Display substrate and display device

Abstract

A display substrate comprises: a substrate, a circuit structure layer located on one side of the substrate, and a light-emitting structure layer located on a side of the circuit structure layer away from the substrate. The circuit structure layer comprises a plurality of first pixel circuits located in a second display area. The light-emitting structure layer comprises a plurality of first light-emitting elements located in the first display area. The plurality of first light-emitting elements comprise: a plurality of first light-emitting elements emitting first color light and a plurality of first light-emitting elements emitting second color light. The plurality of first light-emitting elements emitting second color light in at least one group of first light-emitting elements comprise: at least one first light-emitting element of a first type and at least one first light-emitting element of a second type. In at least one group of first light-emitting elements, the first pixel circuit electrically connected to at least one first light-emitting element of the first type is located on a side of the first pixel circuit electrically connected to all first light-emitting elements emitting first color light that is close to the first display area.

Description

Technical Field

[0001] This article relates to but is not limited to the field of display technology, and in particular to a display substrate and a display device. Background Art

[0002] Organic light-emitting diodes (OLEDs) and quantum-dot light-emitting diodes (QLEDs) are active light-emitting display devices with advantages such as self-luminescence, wide viewing angles, high contrast, low power consumption, extremely fast response times, thinness, flexibility, and low cost. Under-display camera technology is a new technology designed to increase the screen-to-body ratio of displays. Summary of the Invention

[0003] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0004] Embodiments of the present disclosure provide a display substrate and a display device.

[0005] In one aspect, embodiments of the present disclosure provide a display substrate comprising: a first display area and a second display area located at least to one side of the first display area. The display substrate comprises: a substrate, a circuit structure layer located on one side of the substrate, and a light-emitting structure layer located on a side of the circuit structure layer away from the substrate. The circuit structure layer comprises a plurality of first pixel circuits located in the second display area. The light-emitting structure layer comprises a plurality of first light-emitting elements located in the first display area. At least one of the plurality of first pixel circuits is electrically connected to at least one of the plurality of first light-emitting elements and configured to drive the at least one first light-emitting element to emit light. The plurality of first light-emitting elements comprises: a plurality of first light-emitting elements that emit a first color of light and a plurality of first light-emitting elements that emit a second color of light, wherein the first color of light is different from the second color of light. The plurality of first light-emitting elements comprises: a plurality of groups of first light-emitting elements, wherein the plurality of first light-emitting elements in each group of first light-emitting elements are arranged along a first direction, and the plurality of first light-emitting elements in the plurality of groups of first light-emitting elements are arranged along a second direction, with the first direction intersecting the second direction. The plurality of first light-emitting elements in at least one group of first light-emitting elements that emit the second color of light comprise: at least one first light-emitting element of a first type and at least one first light-emitting element of a second type. In at least one group of first light-emitting elements, the first pixel circuit electrically connected to at least one first-type first light-emitting element is located on a side of the first pixel circuit electrically connected to all first light-emitting elements emitting first color light that is close to the first display area; and the first pixel circuit electrically connected to at least one second-type first light-emitting element is located on a side of the first pixel circuit electrically connected to all first light-emitting elements emitting first color light that is away from the first display area.

[0006] In some exemplary embodiments, the first pixel circuit electrically connected to the at least one second-type first light-emitting element in the at least one group of first light-emitting elements is a second-type first pixel circuit, and the first pixel circuit electrically connected to the at least one first-type first light-emitting element is a third-type first pixel circuit. Among the first pixel circuits electrically connected to the at least one group of first light-emitting elements, the number of the third-type first pixel circuits is less than or equal to the number of the second-type first pixel circuits.

[0007] In some exemplary embodiments, a plurality of first pixel circuits electrically connected to all first light emitting elements emitting first color light in the at least one group of first light emitting elements are arranged sequentially along the first direction.

[0008] In some exemplary embodiments, the first type of first light-emitting elements in the at least one group of first light-emitting elements are located on a side of the second type of first light-emitting elements close to the second display area.

[0009] In some exemplary embodiments, the first type of first light-emitting elements in the at least one group of first light-emitting elements are located on a side of the second type of first light-emitting elements away from the second display area.

[0010] In some exemplary embodiments, in at least one group of first light-emitting elements, the first pixel circuit electrically connected to the first light-emitting element emitting the first color light close to the second display area is located on a side of the first pixel circuit electrically connected to the first light-emitting element emitting the first color light away from the second display area close to the first display area.

[0011] In some exemplary embodiments, in at least one group of first light-emitting elements, a first pixel circuit electrically connected to a first type of first light-emitting element proximate to the second display area is located on a side of a first pixel circuit electrically connected to a first type of first light-emitting element distal to the second display area that is proximate to the first display area. A first pixel circuit electrically connected to a second type of first light-emitting element proximate to the second display area is located on a side of a first pixel circuit electrically connected to a second type of first light-emitting element distal to the second display area that is proximate to the first display area.

[0012] In some exemplary embodiments, the display substrate further comprises: a plurality of conductive layers positioned between the circuit structure layer and the light-emitting structure layer, the plurality of conductive layers comprising a plurality of conductive lines; and the at least one first pixel circuit is electrically connected to the at least one first light-emitting element via at least one conductive line. The plurality of first light-emitting elements emitting second color light in the first display area comprise: a plurality of blue first light-emitting elements and a plurality of red first light-emitting elements. The plurality of conductive lines electrically connected to the plurality of blue first light-emitting elements are positioned in the same conductive layer, or in two adjacent conductive layers. The plurality of conductive lines electrically connected to the plurality of red first light-emitting elements are positioned in the same conductive layer, or in two adjacent conductive layers.

[0013] In some exemplary embodiments, the plurality of conductive layers include: a first transparent conductive layer, a second transparent conductive layer, and a third transparent conductive layer sequentially disposed along a side away from the substrate.

[0014] In some exemplary embodiments, the plurality of conductive lines electrically connected to the plurality of red first light-emitting elements are located in the second transparent conductive layer, and the plurality of conductive lines electrically connected to the plurality of blue first light-emitting elements are located in the third transparent conductive layer.

[0015] In some exemplary embodiments, in the first direction from the first display area to the second display area, the multiple conductive lines electrically connected to the multiple red first light-emitting elements in the at least one group of first light-emitting elements are alternately located in the second transparent conductive layer and the third transparent conductive layer; the multiple conductive lines electrically connected to the multiple blue first light-emitting elements are alternately located in the second transparent conductive layer and the third transparent conductive layer.

[0016] In some exemplary embodiments, the order in which the multiple conductive lines electrically connected to the multiple red first light-emitting elements in the at least one group of first light-emitting elements are arranged in the second transparent conductive layer and the third transparent conductive layer is the same as the order in which the multiple conductive lines electrically connected to the multiple blue first light-emitting elements are arranged in the second transparent conductive layer and the third transparent conductive layer.

[0017] In some exemplary embodiments, the order in which the multiple conductive lines electrically connected to the multiple red first light-emitting elements in the at least one group of first light-emitting elements are arranged in the second transparent conductive layer and the third transparent conductive layer is opposite to the order in which the multiple conductive lines electrically connected to the multiple blue first light-emitting elements are arranged in the second transparent conductive layer and the third transparent conductive layer.

[0018] On the other hand, an embodiment of the present disclosure provides a display device, comprising: the display substrate as described above, and an optical sensor located on the non-display surface side of the display substrate, wherein the orthographic projection of the optical sensor on the display substrate overlaps with the first display area of the display substrate.

[0019] Still other aspects will become apparent upon reading and understanding the accompanying drawings and detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are intended to provide a further understanding of the technical solutions of the present disclosure and constitute part of the specification. Together with the embodiments of the present disclosure, they are used to explain the technical solutions of the present disclosure and do not constitute a limitation of the technical solutions of the present disclosure. The shapes and sizes of one or more components in the accompanying drawings do not reflect the actual scale and are intended only to illustrate the contents of the present disclosure.

[0021] Figure 1 is a schematic diagram of a display substrate;

[0022] Figure 2 is an equivalent circuit diagram of a pixel circuit;

[0023] Figure 3 for Figure 2 The working timing diagram of the pixel circuit provided;

[0024] Figure 4 A partial cross-sectional schematic diagram of a display substrate;

[0025] Figure 5 A schematic diagram of the connection between a first light-emitting element and a first pixel circuit of a display substrate;

[0026] Figure 6 for Figure 5 a brightness variation curve of a blue first light-emitting element in a row of first light-emitting elements;

[0027] Figure 7 This is a schematic diagram showing the connection between the first light-emitting element and the first pixel circuit of the display substrate according to at least one embodiment of the present disclosure;

[0028] Figure 8 A comparison curve of the length change of the conductive wire connected to the blue first light-emitting element (or the red first light-emitting element) in a group of first light-emitting elements;

[0029] Figure 9 A comparison curve of the length change of the conductive wire connected to the green first light-emitting element in a group of first light-emitting elements;

[0030] Figure 10 This is another connection diagram of the first light-emitting element and the first pixel circuit of the display substrate according to at least one embodiment of the present disclosure;

[0031] Figure 11 A comparison curve of the change in length of the conductive wire connected to the blue first light-emitting element (or the red first light-emitting element) in a group of first light-emitting elements;

[0032] Figure 12 This is another connection diagram of the first light-emitting element and the first pixel circuit according to at least one embodiment of the present disclosure;

[0033] Figure 13 This is another connection diagram of the first light-emitting element and the first pixel circuit according to at least one embodiment of the present disclosure;

[0034] Figure 14 This is another connection diagram of the first light-emitting element and the first pixel circuit according to at least one embodiment of the present disclosure;

[0035] Figure 15 This is another connection diagram of the first light-emitting element and the first pixel circuit according to at least one embodiment of the present disclosure;

[0036] Figure 16 This is another connection diagram of the first light-emitting element and the first pixel circuit according to at least one embodiment of the present disclosure;

[0037] Figure 17 This is another connection diagram of the first light-emitting element and the first pixel circuit according to at least one embodiment of the present disclosure;

[0038] Figure 18 This is another connection diagram of the first light-emitting element and the first pixel circuit according to at least one embodiment of the present disclosure;

[0039] Figure 19 A schematic diagram showing a comparison of capacitance curves of conductive lines according to at least one embodiment of the present disclosure;

[0040] Figure 20 This is another connection diagram of the first light-emitting element and the first pixel circuit according to at least one embodiment of the present disclosure;

[0041] Figure 21 This is another connection diagram of the first light-emitting element and the first pixel circuit according to at least one embodiment of the present disclosure;

[0042] Figure 22 is a schematic diagram of a display device according to at least one embodiment of the present disclosure. DETAILED DESCRIPTION

[0043] The embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The embodiments can be implemented in a variety of different forms. A person skilled in the art can easily understand that the method and content can be transformed into other forms without departing from the purpose and scope of the present disclosure. Therefore, the present disclosure should not be interpreted as being limited to the contents described in the following embodiments. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other in any manner.

[0044] In the drawings, the size of one or more components, layer thicknesses, or regions may be exaggerated for clarity. Therefore, one embodiment of the present disclosure is not necessarily limited to these dimensions, and the shapes and sizes of one or more components in the drawings do not reflect true proportions. Furthermore, the drawings schematically illustrate idealized examples, and one embodiment of the present disclosure is not limited to the shapes or values shown in the drawings.

[0045] In this specification, ordinal numbers such as "first," "second," and "third" are provided to avoid confusion among constituent elements, and are not intended to limit the number. "Multiple" in this disclosure means two or more.

[0046] In this specification, for convenience, words and phrases indicating orientation or positional relationships, such as "middle," "upper," "lower," "front," "back," "vertical," "horizontal," "top," "bottom," "inside," and "outside," are used to illustrate the positional relationships of constituent elements with reference to the accompanying drawings. This is merely for the purpose of facilitating the description of this specification and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present disclosure. The positional relationships of constituent elements may be appropriately changed depending on the orientation of the constituent elements being described. Therefore, the present disclosure is not limited to the words and phrases described in the specification and may be appropriately replaced depending on the circumstances.

[0047] In this specification, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, removable connections, or integral connections; they can refer to mechanical connections or connections; they can refer to direct connections, indirect connections through intermediaries, or internal communication between two components. Those skilled in the art will understand the meaning of these terms in this disclosure based on the circumstances.

