Display panel and display device

Abstract

The application discloses a display panel and a display device, and relates to the technical field of display, which comprises a display area and a non-display area, the non-display area comprises a fan-out area, a barrier area and a binding area arranged along a first direction; wherein the barrier area is located on a side of the fan-out area away from the display area, and the binding area is located on a side of the barrier area away from the fan-out area; the display panel comprises a first touch electrode and a first touch signal line electrically connected with the first touch electrode, wherein the first touch electrode is located in the display area, and the first touch signal line is located at least in the non-display area; the same first touch signal line comprises at least a first line segment located in the fan-out area and a second line segment located in the barrier area, the first line segment and the second line segment are electrically connected, and the first line segment and the second line segment are arranged in different layers. The application arranges the part of the same first touch signal line located in the fan-out area and the part located in the barrier area in different layers, so that the space occupied by the first touch signal line in the fan-out area can be reduced, and further narrow-frame design can be realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, more particularly, to a display panel and a display device. BACKGROUND

[0002] From the CRT (Cathode Ray Tube) era to the liquid crystal era, and now to the OLED (Organic Light-Emitting Diode) era, the display industry has undergone decades of development and has become increasingly sophisticated. The display industry has become closely related to our lives, from traditional mobile phones, tablets, televisions and PCs, to current smart wearable devices and VR electronic devices, all of which cannot do without display technology.

[0003] With the continuous development of electronic display technology, users have increasingly high requirements for electronic devices. In recent years, display devices with narrow frames have been developed. For display devices with touch control function, touch control lines for transmitting touch control signals are added in the display device, which need to be led to the lower frame area of the display device together with other signal lines in the display device, and then electrically connected with the control chip in the lower frame area. When the number of lines in the lower frame of the display device increases, more space is needed to place these lines, which is not conducive to further narrowing the lower frame. SUMMARY

[0004] Therefore, the present application provides a display panel and a display device, which set the part of the same first touch control signal line located in the fan-out area and the part located in the barrier wall area in different film layers, thereby reducing the number of lines set on the same film layer, which is conducive to further reducing the width of the lower frame.

[0005] In a first aspect, the present application provides a display panel, comprising a display area and a non-display area, the non-display area comprising a fan-out area, a barrier wall area and a binding area arranged along a first direction; wherein the barrier wall area is located on the side of the fan-out area away from the display area, and the binding area is located on the side of the barrier wall area away from the fan-out area.

[0006] The display panel comprises a first touch control electrode and a first touch control signal line electrically connected with the first touch control electrode, wherein the first touch control electrode is located in the display area, and the first touch control signal line is located at least in the non-display area; the same first touch control signal line comprises at least a first line segment located in the fan-out area and a second line segment located in the barrier wall area, the first line segment and the second line segment are electrically connected, and the first line segment and the second line segment are arranged in different layers.

[0007] In a second aspect, the present application provides a display device comprising the display panel provided in the first aspect of the present application.

[0008] Compared with the prior art, the display panel and the display device provided by the present application at least achieve the following beneficial effects:

[0009] In the display panel and the display device provided by the present application, the non-display area comprises a fan-out area, a barrier area and a binding area arranged in sequence along the first direction, wherein the binding area is used for binding a control chip or a flexible circuit board. The area where the fan-out area, the barrier area and the binding area are located is the lower frame area of the display panel. The display panel in the present application has a touch function, and the first touch electrode is arranged in the display area. The first touch signal line electrically connected with the first touch electrode extends to the lower frame area and is finally electrically connected with the conductive pad of the binding area to realize the transmission of the touch signal. In particular, the part of the same first touch signal line located in the fan-out area and the part located in the barrier area are arranged in different film layers, so that the number of signal lines located on a single film layer is reduced. When the number of signal lines on a single film layer is reduced, the space size occupied by the signal line in the fan-out area will also be reduced, so that the width of the fan-out area is compressed, and the further compression of the lower frame of the display panel and the display device is realized, and the further narrowing of the lower frame of the display panel and the display device is realized.

[0010] Of course, any product implementing the present application does not necessarily need to achieve all the technical effects described above at the same time.

[0011] Other features of the present application and its advantages will become apparent from the following detailed description of exemplary embodiments thereof, with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0012] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present application and, together with the description, serve to explain the principles of the present application.

