Display substrate and display device

Abstract

The invention discloses a display substrate and a display device. The display substrate comprises a display area and a non-display area. The display area comprises a plurality of pixel units, a signal wire is arranged in the non-display area, and the signal wire is electrically connected with the pixel units; an auxiliary structure is further arranged in the non-display area, the auxiliary structure has the same routing parameter as the signal routing, and / or the auxiliary structure has the same graphic parameter as the pixel unit; the routing parameters comprise at least one of the extension direction, the line width and the line distance; the graphic parameters comprise shapes and / or sizes; and the auxiliary structure is respectively insulated from the signal wires and the pixel units. According to the display substrate provided by the embodiment of the invention, by arranging the auxiliary structure, the unfolding width of the packaging adhesive in the packaging process can be consistent, and the packaging adhesive is prevented from overflowing to the display area to damage the pixel units.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more particularly to a display substrate and a display device. Background Technology

[0002] With the continuous progress and development of society, display devices are being used in more and more electronic devices, becoming an indispensable tool for people today.

[0003] In the current display device encapsulation process, the display substrate and cover plate need to be bonded together using encapsulating adhesive. However, during the bonding process, the encapsulating adhesive needs to be spread out in the non-display area to bond the cover plate and display substrate. This spread adhesive can easily overflow into the display area, damaging the pixels and affecting the display effect. This is especially true for existing narrow-bezel displays, which have even higher requirements for adhesive spread; during the lamination process, the adhesive is more likely to overflow into the display area, causing pixel damage.

[0004] The problem of encapsulating adhesive easily overflowing into the display area during the bonding process between the cover plate and the display substrate in existing display devices has become a technical problem that urgently needs to be solved in the industry. Summary of the Invention

[0005] The present invention provides a display substrate and a display device to solve the problem of encapsulating adhesive overflowing into the display area during the packaging process of existing display devices.

[0006] According to one aspect of the present invention, a display substrate is provided, comprising: a display area and a non-display area; The display area includes multiple pixel units, and the non-display area is provided with signal traces, which are electrically connected to the pixel units. The non-display area is further provided with an auxiliary structure, the auxiliary structure having the same routing parameters as the signal trace, and / or the auxiliary structure having the same graphic parameters as the pixel unit; the routing parameters include at least one of extension direction, line width, and line spacing; the graphic parameters include shape and / or size; the auxiliary structure is respectively insulated from the signal trace and the pixel unit.

[0007] Optionally, the auxiliary structure includes an auxiliary trace, which is located on the side of the signal trace away from the display area, and the auxiliary trace has the same trace parameters as the signal trace.

[0008] Optionally, the non-display area includes a first non-display area and a second non-display area; along a first direction, the first non-display area and the second non-display area are located on both sides of the display area; The first non-display area and the second non-display area are respectively provided with the signal traces and the auxiliary traces.

[0009] Optionally, the signal trace includes a first trace portion and a second trace portion, the first trace portion extends along a second direction, the second direction intersects with the first direction, a first end of the first trace portion is connected to an electrical signal, and the second trace portion is connected to a second end of the first trace portion; In the first non-display area, the second trace extends along a third direction, which intersects both the first direction and the second direction. The auxiliary trace is located on the side of the second trace away from the display area, and the auxiliary trace has the same extension direction as the second trace. In the second non-display area, the second trace extends along a fourth direction, which intersects with the first direction, the second direction, and the third direction. The auxiliary trace is located on the side of the second trace away from the display area, and the auxiliary trace has the same extension direction as the second trace.

[0010] Optionally, the auxiliary trace is disposed on the same layer as the signal trace, and the auxiliary trace is made of the same material as the signal trace.

[0011] Optionally, the signal trace includes a cathode trace or an anode trace, and the pixel unit includes a light-emitting device; The cathode trace is electrically connected to the cathode of the light-emitting device, and the anode trace is electrically connected to the anode of the light-emitting device.

