Display substrate and display device

Abstract

The present disclosure provides a display substrate and a display device, in which a plurality of data cables (130) are configured to supply data signals to a plurality of pixel driving columns (220), the plurality of pixel driving columns (220) including a plurality of first pixel driving columns (220A) and a plurality of second pixel driving columns (220B), the pixel driving circuits (120) in the first pixel driving columns (220A) are connected to first light-emitting elements (151) in a normal display area (114), and some of the pixel driving circuits (120) in the second pixel driving columns (220B) are connected to first light-emitting elements (151) in a transparent display area (112) via a plurality of anode connecting cables (140). The display substrate (100) is connected to the second light-emitting element (152), and further includes a first transmission cable (171) and a second transmission cable (172), the first transmission cable (171) and the second transmission cable (172) being connected to the cathode of the first light-emitting element (151) and transmitting a first power supply voltage, the first transmission cable (171) and the second transmission cable (172) being connected via a first via-hole connection structure, and the orthogonal projection of the first via-hole connection structure on the base substrate (110) does not overlap with the orthogonal projection of the multiple anode connection cables (140) on the base substrate (110). This improves the display quality of the display substrate and reduces the risk of breakage of the anode connection cables.

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This application claims priority to a Chinese patent application filed on August 31, 2022, bearing application number 202211059440.5, the disclosure of which is incorporated herein by reference as part of this application.

[0002] The embodiments of the present disclosure relate to a display substrate and a display device. [Background technology]

[0003] With the continuous development of display technology, the requirements for screen-to-body ratio of electronic products such as smartphones are getting higher and higher, so the Full Display with Camera (FDC) design has gradually become a research hotspot for major manufacturers.

[0004] The under-screen camera design involves setting a transparent display area in the display area of ​​the display panel, which can both display and transmit light. By installing a photosensitive device such as a camera in the transparent display area of ​​the display panel, a large screen-to-body ratio can be achieved, and at the same time, functions such as photography and face recognition can be realized. Summary of the Invention [Means for solving the problem]

[0005] Based on the under-screen camera design and the realization of a narrow frame, in order to further reduce the load on the power supply voltage (VSS) and improve image quality, an embodiment of the present disclosure provides a display substrate and a display device, the display substrate including a base substrate, a plurality of pixel driving circuits, a plurality of data cables, and a plurality of anode connecting cables, the base substrate including a transparent display area and a normal display area surrounding the transparent display area, the plurality of pixel driving circuits located in the normal display area and arranged in an array along a first direction and a second direction to form a plurality of pixel driving rows and a plurality of pixel driving columns, each pixel driving row extending along the first direction and each pixel driving column extending along the second direction, the plurality of data cables extending along the second direction and configured to supply data signals to the plurality of pixel driving columns, the normal display area including a first light-emitting element, the transparent display area including a second light-emitting element, the plurality of pixel driving columns including a plurality of first pixel driving columns and a plurality of second pixel driving columns, the first pixel driving circuits The pixel driving circuit in the driving column is connected to the first light-emitting element, and a portion of the pixel driving circuit in the second pixel driving column is connected to the second light-emitting element via a plurality of anode connecting cables. The display substrate further includes a first transmission cable and a second transmission cable, the first transmission cable extending along a first direction and the second transmission cable extending along a second direction, the first transmission cable and the second transmission cable being disposed on different layers. The first transmission cable and the second transmission cable are connected to the cathodes of the first light-emitting elements and configured to transmit a first power supply voltage. The first transmission cable and the second transmission cable are connected via a first via hole connecting structure, and the orthogonal projection of the first via hole connecting structure on the base substrate does not overlap with the orthogonal projection of the plurality of anode connecting cables on the base substrate. This reduces the load on the signal cable for transmitting the first power supply voltage and thereby improves display image quality, assuming the implementation of an under-screen camera design. Meanwhile, the display substrate also reduces the risk of breakage of the anode connecting cables.

[0006] At least one embodiment of the present disclosure provides a display substrate, the display substrate including: a base substrate including a transparent display area and a normal display area surrounding the transparent display area; and a plurality of pixel driving circuits located in the normal display area, arranged in an array along a first direction and a second direction, forming a plurality of pixel driving rows and a plurality of pixel driving columns, each of the pixel driving rows extending along the first direction and each of the pixel driving columns extending along the second direction, a plurality of pixel driving circuits, a plurality of data cables extending along the second direction and configured to supply data signals to the plurality of pixel driving columns, and a plurality of anode connecting cables, the normal display area including first light-emitting elements, the transparent display area including second light-emitting elements, the plurality of pixel driving columns including a plurality of first pixel driving columns and a plurality of second pixel driving columns, the pixel driving circuits in the first pixel driving columns being connected to a front electrode of the first light-emitting element, the transparent display area including second light-emitting elements, the plurality of pixel driving columns including a plurality of first pixel driving columns and a plurality of second pixel driving columns, the pixel driving circuits in the first pixel driving columns being connected to a front electrode of the first light-emitting element, the plurality of pixel driving circuits being connected to a front electrode of the first light-emitting element, the plurality of pixel driving columns ... a first light-emitting element connected to the first substrate, and a portion of the pixel driving circuit in the second pixel driving column connected to the second light-emitting element via the plurality of anode connecting cables; the display substrate further includes a first transmission cable and a second transmission cable, the first transmission cable extending along the first direction and the second transmission cable extending along the second direction, the first transmission cable and the second transmission cable being provided on different layers, the first transmission cable and the second transmission cable being connected to the cathode of the first light-emitting element and configured to transmit a first power supply voltage; the first transmission cable and the second transmission cable being connected via a first via hole connecting structure, and an orthogonal projection of the first via hole connecting structure on the base substrate does not overlap with an orthogonal projection of the plurality of anode connecting cables on the base substrate.

[0007] For example, in a display substrate provided by one embodiment of the present disclosure, the display substrate further includes a third transmission cable and a fourth transmission cable, the third transmission cable and the fourth transmission cable are located in the normal display area, the third transmission cable extends along the first direction, and the fourth transmission cable extends along the second direction, one end of the third transmission cable is connected to the data cable, and the other end of the third transmission cable is connected to the fourth transmission cable.

[0008] For example, in a display substrate provided by an embodiment of the present disclosure, the third transmission cable and the first transmission cable are provided on the same layer.

[0009] For example, in a display substrate provided by an embodiment of the present disclosure, the fourth transmission cable and the second transmission cable are provided on the same layer.

[0010] For example, in a display substrate provided by one embodiment of the present disclosure, the display substrate further includes a connection cable segment that is arranged in the same layer as the third transmission cable and is insulated from each other, and both the connection cable segment and the third transmission cable overlap with an imaginary line extending along the first direction, and the connection cable segment connects multiple second transmission cables arranged along the first direction.

[0011] For example, in a display substrate provided by an embodiment of the present disclosure, in at least one of the pixel driving columns, both the second transmission cable and the fourth transmission cable overlap with an imaginary line extending along the second direction and are insulated from each other.

[0012] For example, in a display substrate provided by one embodiment of the present disclosure, the normal display area includes a first sub-display area and a second sub-display area arranged in the first direction, and the data cable located at the edge of the first sub-display area is connected to the fourth transmission cable located at the first sub-display area via the third transmission cable, and the data cable located at the edge of the second sub-display area is connected to the fourth transmission cable located at the second sub-display area via the third transmission cable.

[0013] For example, in a display substrate provided by an embodiment of the present disclosure, two of the first pixel drive columns are provided between two adjacent second pixel drive columns.

[0014] For example, in a display substrate provided by one embodiment of the present disclosure, the plurality of data cables include a first data cable and a second data cable, the first data cable is connected to the first pixel drive column and is cut in the transparent display area to form a first sub-data cable segment and a second sub-data cable segment, the second data cable is connected to the second pixel drive column and includes a third sub-data cable segment and a fourth sub-data cable segment, an orthogonal projection of the third sub-data cable segment on a reference line extending in a second direction covers an orthogonal projection of the transparent display area on the reference line, the display substrate further includes a fifth transmission cable and a sixth transmission cable, the fifth transmission cable is located on a first side of the transparent display area in the second direction, and the sixth transmission cable is located on a second side of the transparent display area in the second direction, the first sub-data cable is connected to the third sub-data cable segment via the fifth transmission cable, and the second sub-data cable is connected to the third sub-data cable segment via the sixth transmission cable.

