Display substrate and display device

Abstract

A display substrate and a display device, the display substrate (01) having a first side for display and a second side opposite to the first side, comprising a display area (10), the display area (10) comprising a first display area (11) and a second display area (12), the first display area (11) comprising a first light-emitting element (411) allowing light from the first side to be at least partially transmitted to the second side, the second display area (12) comprising a first pixel circuit (412), the first light-emitting element (411) being electrically connected to the first pixel circuit (412), The display substrate (01) includes a signal transmission line (110) and a first dummy wiring (121), the first light-emitting element (411) is connected to the first pixel circuit (412) via the signal transmission line (110), the first dummy wiring (121) is at least partially located within the first display region (11) and is insulated from the signal transmission line (110) and the first light-emitting element (411), and the orthogonal projection of the first dummy wiring (121) in a plane parallel to the display substrate (01) is at least partially offset from the orthogonal projection of the signal transmission line (110) in a plane parallel to the display substrate (01). The display substrate can improve the uniformity of light transmitted from the first side to the second side.

Description

[Technical Field]

[0001] This application claims priority from Chinese Patent Application No. 202010574224.9, filed on June 22, 2020, the entire contents of which are incorporated herein by reference.

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

[0003] Organic light-emitting diode (OLED) display devices have features such as a wide viewing angle, high contrast, fast response time, wide color gamut, high screen-to-body ratio, self-luminescence, light weight, and thinness. Due to these features and advantages, OLED display devices are gradually gaining widespread attention and can be applied to devices with display functions, such as mobile phones, displays, laptops, smart watches, digital cameras, instruments, and flexible wearable devices. With the further development of display technology, display devices with high screen-to-body ratios can no longer meet people's needs, and full-screen display devices have become the development trend of future display technology. Summary of the Invention

[0004] At least one embodiment of the present disclosure provides a display substrate, the display substrate having a first side for display and a second side opposite to the first side, and comprising a display area, the display area comprising a first display area and a second display area, the second display area at least partially surrounding the first display area, the first display area and the second display area not overlapping each other, the first display area comprising at least one first light emitting element allowing light from the first side to at least partially transmit to the second side, the second display area comprising at least one first pixel circuit, the first light emitting element electrically connected to the first pixel circuit, the display substrate The plate is provided with at least one signal transmission line and at least one first dummy wiring, the signal transmission line is at least partially located in the first display area and the second display area, the first light-emitting element is connected to the first pixel circuit via the signal transmission line, the first dummy wiring is at least partially located in the first display area and is insulated from the signal transmission line and the first light-emitting element, the signal transmission line and the first dummy wiring each extend along a first direction, and the orthogonal projection of the first dummy wiring in a plane parallel to the display substrate is at least partially offset from the orthogonal projection of the signal transmission line in a plane parallel to the display substrate.

[0005] For example, in a display substrate according to an embodiment of the present disclosure, the first dummy wiring and the signal transmission line are located in the same layer.

[0006] For example, in a display substrate according to an embodiment of the present disclosure, both the first dummy wirings and the signal transmission lines extend along straight lines and are parallel to each other.

[0007] For example, in a display substrate according to one embodiment of the present disclosure, the at least one first dummy wiring comprises a plurality of first dummy wirings arranged along a second direction different from the first direction and configured to receive a first voltage signal, and the display substrate further comprises at least one second dummy wiring extending along the second direction and electrically connected to the plurality of first dummy wirings so as to electrically connect the plurality of first dummy wirings to each other and receive the first voltage signal.

[0008] For example, in a display substrate according to an embodiment of the present disclosure, at least one of the plurality of first dummy wirings is electrically connected to a first power supply line that provides the first voltage signal through a via structure.

[0009] For example, in a display substrate according to one embodiment of the present disclosure, the second dummy wiring and the first dummy wiring are located in the same layer, or the second dummy wiring and the first dummy wiring are located in different film layers, and the different film layers are insulated from each other at positions where no vias are provided.

[0010] For example, in a display substrate according to one embodiment of the present disclosure, the at least one signal transmission line comprises a plurality of signal transmission lines arranged along the second direction, the plurality of signal transmission lines and the plurality of first dummy wirings form a wiring array, one signal transmission line functions as one line unit of the wiring array, one first dummy wiring functions as one line unit of the wiring array, and the distance between at least one line unit of the wiring array and an adjacent line unit in the second direction is equal.

[0011] For example, in a display substrate according to one embodiment of the present disclosure, the first display region comprises an intermediate region and peripheral regions located on both sides of the intermediate region in the first direction, the central axis of the first display region is located within the intermediate region, the peripheral region is adjacent to the second display region, and the distribution ratio per unit area of ​​the plurality of first dummy wirings in the intermediate region is greater than the distribution ratio per unit area of ​​the plurality of first dummy wirings in the peripheral region.

[0012] For example, in a display substrate according to an embodiment of the present disclosure, the signal transmission lines, the first dummy wirings, and the second dummy wirings each include a transparent conductive wiring.

[0013] For example, in a display substrate according to an embodiment of the present disclosure, the width of the first dummy wiring in a second direction different from the first direction is the same as the width of the signal transmission line in the second direction.

[0014] For example, in a display substrate according to one embodiment of the present disclosure, the signal transmission line is electrically connected to the anode of the first light-emitting element through a via structure that penetrates at least an insulating layer located between the signal transmission line and the anode of the first light-emitting element.

[0015] For example, in a display substrate according to one embodiment of the present disclosure, the orthogonal projection of the via structure in a plane parallel to the display substrate does not overlap with the orthogonal projection of the at least one first dummy wiring in a plane parallel to the display substrate.

[0016] For example, in a display substrate according to one embodiment of the present disclosure, the first pixel circuit includes a thin film transistor, the thin film transistor includes a gate, a first pole, and a second pole, and the signal transmission line is electrically connected to the first pole or the second pole of the thin film transistor.

[0017] For example, a display substrate according to one embodiment of the present disclosure further includes a source / drain metal layer, wherein the first and second electrodes of the thin film transistor are located on the source / drain metal layer, the anode of the first light-emitting element is located on the source / drain metal layer, and a film layer in which the signal transmission line and the first dummy wiring are located is located between the anode of the first light-emitting element and the source / drain metal layer.

[0018] For example, in a display substrate according to one embodiment of the present disclosure, the display region further includes a third display region, the third display region at least partially surrounds the second display region, the first display region, the second display region, and the third display region do not overlap each other, the second display region further includes at least one second light-emitting element and at least one second pixel circuit, the second light-emitting element is electrically connected to the second pixel circuit, the third display region includes at least one third light-emitting element and at least one third pixel circuit, and the third light-emitting element is electrically connected to the third pixel circuit.

[0019] For example, in a display substrate according to an embodiment of the present disclosure, the first light emitting element, the second light emitting element, and the third light emitting element each include an organic light emitting diode.

[0020] For example, in a display substrate according to one embodiment of the present disclosure, the at least one first light-emitting element comprises a plurality of first light-emitting elements, the at least one second light-emitting element comprises a plurality of second light-emitting elements, and the at least one third light-emitting element comprises a plurality of third light-emitting elements, and the distribution density per unit area of ​​the plurality of first light-emitting elements in the first display region is equal to or less than the distribution density per unit area of ​​the plurality of second light-emitting elements in the second display region, and the distribution density per unit area of ​​the plurality of second light-emitting elements in the second display region is smaller than the distribution density per unit area of ​​the plurality of third light-emitting elements in the third display region.

[0021] For example, in a display substrate according to one embodiment of the present disclosure, the ratio of the area of ​​the first display region that is covered by the orthogonal projection of the at least one signal transmission line in a plane parallel to the display substrate and the orthogonal projection of the at least one first dummy wiring in a plane parallel to the display substrate to the area of ​​the first display region is 70% to 95%.

[0022] At least one embodiment of the present disclosure further provides a display device including the display substrate according to any one of the embodiments of the present disclosure.