[0012] Optionally, the non-display area includes a first non-display area, a second non-display area, and a third non-display area. Along a first direction, the first non-display area and the second non-display area are located on both sides of the display area; along a second direction, the third non-display area is located on one side of the display area, and the first direction intersects the second direction. The auxiliary structure includes an auxiliary block structure, which has the same graphic parameters as the pixel unit; The third non-display area is provided with a plurality of auxiliary block structures, and the spacing between two adjacent auxiliary block structures is equal to the spacing between two adjacent pixel units.

[0013] Optionally, the non-display area further includes a fourth non-display area, which is disposed opposite to the third non-display area, and along the second direction, the third non-display area and the fourth non-display area are respectively located on both sides of the display area; The signal trace extends to the fourth non-display area, and a corresponding electrical signal is connected in the fourth non-display area.

[0014] Optionally, the display substrate further includes electrostatic discharge (ESD) protection traces; The electrostatic discharge protection trace is located outside the auxiliary structure and the signal trace, and the electrostatic discharge protection trace is insulated from the auxiliary structure and the signal trace respectively.

[0015] According to another aspect of the present invention, a display device is provided, comprising a display substrate as described in any of the above embodiments; the display device further comprises a cover plate and an encapsulating adhesive, the encapsulating adhesive being located between the display substrate and the cover plate, and the encapsulating adhesive being disposed in the non-display area.

[0016] The technical solution of this invention provides an auxiliary structure in the non-display area, with parameters identical to the graphic parameters of the pixel unit and / or the routing parameters of the signal traces. The identical routing parameters of the auxiliary structure and the signal traces in the non-display area of ​​the display substrate ensure that the spread width of the encapsulant in different positions within the non-display area is relatively uniform and minimally variable during encapsulation, preventing the encapsulant from overflowing into the display area. In non-display areas without signal traces, the identical graphic parameters of the auxiliary structure and the pixel unit ensure that the encapsulant experiences uniform resistance in the non-display area of ​​the display substrate with the auxiliary structure during encapsulation. This allows the encapsulant to spread uniformly in the non-display area, resulting in high consistency in its spread and effectively preventing overflow into the display area. This improves the encapsulation effect while effectively protecting the pixel units in the display area.

[0017] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A top view of a display substrate provided in an embodiment of the present invention; Figure 2 A top view of yet another display substrate provided in an embodiment of the present invention; Figure 3 A top view of yet another display substrate provided in an embodiment of the present invention; Figure 4 A top view of yet another display substrate provided in an embodiment of the present invention; Figure 5This is a schematic diagram of a pixel circuit in related technologies; Figure 6 A top view of yet another display substrate provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0021] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0022] As described in the background section, in existing display devices, encapsulating adhesive easily overflows into the display area during the bonding process between the cover plate and the display substrate, causing damage to the pixels. This is especially true for passive organic light-emitting diodes with narrow bezels, where the overflow is even more severe. The inventors' research indicates that the main cause of this problem is uneven wiring in the non-display area, resulting in varying widths of the encapsulating adhesive. Where wiring is sparse, the adhesive spreads wider, while where wiring is dense, the adhesive spreads narrower. Areas with wider adhesive spreads are more prone to overflowing into the display area, affecting the display performance of the device.

[0023] To address the above problems, the present invention provides a display substrate. Figure 1 This is a top view of a display substrate provided in an embodiment of the present invention. Figure 2 This is a top view of another display substrate provided in an embodiment of the present invention. Figure 3 This is a top view of another display substrate provided in an embodiment of the present invention. Figure 4This is a top view of another display substrate provided in an embodiment of the present invention. See also... Figures 1-4 The display substrate 100 includes a display area AA and a non-display area NA. The display area AA includes a plurality of pixel units 10. The non-display area NA is provided with signal traces 20, which are electrically connected to the pixel units 10. The non-display area NA is also provided with an auxiliary structure 30. The auxiliary structure 30 has the same trace parameters as the signal traces 20, and / or the auxiliary structure 30 has the same graphic parameters as the pixel units 10. The trace parameters include at least one of extension direction, line width, and line spacing. The graphic parameters include shape and / or size. The auxiliary structure 30 is insulated from both the signal traces 20 and the pixel units 10.

