Display panel and display device

Abstract

The embodiment of the invention discloses a display panel and a display device. The display panel comprises a display area and a non-display area at least partially surrounding the display area. At least one pixel unit; the initialization lines are connected with the pixel units; the at least one initialization line comprises at least one step structure, and the step structure is located in the display area; the step structure comprises a first conductive part and a second conductive part which are connected, the first conductive part extends along a first direction, the second conductive part extends along a second direction, and the first direction and the second direction are crossed; and the pixel units connected with the at least two step structures of the same initialization line are in different rows. According to the technical scheme provided by the embodiment, the display uniformity of the display device is improved.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] With the development of display technology, people have higher and higher requirements on display panels. Existing display panels have the problem of poor display effect, which affects the display effect of the display panel. Summary of the invention

[0003] Embodiments of the present invention provide a display panel and a display device to solve the problem of poor display effect of the display panel.

[0004] In order to achieve the above technical problems, the present invention adopts the following technical solutions:

[0005] An embodiment of the present invention provides a display panel, the display panel comprising a display area and a non-display area at least partially surrounding the display area;

[0006] at least one pixel unit;

[0007] At least one initialization line connected to the pixel unit;

[0008] At least one initialization line includes at least one step structure, and the step structure is located in the display area;

[0009] The step structure includes a first conductive portion and a second conductive portion connected to each other, the first conductive portion extends along a first direction, the second conductive portion extends along a second direction, and the first direction and the second direction intersect;

[0010] The pixel units connected to at least two stepped structures of the same initialization line are in different rows.

[0011] Optionally, the pixel units connected to two adjacent step structures of the same initialization line are in different rows;

[0012] Preferably, the angle between the first conductive portion and the second conductive portion located in the same step structure is greater than or equal to 90° and less than 180°.

[0013] Optionally, the first direction extends along a row direction of the pixel units;

[0014] The pixel unit is connected to the first conductive portion of the step structure;

[0015] Preferably, the number of pixel units connected to the first conductive portion of each step structure is greater than or equal to 1 and less than or equal to 10;

[0016] Preferably, the number of pixel units connected to the first conductive parts of the same initialization line is equal;

[0017] Preferably, the numbers of pixel units connected to the first conductive parts of two adjacent initialization lines are equal.

[0018] Optionally, along the second direction, the position height of the step structure increases successively; or,

[0019] Along the second direction, the height of the step structure decreases successively; or,

[0020] Along the second direction, the height of the step structure increases first and then decreases; or,

[0021] Along the second direction, the position height of the step structure first decreases and then increases.

[0022] Optionally, along the first direction, at least two of the first conductive portions have different lengths; or, along the first direction, the first conductive portions have the same lengths;

[0023] Preferably, along the first direction, the length of the first conductive portion increases successively;

[0024] Preferably, along the first direction, the length of the first conductive portion decreases successively;

[0025] Preferably, along the first direction, the length of the first conductive portion first increases, then decreases, and then increases again;

[0026] Preferably, along the first direction, the length of the first conductive portion first decreases and then increases.

[0027] Optionally, along the second direction, the heights of the second conductive parts are all equal;

[0028] Preferably, along the second direction, a height of the second conductive portion is equal to a height of the pixel unit.

[0029] Optionally, the display panel also includes:

[0030] At least two initialization signal lines are arranged in the non-display area, and the initialization signal lines are arranged on two opposite sides of the display area respectively;

[0031] The initialization line is connected to at least one initialization signal line.

[0032] Optionally, along the first direction, when the length of the initialization line is less than or equal to half the width of the display area, the initialization line is connected to the nearest initialization signal line; and / or,

[0033] When the length of the initialization line is greater than half the width of the display area along the first direction, the initialization line is connected to two initialization signal lines;

[0034] Preferably, two initialization signal lines connected to the same initialization line are located in non-display areas on two opposite sides of the display area.

[0035] Optionally, the line width of the initialization line is greater than or equal to 2 μm and less than or equal to 4 μm;

[0036] Preferably, the width of the first conductive portion is equal to the width of the second conductive portion.