[0023] For example, a display device according to an embodiment of the present disclosure further includes a sensor located on the second side of the display substrate and configured to receive light from the first side of the display substrate.

[0024] For example, in a display device according to an embodiment of the present disclosure, the orthogonal projection of the sensor on the display substrate at least partially overlaps with the first display area.

[0025] In order to more clearly explain the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly described below. It should be apparent that the drawings described below are only related to some embodiments of the present disclosure and are not intended to limit the present disclosure. [Brief explanation of the drawings]

[0026] [Figure 1] FIG. 1 is a schematic plan view of a display substrate according to at least one embodiment of the present disclosure. [Figure 2A] FIG. 2A is a schematic plan view of the first display region and the second display region of the display substrate shown in FIG. [Figure 2B] FIG. 2B is a schematic diagram showing the arrangement of light-emitting elements and pixel circuits in the first and second display regions shown in FIG. 2A. [Figure 3] FIG. 3 is a schematic diagram of an example of the first display region and the second display region of the display substrate shown in FIG. 2A. [Figure 4] FIG. 4 is an enlarged view of the partial region REG1 of FIG. [Figure 5] FIG. 5 is an enlarged view of the partial region REG2 of FIG. [Figure 6] FIG. 6 is a schematic diagram of an example of a portion near an edge of a display area of ​​a display substrate according to at least one embodiment of the present disclosure. [Figure 7] FIG. 7 is a schematic diagram of the light-transmitting region of the display substrate. [Figure 8] FIG. 8 is a schematic diagram of a laminated structure of a display substrate according to at least one embodiment of the present disclosure. [Figure 9] FIG. 9 is an enlarged view of a partial region REG3 of the third display region of the display substrate shown in FIG. [Figure 10] FIG. 10 is a schematic block diagram of a display device in accordance with at least one embodiment of the present disclosure. [Figure 11] FIG. 11 is a schematic diagram of a stacked structure of a display device according to at least one embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0027] In order to clarify the objectives, technical solutions and advantages of the embodiments of the present disclosure, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings of the embodiments of the present disclosure. It is obvious that the described embodiments are only a part of the embodiments of the present disclosure, but not all of the embodiments. Based on the described embodiments of the present disclosure, other embodiments obtained by those skilled in the art without requiring creative work all fall within the protection scope of the present disclosure.

[0028] Unless otherwise defined, technical or scientific terms used in this disclosure should have common meanings that can be understood by those skilled in the art. The terms "first," "second," and similar terms used in this disclosure do not denote any order, number, or importance, but are merely used to distinguish between different components. Similarly, similar terms such as "one," "an," or "the" do not limit the number but mean the presence of at least one. Similar terms such as "comprise" or "include" refer to the element or component described before the term including the element or component listed thereafter and their equivalents, without excluding other elements or components. Similar terms such as "connect" or "coupled" are not limited to physical or mechanical connections and may include electrical connections, whether directly or indirectly connected. Terms such as "top," "bottom," "left," and "right" are used only to indicate relative positions, and if the absolute position of the described object changes, the relative positions may also change accordingly.

[0029] For a current display substrate equipped with an under-screen sensor (e.g., a camera), in order to improve the light transmittance of a display area of ​​the display substrate corresponding to the under-screen sensor, the pixel pitch (PPI) of the light-emitting elements in the display area corresponding to the under-screen sensor may be smaller than the pixel pitch (PPI) of the light-emitting elements in other display areas of the display substrate.

[0030] However, because the distribution density per unit area of ​​light-emitting elements in different regions of a display substrate is different, the arrangement of light-emitting elements and corresponding pixel circuits in different regions is also different. For example, since light-emitting elements in a display region corresponding to an under-screen sensor need to be electrically connected to corresponding pixel circuits in other display regions, it is difficult to uniformly arrange wiring in the display region corresponding to the under-screen sensor. This affects the light transmittance of the display region corresponding to the under-screen sensor, for example, reduces the uniformity of light passing through the region, and further increases the likelihood of problems such as reflection when the under-screen sensor receives light. This makes it difficult to accurately perform operations such as image capture, distance detection, and light intensity detection, and adversely affects the performance of a display device using the display substrate.

[0031] At least one embodiment of the present disclosure provides a display substrate, the display substrate having a first side for display and a second side opposite to the first side, and comprising a display area, the display area comprising a first display area and a second display area, the second display area at least partially surrounding the first display area, the first display area and the second display area not overlapping each other, the first display area comprising at least one first light-emitting element and allowing light from the first side to at least partially transmit to the second side, the second display area comprising at least one first pixel circuit, the first light-emitting element being electrically connected to the first pixel circuit; The display substrate is provided with at least one signal transmission line and at least one first dummy wiring, the signal transmission line is at least partially located in the first display area and the second display area, the first light-emitting element is connected to the first pixel circuit via the signal transmission line, the first dummy wiring is at least partially located in the first display area and is insulated from the signal transmission line and the first light-emitting element, the signal transmission line and the first dummy wiring each extend along a first direction, and the orthogonal projection of the first dummy wiring in a plane parallel to the display substrate is at least partially offset from the orthogonal projection of the signal transmission line in a plane parallel to the display substrate.

[0032] The display substrate according to at least one embodiment of the present disclosure optimizes the wiring design in the first display area, thereby improving the light transmittance of the first display area and enhancing the uniformity and consistency of light passing through the first display area. For example, the first display area may be a display area corresponding to an under-screen sensor (e.g., a camera), whereby the display substrate according to the embodiment of the present disclosure can reduce or avoid problems such as reflection that may occur when the under-screen sensor receives light, thereby helping the under-screen sensor to accurately perform operations such as image capture, distance detection, and light intensity detection, and further improving the performance of a display device (e.g., a full-screen display device) using the display substrate.

[0033] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings, in which like reference numerals are used in different drawings to denote like elements illustrated.

[0034] 1 is a schematic plan view of a display substrate according to at least one embodiment of the present disclosure. As shown in FIG. 1, the display substrate 01 includes a display area 10, which includes a first display area 11 and a second display area 12. For example, the first display area 11 and the second display area 12 do not overlap each other, and the second display area 12 at least partially surrounds (e.g., completely surrounds) the first display area 11.

[0035] For example, the display substrate 01 has a first side for display and a second side opposite the first side. For example, in some examples, as shown in FIG. 1, the first side is the front side of the display substrate 01 (i.e., the plane shown in FIG. 1), and the second side is the back side of the display substrate. For example, a sensor may be provided on the second side of the display substrate 01 at a position corresponding to the first display area 11, and the sensor may be an image sensor, an infrared sensor, or the like. The sensor is configured to receive light from the first side of the display substrate 01, thereby performing operations such as image capture, distance detection, and light intensity detection.

[0036] Fig. 2A is a schematic plan view of the first and second display regions of the display substrate shown in Fig. 1, and Fig. 2B is a schematic view of the layout of light-emitting elements and pixel circuits in the first and second display regions shown in Fig. 2A. Note that, in order to clearly and concisely describe the layout of the light-emitting elements and pixel circuits in the first and second display regions, the rectangular frames indicated by symbols in Fig. 2B are merely intended to indicate the general positions of the light-emitting elements and pixel circuits, and do not represent the specific shapes or specific boundaries of the light-emitting elements and pixel circuits. Furthermore, the rectangular frames in Fig. 2B are merely intended to describe the layout of the light-emitting elements and pixel circuits, and do not represent the actual number of light-emitting elements and pixel circuits in the first and second display regions. The specific structures of the light-emitting elements and pixel circuits may be referenced to conventional designs in the art, and the embodiments of the present disclosure are not limited thereto.

[0037] For example, as shown in FIGS. 1, 2A, and 2B, second display area 12 at least partially surrounds (eg, completely surrounds) first display area 11.

[0038] For example, the shape of the first display area 11 may be circular or elliptical, and the shape of the second display area 12 may be rectangular, but the embodiments of the present disclosure are not limited thereto. Further, for example, the shapes of the first display area 11 and the second display area 12 may both be rectangular or any other suitable shape.

