Display substrate, display panel and display device

Abstract

The embodiment of the present disclosure provides a display substrate, a display panel and a display device. The display substrate includes: a substrate, the substrate is divided into a display area and a peripheral area surrounding the display area, the display area includes a light-transmitting display area and a first display area located around the light-transmitting display area, a plurality of first light-emitting units distributed in an array are arranged in the light-transmitting display area, and a plurality of first pixel driving circuits are arranged in the first display area; the display substrate also includes: a plurality of transparent conductive traces connected to the first light-emitting units in a one-to-one correspondence, a portion of the transparent conductive traces is located in the light-transmitting display area and electrically connected to the corresponding first light-emitting unit, another portion of the transparent conductive traces extends to the first display area and is electrically connected to the first pixel driving circuit corresponding to the first light-emitting unit; at least one first connecting line, a portion of the first connecting line is located in the first display area and is electrically connected to the corresponding at least one transparent conductive trace, and another portion of the first connecting line extends to the peripheral area.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display substrate, a display panel and a display device. Background Art

[0002] Full screen is one of the important development trends of display panels in recent years. One kind of full screen display panel in related technologies is realized by setting up an under-screen camera. These display panels only retain light-emitting units in the camera area, and control the light-emitting units located in the camera area through driving circuits in the same row or column as these light-emitting units. Summary of the invention

[0003] Embodiments of the present disclosure provide a display substrate, a display panel, and a display device.

[0004] In a first aspect, an embodiment of the present disclosure provides a display substrate, comprising: a substrate, the substrate being divided into a display area and a peripheral area surrounding the display area, the display area comprising a light-transmitting display area and a first display area located around the light-transmitting display area, a plurality of first light-emitting units distributed in an array being arranged in the light-transmitting display area, and a plurality of first pixel driving circuits being arranged in the first display area;

[0005] The display substrate further comprises:

[0006] a plurality of transparent conductive traces connected to the first light-emitting units in a one-to-one correspondence, wherein a portion of the transparent conductive traces is located in the light-transmitting display area and is electrically connected to the corresponding first light-emitting unit, and another portion of the transparent conductive traces extends to the first display area and is electrically connected to the first pixel driving circuit corresponding to the first light-emitting unit;

[0007] At least one first connection line, a portion of the first connection line is located in the first display area and is electrically connected to the corresponding at least one transparent conductive trace, and another portion of the first connection line extends to the peripheral area.

[0008] In some embodiments, the number of the first connection lines is multiple, and the display substrate further includes:

[0009] At least one second connection line, the second connection line is located in the peripheral area, and the second connection line is electrically connected to the corresponding at least two first connection lines.

[0010] In some embodiments, the display substrate further comprises:

[0011] At least one first transistor, wherein the first transistor is located in the peripheral area, the control electrode of the first transistor is electrically connected to a preset first pad, the first electrode of the first transistor is electrically connected to a preset second pad, and the second electrode of the first transistor is electrically connected to at least one corresponding second connection line.

[0012] In some embodiments, a plurality of first light-emitting units located in the light-transmitting display area are divided into first light-emitting unit groups arranged along a first direction, and each first light-emitting unit group includes the first light-emitting units arranged along a second direction; wherein the first direction is an extension direction of the transparent conductive trace, and the second direction Y intersects with the first direction;

[0013] The transparent conductive traces of the first light-emitting units in the first light-emitting unit groups arranged at intervals are all configured with the first connecting wires.

[0014] In some embodiments, the transparent conductive traces corresponding to all first light-emitting units in the same first light-emitting unit group are connected to the same first connecting line.

[0015] In some embodiments, the light-transmitting display area includes 2N first light-emitting unit groups arranged along the first direction, wherein:

[0016] All the first connecting lines configured for the first light-emitting units located in the 1st to Nth first light-emitting unit groups and configured with the first connecting lines are electrically connected to the same second connecting line;

[0017] All the first connection lines configured for the first light emitting units in the N+1th to 2Nth first light emitting unit groups and configured with the first connection lines are electrically connected to another second connection line,

[0018] Wherein, N is a positive integer.

[0019] In some embodiments, the number of the first transistors is two, wherein,

[0020] Each of the first transistors is connected to one of the second connection lines, and different first transistors are connected to different second connection lines.

