Display substrate and display device

Abstract

A display substrate and a display device. The display substrate includes a base substrate, a pixel circuit layer and an anode layer; the pixel circuit layer includes a plurality of pixel driving circuits, and the anode layer includes a plurality of anodes; in each pixel driving circuit, the plurality of anodes include a first anode and a second anode arranged opposite to each other, the first anode includes a first main body and a first connecting part, the first anode also includes an extension part and an anode compensation part, the positive projection of the anode compensation part on the base substrate covers the thin film transistor of the pixel driving circuit connected to the first connecting part, the anode compensation part has a first point on a side away from the second center line, the first main body has a second point on the first side, the first anode and the lines connecting the first point and the second point enclose a notch area, and the area of ​​the notch area is greater than at least one of the area of ​​the anode compensation part and the area of ​​the first connecting part. The display substrate can improve light transmittance.

Description

[0001] This application claims priority to PCT patent application No. PCT / CN2020 / 086997 filed on April 26, 2020. The contents of the above-mentioned PCT patent application are hereby cited 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 (OLED) display technology has been increasingly used in various electronic devices due to its advantages such as self-luminescence, wide viewing angle, wide color gamut, high contrast, low power consumption, and high response speed.

[0004] On the other hand, with the continuous development of organic light-emitting diode display technology, people have put forward higher requirements on the performance of organic light-emitting diode display products such as power consumption, color deviation, brightness, and stability. Summary of the invention

[0005] The embodiments of the present disclosure provide a display substrate and a display device. The display substrate includes: a base substrate; a pixel circuit layer on the base substrate; an anode layer located on a side of the pixel circuit layer away from the base substrate, the pixel circuit layer includes a plurality of pixel driving circuits, the anode layer includes a plurality of anodes, the plurality of pixel driving circuits are arranged one-to-one with the plurality of anodes, the plurality of anodes include a plurality of anode groups arranged in an array along a first direction and a second direction, each of the anode groups includes a first anode and a second anode arranged opposite to each other in the second direction, the first anode includes a first main body and a first connecting portion, the first connecting portion is electrically connected to the pixel driving circuit corresponding to the first anode, the first anode also includes an extension portion and an anode compensation portion, the The positive projection of the anode compensation part on the base substrate covers a thin film transistor in the pixel driving circuit connected to the first connecting part, the first main body and the anode compensation part at least partially overlap in the first direction, the first center line of the anode compensation part extending along the second direction is located on the first side of the second center line of the first main body extending along the second direction, the anode compensation part has a first point on the side away from the second center line, the first main body has a second point on the first side, the first anode and the line connecting the first point and the second point form a notch area, and the area of ​​the notch area is greater than at least one of the area of ​​the anode compensation part and the area of ​​the first connecting part. The display substrate can improve the light transmittance of the display substrate by designing the shape of the first anode so that the extension of the first anode avoids the light-transmitting area of ​​the display substrate as much as possible.

[0006] At least one embodiment of the present disclosure provides a display substrate, which includes: a base substrate; a pixel circuit layer on the base substrate; an anode layer located on a side of the pixel circuit layer away from the base substrate, the pixel circuit layer includes a plurality of pixel driving circuits, the anode layer includes a plurality of anodes, the plurality of pixel driving circuits are arranged in a one-to-one correspondence with the plurality of anodes, the plurality of anodes include a plurality of anode groups arranged in an array along a first direction and a second direction, each of the anode groups includes a first anode and a second anode arranged opposite to each other in the second direction, the first anode includes a first main body portion and a first connecting portion, the first connecting portion is electrically connected to the pixel driving circuit corresponding to the first anode, the first anode also includes an extension portion and an anode The anode compensation portion is a positive projection of the anode compensation portion on the substrate covering a thin film transistor in the pixel driving circuit connected to the first connecting portion, the first main portion and the anode compensation portion at least partially overlap in the first direction, a first center line of the anode compensation portion extending along the second direction is located on a first side of a second center line of the first main portion extending along the second direction, the anode compensation portion has a first point on a side away from the second center line, the first main portion has a second point on the first side, the first anode and the line connecting the first point and the second point form a notch area, and the area of ​​the notch area is greater than at least one of the area of ​​the anode compensation portion and the area of ​​the first connecting portion.

[0007] For example, in a display substrate provided by an embodiment of the present disclosure, an area of ​​the notch region is greater than the sum of an area of ​​the anode compensation portion and an area of ​​the first connection portion.

[0008] For example, in a display substrate provided by an embodiment of the present disclosure, the anode compensation portion is located on the first side of a second center line of the first main portion extending along the second direction.

[0009] For example, in a display substrate provided in an embodiment of the present disclosure, the extension portion includes a first extension portion and a second extension portion, the first extension portion is located on a side of the first connecting portion away from the first main body portion, the second extension portion is respectively connected to the first extension portion and the anode compensation portion, and the first extension portion is located on a side of the second extension portion away from the anode compensation portion.

[0010] For example, in a display substrate provided in an embodiment of the present disclosure, a third center line of the first extension portion extending along the second direction is located on a second side of the second center line of the first main body portion extending along the second direction, and the second side is opposite to the first side.

[0011] For example, in a display substrate provided by an embodiment of the present disclosure, the first extension portion is located on the second side of the second center line of the first main body portion extending along the second direction.

[0012] For example, in a display substrate provided by an embodiment of the present disclosure, an orthographic projection of a line connecting the first point and the second point on the base substrate does not overlap with an orthographic projection of the first anode on the base substrate.

[0013] For example, in the display substrate provided in an embodiment of the present disclosure, a fourth center line of the first connection portion extending along the second direction is located on the first side of the second center line of the first main body portion.

[0014] For example, in a display substrate provided in an embodiment of the present disclosure, each pixel driving circuit includes a driving thin film transistor and a compensation thin film transistor, the drain of the driving thin film transistor and the source of the compensation thin film transistor are connected to a first node, and the orthographic projection of the anode compensation portion on the base substrate covers the first node of the pixel driving circuit connected to the first connection portion.

[0015] For example, in a display substrate provided in an embodiment of the present disclosure, a size of the first connecting portion in the first direction is smaller than a size of the first main portion in the first direction, and a size of the first extending portion in the first direction is smaller than a size of the first connecting portion in the first direction.

[0016] For example, in a display substrate provided in an embodiment of the present disclosure, each of the anode groups also includes a third anode and a fourth anode; in each of the anode groups, the first anode and the second anode form an anode pair, the third anode, the anode pair and the fourth anode are arranged in sequence along the first direction, and the first anode and the second anode are arranged in sequence along the second direction.

[0017] For example, in a display substrate provided in an embodiment of the present disclosure, the notch area includes a first notch located between the first main body and the anode compensation portion, the orthographic projection of the first notch on the base substrate includes a first edge and a second edge extending along the second direction, the first edge is connected to the orthographic projection of the first connecting portion on the base substrate, and the second edge is located on a line connecting the first point and the second point.

[0018] For example, in a display substrate provided in an embodiment of the present disclosure, an area of ​​an orthographic projection of the first notch on the base substrate is larger than 1 / 2 of an area of ​​an orthographic projection of the first connecting portion on the base substrate.

[0019] For example, in a display substrate provided in an embodiment of the present disclosure, the notch area also includes a second notch located between the first notch and the anode compensation portion, and the orthographic projection of the second notch on the base substrate includes a fourth edge and a fifth edge extending along the second direction, the fourth edge is connected to the orthographic projection of the first extension portion on the base substrate, and the fifth edge is also located on the line connecting the first point and the second point.

[0020] For example, in a display substrate provided in an embodiment of the present disclosure, an area of ​​an orthographic projection of the second notch on the base substrate is larger than 1 / 2 of an area of ​​an orthographic projection of the first connecting portion on the base substrate.

[0021] For example, in a display substrate provided in an embodiment of the present disclosure, the second anode includes a second main body portion and a second connecting portion, the second connecting portion is electrically connected to the pixel driving circuit corresponding to the second anode, the orthographic projection of the second main body portion on the base substrate covers the first node of the pixel driving circuit electrically connected to the second connecting portion, the first connecting portion and the second connecting portion are axially symmetrically arranged about a symmetry axis parallel to the first direction, the first connecting portion is on a side of the first main body portion away from the second main body portion, and the second connecting portion is on a side of the second main body portion away from the first main body portion.

[0022] For example, in a display substrate provided in an embodiment of the present disclosure, the second anode also includes a first supplementary portion, which protrudes from the second main portion in a direction close to the first anode, and the orthographic projection of the first supplementary portion on the base substrate at least partially overlaps with the orthographic projection of the channel region of the compensation thin film transistor in the pixel driving circuit electrically connected to the second connecting portion on the base substrate.