[0048] In this specification, "electrically connected" includes components connected together via an element having some electrical function. There are no particular limitations on the "element having some electrical function" as long as it enables transmission of electrical signals between the connected components. Examples of "element having some electrical function" include not only electrodes and wiring, but also switching elements such as transistors, resistors, inductors, capacitors, and other components with multiple functions.

[0049] In this specification, a transistor refers to a device that includes at least three terminals: a gate, a drain, and a source. A transistor has a channel region between the drain (drain electrode terminal, drain region, or drain electrode) and the source (source electrode terminal, source region, or source electrode), and current can flow through the drain, channel region, and source. In this specification, the channel region refers to the region through which current primarily flows.

[0050] In this specification, the first electrode can be referred to as the drain and the second electrode as the source, or vice versa. The functions of "source" and "drain" are sometimes interchanged when using transistors with opposite polarity or when the direction of current changes during circuit operation. Therefore, in this specification, the terms "source" and "drain" can be interchanged. Furthermore, the gate electrode can also be referred to as the control electrode.

[0051] In this specification, "parallel" refers to a state where the angle formed by two straight lines is greater than -10° and less than 10°, and thus also includes a state where the angle is greater than -5° and less than 5°. Furthermore, "perpendicular" refers to a state where the angle formed by two straight lines is greater than 80° and less than 100°, and thus also includes a state where the angle is greater than 85° and less than 95°.

[0052] The term "light transmittance" in this disclosure refers to the ability of light to pass through a medium, and is the percentage of the luminous flux passing through a transparent or translucent body to the incident luminous flux.

[0053] In the present disclosure, "about" and "substantially" are used without strict limits and allow for process and measurement errors. In the present disclosure, "substantially the same" means that the numerical values differ by less than 10%.

[0054] Figure 1 is a schematic diagram of a display substrate. In some examples, such as Figure 1As shown, the display substrate may include: a display area AA and a peripheral area BB. The peripheral area BB may be a non-display area. The display area AA may include: a first display area A1 and a second display area A2. For example, hardware such as an optical sensor (for example, a camera) is provided on one side of the display substrate, and the orthographic projection of the optical sensor on the display substrate overlaps with the first display area A1. The first display area A1 may be a light-transmitting display area, and may also be referred to as an under-screen camera (UDC, Under Display Camera) area; the second display area A2 may be a normal display area. For example, the second display area A2 may be opaque and used only for display. The display substrate of this embodiment can lay a solid foundation for the realization of a true full screen.

[0055] In some examples, such as Figure 1 As shown, the first display area A1 can be located in the top center of the display area AA. The second display area A2 can surround the first display area A1. However, this embodiment is not limited to this. For example, the first display area A1 can be located in other locations such as the upper left corner or upper right corner of the display area AA. For example, the second display area A2 can surround at least one side of the first display area A1.

[0056] In some examples, such as Figure 1 As shown, the display area AA can be a rectangle, such as a rounded rectangle. The second display area A2 can be a circle. However, this embodiment is not limited to this. For example, the second display area A2 can be a rectangle, other pentagons, or hexagons.

[0057] In some examples, the display area AA may be provided with a plurality of sub-pixels. At least one sub-pixel may include a pixel circuit and a light-emitting element. The pixel circuit may be configured to drive the connected light-emitting element. For example, the pixel circuit may be configured to provide a driving current to drive the light-emitting element to emit light. The pixel circuit may include a plurality of transistors and at least one capacitor. For example, the pixel circuit may be a 3T1C, 4T1C, 5T1C, 5T2C, 6T1C, 7T1C, or 8T1C structure. In the above circuit structure, T refers to a thin film transistor, C refers to a capacitor, the number before T represents the number of thin film transistors in the circuit, and the number before C represents the number of capacitors in the circuit.

[0058] In some examples, the multiple transistors in the pixel circuit can be P-type transistors or N-type transistors. Using the same type of transistors in the pixel circuit can simplify the process flow, reduce the difficulty of manufacturing the display substrate, and improve the product yield. In other examples, the multiple transistors in the pixel circuit can include P-type transistors and N-type transistors.

[0059] In some examples, multiple transistors in the pixel circuit may use low-temperature polysilicon thin-film transistors, or may use oxide thin-film transistors, or may use low-temperature polysilicon thin-film transistors and oxide thin-film transistors. The active layer of the low-temperature polysilicon thin-film transistor uses low-temperature polysilicon (LTPS), and the active layer of the oxide thin-film transistor uses oxide semiconductor (Oxide). Low-temperature polysilicon thin-film transistors have the advantages of high mobility and fast charging, and oxide thin-film transistors have the advantages of low leakage current. Integrating low-temperature polysilicon thin-film transistors and oxide thin-film transistors on a display substrate, i.e., LTPS+Oxide (LTPO for short) display substrate, can take advantage of the advantages of both, achieve low-frequency driving, reduce power consumption, and improve display quality.

[0060] In some examples, the light-emitting element may be any one of a light-emitting diode (LED), an organic light-emitting diode (OLED), a quantum dot light-emitting diode (QLED), a micro-LED (including mini-LED or micro-LED), etc. For example, the light-emitting element may be an OLED, and the light-emitting element may emit red light, green light, blue light, or white light, etc. when driven by its corresponding pixel circuit. The color of the light emitted by the light-emitting element may be determined according to needs. In some examples, the light-emitting element may include: an anode, a cathode, and an organic light-emitting layer located between the anode and the cathode. The anode of the light-emitting element may be electrically connected to the corresponding pixel circuit. However, this embodiment is not limited to this.

[0061] In some examples, a pixel unit in display area AA may include three sub-pixels, and the three sub-pixels may be a red sub-pixel, a green sub-pixel, and a blue sub-pixel, respectively. However, this embodiment is not limited to this. In some examples, a pixel unit may include four sub-pixels, and the four sub-pixels may be a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel, respectively.

[0062] In some examples, the shape of the light-emitting element can be a rectangle, a diamond, a pentagon, or a hexagon. When a pixel unit includes three sub-pixels, the light-emitting elements of the three sub-pixels can be arranged horizontally, vertically, or in a triangular pattern; when a pixel unit includes four sub-pixels, the light-emitting elements of the four sub-pixels can be arranged horizontally, vertically, or in a square pattern. However, this embodiment is not limited to this.

[0063] Figure 2An equivalent circuit diagram of a pixel circuit. Figure 3 for Figure 2 The pixel circuit of this embodiment is described using a 7T1C structure as an example. However, this embodiment is not limited to this.

[0064] In some examples, such as Figure 2 As shown, the pixel circuit of this example may include six switching transistors (T1, T2, T4 to T7), a driving transistor T3, and a storage capacitor Cst. The six switching transistors are respectively a data writing transistor T4, a threshold compensation transistor T2, a first emission control transistor T5, a second emission control transistor T6, a first reset transistor T1, and a second reset transistor T7. The light-emitting element EL may include an anode, a cathode, and an organic light-emitting layer disposed between the anode and the cathode.

[0065] In some examples, such as Figure 2 As shown, the display substrate may include scan lines GL, data lines DL, a first power line PL1, a second power line PL2, an emission control line EML, a first initial signal line INIT1, a second initial signal line INIT2, a first reset control line RST1, and a second reset control line RST2. In some examples, the first power line PL1 may be configured to provide a constant first voltage signal VDD to the pixel circuit, the second power line PL2 may be configured to provide a constant second voltage signal VSS to the pixel circuit, and the first voltage signal VDD is greater than the second voltage signal VSS. The scan line GL may be configured to provide a scan signal SCAN to the pixel circuit, the data line DL may be configured to provide a data signal DATA to the pixel circuit, the emission control line EML may be configured to provide an emission control signal EM to the pixel circuit, the first reset control line RST1 may be configured to provide a first reset control signal RESET1 to the pixel circuit, and the second reset control line RST2 may be configured to provide a second reset control signal RESET2 to the pixel circuit.

[0066] In some examples, in the n-th row of pixel circuits, the first reset control line RST1 can be electrically connected to the scan line GL of the n-1-th row of pixel circuits to be input with the scan signal SCAN(n-1), that is, the first reset control signal RESET1(n) is the same as the scan signal SCAN(n-1). The second reset control line RST2 can be electrically connected to the scan line GL of the n-th row of pixel circuits to be input with the scan signal SCAN(n), that is, the second reset control signal RESET2(n) is the same as the scan signal SCAN(n). In some examples, the second reset control line RST2 electrically connected to the n-th row of pixel circuits and the first reset control line RST1 electrically connected to the n+1-th row of pixel circuits can be an integrated structure. Wherein, n is an integer greater than 0. In this way, the signal lines of the display substrate can be reduced, and a narrow frame design of the display substrate can be achieved. However, this embodiment is not limited to this.

[0067] In some examples, the first initial signal line INIT1 can be configured to provide a first initial signal to the pixel circuit, and the second initial signal line INIT2 can be configured to provide a second initial signal to the pixel circuit. For example, the first initial signal can be different from the second initial signal. The first initial signal and the second initial signal can be constant voltage signals, and their magnitudes can be, for example, between the first voltage signal VDD and the second voltage signal VSS, but are not limited thereto. In other examples, the first initial signal and the second initial signal can be the same, and only the first initial signal line can be provided to provide the first initial signal.

[0068] In some examples, such as Figure 2As shown, the driving transistor T3 can output a driving current to drive the light-emitting element EL to emit light under the control of signals such as a scan signal SCAN, a data signal DATA, a first voltage signal VDD, and a second voltage signal VSS. The gate of the data writing transistor T4 is electrically connected to the scan line GL, the first electrode of the data writing transistor T4 is electrically connected to the data line DL, and the second electrode of the data writing transistor T4 is electrically connected to the first electrode of the driving transistor T3. The gate of the threshold compensation transistor T2 is electrically connected to the scan line GL, the first electrode of the threshold compensation transistor T2 is electrically connected to the gate of the driving transistor T3, and the second electrode of the threshold compensation transistor T2 is electrically connected to the second electrode of the driving transistor T3. The gate of the first emission control transistor T5 is electrically connected to the emission control line EML, the first electrode of the first emission control transistor T5 is electrically connected to the first power line PL1, and the second electrode of the first emission control transistor T5 is electrically connected to the first electrode of the driving transistor T3. The gate of the second emission control transistor T6 is electrically connected to the emission control line EML, the first electrode of the second emission control transistor T6 is electrically connected to the second electrode of the driving transistor T3, and the second electrode of the second emission control transistor T6 is electrically connected to the anode of the light-emitting element EL. The first reset transistor T1 is electrically connected to the gate of the drive transistor T3 and is configured to reset the gate of the drive transistor T3. The second reset transistor T7 is electrically connected to the anode of the light-emitting element EL and is configured to reset the anode of the light-emitting element EL. The gate of the first reset transistor T1 is electrically connected to the first reset control line RST1, the first electrode of the first reset transistor T1 is electrically connected to the first initial signal line INIT1, and the second electrode of the first reset transistor T1 is electrically connected to the gate of the drive transistor T3. The gate of the second reset transistor T7 is electrically connected to the second reset control line RST2, the first electrode of the second reset transistor T7 is electrically connected to the second initial signal line INIT2, and the second electrode of the second reset transistor T7 is electrically connected to the anode of the light-emitting element EL. The first capacitor plate of the storage capacitor Cst is electrically connected to the gate of the drive transistor T3, and the second capacitor plate of the storage capacitor Cst is electrically connected to the first power line PL1.

[0069] In this example, the first node N1 is the connection point between the storage capacitor Cst, the first reset transistor T1, the drive transistor T3, and the threshold compensation transistor T2; the second node N2 is the connection point between the first emission control transistor T5, the data write transistor T4, and the drive transistor T3; the third node N3 is the connection point between the drive transistor T3, the threshold compensation transistor T2, and the second emission control transistor T6; and the fourth node N4 is the connection point between the second emission control transistor T6, the second reset transistor T7, and the light-emitting element EL. The fourth node N4 can also be referred to as an anode connection node.

