Display substrate and display device

Abstract

The present disclosure provides a display substrate and a display device, the display substrate has a display area and a peripheral area, the peripheral area surrounds the display area, the display substrate comprises: a substrate substrate; at least one power line in the peripheral area, the power line is arranged on the substrate substrate; a plurality of switching electrodes in the peripheral area, the switching electrode is arranged on the side of the power line away from the substrate substrate, and is electrically connected with the power line; the switching electrode is located on one side of the display area; a plurality of light emitting devices in the display area, the light emitting device is arranged on the substrate substrate, and comprises a first electrode, the first electrode is electrically connected with the switching electrode; wherein the switching electrode comprises a plurality of electrode strips electrically connected, and the plurality of electrode strips are arranged along the extension direction of the corresponding edge of the display area.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and more specifically to a display substrate and a display device. Background Technology

[0002] Micro-OLEDs (Micro-Organic Light-Emitting Diodes) are microdisplays that have emerged in recent years, with silicon-based OLEDs being one type. Silicon-based OLEDs not only enable active pixel addressing but also allow for the fabrication of various functional circuits on silicon substrates, such as timing control (TCON) circuits and overcurrent protection (OCP) circuits, which helps reduce system size and achieve lightweight design. Silicon-based OLEDs are fabricated using mature Complementary Metal Oxide Semiconductor (CMOS) integrated circuit technology, offering advantages such as small size, high resolution (PPI), and high refresh rate, and are widely used in near-eye displays for virtual reality (VR) and augmented reality (AR). Summary of the Invention

[0003] This disclosure provides a display substrate having a display area and a peripheral area, the peripheral area surrounding the display area, the display substrate comprising:

[0004] Substrate;

[0005] At least one power line is located in the peripheral area, and the power line is disposed on the substrate.

[0006] Multiple transfer electrodes are located in the peripheral area, the transfer electrodes are disposed on the side of the power line away from the substrate and are electrically connected to the power line; the transfer electrodes are located on one side of the display area;

[0007] Multiple light-emitting devices are located in the display area. The light-emitting devices are disposed on the substrate and include a first electrode, which is electrically connected to the transfer electrode.

[0008] The adapter electrode includes multiple electrically connected electrode strips, which are arranged along the extension direction of the corresponding edge of the display area.

[0009] In some embodiments, the peripheral area includes a bonding area located on one side of the display area, the bonding area being used to bond a flexible circuit board;

[0010] The plurality of transfer electrodes includes at least one first transfer electrode, wherein the first transfer electrode is disposed between the display area and the bonding area, and / or on the side of the display area away from the bonding area;

[0011] The first adapter electrode includes multiple electrode strips: multiple first electrode strips electrically connected and multiple second electrode strips electrically connected. The multiple first electrode strips are located on one side of the multiple second electrode strips. The first electrode strips are curved structures protruding toward the second electrode strips, and the second electrode strips are curved structures protruding toward the first electrode strips.

[0012] In some embodiments, the first adapter electrode further includes at least one first connecting strip and at least one second connecting strip, wherein the plurality of first electrode strips are electrically connected through the first connecting strip and the plurality of second electrode strips are electrically connected through the second connecting strip.

[0013] In some embodiments, the middle portion of each of the first electrode strips is connected to the first connecting strip; the middle portion of each of the second electrode strips is connected to the second connecting strip.

[0014] In some embodiments, the first adapter electrode includes: a plurality of first connecting strips and a plurality of second connecting strips.

[0015] One end of each of the first electrode strips near the display area is connected to the first first connecting strip, the other end of each of the first electrode strips away from the display area is connected to the second first connecting strip, and the middle part of each first electrode strip is connected to the third first connecting strip.

[0016] One end of each of the second electrode strips near the display area is connected to the first second connecting strip, the other end of each of the second electrode strips away from the display area is connected to the second second connecting strip, and the middle of each second electrode strip is connected to the third second connecting strip.

[0017] In some embodiments, the first adapter electrode includes: a plurality of first connecting strips and a plurality of second connecting strips, wherein the ends of each pair of adjacent first electrode strips are connected by a first connecting strip, so that the plurality of first electrode strips and the plurality of first connecting strips form a bent structure; and the ends of each pair of adjacent second electrode strips are connected by a second connecting strip, so that the plurality of second electrode strips and the plurality of second connecting strips form a bent structure.

