Display substrate and display device

Abstract

A display substrate and a display device. The display substrate has a first side for display and a second side opposite to the first side, and includes a display area. The display area includes a first display area and a second display area. The first display area includes a first light-emitting element, and the first display area allows light from the first side to be at least partially transmitted to the second side. The second display area includes a first pixel circuit, and the first light-emitting element is electrically connected to the first pixel circuit. A signal transmission line and a first dummy trace are provided on the display substrate. The first light-emitting element is connected to the first pixel circuit through the signal transmission line. The first dummy trace 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 orthographic projection of the first dummy trace in the plane parallel to the display substrate is at least partially staggered from the orthographic projection of the signal transmission line in the plane parallel to the display substrate. The display substrate can improve the uniformity of the light transmitted from the first side to the second side.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to a display substrate and a display device. Background Art

[0002] Organic Light-Emitting Diode (OLED) display devices have the characteristics of wide viewing angle, high contrast, fast response speed, wide color gamut, high screen-to-body ratio, self-luminescence, and thinness. Due to the above characteristics and advantages, organic light-emitting diode (OLED) display devices have gradually attracted widespread attention and can be applied to mobile phones, monitors, laptops, smart watches, digital cameras, instruments, flexible wearable devices and other devices with display functions. With the further development of display technology, display devices with high screen-to-body ratio can no longer meet people's needs, and display devices with full screens have become the development trend of future display technology. Summary of the invention

[0003] 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 including a display area; the display area includes a first display area and a second display area, the second display area at least partially surrounds 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, and the first display area allows 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; at least one signal transmission line and at least one first dummy wiring are provided on the display substrate, 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 through 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 extend respectively along a first direction, and the orthographic projection of the first dummy wiring in a plane parallel to the display substrate is at least partially staggered with the orthographic projection of the signal transmission line in a plane parallel to the display substrate.

[0004] For example, in a display substrate provided in an embodiment of the present disclosure, the first dummy wiring and the signal transmission line are located in the same layer.

[0005] For example, in a display substrate provided in an embodiment of the present disclosure, the first dummy wiring and the signal transmission line both extend along a straight line and are parallel to each other.

[0006] For example, in the display substrate provided in an embodiment of the present disclosure, the at least one first dummy trace includes a plurality of first dummy traces, the plurality of first dummy traces are 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 trace, and the second dummy trace extends along the second direction and is electrically connected to the plurality of first dummy traces so that the plurality of first dummy traces are electrically connected to each other to receive the first voltage signal.

[0007] For example, in the display substrate provided in an embodiment of the present disclosure, at least one of the plurality of first dummy traces is electrically connected to a first power line providing the first voltage signal through a via structure.

[0008] For example, in the display substrate provided in an embodiment of the present disclosure, the second dummy trace and the first dummy trace are located on the same layer, or the second dummy trace and the first dummy trace are located in different film layers, and the different film layers are insulated from each other at positions where no vias are provided.

[0009] For example, in the display substrate provided in an embodiment of the present disclosure, 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 traces form a wiring array, one signal transmission line serves as a line unit in the wiring array, one first dummy trace serves as a line unit in the wiring array, and the distance between at least one line unit in the wiring array and an adjacent line unit in the second direction is equal.

[0010] For example, in the display substrate provided in an embodiment of the present disclosure, the first display area includes a middle area and peripheral areas on both sides of the middle area in the first direction, the central axis of the first display area is located within the middle area, the peripheral area is adjacent to the second display area, and the unit area distribution ratio of the plurality of first dummy traces within the middle area is greater than the unit area distribution ratio of the plurality of first dummy traces within the peripheral area.

[0011] For example, in the display substrate provided in an embodiment of the present disclosure, the signal transmission line, the first dummy trace, and the second dummy trace respectively include transparent conductive traces.

[0012] For example, in the display substrate provided in an embodiment of the present disclosure, the width of the first dummy trace in a second direction different from the first direction is the same as the width of the signal transmission line in the second direction.

[0013] For example, in the display substrate provided in an 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 at least penetrates the insulating layer located between the signal transmission line and the anode of the first light-emitting element.

[0014] For example, in the display substrate provided in an embodiment of the present disclosure, the positive projection of the via structure in the plane parallel to the display substrate does not overlap with the positive projection of the at least one first dummy trace in the plane parallel to the display substrate.

[0015] For example, in the display substrate provided in an 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.

[0016] For example, the display substrate provided in an embodiment of the present disclosure further includes a source-drain metal layer. The first pole and the second pole of the thin-film transistor are located in the source-drain metal layer. The anode of the first light-emitting element is located above the source-drain metal layer. The film layer where the signal transmission line and the first dummy trace are located is between the anode of the first light-emitting element and the source-drain metal layer.

[0017] For example, in the display substrate provided in an embodiment of the present disclosure, the display area further includes a third display area. The third display area at least partially surrounds the second display area. 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 is electrically connected to the second pixel circuit. The third display area includes at least one third light-emitting element and at least one third pixel circuit. The third light-emitting element is electrically connected to the third pixel circuit.

[0018] For example, in the display substrate provided in 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.

[0019] For example, in the display substrate provided in an embodiment of the present disclosure, the at least one first light-emitting element includes a plurality of first light-emitting elements, the at least one second light-emitting element includes a plurality of second light-emitting elements, the at least one third light-emitting element includes a plurality of third light-emitting elements. The unit area distribution density of the plurality of first light-emitting elements in the first display area is less than or equal to the unit area distribution density of the plurality of second light-emitting elements in the second display area. The unit area distribution density of the plurality of second light-emitting elements in the second display area is less than the unit area distribution density of the plurality of third light-emitting elements in the third display area.

[0020] For example, in the display substrate provided in an embodiment of the present disclosure, the ratio of the area of the region covered by the positive projection of the at least one signal transmission line and the positive projection of the at least one first dummy trace in the plane parallel to the display substrate in the first display region to the area of the first display region is 70% to 95%.

[0021] At least one embodiment of the present disclosure further provides a display device, which includes the display substrate described in any embodiment of the present disclosure.

[0022] For example, the display device provided in an embodiment of the present disclosure further includes a sensor, the sensor is located on the second side of the display substrate, and is configured to receive light from the first side of the display substrate.

[0023] For example, in the display device provided in an embodiment of the present disclosure, the positive projection of the sensor on the display substrate at least partially overlaps with the first display region. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present disclosure, and do not limit the present disclosure.