[0024] Specifically, the display substrate 100 can be a substrate for an Organic Light-Emitting Diode (OLED), wherein the OLED can include an Active-Matrix Organic Light-Emitting Diode (AMOLED) and a Passive-Matrix Organic Light-Emitting Diode (PMOLED). The display substrate 100 includes a display area AA and a non-display area NA, with the non-display area NA surrounding the display area AA. The display area AA contains multiple pixel units 10, which must include at least red, green, and blue pixel units 10. These multiple pixel units 10 can emit light of different colors to achieve the display function of the display device. The non-display area NA contains multiple signal lines 20, which are electrically connected to the pixel units 10. The signal lines 20 can transmit data signals and scan signals to the pixel units 10.

[0025] The non-display area NA also includes an auxiliary structure 30, which at least partially surrounds the pixel unit 10 and / or the signal trace 20. The parameters of the auxiliary structure 30 can be the same as the graphic parameters of the pixel unit 10, or the routing parameters of the signal trace 20. In some embodiments, at least a portion of the parameters of the auxiliary structure 30 can be set to be the same as those of the pixel unit 10. Figure 1In some embodiments, the parameters of the auxiliary structure 30 may be the same as the shape and / or size of the pixel unit 10. In some embodiments, the parameters of the auxiliary structure 30 may be the same as the extension direction, line width, and line spacing of the signal trace 20. In some embodiments, at least a portion of the parameters of the auxiliary structure 30 may be the same as the shape and / or size of the pixel unit 10, and at least a portion of the parameters of the auxiliary structure 30 may be the same as the extension direction, line width, and line spacing of the signal trace 20. The signal traces in the display substrate 100 may be signal lines connected to the pixel unit 10, or signal lines connected to circuits used to drive the pixel unit 10. The auxiliary structure 30 is insulated from both the signal trace 20 and the pixel unit 10 to prevent the auxiliary structure 30 from affecting the display effect.

[0026] In some embodiments, a portion of the non-display area NA is provided with signal traces 20, while another portion is not. Optionally, in the non-display area NA with signal traces 20, the parameters of the auxiliary structure 30 are the same as the trace parameters of the signal traces 20. This ensures that during the encapsulation process, the spread width of the encapsulant in the non-display area NA with signal traces 20 is relatively uniform at different positions, with minimal variation, thus preventing the encapsulant from overflowing from the non-display area NA with signal traces 20 into the display area AA. In the non-display area NA without signal traces 20, the parameters of the auxiliary structure 30 can be the same as the graphic parameters of the pixel unit 10. This ensures that during the encapsulation process, the encapsulant experiences the same resistance in the non-display area NA of the display substrate 100 without signal traces 20, allowing the encapsulant to spread uniformly in the non-display area NA of the display substrate 100, further reducing the phenomenon of encapsulant overflowing into the display area AA.

[0027] By setting an auxiliary structure 30 in the non-display area of ​​the display substrate 100, the auxiliary structure 30 can have the same graphic parameters as the pixel unit 10 and / or the same routing parameters as the signal trace 20. During the bonding process between the display substrate 100 and the cover plate with encapsulant, while ensuring the encapsulation effect between the cover plate and the display substrate 100, the spread width of the encapsulant can be effectively controlled. The auxiliary structure 30 can make the encapsulant spread evenly on the signal trace 20 and the auxiliary structure. The difference in the spread width of the encapsulant in the non-display area NA is small and the consistency is high, avoiding the phenomenon of encapsulant overflowing into the display area AA.