[0018] In some embodiments, the first connecting strip and the plurality of first electrode strips are an integral structure, and the second connecting strip and the plurality of second electrode strips are an integral structure.

[0019] In some embodiments, the first electrode strip includes a first sub-electrode and a second sub-electrode connected together, the extension directions of the first sub-electrode and the second sub-electrode intersecting to form a curved structure;

[0020] The second electrode strip includes a connected third sub-electrode and a fourth sub-electrode, the extension directions of which intersect to form a curved structure;

[0021] Among them, the edge of at least one of the first sub-electrode, the second sub-electrode, the third sub-electrode, and the fourth sub-electrode is a straight line.

[0022] In some embodiments, the first electrode strip includes a first sub-electrode and a second sub-electrode connected together, the extension directions of the first sub-electrode and the second sub-electrode intersecting to form a curved structure;

[0023] The second electrode strip includes a connected third sub-electrode and a fourth sub-electrode, the extension directions of which intersect to form a curved structure;

[0024] Among them, at least one of the first sub-electrode, the second sub-electrode, the third sub-electrode and the fourth sub-electrode has a broken edge.

[0025] In some embodiments, the first adapter electrode is a mirror-symmetric pattern about a reference axis that passes through the center of the display area and extends in a direction from the display area to the bonding area.

[0026] In some embodiments, the plurality of adapter electrodes includes two first adapter electrodes and two second adapter electrodes, the two first adapter electrodes being located between the display area and the bonding area, and on the side of the display area away from the bonding area, respectively; the two second adapter electrodes are connected to the two first adapter electrodes to form a ring structure surrounding the display area.

[0027] In some embodiments, the display substrate further includes:

[0028] An insulating layer is disposed between the layer containing the power line and the layer containing the adapter electrode, and a plurality of vias are provided on the insulating layer. A conductive post is disposed in each of the vias, one end of which is connected to the irregularly shaped cathode ring and the other end of which is connected to the power line.

[0029] In some embodiments, the light-emitting device further includes a second electrode located between the first electrode and the substrate, wherein the transition electrode and the second electrode are disposed on the same layer.

[0030] In some embodiments, the peripheral area includes a bonding area located on one side of the display area, wherein pads are provided in the bonding area;

[0031] The display substrate further includes a voltage converter integrated in the substrate, wherein the input terminal of the voltage converter is electrically connected to the pad, and the output terminal is electrically connected to at least a first position of the power line, wherein the distance between the first position and the two ends of the power line is a first distance and a second distance, respectively, and the ratio of the first distance to the second distance is between 1:3 and 3:1.

[0032] This disclosure also provides a display device, including the display substrate described in any of the above embodiments. Attached Figure Description

[0033] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0034] Figure 1A This is a top view of a display substrate provided in an embodiment of this disclosure.

[0035] Figure 1B for Figure 1A A plan view of the transfer electrode in the circuit.

[0036] Figure 2 This is a cross-sectional view of a display substrate provided in an embodiment of this disclosure.

[0037] Figure 3 This is a schematic diagram of the structure of a substrate and a flexible circuit board provided in an embodiment of this disclosure.

[0038] Figure 4 This is a flowchart illustrating the manufacturing of a power cord according to an embodiment of this disclosure.

[0039] Figure 5A This is a schematic diagram of the structure of a first transfer electrode provided in an embodiment of this disclosure.

[0040] Figure 5B This is a schematic diagram of another first adapter electrode provided in an embodiment of this disclosure.

[0041] Figure 5C This is a schematic diagram of another first transfer electrode provided in an embodiment of the present disclosure.

[0042] Figure 6A This is a schematic diagram of the structure of a first transfer electrode provided in an embodiment of this disclosure.

[0043] Figure 6BThis is a schematic diagram of another first adapter electrode provided in an embodiment of this disclosure.

[0044] Figure 6C This is a schematic diagram of another first transfer electrode provided in an embodiment of the present disclosure.

[0045] Figure 7 This is a schematic diagram of the structure of a first transfer electrode provided in an embodiment of this disclosure.

[0046] Figure 8 This is a schematic diagram of the structure of a first transfer electrode provided in an embodiment of this disclosure.

[0047] Figure 9 This is a cross-sectional view of another display substrate provided in an embodiment of this disclosure.