[0025] Figure 1 A schematic plan view of a display substrate provided for at least one embodiment of the present disclosure;

[0026] Figure 2A For Figure 1 A schematic plan view of the first display region and the second display region of the display substrate shown;

[0027] Figure 2B For Figure 2A A schematic layout diagram of the light-emitting elements and pixel circuits in the first display region and the second display region shown;

[0028] Figure 3 For Figure 2A A schematic diagram of an example of the first display region and the second display region of the display substrate shown;

[0029] Figure 4 For Figure 3 An enlarged view of a partial region REG1 of

[0030] Figure 5 For Figure 3 An enlarged view of a partial region REG2 of

[0031] Figure 6Schematic diagram of an example of a part of the edge of a display substrate close to the display area provided by at least one embodiment of the present disclosure;

[0032] Figure 7 Schematic diagram of a light-transmitting area of a display substrate;

[0033] Figure 8 Schematic diagram of a stacked structure of a display substrate provided by at least one embodiment of the present disclosure;

[0034] Figure 9 For Figure 1 Enlarged view of a partial area REG3 of the third display area of the display substrate shown;

[0035] Figure 10 Schematic block diagram of a display device provided by at least one embodiment of the present disclosure; and

[0036] Figure 11 Schematic diagram of a stacked structure of a display device provided by at least one embodiment of the present disclosure. Detailed implementation manners

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Apparently, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the protection scope of the present disclosure.

[0038] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the ordinary meanings understood by those of ordinary skill in the art to which the present disclosure pertains. The "first", "second", and similar terms used in the present disclosure do not denote any order, quantity, or importance, but are only used to distinguish different components. Similarly, the terms such as "a", "an", or "the" do not denote a quantity limitation, but mean that there is at least one. The terms such as "include" or "comprise" mean that the elements or items appearing before this term cover the elements or items listed after this term and their equivalents, without excluding other elements or items. The terms such as "connect" or "couple" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left", "right", etc. are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0039] For a current display substrate having an under-display sensor (e.g., a camera), in order to improve the light transmittance of the display area of the display substrate corresponding to the under-display sensor, the unit area distribution density (PPI) of the light-emitting elements in the display area corresponding to the under-display sensor can be less than that of the light-emitting elements in other display areas of the display substrate.

[0040] However, since the unit area distribution densities of the light-emitting elements in different areas of the display substrate are different, the setting manners of the light-emitting elements and the corresponding pixel circuits in different areas are different. For example, the light-emitting elements in the display area corresponding to the under-display sensor need to be electrically connected to the corresponding pixel circuits located in other display areas, resulting in difficulty in achieving uniform arrangement of the traces in the display area corresponding to the under-display sensor. This affects the light transmittance of the display area corresponding to the under-display sensor. For example, it reduces the uniformity of the light passing through this area, and further causes problems such as reflection when the under-display sensor receives light, making it difficult to accurately perform operations such as image capture, distance sensing, and light intensity sensing, which has an adverse impact on the performance of the display device using this display substrate.

[0041] At least one embodiment of the present disclosure provides a display substrate, which has a first side for display and a second side opposite to the first side, and includes a display area; the display area includes a first display area and a second display area, the second display area at least partially surrounds 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, and the first display area allows light from the first side to at least partially transmit 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; at least one signal transmission line and at least one first dummy trace are provided on the display substrate, 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 through the signal transmission line, the first dummy trace 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 trace extend along a first direction respectively, and the positive projection of the first dummy trace in the plane parallel to the display substrate is at least partially offset from the positive projection of the signal transmission line in the plane parallel to the display substrate.

[0042] The display substrate provided by at least one of the above embodiments of the present disclosure can optimize 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 the light passing through the first display area. For example, the first display area can be the display area corresponding to an under-screen sensor (such as a camera). Thus, the display substrate provided by the above embodiments of the present disclosure can weaken or avoid problems such as reflection that may occur when the under-screen sensor receives light, thereby helping the under-screen sensor accurately perform operations such as image capture, distance sensing, and light intensity sensing, and further helping to improve the performance of a display device (such as a full-screen display device) using the display substrate.

[0043] Next, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. It should be noted that the same reference numerals in different drawings will be used to refer to the same elements that have been described.

[0044] Figure 1 A plan view of a display substrate provided by at least one embodiment of the present disclosure. As Figure 1 shown, the display substrate 01 includes a display area 10, and the display area 10 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 with each other, and the second display area 12 at least partially surrounds (for example, completely surrounds) the first display area 11.

[0045] For example, the display substrate 01 has a first side for display and a second side opposite to the first side. For example, in some examples, as Figure 1 shown, the first side is the front side of the display substrate 01 (that is, the Figure 1 plane shown), and the second side is the back side of the display substrate. For example, a sensor can be provided at a position on the second side of the display substrate 01 corresponding to the first display area 11. The sensor is, for example, an image sensor or an infrared sensor, etc. The sensor is configured to receive light from the first side of the display substrate 01, so as to perform operations such as image capture, distance sensing, and light intensity sensing.

[0046] Figure 2A For Figure 1 a plan view of the first display area and the second display area of the display substrate shown, Figure 2B For Figure 2A an arrangement schematic diagram of the light-emitting elements and pixel circuits in the first display area and the second display area shown. It should be noted that, for the sake of clearly and concisely explaining the arrangement manner of the light-emitting elements and pixel circuits in the first display area and the second display area, Figure 2B the rectangular frames indicated by the reference numerals are only used to show the approximate 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; and, Figure 2BThe rectangular frames are only used to illustrate the arrangement of the light-emitting elements and the pixel circuits, and do not represent the actual number of the light-emitting elements and the pixel circuits in the first display area and the second display area. For the specific structures of the light-emitting elements and the pixel circuits, etc., reference can be made to the conventional designs in the art, and the embodiments of the present disclosure do not limit this.

[0047] For example, as Figure 1 , Figure 2A and Figure 2B shown, the second display area 12 at least partially surrounds (for example, completely surrounds) the first display area 11.

[0048] For example, the shape of the first display area 11 can be circular or oval, and the shape of the second display area 12 can be rectangular, but the embodiments of the present disclosure are not limited thereto. For another example, the shapes of the first display area 11 and the second display area 12 can both be rectangular or other applicable shapes.

[0049] Figure 3 is Figure 2A a schematic diagram of an example of the first display area and the second display area of the display substrate shown, Figure 4 is Figure 3 an enlarged view of a partial area REG1 of Figure 5 is Figure 3 an enlarged view of a partial area REG2 of Figure 5 It should be noted that, for the sake of clearly and concisely illustrating the connection relationship between the first light-emitting element and the first pixel circuit,

[0050] only structures such as light-emitting elements, pixel circuits, signal transmission lines, etc. are shown in Figure 2A - Figure 5 , but this does not constitute a limitation on the embodiments of the present disclosure.

[0051] For example, multiple first light-emitting elements 411 can be disposed in multiple light-emitting units, and these light-emitting units are arranged in an array. For example, each light-emitting unit may include one or more first light-emitting elements 411. For example, the multiple first light-emitting elements 411 can emit light of the same color or different colors, such as white light, red light, blue light, green light, etc., which can be determined according to actual requirements, and the embodiments of the present disclosure do not limit this. For example, the arrangement manner of the multiple first light-emitting elements 411 can refer to the conventional pixel unit arrangement manners, such as GGRB, RGBG, RGB, etc., and the embodiments of the present disclosure do not limit this.

