Display module, display substrate and driving method thereof

Abstract

The present disclosure provides a display module, a display substrate and a driving method thereof. The display substrate includes: a substrate; a light-emitting structure, including a first light-emitting element and at least one second light-emitting element; a pixel circuit, including a first driving subcircuit, at least one second driving subcircuit and a data writing subcircuit, wherein the second driving subcircuit corresponds to the second light-emitting element; the data writing subcircuit is used to control the control node to be electrically connected to the data signal terminal under the control of the potential of the scanning signal terminal; the first driving subcircuit is used to control the first electrode of the first light-emitting element to be electrically connected to the power signal terminal under the control of the potential of the control node; the second driving subcircuit is used to control the first electrode of the first light-emitting element to be electrically connected to the first electrode of the corresponding second light-emitting element under the control of the potential of the control signal terminal. The present disclosure broadens the application scope of the display substrate.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display module, a display substrate and a driving method thereof. Background Art

[0002] With the development of technology, display panels have attracted more and more attention. However, some existing display panels have a relatively small application range. Summary of the invention

[0003] The purpose of the present disclosure is to provide a display module, a display substrate and a driving method thereof, which can broaden the application scope of the display substrate.

[0004] According to one aspect of the present disclosure, there is provided a display substrate, comprising:

[0005] substrate;

[0006] A light-emitting structure, comprising a first light-emitting element and at least one second light-emitting element, wherein the first light-emitting element and the second light-emitting element are arranged on the substrate at intervals, and the first light-emitting element and the second light-emitting element comprise a first electrode and a second electrode arranged opposite to each other;

[0007] a pixel circuit, disposed on one side of the light-emitting structure, and comprising a first driving subcircuit, at least one second driving subcircuit and a data writing subcircuit, wherein the second driving subcircuit corresponds to the second light-emitting element;

[0008] The data writing sub-circuit is electrically connected to the data signal terminal, the control node and the scan signal terminal, and is used to control the control node to be electrically connected to the data signal terminal under the control of the potential of the scan signal terminal;

[0009] The first driving subcircuit is electrically connected to the power signal terminal, the first electrode of the first light-emitting element and the control node, and is used to control the first electrode of the first light-emitting element to be electrically connected to the power signal terminal under the control of the potential of the control node;

[0010] The second driving subcircuit is electrically connected to the first electrode of the first light-emitting element, the first electrode of the second light-emitting element correspondingly, and a control signal terminal, and is used to control the first electrode of the first light-emitting element to be electrically connected to the first electrode of the second light-emitting element correspondingly under the control of the potential of the control signal terminal.

[0011] Furthermore, the display substrate includes a plurality of pixel areas, one of the pixel areas includes a plurality of sub-pixel areas, the light-emitting structure includes a plurality of light-emitting units, the plurality of light-emitting units are correspondingly arranged in the plurality of sub-pixel areas, at least one of the light-emitting units includes the first light-emitting element and at least one of the second light-emitting elements, and the first light-emitting element and the second light-emitting element located in one of the sub-pixel areas have the same light-emitting color.

[0012] Furthermore, the first light-emitting element and the second light-emitting element include a light-emitting layer located between the first electrode and the second electrode, the pixel circuit includes a metal layer, and the orthographic projection of the light-emitting layer of the second light-emitting element on the substrate is spaced apart from or partially overlaps with the orthographic projection of the metal layer of the pixel circuit on the substrate.

[0013] Furthermore, the display substrate further comprises:

[0014] The reflective structure is arranged on one side of the light-emitting structure, and the orthographic projection of the light-emitting layer of the first light-emitting element on the substrate is located within the orthographic projection area of ​​the reflective structure on the substrate.

[0015] Furthermore, the reflective structure is a conductor, and the reflective structure is provided between the light-emitting structure and the pixel circuit, and the first electrode of the first light-emitting element is electrically connected to the first driving subcircuit through the reflective structure.

