Display substrate and display apparatus

Abstract

A display substrate and a display apparatus. The display substrate comprises a base substrate and a plurality of sub-pixels located on the base substrate, wherein each sub-pixel comprises a first electrode, a light-emitting functional layer and a second electrode; the light-emitting functional layer comprises a first light-emitting layer, a second light-emitting layer and a charge generation layer located between the first light-emitting layer and the second light-emitting layer, all of which are stacked; the plurality of sub-pixels comprise first-color sub-pixels, second-color sub-pixels and third-color sub-pixels, and one first-color sub-pixel and one second-color sub-pixel are spaced apart to form a sub-pixel pair; and a first partition structure is provided between the sub-pixel pair and an adjacent third-color sub-pixel, a second partition structure is provided between the first-color sub-pixel and the second-color sub-pixel in the sub-pixel pair, and the charge generation layer is disconnected at the positions where the first partition structure and the second partition structure are located. Therefore, the display substrate enables a cathode to be not completely partitioned, and thus the impedance of the cathode can be reduced.

Description

Display substrate and display device

[0001] This application claims priority to Chinese Patent Application No. 2024103827560 filed on March 29, 2024, and the contents of the above-mentioned Chinese patent application disclosure are hereby incorporated by reference in their entirety as a part of this application. Technical Field

[0002] Embodiments of the present disclosure relate to a display substrate and a display device. Background Art

[0003] With the continuous development of display technology, organic light-emitting diode display devices (OLED) have become a research hotspot and technology development direction for major manufacturers due to their advantages such as wide color gamut, high contrast, thin and light design, self-luminescence, and wide viewing angle.

[0004] Currently, organic light-emitting diode (OLED) displays are widely used in a variety of electronic products, ranging from small devices like smart bracelets, smart watches, smartphones, and tablets to large devices like laptops, desktop computers, and televisions. Consequently, market demand for active-matrix organic light-emitting diode (OLED) displays is also growing rapidly. Summary of the Invention

[0005] Embodiments of the present disclosure provide a display substrate and a display device. The display substrate can disconnect the charge generation layer via the first and second partition structures described above, thereby preventing signal crosstalk between adjacent sub-pixels. Furthermore, the display substrate does not require a fully enclosed partition structure, thereby preventing the cathode from being completely isolated and reducing cathode impedance.

[0006] At least one embodiment of the present disclosure provides a display substrate, which includes: a base substrate; and a plurality of sub-pixels located on the base substrate, each of the sub-pixels including a first electrode, a light-emitting functional layer and a second electrode, the light-emitting functional layer including a first light-emitting layer, a second light-emitting layer and a charge generation layer located between the first light-emitting layer and the second light-emitting layer, the plurality of sub-pixels including a first color sub-pixel, a second color sub-pixel and a third color sub-pixel, a first color sub-pixel and a second color sub-pixel are arranged at intervals to form a sub-pixel pair, a first partition structure is provided between the sub-pixel pair and the adjacent third color sub-pixel, a second partition structure is provided between the first color sub-pixel and the second color sub-pixel in the sub-pixel pair, and the charge generation layer is disconnected at the position where the first partition structure and the second partition structure are located.

[0007] For example, in a display substrate provided in an embodiment of the present disclosure, the first partition structure includes: a first strip-shaped partition portion, a second strip-shaped partition portion, which is spaced apart from the first strip-shaped partition portion, the sub-pixel pair and the third color sub-pixel located on both sides of the first partition structure are arranged along a first direction, the first strip-shaped partition portion and the second strip-shaped partition portion both extend along a second direction, the second direction intersects with the first direction, and a virtual straight line extending along the first direction overlaps with the third color sub-pixel and the second strip-shaped partition portion, but does not overlap with the first strip-shaped partition portion.

[0008] For example, in a display substrate provided in an embodiment of the present disclosure, the first strip-shaped partition portion includes a plurality of first sub-partition portions and a first gap located between two adjacent first sub-partition portions, and the virtual straight line passes through the first gap.

[0009] For example, in a display substrate provided in an embodiment of the present disclosure, the second strip-shaped partition portion includes a plurality of second sub-partition portions and a second notch located between two adjacent second sub-partition portions, and the first notch and the second notch are staggered in the second direction.

[0010] For example, in a display substrate provided by an embodiment of the present disclosure, the first strip-shaped partition portion includes a plurality of first notches, and the second strip-shaped partition portion includes a plurality of second notches.

[0011] For example, in a display substrate provided in an embodiment of the present disclosure, the first strip-shaped partition portion and the second strip-shaped partition portion are staggered in the second direction, and the virtual straight line passes through the staggered area between the first strip-shaped partition portion and the second strip-shaped partition portion.

[0012] For example, in a display substrate provided in an embodiment of the present disclosure, the first strip-shaped partition portion and the second strip-shaped partition portion are spaced apart in the first direction, and the span of the first strip-shaped partition portion and the second strip-shaped partition portion in the second direction is greater than the size of the third color sub-pixel in the second direction.

[0013] For example, in a display substrate provided by an embodiment of the present disclosure, the lengths of the first strip-shaped partitioning portion and the second strip-shaped partitioning portion in the second direction are greater than the size of the third color sub-pixel in the second direction.

[0014] For example, in the display substrate provided by an embodiment of the present disclosure, the spans of the first strip-shaped partition portion and the second strip-shaped partition portion in the second direction are substantially equal.

[0015] For example, in the display substrate provided in an embodiment of the present disclosure, the first strip-shaped partition portions and the second strip-shaped partition portions in the two first partition structures located on both sides of the sub-pixel pair in the first direction are arranged in the same order.

[0016] For example, in the display substrate provided in an embodiment of the present disclosure, the first strip-shaped partition portions and the second strip-shaped partition portions in the two first partition structures located on both sides of the sub-pixel pair in the first direction are arranged in opposite orders.

[0017] For example, in the display substrate provided in an embodiment of the present disclosure, the distance between the sub-pixel pair and the first strip-shaped partition portion in the first direction is substantially equal to the distance between the third color sub-pixel and the second strip-shaped partition portion in the first direction.

[0018] For example, in a display substrate provided in an embodiment of the present disclosure, the first partition structure is a single strip-shaped partition portion, the second partition structure is a single strip-shaped partition portion, the first partition structure and the second partition structure are connected, the sub-pixel pair and the third color sub-pixel located on both sides of the first partition structure are arranged along a first direction, the second partition structure extends along the first direction, the first partition structure extends along a second direction, and the second direction intersects with the first direction.

[0019] For example, in the display substrate provided in one embodiment of the present disclosure, the two first partition structures located on both sides of the sub-pixel pair in the first direction are connected to the second partition structure between the first color sub-pixel and the second color sub-pixel in the sub-pixel pair.

[0020] For example, in the display substrate provided by an embodiment of the present disclosure, the size of the second partition structure in the first direction is larger than the size of the first color sub-pixel in the first direction.

[0021] For example, the display substrate provided by an embodiment of the present disclosure further includes: a third partition structure located between adjacent pairs of sub-pixels.

[0022] For example, in the display substrate provided by an embodiment of the present disclosure, the size of the third partition structure in the first direction is larger than the size of the first color sub-pixel in the first direction.

[0023] For example, in the display substrate provided in one embodiment of the present disclosure, a plurality of the sub-pixel pairs are arranged along the second direction to form a first sub-pixel row, a plurality of the third color sub-pixels are arranged along the second direction to form a second sub-pixel row, and a plurality of the first sub-pixel rows and a plurality of the second sub-pixel rows are alternately arranged along the first direction.

