Display panel and display device

Abstract

The present invention discloses a display panel and a display device, wherein the display panel has a display area and a non-display area that are adjacently arranged, and the display panel comprises: a substrate; a touch layer, which is located in the display area and is arranged on one side of the substrate, wherein the touch layer comprises a first touch electrode extending in a first direction and arranged in a second direction, and a second touch electrode extending in the second direction and arranged in the first direction; a touch signal line, wherein the touch signal line comprises a first touch line and a second touch line, wherein the first touch line is electrically connected to the first touch electrode, and the second touch line is electrically connected to the second touch electrode; wherein at least one of the first touch line and the second touch line is located in the display area. By making at least one of the first touch line and the second touch line located in the display area, the space occupied by the first touch line and / or the second touch line in the non-display area is reduced, thereby reducing the border width of the display panel and improving the user experience.

Description

Technical Field

[0001] The present invention belongs to the technical field of electronic products, and in particular relates to a display panel and a display device. Background Art

[0002] In recent years, touch technology has been increasingly used in display devices of various sizes. As a new type of human-computer interaction input display panel, touch display panel is simpler, more direct and more convenient than traditional monitor, keyboard and mouse input methods.

[0003] To realize the touch function of the display panel, it is usually necessary to introduce touch electrodes into the display panel and send touch signals to the touch electrodes through touch signal lines. Due to the structural wiring limitations of existing display panels, the touch signal lines will affect the border width of the display panel, resulting in the border width of the display panel being too large, affecting the user experience.

[0004] Therefore, a new display panel and display device are urgently needed. Summary of the invention

[0005] An embodiment of the present invention provides a display panel and a display device, wherein at least one of a first touch line and a second touch line is located in a display area, that is, a portion of the first touch line and / or the second touch line is moved from a non-display area to a display area, so as to reduce the space occupied by the first touch line and / or the second touch line in the non-display area, thereby reducing the border width of the display panel and improving the user experience.

[0006] In a first aspect, an embodiment of the present invention provides a display panel having a display area and a non-display area arranged adjacent to each other, the display panel comprising: a substrate; a touch layer located in the display area and arranged on one side of the substrate, the touch layer comprising a first touch electrode extending along a first direction and arranged in a second direction, and a second touch electrode extending along the second direction and arranged in the first direction; a touch signal line, the touch signal line comprising a first touch line and a second touch line, the first touch line being electrically connected to the first touch electrode, and the second touch line being electrically connected to the second touch electrode; wherein at least one of the first touch line and the second touch line is located in the display area.

[0007] In a second aspect, an embodiment of the present invention provides a display device, comprising: a display panel, wherein the display panel is the display panel in any of the above embodiments.

[0008] Compared with the related art, the display panel provided by the embodiment of the present invention includes a substrate, a touch layer and a touch signal line. The first touch line of the touch signal line is electrically connected to the first touch electrode, and the second touch line is electrically connected to the second touch electrode to transmit touch signals to the first touch electrode and the second touch electrode respectively. At least one of the first touch line and the second touch line is located in the display area, that is, a part of the first touch line and / or the second touch line is moved from the non-display area to the display area to reduce the space occupied by the first touch line and / or the second touch line in the non-display area. Part of the first touch electrode and / or the second touch electrode located at the edge of the display area can be cancelled to use the provided space to set the first touch line and / or the second touch line, thereby reducing the border width of the display panel and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0010] Figure 1 is a schematic structural diagram of a display panel provided according to an embodiment of the present invention;

[0011] Figure 2 yes Figure 1 The film layer structure diagram of an embodiment at BB in the middle;

[0012] Figure 3 is a schematic structural diagram of a display panel provided according to another embodiment of the present invention;

[0013] Figure 4 is a schematic structural diagram of a display panel provided according to yet another embodiment of the present invention;

[0014] Figure 5 is a schematic structural diagram of a display panel provided according to yet another embodiment of the present invention;

[0015] Figure 6 is a schematic structural diagram of a display panel provided according to yet another embodiment of the present invention;

[0016] Figure 7 yes Figure 4 A partial enlarged view of an embodiment at C in the middle;

[0017] Figure 8 yes Figure 1 The film layer structure diagram of another embodiment at BB in the middle;

[0018] Fig. 9 yes Figure 1 The film layer structure diagram of another embodiment at BB in the middle;

[0019] Fig.10 yes Figure 1 The film layer structure diagram of another embodiment at BB in the middle;

[0020] Fig.11 yes Figure 4 A partial enlarged view of another embodiment at C in the middle;

[0021] Fig.12 yes Figure 1 The film layer structure diagram of another embodiment at BB in the middle;

[0022] Fig.13 yes Figure 1 The film layer structure diagram of another embodiment at BB in the middle;

[0023] Fig.14 It is a schematic diagram of the structure of a display device provided according to an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is merely to provide a better understanding of the present invention by illustrating examples of the present invention.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0026] In the related art, since the control chip is usually arranged below the display area of ​​the display panel, the touch signal lines connected to the control chip are also arranged side by side in the non-display area below the display area of ​​the display panel, that is, the frame part, which causes the frame of the display panel to be too large, affecting the user experience.

[0027] In order to solve the above problems, an embodiment of the present invention provides a display panel, in which at least one of the first touch line and the second touch line is located in the display area to reduce the space occupied by the first touch line and / or the second touch line in the non-display area, thereby reducing the border width of the display panel and improving the user experience.

[0028] In order to better understand the present invention, Figures 1 to 14 A display panel and a display device according to embodiments of the present invention are described in detail.

[0029] Please also read Figures 1 to 4 , Figure 1 is a schematic structural diagram of a display panel provided according to an embodiment of the present invention; Figure 2 yes Figure 1 The film layer structure diagram of an embodiment at BB in the middle; Figure 3 is a schematic structural diagram of a display panel provided according to another embodiment of the present invention; Figure 4 is a schematic structural diagram of a display panel provided according to yet another embodiment of the present invention.