[0039] Fig. 3 is a schematic diagram of an example of the first display region and the second display region of the display substrate shown in Fig. 2A, Fig. 4 is an enlarged view of the partial region REG1 of Fig. 3, and Fig. 5 is an enlarged view of the partial region REG2 of Fig. 3. Note that in order to clearly and concisely explain the connection relationship between the first light-emitting element and the first pixel circuit, Fig. 5 only shows the structures of the light-emitting element, pixel circuit, signal transmission line, etc., but this does not limit the embodiments of the present disclosure.

[0040] For example, as shown in FIGS. 2A to 5, the first display region 11 includes at least one (e.g., multiple) first light-emitting element 411. For clarity, the related drawings use the anode structure of the first light-emitting element 411 to schematically illustrate the first light-emitting element 411. For example, the first display region 11 includes multiple first light-emitting elements 411 arranged in an array, and the first light-emitting elements 411 are configured to emit light. For example, the first display region 11 does not include a pixel circuit, and a pixel circuit (i.e., a first pixel circuit 412) for driving the first light-emitting element 411 is provided in the second display region 12, thereby reducing the metallization area of ​​the first display region 11 and improving the light transmittance of the first display region 11. The pixel circuit for driving the first light-emitting element 411 will be described below and will not be described again here.

[0041] For example, a plurality of first light-emitting elements 411 may be provided in a plurality of light-emitting units, and these light-emitting units may be arranged in an array. For example, each light-emitting unit may include one or more first light-emitting elements 411. For example, the plurality of first light-emitting elements 411 may emit light of the same color or light of different colors, such as white light, red light, blue light, and green light. This can be determined according to actual needs, and the embodiments of the present disclosure are not limited thereto. For example, the arrangement of the plurality of first light-emitting elements 411 may refer to the arrangement of common pixel units, such as GGRB, RGBG, and RGB, and the embodiments of the present disclosure are not limited thereto.

[0042] For example, the first display area 11 allows light from a first side of the display substrate 01 to at least partially transmit to a second side of the display substrate 01. In this way, it is easy to provide a sensor on the second side of the display substrate 01 at a position corresponding to the first display area 11, and the sensor can receive light from the first side, thereby performing operations such as image capture, distance sensing, light intensity sensing, etc.

[0043] For example, as shown in FIGS. 2A to 5, the second display region 12 includes at least one (e.g., a plurality of) first pixel circuits 412, and the first light-emitting elements 411 are electrically connected to the first pixel circuits 412. For example, the first light-emitting elements 411 are electrically connected to the first pixel circuits 412 in a one-to-one correspondence, and the plurality of first pixel circuits 412 are used to drive the plurality of first light-emitting elements 411 in a one-to-one correspondence. That is, one first pixel circuit 412 drives one corresponding first light-emitting element 411, and different first pixel circuits 412 drive different first light-emitting elements 411. For example, the plurality of first pixel circuits 412 may be provided in a plurality of first pixel driving units, and the rectangular frames (white-filled areas with black frames indicated by reference numerals 412) shown in FIG. 5 represent the first pixel driving units, and these first pixel driving units are arranged in an array.

[0044] 3, 4 and 5, the first pixel driving unit may include one or more first pixel circuits 412. When a light-emitting unit in the first display area 11 includes one first light-emitting element 411, the first pixel driving unit also includes one first pixel circuit 412. When a light-emitting unit in the first display area 11 includes multiple first light-emitting elements 411, the first pixel driving unit also includes multiple first pixel circuits 412, and the number of first light-emitting elements 411 in each light-emitting unit is, for example, equal to the number of first pixel circuits 412 in each first pixel driving unit, thereby realizing one-to-one corresponding driving.

[0045] For example, the plurality of first light-emitting elements 411 are arranged in an array, and the plurality of first pixel circuits 412 are also arranged in an array. Here, "arranged in an array" may refer to a plurality of devices being grouped together and the plurality of device groups being arranged in an array, or may refer to a plurality of devices themselves being arranged in an array, and the embodiments of the present disclosure are not limited thereto. For example, in some examples, as shown in FIGS. 3, 4, and 5, every four first light-emitting elements 411 are grouped together, and the plurality of sets of first light-emitting elements 411 are arranged in an array, and correspondingly, every four first pixel circuits 412 are grouped together, and the plurality of sets of first pixel circuits 412 are arranged in an array, and in this case, each first pixel driving unit is provided with four first pixel circuits 412.

[0046] 3, 4, and 5, the display substrate 01 is provided with at least one (e.g., a plurality of) signal transmission lines 110 and at least one (e.g., a plurality of) first dummy wirings 121. The signal transmission line 110 is at least partially located in the first display area 11 and the second display area 12, and the first light-emitting element 411 is connected to the first pixel circuit 412 via the signal transmission line 110. For example, the signal transmission line 110 has a first end located in the first display area 11 and electrically connected to the first light-emitting element 411, and a second end located in the second display area 12 and electrically connected to the first pixel circuit 412, thereby realizing electrical connection between the first light-emitting element 411 and the first pixel circuit 412. The first dummy wiring 121 is at least partially located within the first display area 11, and may, for example, be located only within the first display area 11 or may extend into the second display area 12, and the first dummy wiring 121 is insulated from the signal transmission line 110 and the first light-emitting element 411.

[0047] For example, the signal transmission line 110 and the first dummy wiring 121 each extend along the first direction R1, and the orthogonal projection of the first dummy wiring 121 in a plane parallel to the display substrate 01 is at least partially offset from the orthogonal projection of the signal transmission line 110 in a plane parallel to the display substrate 01. For example, the orthogonal projection of the first dummy wiring 121 in a plane parallel to the display substrate 01 and the orthogonal projection of the signal transmission line 110 in a plane parallel to the display substrate 01 do not overlap each other, so that the first dummy wiring 121 and the signal transmission line 110 can cover different regions of the first display area 11, further improving the uniformity and consistency of the wiring layout in the first display area 11, thereby improving the light transmittance of the first display area 11, the uniformity and consistency of the light transmitted through the first display area 11, and further improving the etching uniformity of the display substrate 01 in the first display area 11.

[0048] For example, take the light-transmitting region LR of the display substrate shown in Figure 7 as an example. The distribution of the wiring in the light-transmitting region LR is relatively uneven, which reduces the uniformity and consistency of the light transmitted through the light-transmitting region LR, and further adversely affects the light transmission effect of the light-transmitting region LR. For example, problems such as reflection are likely to occur when the under-screen sensor provided corresponding to the light-transmitting region LR receives light, making it difficult to accurately perform operations such as image capture, distance detection, and light intensity detection.

[0049] 7 , the display substrate 01 according to the above embodiment of the present disclosure has first dummy wirings 121 that do not overlap with the signal transmission lines 110 in a plane parallel to the display substrate 01, thereby optimizing the wiring design in the first display region 11, for example, improving the uniformity and consistency of the wiring layout in the first display region 11, thereby improving the uniformity and consistency of light passing through the first display region 11 and further improving the light transmittance of the first display region 11. For example, when an under-screen sensor (e.g., a camera) is provided corresponding to the first display region 11, the display substrate 01 according to the above embodiment of the present disclosure can reduce or avoid problems such as reflection that may occur when the under-screen sensor receives light, thereby helping the under-screen sensor to accurately perform operations such as image capture, distance detection, and light intensity detection, and further improving the performance of a display device (e.g., a full-screen display device) using the display substrate 01.

[0050] In some embodiments of the present disclosure, the ratio of the area of ​​the first display region 11 covered by the orthogonal projection of the signal transmission lines 110 in a plane parallel to the display substrate 01 and the orthogonal projection of the first dummy wirings 121 in a plane parallel to the display substrate 01 to the area of ​​the first display region 11 is 70% to 95%, and may further be, for example, 80% to 90%, or even 75% or 85%. That is, the signal transmission lines 110 and the first dummy wirings 121 together cover 70% to 95% of the total area of ​​the first display region 11 in a plane parallel to the display substrate 01, thereby further improving the uniformity and consistency of the wiring layout in the first display region 11, improving the uniformity and consistency of light transmitted through the first display region 11, and improving the light transmission effect of the first display region 11.

