGS. 1A and 1B, the touch panel 100 further comprises a conductive bridge 170, which is located on the side of the insulating layer 160 away from the second electrodes 1311, and the two second electrodes 1311 in each second electrode pair 131 located outside the second area 102 are electrically connected through the conductive bridge 170. The two first electrodes 1211 in each first electrode pair 121 located outside the second area 102 are directly connected. Figure 1 Figure 6 It should be noted that, as shown in FIGS. 1A and 1B, the touch panel 100 further comprises a conductive bridge 170, which is located on the side of the insulating layer 160 away from the second electrodes 1311, and the two second electrodes 1311 in each second electrode pair 131 located outside the second area 102 are electrically connected through the conductive bridge 170. The two first electrodes 1211 in each first electrode pair 121 located outside the second area 102 are directly connected.

[0099] It can be understood that, in the first area 101, the transmitting electrodes are electrically connected through another layer of conductive bridges 170, and the receiving electrodes are directly electrically connected. This is because the signal uniformity through another layer of conductive bridges 170 is worse than that of the same layer of electrical connection, and in the working process of the touch panel 100, the loop of the transmitting electrode is usually in a power-on state, and the signal loop is relatively stable, while the receiving electrode only generates a sensing signal when touch occurs. The same layer of electrical connection with better uniformity can improve the detection sensitivity of the touch panel 100.

[0100] Specifically, the third area 103 comprises a first sub-area 103a, a second sub-area 103b, a third sub-area 103c and a fourth sub-area 103d connected to each other, the first sub-area 103a and the third sub-area 103c are located on opposite sides of the first area 101 in the second direction b, and the second sub-area 103b and the fourth sub-area 103d are located on opposite sides of the first area 101 in the first direction a.

[0101] ​The fourth sub-region 103d contains m first traces 181, each corresponding to one of the m first electrode chains 120. Each first trace 181 is electrically connected to its corresponding first electrode chain 120. It is understood that the receiving electrode only needs to have one trace for detection at one end of each first electrode chain 120; no trace is required at the other end of each first electrode chain 120. Alternatively, the first traces 181 can be located in the second sub-region 103b; the location of the first traces 181 is not limited in this embodiment.

[0102] Specifically, n second traces 182 are provided in both the first sub-region 103a and the third sub-region 103c, and each of the n second traces 182 corresponds one-to-one with a n second electrode chain 130. The second electrode chain 130 includes a first end and a second end positioned opposite each other. The second traces 182 in the first sub-region 103a are electrically connected to the first end of the corresponding second electrode chain 130, and the second traces 182 in the third sub-region 103c are electrically connected to the second end of the corresponding second electrode chain 130. This structure connects the two ends of the second electrode chain 130 to the second traces 182 respectively, improving the electrical signal transmission of the second electrode chain 130 and increasing touch sensitivity. It can be applied to large-size touch panels or gaming phones.

[0103] It is understood that the other ends of the second traces 182 within the first sub-region 103a and the third sub-region 103c are electrically connected to the touch driver chip in the display panel, thereby forming a loop that provides an excitation signal for each second electrode chain 130. Furthermore, the other end of the first trace 181 is also electrically connected to the touch driver chip in the display panel to provide touch signals.

[0104] like Figure 5 As shown, in the embodiments of this application, the first trace (in) Figure 5 (not shown in the image), second trace 182, conductive bridge (in...) Figure 5 (Not shown in the image) are all located on the same layer, between the insulating layer 160 and the substrate 110. The first trace, the second trace 182 and the conductive bridge can be made of the same material. Taking the first trace as an example, the material of the first trace includes, but is not limited to, one or more of titanium, aluminum, silver, molybdenum or copper.

