Display substrate and display device

Abstract

A display substrate (10) and a display device. The display substrate (10) includes a substrate, a crack detection line (21), and an electrostatic discharge element (211) electrically connected to the crack detection line (21). The substrate includes a main region (11), an auxiliary region (13), and a necking region (12) connecting the main region (11) and the auxiliary region (13). The display area of ​​the display substrate (10) is located in the main region (11). The crack detection line (21) extends at least partially around the display area and through the necking region (12) to the auxiliary region (13). The length direction of the necking region (13) is parallel to the first direction (D1). The main body region (11), the necking region (12), and the auxiliary region (13) are connected in the second direction (D2). The first direction (D1) and the second direction (D2) intersect. The maximum size of the necking region (12) in the first direction (D1) is smaller than the maximum size of the main body region (11) in the first direction (D1) and smaller than the maximum size of the auxiliary region (13) in the first direction (D1). The electrostatic discharge element (211) is located in the auxiliary region (13). The display substrate (10) helps to improve the detection rate and yield of the display substrate (10).

Description

Technical Field

[0001] This disclosure relates to a display substrate and a display device. Background Technology

[0002] During the manufacturing process of a display panel, cracks can appear in the substrate and / or other layers when the panel is subjected to impact. Over time, these cracks can grow larger and / or propagate within the display panel, leading to significant defects. For example, if a crack forms in a signal line (such as a data line or scan line), it can cause the signal line to break or increase its resistance, resulting in incorrect signal transmission. Furthermore, moisture and other pollutants can penetrate the display panel through the cracks, reducing the reliability of the display device and causing it to malfunction. Summary of the Invention

[0003] This disclosure provides at least one embodiment of a display substrate, including a substrate, a crack detection line, and an electrostatic discharge element electrically connected to the crack detection line. The substrate includes a main region, an auxiliary region, and a necking region connecting the main region and the auxiliary region. A display area of ​​the display substrate is located within the main region. The crack detection line at least partially surrounds the display area and extends through the necking region to the auxiliary region. The length direction of the necking region is parallel to a first direction. The main region, the necking region, and the auxiliary region are connected in a second direction, and the first direction intersects the second direction. The size of the necking region in the first direction is smaller than the maximum size of the main region in the first direction, and the maximum size of the necking region in the first direction is smaller than the maximum size of the auxiliary region in the first direction. The electrostatic discharge element is located in the auxiliary region.

[0004] In some examples, the necking region includes a bending region configured to be bent to fold the auxiliary region toward the back of the main body region.

[0005] In some examples, the ratio of the maximum size of the necking region in the first direction to the maximum size of the main body region in the first direction is in the range of 1 / 6 to 1 / 3.

[0006] In some examples, the size of the auxiliary region gradually increases in the first direction along the second direction and away from the necking region.

[0007] In some examples, the auxiliary region includes a trapezoidal region and a rectangular region connected in the second direction, the upper base of the trapezoidal region being connected to the necking region; the electrostatic discharge element is located in the trapezoidal region or the rectangular region.

[0008] In some examples, the length direction of the electrostatic discharge element is parallel to either side of the trapezoidal region or the rectangular region.

[0009] In some examples, the display substrate further includes a first power line and a second power line, and a plurality of sub-pixels located in the display area. The first power line and the second power line are respectively disposed at least partially around the display area and extend through the necking region to the auxiliary area, and are respectively configured to provide a first power supply voltage and a second power supply voltage to the plurality of sub-pixels, wherein the first power supply voltage is higher than the second power supply voltage; the electrostatic discharge element is located between the first power line and the second power line.

[0010] In some examples, the first power line and the second power line are disposed in the same layer and insulated from each other; at least a portion of the electrostatic discharge element is disposed in the same layer as the first power line and the second power line and is located between the first power line and the second power line.

[0011] In some examples, the electrostatic discharge element includes a first end and a second end, the first end of the electrostatic discharge element being electrically connected to the crack detection line, and the second end of the electrostatic discharge element being electrically connected to either the first power line or the second power line.

[0012] In some examples, the crack detection line includes a first detection line portion and a second detection line portion located in the auxiliary area. The first detection line portion extends from the side of the first power line away from the second power line to between the first power line and the second power line, and is electrically connected to a first end of the electrostatic discharge element. The second detection line portion extends from the side of the second power line away from the first power line to between the first power line and the second power line, and is electrically connected to a first end of the electrostatic discharge element. The first end of the electrostatic discharge element electrically connects the first detection line portion and the second detection line portion.

[0013] In some examples, the electrostatic discharge element includes a capacitor, which includes a first capacitor electrode and a second capacitor electrode, and the first capacitor electrode and the second capacitor electrode respectively serve as a first terminal and a second terminal of the electrostatic discharge element.

[0014] In some examples, the first capacitor electrode is disposed in the same layer as the first power line and the second power line relative to the substrate, and is located between the first power line and the second power line; the second capacitor electrode is located on the side of the first capacitor electrode closer to the substrate, and the first capacitor electrode and the second capacitor electrode at least partially overlap in the direction perpendicular to the substrate.

[0015] In some examples, the crack detection line is located between the first capacitor electrode and the second capacitor electrode in a direction perpendicular to the substrate.

[0016] In some examples, the first capacitor electrode includes a U-shaped electrode and two comb-shaped electrodes respectively connected to two sides of the U-shaped electrode; the second capacitor electrode is at least partially surrounded by the U-shaped electrode, and in a direction perpendicular to the substrate, the second capacitor electrode at least partially overlaps with the two comb-shaped electrodes respectively.

[0017] In some examples, the electrostatic discharge element includes a plurality of transistors, each of the plurality of transistors including a gate, a first terminal and a second terminal, the first terminal and the second terminal of each transistor being electrically connected and serving as a first terminal of the electrostatic discharge element; the gate of each transistor serving as a second terminal of the electrostatic discharge element.

[0018] In some examples, the crack detection line includes a third detection line portion and a fourth detection line portion located in the main body area and a bonding electrode located in the auxiliary area. The third detection line portion extends along the edge of the main body area, and the fourth detection line portion is located on the side of the third detection line portion closer to the display area. The third detection line portion and the fourth detection line portion are not directly electrically connected in the main body area, but are respectively electrically connected to the bonding electrode to receive detection data signals.