[0051] In some embodiments of the present disclosure, as shown in Figures 3, 4 and 5, the first dummy wiring 121 and the signal transmission line 110 may be located on the same layer, thereby simplifying the manufacturing process of the display substrate 01 and reducing the manufacturing cost of the display substrate 01.

[0052] In some other embodiments of the present disclosure, depending on various actual needs, such as increasing the signal transmission load on the signal transmission line or further simplifying the manufacturing process, the first dummy wiring and the signal transmission line may be located on different layers, or a portion of the first dummy wiring may be provided on the same layer as the signal transmission line and another portion may be provided on a layer different from the signal transmission line, and the embodiments of the present disclosure are not limited thereto.

[0053] In the description of the present disclosure, being located in the "same layer" refers to being located in the same film layer. For example, wiring located in the same film layer may be manufactured by the same process, for example, the required wiring is formed in a single patterning process. For example, if the display substrate 01 includes a base substrate, the distance between the wiring located in the same film layer and the base substrate in the direction perpendicular to the base substrate is the same or approximately the same. That is, the distance between the wiring in the film layer and the base substrate is the same or approximately the same. In the following description, the meaning of being located in the "same layer" can be understood by referring to the above description, and will not be repeated.

[0054] In the present disclosure, being located on "different layers" refers to being located on different film layers, and these different film layers are insulated from each other where vias are not provided. For example, when wirings located on different film layers need to be electrically connected to each other, vias are provided to achieve the electrical connection of the wirings located on the different film layers. For example, these different film layers may be manufactured using different processes, for example, first manufacturing one of these different film layers in a first process, and then manufacturing another of these different film layers in a second process. For example, after the first process is performed and before the second process is performed, an insulating layer may be manufactured in a third process. The insulating layer is located between the different film layers, thereby insulating the different film layers from each other where vias are not provided. For example, the first process, the second process, and the third process may be the same or different. For example, if the display substrate 01 includes a base substrate, the distances between the different film layers and the base substrate are different in a direction perpendicular to the base substrate. That is, one of the different film layers is closer to the base substrate, and the other is farther from the base substrate. In the following description, the meaning of being located on "different layers" can be understood by referring to the above description, and will not be repeated.

[0055] In some embodiments of the present disclosure, as shown in Figures 3, 4 and 5, both the first dummy wiring 121 and the signal transmission line 110 extend along a straight line and are parallel to each other, which further contributes to the uniformity and consistency of the layout of the first dummy wiring 121 and the signal transmission line 110 in the first display area 11, further simplifies the process requirements of the display substrate 01, and further contributes to the manufacture of the display substrate 01.

[0056] In addition, in some other embodiments of the present disclosure, depending on the actual needs of the light-emitting elements or other structures in the first display area 11, the device layout design, etc., the first dummy wiring 121 or the signal transmission line 110 may extend along a curve, a bent line, or other suitable shape, or the extension line of the first dummy wiring 121 and the extension line of the signal transmission line 110 may cross each other, and the embodiments of the present disclosure are not limited thereto.

[0057] In some embodiments of the present disclosure, the first dummy wiring 121 may be configured to receive a first voltage signal (e.g., a high-level signal or a low-level signal such as a ground signal) or may be configured to be in a floating state, and the embodiments of the present disclosure are not limited thereto. For example, if the first dummy wiring 121 receives a high-level signal or a low-level signal, the first dummy wiring 121 can reduce or avoid signal crosstalk between the signal transmission lines 110, thereby improving the uniformity and stability of the circuit environment and the signal transmission effect of the signal transmission lines 110.

[0058] 3, 4, and 5, the plurality of first dummy wirings 121 in the first display region 11 are arranged along a second direction R2 different from the first direction R1 and configured to receive a first voltage signal. The display substrate further includes at least one (e.g., a plurality of) second dummy wirings 122 extending along the second direction R2 and electrically connected to the plurality of first dummy wirings 121 to electrically connect the plurality of first dummy wirings 121 to each other and receive the first voltage signal. This improves the electrical connection effect between the plurality of first dummy wirings 121 and further enhances the uniformity and stability of the circuit environment.

[0059] The angle between the first direction R1 and the second direction R2 may be, for example, 70° to 90°, including 70° and 90°. For example, the angle between the first direction R1 and the second direction R2 may be 70°, 75°, 85°, 90°, or 80°, and the specific value of the angle may be set according to actual circumstances, and the embodiments of the present disclosure are not limited thereto.

[0060] For example, at least one of the multiple first dummy wirings 121 is electrically connected to a first power supply line that provides a first voltage signal through a via structure, and for example, the first power supply line may be a power supply line for providing a first voltage signal for display to the first pixel circuit 412, thereby simplifying the wiring layout of the display substrate 01 and optimizing the structural design of the display substrate 01.

[0061] 6 is a schematic diagram of an example of a portion near an edge of a display area of ​​a display substrate according to at least one embodiment of the present disclosure, and for example, the portion shown in Fig. 6 may be located in the partial region REG4 shown in Fig. 3. For example, among the multiple first dummy wirings 121, one first dummy wiring 121A near the edge of the display substrate 01 in the second direction R2 is electrically connected to the first power line LVDD through a via structure H3 to receive a first voltage signal, and transmits the received first voltage signal to other first dummy wirings 121 and / or second dummy wirings 122 through a second dummy wiring 122A connected to the first dummy wiring 121A.

[0062] Note that the shape, position, and overlap area of ​​the first power supply wiring LVDD with the first dummy wiring 121A in FIG. 6 are merely illustrative, and the embodiments of the present disclosure do not limit the specific shape, installation location, etc. of the first power supply wiring LVDD. In some embodiments of the present disclosure, the first power supply wiring LVDD may be electrically connected to only one first dummy wiring 121A as shown in FIG. 6. However, in other embodiments of the present disclosure, the first power supply wiring LVDD may be electrically connected to a plurality of first dummy wirings 121A, such as two, three, or four, and the embodiments of the present disclosure are not limited thereto. In some embodiments of the present disclosure, the via structure H3 for achieving electrical connection between the first power supply wiring LVDD and the first dummy wiring 121A may include only one via as shown in FIG. 6. However, in other embodiments of the present disclosure, the via structure H3 for achieving electrical connection between the first power supply wiring LVDD and the first dummy wiring 121A may include a plurality of vias, such as two, three, or four, and the embodiments of the present disclosure are not limited thereto.

[0063] 4, the second dummy wiring 122 may be located on the same layer as the first dummy wiring 121, thereby simplifying the manufacturing process and reducing manufacturing costs, or in some other embodiments of the present disclosure, the second dummy wiring 122 may be located on a different layer from the first dummy wiring 121, for example, the second dummy wiring 122 and the first dummy wiring 121 may be located on different film layers, and the different film layers may be insulated from each other at positions where no vias are provided, thereby reducing or avoiding signal crosstalk between the wirings. The embodiments of the present disclosure are not limited thereto.

[0064] For example, as shown in Figures 3, 4 and 5, a plurality of first dummy wirings 121 are arranged along the second direction R2, a plurality of signal transmission lines 110 are arranged along the second direction R2, the plurality of signal transmission lines 110 and the plurality of first dummy wirings 121 form a wiring array, one signal transmission line 110 functions as one line unit 140 of the wiring array, one first dummy wiring 121 functions as one line unit 140 of the wiring array, and the distance between at least one line unit 140 of the wiring array and an adjacent line unit 140 in the second direction R2 is equal. That is, the distance between at least one first dummy wiring 121 or signal transmission line 110 among the plurality of first dummy wirings 121 and the plurality of signal transmission lines 110 and two wirings (these two wirings may be the first dummy wirings 121 and / or the signal transmission line 110) adjacent to each other in the second direction R2 (for example, located on both sides thereof in the second direction R2) is equal. This makes it possible to further optimize the wiring design in the first display region 11 and further improve the uniformity and consistency of the wiring layout in the first display region 11, thereby further improving the uniformity and consistency of the light transmitting through the first display region 11 and improving the light transmittance of the first display region 11.