[0052] For example, the first display area 11 allows light from the first side of the display substrate 01 to be at least partially transmitted to the second side of the display substrate 01. In this way, it is convenient to dispose a sensor at a position on the second side of the display substrate 01 and corresponding to the first display area 11. The sensor can receive light from the first side, so that operations such as image shooting, distance sensing, and light intensity sensing can be performed.

[0053] For example, as Figure 2A - Figure 5 shown, the second display area 12 includes at least one (e.g., multiple) 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 multiple first pixel circuits 412 are used to drive the multiple 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 multiple first pixel circuits 412 can be disposed in multiple first pixel driving units, Figure 5 The rectangular frames (the black border and white-filled areas indicated by the label 412) shown represent the first pixel driving units, and these first pixel driving units are arranged in an array.

[0054] It should be noted that in Figure 3 、 Figure 4 and Figure 5 , the first pixel driving unit may include one or more first pixel circuits 412. When the 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 the 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. For example, the number of first light-emitting elements 411 in each light-emitting unit is equal to the number of first pixel circuits 412 in each first pixel driving unit, thereby realizing one-to-one driving.

[0055] For example, multiple first light emitting elements 411 are arranged in an array, and multiple first pixel circuits 412 are also arranged in an array. Here, "array arrangement" can refer to multiple devices being arranged in an array as a group and multiple groups of devices being arranged in an array, or it can refer to multiple devices being arranged in an array themselves, and the embodiments of the present disclosure are not limited to this. For example, in some examples, such as Figure 3 , Figure 4 and Figure 5 As shown, every four first light-emitting elements 411 form a group, and multiple groups of first light-emitting elements 411 are arranged in an array. Correspondingly, every four first pixel circuits 412 form a group, and multiple groups of first pixel circuits 412 are arranged in an array. At this time, each first pixel driving unit includes four first pixel circuits 412.

[0056] For example, Figure 3 , Figure 4 and Figure 5 As shown, at least one (e.g., multiple) signal transmission lines 110 and at least one (e.g., multiple) first dummy wiring 121 are provided on the display substrate 01. 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 through the signal transmission line 110. For example, the first end of the signal transmission line 110 is located in the first display area 11 and is electrically connected to the first light-emitting element 411, and the second end of the signal transmission line 110 is located in the second display area 12 and is electrically connected to the first pixel circuit 412, thereby realizing the 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 in the first display area 11, for example, it can be located only in the first display area 11, or it can extend to 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.

[0057] For example, the signal transmission line 110 and the first dummy wiring 121 extend along the first direction R1 respectively, and the orthographic projection of the first dummy wiring 121 in a plane parallel to the display substrate 01 is at least partially staggered with the orthographic projection of the signal transmission line 110 in a plane parallel to the display substrate 01. For example, there is no overlapping portion between the orthographic projection of the first dummy wiring 121 in a plane parallel to the display substrate 01 and the orthographic projection of the signal transmission line 110 in a plane parallel to the display substrate 01, thereby enabling the first dummy wiring 121 and the signal transmission line 110 to cover different areas of the first display area 11 respectively, thereby 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, improving the uniformity and consistency of the light passing through the first display area 11, and also improving the etching uniformity of the display substrate 01 in the first display area 11.

[0058] For example, Figure 7Taking the light-transmitting region LR of a display substrate shown as an example, since the distribution of the traces in the light-transmitting region LR is relatively uneven, the uniformity and consistency of the light passing through the light-transmitting region LR are reduced, which in turn seriously affects the light-transmitting effect of the light-transmitting region LR. For example, problems such as reflection are likely to occur when the under-screen sensor corresponding to the light-transmitting region LR receives light, making it difficult to accurately perform operations such as image shooting, distance sensing, and light intensity sensing.

[0059] Compared with Figure 7 the light-transmitting region LR of the display substrate shown, the display substrate 01 provided in the above embodiments of the present disclosure can optimize the trace design in the first display region 11 by providing a first dummy trace 121 that does not overlap with the signal transmission line 110 in a plane parallel to the display substrate 01. For example, the uniformity and consistency of the trace layout in the first display region 11 can be improved, thereby enhancing the uniformity and consistency of the 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 (such as a camera) is correspondingly arranged in the first display region 11, the display substrate 01 provided in the above embodiments 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 shooting, distance sensing, and light intensity sensing, and further helping to improve the performance of a display device (such as a full-screen display device) using the display substrate 01.

[0060] In some embodiments of the present disclosure, the ratio of the area of the region covered by the positive projection of the signal transmission line 110 in a plane parallel to the display substrate 01 and the positive projection of the first dummy trace 121 in a plane parallel to the display substrate 01 in the first display region 11 to the area of the first display region 11 is 70% - 95%, further for example 80% - 90%, and for example, it can also be 75% or 85%. That is, the signal transmission line 110 and the first dummy trace 121 as a whole can cover 70% - 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 trace layout in the first display region 11, and thus enhancing the uniformity and consistency of the light passing through the first display region 11 and improving the light-transmitting effect of the first display region 11.

[0061] In some embodiments of the present disclosure, as Figure 3 、 Figure 4 and Figure 5 shown, the first dummy trace 121 and the signal transmission line 110 can 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.

[0062] In some other embodiments of the present disclosure, according to actual requirements, such as different requirements based on increasing the signal transmission load on the signal transmission line or further simplifying the manufacturing process, etc., the first dummy trace and the signal transmission line may also be located in different layers; or, a part of the first dummy trace may be disposed in the same layer as the signal transmission line, and another part of the first dummy trace may be disposed in a layer different from the signal transmission line. The embodiments of the present disclosure do not limit this.

[0063] It should be noted that in the description of the present disclosure, being located in the "same layer" means being located in the same film layer. For example, the traces located in the same film layer can be fabricated in the same process, such as forming the required traces through a single patterning process. For example, when the display substrate 01 includes a substrate, in the direction perpendicular to the substrate, the traces located in the same film layer are at the same or substantially the same distance from the substrate. That is, the traces in this film layer are at the same or substantially the same distance from the substrate. In the subsequent description, the meaning of being located in the "same layer" can be referred to the above description and will not be elaborated further.