[0037] Optionally, the initialization line includes a first initialization line and a second initialization line;

[0038] The pixel unit includes: a light emitting element, a driving module, a first initialization module and a second initialization module;

[0039] The driving module is connected between the first power supply terminal and the light emitting element, the first terminal of the first initialization module is connected to the first initialization line, and the second terminal of the first initialization module is connected to the control terminal of the driving module;

[0040] The second initialization module is connected between the second initialization line and the first electrode of the light emitting element, and the second electrode of the light emitting element is connected to the second power supply terminal;

[0041] At least one of the first initialization line and the second initialization line includes a step structure;

[0042] Preferably, the first initialization line and the second initialization line are parallel to each other;

[0043] Preferably, the first initialization line and the second initialization line have the same line width.

[0044] Optionally, the initialization line further includes a third initialization line;

[0045] The pixel unit further includes a third initialization module; the third initialization module is connected between the first end of the driving module and the third initialization line;

[0046] The third initialization line includes at least one step structure;

[0047] Preferably, the third initialization line is parallel to the first initialization line and the second initialization line;

[0048] Preferably, the line widths of the first initialization line, the second initialization line and the third initialization line are the same.

[0049] According to another aspect of the present invention, this embodiment provides a display device, which includes the display panel proposed in any item of the first aspect.

[0050] The display panel provided by the embodiment of the present invention includes at least one step structure by setting an initialization line. The step structure includes a first conductive portion and a second conductive portion connected. The pixel units connected to at least two step structures of the same initialization line are located in different rows, so that when the pixel units connected to the steps are initialized row by row, at the same time, the pixel units located in the same row are provided with initialization voltages by different initialization lines. For the same initialization line, the number of pixel units that need to be reset at the same time is less than the number of pixel units in each row of the display panel. At the same time, the number of pixel units connected to each initialization line that need to be reset is small, which reduces the load of the initialization line, improves the uniformity of the initialization voltage transmitted on the initialization line, improves the uniformity of the display panel, and thus improves the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0052] Figure 1 is a schematic structural diagram of a display panel provided by an embodiment of the present invention;

[0053] Figure 2 is a schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0054] Figure 3 is a structural schematic diagram of another display panel provided by an embodiment of the present invention;

[0055] Figure 4 is a structural schematic diagram of another display panel provided by an embodiment of the present invention;

[0056] Figure 5 is a structural schematic diagram of another display panel provided by an embodiment of the present invention;

[0057] Figure 6 is a structural schematic diagram of another display panel provided by an embodiment of the present invention;

[0058] Figure 7 is a structural schematic diagram of another display panel provided by an embodiment of the present invention;

[0059] Figure 8 is a structural schematic diagram of another display panel provided by an embodiment of the present invention;

[0060] Fig. 9is a schematic structural diagram of a pixel unit of a display panel provided by an embodiment of the present invention;

[0061] Fig.10 is a structural schematic diagram of another display panel provided by an embodiment of the present invention;

[0062] Fig.11 is a schematic structural diagram of a pixel unit of another display panel provided by an embodiment of the present invention;

[0063] Fig.12 It is a structural schematic diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0064] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0065] Based on the above technical problems, this embodiment proposes the following solutions:

[0066] Figure 1 is a schematic diagram of the structure of a display panel provided by an embodiment of the present invention. Figure 1 The display panel 100 provided by the embodiment of the present invention includes a display area AA and a non-display area NA at least partially surrounding the display area AA; at least one pixel unit 1; at least one initialization line 2, the initialization line 2 is connected to the pixel unit 1; at least one initialization line 2 includes at least one step structure 21, the step structure 21 is located in the display area AA; the step structure 21 includes a first conductive portion 211 and a second conductive portion 212 connected, the first conductive portion 211 extends along a first direction X, the second conductive portion 212 extends along a second direction Y, and the first direction X and the second direction Y intersect; the pixel units 1 connected to at least two step structures 21 of the same initialization line 2 are located in different rows.

