Display panel and display device

Abstract

The invention provides a display panel and a display device. At least partial structures of two adjacent pixel circuits in a first direction in the display panel are symmetrical about a virtual line; the pixel circuit comprises a first pixel circuit and a second pixel circuit which are adjacent in a first direction, the light-emitting device comprises a first light-emitting device and a second light-emitting device which are adjacent, the first light-emitting device is electrically connected with the first pixel circuit, and the second light-emitting device is electrically connected with the second pixel circuit; the first pixel circuit is electrically connected with the first data line, the second pixel circuit is electrically connected with the second data line, and the second data line, the second pixel circuit, the first pixel circuit and the first data line are arranged in sequence; the distance between the center of the second light-emitting device and the first data line is smaller than that between the center of the second light-emitting device and the second data line, and the first light-emitting device is located on the side, close to the second data line, of the second light-emitting device. Coupling caused by sequential charging of two adjacent data lines can be avoided, and the display quality can be improved.

Description

Technical Field

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

[0002] In the display industry, a demultiplexer is often installed to reduce the number of signal terminals in a panel. The demultiplexer's output terminals are connected to signal terminals, while the demultiplexer's output terminals are connected to two or more data lines in the display panel. In a display panel equipped with a demultiplexer, two adjacent data lines are charged sequentially. The first-charged data line is left floating, and the later-charged data line couples with the earlier-charged data line during charging, affecting the data voltage on the data lines and, consequently, the display quality. Summary of the Invention

[0003] Embodiments of the present invention provide a display panel and a display device to solve the technical problem of improving coupling between adjacent data lines and enhancing display quality.

[0004] In a first aspect, an embodiment of the present invention provides a display panel, which includes a plurality of pixel circuits, a plurality of light-emitting devices, and a plurality of data lines. At least parts of the structures of two pixel circuits adjacent to each other in the first direction are symmetrical about a virtual line extending in the second direction, and the first direction and the second direction intersect; the pixel circuit includes a first pixel circuit and a second pixel circuit adjacent to each other in the first direction, the light-emitting device includes a first light-emitting device and a second light-emitting device adjacent to each other, the first light-emitting device is electrically connected to the first pixel circuit, and the second light-emitting device is electrically connected to the second pixel circuit; The data lines extend along the second direction, the data lines include a first data line and a second data line, the first pixel circuit is electrically connected to the first data line, the second pixel circuit is electrically connected to the second data line, and the second data line, the second pixel circuit, the first pixel circuit, and the first data line are arranged in sequence; The distance between the center of the second light emitting device and the first data line is smaller than the distance between the center of the second light emitting device and the second data line, and the first light emitting device is located on a side of the second light emitting device close to the second data line.

[0005] In a second aspect, based on the same inventive concept, an embodiment of the present invention provides a display device, comprising the display panel provided by any embodiment of the present invention.

[0006] The display panel and display device provided by embodiments of the present invention have the following advantageous effects: By adjusting the connection method between adjacent first and second light-emitting devices and corresponding two adjacent pixel circuits, the embodiments of the present invention can interchange the types of light-emitting devices driven by two data lines on either side of two adjacent pixel circuits without changing the arrangement of the light-emitting devices or the connection method between the data lines and the pixel circuits. Furthermore, in combination with the design of the embodiments of the present invention in which at least portions of the structures of two adjacent pixel circuits in a first direction x are symmetrical, it is possible to achieve that two adjacent data lines disposed between some adjacent pixel circuit columns drive the same type of light-emitting device. This allows the two adjacent data lines to be charged simultaneously, avoiding coupling caused by sequential charging of the two adjacent data lines, thereby improving display quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative labor.

[0008] Figure 1 This is a schematic diagram of a display panel in the related art; Figure 2 Provide a timing diagram of signals for control signal lines in related technologies; Figure 3 A schematic diagram of a display panel provided by an embodiment of the present invention; Figure 4 A schematic diagram of another display panel provided by an embodiment of the present invention; Figure 5 A schematic diagram of a pixel circuit provided by an embodiment of the present invention; Figure 6 A schematic diagram of another display panel provided by an embodiment of the present invention; Figure 7 for Figure 6 Schematic diagram of the film layer disassembly of the layout at the position; Figure 8 A schematic diagram of another display panel provided by an embodiment of the present invention; Figure 9 for Figure 8 A magnified view of a local position; Figure 10 A partial schematic diagram of another display panel provided by an embodiment of the present invention; Figure 11 A schematic diagram of another display panel provided by an embodiment of the present invention; Figure 12A schematic diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0009] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0010] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "an", "the" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

[0011] Figure 1 This is a schematic diagram of a display panel in the related art. Figure 2 Provides a timing diagram of the signal for the control signal line in the related art. Figure 1 As shown, the display panel includes a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B. A first data line 021 connects the red sub-pixel R and the blue sub-pixel B, and a second data line 022 connects the green sub-pixel G. The demultiplexer 01 includes a first switch 011 and a second switch 012. The control end of the first switch 011 is connected to the first control signal line Mux1, the first end is connected to the data terminal 03, and the second end is connected to the first data line 021. The control end of the second switch 012 is connected to the second control signal line Mux2, the first end is connected to the data terminal 03, and the second end is connected to the second data line 022.