[0064] It should be noted that in the description of the present disclosure, being located in "different layers" means being located in different film layers, and these different film layers are insulated from each other at positions where no vias are provided. For example, when it is necessary to electrically connect the traces located in different film layers, the traces located in different film layers can be electrically connected by providing vias. For example, these different film layers are fabricated in different processes. For example, first, one film layer among these different film layers is fabricated using a first process, and then another film layer among these different film layers is fabricated using a second process. For example, after implementing the first process and before implementing the second process, an insulating layer can also be fabricated using a third process, and this insulating layer is located between different film layers to insulate different film layers from each other at positions where no vias are provided. For example, the first process, the second process, and the third process can be the same or different. For example, when the display substrate 01 includes a substrate, in the direction perpendicular to the substrate, the different film layers are at different distances from the substrate. That is, in different film layers, one film layer is closer to the substrate, while another film layer is farther from the substrate. In the subsequent description, the meaning of being located in "different layers" can be referred to the above description and will not be elaborated further.

[0065] In some embodiments of the present disclosure, as Figure 3 , Figure 4 and Figure 5 shown, the first dummy trace 121 and the signal transmission line 110 both extend along a straight line and are parallel to each other, which further facilitates the uniformity and consistency of the layout of the first dummy trace 121 and the signal transmission line 110 in the first display area 11, and can also further simplify the process requirements of the display substrate 01, thereby facilitating the fabrication of the display substrate 01.

[0066] It should be noted that in some other embodiments of the present disclosure, according to actual requirements, for example, based on the layout design of the light-emitting elements or other structures and devices in the first display area 11, the first dummy trace 121 or the signal transmission line 110 may also extend along a curved line, a broken line or other suitable shapes, or the extension lines of the first dummy trace 121 and the signal transmission line 110 may intersect with each other. The embodiments of the present disclosure do not limit this.

[0067] In some embodiments of the present disclosure, the first dummy trace 121 may be configured to receive a first voltage signal (such as a high-level signal or a low-level signal, and the low-level signal is, for example, a ground signal), or may also be configured to be in a floating state. The embodiments of the present disclosure do not limit this. For example, taking the first dummy trace 121 receiving a high-level signal or a low-level signal as an example, the first dummy trace 121 can also reduce or avoid signal crosstalk between the signal transmission lines 110, thereby improving the uniformity and stability of the circuit environment and improving the signal transmission effect of the signal transmission lines 110.

[0068] For example, as Figure 3 、 Figure 4 and Figure 5 shown, multiple first dummy traces 121 in the first display area 11 are arranged along a second direction R2 different from the first direction R1 and are configured to receive a first voltage signal. The display substrate further includes at least one (such as multiple) second dummy trace 122, and the second dummy trace 122 extends along the second direction R2 and is electrically connected to the multiple first dummy traces 121, so that the multiple first dummy traces 121 are electrically connected to each other to receive the first voltage signal. Thereby, the electrical connection effect between the multiple first dummy traces 121 can be improved, and the uniformity and stability of the circuit environment can be further improved.

[0069] It should be noted that the included angle between the first direction R1 and the second direction R2 can be, for example, between 70° and 90°, and includes 70° and 90°. For example, the included angle between the first direction R1 and the second direction R2 is 70°, 75°, 85°, 90° or 80°, etc. The specific value of this included angle can be set according to actual situations. The embodiments of the present disclosure do not limit this.

[0070] For example, at least one of the multiple first dummy traces 121 can be electrically connected to the first power supply line that provides the first voltage signal through a via structure. For example, the first power supply line can be a power supply line for providing the first voltage signal for display to the first pixel circuit 412. Thereby, the trace layout of the display substrate 01 can be simplified, and the structural design of the display substrate 01 can be optimized.

[0071] Figure 6Schematic diagram of an example of a portion near the edge of the display area of a display substrate provided by at least one embodiment of the present disclosure. For example Figure 6 The portion shown can be located in Figure 3 The partial area REG4 shown in. For example, one first dummy trace 121A among the plurality of first dummy traces 121 that is close to 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 the received first voltage signal is transmitted to other first dummy traces 121 and / or second dummy traces 122 through the second dummy trace 122A connected to the first dummy trace 121A.

[0072] It should be noted that Figure 6 The shape, position, overlapping area with the first dummy trace 121A, etc. of the first power line LVDD in are only illustrative, and the embodiments of the present disclosure do not limit the specific shape, setting position, etc. of the first power line LVDD. In some embodiments of the present disclosure, the first power line LVDD can be electrically connected to only one first dummy trace 121A as shown in Figure 6 ; in other some embodiments of the present disclosure, the first power line LVDD can also be electrically connected to multiple first dummy traces 121A such as 2, 3, or 4, etc., and the embodiments of the present disclosure do not limit this. In some embodiments of the present disclosure, the via structure H3 for realizing the electrical connection between the first power line LVDD and the first dummy trace 121A can include only one via as shown in Figure 6 ; in other some embodiments of the present disclosure, the via structure H3 for realizing the electrical connection between the first power line LVDD and the first dummy trace 121A can also include multiple vias such as 2, 3, or 4, etc., and the embodiments of the present disclosure do not limit this.

[0073] In some embodiments of the present disclosure, the second dummy trace 122 can be on the same layer as the first dummy trace 121 as shown in Figure 4 to simplify the manufacturing process and reduce the manufacturing cost; or, in other some embodiments of the present disclosure, the second dummy trace 122 can also be on a different layer from the first dummy trace 121. For example, the second dummy trace 122 and the first dummy trace 121 are on different film layers, and the different film layers are insulated from each other at positions where no vias are provided, thereby weakening or avoiding signal crosstalk between the traces. The embodiments of the present disclosure do not limit this.

[0074] For example, as shown in Figure 3 , Figure 4 and Figure 5As shown, multiple first dummy traces 121 are arranged along the second direction R2, and multiple signal transmission lines 110 are arranged along the second direction R2. The multiple signal transmission lines 110 and the multiple first dummy traces 121 form a wiring array. One signal transmission line 110 serves as a line unit 140 in the wiring array, and one first dummy trace 121 serves as a line unit 140 in the wiring array. The distance between at least one line unit 140 and an adjacent line unit 140 in the second direction R2 in the wiring array is equal. That is, the distance between at least one first dummy trace 121 or signal transmission line 110 among the multiple first dummy traces 121 and the multiple signal transmission lines 110 and two adjacent traces (these two traces can be first dummy traces 121 and / or signal transmission lines 110) in the second direction R2 (e.g., located on both sides of it in the second direction R2) is equal. Thus, the wiring design in the first display area 11 can be further optimized, the uniformity and consistency of the wiring layout in the first display area 11 can be further improved, and thus the uniformity and consistency of the light passing through the first display area 11 can be further improved, and the light transmittance of the first display area 11 can be improved.

[0075] For example, as Figure 3 、 Figure 4 and Figure 5 shown, in the first display area 11, the distance between each signal transmission line 110 and two adjacent traces (these two traces can be first dummy traces 121 and / or signal transmission lines 110) in the second direction R2 is equal. Thus, both the uniformity and consistency of the wiring layout in the first display area 11 can be improved, and the uniformity and stability of the circuit environment can also be improved, thereby improving the signal transmission effect of the signal transmission line 110.