[0030] An embodiment of the present invention provides a display panel having a display area AA and a non-display area NA that are adjacently arranged, the display panel comprising: a substrate 1; a touch layer 2, located in the display area AA and arranged on one side of the substrate 1, the touch layer 2 comprising a first touch electrode 21 extending along a first direction X and arranged in a second direction Y, and a second touch electrode 22 extending along the second direction Y and arranged in the first direction X; a touch signal line 3, the touch signal line 3 comprising a first touch wiring 31 and a second touch wiring 32, the first touch wiring 31 is electrically connected to the first touch electrode 21, and the second touch wiring 32 is electrically connected to the second touch electrode 22; wherein, at least one of the first touch wiring 31 and the second touch wiring 32 is located in the display area AA.

[0031] The display panel provided by the embodiment of the present invention includes a substrate 1, a touch layer 2 and a touch signal line 3. The first touch line 31 of the touch signal line 3 is electrically connected to the first touch electrode 21, and the second touch line 32 is electrically connected to the second touch electrode 22 to transmit touch signals to the first touch electrode 21 and the second touch electrode 22 respectively. At least one of the first touch line 31 and the second touch line 32 is located in the display area AA, that is, a part of the first touch line 31 and / or the second touch line 32 is moved from the non-display area NA to the display area AA to reduce the space occupied by the first touch line 31 and / or the second touch line 32 in the non-display area NA. Part of the first touch electrode 21 and / or the second touch electrode 22 located at the edge of the display area AA can be cancelled, so that the first touch line 31 and / or the second touch line 32 can be set using the provided space, thereby reducing the border width of the display panel and improving the user experience.

[0032] It should be noted that at least one of the first touch wiring 31 and the second touch wiring 32 is located in the display area AA, which means that a portion of the first touch wiring 31 can be located in the display area AA, and the other portion is located in the non-display area NA. Figure 3 As shown, or, a portion of the second touch line 32 may be located in the display area AA, and another portion may be located in the non-display area NA. Figure 4 Alternatively, the first touch wiring 31 and the second touch wiring 32 are at least partially located in the display area AA, as shown in FIG. Figure 1 As shown, there is no special limitation.

[0033] Since the space in the display area AA is limited, optionally, when the first touch lines 31 and the second touch lines 32 need to be electrically connected to the control chip IC in the non-display area NA, usually not all of the first touch lines 31 and the second touch lines 32 are arranged in the display area AA.

[0034] The first touch line 31 and the second touch line 32 in the embodiment of the present invention can also be understood as not including the part of the connection line with the control chip IC. Therefore, the first touch line 31 and the second touch line 32 may not pass through the non-display area NA, that is, at least one of the first touch line 31 and the second touch line 32 may be entirely located in the display area AA.

[0035] Optionally, in order to leave space for arranging the first touch wiring 31 and / or the second touch wiring 32 in the display area AA, a part of the first touch electrode 21 and the second touch electrode 22 may be replaced by the first touch wiring 31 and / or the second touch wiring 32 .

[0036] The touch layer 2 in the embodiment of the present invention adopts a mutual capacitance structure, and one of the first touch electrode 21 and the second touch electrode 22 can be a touch driving electrode, and the other can be a touch sensing electrode. For example, the first touch electrode 21 is a touch sensing electrode, and the second touch electrode 22 is a touch driving electrode. The first touch electrode 21 and the second touch electrode 22 can be electrically connected to the control chip IC through the first touch wiring 31, the second touch wiring 32, and the second touch wiring 32 are used to send the touch driving signal sent by the control chip IC to the second touch electrode 22, and transmit the touch sensing signal generated by the first touch electrode 21 back to the control chip IC through the first touch wiring 31.

[0037] The touch signal line 3 can be made of a single metal layer such as molybdenum or a titanium-aluminum-titanium composite metal layer. Specifically, molybdenum has good conductivity and does not deflect light. The touch signal line 3 can be made of a molybdenum-aluminum-molybdenum composite metal layer, which has relatively low resistance, small signal attenuation, and good signal transmission effect.

[0038] The substrate 1 can be a hard substrate, such as a glass substrate, or a flexible substrate, and its material can be polyimide, polystyrene, polyethylene terephthalate, polyparaxylene, polyethersulfone or polyethylene naphthalate. The substrate 1 is mainly used to support the device disposed thereon.

[0039] The display panel provided in the embodiment of the present invention has a display area AA and a non-display area NA which are arranged adjacent to each other. The display area AA is an area capable of performing light-emitting display and provided with a light-emitting element. The display panel provided in the embodiment of the present invention may be an organic light-emitting diode (OLED) display panel, a quantum dot light-emitting diode (QLED) or a micro flat display panel (Micro-OLED or Micro-LED). The following description will be made by taking the display panel as an OLED display panel as an example.

[0040] See also Figure 3 In some optional embodiments, at least part of the first touch-sensing traces 31 are located in the display area AA.

[0041] In this embodiment, part of the first touch lines 31 can be arranged in the display area AA to reduce the space occupied by the first touch lines 31 in the non-display area NA. In order to enable the display area AA to have enough space to accommodate part of the first touch lines 31, at least part of the first touch electrodes 21 adjacent to the first touch lines 31 can be replaced with the first touch lines 31.

[0042] Specifically, it means that part of the first touch wiring 31 and the first touch electrode 21 located in the display area AA can be formed by the same process, and the part of the first touch wiring 31 located in the display area AA can have the same structural shape as the first touch electrode 21, but the first touch wiring 31 is only used to transmit touch signals, and has no function of forming an electric field between the first touch electrode 21 and the second touch electrode 22. It can also be understood that part of the first touch electrode 21 is replaced by the first touch wiring 31, and the first touch wiring 31 can occupy part of the space originally set by the first touch electrode 21 in the display area AA.