[0023] For example, in the display substrate provided in an embodiment of the present disclosure, each of the pixel driving circuits further includes a storage capacitor and a light-emitting control line, the storage capacitor includes a first electrode plate and a second electrode plate arranged in a direction perpendicular to the base substrate, the first main body portion is located on a side of the light-emitting control line in the pixel driving circuit connected to the first connecting portion away from the storage capacitor, and the anode compensation portion is located on a side of the light-emitting control line away from the first main body portion.

[0024] For example, in the display substrate provided in an embodiment of the present disclosure, each of the pixel driving circuits further includes a data line and a power line. In each of the pixel driving circuits, the orthographic projection of the second electrode plate on the base substrate, the orthographic projection of the light emitting control line on the base substrate, the data line and the power line form a first spacing area, and the orthographic projection of the first extension portion on the base substrate covers an area of ​​the first spacing area that is less than 1 / 2 of the total area of ​​the first spacing area.

[0025] For example, in the display substrate provided in an embodiment of the present disclosure, each of the pixel driving circuits further includes an initialization signal line, the orthographic projection of the light emitting control line in the pixel driving circuit corresponding to the first anode on the base substrate, the orthographic projection of the initialization signal line in the pixel driving circuit corresponding to the second anode on the base substrate, the data line and the power line form a second spacing area, and the orthographic projection of the first anode on the base substrate covers an area of ​​the second spacing area that is less than 2 / 3 of the total area of ​​the second spacing area.

[0026] For example, in a display substrate provided in one embodiment of the present disclosure, the third anode includes a third main body portion and a third connecting portion, and the third connecting portion is electrically connected to the pixel driving circuit corresponding to the third anode; the fourth anode includes a fourth main body portion and a fourth connecting portion, and the fourth connecting portion is electrically connected to the pixel driving circuit corresponding to the fourth anode.

[0027] For example, in the display substrate provided in one embodiment of the present disclosure, the fourth anode also includes a second supplementary portion, which protrudes from the fourth main portion in a direction close to the second anode, and the orthographic projection of the second supplementary portion on the base substrate at least partially overlaps with the orthographic projection of the channel region of the compensation thin film transistor in the pixel driving circuit electrically connected to the third connecting portion on the base substrate.

[0028] For example, in the display substrate provided in an embodiment of the present disclosure, the fourth anode also includes a third supplementary portion, which protrudes from the fourth main portion in a direction away from the second anode, and the orthographic projection of the third supplementary portion on the base substrate at least partially overlaps with the orthographic projection of the channel region of the compensation thin film transistor in the pixel driving circuit electrically connected to the first connecting portion on the base substrate.

[0029] For example, a display substrate provided by an embodiment of the present disclosure also includes: a pixel defining layer, located on a side of the anode layer away from the base substrate; and a light-emitting layer, located on a side of the anode layer away from the base substrate, the pixel defining layer includes a plurality of openings, the plurality of openings are arranged one-to-one corresponding to the plurality of anodes, each of the openings partially exposes the corresponding anode, the light-emitting layer includes a plurality of light-emitting portions, the plurality of light-emitting portions are arranged one-to-one corresponding to the plurality of openings, at least a portion of each of the light-emitting portions is located in the corresponding opening and covers the exposed portion of the corresponding anode.

[0030] For example, in a display substrate provided in an embodiment of the present disclosure, the plurality of openings are divided into a plurality of opening groups, each of the opening groups includes a first opening and a second opening, the plurality of light-emitting portions are divided into a plurality of light-emitting portion groups, each of the light-emitting portion groups includes a first light-emitting portion and a second light-emitting portion, an orthographic projection of the first opening on the base substrate falls within an orthographic projection of the first main portion on the base substrate, at least a portion of the first light-emitting portion is located in the first opening and covers an exposed portion of the first main portion, and a shape of an orthographic projection of the first main portion on the base substrate is similar to a shape of an orthographic projection of the first opening on the base substrate.

[0031] For example, in a display substrate provided in an embodiment of the present disclosure, the pixel circuit layer includes: a semiconductor layer, located on the substrate; and a first gate layer, located on a side of the semiconductor layer away from the substrate, the semiconductor layer includes a plurality of pixel driving units, which are arranged one by one corresponding to the plurality of anodes, each of the pixel driving units includes a first unit, a second unit, a third unit, a fourth unit, a fifth unit, a sixth unit and a seventh unit, the first unit includes a first channel region and a first source region and a first drain region located on both sides of the first channel region, the second unit includes a second channel region, and a first gate region is provided on the substrate; The first unit includes a first channel region and a second source region and a second drain region located on both sides of the second channel region, the third unit includes a third channel region and a third source region and a third drain region located on both sides of the third channel region, the fourth unit includes a fourth channel region and a fourth source region and a fourth drain region located on both sides of the fourth channel region, the fifth unit includes a fifth channel region and a fifth source region and a fifth drain region located on both sides of the fifth channel region, the sixth unit includes a sixth channel region and a sixth source region and a sixth drain region located on both sides of the sixth channel region, the seventh unit includes a seventh channel region and a seventh drain region located on both sides of the seventh channel region The seventh source region and the seventh drain region on both sides of the seventh channel region, the third source region, the first drain region and the fifth source region are connected to the first node, the sixth drain region is connected to the third drain region, the first source region, the second drain region and the fourth drain region are connected to the second node, the fifth drain region is connected to the seventh drain region, the first gate layer includes a reset signal line, a gate line, a first electrode block and a light emitting control line, the reset signal line overlaps with the seventh channel region and the sixth channel region to form a seventh thin film transistor with the seventh unit and the sixth unit and a sixth thin film transistor, the gate line overlaps with the third channel region and the second channel region respectively to form a third thin film transistor and a second thin film transistor with the third unit and the second unit, the first electrode block overlaps with the first channel region to form a first thin film transistor with the first unit, the light emitting control line overlaps with the fourth channel region and the fifth channel region to form a fourth thin film transistor and a fifth thin film transistor with the fourth unit and the fifth unit, the first thin film transistor is the driving thin film transistor, and the third thin film transistor is the compensation thin film transistor.

[0032] For example, in a display substrate provided in an embodiment of the present disclosure, the reset signal line, gate line and light emitting control line all extend along the first direction, and the reset signal line, gate line, first electrode block and light emitting control line are arranged along the second direction.

[0033] For example, in a display substrate provided in an embodiment of the present disclosure, the pixel circuit layer includes: a second gate layer, located on a side of the first gate layer away from the semiconductor layer; the second gate layer includes an initialization signal line and a second electrode block, the initialization signal line is connected to the seventh source region and the sixth source region, and the orthographic projection of the second electrode block on the base substrate at least partially overlaps with the orthographic projection of the first electrode block on the base substrate to form a storage capacitor.

[0034] For example, in the display substrate provided in one embodiment of the present disclosure, the pixel circuit layer also includes: a source-drain electrode layer, located on a side of the second gate layer away from the first gate layer, the source-drain electrode layer includes the data line and the power line, the second source region is connected to the data line, and the fourth source region is connected to the power line.

[0035] For example, in a display substrate provided in an embodiment of the present disclosure, the source-drain electrode layer further includes: a connecting block including a first end and a second end, the first end being connected to the drain region of the compensation thin film transistor, the second end being connected to the first electrode block,

[0036] The orthographic projection of the anode compensation portion on the base substrate covers the orthographic projection of the second end on the base substrate.

[0037] At least one embodiment of the present disclosure further provides a display device, which includes any one of the above display substrates. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] 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, but are not intended to limit the present disclosure.

[0039] Figure 1 A schematic plan view of a display substrate provided in one embodiment of the present disclosure;

[0040] Figure 2 A display substrate provided by an embodiment of the present disclosure Figure 1 Schematic diagram of the cross section along the midline AA;

[0041] Figure 3A A schematic plan view of an anode layer in a display substrate provided in one embodiment of the present disclosure;

[0042] Figure 3B A schematic plan view of a first anode and a second anode in a display substrate provided in one embodiment of the present disclosure;

[0043] Figure 3C A schematic plan view of an anode layer in another display substrate provided in an embodiment of the present disclosure;

[0044] Figures 4A-4D A schematic plan view of each functional film layer in a display substrate provided in one embodiment of the present disclosure;

[0045] Figure 5 An equivalent circuit diagram of a pixel driving circuit in a display substrate provided by an embodiment of the present disclosure;

[0046] Figure 6 A schematic plan view of another display substrate provided in accordance with an embodiment of the present disclosure; and

[0047] Figure 7 A schematic diagram of a display device provided in accordance with an embodiment of the present disclosure. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than 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.

[0049] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. The words "include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0050] With the popularization and application of organic light emitting diode display panels, the requirements for the light transmittance of the organic light emitting diode display panels are getting higher and higher. How to improve the light transmittance of the organic light emitting diode display panels has become an urgent problem to be solved.