[0076] For example, in combination with Figure 2A - Figure 5As shown, the first display area 11 includes a middle area 1101 and peripheral areas 1102 on both sides of the middle area 1101 in the first direction R1 (for example, completely surrounding the middle area 1101 in the first direction R1). The central axis L11 of the first display area 11 is located within the middle area 1101. The peripheral areas 1102 are adjacent to the second display area 12. The distribution ratio of the plurality of first dummy traces 121 per unit area in the middle area 1101 is greater than the distribution ratio of the plurality of first dummy traces 121 per unit area in the peripheral areas 1102. For example, in the first display area 11, along the direction from the peripheral areas 1102 to the middle area 1101 (for example, from the edge of the first display area 11 in the first direction R1 to the central axis L11), the distribution ratio of the plurality of first dummy traces 121 per unit area gradually increases. Since the distribution ratio of the plurality of signal transmission lines 110 per unit area in the middle area 1101 is less than the distribution ratio of the plurality of signal transmission lines 110 per unit area in the peripheral areas 1102, for example, in the first display area 11, along the direction from the peripheral areas 1102 to the middle area 1101, the distribution ratio of the plurality of signal transmission lines 110 per unit area gradually decreases. Therefore, in the display substrate 01 provided by the embodiments of the present disclosure, the distribution pattern of the first dummy traces 121 in the first display area 11 can cooperate with the distribution pattern of the signal transmission lines 110 in the first display area 11, thereby further optimizing the trace design in the first display area 11, further improving the uniformity and consistency of the trace layout in the first display area 11, and thus further improving the uniformity and consistency of the light passing through the first display area 11 and improving the light transmittance of the first display area 11.

[0077] It should be noted that the above "distribution ratio per unit area" refers to the distribution area of the traces per unit area, that is, the larger the distribution ratio per unit area, the larger the area covered by the traces in the area per unit area. For example, when the lengths of the traces are basically the same, the distribution of the traces in the corresponding area is denser and the number is larger; the smaller the distribution ratio per unit area, the smaller the area covered by the traces in the area per unit area. For example, when the lengths of the traces are basically the same, the distribution of the traces in the corresponding area is sparser and the number is smaller.

[0078] In some embodiments of the present disclosure, the signal transmission lines 110, the first dummy traces 121, and the second dummy traces 122 may respectively include transparent conductive traces, thereby further improving the light transmittance of the first display area 11 of the display substrate 01. The transparent conductive traces can be prepared using, for example, indium tin oxide (ITO) or other suitable transparent conductive materials.

[0079] In some embodiments of the present disclosure, the width of the first dummy trace 121 in the second direction R2 is the same as the width of the signal transmission line 110 in the second direction R2. Thereby, the uniformity and consistency of the distribution of the first dummy trace 121 and the signal transmission line 110 in the first display area 11 can be further improved, and the uniformity and stability of the circuit environment can also be improved, thereby improving the signal transmission effect of the signal transmission line 110.

[0080] In some embodiments of the present disclosure, such as Figure 3 , Figure 4 and Figure 5 as shown, the signal transmission line 110 is electrically connected to the anode of the first light-emitting element 411 through a via structure H1 that at least penetrates 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.

[0081] For example, the positive projection of the via structure H1 in a plane parallel to the display substrate 01 does not overlap with the positive projection of the first dummy trace 121 in a plane parallel to the display substrate 01. For example, in a direction perpendicular to the display substrate 01, the first dummy trace 121 is arranged as far as possible to avoid the position of the via structure H1. Thereby, the interference that the first dummy trace 121 may cause to the electrical signal provided to the first light-emitting element 411 can be weakened or avoided, thereby improving the stability of the operation of the first light-emitting element 411 and improving the light-emitting effect of the first light-emitting element 411.

[0082] It should be noted that according to the actual structure of the display substrate 01, the via structure H1 may also penetrate other film layers or structures located between the signal transmission line 110 and the anode of the first light-emitting element 411 in addition to the insulating layer to achieve 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 do not limit this.

[0083] For example, the first pixel circuit 412 includes a thin-film transistor, and the thin-film transistor includes a gate, a first pole, and a second pole. The signal transmission line 110 is electrically connected to the first pole or the second pole of the thin-film transistor, thereby providing the output signal of the first pixel circuit 412 to the first light-emitting element 411. For example, according to the circuit structure of the first pixel circuit 412, the thin-film transistor may be a driving thin-film transistor in the first pixel circuit 412, or a light-emitting control thin-film transistor in the first pixel circuit 412, or other types of thin-film transistors.

[0084] Figure 8 It is a schematic diagram of a stacked structure of a display substrate provided by at least one embodiment of the present disclosure. This schematic diagram of the stacked structure mainly schematically shows a partial structure of the first pixel circuit 412 and the first light-emitting element 411. For example,Figure 8 It can be a schematic diagram of the cross-sectional structure of the display substrate 01 along the Figure 5 line A-A' shown in

[0085] For example, as Figure 5 and Figure 8 shown, the display substrate 01 includes a source-drain metal layer (SD layer) located on the substrate 101, and the first and second poles (i.e., source and drain electrodes, such as source electrode 4123 and drain electrode 4124) of the thin-film transistor 412T of the first pixel circuit 412 are located on the source-drain metal layer.

[0086] The first light-emitting element 411 includes an anode 4111, a cathode 4113, and a first 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 above the source-drain metal layer, and the film layer where the signal transmission line 110 and the first dummy trace 121 ( Figure 8 not shown in

[0087] is located between the anode 4111 of the first light-emitting element 411 and the source-drain metal layer. The anode 4111 is electrically connected to the signal transmission line 110 through the via structure H1, and further electrically connected to the thin-film transistor 412T included in the first pixel circuit 412 through the signal transmission line 110.

[0088] For example, the thin-film transistor 412T includes structures such as an active layer 4121, a gate 4122, and source and drain electrodes (i.e., source electrode 4123 and drain electrode 4124). For example, the active layer 4121 is disposed on the substrate 101, and a first gate insulating layer 741 is disposed on the side of the active layer 4121 away from the substrate 101. The gate 4122 is located on the side of the first gate insulating layer 741 away from the substrate 101, and a second gate insulating layer 742 is disposed on the side of the gate 4122 away from the substrate 101. The source and drain electrodes are disposed on the side of the interlayer insulating layer 743 away from the 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 disposed on the side of the source and drain electrodes away from the substrate 101 to planarize the first pixel circuit 412.

[0089] For example, the planarization layer 744 has a via H2. 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 is then electrically connected to the anode 4111 through the signal transmission line 110.