[0024] For example, in a display substrate provided in an embodiment of the present disclosure, the first electrode is an anode, and the second electrode is a cathode.

[0025] At least one embodiment of the present disclosure further provides a display device, comprising any one of the display substrates described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present disclosure, rather than limiting the present disclosure.

[0027] FIG1 is a schematic plan view of a display substrate provided in one embodiment of the present disclosure;

[0028] FIG2 is a cross-sectional schematic diagram of a sub-pixel provided in one embodiment of the present disclosure;

[0029] FIG3 is a schematic plan view of another display substrate provided by an embodiment of the present disclosure;

[0030] FIG4 is a schematic plan view of another display substrate provided by an embodiment of the present disclosure;

[0031] FIG5 is a schematic plan view of another display substrate provided by an embodiment of the present disclosure;

[0032] FIG6 is a schematic plan view of another display substrate provided by an embodiment of the present disclosure;

[0033] FIG7 is a schematic plan view of another display substrate provided by an embodiment of the present disclosure;

[0034] FIG8 is a schematic plan view of another display substrate provided by an embodiment of the present disclosure;

[0035] FIG9 is a schematic plan view of another display substrate provided by an embodiment of the present disclosure;

[0036] FIG10 is a schematic plan view of another display substrate provided in one embodiment of the present disclosure;

[0037] FIG11 is a schematic plan view of another display substrate provided by an embodiment of the present disclosure; and

[0038] FIG12 is a schematic diagram of a display device provided in accordance with an embodiment of the present disclosure. DETAILED DESCRIPTION

[0039] To make the purpose, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying 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.

[0040] Unless otherwise defined, the technical or scientific terms used in this disclosure should have the usual meanings understood by persons of ordinary skill in the field to which this disclosure belongs. The words "first", "second" and similar terms used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0041] Unless otherwise defined, the features such as "parallel", "perpendicular" and "same" used in the embodiments of the present disclosure include situations such as "parallel", "perpendicular", "same" in a strict sense, as well as situations such as "approximately parallel", "approximately perpendicular", "approximately the same", etc. that contain certain errors. Taking into account the errors associated with the measurement and the measurement of specific quantities (for example, the limitations of the measurement system), it is expressed as being within the acceptable deviation range for a specific value determined by a person of ordinary skill in the art. For example, the above-mentioned "approximately" may mean that the difference between the compared objects is within 10% or 5% of the average value of the compared objects. When the number of a component or element is not specifically indicated below in the embodiments of the present disclosure, it means that the component or element may be one or more, or may be understood as at least one. "At least one" refers to one or more, and "a plurality" refers to at least two.

[0042] With the continuous development of display technology, the market's pursuit of product power consumption, lifespan and display quality is also getting higher and higher. In order to further reduce power consumption, improve lifespan and achieve high brightness, the single-layer light-emitting layer in the light-emitting element of the OLED can be replaced with two light-emitting layers, and a charge generation layer (CGL) is added between the two light-emitting layers to achieve a double-layer light-emitting (Tandem EL) design. Since the display device using the double-layer light-emitting (Tandem EL) design has two light-emitting layers, its light-emitting brightness can be approximately equivalent to twice that of a single light-emitting layer. Therefore, the display device using the double-layer light-emitting design has the advantages of long life, low power consumption and high brightness.

[0043] In a display substrate employing a tandem structure, the presence of a charge generation layer requires a partition structure to isolate the charge generation layer in order to prevent signal crosstalk between different sub-pixels. However, the inventors of this application have noted that conventional partition structures, while isolating the charge generation layer, also isolate the cathode in the light-emitting element, thereby increasing the cathode impedance and hindering power consumption reduction and uniformity across the display substrate.

[0044] To this end, the embodiments of the present disclosure provide a display substrate and a display device. The display substrate includes a base substrate and a plurality of sub-pixels located on the base substrate; each sub-pixel includes a first electrode, a light-emitting functional layer, and a second electrode; the light-emitting functional layer includes a first light-emitting layer, a second light-emitting layer, and a charge generation layer located between the first and second light-emitting layers; the plurality of sub-pixels include a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel, wherein a first color sub-pixel and a second color sub-pixel are arranged alternately to form a sub-pixel pair; a first partition structure is provided between the sub-pixel pair and the adjacent third color sub-pixel, and a second partition structure is provided between the first color sub-pixel and the second color sub-pixel in the sub-pixel pair, and the charge generation layer is disconnected at the location of the first partition structure and the second partition structure. Thus, the display substrate can disconnect the charge generation layer through the above-mentioned first partition structure and the second partition structure, thereby avoiding signal crosstalk between adjacent sub-pixels; and the display substrate does not need to adopt a fully enclosed partition structure, so that the cathode is not completely isolated, thereby reducing the cathode impedance, reducing power consumption, and improving display uniformity.

[0045] The present disclosure also provides a display device including the above-mentioned display substrate, thereby preventing signal crosstalk between adjacent sub-pixels and achieving lower power consumption and higher display quality.

[0046] Hereinafter, the display substrate and the display device provided by the embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0047] FIG1 is a schematic plan view of a display substrate provided in accordance with an embodiment of the present disclosure; FIG2 is a schematic cross-sectional view of a sub-pixel provided in accordance with an embodiment of the present disclosure. As shown in FIG1 and FIG2, the display substrate 100 includes a base substrate 110 and a plurality of sub-pixels 120 located on the base substrate 110; each sub-pixel 120 includes a first electrode 121, a light-emitting functional layer 123, and a second electrode 122; the light-emitting functional layer 123 includes a first light-emitting layer 1231 and a second light-emitting layer 1232 stacked together, and a charge generation layer 1233 located between the first light-emitting layer 1231 and the second light-emitting layer 1232; the plurality of sub-pixels 120 include a first color sub-pixel 120A, a second color sub-pixel 120B, and a second color sub-pixel 120C. 0B and a third color sub-pixel 120C, a first color sub-pixel 120A and a second color sub-pixel 120B are alternately arranged to form a sub-pixel pair 120P; a first partition structure 140 is provided between the sub-pixel pair 120P and the adjacent third color sub-pixel 120C, and a second partition structure 150 is provided between the first color sub-pixel 120A and the second color sub-pixel 120B in the sub-pixel pair 120P. The charge generation layer 1233 is disconnected at the location where the first partition structure 140 and the second partition structure 150 are located. It should be noted that the above-mentioned light-emitting functional layer does not only include the first light-emitting layer and the second light-emitting layer that directly emit light, but also includes functional film layers for assisting light emission, such as: a hole transport layer, an electron transport layer, etc.; in addition, the above-mentioned charge generation layer is a conductive layer, configured to generate carriers, transport carriers, and inject carriers; the charge generation layer is a discontinuous structure or a non-integrated structure at the disconnected location.

[0048] In the display substrate provided by the embodiment of the present disclosure, the above-mentioned first partition structure and the second partition structure disconnect the charge generation layer, thereby avoiding the signal crosstalk between adjacent sub-pixels caused by the charge generation layer with higher conductivity; and the display substrate does not need to adopt a fully enclosed partition structure, so that the cathode is not completely isolated, thereby reducing the impedance of the cathode, reducing power consumption and improving display uniformity. On the other hand, since the display substrate can avoid crosstalk between adjacent sub-pixels through the above-mentioned first partition structure and the second partition structure, the display substrate can improve pixel density while adopting a double-layer light-emitting (Tandem EL) design. Therefore, the display substrate can have the advantages of long life, low power consumption, high brightness, high resolution, etc. It should be noted that the above-mentioned "adjacent sub-pixels" refer to two sub-pixels without other sub-pixels arranged between them; in addition, the above-mentioned first partition structure and the second partition structure can be in the form of partition columns or in the form of partition grooves, and the embodiment of the present disclosure is not limited here.