[0065] For example, as shown in Figures 3, 4 and 5, in the first display area 11, the distance between each signal transmission line 110 and two adjacent wirings in the second direction R2 (these two wirings may be the first dummy wirings 121 and / or the signal transmission line 110) is equal, thereby improving the uniformity and consistency of the wiring layout in the first display area 11, and further improving the uniformity and stability of the circuit environment, thereby improving the signal transmission effect of the signal transmission line 110.

[0066] 2A to 5, the first display region 11 includes an intermediate region 1101 and peripheral regions 1102 located on both sides of the intermediate region 1101 in the first direction R1 (for example, completely surrounding the intermediate region 1101 in the first direction R1), a central axis L11 of the first display region 11 is located within the intermediate region 1101, the peripheral region 1102 is adjacent to the second display region 12, and the distribution ratio per unit area of ​​the plurality of first dummy wirings 121 in the intermediate region 1101 is greater than the distribution ratio per unit area of ​​the plurality of first dummy wirings 121 in the peripheral region 1102. For example, along a direction from the peripheral region 1102 to the intermediate region 1101 in the first display region 11 (for example, a direction from an edge of the first display region 11 in the first direction R1 to the central axis L11), the distribution ratio per unit area of ​​the plurality of first dummy wirings 121 gradually increases. The distribution ratio per unit area of ​​the multiple signal transmission lines 110 in the intermediate region 1101 is smaller than the distribution ratio per unit area of ​​the multiple signal transmission lines 110 in the peripheral region 1102. For example, along the direction from the peripheral region 1102 to the intermediate region 1101 in the first display region 11, the distribution ratio per unit area of ​​the multiple signal transmission lines 110 gradually decreases. Therefore, in the display substrate 01 according to the embodiment of the present disclosure, the distribution pattern of the first dummy wirings 121 in the first display region 11 can be adapted to the distribution pattern of the signal transmission lines 110 in the first display region 11, thereby further optimizing the wiring design in the first display region 11 and further improving the uniformity and consistency of the wiring layout in the first display region 11. This further improves the uniformity and consistency of the light transmitting through the first display region 11 and improves the light transmittance of the first display region 11.

[0067] The above-mentioned "distribution ratio per unit area" refers to the distribution area of ​​the wiring per unit area; in other words, the larger the distribution ratio per unit area, the larger the area that the wiring covers within the region per unit area; for example, if the lengths of the wiring are approximately the same, the wiring will be denser and more numerous within the corresponding region; and the smaller the distribution ratio per unit area, the smaller the area that the wiring covers within the region per unit area; for example, if the lengths of the wiring are approximately the same, the wiring will be sparser and less numerous within the corresponding region.

[0068] In some embodiments of the present disclosure, the signal transmission line 110, the first dummy wiring 121, and the second dummy wiring 122 may each comprise a transparent conductive wiring, which can further improve the light transmittance of the first display area 11 of the display substrate 01. The transparent conductive wiring may be made of indium tin oxide (ITO) or other suitable transparent conductive materials.

[0069] In some embodiments of the present disclosure, the width of the first dummy wiring 121 in the second direction R2 is the same as the width of the signal transmission line 110 in the second direction R2, thereby further improving the uniformity and consistency of the distribution of the first dummy wiring 121 and the signal transmission line 110 in the first display area 11, improving the uniformity and stability of the circuit environment, and thereby improving the signal transmission effect of the signal transmission line 110.

[0070] In some embodiments of the present disclosure, as shown in Figures 3, 4 and 5, the signal transmission line 110 is electrically connected to the anode of the first light-emitting element 411 through a via structure H1 that penetrates at least an insulating layer located between the signal transmission line 110 and the anode of the first light-emitting element 411, thereby providing an electrical signal to the first light-emitting element 411 to drive the first light-emitting element 411 to emit light.

[0071] For example, the orthogonal projection of the via structure H1 in a plane parallel to the display substrate 01 and the orthogonal projection of the first dummy wiring 121 in a plane parallel to the display substrate 01 do not overlap each other, and for example, the first dummy wiring 121 is arranged to avoid the position of the via structure H1 as much as possible in a direction perpendicular to the display substrate 01. This reduces or avoids interference that the first dummy wiring 121 may cause to the electrical signal provided to the first light-emitting element 411, thereby improving the operational stability of the first light-emitting element 411 and the light-emitting effect of the first light-emitting element 411.

[0072] In addition, based on the actual structure of the display substrate 01, the via structure H1 can also penetrate other film layers or structures, etc., located between the signal transmission line 110 and the anode of the first light-emitting element 411 other than the insulating layer, to realize the electrical connection between the signal transmission line 110 and the anode of the first light-emitting element 411, and the embodiments of the present disclosure are not limited thereto.

[0073] For example, the first pixel circuit 412 includes a thin film transistor, the thin film transistor including a gate, a first pole and a second pole, and the signal transmission line 110 is electrically connected to the first pole or the second pole of the thin film transistor to provide an output signal of the first pixel circuit 412 to the first light-emitting element 411. For example, based on the circuit structure of the first pixel circuit 412, the thin film transistor may be a driving thin film transistor of the first pixel circuit 412, a light-emitting control thin film transistor of the first pixel circuit 412, or another type of thin film transistor.

[0074] 8 is a schematic diagram of a stacked structure of a display substrate according to at least one embodiment of the present disclosure, and the stacked structure schematic diagram mainly shows a partial structure of the first pixel circuit 412 and the first light-emitting element 411. For example, FIG. 8 may be a schematic diagram of a cross-sectional structure of the display substrate 01 taken along line A-A' shown in FIG.

[0075] For example, as shown in Figures 5 and 8, the display substrate 01 has a source-drain metal layer (SD layer) located on the base substrate 101, and the first and second poles (i.e., source-drain electrodes, for example, source 4123 and drain 4124) of the thin film transistor 412T of the first pixel circuit 412 are located on the source-drain metal layer.

[0076] The first light-emitting element 411 includes an anode 4111, a cathode 4113, and a light-emitting layer 4112 located between the anode 4111 and the cathode 4113. The anode 4111 of the first light-emitting element 411 is located on the source-drain metal layer, and a film layer in which the signal transmission line 110 and the first dummy wiring 121 (not shown in FIG. 8) are located is located between the anode 4111 and the source-drain metal layer of the first light-emitting element 411. The anode 4111 is electrically connected to the signal transmission line 110 through a via structure H1, and is further electrically connected to a thin-film transistor 412T included in the first pixel circuit 412 through the signal transmission line 110.

[0077] For example, the anode 4111 may include multiple anode sub-layers, such as a three-layer structure of ITO / Ag / ITO (not shown), and the embodiments of the present disclosure do not limit the specific form of the anode 4111. For example, the cathode 4113 may have a structure formed on the entire surface of the display substrate 01, and the cathode 4113 may include a metal material such as lithium (Li), aluminum (Al), magnesium (Mg), or silver (Ag). For example, because the cathode 4113 is formed as a very thin layer, the cathode 4113 has excellent light transmittance.

[0078] For example, the thin film transistor 412T has structures such as an active layer 4121, a gate 4122, and source / drain electrodes (i.e., a source 4123 and a drain 4124). For example, the active layer 4121 is provided on the base substrate 101, and a first gate insulating layer 741 is provided on the side of the active layer 4121 that faces away from the base substrate 101. The gate 4122 is located on the side of the first gate insulating layer 741 that faces away from the base substrate 101, and a second gate insulating layer 742 is provided on the side of the gate 4122 that faces away from the base substrate 101. The source / drain electrodes are provided on the side of the interlayer insulating layer 743 that faces away from the base substrate 101, and are electrically connected to the active layer 4121 through vias located in the first gate insulating layer 741, the second gate insulating layer 742, and the interlayer insulating layer 743. A planarization layer 744 is provided on the side of the source / drain electrodes that faces away from the base substrate 101, thereby planarizing the first pixel circuit 412.