[0090] For example, the first display region 11 further includes a transparent support layer 78 located on the substrate 101, and the first light-emitting element 411 is located on the side of the transparent support layer 78 away from the substrate 101. Thus, relative to the substrate 101, the first light-emitting element 411 in the first display region 11 can be at substantially the same height as the second light-emitting element in the second display region 12 (reference may be made to the description of the second display region 12 and the second light-emitting element 412 hereinafter) and the third light-emitting element in the third display region (reference may be made to the description of the third display region 13 and the third light-emitting element 413 hereinafter), thereby improving the display effect of the display substrate 01.

[0091] For example, the display substrate 01 further includes structures such as a pixel defining layer 746 and a packaging layer 747. For example, the pixel defining layer 746 is disposed on the anode 4111 (for example, a partial structure of the anode 4111), 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 defining layer 746. For example, the packaging layer 747 may include a single-layer or multi-layer packaging structure. The multi-layer packaging structure includes, for example, a stack of an inorganic packaging layer and an organic packaging layer, thereby improving the packaging effect of the display substrate 01.

[0092] For example, in various embodiments of the present disclosure, the 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. The embodiments of the present disclosure are not limited thereto.

[0093] For example, the first gate insulating layer 741, the second gate insulating layer 742, the interlayer insulating layer 743, the planarization 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, and silicon oxynitride, or may include organic insulating materials such as polyimide, polyphthalimide, polyamide, acrylic resin, benzocyclobutene, or phenolic resin. The embodiments of the present disclosure do not specifically limit the materials of the above-mentioned functional layers.

[0094] For example, the material of the active layer 4121 may include semiconductor materials such as polysilicon or oxide semiconductors (for example, indium gallium zinc oxide). For example, a part of the active layer 4121 can be made conductive through doping or other conductorization processes, thereby having high conductivity.

[0095] For example, the material of the gate 4122 may include a metal material or an alloy material, such as molybdenum, aluminum, titanium, etc.

[0096] For example, the materials of the source 4123 and the drain 4124 may include a metal material or an alloy material, such as a single-layer or multi-layer metal structure formed of molybdenum, aluminum, titanium, etc. For example, the multi-layer structure is a multi-metal layer stack, such as a three-layer metal stack of titanium, aluminum, and titanium (Ti / Al / Ti), etc.

[0097] In some embodiments of the present disclosure, as Figure 1 shown, the display area 10 further includes a third display area 13, and the third display area 13 at least partially surrounds (e.g., partially surrounds) the second display area 12, and the first display area 11, the second display area 12, and the third display area 13 do not overlap with each other. It should be noted that, in some examples, the display substrate 01 may further include a peripheral area, and the peripheral area at least partially surrounds the third display area 13.

[0098] For example, as Figure 2B and Figure 5 shown, the second display area 12 further includes at least one (e.g., a plurality of) second light-emitting elements 421 and at least one (e.g., a plurality of) second pixel circuits 422. The second light-emitting elements 421 are electrically connected to the second pixel circuits 422, for example, in a one-to-one correspondence. The second pixel circuits 422 are used to drive the second light-emitting elements 421 to emit light. It should be noted that, Figure 5 the rectangular frame indicated by the reference numeral 422 in

[0099] only shows the approximate position of the second pixel circuit 422, and does not represent the specific shape and the specific boundary of the second pixel circuit 422. 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. For example, at least one second light-emitting element 421 and its corresponding second pixel circuit 422 form a second pixel driving unit 42. Figure 5 It should be noted that, in

[0100] For example, a plurality of second light-emitting elements 421 are arranged in an array, and a plurality of second pixel circuits 422 are also arranged in an array. Here, "arranged in an array" may mean that a plurality of devices are grouped and multiple groups of devices are arranged in an array, or it may mean that a plurality of devices are arranged in an array by themselves. The embodiments of the present disclosure do not limit this. For example, in some examples, as Figure 5 shown, every 4 second light-emitting elements 421 form a group, and multiple groups of second light-emitting elements 421 are arranged in an array. Correspondingly, every 4 second pixel circuits 422 form a group, and multiple groups of second pixel circuits 422 are arranged in an array. At this time, each second pixel driving unit 42 includes 4 second pixel circuits 422 and 4 second light-emitting elements 421.

[0101] Figure 9 is Figure 1 an enlarged view of a partial area REG3 of the third display area 13 of the display substrate shown.

[0102] For example, as Figure 9 shown, the third display area 13 includes at least one (for example, a plurality of) third light-emitting element 431 and at least one (for example, a plurality of) third pixel circuit 432. The third light-emitting element 431 is electrically connected to the third pixel circuit 432, for example, electrically connected in a one-to-one correspondence. The third pixel circuit 432 is used to drive the third light-emitting element 431 to emit light. It should be noted that Figure 9 the rectangular frame indicated by the reference numeral 432 in

[0103] only shows the approximate position of the third pixel circuit 432, and does not represent the specific shape and specific boundary of the third pixel circuit 432. For example, a plurality of third light-emitting elements 431 are arranged in an array, and a plurality of third pixel circuits 432 are also arranged in an array. For example, at least one third light-emitting element 431 and its corresponding third pixel circuit 432 form a third pixel driving unit 43. Figure 9 It should be noted that in

[0104] Figure 9 shown, the third pixel driving unit 43 may include one third pixel circuit 432 and one third light-emitting element 431, or may include a plurality of third pixel circuits 432 and a plurality of third light-emitting elements 431. When the third pixel driving unit 43 includes a plurality of third pixel circuits 432 and a plurality of third light-emitting elements 431, the number of third pixel circuits 432 in each third pixel driving unit 43 is, for example, equal to the number of third light-emitting elements 431, thereby realizing one-to-one driving.As shown, every four third light-emitting elements 431 form a group, and multiple groups of third light-emitting elements 431 are arranged in an array. Correspondingly, every four third pixel circuits 432 form a group, and multiple groups of third pixel circuits 432 are arranged in an array. At this time, each third pixel driving unit 43 includes four third pixel circuits 432 and four third light-emitting elements 431.

[0105] For example, the unit area distribution density of multiple first light-emitting elements 411 in the first display area 11 is less than the unit area distribution density of multiple second light-emitting elements 421 in the second display area 12; the unit area distribution density of multiple second light-emitting elements 421 in the second display area 12 is less than the unit area distribution density of multiple third light-emitting elements 431 in the third display area 13. For example, the first display area 11 and the second display area 12 can be referred to as the low-resolution areas of the display substrate 01. Correspondingly, the third display area 13 can be referred to as the high-resolution area of the display substrate 01. For example, the sum of the pixel light-emitting areas of the second display area 12 and the first display area 11 can be 1 / 8 to 1 / 2 of the pixel light-emitting area of the third display area 13.

[0106] It should be noted that in some examples, the unit area distribution density of multiple first light-emitting elements 411 in the first display area 11 can also be equal to the unit area distribution density of multiple second light-emitting elements 421 in the second display area 12, which can be determined according to actual needs, and the embodiments of the present disclosure do not limit this.