[0019] In some examples, the crack detection line further includes a connecting portion located in the auxiliary region; the connecting portion is electrically connected to the bonding electrode, and the third detection line portion and the fourth detection line portion are respectively electrically connected to the connecting portion, thereby connecting to the bonding electrode.

[0020] In some examples, the plurality of sub-pixels includes a first sub-pixel and a second sub-pixel. The display substrate further includes: a first switching element and a second switching element located in the main body area, and a first data line and a second data line, which are respectively connected to the first sub-pixel and the second sub-pixel. The first switching element and the second switching element respectively include a control terminal, a first terminal, and a second terminal. The first terminal of the first switching element is partially electrically connected to the third detection line, and the second terminal of the first switching element is electrically connected to the first data line. The first terminal of the second switching element is partially electrically connected to the fourth detection line, and the second terminal of the second switching element is electrically connected to the second data line.

[0021] In some examples, the main body area is circular, elliptical, or rectangular in shape.

[0022] At least one embodiment of this disclosure also provides a display device, including the display substrate provided in any of the above embodiments. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention.

[0024] Figure 1 This is a schematic diagram of a display substrate provided in at least one embodiment of the present disclosure;

[0025] Figure 2A A schematic diagram of a display substrate provided for other embodiments of this disclosure;

[0026] Figure 2B for Figure 2A Enlarged schematic diagram of the central auxiliary area;

[0027] Figure 2C A schematic diagram of a display substrate provided for some embodiments of this disclosure;

[0028] Figure 3A for Figure 2A A partially enlarged schematic diagram;

[0029] Figure 3B This is an enlarged schematic diagram of an electrostatic discharge element provided in at least one embodiment of the present disclosure;

[0030] Figure 4A for Figure 3A A partially enlarged schematic diagram;

[0031] Figure 4B for Figure 4A A sectional view along section line B-B';

[0032] Figure 5 A schematic diagram of a display substrate provided in some embodiments of this disclosure;

[0033] Figure 6 A circuit diagram of an electrostatic discharge element provided for at least one embodiment of this disclosure;

[0034] Figure 7 A schematic diagram of a display panel provided in at least one embodiment of this disclosure; and

[0035] Figure 8 This is a schematic diagram of a display device provided for at least one embodiment of the present disclosure. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0037] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an,” “a,” or “the,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “including,” “comprising,” or “containing,” and similar terms mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. The terms “connected,” “linked,” or similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0038] Display panels are prone to cracking due to stress at their edges. These cracks can propagate from the periphery to the display area, affecting its functionality. To improve yield by timely crack detection, crack detection lines are typically incorporated into the display panel for panel crack detection. One end of the detection line receives the detection signal, while the other end is connected to a sub-pixel in the display area via a switching element to provide detection data signals. For example, if the crack detection line breaks, insufficient or no detection data signal may be written, which can be confirmed by observing the illumination status of the pixels in the display area, thus enabling crack detection.

[0039] When electrostatic discharge (ESD) occurs on the crack detection line, it can damage the switching components connected to the line, causing detection failure. Therefore, an ESD protection unit needs to be designed on the crack detection line.

[0040] With the increasing demand for narrow bezels in display panels, flexible display substrates have become widely used. By bending flexible substrates, non-display areas of the display panel can be bent to the back of the substrate, resulting in narrower bezels and increased screen-to-body ratio. For example, COP (Chip On PI) technology is widely used in display panel design, especially in electronic products such as mobile phones and watches. COP utilizes the bendable nature of flexible substrates (such as PI substrates) to bend the bonding area of ​​the panel, achieving a narrower bottom bezel and increasing screen-to-body ratio.

[0041] Figure 1 A schematic diagram of a display substrate provided in at least one embodiment of this disclosure is shown. For example... Figure 1 As shown, the display substrate 10 includes a main body region 11, a necking region 12, and an auxiliary region 13. The necking region 12 is located between the main body region 11 and the auxiliary region 13 and connects the two. Figure 1 The neck constriction region 12 is illustrated by a dashed line.

[0042] like Figure 1 As shown, the necking region 12 is rectangular or strip-shaped; the length direction of the necking region 12 is along the first direction D1, and the main body region 11, the necking region 12, and the auxiliary region 13 are connected sequentially along the second direction D2. The first direction D1 and the second direction D2 are different, for example, they are orthogonal.

[0043] The main body area 11 includes the display area (AA area) of the display substrate, that is, the necking area 12 and the auxiliary area 13 are both non-display areas of the display substrate. The main body area 11 also includes a non-display area located outside the display area, which may have traces such as power lines and signal lines.

[0044] The necking region 12 includes a bending region BA, which is configured to be bent to fold the auxiliary region 13 to the back of the main region 11, thereby increasing the screen-to-body ratio of the display area and achieving a narrow bezel display. For example, the bending region may be part or all of the necking region 12. For example, the bending axis of the bending region is along a first direction D1.

[0045] For example, the auxiliary area 13 includes a bonding area PBA, in which bonding electrodes are disposed. These bonding electrodes can be bonded to external circuitry to provide a signal source or driving circuitry for the display substrate. For example, there can be multiple bonding areas. For instance, the bonding electrodes can be bonded to a flexible printed circuit board (FPC) to provide power signals, detection signals, data signals, etc., to the display substrate. In other examples, the bonding electrodes can be bonded to an IC chip to provide driving signals to the display substrate. Figure 1 The bounding area BPA is schematically shown in the dashed box.

[0046] like Figure 1 As shown, the maximum size of the necking region 12 in the first direction D1 is smaller than the maximum size of the main body region 11 in the first direction D1, and also smaller than the maximum size of the auxiliary region 13 in the first direction D1.

[0047] For example, the shape of the main area can be circular, elliptical, or rectangular. Figure 1 As shown, the main body area is circular in shape. For example, this display substrate is used in small-sized wearable products; for example, this display substrate 10 can be used in a watch. For example, in the second direction D2, the size of the main body area 11 first increases and then decreases in the first direction D1.

[0048] For example, along the second direction D2, the size of the necking region 12 in the first direction D1 first decreases and then increases. In other examples, the size of the necking region 12 in the first direction D1 may remain substantially unchanged along the second direction D2.

[0049] For example, there is a chamfer at the connection between the necked area 12 and the main area 11 and / or the auxiliary area 13.