[0048] Figure 10 This is a cross-sectional view of another display substrate provided in an embodiment of this disclosure. Detailed Implementation

[0049] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0050] The technical or scientific terms used in the embodiments of this disclosure should have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0051] Figure 1A This is a top view of a display substrate provided in an embodiment of this disclosure. Figure 1B for Figure 1A A plan view of the transfer electrode in the circuit. Figure 2 This is a cross-sectional view of a display substrate provided in an embodiment of this disclosure, such as... Figures 1A to 2As shown, the display substrate has a display area AA and a peripheral area SA, with the peripheral area SA surrounding the display area AA. The display substrate includes: a substrate 5, at least one power line 2 located in the peripheral area SA, multiple transition electrodes 1 located in the peripheral area SA, and multiple light-emitting devices 6 located in the display area AA. The substrate 5 can be a glass substrate or a substrate made of a flexible material, or it can be a silicon substrate. The power line 2 is disposed on the substrate 5, and the transition electrodes 1 are disposed on the side of the power line 2 away from the substrate 5 and are electrically connected to the power line 2. Each transition electrode 1 is located on one side of the display area AA. For example, the multiple transition electrodes 1 in the peripheral area SA can be connected to form a ring structure surrounding the display area AA.

[0052] like Figure 1A and Figure 2 As shown, the light-emitting device 6 is disposed on the substrate 5 and includes a first electrode 603. It may also include a second electrode 601 and a light-emitting functional layer 602. The second electrode 601, the light-emitting functional layer 602, and the first electrode 603 are arranged sequentially along a direction away from the substrate 5. The first electrode 603 can be a cathode, and the second electrode 601 can be an anode. Multiple cathodes of the light-emitting devices 6 can be connected into a single structure. The first electrode 603 can be a transmission electrode, and the second electrode 601 can be a reflection electrode. For example, the first electrode 603 can be made of a transparent conductive material such as indium tin oxide, or a thin metal material, such as one or more alloys of Mg / Ag.

[0053] The light-emitting functional layer 602 may include a light-emitting layer. The light-emitting layer may include small-molecule organic materials or polymeric organic materials, and may be a fluorescent or phosphorescent material, emitting red, green, blue, or white light. Further, as needed, the light-emitting functional layer 602 may also include a hole injection layer, a hole transport layer, an electron injection layer, an electron transport layer, etc.

[0054] The first electrode 603 is electrically connected to the transfer electrode 1, thereby being electrically connected to the power line 2 through the transfer electrode 1. The first electrodes 603 of the multiple light-emitting devices 6 can be connected to form a single first electrode layer, extending from the display area AA to the peripheral area SA, and electrically connected to the transfer electrode 1 through a via 9 on the insulating layer 8.

[0055] By using multiple transfer electrodes 1, the connection resistance between the first electrode 603 and the power line 2 can be reduced, thereby achieving greater current withstand capability and improving the voltage uniformity at various locations on the first electrode layer.

[0056] Furthermore, in this embodiment, the transition electrode 1 includes multiple electrically connected electrode strips 101a, which are arranged along the extension direction of the corresponding edges of the display area AA. Since the transition electrode 1 is made of a single piece of metal, the film thickness at various locations on the electrode strips 101a is more uniform, resulting in a substantially consistent impedance value at each location on the electrode strips 101a, thereby improving the voltage uniformity at various locations on the first electrode layer.

[0057] Figure 3 This is a schematic diagram of the structure of a substrate and a flexible circuit board provided in an embodiment of this disclosure, as shown below. Figure 1A and Figure 3 As shown in this embodiment, the peripheral area SA includes a bonding area 10 located on one side of the display area AA. The bonding area 10 is used to bond the flexible circuit board 13. The bonding area 10 is provided with a plurality of bonding electrodes 10p, which are used to bond and connect with electrodes on the flexible circuit board 13.

[0058] The plurality of transfer electrodes 1 include at least one first transfer electrode 101, wherein the first transfer electrode 101 is disposed between the display area AA and the bonding area 10, and / or on the side of the display area away from the bonding area 10. For example, Figure 1A As shown, a first adapter electrode 101 is provided between the display area AA and the binding area 10, on the side of the display area away from the binding area 10, and on the side of the display area AA and the binding area 10 or on the side of the display area away from the binding area 10.

[0059] Figure 4 This is a schematic diagram of the area division of a display substrate provided in an embodiment of this disclosure, such as... Figure 4 As shown, in one example, the display substrate is relatively large, for example, the diagonal length of the display area is 1.7 inches. In this case, the pattern on the display substrate can be made by splicing two masks together in the patterning process.