[0021] In some embodiments, the display substrate further comprises:

[0022] An active layer, a gate insulating layer, a first conductive layer, a first insulating layer, a second conductive layer, a second insulating layer, a third conductive layer and a fourth conductive layer are sequentially stacked on the substrate, wherein:

[0023] The active layer includes: active layer patterns and source-drain doping region patterns of each transistor in the first pixel driving circuit;

[0024] The first conductive layer includes: control electrodes of each transistor in the first pixel driving circuit, a reset control signal line, a gate line, a first electrode plate of a storage capacitor and a light emitting control signal line;

[0025] The second conductive layer includes: a reset voltage transmission line and a second plate of the storage capacitor;

[0026] The third conductive layer includes: a first connecting portion;

[0027] The fourth conductive layer includes: a data line, a first operating voltage transmission line and a second connecting portion;

[0028] The second electrode of the second light emitting control transistor is connected to the transparent conductive trace through the first connecting portion and the second connecting portion in sequence;

[0029] The first connecting line is located in the third conductive layer and is electrically connected to the first connecting portion.

[0030] In a second aspect, an embodiment of the present disclosure provides a display panel, comprising the display substrate provided in the second aspect, and an encapsulation layer and a touch layer located on the display substrate.

[0031] In a third aspect, an embodiment of the present disclosure provides a display device, comprising the display panel provided in the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0033] Figure 1 A schematic diagram of a planar structure of a display substrate provided in an embodiment of the present disclosure;

[0034] Figure 2a A schematic diagram of a partial structure of another display substrate provided in an embodiment of the present disclosure;

[0035] Figure 2b A schematic diagram of a cutting position of a first connecting line provided in an embodiment of the present disclosure;

[0036] Figure 2c A schematic diagram of a partial structure of another display substrate provided in an embodiment of the present disclosure;

[0037] Figure 3 A schematic diagram of the structure of a display area of ​​a display substrate provided in an embodiment of the present disclosure;

[0038] Figure 4 A schematic structural diagram of a first pixel driving circuit provided in an embodiment of the present disclosure;

[0039] Description of reference numerals:

[0040] Substrate 1, display area AA, first display area AA1, second display area AA2, peripheral area NA, light-transmitting display area AA3; first direction X, second direction Y;

[0041] A first light emitting unit group 20, a first light emitting unit 2, a light emitting pixel unit 2', a first pixel driving circuit 3, a transparent conductive trace 4, a first connecting line 5, a second connecting line 6, a first transistor 7, a first pad 81, and a second pad 82;

[0042] The active layer 11 , the gate insulating layer 12 , the first conductive layer 13 , the first insulating layer 14 , the second conductive layer 15 , the second insulating layer 16 , the third conductive layer 17 , the fourth conductive layer 18 , the first connecting portion 170 , and the second connecting portion 180 . DETAILED DESCRIPTION

[0043] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0045] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not represent any order, quantity or importance, but are only used to distinguish different components. Similarly, "including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0046] With the development of display technology, there are more and more additional components on the display panel, among which the most common additional component is the camera. However, the camera component limits the screen-to-body ratio of the display panel. Based on this, a full-screen display panel is provided in the related art, which achieves a higher screen-to-body ratio by setting an under-screen camera. These display panels only retain light-emitting units in the light-transmitting display area, and control the light-emitting units located in the light-transmitting display area through pixel driving circuits in the same row or column as these light-emitting units.

[0047] Specifically, the light-emitting unit located in the light-transmitting display area only includes a light-emitting element, and the first electrode of the light-emitting element is electrically connected to the corresponding pixel driving circuit through a transparent conductive trace to provide a driving signal to the light-emitting unit. Each light-emitting unit in the light-transmitting display area is configured with a transparent conductive trace, and the multiple transparent conductive traces are arranged at dense locations, and short circuits are likely to occur between different transparent conductive traces.

[0048] At the same time, in the current display panel detection process, only all the light-emitting units in the display panel can be lit for testing, and the light-emitting units cannot be lit row by row or column by column. Therefore, it is impossible to detect whether there is a short circuit between different transparent conductive traces corresponding to different light-emitting units in the translucent display area, resulting in missed detection.