[0050] For example, the maximum size of the necked region 12 in the first direction D1 is 1 / 6 to 1 / 3, such as 1 / 5, of the maximum size of the main body region 11 in the first direction D1. The size of the necked region 12 in the first direction D1 is smaller than that of the main body region 11, so that the auxiliary region 13 can be blocked by the main body region 11 when it bends backward.

[0051] For example, in the second direction D2 and away from the necking region 12, the size (i.e., length) of the auxiliary region 13 gradually increases in the first direction D1. This allows the auxiliary region 13 to be effectively shielded by the main body region 11 while being bent to the back of the main body region 11, thus increasing the area of ​​the auxiliary region 13. This does not affect the appearance of the product while increasing the space for the auxiliary region circuit, facilitating circuit design. For example, the auxiliary region 13 is fan-shaped, including a trapezoidal region. The upper base of the trapezoidal region is connected to the necking region 12, and the length of the upper base of the trapezoidal region can be greater than or equal to the length of the base of the necking region 12. Figure 1 (The case where they are equal is shown in the diagram). The auxiliary area 13 may also include a rectangular area connected to the lower base of the trapezoid.

[0052] like Figure 1As shown, the display substrate 10 also includes a crack detection line 21 located in the non-display area of ​​the display substrate. For example, the crack detection line 21 extends along the edge of the display substrate 10, thereby enabling the detection of cracks at the substrate edge. For example, the crack detection line 21 extends from the main body region 11 through the necking region 12 to the auxiliary region 13. The portion of the crack detection line 21 in the main body region 11 at least partially surrounds or encloses the display region, thereby enabling crack detection of the entire edge of the main body region 11. One end of the crack detection line 21 is electrically connected to a bonding electrode 210 located in the bonding region BPA. The bonding electrode 210 is bonded to an external circuit to receive detection data signals.

[0053] The display substrate 10 also includes an electrostatic discharge element 211 electrically connected to the crack detection line 21, thereby providing electrostatic protection for the crack detection line. The number of the electrostatic discharge element 211 can be one or more.

[0054] The electrostatic discharge element 211 can be various forms of electrostatic discharge protection circuits, such as an RC filter circuit composed of capacitors and resistors. The specific implementation of the electrostatic discharge element is not limited in the embodiments disclosed herein.

[0055] For example, the electrostatic discharge element 211 includes a capacitor that can store static electricity generated on the crack detection line 21.

[0056] In the design of display substrates, how to set up the electrostatic discharge element is a problem that needs to be considered.

[0057] One design approach is to place the electrostatic discharge element 211 in the non-display area of ​​the main body region 11. However, in order to achieve a narrow bezel display, the bezel (non-display area) space of the main body region of the display substrate is limited, especially in small-sized wearable products. Therefore, placing the electrostatic discharge element 211 in the auxiliary area 13 is not conducive to achieving a narrow bezel display.

[0058] Another design approach is to place the electrostatic discharge element 211 in the necking region 12. However, as... Figure 1As shown, the connection between the necked-down region 12 and the main body region 11 or auxiliary region 13 has a certain curvature. During the manufacturing process of the display substrate, this connection needs to be cut and chamfered, resulting in greater stress at the necked-down region 12. Especially when the size of the necked-down region 12 in the first direction D1 is smaller than that of the main body region 11, the curvature is steeper, further increasing the cutting stress borne by the necked-down region 12. On the other hand, since there is a bending region BA in the necked-down region 12, the necked-down region 12 is also affected by bending stress. In this case, if the electrostatic discharge element 211 is placed in the necked-down region 12, it will increase the complexity of the film structure in the necked-down region 12. For example, the presence of the electrostatic discharge element will raise the film layer in the area, causing unevenness of the film layer, increasing the risk of film layer breakage in the necked-down region 12, which may lead to the breakage of the crack detection line 21, resulting in over-detection or failure of crack detection, reducing the detection rate and yield of the product. In some examples, the crack detection line 21 is set up to detect cracks in the main body area 11, thereby preventing cracks in the main body area 11 from affecting the display function of the display area AA. However, when the main body area 11 does not break but the necking area 12 breaks, the crack detection line 21 will also break, which will cause over-detection and reduce the effective detection rate.

[0059] At least one embodiment of this disclosure provides a display substrate, which includes a substrate, a crack detection line located on the substrate, and an electrostatic discharge element electrically connected to the crack detection line. The substrate includes a main region, an auxiliary region, and a necking region connecting the main region and the auxiliary region. The display area of ​​the display substrate is located within the main region. The crack detection line at least partially surrounds the display area and extends through the necking region to the auxiliary region. The electrostatic discharge element is located within the auxiliary region.

[0060] like Figure 1 As shown, the display substrate provided in at least one embodiment of this disclosure, by placing the electrostatic discharge element 211 of the crack detection line in the auxiliary area, on the one hand, avoids placing the electrostatic discharge element in the main body area, thereby helping to achieve a narrow bezel display; on the other hand, avoids placing the electrostatic discharge element in the necking area, thereby reducing the risk of film layer breakage in the necking area, and helps to improve product yield.

[0061] For example, the electrostatic discharge element 211 can be disposed in the trapezoidal or rectangular region of the auxiliary area 13. The length direction of the electrostatic discharge element 211 is parallel to any side of either the trapezoidal or rectangular region; that is, the length direction of the electrostatic discharge element 211 can be along the first direction D1 or the second direction D2, or it can intersect both the first direction D1 and the second direction D2. For example, the length direction of the electrostatic discharge element 211 is parallel to any waist of the trapezoidal region.

[0062] For example, the substrate is a flexible substrate, which can be formed from a plastic material with excellent heat resistance and bending resistance, such as polyimide (PI), polycarbonate (PC), polyethylene terephthalate (PET), polyethylene, polyacrylate, polyaryl compounds, polyetherimide, polyethersulfone, polyethylene glycol terephthalate (PET), polyethylene (PE), polypropylene (PP), polysulfone (PSF), polymethyl methacrylate (PMMA), cellulose triacetate (TAC), cyclic olefin polymers (COP), and cyclic olefin copolymers (COC).

[0063] For example, the display area AA has multiple sub-pixels (not shown), and the multiple sub-pixels are arranged in an array according to the first direction D1 and the second direction D2.