[0012] During a single frame of display, multiple rows of pixel circuits in the display panel are driven row by row. During the row-drive period T0 for driving a row of pixel circuits, the first control signal line Mux1 and the second control signal line Mux2 provide an enable signal in a time-sharing manner. When the first control signal line Mux1 provides the enable signal, the first switch 011 opens to charge the first data line 021. After charging, the first data line 021 enters a floating state. The second control signal line Mux2 then provides an enable signal to control the opening of the second switch 012 to charge the second data line 022. Because the second data line 022 is adjacent to the first data line 021, coupling occurs between the second data line 022 and the first data line 021 during charging, affecting the data voltage on the data line and, in turn, the display quality.

[0013] In order to solve the problems existing in the related art, an embodiment of the present invention provides a display panel that does not change the setting position of the data line, the arrangement method of the light-emitting device, or the connection method between the data line and the pixel circuit. Instead, by changing the connection method between two adjacent light-emitting devices and the corresponding two pixel circuits, two adjacent data lines are connected to the same light-emitting device. In this way, the two adjacent data lines can be charged at the same time, avoiding coupling between the data lines and improving the display quality.

[0014] Figure 3 Schematic diagram of a display panel provided by an embodiment of the present invention. Figure 3 As shown, the display panel includes a plurality of pixel circuits 10 , a plurality of light emitting devices 20 and a plurality of data lines 30 .

[0015] At least partial structures of two pixel circuits 10 adjacent to each other in the first direction x are symmetrical about a virtual line Y extending in the second direction y, and the first direction x and the second direction y intersect. Figure 3 The pixel circuit 10 is only schematically simplified. Optional structures of the pixel circuit 10 will be described in the following embodiments involving the layout. The pixel circuit 10 includes multiple transistor structures. In the embodiment of the present invention, transistors with the same function in two adjacent pixel circuits 10 may be symmetrical about a virtual line Y. Transistors with the same function may have the same or different channel shapes. Figure 3 The output terminal W of the pixel circuit 10 is shown, which is the port for connecting the pixel circuit 10 to the light emitting device 20. It can be seen that the two output terminals W of two adjacent pixel circuits 10 in the first direction x are symmetrical about the virtual line Y.

[0016] The pixel circuit 10 includes a first pixel circuit 11 and a second pixel circuit 12 adjacent to each other in a first direction x. The light-emitting device 20 includes a first light-emitting device 21 and a second light-emitting device 22 adjacent to each other. The first light-emitting device 21 is electrically connected to the first pixel circuit 11, and the second light-emitting device 22 is electrically connected to the second pixel circuit 12. At least partial structures of the first pixel circuit 11 and the second pixel circuit 12 are symmetrical about a virtual line Y extending in a second direction y.

[0017] The data lines 30 extend along the second direction y and include a first data line 31 and a second data line 32. The first pixel circuit 11 is electrically connected to the first data line 31, and the second pixel circuit 12 is electrically connected to the second data line 32. It will be understood that the pixel circuit 10 includes a data write transistor, which is electrically connected to the data line 30.

[0018] At a local location on the display panel, the second data line 32, the second pixel circuit 12, the first pixel circuit 11, and the first data line 31 are arranged in sequence. That is, the first pixel circuit 11 and the second pixel circuit 12 are located between the first data line 31 and the second data line 32, and the second pixel circuit 12 is located on the side of the first pixel circuit 11 that is closer to the second data line 32. Specifically, at the locations where the first light-emitting device 21 and the second light-emitting device 22 are adjacent, the distance between the center O1 of the second light-emitting device 22 and the first data line 31 is smaller than the distance between the center O1 of the second light-emitting device 22 and the second data line 32, and the first light-emitting device 21 is located on the side of the second light-emitting device 22 that is closer to the second data line 32.

[0019] The light-emitting device 20 includes a stacked first electrode, a light-emitting layer, and a second electrode. The light-emitting layer includes an organic or inorganic material. The first electrode of the light-emitting device 20 is electrically connected to the pixel circuit 10. The geometric center of the pattern of the light-emitting layer can be defined as the center of the light-emitting device 20. The display panel includes a pixel definition layer, and the light-emitting device 20 is located within an opening in the pixel definition layer. The geometric center of the pattern of the pixel definition layer opening can also be defined as the center of the light-emitting device 20. When the pattern of the light-emitting layer or the opening of the pixel definition layer is irregular, the center of gravity of the irregular pattern can be defined as the center of the light-emitting device.

[0020] In the display panel provided by the embodiment of the present invention, two pixel circuits 10 adjacent to each other in the first direction x are symmetrical, and the positions of the two data writing transistors of the two adjacent pixel circuits 10 are symmetrical, and the corresponding two data lines 30 connected to the two data writing transistors are also symmetrical. Figure 3 As shown in FIG, a plurality of pixel circuits 10 are arranged in the second direction y to form pixel circuit columns, two data lines 30 are provided between some adjacent pixel circuit columns, and no data line is provided between some adjacent pixel circuit columns.