[0028] The display substrate provided in this invention features an auxiliary structure in the non-display area. The parameters of this auxiliary structure are the same as the graphic parameters of the pixel unit and / or the routing parameters of the signal traces. The fact that the auxiliary structure has the same routing parameters as the signal traces in the non-display area of ​​the display substrate ensures that the spread width of the encapsulant in different positions in the non-display area is relatively uniform and the differences are small during the encapsulation process, preventing the encapsulant from overflowing from the non-display area into the display area. In the non-display area without signal traces, the auxiliary structure has the same graphic parameters as the pixel unit, ensuring that the encapsulant experiences the same resistance in the non-display area of ​​the display substrate with the auxiliary structure during the encapsulation process. This allows the encapsulant to spread uniformly in the non-display area of ​​the display substrate, resulting in high consistency in the spread width of the encapsulant and effectively preventing the encapsulant from overflowing into the display area. This improves the encapsulation effect while effectively protecting the pixel units in the display area.

[0029] Optionally, based on the above embodiments, see also... Figure 1 , Figure 3 and Figure 4 The auxiliary structure 30 includes an auxiliary trace 31, which is located on the side of the signal trace 20 away from the display area AA. The auxiliary trace 31 has the same trace parameters as the signal trace 20.

[0030] Specifically, the auxiliary structure 30 of the non-display area NA may include multiple auxiliary traces 31. These auxiliary traces 31 are respectively disposed on the side of the signal trace 20 away from the display area AA, and the parameters of the auxiliary traces 31 are the same as the routing parameters of the signal trace 20. The routing parameters of the signal trace 20 may include the extension direction, line width, and line spacing of the signal trace 20. That is, the extension direction of the auxiliary traces 31 is consistent with the extension direction of at least a portion of the signal trace 20, and the line width of the auxiliary traces 31 is equal to the line width of the signal trace 20. Furthermore, the line spacing between the auxiliary traces 31 is the same as the line spacing between the signal traces 20, and the line spacing between the auxiliary traces 31 and the signal trace 20 is also the same as the line spacing between the signal traces 20. The auxiliary traces 31 and the signal traces 20 are evenly arranged in the non-display area NA, so that the resistance encountered by the encapsulating adhesive during the bonding process is the same, and the spread width on the signal traces 20 and the auxiliary traces 31 is the same, ensuring that the encapsulating adhesive will not overflow into the display area AA.

[0031] Optionally, based on the above embodiments, see also... Figure 1 , Figure 3 and Figure 4The non-display area NA includes a first non-display area NA1 and a second non-display area NA2; along the first direction, the first non-display area NA1 and the second non-display area NA2 are located on both sides of the display area; the first non-display area NA1 and the second non-display area NA2 are respectively provided with signal traces 20 and auxiliary traces 31.

[0032] Specifically, the non-display area NA may include a first non-display area NA1 and a second non-display area NA2. The first non-display area NA1, the display area AA, and the second non-display area NA2 are arranged sequentially along a first direction a, and the first non-display area NA1 and the second non-display area NA2 are respectively located on both sides of the display area AA. Signal traces 20 and auxiliary traces 31 are provided in both the first non-display area NA1 and the second non-display area NA2. The extension directions of the signal traces 20 and auxiliary traces 31 in the first non-display area NA1 may be different from those in the second non-display area NA2. In the first non-display area NA1, the auxiliary traces 31 extend in the same direction as the signal traces 20, and the signal traces 20 and auxiliary traces 31 are evenly distributed in this area. In the second non-display area NA2, the auxiliary traces 31 extend in the same direction as the signal traces 20, and the signal traces 20 and auxiliary traces 31 are evenly distributed in this area. Auxiliary traces 31 are set in the first non-display area NA1 and the second non-display area NA2 respectively, so that the encapsulant on both sides of the display substrate 100 can be spread evenly and the difference in the width of the encapsulant spread is small, which effectively avoids the encapsulant on both sides from overflowing into the display area AA and damaging the pixel unit 10.