[0064] For example, each sub-pixel includes a light-emitting element and a pixel circuit that drives the light-emitting element to emit light. For example, this pixel circuit may be a 2T1C (i.e., two transistors and one capacitor) pixel circuit, a 4T2C, 5T1C, 7T1C, or an nTmC (n and m are positive integers) pixel circuit. Furthermore, in different embodiments, the pixel circuit may further include a compensation sub-circuit, which may be an internal or external compensation sub-circuit, and may include transistors, capacitors, etc. For example, depending on the need, the pixel circuit may further include a reset circuit, a light-emitting control sub-circuit, a detection circuit, etc.

[0065] For example, the display substrate 20 may also include control circuitry (not shown). This control circuitry may be configured to control a data driving circuitry to provide a data signal to the sub-pixel, and to control a gate driving circuitry to provide a scan signal to the sub-pixel. An example of this control circuitry is a timing control circuit (T-con). The control circuitry can take various forms, such as including a processor and a memory, the memory containing executable code, which the processor runs to perform the detection method described above.

[0066] For example, the processor can be a central processing unit (CPU) or other forms of processing device with data processing and / or instruction execution capabilities, such as a microprocessor, a programmable logic controller (PLC), etc.

[0067] For example, a storage device may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. Volatile memory may include, for example, random access memory (RAM) and / or cache memory. Non-volatile memory may include, for example, read-only memory (ROM), hard disk, flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium, and a processor may execute the functions expected by the program instructions. Various application programs and various data may also be stored in the computer-readable storage medium.

[0068] For example, the display substrate 10 is an organic light-emitting diode display substrate; correspondingly, the light-emitting element is an organic light-emitting diode.

[0069] For example, such as Figure 1 As shown, the display substrate 10 also includes a first power line 22 and a second power line 23 located in the non-display area. The first power line 22 and the second power line 23 are respectively configured to provide a first power supply voltage VDD and a second power supply voltage VSS to a plurality of sub-pixels. The first power supply voltage is higher than the second power supply voltage.

[0070] like Figure 1 As shown, the first power line 22 and the second power line 23 are respectively arranged at least partially around the display area AA and extend through the necking area 12 to the auxiliary area 13. The first power line 22 is electrically connected to the bonding electrode 220 located in the bonding area BPA to receive the first power supply voltage, thereby delivering the first power supply voltage to the sub-pixel of the display area; the second power line 23 is connected to the bonding electrode 230 located in the bonding area BPA to receive the second power supply voltage, thereby delivering the second power supply voltage to the sub-pixel of the display area.

[0071] For example, such as Figure 1 As shown, the first power line 22 includes a power line body portion 221 located in the main body area 11 and a power line extension portion 222 located outside the main body area 11. For example, the power line body portion 221 is disposed completely around the display area AA and is electrically connected to the power line extension portion 222. For example, the power line extension portion 222 extends from the necking area 12 to the auxiliary area 13, thereby leading to the bonding electrode 220 located in the bonding area BPA.

[0072] For example, such as Figure 1As shown, the second power line 23 includes a power line body portion 231 located in the main body region 11 and a power line extension portion 232 located outside the main body region 11. For example, the power line body portion 231 is Ω-shaped and is disposed around the display area AA. Its two ends extend along both sides of the substrate to be electrically connected to the power line extension portion 232. The power line extension portion 232 extends from the necking region 12 to the auxiliary region 13, thereby leading to the bonding electrode 230 located in the bonding region BPA.

[0073] For example, such as Figure 1 As shown, the second power line 23 is located on the side of the first power line 22 closer to the edge of the substrate.

[0074] For example, in the main body region 11, at least a portion of the crack detection line 21 is closer to the edge of the main body region 11 than the first power line 22 and the second power line 23, thereby facilitating crack detection at the substrate edge. For example, cracks typically originate at the substrate edge and propagate from the substrate edge into the substrate interior.

[0075] For example, for clarity, Figure 1 Only one loop of the crack detection line 21 is shown in the diagram; however, this is not intended to limit the scope of this disclosure. For example, the crack detection line 21 can be wound back and forth along the edge of the substrate, thereby increasing the detection area and improving detection sensitivity. For example, in a direction perpendicular to the substrate, the crack detection line 21 at least partially overlaps with the second power line 23.

[0076] For example, such as Figure 1 As shown, the electrostatic discharge element 211 includes a first end and a second end. The first end is electrically connected to the crack detection line 21, and the second end is electrically connected to either the first power line 22 or the second power line 23 to receive a fixed voltage, thereby reducing the interference of the electrostatic discharge element 211 on the data signal on the crack detection line 21. For example, the electrostatic discharge element 211 includes a capacitor, and the first and second capacitor electrodes of the capacitor respectively charge the first and second ends of the electrostatic discharge element.

[0077] Figure 1 The locations of the crack detection line 21, the first power line 22, and the second power line 23 are only schematically shown in the diagram; however, this is not intended to limit the scope of this disclosure.

[0078] Figure 2A This is a schematic diagram of a display substrate provided in some other embodiments of this disclosure. Figure 2B It shows Figure 2A An enlarged schematic diagram of the auxiliary area of ​​the display substrate. Figure 2C This is a schematic diagram of a display substrate provided in some embodiments of the present disclosure, wherein... Figure 2CThe diagram mainly shows the necking region 12 and the auxiliary region 13 of the display substrate.

[0079] For example, such as Figure 2A-2B As shown, the auxiliary region 13 includes a trapezoidal region 13a and a rectangular region 13b connected in the second direction D2. Figure 2B The boundary line between the trapezoidal region 13a and the rectangular region 13b is schematically shown by dashed lines. One side 131 of the rectangular region 13b is connected to one side 133 of the trapezoidal region 13a. The upper base 132 of the trapezoidal region 13a is connected to the necking region 12, and the rectangular region 13b is located on the side of the trapezoidal region 13a away from the necking region 12. The electrostatic discharge element can be disposed in either the trapezoidal region 13a or the rectangular region 13b.

[0080] like Figure 2A and 2C As shown, the electrostatic discharge element 211 is located in the rectangular region 13b. This arrangement can increase the distance between the electrostatic discharge element 211 and the necking region 12, thereby reducing the impact of the electrostatic discharge element 211 on the necking region 12, thus reducing the risk of film breakage in the necking region 12, and avoiding over-detection or failure caused by film breakage.