[0021] At least portions of the adjacent first pixel circuits 11 and second pixel circuits 12 are symmetrically arranged. The first pixel circuit 11 is adjacent to the first data line 31 electrically connected thereto, and the second pixel circuit 12 is adjacent to the second data line 32 electrically connected thereto. The first pixel circuit 11 and the second pixel circuit 12 are located between the first data line 31 and the second data line 32. In the adjacent first light-emitting devices 21 and the second light-emitting devices 22, the first light-emitting device 21 is electrically connected to the first pixel circuit 11, and the second light-emitting device 22 is electrically connected to the second pixel circuit 12. The center O1 of the second light-emitting device 22 is located closer to the first data line 31 than the center O1 of the second light-emitting device 22 is located closer to the second data line 32. The first light-emitting device 21 is located on the side of the second light-emitting device 22 closer to the second data line 32. That is, the distance between the center O1 of the second light-emitting device 22 and the first pixel circuit 11 is smaller than the distance between it and the second pixel circuit 12. The second light-emitting device 22 is electrically connected to the pixel circuit 10 farther from its center O1, and the corresponding first light-emitting device 21 is electrically connected to the pixel circuit 10 closer to the center O1 of the second light-emitting device 22.

[0022] By adjusting the connection method between adjacent first and second light-emitting devices 21 and 22 and corresponding two adjacent pixel circuits 10, the embodiments of the present invention can interchange the types of light-emitting devices driven by the two data lines 30 on either side of two adjacent pixel circuits 10, without changing the arrangement of the light-emitting devices 20 or the connection method between the data lines 30 and the pixel circuits 10. Combined with the design of the embodiments of the present invention in which at least a portion of the structures of two adjacent pixel circuits 10 in the first direction x are symmetrical, it is possible to achieve that two adjacent data lines 30 disposed between some adjacent pixel circuit columns drive the same type of light-emitting device 20. This allows the two adjacent data lines 30 to be charged simultaneously, avoiding coupling caused by the two adjacent data lines 30 being charged sequentially, thereby improving display quality.

[0023] In some embodiments, as Figure 3As shown, multiple first pixel circuits 11 are arranged in a second direction y to form a first pixel circuit column 11L, and multiple second pixel circuits 12 are arranged in a second pixel circuit column 12L in the second direction y. The light-emitting devices 20 include red light-emitting devices 20R, green light-emitting devices 20G, and blue light-emitting devices 20B. The first light-emitting devices 21 include red light-emitting devices 20R and blue light-emitting devices 20B, and the second light-emitting devices 22 include green light-emitting devices 20G. The red light-emitting devices 20R and blue light-emitting devices 20B are alternately electrically connected to the first pixel circuits 11 in the first pixel circuit column 11L, while the multiple green light-emitting devices 20G are electrically connected to the second pixel circuits 12 in the second pixel circuit column 12L. In other words, the multiple red light-emitting devices 20R and the multiple blue light-emitting devices 20B are driven by the first data line 31, while the multiple green light-emitting devices 20G are driven by the second data line 32. Due to the difference in the data lines to which they are connected, the red light-emitting devices 20R and the blue light-emitting devices 20B are classified as the same type of light-emitting devices, while the green light-emitting devices 20G are classified as another type of light-emitting devices.

[0024] Depend on Figure 3 It can be seen that the red light-emitting device 20R in the first light-emitting device 21 and the green light-emitting device 20G in the second light-emitting device 22 are adjacent to each other, and the first pixel circuit 11 and the second pixel circuit 12 are adjacent to each other. The red light-emitting device 20R in the first light-emitting device 21 is connected to the right-hand side of the two adjacent pixel circuits 10, while the green light-emitting device 20G in the second light-emitting device 22 is connected to the left-hand side of the two adjacent pixel circuits 10. The second light-emitting device 22 is electrically connected to the pixel circuit 10 farther from the center O1 of the second light-emitting device 22, and the red light-emitting device 20R in the first light-emitting device 21 is electrically connected to the pixel circuit 10 closer to the center O1 of the second light-emitting device 22. The connection mode between the adjacent red light-emitting devices 20R and the green light-emitting devices 20G and the corresponding two adjacent pixel circuits 10 is adjusted. Similarly, the connection mode between the adjacent blue light-emitting devices 20B and the green light-emitting devices 20G and the corresponding two adjacent pixel circuits 10 is adjusted. This allows the types of light-emitting devices driven by the two data lines 30 on both sides of two adjacent pixel circuit columns to be interchanged without changing the arrangement of the light-emitting devices 20 and the connection mode between the data lines 30 and the pixel circuits 10.

[0025] like Figure 3As shown, the pixel circuit 10 includes a third pixel circuit 13 and a fourth pixel circuit 14 adjacent to each other in a first direction x; the light-emitting device 20 includes a third light-emitting device 23 and a fourth light-emitting device 24 adjacent to each other; the third light-emitting device 23 is electrically connected to the third pixel circuit 13, and the fourth light-emitting device 24 is electrically connected to the fourth pixel circuit 14. The third pixel circuit 13 is electrically connected to the first data line 31, and the fourth pixel circuit 14 is electrically connected to the second data line 32. The first data line 31, the third pixel circuit 13, the fourth pixel circuit 14, and the second data line 32 are arranged in sequence. At the locations of the third and fourth light-emitting devices 23 and 24, the distance between the center O2 of the fourth light-emitting device 24 and the second data line 32 is shorter than the distance between the center O2 of the fourth light-emitting device 24 and the first data line 31. The third light-emitting device 23 is located on the side of the fourth light-emitting device 24 that is closer to the first data line 31. That is, the distance between the center O2 of the fourth light-emitting device 24 and the fourth pixel circuit 14 is smaller than the distance between the fourth light-emitting device 24 and the third pixel circuit 13. The fourth light-emitting device 24 is electrically connected to the pixel circuit 10 closer to the center O2, and the corresponding third light-emitting device 23 is electrically connected to the pixel circuit 10 farther from the center O2 of the fourth light-emitting device 24. The fourth light-emitting device 24 and the third light-emitting device 23 are respectively connected to the corresponding pixel circuit 10 nearest to them. In other words, the connection method between the fourth light-emitting device 24 and the third light-emitting device 23 and the corresponding two adjacent pixel circuits 10 is not adjusted.