[0033] Optionally, based on the above embodiments, see also... Figure 1 and Figure 3 The signal trace 20 includes a first trace portion 21 and a second trace portion 22. The first trace portion 21 extends along a second direction b, which intersects with the first direction a. An electrical signal is connected to the first end of the first trace portion 21. The second trace portion 22 is connected to the second end of the first trace portion 21. In the first non-display area NA1, the second trace portion 22 extends along a third direction c, which intersects with both the first direction a and the second direction b. An auxiliary trace 31 is located on the side of the second trace portion 22 away from the display area AA, and the extension direction of the auxiliary trace 31 is the same as that of the second trace portion 22. In the second non-display area NA2, the second trace portion 22 extends along a fourth direction d, which intersects with the first direction a, the second direction b, and the third direction c. An auxiliary trace 31 is located on the side of the second trace portion 22 away from the display area AA, and the extension direction of the auxiliary trace 31 is the same as that of the second trace portion 22.

[0034] Specifically, the signal traces in the non-display area NA include a first trace portion 21 and a second trace portion 22. The first end of the first trace portion 21 can be connected to the driver chip and receive the corresponding electrical signal. The second end of the first trace portion 21 is connected to the first end of the second trace portion 22, and the second end of the second trace portion 22 is connected to the corresponding pixel unit 10. The first trace portion 21 extends along a second direction b, which is perpendicular to the first direction a.

[0035] Specifically, in the first non-display area NA1, the first trace 21 extends along the second direction b, and the second trace 22 can extend along the third direction c. The auxiliary trace 31 is located on the side of the second trace 22 away from the display area AA, and the auxiliary trace 31 extends in the same direction as the second trace 22, with the same line width and spacing. The third direction c intersects with the first direction a and the second direction b, respectively. The auxiliary trace 31 is insulated from both the first trace 21 and the second trace 22. The auxiliary trace 31 can be provided in areas of the first non-display area NA1 where there are no signal traces 20, and the auxiliary trace 31 has the same routing parameters as the second trace 22. This allows for the even spreading of the applied encapsulating adhesive, preventing it from overflowing from sparse areas of the signal traces 20 in the first non-display area NA1 into the display area AA and damaging the pixel units 10 in the display area AA.

[0036] Specifically, in the second non-display area NA2, the first trace 21 extends along the second direction, and the second trace 22 can extend along the fourth direction d. The auxiliary trace 31 is located on the side of the second trace 22 away from the display area AA, and the auxiliary trace 31 extends in the same direction as the second trace 22. The auxiliary trace 31 has the same line width and line spacing as the second trace 22. That is, the signal trace 20 and auxiliary trace 31 in the first non-display area NA1 can be symmetrically arranged with the signal trace 20 and auxiliary trace 31 in the second non-display area NA2. The fourth direction d intersects with the first direction a, the second direction b, and the third direction c, respectively. In the second non-display area NA2, the auxiliary trace 31 is insulated from both the first trace portion 21 and the second trace portion 22. The auxiliary trace 31 can be provided in areas without signal traces 20, and its routing parameters are the same as those of the second trace portion 22. This allows for the uniform spreading of the applied encapsulant, preventing it from overflowing from sparse areas of the signal traces 20 in the second non-display area NA2 into the display area AA and damaging the pixel units 10 in the display area AA. The auxiliary traces 31 and signal traces 20 in the first non-display area NA1 and the second non-display area NA2 are symmetrical about the central axis of the display substrate 100.

[0037] The signal traces 20 in the non-display area NA may include anode traces or cathode traces. Anode traces can provide a driving voltage to pixel unit 10, while cathode traces can provide a common reference voltage to pixel unit 10. Pixel unit 10 may include light-emitting devices. Figure 5 This is a schematic diagram of a pixel circuit in related technologies, such as... Figure 5 As shown, when the display substrate 100 includes an AMOLED, when the signal trace 20 is an anode trace, the second end of the second trace portion 22 can be electrically connected to the first power supply terminal VDD in the pixel circuit. When the signal trace 20 is a cathode trace, the second end of the second trace portion 22 can be electrically connected to the second power supply terminal VSS in the pixel circuit, that is, electrically connected to the cathode of the light-emitting device. When the display substrate 100 includes a PMOLED, when the signal trace 20 is an anode trace, the second end of the second trace portion 22 can be electrically connected to the anode of the light-emitting device to provide a driving voltage for the light-emitting device. When the signal trace 20 includes a cathode trace, the second end of the second trace portion 22 is electrically connected to the cathode of the light-emitting device.