[0051] The embodiment of the present disclosure provides a display substrate and a display device. The display substrate includes a base substrate; a pixel circuit layer on the base substrate; an anode layer located on a side of the pixel circuit layer away from the base substrate; the pixel circuit layer includes a plurality of pixel driving circuits; the anode layer includes a plurality of anodes, the plurality of pixel driving circuits are arranged one by one with the plurality of anodes, the plurality of anodes include a plurality of anode groups arranged in an array along a first direction and a second direction, each anode group includes a first anode and a second anode arranged opposite to each other in the second direction, the first anode includes a first main body and a first connecting part, the first connecting part is electrically connected to the pixel driving circuit corresponding to the first anode, the first anode also includes an extension part and an anode compensation part, the orthographic projection of the anode compensation part on the base substrate covers a thin film transistor in the pixel driving circuit connected to the first connecting part, the first main body and the anode compensation part at least partially overlap in the first direction, the first center line of the anode compensation part extending along the second direction is located on the first side of the second center line of the first main body extending along the second direction, the anode compensation part has a first point on the side away from the second center line, the first main body has a second point on the first side, the line connecting the first anode and the first point and the second point forms a notch area, and the area of ​​the notch area is greater than at least one of the area of ​​the anode compensation part and the area of ​​the first connecting part. The display substrate designs the shape of the first anode so that the extension of the first anode avoids the light-transmitting area of ​​the display substrate as much as possible, thereby improving the light transmittance of the display substrate.

[0052] The display substrate and the display device provided by the embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0053] Figure 1 A schematic plan view of a display substrate provided in one embodiment of the present disclosure; Figure 2 A display substrate provided by an embodiment of the present disclosure Figure 1 Schematic diagram of the cross section along the midline AA; Figure 3A A schematic plan view of an anode layer in a display substrate provided in one embodiment of the present disclosure; Figure 3B A schematic plan view of a first anode and a second anode in a display substrate provided in one embodiment of the present disclosure.

[0054] like Figure 1 , Figure 2 and Figure 3AAs shown, the display substrate 100 includes a base substrate 110, a pixel circuit layer 210 and an anode layer 170; the pixel circuit layer 210 is arranged on the base substrate 110, and the anode layer 170 is arranged on a side of the pixel circuit layer 210 away from the base substrate. The pixel circuit layer 210 includes a plurality of pixel driving circuits 215, and the anode layer 170 includes a plurality of anodes 175. The plurality of pixel driving circuits 215 and the plurality of anodes 175 are arranged in a one-to-one correspondence, that is, one pixel driving circuit 215 corresponds to one anode 175, and is electrically connected to the corresponding anode 175 to provide the corresponding anode 175 with an electrical signal for driving the sub-pixel to emit light.

[0055] like Figure 1 and Figure 3A As shown, the plurality of anodes 175 include a plurality of anode groups 1750 arranged in an array along the first direction and the second direction, and each anode group 1750 includes a first anode 1751 and a second anode 1752 arranged opposite to each other. The first anode 1751 includes a first main body portion 1751A and a first connecting portion 1751B, and the first connecting portion 1751B is electrically connected to the pixel driving circuit 215 corresponding to the first anode 1751, so that the pixel driving circuit 215 can apply an electrical signal for driving the sub-pixel to emit light to the first anode 1751 including the first main body portion 1751A through the first connecting portion 1751B.

[0056] like Figure 1 , Figure 3A and Figure 3B As shown, the first anode 1751 also includes an extension portion 1751F and an anode compensation portion 1751E, the orthographic projection of the anode compensation portion 1751E on the base substrate 110 covers a thin film transistor in the pixel driving circuit 215 connected to the first connecting portion 1751B, and the first main portion 1751A and the anode compensation portion 1751E at least partially overlap in the first direction, that is, the orthographic projection of the first main portion 1751A on a straight line extending along the first direction and the orthographic projection of the anode compensation portion 1751E on the straight line at least partially overlap. The first center line 701 extending along the second direction of the anode compensation portion 1751E is located on a first side of a second center line 702 extending along the second direction of the first main body portion 1751A, the anode compensation portion 1751E has a first point P1 on a side away from the second center line 702, the first main body portion 1751A has a second point P2 on the first side, the first anode 1751 and a line P12 connecting the first point P1 and the second point P2 form a notch area 450, and the area of ​​the notch area 450 is larger than at least one of the area of ​​the anode compensation portion 1751E and the area of ​​the first connecting portion 1751B.

[0057] In the display substrate provided by the embodiment of the present disclosure, the extension portion is used to connect the anode compensation portion to the first connection portion; the first center line of the anode compensation portion extending along the second direction is located on the first side of the second center line of the first main body portion extending along the second direction, and the area of ​​the notch region is larger than at least one of the area of ​​the anode compensation portion and the area of ​​the first connection portion, thereby reducing the overlapping area of ​​the extension portion and the light-transmitting area of ​​the pixel driving circuit. Therefore, the design of the first anode can make the extension portion of the first anode avoid the light-transmitting area of ​​the display substrate as much as possible, thereby improving the light transmittance of the display substrate.

[0058] In some examples, such as Figure 1 and Figure 3A As shown, in the notch area 450 , the transmittance of at least two of all the film layers between the base substrate 110 and the anode layer 170 of the display substrate is greater than 90%.

[0059] In some examples, such as Figure 1 and Figure 3A As shown, the area of ​​the notch region 450 is larger than the sum of the area of ​​the anode compensation portion 1751E and the area of ​​the first connection portion 1751B. Thus, the display substrate can further reduce the overlapping area between the extension portion and the light-transmitting area of ​​the pixel driving circuit, thereby further improving the light transmittance of the display substrate.

[0060] In some examples, such as Figure 1 and Figure 3A As shown, the anode compensation portion 1751E is located on the first side of the second center line of the first body portion 1751A extending along the second direction. In other words, the anode compensation portion 1751E is entirely located on the first side of the second center line of the first body portion 1751A extending along the second direction.

[0061] In some examples, such as Figure 1 and Figure 3A As shown, the orthographic projection of the notch area 450 on the base substrate 110 does not overlap with the orthographic projection of the first anode 1751 on the base substrate 110. In other words, the notch area 450 does not belong to the first anode, but is the area enclosed by the first anode and the line P12 connecting the first point P1 and the second point P2. Figure 1 and Figure 3AAs shown, the orthographic projection of the line P12 connecting the first point P1 and the second point P2 on the substrate 110 does not overlap with the orthographic projection of the first anode 1751 on the substrate 110. That is, the first point P1 is a point on the edge of the anode compensation portion 1751E away from the second center line 702, and there is no anode blocking the first main body portion 1751, while the second point P2 is a point on the edge of the first main body portion 1751A on the first side, and there is no anode blocking the anode compensation portion 1751E. It should be noted that, since the first point and the second point are points on the anode, the orthographic projection of the above-mentioned connecting line on the substrate does not overlap with the orthographic projection of the first anode on the substrate, including the case where the first point and the second point are on the edge of the orthographic projection of the first anode on the substrate.

[0062] In some examples, such as Figure 1 , Figure 3A and Figure 3B As shown, the distance between the first center line 701 of the anode compensation portion 1751E and the second center line 702 of the first body portion 1751A is greater than or equal to 1 / 2 of the width of the anode compensation portion 1751E in the first direction.

[0063] In some examples, such as Figure 1 , Figure 3A and Figure 3B As shown, the fourth center line 703 of the first connection portion 1751B extending along the second direction roughly coincides with the second center line 702 of the first main body portion 1751A. It should be noted that, due to the limitation of process precision, the above-mentioned "roughly coincident" includes the case where the fourth center line and the second center line completely coincide, and also includes the case where the distance between the fourth center line and the second center line is less than 1 / 10 of the width of the first connection portion in the first direction. Of course, the embodiments of the present disclosure include but are not limited to this, and the fourth center line of the first connection portion extending along the second direction may also be located on the first side of the first main body portion.

[0064] Figure 3C FIG. 1 is a plan view of another anode layer in a display substrate provided by an embodiment of the present disclosure. Figure 3C As shown, the fourth center line 703 of the first connection portion 1751B of the first anode 1751 extending along the second direction is also located on the first side of the second center line 702 of the first main body portion 1751A extending along the second direction. In other words, the fourth center line 703 and the first center line 701 of the anode compensation portion 1751E extending along the second direction are located on the same side of the second center line 702.

[0065] For example, the fourth center line 703 of the first connection portion 1751B is located on the side of the first center line 701 away from the second center line 702. Thus, the first anode can make the first connection portion avoid the light-transmitting area of ​​the display substrate as much as possible, thereby further improving the light transmittance of the display substrate.