[0015] For example, in a display substrate provided by an embodiment of the present disclosure, the fifth transmission cable and the sixth transmission cable are provided in the same layer as the first transmission cable.

[0016] For example, in a display substrate provided by an embodiment of the present disclosure, the fourth sub-data cable segment is connected to the first transmission cable through a second via hole connection structure.

[0017] For example, in the display substrate provided by one embodiment of the present disclosure, the base substrate further includes a peripheral area surrounding the normal display area, and the fifth transmission cable is located in the peripheral area.

[0018] For example, in a display substrate provided by one embodiment of the present disclosure, the display substrate further includes a plurality of power cables extending along the second direction and configured to supply a second power supply voltage to the plurality of pixel drive columns, and a first conductive structure provided in the same layer as the plurality of power cables, wherein an orthogonal projection of the first conductive structure on the base substrate overlaps with an orthogonal projection of the pixel drive circuit in the second pixel drive column on the base substrate that is not connected to the anode connection cable, and the first conductive structure is connected to the first transmission cable through a third via hole connection structure.

[0019] For example, in a display substrate provided by one embodiment of the present disclosure, each of the pixel driving circuits includes a second conductive structure provided in the same layer as the first transmission cable, and the second conductive structure of the pixel driving circuit in the second pixel driving column that is not connected to the anode connecting cable is connected to the second transmission cable through a fourth via hole connecting structure.

[0020] For example, in a display substrate provided by one embodiment of the present disclosure, the base substrate further includes a peripheral region surrounding the normal display area, and the display substrate further includes a power supply voltage cable located in the peripheral region, the power supply voltage cable configured to transmit a first power supply voltage, and at least one of the first transmission cable and the second transmission cable extending into the peripheral region and electrically connected to the power supply voltage cable.

[0021] At least one embodiment of the present disclosure further provides a display device including any one of the display substrates described above. [Brief explanation of the drawings]

[0022] In order to more clearly describe the technical solutions in the embodiments of the present disclosure, the drawings of the embodiments are briefly described below. Obviously, the drawings in the following description are only some embodiments of the present disclosure and are not intended to limit the present disclosure.

[0023] [Figure 1]FIG. 2 is a plan view of a display substrate according to an embodiment of the present disclosure. [Figure 2] 4 is a schematic diagram of a connection between a first transmission cable and a second transmission cable in a display substrate according to an embodiment of the present disclosure. FIG. [Figure 3] FIG. 10 is a plan view of another display substrate according to an embodiment of the present disclosure. [Figure 4] FIG. 10 is a plan view of another display substrate according to an embodiment of the present disclosure. [Figure 5] FIG. 10 is a plan view of another display substrate according to an embodiment of the present disclosure. [Figure 6] FIG. 2 is a schematic diagram of a stack of display substrates according to one embodiment of the present disclosure. [Figure 7A] FIG. 10 is a schematic diagram of another display substrate stack according to one embodiment of the present disclosure. [Figure 7B] FIG. 10 is a schematic diagram of another display substrate stack according to one embodiment of the present disclosure. [Figure 8] 1 is a schematic diagram of a display device according to an embodiment of the present disclosure. [Figure 9] FIG. 2 is a schematic diagram of a stack of display substrates according to one embodiment of the present disclosure. [Figure 10] FIG. 2 is an equivalent schematic diagram of a pixel driving circuit on a display substrate according to an embodiment of the present disclosure. [Figure 11] 1 is a schematic diagram of multiple film layers in a display substrate according to one embodiment of the present disclosure. [Figure 12] 1 is a schematic diagram of multiple film layers in a display substrate according to one embodiment of the present disclosure. [Figure 13] 1 is a schematic diagram of multiple film layers in a display substrate according to one embodiment of the present disclosure. [Figure 14] 1 is a schematic diagram of multiple film layers in a display substrate according to one embodiment of the present disclosure. [Figure 15] 1 is a schematic diagram of multiple film layers in a display substrate according to one embodiment of the present disclosure. [Figure 16] 1 is a schematic diagram of multiple film layers in a display substrate according to one embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0024] In order to make the objectives, technical solutions and advantages of the embodiments of the present disclosure clearer, the following clearly and completely describes the technical solutions of the embodiments of the present disclosure in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some embodiments of the present disclosure, but not all embodiments. Based on the described embodiments of the present disclosure, other embodiments that a person skilled in the art can obtain without creative work all belong to the protection scope of the present disclosure.

[0025] Unless otherwise defined, technical or scientific terms used in this disclosure should have their ordinary meaning as understood by a person of ordinary skill in the field to which this disclosure belongs. The words "first," "second," and similar words used in this disclosure do not denote any order, quantity, or importance, but are merely used to distinguish different components. Similar words such as "comprise" or "comprises" mean that the element or thing appearing before this word includes the element or thing listed after this word, and equivalents thereof, but do not exclude other elements or things. Similar words such as "connect" or "coupled" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0026] Typically, a pixel unit includes a pixel driving circuit and a light-emitting element connected to the pixel driving circuit, and the pixel driving circuit is usually opaque. Therefore, in an under-screen camera design, the transparent display area of ​​the display substrate can achieve a transparent display function, i.e., the function of being able to both display and transmit light, by removing the pixel driving circuit and retaining the light-emitting element. In this technical solution, the pixel driving circuit corresponding to the light-emitting element in the transparent display area needs to be provided in the normal display area outside the transparent display area.

[0027] Meanwhile, the display area of ​​a typical display substrate includes multiple signal cables for driving pixel units within the display substrate to emit light, and an external driving circuit or driving chip is required to drive these signal cables. Therefore, the display substrate further includes a lead area and a binding area located in the peripheral area. The lead area includes multiple leads, and the binding area is used for binding to an external driving circuit or driving chip. The multiple leads are connected to multiple signal cables and extend into the binding area, thereby binding to the external driving circuit or driving chip. Obviously, the presence of the lead area and binding area in the peripheral area of ​​the display substrate inevitably affects the frame width, particularly the width of the lower frame, of a display device using the display substrate. Therefore, in order to narrow the lower frame of the display device, the leads of signal cables, such as data cables, can be located in the display area, thereby reducing the size of the lead area (fan-out area) and achieving a narrow frame design.

[0028] Based on the above technical solutions, in order to further reduce the load of the power supply voltage (VSS) and improve image quality, an embodiment of the present disclosure provides a display substrate and a display device, the display substrate comprising: a base substrate, a plurality of pixel driving circuits, a plurality of data cables, and a plurality of anode connecting cables, the base substrate including a transparent display area and a normal display area surrounding the transparent display area, the plurality of pixel driving circuits located in the normal display area and arranged in an array along a first direction and a second direction, forming a plurality of pixel driving rows and a plurality of pixel driving columns, each pixel driving row extending along the first direction and each pixel driving column extending along the second direction, the plurality of data cables extending along the second direction and configured to supply data signals to the plurality of pixel driving columns, the normal display area including first light-emitting elements, the transparent display area including second light-emitting elements, the plurality of pixel driving columns including a plurality of first pixel driving columns and a plurality of second pixel driving columns, the first pixel driving circuits The pixel driving circuit in the column is connected to a first light-emitting element, and a portion of the pixel driving circuit in the second pixel driving column is connected to a second light-emitting element via a plurality of anode connecting cables. The display substrate further includes a first transmission cable and a second transmission cable, the first transmission cable extending along a first direction and the second transmission cable extending along a second direction, the first transmission cable and the second transmission cable being disposed on different layers. The first transmission cable and the second transmission cable are connected to the cathodes of the first light-emitting elements and configured to transmit a first power supply voltage. The first transmission cable and the second transmission cable are connected via a first via hole connecting structure, and the orthogonal projection of the first via hole connecting structure on the base substrate does not overlap with the orthogonal projection of the plurality of anode connecting cables on the base substrate. This reduces the load on the signal cable for transmitting the first power supply voltage and thereby improves display image quality, assuming the implementation of an under-screen camera design. Meanwhile, the display substrate also reduces the risk of anode connecting cable breakage.