[0060] For example, multiple adapter electrodes 1 can be formed by splicing two masks together. Figure 4 As shown, the adapter electrode 1 on the left side of the dashed line can correspond to one mask, and the adapter electrode 1 on the right side of the dashed line can correspond to another mask.

[0061] Figures 5A to 8 These are schematic diagrams illustrating various structures of the first transfer electrode provided in the embodiments of this disclosure, such as... Figures 5A to 8As shown, the plurality of electrode strips 101a in the first adapter electrode 101 include: a plurality of first electrode strips 1010 electrically connected and a plurality of second electrode strips 1011 electrically connected. The plurality of first electrode strips 1010 are located on one side of the plurality of second electrode strips 1011. The first electrode strips 1010 are curved structures protruding toward the second electrode strips 1011, and the second electrode strips 1011 are curved structures protruding toward the first electrode strips 1010.

[0062] Among them, multiple first electrode strips 1010 can be located in Figure 4 In the area to the left of the dashed line, multiple second electrode strips 1011 can be located Figure 4 In the area to the right of the dashed line, when fabricating multiple transition electrodes 1, the multiple first electrode strips 1010 of the multiple first transition electrodes 101 can be fabricated using the same mask; similarly, the multiple second electrode strips 1011 of the multiple second transition electrodes 102 can be fabricated using the same mask. Setting the first electrode strip 1010 as a curved structure protruding towards the second electrode strip 1011, and setting the second electrode strip 1011 as a curved structure protruding towards the first electrode strip 1010, facilitates a stable connection between adjacent first electrode strips 1010 and second electrode strips 1011.

[0063] like Figures 5A to 8 As shown, in some embodiments, the first adapter electrode 101 further includes at least one first connecting strip 1012 and at least one second connecting strip 1013. Multiple first electrode strips 1010 are electrically connected via the first connecting strip 1012, and multiple second electrode strips 1011 are electrically connected via the second connecting strip 1013. The first connecting strip 1012 and the second connecting strip 1013 may both be parallel to the edge of the display area AA adjacent to the first adapter electrode 101.

[0064] like Figures 5A to 5C As shown, in some embodiments, the middle portion of each first electrode strip 1010 is connected to a first connecting strip 1012; the middle portion of each second electrode strip 1011 is connected to a second connecting strip 1013. The first connecting strip 1012 and the second connecting strip 1013 can contact each other.

[0065] like Figures 6A to 6C As shown, in some other embodiments, the first adapter electrode 101 includes: a plurality of first connecting strips 1012 and a plurality of second connecting strips 1013, wherein the end of each first electrode strip 1010 near the display area is connected to the first first connecting strip 1012, the end of each first electrode strip 1010 away from the display area AA is connected to the second first connecting strip 1012, and the middle part of each first electrode strip 1010 is connected to the third first connecting strip 1012.

[0066] The end of each second electrode strip 1011 closest to the display area AA is connected to the first second connecting strip 1013, the end of each second electrode strip 1011 furthest from the display area AA is connected to the second second connecting strip 1013, and the middle part of each second electrode strip 1011 is connected to the third second connecting strip 1013.

[0067] In addition, Figures 6A to 6C In each of the structures shown, the first connecting strip 1012 can be connected to the second connecting strip 1013 in a one-to-one correspondence.

[0068] like Figure 7 As shown, in some embodiments, the first adapter electrode 101 includes: a plurality of first connecting strips 1012 and a plurality of second connecting strips 1013. The ends of every two adjacent first electrode strips 1010 are connected by a first connecting strip 1012, so that the plurality of first electrode strips 1010 and the plurality of first connecting strips 1012 form a bent structure. The ends of every two adjacent second electrode strips 1011 are connected by a second connecting strip 1013, so that the plurality of second electrode strips 1011 and the plurality of second connecting strips 1013 form a bent structure. Specifically, the bent structure can be serpentine.