[0016] Furthermore, the display substrate further comprises:

[0017] The shading structure is arranged on a side of the reflective structure facing away from the light-emitting structure, and the orthographic projection of the light-emitting layer of the first light-emitting element on the substrate is located within the orthographic projection area of ​​the shading structure on the substrate.

[0018] Furthermore, the first driving sub-circuit includes:

[0019] A first driving transistor, wherein a first electrode of the first driving transistor is connected to the power signal terminal, a second electrode of the first driving transistor is connected to the first electrode of the first light-emitting element, and a control electrode of the first driving transistor is connected to the control node;

[0020] The second driving sub-circuit comprises:

[0021] A second driving transistor, wherein a first electrode of the second driving transistor is connected to the first electrode of the first light-emitting element, a second electrode of the second driving transistor is connected to the first electrode of the second light-emitting element, and a control electrode of the second driving transistor is connected to the control signal terminal.

[0022] Furthermore, the control electrode of the first driving transistor and the control electrode of the second driving transistor are arranged on the same layer; and / or

[0023] The first electrode of the first driving transistor, the second electrode of the first driving transistor, the first electrode of the second driving transistor, and the second electrode of the second driving transistor are arranged in the same layer.

[0024] According to one aspect of the present disclosure, a display module is provided, comprising the display substrate.

[0025] According to one aspect of the present disclosure, a method for driving a display substrate is provided. The method for driving a display substrate adopts the display substrate, and the method for driving a display substrate comprises:

[0026] The data writing subcircuit controls the control node to be electrically connected to the data signal terminal under the control of the potential of the scanning signal terminal;

[0027] The first driving subcircuit controls the first electrode of the first light-emitting element to be electrically connected to the power signal terminal under the control of the potential of the control node;

[0028] The second driving subcircuit controls the first electrode of the first light-emitting element to be electrically connected to the first electrode of the second light-emitting element correspondingly under the control of the potential of the control signal terminal.

[0029] The display module, display substrate and driving method disclosed in the present invention, during use, make the data writing subcircuit control the control node to be electrically connected to the data signal terminal under the control of the potential of the scanning signal terminal, make the first driving subcircuit control the first electrode of the first light-emitting element to be electrically connected to the power signal terminal under the control of the potential of the control node, so that the first light-emitting element can display; during the display of the first light-emitting element, the present invention can control the first electrode of the first light-emitting element to be electrically connected or disconnected with the first electrode of the second light-emitting element through the second driving subcircuit, so as to control the second light-emitting element to display or control the second light-emitting element not to display, that is, the present invention can control the first light-emitting element and the second light-emitting element to display at the same time or control the first light-emitting element to display, thereby broadening the application scope of the display substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of a touch panel according to an embodiment of the present disclosure.

[0031] Figure 2 Schematic diagram of a touch panel having a first light absorption film in an embodiment of the present disclosure.

[0032] Figure 3 Schematic diagram of a touch panel with a color film in an embodiment of the present disclosure.

[0033] Figure 4 is a schematic diagram of a touch panel having a transparent conductor layer in an embodiment of the present disclosure.

[0034] Figure 5 and Figure 6 is a schematic diagram of a touch panel with a buffer layer in an embodiment of the present disclosure.

[0035] Figure 7 and Figure 8 is a schematic diagram of a touch panel having a first metal layer in an embodiment of the present disclosure.

[0036] Explanation of the reference numerals: 1. substrate; 2. gate insulating layer; 3. interlayer insulating layer; 4. control electrode; 5. first electrode; 6. second electrode; 7. active layer; 8. first electrode; 9. light-emitting layer; 10. second electrode; 11. planarization layer; 12. isolation structure; 13. reflective structure; 14. shading structure; 15. first driving subcircuit; 16. second driving subcircuit; 17. data writing subcircuit; 18. energy storage subcircuit; 19. buffer layer; 20. metal layer; 100. pixel area; 101. sub-pixel area; 1011. first light-emitting area; 1012. second light-emitting area; 200. transparent area; T1. first driving transistor; T2. second driving transistor; T3. data writing transistor; C1. energy storage capacitor; L1. first light-emitting element; L2. second light-emitting element; N1. control node. DETAILED DESCRIPTION

[0037] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices consistent with some aspects of the present disclosure as detailed in the appended claims.