[0066] In some examples, such as Figure 1 As shown, each pixel driving circuit 215 includes a driving thin film transistor T1 and a compensation thin film transistor T3, and the drain D1 of the driving thin film transistor T1 and the source S3 of the compensation thin film transistor T3 are connected to the first node N1. The orthographic projection of the anode compensation portion 1751E on the base substrate 110 covers the first node N1 of the pixel driving circuit 215 connected to the first connection portion 1751B, that is, the orthographic projection of the anode compensation portion 1751E on the base substrate 110 and the orthographic projection of the first node N1 of the pixel driving circuit 215 connected to the first connection portion 1751B on the base substrate 110 at least partially overlap. Due to factors such as the pixel arrangement structure, the shape and size of the first anode and the second anode, the first anode 1751 and the second anode 1752 belonging to the same anode pair 1758 are configured to drive the sub-pixels to emit light of the same color. Since the main body of the second anode 1752 covers the first node N1 of the corresponding pixel driving circuit 215, while the first main body 1751 does not cover the first node N1 of the corresponding pixel driving circuit 215, by adding the above-mentioned anode compensation portion 1751E to the first anode 1751, and making the positive projection of the anode compensation portion 1751E on the base substrate 110 cover the first node N1 of the pixel driving circuit 215 connected to the first connecting portion 1751B, the load between the first anode 1751 and the corresponding first node N1 and the load between the second anode 1752 and the corresponding first node N1 can be balanced, thereby improving the display quality.

[0067] In some examples, such as Figure 1As shown, the extension part 1751F also includes a first extension part 1751C and a second extension part 1751D. The first extension part 1751C is located on the side of the first connection part 1751B away from the first main body part 1751A, and the second extension part 1751D is connected to the first extension part 1751C and the anode compensation part 1751E respectively. The first extension part 1751C is located on the side of the second extension part 1751D away from the anode compensation part 1751E. Therefore, the first extension part is located on the side of the first connection part away from the first main body part. At this time, the first extension part extends from the first connection part instead of extending from the first main body part, which can reduce the area of ​​the first anode; in addition, the first extension part is located on the side of the second extension part away from the anode compensation part, which can make the first extension part closer to the edge of the corresponding pixel driving circuit, and reduce the overlapping area of ​​the light-transmitting area of ​​the first extension part and the pixel driving circuit. Therefore, the design of the first anode can make the first extension part and the second extension part of the first anode avoid the light-transmitting area of ​​the display substrate as much as possible, thereby improving the light transmittance of the display substrate.

[0068] For example, Figure 1 and Figure 2 As shown, the first node N1 may be a connection block 1542 disposed in the same layer as the data line 152 and the power line 151 in the pixel driving circuit 215. The specific configuration of the connection block 1542 will be described in detail in the following layered schematic diagram.

[0069] In some examples, such as Figure 1 and Figure 3A As shown, the third center line 703 of the first extension portion 1751C extending along the second direction is located on the second side of the second center line 702 of the first main body portion 1751A extending along the second direction, and the second side is opposite to the first side. Thus, the first anode can make the first extension portion avoid the light-transmitting area of ​​the display substrate as much as possible, thereby improving the light transmittance of the display substrate.

[0070] In some examples, such as Figure 1 and Figure 3A As shown, the first extension portion 1751C is located on the second side of the second center line 702 extending along the second direction from the first main body portion 1751A. That is, the first extension portion 1751C is entirely located on the second side of the second center line extending along the second direction from the first main body portion 1751A, thereby further reducing the overlapping area between the first extension portion and the light-transmitting area of ​​the display substrate, thereby further improving the light transmittance of the display substrate. In some examples, such as Figure 1As shown, the size of the first connecting portion 1751B in the first direction is smaller than the size of the first main body portion 1751A in the first direction, the size of the first extending portion 1751C in the first direction is smaller than the size of the first connecting portion 1751B in the first direction, and the first direction is perpendicular to the arrangement direction of the first main body portion 1751A, the first connecting portion 1751B and the first extending portion 1751C. Figure 1 As shown, the first anode 1751 and the second anode 1752 are arranged along the second direction, the second direction is perpendicular to the first direction, and the first direction and the second direction are both located on a plane parallel to the base substrate 110. Therefore, the area occupied by the first extension portion 1751C in the first direction is small, which can reduce the overlapping area of ​​the first extension portion and the light-transmitting area of ​​the pixel driving circuit, thereby improving the light transmittance of the display substrate.

[0071] In some examples, such as Figure 1 and Figure 3A As shown, each anode group 1750 further includes a third anode 1753 and a fourth anode 1754; in each anode group 1750, the first anode 1751 and the second anode 1752 form an anode pair 1758; the third anode 1753, the anode pair 1758 and the fourth anode 1754 are arranged in sequence along the first direction, and the first anode 1751 and the second anode 1752 are arranged in sequence along the second direction. That is, the first direction mentioned above can be the arrangement direction of the third anode, the anode pair and the fourth anode.

[0072] For example, the first direction may be the row direction of the sub-pixels in the display substrate, that is, the extension direction of the gate lines. Of course, the embodiments of the present disclosure include but are not limited to this, and the first direction may also be the column direction of the sub-pixels, that is, the extension direction of the data lines.

[0073] In some examples, such as Figure 1 , Figure 3A and Figure 3B As shown, the above-mentioned notch area 450 includes a first notch 451, which is located between the first main body 1751A and the anode compensation part 1751E. The orthographic projection of the first notch 451 on the base substrate 110 includes a first edge 401 and a second edge 402 extending along the second direction. The first edge 401 is connected to the orthographic projection of the first connecting part 1751B on the base substrate 110, and the second edge 402 is located on the line P12 connecting the first point P1 and the second point P2. In other words, the first anode 1751 has a notch between the first main body 1751A and the anode compensation part 1751E, and the area between the first main body 1751A and the anode compensation part 1751E just corresponds to the light-transmitting area of ​​the pixel driving circuit. Therefore, the display substrate can reduce the overlapping area of ​​the first anode and the light-transmitting area of ​​the pixel driving circuit, thereby improving the light transmittance.

[0074] For example, an edge of the first notch 451 close to the first main body portion 1751A is connected to the first main body portion 1751A, and an edge of the first notch 451 away from the first main body portion 1751A is flush with an edge of the first connecting portion 1751B away from the first main body portion 1751A.

[0075] In some examples, such as Figure 1 , Figure 3A and Figure 3B , the area of ​​the orthographic projection of the first notch 451 on the base substrate 110 is larger than 1 / 2 of the area of ​​the orthographic projection of the first connecting portion 1751B on the base substrate 110. At this time, the area of ​​the first notch is large, so that the display substrate can greatly reduce the overlapping area of ​​the first anode and the light-transmitting area of ​​the pixel driving circuit, thereby improving the light transmittance.

[0076] In some examples, such as Figure 1 , Figure 3A and Figure 3B The above-mentioned notch area 450 also includes a second notch 452, which is located between the first notch 451 and the anode compensation part 452. The orthographic projection of the second notch 452 on the base substrate 110 includes a fourth edge 404 and a fifth edge 405 extending along the second direction. The fourth edge 404 is connected to the orthographic projection of the first extension part 1751C on the base substrate 110, and the fifth edge 405 is also located on the line P12 connecting the first point P1 and the second point P2. In other words, the first extension part of the first anode is retracted inward by a certain distance relative to the edge of the first main body, so that the first anode can avoid the light-transmitting area of ​​the corresponding pixel driving circuit as much as possible, thereby increasing the light transmittance of the display substrate.

[0077] For example, the first notch 451 further includes an edge connected to the anode compensation portion 1851E, an edge connected to the second extension portion 1751D, and an edge connected to the second notch 452. At this time, the first notch 451 and the second notch 452 may constitute the notch area 450.

[0078] In some examples, such as Figure 1 , Figure 3A and Figure 3B , the area of ​​the orthographic projection of the second notch 452 on the base substrate 110 is larger than 1 / 2 of the area of ​​the orthographic projection of the first connection portion 1751B on the base substrate 110. At this time, the area of ​​the second notch is larger, so that the display substrate can greatly reduce the overlapping area of ​​the light-transmitting area of ​​the first anode and the pixel driving circuit, thereby improving the light transmittance.

[0079] In some examples, such as Figure 1 , Figure 3A and Figure 3B, the second anode 1752 includes a second main body portion 1752A and a second connection portion 1752B, the second connection portion 1752B is electrically connected to the pixel driving circuit 215 corresponding to the second anode 1752, and the orthographic projection of the second main body portion 1752A on the base substrate 110 covers the first node N1 of the pixel driving circuit 215 electrically connected to the second connection portion 1752B. At this time, since the orthographic projection of the anode compensation portion 1751E on the base substrate 110 covers the first node N1 of the pixel driving circuit 215 connected to the first connection portion 1751B, the first anode and the second anode both cover the first node of the corresponding pixel driving circuit, so that the loads of the two are the same, thereby improving the display quality.