[0069] like Figure 8 As shown, in some embodiments, the first adapter electrode 101 includes: a plurality of first electrode strips 1010 and a plurality of second electrode strips 1011, as well as a plurality of first connecting strips 1012 and a plurality of second connecting strips 1013. The plurality of first electrode strips 1010 are electrically connected via first connecting strips 1012, and the plurality of second electrode strips 1011 are electrically connected via second connecting strips 1013. Furthermore, the middle portion of each first electrode strip 1010 can be connected to one first connecting strip 1012, and the middle portion of each second electrode strip 1011 can be connected to one second connecting strip 1013. Further, the two ends of the first electrode strip 1010 closest to a second electrode strip 1011 can be connected to two first connecting strips 1012, and the two ends of the second connecting strip 1013 closest to a first electrode strip 1010 can be connected to two second connecting strips 1013.

[0070] exist Figures 5A to 8 In the various structures of the first adapter electrode 101 given in the embodiments, the first connecting strip 1012 and multiple first electrode strips 1010 are integrated into one structure, and the second connecting strip 1013 and multiple second electrode strips 1011 are integrated into one structure, which helps to simplify the manufacturing process.

[0071] In some embodiments, such as Figure 5A and Figure 5BAs shown, the first electrode strip 1010 includes a connected first sub-electrode 1010a and a second sub-electrode 1010b, and the extending directions of the first sub-electrode 1010a and the second sub-electrode 1010b intersect to form a curved structure. The second electrode strip 1011 includes a connected third sub-electrode 1011a and a fourth sub-electrode 1011b, and the extending directions of the third sub-electrode 1011a and the fourth sub-electrode 1011b intersect to form a curved structure. Wherein, as... Figure 5A As shown, the edge of at least one of the first sub-electrode 1010a, the second sub-electrode 1010b, the third sub-electrode 1011a, and the fourth sub-electrode 1011b is a straight line.

[0072] In some embodiments, such as Figure 5B , Figure 5C , Figure 6B , Figure 6C , Figure 7 ,as well as Figure 8 As shown, the first electrode strip 1010 includes a first sub-electrode 1010a and a second sub-electrode 1010b connected together, and the extending directions of the first sub-electrode 1010a and the second sub-electrode 1010b intersect to form a curved structure. The second electrode strip 1011 includes a third sub-electrode 1011a and a fourth sub-electrode 1011b connected together, and the extending directions of the third sub-electrode 1011a and the fourth sub-electrode 1011b intersect to form a curved structure. At least one of the first sub-electrode 1010a, the second sub-electrode 1010b, the third sub-electrode 1011a, and the fourth sub-electrode 1011b has a zigzag edge.

[0073] Among them, Figure 5B , Figure 5C , Figure 6B , Figure 6C , Figure 7 ,as well as Figure 8 In this design, the first sub-electrode 1010a and the second sub-electrode 1010b can be viewed as a combination of multiple hexagonal structures. Of course, in other examples, the first sub-electrode 1010a and the second sub-electrode 1010b can also be a combination of pentagonal, octagonal, circular, or other structures. This design is beneficial for manufacturing processes and improves the uniformity of the fabrication.

[0074] In this embodiment of the disclosure, the first adapter electrode 101 is a mirror-symmetric pattern about a reference axis, and the reference axis passes through the center of the display area AA and extends in the direction from the display area AA to the bonding area.

[0075] The first adapter electrode 101 is a mirror-symmetric figure about the reference axis, which is beneficial for the first adapter electrode 101 to be made and spliced ​​by two masks.

[0076] In addition, the display substrate also includes a first alignment mark M1 and a second alignment mark M2. The first alignment mark M1 is disposed in the same layer as the first electrode strip 1010 and is made of the same material, that is, the two are manufactured by the same patterning process. The second alignment mark M2 is disposed in the same layer as the second electrode strip 1011 and is made of the same material, that is, the two are manufactured by the same patterning process. The first alignment mark M1 and the second alignment mark M2 are arranged along the direction from the display area AA to the bonding area 10.

[0077] The first alignment mark M1 and the second alignment mark M2 are used to align the two masks during the fabrication of the adapter electrode 1. Specifically, one mask can be used to form multiple first electrode strips 1010 and the first alignment mark M1. Then, another mask can be used to form multiple second electrode strips 1011 and the second alignment mark M2. When forming the second electrode strip 1011, the mask pattern corresponding to the second alignment mark M2 on the mask is aligned with the first alignment mark M1, thereby ensuring that the fabricated second electrode strip 1011 is electrically connected to the first electrode strip 1010.

[0078] The orthographic projections of the first alignment mark M1 and the second alignment mark M2 onto the substrate 5 can be cross-shaped, rectangular, trapezoidal, or other arbitrary regular or irregular shapes. In this embodiment, the orthographic projections of the alignment marks onto the substrate 5 are illustrated as cross-shaped.