[0067] Specifically, the display area AA is provided with a pixel unit 1. The pixel unit 1 includes a pixel driving circuit and a light-emitting element D1. The light-emitting element D1 is provided in the display area AA. The display area AA is used to display images. The non-display area NA may at least partially surround the display area AA. The non-display area NA may include a border area of ​​the display panel 100. When the display panel 100 is a full-screen display panel, the non-display area NA may be provided at a position such as the back side of the display area AA.

[0068] The initialization line 2 is at least partially located in the display area AA. The initialization line 2 is connected to the pixel unit 1, and the initialization line 2 is used to transmit an initialization voltage. The initialization voltage is used to transmit a voltage to the pixel driving circuit of the pixel unit 1 during the initialization phase to initialize the voltage of the control end of the driving module 10 of the pixel driving circuit. The initialization line 2 is also used to initialize the first pole of the light-emitting element D1, such as the anode. The initialization voltage is generally a negative voltage.

[0069] At least one initialization line 2 is provided in the display area AA, including at least one step structure 21. The step structure 21 includes a first conductive portion 211 and a second conductive portion 212 connected. The first conductive portion 211 extends along a first direction X. The second conductive portion 212 extends along a second direction Y. The first direction X and the second direction Y intersect. Exemplarily, the first direction X may be a row direction of the pixel unit 1, and the second direction Y may be a direction at a certain angle to the first direction X, for example, a column direction of the pixel unit 1.

[0070] The pixel units 1 connected to at least two step structures 21 of the same initialization line 2 are arranged in different rows. The pixel units 1 of the same row are reset through at least two initialization lines 2. That is to say, when the pixel units 1 of the display panel 100 are initialized row by row, at the same time, the number of pixel units 1 connected to each initialization line 2 that need to be reset is very small. This arrangement reduces the load of the initialization line 2, so that the initialization line 2 does not need a large current, thereby reducing the voltage drop of the initialization voltage, improving the uniformity of the initialization voltage transmitted on the initialization line 2, and improving the display effect of the display panel 100.

[0071] The display panel 100 provided in this embodiment includes at least one step structure 21 by setting the initialization line 2. The step structure 21 includes a first conductive portion 211 and a second conductive portion 212 connected. The pixel units 1 connected to at least two step structures 21 of the same initialization line 2 are located in different rows, so that when the pixel units 1 connected to the steps are initialized row by row, at the same moment, the pixel units 1 located in the same row are provided with initialization voltages by different initialization lines 2. For the same initialization line 2, the number of pixel units 1 that need to be reset at the same moment is less than the number of pixel units 1 in each row of the display panel 100. At the same moment, the number of pixel units 1 connected to each initialization line 2 that need to be reset is small, which reduces the load of the initialization line 2, improves the uniformity of the initialization voltage transmitted on the initialization line 2, improves the uniformity of the display panel 100, and further improves the display effect of the display panel.

[0072] Optional, Figure 2 is a schematic diagram of the structure of another display panel provided by an embodiment of the present invention. Figure 2Based on the above embodiment, two adjacent step structures 21 of the same initialization line 2 connect pixel units 1 in different rows.

[0073] Specifically, the pixel units 1 connected to two adjacent step structures 21 are located in different rows of pixel units 1. The pixel units 1 in the same row are reset through at least two initialization lines 2. That is to say, when the pixel units 1 of the display panel 100 are initialized row by row, at the same time, the number of pixel units 1 that need to be reset in the pixel units 1 connected to each initialization line 2 is relatively small. This arrangement reduces the load of the initialization line 2, so that the initialization line 2 does not need a large current, thereby further reducing the voltage drop of the initialization voltage, further improving the uniformity of the initialization voltage transmitted on the initialization line 2, and further improving the display effect of the display panel 100.

[0074] Optionally, the angle θ between the first conductive portion 211 and the second conductive portion 212 located in the same step structure 21 is greater than or equal to 90° and less than 180°.