[0070] Refer to the following Figure 3 right Figure 2The working process of the pixel circuit is explained as follows. Figure 2 The pixel circuit shown is described by taking as an example a case where all of the multiple transistors included are P-type transistors.

[0071] In some examples, such as Figure 3 As shown, in a frame display period, the working process of the pixel circuit may include: a first stage S1, a second stage S2 and a third stage S3.

[0072] The first phase S1 is called the reset phase. The first reset control signal RESET1 provided by the first reset control line RST1 is low, turning on the first reset transistor T1. The first initial signal provided by the first initial signal line INIT1 is supplied to the first node N1, initializing the first node N1 and clearing the existing data voltage in the storage capacitor Cst. The scan signal SCAN provided by the scan line GL is high, and the emission control signal EM provided by the emission control line EML is high, turning off the data writing transistor T4, the threshold compensation transistor T2, the first emission control transistor T5, the second emission control transistor T6, and the second reset transistor T7. During this phase, the light-emitting element EL does not emit light.

[0073] The second phase S2 is called the data writing phase or the threshold compensation phase. The scan signal SCAN provided by the scan line GL is a low-level signal, the first reset control signal RESET1 provided by the first reset control line RST1 and the emission control signal EM provided by the emission control line EML are both high-level signals, and the data line DL outputs the data signal DATA. During this phase, the first capacitor plate of the storage capacitor Cst is at a low level, so the drive transistor T3 is turned on. The scan signal SCAN is a low-level signal, turning on the threshold compensation transistor T2, the data writing transistor T4, and the second reset transistor T7. The threshold compensation transistor T2 and the data writing transistor T4 are turned on, so that the data voltage Vdata output by the data line DL is provided to the first node N1 through the second node N2, the turned-on driving transistor T3, the third node N3, and the turned-on threshold compensation transistor T2. The difference between the data voltage Vdata output by the data line DL and the threshold voltage of the driving transistor T3 is charged into the storage capacitor Cst. The voltage of the first capacitor plate of the storage capacitor Cst (i.e., the first node N1) is Vdata-|Vth|, where Vdata is the data voltage output by the data line DL and Vth is the threshold voltage of the driving transistor T3. The second reset transistor T7 is turned on, so that the second initialization signal provided by the second initialization signal line INIT2 is provided to the anode of the light-emitting element EL, initializing (resetting) the anode of the light-emitting element EL, clearing the pre-stored voltage therein, completing the initialization, and ensuring that the light-emitting element EL does not emit light. The first reset control signal RESET1 provided by the first reset control line RST1 is a high signal, turning off the first reset transistor T1. The light emitting control signal EM provided by the light emitting control signal line EML is a high level signal, which turns off the first light emitting control transistor T5 and the second light emitting control transistor T6.

[0074] The third phase S3 is called the light-emitting phase. The light-emitting control signal EM provided by the light-emitting control signal line EML is a low-level signal, while the scan signal SCAN provided by the scan line GL and the first reset control signal RESET1 provided by the first reset control line RST1 are high-level signals. The light-emitting control signal EM provided by the light-emitting control signal line EML is a low-level signal, turning on the first light-emitting control transistor T5 and the second light-emitting control transistor T6. The first voltage signal VDD output by the first power line PL1 provides a driving voltage to the anode of the light-emitting element EL through the turned-on first light-emitting control transistor T5, the driving transistor T3, and the second light-emitting control transistor T6, thereby driving the light-emitting element EL to emit light.

[0075] During the pixel circuit driving process, the driving current flowing through the driving transistor T3 is determined by the voltage difference between its gate and the first electrode. Since the voltage of the first node N1 is Vdata-|Vth|, the driving current of the driving transistor T3 is:

[0076] I=K×(Vgs-Vth) 2 =K×[(VDD-Vdata+|Vth|)-Vth] 2 =K×[VDD-Vdata] 2 .

[0077] Wherein, I is the driving current flowing through the driving transistor T3, that is, the driving current driving the light-emitting element EL, K is a constant, Vgs is the voltage difference between the gate and the first electrode of the driving transistor T3, Vth is the threshold voltage of the driving transistor T3, Vdata is the data voltage output by the data line DL, and VDD is the first voltage signal output by the first power line PL1.

[0078] It can be seen from the above formula that the current flowing through the light emitting element EL has nothing to do with the threshold voltage of the driving transistor T3. Therefore, the pixel circuit of this embodiment can better compensate for the threshold voltage of the driving transistor T3.

[0079] In some examples, such as Figure 1 As shown, the first display area A1 may include: a plurality of first light-emitting elements 13. The second display area A2 may include: a plurality of first pixel circuits 11, a plurality of second pixel circuits 12, a plurality of second light-emitting elements 14, and a plurality of inactive pixel circuits (not shown). At least one second pixel circuit 12 among the plurality of second pixel circuits 12 may be electrically connected to at least one second light-emitting element 14 among the plurality of second light-emitting elements 14, and the orthographic projection of the at least one second pixel circuit 12 on the substrate may at least partially overlap with the orthographic projection of the at least one second light-emitting element 14 on the substrate. The at least one second pixel circuit 12 may be configured to provide a drive signal to the electrically connected second light-emitting element 14 to drive the second light-emitting element 14 to emit light. For example, the plurality of second pixel circuits 12 and the plurality of second light-emitting elements 14 may be electrically connected in a one-to-one correspondence. At least one first pixel circuit 11 among the plurality of first pixel circuits 11 may be electrically connected to at least one first light-emitting element 13 among the plurality of first light-emitting elements 13 via a conductive line L. The orthographic projection of the at least one first pixel circuit 11 on the substrate may not overlap with the orthographic projection of the at least one first light-emitting element 13 on the substrate. For example, the plurality of first pixel circuits 11 and the plurality of first light-emitting elements 13 can be electrically connected in a one-to-one correspondence. One end of the conductive line L is electrically connected to the first pixel circuit 11, and the other end is electrically connected to the first light-emitting element 13. The conductive line L can extend from the first display area A1 to the second display area A2. For example, the conductive line L can extend from the first display area A1 to the second display area A2 along the first direction D1; alternatively, the conductive line L can first extend from the first display area A1 along the second direction D2, and then extend along the first direction D1 to the second display area A2. However, this embodiment is not limited to this.

[0080] In some examples, the conductive line L can be made of a transparent conductive material, for example, a conductive oxide material such as indium tin oxide (ITO). However, this embodiment is not limited to this. In some examples, multiple conductive lines L can be arranged in one transparent conductive layer, or multiple conductive lines L can be arranged in two or three transparent conductive layers. Each conductive line L can connect a first pixel circuit 11 and a first light-emitting element 13. Alternatively, a first pixel circuit 11 and a first light-emitting element 13 can be electrically connected by connecting multiple conductive lines L located in different transparent conductive layers in sequence.

[0081] In some examples, since the second display area A2 is not only provided with a second pixel circuit 12 electrically connected to the second light-emitting element 14, but also provided with a first pixel circuit 11 electrically connected to the first light-emitting element 13, the number of pixel circuits in the second display area A2 can be greater than the number of second light-emitting elements 14. In some examples, the area for setting the newly added pixel circuits (including the first pixel circuits and the invalid pixel circuits) can be obtained by reducing the size of the second pixel circuit in the first direction D1. For example, the size of the pixel circuit in the first direction D1 can be smaller than the size of the second light-emitting element 14 in the first direction D1. For example, the original pixel circuits in each a column can be compressed along the first direction D1 to add a new column of pixel circuits, and the space occupied by the pixel circuits in the a column before compression and the pixel circuits in the a+1 column after compression can be the same. Wherein, a can be an integer greater than 1. In some examples, a can be equal to 4. However, this embodiment is not limited to this. For example, a can be equal to 2 or 3.

[0082] In other examples, the original row b of pixel circuits can be compressed along the second direction D2 to create space for an additional row of pixel circuits, with the space occupied by the row b of pixel circuits before compression and the row b+1 of pixel circuits after compression being the same. Where b can be an integer greater than 1. Alternatively, the area for arranging the additional pixel circuits can be obtained by reducing the size of the second pixel circuits in the first direction D1 and the second direction D2.

[0083] In the embodiments of the present disclosure, a row of light-emitting elements may refer to pixel circuits connected to the row of light-emitting elements being connected to the same gate line (e.g., a scan line). A row of pixel circuits may refer to pixel circuits in the row being connected to the same gate line. However, this embodiment is not limited to this.

[0084] Figure 4 A partial cross-sectional schematic diagram of a display substrate. Figure 4 In the example, three conductive layers (including a first transparent conductive layer, a second transparent conductive layer and a third transparent conductive layer) are used for illustration. Figure 4As shown, in a direction perpendicular to the display substrate, the display substrate may include: a substrate 100, a circuit structure layer 20, a first transparent conductive layer 31, a second transparent conductive layer 32, a third transparent conductive layer 33, a light-emitting structure layer 40, and an encapsulation structure layer 50, which are sequentially arranged on the substrate 100. A first flat layer 301 may be arranged between the first transparent conductive layer 31 and the second transparent conductive layer 32, a second flat layer 302 may be arranged between the second transparent conductive layer 32 and the third transparent conductive layer 33, and a third flat layer 303 may be arranged between the third transparent conductive layer 33 and the light-emitting structure layer 40. However, this embodiment is not limited to this. In other examples, a touch structure layer, a color filter structure layer, etc. may be further arranged on the side of the encapsulation structure layer 50 away from the substrate 100.

[0085] In some examples, the circuit structure layer of the second display area A2 may include: a semiconductor layer, a first gate metal layer, a second gate metal layer, and a third gate metal layer, sequentially disposed on a substrate. A first insulating layer may be provided between the semiconductor layer and the first gate metal layer; a second insulating layer may be provided between the first and second gate metal layers; a third insulating layer may be provided between the second and third gate metal layers; and a fourth insulating layer may be provided between the third gate metal layer and the first transparent conductive layer. The semiconductor layer may include at least: an active layer of a transistor in the pixel circuit; the first gate metal layer may include at least: a gate electrode of the transistor in the pixel circuit and a first plate of a storage capacitor; the second gate metal layer may include at least: a second plate of the storage capacitor in the pixel circuit; and the third gate metal layer may include at least: a first electrode and a second electrode of the transistor in the pixel circuit. The circuit structure layer of the first display area A1 may not include a metal film layer and, for example, may include a stacked first insulating layer, a second insulating layer, a third insulating layer, and a fourth insulating layer. In some examples, the first to third insulating layers may be inorganic material layers, and the fourth insulating layer may be an organic material layer.

[0086] In some examples, such as Figure 4As shown, the first transparent conductive layer 31 may include: a first transparent conductive line 311 extending from the first display area A1 to the second display area A2, and a first anode connection electrode 312 located in the second display area A2; the second transparent conductive layer 32 may include: a second transparent conductive line (not shown) extending from the first display area A1 to the second display area A2, a third anode connection electrode 323 located in the second display area A2, and a second anode connection electrode 322 located in the first display area A1; and the third transparent conductive layer 33 may include: a third transparent conductive line (not shown) extending from the first display area A1 to the second display area A2, a fifth anode connection electrode 333 located in the second display area A2, and a fourth anode connection electrode 332 located in the first display area A1. The anode (e.g., anode 401a) of the first light-emitting element in the first display area A1 can be electrically connected to the first pixel circuit in the second display area A2 via the fourth anode connection electrode 332, the second anode connection electrode 322, and the first transparent conductive line 311. The anode of the second light emitting element in the second display area A2 (eg, the anode 401b) may be electrically connected to the second pixel circuit via the fifth anode connection electrode 333, the third anode connection electrode 323, and the first anode connection electrode 312. However, this embodiment is not limited thereto.

[0087] In some examples, such as Figure 4 As shown, the light-emitting structure layer 40 may include: an anode layer (for example, including an anode 401a of a first light-emitting element and an anode 401b of a second light-emitting element), an organic light-emitting layer (for example, including an organic light-emitting layer 402a of a first light-emitting element and an organic light-emitting layer 402b of a second light-emitting element), a cathode layer 403, and a pixel definition layer 404. The pixel definition layer 404 may be provided with a plurality of pixel openings, and the organic light-emitting layer may be in contact with at least a portion of the surface of the anode layer through the pixel openings. The cathode layer 403 may cover the organic light-emitting layer. The cathode layer 403 of the second display area A2 may be a whole-surface cathode, and the cathode layer 403 of the first display area A1 may be a patterned cathode having a hollow area, thereby improving the light transmittance of the first display area A1.