[0013] Figure 1 Fig. 1 shows a top view of the display panel provided by the embodiment of the present application;

[0014] Figure 2 Fig. 2 shows another top view of the display panel provided by the embodiment of the present application;

[0015] Figure 3 Fig. 3 shows a film layer schematic diagram of the line segment in the fan-out area and the line segment in the barrier area of the same first touch signal line;

[0016] Figure 4 Fig. 4 shows another top view of the display panel provided by the embodiment of the present application;

[0017] Figure 5 Fig. 5 shows another top view of the display panel provided by the embodiment of the present application;

[0018] Figure 6 Fig. 1 shows a structure diagram of different line segments in the same first touch signal line;

[0019] Figure 7 Fig. 2 shows a layout diagram of the first touch signal line in different regions of the display panel provided by the embodiment of the present application;

[0020] Figure 8 Fig. 3 shows another layout diagram of the first touch signal line in different regions of the display panel provided by the embodiment of the present application;

[0021] Figure 9 Fig. 4 shows another layout diagram of the first touch signal line in different regions of the display panel provided by the embodiment of the present application;

[0022] Figure 10 Fig. 5 shows an AA sectional view of the display panel; Figure 1 Fig. 6 shows a structure diagram of the display device provided by the embodiment of the present application.

[0023] Figure 11 Fig. 7 shows a structure diagram of the display device provided by the embodiment of the present application. DETAILED DESCRIPTION

[0024] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of the components and steps set forth in the embodiments, numerical expressions, and numerical values are not limiting to the scope of the present application unless otherwise specifically stated.

[0025] The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the scope of the application, its application, or uses.

[0026] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail herein. However, where appropriate, such techniques, methods, and apparatus should be considered as being part of the specification.

[0027] In all of the examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as a limitation on the scope of the exemplary embodiments. Thus, other examples of the exemplary embodiments can have different values.

[0028] It should be noted that like numbers and letters refer to like items throughout the drawings, and that, once an item is defined in one drawing, it should not require further discussion in subsequent drawings.

[0029] Figure 1 Fig. 5 shows an AA sectional view of the display panel; Fig. 6 shows a structure diagram of the display device provided by the embodiment of the present application.Figure 1 Not all the wirings on the display panel 100 are shown, only the sub-pixels P of the display area Q1 and the data lines D and the scan lines S are shown, and the rest of the wirings are not shown. It can be understood that, Figure 1 The scan lines S and the data lines D in the shown embodiment are all led to the fan-out area Q01 and the barrier wall area Q02, and finally to the binding area Q03, which optionally includes a plurality of conductive pads.

[0030] Figure 2 Another top view of the display panel provided by the embodiment of the present application is shown, which shows the arrangement of the first touch electrode T1 in the display panel 100 and the first touch signal line L1 electrically connected to the first touch electrode T1, and shows the scheme that the same first touch electrode T1 is electrically connected to one first touch signal line L1, and this part of the first touch signal line extends directly from the display area Q1 to the fan-out area Q01, and then reaches the binding area Q03 through the barrier wall area Q02. It can be understood that the number of conductive pads in the binding area Q03 is multiple, Figure 1 only part of the conductive pads electrically connected to the data lines are shown, Figure 2 only part of the conductive pads electrically connected to the first touch signal line are shown, but the conductive pads electrically connected to the data lines and the conductive pads electrically connected to the first touch signal line are different conductive pads.

[0031] Figure 3 A film layer schematic diagram of the line segment in the fan-out area Q01 and the line segment in the barrier wall area Q02 in the same first touch signal line L1 is shown. This embodiment only shows the relative position relationship of the line segment in the fan-out area Q01 and the line segment in the barrier wall area Q02 in the same first touch signal line L1, and does not represent the actual film layer structure of the fan-out area Q01 and the barrier wall area Q02 in the display panel.

[0032] Please refer to Figures 1 to 3 The embodiment of the present application provides a display panel 100, which comprises a display area Q1 and a non-display area Q0, and the non-display area Q0 comprises a fan-out area Q01, a barrier wall area Q02 and a binding area Q03 arranged along a first direction D1; wherein the barrier wall area Q02 is located on the side of the fan-out area Q01 away from the display area Q1, and the binding area Q03 is located on the side of the barrier wall area Q02 away from the fan-out area Q01; optionally, the first direction D1 in the embodiment of the present application is the direction from the display area Q1 to the fan-out area Q01.

[0033] The display panel 100 comprises a first touch electrode T1 and a first touch signal line L1 electrically connected with the first touch electrode T1, wherein the first touch electrode T1 is located in the display area Q1, and the first touch signal line L1 is at least located in the non-display area Q0; the same first touch signal line L1 comprises at least a first line segment L11 located in the fan-out area Q01 and a second line segment L12 located in the barrier wall area Q02, the first line segment L11 and the second line segment L12 are electrically connected, and the first line segment L11 and the second line segment L12 are arranged in different layers.

