A display panel and a display device

Abstract

The present application discloses a display panel and a display device, which include a display area and a fan-out area arranged in sequence along a first direction. The display area is provided with a plurality of pixel columns arranged in sequence along a second direction, and the fan-out area is provided with a plurality of leads arranged in sequence along the second direction. At least some of the pixel columns are further correspondingly provided with an auxiliary signal line. At least some of the leads are electrically connected to a transmission signal line corresponding to another pixel column through an auxiliary signal line corresponding to a pixel column and a connection signal line extending along the second direction in the display area, so as to implement the FIAA design. Moreover, the transmission signal lines corresponding to the pixel columns where the same-color sub-pixels are located are electrically connected to the same-layer leads in the fan-out area, thereby avoiding the brightness fluctuation of the same-color sub-pixels caused by the signal fluctuation on different-layer leads in the fan-out area, making the brightness fluctuation of the same-color sub-pixels smaller or non-existent, and improving the display uniformity.

Description

Technical Field

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

[0002] With the development of display technologies, the demand for realizing narrow-bezel or even borderless display panels has become increasingly urgent. Since there are many traces in the lower border of the display panel, occupying a large amount of space, currently, a method of designing some traces in the lower border of the display panel in the display area, that is, Fanout in AA (FIAA), has emerged, which can effectively reduce the lower border of the display panel. However, in the existing display panels designed with FIAA, there is a problem of brightness fluctuation in sub-pixels of the same color, which affects the display uniformity. Summary of the Invention

[0003] To solve the above technical problems, embodiments of the present application provide a display panel and a display device, so that while the display panel adopts the FIAA design, the brightness fluctuation of sub-pixels of the same color is small or there is no fluctuation, improving the display effect.

[0004] To achieve the above object, embodiments of the present application provide the following technical solutions:

[0005] A display panel includes a display area and a fan-out area arranged in sequence along a first direction;

[0006] The display area is provided with a plurality of pixel columns arranged in sequence along a second direction. The first direction and the second direction intersect. The sub-pixels in two pixel columns separated by one pixel column have the same color. Each pixel column is correspondingly provided with a transmission signal line and is electrically connected to the corresponding transmission signal line. At least some pixel columns are also correspondingly provided with an auxiliary signal line;

[0007] The fan-out area is provided with a plurality of leads arranged in sequence along the second direction. At least some leads are electrically connected to the transmission signal line corresponding to another pixel column through the auxiliary signal line corresponding to one pixel column and the connection signal line extending along the second direction in the display area;

[0008] Among them, the transmission signal lines corresponding to the pixel columns where the sub-pixels of the same color are located are electrically connected to the leads in the same layer in the fan-out area.

[0009] A display device includes the above display panel.

[0010] Compared with the prior art, the above technical solutions have the following advantages:

[0011] The display panel provided by the embodiment of the present application includes a display area and a fan-out area arranged in sequence along a first direction. The display area is provided with a plurality of pixel columns arranged in sequence along a second direction, and the fan-out area is provided with a plurality of leads arranged in sequence along the second direction. The leads are electrically connected to the transmission signal lines corresponding to the pixel columns one by one to provide data signals for the pixel columns. Among them, at least some of the pixel columns are also correspondingly provided with an auxiliary signal line, and at least some of the leads are electrically connected to the transmission signal lines corresponding to another pixel column through the auxiliary signal line corresponding to one pixel column and the connection signal line extending along the second direction in the display area, so as to achieve the FIAA design. Moreover, the transmission signal lines corresponding to the pixel columns where the same-color sub-pixels are located are electrically connected to the same-layer leads in the fan-out area, so as to avoid the brightness fluctuation of the same-color sub-pixels caused by the signal fluctuation on different-layer leads in the fan-out area, making the brightness fluctuation of the sub-pixels of the same color smaller or non-existent, and improving the display uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0013] Figure 1 A plan view of the display panel provided by the embodiment of the present application;

[0014] Figure 2 A partial enlarged view of the display panel provided by the embodiment of the present application;

[0015] Figure 3 A cross-sectional structure view of the display panel provided by the embodiment of the present application;

[0016] Figure 4 Another partial enlarged view of the display panel provided by the embodiment of the present application;

[0017] Figure 5 A partial enlarged view of an existing display panel;

[0018] Figure 6 Another partial enlarged view of the display panel provided by the embodiment of the present application;

[0019] Figure 7 Another partial enlarged view of the display panel provided by the embodiment of the present application;

[0020] Figure 8 Another plan view of the display panel provided by the embodiment of the present application;

[0021] Figure 9 Another partial enlarged schematic diagram of the display panel provided by the embodiment of the present application;

[0022] Figure 10 Schematic structural diagram of the display device provided by the embodiment of the present application. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0024] In the following description, many specific details are set forth in order to fully understand the present application. However, the present application may be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0025] Secondly, the present application will be described in detail with reference to the schematic diagrams. When describing the embodiments of the present application in detail, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally out of the general proportion, and the schematic diagrams are only examples and should not limit the protection scope of the present application herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0026] As described in the background art section, in the existing display panel using the FIAA design, there is a problem of brightness fluctuation in sub-pixels of the same color, which affects the display uniformity.

[0027] In view of this, the embodiment of the present application provides a display panel. Figure 1 Shows a schematic plan view of the display panel provided by the embodiment of the present application, as Figure 1 shown, the display panel includes a display area AA and a fan-out area FA arranged in sequence along the first direction Y.

[0028] Continuing as Figure 1 shown, the display area AA is provided with a plurality of pixel columns 10 arranged in sequence along the second direction X. The first direction Y and the second direction X intersect. Sub-pixels in two pixel columns 10 separated by one pixel column 10 have the same color, that is, the plurality of pixel columns 10 include a first pixel column 11 and a second pixel column 12 arranged alternately along the second direction X. Sub-pixels in the first pixel column 11 and sub-pixels in the second pixel column 12 have different colors.

[0029] Figure 2A partial enlarged schematic diagram of a display panel provided in an embodiment of the present application, corresponding to Figure 1 The dotted rectangular frame part, such as Figure 2 As shown, each pixel column 10 is provided with a corresponding transmission signal line 20 and is electrically connected to the corresponding transmission signal line 20 , and at least part of the pixel columns 10 are also provided with an auxiliary signal line 30 .

[0030] Continue as Figure 2 As shown, the fan-out area FA is provided with a plurality of leads 40 arranged in sequence along the second direction X, and at least part of the leads 40 are electrically connected to the transmission signal line 20 corresponding to another pixel column 10 through the auxiliary signal line 30 corresponding to one pixel column 10 and the connection signal line 50 extending along the second direction X in the display area.

[0031] The transmission signal lines 20 corresponding to the pixel columns 10 where the sub-pixels of the same color are located are electrically connected to the same layer of leads 40 in the fan-out area FA.

[0032] like Figure 1 As shown, the display panel further includes a pin area PA located on the side of the fan-out area FA away from the display area AA in the first direction Y, and the pin area PA is provided with a plurality of pins (pads), including data pins and power pins, etc. Figure 1 After the display panel is manufactured, the driver integrated circuit (IC) is connected to the data pins, power pins and other pins in the pin area PA by bonding.

[0033] Combination Figure 1 and Figure 2 As shown, the display area AA is provided with a plurality of pixel columns 10 sequentially arranged along the second direction X, each pixel column 10 is electrically connected to a corresponding transmission signal line 20, and the fan-out area FA is provided with a plurality of lead lines 40 sequentially arranged along the second direction X, each lead line 40 extends from the pin area PA to the display area AA, and is electrically connected to the transmission signal line 20 corresponding to a pixel column 10 in the display area AA, so that the data signal output by the driver integrated circuit IC is transmitted to the pixel column 10 via the data pin in the pin area PA, a lead line 40 in the fan-out area FA and a transmission signal line 20 in the display area AA, thereby driving a plurality of sub-pixels in the pixel column 10 to emit light.

[0034] In a display panel that does not adopt the FIAA design, the lead 40 in the fan-out area FA is directly electrically connected to the transmission signal line 20 corresponding to each pixel column 10, while in the display panel provided in the embodiment of the present application, Figure 2As shown, at least a part of pixel columns 10 are also correspondingly provided with an auxiliary signal line 30, and at least a part of leads 40 are electrically connected to a transmission signal line 20 corresponding to another pixel column through the auxiliary signal line 30 corresponding to a pixel column 10 and a connection signal line 50 extending along the second direction X in the display area, thereby implementing the FIAA design and effectively reducing the lower border of the display panel.

[0035] Figure 3 Fig. shows a cross-sectional schematic diagram of a display panel provided by an embodiment of the present application. As Figure 3 shown, the display panel further includes:

[0036] a substrate substrate sub;

[0037] a first metal layer M3 and a second metal layer M2 which are arranged in different layers on one side of the substrate substrate sub;

[0038] The transmission signal line 20 and the auxiliary signal line 30 are both located on the first metal layer M3, and the connection signal line 50 is located on the second metal layer M2.