[0075] Specifically, such a configuration can not only ensure sufficient wiring space when connecting the first conductive portion 211 and the pixel unit 1, but also shorten the length of the initialization line 2 after the first conductive portion 211 and the second conductive portion 212 are connected, which is beneficial to reducing the resistance of the initialization line 2, further reducing the voltage drop of the initialization voltage transmitted on the initialization line 2, improving the uniformity of initialization of the pixel unit 1, and further improving the display effect of the display panel.

[0076] Optional, continue to see Figure 2 On the basis of the above embodiment, the first direction X extends along the row direction of the pixel unit 1 ; the pixel unit 1 is connected to the first conductive portion 211 of the step structure 21 .

[0077] Specifically, such an arrangement enables the pixel unit 1 to be connected to the first conductive portion 211 of the initialization line 2 in the row direction. On the one hand, such an arrangement occupies less wiring space for the initialization line 2. On the other hand, such an arrangement facilitates compatibility with existing processes and reduces manufacturing costs.

[0078] Optionally, based on the above embodiment, continue to refer to Figure 2 , the number of pixel units 1 connected to the first conductive portion 211 of each stepped structure 21 is greater than or equal to 1 and less than or equal to 10.

[0079] Specifically, such an arrangement makes it possible that when the pixel units 1 of the display panel 100 are initialized row by row, at the same time, the number of pixel units 1 connected to each initialization line 2 that need to be reset is less than 10, which is a good improvement to reduce the load on the initialization line 2, further improve the uniformity of the initialization voltage of the pixel unit 1, and further improve the display effect of the display panel.

[0080] Optionally, based on the above embodiment, continue to refer to Figure 2 , the number of pixel units 1 connected to each first conductive portion 211 of the same initialization line 2 is equal.

[0081] Specifically, such an arrangement can ensure that the number of pixel units 1 connected to the first conductive portion 211 of each step structure 21 on the same initialization line 2 is the same, so that the load of each step structure 21 is the same, further improving the uniformity of the initialization voltage transmitted from the initialization line 2 to the pixel unit 1, and further improving the display effect of the display panel 100.

[0082] Optionally, based on the above embodiment, continue to refer to Figure 2 , the number of pixel units 1 connected to each first conductive portion 211 of two adjacent initialization lines 2 is equal.

[0083] Specifically, such an arrangement makes the initialization voltages between adjacent initialization lines 2 relatively uniform. In addition, such an arrangement is convenient for reducing the design difficulty and saving the process cost.

[0084] Optional, Figure 3 It is a structural schematic diagram of another display panel provided by an embodiment of the present invention. Figure 4 It is a structural schematic diagram of another display panel provided by an embodiment of the present invention. Figure 5 FIG. 1 is a schematic diagram of the structure of another display panel provided by an embodiment of the present invention. Figure 2 , along the second direction Y, the position height of the step structure 21 increases successively; or, see Figure 3 , along the second direction Y, the height of the step structure 21 decreases successively; or, see Figure 4 , along the second direction Y, the height of the step structure 21 increases first and then decreases; or, see Figure 5 , along the second direction Y, the position height of the step structure 21 first decreases and then increases.

[0085] Specifically, the position height of the step structure 21 refers to the distance from the lowest point of the step structure 21 to the lower frame of the display panel 100. The position height of the step structure 21 can be changed as needed. Along the second direction Y, when the position height of the step structure 21 is increased first and then decreased, or the position height of the step structure 21 is decreased first and then increased, the symmetry of the initialization line 2 is better, which is convenient for saving manufacturing processes.

[0086] Along the second direction Y, when the height of the position of the step structure 21 is increased successively, or when the height of the position of the step structure 21 is decreased successively, when the initialization line 2 initializes the pixel unit 1, fewer pixel units 1 need to be initialized, further ensuring that no large current is required on each initialization line 2, and the voltage drop of the initialization voltage is small. This arrangement can further improve the uniformity of the initialization voltage transmitted from the initialization line 2 to the pixel unit 1, and further improve the display effect of the display panel 100.