[0079] Figure 9 This is a top view of another display substrate provided in an embodiment of this disclosure, such as... Figure 9 As shown, in some embodiments, the plurality of transfer electrodes 1 include two first transfer electrodes 101 and two second transfer electrodes 102. The two first transfer electrodes 101 are respectively located between the display area AA and the bonding area, and on the side of the display area AA away from the bonding area. The two second transfer electrodes 102 are connected to the two first transfer electrodes 101 to form a ring structure surrounding the display area AA.

[0080] This setup method is compared to Figure 1A In this embodiment, only the first transfer electrode 101 is provided, so that the first electrode layer can be loaded with voltage from all sides, thereby further improving the display uniformity of the display substrate.

[0081] The second adapter electrode 102 may also include multiple electrode strips 101a, which may be straight or bent. For example, the electrode strips 101a may be straight, and their extension direction may intersect with the overall extension direction of the second adapter electrode 102, for example, they may be perpendicular. Additionally, the second adapter electrode 102 may also include connecting strips for connecting the multiple electrode strips 101a in the second adapter electrode 102.

[0082] In some embodiments, such as Figure 2 As shown, the display substrate also includes an insulating layer 3, wherein the insulating layer 3 is disposed between the layer where the power line 2 is located and the layer where the adapter electrode 1 is located, and a plurality of vias 4 are provided on the insulating layer 3. Conductive pillars 40 are provided in the vias 4, one end of the conductive pillar 40 is connected to the adapter electrode 1, and the other end is connected to the power line 2, thereby electrically connecting the adapter electrode 1 and the power line 2.

[0083] The conductive pillar 40 can be made of metal material. After the conductive pillar 40 is formed by filling the via 4, it can also be polished. The polishing process etches and rubs the surfaces of the insulating layer 3 and the conductive pillar 40 to remove part of the thickness of the insulating layer 3 and the conductive pillar 40, so that the insulating layer 3 and the conductive pillar 40 form a flush surface.

[0084] Each of the first electrode strip 1010, the second electrode strip 1011, the first connecting strip 1012, and the second connecting strip 1013 can be connected to the power line 2 through multiple conductive posts 40, thereby improving the connection stability between the adapter electrode 1 and the power line 2 and reducing the overall resistance of the adapter electrode 1 and the power line 2.

[0085] In some embodiments, the conductive post 40 is made of tungsten metal. In some possible implementations, the conductive post 40 may be made of tungsten (W), and the via filled with tungsten metal is called a tungsten via (W-via). When the insulating layer 3 is thick, using tungsten vias can ensure the stability of the conductive path. Since the process for fabricating tungsten vias is mature, the surface flatness of the resulting insulating layer 3 is good, which is beneficial for reducing contact resistance.

[0086] Of course, tungsten vias are not only suitable for the connection between conductive line 2 and transition electrode 1, but also for the connection between transition electrode 1 and the first electrode layer, as well as the connection between other wiring layers.

[0087] In some embodiments, the transfer electrode 1 and the second electrode 601 are disposed in the same layer, so that the transfer electrode 1 and the second electrode 601 can be manufactured simultaneously, thereby simplifying the process and saving costs.

[0088] The substrate 5 can be a silicon substrate, and the display substrate also includes a voltage converter integrated in the substrate 5. The input terminal of the voltage converter is electrically connected to the pads, and the output terminal is electrically connected to at least a first position of the power line 2. The voltage converter is used to convert the voltage transmitted from the flexible circuit board received by the pads into the voltage required for the light-emitting device 6 to operate.

[0089] The distances between the first position and the two ends of the power cord 2 are the first distance and the second distance, respectively, and the ratio of the first distance to the second distance is between 1:3 and 3:1, thereby making the first position (see...) Figure 9 The location indicated by the middle arrow is closer to the center of power line 2. Compared to the method where the output of the voltage converter is only connected to the end of power line 2, connecting the output of the voltage converter to the middle of power line 2 can improve the uniformity of voltage distribution on power line 2, thereby improving the display uniformity of the display substrate.

[0090] For example, the ratio of the first distance to the second distance is 1:3, 1:2, 1:1, 2:1, or 3:1.