[0034] It should be noted that, Figure 1 and Figure 2 The display panel of the present application is only illustrated by taking the display panel 100 with a top view structure of a rectangle as an example, and the structure of the display panel in the present application is not limited, and in some other embodiments of the present application, the top view structure of the display panel can also be a rounded rectangle, a circle, a special-shaped structure containing an arc, and the like. Figure 1 In the figure, only the sub-pixel P on the display panel and the scan line S and the data line D electrically connected with the sub-pixel P are illustrated, and it does not represent the structure, number and size of the sub-pixel P, the scan line S and the data line D actually contained in the display panel. Figure 2 Only the first touch electrode T1 on the display panel and the first touch signal line L1 electrically connected with the first touch electrode T1 are illustrated, and it also does not represent the actual shape, number and size of the first touch electrode T1 and the first touch signal line L1. Figure 3 Only the film layer structure of different line segments in the same first touch signal line L1 is illustrated, and it also does not represent the actual film layer thickness and size.

[0035] Specifically, please refer to Figures 1 to 3 In the display panel provided by the embodiment of the present application, the non-display area Q0 comprises the fan-out area Q01, the barrier wall area Q02 and the binding area Q03 arranged in sequence along the first direction D1, wherein the binding area Q03 is used for binding a control chip or a flexible circuit board. The non-display area where the fan-out area Q01 and the binding area Q03 are located is the lower frame area of the display panel. Generally, in order to drive the display panel to emit light, a plurality of signal lines are arranged in the display panel, such as the scan line S, the data line D, and the like, for example, a power line, a clock signal line and the like not shown in the figure, and these signal lines are finally led to the binding area Q03 to form an electrical connection with the conductive pad of the binding area Q03, and when the control chip or the flexible circuit board is bound in the binding area Q03, the control chip or the flexible circuit board can realize the transmission of signals through the conductive pad and the signal lines in the display panel.

[0036] The display panel in the application has a touch function, a first touch electrode T1 is arranged in a display area Q1, a first touch signal line L1 electrically connected with the first touch electrode T1 extends to a lower frame area, and finally is electrically connected with a conductive pad of a binding area Q03 to realize transmission of a touch signal.

[0037] In the related art, when the display panel has a touch function, the touch signal line electrically connected with the touch electrode also extends to the lower frame area, the number of signal lines in the lower frame area is increased, the frame width of the lower frame area is difficult to be further compressed, and the further narrowing of the lower frame is not conducive.

[0038] In the display panel provided by the embodiment of the application, to solve the technical problem that the lower frame cannot be further narrowed, after introducing the touch function in the display panel, the part (i.e. the first line segment L11) of the same first touch signal line L1 located in the fan-out area Q01 and the part (i.e. the second line segment L12) of the same first touch signal line L1 located in the barrier wall area Q02 are arranged in different film layers, so that the number of signal lines located on a single film layer in the fan-out area Q01 is reduced, when the number of signal lines on the single film layer is reduced, the space size occupied by the signal lines in the fan-out area Q01 is also reduced, so that the width of the fan-out area Q01 is compressed, after introducing the first touch signal line L1 in the display panel, the further compression of the lower frame of the display panel is still realized, and the further narrowing of the lower frame of the display panel is realized.

[0039] In an optional embodiment of the application, the first line segment L11 and the second line segment L12 in the same first touch signal line L1 are made by using different mask plates.

[0040] When the first line segment L11 and the second line segment L12 in the same first touch signal line L1 are made by using different mask plates, two different mask processes can be used to make the first line segment L11 and the second line segment L12. For example, two different exposure capabilities can be used when making the first line segment L11 and the second line segment L12, and the exposure capability can be increased when making the first line segment L11 located in the fan-out area Q01. When the exposure capability is increased, the line width of the first line segment L11 formed correspondingly can be smaller, the distance between adjacent first line segments L11 can be smaller, so that the space occupied by the first line segment L11 in the fan-out area Q01 is reduced, and the space of the fan-out area Q01 is compressed, so that the lower frame area of the display panel can be further narrowed.

[0041] The first line segment L11 and the second line segment L12 in the first touch signal line L1 are manufactured by different masks, and the exposure capability of the first line segment L11 located in the fan-out area Q01 is improved, so that the first line segment L11 with smaller line width and pitch is obtained, the manufacturing process capability of the first line segment L11 in the fan-out area Q01 is improved, and the lower frame of the display panel is further compressed.

[0042] Figure 4 Another top view of the display panel provided by the embodiment of the present application is shown, which shows a scheme in which the touch electrodes on the display panel are mutual-capacitive touch electrodes.

[0043] Please refer to Figure 4 In an optional embodiment of the present application, the first touch electrodes T1 extend along a first direction D1 and are arranged along a second direction D2, and the first direction D1 and the second direction D2 intersect;

[0044] The first touch electrodes T1 are electrically connected to the first touch signal lines L1 one by one, and the end portion adjacent to the fan-out area Q01 of the first touch electrodes T1 is electrically connected to the first touch signal lines L1.