[0043] like Figure 1 and Figure 3As shown in the figure, when a plurality of first touch lines 31 are arranged in the display area AA, the length of the first touch lines 31 located on the outside is greater than the length of the first touch lines 31 located on the inside, so as to facilitate the first touch lines 31 and the first touch electrodes 21 arranged along the second direction Y and located in different columns. The inside and the outside can be understood as the distance relative to the non-display area NA, that is, the first touch lines 31 on the outside are closer to the non-display area NA.

[0044] like Figure 1 and Figure 3 As shown, in some optional embodiments, the first touch wiring 31 includes a first sub-touch wiring 311 and a second sub-touch wiring 312, the first sub-touch wiring 311 is located in the display area AA, and the second sub-touch wiring 312 is located in the non-display area NA.

[0045] It is understandable that, due to the limited space in the display area AA, part of the first touch line 31 is located in the display area AA, namely the first sub-touch line 311, and part of the first touch line 31 is located in the non-display area NA, namely the second sub-touch line 312. Figure 1 and 3 As shown, the first touch line 31 on the side away from the control chip IC is routed from the non-display area NA, that is, the second sub-touch line 312, and the first touch line 31 on the side close to the control chip IC is routed from the display area AA, that is, the first sub-touch line 311, so as to avoid winding, reduce the routing length, and thus reduce the impedance.

[0046] The first sub-touch wiring 311 and the second sub-touch wiring 312 can both be connected to the first touch electrodes 21 arranged along the second direction Y and located in different columns, that is, there is no substantial difference between the signals transmitted by the first sub-touch wiring 311 and the second sub-touch wiring 312, and the two are only different in wiring positions.

[0047] like Figure 1 As shown, when the first sub-touch wiring 311 is connected to the first touch electrode 21 from the display area AA, the frame width of the display panel along the P direction can be reduced.

[0048] like Figure 1 and Figure 3 As shown, in some optional embodiments, the first sub-touch line 311 includes a first line segment d1 located in the display area AA and extending along the first direction X, and the second sub-touch line 312 includes a second line segment d2 located in the non-display area NA and extending along the first direction X.

[0049] It should be noted that, since both the first sub-touch routing 311 and the second sub-touch routing 312 need to be connected to the first touch electrodes 21 extending along the first direction X and arranged in the second direction Y, in this embodiment, by making the first routing segment d1 located in the display area AA and the second routing segment d2 located in the non-display area NA extend along the first direction X, on the one hand, the regularity of the wiring can be improved, and on the other hand, it can also facilitate the connection of the first sub-touch routing 311 and the second sub-touch routing 312 with the first touch electrodes 21 located in different rows along the second direction Y.

[0050] Optionally, the first routing segment d1 and the second routing segment d2 have the same routing length extending along the first direction X and are arranged in sequence in the second direction Y to avoid mutual interference and improve the impedance uniformity and wiring regularity of the first routing segment d1 and the second routing segment d2.

[0051] Optionally, it also includes a connecting segment (not marked in the figure) located in the non-display area NA, the first routing segment d1 and the second routing segment d2 are respectively connected to the connecting segment, and the connecting segment at least partially extends along the second direction Y, and each connecting segment is respectively connected to the first touch electrodes 21 located in different rows along the second direction Y.

[0052] In this embodiment, the first routing segment d1 can be understood as a portion of the routing that is originally located in the non-display area NA and moved to the display area AA compared to the related art. Optionally, according to the space size of the display area AA, multiple first routing segments d1 arranged along the second direction Y can be set in the display area AA, and the maximum width of the arrangement structure formed by each first routing segment d1 along the second direction Y is the border width of the display panel that can be reduced along the second direction Y.

[0053] In this embodiment, the first routing segment d1 can be arranged side by side with the adjacent second routing segment d2 along the second direction Y, but one is located in the display area AA and the other is located in the non-display area NA, so as to improve the regularity of the routing arrangement and facilitate layout.

[0054] like Figure 1 and Figure 3 As shown, in some optional embodiments, the display panel further includes a light emitting device layer 4, the light emitting device layer 4 includes a plurality of light emitting units F, the first wiring segment d1 is located between two light emitting units F, and the first wiring segment d1 is zigzag or wavy.

[0055] In this embodiment, the first routing segment d1 is located between the two light emitting units F, so that the first routing segment d1 avoids the light emitting units F, so as to avoid the first routing segment d1 blocking the light emitting units F and affecting the normal light emission of the light emitting units F. Specifically, the orthographic projection of the first routing segment d1 on the substrate 1 and the orthographic projection of the light emitting units F on the substrate do not overlap, so as to avoid the first routing segment d1 blocking the light emitting units F, which can be achieved by adjusting the routing path of the first routing segment d1, that is, the first routing segment d1 in this embodiment can be in a sawtooth shape or a wavy shape.

[0056] In order to clearly show the relative position and connection relationship between the touch layer 2 and the touch signal line 3 and avoid the light emitting unit F interfering with the display of the touch layer 2 or the touch signal line 3, Figure 1 and Figure 3 Only part of the light emitting units F are shown, and not all of the light emitting units F are shown.

[0057] Optionally, at least one light emitting unit F is included between adjacent first routing segments d1, that is, adjacent first routing segments d1 can be routed from different positions, for example, one light emitting unit F or more light emitting units F are spaced between adjacent first routing segments d1 to avoid mutual interference between adjacent first routing segments d1.

[0058] like Figure 1 and Figure 4 As shown, in some optional embodiments, at least part of the second touch-sensing traces 32 are located in the display area AA.

[0059] It can be understood that, similar to the first touch line 31, at least a portion of the second touch line 32 can be moved from the non-display area NA to the display area AA to reduce the space occupied by the first touch line 31 in the non-display area NA. In order to enable the display area AA to have enough space to accommodate part of the second touch line 32, part of the second touch electrode 22 adjacent to the second touch line 32 can be replaced with the first touch line 31.