[0088] In some examples, such as Figure 4 As shown, the encapsulation structure layer 50 may include a stacked first encapsulation layer, a second encapsulation layer, and a third encapsulation layer. The first encapsulation layer is made of an inorganic material, the second encapsulation layer is made of an organic material, and the third encapsulation layer is made of an inorganic material, covering the first and second encapsulation layers. However, this embodiment is not limited to this. In some examples, the encapsulation layer may adopt a five-layer structure of inorganic / organic / inorganic / organic / inorganic.

[0089] Figure 5 The figure is a schematic diagram showing the connection between a first light-emitting element and a first pixel circuit of a display substrate. Figure 5 Indicated Figure 1The connection relationship between a row of first light-emitting elements in the right half area of the first display area and a row of first pixel circuits in the second display area. Figure 5 Only the first pixel circuits in the second display area are illustrated, and the second pixel circuits between adjacent first pixel circuits are omitted. Figure 1 In the figure, two rows of first light emitting elements in the first display area A1 are taken as an example for illustration.

[0090] In some examples, such as Figure 5 As shown, the multiple first light-emitting elements in the first display area A1 may include a green first light-emitting element 131, a blue first light-emitting element 133, and a red first light-emitting element 132. The green first light-emitting element 131 is configured to emit green light, the blue first light-emitting element 133 is configured to emit blue light, and the red first light-emitting element 132 is configured to emit red light. In a row of first light-emitting elements, along the first direction D1, the multiple first light-emitting elements may be arranged in the order of the blue first light-emitting element 133, the green first light-emitting element 131, the red first light-emitting element 132, and the green first light-emitting element 131.

[0091] In some examples, such as Figure 5 As shown, in a row of first light-emitting elements, the first pixel circuit 11a electrically connected to the green first light-emitting element 131 can be located on a side closer to the first display area A1 than the first pixel circuit 11b electrically connected to the other color first light-emitting elements (including the blue first light-emitting element 133 and the red first light-emitting element 132). The first pixel circuit 11a electrically connected to the green first light-emitting element 131 is closer to the first display area A1 than the first pixel circuit 11b electrically connected to any other color first light-emitting element. For example, multiple (e.g., 13) green first light-emitting elements 131 near the second display area A2 can be electrically connected to the first pixel circuit 11a via a first transparent conductive line located in the first transparent conductive layer 31, and multiple (e.g., 7) green first light-emitting elements 131 away from the second display area A2 can be electrically connected to the first pixel circuit 11a via a second transparent conductive line located in the second transparent conductive layer 32. Multiple (for example, 5) blue first light-emitting elements 133 and multiple (for example, 5) red first light-emitting elements 132 close to the second display area A2 can be electrically connected to the first pixel circuit 11b through the second transparent conductive line located in the second transparent conductive layer 32, and multiple (for example, 5) blue first light-emitting elements 133 and multiple (for example, 5) red first light-emitting elements 132 away from the second display area A2 can be electrically connected to the first pixel circuit 11b through the third transparent conductive line located in the third transparent conductive layer 33.

[0092] exist Figure 5In the embodiment, the green first light-emitting element 131 is preferentially connected to the first pixel circuit close to the first display area. The length of the conductive line electrically connected between the green first light-emitting element 131 and the first pixel circuit is shorter, while the length of the conductive line electrically connected between the red first light-emitting element 132 and the first pixel circuit and the length of the conductive line electrically connected between the blue first light-emitting element 133 and the first pixel circuit are longer. This may easily lead to the green first light-emitting element being turned on while the blue first light-emitting element and the red first light-emitting element are not turned on during low grayscale display, resulting in a poor display in which the center of the first display area is green.

[0093] Moreover, in Figure 5 In the illustrated row of first light-emitting elements, multiple blue first light-emitting elements 133 are electrically connected to the second transparent conductive lines located in the second transparent conductive layer 32 and the third transparent conductive lines located in the third transparent conductive layer 33, respectively. Multiple red first light-emitting elements 132 are electrically connected to the second transparent conductive lines located in the second transparent conductive layer 32 and the third transparent conductive lines located in the third transparent conductive layer 33, respectively. However, the capacitance per unit area of transparent conductive lines located in different transparent conductive layers varies, which can easily lead to differences in brightness among first light-emitting elements emitting the same color within a row of first light-emitting elements. Figure 6 for Figure 5 Brightness variation curve of multiple red first light-emitting elements in a row of first light-emitting elements. Figure 6 The horizontal axis in represents the number of the plurality of blue and red first light-emitting elements in a row of first light-emitting elements. In this example, numbers 1 to 20 are the numbers of the green first light-emitting elements in a row of first light-emitting elements, and numbers 21 to 40 are the numbers of the blue and red first light-emitting elements in a row of first light-emitting elements. Among them, along the first direction from the first display area to the second display area, the numbers of the first light-emitting elements emitting light of the same color gradually increase. For example Figure 6 The solid dots in the graph represent the brightness of the ten red first light-emitting elements numbered 21, 23, 25, 27, 29, 31, 33, 35, 37 and 39 respectively. Figure 6 The vertical axis in represents brightness. Figure 5 and Figure 6 As shown, in a row of first light-emitting elements, the red first light-emitting elements numbered 21, 23, 25, 27 and 29 are electrically connected to the second transparent conductive line located in the second transparent conductive layer, and the red first light-emitting elements numbered 31, 33, 35, 37 and 39 are electrically connected to the third transparent conductive line located in the third transparent conductive layer. Figure 6It can be seen that the brightness of the multiple red first light-emitting elements electrically connected to the second transparent conductive line of the second transparent conductive layer shows a linear relationship, and the brightness of the multiple red first light-emitting elements electrically connected to the third transparent conductive line of the third transparent conductive layer shows a linear relationship. However, there is a sudden change in the brightness between the red first light-emitting elements electrically connected to the second transparent conductive line and the red first light-emitting elements electrically connected to the third transparent conductive line, resulting in a brightness difference and causing poor display in the first display area. Similarly, there is a difference in the brightness of the multiple blue first light-emitting elements in a row of first light-emitting elements, which also causes poor display in the first display area.

[0094] Embodiments of the present disclosure provide a display substrate comprising: a first display area and a second display area located at least to one side of the first display area. The display substrate comprises: a substrate, a circuit structure layer located on one side of the substrate, and a light-emitting structure layer located on a side of the circuit structure layer away from the substrate. The circuit structure layer comprises a plurality of first pixel circuits located in the second display area. The light-emitting structure layer comprises a plurality of first light-emitting elements located in the first display area. At least one of the plurality of first pixel circuits is electrically connected to at least one of the plurality of first light-emitting elements and configured to drive the at least one first light-emitting element to emit light. The plurality of first light-emitting elements comprises: a plurality of first light-emitting elements that emit a first color of light and a plurality of first light-emitting elements that emit a second color of light, wherein the first color of light is different from the second color of light. For example, the first color of light can be green, and the second color of light can be at least one of the following: blue or red. The plurality of first light-emitting elements comprises a plurality of groups of first light-emitting elements, wherein the plurality of first light-emitting elements in each group of first light-emitting elements are arranged along a first direction, and the plurality of first light-emitting elements in each group of first light-emitting elements are arranged along a second direction, with the first direction intersecting the second direction. For example, the first direction and the second direction can be perpendicular to each other. The plurality of first light-emitting elements emitting second color light in the at least one group of first light-emitting elements include: at least one first light-emitting element of a first type and at least one first light-emitting element of a second type. In the at least one group of first light-emitting elements, a first pixel circuit electrically connected to the at least one first light-emitting element of the first type is located on a side of the first pixel circuit electrically connected to all first light-emitting elements emitting first color light that is closer to the first display area; and a first pixel circuit electrically connected to the at least one second light-emitting element of the second type is located on a side of the first pixel circuit electrically connected to all first light-emitting elements emitting first color light that is farther from the first display area.

[0095] In some examples, a group of first light-emitting elements may include a row of first light-emitting elements or a portion of first light-emitting elements in a row of first light-emitting elements. Figure 1 2 shows some of the first light emitting elements of the two groups. A plurality of groups of first light emitting elements may be arranged along the column direction (eg, the second direction) of the first light emitting elements.

[0096] The display substrate provided in this embodiment, for at least one group of first light-emitting elements, arranges the first pixel circuit electrically connected to the first light-emitting elements of the first type on a side of the first pixel circuit electrically connected to all the first light-emitting elements emitting the first color light, close to the first display area. That is, the first pixel circuit electrically connected to the first light-emitting elements of the first type is arranged on a side of the first pixel circuit electrically connected to all the first light-emitting elements emitting the first color light, close to the first display area, thereby increasing the length of the conductive line between the first light-emitting elements emitting the first color light and the first pixel circuit, and increasing the capacitance of the anode connection node of the first pixel circuit electrically connected to the first light-emitting elements emitting the first color light, so that the overall lighting time of all the first light-emitting elements emitting the first color light is increased, and the difference between the maximum length and the minimum length of the conductive line connected to the first light-emitting elements emitting the first color light is reduced, thereby improving the poor display of green light in the center of the first display area.

[0097] In some exemplary embodiments, the first pixel circuit electrically connected to at least one second-type first light-emitting element in at least one group of first light-emitting elements is a second-type first pixel circuit, the first pixel circuit electrically connected to at least one first-type first light-emitting element is a third-type first pixel circuit, and the first pixel circuits electrically connected to multiple first light-emitting elements emitting first color light are first-type first pixel circuits. Among the first pixel circuits electrically connected to at least one group of first light-emitting elements, the number of the third-type first pixel circuits is less than or equal to the number of the second-type first pixel circuits. For example, among the first pixel circuits electrically connected to a group of first light-emitting elements, the proportion of the third-type first pixel circuits may be approximately 10% to 30%, such as approximately 12.5%. For example, if a group of first light-emitting elements is electrically connected to 40 first pixel circuits, the number of the third-type first pixel circuits may be 5. In some examples, the first pixel circuits are electrically connected to the first light-emitting elements in a one-to-one correspondence. Accordingly, the number of the first-type first light-emitting elements may be less than or equal to the number of the second-type first light-emitting elements. For example, among the first pixel circuits electrically connected to a group of first light-emitting elements, the proportion of the first-type first light-emitting elements may be approximately 10% to 30%. However, this embodiment is not limited to this.

[0098] In some exemplary embodiments, a plurality of first pixel circuits electrically connected to all first light-emitting elements emitting first color light in at least one group of first light-emitting elements may be arranged sequentially along the first direction. In this example, a plurality of first pixel circuits electrically connected to all first light-emitting elements emitting first color light in a group of first light-emitting elements may be arranged continuously in the first direction, that is, only second pixel circuits may be arranged between adjacent first pixel circuits, and no first pixel circuits electrically connected to first light-emitting elements emitting second color light are arranged. However, this embodiment is not limited to this. In other examples, all first light-emitting elements emitting first color light in a group of first light-emitting elements may be divided into two parts, and the first pixel circuits electrically connected to the two parts of first light-emitting elements may be arranged to be discontinuous, for example, the first pixel circuit electrically connected to the first light-emitting element emitting second color light may be arranged between the two parts of first pixel circuits electrically connected to the first light-emitting elements.

[0099] In some exemplary embodiments, the display substrate may further include: a plurality of conductive layers located between the circuit structure layer and the light-emitting structure layer, and the plurality of conductive layers may include a plurality of conductive lines. At least one first pixel circuit may be electrically connected to at least one first light-emitting element through at least one conductive line. The plurality of first light-emitting elements emitting second color light in the first display area may include: a plurality of blue first light-emitting elements and a plurality of red first light-emitting elements. The plurality of conductive lines electrically connected to the plurality of blue first light-emitting elements may be located in the same conductive layer, or in two adjacent conductive layers. The plurality of conductive lines electrically connected to the plurality of red first light-emitting elements may be located in the same conductive layer, or in two adjacent conductive layers. In this example, the conductive lines electrically connected to the first light-emitting elements emitting light of the same color are arranged to be located in the same conductive layer or in two adjacent conductive layers, which can reduce the brightness difference of the first light-emitting elements emitting light of the same color caused by the change of conductive lines, and can improve the display effect of the first display area.