[0026] A plurality of first pixel circuits 11 are arranged in the second direction y into a first pixel circuit column 11L, a plurality of second pixel circuits 12 are arranged in the second direction y into a second pixel circuit column 12L, a plurality of third pixel circuits 13 are arranged in the second direction y into a third pixel circuit column 13L, and a plurality of fourth pixel circuits 14 are arranged in the second direction y into a fourth pixel circuit column 14L. Two first data lines 31 are arranged between adjacent first pixel circuit columns 11L and third pixel circuit columns 13L, and two second data lines 32 are arranged between adjacent second pixel circuit columns 12L and fourth pixel circuit columns 14L. This arrangement allows two adjacent data lines 30 to be charged simultaneously, avoiding coupling caused by charging the two adjacent data lines 30 one after the other, thereby improving display quality.

[0027] The third light-emitting devices 23 include red light-emitting devices 20R and blue light-emitting devices 20B, and the fourth light-emitting devices include green light-emitting devices 20G. The red light-emitting devices 20R and blue light-emitting devices 20B are alternately electrically connected to the third pixel circuits 13 in the third pixel circuit column 13L, while the plurality of green light-emitting devices 20G are electrically connected to the fourth pixel circuits 14 in the fourth pixel circuit column 14L. The third pixel circuit column 13L is electrically connected to the first data line 31, and the fourth pixel circuit column 14L is electrically connected to the second data line 32. In other words, the plurality of red light-emitting devices 20R and the plurality of blue light-emitting devices 20B are driven by the first data line 31, while the plurality of green light-emitting devices 20G are driven by the second data line 32.

[0028] like Figure 3 As shown, red light-emitting devices 20R and blue light-emitting devices 20B are arranged in a first pixel column along the second direction y, and a plurality of green light-emitting devices 20G are arranged in a second pixel column along the second direction y. This embodiment of the present invention adjusts the corresponding connection between two adjacent pixel columns and corresponding two pixel circuit columns, wherein a connection position swap is performed every other first pixel column and second pixel column. This connection position swap means that, for two adjacent pixel circuit columns, the first pixel column on the left is electrically connected to the pixel circuit column on the right, and the second pixel column on the right is electrically connected to the pixel circuit column on the left. This arrangement enables two data lines 30 located between two adjacent pixel circuit columns to drive the same type of light-emitting devices 20. Specifically, two first data lines 31 are arranged between some adjacent pixel circuit columns, and two second data lines 32 are arranged between some adjacent pixel circuit columns. This arrangement allows two adjacent data lines 30 to be charged simultaneously, avoiding coupling caused by charging the two adjacent data lines 30 one after the other, thereby improving display quality.

[0029] In other embodiments, Figure 4 A schematic diagram of another display panel provided by an embodiment of the present invention, such as Figure 4 As shown, the display panel includes a demultiplexer 40 and a data terminal 50. The input end of the demultiplexer 40 is connected to the data terminal 50, and the output end of the demultiplexer 40 is connected to at least two data lines 30. The demultiplexer 40 includes a first switch 41 and a second switch 42. The first end of the first switch 41 and the first end of the second switch 42 are connected to the data terminal 50, the second end of the first switch 41 is connected to the first data line 31, and the second end of the second switch 42 is connected to the second data line 32. The control end of the first switch 41 is connected to the first control signal line Mux1, and the control end of the second switch 42 is connected to the second control signal line Mux2.

[0030] In a display panel, multiple pixel circuits 10 are arranged in a first direction x to form pixel circuit rows. Adjacent first pixel circuits 11 and second pixel circuits 12 are located in the same pixel circuit row. When the display panel is driven for display, the multiple pixel circuit rows are driven row by row. During the period of driving a pixel circuit row, the first control signal line Mux1 and the second control signal line Mux2 provide an enable signal in a time-sharing manner. The first control signal line Mux1 provides an enable signal to control the first switch 41 to open and charge the first data line 31. The second control signal line Mux2 provides an enable signal to control the second switch 42 to open and charge the second data line 32. The first data line 31 drives the red light-emitting device 20R and the blue light-emitting device 20B, while the second data line 32 drives the green light-emitting device 20G. With the design of the embodiment of the present invention, the first data line 31 is adjacent to the first data line 31, and the second data line 32 is adjacent to the second data line 32. The two data lines 30 located between two adjacent pixel circuit columns are charged simultaneously, avoiding coupling caused by the two adjacent data lines 30 being charged sequentially, thereby improving display quality.