[0039] As Figure 3 shown, the first metal layer M3 and the second metal layer M2 are spaced apart by an insulating layer, and the connection signal line 50 is electrically connected to the transmission signal line 20 and the auxiliary signal line 30 through vias between the first metal layer M3 and the second metal layer M2.

[0040] As Figure 3 shown, a thin film transistor Tx and Ty, a capacitor Cst, a light emitting element D, etc. are further provided on the substrate substrate sub. Among them, Tx is a low temperature polycrystalline oxide (LTPO) thin film transistor, and Tx includes an active layer b1, a gate g, a source s1, and a drain d1. Ty is an indium gallium zinc oxide (IGZO) thin film transistor, and Ty includes an active layer b2, a double gate (including a top gate MD and a bottom gate MC), a source s2, and a drain d2. The capacitor Cst includes a first electrode plate M1 and a second electrode plate MC. The light emitting element D includes an anode RE, an organic light emitting layer OM, and a cathode SE. Figure 3 The organic light emitting layer OM and the cathode SE are not shown in the figure. In fact, multiple thin film transistors such as Tx and Ty form a pixel driving circuit, receive data signals on the transmission signal line 20, and thereby drive the light emitting element D to emit light. A pixel driving circuit and a light emitting element are correspondingly electrically connected to form a sub-pixel.

[0041] The inventors found through research that with reference to Figure 2As shown, to achieve the FIAA connection, at least some of the leads 40 in the fan-out region FA are electrically connected to the transmission signal lines 20 corresponding to another pixel column 10 through the auxiliary signal lines 30 corresponding to one pixel column 10 and the connection signal lines 50 extending along the second direction X in the display region AA. In fact, the extended portions of some of the leads 40 in the fan-out region FA in the second direction X are replaced by the connection signal lines 50 extending along the second direction X in the display region AA, and at the same time, the extended portions of these leads 40 in the first direction Y in the fan-out region FA are transferred to the central region of the fan-out region FA, that is, the lead layout density in the central region of the fan-out region FA is increased.

[0042] To be able to place all the leads 40 in the central region of the fan-out region FA, usually a part of the leads 40 in the fan-out region FA and another part of the leads 40 are arranged in different layers. Optionally, in an embodiment of the present application, as Figure 4 shown, Figure 4 is another partial enlarged schematic diagram of the display panel provided by the embodiment of the present application, corresponding to Figure 1 the rectangular dotted line box part. It can be seen that in the fan-out region FA, two leads 40 separated by one lead 40 are located in the same metal layer, and adjacent two leads 40 are located in different metal layers. That is, the multiple leads 40 in the fan-out region FA include a first lead 41 and a second lead 42, the first lead 41 and the second lead 42 are located in different metal layers, and the first lead 41 and the second lead 42 are alternately arranged along the second direction X, so that the distance between adjacent two leads 40 can be smaller to be able to place all the leads 40 in the central region of the fan-out region FA. For example, the first lead 41 is located in Figure 3 the M1 metal layer shown, and the second lead 42 is located in Figure 3 the MC metal layer shown, then the multiple leads 40 in the fan-out region FA are alternately arranged as M1 / MC / M1 / MC along the second direction X.

[0043] As Figure 1 shown, the display region AA includes a first display region AA1 and a second display region AA2 symmetrically arranged along the first direction Y. Again, as Figure 4As shown, in the direction from the first display area AA1 to the second display area AA2, the first display area AA1 is provided with the first to the Nth pixel columns. Among them, any one of the first to the Fth pixel columns corresponds to a transmission signal line 20 that is electrically connected to an auxiliary signal line 30 corresponding to another pixel column among the Qth to the Q+Fth pixel columns through a connection signal line 50. And the transmission signal lines 20 and the auxiliary signal lines 30 corresponding to the Qth to the Q+Fth pixel columns are sequentially electrically connected to the leads 40 in the fan-out area FA. The transmission signal line 20 corresponding to the Q+F+1th pixel column is directly electrically connected to the lead 40 in the fan-out area FA, thereby realizing the FIAA connection for the first to the Fth pixel columns. At this time, for any one of the Qth to the Q+Fth pixel columns, if the transmission signal line 20 corresponding to this pixel column is electrically connected to the first lead 41 in the fan-out area FA, then the auxiliary signal line 30 corresponding to this pixel column is electrically connected to the adjacent second lead 42 in the fan-out area FA, and vice versa.

[0044] On this basis, the inventor further studies and discovers that in the existing display panel, as Figure 5 shown, Figure 5 is a partial enlarged schematic diagram of the existing display panel. Corresponding to Figure 1 the rectangular dashed box part, it can be seen that for two adjacent pixel columns that are simultaneously provided with a transmission signal line 20 and an auxiliary signal line 30, the transmission signal line 20 and the auxiliary signal line 30 are alternately arranged in sequence along the second direction X. Specifically, as shown in the Qth pixel column and the Q+1th pixel column in Figure 5 , the auxiliary signal line 30 and the transmission signal line 20 corresponding to the Qth pixel column are arranged in sequence along the second direction X, and the auxiliary signal line 30 and the transmission signal line 20 corresponding to the Q+1th pixel column are also arranged in sequence along the second direction X. And the arrangement order of the auxiliary signal lines 30 and the transmission signal lines corresponding to these two pixel columns along the second direction X is the same. At this time, if in the fan-out area FA, the first lead 41 and the second lead 42 arranged in different layers are alternately arranged along the second direction X, it will inevitably cause the transmission signal lines 20 corresponding to the pixel columns where the same-color sub-pixels are located to be electrically connected to the leads 40 in different layers in the fan-out area FA.

[0045] Still taking such as Figure 5Taking the Qth pixel column and the (Q + 1)th pixel column in [[]] as an example for illustration, the auxiliary signal line 30 corresponding to the Qth pixel column is electrically connected to the first lead 41 in the fan-out region FA, and the transmission signal line 20 corresponding to the Qth pixel column is electrically connected to the second lead 42 in the fan-out region FA. If the auxiliary signal line 30 corresponding to the Qth pixel column is electrically connected to the transmission signal line 20 corresponding to the pixel column with the same color as the Qth pixel column through the connection signal line 50, then the Qth pixel column and the pixel column electrically connected to the auxiliary signal line 30 corresponding to the Qth pixel column are respectively electrically connected to the first lead 41 and the second lead 42 in the fan-out region FA, so that the transmission signal lines 20 of these two pixel columns with the same color are respectively electrically connected to the leads 40 in different layers in the fan-out region FA; if the auxiliary signal line 30 corresponding to the Qth pixel column is electrically connected to the transmission signal line 20 corresponding to the pixel column with a different color from the Qth pixel column through the connection signal line 50, since the (Q + 1)th pixel column has a different color from the Qth pixel column, therefore, that is, the auxiliary signal line 30 corresponding to the Qth pixel column is electrically connected to the transmission signal line 20 corresponding to the pixel column with the same color as the (Q + 1)th pixel column through the connection signal line 50, but the transmission signal line 20 of the (Q + 1)th pixel column is electrically connected to the second lead 42 in the fan-out region FA, then the (Q + 1)th pixel column and the pixel column electrically connected to the auxiliary signal line 30 corresponding to the Qth pixel column are respectively electrically connected to the second lead 42 and the first lead 41 in the fan-out region FA, so that the transmission signal lines 20 of these two pixel columns with the same color are respectively electrically connected to the leads 40 in different layers in the fan-out region FA.

[0046] It can be seen from this that in the existing display panel, for two adjacent pixel columns that are simultaneously provided with the transmission signal line 20 and the auxiliary signal line 30, the transmission signal line 20 and the auxiliary signal line 30 are arranged alternately in sequence along the second direction X, and in the fan-out region FA, the first lead 41 and the second lead 42 arranged in different layers are arranged alternately along the second direction X, which will inevitably cause the transmission signal line 20 corresponding to the pixel column where the sub-pixels of the same color are located to be electrically connected to the leads 40 in different layers in the fan-out region FA. And the signal fluctuations of the leads 40 in different layers are different due to the line width, resulting in the problem of brightness fluctuations of the sub-pixels of the same color and affecting the display uniformity.

[0047] Based on this, in the display panel provided in the embodiment of the present application, the transmission signal line 20 corresponding to the pixel column 10 where the sub-pixels of the same color are located is electrically connected to the lead 40 in the same layer in the fan-out region FA, so as to avoid the brightness fluctuations of the sub-pixels of the same color caused by the signal fluctuations on the leads 40 in different layers in the fan-out region FA, and make the brightness fluctuations of the sub-pixels of the same color smaller or without fluctuations, improving the display uniformity.