[0045] In an optional embodiment of the present application, the display panel further comprises second touch electrodes T2 and second touch signal lines L2 electrically connected to the second touch electrodes T2, the second touch electrodes T2 extend along the second direction D2 and are arranged along the first direction D1, and the second touch electrodes T2 are insulated from the first touch electrodes T1.

[0046] Specifically, please refer to Figure 4 This embodiment takes the first touch electrodes T1 in the display panel as an example of the touch electrodes extending in the longitudinal direction. In addition to the first touch electrodes T1 extending in the longitudinal direction, the display panel also includes second touch electrodes T2 extending in the transverse direction. This embodiment illustrates the first touch electrodes T1 and the second touch electrodes T2 by different fillings, one of the first touch electrodes T1 and the second touch electrodes T2 is a touch transmitting electrode, and the other is a touch sensing electrode. The first touch electrodes T1 and the second touch electrodes T2 are connected to the binding area Q03 through the touch signal lines. In the embodiment of the present application, the second touch signal lines L2 electrically connected to the second touch electrodes T2 are also led out to the fan-out area Q01, the barrier wall area Q02 and the binding area Q03. In actual application, the first touch signal can be sent to the touch transmitting electrode through the touch signal line, when the touch object touches the display panel, the coupling capacitance between the touch sensing electrode and the touch transmitting electrode will change, and the position where the change occurs is the touch position, thereby realizing the touch function of the display panel.

[0047] It should be noted that the structure of the second touch signal line L2 can refer to the structure of the first signal line in the embodiment of the present application, for example, the line segment in the fan-out area Q01 and the line segment in the barrier wall area Q02 of the second touch signal line L2 are located in different film layers, the line segment in the fan-out area Q01 and the line segment in the barrier wall area Q02 are made by using different mask plates, and the line segment in the fan-out area Q01 of the second touch signal line L2 is made by using a higher exposure degree. In this way, when the second touch electrode T2 and the second touch signal line L2 are introduced into the display panel, the line width of the line segment in the fan-out area Q01 of the second touch signal line L2 will also be smaller, and when this part of the line segment and the line segment in the barrier wall area Q02 are arranged in different film layers, it is also beneficial to reduce the space occupied by this part of the line segment in the fan-out area Q01, which is beneficial to further narrow the lower frame of the display panel while realizing the touch function of the display panel.

[0048] Figure 4 The embodiment shown shows a scheme in which the same first touch electrode T1 is electrically connected to one first touch signal line L1, and the second touch electrode T2 is also introduced into the fan-out area Q01 through the touch signal line and then introduced to the binding area Q03. In the embodiment of the present application, all touch signal lines located in the fan-out area Q01 can be designed differently, so that the part located in the fan-out area Q01 and the part located in the barrier wall area Q02 of the same touch signal line are located in different film layers and are made by using different exposure capabilities, so as to reduce the size of the touch signal line located in the fan-out area Q01, so that the lower frame of the display panel can be further compressed.

[0049] Figure 5 The embodiment shown is another top view of the display panel provided by the embodiment of the present application, and the touch electrode shown in the embodiment is also a mutual capacitance touch electrode, which is different from Figure 4 The difference is that the number of first touch signal lines L1 connected to the same first touch electrode T1 is different.

[0050] Please refer to Figure 5 In an optional embodiment of the present application, the first touch electrode T1 extends along the first direction D1 and is arranged along the second direction D2, and the first direction D1 and the second direction D2 intersect;

[0051] The first touch electrode T1 includes a first end portion and a second end portion arranged opposite to each other along the first direction D1, the first end portion is adjacent to the fan-out area Q01, and the second end portion B2 is located on the side of the first end portion B1 away from the fan-out area Q01; the first end portion B1 and the second end portion B2 of the same first touch electrode T1 are electrically connected to different first touch signal lines L1, respectively;

[0052] The non-display area Q0 further includes a first bezel area located on both sides of the display area Q1 along the second direction D2 and a second bezel area located opposite to the fan-out area Q01 along the first direction D1, and the first touch signal line L1 electrically connected with the second end B2 is routed to the fan-out area Q01 by the second bezel area and the first bezel area.

[0053] Specifically, since Figure 5 In the illustrated embodiment, the first touch electrode T1 extends along the longitudinal direction, and the distance between the first end B1 and the second end B2 of the first touch electrode T1 and the binding area Q03 is large. When the first touch electrode T1 is electrically connected with the first touch signal line L1 only through the first end B1, the signal strength transmitted from the first touch signal line L1 to the area close to the first end B1 of the first touch electrode T1 will be different from the signal strength transmitted to the area close to the second end B2 of the same first touch electrode T1, which may affect the touch detection effect. Therefore, two first touch signal lines L1 are provided for the same first touch electrode T1 in the embodiment, and the two first touch signal lines L1 are electrically connected with the first end B1 and the second end B2 of the first touch electrode T1, respectively. Optionally, the two first touch signal lines L1 electrically connected with the same first touch electrode T1 transmit the same touch signal, and optionally, the two first touch signal lines L1 electrically connected with the same first touch electrode T1 can be connected with the same conductive pad, or can be connected with different conductive pads, as long as the electrical signals transmitted by the two conductive pads connected with the two first touch signal lines L1 are the same.