[0038] The terms used in the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The words "first", "second" and similar words used in the present disclosure specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantity limit, but indicate that there is at least one. "Multiple" or "several" means two and more than two. Unless otherwise specified, words such as "front", "rear", "lower" and / or "upper" are only for the convenience of explanation and are not limited to one position or one spatial orientation. Words such as "include" or "comprise" mean that the elements or objects appearing in front of "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0039] The present disclosure provides a display substrate. Figure 1 and Figure 4 As shown, the display substrate may include a substrate 1, a light emitting structure and a pixel circuit, wherein:

[0040] The light-emitting structure includes a first light-emitting element L1 and at least one second light-emitting element L2. The first light-emitting element L1 and the second light-emitting element L2 are arranged on a substrate 1 at intervals. The first light-emitting element L1 and the second light-emitting element L2 include a first electrode 8 and a second electrode 10 arranged opposite to each other. The pixel circuit can be arranged on one side of the light-emitting structure. The pixel circuit can include a first driving subcircuit 15, at least one second driving subcircuit 16 and a data writing subcircuit 17. The second driving subcircuit 16 corresponds to the second light-emitting element L2. The data writing subcircuit 17 is electrically connected to the data signal terminal DATA, the control node N1 and the scan signal terminal G1, and is used to control the control node N1 to be electrically connected to the data signal terminal DATA under the control of the potential of the scan signal terminal G1. The first driving subcircuit 15 is electrically connected to the power signal terminal VDD, the first electrode 8 of the first light-emitting element L1 and the control node N1, and is used to control the first electrode 8 of the first light-emitting element L1 to be electrically connected to the power signal terminal VDD under the control of the potential of the control node N1. The second driving subcircuit 16 is electrically connected to the first electrode 8 of the first light-emitting element L1, the first electrode 8 of the corresponding second light-emitting element L2, and the control signal terminal G2, and is used to control the first electrode 8 of the first light-emitting element L1 to be electrically connected to the first electrode 8 of the corresponding second light-emitting element L2 under the control of the potential of the control signal terminal G2.

[0041] The display substrate of the embodiment of the present disclosure, during use, makes the data writing subcircuit 17 control the control node N1 to be electrically connected to the data signal terminal DATA under the control of the potential of the scanning signal terminal G1, and makes the first driving subcircuit 15 control the first electrode 8 of the first light-emitting element L1 to be electrically connected to the power signal terminal VDD under the control of the potential of the control node N1, so that the first light-emitting element L1 is displayed; during the display of the first light-emitting element L1, the present disclosure can control the first electrode 8 of the first light-emitting element L1 to be electrically connected or disconnected with the first electrode 8 of the second light-emitting element L2 through the second driving subcircuit 16, so that the second light-emitting element L2 can be controlled to display or not display, that is, the present disclosure can control the first light-emitting element L1 and the second light-emitting element L2 to display at the same time or control the first light-emitting element L1 to display, thereby broadening the application scope of the display substrate.

[0042] The display substrate of the embodiment of the present disclosure is described in detail below:

[0043] The substrate 1 may be a light-transmitting substrate, such as a glass substrate, a transparent plastic substrate, etc. The material of the transparent plastic substrate may include PI, PET, PE, etc.

[0044] like Figure 2 and Figure 3As shown, the display substrate may include a plurality of pixel regions 100. The plurality of pixel regions 100 may be arranged in an array. A transparent region 200 may be provided between adjacent pixel regions 100. In one embodiment, a transparent region 200 may be provided between adjacent pixel regions 100 in the direction of pixel rows. The transparent region 200 means that all film layers of the display substrate arranged in the transparent region 200 are transparent film layers. A pixel region 100 may include a plurality of sub-pixel regions 101. The plurality of sub-image regions in a pixel region 100 may be sequentially distributed along the direction of pixel columns or pixel rows. Each sub-pixel region 101 may include a first light-emitting region 1011 and at least one second light-emitting region 1012. The first light-emitting region 1011 and the second light-emitting region 1012 are distributed in the direction of pixel rows or pixel columns.