[0029] Hereinafter, a display substrate and a display device provided by an embodiment of the present disclosure will be described in detail in conjunction with the drawings.

[0030] An embodiment of the present disclosure provides a display substrate. FIG. 1 is a plan view of a display substrate according to the embodiment of the present disclosure. As shown in FIG. 1, the display substrate 100 includes a base substrate 110, a plurality of pixel driving circuits 120, a plurality of data cables 130, and a plurality of anode connecting cables 140. The base substrate 110 includes a transparent display area 112 and a normal display area 114 surrounding the transparent display area 112. The transparent display area 112 and the normal display area 114 may form a display area for light-emitting display. The plurality of pixel driving circuits 120 are located in the normal display area 114 and are arranged in an array along a first direction X and a second direction Y to form a plurality of pixel driving rows 210 and a plurality of pixel driving columns 220. Each pixel driving row 210 extends along the first direction X, and each pixel driving column 220 extends along the second direction Y. The plurality of data cables 130 extend along the second direction Y and are configured to supply data signals to the plurality of pixel driving columns 220.

[0031] As shown in FIG. 1, the normal display area 114 includes a first light-emitting element 151, the transparent display area 112 includes a second light-emitting element 152, the multiple pixel drive columns 220 include a multiple number of first pixel drive columns 220A and a multiple number of second pixel drive columns 220B, the pixel drive circuit 120 in the first pixel drive column 220A is connected to the first light-emitting element 151, for example, the first light-emitting element 151 and the pixel drive circuit 120 are arranged so as to overlap and are directly connected via a via hole connection structure, and a portion of the pixel drive circuit 120 in the second pixel drive column 220B is connected to the second light-emitting element 152 via a multiple number of anode connection cables 140, so that the portion of the pixel drive circuit 120 located in the normal display area 114 can drive the second light-emitting element 152 located in the transparent display area 112 to emit light. In order to clearly show the pixel driving circuit and various signal cables below the first light-emitting element, only one first light-emitting element and two second light-emitting elements are shown in FIG. 1 , and the embodiments of the present disclosure include, but are not limited to, each pixel driving circuit in the first pixel driving column is provided with one corresponding first light-emitting element, but multiple second light-emitting elements may be provided in the transparent display area depending on parameters such as required brightness, resolution, transmittance, etc.

[0032] As shown in FIG. 1 , the display substrate 100 further includes a first transmission cable 171 and a second transmission cable 172, where the first transmission cable 171 extends along a first direction X and the second transmission cable 172 extends along a second direction Y. The first transmission cable 171 and the second transmission cable 172 are arranged on different layers, and the first transmission cable 171 and the second transmission cable 172 are connected to the cathode of the first light-emitting element and configured to transmit a first power supply voltage, for example, a VSS voltage. The first transmission cable 171 and the second transmission cable 172 are connected via a first via hole connection structure V1, and the orthogonal projection of the first via hole connection structure V1 on the base substrate 110 does not overlap with the orthogonal projection of the multiple anode connection cables 140 on the base substrate 110. For example, as shown in the box 290 in FIG. 1 , the orthogonal projection of the first via hole connection structure V1 on the base substrate 110 does not overlap with the orthogonal projection of the plurality of anode connection cables 140 on the base substrate 110. In the display substrate provided by the embodiment of the present disclosure, the display substrate has a transparent display area, and the transparent display area may be correspondingly provided with a photosensitive device such as a camera, thereby enabling the display substrate to realize a full display with camera (FDC) design. Furthermore, because the first and second transmission cables for transmitting the first power supply voltage are connected via the first via hole connection structure, the display substrate can reduce the load on the first and second transmission cables, thereby improving the uniformity of the first power supply voltage signal across the entire display substrate and thereby improving the display image quality. Meanwhile, because the orthogonal projection of the first via hole connection structure on the base substrate does not overlap with the orthogonal projection of the plurality of anode connection cables on the base substrate, the display substrate can also avoid the risk of the anode connection cables being broken due to the recessed structure formed by the first via hole connection structure.

[0033] For example, the material of the base substrate 110 may be a transparent material such as glass, plastic, quartz, or a silicon-based semiconductor material, although the embodiments of the present disclosure include but are not limited to this, and the material of the base substrate may be other suitable materials.

[0034] 2 is a schematic diagram of a connection between a first transmission cable and a second transmission cable in a display substrate according to an embodiment of the present disclosure. As shown in FIG. 2, an insulating flat layer 180 is provided between a first transmission cable 171 and a second transmission cable 172. In this case, a first via hole connection structure V1 includes a first via hole H1 located in the flat layer 180. The first via hole H1 exposes a portion of the first transmission cable 171, and a portion of the second transmission cable 172 is located in the first via hole H1 and connected to the first transmission cable 172.

[0035] 2, the insulating layer 191 is provided on the side of the second transmission cable 172 away from the flat layer 180, and the first via hole connection structure V1 is present, so a recessed structure is formed in the insulating layer 191 at a position corresponding to the first via hole connection structure V1. If the anode connection cable overlaps the first via hole connection structure, the anode connection cable is likely to break at the position of the recessed structure, and as a result, the second element located in the transparent display area cannot emit light and display. In the display substrate provided by the embodiment of the present disclosure, the orthogonal projection of the first via hole connection structure on the base substrate does not overlap with the orthogonal projection of the multiple anode connection cables on the base substrate. This avoids the risk of the anode connection cable breaking due to the recessed structure formed by the first via hole connection structure, and improves product yield.

[0036] For example, the planar layer 180 may include one or a stack of an organic planar layer and an inorganic planar layer, where the material of the organic planar layer may be at least one of polyimide, resin, and acrylic, and the material of the inorganic planar layer may be at least one of silicon oxide, silicon nitride, or silicon oxynitride. The material of the passivation layer may be at least one of silicon oxide, silicon nitride, or silicon oxynitride. Of course, the embodiments of the present disclosure include, but are not limited to, the planar layer may be made of other materials.

[0037] For example, the material of the insulating layer 191 may be at least one or more of silicon oxide, silicon nitride, and silicon oxynitride. Of course, the embodiments of the present disclosure include, but are not limited to, other materials for the gate insulating layer.

[0038] 1 , the base substrate 110 further includes a peripheral region 118 that generally surrounds the display region 114, and the display substrate 100 further includes a power supply voltage cable 260 located in the peripheral region 118, the power supply voltage cable 260 being configured to transmit a first power supply voltage. At least one of the first transmission cable 171 and the second transmission cable 172 extends into the peripheral region 118 and is electrically connected to the power supply voltage cable 260.

[0039] In some examples, as shown in FIG. 1, the plurality of first transmission cables 171 and the plurality of second transmission cables 172 can form a grid structure through the plurality of first via hole connection structures V1, which further reduces the load and increases the uniformity of the first power supply voltage across the entire display substrate, thereby improving the display quality.

[0040] 1 , the display substrate 100 further includes a third transmission cable 173 and a fourth transmission cable 174, both of which are located in the normal display area 114, the third transmission cable 173 extending along a first direction X, and the fourth transmission cable 174 extending along a second direction Y, with one end of the third transmission cable 173 connected to the data cable 130 and the other end of the third transmission cable 173 connected to the fourth transmission cable 174. In this way, the display substrate can reduce the size of the lead area (fan-out area) by arranging the leads of the data cables in the normal display area, and can even eliminate the lead area to achieve a narrow frame design.

[0041] 1 , the display substrate 100 further includes a peripheral region 118 surrounding the normal display region 114. The fourth transmission cable 174 extends from the normal display region 114 to the peripheral region 118, and the data cable 130 can be drawn out via the third transmission cable 173. The fourth transmission cable 174 may extend directly to the peripheral region and be connected to a driver IC for supplying data signals, although the present disclosure includes but is not limited to this. The fourth transmission cable 174 may extend to the peripheral region through a layer change and be connected to a driver IC for supplying data signals, and the location of the layer change may be outside the normal display region.

[0042] In some examples, as shown in Fig. 1, the third transmission cable 173 and the first transmission cable 171 are provided in the same layer. Note that "provided in the same layer" above means that the third transmission cable and the first transmission cable are formed from the same conductive layer by the same patterning process.