[0105] In the embodiments of the present application, two different implementations are provided for the setting position of the connection line 150, in which the connection line 150 can be located in the first area 101 or the third area 103. When the connection line 150 is located in the third area 103, on the one hand, the setting of the first electrode 1211 and the second electrode 1311 can be avoided to be affected by the connection line 150; on the other hand, the light transmission performance of the display panel can be maximally avoided to be affected by the connection line 150. When the connection line 150 is located in the first area 101, the connection line 150 can be made closer to the first electrode 1211, the extension length of the first electrode 1211 can be reduced, the resistance of the adjacent first electrodes 1211 after being connected can be reduced, and the accuracy and sensitivity of the touch control electrode unit 140 in detecting the touch signal can be improved.

[0106] In the first possible implementation, as shown in Figure 2 and Figure 3 , the connection line 150 is located in the third area 103, and the first electrode 1211 located in the second area 102 extends along the second direction b towards the third area 103 and forms a third extension part 1211c, and the third extension part 1211c is electrically connected with the connection line 150.

[0107] In the first possible implementation, as shown in Figure 2 , the connection line 150 and the first electrode 1211 are located in different layers, and as shown in Figure 5 , the connection line 150 can be located on the side of the insulating layer 160 away from the first electrode 1211, and the insulating layer 160 is provided with a first via hole 161, and the third extension part 1211c and the connection line 150 are electrically connected through the first via hole 161. In addition, the insulating layer 160 can be provided with a second via hole 162, and the second wire 182 and the second electrode chain 130 are electrically connected through the second via hole 162; the insulating layer 160 can also be provided with a third via hole, and the first wire 181 and the first electrode chain 120 can be electrically connected through the third via hole, in which Figure 2 only the second via hole 162 is shown.

[0108] It can be understood that in this setting mode, the connection line 150, the first wire 181, the second wire 182 and the conductive bridge 170 can be located in the same layer, and the material of the connection line 150 can be the same as that of the first wire 181, the second wire 182 and the conductive bridge 170.

[0109] In another implementation of the first setting mode, as shown in Figure 3As shown, the connecting line 150 is disposed in the same layer as the first electrode 1211 and the second electrode 1311. Since the second electrode 1311 in the second electrode chain 130, which is closer to the third region 103, extends into the third region 103 for electrical connection with the second trace 182, the connecting line 150 is offset to the outside of the third region 103 and is located on the side of the second trace 182 away from the second electrode 1311. This avoids interference between the connecting line 150 and the second electrode 1311. In this arrangement, the material of the connecting line 150 can be the same as that of the first electrode 1211 and the second electrode 1311, and the first electrode 1211, the second electrode 1311, and the connecting line 150 can be formed simultaneously during the fabrication of the touch panel 100, reducing the difficulty of fabricating the touch panel 100.

[0110] It is understandable that connecting the first electrode 1211 (receiving electrode) in the same layer can improve the uniformity of the touch signal received by the first electrode 1211 and increase the detection sensitivity of the touch panel 100.

[0111] In the second possible implementation, such as Figure 4 As shown, the connecting line 150 can be located within the first region 101. To avoid interference between the connecting line 150 and the second electrode 1311, the connecting line 150 can be disposed in a different layer from the first electrode 1211 and the second electrode 1311. Specifically, the connecting line 150 is located on the side of the insulating layer 160 away from the first electrode 1211 and the second electrode 1311, that is, the connecting line 150 is located on the same layer as the first trace 181, the second trace 182 and the conductive bridge 170. The material of the connecting line 150 can be the same as that of the first trace 181, the second trace 182 and the conductive bridge 170.

[0112] In this embodiment, the first electrode 1211 located in the second region 102 extends towards the first region 101 along the second direction b and forms a third extension 1211c. A first via 161 is provided on the insulating layer 160, and the third extension 1211c is electrically connected to the connecting line 150 through the first via 161. In this configuration, the connecting line 150 is equivalent to a "bridging wire," which is located outside the second region 102 and inside the first region 101. This application does not limit the location of the connecting line 150, and mainly uses the configuration where the connecting line 150 is located in the third region 103 as an example for explanation.