[0045] The light-emitting structure includes a first light-emitting element L1 and a second light-emitting element L2. The light-emitting structure may include a plurality of light-emitting units. The plurality of light-emitting units correspond to the plurality of sub-pixel regions 101 one-to-one, and the plurality of light-emitting units are arranged in the plurality of sub-pixel regions 101 in a one-to-one correspondence. Each light-emitting unit may include a first light-emitting element L1 and at least one second light-emitting element L2. The first light-emitting element L1 may be arranged in the first light-emitting region 1011, and the second light-emitting element L2 may be arranged in the second light-emitting region 1012. Taking the number of the second light-emitting elements L2 as an example, the plurality of second light-emitting elements L2 are arranged in the plurality of second light-emitting regions 1012 in a one-to-one correspondence. For example, in a sub-pixel region 101, the number of the second light-emitting regions 1012 and the number of the second light-emitting elements L2 are both two, and the first light-emitting region 1011 may be arranged between the two second light-emitting regions 1012. The light-emitting colors of the first light-emitting element L1 and the second light-emitting element L2 arranged in a sub-pixel region 101 may be the same.

[0046] like Figure 4 and Figure 5 As shown, the first light-emitting element L1 and the second light-emitting element L2 may include a first electrode 8 and a second electrode 10 arranged opposite to each other, and of course, may also include a light-emitting layer 9 located between the first electrode 8 and the second electrode 10. The light-emitting layer 9 may be an organic electroluminescent layer 9, and of course, may also be a quantum dot layer, but the present disclosure does not specifically limit this. The first electrode 8 may be disposed on the side of the second electrode 10 facing the substrate 1. One of the first electrode 8 and the second electrode 10 may be an anode, and the other may be a cathode. For example, the first electrode 8 is an anode, and the second electrode 10 is a cathode. The first electrode 8 of the first light-emitting element L1 is disposed in the same layer as the first electrode 8 of the second light-emitting element L2, the light-emitting layer 9 of the first light-emitting element L1 is disposed in the same layer as the light-emitting layer 9 of the second light-emitting element L2, and the second pole 6 of the first light-emitting element L1 is disposed in the same layer as the second pole 6 of the second light-emitting element L2.

[0047] The pixel circuit may be located on one side of the light emitting structure. The pixel circuit may be located on the side of the light emitting structure facing the substrate 1. For example, the light emitting structure includes a plurality of light emitting units, and the number of the pixel circuits is also a plurality, and the plurality of pixel circuits are electrically connected to the plurality of light emitting units in a one-to-one correspondence. Figure 1 As shown, the pixel circuit may include a first driving subcircuit 15, at least one second driving subcircuit 16 and a data writing subcircuit 17. The data writing subcircuit 17 is electrically connected to the data signal terminal DATA, the control node N1 and the scanning signal terminal G1, and is used to control the control node N1 to be electrically connected to the data signal terminal DATA under the control of the potential of the scanning signal terminal G1. For example, the first electrode 5 of the data writing transistor T3 is connected to the data signal terminal DATA, the second electrode 6 of the data writing transistor T3 is connected to the control node N1, and the control electrode 4 of the data writing transistor T3 is connected to the scanning signal terminal G1.

[0048] The first driving subcircuit 15 is electrically connected to the power signal terminal VDD, the first electrode 8 of the first light emitting element L1 and the control node N1, and is used to control the first electrode 8 of the first light emitting element L1 to be electrically connected to the power signal terminal VDD under the control of the potential of the control node N1. For example, the first driving subcircuit 15 may include a first driving transistor T1. The first electrode 5 of the first driving transistor T1 may be connected to the power signal terminal VDD, and the second electrode 6 of the first driving transistor T1 may be connected to the first electrode 8 of the first light emitting element L1. The control electrode 4 of the first driving transistor T1 may be connected to the control node N1.