[0043] 1, the fourth transmission cable 174 and the second transmission cable 172 are provided in the same layer. Note that the above-mentioned phrase "provided in the same layer" means that the fourth transmission cable and the second transmission cable are formed from the same conductive layer by the same patterning process.

[0044] In some examples, the third transmission cable 173 and the first transmission cable 171 may be provided on the same layer, but the first transmission cable 171 is used to transmit the first power supply voltage and the third transmission cable 173 is used to transmit the data signal. Similarly, the fourth transmission cable 174 and the second transmission cable 172 may be provided on the same layer, but the second transmission cable 172 is used to transmit the first power supply voltage and the fourth transmission cable 174 is used to transmit the data signal.

[0045] 1 , the display substrate 100 further includes a connection cable segment 179. The connection cable segment 179 and the third transmission cable 173 are provided on the same layer and are insulated from each other. The connection cable segment 179 and the third transmission cable 173 overlap a straight line extending along the first direction X. The connection cable segment 179 connects the plurality of second transmission cables 172 arranged along the first direction X. The third transmission cable is used to connect the data cable and the corresponding fourth transmission cable, and therefore cannot extend from one end of the normal display area to the other. In this case, if the third transmission cable is present in some areas of the normal display area and not in other areas in the first direction, the third transmission cable is easily visible to the user when the display substrate is not lit, which affects the display quality. However, in the display substrate, by providing a connection cable segment and positioning the connection cable segment and the third transmission cable substantially in a straight line extending along the first direction X, the display substrate can prevent the third transmission cable from being visible to the user. Meanwhile, the connection cable segment can further reduce the overall load on the first transmission cable and the second transmission cable.

[0046] 3 is a plan view of another display substrate according to an embodiment of the present disclosure. As shown in FIG. 3, the third transmission cable can be located within the M-shaped region shown in FIG. By providing the connection cable segment 179, the connection cable segment 179 and the third transmission cable 173 can have the same light reflectivity, thereby preventing the third transmission cable from being recognized by a user. The third transmission cable can also be located in a V-shaped region, a W-shaped region, a triangular region, etc. within the normal display area, and the embodiment of the present disclosure is not limited thereto.

[0047] 1, the connection cable segment 179 and the third transmission cable 173 are provided in the same layer and spaced apart in the first direction. That is, the connection cable segment 179 and the third transmission cable may be formed from the same conductive layer by the same patterning process, which allows the connection cable segment 179 and the third transmission cable 173 to have the same light reflectivity, thereby preventing the third transmission cable from being recognized by a user.

[0048] 1, the distance in the first direction between the connection cable segment 179 and the third transmission cable 173 is smaller than the size in the first direction of one pixel driving circuit 130, thereby preventing this distance from being visible to the user. Note that the size in the first direction of the pixel driving circuit may be the size in the first direction of orthogonal projection of each film layer of the pixel driving circuit on the base substrate, or may be the size in the first direction of orthogonal projection of an active layer of the pixel driving circuit on the base substrate.

[0049] In some examples, the orthogonal projection of the spacing between the connection cable segment and the third transmission cable on the base substrate can overlap with the orthogonal projection of the anode of the light-emitting element on the base substrate, and the spacing cannot be perceived by the user, thereby further improving display quality.

[0050] In some examples, as shown in FIG. 1, the width in the second direction of the connecting cable segment 179 is equal to the width in the second direction of the third transmission cable 173, thereby further preventing the third transmission cable 173 from being visible to the user.

[0051] 1, in at least one pixel driving column 220, both the second transmission cable 172 and the fourth transmission cable 174 overlap an imaginary line extending along the second direction Y and are insulated from each other. Thus, by positioning the second transmission cable and the fourth transmission cable approximately on the imaginary line extending along the second direction Y, the display substrate can prevent the second transmission cable and the fourth transmission cable from being recognized by a user.

[0052] 1, in at least one pixel drive string 220, the second transmission cable 172 and the fourth transmission cable 174 are provided in the same layer and spaced apart in the first direction. That is, the second transmission cable 172 and the fourth transmission cable 174 may be formed from the same conductive layer using the same patterning process, which allows the second transmission cable 172 and the fourth transmission cable 174 to have the same light reflectivity, thereby preventing the second transmission cable 172 and the fourth transmission cable 174 from being noticeable to a user.

[0053] In some examples, as shown in FIG. 1, the distance in the second direction between the second transmission cable 172 and the fourth transmission cable 174 is smaller than the size of one pixel driving circuit 130 in the second direction, so that this distance can be prevented from being visible to the user.

[0054] In some examples, as shown in FIG. 1, the width in the first direction of the second transmission cable 172 is equal to the width in the first direction of the fourth transmission cable 174, thereby further preventing the second transmission cable 172 and the fourth transmission cable 174 from being visible to the user.

[0055] 1 , the normal display area 114 includes a first sub-display area 114A and a second sub-display area 114B arranged in a first direction. The data cable 130 located at the edge of the first sub-display area 114A is connected to the fourth transmission cable 174 located at the first sub-display area 114A via the third transmission cable 173, and the data cable 130 located at the edge of the second sub-display area 114B is connected to the fourth transmission cable 174 located at the second sub-display area 114B via the third transmission cable 173. This configuration allows the display substrate to gather the leads of the data cables in the normal display area, thereby achieving a lead function. Of course, embodiments of the present disclosure include, but are not limited to, this configuration. The data cable located at the edge of the normal display area may be connected to the fourth transmission cable located at the normal display area via the third transmission cable 173 without providing the first and second sub-display areas.

[0056] 1, one second pixel drive column 220B is inserted between every three first pixel drive columns 220A, i.e., two first pixel drive columns 220A are provided between two adjacent second pixel drive columns 220B. Of course, embodiments of the present disclosure include, but are not limited to, one second pixel drive column inserted between every two first pixel drive columns, and one second pixel drive column inserted between every four first pixel drive columns, i.e., one first pixel drive column, three first pixel drive columns, or four first pixel drive columns are provided between two adjacent second pixel drive columns.

[0057] In some examples, one second pixel drive column is inserted for every N first pixel drive columns, with N ranging in value from 2-10.

[0058] 1 and 4, the plurality of data cables 130 includes a first data cable 131 and a second data cable 132. The first data cable 131 is connected to a first pixel driving column 220A and is cut in the transparent display area 112 to form a first sub-data cable segment 131A and a second sub-data cable segment 131B. The second data cable 132 is connected to a second pixel driving column 220B and includes a third sub-data cable segment 132A and a fourth sub-data cable segment 132B. The orthogonal projection of the third sub-data cable segment 132A on a reference line extending in the second direction Y covers the orthogonal projection of the transparent display area 112 on the reference line. That is, the first data cable 131 is cut by the transparent display area 112 to form a first sub-data cable segment 131A and a second sub-data cable segment 131B, and the second data cable 132 is cut at a lower boundary position corresponding to the transparent display area 112 and the normal display area 114 to form a third sub-data cable segment 132A and a fourth sub-data cable segment 132B. Note that in order to clearly show the connection relationships between the above-mentioned signal cables or signal cable segments, only some of the signal cables and signal cable segments are shown in FIG. 3.

[0059] As shown in Figures 1 and 4, since the fourth sub-data cable segment 132B does not need to drive a light-emitting element, a data signal does not need to be loaded onto the fourth sub-data cable segment 132B. In this case, the fourth sub-data cable segment 132B is electrically connected to the first transmission cable 171 to load the first power supply voltage, thereby reducing the load on the first transmission cable 171.

[0060] 1 and 4, the display substrate 100 further includes a fifth transmission cable 175 and a sixth transmission cable 176, where the fifth transmission cable 175 is located on a first side of the transparent display area 112 in the second direction, and the sixth transmission cable 176 is located on a second side of the transparent display area in the second direction. The first sub-data cable 131A is connected to the third sub-data cable segment 132A via the fifth transmission cable 175, and the second sub-data cable 131B is connected to the third sub-data cable segment 132A via the sixth transmission cable 176. Thus, the display substrate can connect the first and second sub-data cables separated by the transparent display area via the fifth transmission cable 175 and the sixth transmission cable 176 to realize signal transmission. In addition, the third sub-data cable may be used as a data cable of a pixel driving circuit corresponding to the second light-emitting element in the transparent display area, and the first sub-data cable, the third sub-data cable and the second sub-data cable are connected to each other to supply data signals to the light-emitting elements in the same column of the display substrate.