[0087] Optional, Figure 6 FIG. 1 is a schematic diagram of the structure of another display panel provided by an embodiment of the present invention. Figure 6 , along the first direction X, the lengths of at least two first conductive parts 211 are different; or, along the first direction X, the lengths of the first conductive parts 211 are all equal. Preferably, along the first direction X, the lengths of the first conductive parts 211 increase successively; or, along the first direction X, the lengths of the first conductive parts 211 decrease successively; or, along the first direction X, the lengths of the first conductive parts 211 increase first, then decrease, and then increase again; or, along the first direction X, the lengths of the first conductive parts 211 decrease first, then increase; or, along the first direction X, the lengths of the first conductive parts 211 are all equal. Optionally, the heights of the second conductive parts 212 along the second direction Y may be set to be all equal. Preferably, along the second direction Y, the height of the second conductive part 212 is equal to the height of the pixel unit 1.

[0088] Specifically, such a setting can reasonably select the length of the first conductive portion 211 and the length of the second conductive portion 212 of the initialization line 2 according to the design space of the layout of the display panel. Since the voltage drop of the pixel unit 1 close to the non-display area NA of the display panel 100 is small, the voltage drop of the pixel unit 1 located in the middle of the display panel 100 is large due to the long initialization line 2. The length of the first conductive portion 211 close to the non-display area NA of the display panel 100 can be set to be longer, and the length of the first conductive portion 211 close to the middle of the display panel 100 can be set to be shorter. The first conductive portion 211 with a longer length is convenient for connecting a larger number of pixel units 1. The first conductive portion 211 with a shorter length is convenient for connecting a smaller number of first conductive portions 211, which further improves the uniformity of the pixel unit 1 receiving the conductive initialization voltage.

[0089] Optional, Figure 7 FIG. 1 is a schematic diagram of the structure of another display panel provided by an embodiment of the present invention. Figure 7 The display panel 100 also includes: at least two initialization signal lines 3 arranged in the non-display area NA, the initialization signal lines 3 are respectively arranged on two opposite sides of the display area AA; the initialization line 2 is connected to the at least one initialization signal line 3.

[0090] Specifically, such an arrangement facilitates the transmission of the initialization voltage to the initialization line 2 located in the display area AA through the initialization signal line 3 .

[0091] Optionally, based on the above embodiment, continue to refer to Figure 7 When the length of the initialization line 2 along the first direction X is less than or equal to half the width of the display area AA, the initialization line 2 is connected to the nearest initialization signal line 3; and / or when the length of the initialization line 2 along the first direction X is greater than half the width of the display area AA, the initialization line 2 is connected to two initialization signal lines 3; preferably, the two initialization signal lines 3 connected to the same initialization line 2 are located in the non-display area NA on opposite sides of the display area AA.

[0092] Specifically, such an arrangement further improves the uniformity of the initialization voltage transmitted from the initialization line 2 to the pixel unit 1 , and further improves the display effect of the display panel 100 .

[0093] Optionally, based on the above embodiment, continue to refer to Figure 7 , the line width of the initialization line 2 is greater than or equal to 2 μm and less than or equal to 4 μm; preferably, the width of the first conductive portion 211 is equal to the width of the second conductive portion 212 .

[0094] Specifically, if the width of the initialization line 2 is too wide, it is easy to cause insufficient wiring space, and if the width of the initialization line 2 is too narrow, it will cause a large resistance of the initialization line 2. The width of the initialization line 2 is set to be greater than or equal to 2μm and less than or equal to 4μm, so that the impedance of the initialization line 2 is small, and the uniformity of the initialization voltage is further improved. The width of the first conductive part 211 is equal to the width of the second conductive part 212, which can reduce the difficulty of the manufacturing process.

[0095] Optional, Figure 8 It is a structural schematic diagram of another display panel provided by an embodiment of the present invention. Fig. 9 FIG. 1 is a schematic diagram of a pixel unit of a display panel provided by an embodiment of the present invention. Figure 8 and Fig. 9, the initialization line 2 includes a first initialization line Vref1 and a second initialization line Vref2; the pixel unit 1 includes: a light-emitting element D1, a driving module 10, a first initialization module 20 and a second initialization module 30; the driving module 10 is connected between the first power supply terminal ELVDD and the light-emitting element D1, the first end of the first initialization module 20 is connected to the first initialization line Vref1, and the second end of the first initialization module 20 is connected to the control end of the driving module 10; the second initialization module 30 is connected between the second initialization line Vref2 and the first pole of the light-emitting element D1, and the second pole of the light-emitting element D1 is connected to the second power supply terminal ELVSS; at least one of the first initialization line Vref1 and the second initialization line Vref2 includes a step structure 21.