[0049] For example, the first electrode 131 may be an anode, and the second electrode 132 may be a cathode. For example, the cathode may be formed of a material with high conductivity and low work function, such as a metal material. For example, the anode may be formed of a transparent conductive material with a high work function.

[0050] In some examples, the anode may also include a reflective metal material to form a top-emitting microcavity.

[0051] For example, the electrical conductivity of the charge generation layer 1233 is greater than the electrical conductivity of the first light-emitting layer 1231 and the electrical conductivity of the second light-emitting layer 1232 , but is less than the electrical conductivity of the second electrode 122 .

[0052] In some examples, as shown in FIG2 , the sub-pixel 120 includes: a first electrode 121 on a substrate 110; a first hole transport layer 1241 on a side of the first electrode 121 away from the substrate 110; a first light-emitting layer 1231 on a side of the first hole transport layer 1241 away from the substrate 110; a charge generation layer 1233 on a side of the first light-emitting layer 1231 away from the substrate 110; a second hole transport layer 1242 on a side of the charge generation layer 1233 away from the first light-emitting layer 1231; a second light-emitting layer 1232 on a side of the second hole transport layer 1242 away from the charge generation layer 1233; an electron transport layer 125 on a side of the second light-emitting layer 1232 away from the second hole transport layer 1242; and a second electrode 122 on a side of the electron transport layer 125 away from the second hole transport layer 1242.

[0053] In some examples, as shown in FIG2 , the sub-pixel 120 may further include a first hole blocking layer 1261 located between the first light-emitting layer 1231 and the charge generation layer 1233, and a second hole blocking layer 1262 located between the second light-emitting layer 1232 and the electron transport layer 125. Thus, the sub-pixel can better balance the carrier concentration and improve the luminous efficiency.

[0054] For example, the materials of the first light-emitting layer and the second light-emitting layer can be selected from pyrene derivatives, anthracene derivatives, fluorene derivatives, perylene derivatives, styrylamine derivatives, metal complexes, and the like.

[0055] For example, the materials of the above-mentioned hole transport layer may include aromatic amines and dimethylfluorene or carbazole materials with hole transport properties, such as: 4,4'-bis[N-(1-naphthyl)-N-phenylamino]biphenyl (NPB), N,N'-bis(3-methylphenyl)-N,N'-diphenyl-[1,1'-biphenyl]-4,4'-diamine (TPD), 4-phenyl-4'-(9-phenylfluorene-9-yl)triphenylamine (BAFLP), 4,4'-bis[N-(9,9-dimethylfluorene-2-yl)-N-phenylamino]biphenyl (DFLDPBi), 4,4'-di(9-carbazolyl)biphenyl (CBP), 9-phenyl-3-[4-(10-phenyl-9-anthracenyl)phenyl]-9H-carbazole (PCzPA).

[0056] For example, the material of the electron transport layer may include aromatic heterocyclic compounds, such as benzimidazole derivatives, imidazole derivatives, pyrimidine derivatives, oxazine derivatives, quinoline derivatives, isoquinoline derivatives, phenanthroline derivatives, and the like.

[0057] For example, the above-mentioned first electrode can be made of a metal material, such as any one or more of magnesium (Mg), silver (Ag), copper (Cu), aluminum (Al), titanium (Ti) and molybdenum (Mo), or an alloy material of the above-mentioned metals, such as aluminum neodymium alloy (AlNd) or molybdenum niobium alloy (MoNb). It can be a single-layer structure, or a multi-layer composite structure, such as Ti / Al / Ti, etc., or a stack structure formed by metal and transparent conductive material, such as ITO / Ag / ITO, Mo / AlNd / ITO and other reflective materials.

[0058] For example, the second electrode may be made of any one or more of magnesium (Mg), silver (Ag), and aluminum (Al), or an alloy made of any one or more of the above metals, or a transparent conductive material, such as indium tin oxide (ITO), or a multilayer composite structure of metal and transparent conductive material.

[0059] For example, the material of the charge generation layer may include an n-type doped organic layer / inorganic metal oxide, such as Alq3:Mg / WO3, Bphen:Li / MoO3, BCP:Li / V2O5 and BCP:Cs / V2O5; or, an n-type doped organic layer / organic layer, such as Alq3:Li / HAT-CN; or, an n-type doped organic layer / p-type doped organic layer, such as BPhen:Cs / NPB:F4-TCNQ, Alq3:Li / NPB:FeCl3, TPBi:Li / NPB:FeCl3 and Alq3:Mg / m-MTDATA:F4-TCNQ; or, a non-doped type, such as F 16 CuPc / CuPc and Al / WO3 / Au.

[0060] In some examples, as shown in FIG. 2 , the charge generation layer 1233 of the sub-pixel 120 includes two charge generation sub-layers, one of which may be an N-type charge generation layer and the other may be a P-type charge generation layer.

[0061] For example, as shown in FIG2 , the charge generation layer 1233 includes an N-type charge generation layer 1233-1 and a P-type charge generation layer 1233-2. The N-type charge generation layer 1233-1 is located on a side of the first light-emitting layer 1231 away from the substrate 110, and the P-type charge generation layer 1233-2 is located on a side of the N-type charge generation layer 1233-1 away from the substrate 110.

[0062] For example, the material of the substrate may be made of one or more materials selected from the group consisting of glass, polyimide, polycarbonate, polyacrylate, polyetherimide, and polyethersulfone, and this embodiment includes but is not limited to these.

[0063] In some examples, as shown in FIG1 , the first partition structure 140 includes a first strip-shaped partition portion 141 and a second strip-shaped partition portion 142. The second strip-shaped partition portion 142 is spaced apart from the first strip-shaped partition portion 141. The sub-pixel pair 120P and the third-color sub-pixel 120C on either side of the first partition structure 140 are arranged along a first direction X. The first strip-shaped partition portion 141 and the second strip-shaped partition portion 142 both extend along a second direction Y, which intersects the first direction X. For example, the first direction X and the second direction Y are perpendicular to each other. A virtual straight line 310 extending along the first direction X overlaps the third-color sub-pixel 120C and the second strip-shaped partition portion 142, but does not overlap the first strip-shaped partition portion 141. As a result, the cathode on the light-emitting functional layer along the path of this virtual straight line is only affected by the second strip-shaped partition portion and is not completely blocked. This reduces cathode impedance, reduces power consumption, and improves display uniformity. It should be noted that a common display substrate uses a fully enclosed partition structure or at least two strip-shaped partition structures to isolate the charge generation layer, but this can easily result in the cathode being completely isolated.

[0064] In some examples, the first direction X may be the row direction of the display substrate, ie, the extending direction of the gate lines, and the second direction Y may be the column direction of the display substrate, ie, the extending direction of the data lines.

[0065] In some examples, as shown in FIG1 , the first strip-shaped partition portion 141 includes a plurality of first sub-partition portions 1410 and a first notch 1415 located between two adjacent first sub-partition portions 1410 , and the aforementioned virtual straight line passes through the first notch 1415 . Thus, the cathode on the first notch 1415 is not blocked by the first strip-shaped partition portion 141 .

[0066] In some examples, as shown in FIG. 1 , the second strip-shaped partition portion 142 is a single strip-shaped partition portion without any gaps, that is, the second strip-shaped partition portion 142 is continuously provided.