[0081] For example, the length direction of the electrostatic discharge element is parallel to either side of the trapezoidal region 13a or the rectangular region 13b.

[0082] For example, such as Figure 2A , 2C and Figure 3A As shown, in the direction parallel to the substrate surface, in the auxiliary region 13, the electrostatic discharge element 211 is located between the first power line 22 and the second power line 23; in other words, the orthographic projection of the electrostatic discharge element 211 on the substrate is located between the orthographic projection of the first power line 22 on the substrate and the orthographic projection of the second power line 23 on the substrate.

[0083] For example, such as Figure 2C As shown, in the auxiliary area 13, the first power line 22 includes a power line portion 225 parallel to the second direction D2, and the second power line 23 includes a power line portion 235 parallel to the second direction D2. There is a gap between the power line portion 225 and the power line portion 235. The electrostatic discharge element 211 is located in the gap and is electrically connected to the second power line 23.

[0084] Since the first power line 22 and the second power line 23 are configured to provide high-level voltage and low-level voltage respectively, a large gap exists between the first power line 22 and the second power line 23 to avoid mutual interference between their signals. Placing the electrostatic discharge element 211 between the first power line 22 and the second power line 23 can improve space utilization and optimize the layout design.

[0085] For example, the first power line 22 and the second power line 23 are disposed on the same layer and are insulated from each other; at least a portion of the electrostatic discharge element is disposed on the same layer as the first power line and the second power line and is located between the first power line 22 and the second power line 23.

[0086] It should be noted that the term "same-layer arrangement" as used in this disclosure refers to, for example, multiple structures / patterns prepared from the same material layer and thus located in the same layer, rather than limiting them to being located on the same horizontal plane.

[0087] Figure 3A It shows Figure 2A and Figure 2C A partially enlarged schematic diagram is shown, with the electrostatic discharge component indicated by a dashed box. For example... Figure 2A , 2C and Figure 3A As shown, the electrostatic discharge element 211 is disposed along one side 131 of the rectangular region 13b in the auxiliary region 13, and both the electrostatic discharge element 211 and the side 131 extend along the second direction D2.

[0088] For example, the first power line 22 and the second power line 23 extend from the auxiliary area 13 through the necking area 12 to the main body area 11, and then return to the auxiliary area 13 via the necking area 12 after passing around the display area AA; for example, the first power line 22 and the second power line 23 are respectively Ω-shaped.

[0089] For example, such as Figure 2A As shown, the second power line 23 is closer to the edge of the substrate than the first power line 22, meaning the first power line 22 is closer to the display area AA. This arrangement optimizes wiring. For example, in a display substrate, pixel electrodes, such as cathodes, that receive the second power supply voltage VSS in the display area are typically arranged across the entire surface, making it easier to form an electrical connection with the second power line. Setting the first power line 22 closer to the display area than the second power line 23 facilitates the connection between the first power line 22 and the sub-pixels in the display area.

[0090] For example, such as Figure 2A As shown, in the auxiliary region 13, at least a portion of the crack detection line 21 is closer to the edge of the auxiliary region 13 than the first power line 22 and the second power line 23, thereby facilitating crack detection at the substrate edge. For example, cracks typically originate at the substrate edge and propagate from the substrate edge into the substrate interior.

[0091] Reference Figure 2A , Figure 2C and Figure 3A The crack detection line 21 located in the auxiliary area 13 includes a first detection line portion 61 and a second detection line portion 62. The first detection line portion 61 extends along the edge of the substrate, from the side of the second power line 23 away from the first power line 22 to the space between the second power line 23 and the first power line 22, and is electrically connected to the first end of the electrostatic discharge element 211 through a via 501. The second detection line portion 62 extends from the side of the first power line 22 away from the second power line 23 to the space between the second power line 23 and the first power line 22, and is electrically connected to the first end of the electrostatic discharge element 211 through a via 502, thereby electrically connecting the first detection line portion 61 and the second detection line portion 62 of the crack detection line.

[0092] The first power line 22 and the second power line 23 each include a first power line portion and a second power line portion that are parallel to the second direction D2, and the electrostatic discharge element 211 is located between the first power line portion and the second power line portion.

[0093] Reference Figure 2A and Figure 3A The second end of the electrostatic discharge element 211 is electrically connected to the second power line 23 through the via 503.

[0094] For example, the electrostatic discharge element 211 includes a capacitor, which includes a first capacitor electrode 51 and a second capacitor electrode 52. The first and second capacitor electrodes serve as the first and second ends of the electrostatic discharge element 211, respectively. The first capacitor electrode 51 is electrically connected to the crack detection line 21 through vias 501 and 502, and the second capacitor electrode is electrically connected to the first power line 22 or the second power line 23. Figure 2A Figure 3 shows the second capacitor electrode 52 being electrically connected to the second power line 23 through a via 503.

[0095] For example, the first capacitor electrode 51 is disposed on the same layer as the first power line 22 and the second power line 23, and is located between the first power line and the second power line.

[0096] For example, the second capacitor electrode 52 is located on the side of the first capacitor electrode 51 close to the substrate, and in a direction perpendicular to the substrate, the first capacitor electrode and the second capacitor electrode at least partially overlap.

[0097] Figure 3B An enlarged schematic diagram of the electrostatic discharge element is shown; for clarity, Figure 3BOnly the first capacitor electrode 51 and the second capacitor electrode 52 of the electrostatic discharge element 211 are shown in the reference. Figures 3A-3B The first capacitor electrode 51 includes a U-shaped electrode 51a and two comb-shaped electrodes 51b respectively connected to two sides of the U-shaped electrode 51a. The U-shaped electrode 51a and the two comb-shaped electrodes 51b are, for example, an integral structure. Each comb-shaped electrode 51b includes a comb handle 51b1 and a plurality of comb teeth 51b2 extending from the comb handle 51b1.

[0098] For example, the second capacitor electrode 52 is at least partially surrounded by the U-shaped electrode 51a, and in a direction perpendicular to the substrate, the second capacitor electrode 52 at least partially overlaps with the two comb-shaped electrodes 51b. For example, the second capacitor electrode 52 is annular.