[0049] In order to solve at least one of the above-mentioned technical problems, an embodiment of the present disclosure provides a display substrate, which extends the transparent conductive trace corresponding to the first light-emitting unit located in the transparent display area to the peripheral area by adding a first connecting line, so as to realize the detection of any transparent conductive trace to determine whether there is a short circuit between it and other transparent conductive traces, thereby improving the product yield of the display substrate.

[0050] Figure 1 A schematic diagram of a planar structure of a display substrate provided in an embodiment of the present disclosure is shown in FIG. Figure 1 As shown, the display substrate includes: a substrate 1, the substrate 1 is divided into a display area and a peripheral area NA surrounding the display area, the display area includes a light-transmitting display area AA3 and a first display area AA1 located around the light-transmitting display area AA3, a plurality of first light-emitting units 2 distributed in an array are arranged in the light-transmitting display area AA3, and a plurality of first pixel driving circuits 3 are arranged in the first display area AA1.

[0051] The display substrate further includes: a plurality of transparent conductive traces 4 and at least one first connection line 5. The transparent conductive traces 4 are connected to the first light-emitting units 2 in a one-to-one correspondence, a portion of the transparent conductive traces 4 is located in the light-transmitting display area AA3 and is electrically connected to the corresponding first light-emitting unit 2, and another portion of the transparent conductive traces 4 extends to the first display area AA1 and is electrically connected to the first pixel driving circuit 3 corresponding to the first light-emitting unit 2; a portion of the first connection line 5 is located in the first display area AA1 and is electrically connected to the corresponding at least one transparent conductive trace 4, and another portion of the first connection line 5 extends to the peripheral area NA.

[0052] In the display substrate provided by the embodiment of the present disclosure, the first light-emitting unit 2 located in the light-transmitting display area AA3 is electrically connected to the first pixel driving circuit 3 located in the first display area AA1 through the transparent conductive wire 4, so that the first pixel driving circuit 3 provides a driving signal to the first light-emitting unit 2. At the same time, part of the first connecting line 5 is electrically connected to the transparent conductive wire 4, and the other part extends to the peripheral area NA, that is, the transparent conductive wire 4 extends to the peripheral area NA through the first connecting line 5. In this case, it is possible to detect whether any transparent conductive wire 4 is short-circuited with at least one transparent conductive wire 4 around it according to the detection requirements. Specifically, a detection signal is output to the corresponding transparent conductive wire 4 through the first connecting line 5, and by determining whether the first light-emitting unit 2 that is lit is only the first light-emitting unit 2 corresponding to the transparent conductive wire 4, it is determined whether the transparent conductive wire 4 is short-circuited with other transparent conductive wires 4, thereby improving the product yield of the display substrate.

[0053] Optionally, the first display area AA1 can be located around the light-transmitting display area AA3, or can be arranged around the light-transmitting display area AA3. The first display area AA1 can also be arranged at the lateral edge or the longitudinal edge of the light-transmitting display area AA3, which helps to reduce the length of the transparent conductive trace 4. In addition, the base 1 of the display substrate is also divided into a second display area AA2, and the first display area AA1 is located between the second display area AA2 and the light-transmitting display area AA3. The specific structures of the first display area AA1 and the second display area AA2 are described in detail in the following embodiments, and will not be repeated here.

[0054] In addition, in the embodiment of the present disclosure, the transparent conductive trace 4 is made of a transparent and conductive material, such as indium tin oxide (ITO), so that it can transmit electrical signals to the first light-emitting unit 2 without affecting the transparency of the light-transmitting display area AA3, thereby ensuring the imaging effect of the camera assembly. Similarly, part of the first connecting line 5 is electrically connected to the transparent conductive trace 4, that is, part of the first connecting line 5 is located in the light-transmitting display area AA3. Therefore, in order not to affect the imaging effect of the camera assembly, the first connecting line 5 and the transparent conductive trace 4 are made of the same material.

[0055] In some embodiments, there are multiple first connection lines 5 , and the display substrate further includes: at least one second connection line 6 , the second connection line 6 is located in the peripheral area NA, and the second connection line 6 is electrically connected to the corresponding at least two first connection lines 5 .

[0056] It should be understood that, usually, the light-transmitting display area AA3 is located above the display substrate, and the pad that provides the detection signal for the first connection line 5 is located below the display substrate, so it is necessary to set the second connection line 6 in the peripheral area NA to connect the pad and the first connection line 5 to facilitate the provision of the detection signal. In addition, since the second connection line 6 is electrically connected to the corresponding at least two first connection lines 5, a second connection line 6 can be used to simultaneously provide a detection signal for multiple first connection lines 5, which is convenient for loading and outputting the detection signal.