[0067] In some examples, as shown in FIG1 , the first and second strip-shaped partitions 141 and 142 are spaced apart in the first direction X. The span of the first and second strip-shaped partitions 141 and 142 in the second direction Y is greater than the size of the third-color sub-pixel 120C in the second direction Y. Thus, the first and second strip-shaped partitions can better isolate the charge generation layer between the sub-pixel pair and the third-color sub-pixel, preventing signal crosstalk between them. It should be noted that the aforementioned span refers to the distance between the two endpoints of the first strip-shaped partition in the second direction, or the distance between the two endpoints of the second strip-shaped partition in the second direction.

[0068] In some examples, as shown in FIG1 , the spans of the first strip-shaped partition portion 141 and the second strip-shaped partition portion 142 in the second direction Y are substantially equal. For example, the difference in the spans of the first strip-shaped partition portion 141 and the second strip-shaped partition portion 142 in the second direction Y is less than 10% of the average span of the first strip-shaped partition portion 141 and the second strip-shaped partition portion 142 in the second direction Y, and further, less than 5% of the average span of the first strip-shaped partition portion 141 and the second strip-shaped partition portion 142 in the second direction Y.

[0069] In some examples, as shown in FIG1 , the lengths of the first and second strip-shaped partitions 141 and 142 in the second direction Y are greater than the dimensions of the third-color sub-pixel 120C in the second direction Y. Thus, the first and second strip-shaped partitions can better isolate the charge generation layer between the sub-pixel pair and the third-color sub-pixel, preventing signal crosstalk between them. It should be noted that the length of the first strip-shaped partition refers to the sum of the lengths of the multiple first sub-partitions of the first strip-shaped partition.

[0070] In some examples, as shown in FIG. 1 , the length of the first strip-shaped partition portion 141 in the second direction Y is smaller than the length of the second strip-shaped partition portion 142 in the second direction Y.

[0071] 1 , the first strip partitioning portions 141 and the second strip partitioning portions 142 in the two first partitioning structures 140 on both sides of the sub-pixel pair 120P in the first direction X are arranged in the same order. In other words, the plurality of first partitioning structures are arranged in a repeated manner.

[0072] For example, as shown in Figure 1, the first strip-shaped partition portion 141 in the first partition structure 140 located on the left side of the sub-pixel pair 120P is located on the side of the second strip-shaped partition portion 142 close to the sub-pixel pair 120P, and the first strip-shaped partition portion 141 in the first partition structure 140 located on the right side of the sub-pixel pair 120P is located on the side of the second strip-shaped partition portion 142 away from the sub-pixel pair 120P.

[0073] In some examples, as shown in FIG. 1 , the first strip-shaped partitioning portion 141 is equidistant from the first color sub-pixel 120A and the second color sub-pixel 120B in the sub-pixel pair 120P in the first direction X, thereby improving display quality.

[0074] In some examples, as shown in FIG1 , the distance between the first strip-shaped partitioning portion 141 and the first color sub-pixel 120A in the sub-pixel pair 120P in the first direction X is equal to the distance between the second strip-shaped partitioning portion 141 and the third color sub-pixel 120C in the first direction X. Of course, embodiments of the present disclosure include but are not limited to this, and the distance between the first strip-shaped partitioning portion and the first color sub-pixel in the sub-pixel pair in the first direction X and the distance between the second strip-shaped partitioning portion and the third color sub-pixel in the first direction X may also be different. It should be noted that the boundaries of the first color sub-pixel, the second color sub-pixel, and the third color sub-pixel may be determined by their effective light-emitting areas.

[0075] In some examples, as shown in FIG1 , the size of the second partitioning structure 150 in the first direction X is larger than the size of the first color sub-pixel 120A in the first direction X and the size of the second color sub-pixel 120B in the first direction X. Of course, embodiments of the present disclosure are not limited to this, and the size of the second partitioning structure in the first direction, the size of the first color sub-pixel in the first direction, and the size of the second color sub-pixel in the first direction may also be substantially equal.

[0076] 1 , the display substrate 100 further includes a third partitioning structure 160 located between adjacent sub-pixel pairs 120P. The charge generation layer is disconnected at the location of the third partitioning structure 160 to prevent signal crosstalk between adjacent sub-pixel pairs.

[0077] In some examples, as shown in FIG1 , the size of the third partitioning structure 160 in the first direction X is larger than the size of the first color sub-pixel 120A in the first direction X and the size of the second color sub-pixel 120B in the first direction X. Of course, embodiments of the present disclosure are not limited to this, and the size of the third partitioning structure in the first direction, the size of the first color sub-pixel in the first direction, and the size of the second color sub-pixel in the first direction may also be substantially equal.

[0078] In some examples, first color subpixel 120A is configured to emit light of a first color, second color subpixel 120B is configured to emit light of a second color, and third color subpixel 120C is configured to emit light of a third color. The first, second, and third colors are different colors.

[0079] In some examples, the first color is red, the second color is green, and the third color is blue. Of course, the embodiments of the present disclosure include but are not limited to this, and the first color, the second color, and the third color may also be other colors.

[0080] In some examples, as shown in FIG1 , the orthographic projection of the first color sub-pixel 120A on the substrate 110 is a rectangle, the orthographic projection of the second color sub-pixel 120B on the substrate 110 is a rectangle, and the orthographic projection of the third color sub-pixel 120C on the substrate 110 is a rectangle. Of course, embodiments of the present disclosure include but are not limited to these, and the orthographic projections of the above-mentioned sub-pixels on the substrate may also have other shapes, such as rounded rectangles, circles, ellipses, polygons, etc. Furthermore, the orthographic projections of sub-pixels of different colors on the substrate may have the same or different shapes.

[0081] In some examples, as shown in FIG. 1 , the orthographic projection area of ​​the third color sub-pixel 120C on the substrate 110 is larger than the orthographic projection areas of the first color sub-pixel 120A and the second color sub-pixel 120B on the substrate 110 .

[0082] In some examples, as shown in FIG. 1 , a plurality of sub-pixel pairs 120P are arranged along the second direction Y to form a first sub-pixel row 210 , a plurality of third color sub-pixels 120C are arranged along the second direction Y to form a second sub-pixel row 220 , and the plurality of first sub-pixel rows 210 and the plurality of second sub-pixel rows 220 are alternately arranged along the first direction X.

[0083] Figure 3 is a schematic plan view of another display substrate provided by an embodiment of the present disclosure. Unlike the display substrate shown in Figure 1 , as shown in Figure 3 , the first strip-shaped partitioning portion 141 includes a plurality of first sub-partitioning portions 1410 and a plurality of first notches 1415 . Consequently, the cathodes located above the plurality of first notches 1415 are not blocked by the first strip-shaped partitioning portion 141 .

[0084] For example, as shown in FIG3 , the first strip-shaped partition portion 141 includes three first sub-partition portions 1410 and two first notches 1415. Each first notch 1415 is located between two adjacent first sub-partition portions 1410. Thus, the cathodes above the two first notches 1415 are not blocked by the first strip-shaped partition portion 141, thereby forming two unbroken portions or conductive paths.

[0085] 3 , the first notches 1415 of the first strip-shaped partition portion 141 have the same size in the second direction Y. However, embodiments of the present disclosure include but are not limited to this, and the first notches of the first strip-shaped partition portion have different sizes in the second direction.

[0086] In some examples, as shown in FIG. 3 , the second strip-shaped partition portion 142 is a single strip-shaped partition portion without any gaps, that is, the second strip-shaped partition portion 142 is continuously provided.

[0087] 3 , the first strip partitioning portions 141 and the second strip partitioning portions 142 in the two first partitioning structures 140 on both sides of the sub-pixel pair 120P in the first direction X are arranged in the same order. In other words, the plurality of first partitioning structures are arranged in a repeated manner.