[0099] Figure 4A It shows Figure 3A An enlarged schematic diagram of region A, which involves the two comb teeth 51b2 of the comb electrode 51b near the first detection line portion 61 of the crack detection line; Figure 4B It shows Figure 4A A sectional view along section line B-B'.

[0100] For example, such as Figure 3A and 4A As shown in Figure 4B, the electrostatic discharge element 211 further includes a third capacitor electrode 53. For example, in a direction perpendicular to the substrate, the third capacitor electrode 53 is located on the side of the second capacitor electrode 52 away from the first capacitor electrode 51, and is electrically connected to the first capacitor electrode through a via 504. Thus, the electrostatic discharge element 211 forms a structure of two capacitors connected in parallel, which helps to increase the capacitance value and improve the electrostatic protection performance.

[0101] For example, the third capacitor electrode 53 includes a conductive semiconductor material. The semiconductor material includes, but is not limited to, silicon-based materials (amorphous silicon a-Si, polycrystalline silicon p-Si, etc.), metal oxide semiconductors (IGZO, ZnO, AZO, IZTO, etc.), and organic materials (hexathiophene, polythiophene, etc.).

[0102] For example, such as Figure 4B As shown, the crack detection line 21 is located between the first capacitor electrode 51 and the second capacitor electrode 52 in a direction perpendicular to the substrate 101.

[0103] In other examples, such as Figure 5 As shown, the electrostatic discharge element 211 can also be arranged along one side of the trapezoidal region of the auxiliary area, in conjunction with the reference. Figure 2BThe side, for example, is the upper base 132 of the trapezoidal region 13a, which is parallel to the first direction D1. The first power line 22 and the second power line 23 respectively include a third power line portion and a fourth power line portion parallel to the first direction, and the electrostatic discharge element 211 is located between the third power line portion and the fourth power line portion.

[0104] For example, the trapezoidal region 13a also includes a side 133 that intersects both the first direction D1 and the second direction D2, and connects the side 131 to the upper bottom edge 132. In other examples, the electrostatic discharge element 211 may also be disposed along the side 133.

[0105] For example, the electrostatic discharge element 211 can also be considered as including multiple transistors 30. The second capacitor electrode 52 can be considered as the gate of the transistor 30, and the comb 51b1 of the U-shaped electrode 51a and the comb-shaped electrode 51b can be considered as the first and second electrodes of the transistor, respectively. The third capacitor electrode 53 serves as the active layer of the transistor. The portion of the active layer that is shielded by the comb 51b2 serves as the channel region of the transistor. The portion that is not shielded by the second capacitor electrode 52 (i.e., the gate) is conductiveized in the fabrication process (e.g., gate self-alignment process) to form the source and drain contact regions of the transistor, and is electrically connected to the first and second electrodes of the transistor, respectively.

[0106] For example, the first terminals of multiple transistors are electrically connected to each other, and the second terminals of multiple transistors are electrically connected to each other, thus multiple transistors are connected in parallel.

[0107] like Figure 4A As shown, each transistor 30 corresponds to a comb tooth 51b2, which electrically connects the first and second terminals of the corresponding transistor, thereby forming a source-drain short-circuit structure. Figure 6 This is a circuit diagram of an electrostatic discharge element provided in at least one embodiment of the present disclosure. Figure 6 The diagram shows the connection of the plurality of transistors 30.

[0108] It should be noted that the transistors used in the embodiments of this disclosure can all be thin-film transistors, field-effect transistors, or other switching devices with the same characteristics. The embodiments of this disclosure all use thin-film transistors as an example for illustration. The source and drain of the transistors used here can be structurally symmetrical, so their source and drain can be structurally indistinguishable. In the embodiments of this disclosure, to distinguish the two terminals of the transistor other than the gate, one terminal is directly described as the first terminal, and the other as the second terminal.

[0109] For example, the materials of the first capacitor electrode 51, the second capacitor electrode 52 and the crack detection line 21 may include gold (Au), silver (Ag), copper (Cu), aluminum (Al), molybdenum (Mo), magnesium (Mg), tungsten (W) and alloys composed of the above metals; or conductive metal oxide materials, such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), aluminum zinc oxide (AZO), etc.

[0110] The following will combine Figure 2A The detection circuit shown is an exemplary illustration of the crack detection principle of the display substrate provided in the embodiments of this disclosure; however, it is not intended to limit the scope of this disclosure.

[0111] like Figure 2A As shown, the portion of the crack detection line 21 located in the main body region 11 includes a third detection line portion 63 and a fourth detection line portion 64. The third detection line portion 63 is located on the side of the fourth detection line portion 64 closer to the edge of the substrate. The third detection line portion 63 and the fourth detection line portion 64 are not directly electrically connected, but are respectively electrically connected to the bonding electrode 210.

[0112] For example, such as Figure 2A and 2C As shown, the crack detection line 21 includes a connection portion 65 that is directly connected to the bonding electrode 210. The third detection line portion 63 is electrically connected to the connection portion 65 through the first detection line portion 61 and the second detection line portion 62. For example, the third detection line portion 63 is electrically connected to the first detection line portion 61, the first detection line portion 62 is electrically connected to the second detection line portion 62 through the electrostatic discharge element 211, and the second detection line portion 62 is electrically connected to the connection portion 65, thereby connecting to the bonding electrode 210.

[0113] For example, the fourth detection line portion 64 is electrically connected to the connection portion 65 via a connecting line 64'. For example, the connecting line 64' and the connection portion 65 are integrally formed.

[0114] Since the third detection line portion 63 and the fourth detection line portion 64 are electrically connected to the connecting portion 65 respectively, if the edge of the display substrate breaks, causing the third detection line portion 63 to break, it will not affect the normal transmission of the detection data signal on the fourth detection line portion 64.

[0115] In this embodiment, the fourth detection line portion 64 is electrically connected to the connecting portion 65 via a connecting line 64', thereby connecting to the same bonding electrode 210 as the third detection line portion 63. This allows the first ends of the first switching element 31 and the second switching element 32 to receive the same detection data signal; however, this is not intended to limit the scope of this disclosure. In other embodiments, the fourth detection line portion 64 may be connected to different bonding electrodes, and the fourth detection line portion 64 may not be part of the crack detection line 21, but rather a separate signal line. For example, when performing crack detection on a display substrate, the bonding electrode connected to the fourth detection line portion 64 and the bonding electrode 210 connected to the third detection line portion 63 can be loaded with the same data detection signal, thereby allowing the first ends of the first switching element 31 and the second switching element 32 to receive the same detection data signal.