[0031] In some embodiments, Figure 5 Schematic diagram of a pixel circuit provided by an embodiment of the present invention. Figure 5 As shown, the pixel circuit 10 includes a driving transistor Tm, a data writing transistor T1, a gate reset transistor T3, a threshold compensation transistor T4, an electrode reset transistor T2, a first emission control transistor T5, a second emission control transistor T6, and a storage capacitor Cst. The data writing transistor T1 is used to write the data voltage Data into the pixel circuit 10. The threshold compensation transistor T4 is used to self-check and compensate the threshold voltage of the driving transistor Tm during the data writing process. The gate reset transistor T3 is used to reset the gate of the driving transistor Tm. The electrode reset transistor T2 is used to reset the first electrode of the light-emitting device 20. The driving transistor Tm is connected in series between the first emission control transistor T5 and the second emission control transistor T6. The gates of the first emission control transistor T5 and the second emission control transistor T6 receive the emission control signal Emit. The first emission control transistor T5 receives a first power supply signal Pvdd, and the second electrode of the light-emitting device 20 receives a second power supply signal Pvee. Optionally, the first power supply signal Pvdd is a positive power supply signal, and the second power supply signal Pvee is a negative power supply signal.

[0032] Figure 5In the figure, each transistor is a p-type transistor. The gate of the data write transistor T1 and the gate of the threshold compensation transistor T4 receive a scan signal S1, and the gate of the gate reset transistor T3 and the gate of the electrode reset transistor T2 receive a scan signal S2. In other embodiments, the gate reset transistor T3 and the threshold compensation transistor T4 are n-type transistors, and the remaining transistors are p-type transistors. In this case, the gate of the data write transistor T1 and the gate of the threshold compensation transistor T4 receive different scan signals, and the gate of the gate reset transistor T3 and the gate of the electrode reset transistor T2 also receive different scan signals.

[0033] Figure 5 In the figure, the gate reset transistor T3 receives the reset signal Vref1, and the electrode reset transistor T2 receives the reset signal Vref2. The voltage values ​​of the reset signals Vref1 and Vref2 are different. In other embodiments, the gate reset transistor T3 and the electrode reset transistor T2 receive the same reset signal, which is not shown in the figure here.

[0034] Figure 6 A schematic diagram of another display panel provided by an embodiment of the present invention, Figure 6 The diagram shows the layout of two adjacent pixel circuits. Figure 6 The pixel circuit can be combined Figure 5 To understand. Figure 7 for Figure 6 Schematic diagram of the film layer disassembly of the layout at the position. Figure 8 A schematic diagram of another display panel provided by an embodiment of the present invention, Figure 8 exist Figure 6 The first electrodes of two light-emitting devices correspondingly connected to the two pixel circuits 10 are schematically shown.

[0035] Combine Figure 6 and Figure 7 From a perspective, the display panel includes a substrate and a semiconductor layer 001, a first metal layer M1, a second metal layer M2, a third metal layer M3 and a fourth metal layer M4 located on one side of the substrate.

[0036] Depend on Figure 6 It can be seen that two pixel circuits 10 adjacent to each other in the first direction x are symmetrical about a virtual line Y extending in the second direction y. Figure 7 From the perspective of FIG. 1 , the channel of the transistor is located in the semiconductor layer 001, and the channel ch of the driving transistor Tm in the pixel circuit 10 is in the shape of a figure square. Figure 6 In the figure, the channel shapes of the driving transistors Tm of the two pixel circuits 10 are the same. In some embodiments of the present invention, the channel shapes of the driving transistors Tm of two adjacent pixel circuits 10 are different, and the two driving transistors Tm can also be considered symmetrical about the virtual line Y extending in the second direction y.

[0037] Figure 6 Only some transistors in the pixel circuit 10 are marked. Figure 7 The channel position of each transistor in the pixel circuit 10 is shown. Figure 7 right Figure 6 The display panel is also provided with scanning signal lines S1 and S2, light emitting control signal lines Emit, reset signal lines Vref1 and Vref2, and power supply lines Pvdd. Each signal line and the signal it provides are labeled the same.

[0038] like Figure 6 As shown, the display panel includes a connecting electrode 60, which is connected between the light emitting device 20 and the output terminal of the pixel circuit 10 connected thereto. The output terminal of the pixel circuit 10 is the output terminal of the second light emitting control transistor T6. Figure 6 The diagram shows the output terminal W1 of the first pixel circuit 11 and the output terminal W2 of the second pixel circuit 12. The connecting electrode 60 includes a first connecting electrode 61 and a second connecting electrode 62. The first connecting electrode 61 is connected between the first light-emitting device 21 and the first pixel circuit 11, and the second connecting electrode 62 is connected between the second light-emitting device 22 and the second pixel circuit 12. Figure 6 The first light emitting device 21 and the second light emitting device 22 are not shown. Figure 8 It can be seen that the positions of the first light emitting device 21 and the second light emitting device 22 are located. Figure 8 The diagram shows the first electrode 201 of the first light emitting device 21 and the first electrode 201 of the second light emitting device 22. A connecting electrode 60 is connected between the first electrode 201 of the light emitting device and the pixel circuit 10 connected thereto. The connecting electrode 60 is electrically connected to the first electrode 201 through a via V penetrating the insulating layer.