[0080] In some examples, such as Figure 1 , Figure 3A and Figure 3B The first connecting portion 1751B and the second connecting portion 1752B are arranged axially symmetrically about a symmetry axis parallel to the first direction; the first main body 1751A and the second main body 1752A can also be arranged axially symmetrically about the symmetry axis. The first connecting portion 1751B is on a side of the first main body 1751A away from the second main body 1752A, and the second connecting portion 1752B is on a side of the second main body 1752A away from the first main body 1751A. For example, the planar shape of the first main body 1751A is approximately a pentagon, and the planar shape of the first connecting portion 1751B is a rounded rectangle extending from the vertex of the pentagon; the boundary line between the first extension portion 1751C and the first connecting portion 1751B can be a line parallel to the first direction and coincident with the edge of the first connecting portion 1751B away from the first main body 1751A; the boundary line between the first extension portion 1751C and the second extension portion 1751D can be a line between the endpoints of the two straight edges of the first extension portion 1751C extending along the second direction, and the line can be approximately parallel to the opening corresponding to the first anode. The hypotenuse of the opening can make the plan shape of the first extension portion 1751C be a trapezoid; the dividing line between the second extension portion 1751D and the anode compensation portion 1751E can include a first dividing line extending along the first direction and coinciding with the edge of the anode compensation portion 1751E close to the first main portion 1751A, and a second dividing line extending along the second direction and coinciding with the edge of the anode compensation portion 1751E close to the fourth anode 1754, and the intersection of the first dividing line and the second dividing line is the endpoint of the first dividing line and the second dividing line, so that the plan shape of the anode compensation portion 1751E can be roughly a rounded rectangle.

[0081] In some examples, such as Figure 1 and Figure 2As shown, each pixel driving circuit 215 also includes a storage capacitor Cst and a light-emitting control line 133, and the storage capacitor Cst includes a first electrode plate CE1 and a second electrode plate CE2 arranged in a direction perpendicular to the base substrate 110; the first main body 1751A is located on the side of the light-emitting control line 133 in the pixel driving circuit 215 connected to the first connecting portion 1751B away from the storage capacitor Cst, and the anode compensation portion 1751E is located on the side of the light-emitting control line 133 away from the first main body 1751A.

[0082] In some examples, such as Figure 1 and Figure 2 As shown, each pixel driving circuit 215 further includes a data line 152 and a power line 151. In each pixel driving circuit 215, the orthographic projection of the second electrode plate CE2 on the base substrate 110, the orthographic projection of the light emitting control line 133 on the base substrate 110, the data line 152 and the power line 151 enclose a first spacing area 610, and the orthographic projection of the first extension portion 1751C on the base substrate 110 covers an area of ​​the first spacing area 610 that is less than 1 / 2 of the total area of ​​the first spacing area 610. In the display substrate, the first spacing area between the second electrode plate and the light emitting control line is usually a light-transmitting area. Since the orthographic projection of the first extension portion on the base substrate covers an area of ​​the first spacing area that is less than 1 / 2 of the total area of ​​the first spacing area, the display substrate can effectively reduce the overlapping area of ​​the first anode and the corresponding light-transmitting area of ​​the pixel driving circuit, thereby improving the light transmittance of the display substrate.

[0083] For example, the area of ​​the first spacing region 610 covered by the orthographic projection of the first extension portion 1751C on the base substrate 110 may be smaller than 1 / 3 of the total area of ​​the first spacing region 610 .

[0084] In some examples, such as Figure 1 and Figure 2 As shown, each pixel driving circuit 215 further includes an initialization signal line 141, an orthographic projection of the light emitting control line 133 in the pixel driving circuit 215 corresponding to the first anode 1751 on the base substrate 110, an orthographic projection of the initialization signal line 141 in the pixel driving circuit 215 corresponding to the second anode 1752 on the base substrate 110, a data line 152 and a power line 151 enclose a second spacing area 620, and an orthographic projection of the first anode 1751 on the base substrate 110 covers an area of ​​the second spacing area 620 that is less than 2 / 3 of the total area of ​​the second spacing area 620. In the display substrate, the second spacing area is usually a light-transmitting area, and since the orthographic projection of the first anode on the base substrate covers an area of ​​the second spacing area that is less than 2 / 3 of the total area of ​​the second spacing area, the display substrate can effectively reduce the overlapping area of ​​the first anode and the corresponding light-transmitting area of ​​the pixel driving circuit, thereby improving the light transmittance of the display substrate.

[0085] For example, the orthographic projection of the first anode 1751 on the base substrate 110 covers an area of ​​the second spacing region 620 that is less than ½ of the total area of ​​the second spacing region 620 .

[0086] In some examples, such as Figure 2 As shown, the display substrate 100 further includes a pixel defining layer 190 and a light emitting layer 180; the pixel defining layer 190 is located on the side of the anode layer 170 away from the base substrate 110, and the light emitting layer 180 is located on the side of the anode layer 170 away from the base substrate 110. The pixel defining layer 190 includes a plurality of openings 195, which are arranged one-to-one with the plurality of anodes 175, and each opening 195 partially exposes the corresponding anode 175; the light emitting layer 180 includes a plurality of light emitting portions 185, which are arranged one-to-one with the plurality of openings 195, and at least a portion of each light emitting portion 185 is located in the corresponding opening 195 and covers the exposed portion of the corresponding anode 175.

[0087] In some examples, as shown in FIG. 3 , the plurality of openings 195 are divided into a plurality of opening groups 1950, each opening group 1950 includes a first opening 1951 and a second opening 1952, and the plurality of light-emitting portions 185 are divided into a plurality of light-emitting portion groups 1850, each light-emitting portion group 1850 includes a first light-emitting portion 1851 and a second light-emitting portion 1852; the orthographic projection of the first opening 1951 on the substrate 110 falls within the orthographic projection of the first main portion 1751A on the substrate 110, at least a portion of the first light-emitting portion 1851 is located in the first opening 1951 and covers the exposed portion of the first main portion 1751A, and the shape of the orthographic projection of the first main portion 1751A on the substrate 110 is similar to the shape of the orthographic projection of the first opening 1951 on the substrate 110.

[0088] For example, as shown in Figure 3, at least a portion of the second light-emitting portion 1852 is located in the second opening 1952 and covers the exposed portion of the second main body portion 1752A, and the shape of the orthographic projection of the second main body portion 1752A on the base substrate 110 is similar to the shape of the orthographic projection of the second opening 1952 on the base substrate 110.

[0089] For example, as shown in Figure 3, at least a portion of the third light-emitting portion 1853 is located in the third opening 1953 and covers the exposed portion of the third main body portion 1753A, and the shape of the orthographic projection of the third main body portion 1753A on the base substrate 110 is similar to the shape of the orthographic projection of the third opening 1953 on the base substrate 110.

[0090] For example, as shown in Figure 3, at least a portion of the fourth light-emitting portion 1854 is located in the fourth opening 1954 and covers the exposed portion of the fourth main body portion 1754A, and the shape of the orthographic projection of the fourth main body portion 1754A on the base substrate 110 is similar to the shape of the orthographic projection of the fourth opening 1954 on the base substrate 110.

[0091] For example, the first light emitting portion and the second light emitting portion are configured to emit light of the same color.

[0092] For example, the first light emitting unit is configured to emit green light, the third light emitting unit is configured to emit red light, and the fourth light emitting unit is configured to emit blue light. Of course, the embodiments of the present disclosure include but are not limited to this.

[0093] In some examples, as shown in FIG. 3 , the pixel circuit layer 210 includes a semiconductor layer 120 and a first gate layer 130 ; the semiconductor layer 120 is located on the base substrate 110 , and the first gate layer 130 is located on a side of the semiconductor layer 120 away from the base substrate 110 .

[0094] Figures 4A-4D A schematic plan view of functional film layers in a display substrate provided in one embodiment of the present disclosure. Figure 5 An equivalent circuit diagram of a pixel driving circuit in a display substrate provided by an embodiment of the present disclosure.