[0088] For example, as shown in Figure 3, the first strip-shaped partition portion 141 in the first partition structure 140 located on the left side of the sub-pixel pair 120P is located on the side of the second strip-shaped partition portion 142 close to the sub-pixel pair 120P, and the first strip-shaped partition portion 141 in the first partition structure 140 located on the right side of the sub-pixel pair 120P is located on the side of the second strip-shaped partition portion 142 away from the sub-pixel pair 120P.

[0089] FIG4 is a schematic plan view of another display substrate provided in accordance with an embodiment of the present disclosure. As shown in FIG4 , the first strip-shaped partition portion 141 includes a plurality of first sub-partition portions 1410 and a first notch 1415 located between two adjacent first sub-partition portions 1410. The second strip-shaped partition portion 142 is a single strip-shaped partition portion without a notch; that is, the second strip-shaped partition portion 142 is continuously disposed. A virtual straight line 310 extending along the first direction X overlaps the third-color sub-pixel 120C and the second strip-shaped partition portion 142 and passes through the first notch 1415, thereby not overlapping the first strip-shaped partition portion 141. As a result, the cathode located on the light-emitting functional layer along the path of the virtual straight line is only affected by the second strip-shaped partition portion and is not completely isolated, thereby reducing cathode impedance, lowering power consumption, and improving display uniformity.

[0090] In some examples, as shown in FIG4 , the first and second strip-shaped partitions 141 and 142 are spaced apart in the first direction X. The span of the first and second strip-shaped partitions 141 and 142 in the second direction Y is greater than the size of the third-color sub-pixel 120C in the second direction Y. Thus, the first and second strip-shaped partitions can better isolate the charge generation layer between the sub-pixel pair and the third-color sub-pixel, preventing signal crosstalk between them. It should be noted that the aforementioned span refers to the distance between the two endpoints of the first strip-shaped partition in the second direction, or the distance between the two endpoints of the second strip-shaped partition in the second direction.

[0091] In some examples, as shown in FIG4 , the first strip-shaped partitioning portions 141 and the second strip-shaped partitioning portions 142 in the two first partitioning structures 140 located on either side of the sub-pixel pair 120P in the first direction X are arranged in the opposite order. In other words, the two first partitioning structures 140 located on either side of the sub-pixel pair 120P in the first direction X are mirror-symmetrical with respect to a virtual straight line passing through the sub-pixel pair 120P and extending in the second direction.

[0092] For example, as shown in Figure 4, the first strip-shaped partition portion 141 in the first partition structure 140 located on the left side of the sub-pixel pair 120P is located on the side of the second strip-shaped partition portion 142 close to the sub-pixel pair 120P, and the first strip-shaped partition portion 141 in the first partition structure 140 located on the right side of the sub-pixel pair 120P is also located on the side of the second strip-shaped partition portion 142 close to the sub-pixel pair 120P.

[0093] Figure 5 is a schematic plan view of another display substrate provided by an embodiment of the present disclosure. As shown in Figure 5, the first strip-shaped partitioning portion 141 includes multiple first sub-partitioning portions 1410 and multiple first notches 1415, with each first notch 1415 located between two adjacent first sub-partitioning portions 1410. The second strip-shaped partitioning portion 142 is a single strip-shaped partitioning portion without any notches, that is, the second strip-shaped partitioning portions 142 are arranged continuously. A virtual straight line 310 extending along the first direction X overlaps the third color sub-pixel 120C and the second strip-shaped partitioning portion 142 and passes through the first notches 1415, thereby not overlapping the first strip-shaped partitioning portion 141. Because the first strip-shaped partitioning portion 141 includes multiple first notches 1415, multiple virtual straight lines 310 can overlap the third color sub-pixel 120C and the second strip-shaped partitioning portion 142, but not overlap the first strip-shaped partitioning portion 141. Thus, the cathodes on the multiple first notches will not be separated by the first strip-shaped partitioning parts, thereby forming multiple unbroken parts or conductive channels, thereby reducing the impedance of the cathode, reducing power consumption and improving display uniformity.

[0094] In some examples, as shown in FIG5 , the distance between the sub-pixel pair 120P and the first strip-shaped partition portion 141 in the first direction X is substantially equal to the distance between the third color sub-pixel 120C and the second strip-shaped partition portion 142 in the first direction X. Of course, embodiments of the present disclosure include but are not limited to this, and the distance between the sub-pixel pair and the first strip-shaped partition portion in the first direction X and the distance between the third color sub-pixel and the second strip-shaped partition portion in the first direction X may also be unequal.

[0095] In some examples, as shown in FIG5 , the first strip-shaped partitioning portions 141 and the second strip-shaped partitioning portions 142 in the two first partitioning structures 140 located on either side of the sub-pixel pair 120P in the first direction X are arranged in the opposite order. In other words, the two first partitioning structures 140 located on either side of the sub-pixel pair 120P in the first direction X are mirror-symmetrical with respect to a virtual straight line passing through the sub-pixel pair 120P and extending in the second direction Y.

[0096] For example, as shown in Figure 5, the first strip-shaped partition portion 141 in the first partition structure 140 located on the left side of the sub-pixel pair 120P is located on the side of the second strip-shaped partition portion 142 close to the sub-pixel pair 120P, and the first strip-shaped partition portion 141 in the first partition structure 140 located on the right side of the sub-pixel pair 120P is also located on the side of the second strip-shaped partition portion 142 close to the sub-pixel pair 120P.

[0097] FIG6 is a schematic plan view of another display substrate provided by an embodiment of the present disclosure. As shown in FIG6, the display substrate 100 includes a base substrate 110 and a plurality of sub-pixels 120 located on the base substrate 110; each sub-pixel 120 includes a first electrode 121, a light-emitting functional layer 123, and a second electrode 122; the light-emitting functional layer 123 includes a first light-emitting layer 1231, a second light-emitting layer 1232, and a charge generation layer 1233 located between the first light-emitting layer 1231 and the second light-emitting layer 1232; the plurality of sub-pixels 120 include a first color sub-pixel 120A, a second color sub-pixel 120B, and a second color sub-pixel 120C. B and a third color sub-pixel 120C, a first color sub-pixel 120A and a second color sub-pixel 120B are alternately arranged to form a sub-pixel pair 120P; a first partition structure 140 is provided between the sub-pixel pair 120P and the adjacent third color sub-pixel 120C, and a second partition structure 150 is provided between the first color sub-pixel 120A and the second color sub-pixel 120B in the sub-pixel pair 120P. The charge generation layer 1233 is disconnected at the location of the first partition structure 140 and the second partition structure 150. It should be noted that the structures of the above sub-pixels can be seen in the relevant descriptions of Figures 2 and 3.

[0098] In the display substrate provided by the embodiment of the present disclosure, the above-mentioned first partition structure and the second partition structure disconnect the charge generation layer, thereby avoiding the signal crosstalk between adjacent sub-pixels caused by the charge generation layer with higher conductivity; and the display substrate does not need to adopt a fully enclosed partition structure, so that the cathode is not completely isolated, thereby reducing the impedance of the cathode, reducing power consumption and improving display uniformity. On the other hand, since the display substrate can avoid crosstalk between adjacent sub-pixels through the above-mentioned first partition structure and the second partition structure, the display substrate can improve pixel density while adopting a double-layer light-emitting (Tandem EL) design. Therefore, the display substrate can have the advantages of long life, low power consumption, high brightness, high resolution, etc. It should be noted that the above-mentioned "adjacent sub-pixels" refer to two sub-pixels without other sub-pixels arranged between them; in addition, the above-mentioned first partition structure and the second partition structure can be in the form of partition columns or in the form of partition grooves, and the embodiment of the present disclosure is not limited here.