[0113] It should be noted that in the first arrangement, the second area 102 can only be located at the edge of the first area 101, that is, the junction of the first area 101 and the third area 103, and only one first electrode chain 120 is arranged in the second area 102. In the second arrangement, the second area 102 can be located at the center of the first area 101, and two first electrode chains 120 can be arranged in the second area 102. When the second area 102 has two first electrode chains 120, the connecting line 150 is two, and is respectively located at the opposite sides of the second area 102 along the second direction b.

[0114] Specifically, the thicknesses of the first electrode 1211 and the second electrode 1311 are the same, and the thickness of the first electrode 1211 is between 30-40nm, wherein the thickness of the first electrode 1211 can be 30nm, 35nm or 40nm. The thickness of the first electrode 1211 is within the above range, which can ensure the accuracy of touch detection of the touch panel 100 on the one hand, and can minimize the thickness of the touch panel 100 on the other hand.

[0115] The second aspect of the embodiment of the application provides a display panel, which comprises the display panel described above. The display panel has an under-screen camera function, and can be an Organic Light-Emitting Diode (OLED) display panel, a Liquid Crystal Display (LCD), a Mini Light-Emitting Diode (Mini LED) display panel or a Micro Light-Emitting Diode (Micro LED) display panel. The display panel can be used to prepare an electronic device, which can be a mobile phone, a television, a tablet computer, a notebook computer, an ultra-mobile personal computer (UMPC), a personal digital assistant (PDA), a virtual reality device, etc.

[0116] The display panel comprises a substrate, a light-emitting layer and the touch panel 100 described above. The light-emitting layer and the touch panel 100 are sequentially stacked on the substrate. The display panel has a display area and a non-display area, and the non-display area is arranged around the display area. The display area has a light-transmitting area for arranging an under-screen camera. The orthographic projection of the first area 101 on the light-emitting layer at least partially overlaps the display area, the orthographic projection of the third area 103 on the light-emitting layer at least partially overlaps the non-display area, and the orthographic projection of the second area 102 on the light-emitting layer at least partially overlaps the light-transmitting area.

[0117] The display panel provided by the embodiment of the present application is provided with a first area 101, a second area 102 and a third area 103 on the touch panel 100, wherein the first area 101 corresponds to the display area of the display panel, the second area 102 corresponds to the light-transmitting area of the display panel, the light-transmitting area is used for arranging an under-screen camera, and the third area 103 corresponds to the non-display area of the display panel. The first electrode chain 120 located in the second area 102 is made to have no overlap with the normal projection of the second electrode chain 130 located in the second area 102 on the touch panel 100. In this way, the conductive bridge 170 is avoided from being arranged on the first electrode chain 120 or the second electrode chain 130 in the second area 102, so that the dark spot in the light-transmitting area of the display panel is prevented, and the light-transmitting performance of the touch panel 100 and the display performance of the display panel are improved.

[0118] In the description of the embodiments of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0119] The terms "first", "second", "third", "fourth" and the like (if any) in the description of the present application and claims and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to the process, method, product or device.