[0095] like Figure 4A and Figure 5 As shown, the semiconductor layer 120 includes a plurality of pixel driving units 125, which are arranged one by one corresponding to the plurality of anodes 175; each pixel driving unit 125 includes a first unit 1251, a second unit 1252, a third unit 1253, a fourth unit 1254, a fifth unit 1255, a sixth unit 1256 and a seventh unit 1257, the first unit 1251 includes a first channel region C1 and a first source region S1 and a first drain region D1 located on both sides of the first channel region C1, the second unit 1252 includes a second channel region C2 and a second source region S2 and a second drain region D2 located on both sides of the second channel region C2, the third unit 1253 includes a third channel region C1 and a second source region S2 and a second drain region D2 located on both sides of the second channel region C2, The fourth unit 1254 includes a fourth channel region C4 and a fourth source region S4 and a fourth drain region D4 located on both sides of the fourth channel region C4, the fifth unit 1255 includes a fifth channel region C5 and a fifth source region S5 and a fifth drain region D5 located on both sides of the fifth channel region C5, the sixth unit 1256 includes a sixth channel region C6 and a sixth source region S6 and a sixth drain region D6 located on both sides of the sixth channel region C6, and the seventh unit 1257 includes a seventh channel region C7 and a seventh source region S7 and a seventh drain region D7 located on both sides of the seventh channel region C7.

[0096] For example, Figure 4A and Figure 5 As shown, the third source region S3, the first drain region D1 and the fifth source region S5 are connected to the first node N1, the sixth drain region S6 is connected to the third drain region D3, the first source region S1, the second drain region D2 and the fourth drain region D4 are connected to the second node N2, and the fifth drain region D5 is connected to the seventh drain region D7.

[0097] For example, Figure 4B and Figure 5 As shown, the first gate layer 130 includes a reset signal line 131, a gate line 132, a first electrode block CE1 and a light emitting control line 133. The reset signal line 131 overlaps with the seventh channel region C7 and the sixth channel region C6 to form a seventh thin film transistor T7 and a sixth thin film transistor T6 with the seventh unit 1257 and the sixth unit 1256. The gate line 132 overlaps with the third channel region C3 and the second channel region C2 respectively to form a third thin film transistor T3 and a second thin film transistor T2 with the third unit 1253 and the second unit 1252. The first electrode block CE1 overlaps with the first channel region C1 to form a first thin film transistor T1 with the first unit 1251. The light emitting control line 133 overlaps with the fourth channel region C4 and the fifth channel region C5 to form a fourth thin film transistor T4 and a fifth thin film transistor T5 with the fourth unit 1254 and the fifth unit 1255. The first thin film transistor T1 is a driving thin film transistor, and the third thin film transistor T3 is a compensation thin film transistor.

[0098] In some examples, the reset signal line, the gate line, and the light emitting control line all extend along a first direction, and the reset signal line, the gate line, the first electrode block, and the light emitting control line are arranged along a second direction.

[0099] like Figure 4C and Figure 5 As shown, the pixel circuit layer 210 includes: a second gate layer 140, which is located on the side of the first gate layer 130 away from the semiconductor layer 120; the second gate layer 140 includes an initialization signal line 141 and a second electrode block CE2, the initialization signal line 141 is connected to the seventh source region S7 and the sixth source region S6, and the orthographic projection of the second electrode block CE2 on the base substrate 110 at least partially overlaps with the orthographic projection of the first electrode block CE1 on the base substrate 110 to form a storage capacitor Cst.

[0100] like Figure 4C and Figure 5 As shown, the second gate layer 140 further includes a conductive block 142. For example, the conductive block 142 may be connected to a power line, thereby reducing the resistance of the power line. For another example, the orthographic projection of the conductive block 142 on the base substrate 110 at least partially overlaps with the channel region of the compensation thin film transistor T3, thereby preventing light from directly irradiating the channel region of the compensation thin film transistor T3, thereby improving the stability of the compensation thin film transistor T3.

[0101] like Figure 4D and Figure 5 As shown, the pixel circuit layer 210 also includes: a source-drain electrode layer 150, which is located on the side of the second gate layer 140 away from the first gate layer 130, the source-drain electrode layer 150 includes a data line 152 and a power line 151, the second source region S2 is connected to the data line 152, and the fourth source region S4 is connected to the power line 151.

[0102] like Figure 4D and Figure 5 As shown, the source-drain electrode layer 210 further includes a first connection block 1541, a second connection block 1542 and a third connection block 1543. The first connection block 1541 is used to connect the initialization signal line 141 with the sixth source region S6 and the seventh source region S7; the second connection block 1542 is used to connect the third drain region D3 with the first electrode block CE1; the third connection block 1543 is connected to the fifth drain region D5, and can be used as a drain connected to the corresponding anode.

[0103] like Figure 4D and Figure 5 As shown, the second connecting block 1542 includes a first end 1542A and a second end 1542B, the first end 1542A is connected to the drain region D3 of the compensation thin film transistor T3, the second end 1542B is connected to the first electrode block CE1, and the orthographic projection of the anode compensation portion 1751E on the base substrate 110 covers the orthographic projection of the second end 1542B on the base substrate 110.

[0104] like Figure 5 As shown, the second source region S2 is connected to the data line 152; and the fourth source region S4 is connected to the power line 151. Thus, the first unit 121, the second unit 122, the third unit 123, the fourth unit 124, the fifth unit 125, the sixth unit 126, and the seventh unit 127 of the semiconductor layer 120 can form the first thin film transistor T1, the second thin film transistor T2, the third thin film transistor T3, the fourth thin film transistor T4, the fifth thin film transistor T5, the sixth thin film transistor T6, and the seventh thin film transistor T7 with the reset signal line 131 and the gate line 132.

[0105] The following will Figure 5A working mode of the pixel driving circuit shown in FIG. 1 is schematically described. First, when a reset signal is transmitted to the reset signal line 131 and the seventh thin film transistor T7 is turned on, the residual current flowing through the anode of each sub-pixel is discharged to the sixth thin film transistor T6 through the seventh thin film transistor T7, thereby suppressing the luminescence caused by the residual current flowing through the anode of each sub-pixel. Then, when a reset signal is transmitted to the reset signal line 131 and an initialization signal is transmitted to the initialization signal line 141, the sixth thin film transistor T6 is turned on, and the initialization voltage Vint is applied to the first gate of the first thin film transistor T1 and the first electrode block CE1 of the storage capacitor Cst through the sixth thin film transistor T6, so that the first gate and the storage capacitor Cst are initialized. The first gate initialization can turn on the first thin film transistor T1.

[0106] Subsequently, when a gate signal is transmitted to the gate line 132 and a data signal is transmitted to the data line 152, the second thin film transistor T2 and the third thin film transistor T3 are both turned on, and the data voltage Vd is applied to the first gate through the second thin film transistor T2 and the third thin film transistor T3. At this time, the voltage applied to the first gate is the compensation voltage Vd+Vth, and the compensation voltage applied to the first gate is also applied to the first electrode block CE1 of the storage capacitor Cst.

[0107] Subsequently, the power line 151 applies the driving voltage Vel to the second electrode block CE2 of the storage capacitor Cst, and applies the compensation voltage Vd+Vth to the first electrode block CE1, so that the charge corresponding to the difference between the voltages respectively applied to the two electrodes of the storage capacitor Cst is stored in the storage capacitor Cst, and the first thin film transistor T1 is turned on for a predetermined time.

[0108] Subsequently, when an emission control signal is applied to the light emitting control line 133, the fourth thin film transistor T4 and the fifth thin film transistor T5 are both turned on, so that the fourth thin film transistor T4 applies the driving voltage Vel to the fifth thin film transistor T5. When the driving voltage Vel passes through the first thin film transistor T1 turned on by the storage capacitor Cst, the driving current Id corresponding to the difference between the driving voltage Vel and the voltage applied to the first gate through the storage capacitor Cst flows through the first drain region D3 of the first thin film transistor T1, and the driving current Id is applied to each sub-pixel through the fifth thin film transistor T5, so that the light emitting layer of each sub-pixel emits light.

[0109] Figure 6 FIG. 1 is a schematic plan view of another display substrate provided by an embodiment of the present disclosure. Figure 6As shown, the second anode 1752 also includes a first supplementary portion 1752C, which protrudes from the second main portion 1752A in a direction close to the first anode 1751, and the orthographic projection of the first supplementary portion 1752C on the base substrate 110 at least partially overlaps with the orthographic projection of the channel region of the compensation thin film transistor T3 in the pixel driving circuit 215 electrically connected to the second connecting portion 1752B on the base substrate 110.

[0110] In the display substrate provided in this example, the pixel driving circuit adopts a 7T1C pixel driving structure. In the light-emitting stage, the stability of the driving thin film transistor T1 directly affects the long-term light-emitting stability of the organic light-emitting diode display device; in the charging stage, the charging voltage on the gate of the driving thin film transistor T1 is related to the state of the compensation thin film transistor T3. Generally, thin film transistors are particularly sensitive to light. When the thin film transistor (especially the channel region) is exposed to light, it is easy to cause the characteristics of the thin film transistor to drift, affecting the normal operation of the pixel driving circuit. The display substrate is provided with a first supplementary part on the second anode, and the positive projection of the first supplementary part on the base substrate overlaps at least partially with the positive projection of the channel region of the compensation thin film transistor in the pixel driving circuit electrically connected to the second connecting part on the base substrate. Therefore, the display substrate can shield the corresponding channel region of the compensation thin film transistor through the first supplementary part, thereby improving the stability and life of the compensation thin film transistor, and further improving the long-term light-emitting stability and life of the display substrate.