[0048] It should be noted that in the embodiment of the present application, at least some of the pixel columns 10 are correspondingly provided with an auxiliary signal line 30. For example,Figure 4 As shown, in the first display area AA1, the auxiliary signal lines 30 can be correspondingly arranged only for the Qth to the (Q + F)th pixel columns, while the auxiliary signal lines 30 are not used for the 1st to the Fth pixel columns and the (Q + F + 1)th to the Nth pixel columns. Therefore, for the 1st to the Fth pixel columns and the (Q + F + 1)th to the Nth pixel columns, only the transmission signal lines 20 can be arranged, and there is no need to arrange the auxiliary signal lines 30. Among them, since the transmission signal lines 20 of the 1st to the Fth pixel columns need to be electrically connected to the lead 40 of the fan-out area FA through the auxiliary signal lines 30 of the Qth to the (Q + F)th pixel columns, the area where the 1st to the Fth pixel columns are located is the FIAA area. Since the transmission signal lines 20 of the (Q + F + 1)th to the Nth pixel columns are directly electrically connected to the lead 40 of the fan-out area FA, the area where the (Q + F + 1)th to the Nth pixel columns are located is the non-FIAA area (NFIAA area). However, considering the etching uniformity and reflection effect, for each pixel column 10 in the display area AA, in addition to correspondingly arranging a transmission signal line 20, an auxiliary signal line 30 is also correspondingly arranged, so that the wiring density of the signal lines in the entire display area AA is uniform.

[0049] Taking the example that each pixel column 10 in the display area AA correspondingly arranges a transmission signal line 20 and an auxiliary signal line 30, the implementation manner of electrically connecting the transmission signal lines 20 corresponding to the pixel columns 10 where the same-color sub-pixels are located to the same-layer lead 40 in the fan-out area FA in this application will be specifically described below.

[0050] In a first aspect, starting from the perspective of the layout of the leads 40 in the fan-out area FA, the transmission signal lines 20 corresponding to the pixel columns 10 where the same-color sub-pixels are located are electrically connected to the same-layer lead 40 in the fan-out area FA.

[0051] Based on this, optionally, in an embodiment of this application, as Figure 2 shown, for two adjacent pixel columns that are correspondingly provided with both transmission signal lines 20 and auxiliary signal lines 30, the transmission signal lines 20 and the auxiliary signal lines 30 are alternately arranged in sequence along the second direction X, and the arrangement order of the transmission signal lines 20 and the auxiliary signal lines 30 corresponding to two adjacent pixel columns along the second direction X is the same;

[0052] In this embodiment, as Figure 1 shown, the display area AA includes a first display area AA1 and a second display area AA2 that are symmetrically arranged along the first direction Y. As Figure 2As shown, in the direction from the first display area AA1 to the second display area AA2, the first display area AA1 is provided with the first to the Nth pixel columns. Among them, any one of the first to the Fth pixel columns corresponding to the transmission signal line 20 is electrically connected to the auxiliary signal line 30 corresponding to another pixel column among the Qth to the Q+Fth pixel columns through the connection signal line 50, and the transmission signal lines 20 and the auxiliary signal lines 30 corresponding to the Qth to the Q+Fth pixel columns are sequentially electrically connected to the lead 40;

[0053] In this embodiment, as Figure 2 shown, the multiple pixel columns 10 in the display area AA include a first pixel column 11 and a second pixel column 12 arranged alternately along the second direction Y.

[0054] In this embodiment, if the transmission signal line 20 corresponding to the first pixel column 11 among the first to the Fth pixel columns is electrically connected to the auxiliary signal line 30 of the second pixel column 12 among the Qth to the Q+Fth pixel columns through the connection signal line 50, and the transmission signal line 20 corresponding to the second pixel column 12 among the first to the Fth pixel columns is electrically connected to the auxiliary signal line of the first pixel column 11 among the Qth to the Q+Fth pixel columns through the connection signal line 50, that is, for any pixel column among the Qth to the Q+Fth pixel columns, the auxiliary signal line 30 corresponding to this pixel column is electrically connected to the transmission signal line 20 of the pixel column with a different color from this pixel column among the first to the Fth pixel columns. Then, in order for the transmission signal lines 20 corresponding to the pixel columns 10 where the same-color sub-pixels are located to be electrically connected to the same layer of lead 40 in the fan-out area FA, for any pixel column among the Qth to the Q+Fth pixel columns, the lead 40 connected to the auxiliary signal line 30 of this pixel column and the lead 40 connected to the transmission signal line 20 of the pixel column adjacent to this pixel column need to be located in the same metal layer.

[0055] Specifically, as Figure 2 shown, the leads 40 sequentially connected by the transmission signal lines 20 and the auxiliary signal lines 30 corresponding to the Qth to the Q+Fth pixel columns are arranged in the order of the first lead 41, the second lead 42, the second lead 42, and the first lead 41. Assuming that the first lead 41 is located in Figure 3 the M1 metal layer shown, and the second lead 42 is located in Figure 3 the MC metal layer shown, then the leads 40 sequentially connected by the transmission signal lines 20 and the auxiliary signal lines 30 corresponding to the Qth to the Q+Fth pixel columns are arranged in the order of M1 / MC / MC / M1.

[0056] In this embodiment, if the transmission signal lines 20 corresponding to the first pixel column 11 in the first to Fth pixel columns are electrically connected to the auxiliary signal lines 30 of the first pixel column 11 in the Qth to Q+Fth pixel columns through the connection signal lines 50, and the transmission signal lines 20 corresponding to the second pixel column 12 in the first to Fth pixel columns are electrically connected to the auxiliary signal lines 30 of the second pixel column 12 in the Qth to Q+Fth pixel columns through the connection signal lines 50, that is, for any pixel column in the Qth to Q+Fth pixel columns, the auxiliary signal line 30 corresponding to this pixel column is electrically connected to the transmission signal line 20 of the pixel column with the same color as this pixel column in the first to Fth pixel columns. Then, in order for the transmission signal lines 20 corresponding to the pixel columns 10 where the same-color sub-pixels are located to be electrically connected to the same layer of leads 40 in the fan-out region FA, for any pixel column in the Qth to Q+Fth pixel columns, both the transmission signal line 20 and the auxiliary signal line 30 of this pixel column need to be electrically connected to the same layer of leads 40 in the fan-out region FA.

[0057] Specifically, for example, the leads 40 to which the transmission signal lines 20 and the auxiliary signal lines 30 corresponding to the Qth to Q+Fth pixel columns are sequentially connected are arranged in the order of the first lead 41, the first lead 41, the second lead 42, and the second lead 42. Suppose the first lead 41 is located Figure 3 in the M1 metal layer as shown, and the second lead 42 is located Figure 3 in the MC metal layer as shown, then the leads 40 to which the transmission signal lines 20 and the auxiliary signal lines 30 corresponding to the Qth to Q+Fth pixel columns are sequentially connected are arranged in the order of M1 / M1 / MC / MC / M1 / M1 in sequence.

[0058] It should be noted that as Figure 2 shown, if in the direction from the first display area AA1 to the second display area AA2, the first signal line corresponding to the first pixel column in the first display area AA1 is the auxiliary signal line 30, then the first signal line corresponding to the Q+F+1th pixel column is also the auxiliary signal line 30. At this time, the auxiliary signal line 30 corresponding to the Q+F+1th pixel column needs to be electrically connected to another lead 40 in the fan-out region FA, so that on the basis that the leads 40 in the fan-out region FA are arranged in the order of M1 / M1 / MC / MC / M1 / M1, the transmission signal line corresponding to the Q+F+1th pixel column and the auxiliary signal line corresponding to the Q+Fth pixel column are electrically connected to the same layer of leads in the fan-out region FA.

[0059] In this embodiment, F = 2x, where x is an integer greater than or equal to 1, so that the transmission signal line 20 corresponding to any one of the first to Fth pixel columns can be electrically connected to the auxiliary signal line 30 corresponding to another pixel column in the Qth to Q+Fth pixel columns through the connection signal line 50.

[0060] Refer toFigure 2 As shown in the figure, both of the above two methods will change the layout of the first lead 41 and the second lead 42 in the fan-out region FA, so that the first lead 41 and the second lead 42 are not arranged in an alternating manner along the second direction X, but there will inevitably be a situation where two first leads 41 are arranged adjacent to each other or two second leads 42 are arranged adjacent to each other. In this way, the requirement for the distance between two adjacent leads 40 is relatively high.

[0061] Therefore, it is more preferable to change the layout of the transmission signal lines 20 and the auxiliary signal lines 30 corresponding to each pixel column 10 in the display region AA and the connection manner of the FIAA on the basis of maintaining the alternating arrangement of the first lead and the second lead 42 in the fan-out region FA along the second direction X, so that the transmission signal lines 20 corresponding to the pixel columns 10 where the same-color sub-pixels are located are electrically connected to the same-layer leads 40 in the fan-out region FA.