[0061] 1 and 4, the fifth transmission cable 175 and the sixth transmission cable 176 are provided on the same layer as the first transmission cable 171, thereby making better use of the conductive film layer on the display substrate and making the fifth transmission cable 175, the sixth transmission cable 176, and the first transmission cable 171 have the same light reflectivity, thereby preventing the fifth transmission cable 175, the sixth transmission cable 176, and the first transmission cable 171 from being visible to the user. Of course, the fifth transmission cable 175 and the sixth transmission cable 176 may be provided on other conductive layers, including but not limited to, embodiments of the present disclosure.

[0062] In some examples, as shown in FIGS. 1 and 4, both the sixth transmission cable 176 and the first transmission cable 171 can overlap with an imaginary line extending along the first direction X, which can further prevent the sixth transmission cable 176 and the seventh transmission cable 177 from being visible to the user.

[0063] In some examples, as shown in Figures 1 and 4, the width of the sixth transmission cable 176 in the second direction Y is equal to the width of the first transmission cable 171 in the second direction Y, thereby further preventing the sixth transmission cable 176 and the first transmission cable 171 from being visible to the user.

[0064] In some examples, as shown in FIGS. 1 and 4, the fourth sub-data cable segment 132B is connected to the first transmission cable 171 through a second via hole connection structure V2. The pixel driving circuit 120 corresponding to the fourth sub-data cable segment 132B does not actually need to drive a light-emitting element and is a dummy pixel driving circuit. Therefore, the fourth sub-data cable segment 132B does not transmit a data signal. In this case, the fourth sub-data cable segment is connected to the first transmission cable through a second via hole connection structure, which may be used to further reduce the load on the first and second transmission cables and improve display quality. Note that the specific structure of the second via hole connection structure can be referred to the first via hole connection structure, and a repeated description will be omitted here.

[0065] 1 and 4, the base substrate 110 further includes a peripheral region 118 that generally surrounds the display region 114, and the fifth transmission cable 175 is located in the peripheral region 118. This allows the display substrate to utilize the space in the peripheral region to provide the fifth transmission cable, thereby improving the space utilization rate of the display substrate and reducing the number of signal cables in the display region.

[0066] 1 and 4, the fifth transmission cable 175 and the sixth transmission cable 176 may be located on the same layer. However, embodiments of the present disclosure, including but not limited to, may include the fifth transmission cable 175 and the sixth transmission cable 176 being formed on other conductive layers rather than being located on the same layer, due to fewer signal cables in the surrounding area.

[0067] In some examples, as shown in FIG. 4, the second sub-data cable segment 131B may be switched to a fourth transmission cable 174 via a third transmission cable 173, with the fourth transmission cable 174 typically extending from the display area 114 to the peripheral area.

[0068] 5 is a plan view of another display substrate according to an embodiment of the present disclosure. As shown in FIG. 5, the display substrate 100 includes a base substrate 110, a plurality of pixel driving circuits 120, a plurality of data cables 130, and a plurality of anode connecting cables 140. The base substrate 110 includes a transparent display area 112 and a normal display area 114 surrounding the transparent display area 112. The transparent display area 112 and the normal display area 114 can form a display area for light-emitting display. The plurality of pixel driving circuits 120 are generally located in the display area 114 and are arranged in an array along a first direction X and a second direction Y to form a plurality of pixel driving rows 210 and a plurality of pixel driving columns 220, each of which extends along the first direction X and each of which extends along the second direction Y. The plurality of data cables 130 extend along the second direction Y and are configured to supply data signals to the plurality of pixel driving columns 220.

[0069] 5, the normal display area 114 includes a first light-emitting element 151, the transparent display area 112 includes a second light-emitting element 152, the plurality of pixel drive columns 220 include a plurality of first pixel drive columns 220A and a plurality of second pixel drive columns 220B, the pixel drive circuits 120 in the first pixel drive column 220A are connected to the first light-emitting elements 151, for example, the first light-emitting elements 151 and the pixel drive circuits 120 are arranged so as to overlap and are directly connected via a via-hole connection structure, and a portion of the pixel drive circuits 120 in the second pixel drive column 220B is connected to the second light-emitting elements 152 via a plurality of anode connection cables 140, so that the portion of the pixel drive circuits 120 located in the normal display area 114 can drive the second light-emitting elements 152 located in the transparent display area 112 to emit light. Note that the sizes of the first and second light-emitting elements are approximate, and the size of the first light-emitting element may be smaller than the size of the second light-emitting element.

[0070] As shown in FIG. 5 , the display substrate 100 further includes a first transmission cable 171 and a second transmission cable 172, where the first transmission cable 171 extends along a first direction X and the second transmission cable 172 extends along a second direction Y. The first transmission cable 171 and the second transmission cable 172 are arranged on different layers, and the first transmission cable 171 and the second transmission cable 172 are connected to the cathode of the first light-emitting element 151 and configured to transmit a first power supply voltage, for example, VSS. The first transmission cable 171 and the second transmission cable 172 are connected via a first via hole connection structure V1, and the orthogonal projection of the first via hole connection structure V1 on the base substrate 110 does not overlap with the orthogonal projection of the multiple anode connection cables 140 on the base substrate 110.

[0071] In the display substrate provided by the embodiments of the present disclosure, the display substrate includes a transparent display area, and a photosensitive device such as a camera may be provided in the transparent display area, thereby enabling the display substrate to realize a full display with camera (FDC) design. Furthermore, the first and second transmission cables for transmitting a first power supply voltage are connected via a first via hole connection structure. This reduces the load on the first and second transmission cables, thereby improving the uniformity of the first power supply voltage across the entire display substrate and thereby improving display image quality. Meanwhile, the orthogonal projection of the first via hole connection structure on the base substrate does not overlap with the orthogonal projection of the multiple anode connection cables on the base substrate. This also prevents the risk of the anode connection cables being broken due to the recessed structure formed by the first via hole connection structure.

[0072] In some examples, as shown in FIG. 5 , the display substrate 100 further includes a plurality of power cables 160 and a first conductive structure 251, where the plurality of power cables 160 extend along a second direction and are configured to supply a second power supply voltage, such as VDD, to the plurality of pixel driving columns 220, the first conductive structure 251 is disposed on the same layer as the plurality of power cables 160, the orthogonal projection of the first conductive structure 251 on the base substrate overlaps with the orthogonal projection of the pixel driving circuit 130 in the second pixel driving column 220B on the base substrate that is not connected to the anode connecting cable 140, and the first conductive structure 251 and the first transmission cable 171 are connected via a third via hole connecting structure V3. Since the pixel driving circuits 120 in the second pixel driving column 220B that are not connected to the anode connecting cable 140 do not actually need to drive the light-emitting elements to emit light for display, the parts of these pixel driving circuits that correspond to the power supply, i.e., the first conductive structures, may be used to transmit the first power supply voltage, thereby further reducing the load on the first transmission cable and the second transmission cable and improving the display quality.

[0073] 5, the plurality of power cables 160 includes a first power cable 161 and a second power cable 162, where the first power cable 161 corresponds to the first pixel drive column 220A and is configured to supply a second power supply voltage to the pixel drive circuits 120 in the first pixel drive column 220A. The first power cable may be electrically connected to the anode of the first light-emitting element, or the anode of the first light-emitting element may be configured to load the second power supply voltage via the pixel drive circuit.

[0074] In some examples, as shown in FIG. 5, the orthogonal projection of the second power cable 162 on a reference line extending along the second direction covers the orthogonal projection of the transparent display area 112 on the reference line.

[0075] In some examples, the orthogonal projection of the second power cable 162 on the base substrate 110 overlaps with the orthogonal projection of the at least one anode connection cable 140 on the base substrate 110 .

[0076] In some examples, as shown in FIG. 5, a portion of the first power cable 161 is also divided into two sub-first power cable segments by a transparent display area 112.