[0054] In the embodiment of the application, the two first touch signal lines L1 are used to transmit touch signals to the first end B1 and the second end B2 of the same first touch electrode T1, which is beneficial to reduce the difference in the touch signals received by different areas of the same first touch electrode T1, and thus is beneficial to improve the touch detection effect. In addition, when the same first touch electrode T1 is electrically connected with the two first touch signal lines L1, the two first touch signal lines L1 ultimately extend to the binding area Q03, and the parts of the two first signal lines located in the fan-out area Q01 and the barrier wall area Q02 can also be made by using different exposure capabilities and by using different layers, so as to reduce the space occupied by the first touch signal line L1 in the fan-out area Q01, and thus further narrow the lower bezel of the display panel.

[0055] Figure 6 The same first touch signal line L1 is shown as a structural schematic diagram of different line segments in the same first touch signal line L1, and the connection relationship and extension direction of the first line segment L11, the second line segment L12 and the third line segment L13 in the same first touch signal line L1 are shown in the embodiment.

[0056] Please refer to Figure 5 and Figure 6In an alternative embodiment of the present application, the first touch signal line L1 further comprises a third line segment L13 located in the first frame region, and the third line segment L13 is electrically connected with the first line segment L11 in the same first touch signal line L1, wherein the line width of the first line segment L11 is smaller than the line width of the third line segment L13.

[0057] Specifically, when the same first touch electrode T1 is electrically connected with two first touch signal lines L1, the first touch signal line L1 electrically connected with the second end portion B2 of the first touch electrode T1 will be led out from the left frame or right frame region of the display panel to the lower frame region, Figure 6 The first touch signal line L1 shown can embody the general trend of the first touch signal line L1 electrically connected with the second end portion B2 of the first touch electrode T1, at this time, the third line segment L3 may, for example, be a line segment of the first touch signal line located in the left frame or right frame of the display panel. Of course, Figure 5 The first touch signal line L1 shown can also embody the general trend of the first touch signal line L1 electrically connected with the first end portion B1 of the first touch electrode T1, at this time, the third line segment L3 may, for example, be a line segment of the first touch signal line L1 located between the first end portion B1 of the first touch electrode T1 and the fan-out region Q01. Figure 6 Figure 5 The display panel provided by the embodiment of the present application further sets the line width of the first line segment L11 to be smaller than the line width of the third line segment L13 after the first line segment L11 and the second line segment L12 in the first touch signal line L1 are arranged in different layers, which is equivalent to compressing the line width of the first line segment L11, thereby reducing the space occupied by the first line segment L11 in the fan-out region Q01, reserving space for the width compression of the fan-out region Q01, and thus being beneficial to realizing the narrow lower frame design of the display panel.

[0058] The display panel provided by the embodiment of the present application further sets the line width of the first line segment L11 to be smaller than the line width of the third line segment L13 after the first line segment L11 and the second line segment L12 in the first touch signal line L1 are arranged in different layers, which is equivalent to compressing the line width of the first line segment L11, thereby reducing the space occupied by the first line segment L11 in the fan-out region Q01, reserving space for the width compression of the fan-out region Q01, and thus being beneficial to realizing the narrow lower frame design of the display panel.

[0059] Figure 7 The display panel provided by the embodiment of the present application further sets the line width of the first line segment L11 to be smaller than the line width of the third line segment L13 after the first line segment L11 and the second line segment L12 in the first touch signal line L1 are arranged in different layers, which is equivalent to compressing the line width of the first line segment L11, thereby reducing the space occupied by the first line segment L11 in the fan-out region Q01, reserving space for the width compression of the fan-out region Q01, and thus being beneficial to realizing the narrow lower frame design of the display panel.

[0060] Please refer to Figure 7 In an alternative embodiment of the present application, the third line segment L13 and the first line segment L11 are arranged in different layers in the same first touch signal line L1.

[0061] ​Specifically, the third line segment L13 is shown to be arranged in a different layer from the first line segment L11, and the third line segment L13 and the first line segment L11 in the same first touch signal line L1 can be electrically connected by wire switching through a via. Considering that the film layer in which the third line segment L13 is arranged can also be provided with other signal lines, if the first touch signal line L1 does not perform wire switching in the fan-out area Q01, it will result in too many signal lines in the film layer, which is difficult to realize the narrow bottom frame design of the display panel. The first touch signal line L1 is designed to perform wire switching when it reaches the fan-out area Q01 in the embodiment of the application, and the first line segment L11 of the fan-out area Q01 is arranged in a different film layer from the third line segment L13, thereby reducing the number of signal lines in the same film layer in the fan-out area Q01. Compared with the scheme of arranging a plurality of signal lines in the same film layer, it is beneficial to reduce the width of the fan-out area Q01, thereby further compressing the width of the bottom frame of the display panel.