[0111] It should be noted that when the compensation thin film transistor T3 has a dual-gate structure, the channel region of the compensation thin film transistor T3 includes two channel regions and a common electrode between the two channel regions. Figure 2 As shown, the compensation thin film transistor T3 may be a thin film transistor with a dual-gate structure, thereby improving the reliability of the compensation thin film transistor. The channel region of the compensation thin film transistor T3 includes a first channel region C31 and a second channel region C32 that are spaced apart, and the compensation thin film transistor T3 also includes a common electrode SE located between the first channel region C31 and the second channel region C32. The orthographic projection of the common electrode SE of the compensation thin film transistor T3 on the base substrate 110 at least partially overlaps with the first supplementary portion 1742C. Thus, the first supplementary portion may partially or completely block the common electrode SE of the compensation thin film transistor T3, thereby further improving the stability and life of the compensation thin film transistor, and further improving the long-term luminous stability and life of the display substrate.

[0112] In some examples, such as Figure 1 and Figure 6As shown, the third anode 1753 includes a third main body portion 1753A and a third connecting portion 1753B, and the third connecting portion 1753B is electrically connected to the pixel driving circuit 215 corresponding to the third anode 1753; the fourth anode 1754 includes a fourth main body portion 1754A and a fourth connecting portion 1754B, and the fourth connecting portion 1754B is electrically connected to the pixel driving circuit 215 corresponding to the fourth anode 1754.

[0113] In some examples, such as Figure 6 As shown, the fourth anode 1754 also includes a second supplementary portion 1754C, which protrudes from the fourth main body 1754A in a direction close to the second anode 1752; for example, the second supplementary portion 1754C is located on the side of the fourth connecting portion 1754B close to the fourth main body 1754A in the second direction; the orthographic projection of the second supplementary portion 1754C on the base substrate 110 overlaps at least partially with the orthographic projection of the channel region of the compensation thin film transistor T3 in the pixel driving circuit 215 electrically connected to the third connecting portion 1753B on the base substrate 110. Thus, the display substrate can shield the channel region of the compensation thin film transistor corresponding to the third anode through the second supplementary portion, thereby improving the stability and life of the compensation thin film transistor, and further improving the long-term luminous stability and life of the display substrate. Similarly, when the compensation thin film transistor T3 is a dual-gate structure, the channel region of the compensation thin film transistor T3 includes two channel regions and a common electrode between the two channel regions.

[0114] In some examples, such as Figure 6 As shown, the fourth anode 1754 further includes a third supplementary portion 1754D, which protrudes from the fourth main body portion 1754A in a direction away from the second anode 1752, and the orthographic projection of the third supplementary portion 1754D on the base substrate 110 at least partially overlaps with the orthographic projection of the channel region of the compensation thin film transistor T3 in the pixel driving circuit 215 electrically connected to the first connecting portion 1751B on the base substrate 110. Thus, the display substrate can shield the channel region of the compensation thin film transistor corresponding to the first anode through the third supplementary portion, thereby improving the stability and life of the compensation thin film transistor, and further improving the long-term luminous stability and life of the display substrate. Similarly, when the compensation thin film transistor T3 is a dual-gate structure, the channel region of the compensation thin film transistor T3 includes two channel regions and a common electrode between the two channel regions.

[0115] At least one embodiment of the present disclosure further provides a display device. Figure 7 Schematic diagram of a display device provided by an embodiment of the present disclosure. Figure 7As shown, the display device 800 includes any of the above display substrates 100. Thus, the display device has beneficial effects corresponding to the beneficial effects of the display substrate, for example, the display device has a higher light transmittance. In addition, the display device can improve the stability and life of the compensation thin film transistor, thereby improving the long-term light emission stability and life of the display substrate.

[0116] For example, the display device may be an electronic product with a display function, such as a television, a computer, a laptop computer, a tablet computer, a mobile phone, a navigator, an electronic photo frame, etc.

[0117] There are a few points to note:

[0118] (1) In the drawings of the embodiments of the present disclosure, only the structures related to the embodiments of the present disclosure are involved, and other structures can refer to the general design.

[0119] (2) In the absence of conflict, features in the same embodiment or in different embodiments of the present disclosure may be combined with each other.

[0120] The above description is merely an exemplary embodiment of the present disclosure and is not intended to limit the protection scope of the present disclosure. The protection scope of the present disclosure is determined by the appended claims.

Claims

1. A display substrate, include: substrate substrate; A pixel circuit layer, on the base substrate; an anode layer, located on a side of the pixel circuit layer away from the substrate, The pixel circuit layer includes a plurality of pixel driving circuits, the anode layer includes a plurality of anodes, and the plurality of pixel driving circuits are arranged in a one-to-one correspondence with the plurality of anodes. The plurality of anodes include a plurality of anode groups arranged in an array along a first direction and a second direction, each of the anode groups includes a first anode and a second anode arranged opposite to each other in the second direction, the first anode includes a first main body and a first connecting portion, the first connecting portion is electrically connected to the pixel driving circuit corresponding to the first anode, The first anode further includes an extension portion and an anode compensation portion, wherein the orthographic projection of the anode compensation portion on the substrate covers a thin film transistor in the pixel driving circuit connected to the first connection portion. The first main body and the anode compensation portion at least partially overlap in the first direction, a first center line of the anode compensation portion extending in the second direction is located on a first side of a second center line of the first main body extending in the second direction, the anode compensation portion has a first point on a side away from the second center line, and the first main body has a second point on the first side, The first anode and a line connecting the first point and the second point form a notch area, and an area of ​​the notch area is larger than at least one of an area of ​​the anode compensation portion and an area of ​​the first connection portion.

2. The display substrate according to claim 1, in, The area of ​​the notch region is greater than the sum of the area of ​​the anode compensation portion and the area of ​​the first connecting portion.

3. The display substrate according to claim 1, in, The anode compensation portion is located on the first side of a second center line of the first body portion extending along the second direction.

4. The display substrate according to claim 1, in, The extension portion includes a first extension portion and a second extension portion, the first extension portion is located on a side of the first connecting portion away from the first main body portion, the second extension portion is respectively connected to the first extension portion and the anode compensation portion, and the first extension portion is located on a side of the second extension portion away from the anode compensation portion.

5. The display substrate according to claim 4, in, A third center line of the first extension portion extending along the second direction is located on a second side of the second center line of the first main body portion extending along the second direction, and the second side is opposite to the first side.

6. The display substrate according to claim 5, in, The first extending portion is located on the second side of the second center line of the first main body portion extending along the second direction.

7. The display substrate according to any one of claims 1 to 6, in, An orthographic projection of a line connecting the first point and the second point on the substrate does not overlap with an orthographic projection of the first anode on the substrate.

8. The display substrate according to any one of claims 1 to 6, in, A fourth center line of the first connecting portion extending along the second direction is located on the first side of the second center line of the first main body portion.

9. The display substrate according to any one of claims 1 to 6, in, Each of the pixel driving circuits comprises a driving thin film transistor and a compensation thin film transistor, wherein the drain of the driving thin film transistor and the source of the compensation thin film transistor are connected to a first node, The orthographic projection of the anode compensation portion on the base substrate covers the first node of the pixel driving circuit connected to the first connecting portion.

10. The display substrate according to any one of claims 4 to 6, in, The size of the first connecting portion in the first direction is smaller than the size of the first main body portion in the first direction, and the size of the first extending portion in the first direction is smaller than the size of the first connecting portion in the first direction.

11. The display substrate according to claim 10, in, Each of the anode groups also includes a third anode and a fourth anode; in each of the anode groups, the first anode and the second anode form an anode pair, the third anode, the anode pair and the fourth anode are arranged in sequence along the first direction, and the first anode and the second anode are arranged in sequence along the second direction.

12. The display substrate according to claim 11, in, The notch area includes a first notch located between the first main body portion and the anode compensation portion, The orthographic projection of the first notch on the base substrate includes a first edge and a second edge extending along the second direction, the first edge is connected to the orthographic projection of the first connecting portion on the base substrate, and the second edge is located on the line connecting the first point and the second point.

13. The display substrate according to claim 12, in, An area of ​​an orthographic projection of the first notch on the base substrate is larger than 1 / 2 of an area of ​​an orthographic projection of the first connecting portion on the base substrate.