[0049] Taking the example that the number of the second driving subcircuit 16 and the second light-emitting element L2 are both multiple, the multiple second driving subcircuits 16 correspond to the multiple second light-emitting elements L2 one by one. The second driving subcircuit 16 is electrically connected to the first electrode 8 of the corresponding second light-emitting element L2, the first electrode 8 of the first light-emitting element L1, and the control signal terminal G2, and is used to control the first electrode 8 of the first light-emitting element L1 to be electrically connected to the first electrode 8 of the corresponding second light-emitting element L2 under the control of the potential of the control signal terminal G2. For example, the second driving subcircuit 16 may include a second driving transistor T2. The first electrode 5 of the second driving transistor T2 may be connected to the first electrode 8 of the first light-emitting element L1, the second electrode 6 of the second driving transistor T2 is connected to the first electrode 8 of the second light-emitting element L2, and the control electrode 4 of the second driving transistor T2 is connected to the control signal terminal G2.

[0050] The data writing transistor T3, the first driving transistor T1 and the second driving transistor T2 can all be thin film transistors. The thin film transistor can be an amorphous silicon (a-Si) thin film transistor, a low temperature polycrystalline silicon (LTPS) thin film transistor or an oxide thin film transistor. The control electrode 4 can be a gate, and one of the first electrode 5 and the second electrode 6 can be a source electrode and the other can be a drain electrode. Figure 4 As shown, the control electrode 4 of the first driving transistor T1 can be arranged in the same layer as the control electrode 4 of the second driving transistor T2. The first electrode 5 of the first driving transistor T1, the second electrode 6 of the first driving transistor T1, the first electrode 5 of the second driving transistor T2 and the second electrode 6 of the second driving transistor T2 are arranged in the same layer. The control electrode 4 of the data writing transistor T3 can be arranged in the same layer as the control electrode 4 of the first driving transistor T1, and the first electrode 5 and the second electrode 6 of the data writing transistor T3 can also be arranged in the same layer as the first electrode 5 of the first driving transistor T1.

[0051] In addition, if Figure 1 As shown, the pixel circuit may further include an energy storage subcircuit 18. The energy storage subcircuit 18 is connected between the control node N1 and the first electrode 8 of the first light-emitting element L1. Specifically, the energy storage subcircuit 18 may include an energy storage capacitor C1. The first plate of the energy storage capacitor C1 is connected to the control node N1. The second plate of the energy storage capacitor C1 is connected to the first electrode 8 of the first light-emitting element L1.

[0052] Specifically, Figure 5As shown, the pixel circuit may include a metal layer 20. The metal layer 20 may include a gate layer and a source-drain electrode layer. The control electrode 4 of the first drive transistor T1, the control electrode 4 of the second drive transistor T2, and the control electrode 4 of the data write transistor T3 are all located in the gate layer. The first electrode 5 and the second electrode 6 of the first drive transistor T1, the second drive transistor T2, and the data write transistor T3 are all located in the source-drain electrode layer. Among them, the metal layer 20 of the pixel circuit can be located in the first light-emitting area 1011, and the orthographic projection of the metal layer 20 on the substrate 1 can overlap with the orthographic projection of the light-emitting layer 9 of the first light-emitting element L1 on the substrate 1. The orthographic projection of the metal layer 20 on the substrate 1 can be arranged at intervals with the orthographic projection of the light-emitting layer 9 of the second light-emitting element L2 on the substrate 1. With such arrangement, the first light-emitting area 1011 in the sub-pixel area 101 can form a single-sided light-emitting area (the metal layer 20 will block the light emitted by the light-emitting layer 9 of the first light-emitting element L1), and the second light-emitting area 1012 can form a transparent light-emitting area or a double-sided light-emitting area (the metal layer 20 will not block the light emitted by the light-emitting layer 9 of the second light-emitting element L2). Since the present disclosure can control the first light-emitting element L1 and the second light-emitting element L2 to display at the same time or control the first light-emitting element L1 to display, the display substrate can not only realize double-sided light emission, but also single-sided light emission, thereby enhancing the utilization of the display substrate. In other embodiments of the present disclosure, the orthographic projection of the metal layer 20 on the substrate 1 may partially overlap with the orthographic projection of the light-emitting layer 9 of the second light-emitting element L2 on the substrate 1 .