[0077] In some examples, as shown in FIG. 5 , the length of the second power cable 162 is shorter than the length of the first power source 161, and both the second power cable 162 and the first conductive structure 251 can overlap an imaginary line extending in the second direction Y. The second power cable 162 and the first conductive structure 251 are provided in the same layer, i.e., formed from the same conductive layer by the same patterning process. The pixel driving circuit corresponding to the first conductive structure does not actually need to drive the light-emitting element and is a dummy pixel driving circuit. Therefore, the first conductive structure does not transmit the second power supply voltage. In this case, the first conductive structure may be used to transmit the first power supply voltage, thereby further reducing the load on the first and second transmission cables and improving display quality.

[0078] In some examples, as shown in FIG. 5, the width of the second power cable 162 in the first direction is equal to the width of the first conductive structure 251 in the first direction.

[0079] In some examples, as shown in FIG. 5, the power cable 160 may be located on the base substrate 110, the first transmission cable 171 may be located on the side of the power cable 160 away from the base substrate 110, and the second transmission cable 172 may be located on the side of the first transmission cable 171 away from the base substrate 110.

[0080] In some examples, as shown in FIG. 5, the anode connection cable 140 can be located on the side of the second transmission cable 172 away from the base substrate 110.

[0081] In some examples, power cable 160 can be located on a first conductive layer or a first source-drain metal layer on base substrate 110, first transmission cable 171, third transmission cable 173, connecting cable segment 179, fifth transmission cable 175, and sixth transmission cable 176 can be located on a second conductive layer or a first conductive layer away from the second source-drain metal layer on base substrate 110, and second transmission cable 172 and fourth transmission cable 174 can be located on a third conductive layer on one side of the first conductive layer or a second conductive layer away from the third source-drain metal layer.

[0082] In some examples, the first conductive layer, the second conductive layer, and the third conductive layer may be made of a metallic material, and the anode connecting cable may be made of a transparent conductive oxide.

[0083] 6 is a schematic diagram of a display substrate stack according to an embodiment of the present disclosure. As shown in FIG. 6, a portion of the pixel driving circuit 120 located in the normal display area 114 is connected to a plurality of anode connecting cables 140, which extend from the normal display area 114 to the transparent display area 112 and supply driving voltages to the second light-emitting elements in the transparent display area 112.

[0084] 7A is a schematic diagram of another display substrate stack according to an embodiment of the present disclosure, and FIG. 7B is a schematic diagram of another display substrate stack according to an embodiment of the present disclosure. FIG. 7A shows a schematic diagram of the stack in an area where an anode connection cable is provided, and for clarity, the anode connection cable is omitted, while FIG. 7B shows a schematic diagram of the stack in an area where an anode connection cable is provided and an area where an anode connection cable is not provided.

[0085] 7A and 7B, in the region where the anode connection cable 140 is provided, the first transmission cable 171 and the second transmission cable 172 are not connected via a via hole connection structure, but in the region where the anode connection cable 140 is not provided, the first transmission cable 171 and the second transmission cable 172 are connected via the first via hole connection structure V1. That is, the first transmission cable 171 and the second transmission cable 172 are connected via the first via hole connection structure V1, and the orthogonal projection of the first via hole connection structure V1 on the base substrate 110 does not overlap with the orthogonal projection of the multiple anode connection cables 140 on the base substrate 110. This allows the display substrate to avoid the risk of the anode connection cables breaking due to the recessed structure formed by the first via hole connection structure.

[0086] 7B , each pixel driving circuit 120 includes a second conductive structure 252, and the second conductive structure 252 and the first transmission cable 171 are provided on the same layer. The second conductive structure 252 of the pixel driving circuits 120 in the second pixel driving column 220B that are not connected to the anode connecting cable 140 is connected to the second transmission cable 172 through the fourth via hole connecting structure V4. Because the pixel driving circuits 120 in the second pixel driving column 220B that are not connected to the anode connecting cable 140 do not actually need to drive the light-emitting elements to emit light for display, the second conductive structures of these pixel driving circuits may be used to transmit the first power supply voltage, thereby further reducing the load on the first and second transmission cables and improving display quality.

[0087] An embodiment of the present disclosure further provides a display device. FIG. 8 is a schematic diagram of a display device according to an embodiment of the present disclosure. As shown in FIG. 8, the display device 300 includes the display substrate 100 described above. This allows the display device to achieve a narrow frame design and an under-screen camera design. Furthermore, the display device reduces the load on the first power supply voltage and improves display quality.

[0088] For example, in some examples, the display device may be any product or component with a display function, such as a smartphone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, or a navigator.

[0089] An embodiment of the present disclosure provides a display substrate, in which Fig. 9 is a schematic diagram of a stack of a display substrate according to an embodiment of the present disclosure, Fig. 10 is an equivalent schematic diagram of a pixel driving circuit in a display substrate according to an embodiment of the present disclosure, and Figs. 11-16 are schematic diagrams of multiple film layers in a display substrate according to an embodiment of the present disclosure.

[0090] 9 to 16, the display substrate 100 includes a base substrate 110, a semiconductor layer 410, a first gate layer 420, a second gate layer 430, a first conductive layer 440, a second conductive layer 450, and a third conductive layer 460. The semiconductor layer 410, the first gate layer 420, the second gate layer 430, the first conductive layer 440, the second conductive layer 450, and the third conductive layer 460 are sequentially provided along a direction perpendicular to the base substrate 110. Note that insulating layers such as a gate insulating layer, an interlayer insulating layer, and a passivation layer are provided between any two of the semiconductor layer, the first gate layer, the second gate layer, the first conductive layer, the second conductive layer, and the third conductive layer, and a repeated description thereof will be omitted here.

[0091] In the display substrate provided by the embodiments of the present disclosure, the pixel driving circuit may adopt a 7T1C structure, i.e., a circuit structure including seven transistors and one storage capacitor. Of course, the embodiments of the present disclosure include but are not limited to this, and the pixel driving circuit may also adopt other types of circuit structures such as 8T1C, 8T2C, etc.

[0092] 9 to 16, the film layers of the display substrate provided by the embodiments of the present disclosure will be described in detail below by taking the pixel driving circuit adopting a 7T1C structure as an example.

[0093] As shown in FIGS. 9 and 10, the pixel driving circuit 120 includes a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4, a fifth transistor T5, a sixth transistor T6, a seventh transistor T7, and a storage capacitor Cst. The drain electrode of the first transistor T1, the drain electrode of the second transistor T2, and the gate electrode of the first transistor T1 are connected to a first node N1; the source electrode of the third transistor T3, the drain electrode of the fourth transistor T4, and the drain electrode of the sixth transistor T6 are connected to a second node N2; the drain electrode of the third transistor T3, the source electrode of the fifth transistor T5, and the source electrode of the second transistor T2 are connected to a third node; the drain electrode of the fifth transistor T5 and the drain electrode of the seventh transistor T7 are connected to an anode of a light-emitting element (such as the above-mentioned first or second light-emitting element); the first electrode plate CE1 of the storage capacitor Cst and the gate electrode of the third transistor T3 are connected to the first node N1; and the second electrode plate CE2 of the storage capacitor Cst is connected to the source electrode of the sixth transistor T6, and is configured to be connected to a power cable.

[0094] 9 and 11 , the semiconductor layer 410 includes a first unit 411, a second unit 412, a third unit 413, a fourth unit 414, a fifth unit 415, a sixth unit 416, and a seventh unit 417. The first unit 411 includes a first channel region C1 and a first source electrode region S1 and a first drain electrode region D1 located on both sides of the first channel region C1, the second unit 412 includes a second channel region C2 and a second source electrode region S2 and a second drain electrode region D2 located on both sides of the second channel region C2, the third unit 413 includes a third channel region C3 and a third source electrode region S3 and a third drain electrode region D3 located on both sides of the third channel region C3, and the fourth unit 414 includes a fourth channel region C4 and a fourth channel region C5 and a fifth unit 415 located on both sides of the fourth channel region C4. The fifth unit 415 includes a fifth channel region C5 and a fifth source electrode region S5 and a fifth drain electrode region S5 located on both sides of the fifth channel region C5. The sixth unit 416 includes a sixth channel region C6 and a sixth source electrode region S6 and a sixth drain electrode region D6 located on both sides of the sixth channel region C6. The seventh unit 417 includes a seventh channel region C7 and a seventh source electrode region S7 and a seventh drain electrode region D7 located on both sides of the seventh channel region C7.