[0038] Optionally, based on the above embodiments, see also... Figure 1 , Figure 3 and Figure 4 The auxiliary trace 31 is set on the same layer as the signal trace 20, and the auxiliary trace 31 and the signal trace 20 are made of the same material.

[0039] Specifically, the auxiliary traces 31 and signal traces 20 in the first non-display area NA1 and the second non-display area NA2 are located in the same layer of the display substrate 100, and the auxiliary traces 31 and signal traces 20 are made of the same material. All auxiliary traces 31 and signal traces 20 are located in the same film layer. The auxiliary traces 31 and signal traces 20 can be manufactured using the same process, which can reduce manufacturing costs, simplify the production process, and ensure that the encapsulating adhesive does not overflow into the display area AA after unfolding.

[0040] The technical solution provided by this invention provides auxiliary traces on both sides of the non-display area of ​​the display area of ​​the display substrate. The parameters of the auxiliary traces are the same as the trace parameters of the second trace of the signal trace. The auxiliary traces and the signal traces can be manufactured using the same process, which not only reduces the cost, but also ensures that the encapsulating adhesive can be spread evenly, so that the spread width of the encapsulating adhesive is consistent, thus avoiding the encapsulating adhesive from entering the display area and damaging the pixel unit.

[0041] Optionally, based on the above embodiments, see also... Figure 2 , Figure 3 and Figure 4The non-display area NA includes a first non-display area NA1, a second non-display area NA2, and a third non-display area NA3. Along the first direction, the first non-display area NA1 and the second non-display area NA2 are located on both sides of the display area AA. Along the second direction, the third non-display area NA3 is located on one side of the display area AA. The first direction and the second direction intersect. The auxiliary structure 30 includes an auxiliary block structure 32. The auxiliary block structure 32 has the same graphic parameters as the pixel unit 10. The third non-display area NA3 is provided with a plurality of auxiliary block structures 32. The spacing between two adjacent auxiliary block structures 32 is equal to the spacing between two adjacent pixel units 10.

[0042] Specifically, the non-display area NA also includes a third non-display area NA3, which is located on one side of the display area AA along the second direction b. The auxiliary structure 30 may also include multiple auxiliary block structures 32 located within the third non-display area NA3, where signal traces 20 may not be provided. The auxiliary block structures 32 have the same graphic parameters as the pixel unit 10, the same shape as the pixel unit 10, and the same size as the pixel unit 10. Furthermore, the spacing between two adjacent auxiliary block structures 32 is the same as the spacing between two adjacent pixel units 10. The auxiliary block structures 32 are insulated from the pixel unit 10, and the distance between the auxiliary block structure 32 closest to the pixel unit 10 and the pixel unit is greater than 0.5 mm. In the third non-display area NA3, multiple auxiliary block structures 32 are arranged in a matrix. These auxiliary block structures 32 are arrayed according to the graphic parameters of the pixel unit 10, allowing the encapsulating adhesive to spread evenly, resulting in better product adhesion and improved encapsulation. This also prevents the encapsulating adhesive from overflowing into the display area. Furthermore, at the junctions of the first non-display area NA1 and the third non-display area NA3, and at the junctions of the second non-display area NA2 and the third non-display area NA3—that is, at some corners of the display substrate 100—the auxiliary traces 31 and auxiliary block structures 32 increase the resistance to the encapsulating adhesive at the corners of the display substrate 100. This effectively prevents the encapsulating adhesive from overflowing into the display area AA through the corners, avoiding damage to the pixel unit 10 and improving the display effect.