[0107] By increasing the unit area distribution density of the light-emitting elements in the first display area 11, the second display area 12, and the third display area 13 in sequence, while ensuring that the three display areas emit light normally to display the picture, it is convenient for the light on the first side of the display substrate 01 to pass through the first display area 11 to reach the second side, and further convenient for the sensor provided on the second side of the display substrate 01 to sense the light.

[0108] For example, the first light-emitting element 411, the second light-emitting element 421, and the third light-emitting element 431 respectively include an organic light-emitting diode (OLED). Of course, the embodiments of the present disclosure are not limited thereto. The first light-emitting element 411, the second light-emitting element 421, and the third light-emitting element 431 can also be quantum dot light-emitting diodes (QLEDs) or other applicable light-emitting devices, and the embodiments of the present disclosure do not limit this.

[0109] For example, the display substrate 01 provided by the embodiments of the present disclosure can be an organic light-emitting diode (OLED) display substrate or a quantum dot light-emitting diode (QLED) display substrate, etc. The embodiments of the present disclosure do not limit the specific type of the display substrate.

[0110] For example, in the case where the display substrate is an organic light-emitting diode display substrate, the light-emitting layer (such as the aforementioned first light-emitting layer 4112) may include a small molecule organic material or a polymer molecule organic material, may be a fluorescent light-emitting material or a phosphorescent light-emitting material, may emit red light, green light, blue light, or may emit white light, etc. Moreover, according to actual different requirements, 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, and a hole transport layer.

[0111] For example, in the case where the display substrate is a quantum dot light-emitting diode (QLED) display substrate, the light-emitting layer (such as the aforementioned 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, etc. The particle size of the quantum dots is, for example, 2 nm to 20 nm.

[0112] At least one embodiment of the present disclosure further provides a display device, and the display device includes the display substrate provided in any embodiment of the present disclosure.

[0113] Figure 10 It is a schematic block diagram of a display device provided in at least one embodiment of the present disclosure. For example, as Figure 10 shown, the display device 30 includes a display substrate 310, and the display substrate 310 may be the display substrate provided in any embodiment of the present disclosure, such as the aforementioned display substrate 01.

[0114] The display device 30 may be any electronic device having a display function, such as a smart phone, a notebook computer, a tablet computer, a television, etc. For example, when the display device 30 is a smart phone or a tablet computer, the smart phone or the tablet computer may have a full-screen design, that is, there is no peripheral area around, for example, the first display area 11, the second display area 12, or the third display area 13. Moreover, the smart phone or the tablet computer also has an under-screen sensor (such as a camera, an infrared sensor, etc.), and can perform operations such as image shooting, distance sensing, and light intensity sensing.

[0115] It should be noted that for other components of the display substrate 310 and the display device 30 (such as an image data encoding / decoding device, a clock circuit, etc.), applicable components may be adopted, and these are all understandable to those of ordinary skill in the art, and will not be elaborated here, nor should they be regarded as a limitation to the embodiments of the present disclosure.

[0116] Figure 11 It is a schematic diagram of a stacked structure of a display device provided in at least one embodiment of the present disclosure. For example, as Figure 11As shown, the display device 30 includes a display substrate 310, and the display substrate 310 may be the display substrate provided in any embodiment of the present disclosure, such as the aforementioned display substrate 01. For example, the display device 30 further includes a sensor 320.

[0117] For example, taking the display substrate 310 as the aforementioned display substrate 01 as an example, the display substrate 01 includes a first side F1 for display and a second side F2 opposite to the first side F1. That is to say, 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 the first side F1 faces the user. The first side F1 and the second side F2 are opposed in the normal direction of the display surface of the display substrate 01.

[0118] As Figure 11 shown, the sensor 320 is disposed on the second side F2 of the display substrate 01, and the sensor 320 is configured to receive light from the first side F1. For example, the sensor 320 is stacked with the first display area 11 in the normal direction of the display surface of the display substrate 01 (for example, the direction perpendicular to the display substrate 01). The sensor 320 can receive and process the optical signal passing through the first display area 11, and the optical signal can be visible light, infrared light, etc. For example, the first display area 11 allows at least part of the light from the first side F1 to be transmitted to the second side F2. For example, no pixel circuit is provided in the first display area 11. In this case, the light transmittance of the first display area 11 can be improved.

[0119] For example, the orthographic projection of the sensor 320 on the display substrate 01 at least partially overlaps with the first display area 11. For example, in some examples, when the direct-lit setting method is adopted, the orthographic projection of the sensor 320 on the display substrate 01 is located within the first display area 11. For example, in other examples, when other light guiding elements (such as a light guide plate, a light guide tube, etc.) are used to make the light incident on the sensor 320 from the side, the orthographic projection of the sensor 320 on the display substrate 01 partially overlaps with the first display area 11. At this time, since the light can propagate laterally to the sensor 320, it is not necessary for the sensor 320 to be completely located at the position corresponding to the first display area 11.

[0120] For example, by disposing the first pixel circuit 412 in the second display area 12 and stacking the sensor 320 with the first display area 11 in the normal direction of the display surface of the display substrate 01, the shielding of the components in the first display area 11 from the optical signal incident on the first display area 11 and irradiating the sensor 320 can be reduced, thereby improving the signal-to-noise ratio of the image output by the sensor 320. For example, the first display area 11 can be referred to as a high-transmittance area of the low-resolution area of the display substrate 01.

[0121] For example, the sensor 320 can be an image sensor, which can be used to collect images of the external environment facing the light collecting surface of the sensor 320. For example, it can be a CMOS image sensor or a CCD image sensor. The sensor 320 can also be an infrared sensor, a distance sensor, etc. For example, in the case where the display device 30 is a mobile terminal such as a mobile phone or a notebook, the sensor 320 can be implemented as a camera of a mobile terminal such as a mobile phone or a notebook, and may further include optical devices such as lenses, mirrors, or optical waveguides as needed to modulate the optical path. For example, the sensor 320 can include photosensitive pixels arranged in an array. For example, each photosensitive pixel can include a photosensitive detector (e.g., a photodiode, a phototransistor) and a switching transistor (e.g., a switching thin-film transistor). For example, the photodiode can convert the light signal irradiated thereon into an electrical signal, and the switching transistor can be electrically connected to the photodiode to control whether the photodiode is in a state of collecting light signals and the time of collecting light signals.