[0095] For example, the semiconductor layer may be made of a silicon-based semiconductor material, such as polysilicon. Of course, embodiments of the present disclosure include, but are not limited to, the semiconductor layer may be made of other semiconductor materials, such as oxide semiconductor materials.

[0096] The channel regions may be undoped portions of the semiconductor layer, and the source and drain electrode regions may be doped portions of the semiconductor layer. The first unit 411 is an active layer of the first transistor T1, the second unit 412 is an active layer of the second transistor T2, the third unit 413 is an active layer of the third transistor T3, the fourth unit 414 is an active layer of the fourth transistor T4, the fifth unit 415 is an active layer of the fifth transistor T5, the sixth unit 416 is an active layer of the sixth transistor T5, and the seventh unit 417 is an active layer of the seventh transistor T7.

[0097] For example, as shown in FIG. 11, the first drain electrode region D1 and the second drain electrode region D2 are connected, the third drain electrode region D3 and the fifth source electrode region S5 are connected, the fourth drain electrode region D4, the third source electrode region S3 and the sixth drain electrode region D6 are connected, and the fifth drain electrode region D5 and the seventh drain electrode region D7 are connected.

[0098] In some examples, as shown in FIG. 12, the first gate layer 420 includes a reset signal cable 421 extending along the first direction, a gate line 422 extending along the first direction, a first electrode block CE1, and an emission control line 423 extending along the first direction.

[0099] 9 to 16 , the reset signal cable 421 overlaps with the seventh channel region C7 and the first channel region C1 of the semiconductor layer 410, and therefore, the portions of the reset signal cable 421 overlapping with the seventh channel region C1 and the first channel region C1 may be used as the gate electrode of the seventh transistor T7 and the gate electrode of the first transistor T1, respectively. The gate line 422 overlaps with the second channel region C2 and the fourth channel region C4 of the semiconductor layer 410, and therefore, the portions of the gate line 422 overlapping with the second channel region C2 and the fourth channel region C4 may be used as the gate electrode of the second transistor T2 and the gate electrode of the fourth transistor T4, respectively. The light-emitting control cable 423 overlaps with the fifth channel C5 and the sixth channel C6, and therefore, the portions of the light-emitting control cable 423 overlapping with the fifth channel C5 and the sixth channel C6 may be used as the gate electrode of the fifth transistor T5 and the gate electrode of the sixth transistor T6, respectively. The first electrode block CE1 overlaps the third channel region C3, so that the first electrode block CE1 may be used as the gate electrode of the third transistor T3.

[0100] For example, as shown in FIG. 12, the reset signal cable 421, the gate line 422, and the light-emitting control cable 423 all extend substantially along a first direction, and the reset signal cable 421, the gate line 422, the first electrode block CE1, and the light-emitting control cable 423 are arranged sequentially along a second direction perpendicular to the first direction.

[0101] 13, the second gate layer 430 includes a first initialization signal cable 431, a second initialization signal cable 432, and a second electrode block CE2 extending along the first direction. The first initialization signal cable 431, the second initialization signal cable 432, and the second electrode block CE2 are sequentially arranged along the second direction.

[0102] 9-16, the first initialization signal cable 431 is electrically connected to the first source electrode region S1 and the seventh source electrode region S7, thereby supplying an initialization signal to the first transistor T1 and the seventh transistor T7. The orthogonal projection of the second electrode block CE2 on the base substrate 110 at least partially overlaps with the orthogonal projection of the first electrode block CE1 on the base substrate 110 to form a storage capacitor Cst.

[0103] For example, as shown in FIG. 13, the second electrode block CE2 includes an opening OP, and the orthogonal projection of the opening OP on the base substrate 110 overlaps with the orthogonal projection of the first electrode layer CE1 on the base substrate 110, exposing a portion of the first electrode layer CE1.

[0104] In some examples, as shown in FIG. 14, the first conductive layer 440 includes a power cable 160 extending along the second direction, a first adapter block 441, a second adapter block 442, a third adapter block 443, a fourth adapter block 444, and a fifth adapter block 445.

[0105] For example, as shown in Figures 9-16, the first adapter block 441 is configured to be connected to the fifth drain electrode region D5 of the fifth transistor T5 and to be connected to the anode of a light-emitting element to be formed later, thereby transmitting a driving signal (e.g., a power supply voltage) from the fifth source electrode region D5 of the fifth transistor T5 to the anode of the light-emitting element.

[0106] 9-16, one end of the second adapter block 442 may be connected to the first drain electrode region D1 of the first transistor T1, and the other end of the second adapter block 442 may be connected to the gate electrode of the third transistor T3, i.e., the first electrode block CE1, through the opening OP. In this case, the second adapter block may be regarded as a node connection block of the first node N1.

[0107] For example, as shown in Figures 9 to 16, one end of the third adapter block 443 is connected to the seventh drain electrode region D7 of the seventh transistor T7, and the other end of the third adapter block 443 is connected to the first initialization signal cable 431, so that the first initialization signal cable 431 may be connected to the source electrode of the seventh transistor T7.

[0108] For example, as shown in Figures 9-16, the fourth adapter block 444 is connected to the fourth source electrode region S4 of the fourth transistor T4 and is configured to be connected to a data cable to be formed later, thereby transmitting a data signal to the fourth source electrode region S4 of the fourth transistor T4.

[0109] For example, as shown in Figures 9 to 16, one end of the fifth adapter block 445 is connected to the sixth source electrode region S6 of the sixth transistor T6, and the other end of the fifth adapter block 445 is connected to the second initialization signal cable 432, so that the second initialization signal cable 432 may be connected to the source electrode of the sixth transistor T6.

[0110] 15 , the second conductive layer 450 includes the first transmission cable 171 and the second conductive structure 252 described above. The first transmission cable 171 includes a main body 171A extending along a first direction and a first extension portion 171B and a second extension portion 171C extending from the main body 171A in a second direction. The first extension portion 171B is configured to be electrically connected to a second transmission cable 172 to be formed later and is also a position where the first via hole connection structure is disposed. The second extension portion 171C is located only in the second pixel drive column 220B and is configured to be electrically connected to a fourth sub-data cable segment 132B to be formed later.

[0111] For example, as shown in FIG. 15, the second conductive structure 252 in the first pixel driving column 220A may be electrically connected to the power cable 160, and the second conductive structure 252 of the pixel driving circuit 120 in the second pixel driving column 220B that is not connected to the anode connecting cable 140 is connected to the second transmission cable 172 through the fourth via hole connecting structure V4.

[0112] For example, as shown in Figures 9 and 15, the orthogonal projection of the second conductive structure 252 on the base substrate 110 overlaps with the orthogonal projection of the second adapter block 442 on the base substrate 110, thereby making the voltage of the first node N1 more stable.

[0113] For example, as shown in FIGS. 9 and 15, the orthogonal projection of the second conductive structure 252 on the base substrate 110 overlaps with the orthogonal projection of the second transmission cable 172 on the base substrate.

[0114] 16 , the third conductive layer 460 includes the data cable 130, the second transmission cable 172, and the connection electrode 461. The data cable 130 is electrically connected to the fourth adapter block 444, the second transmission cable 172 is electrically connected to the first transmission cable 171, and the connection electrode 461 is electrically connected to the first adapter block 441.

[0115] An operation of the pixel driving circuit shown in FIG. 10 will now be briefly described. First, when a reset signal is transmitted to the reset signal cable 421 and the seventh transistor T7 is turned on, residual current flowing through the anode of each light-emitting element is discharged through the seventh transistor T7, thereby suppressing light emission due to residual current flowing through the anode of each light-emitting element. Next, when a reset signal is transmitted to the reset signal cable 421, a first initialization signal is transmitted to the first initialization signal cable 431, and a second initialization signal is transmitted to the second initialization signal cable 432, the first transistor T1 and the seventh transistor T7 are turned on. The first initialization signal initializes the anode of each light-emitting element through the seventh transistor T7, and the second initialization signal initializes the gate electrode of the third thin transistor T3 and the first electrode block CE1 of the storage capacitor Cst through the first transistor T1. Furthermore, the initialization of the gate electrode of the third thin transistor T3 turns on the third transistor T3.