[0039] Depend on Figure 6It can be seen that the distance between the second connection electrode 62 and the output terminal W1 of the first pixel circuit 11 is smaller than the distance between the second connection electrode 62 and the output terminal W2 of the second pixel circuit 12, and / or the distance between the first connection electrode 61 and the output terminal W2 of the second pixel circuit 12 is smaller than the distance between the first connection electrode 61 and the output terminal W1 of the first pixel circuit 11. In the embodiment of the present invention, two adjacent first light-emitting devices 21 and second light-emitting devices 22 are respectively connected to two adjacent pixel circuits 10, wherein the second connection electrode 62 connected to the second light-emitting device 22 is connected to the one of the two adjacent pixel circuits 10 that is farther away from the second connection electrode 62, and / or the first connection electrode 61 connected to the first light-emitting device 21 is connected to the one of the two adjacent pixel circuits 10 that is farther away from the first connection electrode 61. Such an arrangement enables the types of light-emitting devices driven by the two data lines 30 on both sides of two adjacent pixel circuits 10 to be interchanged. Combined with the design in the embodiment of the present invention that at least part of the structures of the two adjacent pixel circuits 10 in the first direction x are symmetrical, it is possible to achieve that two adjacent data lines 30 arranged between some adjacent pixel circuit columns drive the same type of light-emitting devices 20, so that the two adjacent data lines 30 can be charged at the same time, avoiding coupling caused by the two adjacent data lines 30 being charged one after another, and thus improving the display quality.

[0040] In some embodiments, as Figure 8 As shown, the display panel includes a connecting electrode 60, which is connected between the first electrode 201 of the light-emitting device 20 and the output terminal of the pixel circuit 10 connected thereto. Specifically, a first connecting electrode 61 is connected between the first electrode 201 of the first light-emitting device 21 and the output terminal W1 of the first pixel circuit 11, and a second connecting electrode 62 is connected between the first electrode 201 of the second light-emitting device 22 and the output terminal W2 of the second pixel circuit 12. The display panel includes a connecting line 70, at least part of which extends along a first direction x, and at least part of which is located on a different layer from the connecting electrode 60. The connecting line 70 is connected between the first light-emitting device 21 and the first pixel circuit 11, and between the second light-emitting device 22 and the second pixel circuit 12.

[0041] Figure 9 for Figure 8 Enlarged view of the local location. Figure 9 The diagram shows the corresponding connection positions between the output terminals of the two pixel circuits 10 and the two connection electrodes 60 , and the directions of the two connection lines 70 can be seen relatively clearly. Figure 9 The direction of the two connecting lines 70 is indicated by a dotted line.

[0042] In a conventional display panel structure, the output end of a pixel circuit is electrically connected to a connecting electrode via a via extending through an insulating layer. The connecting electrode is then connected to the first electrode of a light-emitting device via a via extending through the insulating layer, thereby electrically connecting the pixel circuit and the light-emitting device. In the embodiment of the present invention, however, a connecting line 70 is provided on a different layer from the connecting electrode 60. The first light-emitting device 21 and the second light-emitting device 22 are each electrically connected to the corresponding pixel circuit 10 via the connecting line 70. This satisfies the connection requirements between the two light-emitting devices 20 and the two pixel circuits 10, and enables the type of light-emitting device driven by the two data lines 30 on either side of two adjacent pixel circuits 10 to be interchanged.

[0043] like Figure 9 As shown, the connecting line 70 includes a first line segment 70a extending along the first direction x, and the first line segment 70a and the connecting electrode 60 are located in different layers. The first line segment 70a electrically connected to the first light emitting device 21 and the first line segment 70a electrically connected to the second light emitting device 22 are adjacent to each other in the second direction y. Figure 8 In the embodiment of the present invention, the first connection electrode 61 and the second connection electrode 62 corresponding to the first light emitting device 21 and the second light emitting device 22 are adjacent to each other in the first direction x, and the first pixel circuit 11 and the second pixel circuit 12 are adjacent to each other in the first direction x. Figure 9 It can be seen that the first connection electrode 61 is on the left and the second connection electrode 62 is on the right, while the second pixel circuit 12 is on the left and the first pixel circuit 11 is on the right. In this embodiment of the present invention, the connection line 70 includes a first line segment 70a extending in the first direction x, and the two first line segments 70a of the two connection lines 70 are arranged adjacent to each other. This ensures that the first connection electrode 61 is connected to the first pixel circuit 11 on the right and the second connection electrode 62 is connected to the second pixel circuit 12 on the left, and ensures that the newly added circuit wiring in the panel is tightly arranged to avoid affecting the resolution of the panel.

[0044] Combine Figure 7 As shown in the film layer disassembly diagram, the storage capacitor Cst of the pixel circuit 10 includes a first electrode C1 and a second electrode C2. The first electrode C1 is reused as the gate of the drive transistor Tm. The connecting line 70 includes a first segment 70a extending along the first direction x. The first segment 70a and the second electrode C2 are located on the same layer. By arranging the first segment 70a and the second electrode C2 in the connecting line 70 on the same layer, both can be manufactured in the same process. Using the existing display panel process to manufacture the first segment 70a facilitates process simplification.

[0045] Combine 7 and Figure 9From a sectional view, the connecting line 70 further includes a second line segment 70b and a third line segment 70c. One end of the first line segment 70a is connected to the second line segment 70b, and the other end is connected to the third line segment 70c. The second line segment 70b is electrically connected to the output terminals of the pixel circuit 10 (such as the output terminal W1 of the first pixel circuit 11 and the output terminal W2 of the second pixel circuit 12), and the third line segment 70c is electrically connected to the connecting electrode 60. The second line segment 70b and the third line segment 70c are located on the same layer, while the second line segment 70b and the first line segment 70a are located on different layers. In the embodiment of the present invention, the connecting line 70 includes a first line segment 70a, a second line segment 70b and a third line segment 70c. The first line segment 70a extends along the first direction x, and the first line segment 70a, the second line segment 70b and the third line segment 70c are located on different layers, which can avoid the original wiring in the pixel circuit, ensuring that the connecting line 70 is used to realize the electrical connection between the first pixel circuit 11 and the first light-emitting device 21, and the electrical connection between the second pixel circuit 12 and the second light-emitting device 22.