[0062] In a second aspect, starting from the layout of the transmission signal lines 20 and the auxiliary signal lines 30 corresponding to each pixel column in the display region AA and the connection manner of the FIAA, the transmission signal lines 20 corresponding to the pixel columns 10 where the same-color sub-pixels are located are electrically connected to the same-layer leads 40 in the fan-out region FA.

[0063] Optionally, in an embodiment of the present application, as Figure 4 shown, for two adjacent pixel columns that are simultaneously provided with transmission signal lines 20 and auxiliary signal lines 30, the transmission signal lines 20 and the auxiliary signal lines 30 are mirror-arranged along the first direction Y, that is, the transmission signal lines 20 corresponding to two adjacent pixel columns are arranged adjacent to each other, or the auxiliary signal lines 30 corresponding to two adjacent pixel columns are arranged adjacent to each other. At this time, since the sub-pixels in two adjacent pixel columns have different colors, and the transmission signal lines 20 and the auxiliary signal lines 30 corresponding to two adjacent pixel columns are mirror-arranged along the first direction Y, as long as the auxiliary signal line 30 corresponding to any pixel column in the Qth to (Q + F)th pixel columns is electrically connected to the transmission signal line 20 corresponding to the pixel column with a different color from this pixel column in the 1st to Fth pixel columns through the connection signal line 50, it can be ensured that the transmission signal lines 20 corresponding to the pixel columns 10 where the same-color sub-pixels are located are electrically connected to the same-layer leads 40 in the fan-out region FA.

[0064] Specifically, in an embodiment of the present application, as Figure 1 shown, the display region AA includes a first display region AA1 and a second display region AA2 that are symmetrically arranged along the first direction Y;

[0065] As Figure 4As shown, in the direction from the first display area AA1 to the second display area AA2, the first display area AA1 is provided with the 1st to the Nth pixel columns. Among them, any one of the 1st to the Fth pixel columns corresponding transmission signal line 20 is electrically connected to the auxiliary signal line 30 corresponding to another pixel column among the Qth to the Q+Fth pixel columns through the connection signal line 50, and the transmission signal line 20 and the auxiliary signal line 30 corresponding to the Qth to the Q+Fth pixel columns are sequentially electrically connected to the lead 40;

[0066] The plurality of pixel columns 10 include a first pixel column 11 and a second pixel column 12 arranged alternately along the second direction X. The transmission signal line 20 corresponding to the first pixel column 11 among the 1st to the Fth pixel columns is electrically connected to the auxiliary signal line 30 of the second pixel column 12 among the Qth to the Q+Fth pixel columns through the connection signal line 50, and the transmission signal line 20 corresponding to the second pixel column 12 among the 1st to the Fth pixel columns is electrically connected to the auxiliary signal line 30 of the first pixel column 11 among the Qth to the Q+Fth pixel columns through the connection signal line 50;

[0067] Among them, F = 2x, x is an integer greater than or equal to 1, and Q+F < N.

[0068] In this embodiment, taking the Qth pixel column and the Q+1th pixel column as an example, and the Qth pixel column is the first pixel column 11, and the Q+1th pixel column is the second pixel column 12 for illustration, refer to Figure 4As shown, the transmission signal lines 20 and the auxiliary signal lines 30 of the Q-th pixel column and those of the Q+1-th pixel column are arranged in a mirror image along the first direction Y. Also, the first lead 41 and the second lead 42 in the fan-out region FA are arranged alternately along the second direction X. Then, the auxiliary signal line 30 corresponding to the Q-th pixel column is electrically connected to the transmission signal line 20 corresponding to a second pixel column 12 among the first to F-th pixel columns, and the auxiliary signal line 30 corresponding to the Q-th pixel column is electrically connected to the first lead 41 in the fan-out region FA. That is, the transmission signal line 20 corresponding to a second pixel column 12 among the first to F-th pixel columns is electrically connected to the first lead 41 in the fan-out region FA. The transmission signal line 20 corresponding to the Q-th pixel column (the first pixel column 11) is directly electrically connected to the second lead 42 in the fan-out region FA. At the same time, the transmission signal line 20 corresponding to the Q+1-th pixel column (the second pixel column 12) is directly electrically connected to the first lead 41. The auxiliary signal line 30 corresponding to the Q+1-th pixel column is electrically connected to the transmission signal line 30 corresponding to a first pixel column 11 among the first to F-th pixel columns, and the auxiliary signal line 30 corresponding to the Q+1-th pixel column is electrically connected to the second lead 42 in the fan-out region FA. That is, the transmission signal line 30 corresponding to a first pixel column 11 among the first to F-th pixel columns is electrically connected to the second lead 42 in the fan-out region FA. Thus, the transmission signal lines 20 corresponding to the first pixel columns 11 in the display region AA are all electrically connected to the second lead 42 in the fan-out region FA, and the transmission signal lines 20 corresponding to the second pixel columns 12 are all electrically connected to the first lead 41 in the fan-out region FA.

[0069] Moreover, the sub-pixel colors of adjacent pixel columns among the Q+F+1-th to N-th pixel columns are different, and the transmission signal lines 20 corresponding to adjacent pixel columns are directly electrically connected to the first lead 41 and the second lead 42 which are arranged in different layers in the fan-out region FA.

[0070] It can be seen that as long as the transmission signal lines 20 corresponding to the first pixel columns 11 among the first to F-th pixel columns are electrically connected to the auxiliary signal lines 30 corresponding to the second pixel columns 12 among the Q-th to Q+F-th pixel columns through the connection signal lines 50, and the transmission signal lines 20 corresponding to the second pixel columns 12 among the first to F-th pixel columns are electrically connected to the auxiliary signal lines 30 corresponding to the first pixel columns 11 among the Q-th to Q+F-th pixel columns through the connection signal lines 50, on the basis of maintaining the alternate arrangement of the first lead 41 and the second lead 42 along the second direction X in the fan-out region FA, the transmission signal lines 20 corresponding to the pixel columns 10 where the sub-pixels of the same color are located can be electrically connected to the same-layer lead 40 in the fan-out region FA.

[0071] It should be noted that in this embodiment, Q can be equal to F, F+1, F+2... F+P+1, etc. The present application does not limit this.Figure 4 Only one case where Q > F is shown, which depends on the specific situation.

[0072] Based on the above embodiments, the corresponding connection manner between the transmission signal lines 20 of the first to Fth pixel columns and the auxiliary signal lines 30 of the Qth to Q + Fth pixel columns in the display area AA, and the corresponding connection manner between the transmission signal lines 20 and the auxiliary signal lines 30 of the Qth to Nth pixel columns in the display area AA and the leads 40 in the fan-out area FA will be described.

[0073] Optionally, in an embodiment of the present application, as Figure 1 shown, the display area AA includes a first display area AA1 and a second display area AA2 symmetrically arranged along the first direction Y;

[0074] As Figure 6 shown, Figure 6 is another partial enlarged schematic diagram of the display panel provided by the embodiment of the present application. Corresponding to Figure 1 the rectangular dotted box part, it can be seen that in the direction from the first display area AA1 to the second display area AA2, the first display area AA1 is provided with the first to Nth pixel columns. Among them, any one of the first to Fth pixel columns corresponding transmission signal lines 20 is electrically connected to the auxiliary signal lines 30 corresponding to another pixel column among the F + P + 1th to 2F + Pth pixel columns through the connection signal line 50;

[0075] As Figure 6 shown, in the direction from the first display area AA1 to the second display area AA2, the fan-out area FA is at least provided with the first to 2F + Pth leads 40. Among them, the (P + 1)th to (2F + P)th leads 40 are sequentially electrically connected to the transmission signal lines 20 and the auxiliary signal lines 30 corresponding to the F + P + 1th to 2F + Pth pixel columns;

[0076] Among them, 2F + P < N, and F = 2x, where x is an integer greater than or equal to 1.

[0077] In this embodiment, Q = F + P + 1, that is, between the Fth pixel column and the Qth pixel column, there can be P pixel columns. Optionally, P = 2y, where y is an integer greater than or equal to 0, that is, the Fth pixel column and the Qth pixel column can be directly adjacent, or there are an even number of pixel columns between the Fth pixel column and the Qth pixel column. In this way, the arrangement of the transmission signal lines 20 and the auxiliary signal lines 30 of the first to Fth pixel columns is exactly the same as the arrangement of the transmission signal lines 20 and the auxiliary signal lines 30 among the F + P + 1th to 2F + Pth pixel columns, so as to facilitate the setting of the corresponding connection relationship between the transmission signal lines 20 of the first to Fth pixel columns and the auxiliary signal lines 30 of the Qth to Q + Fth pixel columns.