[0100] The following describes the solutions of this embodiment with multiple examples.

[0101] Figure 7 This is a schematic diagram of the connection between the first light-emitting element and the first pixel circuit of the display substrate of at least one embodiment of the present disclosure. Figure 7 The schematic diagram of a first light emitting element is Figure 1 A row of first light-emitting elements in the right half area of the first display area. Figure 7 Only the first pixel circuits in the second display area are illustrated, and the second pixel circuits between adjacent first pixel circuits are omitted.

[0102] In some examples, such as Figure 7As shown, the multiple first light-emitting elements 13 in the first display area A1 may include: a green first light-emitting element 131, a blue first light-emitting element 133, and a red first light-emitting element 132. In this example, the first light-emitting element emitting the first color light may be the green first light-emitting element 131, and the first light-emitting element emitting the second color light may include the blue first light-emitting element 133 and the red first light-emitting element 132. In a row of first light-emitting elements, along the first direction D1, the multiple first light-emitting elements may be arranged in the order of the blue first light-emitting element 133, the green first light-emitting element 131, the red first light-emitting element 132, and the green first light-emitting element 131.

[0103] In some examples, such as Figure 7As shown, a group of first light-emitting elements 13 is electrically connected to a corresponding row of first pixel circuits 11. A row of first pixel circuits 11 may include: a plurality of (for example, twenty) first-category first pixel circuits 111, a plurality of (for example, fifteen) second-category first pixel circuits 112, and a plurality of (for example, five) third-category first pixel circuits 113. The plurality of third-category first pixel circuits 113, the plurality of first-category first pixel circuits 111, and the plurality of second-category first pixel circuits 112 may be arranged in sequence along the first direction D1 from the first display area A1 to the second display area A2. In this example, the first light-emitting element electrically connected to the third-category first pixel circuit 113 may be a first-category first light-emitting element that emits the second color light, and the first light-emitting element electrically connected to the second-category first pixel circuit 112 may be a second-category first light-emitting element that emits the second color light. The plurality of third-type first pixel circuits 113 in a row of first pixel circuits are electrically connected to a plurality of first light-emitting elements (e.g., five blue first light-emitting elements 133 and five red first light-emitting elements 132) in a group of first light-emitting elements that emit second color light and are located near the second display area A2. The five blue first light-emitting elements 133 and five red first light-emitting elements 132 in the group of first light-emitting elements that are located closest to the second display area A2 may be the first-type first light-emitting elements of this example. The plurality of second-type first pixel circuits 112 are electrically connected to a plurality of first light-emitting elements (e.g., fifteen blue first light-emitting elements 133 and fifteen red first light-emitting elements 132) in a group of first light-emitting elements that emit second color light and are located away from the second display area A2. The fifteen blue first light-emitting elements 133 and fifteen red first light-emitting elements 132 in the group of first light-emitting elements, excluding the five blue first light-emitting elements 133 and fifteen red first light-emitting elements 132 located closest to the second display area A2, may be the second-type first light-emitting elements of this example. The number of the second-type first light-emitting elements may be less than the number of the first-type first light-emitting elements. The plurality of first-type first pixel circuits 111 are electrically connected to a plurality of first light-emitting elements (e.g., twenty green first light-emitting elements 131) in a group of first light-emitting elements that emit first color light. The first light-emitting elements emitting second color light that are electrically connected to the third-type first pixel circuits 113 can be arranged consecutively in the first direction D1. For example, only first light-emitting elements emitting first color light can be arranged between these first light-emitting elements 13, without any first light-emitting elements emitting second color light that are electrically connected to the second-type first pixel circuits 112.

[0104] In some examples, such as Figure 7As shown, in a group of first light-emitting elements, multiple first-type first pixel circuits 111 electrically connected to all green first light-emitting elements 131 can be arranged continuously along the first direction D1. In other words, only second pixel circuits can be arranged between adjacent first-type first pixel circuits 111, without first pixel circuits electrically connected to first light-emitting elements emitting light of other colors. For example, only second pixel circuits can be arranged between adjacent first-type first pixel circuits 111, without first pixel circuits electrically connected to the blue first light-emitting element 133 and the red first light-emitting element 132.

[0105] In some examples, such as Figure 7 As shown, in a group of first light-emitting elements, the first type of first pixel circuit 111 electrically connected to the green first light-emitting element 131 near the second display area A2 can be located on a side of the first type of first pixel circuit 111 electrically connected to the green first light-emitting element 131 away from the second display area A2, closer to the first display area A1. In other words, in a group of first light-emitting elements, compared to the boundary between the first display area A1 and the second display area A2, the green first light-emitting element 131 near the boundary is electrically connected to the first type of first pixel circuit 111 near the boundary, and the green first light-emitting element 131 away from the boundary is electrically connected to the first type of first pixel circuit 111 away from the boundary.

[0106] In some examples, such as Figure 7 As shown, in a group of first light-emitting elements, the first pixel circuit electrically connected to the red first light-emitting element 132 near the second display area A2 can be located on a side of the first pixel circuit electrically connected to the red first light-emitting element 132 away from the second display area A2 and close to the first display area A1. The first pixel circuit electrically connected to the blue first light-emitting element 133 near the second display area A2 can be located on a side of the first pixel circuit electrically connected to the blue first light-emitting element 133 away from the second display area A2 and close to the first display area A1.

[0107] This example does not limit the film layer of the conductive line L connecting the first light emitting element 13 and the first pixel circuit 11 .

[0108] In this example, compared to Figure 5In the connection method shown, the first pixel circuit electrically connected to all green first light-emitting elements 131 in a group of first light-emitting elements will be moved as a whole in the first direction D1 away from the boundary between the first display area A1 and the second display area A2. In this way, the difference between the longest conductive line and the shortest conductive line electrically connected to the green first light-emitting element 131 can be reduced. The first light-emitting elements that emit the second color light can be divided into a first type of first light-emitting elements and a second type of first light-emitting elements. The first type of first light-emitting elements are electrically connected to the third type of first pixel circuit 113, and the second type of first light-emitting elements are electrically connected to the second type of first pixel circuit 112. The brightness difference caused by the difference in the length of the conductive line electrically connected to the first type of first light-emitting elements and the second type of first light-emitting elements can be compensated by performing algorithmic compensation on the first type of first light-emitting elements to improve the display effect of the first display area.

[0109] Figure 8 It is a length change comparison curve of the conductive wire connected to the first light-emitting elements (including the blue first light-emitting element and the red first light-emitting element) that emit the second color light in a group of first light-emitting elements. Figure 8 The solid line in Figure 7 a length variation curve of the conductive wire connected to the first light-emitting element emitting the second color light in a group of first light-emitting elements, Figure 8 The dotted line in Figure 5 A length variation curve of a conductive line connected to a first light-emitting element emitting second color light in a group of first light-emitting elements. Figure 8 The horizontal axis in represents the number of the first light-emitting elements (i.e., the blue first light-emitting element and the red first light-emitting element) in a group of first light-emitting elements that emit light of the second color. The numbers of the first light-emitting elements emitting light of the same color increase gradually along the first direction from the first display area to the second display area. For example, number 1 is the blue first light-emitting element, number 2 is the red first light-emitting element, number 3 is the blue first light-emitting element, number 4 is the red first light-emitting element, and so on. Figure 8 The vertical axis represents the length of the conductive line in micrometers.

[0110] In some examples, such as Figure 8 As shown by the dotted line, due to Figure 5 The first pixel circuits electrically connected to the first light emitting elements emitting the second color light in a group of first light emitting elements can be arranged continuously, so the lengths of the conductive lines electrically connected to the first light emitting elements emitting the second color light in a group of first light emitting elements can be in a linear relationship. Figure 8 As shown by the solid line, due to Figure 7The first light-emitting elements emitting the second color light in the group of first light-emitting elements shown are divided into first-type first light-emitting elements electrically connected to the third-type first pixel circuit 113 and second-type first light-emitting elements electrically connected to the second-type first pixel circuit 112. Therefore, there is a sudden change in the length of the conductive line electrically connected to the blue first light-emitting element or the red first light-emitting element in the group of first light-emitting elements, wherein the change in the length of the conductive line occurs between the first-type first light-emitting element electrically connected to the third-type first pixel circuit and the second-type first light-emitting element electrically connected to the second-type first pixel circuit. Figure 7 In the example, the lengths of the conductive lines electrically connected to the five blue first light-emitting elements 133 and the red first light-emitting elements 132 closest to the second display area A2 may have a linear relationship, and the lengths of the conductive lines electrically connected to the remaining fifteen blue first light-emitting elements 133 and the red first light-emitting elements 132 may have a linear relationship. However, there is a jump in the lengths of the conductive lines electrically connected to the five blue first light-emitting elements 133 and the red first light-emitting elements 132 compared to the lengths of the conductive lines electrically connected to the remaining fifteen blue first light-emitting elements 133 and the red first light-emitting elements 132. In this example, the brightness difference caused by the difference in the lengths of the conductive lines electrically connected to the first type of first light-emitting elements and the second type of first light-emitting elements of the first light-emitting elements emitting the second color light can be compensated for by performing algorithmic compensation on the first type of first light-emitting elements.

[0111] Figure 9 The graph is a comparison curve of the length change of the conductive wire connected to the green first light-emitting elements in a group of first light-emitting elements. Figure 9 The solid line in Figure 7 A length variation curve of the conductive line connected to the green first light-emitting element in a group of first light-emitting elements, Figure 9 The dotted line in Figure 5 A length variation curve of the conductive line connected to the green first light-emitting element in a group of first light-emitting elements. Figure 9 The horizontal axis in represents the number of the first light-emitting element (i.e., the green first light-emitting element) that emits the first color light in a group of first light-emitting elements, wherein the number of the green first light-emitting element gradually increases along the first direction from the first display area to the second display area. Figure 9 The vertical axis represents the length of the conductive line in micrometers.

[0112] In some examples, such as Figure 9 As shown by the dotted line, Figure 5 The first pixel circuit electrically connected to the green first light emitting element in the group of first light emitting elements is arranged close to the first display area, so the length of the conductive line electrically connected to the green first light emitting element in the group of first light emitting elements can be in a linear relationship. Figure 9As shown by the solid line, Figure 7 The first pixel circuit electrically connected to all the green first light-emitting elements in the group of first light-emitting elements is moved as a whole in a first direction away from the boundary between the first display area and the second display area. The lengths of the conductive lines electrically connected to the green first light-emitting elements in the group of first light-emitting elements can be linearly related, and compared to Figure 5 The connection method shown is Figure 7 The connection method shown can increase the overall length of the conductive lines electrically connected to all green first light-emitting elements, thereby reducing the difference between the longest and shortest conductive lines electrically connected to the green first light-emitting elements.

[0113] Table 1 shows the green first light emitting element when using Figure 5 The connections shown and Figure 7 The length comparison table of the conductive wires under the connection mode shown in FIG. Among them, along the first direction from the first display area to the second display area, the number of the green first light-emitting elements gradually increases. According to Table 1, the number of the green first light-emitting elements gradually increases. Figure 5 When the connection mode is shown, the ratio of the length of the longest conductive line to the length of the shortest conductive line electrically connected to the green first light-emitting element can be 11.8. Figure 7 When the connection mode is shown, the ratio of the length of the longest conductive line to the length of the shortest conductive line electrically connected to the green first light emitting element can be 4.3. Figure 7 The connection method shown can effectively reduce the ratio of the length of the longest conductive line to which the green first light-emitting element is electrically connected to the length of the shortest conductive line, thereby facilitating module algorithm compensation and reducing the display brightness difference between the green first light-emitting element near the center of the first display area and the green first light-emitting element near the edge of the first display area in a group of first light-emitting elements.