[0046] Combine Figure 7 From a holographic perspective, the display panel includes a substrate (not shown) and, located on one side of the substrate, a semiconductor layer 001, a first metal layer M1, a second metal layer M2, a third metal layer M3, and a fourth metal layer M4. The second metal layer M2 is located on the side of the first metal layer M1 away from the substrate, the third metal layer M3 is located on the side of the second metal layer M2 away from the substrate, and the fourth metal layer M4 is located on the side of the third metal layer M3 away from the substrate. In other words, the semiconductor layer 001, the first metal layer M1, the second metal layer M2, the third metal layer M3, and the fourth metal layer M4 are sequentially arranged away from the substrate. The first plate C1 of the storage capacitor Cst is located on the first metal layer M1, the second plate C3 of the storage capacitor Cst and the first line segment 70a are located on the second metal layer M2, and the second line segment 70b and the third line segment 70c are located on the third metal layer M3. The first line segment 70a, the second line segment 70b, and the third line segment 70c are manufactured using the existing display panel process, eliminating the need for new process steps and reducing costs.

[0047] In addition, by Figure 7 It can be seen that the active layer of each transistor in the pixel circuit 10 is located in the semiconductor layer 001, the scan signal line S1, the scan signal line S2 and the light-emitting control signal line Emit are located in the first metal layer M1, the reset signal line Vref1 and the reset signal line Vref2 are located in the second metal layer M2, and the power line Pvdd and the data line 30 (including the first data line 31 and the second data line 32) are located in the fourth metal layer M4.

[0048] Combine Figure 6 and Figure 7From the perspective of FIG, the display panel includes a reset signal line Vref extending along a first direction x and an auxiliary signal line 80 extending along a second direction y. The pixel circuit 10 is electrically connected to the reset signal line Vref. The auxiliary signal line 80 is electrically connected to the reset signal line Vref. Figure 6 The schematic reset signal line Vref includes a reset signal line Vref1 and a reset signal line Vref2, and the auxiliary signal line 80 includes an auxiliary signal line 81 and an auxiliary signal line 82. The reset signal line Vref1 and the auxiliary signal line 81 are electrically connected through a first via V1, and the reset signal line Vref2 and the auxiliary signal line 82 are electrically connected through a second via V2. Setting the auxiliary signal line 80 and the reset signal line Vref to extend in directions that intersect with each other and are electrically connected can form a grid-like wiring in the display panel, which can reduce the voltage drop of the reset signal during transmission, improve the uniformity of the reset signal within the surface, and thus improve the display uniformity. Combined with Figure 7 From the perspective of FIG. 8 , the reset signal line Vref includes a fourth line segment 83 and a fifth line segment 84 located in different layers. The fourth line segment 83 is located in the third metal layer M3 , and the fifth line segment 84 is located in the fourth metal layer M4 .

[0049] Figure 6 is a top view of the display panel, and the top view direction is the same as the direction perpendicular to the plane where the display panel is located. Figure 6 It can be seen that, in a direction perpendicular to the plane of the display panel, the connecting line 70 and the auxiliary signal line 80 are insulated and cross each other. That is, the auxiliary signal line 80 extending along the second direction y is arranged between the first pixel circuit 11 and the second pixel circuit 12. When the connecting line 70 is arranged to achieve electrical connection between the first pixel circuit 11 and the first light-emitting device 21, and between the second pixel circuit 12 and the second light-emitting device 22, the connecting line 70 and the auxiliary signal line 80 are insulated and cross each other.

[0050] In other embodiments, Figure 10 A partial schematic diagram of another display panel provided by an embodiment of the present invention, such as Figure 10 As shown, the display panel includes a display area AA and a non-display area NA; the non-display area NA includes a data terminal 50; the display area AA includes a data line 30, a data connection line 90, a first signal line 91 and a second signal line 92; a plurality of pixel circuits ( Figure 10 The pixel circuits (not shown) are arranged in a second direction y to form pixel circuit columns, with data lines 30 electrically connected to the pixel circuit columns. The data lines 30 include first-type data lines 30-1 and second-type data lines 30-2. Data connection lines 90 are connected between the first-type data lines 30-1 and the data terminals 50. The second-type data lines 30-2 extend from the display area AA to the non-display area NA and are electrically connected to the data terminals 50. This arrangement is equivalent to relocating the fan-out lines originally arranged in the non-display area NA to the display area AA, reducing the area occupied by the fan-out lines and facilitating a narrower display panel frame.

[0051] Optionally, the non-display area NA includes a demultiplexer 40, and the data connection lines 90 are connected to the corresponding data terminals 50 through the demultiplexer 40, and the second type data lines 30-2 are connected to the corresponding data terminals 50 through the demultiplexer 40. For the connection method between the demultiplexer 40 and the data lines 30, please refer to Figure 4 The embodiments are provided for understanding and will not be described in detail here.