[0060] It should be noted that the first touch wiring 31 and the second touch wiring 32 can be at least partially located in the display area AA at the same time, that is, the first touch wiring 31 and the second touch wiring 32 can be completely located in the display area AA, or the first touch wiring 31 and the second touch wiring 32 can each be partially located in the display area AA.

[0061] Alternatively, considering the limited wiring space in the display area AA, only one of the first touch line 31 and the second touch line 32 may be at least partially located in the display area AA. Specifically, only the first touch line 31 may be entirely or partially located in the display area AA, while the second touch line 32 is located in the non-display area NA. Alternatively, only the second touch line 32 may be entirely or partially located in the display area AA, while the first touch line 31 is located in the non-display area NA. There is no special limitation.

[0062] like Figure 1 and Figure 3 As shown, in some optional embodiments, the second touch wiring 32 includes a third sub-touch wiring 321 and a fourth sub-touch wiring 322, the third sub-touch wiring 321 is located in the display area AA, and the fourth sub-touch wiring 322 is located in the non-display area NA.

[0063] In this embodiment, the second touch line 32 is partially located in the display area AA and partially located in the non-display area NA to avoid the display area AA being unable to accommodate all of the second touch lines 32, that is, the third sub-touch line 321 of the second touch line 32 is located in the display area AA. Under the premise of not affecting the display, the number of wirings of the second touch line 32 set in the non-display area NA can be reduced, thereby reducing the border width of the non-display area NA corresponding to the part where the second touch line 32 is set.

[0064] like Figure 1 and Figure 3 As shown, in some optional embodiments, the third sub-touch line 321 includes a third line segment d3 located in the display area AA and extending along the first direction X, and the fourth sub-touch line 322 includes a fourth line segment d4 located in the non-display area NA and extending along the first direction X.

[0065] It should be noted that, since the second touch lines 32 need to be connected to the second touch electrodes 22 arranged along the second direction Y and the first direction X, the routing lengths of the third routing segments d3 and the fourth routing segments d4 along the first direction X can be adjusted so that the second touch lines 32 are connected to the second touch electrodes 22 located in different columns along the first direction X.

[0066] Optionally, a plurality of third sub-touch lines 321 are provided in the display area AA, and each third sub-touch line 321 is arranged along the second direction Y. It can be understood that since the number of second touch electrodes 22 is fixed, the required number of second touch lines 32 is also fixed. When the number of third sub-touch lines located in the display area AA is larger, the number of fourth sub-touch lines 322 located in the non-display area NA can be correspondingly smaller, thereby reducing the border width of the portion of the non-display area NA where the fourth sub-touch lines 322 are provided.

[0067] like Figure 1 or Figure 4 As shown, by arranging part of the third wiring segment d3 in the display area AA and extending along the first direction X, the border width of the display panel along the second direction Y can be reduced.

[0068] Optionally, the third routing segment d3 is located between two light emitting units F and is zigzag or wavy. Like the first routing segment d1, the third routing segment d3 is zigzag or wavy to avoid the light emitting unit F, thereby preventing the third routing segment d3 from blocking the light emitting unit F and affecting the light output.

[0069] Optionally, at least one light emitting unit F is included between adjacent third wiring segments d3 to avoid mutual interference between adjacent third wiring segments d3.

[0070] Optionally, in addition to the first routing segment d1 and the third routing segment d3 , other portions of the first touch routing segment 31 and the second touch routing segment 32 located in the display area AA may also be zigzag or wavy in shape to avoid blocking the light emitting unit F.

[0071] See also Figure 5 , Figure 5 It is a structural schematic diagram of a display panel provided according to another embodiment of the present invention; in some optional embodiments, the first touch wiring 31 includes a fifth wiring segment d5 located in the display area AA, and each fifth wiring segment d5 is arranged in the gap between the first touch electrode 21 and the second touch electrode 22 to connect the first touch electrodes 21 located in different rows along the second direction Y.

[0072] The fifth routing segment d5 in this embodiment can be routed through the gap between the first touch electrode 21 and the second touch electrode 22, and no longer needs to be wound from the non-display area NA, which effectively reduces the routing length of the first touch routing line 31, thereby reducing the impedance of the first touch routing line 31 and improving the touch signal transmission effect of the first touch routing line 31. At the same time, since the fifth routing segment d5 is routed directly from the gap between the first touch electrode 21 and the second touch electrode 22, it can also reduce the routing space occupied by the first touch routing line 31 in the non-display area NA, thereby reducing the border width of the display panel.

[0073] Optional, such as Figure 5 As shown, at least two fifth wiring segments d5 can be routed through the gap between the first touch electrode 21 and the second touch electrode 22 at the same position, which is convenient for forming.

[0074] Optionally, there are N columns of fifth routing segments d5, and the fifth routing segment d5 in the mth column and the fifth routing segment d5 in the m+1th column are located in the gap between the first touch electrode 21 and the second touch electrode 22 at the same position to facilitate wiring, wherein N is a positive integer ≥2, and m is a positive integer ≥1 and <N.

[0075] In order to avoid too many fifth routing segments d5 passing through the gap between the first touch electrode 21 and the second touch electrode 22 at the same position, thereby affecting the touch effect of the first touch electrode 21 and the second touch electrode 22, optionally, the fifth routing segments d5 in the mth column and the m+6th column are routed through the gaps between different first touch electrodes 21 and the second touch electrodes 22, that is, no more than 5 fifth routing segments d5 are set in the same gap to avoid mutual interference between the fifth routing segments d5, or affecting the touch effect of the first touch electrode 21 and the second touch electrode 22.