[0062] With continued reference to Figure 7 In an optional embodiment of the application, the second line segment L12 and the third line segment L13 are arranged in different layers in the same first signal line.

[0063] Specifically, Figure 7 The first line segment L11, the second line segment L12 and the third line segment L13 in the embodiment shown are respectively arranged in different film layers and can be electrically connected by wire switching through a via. When the second line segment L12 and the third line segment L13 are arranged in different layers, compared with the scheme of arranging them in the same layer, the space occupied by the first touch signal line L1 in the bottom frame area of the display panel can be reduced, thereby facilitating the further narrow design of the bottom frame of the display panel.

[0064] Figure 7 A film layer position relationship of the first line segment L11, the second line segment L12 and the third line segment L13 in the first touch signal line L1 is shown, wherein it is assumed that the metal layers in the bottom frame area include three upper, middle and lower layers, the second line segment L12 is arranged in the lowermost layer of the metal layer, the first line segment L11 is arranged in the middle layer of the metal layer, and the third line segment L13 is arranged in the uppermost layer of the metal layer. In some other embodiments of the application, the relative position relationship of the first line segment L11, the second line segment L12 and the third line segment L13 can also be other, for example, please refer to Figure 8 , Figure 8 Another arrangement diagram of the first touch signal line L1 in different areas of the display panel provided by the embodiment of the application is shown. Figure 8In the shown embodiment, the first line segment L11 is located in the lowest metal layer, the second line segment L12 is located in the middle metal layer, and the third line segment L13 is located in the uppermost metal layer. Similarly, the first line segment L11 and the second line segment L12 in the same first touch signal line L1, and the first line segment L11 and the third line segment L13 can be connected through vias.

[0065] Figure 7 and Figure 8 The shown embodiment shows two distribution embodiments of the first line segment L11, the second line segment L12 and the third line segment L13. In some other embodiments of the present application, the first line segment L11, the second line segment L12 and the third line segment L13 can also be embodied in other film layer corresponding relationships, as long as the first line segment L11 and the second line segment L12 are arranged in different layers, and the present application will not be listed one by one.

[0066] Continuing to refer to Figure 7 and Figure 8 In an optional embodiment of the present application, for the first line segment L11, the second line segment L12 and the third line segment L13 in the first touch signal line L1, the third line segment L13 is made with the same mask plate as the first line segment L11, or the third line segment L13 is made with the same mask plate as the second line segment L12.

[0067] In the display panel provided by the embodiment of the present application, a separate mask plate is introduced for the manufacture of the second line segment L12, and the exposure capability in the manufacturing process of the second line segment L12 is improved, so that the line width of the second line segment L12 and the spacing between adjacent second line segments L12 are both reduced. At this time, the first line segment L11 and the third line segment L13 can be made with the same mask plate. When the first line segment L11 and the second line segment L12 are located in different film layers, the film layer with a lower position can be made by the mask plate first, and then the film layer with a higher position can be made by the same mask plate. The two film layers are made by the same mask plate, which is beneficial to simplify the total number of mask plates required in the manufacturing process of the display panel and simplify the manufacturing process of the display panel.

[0068] Of course, in some other embodiments of the present application, the third line segment L13 in the first touch signal line L1 can also be made with the same mask plate as the second line segment L12. When the third line segment L13 and the first line segment L11 are located in different film layers and are manufactured respectively, the mask plate used is the same mask plate, so it is also beneficial to reduce the total number of mask plates required in the manufacturing of the display panel, and it is also beneficial to simplify the manufacturing process of the display panel.

[0069] In the first touch signal line L1, the third line segment L13 can be manufactured by using the same mask plate as the first line segment L11, or can be manufactured by using the same mask plate as the second line segment L12. In this way, the three different line segments are manufactured by using two mask plates, which is beneficial to simplify the manufacturing process of the display panel.

[0070] It should be noted that only the first line segment L11, the second line segment L12 and the third line segment L13 of the first touch signal line L1 in the display panel are described in the above embodiments. For details, please refer to Figure 9 The second line segment L12 located in the barrier wall area Q02 can be finally led out to the sidewall of the barrier wall 80, that is, the wire on the sidewall of the barrier wall 80 can be directly used as the second line segment L12, or can be electrically connected to the second line segment L12 through a via hole, for example, please refer to Figure 9 , Figure 9 Another arrangement of the first touch signal line L1 in different areas of the display panel provided by the embodiment of the present application is shown.