[0078] In this embodiment, the transmission signal lines 20 corresponding to the first pixel column 11 in the first to Fth pixel columns are electrically connected to the auxiliary signal lines 30 corresponding to the second pixel column 12 in the (F + P + 1)th to (2F + P)th pixel columns through the connection signal lines 50. The transmission signal lines 20 corresponding to the second pixel column 12 in the first to Fth pixel columns are electrically connected to the auxiliary signal lines 30 corresponding to the first pixel column 11 in the (F + P + 1)th to (2F + P)th pixel columns through the connection signal lines 50. Moreover, the transmission signal lines 20 and the auxiliary signal lines 30 corresponding to the (F + P + 1)th to (2F + P)th pixel columns are sequentially electrically connected to the (P + 1)th to (2F + P)th leads 40 in the fan-out region FA in sequence. Thus, on the basis of maintaining the alternate arrangement of the first lead 41 and the second lead 42 in the second direction X in the fan-out region FA, the transmission signal lines 20 corresponding to the pixel columns 10 where the same-color sub-pixels are located are electrically connected to the same-layer leads 40 in the fan-out region FA.

[0079] On this basis, optionally, in an embodiment of the present application, as Figure 6 shown, in the direction from the first display area AA1 to the second display area AA2, the first signal line corresponding to the first pixel column in the first display area AA1 is the auxiliary signal line 30;

[0080] In the direction from the first display area AA1 to the second display area AA2, the fan-out region FA is further provided with the (2F + P + 1)th to the (N + 1)th leads 40. Among them, the (2F + P + 1)th to the (2F + P + 2)th leads 40 are sequentially electrically connected to the transmission signal lines 20 and the auxiliary signal lines 30 corresponding to the (2F + P + 1)th pixel column, and the (2F + P + 3)th to the (N + 1)th leads 40 are sequentially electrically connected to the transmission signal lines 20 corresponding to the (2F + P + 2)th to the Nth pixel columns, where 2F + P + 3 < N.

[0081] It should be noted that when F = 2x, x is an integer greater than or equal to 1, and P = 2y, y is an integer greater than or equal to 0, as Figure 6As shown, in the direction from the first display area AA1 to the second display area AA2, if the first signal line corresponding to the first pixel column in the first display area AA1 is the auxiliary signal line 30, since the transmission signal lines 20 and the auxiliary signal lines 30 corresponding to two adjacent pixel columns are arranged in a mirror image along the first direction Y, the last signal line corresponding to the (2F + P)-th pixel column is the auxiliary signal line 30, and the first signal line corresponding to the (2F + P + 1)-th pixel column is also the auxiliary signal line. That is, the auxiliary signal line 30 corresponding to the (2F + P)-th pixel column and the auxiliary signal line 30 corresponding to the (2F + P + 1)-th pixel column are arranged adjacent to each other, and the auxiliary signal line 30 corresponding to the (2F + P)-th pixel column is electrically connected to the transmission signal line 20 corresponding to the pixel column with the same color as the (2F + P + 1)-th pixel column among the first to F-th pixel columns through the connection signal line 50. Therefore, an additional lead wire 40 needs to be electrically connected to the auxiliary signal line 30 corresponding to the (2F + P + 1)-th pixel column, so that the transmission signal line 20 corresponding to the (2F + P + 1)-th pixel column can be electrically connected to the same layer of lead wire 40 in the fan-out area FA as the auxiliary signal line 30 corresponding to the (2F + P)-th pixel column. At this time, although the auxiliary signal line 30 corresponding to the (2F + P + 1)-th pixel column is electrically connected to a lead wire in the fan-out area FA, the auxiliary signal line 30 corresponding to the (2F + P + 1)-th pixel column is no longer electrically connected to the transmission signal lines 20 of other pixel columns. The transmission signal lines 20 corresponding to the (2F + P + 2)-th to N-th pixel columns can be directly electrically connected to the (2F + P + 3)-th to (N + 1)-th lead wires 40 in sequence.

[0082] It should also be noted that since the auxiliary signal line 30 corresponding to the (2F + P + 1)-th pixel column is connected to a lead wire 40 in the fan-out area FA, the total number of lead wires 40 in the fan-out area FA is N + 1, which is one more than the number of columns N of the pixel columns.

[0083] Optionally, in another embodiment of the present application, as Figure 7 shown, Figure 7 is another partially enlarged schematic diagram of the display panel provided by the embodiment of the present application, corresponding to Figure 1 the rectangular dashed box part, it can be seen that in the direction from the first display area AA1 to the second display area AA2, the first signal line corresponding to the first pixel column in the first display area AA1 is the transmission signal line 20;

[0084] In the direction from the first display area AA1 to the second display area AA2, the fan-out area FA is further provided with the (2F + P + 1)-th to N-th lead wires 40, wherein the (2F + P + 1)-th to N-th lead wires are electrically connected to the transmission signal lines 20 corresponding to the (2F + P + 1)-th to N-th pixel columns in sequence, where 2F + P + 1 < N.

[0085] It should be noted that when F = 2x, where x is an integer greater than or equal to 1, and P = 2y, where y is an integer greater than or equal to 0, as Figure 7 shown, in the direction from the first display area AA1 to the second display area AA2, if the first signal line corresponding to the first pixel column in the first display area AA1 is the transmission signal line 20, since the adjacent transmission signal line 20 and the auxiliary signal line 30 corresponding to two pixel columns are arranged in a mirror image along the first direction Y, the last signal line corresponding to the (2F + P)-th pixel column is the transmission signal line 20, and the first signal line corresponding to the (2F + P + 1)-th pixel column is also the transmission signal line 20, that is, the transmission signal line 20 corresponding to the (2F + P)-th pixel column and the transmission signal line 20 corresponding to the (2F + P + 1)-th pixel column are adjacent to each other, and the auxiliary signal line 30 corresponding to the (2F + P)-th pixel column is electrically connected to the transmission signal line 20 corresponding to the pixel column with the same color as the (2F + P + 1)-th pixel column among the first to F-th pixel columns through the connection signal line 50. Therefore, it is no longer necessary to electrically connect a lead 40 to the auxiliary signal line 30 corresponding to the (2F + P + 1)-th pixel column, and the transmission signal line 20 corresponding to the (2F + P + 1)-th pixel column can be electrically connected to the same layer of lead 40 in the fan-out area FA as the auxiliary signal line corresponding to the (2F + P)-th pixel column. Moreover, the transmission signal lines 20 corresponding to the (2F + P + 1)-th to N-th pixel columns are directly electrically connected to the (2F + P + 1)-th to N-th leads 40 in sequence. At this time, the total number of leads 40 in the fan-out area FA is N, which is equal to the number of columns N of the pixel columns.

[0086] On the basis that the transmission signal line 20 corresponding to any one of the first to F-th pixel columns is electrically connected to the auxiliary signal line 30 corresponding to another pixel column among the (F + P + 1)-th to (2F + P)-th pixel columns through the connection signal line 50, optionally, in an embodiment of the present application, as Figure 6 and Figure 7 shown, the transmission signal line 20 corresponding to the i-th pixel column is electrically connected to the auxiliary signal line 30 corresponding to the (2F + P + 1 - i)-th pixel column, where 1 ≤ i ≤ F.

[0087] Since the (2F + P + 1 - i)-th pixel column in the direction from the first pixel column along the first display area AA1 to the second display area AA2 is the i-th pixel column in the direction from the (2F + P)-th pixel column along the second display area AA2 to the first display area AA1, therefore, in this embodiment, the transmission signal line 20 corresponding to the i-th pixel column in the direction from the first pixel column along the first display area AA1 to the second display area AA2 is electrically connected to the auxiliary signal line 30 of the i-th pixel column in the direction from the (2F + P)-th pixel column along the second display area AA2 to the first display area AA1 through the connection signal line 50, so that the plurality of connection signal lines 50 extending along the second direction X in the display area AA do not overlap with each other, thereby reducing the coupling between the connection signal lines 50.

[0088] It should be noted that the above embodiment takes P = 2y, where y is an integer greater than or equal to 0, as an example to illustrate the corresponding connection method between the transmission signal line 20 of the first to F-th pixel columns and the auxiliary signal line 30 of the (F + P + 1)-th to (2F + P)-th pixel columns in the display area AA, and the corresponding connection method between the transmission signal line 20 and the auxiliary signal line 30 of the (F + P + 1)-th to N-th pixel columns in the display area AA and the lead 40 in the fan-out area FA. Of course, P can also be an odd number, that is, P = 2y + 1, where y is an integer greater than or equal to 0. At this time, the corresponding connection method between the transmission signal line 20 of the first to F-th pixel columns and the auxiliary signal line 30 of the (F + P + 1)-th to (2F + P)-th pixel columns in the display area AA, and the corresponding connection method between the transmission signal line 20 and the auxiliary signal line 30 of the (F + P + 1)-th to N-th pixel columns in the display area AA and the lead 40 in the fan-out area FA can be adjusted according to the above embodiments, which will not be elaborated here.