[0114] Table 1

[0115]

[0116]

[0117] Figure 10 FIG. 1 is another connection diagram of the first light emitting element and the first pixel circuit of the display substrate of at least one embodiment of the present disclosure. Figure 10As shown, multiple third-category first pixel circuits 113 in a row of first pixel circuits 11 are electrically connected to multiple first light-emitting elements emitting second color light (for example, including five blue first light-emitting elements 133 and red first light-emitting elements 132) in a group of first light-emitting elements 13 that are away from the second display area A2. Multiple second-category first pixel circuits 112 are electrically connected to multiple first light-emitting elements emitting second color light (for example, including fifteen blue first light-emitting elements 133 and red first light-emitting elements 132) in a group of first light-emitting elements that are close to the second display area A2. Multiple first-category first pixel circuits 111 are electrically connected to multiple first light-emitting elements emitting first color light (for example, including twenty green first light-emitting elements 131) in a group of first light-emitting elements. In this example, the first light-emitting element electrically connected to the third-category first pixel circuit 113 is located on the side of the first light-emitting element electrically connected to the second-category first pixel circuit 112 that is away from the second display area A2. In this example, the five blue first light-emitting elements 133 and the red first light-emitting elements 132 that are farthest from the second display area in a group of first light-emitting elements serve as first-type first light-emitting elements and are electrically connected to the third-type first pixel circuit 113. The remaining fifteen blue first light-emitting elements 133 and red first light-emitting elements 132 serve as second-type first light-emitting elements and are electrically connected to the second-type first pixel circuit 112. For other descriptions of this embodiment, reference can be made to the descriptions of the preceding embodiments, and therefore, they will not be repeated here.

[0118] Figure 11 It is a comparative curve of the change in length of the conductive wire connected to the first light-emitting elements (including the blue first light-emitting element and the red first light-emitting element) that emit the second color light in a group of first light-emitting elements. Figure 11 The solid line in Figure 10 a length variation curve of the conductive wire connected to the first light-emitting element emitting the second color light in a group of first light-emitting elements, Figure 11 The dotted line in Figure 5 A length variation curve of a conductive line connected to a first light-emitting element emitting second color light in a group of first light-emitting elements. Figure 11 The horizontal axis in represents the number of the first light-emitting elements (i.e., the blue first light-emitting element and the red first light-emitting element) in a group of first light-emitting elements that emit light of the second color. The numbers of the first light-emitting elements emitting light of the same color increase gradually along the first direction from the first display area to the second display area. For example, number 1 is the blue first light-emitting element, number 2 is the red first light-emitting element, number 3 is the blue first light-emitting element, number 4 is the red first light-emitting element, and so on. Figure 11 The vertical axis represents the length of the conductive line in micrometers.

[0119] In some examples, such as Figure 11 As shown by the dotted line, due to Figure 5 The first pixel circuits electrically connected to the first light emitting elements emitting the second color light in a group of first light emitting elements can be arranged continuously, so the lengths of the conductive lines electrically connected to the first light emitting elements emitting the second color light in a group of first light emitting elements can be in a linear relationship. Figure 11 As shown by the solid line, due to Figure 10 The first light-emitting elements emitting the second color light in the group of first light-emitting elements shown are divided into first-type first light-emitting elements electrically connected to the third-type first pixel circuit 113 and second-type first light-emitting elements electrically connected to the second-type first pixel circuit 112. Therefore, there is a sudden change in the length of the conductive line electrically connected to the blue first light-emitting element or the red first light-emitting element in the group of first light-emitting elements, wherein the change in the length of the conductive line occurs between the first-type first light-emitting element electrically connected to the third-type first pixel circuit and the second-type first light-emitting element electrically connected to the second-type first pixel circuit. Figure 11 In the example, the lengths of the conductive lines electrically connected to the five blue first light-emitting elements 133 and the red first light-emitting elements 132 farthest from the second display area A2 may have a linear relationship, and the lengths of the conductive lines electrically connected to the remaining fifteen blue first light-emitting elements 133 and the red first light-emitting elements 132 may have a linear relationship. However, there is a jump in the lengths of the conductive lines electrically connected to the five blue first light-emitting elements 133 and the red first light-emitting elements 132 compared to the lengths of the conductive lines electrically connected to the remaining fifteen blue first light-emitting elements 133 and the red first light-emitting elements 132. In this example, the brightness difference caused by the difference in the lengths of the conductive lines electrically connected to the first type of first light-emitting elements and the second type of first light-emitting elements of the first light-emitting elements emitting the second color light can be compensated for by performing algorithmic compensation on the first type of first light-emitting elements.

[0120] Figure 12 FIG. 1 is another connection diagram of the first light emitting element and the first pixel circuit according to at least one embodiment of the present disclosure. Figure 12As shown, a plurality (e.g., thirteen) green first light-emitting elements 131 in a group of first light-emitting elements 13 near the second display area A2 can be electrically connected to the first type of first pixel circuit 111 via a first transparent conductive line located in the first transparent conductive layer 31, and a plurality (e.g., seven) green first light-emitting elements 131 away from the second display area A2 can be electrically connected to the first type of first pixel circuit 111 via a second transparent conductive line located in the second transparent conductive layer 32. All blue first light-emitting elements 133 in a group of first light-emitting elements 13 can be electrically connected to the first pixel circuit 11 via a third transparent conductive line located in the third transparent conductive layer 33. For example, the plurality of blue first light-emitting elements 133 closest to the second display area A2 are electrically connected to the third type of first pixel circuit 113, and the plurality of blue first light-emitting elements 133 away from the second display area A2 are electrically connected to the second type of first pixel circuit 112. All the red first light-emitting elements 132 in a group of first light-emitting elements 13 can be electrically connected to the first pixel circuit 11 through the second transparent conductive line located in the second transparent conductive layer 32. For example, the multiple red first light-emitting elements 132 closest to the second display area A2 are electrically connected to the third type of first pixel circuit 113, and the multiple red first light-emitting elements 132 away from the second display area A2 are electrically connected to the second type of first pixel circuit 112. However, this embodiment is not limited to this. In other examples, the red first light-emitting element can be electrically connected to the first pixel circuit through the third transparent conductive line located in the third transparent conductive layer, and the blue first light-emitting element can be electrically connected to the first pixel circuit through the second transparent conductive line located in the second transparent conductive layer. For other descriptions of this embodiment, please refer to the aforementioned Figure 7 The description of the embodiment shown is omitted here.

[0121] In this example, the blue first light-emitting element is electrically connected to the first pixel circuit using a conductive wire located in the same conductive layer, and the red first light-emitting element is electrically connected to the first pixel circuit using a conductive wire located in the same conductive layer. This can improve the brightness difference of the first light-emitting elements emitting light of the same color in the first display area caused by the change of conductive wire layers, thereby improving the display effect of the first display area.

[0122] Figure 13 FIG. 1 is another connection diagram of the first light emitting element and the first pixel circuit according to at least one embodiment of the present disclosure. Figure 13As shown, multiple (e.g., thirteen) green first light-emitting elements 131 in a group of first light-emitting elements 13 near the second display area A2 can be electrically connected to the first type of first pixel circuit 111 via a first transparent conductive line located in the first transparent conductive layer 31, while multiple (e.g., seven) green first light-emitting elements 131 away from the second display area A2 can be electrically connected to the first type of first pixel circuit 111 via a second transparent conductive line located in the second transparent conductive layer 32. All blue first light-emitting elements 133 in a group of first light-emitting elements 13 can be electrically connected to the first pixel circuit 11 using a third transparent conductive line located in the third transparent conductive layer 33 and a second transparent conductive line located in the second transparent conductive layer 32. For example, the conductive lines electrically connecting adjacent blue first light-emitting elements 133 can be located in different transparent conductive layers, and along the first direction D1 from the first display area A1 to the second display area A2, the multiple blue first light-emitting elements 133 are alternately electrically connected to the second transparent conductive line located in the second transparent conductive layer 32 and the third transparent conductive line located in the third transparent conductive layer 33. For example, adjacent blue first light-emitting elements 133 may first be electrically connected to the third transparent conductive line located in the third transparent conductive layer 33, and then to the second transparent conductive line located in the second transparent conductive layer 32. All red first light-emitting elements 132 in a group of first light-emitting elements 13 may be electrically connected to the first pixel circuit 11 using the third transparent conductive line located in the third transparent conductive layer 33 and the second transparent conductive line located in the second transparent conductive layer 32. For example, the conductive lines electrically connected to adjacent red first light-emitting elements 132 may be located in different transparent conductive layers, and along the first direction from the first display area to the second display area, the plurality of red first light-emitting elements 132 may be alternately electrically connected to the second transparent conductive line located in the second transparent conductive layer 32 and the third transparent conductive line located in the third transparent conductive layer 33. For example, adjacent red first light-emitting elements 132 may first be electrically connected to the third transparent conductive line located in the third transparent conductive layer 33, and then to the second transparent conductive line located in the second transparent conductive layer 32. In this example, the order of the transparent conductive layers to which the blue first light-emitting elements 133 are electrically connected may be the same as the order of the transparent conductive layers to which the red first light-emitting elements 132 are electrically connected. In other examples, in the first direction D1 from the first display area A1 to the second display area A2, adjacent blue first light-emitting elements 133 can be electrically connected to the second transparent conductive line located in the second transparent conductive layer 32 first, and then electrically connected to the third transparent conductive line located in the third transparent conductive layer 33; adjacent red first light-emitting elements 132 can be electrically connected to the second transparent conductive line located in the second transparent conductive layer 32 first, and then electrically connected to the third transparent conductive line located in the third transparent conductive layer 33. For other descriptions of this embodiment, please refer to the aforementioned Figure 7 The description of the embodiment shown is omitted here.

[0123] In this example, the blue first light-emitting elements are alternately electrically connected to the first pixel circuit through conductive lines located in adjacent transparent conductive layers, and the red first light-emitting elements are alternately electrically connected to the first pixel circuit through conductive lines located in adjacent transparent conductive layers. This can improve the brightness difference of the first light-emitting elements emitting light of the same color in the first display area caused by the switching of conductive lines, thereby improving the display effect of the first display area.

[0124] Figure 14 FIG. 1 is another connection diagram of the first light emitting element and the first pixel circuit according to at least one embodiment of the present disclosure. Figure 14As shown, multiple (e.g., thirteen) green first light-emitting elements 131 in a group of first light-emitting elements 13 near the second display area A2 can be electrically connected to the first type of first pixel circuit 111 via a first transparent conductive line located in the first transparent conductive layer 31, while multiple (e.g., seven) green first light-emitting elements 131 away from the second display area A2 can be electrically connected to the first type of first pixel circuit 111 via a second transparent conductive line located in the second transparent conductive layer 32. All blue first light-emitting elements 133 in a group of first light-emitting elements 13 can be electrically connected to the first pixel circuit 11 using a third transparent conductive line located in the third transparent conductive layer 33 and a second transparent conductive line located in the second transparent conductive layer 32. For example, the conductive lines electrically connecting adjacent blue first light-emitting elements 133 can be located in different transparent conductive layers, and along the first direction D1 from the first display area A1 to the second display area A2, the multiple blue first light-emitting elements 133 are alternately electrically connected to the third transparent conductive line located in the third transparent conductive layer 33 and the second transparent conductive line located in the second transparent conductive layer 32. For example, adjacent blue first light-emitting elements 133 may first be electrically connected to the second transparent conductive line located in the second transparent conductive layer 32, and then electrically connected to the third transparent conductive line located in the third transparent conductive layer 33. All red first light-emitting elements 132 in a group of first light-emitting elements 13 may be electrically connected to the first pixel circuit 11 using the third transparent conductive line located in the third transparent conductive layer 33 and the second transparent conductive line located in the second transparent conductive layer 32. For example, the conductive lines electrically connected to adjacent red first light-emitting elements 132 may be located in different transparent conductive layers, and along the first direction D1 from the first display area A1 to the second display area A2, the plurality of red first light-emitting elements 132 may be alternately electrically connected to the second transparent conductive line located in the second transparent conductive layer 32 and the third transparent conductive line located in the third transparent conductive layer 33. For example, adjacent red first light-emitting elements 132 may first be electrically connected to the third transparent conductive line located in the third transparent conductive layer 33, and then electrically connected to the second transparent conductive line located in the second transparent conductive layer 32. In this example, the order of the transparent conductive layers electrically connected to the blue first light-emitting element 133 and the order of the transparent conductive layers electrically connected to the red first light-emitting element 132 can be opposite. In other examples, in the first direction D1 from the first display area A1 to the second display area A2, adjacent blue first light-emitting elements 133 can be electrically connected to the third transparent conductive line located in the third transparent conductive layer 33 first, and then electrically connected to the second transparent conductive line located in the second transparent conductive layer 32; adjacent red first light-emitting elements 132 can be electrically connected to the second transparent conductive line located in the second transparent conductive layer 32 first, and then electrically connected to the third transparent conductive line located in the third transparent conductive layer 33. For other descriptions of this embodiment, please refer to the aforementioned Figure 7 The description of the embodiment shown is omitted here.