[0071] It should be noted that the above embodiments of the present application only take the mutual-capacitive touch electrode structure as an example to describe the structure of the touch signal line in the present application. For the touch signal line in the self-capacitive touch electrode structure, the structure of the first touch signal line L1 in the present application can also be referred to. The part of the touch signal line located in the fan-out area Q01 and the part located in the barrier wall area Q02 are arranged separately, so that the line width of the touch signal line in the fan-out area Q01 and the spacing between the adjacent touch signal lines are both small, thereby reducing the size of the space occupied by the touch signal line in the fan-out area Q01, so that the fan-out area Q01 can be compressed, which is further beneficial to further reduce the width of the lower frame of the display panel, and realize the further narrow design of the lower frame of the display panel.

[0072] It can be understood that the display panel provided by the embodiment of the present application also includes an array layer 20, Figure 10 Another arrangement of the first touch signal line L1 in different areas of the display panel provided by the embodiment of the present application is shown. Figure 1Fig. 2 shows a AA cross-sectional view of the display panel, and the array layer 20 is provided with a driving circuit structure, such as a thin film transistor. The array layer 20 at least includes a first metal layer and a second metal layer, wherein the gate of the thin film transistor is located in the first metal layer, and the source / drain of the thin film transistor is located in the second metal layer. The film layer where the first line segment L11, the second line segment L12 and the third line segment L13 of the first touch signal line L1 are located in the above-mentioned embodiment of the display panel is other film layer than the above-mentioned first metal layer and the second metal layer, which can be regarded as a metal film layer introduced in the display panel on the basis of the above-mentioned first metal layer and the second metal layer, and optionally, the adjacent two metal film layers are isolated by an insulating layer. Generally, the scan line S in the display panel is located in the above-mentioned first metal layer, and the data line D and the power line are located in the above-mentioned second metal layer, and when these signal lines are introduced into the lower frame area of the display panel, they have occupied a large space in the lower frame area. When the touch function is introduced in the display panel, the corresponding touch signal line is introduced, and the line segment (such as the first line segment L11 and the second line segment L12) of the touch signal line in the lower frame area is set as other film layer, but not set in the first metal layer and the second metal layer, which is beneficial to avoid the problem that the increase of the signal line in the first metal layer and the second metal layer leads to the fact that the lower frame of the display panel cannot be further compressed. When the first line segment L11 and the second line segment L12 are set in other metal film layer than the first metal layer and the second metal layer, and the first line segment L11 and the second line segment L12 are set in different layers, it is beneficial to reduce the number of signal lines in the same film layer, and further provide a compressible space for the display panel, so that the lower frame of the display panel can be further narrowed.

[0073] It should be further noted that the display panel provided by the embodiment of the present application can be an organic electroluminescent display panel, and can also be a liquid crystal display panel, and the like. When the display panel is an organic electroluminescent display panel, its structure can refer to the structure of the organic electroluminescent display panel shown in Fig. 3. Figure 10Optionally, the display panel comprises a substrate 10, an array layer 20 arranged on the substrate 10, a light-emitting layer 30 arranged on the array layer 20 away from the substrate 10, and an encapsulation layer arranged on the light-emitting layer 30 away from the substrate 10. Optionally, the array layer 20 comprises a plurality of transistors. The light-emitting layer 30 comprises a first electrode 31, a second electrode 32, and a light-emitting material layer 33 between the first electrode 31 and the second electrode 32. An electrical signal can be provided to the second electrode 32 through the array layer 20, and another electrical signal can be provided to the first electrode 31, under the driving of the electrical signals provided by the first electrode 31 and the second electrode 32, the light-emitting material layer 33 will emit light. Optionally, the second electrode 32 is electrically connected with the transistors in the array layer 20. Optionally, the encapsulation layer comprises a first inorganic layer 41, a second inorganic layer 42, and an organic layer 43 between the first inorganic layer 41 and the second inorganic layer 42. The encapsulation layer 40 can isolate the light-emitting layer 30 from the moisture and oxygen in the external environment, so as to avoid the influence of the moisture and oxygen in the external environment on the normal light emission of the light-emitting layer 30.

[0074] For the specific structure of the display panel of other types, refer to the design in the prior art, and the present application will not be described here.

[0075] Based on the same inventive concept, the present application also provides a display device, Figure 11 As shown is a structural schematic diagram of a display device provided by an embodiment of the present application, the display device 200 comprises the display panel 100 provided by any of the above embodiments of the present application. After introducing the touch function into the display panel, the embodiment of the present application arranges the part of the same first touch signal line located in the fan-out area and the part of the same first touch signal line located in the barrier wall area in different film layers, so that the number of signal lines located on a single film layer in the fan-out area is reduced, and when the number of signal lines on a single film layer is reduced, the space size occupied by the signal lines in the fan-out area is also reduced, so that the width of the fan-out area is compressed. After introducing the first touch signal line into the display panel, the further compression of the lower frame of the display device can still be realized, and the further narrowing of the lower frame of the display device is realized.