[0057] When the second connection line 6 is connected to multiple first connection lines 5, each first connection line 5 is connected to at least one transparent conductive trace 4, that is, there are multiple transparent conductive traces 4 electrically connected to the second connection line 6, so multiple transparent conductive traces 4 can be detected simultaneously.

[0058] Specifically, Figure 1 As shown, the light-transmitting display area AA3 includes 2N first light-emitting unit groups 20 arranged along the first direction X, and the first direction X is the extension direction of the transparent conductive trace; wherein, all first connection lines 5 configured by the first light-emitting units 2 configured with the first connection lines 5 in the 1st to Nth first light-emitting unit groups 20 are electrically connected to the same second connection line 6; and all first connection lines 5 configured by the first light-emitting units 2 configured with the first connection lines 5 in the N+1st to 2Nth first light-emitting unit groups 20 are electrically connected to another second connection line 6, wherein N is a positive integer. That is, the light-emitting unit groups located on the left and right sides of the light-transmitting display area AA3 correspond to different second connection lines 6, which facilitates the wiring of the second connection lines 6 in the peripheral area NA, and avoids the dense arrangement of the connection lines to interfere with the signal.

[0059] In some embodiments, Figure 1 As shown, the number of first transistors 7 is two, wherein each first transistor 7 is connected to a second connection line 6, and different first transistors 7 are connected to different second connection lines 6. Two transistors can simultaneously provide detection signals to the corresponding second connection lines 6 to save detection time; and by providing multiple first transistors 7, the load of the second connection line 6 can be reduced and the detection efficiency can be improved.

[0060] In some embodiments, the display substrate further includes: at least one first transistor 7, the first transistor 7 is located in the peripheral area NA, the control electrode of the first transistor 7 is electrically connected to the preset first pad 81, the first electrode of the first transistor 7 is electrically connected to the preset second pad 82, and the second electrode of the first transistor 7 is electrically connected to the corresponding at least one second connection line 6. The first transistor 7 is configured to provide a detection signal to the second connection line 6 to detect the at least one transparent conductive trace 4.

[0061] It should be noted that in the embodiment of the present disclosure, in order to distinguish the source and drain of the transistor, one of the electrodes is called the first electrode and the other electrode is called the second electrode; the gate of the transistor is called the control electrode. In addition, transistors can be divided into N-type and P-type according to the characteristics of the transistor. When a P-type transistor is used, the first electrode is the drain of the P-type transistor, and the second electrode is the source of the P-type transistor, and the N-type is the opposite. The N-type transistor is turned on when a high-level signal is applied to its control electrode and is turned off when a low-level signal is applied to its control electrode. The P-type transistor is turned on when a low-level signal is applied to its control electrode and is turned off when a high-level signal is applied to its control electrode. In the embodiment of the present disclosure, an exemplary description is given by taking the first transistor 7 as a P-type transistor as an example.

[0062] In a specific implementation, the pixel driving circuit is used to control the first display area AA1 and the second display area AA2 not to display, or the display screen is black. At the same time, a low-level signal is provided to the control electrode of the first transistor 7 through the first pad 81, and a high-level signal is provided to the first electrode of the first transistor 7 through the second pad 82. Then, the first transistor 7 is turned on and a detection signal is provided to the second connecting line 6.

[0063] In some embodiments, the plurality of first light-emitting units 2 located in the light-transmitting display area AA3 are divided into first light-emitting unit groups 20 arranged along the first direction X, and each first light-emitting unit group 20 includes first light-emitting units 2 arranged along the second direction Y; the transparent conductive traces 4 of the first light-emitting units 2 in the first light-emitting unit groups 20 arranged at intervals are all configured with first connecting wires 5. The second direction Y intersects with the first direction X, for example, the first direction X may be a row direction, and the second direction Y is perpendicular to the first direction X.

[0064] It should be noted that the above-mentioned interval arrangement refers to the first light emitting unit groups 20 being arranged at intervals of one first light emitting unit group 20 .