[0091] In some embodiments, the first distance and the second distance are equal, that is, the ratio of the first distance to the second distance is 1:1, thereby further improving the uniformity of voltage distribution on the power line 2.

[0092] In some embodiments, the voltage converter may include a low-dropout linear regulator.

[0093] In some embodiments, the power cord 2 can be provided on the side of the display area AA close to the binding area 10, or the power cord 2 can be provided on opposite sides of the display area AA, or the power cord 2 can be provided around the display area AA.

[0094] In some embodiments, the substrate 5 is a silicon substrate, and the display substrate further includes a driving circuit (not shown) integrated in the substrate 5. The driving circuit may include multiple transistors and capacitors, for example, a 2T1C circuit, a 7T1C circuit, or an 8T1C circuit, etc. The driving circuit is used to provide a driving circuit for the light-emitting device 6.

[0095] Figure 10 This is a cross-sectional view of another display substrate provided in an embodiment of this disclosure, such as... Figure 10 As shown, the display substrate also includes a first encapsulation layer 110, a second encapsulation layer 112, a color filter layer 111, and a protective layer 12. The first encapsulation layer 110 is disposed on the side of the light-emitting device 6 away from the substrate 5, the second encapsulation layer 112 is disposed on the side of the first encapsulation layer 110 away from the substrate 5, and the color filter layer 111 is disposed between the first encapsulation layer 110 and the second encapsulation layer 112.

[0096] The multiple light-emitting devices 6 may include red, green, and blue light-emitting devices. The color filter layer 111 includes a color resist block corresponding to each light-emitting device 6, the color of which is the same as that of the corresponding light-emitting device 6. Alternatively, all light-emitting devices 6 may be blue light-emitting devices. The color filter layer 111 includes a red quantum dot portion, a green quantum dot portion, and a scattering portion. The red and green quantum dot portions emit red light and filter light respectively under blue light excitation, while the scattering portion scatters the blue light emitted by the blue light-emitting devices, thereby achieving color display. The second encapsulation layer 112, used in conjunction with the first encapsulation layer 110, can effectively encapsulate the light-emitting devices 6, thereby effectively blocking water vapor and oxygen, thus protecting the light-emitting devices 6 and extending their lifespan.

[0097] The second encapsulation layer 112 and the protective layer 12 are sequentially stacked on the side of the color filter layer 111 away from the substrate 5, serving to protect the color filter layer 111. Preferably, both the first encapsulation layer 110 and the second encapsulation layer 112 are made of one or more organic or inorganic materials with good sealing properties. These materials can be silicon oxide, silicon nitride, etc., thereby protecting the structure of the light-emitting device 6 and achieving a good sealing effect. The protective layer 12 can be a glass cover or a cover made of other materials; in this disclosure, the protective layer 12 is made of a high-transmittance plain glass.

[0098] This disclosure also provides a display device, including the display substrate in the above embodiments.

[0099] The display device can be any product or component with display function, such as electronic paper, mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator.

[0100] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A display substrate having a display area and a peripheral area, the peripheral area surrounding the display area, characterized in that, The display substrate comprises: a substrate substrate; at least one power line in the peripheral area, the power line being disposed on the substrate substrate; a plurality of transfer electrodes in the peripheral area, the transfer electrodes being disposed on a side of the power line away from the substrate substrate and electrically connected with the power line; the transfer electrodes being located on a side of the display area; a plurality of light emitting devices in the display area, the light emitting devices being disposed on the substrate substrate and comprising first electrodes, the first electrodes being electrically connected with the transfer electrodes; wherein the transfer electrodes comprise a plurality of electrode strips electrically connected, the plurality of electrode strips being arranged along an extension direction of a corresponding edge of the display area; the peripheral area comprises a binding area on a side of the display area, the binding area being used for binding a flexible circuit board; the plurality of transfer electrodes comprises at least one first transfer electrode, wherein the first transfer electrode is disposed between the display area and the binding area, and / or on a side of the display area away from the binding area; the plurality of electrode strips in the first transfer electrode comprises a plurality of first electrode strips electrically connected and a plurality of second electrode strips electrically connected, the plurality of first electrode strips being located on a side of the plurality of second electrode strips, the first electrode strips being curved structures protruding towards the second electrode strips, and the second electrode strips being curved structures protruding towards the first electrode strips.