[0096] Specifically, the driving module 10 includes a driving transistor T1. The light-emitting element D1 includes a light-emitting diode. The first initialization module 20 includes a first switch tube T4. The second initialization module 30 includes a second switch tube T7. The control end of the first initialization module 20 is used to input a first scan signal Scan1. The control end of the second initialization module 30 is used to input a second scan signal Scan2. In the initialization stage, the first initialization line Vref1 inputs an initialization voltage to the control end of the driving module 10 through the turned-on first initialization module 20. In the initialization stage, the second initialization module 30 transmits an initialization voltage to a first pole, such as an anode, of the light-emitting element D1.

[0097] At least one of the first initialization line Vref1 and the second initialization line Vref2 may be configured to include the step structure 21. Alternatively, both of the first initialization line Vref1 and the second initialization line Vref2 may be configured to include the step structure 21.

[0098] The first initialization line Vref1 is set to include a step structure 21, so that the initialization voltage transmitted by the first initialization line Vref1 to the gate of the driving module 10 is more uniform, so that the initialization voltages of the driving modules 10 of the pixel units 1 located in the same row are as similar as possible, thereby improving the display uniformity of the display panel. The second initialization line Vref2 is set to include a step structure 21, so that the initialization voltage transmitted by the second initialization line Vref2 to the first electrode of the light-emitting element D1 is more uniform, so that the initialization voltages of the driving modules 10 of the pixel units 1 located in the same row are as similar as possible, further improving the display uniformity of the display panel.

[0099] Optionally, based on the above embodiment, continue to refer to Figure 8 The first initialization line Vref1 and the second initialization line Vref2 are parallel to each other. Optionally, the first initialization line Vref1 and the second initialization line Vref2 have the same line width.

[0100] Specifically, the first initialization line Vref1 and the second initialization line Vref2 can be configured in the same layer or in different layers using the same process. The first initialization line Vref1 and the second initialization line Vref2 can have the same line width, which is simple in design and manufacturing process, and is easy to reduce costs.

[0101] Optional, Fig.10 It is a structural schematic diagram of another display panel provided by an embodiment of the present invention. Fig.11 FIG. 1 is a schematic diagram of a pixel unit structure of another display panel provided by an embodiment of the present invention. Fig.10 and Fig.11 , the initialization line 2 further includes a third initialization line Vref3; the pixel unit 1 further includes a third initialization module 80; the third initialization module 80 is connected between the first end of the driving module 10 and the third initialization line Vref3; the third initialization line Vref3 includes at least one step structure 21.

[0102] Specifically, the third initialization module 80 includes a third switch tube T8. The control end of the third initialization module 80 is used to input the second scan signal Scan2. In the initialization stage, the third initialization module 80 is used to transmit an initialization voltage to the first pole, such as the source pole, of the driving module 10. By setting the third initialization line Vref3 to include at least one step structure 21, when the third initialization line Vref3 performs row-by-row initialization on the first pole of the driving module 10 of the pixel unit 1, at the same time, the number of pixel units 1 connected to each third initialization line Vref3 that need to be reset is very small. In this way, the load of the third initialization line Vref3 is reduced, so that the third initialization line Vref3 does not need a large current, thereby reducing the voltage drop of the third initialization voltage, improving the uniformity of the initialization voltage transmitted on the third initialization line Vref3, and further improving the display effect of the display panel 100.

[0103] Optionally, the third initialization line Vref3 is parallel to the first initialization line Vref1 and the second initialization line Vref2. Optionally, the first initialization line Vref1, the second initialization line Vref2 and the third initialization line Vref3 have the same line width.