[0125] Figure 15 FIG. 1 is another connection diagram of the first light emitting element and the first pixel circuit according to at least one embodiment of the present disclosure. Figure 15 As shown, a plurality (e.g., thirteen) green first light-emitting elements 131 in a group of first light-emitting elements 13 near the second display area A2 can be electrically connected to the first type of first pixel circuit 111 via a first transparent conductive line located in the first transparent conductive layer 31, and a plurality (e.g., seven) green first light-emitting elements 131 far from the second display area A2 can be electrically connected to the first type of first pixel circuit 111 via a second transparent conductive line located in the second transparent conductive layer 32. All blue first light-emitting elements 133 in a group of first light-emitting elements 13 can be electrically connected to the first pixel circuit 11 via a third transparent conductive line located in the third transparent conductive layer 33. For example, the plurality of blue first light-emitting elements 133 farthest from the second display area A2 are electrically connected to the third type of first pixel circuit 113, and the plurality of blue first light-emitting elements 133 near the second display area A2 are electrically connected to the second type of first pixel circuit 112. All red first light-emitting elements 132 in a group of first light-emitting elements 13 can be electrically connected to the first pixel circuit 11 through the second transparent conductive line located in the second transparent conductive layer 32. For example, the multiple red first light-emitting elements 132 farthest from the second display area A2 are electrically connected to the third type of first pixel circuit 113, and the multiple red first light-emitting elements 132 close to the second display area A2 are electrically connected to the second type of first pixel circuit 112. However, this embodiment is not limited to this. In other examples, the red first light-emitting element can be electrically connected to the first pixel circuit through the third transparent conductive line located in the third transparent conductive layer, and the blue first light-emitting element can be electrically connected to the first pixel circuit through the second transparent conductive line located in the second transparent conductive layer. For other descriptions of this embodiment, please refer to the aforementioned Figure 11 The description of the embodiment shown is omitted here.

[0126] Figure 16 FIG. 1 is another connection diagram of the first light emitting element and the first pixel circuit according to at least one embodiment of the present disclosure. Figure 16As shown, multiple (e.g., thirteen) green first light-emitting elements 131 in a group of first light-emitting elements 13 near the second display area A2 can be electrically connected to the first type of first pixel circuit 111 via a first transparent conductive line located in the first transparent conductive layer 31, while multiple (e.g., seven) green first light-emitting elements 131 away from the second display area A2 can be electrically connected to the first type of first pixel circuit 111 via a second transparent conductive line located in the second transparent conductive layer 32. All blue first light-emitting elements 133 in a group of first light-emitting elements 13 can be electrically connected to the first pixel circuit 11 using a third transparent conductive line located in the third transparent conductive layer 33 and a second transparent conductive line located in the second transparent conductive layer 32. For example, the conductive lines electrically connecting adjacent blue first light-emitting elements 133 can be located in different transparent conductive layers, and along the first direction D1 from the first display area A1 to the second display area A2, the multiple blue first light-emitting elements 133 are alternately electrically connected to the second transparent conductive line located in the second transparent conductive layer 32 and the third transparent conductive line located in the third transparent conductive layer 33. For example, adjacent blue first light-emitting elements 133 may be first electrically connected to the third transparent conductive line located in the third transparent conductive layer 33, and then electrically connected to the second transparent conductive line located in the second transparent conductive layer 32. All red first light-emitting elements 132 in a group of first light-emitting elements 13 may be electrically connected to the first pixel circuit 11 by using the third transparent conductive line located in the third transparent conductive layer 33 and the second transparent conductive line located in the second transparent conductive layer 32. For example, the conductive lines electrically connected to adjacent red first light-emitting elements 132 may be located in different transparent conductive layers, and along the first direction D1 from the first display area A1 to the second display area A2, a plurality of red first light-emitting elements 132 are alternately electrically connected to the second transparent conductive line located in the second transparent conductive layer 32 and the third transparent conductive line located in the third transparent conductive layer 33. For example, adjacent red first light-emitting elements 132 may be first electrically connected to the third transparent conductive line located in the third transparent conductive layer 33, and then electrically connected to the second transparent conductive line located in the second transparent conductive layer 32. For other descriptions of this embodiment, please refer to the aforementioned Figure 11 The description of the embodiment shown is omitted here.

[0127] Figure 17 FIG. 1 is another connection diagram of the first light emitting element and the first pixel circuit according to at least one embodiment of the present disclosure. Figure 14As shown, multiple (e.g., thirteen) green first light-emitting elements 131 in a group of first light-emitting elements 13 near the second display area A2 can be electrically connected to the first type of first pixel circuit 111 via a first transparent conductive line located in the first transparent conductive layer 31, while multiple (e.g., seven) green first light-emitting elements 131 away from the second display area A2 can be electrically connected to the first type of first pixel circuit 111 via a second transparent conductive line located in the second transparent conductive layer 32. All blue first light-emitting elements 133 in a group of first light-emitting elements 13 can be electrically connected to the first pixel circuit 11 using a third transparent conductive line located in the third transparent conductive layer 33 and a second transparent conductive line located in the second transparent conductive layer 32. For example, the conductive lines electrically connecting adjacent blue first light-emitting elements 133 can be located in different transparent conductive layers, and along the first direction D1 from the first display area A1 to the second display area A2, the multiple blue first light-emitting elements 133 are alternately electrically connected to the third transparent conductive line located in the third transparent conductive layer 33 and the second transparent conductive line located in the second transparent conductive layer 32. For example, adjacent blue first light-emitting elements 133 may be first electrically connected to the second transparent conductive line located in the second transparent conductive layer 32, and then electrically connected to the third transparent conductive line located in the third transparent conductive layer 33. All red first light-emitting elements 132 in a group of first light-emitting elements 13 may be electrically connected to the first pixel circuit 11 by using the third transparent conductive line located in the third transparent conductive layer 33 and the second transparent conductive line located in the second transparent conductive layer 32. For example, the conductive lines electrically connected to adjacent red first light-emitting elements 132 may be located in different transparent conductive layers, and along the first direction D1 from the first display area A1 to the second display area A2, a plurality of red first light-emitting elements 132 are alternately electrically connected to the second transparent conductive line located in the second transparent conductive layer 32 and the third transparent conductive line located in the third transparent conductive layer 33. For example, adjacent red first light-emitting elements 132 may be first electrically connected to the third transparent conductive line located in the third transparent conductive layer 33, and then electrically connected to the second transparent conductive line located in the second transparent conductive layer 32. For other descriptions of this embodiment, please refer to the aforementioned Figure 11 The description of the embodiment shown is omitted here.

[0128] In the above embodiment, there is no limitation on the number of third-type first pixel circuits in a row of first pixel circuits. For example, the number of third-type first pixel circuits can be less than or equal to the number of second-type first pixel circuits. In addition, the above embodiment does not limit the positions of the first light-emitting elements emitting the second color light electrically connected to the third-type first pixel circuits. It is sufficient that the first light-emitting elements emitting the second color light electrically connected to the third-type first pixel circuits are arranged continuously. The first light-emitting elements emitting the second color light electrically connected to the third-type first pixel circuits are arranged continuously, which means that the first light-emitting elements emitting the second color light electrically connected to the third-type first pixel circuits are not arranged between the first light-emitting elements emitting the second color light electrically connected to the third-type first pixel circuits.

[0129] Figure 18 FIG. 1 is another connection diagram of the first light emitting element and the first pixel circuit according to at least one embodiment of the present disclosure. Figure 18 As shown, a plurality of (for example, thirteen) green first light-emitting elements 131 in a group of first light-emitting elements 13 close to the second display area A2 can be electrically connected to the first type of first pixel circuit 111 through the first transparent conductive line located in the first transparent conductive layer 31, and a plurality of (for example, seven) green first light-emitting elements 131 away from the second display area A2 can be electrically connected to the first type of first pixel circuit 111 through the second transparent conductive line located in the second transparent conductive layer 32. All blue first light-emitting elements 133 in a group of first light-emitting elements 13 can be electrically connected to the first pixel circuit 11 through the third transparent conductive line located in the third transparent conductive layer 33. All red first light-emitting elements 132 in a group of first light-emitting elements 13 can be electrically connected to the first pixel circuit 11 through the second transparent conductive line located in the second transparent conductive layer 32. However, this embodiment is not limited to this. In other examples, the red first light-emitting element can be electrically connected to the first pixel circuit through the third transparent conductive line located in the third transparent conductive layer, and the blue first light-emitting element can be electrically connected to the first pixel circuit through the second transparent conductive line located in the second transparent conductive layer. For other descriptions of this embodiment, please refer to the aforementioned Figure 5 , so I will not go into details here.

[0130] In this example, the blue first light-emitting element is electrically connected to the first pixel circuit using a conductive wire located in the same conductive layer, and the red first light-emitting element is electrically connected to the first pixel circuit using a conductive wire located in the same conductive layer. This can improve the brightness difference of the first light-emitting elements emitting light of the same color in the first display area caused by the change of conductive wire layers, thereby improving the display effect of the first display area.

[0131] Figure 19 Schematic diagram comparing capacitance curves of conductive lines according to at least one embodiment of the present disclosure. Figure 19The horizontal axis in represents the number of the plurality of blue and red first light-emitting elements in a row of first light-emitting elements. In this example, numbers 1 to 20 are the numbers of the green first light-emitting elements in a row of first light-emitting elements, and numbers 21 to 40 are the numbers of the blue and red first light-emitting elements in a row of first light-emitting elements. Among them, along the first direction from the first display area to the second display area, the numbers of the first light-emitting elements emitting light of the same color gradually increase. For example Figure 19 The solid dots in may represent the brightness of the ten red first light-emitting elements numbered 21, 23, 25, 27, 29, 31, 33, 35, 37 and 39, respectively. Figure 19 The solid line in Figure 18 The capacitance curve of the conductive line electrically connected to the red first light-emitting element of the embodiment shown, Figure 19 The dotted line in Figure 5 Capacitance curve of the conductive line electrically connected to the red first light-emitting element. Figure 19 The vertical axis represents the capacitance of the conductive line, in fF.

[0132] In some examples, such as Figure 5 and Figure 19 As shown by the dotted lines, in a row of first light-emitting elements, the red first light-emitting elements numbered 21, 23, 25, 27 and 29 are electrically connected to the second transparent conductive line located in the second transparent conductive layer, and the red first light-emitting elements numbered 31, 33, 35, 37 and 39 are electrically connected to the third transparent conductive line located in the third transparent conductive layer. The capacitance of the conductive lines connected to the red first light-emitting elements electrically connected to the second transparent conductive line and the red first light-emitting elements electrically connected to the third transparent conductive line are not in a linear relationship, but have abrupt changes, which easily lead to brightness differences and poor display in the first display area. Figure 18 and Figure 19 As shown by the solid line, in a row of first light-emitting elements, all red first light-emitting elements are electrically connected to the second transparent conductive line located in the second transparent conductive layer, and the conductive line capacitances of all red first light-emitting elements have a linear relationship, thereby improving the brightness difference caused by the conductive line layer switching and improving the brightness uniformity of the first light-emitting elements emitting light of the same color. Figure 18 After the connection method shown, in a row of first light-emitting elements, all blue first light-emitting elements are electrically connected to the third transparent conductive line located in the third transparent conductive layer. The conductive line capacitances of all blue first light-emitting elements have a linear relationship, which can improve the brightness difference caused by the conductive line layer change and improve the brightness uniformity of the first light-emitting elements emitting light of the same color.