2. The display substrate of claim 1, wherein, The first transfer electrode further comprises at least one first connecting strip and at least one second connecting strip, the plurality of first electrode strips being electrically connected through the first connecting strip, and the plurality of second electrode strips being electrically connected through the second connecting strip. 3.The display substrate of claim 2, wherein, A middle part of each first electrode strip is connected with the first connecting strip, and a middle part of each second electrode strip is connected with the second connecting strip. 4.The display substrate of claim 2, wherein, The first transfer electrode comprises a plurality of first connecting strips and a plurality of second connecting strips, one end of the plurality of first electrode strips close to the display area is connected with a first first connecting strip, one end of the plurality of first electrode strips away from the display area is connected with a second first connecting strip, and a middle part of each first electrode strip is connected with a third first connecting strip; one end of the plurality of second electrode strips close to the display area is connected with a first second connecting strip, one end of the plurality of second electrode strips away from the display area is connected with a second second connecting strip, and a middle part of each second electrode strip is connected with a third second connecting strip. 5.The display substrate of claim 2, wherein, The first transfer electrode comprises a plurality of first connecting strips and a plurality of second connecting strips, and the ends of every two adjacent first electrode strips are connected through one first connecting strip, so that the plurality of first electrode strips and the plurality of first connecting strips form a bending structure; and the ends of every two adjacent second electrode strips are connected through one second connecting strip, so that the plurality of second electrode strips and the plurality of second connecting strips form a bending structure. 6.The display substrate of claim 2, wherein, The first connecting strip and the plurality of first electrode strips form an integrated structure, and the second connecting strip and the plurality of second electrode strips form an integrated structure.

7. The display substrate according to any one of claims 2 to 6, characterized in that, The first electrode strip comprises a first sub-electrode and a second sub-electrode connected to each other, and the extending directions of the first sub-electrode and the second sub-electrode are crossed to form a curved structure. The second electrode strip comprises a third sub-electrode and a fourth sub-electrode connected to each other, and the extending directions of the third sub-electrode and the fourth sub-electrode are crossed to form a curved structure. At least one of the first sub-electrode, the second sub-electrode, the third sub-electrode and the fourth sub-electrode has a straight edge.

8. The display substrate according to any one of claims 2 to 6, characterized in that, The first electrode strip comprises a first sub-electrode and a second sub-electrode connected to each other, and the extending directions of the first sub-electrode and the second sub-electrode are crossed to form a curved structure. The second electrode strip comprises a third sub-electrode and a fourth sub-electrode connected to each other, and the extending directions of the third sub-electrode and the fourth sub-electrode are crossed to form a curved structure. At least one of the first sub-electrode, the second sub-electrode, the third sub-electrode and the fourth sub-electrode has a broken line edge.

9. The display substrate according to any one of claims 2 to 6, characterized in that, The first transfer electrode is a mirror-symmetrical pattern about a reference axis, the reference axis passes through the center of the display area and extends in a direction from the display area to the binding area.

10. The display substrate according to any one of claims 2 to 6, characterized in that, The plurality of transfer electrodes comprises two first transfer electrodes and two second transfer electrodes, the two first transfer electrodes are respectively located between the display area and the binding area and on a side of the display area away from the binding area, and the two second transfer electrodes are connected to the two first transfer electrodes to form a ring structure around the display area.

11. The display substrate according to any one of claims 1 to 6, characterized in that, The display substrate further comprises: An insulating layer is arranged between the layer where the power supply line is located and the layer where the transfer electrode is located, and a plurality of vias are arranged on the insulating layer, a conductive column is arranged in each via, one end of the conductive column is connected to the transfer electrode, and the other end is connected to the power supply line. 12.The display substrate according to any one of claims 1 to 6, characterized in that, The light emitting device further comprises a second electrode located between the first electrode and the substrate substrate, wherein the transfer electrode and the second electrode are arranged in the same layer. 13.The display substrate according to any one of claims 1 to 6, wherein, The peripheral area comprises a binding area located on one side of the display area, and a bonding pad is arranged in the binding area. The display substrate further comprises: a voltage converter integrated in the substrate substrate, an input end of the voltage converter is electrically connected to the bonding pad, and an output end is electrically connected to at least a first position of the power supply line, wherein the distance between the first position and the two ends of the power supply line is a first distance and a second distance respectively, and the ratio of the first distance to the second distance is between 1:3 and 3:

1.

14. A display device comprising: The display device comprises the display substrate according to any one of claims 1 to 13.

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