[0099] For example, the first electrode 131 may be an anode, and the second electrode 132 may be a cathode. For example, the cathode may be formed of a material with high conductivity and low work function, such as a metal material. For example, the anode may be formed of a transparent conductive material with a high work function.

[0100] In some examples, the anode may also include a reflective metal material to form a top-emitting microcavity.

[0101] For example, the electrical conductivity of the charge generation layer 1233 is greater than the electrical conductivity of the first light-emitting layer 1231 and the electrical conductivity of the second light-emitting layer 1232 , but is less than the electrical conductivity of the second electrode 122 .

[0102] In some examples, as shown in FIG6 , the size of the second partition structure 150 in the first direction X is larger than the size of the first color sub-pixel 120A in the first direction X and the size of the second color sub-pixel 120B in the first direction X. Of course, embodiments of the present disclosure are not limited to this, and the size of the second partition structure in the first direction, the size of the first color sub-pixel in the first direction, and the size of the second color sub-pixel in the first direction may also be substantially equal.

[0103] In some examples, as shown in FIG6 , the first strip-shaped partitions 141 and the second strip-shaped partitions 142 are staggered in the second direction Y, such that a virtual straight line 310 passes through a staggered region 190 between the first strip-shaped partitions 141 and the second strip-shaped partitions 142. Thus, the virtual straight line can overlap with the third-color sub-pixel 120C and the second strip-shaped partitions 142, but not with the first strip-shaped partitions 141. Consequently, the cathode located in the staggered region is not interrupted by the first or second strip-shaped partitions, thereby forming an unbroken portion or conductive path. This can reduce cathode impedance, lower power consumption, and improve display uniformity.

[0104] In some examples, as shown in FIG6 , the first strip-shaped partition portion 141 is moved upward by a distance in the second direction Y, thereby being offset from the second strip-shaped partition portion 142 in the second direction Y. Of course, the embodiments of the present disclosure include but are not limited to this, and the second strip-shaped partition portion may also be moved by a distance in the second direction Y, thereby being offset from the first strip-shaped partition portion in the second direction Y.

[0105] In some examples, as shown in FIG6 , the first strip-shaped partition portion 141 is a single strip-shaped partition portion, and the second strip-shaped partition portion 142 is a single strip-shaped partition portion; that is, the first strip-shaped partition portion 141 is continuously arranged without a plurality of first sub-partition portions, and the second strip-shaped partition portion 142 is continuously arranged without a plurality of second sub-partition portions. Of course, the embodiments of the present disclosure include but are not limited to this.

[0106] Figure 7 is a schematic plan view of another display substrate provided by an embodiment of the present disclosure. As shown in Figure 7, the first strip-shaped partition portion 141 and the second strip-shaped partition portion 142 are offset in the second direction Y, such that a virtual straight line passes through the offset region 190 between the first strip-shaped partition portion 141 and the second strip-shaped partition portion 142. Furthermore, the first strip-shaped partition portion 141 includes a plurality of first sub-partition portions 1410 and a plurality of first notches 1415, each first notch 1415 being located between two adjacent first sub-partition portions 1410. The second strip-shaped partition portion 142 is a single strip-shaped partition portion without any notches; in other words, the second strip-shaped partition portions 142 are arranged continuously. A virtual straight line extending along the first direction X overlaps the third color sub-pixel 120C and the second strip-shaped partition portion 142, and passes through the first notch 1415, thereby not overlapping the first strip-shaped partition portion 141. Thus, the aforementioned virtual straight line can exist at both the location of the notch region and the location of the plurality of first notches, overlapping with the third-color sub-pixel and the second strip-shaped partition, but not with the first strip-shaped partition. Consequently, the cathode at both the location of the notch region and the location of the plurality of first notches is not interrupted by the first strip-shaped partition, thereby forming multiple uninterrupted portions or conductive paths, thereby reducing cathode impedance, lowering power consumption, and improving display uniformity.

[0107] It is worth noting that the above embodiments are described using the example that the first strip-shaped partition portion is located on the side of the second strip-shaped partition portion close to the sub-pixel pair. However, the embodiments of the present disclosure include but are not limited to this. The positions of the above-mentioned first strip-shaped partition portion and the second strip-shaped partition portion can be interchanged.

[0108] Figure 8 is a schematic plan view of another display substrate provided by an embodiment of the present disclosure. As shown in Figure 8, the first strip-shaped partitioning portion 141 includes a plurality of first sub-partitioning portions 1410 and a first notch 1415 located between two adjacent first sub-partitioning portions 1410; the second strip-shaped partitioning portion 142 includes a plurality of second sub-partitioning portions 1420 and a second notch 1425 located between two adjacent second sub-partitioning portions 1420. Thus, a virtual straight line extending along the first direction can overlap with the third color sub-pixel and the second pixel partitioning portion and pass through the first notch, thereby not overlapping with the first pixel partitioning portion. Another virtual straight line extending along the first direction can overlap with the third color sub-pixel and the first pixel partitioning portion and pass through the second notch, thereby not overlapping with the second pixel partitioning portion. Consequently, the cathode located on these two virtual straight lines can be affected by only one strip-shaped partitioning portion and is not completely blocked, thereby reducing cathode impedance, lowering power consumption, and improving display uniformity. It should be noted that a common display substrate uses a fully enclosed partition structure or at least two strip-shaped partition structures to isolate the charge generation layer, but this can easily result in the cathode being completely isolated.

[0109] In some examples, as shown in FIG8 , the number of first notches 1415 included in the first strip-shaped partition portion 141 may be different from the number of second notches 1425 included in the second strip-shaped partition portion 142. Of course, embodiments of the present disclosure include but are not limited to this, and the number of first notches included in the first strip-shaped partition portion and the number of second notches included in the second strip-shaped partition portion may be the same.

[0110] In some examples, as shown in FIG8 , the number of first notches 1415 included in the first strip-shaped partition portion 141 is smaller than the number of second notches 1425 included in the second strip-shaped partition portion 142. Of course, embodiments of the present disclosure include but are not limited to this, and the number of first notches included in the first strip-shaped partition portion may also be greater than the number of second notches included in the second strip-shaped partition portion.

[0111] 8 , the first strip partitioning portions 141 and the second strip partitioning portions 142 in the two first partitioning structures 140 on both sides of the sub-pixel pair 120P in the first direction X are arranged in the same order. In other words, the plurality of first partitioning structures are arranged in a repeated manner.

[0112] For example, as shown in Figure 8, the first strip-shaped partition portion 141 in the first partition structure 140 located on the left side of the sub-pixel pair 120P is located on the side of the second strip-shaped partition portion 142 close to the sub-pixel pair 120P, and the first strip-shaped partition portion 141 in the first partition structure 140 located on the right side of the sub-pixel pair 120P is located on the side of the second strip-shaped partition portion 142 away from the sub-pixel pair 120P.

[0113] FIG9 is a schematic plan view of another display substrate provided in an embodiment of the present disclosure. As shown in FIG9 , the first strip-shaped partition portion 141 includes a plurality of first sub-partition portions 1410 and a first notch 1415 located between two adjacent first sub-partition portions 1410; the second strip-shaped partition portion 142 includes a plurality of second sub-partition portions 1420 and a second notch 1425 located between two adjacent second sub-partition portions 1420. Unlike the display substrate shown in FIG8 , the arrangement order of the first strip-shaped partition portions 141 and the second strip-shaped partition portions 142 in the two first partition structures 140 located on either side of the sub-pixel pair 120P in the first direction X is reversed. In other words, the two first partition structures 140 located on either side of the sub-pixel pair 120P in the first direction X are mirror-symmetrical with respect to a virtual line passing through the sub-pixel pair 120P and extending along the second direction Y.