[0120] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent substitutions for part or all of the technical features; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A touch panel, characterized by, The touch panel comprises a first area and a second area adjacent to the first area; The touch panel comprises a plurality of first electrode chains and a plurality of second electrode chains, the first electrode chains and the second electrode chains are arranged in insulation with each other; the first electrode chains comprise a plurality of first electrodes arranged in a first direction and electrically connected; the second electrode chains comprise a plurality of second electrodes arranged in a second direction and electrically connected, the second direction intersects the first direction; The first electrodes located in the second area comprise a first main body and a plurality of first extension parts, one end of the first extension part is connected with the first main body, and the other end extends away from the first main body; The second electrodes located in the second area comprise a second main body and a plurality of second extension parts, one end of the second extension part is connected with the second main body, and the other end extends away from the second main body; the first extension parts and the second extension parts are arranged in intervals between adjacent first main bodies and second main bodies; the first extension parts and the second extension parts are in strip shape; The first electrode chains located in the first area are projected on the touch panel, and the projection intersects the projection of the second electrode chains located in the first area on the touch panel; the first electrode chains located in the second area are projected on the touch panel, and the projection does not overlap the projection of the second electrode chains located in the second area on the touch panel; The first electrode chains located in the second area are completely separated by the second electrodes on two second electrode chains, and form a first part, a second part and a third part arranged in the first direction and separated in sequence, and the first part, the second part and the third part are led out through three wires respectively; the second electrodes on the two second electrode chains are not completely separated by the first electrode chains located in the second area; the second electrodes on one second electrode chain are located between the first part and the second part, and the second electrodes on the other second electrode chain are located between the second part and the third part; the separated first electrodes comprise a first separated part located in the second area and a first non-separated part located in the first area, the first separated part and the first non-separated part are different in shape; the second electrodes separating the first electrodes comprise a second separated part located in the second area and a second non-separated part located in the first area, the second separated part and the second non-separated part are different in shape; the touch panel further comprises a third area adjacent to the first area, a plurality of first electrodes on the same first electrode chain at the separation are electrically connected through a connecting line; The connecting line is located in the third area, the connecting line is arranged in the same layer as the first electrodes, the first electrodes located in the second area have a third extension part, the third extension part extends to the third area, and the third extension part is electrically connected with the connecting line; Alternatively, the connection line is located in the first area, the connection line is different from the first electrode, the touch panel further comprises an insulating layer, and the insulating layer is located between the connection line and the first electrode; the first electrode located in the second area has a third extension part, and the third extension part extends to the first area along the second direction; the insulating layer is provided with a first via hole, and the third extension part is electrically connected with the connection line through the first via hole.

2. The touch panel according to claim 1, wherein Part of the first electrode and part of the second electrode located in the second area are staggered in the second direction.

3. The touch panel according to claim 2, wherein The first main body part extends along the second direction, and a plurality of the first extension parts extend along the first direction and are arranged at intervals along the second direction. The second main body part extends along the second direction, and a plurality of the second extension parts extend along the first direction and are arranged at intervals along the second direction. The first extension part extends into between two adjacent second extension parts, and the second extension part extends into between two adjacent first extension parts.

4. The touch panel according to any one of claims 1-3, wherein, The first electrode and the second electrode are located in the same layer, and the touch panel further comprises an insulating layer, and the insulating layer is located on the surface of the first electrode and the second electrode.

5. The touch panel according to claim 4, wherein The thickness of the first electrode and the second electrode is the same.

6. The touch panel according to claim 4, wherein A plurality of the first electrode chains are arranged at intervals along the second direction, and a plurality of the second electrode chains are arranged at intervals along the first direction, and the second direction and the first direction are perpendicular. The touch panel further comprises a conductive bridge, and the second electrode located outside the second area is connected through the conductive bridge; and the first electrode located outside the second area is connected with each other. The third area is provided with a plurality of first wires electrically connected with one of the first electrode chains and a plurality of second wires electrically connected with the corresponding second electrode chains.

7. The touch panel according to claim 6, wherein The first wire, the second wire, the conductive bridge and the connection line are located in the same layer.

8. The touch panel according to claim 6, wherein The first electrode is a receiving electrode, and the second electrode is a transmitting electrode.

9. The touch panel according to claim 1, wherein The first electrode and the second electrode are located in different layers, and the first electrode and the second electrode are both composed of transparent conductive material.

10. A display panel, characterized by, The display panel comprises a display panel, a light emitting layer and a touch panel, the touch panel is located on the light emitting layer, and the touch panel is any one of claims 1-9. The display panel has a display area and a non-display area, the non-display area is located adjacent to the display area, the display area has a light transmission area; the orthographic projection of the second area on the light emitting layer at least partially overlaps with the orthographic projection of the light transmission area on the light emitting layer.

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