[0079] For example, there is a via H2 in the planarization layer 744, and the drain 4124 (or source 4123) of the thin-film transistor 412T is electrically connected to the signal transmission line 110 through the via H2 in the planarization layer 744, and further electrically connected to the anode 4111 through the signal transmission line 110.

[0080] For example, the first display region 11 further includes a transparent support layer 78 located on the base substrate 101, and the first light-emitting element 411 is located on the side of the transparent support layer 78 that is away from the base substrate 101. As a result, with respect to the base substrate 101, the first light-emitting element 411 of the first display region 11 may be at approximately the same height as the second light-emitting element of the second display region 12 (see the following description of the second display region 12 and the second light-emitting element 412) and the third light-emitting element of the third display region (see the following description of the third display region 13 and the third light-emitting element 413), thereby improving the display effect of the display substrate 101.

[0081] For example, the display substrate 01 further includes structures such as a pixel definition layer 746 and a package layer 747. For example, the pixel definition layer 746 is disposed on the anode 4111 (for example, a partial structure of the anode 4111) and includes a plurality of openings to define different pixels or sub-pixels, and the first light-emitting layer 4112 is formed in the openings of the pixel definition layer 746. For example, the package layer 747 may include a single-layer or multi-layer package structure, and the multi-layer package structure may include, for example, a stack of an inorganic package layer and an organic package layer, thereby improving the package effect of the display substrate 01.

[0082] For example, in each embodiment of the present disclosure, the base substrate 101 may be a glass substrate, a quartz substrate, a metal substrate, a resin substrate, etc., and may be a rigid substrate or a flexible substrate, although the embodiments of the present disclosure are not limited thereto.

[0083] For example, the first gate insulating layer 741, the second gate insulating layer 742, the interlayer insulating layer 743, the planarizing layer 744, the insulating layer 745, the pixel defining layer 746, and the packaging layer 747 may include inorganic insulating materials such as silicon oxide, silicon nitride, silicon oxynitride, etc., or may include organic insulating materials such as polyimide, polyphthalimide, polyphthalamide, acrylic resin, benzocyclobutene, or phenolic resin, etc. The embodiments of the present disclosure do not specifically limit the materials of each of the above functional layers.

[0084] For example, the material of the active layer 4121 may include a semiconductor material such as polycrystalline silicon or an oxide semiconductor (e.g., indium gallium zinc oxide). For example, a part of the active layer 4121 may be made conductive by a conductive treatment such as doping so that it has high conductivity.

[0085] For example, the material of the gate 4122 may include metal or alloy materials including, for example, molybdenum, aluminum, and titanium.

[0086] For example, the material of the source 4123 and the drain 4124 may include a metal material or alloy material, such as a metal single layer or multilayer structure formed of, for example, molybdenum, aluminum, and titanium, for example, the multilayer structure being a multilayer metal stack such as a titanium-aluminum-titanium trilayer metal stack (Ti / Al / Ti).

[0087] 1, the display region 10 further includes a third display region 13, which at least partially surrounds (e.g., partially surrounds) the second display region 12, and the first display region 11, the second display region 12, and the third display region 13 do not overlap one another. Note that in some examples, the display substrate 01 may further include a peripheral region that at least partially surrounds the third display region 13.

[0088] 2B and 5, the second display area 12 further includes at least one (e.g., multiple) second light-emitting element 421 and at least one (e.g., multiple) second pixel circuit 422. The second light-emitting element 421 is electrically connected to the second pixel circuit 422, for example, in a one-to-one correspondence, and the second pixel circuit 422 is used to drive the second light-emitting element 421 to emit light. Note that the rectangular frame indicated by the reference numeral 422 in FIG. 5 merely indicates the approximate position of the second pixel circuit 422 and does not represent the specific shape or specific boundaries of the second pixel circuit 422. For example, the multiple second light-emitting elements 421 are arranged in an array, and the multiple second pixel circuits 422 are also arranged in an array. For example, at least one second light-emitting element 421 and the corresponding second pixel circuit 422 constitute one second pixel driving unit 42.

[0089] 5, the second pixel driving unit 42 may include one second pixel circuit 422 and one second light-emitting element 421, or may include multiple second pixel circuits 422 and multiple second light-emitting elements 421. When the second pixel driving unit 42 includes multiple second pixel circuits 422 and multiple second light-emitting elements 421, the number of second pixel circuits 422 in each second pixel driving unit 42 is, for example, equal to the number of second light-emitting elements 421, thereby realizing one-to-one corresponding driving.

[0090] For example, the plurality of second light-emitting elements 421 are arranged in an array, and the plurality of second pixel circuits 422 are also arranged in an array. Here, "arranged in an array" may refer to a plurality of devices being grouped together and the plurality of device groups being arranged in an array, or may refer to a plurality of devices themselves being arranged in an array, and the embodiments of the present disclosure are not limited thereto. For example, in some examples, as shown in FIG. 5 , every four second light-emitting elements 421 are grouped together, and the plurality of sets of second light-emitting elements 421 are arranged in an array, and correspondingly, every four second pixel circuits 422 are grouped together, and the plurality of sets of second pixel circuits 422 are arranged in an array, in which case each second pixel driving unit 42 includes four second pixel circuits 422 and four second light-emitting elements 421.

[0091] FIG. 9 is an enlarged view of a partial region REG3 of the third display region 13 of the display substrate shown in FIG.

[0092] For example, as shown in FIG. 9 , the third display region 13 includes at least one (e.g., multiple) third light-emitting element 431 and at least one (e.g., multiple) third pixel circuit 432. The third light-emitting element 431 is electrically connected to the third pixel circuit 432, for example, in a one-to-one correspondence, and the third pixel circuit 432 is used to drive the third light-emitting element 431 to emit light. Note that the rectangular frame indicated by reference numeral 432 in FIG. 9 merely indicates the approximate position of the third pixel circuit 432 and does not represent the specific shape or specific boundaries of the third pixel circuit 432. For example, the multiple third light-emitting elements 431 are arranged in an array, and the multiple third pixel circuits 432 are also arranged in an array. For example, at least one third light-emitting element 431 and the corresponding third pixel circuit 432 constitute one third pixel driving unit 43.

[0093] 9, the third pixel driving unit 43 may include one third pixel circuit 432 and one third light-emitting element 431, or may include multiple third pixel circuits 432 and multiple third light-emitting elements 431. When the third pixel driving unit 43 includes multiple third pixel circuits 432 and multiple third light-emitting elements 431, the number of the third pixel circuits 432 in each third pixel driving unit 43 is, for example, equal to the number of the third light-emitting elements 431, thereby realizing one-to-one corresponding driving.

[0094] For example, the plurality of third light-emitting elements 431 are arranged in an array, and the plurality of third pixel circuits 432 are also arranged in an array. Here, "arranged in an array" may refer to a plurality of devices being grouped together and the plurality of device groups being arranged in an array, or may refer to a plurality of devices themselves being arranged in an array, and the embodiments of the present disclosure are not limited thereto. For example, in some examples, as shown in FIG. 9 , every fourth third light-emitting element 431 is grouped together, and the plurality of groups of third light-emitting elements 431 are arranged in an array, and correspondingly, every fourth third pixel circuit 432 is grouped together, and the plurality of groups of third pixel circuits 432 are arranged in an array, and in this case, each third pixel driving unit 43 includes four third pixel circuits 432 and four third light-emitting elements 431.