[0076] Optional, such as Figure 6 As shown, there are 6 rows of first touch electrodes 21 and 6 columns of second touch electrodes 22. The control chip IC is divided into a left end and a right end by a center line D. The 3 first touch lines 31 connected to the left end of the control chip IC are respectively connected to the 3 rows of first touch electrodes 21 far away from the control chip IC, the 3 second touch lines 32 connected to the left end of the control chip IC are respectively connected to the three columns of second touch electrodes 22 close to the left end of the control chip IC, the 3 first touch lines 31 connected to the right end of the control chip IC are respectively connected to the 3 rows of first touch electrodes 21 close to the control chip IC, and the 3 second touch lines 32 connected to the left end of the control chip IC are respectively connected to the three columns of second touch electrodes 22 close to the right end of the control chip IC, so as to balance the impedance of the first touch lines 31 and the second touch lines 32.

[0077] In order to ensure the touch effect of the display panel, it is avoided that the third wiring segment d3 is set in the display area AA to cause a greater impact on the touch. Figure 7 , Figure 7 yes Figure 4 A partial enlarged view of an embodiment at C; in some optional embodiments, along the second direction Y, the minimum distance a1 from the third routing segment d3 close to the non-display area NA to the third routing segment d3 away from the non-display area NA is less than or equal to the width of a second touch electrode 22 along the second direction Y.

[0078] It should be noted that since the third routing segment d3 is arranged in the display area AA, and there are at least two third routing segments d3, and there is a certain gap between two adjacent third routing segments d3, along the second direction Y, the minimum distance a1 from the third routing segment d3 close to the non-display area NA to the third routing segment d3 far away from the non-display area NA, that is, the width of the arrangement structure formed by each third routing segment d3 along the second direction Y. The space occupied by this part of the third routing segment d3 may be the setting space of the original second touch electrode 22, that is, the larger the minimum distance a1 from the third routing segment d3 close to the non-display area NA to the third routing segment d3 on the side away from the non-display area NA, the larger the size of the second touch electrode 22 that needs to be reduced. If the size is too large, it will affect the touchable area of ​​the display panel and the user experience. Therefore, in this embodiment, the minimum distance a1 from the third routing segment d3 close to the non-display area NA to the third routing segment d3 away from the non-display area NA can be limited to be less than or equal to the width of a second touch electrode 22 along the second direction Y to ensure that the display panel has a sufficient touch area.

[0079] Considering the size of the setting space of the display area AA and the required reduction of the border width of the display panel, optionally, along the second direction Y, the minimum distance a1 from the third routing segment d3 close to the non-display area NA to the third routing segment d3 far from the non-display area NA is less than or equal to 4 mm. For example, the minimum distance a1 from the third routing segment d3 close to the non-display area NA to the third routing segment d3 far from the non-display area NA may be equal to 4 mm.

[0080] Considering the process accuracy when the third wiring segment d3 and the second touch electrode 22 are formed, the minimum distance between the third wiring segment d3 and the second touch electrode 22 should not be too small. If it is too small, it may cause interference between the third wiring segment d3 and the second touch electrode 22. In order to avoid the above problem, Figure 6 As shown, in some optional embodiments, along the second direction Y, the minimum distance a2 between the third wiring segment d3 and the second touch electrode 22 is greater than or equal to 30 μm.

[0081] It should be noted that the minimum distance a2 between the third routing segment d3 and the second touch electrode 22 can be selected according to the process accuracy during molding. For example, when the third routing segment d3 and the second touch electrode 22 are molded by a vapor deposition process, the minimum distance a2 between the third routing segment d3 and the second touch electrode 22 along the second direction Y can be greater than or equal to 30 μm.

[0082] Optionally, the first touch line 31 and the second touch line 32 each close to the control chip IC end can adopt a single-layer routing, while the routing away from the control chip IC end can adopt a double-layer routing, that is, using upper and lower layers of parallel routing to reduce impedance. It can be understood that since the routing length of the routing away from the control chip IC end is relatively large, its impedance is also greater than the impedance of the first touch line 31 and the second touch line 32 each close to the control chip IC end. Therefore, the impedance of the routing away from the control chip IC end can also be reduced by double-layer routing to balance the impedance difference between the routing of the first touch line 31 and the second touch line 32 each close to the control chip IC end and the routing away from the control chip IC end.

[0083] See also Figure 8 , Figure 8 yes Figure 1 The film layer structure diagram of another embodiment is shown at BB in the middle; in some optional embodiments, along the direction perpendicular to the plane where the substrate 1 is located, the parts of the first touch wiring 31 and the second touch wiring 32 located in the non-display area NA include a first sub-touch portion Z1 and a second sub-touch portion Z2 arranged in different layers, and the first sub-touch portion Z1 and the second sub-touch portion Z2 are connected by vias.

[0084] In this embodiment, the first sub-touch portion Z1 and the second sub-touch portion Z2 are arranged in different layers and are connected through vias, that is, the first sub-touch portion Z1 and the second sub-touch portion Z2 can be understood as two parts of touch wiring connected in parallel. According to the principle of parallel resistors, the first sub-touch portion Z1 and the second sub-touch portion Z2 arranged in parallel can effectively reduce the total impedance and improve the accuracy of touch signal transmission. The parts of the first touch wiring 31 and the second touch wiring 32 located in the non-display area NA both include the first sub-touch portion Z1 and the second sub-touch portion Z2 to respectively reduce the total impedance of the first touch wiring 31 and the second touch wiring 32.

[0085] In order to avoid signal interference between the first touch wiring 31 and the second touch wiring 32 located in the display area AA and the components or signal wiring in the display area AA, such as the thin film transistor T, etc., refer to Fig. 9 , Fig. 9 yes Figure 1 The film layer structure diagram of another embodiment is shown at BB in the middle; in some optional embodiments, the display panel also includes a first shielding block P1, which is arranged between the portion of the first touch wiring 31 and the second touch wiring 32 located in the display area AA and the substrate 1, and the orthographic projection of the first shielding block P1 on the substrate 1 covers the orthographic projection of the portion of the first touch wiring 31 and the second touch wiring 32 located in the display area AA on the substrate 1.