[0089] Based on any of the above embodiments, optionally, in an embodiment of the present application, as Figure 8 shown, the display panel further includes a cathode layer SE covering the display area AA, and the cathode layer SE has a fixed potential.

[0090] Referring to Figure 6 and Figure 7 shown, in this embodiment, among the auxiliary signal lines 30 in the display area AA, other auxiliary signal lines 30 except those electrically connected to the transmission signal lines 20 corresponding to the pixel columns are all electrically connected to the cathode layer SE. There are a total of N - 2F - P pixel columns from the (2F + P + 1)-th to the N-th pixel columns, and (N - 2F - P) / N ≥ 1 / 12.

[0091] It should be noted that, as Figure 8As shown, the display panel further includes a first power line 60. The cathode layer SE is connected to the power pin of the pin region PA through the first power line 60, so that the first power signal output from the power pin of the pin region PA is transmitted to the cathode layer SE through the first power line 60. The cathode layer SE is shared by each sub-pixel in the display area AA, and the first power signal transmitted to the cathode layer SE is a fixed potential.

[0092] However, in practice, due to the resistance on the first power line 60 and the cathode layer SE, there is a voltage drop (IR Drop) on the first power line 60 and the cathode layer SE, resulting in inconsistent display brightness.

[0093] As known from the foregoing, the auxiliary signal lines 30 corresponding to some pixel columns in the display area AA are used to connect the leads 40 in the fan-out area FA and the transmission signal lines 20 of other pixel columns. In order to achieve etching uniformity and reflection effect, an auxiliary signal line 30 is provided corresponding to each pixel column 10. Then, in this embodiment, the other auxiliary signal lines 30 (also referred to as pseudo-auxiliary signal lines) in the display area AA except for the auxiliary signal lines 30 electrically connected to the transmission signal lines 20 corresponding to the pixel columns are all electrically connected to the cathode layer SE, so that the other auxiliary signal lines 30 in the display area AA except for the auxiliary signal lines 30 electrically connected to the transmission signal lines 20 corresponding to the pixel columns are in parallel with the cathode layer SE, which is beneficial to reducing the resistance of the cathode layer SE, thereby making the voltage drops in different regions of the cathode layer SE tend to be consistent, and further making the voltage of the cathode layer SE in the entire display area AA tend to be consistent, which is beneficial to improving the uniformity of the display brightness.

[0094] Moreover, considering that the resistance of the cathode layer SE is larger in the region closer to its center and the consumed voltage drop is more, therefore, in this embodiment, referring to Figure 6 and Figure 7 As shown, it is set that the proportion of the N - 2F - P pixel columns from the (2F + P + 1)-th to the N-th pixel columns in the non-FIAA region (NFIAA) in the total N pixel columns is greater than or equal to 1 / 12, that is, (N - 2F - P) / N ≥ 1 / 12, so that the number of the auxiliary signal lines 30 corresponding to these N - 2F - P pixel columns (a total of N - 2F - P pseudo-auxiliary signal lines) is not too small, so that these N - 2F - P pseudo-auxiliary signal lines 30 are in parallel with the central region of the cathode layer SE, reducing the resistance of the central region of the cathode layer SE, and further improving the uniformity of the display brightness.

[0095] It should also be noted that the connection signal line 50 extending along the second direction X in the display area AA is only used when it is necessary to connect the auxiliary signal line 30 of one pixel column and the transmission signal line 20 of another pixel column. That is to say, only a partial area of the display area AA needs to be provided with the connection signal line 50. In fact, considering the etching uniformity and reflection effect, a plurality of connection signal lines 50 are uniformly arranged in the entire display area AA. Among them, some connection signal lines 50 are used to connect the auxiliary signal line 30 of one pixel column and the transmission signal line 20 of another pixel column, while the other connection signal lines 50 that are not used to connect the auxiliary signal line 30 of one pixel column and the transmission signal line 20 of another pixel column (also called pseudo-connection signal lines) are also arranged to be electrically connected to the cathode layer SE.

[0096] As Figure 8 shown, Figure 8 the auxiliary signal lines 30 shown in Figure 8 are all pseudo-auxiliary signal lines, and the connection signal lines 50 shown in Figure 8 are all pseudo-connection signal lines. The pseudo-connection signal line 50 and the pseudo-auxiliary signal line 30 are located in different metal layers, and the overlapping part between the two can be connected by punching ( Figure 8 the black dots in Figure 8 ), so as to form a grid-like connection relationship as shown in Figure 8 . The pseudo-connection signal lines and pseudo-auxiliary signal lines in the grid-like connection are all electrically connected to the cathode layer SE, which will further reduce the resistance of the cathode layer SE and further improve the uniformity of the display brightness. It should be noted that

[0097] In an alternative embodiment of the present application, as Figure 1 shown, the display area AA includes a first display area AA1 and a second display area AA2 symmetrically arranged along the first direction Y;

[0098] As Figure 9 shown, Figure 9 is another partial enlarged schematic diagram of the display panel provided by the embodiment of the present application, corresponding to Figure 1 the rectangular dotted line box part. It can be seen that in the direction from the first display area AA1 to the second display area AA2, the first display area AA1 is provided with the first to the Nth pixel columns, and the first signal line corresponding to the first pixel column is the auxiliary signal line 30. Among them, the transmission signal line 20 corresponding to any one of the first to the Fth pixel columns is electrically connected to the auxiliary signal line 30 corresponding to another pixel column among the Fth to the 2F-1th pixel columns through the connection signal line 50;

[0099] As Figure 9As shown, in the direction from the first display area AA1 to the second display area AA2, the fan-out area FA is provided with the first to the Nth leads. Among them, the first lead is electrically connected to the auxiliary signal line 30 corresponding to the Fth pixel column, and the second to the (2F - 1)th leads are sequentially electrically connected to the transmission signal lines 20 and the auxiliary signal line 30 corresponding to the (F + 1)th to the (2F - 1)th pixel columns. The (2F)th to the Nth leads 40 are sequentially electrically connected to the transmission signal lines 20 corresponding to the (2F)th to the Nth pixel columns;

[0100] Among them, 2F < N, and F = 2x, where x is an integer greater than or equal to 1.

[0101] In this embodiment, since F = 2x, where x is an integer greater than or equal to 1, and the transmission signal lines 20 and the auxiliary signal lines 30 of two adjacent pixel columns are arranged in a mirror image along the first direction Y. Therefore, if the first signal line corresponding to the first pixel column is the auxiliary signal line 30, then the last signal line corresponding to the Fth pixel column is also the auxiliary signal line 30. There are a total of F pixel columns from the Fth to the (2F - 1)th pixel columns, and F auxiliary signal lines 30 are correspondingly provided, which can be electrically connected to the total F transmission signal lines 20 corresponding to the first to the Fth pixel columns.

[0102] In this embodiment, the transmission signal line 20 corresponding to the first pixel column 11 in the first to the Fth pixel columns is electrically connected to the auxiliary signal line 30 corresponding to the second pixel column 12 in the Fth to the (2F - 1)th pixel columns through the connection signal line 50. The transmission signal line 20 corresponding to the second pixel column 12 in the first to the Fth pixel columns is electrically connected to the auxiliary signal line 30 corresponding to the first pixel column 11 in the Fth to the (2F - 1)th pixel columns through the connection signal line 50. Moreover, the auxiliary signal line 30 corresponding to the Fth pixel column is electrically connected to the first lead 40 in the fan-out area FA. The transmission signal lines 20 and the auxiliary signal lines 30 corresponding to the (F + 1)th to the (2F - 1)th pixel columns are sequentially electrically connected to the second to the (2F - 1)th leads 40 in the fan-out area FA, so that on the basis of maintaining the alternating arrangement of the first lead 41 and the second lead 42 in the fan-out area FA along the second direction X, the transmission signal lines 20 corresponding to the pixel columns 10 where the same-color sub-pixels are located are electrically connected to the same-layer leads 40 in the fan-out area FA.

[0103] In this embodiment, since F = 2x, where x is an integer greater than or equal to 1, and the transmission signal lines 20 and the auxiliary signal lines 30 of two adjacent pixel columns are arranged in a mirror image along the first direction Y, therefore, if the first signal line corresponding to the first pixel column is the auxiliary signal line 30, then the first signal line corresponding to the (2F - 1)-th pixel column is the auxiliary signal line 30, the last signal line corresponding to the (2F - 1)-th pixel column is the transmission signal line 20, which is electrically connected to the (2F - 1)-th lead in the fan-out region FA, the first signal line corresponding to the 2F-th pixel column is the transmission signal line 20, which is electrically connected to the 2F-th lead in the fan-out region FA, exactly enabling the transmission signal lines 20 corresponding to the (2F - 1)-th pixel column and the transmission signal lines 20 corresponding to the 2F-th pixel column to be respectively electrically connected to two leads 40 arranged in different layers in the fan-out region FA. Subsequently, the transmission signal lines 20 corresponding to the 2F-th to the N-th pixel columns are sequentially electrically connected to the 2F-th to the N-th leads 40 in the fan-out region FA.