[0043] Multiple auxiliary block structures 32, auxiliary traces 31, and signal traces 20 can be located in the same film layer of the display substrate 100, and all materials are the same. The auxiliary block structures 32, auxiliary traces 31, and signal traces 20 can be fabricated using the same process, which not only reduces manufacturing costs and simplifies the production process, but also ensures that the encapsulating adhesive will not overflow into the display area AA after unfolding, thus preventing damage to the pixel unit 10.

[0044] Optionally, based on the above embodiments, see also... Figures 1-3 The non-display area NA also includes a fourth non-display area NA4, which is positioned opposite to the third non-display area NA3. Along the second direction, the third non-display area NA3 and the fourth non-display area NA4 are located on both sides of the display area. The signal trace 20 extends to the fourth non-display area NA4 and is connected to the corresponding electrical signal in the fourth non-display area NA4.

[0045] Specifically, the non-display area NA of the display substrate 100 also includes a fourth non-display area NA4, which is disposed opposite to the third non-display area NA3. Along the second direction b, the fourth non-display area NA4 and the third non-display area NA3 are located on opposite sides of the display area AA. The first trace portion 21 of the signal traces 20 in the first non-display area NA1 and the second non-display area NA2 extends to the fourth non-display area NA4, and the corresponding electrical signal is connected in the fourth non-display area NA4. The first end of the first trace portion 21 in the fourth non-display area NA4 can be connected to the corresponding driver chip, and data voltage and drive signal are provided to the pixel unit 10 through the signal traces 20.

[0046] Optional, Figure 6 This is a top view of another display substrate provided in an embodiment of the present invention. Based on the above embodiments, see below. Figure 6 The display substrate 100 also includes an electrostatic discharge (ESD) protection trace 40; the ESD protection trace 40 is located around the auxiliary structure 30 and the signal trace 20, and the ESD protection trace 40 is insulated from the auxiliary structure 30 and the signal trace 20, respectively.

[0047] Specifically, the display substrate 100 may further include an electrostatic discharge (ESD) protection trace 40. The ESD protection trace 40 is disposed on the outermost side of the display substrate 100, surrounding the auxiliary structure 30 and the signal trace 20. The ESD protection trace 40 may be disposed in the first non-display area NA1, the second non-display area NA2, and the third non-display area NA3, and extend into the fourth non-display area NA4. In the fourth non-display area NA4, the ESD protection trace 40 may be grounded. The ESD protection trace 40 is insulated from both the auxiliary structure 30 and the signal trace 20. The ESD protection trace 40 primarily serves an ESD protection function, and it is disposed on the same layer as the auxiliary structure 30 and the signal trace 20, using the same manufacturing process. The width of the ESD protection trace 40 needs to be greater than 0.2 mm to provide better ESD protection and effectively protect the display device.

[0048] Optionally, based on the above embodiments, referring to 4, the third non-display area of ​​the display substrate 100 is further provided with alignment mark points 50. The alignment mark points are mainly used to align the display substrate 100 and the cover plate during the packaging process, so as to facilitate accurate alignment of the cover plate and the display substrate 100 during packaging and avoid errors that could lead to packaging failure.

[0049] The display substrate provided in this embodiment of the invention features auxiliary traces in a first and second non-display area, with the auxiliary traces having the same routing parameters as the signal traces. An auxiliary block structure is also provided in a third non-display area, with the auxiliary block structure having the same graphic parameters as the pixel unit. These auxiliary traces and the auxiliary block structure ensure that the encapsulating adhesive can be evenly spread during the encapsulation process, with a uniform spread width. This effectively prevents the encapsulating adhesive from overflowing into the display area, damaging the pixel unit, and affecting the display effect of the display device.