[0095] For example, the distribution density per unit area of ​​the plurality of first light-emitting elements 411 in the first display region 11 is smaller than the distribution density per unit area of ​​the plurality of second light-emitting elements 421 in the second display region 12, and the distribution density per unit area of ​​the plurality of second light-emitting elements 421 in the second display region 12 is smaller than the distribution density per unit area of ​​the plurality of third light-emitting elements 431 in the third display region 13. For example, the first display region 11 and the second display region 12 may be referred to as low-resolution regions of the display substrate 01, and correspondingly, the third display region 13 may be referred to as a high-resolution region of the display substrate 01. For example, the total pixel light-emitting area of ​​the second display region 12 and the first display region 11 may be 1 / 8 to 1 / 2 of the pixel light-emitting area of ​​the third display region 13.

[0096] In some examples, the distribution density per unit area of ​​the plurality of first light-emitting elements 411 in the first display area 11 may be equal to the distribution density per unit area of ​​the plurality of second light-emitting elements 421 in the second display area 12, or may be determined according to actual needs, and the embodiments of the present disclosure are not limited thereto.

[0097] By sequentially increasing the distribution density per unit area of ​​the light-emitting elements in the first display area 11, the second display area 12, and the third display area 13, it is possible to ensure that the three display areas emit light normally to display the screen, and it is also possible for light from the first side of the display substrate 01 to easily pass through the first display area 11 and reach the second side, and it is also easy for a sensor provided on the second side of the display substrate 01 to sense the light.

[0098] For example, the first light-emitting element 411, the second light-emitting element 421, and the third light-emitting element 431 each include an organic light-emitting diode (OLED). Of course, embodiments of the present disclosure are not limited thereto, and the first light-emitting element 411, the second light-emitting element 421, and the third light-emitting element 431 may also be a quantum dot light-emitting diode (QLED) or other suitable light-emitting devices, and embodiments of the present disclosure are not limited thereto.

[0099] For example, the display substrate 01 according to the embodiments of the present disclosure may be an organic light emitting diode (OLED) display substrate or a quantum dot light emitting diode (QLED) display substrate, etc., and the embodiments of the present disclosure are not limited to a specific type of display substrate.

[0100] For example, when the display substrate is an organic light-emitting diode display substrate, the light-emitting layer (e.g., the first light-emitting layer 4112) may include a small molecule organic material or a polymer molecule organic material, and may be a fluorescent or phosphorescent light-emitting material, and may emit red light, green light, blue light, white light, etc. In addition, according to various practical needs, in different examples, the light-emitting layer may further include functional layers such as an electron injection layer, an electron transport layer, a hole injection layer, a hole transport layer, etc.

[0101] For example, when the display substrate is a quantum dot light-emitting diode (QLED) display substrate, the light-emitting layer (e.g., the above-mentioned first light-emitting layer 4112) may include quantum dot materials such as silicon quantum dots, germanium quantum dots, cadmium sulfide quantum dots, cadmium selenide quantum dots, cadmium telluride quantum dots, zinc selenide quantum dots, lead sulfide quantum dots, lead selenide quantum dots, indium phosphide quantum dots, and indium arsenide quantum dots, and the particle size of the quantum dots is, for example, 2 nm to 20 nm.

[0102] At least one embodiment of the present disclosure further provides a display device including a display substrate according to any one of the embodiments of the present disclosure.

[0103] 10 is a schematic block diagram of a display device according to at least one embodiment of the present disclosure. For example, as shown in FIG. 10, the display device 30 includes a display substrate 310, which may be a display substrate according to any embodiment of the present disclosure, such as the display substrate 01 described above.

[0104] The display device 30 may be any electronic device with a display function, such as a smartphone, a laptop, a tablet PC, a television, etc. For example, if the display device 30 is a smartphone or a tablet PC, the smartphone or tablet PC may have a full-screen design, i.e., no peripheral area surrounds the first display area 11, the second display area 12, or the third display area 13. The smartphone or tablet PC may also have a below-screen sensor (e.g., a camera, an infrared sensor, etc.) to perform operations such as image capture, distance detection, and light intensity detection.

[0105] In addition, the display substrate 310 and other components of the display device 30 (e.g., image data encoding / decoding device, clock circuit, etc.) may be made of suitable materials, all of which should be understood by those skilled in the art, and will not be repeated here, nor will they limit the embodiments of the present disclosure.

[0106] 11 is a schematic diagram of a stacked structure of a display device according to at least one embodiment of the present disclosure. For example, as shown in FIG. 11, the display device 30 includes a display substrate 310, which may be a display substrate according to any embodiment of the present disclosure, such as the display substrate 01. For example, the display device 30 further includes a sensor 320.

[0107] For example, let us assume that the display substrate 310 is the display substrate 01. The display substrate 01 has a first side F1 for display and a second side F2 opposite to the first side F1. That is, the first side F1 is the display side, and the second side F2 is the non-display side. The display substrate 01 is configured to perform a display operation on the first side F1. That is, the first side F1 of the display substrate 01 is the light-emitting side of the display substrate 01 and faces the user. The first side F1 and the second side F2 are arranged opposite to each other in the normal direction of the display surface of the display substrate 01.

[0108] As shown in FIG. 11 , the sensor 320 is provided on the second side F2 of the display substrate 01 and configured to receive light from the first side F1. For example, the sensor 320 and the first display region 11 are stacked in a normal direction to the display surface of the display substrate 01 (e.g., a direction perpendicular to the display substrate 01), and the sensor 320 can receive and process optical signals penetrating the first display region 11, which may be visible light, infrared light, etc. For example, the first display region 11 allows light from the first side F1 to at least partially transmit to the second side F2. For example, the first display region 11 does not have pixel circuits, and in this case, the light transmittance of the first display region 11 can be improved.

[0109] For example, the orthogonal projection of the sensor 320 on the display substrate 01 at least partially overlaps with the first display region 11. For example, in some examples, when a direct-underneath installation form is used, the orthogonal projection of the sensor 320 on the display substrate 01 is within the first display region 11. For example, in some other examples, when light is made incident on the sensor 320 from the side using another light guide element (e.g., a light guide plate, a light guide tube, etc.), the orthogonal projection of the sensor 320 on the display substrate 01 partially overlaps with the first display region 11. In this case, since light can propagate laterally to the sensor 320, the sensor 320 does not need to be completely located at a position corresponding to the first display region 11.

[0110] For example, by providing the first pixel circuit 412 in the second display region 12 and stacking the sensor 320 and the first display region 11 in the normal direction of the display surface of the display substrate 01, it is possible to reduce the blocking of optical signals incident on the first display region 11 and irradiated to the sensor 320 by the elements of the first display region 11, thereby improving the signal-to-noise ratio of the image output by the sensor 320. For example, the first display region 11 can be referred to as a high light transmission region of the low-resolution region of the display substrate 01.

[0111] For example, the sensor 320 may be an image sensor capable of collecting an image of the external environment facing the light-collecting surface of the sensor 320, such as a CMOS image sensor or a CCD image sensor. The sensor 320 may also be an infrared sensor, a distance sensor, or the like. For example, if the display device 30 is a mobile terminal such as a mobile phone or a laptop, the sensor 320 may be implemented as a camera of the mobile terminal, such as a mobile phone or a laptop, and may include an optical device such as a lens, a reflector, or an optical waveguide to modulate the light path as necessary. For example, the sensor 320 may include photosensitive pixels arranged in an array. For example, each photosensitive pixel may include a photosensitive detector (e.g., a photodiode or a phototransistor) and a switching transistor (e.g., a switching thin-film transistor). For example, the photodiode can convert an irradiated optical signal into an electrical signal, and the switching transistor is electrically connected to the photodiode to control whether the photodiode is in a state to collect the optical signal and the collection time of the optical signal.