[0122] In some examples, if the anode of the first light-emitting element 411 adopts a stacked structure of ITO / Ag / ITO, then in the first display area 11, only the anode of the first light-emitting element 411 is opaque. That is, the trace for driving the first light-emitting element 411 (e.g., the signal transmission line 110 described above) and the trace insulated from the first light-emitting element 411 (e.g., the first dummy trace 121 or the second dummy trace 122) are set as transparent traces. In this case, not only can the light transmittance of the first display area 11 be further improved, but also the uniformity and consistency of the light passing through the first display area 11 can be improved, thereby weakening or avoiding problems such as reflection that may occur when the sensor 320 receives light, which helps the sensor 320 to accurately perform operations such as image capture, distance sensing, and light intensity sensing, and helps to improve the performance of the display device 30 (e.g., a full-screen display device).

[0123] It should be noted that 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 do not limit this. For the technical effects and detailed description of the display device 30, reference can be made to the description of the display substrate 01 above, and details are not repeated here.

[0124] For example, the above display device 30 can be a display substrate, a display panel, an electronic paper, a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, or any product or component with a display function, and the embodiments of the present disclosure do not limit this.

[0125] For the specific description and technical effects of the display device 30 provided in the embodiments of the present disclosure, reference may be made to the corresponding content in the display substrate provided in the embodiments of the present disclosure. For example, reference may be made to the corresponding content of the display substrate 01 in the above embodiments, which will not be elaborated herein.

[0126] The following points also need to be noted:

[0127] (1) The drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can refer to the general design.

[0128] (2) For clarity, in the drawings used to describe the embodiments of the present disclosure, the thickness of layers or regions is enlarged or reduced, that is, these drawings are not drawn to actual scale. It can be understood that when an element such as a layer, film, region, or first substrate is referred to as being "on" or "under" another element, the element can be "directly" on or under the other element or there can be an intermediate element.

[0129] (3) Without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0130] As mentioned above, the above is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered by the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A display substrate having a first side for display and a second side opposite to the first side, and including a display area; Wherein, The display area includes a first display area and a second display area, the second display area at least partially surrounds the first display area, and the first display area and the second display area do not overlap with each other; The first display area includes at least one first light-emitting element, and the first display area allows 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 orthographic projection of the first light-emitting element in a plane parallel to the display substrate does not overlap with the orthographic projection of the first pixel circuit in a plane parallel to the display substrate; At least one signal transmission line and at least one first dummy trace are provided on the display substrate; 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 through the signal transmission line; The first dummy trace 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 trace extend along a first direction, and the orthographic projection of the first dummy trace in a plane parallel to the display substrate is at least partially offset from the orthographic projection of the signal transmission line in a plane parallel to the display substrate.

2. The display substrate according to claim 1, wherein, The first dummy trace and the signal transmission line are located on the same layer.

3. The display substrate according to claim 1 or 2, wherein, The first dummy trace and the signal transmission line both extend linearly and are parallel to each other.

4. The display substrate according to claim 1 or 2, wherein, The at least one first dummy trace includes a plurality of first dummy traces, and the plurality of first dummy traces are arranged along a second direction different from the first direction and are configured to receive a first voltage signal; The display substrate further includes at least one second dummy trace, and the second dummy trace extends along the second direction and is electrically connected to the plurality of first dummy traces so that the plurality of first dummy traces are electrically connected to each other to receive the first voltage signal.

5. The display substrate according to claim 4, wherein, At least one of the plurality of first dummy traces is electrically connected to a first power supply line providing the first voltage signal through a via structure.

6. The display substrate according to claim 4, wherein, The second dummy trace and the first dummy trace are located on the same layer, or The second dummy trace and the first dummy trace are located in different film layers, and the different film layers are insulated from each other at positions where no vias are provided.

7. The display substrate according to claim 4, wherein, 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 traces form a wiring array, one signal transmission line serves as a line unit in the wiring array, and one first dummy trace serves as a line unit in the wiring array; The distance between at least one line unit in the wiring array and an adjacent line unit in the second direction is equal.

8. The display substrate according to claim 7, wherein, The first display area includes a middle area and peripheral areas located on both sides of the middle area in the first direction; The central axis of the first display area is located in the middle area, and the peripheral area is adjacent to the second display area. The unit - area distribution ratio of the multiple first dummy traces in the middle region is greater than the unit - area distribution ratio of the multiple first dummy traces in the peripheral region.

9. The display substrate according to claim 4, wherein, The signal transmission line, the first dummy trace, and the second dummy trace each include a transparent conductive trace.

10. The display substrate according to claim 1 or 2, wherein, The width of the first dummy trace in a second direction different from the first direction is the same as the width of the signal transmission line in the second direction.

11. The display substrate according to claim 1 or 2, wherein, The signal transmission line is electrically connected to the anode of the first light - emitting element through a via structure that at least penetrates the insulating layer between the signal transmission line and the anode of the first light - emitting element.

12. The display substrate according to claim 11, wherein, The orthographic projection of the via structure in a plane parallel to the display substrate does not overlap with the orthographic projection of the at least one first dummy trace in a plane parallel to the display substrate.

13. The display substrate according to claim 1 or 2, wherein, The first pixel circuit includes a thin - film transistor, and the thin - film transistor includes a gate, a first pole, and a second pole. The signal transmission line is electrically connected to the first pole or the second pole of the thin - film transistor.

14. The display substrate according to claim 13 further includes a source-drain metal layer, wherein, The first pole and the second pole of the thin - film transistor are located in the source - drain metal layer, and the anode of the first light - emitting element is located above the source - drain metal layer. The film layer where the signal transmission line and the first dummy trace are located is between the anode of the first light - emitting element and the source - drain metal layer.

15. The display substrate according to claim 1 or 2, wherein, 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, and the second light - emitting element is electrically connected to the second pixel circuit. The third display area 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.

16. The display substrate according to claim 15, wherein, The first light - emitting element, the second light - emitting element, and the third light - emitting element each include an organic light - emitting diode.

17. The display substrate according to claim 15, wherein, The at least one first light - emitting element includes a plurality of first light - emitting elements, the at least one second light - emitting element includes a plurality of second light - emitting elements, and the at least one third light - emitting element includes a plurality of third light - emitting elements. The unit - area distribution density of the plurality of first light - emitting elements in the first display area is less than or equal to the unit - area distribution density of the plurality of second light - emitting elements in the second display area. The unit - area distribution density of the plurality of second light - emitting elements in the second display area is less than the unit - area distribution density of the plurality of third light - emitting elements in the third display area.

18. The display substrate according to claim 1 or 2, wherein, The ratio of the area of the region covered by the orthographic projection of the at least one signal transmission line in a plane parallel to the display substrate and the orthographic projection of the at least one first dummy trace in a plane parallel to the display substrate in the first display area to the area of the first display area is 70% - 95%.

19. A display device includes the display substrate according to any one of claims 1-18.

20. The display device according to claim 19 further includes a sensor, wherein, The sensor is located on the second side of the display substrate and is configured to receive light from the first side of the display substrate.

21. The display device according to claim 20, wherein, The orthographic projection of the sensor on the display substrate at least partially overlaps with the first display area.

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