[0116] For example, such as Figure 2A As shown, the third detection line portion 63 extends along the substrate and into the auxiliary area 13, where it is electrically connected to the first detection line portion 61. For example, at least a portion of the third detection line portion 63 is located on the side of the second power line 23 away from the display area AA. For example, the third detection line portion 63 can be wound back and forth along the edge of the substrate, eventually extending to the opposite edge of the substrate, roughly forming an Ω-shaped profile. This reciprocating winding of the crack detection line 21 can increase the detection area, thereby improving detection sensitivity. For example, as... Figure 2A As shown, during the reciprocating winding process, the third detection line portion 63 can extend from the outside of the second power line 23 (the side near the edge of the substrate) to the inside of the second power line, so that in the direction perpendicular to the substrate, the third detection line portion 63 at least partially overlaps with the second power line 23.

[0117] For example, the fourth detection line portion 64 is located on the side of the third detection line portion 63, the first power line 22, and the second power line 23 closest to the display area AA. For example, the fourth detection line portion 64 extends at least partially around the display area AA. Figure 2A As shown, the fourth detection line portion 64 is formed as a ring surrounding the display area AA.

[0118] For example, the display substrate 10 includes a plurality of switching elements, which are arranged, for example, around the display area AA. Each switching element includes a control terminal, a first terminal, and a second terminal, which can be turned on or off in response to a control signal received from the control terminal. For example, the switching element can be implemented using a transistor, such as a thin-film transistor, a field-effect transistor, or other switching devices with the same characteristics.

[0119] For example, such as Figure 2AAs shown, the display substrate also includes a signal control line 24, which, for example, surrounds the display area and is electrically connected to the control terminals of multiple switching elements, thereby controlling the on or off state of the multiple switching elements. This signal control line is electrically connected to a bonding electrode 240 located in the bonding area to receive control signals.

[0120] For example, the display substrate also includes multiple data lines that are connected one-to-one with multiple columns of sub-pixels, with each data line connected to a corresponding column of sub-pixels to provide data signals.

[0121] For example, multiple data lines correspond one-to-one with multiple switching elements. The first end of each switching element is connected to the crack detection line 21 to receive the detection data signal, and the second end is electrically connected to a corresponding data line. The switching element transmits the detection data signal to the data line in response to the voltage at the control end. The detection data signal is used for crack detection.

[0122] like Figure 2A As shown, a portion of the switching elements, namely the first end of the first switching element 31, is electrically connected to the outer third detection line portion 63 to receive the detection data signal on the crack detection line; another portion of the switching elements, namely the first end of the second switching element 32, is electrically connected to the inner fourth detection line portion 64 to receive the detection data signal. The second end of the first switching element 31 is electrically connected to the first data line 41, thereby providing the detection data signal to the first sub-pixel P1 connected to the first data line 41; the second end of the second switching element 32 is electrically connected to the second data line 42, thereby providing the detection data signal to the second sub-pixel P2 connected to the second data line.

[0123] When the edge of the substrate breaks, the crack detection line located there also breaks, causing the detection data signal to be unable to be fully transmitted or even unable to be transmitted to the first end of the first switching element 31. This causes a column of first sub-pixels P1 connected to the first data line 41 to light up, indicating an abnormality, and thus the occurrence of a crack can be determined.

[0124] For example, when a crack occurs at the edge of the substrate, the third detection line portion 63 located at the edge of the substrate breaks, causing the detection data signal to be insufficiently transmitted or even unable to be transmitted to the first end of the first switching element 31. This results in the lighting of a column of first sub-pixels P1 connected to the first data line 41, indicating an abnormality. However, the transmission of the detection data signal on the fourth detection line portion 64 is not affected. For example, the second sub-pixel P2 connected to the second data line 42 can be lit normally, for example, displaying a black state, thus providing a background pattern for comparison.

[0125] For example, the detection data signal is a black data signal. The normal area is displayed as black, and the abnormal area (such as the area of ​​the first sub-pixel of the column) is displayed as a bright line or a slightly dark line, so that the occurrence of cracks can be determined.

[0126] For example, the number of first switching elements 31 is less than the number of second switching elements 32, thereby improving contrast. Figure 2A As shown, there are two first switching elements 31, for example, arranged symmetrically with respect to the axis of symmetry of the second direction D2 in the display substrate.

[0127] At least one embodiment of this disclosure also provides a display panel including any of the above-described display substrates 10. For example, the display panel is an OLED display panel, and correspondingly, the display substrate 10 it includes is an OLED display substrate. The display substrate 10 may or may not include light-emitting elements; that is, the light-emitting elements may be formed in a panel factory after the display substrate 10 is completed. In the case where the display substrate 10 itself does not include light-emitting elements, the display panel provided in the embodiments of this disclosure further includes light-emitting elements in addition to the display substrate 10.

[0128] like Figure 7 As shown, for example, the display panel 50 also includes an encapsulation layer 801 and a cover plate 802 disposed on the display substrate 10. The encapsulation layer 801 is configured to seal the light-emitting elements on the display substrate 10 to prevent external moisture and oxygen from penetrating into the light-emitting elements and driving sub-circuits and causing damage to the devices. For example, the encapsulation layer 801 includes an organic thin film or a structure including alternating layers of inorganic thin films, organic thin films, and inorganic thin films. For example, a water-absorbing layer (not shown) may also be disposed between the encapsulation layer 801 and the display substrate 10, configured to absorb residual moisture or sol from the light-emitting elements in the early manufacturing process. The cover plate 802 is, for example, a glass cover plate or a flexible cover plate. For example, the cover plate 802 and the encapsulation layer 801 can be an integral structure.

[0129] At least one embodiment of this disclosure also provides a display device 60, such as Figure 8 As shown, the display device 60 includes any of the above-mentioned display substrate 10 or display panel 50. The display device in this embodiment can be any product or component with display function, such as a monitor, OLED panel, OLED TV, electronic paper, mobile phone, tablet computer, laptop computer, digital photo frame, or navigator.

[0130] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the scope of protection of the present invention, which is determined by the appended claims.