[0053] like Figure 4 and Figure 5As shown, the pixel circuit may further include an active layer 7, a gate insulating layer 2 and an interlayer insulating layer 3. The active layer 7 may be disposed on the substrate 1. The gate insulating layer 2 may be disposed on the side of the active layer 7 facing away from the substrate 1. The gate layer of the metal layer 20 may be disposed on the side of the gate insulating layer 2 facing away from the substrate 1. The interlayer insulating layer 3 may be disposed on the side of the gate layer facing away from the substrate 1. The source and drain electrode layer of the metal layer 20 may be disposed on the side of the interlayer insulating layer 3 facing away from the substrate 1. Among them, multiple pixel circuits may share one gate insulating layer 2, and multiple pixel circuits may also share one interlayer insulating layer 3. The display substrate disclosed in the present invention may further include a planarization layer 11. The planarization layer 11 may be disposed on the side of the source and drain electrode layer facing away from the substrate 1. The first electrode 8 of the first light-emitting element L1 and the first electrode 8 of the second light-emitting element L2 may be disposed in the same layer and disposed on the side of the planarization layer 11 facing away from the substrate 1. The first electrode 8 of the first light-emitting element L1 is electrically connected to the second electrode 6 of the first driving transistor T1 via a via hole passing through the planarization layer 11. The first electrode 8 of the second light-emitting element L2 is electrically connected to the second electrode 6 of the second driving transistor T2 via a via hole passing through the planarization layer 11. In addition, the display substrate may further include an isolation structure 12. The isolation structure 12 may be disposed on the side of the planarization layer 11 facing away from the substrate 1, and may be provided with a plurality of pixel openings. The first electrodes 8 of the first light-emitting element L1 and the second light-emitting element L2 are disposed in the pixel openings. Among them, the isolation structure 12 may include a pixel defining layer. It should be noted that a first electrode 8 of a light-emitting element is disposed in a pixel opening. It should be noted that each film layer of the pixel circuit located in the second light-emitting area 1012 may be a transparent film layer.

[0054] like Figure 5As shown, the display substrate of the present disclosure may further include a reflective structure 13. The reflective structure 13 may be a reflective layer. The reflective structure 13 may be provided on one side of the light-emitting structure, for example, the reflective structure 13 may be provided on the side of the light-emitting structure facing the substrate 1. The reflective structure 13 may be provided in the above-mentioned first light-emitting area 1011. The number of the reflective structures 13 may be multiple, and the multiple reflective structures 13 may correspond to the multiple first light-emitting elements L1 one by one. The orthographic projection of the light-emitting layer 9 of the first light-emitting element L1 on the substrate 1 may be located in the orthographic projection area of ​​the corresponding reflective structure 13 on the substrate 1. Such an arrangement may improve the single-sided light extraction efficiency of the first light-emitting area 1011. The reflective structure 13 may be a conductor, such as metallic silver. The reflective structure 13 may be provided between the light-emitting structure and the pixel circuit, and the first electrode 8 of the first light-emitting element L1 is electrically connected to the first driving subcircuit 15 through the reflective structure 13, that is, the first electrode 8 of the first light-emitting element L1 is electrically connected to the second electrode 6 of the first driving transistor T1 through the reflective structure 13. Specifically, the reflective structure 13 can be arranged on the side of the planarization layer 11 facing away from the substrate 1, and be electrically connected to the second electrode 6 of the first driving transistor T1 via a via hole passing through the planarization layer 11; the first electrode 8 of the first light-emitting element L1 can be arranged on the surface of the reflective structure 13 facing away from the substrate 1 to be electrically connected to the reflective structure 13.