[0104] Specifically, the first initialization line Vref1, the second initialization line Vref2, and the third initialization line Vref3 can be configured in the same layer or in different layers using the same process. The line widths of the first initialization line Vref1, the second initialization line Vref2, and the third initialization line Vref3 are configured to be the same, which is simple in design and manufacturing process, and is convenient for further reducing the process cost of the display panel 100.

[0105] An optional implementation method, see Fig. 9 and Fig.11 , the pixel circuit further includes: a data writing module 40 and a compensation module 50. The first initialization module 20 and the compensation module 50 are both electrically connected to the gate of the driving transistor T1. The first initialization module 20 is used to transmit the initialization voltage to the gate of the driving transistor T1 during the initialization phase. The data writing module 40 is used to write the data voltage Vdata to the gate of the driving transistor T1 during the data writing phase. The compensation module 50 is used to write information including the threshold voltage of the driving transistor T1 to the gate of the driving transistor T1 during the data writing phase. The driving transistor T1 is used to generate a driving signal according to the voltage of its own gate to drive the light-emitting element D1 to emit light during the light-emitting phase. The first initialization module 20 and the compensation module 50 are used to be turned off according to the control signal to maintain the voltage of the gate of the driving transistor T1. The data writing module 40 includes a fourth switch tube T2, and the compensation module 50 includes a fifth switch tube T3. The control end of the fourth switch tube T2 and the control end of the fifth switch tube T3 are both connected to the third scan signal Scan3.

[0106] Another optional implementation method, see Fig. 9 and Fig.11 The pixel circuit provided by the embodiment of the present invention may further include: a leakage suppression module (not shown in the figure), the first end of the leakage suppression module is connected to the gate of the driving transistor T1, the second end of the leakage suppression module is connected to the second end of the first initialization module 20 and the first end of the compensation module 50 at the first node. The control end of the leakage suppression module is connected to the compensation control signal. The leakage suppression module is used to transmit the initialization voltage to the gate of the driving transistor T1 during the initialization phase. In the data writing phase, information containing the threshold voltage of the driving transistor T1 is written to the gate of the driving transistor T1. The leakage suppression module may include a leakage suppression transistor, the first end of the leakage suppression transistor is connected to the gate of the driving transistor T1, the second end of the leakage suppression transistor is electrically connected to the first node, and the control end of the leakage suppression transistor is connected to the compensation control signal.

[0107] Another optional implementation method, see Fig. 9 and Fig.11The pixel circuit provided in the embodiment of the present invention may further include: a light emitting control module 60, wherein the control end of the light emitting control module 60 is connected to the light emitting control signal EM. The light emitting control module 60 includes a first light emitting control transistor T5 and a second light emitting control transistor T6. When the first light emitting control transistor T5 and the second light emitting control transistor T6 are turned on according to the light emitting control signal EM connected to their control ends, the driving transistor T1 generates a driving signal according to the voltage of its own gate in the light emitting stage to drive the light emitting element D1 to emit light. The light emitting element D1 includes a light emitting device. The light emitting device D1 may be an organic light emitting device or an inorganic light emitting device, which is not specifically limited in this embodiment.

[0108] Another optional implementation method, see Fig. 9 and Fig.11 The pixel circuit provided in the embodiment of the present invention may further include: a storage module 70. A first end of the storage module 70 is connected to the first power supply voltage input end, and a second end of the storage module 70 is connected to the gate of the driving transistor T1. The storage module 70 includes a first capacitor Cst, and the first capacitor Cst is used to store electric energy and stabilize the gate potential of the driving transistor T1.

[0109] This embodiment provides a display device. Fig.12 is a schematic diagram of the structure of a display device provided by an embodiment of the present invention. Fig.12 The display device 200 provided in this embodiment includes the display panel 100 provided in any of the above embodiments, and has the beneficial effects of the display panel 100 provided in any of the above embodiments, which will not be described in detail here. The display device 200 provided in this embodiment may include a mobile terminal such as a mobile phone, a computer or a wearable device.