[0050] This invention also provides a display device. Figure 7 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention, such as... Figure 7 As shown, the display device 200 includes the display substrate 100 provided in any of the above embodiments. The display device 200 also includes a cover plate 210 and encapsulating adhesive 220. The encapsulating adhesive 220 is located in the non-display area between the display substrate 100 and the cover plate 210, and is used to fix the display substrate 100 and the cover plate 210. The display device 200 can be a mobile phone, computer, tablet computer, videophone, personal digital assistant, in-vehicle display, smartwatch, smart helmet, or other wearable device. Since the display device provided in the embodiments of the present invention includes the display substrate provided in the embodiments of the present invention, it also has the same beneficial effects, and will not be described again here.

[0051] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A display substrate, characterized in that, include: Display area and non-display area; The display area includes multiple pixel units, and the non-display area is provided with signal traces, which are electrically connected to the pixel units. The non-display area is further provided with an auxiliary structure, the auxiliary structure having the same routing parameters as the signal trace, and / or the auxiliary structure having the same graphic parameters as the pixel unit; the routing parameters include at least one of extension direction, line width, and line spacing; the graphic parameters include shape and / or size; the auxiliary structure is respectively insulated from the signal trace and the pixel unit.

2. The display substrate according to claim 1, characterized in that, The auxiliary structure includes an auxiliary trace, which is located on the side of the signal trace away from the display area, and the auxiliary trace has the same trace parameters as the signal trace.

3. The display substrate according to claim 2, characterized in that, The non-display area includes a first non-display area and a second non-display area; along a first direction, the first non-display area and the second non-display area are located on both sides of the display area; The first non-display area and the second non-display area are respectively provided with the signal traces and the auxiliary traces.

4. The display substrate according to claim 3, characterized in that, The signal trace includes a first trace portion and a second trace portion. The first trace portion extends along a second direction, which intersects with the first direction. A first end of the first trace portion is connected to an electrical signal. The second trace portion is connected to the second end of the first trace portion. In the first non-display area, the second trace extends along a third direction, which intersects both the first direction and the second direction. The auxiliary trace is located on the side of the second trace away from the display area, and the auxiliary trace has the same extension direction as the second trace. In the second non-display area, the second trace extends along a fourth direction, which intersects with the first direction, the second direction, and the third direction. The auxiliary trace is located on the side of the second trace away from the display area, and the auxiliary trace has the same extension direction as the second trace.

5. The display substrate according to claim 2, characterized in that, The auxiliary trace is disposed on the same layer as the signal trace, and the auxiliary trace is made of the same material as the signal trace.

6. The display substrate according to claim 2, characterized in that, The signal traces include cathode traces or anode traces, and the pixel unit includes a light-emitting device; The cathode trace is electrically connected to the cathode of the light-emitting device, and the anode trace is electrically connected to the anode of the light-emitting device.

7. The display substrate according to claim 1, characterized in that, The non-display area includes a first non-display area, a second non-display area, and a third non-display area. Along a first direction, the first non-display area and the second non-display area are located on both sides of the display area; along a second direction, the third non-display area is located on one side of the display area. The first direction and the second direction intersect. The auxiliary structure includes an auxiliary block structure, which has the same graphic parameters as the pixel unit; The third non-display area is provided with a plurality of auxiliary block structures, and the spacing between two adjacent auxiliary block structures is equal to the spacing between two adjacent pixel units.

8. The display substrate according to claim 7, characterized in that, The non-display area further includes a fourth non-display area, which is disposed opposite to the third non-display area. Along the second direction, the third non-display area and the fourth non-display area are respectively located on both sides of the display area. The signal trace extends to the fourth non-display area, and a corresponding electrical signal is connected in the fourth non-display area.

9. The display substrate according to claim 1, characterized in that, The display substrate also includes electrostatic discharge protection traces; The electrostatic discharge protection trace is located outside the auxiliary structure and the signal trace, and the electrostatic discharge protection trace is insulated from the auxiliary structure and the signal trace respectively.

10. A display device, characterized in that, The display device includes the display substrate as described in any one of claims 1-9; the display device further includes a cover plate and an encapsulating adhesive, the encapsulating adhesive being located between the display substrate and the cover plate, and the encapsulating adhesive being disposed in the non-display area.

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