[0065] In one example, the leftmost first light emitting unit group 20 in the light-transmitting display area AA3 is the first first light emitting unit group, and the rightmost first light emitting unit group 20 in the light-transmitting display area AA3 is the last first light emitting unit group. The transparent conductive traces 4 of the first light emitting units 2 in the odd-numbered first light emitting unit groups 20 are all configured with first connecting wires 5.

[0066] Optionally, when light-emitting units are arranged in the light-transmitting display area AA3, the first light-emitting units 2 corresponding to the light-emitting elements with the same light-emitting color can be arranged in odd positions, that is, the light-emitting colors of the first light-emitting units 2 located in odd columns in the light-transmitting display area AA3 are the same color. In this case, since the light-emitting colors of the first light-emitting units 2 in the first light-emitting unit groups 20 located in even positions are different, when the display substrate is inspected, it can be determined whether there is a short circuit phenomenon by the color difference of the first light-emitting units 2; at the same time, the transparent conductive traces 4 of the first light-emitting units 2 in the first light-emitting unit groups 20 located in odd positions are all configured with first connecting wires 5, and a detection signal is provided to the first connecting wires 5 to detect whether the corresponding transparent conductive traces 4 are short-circuited with other transparent conductive traces 4.

[0067] Similarly, transparent conductive traces of the first light emitting units in the even-numbered first light emitting unit groups may also be configured with first connecting wires, which belongs to the same inventive concept as the above embodiment and will not be described in detail here.

[0068] Figure 2a A partial structural schematic diagram of another display substrate provided in an embodiment of the present disclosure is provided for the convenience of description. Figure 2a Only the structure in which a first connecting line 5 is disposed on each of the left and right sides of the light-transmitting display area AA3 is shown.

[0069] In one example, if Figure 2aAs shown, four first light-emitting unit groups 20 arranged along the first direction X are provided in the light-transmitting display area AA3, wherein the light-emitting colors of the first light-emitting units 2 in the first light-emitting unit groups 20 in the first group and the third group are the same. Specifically, each light-emitting unit in the first group and the third group of first light-emitting unit groups 20 located in odd positions is configured with a corresponding transparent conductive trace 4. Further, the transparent conductive trace 4 corresponding to each light-emitting unit in the first group of first light-emitting unit groups 20 is connected to the first connecting line 5a, and the transparent conductive trace 4 corresponding to each light-emitting unit in the third group of first light-emitting unit groups 20 is connected to the first connecting line 5b. During detection, a detection signal is provided to the first connecting line 5a. If only the first light-emitting unit 2 in the first group of first light-emitting unit groups 20 emits light and displays, it indicates that there is no short-circuit phenomenon. If any first light-emitting unit 2 in the third group of first light-emitting unit groups 20 emits light and displays, it indicates that there is a short-circuit phenomenon. Similarly, a detection signal is provided to the first connecting line 5 b , and the display substrate normally displays only the first light emitting unit 2 in the third group of first light emitting units 20 , otherwise there is a short circuit phenomenon.

[0070] In some embodiments, see Figure 2a The transparent conductive traces 4 corresponding to the multiple first light-emitting units 2 in the same group of first light-emitting unit groups 20 can be connected to the same first connecting line 5, that is, one group of first light-emitting unit groups 20 is correspondingly configured with one first connecting line 5. Since the short circuit phenomenon in the display substrate occurs between adjacent odd-numbered first light-emitting unit groups 20, the transparent conductive traces 4 corresponding to the same first light-emitting unit group 20 can be configured with the same first connecting line 5, thereby simplifying the detection steps.

[0071] In other embodiments, the transparent conductive traces 4 corresponding to the multiple first light-emitting units 2 in the same group of first light-emitting unit groups 20 can be connected to different first connecting lines 5, that is, each light-emitting unit in a group of first light-emitting unit groups 20 is configured with a corresponding first connecting line 5.

[0072] See also Figure 2a , the first display area AA1 includes a plurality of redundant pixel units and a plurality of luminous pixel units 2', wherein the redundant pixel units are provided with a first pixel driving circuit 3 that provides a driving signal for the first luminous unit 2, and the luminous pixel unit 2' is provided with a second luminous unit and a corresponding second pixel driving circuit (not shown in the figure). In other words, the first display area AA1 is not only used to realize the conventional display function, but also used to configure a corresponding driving function layer for the first luminous unit 2 in the light-transmitting display area AA3. In addition, in order to ensure the imaging effect of the camera assembly, the data line Data and the gate line Gate are arranged around the light-transmitting display area AA3.