[0055] like Figure 5 As shown, the display substrate of the embodiment of the present disclosure may further include a shading structure 14. The shading structure 14 may be a shading layer. The shading structure 14 may be provided on the side of the reflective structure 13 facing away from the light-emitting structure. The shading structure 14 may be provided in the above-mentioned first light-emitting area 1011. Of course, the shading structure 14 may also extend out of the first light-emitting area 1011. The number of the shading structures 14 may be multiple, and the multiple shading structures 14 may correspond one-to-one to the multiple first light-emitting elements L1. The orthographic projection of the light-emitting layer 9 of the first light-emitting element L1 on the substrate 1 may be located within the orthographic projection area of ​​the shading structure 14 on the substrate 1. Among them, the display substrate may include a buffer layer 19. The shading structure 14 may be provided between the buffer layer 19 and the substrate 1. The above-mentioned active layer 7 may be provided on the side of the buffer layer 19 facing away from the substrate 1.

[0056] The present disclosure also provides a method for preparing a display substrate. The method may include: Figure 6 As shown, a first driving transistor T1 and a second driving transistor T2 are formed on a substrate 1; Figure 7 As shown, a first electrode 8 is formed; Figure 8 As shown, an isolation structure 12 is formed; Figure 4 As shown, a light emitting layer 9 and a second electrode 10 are formed.

[0057] The embodiment of the present disclosure also provides a display module. The display module may include a display substrate of any of the above embodiments. The display module may be a mobile phone, or of course, a tablet computer, a television, etc.

[0058] The embodiment of the present disclosure also provides a method for driving a display substrate. The method for driving a display substrate adopts a display substrate of any of the above embodiments. The driving method may include: controlling the data writing subcircuit 17 to electrically connect the control node N1 with the data signal terminal DATA under the control of the potential of the scanning signal terminal G1; controlling the first driving subcircuit 15 to electrically connect the first electrode 8 of the first light-emitting element L1 with the power signal terminal VDD under the control of the potential of the control node N1; and controlling the second driving subcircuit 16 to electrically connect the first electrode 8 of the first light-emitting element L1 with the corresponding first electrode 8 of the second light-emitting element L2 under the control of the potential of the control signal terminal G2.

[0059] The display substrate, the method for preparing the display substrate, the display module and the method for driving the display substrate provided in the embodiments of the present disclosure belong to the same inventive concept, and the descriptions of the relevant details and beneficial effects can be referred to each other and will not be repeated here.

[0060] The above is only a preferred implementation mode of the present disclosure, and does not limit the present disclosure in any form. Although the present disclosure has been disclosed as a preferred implementation mode as above, it is not used to limit the present disclosure. Any technician familiar with this profession can make some changes or modify the technical contents disclosed above into equivalent implementation modes without departing from the scope of the technical solution of the present disclosure. However, any simple modification, equivalent change and modification made to the above implementation modes based on the technical essence of the present disclosure without departing from the content of the technical solution of the present disclosure still fall within the scope of the technical solution of the present disclosure.