Claims

1. A display substrate, comprising: A substrate includes a main region, an auxiliary region, and a necking region connecting the main region and the auxiliary region. The main region, the necking region, and the auxiliary region are an integral structure, wherein the display area of ​​the display substrate is located within the main region. Crack detection lines, at least partially surrounding the display area and extending through the necking region to the auxiliary area; and An electrostatic discharge element electrically connected to the crack detection line; Wherein, the length direction of the necking region is parallel to the first direction, the main body region, the necking region and the auxiliary region are connected in the second direction, and the first direction intersects the second direction; The maximum size of the necking region in the first direction is smaller than the size of the main body region in the first direction, and the maximum size of the necking region in the first direction is smaller than the maximum size of the auxiliary region in the first direction; The electrostatic discharge element is located in the auxiliary region of the substrate. The crack detection line is connected to the same bonding electrode located in the auxiliary area to receive data detection signals.

2. The display substrate as claimed in claim 1, wherein, The necking region includes a bending region configured to be bent to bend the auxiliary region to the back of the main body region.

3. The display substrate as described in claim 1, wherein, The ratio of the maximum size of the necking region in the first direction to the maximum size of the main body region in the first direction is in the range of 1 / 6 to 1 / 3.

4. The display substrate as claimed in claim 1, wherein, Along the second direction and away from the necking region, the size of the auxiliary region gradually increases in the first direction.

5. The display substrate as claimed in claim 1, wherein, The auxiliary area includes a trapezoidal area and a rectangular area connected in the second direction, wherein the upper base of the trapezoidal area is connected to the necking area; The electrostatic discharge element is located in the trapezoidal region or the rectangular region.

6. The display substrate as claimed in claim 5, wherein, The length direction of the electrostatic discharge element is parallel to either side of the trapezoidal region or the rectangular region.

7. The display substrate as described in any one of claims 1-6, further comprising a first power line, a second power line, and a plurality of sub-pixels located in the display area. in, The first power line and the second power line are respectively disposed at least partially around the display area and extend through the necking area to the auxiliary area, and are respectively configured to provide a first power supply voltage and a second power supply voltage to the plurality of sub-pixels, wherein the first power supply voltage is higher than the second power supply voltage; Within the auxiliary area, the electrostatic discharge element is located between the first power line and the second power line.

8. The display substrate as claimed in claim 7, wherein, The first power line and the second power line are disposed on the same layer and are insulated from each other; At least a portion of the electrostatic discharge element is disposed on the same layer as the first power line and the second power line and is located between the first power line and the second power line.

9. The display substrate as claimed in claim 7, wherein, The electrostatic discharge element includes a first end and a second end. The first end of the electrostatic discharge element is electrically connected to the crack detection line, and the second end of the electrostatic discharge element is electrically connected to the first power line or the second power line.

10. The display substrate as claimed in claim 9, wherein, The crack detection line includes a first detection line portion and a second detection line portion located in the auxiliary area. The first detection line extends from the side of the first power line away from the second power line to between the first power line and the second power line, and is electrically connected to the first end of the electrostatic discharge element. The second detection line extends from the side of the second power supply away from the first power line to between the first power line and the second power line, and is electrically connected to the first end of the electrostatic discharge element. The first end of the electrostatic discharge element electrically connects the first detection line portion and the second detection line portion.

11. The display substrate as claimed in claim 9, wherein, The electrostatic discharge element includes a capacitor, which includes a first capacitor electrode and a second capacitor electrode, and the first capacitor electrode and the second capacitor electrode respectively serve as the first end and the second end of the electrostatic discharge element.

12. The display substrate as claimed in claim 11, wherein, Relative to the substrate, the first capacitor electrode is disposed on the same layer as the first power line and the second power line, and is located between the first power line and the second power line; The second capacitor electrode is located on the side of the first capacitor electrode that is close to the substrate, and in a direction perpendicular to the substrate, the first capacitor electrode and the second capacitor electrode at least partially overlap.

13. The display substrate as claimed in claim 11, wherein, In a direction perpendicular to the substrate, the crack detection line is located between the layer containing the first capacitor electrode and the layer containing the second capacitor electrode.

14. The display substrate as claimed in claim 11, wherein, The first capacitor electrode includes a U-shaped electrode and two comb-shaped electrodes respectively connected to two sides of the U-shaped electrode; The second capacitor electrode is at least partially surrounded by a U-shaped electrode, and in a direction perpendicular to the substrate, the second capacitor electrode overlaps at least partially with the two comb-shaped electrodes.

15. The display substrate as claimed in claim 9, wherein, The electrostatic discharge element includes multiple transistors. Each of the plurality of transistors includes a gate, a first terminal, and a second terminal, wherein the first terminal and the second terminal of each transistor are electrically connected and serve as the first terminal of the electrostatic discharge element; The gate of each transistor serves as the second terminal of the electrostatic discharge element.

16. The display substrate as claimed in claim 7, wherein, The crack detection line includes a third detection line portion and a fourth detection line portion located in the main body area. The third detection line extends along the edge of the main body area, and the fourth detection line is located on the side of the third detection line closer to the display area. The third and fourth detection lines are not directly electrically connected in the main body area, but are respectively electrically connected to the bonding electrode to receive detection data signals.

17. The display substrate as claimed in claim 16, wherein, The crack detection line also includes a connecting portion located in the auxiliary area; The connecting portion is electrically connected to the bonding electrode, and the third detection line portion and the fourth detection line portion are respectively electrically connected to the connecting portion, thereby connecting to the bonding electrode.

18. The display substrate as claimed in claim 16, wherein, The plurality of sub-pixels includes a first sub-pixel and a second sub-pixel, and the display substrate further includes: The first and second switching elements located in the main body area, and The first data line and the second data line are respectively connected to the first sub-pixel and the second sub-pixel; The first switching element and the second switching element respectively include a control terminal, a first terminal, and a second terminal. The first end of the first switching element is electrically connected to the third detection line, and the second end of the first switching element is electrically connected to the first data line. The first end of the second switching element is electrically connected to the fourth detection line, and the second end of the second switching element is electrically connected to the second data line.

19. The display substrate as claimed in claim 1, wherein, The main body area is circular, elliptical, or rectangular in shape.

20. A display device comprising a display substrate as described in any one of claims 1-19.

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