[0110] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that: include: a display area and a non-display area at least partially surrounding the display area; at least one pixel unit; at least one initialization line, wherein the initialization line is connected to the pixel unit; At least one of the initialization lines comprises at least one step structure, and the step structure is located in the display area; The step structure includes a first conductive portion and a second conductive portion connected to each other, the first conductive portion extends along a first direction, the second conductive portion extends along a second direction, and the first direction and the second direction intersect; The pixel units connected to at least two stepped structures of the same initialization line are in different rows.

2. The display panel according to claim 1, characterized in that: The pixel units connected by two adjacent step structures of the same initialization line are in different rows; Preferably, the angle between the first conductive portion and the second conductive portion located in the same step structure is greater than or equal to 90° and less than 180°.

3. The display panel according to claim 1, characterized in that: The first direction extends along a row direction of the pixel units; The pixel unit is connected to the first conductive portion of the step structure; Preferably, the number of the pixel units connected to the first conductive portion of each step structure is greater than or equal to 1 and less than or equal to 10; Preferably, the number of pixel units connected to each of the first conductive parts of the same initialization line is equal; Preferably, the numbers of the pixel units connected to the first conductive parts of two adjacent initialization lines are equal.

4. The display panel according to claim 1, characterized in that: Along the second direction, the position height of the step structure increases successively; or, Along the second direction, the position height of the step structure decreases successively; or, Along the second direction, the height of the step structure increases first and then decreases; or, Along the second direction, the position height of the step structure decreases first and then increases.

5. The display panel according to claim 1, characterized in that: Along the first direction, at least two of the first conductive parts have different lengths; or, along the first direction, the first conductive parts have the same lengths; Preferably, along the first direction, the length of the first conductive portion increases successively; Preferably, along the first direction, the length of the first conductive portion decreases successively; Preferably, along the first direction, the length of the first conductive portion first increases, then decreases, and then increases again; Preferably, along the first direction, the length of the first conductive portion first decreases and then increases.

6. The display panel according to claim 1, characterized in that: Along the second direction, the heights of the second conductive parts are all equal; Preferably, along the second direction, a height of the second conductive portion is equal to a height of the pixel unit.

7. The display panel according to claim 1, characterized in that: The display panel further includes: At least two initialization signal lines are arranged in the non-display area, and the initialization signal lines are arranged on two opposite sides of the display area respectively; The initialization line is connected to at least one of the initialization signal lines; Preferably, along the first direction, when the length of the initialization line is less than or equal to half the width of the display area, the initialization line is connected to the nearest initialization signal line; and / or, When the length of the initialization line is greater than half the width of the display area along the first direction, the initialization line is connected to two initialization signal lines; Preferably, the two initialization signal lines connected to the same initialization line are located in non-display areas on two opposite sides of the display area.

8. The display panel according to claim 1, characterized in that: The line width of the initialization line is greater than or equal to 2 μm and less than or equal to 4 μm; Preferably, the width of the first conductive portion is equal to the width of the second conductive portion.

9. The display panel according to claim 1, characterized in that: The initialization lines include a first initialization line and a second initialization line; The pixel unit comprises: a light emitting element, a driving module, a first initialization module and a second initialization module; The driving module is connected between the first power supply terminal and the light emitting element, the first terminal of the first initialization module is connected to the first initialization line, and the second terminal of the first initialization module is connected to the control terminal of the driving module; The second initialization module is connected between the second initialization line and the first electrode of the light emitting element, and the second electrode of the light emitting element is connected to the second power supply terminal; At least one of the first initialization line and the second initialization line includes the step structure; Preferably, the first initialization line and the second initialization line are parallel to each other; Preferably, the first initialization line and the second initialization line have the same line width; Optionally, the initialization line further includes a third initialization line; The pixel unit further includes a third initialization module; the third initialization module is connected between the first end of the driving module and the third initialization line; The third initialization line includes at least one of the step structures; Preferably, the third initialization line is parallel to the first initialization line and the second initialization line; Preferably, the first initialization line, the second initialization line and the third initialization line have the same line width.

10. A display device, characterized in that: The display device comprises the display panel as claimed in any one of claims 1 to 9.

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