Claims

1. A display substrate, characterized in that: include: substrate; A light-emitting structure, comprising a first light-emitting element and at least one second light-emitting element, wherein the first light-emitting element and the second light-emitting element are arranged on the substrate at intervals, and the first light-emitting element and the second light-emitting element comprise a first electrode and a second electrode arranged opposite to each other; a pixel circuit, disposed on one side of the light-emitting structure, and comprising a first driving subcircuit, at least one second driving subcircuit and a data writing subcircuit, wherein the second driving subcircuit corresponds to the second light-emitting element; The data writing sub-circuit is electrically connected to the data signal terminal, the control node and the scan signal terminal, and is used to control the control node to be electrically connected to the data signal terminal under the control of the potential of the scan signal terminal; The first driving subcircuit is electrically connected to the power signal terminal, the first electrode of the first light-emitting element and the control node, and is used to control the first electrode of the first light-emitting element to be electrically connected to the power signal terminal under the control of the potential of the control node; The second driving subcircuit is electrically connected to the first electrode of the first light-emitting element, the first electrode of the second light-emitting element correspondingly, and a control signal terminal, and is used to control the first electrode of the first light-emitting element to be electrically connected to the first electrode of the second light-emitting element correspondingly under the control of the potential of the control signal terminal.

2. The display substrate according to claim 1, characterized in that: The display substrate includes a plurality of pixel areas, one of the pixel areas includes a plurality of sub-pixel areas, the light-emitting structure includes a plurality of light-emitting units, the plurality of light-emitting units are correspondingly arranged in the plurality of sub-pixel areas, at least one of the light-emitting units includes the first light-emitting element and at least one of the second light-emitting elements, and the first light-emitting element and the second light-emitting element located in one of the sub-pixel areas have the same light-emitting color.

3. The display substrate according to claim 2, characterized in that: The first light-emitting element and the second light-emitting element include a light-emitting layer located between the first electrode and the second electrode, the pixel circuit includes a metal layer, and the orthographic projection of the light-emitting layer of the second light-emitting element on the substrate is spaced apart from or partially overlaps with the orthographic projection of the metal layer of the pixel circuit on the substrate.

4. The display substrate according to claim 2 or 3, characterized in that: The display substrate further comprises: The reflective structure is arranged on one side of the light-emitting structure, and the orthographic projection of the light-emitting layer of the first light-emitting element on the substrate is located within the orthographic projection area of ​​the reflective structure on the substrate.

5. The display substrate according to claim 4, characterized in that: The reflective structure is a conductor, and is disposed between the light-emitting structure and the pixel circuit. The first electrode of the first light-emitting element is electrically connected to the first driving subcircuit through the reflective structure.

6. The display substrate according to claim 4, characterized in that: The display substrate further comprises: The shading structure is arranged on a side of the reflective structure facing away from the light-emitting structure, and the orthographic projection of the light-emitting layer of the first light-emitting element on the substrate is located within the orthographic projection area of ​​the shading structure on the substrate.

7. The display substrate according to claim 1, characterized in that: The first driving sub-circuit comprises: A first driving transistor, wherein a first electrode of the first driving transistor is connected to the power signal terminal, a second electrode of the first driving transistor is connected to the first electrode of the first light-emitting element, and a control electrode of the first driving transistor is connected to the control node; The second driving sub-circuit comprises: A second driving transistor, wherein a first electrode of the second driving transistor is connected to the first electrode of the first light-emitting element, a second electrode of the second driving transistor is connected to the first electrode of the second light-emitting element, and a control electrode of the second driving transistor is connected to the control signal terminal.

8. The display substrate according to claim 7, characterized in that: The control electrode of the first driving transistor and the control electrode of the second driving transistor are arranged in the same layer; and / or The first electrode of the first driving transistor, the second electrode of the first driving transistor, the first electrode of the second driving transistor, and the second electrode of the second driving transistor are arranged in the same layer.

9. A display module, characterized in that: The display substrate comprises the display substrate according to any one of claims 1 to 8.

10. A method for driving a display substrate, characterized in that: The driving method adopts the display substrate according to any one of claims 1 to 8, and the driving method comprises: The data writing subcircuit controls the control node to be electrically connected to the data signal terminal under the control of the potential of the scanning signal terminal; The first driving subcircuit controls the first electrode of the first light-emitting element to be electrically connected to the power signal terminal under the control of the potential of the control node; The second driving subcircuit controls the first electrode of the first light-emitting element to be electrically connected to the first electrode of the second light-emitting element correspondingly under the control of the potential of the control signal terminal.

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