[0133] Figure 20 FIG. 1 is another connection diagram of the first light emitting element and the first pixel circuit according to at least one embodiment of the present disclosure. Figure 20As shown, multiple (e.g., thirteen) green first light-emitting elements 131 in a group of first light-emitting elements 13 near the second display area A2 can be electrically connected to the first type of first pixel circuit 111 via a first transparent conductive line located in the first transparent conductive layer 31, and multiple (e.g., seven) green first light-emitting elements 131 away from the second display area A2 can be electrically connected to the first type of first pixel circuit 111 via a second transparent conductive line located in the second transparent conductive layer 32. All blue first light-emitting elements 133 in a group of first light-emitting elements 13 can be electrically connected to the first pixel circuit 11 using a third transparent conductive line located in the third transparent conductive layer 33 and a second transparent conductive line located in the second transparent conductive layer 32. For example, the conductive lines electrically connecting adjacent blue first light-emitting elements 133 can be located in different transparent conductive layers, and along a first direction from the first display area to the second display area, the multiple blue first light-emitting elements 133 are alternately electrically connected to the second transparent conductive line located in the second transparent conductive layer 32 and the third transparent conductive line located in the third transparent conductive layer 33. For example, adjacent blue first light-emitting elements 133 can be electrically connected to the third transparent conductive line located in the third transparent conductive layer 33 first, and then electrically connected to the second transparent conductive line located in the second transparent conductive layer 32. All red first light-emitting elements 132 in a group of first light-emitting elements 13 can be electrically connected to the first pixel circuit 11 by using the third transparent conductive line located in the third transparent conductive layer 33 and the second transparent conductive line located in the second transparent conductive layer 32. For example, the conductive lines electrically connected to adjacent red first light-emitting elements 132 can be located in different transparent conductive layers, and along the first direction from the first display area to the second display area, multiple red first light-emitting elements 132 are alternately electrically connected to the second transparent conductive line located in the second transparent conductive layer 32 and the third transparent conductive line located in the third transparent conductive layer 33. For example, adjacent red first light-emitting elements 132 can be electrically connected to the third transparent conductive line located in the third transparent conductive layer 33 first, and then electrically connected to the second transparent conductive line located in the second transparent conductive layer 32. For other descriptions of this embodiment, please refer to the aforementioned Figure 5 , so I will not go into details here.

[0134] In this example, the blue first light-emitting elements are alternately electrically connected to the first pixel circuit through conductive lines located in adjacent transparent conductive layers, and the red first light-emitting elements are alternately electrically connected to the first pixel circuit through conductive lines located in adjacent transparent conductive layers. This can improve the brightness difference of the first light-emitting elements emitting light of the same color in the first display area caused by the switching of conductive lines, thereby improving the display effect of the first display area.

[0135] Figure 21 FIG. 1 is another connection diagram of the first light emitting element and the first pixel circuit according to at least one embodiment of the present disclosure. Figure 21As shown, multiple (e.g., thirteen) green first light-emitting elements 131 in a group of first light-emitting elements 13 near the second display area A2 can be electrically connected to the first type of first pixel circuit 111 via a first transparent conductive line located in the first transparent conductive layer 31, and multiple (e.g., seven) green first light-emitting elements 131 away from the second display area A2 can be electrically connected to the first type of first pixel circuit 111 via a second transparent conductive line located in the second transparent conductive layer 32. All blue first light-emitting elements 133 in a group of first light-emitting elements 13 can be electrically connected to the first pixel circuit 11 using a third transparent conductive line located in the third transparent conductive layer 33 and a second transparent conductive line located in the second transparent conductive layer 32. For example, the conductive lines electrically connecting adjacent blue first light-emitting elements 133 can be located in different transparent conductive layers, and along a first direction from the first display area to the second display area, the multiple blue first light-emitting elements 133 are alternately electrically connected to the third transparent conductive line located in the third transparent conductive layer 33 and the second transparent conductive line located in the second transparent conductive layer 32. For example, adjacent blue first light-emitting elements 133 may be first electrically connected to the second transparent conductive line located in the second transparent conductive layer 32, and then electrically connected to the third transparent conductive line located in the third transparent conductive layer 33. All red first light-emitting elements 132 in a group of first light-emitting elements 13 may be electrically connected to the first pixel circuit 11 by using the third transparent conductive line located in the third transparent conductive layer 33 and the second transparent conductive line located in the second transparent conductive layer 32. For example, the conductive lines electrically connected to adjacent red first light-emitting elements 132 may be located in different transparent conductive layers, and along the first direction from the first display area to the second display area, a plurality of red first light-emitting elements 132 are alternately electrically connected to the second transparent conductive line located in the second transparent conductive layer 32 and the third transparent conductive line located in the third transparent conductive layer 33. For example, adjacent red first light-emitting elements 132 may be first electrically connected to the third transparent conductive line located in the third transparent conductive layer 33, and then electrically connected to the second transparent conductive line located in the second transparent conductive layer 32. For other descriptions of this embodiment, please refer to the aforementioned Figure 5 , so I will not go into details here.

[0136] This example can improve the brightness difference of the first light-emitting elements emitting light of the same color in the first display area caused by the layer change of the conductive line, thereby improving the display effect of the first display area.

[0137] At least one embodiment of the present disclosure further provides a display device including the display substrate as described above.

[0138] Figure 22 FIG. 1 is a schematic diagram of a display device according to at least one embodiment of the present disclosure. Figure 22As shown, this embodiment provides a display device including: a display substrate 91; and an optical sensor 92 located on a light-emitting side of a display structure layer away from the display substrate 91. The optical sensor 92 is located on the non-display surface side of the display substrate 91. The orthographic projection of the optical sensor 92 on the display substrate 91 overlaps with the first display area A1.

[0139] In some exemplary embodiments, the display substrate 91 may be a flexible OLED display substrate, a QLED display substrate, a Micro-LED display substrate, or a Mini-LED display substrate. The display device may be any product or component with a display function, such as an OLED display, a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, or a navigation system, although the embodiments of the present disclosure are not limited thereto.

[0140] The drawings in this disclosure only relate to the structures involved in this disclosure, and other structures may refer to the general design. In the absence of conflict, the embodiments of this disclosure, that is, the features in the embodiments, can be combined with each other to obtain new embodiments. It should be understood by those skilled in the art that the technical solutions of this disclosure can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of this disclosure, and should be included in the scope of the claims of this disclosure.

Claims

1. A display substrate, characterized in that: comprising a first display area and a second display area located at at least one side of the first display area; The display substrate comprises: a substrate, a circuit structure layer located on one side of the substrate, and a light emitting structure layer located on a side of the circuit structure layer away from the substrate; The circuit structure layer includes a plurality of first pixel circuits located in the second display area; the light-emitting structure layer includes a plurality of first light-emitting elements located in the first display area; at least one first pixel circuit among the plurality of first pixel circuits is electrically connected to at least one first light-emitting element among the plurality of first light-emitting elements, and is configured to drive the at least one first light-emitting element to emit light; The plurality of first light emitting elements include: a plurality of first light emitting elements emitting a first color light and a plurality of first light emitting elements emitting a second color light, wherein the first color light is different from the second color light; The plurality of first light-emitting elements include a plurality of groups of first light-emitting elements, wherein the plurality of first light-emitting elements in each group of first light-emitting elements are arranged along a first direction, and the plurality of groups of first light-emitting elements are arranged along a second direction, wherein the first direction intersects the second direction; The plurality of first light-emitting elements emitting second color light in at least one group of first light-emitting elements include: at least one first light-emitting element of a first type and at least one first light-emitting element of a second type; In the at least one group of first light-emitting elements, the first pixel circuit electrically connected to the at least one first-type first light-emitting element is located on a side of the first pixel circuit electrically connected to all first light-emitting elements emitting first color light that is close to the first display area; the first pixel circuit electrically connected to the at least one second-type first light-emitting element is located on a side of the first pixel circuit electrically connected to all first light-emitting elements emitting first color light that is away from the first display area.

2. The display substrate according to claim 1, wherein: The first pixel circuit electrically connected to the at least one second-type first light-emitting element in the at least one group of first light-emitting elements is a second-type first pixel circuit, and the first pixel circuit electrically connected to the at least one first-type first light-emitting element is a third-type first pixel circuit; among the first pixel circuits electrically connected to the at least one group of first light-emitting elements, the number of the third-type first pixel circuits is less than or equal to the number of the second-type first pixel circuits.

3. The display substrate according to claim 1, wherein A plurality of first pixel circuits electrically connected to all first light emitting elements emitting first color light in the at least one group of first light emitting elements are arranged in sequence along the first direction.

4. The display substrate according to claim 1, wherein The first type of first light-emitting elements in the at least one group of first light-emitting elements are located on a side of the second type of first light-emitting elements close to the second display area.

5. The display substrate according to claim 1, wherein The first type of first light-emitting elements in the at least one group of first light-emitting elements are located on a side of the second type of first light-emitting elements away from the second display area.

6. The display substrate according to claim 1, wherein: In the at least one group of first light-emitting elements, the first pixel circuit electrically connected to the first light-emitting element emitting the first color light close to the second display area is located on the side of the first pixel circuit electrically connected to the first light-emitting element emitting the first color light away from the second display area close to the first display area.

7. The display substrate according to claim 1, wherein: In the at least one group of first light-emitting elements, the first pixel circuit electrically connected to the first type of first light-emitting element close to the second display area is located on a side of the first pixel circuit electrically connected to the first type of first light-emitting element away from the second display area close to the first display area; the first pixel circuit electrically connected to the second type of first light-emitting element close to the second display area is located on a side of the first pixel circuit electrically connected to the second type of first light-emitting element away from the second display area close to the first display area.

8. The display substrate according to any one of claims 1 to 7, characterized in that: The display substrate further includes: a plurality of conductive layers located between the circuit structure layer and the light-emitting structure layer, the plurality of conductive layers including a plurality of conductive lines; the at least one first pixel circuit is electrically connected to the at least one first light-emitting element via the at least one conductive line; the plurality of first light-emitting elements emitting second color light in the first display area include: a plurality of blue first light-emitting elements and a plurality of red first light-emitting elements; the plurality of conductive lines electrically connected to the plurality of blue first light-emitting elements are located in the same conductive layer, or in two adjacent conductive layers; The plurality of conductive lines electrically connected to the plurality of first red light-emitting elements are located in the same conductive layer, or in two adjacent conductive layers.

9. The display substrate according to claim 8, wherein: The multiple conductive layers include: a first transparent conductive layer, a second transparent conductive layer, and a third transparent conductive layer which are sequentially arranged along a side away from the substrate.

10. The display substrate according to claim 9, wherein: The plurality of conductive lines electrically connected to the plurality of red first light-emitting elements are located in the second transparent conductive layer, and the plurality of conductive lines electrically connected to the plurality of blue first light-emitting elements are located in the third transparent conductive layer.

11. The display substrate according to claim 9, wherein In the first direction from the first display area to the second display area, the multiple conductive lines electrically connected to the multiple red first light-emitting elements in the at least one group of first light-emitting elements are alternately located in the second transparent conductive layer and the third transparent conductive layer; the multiple conductive lines electrically connected to the multiple blue first light-emitting elements are alternately located in the second transparent conductive layer and the third transparent conductive layer.

12. The display substrate according to claim 11, wherein: The order in which the multiple conductive lines electrically connected to the multiple red first light-emitting elements in the at least one group of first light-emitting elements are arranged in the second transparent conductive layer and the third transparent conductive layer is the same as the order in which the multiple conductive lines electrically connected to the multiple blue first light-emitting elements are arranged in the second transparent conductive layer and the third transparent conductive layer.

13. The display substrate according to claim 11, wherein: The order in which the multiple conductive lines electrically connected to the multiple red first light-emitting elements in the at least one group of first light-emitting elements are arranged in the second transparent conductive layer and the third transparent conductive layer is opposite to the order in which the multiple conductive lines electrically connected to the multiple blue first light-emitting elements are arranged in the second transparent conductive layer and the third transparent conductive layer.

14. A display device, characterized in that: The device comprises a display substrate according to any one of claims 1 to 13, and an optical sensor located on a non-display surface side of the display substrate, wherein the orthographic projection of the optical sensor on the display substrate overlaps with the first display area of the display substrate.

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