[0086] It should be noted that the first shielding block P1 can be made of metal or other materials, as long as it can shield the signal generated by the first touch wiring 31 and / or the second touch wiring 32 to avoid signal interference between the first touch wiring 31 and / or the second touch wiring 32 and other wirings or components of the display panel. The orthographic projection of the first shielding block P1 on the substrate 1 covers the orthographic projection of the part of the first touch wiring 31 and the second touch wiring 32 located in the display area AA on the substrate 1, that is, the first shielding block P1 can block and shield the part of the first touch wiring 31 and the second touch wiring 32 located in the display area AA.

[0087] In order to avoid the display panel film thickness is too large, such as Fig. 9 As shown, optionally, the first shielding block P1 and the first sub-touch portion Z1 can be arranged on the same layer. In order to achieve the same layer arrangement of the first shielding block P1 and the first sub-touch portion Z1, the first shielding block P1 and the first sub-touch portion Z1 can be formed together through the same process, which can improve the molding efficiency and reduce the production cost. Specifically, the first shielding block P1 and the first sub-touch portion Z1 can be made of the same material.

[0088] In addition to using the first shielding block P1 to reduce signal interference, the existing film layer of the display panel can also be used to shield the first touch line 31 and the second touch line 32 located in the display area AA. Optionally, the display panel also includes a light-emitting device layer and a packaging layer at least arranged in the display area AA, and the light-emitting device layer 4 and the packaging layer 5 are stacked between the substrate 1 and the touch layer 2 in a direction perpendicular to the plane where the substrate 1 is located; the light-emitting device layer 4 includes a cathode layer 41, and the orthographic projection of the cathode layer on the substrate 1 and the orthographic projection of the second touch line 32 on the substrate 1 at least partially overlap.

[0089] It should be noted that the cathode layer 41 can be one of the metal materials such as silver (Ag), aluminum (Al), lithium (Li), magnesium (Mg), ytterbium (Yb), calcium (Ca) or indium (In), and can also be an alloy of the aforementioned metal materials, such as magnesium silver alloy (Mg / Ag) and lithium aluminum alloy (Li / Al), which is not limited in this embodiment. The cathode layer 41 can also have a certain shielding effect on the first touch wiring 31 and the second touch wiring 32. Optionally, the light-emitting device layer 4 also includes an anode layer 43 and a light-emitting layer 42 arranged in a stacked manner, and the cathode layer 41 covers the light-emitting layer 42.

[0090] In addition, since the encapsulation layer 5 is also arranged between the substrate 1 and the light-emitting device layer 4, and the encapsulation layer 5 may include a first inorganic layer 51, an organic layer 52 and a second inorganic layer 53 that are stacked, that is, a thin film encapsulation structure is adopted with a relatively large thickness, it can also produce a certain shielding effect on the first touch wiring 31 and the second touch wiring 32.

[0091] Optionally, the display panel further includes a pixel circuit electrically connected to the light-emitting device layer 4 , and the pixel circuit includes a plurality of thin film transistors T.

[0092] In order to reduce the impedance of the first touch wiring 31 and the second touch wiring 32 located in the display area AA, as shown in FIG. Figure 7 As shown, in some optional embodiments, the display panel also includes a third sub-touch portion Z3, the third sub-touch portion Z3 and the first sub-touch portion Z1 are arranged in the same layer, and the third sub-touch portion Z3 is electrically connected to the first touch wiring 31 and the second touch wiring 32 located in the display area AA through a via.

[0093] It can be understood that by setting the third sub-touch portion Z3, an additional resistor can be connected in parallel to the portion of the first touch wiring 31 and the second touch wiring 32 located in the display area AA, that is, the third sub-touch portion Z3 and the portion of the first touch wiring 31 and the second touch wiring 32 located in the display area AA are connected in parallel. Since at least one of the first touch wiring 31 and the second touch wiring 32 is set in the display area AA, the portion of the first touch wiring 31 and the second touch wiring 32 located in the display area AA can specifically be the portion of the first touch wiring 31 located in the display area AA and / or the portion of the second touch wiring 32 located in the display area AA.

[0094] The third sub-touch portion Z3 and the first sub-touch portion Z1 are arranged in the same layer, which can be specifically understood as the third sub-touch portion Z3 and the first sub-touch portion Z1 are made of the same material, or the third sub-touch portion Z3 and the first sub-touch portion Z1 can be formed by the same process, and the third sub-touch portion Z3 and the first sub-touch portion Z1 are made of the same material, so as to improve production efficiency and reduce production costs.

[0095] Since each first touch wiring 31 needs to be connected to the first touch electrodes 21 located in different rows along the second direction Y, the signal timing transmitted by each first touch wiring 31 has certain differences. Similarly, each second touch wiring 32 needs to be connected to the second touch electrodes 22 located in different columns along the first direction X. The signal timing transmitted by each second touch wiring 32 has certain differences. In order to avoid signal interference between the first touch wiring 31 and the second touch wiring 32 located in the display area AA and the first touch electrodes 21 and the second touch electrodes 22, please refer to Fig.10 and Fig.11 , Fig.10 yes Figure 1 The membrane structure diagram of another embodiment at BB in the middle, Fig.11 yes Figure 4A partial enlarged view of another embodiment at C in the middle; in some optional embodiments, in a direction parallel to the plane where the substrate 1 is located, a second shielding block P2 is arranged between the portion of the first touch wiring 31 and the second touch wiring 32 located in the display area AA and the adjacent first touch electrode 21 or the second touch electrode 22.

[0096] It can be understood that since the distance between the portion of the first touch wiring 31 and the second touch wiring 32 located in the display area AA and the first touch electrode 21 or the second touch electrode 22 is relatively close, that is, in the direction parallel to the plane where the substrate 1 is located, signal interference may occur between the portion of the first touch wiring 31 and the second touch wiring 32 located in the display area AA and the first touch electrode 21 or the second touch electrode 22, such as capacitive coupling and other problems. By setting the second shielding block P2 to shield the signals generated by the portion of the first touch wiring 31 and the second touch wiring 32 located in the display area AA or the first touch electrode 21 and the second touch electrode 22, the second shielding block P2 can specifically be made of metal or other conductive materials.