[0114] For example, as shown in Figure 9, the first strip-shaped partition portion 141 in the first partition structure 140 located on the left side of the sub-pixel pair 120P is located on the side of the second strip-shaped partition portion 142 close to the sub-pixel pair 120P, and the first strip-shaped partition portion 141 in the first partition structure 140 located on the right side of the sub-pixel pair 120P is also located on the side of the second strip-shaped partition portion 142 close to the sub-pixel pair 120P.

[0115] FIG10 is a schematic plan view of another display substrate provided by an embodiment of the present disclosure. As shown in FIG10 , the display substrate 100 includes a base substrate 110 and a plurality of sub-pixels 120 located on the base substrate 110; each sub-pixel 120 includes a first electrode 121, a light-emitting functional layer 123, and a second electrode 122; the light-emitting functional layer 123 includes a first light-emitting layer 1231, a second light-emitting layer 1232, and a charge generation layer 1233 located between the first light-emitting layer 1231 and the second light-emitting layer 1232; the plurality of sub-pixels 120 include a first color sub-pixel 120A, a second color sub-pixel 120B, and a second color sub-pixel 120C. B and a third color sub-pixel 120C, a first color sub-pixel 120A and a second color sub-pixel 120B are alternately arranged to form a sub-pixel pair 120P; a first partition structure 140 is provided between the sub-pixel pair 120P and the adjacent third color sub-pixel 120C, and a second partition structure 150 is provided between the first color sub-pixel 120A and the second color sub-pixel 120B in the sub-pixel pair 120P. The charge generation layer 1233 is disconnected at the location of the first partition structure 140 and the second partition structure 150. It should be noted that the structures of the above sub-pixels can be seen in the relevant descriptions of Figures 2 and 3.

[0116] In the display substrate provided by the embodiment of the present disclosure, the above-mentioned first partition structure and the second partition structure disconnect the charge generation layer, thereby avoiding the signal crosstalk between adjacent sub-pixels caused by the charge generation layer with higher conductivity; and the display substrate does not need to adopt a fully enclosed partition structure, so that the cathode is not completely isolated, thereby reducing the impedance of the cathode, reducing power consumption and improving display uniformity. On the other hand, since the display substrate can avoid crosstalk between adjacent sub-pixels through the above-mentioned first partition structure and the second partition structure, the display substrate can improve pixel density while adopting a double-layer light-emitting (Tandem EL) design. Therefore, the display substrate can have the advantages of long life, low power consumption, high brightness, high resolution, etc. It should be noted that the above-mentioned "adjacent sub-pixels" refer to two sub-pixels without other sub-pixels arranged between them; in addition, the above-mentioned first partition structure and the second partition structure can be in the form of partition columns or in the form of partition grooves, and the embodiment of the present disclosure is not limited here.

[0117] For example, the first electrode 131 may be an anode, and the second electrode 132 may be a cathode. For example, the cathode may be formed of a material with high conductivity and low work function, such as a metal material. For example, the anode may be formed of a transparent conductive material with a high work function.

[0118] In some examples, the anode may also include a reflective metal material to form a top-emitting microcavity.

[0119] For example, the electrical conductivity of the charge generation layer 1233 is greater than the electrical conductivity of the first light-emitting layer 1231 and the electrical conductivity of the second light-emitting layer 1232 , but is less than the electrical conductivity of the second electrode 122 .

[0120] In some examples, as shown in FIG10 , the size of the second partitioning structure 150 in the first direction X is larger than the size of the first color sub-pixel 120A in the first direction X and the size of the second color sub-pixel 120B in the first direction X. Of course, embodiments of the present disclosure are not limited to this, and the size of the second partitioning structure in the first direction, the size of the first color sub-pixel in the first direction, and the size of the second color sub-pixel in the first direction may also be substantially equal.

[0121] In some examples, as shown in FIG10 , the first partition structure 140 is a single strip-shaped partition portion, and the second partition structure 150 is a single strip-shaped partition portion. The first partition structure 140 and the second partition structure 150 are connected, so that the orthographic projection of the entire structure formed by the first partition structure 140 and the second partition structure 150 on the base substrate 110 is T-shaped. The sub-pixel pair 120P and the third color sub-pixel 120C located on either side of the first partition structure 140 are arranged along a first direction X. The second partition structure 150 extends along the first direction X, and the first partition structure 140 extends along a second direction Y. The second direction Y intersects the first direction X, for example, the second direction Y and the first direction X are perpendicular to each other. Therefore, since the first partition structure and the second partition structure are connected, the charge generation layer between the adjacent first color sub-pixels and the third color sub-pixels can be better isolated, and at the same time, the cathode is only affected by one partition structure and will not be completely isolated, thereby reducing the impedance of the cathode, reducing power consumption and improving display uniformity; similarly, the charge generation layer between the adjacent second color sub-pixels and the third color sub-pixels can be better isolated, and at the same time, the cathode is only affected by one partition structure and will not be completely isolated, thereby reducing the impedance of the cathode, reducing power consumption and improving display uniformity.

[0122] 10 , the display substrate 100 further includes a third partitioning structure 160 located between adjacent sub-pixel pairs 120P. The charge generation layer is disconnected at the location of the third partitioning structure 160 to prevent signal crosstalk between adjacent sub-pixel pairs.

[0123] In some examples, as shown in FIG10 , the size of the third partitioning structure 160 in the first direction X is larger than the size of the first color sub-pixel 120A in the first direction X and the size of the second color sub-pixel 120B in the first direction X. Of course, embodiments of the present disclosure are not limited to this, and the size of the third partitioning structure in the first direction, the size of the first color sub-pixel in the first direction, and the size of the second color sub-pixel in the first direction may also be substantially equal.

[0124] In some examples, as shown in FIG. 10 , the third partition structure 160 may also be a single strip-shaped partition portion.

[0125] In some examples, the first direction X may be the row direction of the display substrate, ie, the extending direction of the gate lines, and the second direction Y may be the column direction of the display substrate, ie, the extending direction of the data lines.

[0126] In some examples, first color subpixel 120A is configured to emit light of a first color, second color subpixel 120B is configured to emit light of a second color, and third color subpixel 120C is configured to emit light of a third color. The first, second, and third colors are different colors.

[0127] In some examples, the first color is red, the second color is green, and the third color is blue. Of course, the embodiments of the present disclosure include but are not limited to this, and the first color, the second color, and the third color may also be other colors.

[0128] In some examples, as shown in FIG10 , the orthographic projection of the first color sub-pixel 120A on the substrate 110 is a rectangle, the orthographic projection of the second color sub-pixel 120B on the substrate 110 is a rectangle, and the orthographic projection of the third color sub-pixel 120C on the substrate 110 is a rectangle. Of course, the embodiments of the present disclosure include but are not limited to these, and the orthographic projections of the above-mentioned sub-pixels on the substrate may also have other shapes, such as rounded rectangles, circles, ellipses, polygons, etc. Furthermore, the orthographic projections of sub-pixels of different colors on the substrate may have the same or different shapes.

[0129] In some examples, as shown in FIG. 10 , the area of ​​the orthographic projection of the third color sub-pixel 120C on the substrate 110 is greater than the area of ​​the orthographic projection of the first color sub-pixel 120A and the area of ​​the orthographic projection of the second color sub-pixel 120B on the substrate 110 .