[0104] Based on the above embodiments, optionally, in an embodiment of the present application, as Figure 9 shown, the auxiliary signal line 30 corresponding to the (F + 2j)-th pixel column is electrically connected to the transmission signal line 20 corresponding to the (F - 2j - 1)-th pixel column through the connection signal line 50;

[0105] the auxiliary signal line 30 corresponding to the (F + 2j + 1)-th pixel column is electrically connected to the transmission signal corresponding to the (F - 2j)-th pixel column through the connection signal line 50;

[0106] where j is an integer greater than or equal to 0.

[0107] Specifically, for example, as Figure 9 shown, when j = 0, the auxiliary signal line 30 corresponding to the F-th pixel column is electrically connected to the transmission signal line 20 corresponding to the (F - 1)-th pixel column through the connection signal line 50, and the auxiliary signal line 30 corresponding to the (F + 1)-th pixel column is electrically connected to the transmission signal line 20 corresponding to the F-th pixel column through the connection signal line 50.

[0108] For another example, as Figure 9 shown, when j = 1, the auxiliary signal line 30 corresponding to the (F + 2)-th pixel column is electrically connected to the transmission signal line 20 corresponding to the (F - 3)-th pixel column through the connection signal line 50, and the auxiliary signal line 30 corresponding to the (F + 3)-th pixel column is electrically connected to the transmission signal line 20 corresponding to the (F - 2)-th pixel column through the connection signal line 50.

[0109] By analogy, when j = F / 2 - 1, the auxiliary signal line 30 corresponding to the 2F - 2nd pixel column is electrically connected to the transmission signal line 20 corresponding to the 1st pixel column through the connection signal line 50, and the auxiliary signal line 30 corresponding to the 2F - 1st pixel column is electrically connected to the transmission signal corresponding to the 2nd pixel column through the connection signal line 50.

[0110] In this embodiment, when the auxiliary signal line 30 corresponding to the (F + 2j)th pixel column is electrically connected to the transmission signal line 20 corresponding to the (F - 2j - 1)th pixel column through the connection signal line 50, and the auxiliary signal line 30 corresponding to the (F + 2j + 1)th pixel column is electrically connected to the transmission signal corresponding to the (F - 2j)th pixel column through the connection signal line 50, there is an overlapping situation between the connection signal line 50 and the auxiliary signal line 30.

[0111] Based on the above - mentioned embodiment, optionally, in an embodiment of the present application, as Figure 8 shown, the display panel further includes a cathode layer SE covering the AA display area, and the cathode layer SE has a fixed potential;

[0112] Among the auxiliary signal lines 30 in the display area AA, except for the auxiliary signal lines 30 electrically connected to the transmission signal lines 20 corresponding to the pixel columns 10, the other auxiliary signal lines 30 are all electrically connected to the cathode layer SE. There are a total of N - 2F + 1 pixel columns from the 2Fth to the Nth pixel columns, and (N - 2F + 1) / N ≥ 1 / 12.

[0113] As known from the foregoing, the cathode layer SE is connected to the power pin of the pin area PA through the first power supply line 60, so that the first power signal output from the power pin of the pin area PA is transmitted to the cathode layer SE through the first power supply line 60. The cathode layer SE is shared by each sub - pixel in the display AA, and the first power signal transmitted to the cathode layer SE is a fixed potential.

[0114] In this embodiment, among the auxiliary signal lines 30 in the display area AA, except for the auxiliary signal lines 30 electrically connected to the transmission signal lines 20 corresponding to the pixel columns (also referred to as pseudo - auxiliary signal lines), they are all electrically connected to the cathode layer SE, so that among the auxiliary signal lines 30 in the display area AA, except for the auxiliary signal lines 30 electrically connected to the transmission signal lines 20 corresponding to the pixel columns, the other auxiliary signal lines 30 are in parallel with the cathode layer SE, which is beneficial to reducing the resistance of the cathode layer SE, thereby making the voltage drops in different regions of the cathode layer SE tend to be consistent, and further making the voltage of the cathode layer SE in the entire display area AA tend to be consistent, which is beneficial to improving the uniformity of display brightness.

[0115] And, considering that the resistance of the cathode layer SE is larger and the consumed voltage drop is more in the area closer to its central region, therefore, in this embodiment, referring to Figure 9As shown, the proportion of the N - 2F + 1 pixel columns from the 2F - th to the N - th pixel column in the non - FIAA area (NFIAA) to the total N pixel columns is greater than or equal to 1 / 12, that is, (N - 2F + 1) / N ≥ 1 / 12, so that the number of the auxiliary signal lines 30 corresponding to these N - 2F + 1 pixel columns (a total of N - 2F + 1 pseudo - auxiliary signal lines) is not too small, so that these N - 2F + 1 pseudo - auxiliary signal lines 30 are connected in parallel with the central area of the cathode layer SE, reducing the resistance of the central area of the cathode layer SE and further improving the uniformity of display brightness.

[0116] It should be noted that the connection signal lines 50 extending along the second direction X in the display area AA are only used when connecting the auxiliary signal line 30 of one pixel column and the transmission signal line 20 of another pixel column. That is to say, only part of the display area AA needs to be provided with the connection signal lines 50. In fact, considering the etching uniformity and reflection effect, multiple connection signal lines 50 are also uniformly provided in the entire display area AA. Among them, some connection signal lines 50 are used to connect the auxiliary signal line 30 of one pixel column and the transmission signal line 20 of another pixel column, and the other connection signal lines 50 that are not used to connect the auxiliary signal line 30 of one pixel column and the transmission signal line 20 of another pixel column (also called pseudo - connection signal lines) are also provided to be electrically connected to the cathode layer SE.

[0117] As Figure 8 shown, Figure 8 the auxiliary signal lines 30 shown in Figure 8 are all pseudo - auxiliary signal lines, and the connection signal lines 50 shown in Figure 8 are all pseudo - connection signal lines. The pseudo - connection signal lines 50 and the pseudo - auxiliary signal lines 30 are located in different metal layers, and the overlapping part can be connected by punching (the black dots in Figure 8 ), so as to form a grid - like connection relationship as shown in Figure 8 . The grid - like connected pseudo - connection signal lines and pseudo - auxiliary signal lines are all electrically connected to the cathode layer SE, which will further reduce the resistance of the cathode layer SE and further improve the uniformity of display brightness. It should be noted that

[0118] It should be noted that Figure 6 , Figure 7 and Figure 9Only an example is given that the transmission signal lines 20 corresponding to the first pixel column 11 in the first to Fth pixel columns are electrically connected to the auxiliary signal lines 30 corresponding to the second pixel column 12 in the Qth to Q+Fth pixel columns through the connection signal lines 50, and the transmission signal lines 20 corresponding to the second pixel column 12 in the first to Fth pixel columns are electrically connected to the auxiliary signal lines 30 corresponding to the first pixel column 11 in the Qth to Q+Fth pixel columns through the connection signal lines 50. On the basis that the first lead 41 and the second lead 42 in the fan-out area FA are alternately arranged along the second direction X, several cases of the corresponding connection modes between the transmission signal lines 20 of the first to Fth pixel columns and the auxiliary signal lines 30 of the Qth to Q+Fth pixel columns in the display area AA, and the corresponding connection modes between the transmission signal lines 20 and the auxiliary signal lines 30 of the Qth to Nth pixel columns in the display area AA and the leads 40 in the fan-out area FA are shown. On this basis, more connection modes can be derived, and all of them should be within the protection scope of this application.

[0119] On the basis of any of the above embodiments, considering the process limitations of the driver integrated circuit IC, in an embodiment of this application, F = 8z, where z is an integer greater than or equal to 1, that is, the number of pixel columns F in the FIAA area is a multiple of 8.

[0120] On the basis of any of the above embodiments, as Figure 1 shown, in two adjacent pixel columns, one pixel column includes a red sub-pixel R and a blue sub-pixel B alternately arranged along the first direction Y, and the other pixel column includes a plurality of green sub-pixels G arranged in sequence along the first direction Y.

[0121] An embodiment of this application also provides a display device, as Figure 10 shown, as Figure 10 shown, the display device 100 includes the display panel 200 provided in any of the above embodiments. Since the display panel has been described in detail in the foregoing embodiments, it will not be elaborated here. The display device can be any electronic device with a display function, such as a touch display screen, a mobile phone, a tablet computer, a notebook computer, an e-reader, or a television.