[0097] When only at least a portion of the first touch lines 31 are provided in the display area AA, the second shielding block P2 may be provided only between the first touch lines 31 located in the display area AA and the adjacent first touch electrodes 21, and / or, when only at least a portion of the second touch lines 32 are provided in the display area AA, the second shielding block P2 may be provided only between the second touch lines 32 located in the display area AA and the adjacent second touch electrodes 22.

[0098] In some optional embodiments, such as Fig.11 As shown, in order to ensure the shielding effect of the second shielding block P2, in the direction parallel to the plane where the substrate 1 is located, the width a3 of the second shielding block P2 is greater than or equal to the width of a single touch line in the first touch line 31 and the second touch line 32 located in the display area AA.

[0099] It is understandable that the larger the width a3 of the second shielding block P2 is, the better the shielding effect is. However, if the width a3 of the second shielding block P2 is too large, it will occupy more space and affect the layout of the display panel. Optionally, the width a3 of the second shielding block P2 can be equal to the width of a single line of the first touch line 31 and the second touch line 32 located in the display area AA, that is, the width a3 of the second shielding block P2 can be equal to the line width of the first touch line 31 or the second touch line 32. While ensuring the shielding effect, it can avoid affecting the layout of the display panel due to the large width a3 of the second shielding block P2.

[0100] See also Fig.12 , Fig.12 yes Figure 1The film layer structure diagram of another embodiment is shown at BB in the middle; in some optional embodiments, the touch layer 2 includes a bridge layer 23 and a touch electrode layer stacked in a direction perpendicular to the plane of the substrate 1, the first touch electrode 21 and the second touch electrode 22 are arranged in the touch electrode layer, and the first touch electrodes 21 adjacent to each other along the first direction X are electrically connected through the bridge portion of the bridge layer 23; the first sub-touch portion Z1 and the bridge portion are arranged in the same layer, and the second sub-touch portion Z2 and the touch electrode layer are arranged in the same layer.

[0101] It should be noted that, since the first touch electrode 21 and the second touch electrode 22 are arranged on the same layer and need to be insulated from each other, a bridge layer 23 is required to connect the first touch electrodes 21 adjacent to each other along the first direction X, the first sub-touch portion Z1 and the bridge portion are arranged on the same layer, and the second sub-touch portion Z2 and the touch electrode layer are arranged on the same layer. Specifically, the first sub-touch portion Z1 and the bridge portion can be formed by the same process, and the second sub-touch portion Z2 and the touch electrode layer can also be formed by the same process to reduce production costs.

[0102] Considering that the touch signal line 3 and the touch layer 2 are arranged on the same layer, there may be problems such as capacitive coupling, and the touch signal line 3 and the touch layer 2 can also be arranged on different layers. Fig.13 , Fig.13 yes Figure 1 The film layer structure diagram of another embodiment is shown at BB in the middle; optionally, the display panel further includes a first conductive layer D1 arranged between the bridge layer 23 and the substrate 1, and the touch signal line 3 and the first conductive layer D1 are arranged on the same layer.

[0103] It should be noted that the touch layer 2 includes a bridge layer 23 and a touch electrode layer stacked in a direction perpendicular to the plane of the substrate 1 , that is, the bridge layer 23 is arranged between the touch electrode layer where the first touch electrode 21 and the second touch electrode 22 are located and the substrate 1 .

[0104] In this embodiment, the first touch line 31 and the second touch line 32 in the touch signal line 3 are both arranged in the first conductive layer D1, and since the first conductive layer D1 is arranged between the bridge layer 23 and the substrate 1, the distance between it and the touch electrode layer is relatively large, which can effectively reduce the risk of capacitive coupling between the touch signal line 3 and the touch electrode layer. At the same time, the touch electrode is located on the side of the touch line close to the light emitting surface, which will not increase the distance from the touch electrode to the finger and will not affect the fingerprint recognition sensitivity.

[0105] In some optional embodiments, the portions of the first touch wiring 31 and the second touch wiring 32 located in the display area AA and the touch layer 2 are formed by the same process.

[0106] It should be noted that when the portion of the first touch wiring 31 and the second touch wiring 32 located in the display area AA and the touch layer 2 are formed by the same process, the portion of the first touch wiring 31 and the second touch wiring 32 located in the display area AA and the first touch electrode 21 or the second touch electrode 22 of the touch layer 2 can have the same structural shape, and the difference between the portion of the first touch wiring 31 and the second touch wiring 32 located in the display area AA and the first touch electrode 21 or the second touch electrode 22 is only the signal difference. It can be understood that part of the first touch electrode 21 or the second touch electrode 22 is replaced by the first touch wiring 31 and the second touch wiring 32, and the first touch wiring 31 and the second touch wiring 32 can occupy part of the space originally set with the first touch electrode 21 or the second touch electrode 22 in the display area AA.

[0107] Optionally, the first touch wiring 31 and the second touch wiring 32 located in the display area AA, the first touch electrode 21, and the second touch electrode 22 are all in a metal mesh structure. It can be understood that the first touch electrode 21 and the second touch electrode 22 are in a metal mesh structure, and the structure of the first touch wiring 31 and the second touch wiring 32 located in the display area AA is set to be the same as the first touch electrode 21 and the second touch electrode 22, that is, part of the first touch electrode 21 or the second touch electrode 22 is replaced by the first touch wiring 31 and the second touch wiring 32, while the first touch wiring 31 and the second touch wiring 32 located in the non-display area NA still adopt a normal single wiring structure.

[0108] See also Fig.14 An embodiment of the present invention further provides a display device 100, comprising: a display panel, where the display panel is the display panel in any of the above embodiments.