[0130] In some examples, as shown in FIG. 10 , a plurality of sub-pixel pairs 120P are arranged along the second direction Y to form a first sub-pixel row 210, a plurality of third color sub-pixels 120C are arranged along the second direction Y to form a second sub-pixel row 220, and the plurality of first sub-pixel rows 210 and the plurality of second sub-pixel rows 220 are alternately arranged along the first direction X.

[0131] Figure 11 is a schematic plan view of another display substrate provided by an embodiment of the present disclosure. As shown in Figure 11, the first partition structure 140 is a single strip-shaped partition portion, and the second partition structure 150 is a single strip-shaped partition portion. The two first partition structures 140 located on either side of the sub-pixel pair 120P in the first direction X are both connected to the second partition structure 150 between the first color sub-pixel 120A and the second color sub-pixel 120B in the sub-pixel pair 120P. As a result, the two first partition structures and one second partition structure form an H-shaped structure on the base substrate. Since the first partition structure and the second partition structure are connected, the charge generation layer between the adjacent first color sub-pixels and the third color sub-pixels can be better isolated, and at the same time, the cathode is only affected by one partition structure and will not be completely isolated, thereby reducing the impedance of the cathode, reducing power consumption and improving display uniformity; similarly, the charge generation layer between the adjacent second color sub-pixels and the third color sub-pixels can be better isolated, and at the same time, the cathode is only affected by one partition structure and will not be completely isolated, thereby reducing the impedance of the cathode, reducing power consumption and improving display uniformity.

[0132] An embodiment of the present disclosure also provides a display device. Figure 12 is a schematic diagram of a display device provided by an embodiment of the present disclosure. As shown in Figure 12, the display device 500 includes the above-mentioned display substrate 100. As a result, the display device has technical effects corresponding to the beneficial technical effects of the display substrate it includes. For example, the display device does not need to adopt a fully enclosed partition structure, so that the cathode is not completely isolated, thereby reducing the impedance of the cathode, reducing power consumption and improving display uniformity. On the other hand, since the display device can avoid crosstalk between adjacent sub-pixels through the above-mentioned first partition structure and second partition structure, the display device can increase pixel density while adopting a double-layer light-emitting (Tandem EL) design. Therefore, the display substrate can have the advantages of long life, low power consumption, high brightness, high resolution, etc.

[0133] For example, the display device can be a display device such as an organic light emitting diode display device, as well as any product or component with a display function, such as a television, digital camera, mobile phone, watch, tablet computer, laptop computer, navigator, etc. that includes the display device, but this embodiment is not limited to this.

[0134] There are a few points to note:

[0135] (1) The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure, and other structures may refer to conventional designs.

[0136] (2) Unless there is any conflict, the features of the same embodiment and different embodiments of the present disclosure may be combined with each other.

[0137] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A display substrate, comprising: substrate; as well as A plurality of sub-pixels are located on the base substrate, each of the sub-pixels includes a first electrode, a light-emitting functional layer, and a second electrode, the light-emitting functional layer includes a first light-emitting layer and a second light-emitting layer stacked together, and a charge generation layer located between the first light-emitting layer and the second light-emitting layer; The plurality of sub-pixels include a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel, and one of the first color sub-pixels and one of the second color sub-pixels are alternately arranged to form a sub-pixel pair. A first partition structure is provided between the sub-pixel pair and the adjacent third color sub-pixel, a second partition structure is provided between the first color sub-pixel and the second color sub-pixel in the sub-pixel pair, and the charge generation layer is disconnected at the position where the first partition structure and the second partition structure are located.

2. The display substrate according to claim 1, wherein The first partition structure includes: The first strip partition, The second strip-shaped partition portion is spaced apart from the first strip-shaped partition portion. The sub-pixel pair and the third color sub-pixel located on both sides of the first partition structure are arranged along a first direction, the first strip-shaped partition portion and the second strip-shaped partition portion both extend along a second direction, and the second direction intersects the first direction. A virtual straight line extending along the first direction overlaps with the third color sub-pixel and the second strip-shaped partition portion, but does not overlap with the first strip-shaped partition portion.

3. The display substrate according to claim 2, wherein: The first strip-shaped partition portion includes a plurality of first sub-partition portions and a first gap located between two adjacent first sub-partition portions, and the virtual straight line passes through the first gap.

4. The display substrate according to claim 3, wherein: The second strip-shaped partition portion includes a plurality of second sub-partition portions and a second notch located between two adjacent second sub-partition portions, and the first notch and the second notch are staggered in the second direction.

5. The display substrate according to claim 4, wherein: The first strip-shaped partition portion includes a plurality of first notches, and the second strip-shaped partition portion includes a plurality of second notches.

6. The display substrate according to claim 2, wherein: The first strip-shaped partition portion and the second strip-shaped partition portion are staggered in the second direction. The virtual straight line passes through a staggered area between the first strip-shaped partition portion and the second strip-shaped partition portion.

7. The display substrate according to any one of claims 2 to 6, wherein: The first strip-shaped partition portion and the second strip-shaped partition portion are spaced apart in the first direction, and a span of the first strip-shaped partition portion and the second strip-shaped partition portion in the second direction is greater than a size of the third color sub-pixel in the second direction.

8. The display substrate according to claim 7, wherein: The lengths of the first strip-shaped partition portion and the second strip-shaped partition portion in the second direction are greater than the size of the third color sub-pixel in the second direction.

9. The display substrate according to claim 7, wherein: The spans of the first strip-shaped partition portion and the second strip-shaped partition portion in the second direction are substantially equal.

10. The display substrate according to any one of claims 2 to 9, wherein: The first strip-shaped partitioning portions and the second strip-shaped partitioning portions in the two first partitioning structures located on both sides of the sub-pixel pair in the first direction are arranged in the same order.

11. The display substrate according to any one of claims 2 to 10, wherein: The first strip-shaped partitioning portions and the second strip-shaped partitioning portions in the two first partitioning structures located on both sides of the sub-pixel pair in the first direction are arranged in opposite orders.

12. The display substrate according to any one of claims 2 to 11, wherein: The distance between the sub-pixel pair and the first strip-shaped partition portion in the first direction is substantially equal to the distance between the third color sub-pixel and the second strip-shaped partition portion in the first direction.

13. The display substrate according to claim 1, wherein The first partition structure is a single strip-shaped partition portion, the second partition structure is a single strip-shaped partition portion, and the first partition structure and the second partition structure are connected. The sub-pixel pairs and the third color sub-pixel on both sides of the first partition structure are arranged along a first direction, the second partition structure extends along the first direction, and the first partition structure extends along a second direction intersecting the first direction.

14. The display substrate according to claim 13, wherein: The two first partition structures located on both sides of the sub-pixel pair in the first direction are both connected to the second partition structure between the first color sub-pixel and the second color sub-pixel in the sub-pixel pair.

15. The display substrate according to any one of claims 2 to 11, wherein: A size of the second partition structure in the first direction is larger than a size of the first color sub-pixel in the first direction.

16. The display substrate according to any one of claims 2 to 11, further comprising: The third partition structure is located between adjacent pairs of sub-pixels.

17. The display substrate according to claim 16, wherein: A size of the third partition structure in the first direction is larger than a size of the first color sub-pixel in the first direction.

18. The display substrate according to any one of claims 2 to 11, wherein: A plurality of the sub-pixel pairs are arranged along the second direction to form a first sub-pixel row, and a plurality of the third color sub-pixels are arranged along the second direction to form a second sub-pixel row. A plurality of first sub-pixel rows and a plurality of second sub-pixel rows are alternately arranged along the first direction.

19. The display substrate according to any one of claims 1 to 18, wherein: The first electrode is an anode, and the second electrode is a cathode.

20. A display device comprising the display substrate according to any one of claims 1 to 19.

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