[0116] Next, when a gate electrode signal is transmitted to the gate line 422 and a data signal is transmitted to the data cable 130, both the second transistor T2 and the fourth transistor T4 are turned on, and the data cable 130 applies the data voltage Vd to the gate electrode of the third transistor T3 through the second transistor T2 and the fourth transistor T4. At this time, the voltage applied to the gate electrode of the third thin transistor T3 is the compensation voltage Vd+Vth, and the compensation voltage applied to the gate electrode of the third transistor T3 is also applied to the first electrode block CE1 of the storage capacitor Cst.

[0117] Next, the power cable 160 applies the driving voltage Vel to the second electrode block CE2 of the storage capacitor Cst and the compensation voltage Vd+Vth to the first electrode block CE1, so that the charge corresponding to the difference between the voltages respectively applied to the two electrodes of the storage capacitor Cst is stored in the storage capacitor Cst, and the third transistor T3 is turned on for a predetermined time.

[0118] Next, when an emission control signal is applied to the light-emitting control cable 423, both the sixth transistor T6 and the fifth transistor T5 are turned on, and the power cable 160 applies the driving voltage Vel to the source electrode of the sixth transistor. At this time, the driving voltage Vel passes through the third transistor T3, which is turned on by the storage capacitor Cst. The voltage of the drain electrode of the third transistor T3 is Vel, and the voltage of the gate electrode of the third transistor T3 is Vd+Vth, which causes the third transistor T3 to enter a saturated state, thereby causing the third transistor T3 to generate a driving current Ids. The driving current Id is then applied to the anode of the light-emitting element through the fifth transistor T5, causing the light-emitting element to emit light.

[0119] It should be noted that the above-described operating modes of the drive circuit are only possible drive modes of the drive circuit, and the embodiments of the present disclosure include, but are not limited to, these.

[0120] In some examples, the first conductive layer may be a first source-drain metal layer, the second conductive layer may be a second source and drain metal layer, and the third conductive layer may be a third source and drain metal layer.

[0121] A few points need to be explained:

[0122] (1) The drawings of the embodiments of the present disclosure relate only to the structures of the embodiments of the present disclosure, and for other structures, reference may be made to conventional designs.

[0123] (2) Features of the same embodiment and different embodiments of the present disclosure may be combined with each other without contradiction.

[0124] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto, and any changes or substitutions that a person skilled in the art can easily make within the technical scope disclosed in the present disclosure should be included within the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be governed by the claims. [Explanation of symbols]

[0125] 100 Display board 110 Base board 112 Transparent display area 114 Normal display area 120 pixel drive circuit 130 Data Cable 140 Anode connection cable 151 first light-emitting element 152 second light-emitting element 171 First Transmission Cable 172 Second Transmission Cable 220 pixel drive columns 220A 1st pixel drive column 220B Second pixel drive column

Claims

1. A display substrate, a base substrate including a transparent display area and a normal display area surrounding the transparent display area; a plurality of pixel drive circuits located in the normal display area, the pixel drive circuits being arranged in an array along a first direction and a second direction to form a plurality of pixel drive rows and a plurality of pixel drive columns, each of the pixel drive rows extending along the first direction and each of the pixel drive columns extending along the second direction; a plurality of data cables extending along the second direction and configured to provide data signals to the plurality of pixel drive columns; a plurality of anode connection cables; the normal display area includes a first light-emitting element, the transparent display area includes a second light-emitting element, the plurality of pixel drive columns include a plurality of first pixel drive columns and a plurality of second pixel drive columns, the pixel drive circuits in the first pixel drive columns are connected to the first light-emitting elements, and a portion of the pixel drive circuits in the second pixel drive columns are connected to the second light-emitting elements via the plurality of anode connection cables; the display substrate further includes a first transmission cable and a second transmission cable, the first transmission cable extending along the first direction, the second transmission cable extending along the second direction, the first transmission cable and the second transmission cable being provided on different layers, the first transmission cable and the second transmission cable being connected to a cathode of the first light-emitting element and configured to transmit a first power supply voltage; A display substrate characterized in that the first transmission cable and the second transmission cable are connected via a first via hole connection structure, and the orthogonal projection of the first via hole connection structure on the base substrate does not overlap with the orthogonal projection of the multiple anode connection cables on the base substrate.

2. the display substrate further includes a third transmission cable and a fourth transmission cable, the third transmission cable and the fourth transmission cable are located in the normal display area, the third transmission cable extends along the first direction, and the fourth transmission cable extends along the second direction; The display substrate of claim 1, wherein one end of the third transmission cable is connected to the data cable, and the other end of the third transmission cable is connected to the fourth transmission cable.

3. The display substrate of claim 2 , wherein the third transmission cable and the first transmission cable are provided on the same layer.

4. The display substrate of claim 2 , wherein the fourth transmission cable and the second transmission cable are provided in the same layer.

5. further comprising connecting cable segments provided in the same layer as the third transmission cable and insulated from each other; 3. The display substrate of claim 2, wherein both the connection cable segment and the third transmission cable overlap with a virtual straight line extending along the first direction, and the connection cable segment connects a plurality of the second transmission cables arranged along the first direction.

6. 3. The display substrate of claim 2, wherein in at least one of the pixel driving columns, both the second transmission cable and the fourth transmission cable overlap with a virtual straight line extending along the second direction and are insulated from each other.

7. 7. The display substrate of claim 2, wherein the normal display area includes a first sub-display area and a second sub-display area arranged in the first direction, the data cable located at the edge of the first sub-display area is connected to the fourth transmission cable located at the first sub-display area via the third transmission cable, and the data cable located at the edge of the second sub-display area is connected to the fourth transmission cable located at the second sub-display area via the third transmission cable.

8. The display substrate according to claim 1 , wherein two of the first pixel driving columns are provided between two adjacent second pixel driving columns.

9. the plurality of data cables include a first data cable and a second data cable, the first data cable is connected to the first pixel drive column and is cut at the transparent display area to form a first sub-data cable segment and a second sub-data cable segment, the second data cable is connected to the second pixel drive column and includes a third sub-data cable segment and a fourth sub-data cable segment, and an orthogonal projection of the third sub-data cable segment on a reference line extending along a second direction covers an orthogonal projection of the transparent display area on the reference line; 9. The display substrate of claim 1, further comprising a fifth transmission cable and a sixth transmission cable, wherein the fifth transmission cable is located on a first side of the transparent display area in the second direction, the sixth transmission cable is located on a second side of the transparent display area in the second direction, the first sub-data cable is connected to the third sub-data cable segment via the fifth transmission cable, and the second sub-data cable is connected to the third sub-data cable segment via the sixth transmission cable.

10. The display substrate of claim 9, wherein the fifth transmission cable and the sixth transmission cable are provided in the same layer as the first transmission cable.

11. The display substrate of claim 9, wherein the fourth sub-data cable segment is connected to the first transmission cable through a second via hole connection structure.

12. The display substrate of claim 9, wherein the base substrate further comprises a peripheral region surrounding the normal display region, and the fifth transmission cable is located in the peripheral region.

13. a plurality of power cables extending along the second direction and configured to supply a second power supply voltage to the plurality of pixel drive columns; a first conductive structure provided in the same layer as the plurality of power cables; 13. The display substrate of claim 1, wherein a positive projection of the first conductive structure on the base substrate overlaps a positive projection of the pixel driving circuit in the second pixel driving column that is not connected to the anode connecting cable, and the first conductive structure is connected to the first transmission cable via a third via hole connection structure.

14. each of the pixel driving circuits includes a second conductive structure provided in the same layer as the first transmission cable; 14. The display substrate of claim 1, wherein the second conductive structure of the pixel driving circuit in the second pixel driving column that is not connected to the anode connecting cable is connected to the second transmission cable through a fourth via hole connecting structure.

15. the base substrate further includes a peripheral region surrounding the normal display region, the display substrate further includes a power supply voltage cable located in the peripheral region, the power supply voltage cable being configured to transmit a first power supply voltage; 15. The display substrate according to claim 1, wherein at least one of the first transmission cable and the second transmission cable extends to the peripheral region and is electrically connected to the power supply voltage cable.

16. A display device comprising the display substrate according to any one of claims 1 to 15.

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