[0073] It should be understood that the second display area AA2 includes a plurality of light-emitting pixel units 2 ′, which are configured to perform a conventional light-emitting display function.

[0074] Figure 2b A schematic diagram of a cutting position of a first connecting line provided in an embodiment of the present disclosure. It should be noted that when a first light-emitting unit group 20 is configured with a first connecting line 5, after the display substrate test phase is completed, the first connecting line 5 needs to be cut and disconnected from each transparent conductive trace 4. Specifically, Figure 2b Laser cutting is performed at the position marked with “×” in the middle, so as to avoid the situation where, when the display substrate is displaying images, multiple first light-emitting units 2 in the same first light-emitting unit group 20 are connected in series by the first connecting line 5 and can only receive the same driving signal at the same time, thus affecting the display effect of the display panel.

[0075] Figure 2c A partial structural diagram of another display substrate provided in an embodiment of the present disclosure is shown in FIG. Figure 2c As shown, it should be noted that the transparent conductive traces 4 of the first light-emitting units 2 in different first light-emitting unit groups 20 in the present disclosure can be connected to the same first connecting line 5a. For example, Figure 2c The transparent conductive traces 4 of each first light emitting unit 2 in the first light emitting unit group 20 located at the first position and the first light emitting unit group 20 located at the third position are connected to the same first connecting line 5a.

[0076] In addition, in the embodiment of the present disclosure, two or more first light-emitting units 2 can be connected to the same first pixel driving circuit 3 through corresponding transparent conductive traces 4, that is, one first pixel driving circuit 3 can be used to drive two or more different first light-emitting units 2. For example, Figure 2c In the embodiment, one first pixel driving circuit 3 may drive two first light emitting units 2 located in different first light emitting unit groups 20. The technical solution disclosed in the present invention also does not limit the corresponding relationship between the first pixel driving circuit 3 and the first light emitting unit 2.

[0077] Figure 3 A schematic diagram of the structure of a display area of ​​a display substrate provided in an embodiment of the present disclosure, Figure 4 It is a schematic diagram of the structure of the first pixel driving circuit provided in the embodiment of the present disclosure. It should be noted that the circuit structure of the second pixel driving circuit located in the first display area AA1 / second display area AA2 is consistent with that of the first pixel driving circuit 3, which will not be described in detail.

[0078] In some embodiments, Figure 3As shown, the display substrate includes: an active layer 11, a gate insulating layer 12, a first conductive layer 13, a first insulating layer 14, a second conductive layer 15, a second insulating layer 16, a third conductive layer 17 and a fourth conductive layer 18 stacked in sequence on a base 1.

[0079] Among them, the active layer 11 includes: the active layer pattern and the source-drain doping region pattern of each transistor in the first pixel driving circuit 3; the first conductive layer 13 includes: the control electrode, the reset control signal line, the gate line, the first electrode plate of the storage capacitor and the light-emitting control signal line of each transistor in the first pixel driving circuit 3; the second conductive layer 15 includes: the reset voltage transmission line and the second electrode plate of the storage capacitor; the third conductive layer 17 includes: the first connecting part 170; the fourth conductive layer 18 includes: the data line, the first working voltage transmission line and the second connecting part 180.

[0080] like Figure 3 , Figure 4 As shown, the second electrode of the second light-emitting control transistor T6 is connected to the first electrode of the light-emitting element in the first light-emitting unit 2 through the first connecting part 170 and the second connecting part 180 in sequence, and the first electrode is connected to the first pixel driving circuit 3 through the transparent conductive wiring 4, that is, the second electrode of the second light-emitting control transistor T6 is electrically connected to the transparent conductive wiring 4 through the first connecting part 170 and the second connecting part 180 in sequence.

[0081] In order to simplify the manufacturing process, in the embodiment of the present disclosure, the first connecting line 5 is arranged in the third conductive layer 17 and connected to the first connecting part 170 in the third conductive layer 17, and the first connecting part 170 is connected to the transparent conductive trace 4 through the second connecting part 180. Therefore, the first connecting line 5 is connected to the transparent conductive trace 4 through the first connecting part 170 and the second connecting part 180 in sequence.

[0082] Based on the same inventive concept, an embodiment of the present disclosure further provides a display panel, comprising the display substrate provided in any of the above embodiments, and an encapsulation layer and a touch layer located on the display substrate.