[0076] It should be noted that the embodiments of the display device provided by the present application can refer to the embodiments of the display panel in the present application, and the repeated parts will not be described here. The display device provided by the embodiment of the present application can be embodied as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, or any product or component with a display function.

[0077] In summary, the display panel and the display device provided by the present application at least achieve the following beneficial effects:

[0078] The display panel and the display device provided by the application, wherein the non-display area comprises a fan-out area, a barrier area and a binding area arranged in sequence along the first direction, and the binding area is used for binding a control chip or a flexible circuit board. The area where the fan-out area, the barrier area and the binding area are located is the lower frame area of the display panel. The display panel in the application has a touch function, and the first touch electrode is arranged in the display area. The first touch signal line electrically connected with the first touch electrode extends to the lower frame area and is finally electrically connected with the conductive pad of the binding area to realize the transmission of the touch signal. In particular, the part of the same first touch signal line located in the fan-out area and the part located in the barrier area are arranged in different film layers, so that the number of signal lines arranged on a single film layer is reduced. When the number of signal lines arranged on a single film layer is reduced, the space size occupied by the signal lines in the fan-out area is also reduced, so that the width of the fan-out area is compressed, and the further compression of the lower frame of the display panel and the display device is realized, and the further narrowing of the lower frame of the display panel and the display device is realized.

[0079] Although some specific embodiments of the application have been described in detail by examples, those skilled in the art should understand that the above examples are only for illustration, and are not intended to limit the scope of the application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the application. The scope of the application is defined by the appended claims.

Claims

1. A display panel, characterized by, The display panel comprises a display area and a non-display area, the non-display area comprises a fan-out area, a barrier wall area and a binding area arranged along a first direction; the barrier wall area is located on a side of the fan-out area away from the display area, and the binding area is located on a side of the barrier wall area away from the fan-out area. The display panel comprises a first touch electrode and a first touch signal line electrically connected with the first touch electrode, wherein the first touch electrode is located in the display area, and the first touch signal line is located at least in the non-display area; the same first touch signal line comprises at least a first segment located in the fan-out area and a second segment located in the barrier wall area, the first segment and the second segment are electrically connected, and the first segment and the second segment are arranged in different layers. The first segment and the second segment are made by using different mask plates, so that the line width of the first segment is smaller than the line width of the second segment.

2. The display panel of claim 1, wherein, The first touch electrode extends along the first direction and is arranged along a second direction, and the first direction and the second direction intersect. The first touch electrode and the first touch signal line are electrically connected one by one, and the end part adjacent to the fan-out area of the first touch electrode is electrically connected with the first touch signal line.

3. The display panel of claim 1, wherein, The first touch electrode extends along the first direction and is arranged along a second direction, and the first direction and the second direction intersect. The first touch electrode comprises a first end part and a second end part oppositely arranged along the first direction, the first end part is adjacent to the fan-out area, and the second end part is located on a side of the first end part away from the fan-out area; the first end part and the second end part of the same first touch electrode are electrically connected with different first touch signal lines respectively; The non-display area further comprises a first frame area located on both sides of the display area along the second direction and a second frame area oppositely arranged with the fan-out area along the first direction, and the first touch signal line electrically connected with the second end part is routed to the fan-out area by the second frame area and the first frame area.

4. The display panel of claim 3, wherein, The first touch signal line further comprises a third segment located in the first frame area, and in the same first touch signal line, the third segment is electrically connected with the first segment, wherein the line width of the first segment is smaller than the line width of the third segment.

5. The display panel of claim 4, wherein, The third segment and the first segment are arranged in different layers.

6. The display panel of claim 4, wherein, The second segment and the third segment are arranged in different layers.

7. The display panel of claim 4, wherein, The third segment and the first segment are made by using the same mask plate, so that the line width of the third segment is equal to the line width of the first segment, and the line width of the third segment is smaller than the line width of the second segment; or, the third segment and the second segment are made by using the same mask plate, so that the line width of the third segment is equal to the line width of the second segment, and the line width of the first segment is smaller than the line width of the third segment.

8. The display panel of claim 1 or 2, wherein, The display panel further comprises a second touch electrode and a second touch signal line electrically connected with the second touch electrode, the second touch electrode extends along a second direction and is arranged along a first direction, the second touch electrode is insulated from the first touch electrode, and the first direction and the second direction intersect.

9. A display device, characterized by comprising: The display panel according to any one of claims 1 to 8.

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