[0109] The display device provided by the embodiment of the present invention has the technical effect of the technical solution of the display panel in any of the above embodiments, and the explanation of the structures and terms that are the same as or corresponding to the above embodiments will not be repeated here.

[0110] The display device provided in the embodiment of the present invention can be applied to a mobile phone, or any electronic product with a display function, including but not limited to the following categories: televisions, laptops, desktop displays, tablet computers, digital cameras, smart bracelets, smart glasses, car displays, medical equipment, industrial control equipment, touch interactive terminals, etc. The embodiment of the present invention does not make any special limitations on this.

[0111] The above is only a specific implementation of the present invention. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process of the system, module and unit described above can refer to the location process in the aforementioned method embodiment, and will not be repeated here. It should be understood that the protection scope of the present invention is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be covered within the protection scope of the present invention.

[0112] It should also be noted that the exemplary embodiments mentioned in the present invention describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiments, or in a different order from the embodiments, or several steps can be performed simultaneously.

Claims

1. A display panel, characterized in that: The display panel has a display area and a non-display area arranged adjacent to each other, and comprises: substrate; a touch layer, located in the display area and disposed on one side of the substrate, the touch layer comprising a first touch electrode and a second touch electrode, the first touch electrode extending along a first direction and arranged along a second direction, the second touch electrode extending along the second direction and arranged along the first direction, the first direction and the second direction intersecting, and both the first direction and the second direction being parallel to the plane where the substrate is located; A touch signal line, the touch signal line comprising a first touch line and a second touch line, the first touch line is electrically connected to the first touch electrode, and the second touch line is electrically connected to the second touch electrode; wherein, At least one of the first touch wiring and the second touch wiring is located in the display area; At least part of the first touch routing is located in the display area, the first touch routing includes a first sub-touch routing and a second sub-touch routing, the first sub-touch routing is located in the display area, and the second sub-touch routing is located in the non-display area; The first sub-touch routing line includes a first routing line segment located in the display area and extending along the first direction, the second sub-touch routing line includes a second routing line segment located in the non-display area and extending along the first direction, the display panel further includes a light-emitting device layer, the light-emitting device layer includes a plurality of light-emitting units, the first routing line segment is located between two of the light-emitting units, and the first routing line segment is zigzag or wavy; At least part of the second touch routing is located in the display area, the second touch routing includes a third sub-touch routing and a fourth sub-touch routing, the third sub-touch routing is located in the display area, the fourth sub-touch routing is located in the non-display area, the third sub-touch routing includes a third routing segment located in the display area and extending along the first direction, and the fourth sub-touch routing includes a fourth routing segment located in the non-display area and extending along the first direction; Along the second direction, a minimum distance from the third routing segment close to the non-display area to the third routing segment far from the non-display area is less than or equal to a width of one second touch electrode along the second direction; In a direction parallel to the plane where the substrate is located, a second shielding block is provided between a portion of the first touch line and the second touch line located in the display area and an adjacent first touch electrode or the second touch electrode, and in a direction parallel to the plane where the substrate is located, a width of the second shielding block is greater than or equal to a width of a single touch line of the first touch line and the second touch line located in the display area; Along a direction perpendicular to the plane of the substrate, portions of the first touch wiring and the second touch wiring located in the non-display area include a first sub-touch portion and a second sub-touch portion arranged in different layers, and the first sub-touch portion and the second sub-touch portion are connected through a via.

2. The display panel according to claim 1, characterized in that: At least one of the light-emitting units is included between adjacent first wiring segments.

3. The display panel according to claim 1, characterized in that: The first touch control wiring includes a fifth wiring segment located in the display area, and each of the fifth wiring segments is disposed in a gap between the first touch control electrodes and the second touch control electrodes to connect the first touch control electrodes located in different rows along the second direction.

4. The display panel according to claim 1, characterized in that: In the non-display area, at least two third wiring segments arranged along the second direction are provided.

5. The display panel according to claim 1, characterized in that: Along the second direction, a minimum distance from the third routing segment close to the non-display area to the third routing segment far from the non-display area is less than or equal to 4 mm.

6. The display panel according to claim 1, characterized in that: Along the second direction, a minimum distance between the third wiring segment and the second touch electrode is greater than or equal to 30 μm.

7. The display panel according to claim 1, characterized in that: It also includes a first shielding block, which is arranged between the first touch line and the second touch line, the part located in the display area and the substrate, and the orthographic projection of the first shielding block on the substrate covers the orthographic projection of the first touch line and the second touch line, the part located in the display area on the substrate.

8. The display panel according to claim 7, characterized in that: The first shielding block and the first sub-touch portion are arranged in the same layer.

9. The display panel according to claim 1, characterized in that: It also includes a third sub-touch portion, which is arranged in the same layer as the first sub-touch portion, and is electrically connected to the first touch wiring and the second touch wiring in the display area through a via hole.

10. The display panel according to claim 1, characterized in that: The touch layer includes a bridge layer and a touch electrode layer stacked in a direction perpendicular to the plane where the substrate is located, the first touch electrode and the second touch electrode are arranged in the touch electrode layer, and the first touch electrodes adjacent to each other in a first direction are electrically connected through the bridge portion of the bridge layer; The first sub-touch portion and the bridge portion are arranged in the same layer, and the second sub-touch portion and the touch electrode layer are arranged in the same layer; or, It also includes a first conductive layer disposed between the bridge layer and the substrate, and the touch signal line and the first conductive layer are disposed in the same layer.

11. The display panel according to claim 1, characterized in that: The first touch control wiring and the second touch control wiring, the parts located in the display area and the touch control layer are formed by the same process.

12. The display panel according to claim 1, characterized in that: Parts of the first touch wiring and the second touch wiring located in the display area, the first touch electrode, and the second touch electrode are all in a metal grid structure.

13. A display device, characterized in that: include: A display panel, wherein the display panel is the display panel according to any one of claims 1 to 12.

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