[0112] In some examples, the anode of the first light-emitting element 411 has an ITO / Ag / ITO laminated structure. In this case, only the anode of the first light-emitting element 411 is opaque in the first display region 11. That is, wiring for driving the first light-emitting element 411 (e.g., the signal transmission line 110) and wiring insulated from the first light-emitting element 411 (e.g., the first dummy wiring 121 or the second dummy wiring 122) are provided as transparent wiring. In this case, not only is the light transmittance of the first display region 11 further improved, but the uniformity and consistency of light passing through the first display region 11 can be improved, and problems such as reflection that may occur when the sensor 320 receives light can be reduced or avoided. This helps the sensor 320 to accurately perform operations such as image capture, distance detection, and light intensity detection, and contributes to improving the performance of the display device 30 (e.g., a full-screen display device).

[0113] In the embodiments of the present disclosure, the display device 30 may further include more components and structures, and the embodiments of the present disclosure are not limited thereto. For technical effects and detailed descriptions of the display device 30, please refer to the description of the display substrate 01 above, and the description will not be repeated here.

[0114] For example, the display device 30 may be any product or component with a display function, such as a display substrate, a display panel, electronic paper, a mobile phone, a tablet PC, a television, a display, a laptop computer, a digital photo frame, or a navigator, and the embodiments of the present disclosure are not limited thereto.

[0115] For the specific description and technical effects of the display device 30 according to the embodiments of the present disclosure, please refer to the corresponding content of the display substrate according to the embodiments of the present disclosure, for example, the corresponding content of the display substrate 01 according to the above embodiment, and will not be repeated here.

[0116] Further, the following points need to be explained:

[0117] (1) The drawings of the embodiments of the present disclosure relate only to the structures of the embodiments of the present disclosure, and other structures may refer to conventional designs.

[0118] (2) For clarity, in the drawings illustrating the embodiments of the present disclosure, the thicknesses of layers or regions are exaggerated or reduced, i.e., the drawings are not drawn to actual scale. As can be understood, when an element such as a layer, film, region, or first substrate is described as being located "on" or "under" another element, the element may be located "directly" "on" or "under" the other element, or intermediate elements may be present.

[0119] (3) Unless there is a contradiction, the embodiments and features of the embodiments of the present disclosure may be combined with each other to obtain new embodiments.

[0120] The above are merely 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 in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be in accordance with the scope of protection of the claims.

Claims

1. a display substrate having a first side for display and a second side opposite the first side, the display substrate including a display area; the display area comprises a first display area and a second display area, the second display area at least partially surrounding the first display area, and the first display area and the second display area do not overlap each other; the first display area includes at least one first light-emitting element, allowing light from the first side to be at least partially transmitted to the second side; the second display area includes at least one first pixel circuit, and the first light-emitting element is electrically connected to the first pixel circuit; the display substrate is provided with at least one signal transmission line and at least one first dummy wiring; the signal transmission line is at least partially located in the first display area and the second display area, and the first light-emitting element is connected to the first pixel circuit via the signal transmission line; the first dummy wiring is at least partially located within the first display area and is insulated from the signal transmission line and the first light-emitting element; the signal transmission line and the first dummy wiring each extend along a first direction, an orthogonal projection of the first dummy wiring in a plane parallel to the display substrate is at least partially offset from an orthogonal projection of the signal transmission line in a plane parallel to the display substrate, and at least a portion of the first dummy wiring extends along a curved shape; the at least one first dummy wiring includes a plurality of first dummy wirings arranged along a second direction different from the first direction and configured to receive a first voltage signal; The display substrate further includes at least one second dummy wiring extending along the second direction and electrically connected to the plurality of first dummy wirings so as to electrically connect the plurality of first dummy wirings to each other and receive the first voltage signal.

2. The display substrate of claim 1 , wherein the first dummy wiring and the signal transmission line are located in the same layer.

3. 3. The display substrate according to claim 1, wherein both the first dummy wiring and the signal transmission line extend along straight lines and are parallel to each other.

4. The display substrate of claim 1 , wherein at least one of the plurality of first dummy wirings is electrically connected to a first power supply line that provides the first voltage signal through a via structure.

5. The second dummy wiring and the first dummy wiring are located in the same layer, or 5. The display substrate according to claim 1, wherein the second dummy wiring and the first dummy wiring are located in different film layers, and the different film layers are insulated from each other at positions where no vias are provided.

6. the at least one signal transmission line includes a plurality of signal transmission lines arranged along the second direction; the plurality of signal transmission lines and the plurality of first dummy wirings form a wiring array, one signal transmission line functions as one line unit of the wiring array, and one first dummy wiring functions as one line unit of the wiring array; The display substrate according to claim 1 , wherein the distance between at least one line unit of the wiring array and an adjacent line unit in the second direction is equal.

7. the first display area includes a middle area and peripheral areas located on both sides of the middle area in the first direction; a central axis of the first display area is located within the intermediate area, and the peripheral area is adjacent to the second display area; The display substrate according to claim 6 , wherein a distribution ratio per unit area of ​​the plurality of first dummy wirings in the intermediate region is greater than a distribution ratio per unit area of ​​the plurality of first dummy wirings in the peripheral region.

8. 8. The display substrate according to claim 1, wherein the signal transmission lines, the first dummy wirings, and the second dummy wirings each comprise a transparent conductive wiring.

9. 9. The display substrate according to claim 1, wherein the width of the first dummy wiring in a second direction different from the first direction is the same as the width of the signal transmission line in the second direction.

10. the signal transmission line is electrically connected to the anode of the first light-emitting element through a via structure that penetrates at least an insulating layer located between the signal transmission line and the anode of the first light-emitting element; The display substrate according to any one of claims 1 to 9.

11. The display substrate of claim 10 , wherein an orthogonal projection of the via structure in a plane parallel to the display substrate does not overlap an orthogonal projection of the at least one first dummy wiring in a plane parallel to the display substrate.

12. the first pixel circuit includes a thin film transistor, the thin film transistor including a gate, a first electrode, and a second electrode; the signal transmission line is electrically connected to a first electrode or a second electrode of the thin film transistor; The display substrate according to any one of claims 1 to 11.

13. Further comprising a source / drain metal layer; a first electrode and a second electrode of the thin film transistor are located on the source-drain metal layer, and an anode of the first light-emitting element is located on the source-drain metal layer; The display substrate of claim 12 , wherein a film layer in which the signal transmission line and the first dummy wiring are located is located between the anode of the first light emitting element and the source / drain metal layer.

14. the display area further includes a third display area, the third display area at least partially surrounds the second display area, and the first display area, the second display area, and the third display area do not overlap with each other; the second display area further includes at least one second light-emitting element and at least one second pixel circuit, the second light-emitting element being electrically connected to the second pixel circuit; The display substrate according to any one of claims 1 to 13, wherein the third display region comprises at least one third light-emitting element and at least one third pixel circuit, and the third light-emitting element is electrically connected to the third pixel circuit.

15. The display substrate of claim 14 , wherein the first light emitting element, the second light emitting element, and the third light emitting element each comprise an organic light emitting diode.

16. the at least one first light-emitting element comprises a plurality of first light-emitting elements, the at least one second light-emitting element comprises a plurality of second light-emitting elements, and the at least one third light-emitting element comprises a plurality of third light-emitting elements; a distribution density per unit area of ​​the plurality of first light-emitting elements in the first display region is equal to or less than a distribution density per unit area of ​​the plurality of second light-emitting elements in the second display region; 16. The display substrate according to claim 14, wherein a distribution density per unit area of ​​the plurality of second light-emitting elements in the second display region is smaller than a distribution density per unit area of ​​the plurality of third light-emitting elements in the third display region.

17. A display substrate according to any one of claims 1 to 16, wherein the ratio of the area of ​​the first display region covered by the orthogonal projection of the at least one signal transmission line in a plane parallel to the display substrate and the orthogonal projection of the at least one first dummy wiring in a plane parallel to the display substrate to the area of ​​the first display region is 70% to 95%.

18. A display device comprising the display substrate according to any one of claims 1 to 17.

19. Further comprising a sensor; 20. The display device of claim 18, wherein the sensor is located on a second side of the display substrate and configured to receive light from a first side of the display substrate.

20. 20. The display device of claim 19, wherein an orthographic projection of the sensor on the display substrate at least partially overlaps the first display area.

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