14. The display substrate according to claim 12, in, The notch area further includes a second notch located between the first notch and the anode compensation portion. The orthographic projection of the second notch on the base substrate includes a fourth edge and a fifth edge extending along the second direction, the fourth edge is connected to the orthographic projection of the first extension portion on the base substrate, and the fifth edge is also located on the line connecting the first point and the second point.

15. The display substrate according to claim 14, in, An area of ​​an orthographic projection of the second notch on the base substrate is larger than 1 / 2 of an area of ​​an orthographic projection of the first connecting portion on the base substrate.

16. The display substrate according to claim 9, in, The second anode includes a second main body and a second connecting portion, the second connecting portion is electrically connected to the pixel driving circuit corresponding to the second anode, and the orthographic projection of the second main body on the base substrate covers the first node of the pixel driving circuit electrically connected to the second connecting portion. The first connection portion and the second connection portion are axially symmetrically arranged about a symmetry axis parallel to the first direction, the first connection portion is on a side of the first main body away from the second main body, and the second connection portion is on a side of the second main body away from the first main body.

17. The display substrate according to claim 16, in, The second anode further includes a first supplementary portion, which protrudes from the second main body portion in a direction close to the first anode. The orthographic projection of the first supplementary portion on the base substrate at least partially overlaps with the orthographic projection of the channel region of the compensation thin film transistor in the pixel driving circuit electrically connected to the second connecting portion on the base substrate.

18. The display substrate according to any one of claims 1 to 6, in, Each of the pixel driving circuits further includes a storage capacitor and a light emitting control line, wherein the storage capacitor includes a first electrode plate and a second electrode plate arranged in a direction perpendicular to the substrate. The first main body is located on a side of the light emitting control line in the pixel driving circuit connected to the first connecting part away from the storage capacitor, and the anode compensation part is located on a side of the light emitting control line away from the first main body.

19. The display substrate according to claim 18, in, Each of the pixel driving circuits also includes a data line and a power line. In each of the pixel driving circuits, the orthographic projection of the second electrode plate on the base substrate, the orthographic projection of the light-emitting control line on the base substrate, the data line and the power line form a first spacing area, and the orthographic projection of the first extension portion on the base substrate covers an area of ​​the first spacing area that is less than 1 / 2 of the total area of ​​the first spacing area.

20. The display substrate according to claim 19, in, Each of the pixel driving circuits also includes an initialization signal line, and the orthographic projection of the light emitting control line in the pixel driving circuit corresponding to the first anode on the substrate, the orthographic projection of the initialization signal line in the pixel driving circuit corresponding to the second anode on the substrate, the data line and the power line form a second spacing area, and the orthographic projection of the first anode on the substrate covers an area of ​​the second spacing area that is less than 2 / 3 of the total area of ​​the second spacing area.

21. The display substrate according to claim 11, in, The third anode includes a third main body portion and a third connecting portion, and the third connecting portion is electrically connected to the pixel driving circuit corresponding to the third anode; The fourth anode includes a fourth main body portion and a fourth connecting portion, and the fourth connecting portion is electrically connected to the pixel driving circuit corresponding to the fourth anode.

22. The display substrate according to claim 21, in, The fourth anode further includes a second supplementary portion protruding from the fourth main portion in a direction close to the second anode, Each of the pixel driving circuits comprises a driving thin film transistor and a compensation thin film transistor, wherein the drain of the driving thin film transistor and the source of the compensation thin film transistor are connected to a first node, The orthographic projection of the second supplementary portion on the base substrate at least partially overlaps with the orthographic projection of the channel region of the compensation thin film transistor in the pixel driving circuit electrically connected to the third connecting portion on the base substrate.

23. The display substrate according to claim 21, in, The fourth anode further includes a third supplementary portion protruding from the fourth main portion in a direction away from the second anode, Each of the pixel driving circuits comprises a driving thin film transistor and a compensation thin film transistor, wherein the drain of the driving thin film transistor and the source of the compensation thin film transistor are connected to a first node, The orthographic projection of the third supplementary portion on the base substrate at least partially overlaps with the orthographic projection of the channel region of the compensation thin film transistor in the pixel driving circuit electrically connected to the first connecting portion on the base substrate.

24. The display substrate according to any one of claims 1 to 6, further comprising: include: A pixel defining layer, located on a side of the anode layer away from the substrate; as well as The light-emitting layer is located on a side of the anode layer away from the substrate. The pixel defining layer includes a plurality of openings, the plurality of openings are arranged corresponding to the plurality of anodes one by one, and each of the openings partially exposes the corresponding anode. The light-emitting layer includes a plurality of light-emitting parts, and the plurality of light-emitting parts are arranged in one-to-one correspondence with the plurality of openings. At least a portion of each of the light-emitting parts is located in the corresponding opening and covers the corresponding exposed portion of the anode.

25. The display substrate according to claim 24, in, The plurality of openings are divided into a plurality of opening groups, each of the opening groups includes a first opening and a second opening, the plurality of light emitting portions are divided into a plurality of light emitting portion groups, each of the light emitting portion groups includes a first light emitting portion and a second light emitting portion, The orthographic projection of the first opening on the base substrate falls within the orthographic projection of the first main body on the base substrate, at least a portion of the first light-emitting portion is located in the first opening and covers the exposed portion of the first main body, and the shape of the orthographic projection of the first main body on the base substrate is similar to the shape of the orthographic projection of the first opening on the base substrate.

26. The display substrate according to claim 18, in, The pixel circuit layer comprises: A semiconductor layer is located on the substrate; and A first gate layer is located on a side of the semiconductor layer away from the substrate. Wherein, the semiconductor layer includes a plurality of pixel driving units, which are arranged one by one corresponding to the plurality of anodes, and each of the pixel driving units includes a first unit, a second unit, a third unit, a fourth unit, a fifth unit, a sixth unit and a seventh unit, the first unit includes a first channel region and a first source region and a first drain region located on both sides of the first channel region, the second unit includes a second channel region and a second source region and a second drain region located on both sides of the second channel region, the third unit includes a third channel region and a third source region and a third drain region located on both sides of the third channel region, the fourth unit includes a fourth channel region and a fourth source region and a fourth drain region located on both sides of the fourth channel region, the fifth unit includes a fifth channel region and a fifth source region and a fifth drain region located on both sides of the fifth channel region, the sixth unit includes a sixth channel region and a sixth source region and a sixth drain region located on both sides of the sixth channel region, the seventh unit includes a seventh channel region and a seventh source region and a seventh drain region located on both sides of the seventh channel region, The third source region, the first drain region, and the fifth source region are connected to a first node, the sixth drain region is connected to the third drain region, the first source region, the second drain region, and the fourth drain region are connected to a second node, and the fifth drain region is connected to the seventh drain region, The first gate layer includes a reset signal line, a gate line, a first electrode block and a light emitting control line. The reset signal line overlaps with the seventh channel region and the sixth channel region to form a seventh thin film transistor and a sixth thin film transistor with the seventh unit and the sixth unit. The gate line overlaps with the third channel region and the second channel region respectively to form a third thin film transistor and a second thin film transistor with the third unit and the second unit. The first electrode block overlaps with the first channel region to form a first thin film transistor with the first unit. The light emitting control line overlaps with the fourth channel region and the fifth channel region to form a fourth thin film transistor and a fifth thin film transistor with the fourth unit and the fifth unit. The first thin film transistor is a driving thin film transistor, and the third thin film transistor is a compensation thin film transistor.

27. The display substrate according to claim 26, in, The reset signal line, the gate line and the light emitting control line all extend along the first direction, and the reset signal line, the gate line, the first electrode block and the light emitting control line are arranged along the second direction.

28. The display substrate according to claim 26, in, The pixel circuit layer comprises: A second gate layer, located on a side of the first gate layer away from the semiconductor layer; The second gate layer includes an initialization signal line and a second electrode block, the initialization signal line is connected to the seventh source region and the sixth source region, and the orthographic projection of the second electrode block on the base substrate at least partially overlaps with the orthographic projection of the first electrode block on the base substrate to form a storage capacitor.

29. The display substrate according to claim 28, in, The pixel circuit layer further includes: a source-drain electrode layer, located on a side of the second gate layer away from the first gate layer, Wherein, the source-drain electrode layer includes a data line and a power line, the second source region is connected to the data line, and the fourth source region is connected to the power line.

30. The display substrate according to claim 29, in, The source-drain electrode layer further comprises: a connecting block, comprising a first end and a second end, wherein the first end is connected to the drain region of the compensation thin film transistor, and the second end is connected to the first electrode block, The orthographic projection of the anode compensation portion on the base substrate covers the orthographic projection of the second end on the base substrate.

31. A display device comprising the display substrate according to any one of claims 1-30.

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