[0122] In summary, the display panel and the display device provided by the embodiments of the present application include a display area and a fan-out area arranged in sequence along a first direction. The display area is provided with a plurality of pixel columns arranged in sequence along a second direction, and the fan-out area is provided with a plurality of leads arranged in sequence along the second direction. The leads are electrically connected to the transmission signal lines corresponding to the respective pixel columns one by one, so as to provide data signals for the pixel columns. Among them, at least some of the pixel columns are further correspondingly provided with an auxiliary signal line, and at least some of the leads are electrically connected to the transmission signal lines corresponding to another pixel column through the auxiliary signal line corresponding to one pixel column and the connection signal line extending along the second direction in the display area, so as to implement the FIAA design. Moreover, the transmission signal lines corresponding to the pixel columns where the same-color sub-pixels are located are electrically connected to the leads in the same layer in the fan-out area, so as to avoid the brightness fluctuation of the same-color sub-pixels caused by the signal fluctuation on different-layer leads in the fan-out area, making the brightness fluctuation of the sub-pixels of the same color smaller or non-existent, and improving the display uniformity.

[0123] In this specification, each part is described in a combined manner of parallelism and progression. The key point of each part is the difference from other parts. For the same or similar parts among the parts, reference can be made to each other.

[0124] Regarding the above description of the disclosed embodiments, the features recorded in the embodiments of this specification can be replaced or combined with each other, enabling those skilled in the art to implement or use the present application. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display panel, characterized in that, It includes a display area and a fan-out area arranged in sequence along a first direction; The display area is provided with a plurality of pixel columns arranged in sequence along a second direction, the first direction intersects with the second direction, sub-pixels in two pixel columns separated by one pixel column have the same color, each pixel column is correspondingly provided with a transmission signal line and is electrically connected to the corresponding transmission signal line, and at least some of the pixel columns are also correspondingly provided with an auxiliary signal line; The fan-out area is provided with a plurality of leads arranged in sequence along the second direction, and at least some of the leads are electrically connected to the transmission signal line corresponding to another pixel column through the auxiliary signal line corresponding to one pixel column and the connection signal line extending along the second direction in the display area; Wherein, the transmission signal lines corresponding to the pixel columns where the sub-pixels of the same color are located are electrically connected to the same layer of leads in the fan-out area.

2. The display panel according to claim 1, characterized in that, In the fan-out area, two leads separated by one lead are located in the same metal layer, and adjacent two leads are located in different metal layers.

3. The display panel according to claim 2, wherein For two adjacent pixel columns correspondingly provided with the transmission signal line and the auxiliary signal line at the same time, the transmission signal line and the auxiliary signal line are arranged symmetrically along the first direction.

4. The display panel according to claim 3, characterized in that, The display area includes a first display area and a second display area symmetrically arranged along the first direction; In the direction from the first display area to the second display area, the first display area is provided with the 1st to the Nth pixel columns. Among them, the transmission signal line corresponding to any one of the 1st to the Fth pixel columns is electrically connected to the auxiliary signal line corresponding to another pixel column among the Qth to the Q+Fth pixel columns through the connection signal line, and the transmission signal lines and auxiliary signal lines corresponding to the Qth to the Q+Fth pixel columns are sequentially electrically connected to the leads; The plurality of pixel columns include a first pixel column and a second pixel column arranged alternately along the second direction. The transmission signal line corresponding to the first pixel column among the 1st to the Fth pixel columns is electrically connected to the auxiliary signal line of the second pixel column among the Qth to the Q+Fth pixel columns through the connection signal line, and the transmission signal line corresponding to the second pixel column among the 1st to the Fth pixel columns is electrically connected to the auxiliary signal line of the first pixel column among the Qth to the Q+Fth pixel columns through the connection signal line; Wherein, F = 2x, x is an integer greater than or equal to 1, and Q+F < N.

5. The display panel according to claim 3, wherein The display area includes a first display area and a second display area symmetrically arranged along the first direction; In the direction from the first display area to the second display area, the first display area is provided with the 1st to the Nth pixel columns. Among them, the transmission signal line corresponding to any one of the 1st to the Fth pixel columns is electrically connected to the auxiliary signal line corresponding to another pixel column among the F+P+1th to the 2F+Pth pixel columns through the connection signal line; In the direction from the first display area to the second display area, at least the first to the (2F + P)-th leads are provided in the fan-out area, wherein the (P + 1)-th to the (2F + P)-th leads are sequentially electrically connected to the transmission signal lines and the auxiliary signal lines corresponding to the (F + P + 1)-th to the (2F + P)-th pixel columns; Wherein, 2F + P < N, F = 2x, and x is an integer greater than or equal to 1.

6. The display panel according to claim 5, wherein P = 2y, and y is an integer greater than or equal to 0.

7. The display panel according to claim 6, characterized in that, In the direction from the first display area to the second display area, the first signal line corresponding to the first pixel column in the first display area is an auxiliary signal line; In the direction from the first display area to the second display area, the (2F + P + 1)-th to the (N + 1)-th leads are further provided in the fan-out area, wherein the (2F + P + 1)-th to the (2F + P + 2)-th leads are sequentially electrically connected to the transmission signal lines and the auxiliary signal lines corresponding to the (2F + P + 1)-th pixel column, and the (2F + P + 3)-th to the (N + 1)-th leads are sequentially electrically connected to the transmission signal lines corresponding to the (2F + P + 2)-th to the N-th pixel columns, wherein 2F + P + 3 < N.

8. The display panel according to claim 6, characterized in that, In the direction from the first display area to the second display area, the first signal line corresponding to the first pixel column in the first display area is a transmission signal line; In the direction from the first display area to the second display area, the (2F + P + 1)-th to the N-th leads are further provided in the fan-out area, wherein the (2F + P + 1)-th to the N-th leads are sequentially electrically connected to the transmission signal lines corresponding to the (2F + P + 1)-th to the N-th pixel columns, wherein 2F + P + 1 < N.

9. The display panel according to claim 6, wherein The transmission signal line corresponding to the i-th pixel column is electrically connected to the auxiliary signal line corresponding to the (2F + P + 1 - i)-th pixel column through the connection signal line, wherein 1 ≤ i ≤ F.

10. The display panel according to claim 5, characterized in that, It further includes a cathode layer covering the display area, and the cathode layer has a fixed potential; All the other auxiliary signal lines in the display area except the auxiliary signal lines electrically connected to the transmission signal lines corresponding to the pixel columns are electrically connected to the cathode layer. There are a total of N - 2F - P pixel columns from the (2F + P + 1)-th to the N-th pixel columns, and (N - 2F - P) / N ≥ 1 / 12.

11. The display panel according to claim 3, wherein The display area includes a first display area and a second display area symmetrically arranged along the first direction; In the direction from the first display area to the second display area, the first to the N-th pixel columns are provided in the first display area, and the first signal line corresponding to the first pixel column is an auxiliary signal line. Among them, the transmission signal line corresponding to any one of the first to the F-th pixel columns is electrically connected to the auxiliary signal line corresponding to another pixel column among the F-th to the (2F - 1)-th pixel columns through the connection signal line; In the direction in which the first display area points to the second display area, the fan-out area is provided with the first to the Nth leads, where the first lead is electrically connected to the auxiliary signal line corresponding to the Fth pixel column, the second to the (2F - 1)th leads are sequentially electrically connected to the transmission signal lines and the auxiliary signal lines corresponding to the (F + 1)th to the (2F - 1)th pixel columns, and the (2F)th to the Nth leads are sequentially electrically connected to the transmission signal lines corresponding to the (2F)th to the Nth pixel columns; where 2F < N, and F = 2x, and x is an integer greater than or equal to 1.

12. The display panel according to claim 11, wherein, The auxiliary signal line corresponding to the (F + 2j)th pixel column is electrically connected to the transmission signal line corresponding to the (F - 2j - 1)th pixel column through the connection signal line; The auxiliary signal line corresponding to the (F + 2j + 1)th pixel column is electrically connected to the transmission signal corresponding to the (F - 2j)th pixel column through the connection signal line; where j is an integer greater than or equal to 0.

13. The display panel according to claim 11, wherein It further includes a cathode layer covering the display area, and the cathode layer has a fixed potential; Other auxiliary signal lines in the display area except those electrically connected to the transmission signal lines corresponding to the pixel columns are all electrically connected to the cathode layer. There are a total of N - 2F + 1 pixel columns from the (2F)th to the Nth pixel columns, and (N - 2F + 1) / N ≥ 1 / 12.

14. The display panel according to claim 7, 8 or 11, characterized in that, F = 8z, and z is an integer greater than or equal to 1.

15. The display panel according to claim 1, characterized in that, Among two adjacent pixel columns, one pixel column includes a red sub-pixel and a blue sub-pixel alternately arranged along the first direction, and the other pixel column includes a plurality of green sub-pixels arranged in sequence along the first direction.

16. The display panel according to claim 1, wherein, It further includes: A substrate; A first metal layer and a second metal layer which are arranged in different layers on one side of the substrate; The transmission signal lines and the auxiliary signal lines are both located in the first metal layer, and the connection signal lines are located in the second metal layer.

17. A display device, characterized in that, It includes the display panel according to any one of claims 1 - 16.

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