[0083] An embodiment of the present disclosure further provides a display device, comprising the above-mentioned display panel.

[0084] The above-mentioned display device can be: electronic paper, mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, navigator and any other product or component with display function. The other essential components of the display device should be understood by ordinary technicians in the field and will not be elaborated here, nor should they be used as limitations on the present invention.

[0085] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present disclosure, but the present disclosure is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and substance of the present disclosure, and these modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. A display substrate, characterized in that: The invention comprises: a substrate, wherein the substrate is divided into a display area and a peripheral area surrounding the display area, the display area comprises a light-transmitting display area and a first display area located around the light-transmitting display area, a plurality of first light-emitting units distributed in an array are arranged in the light-transmitting display area, and a plurality of first pixel driving circuits are arranged in the first display area; The display substrate further comprises: a plurality of transparent conductive traces connected to the first light-emitting units in a one-to-one correspondence, wherein a portion of the transparent conductive traces is located in the light-transmitting display area and is electrically connected to the corresponding first light-emitting unit, and another portion of the transparent conductive traces extends to the first display area and is electrically connected to the first pixel driving circuit corresponding to the first light-emitting unit; at least one first connection line, a portion of which is located in the first display area and electrically connected to the corresponding at least one transparent conductive trace, and another portion of which extends to the peripheral area; The number of the first connecting lines is multiple, and the display substrate further includes: at least one second connection line, the second connection line being located in the peripheral area, and the second connection line being electrically connected to corresponding at least two of the first connection lines; The display substrate further comprises: at least one first transistor, the first transistor being located in the peripheral region, the control electrode of the first transistor being electrically connected to a preset first pad, the first electrode of the first transistor being electrically connected to a preset second pad, and the second electrode of the first transistor being electrically connected to the corresponding at least one second connection line; The plurality of first light-emitting units located in the light-transmitting display area are divided into first light-emitting unit groups arranged along a first direction, and each first light-emitting unit group includes the first light-emitting units arranged along a second direction; wherein the first direction is an extension direction of the transparent conductive trace, and the second direction intersects with the first direction; The transparent conductive traces corresponding to the first light-emitting units in the first light-emitting unit groups arranged at intervals are all configured with the first connecting wires; The light-transmitting display area includes 2N first light-emitting unit groups arranged along the first direction, wherein: All the first connecting lines configured for the first light-emitting units located in the 1st to Nth first light-emitting unit groups and configured with the first connecting lines are electrically connected to the same second connecting line; All the first connection lines configured for the first light emitting units in the N+1th to 2Nth first light emitting unit groups and configured with the first connection lines are electrically connected to another second connection line, Wherein, N is a positive integer.

2. The display substrate according to claim 1, characterized in that: The transparent conductive traces corresponding to all first light-emitting units in the same first light-emitting unit group are connected to the same first connecting line.

3. The display substrate according to claim 1, characterized in that: The number of the first transistors is two, wherein, Each of the first transistors is connected to one of the second connection lines, and different first transistors are connected to different second connection lines.

4. The display substrate according to claim 1, characterized in that: The display substrate comprises: An active layer, a gate insulating layer, a first conductive layer, a first insulating layer, a second conductive layer, a second insulating layer, a third conductive layer and a fourth conductive layer are sequentially stacked on the substrate, wherein: The active layer includes: active layer patterns and source-drain doping region patterns of each transistor in the first pixel driving circuit; The first conductive layer includes: control electrodes of each transistor in the first pixel driving circuit, a reset control signal line, a gate line, a first electrode plate of a storage capacitor and a light emitting control signal line; The second conductive layer includes: a reset voltage transmission line and a second plate of the storage capacitor; The third conductive layer includes: a first connecting portion; The fourth conductive layer includes: a data line, a first operating voltage transmission line and a second connecting portion; The second electrode of the second light emitting control transistor is connected to the transparent conductive trace through the first connecting portion and the second connecting portion in sequence; The first connecting line is located in the third conductive layer and is electrically connected to the first connecting portion.

5. A display panel, characterized in that: It comprises the display substrate according to any one of claims 1 to 4, and a packaging layer and a touch layer located on the display substrate.

6. A display device, characterized in that: Comprising the display panel as claimed in claim 5.

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