[0052] like Figure 10 As shown, the data connection line 90 includes a first connection line segment 90a extending along the first direction x and a second connection line segment 90b extending along the second direction y; the first signal line 91 extends along the first direction x, and the second signal line 92 extends along the second direction y, and the first signal line 91 and the second signal line 92 are cross-connected and electrically connected; the first signal line 91 and the first connection line segment 90a are located on the same layer, and the second signal line 92 and the second connection line segment 90b are located on the same layer. Figure 7 From the perspective of the embodiment, the first signal line 91 and the first connecting line segment 90a can be arranged in the third metal layer M3, and the second signal line 92 and the second connecting line segment 90b can be arranged in the fourth metal layer M4. The arrangement of the first signal line 91 and the second signal line 92 can improve the wiring uniformity within the display area AA, making the display panel reflect ambient light more uniformly.

[0053] Optionally, the first signal line 91 and the second signal line 92 are cross-electrically connected to transmit a constant voltage signal, such as a second power signal Pvee required by a display panel.

[0054] In the embodiment of the present invention, two adjacent pixel circuits in the first direction x are symmetrically designed, and two data lines 30 are provided between some adjacent pixel circuit columns, such as Figure 10 3 , two first data lines 31 are arranged adjacent to each other, two second data lines 32 are arranged adjacent to each other, and two second signal lines 92 are arranged between some adjacent pixel circuit columns.

[0055] by Figure 6 Taking the example of two pixel circuits 10 with first signal lines 91 and second signal lines 92 arranged at their layout positions, the first signal lines 91 and second signal lines 92 are electrically connected through the third via hole V3. Figure 6 It can be seen that two second signal lines 92 are provided between two adjacent pixel circuits in the first direction x. Figure 6 From the perspective of FIG. 1 , the connection line 70 includes a first connection line 70 - 1 . Along a direction perpendicular to the plane where the display panel is located, the first connection line 70 - 1 and the second signal line 92 are insulated and cross each other.

[0056] In addition, a portion of the display panel is provided with Figure 10The second connecting line segment 90b is shown, and the second connecting line segment 90b is located between two adjacent pixel circuits in the first direction x. The connecting line 70 also includes a second connecting line, which is insulated and crosses the second connecting line segment 90b, and is not shown in the figure here.

[0057] In other embodiments, Figure 11 Schematic diagram of another display panel provided by an embodiment of the present invention. Figure 11 As shown, the display panel includes a first pixel circuit column 11L, a second pixel circuit column 12L, a third pixel circuit column 13L, and a fourth pixel circuit column 14L. The display panel includes a power line Pvdd extending along the second direction y, and the pixel circuit 10 is coupled to the power line Pvdd; the power line Pvdd is set in a one-to-one correspondence with the pixel circuit column, and the power line Pvdd provides the first power signal Pvdd required by the pixel circuit 10. Figure 6 In the embodiment of the present invention, the power lines Pvdd are arranged in a one-to-one correspondence with the pixel circuit columns, which can increase the number of power lines Pvdd arranged in the display panel, thereby improving the uniformity of the panel transmitting the first power signal Pvdd, and further improving the display uniformity.

[0058] Based on the same inventive concept, an embodiment of the present invention further provides a display device, Figure 12 Schematic diagram of a display device provided by an embodiment of the present invention. Figure 12 As shown, the display device includes a display panel 100 provided by any embodiment of the present invention. The structure of the display panel 100 has been described in the above embodiments and will not be repeated here. The display device provided by the embodiment of the present invention can be, for example, a mobile phone, tablet, computer, television, smart wearable product, or other electronic device with a display function.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display panel, characterized in that: The display panel includes a plurality of pixel circuits, a plurality of light-emitting devices and a plurality of data lines; At least partial structures of two pixel circuits adjacent in a first direction are symmetrical about a virtual line extending in a second direction, and the first direction and the second direction intersect; the pixel circuits include a first pixel circuit and a second pixel circuit adjacent in the first direction, and the light-emitting devices include a first light-emitting device and a second light-emitting device adjacent to each other, the first light-emitting device and the first pixel circuit are electrically connected, and the second light-emitting device and the second pixel circuit are electrically connected; The data lines extend along the second direction, the data lines include a first data line and a second data line, the first pixel circuit is electrically connected to the first data line, the second pixel circuit is electrically connected to the second data line, and the second data line, the second pixel circuit, the first pixel circuit, and the first data line are arranged in sequence; The distance between the center of the second light emitting device and the first data line is smaller than the distance between the center of the second light emitting device and the second data line, and the first light emitting device is located on a side of the second light emitting device close to the second data line.

2. The display panel according to claim 1, wherein: A plurality of the first pixel circuits are arranged in the second direction to form a first pixel circuit column, and a plurality of the second pixel circuits are arranged in the second direction to form a second pixel circuit column; The light emitting devices include a red light emitting device, a green light emitting device and a blue light emitting device; The first light-emitting device includes the red light-emitting device and the blue light-emitting device, and the second light-emitting device includes the green light-emitting device; the red light-emitting device and the blue light-emitting device are alternately electrically connected to the first pixel circuit in the first pixel circuit column, and a plurality of the green light-emitting devices are electrically connected to the second pixel circuit in the second pixel circuit column.

3. The display panel according to claim 1, wherein: The display panel comprises a demultiplexer and a data terminal, wherein the input end of the demultiplexer is connected to the data terminal, and the output end of the demultiplexer is connected to at least two of the data lines; The demultiplexer includes a first switch and a second switch, wherein the first end of the first switch and the first end of the second switch are connected to the data terminal, the second end of the first switch is connected to the first data line, and the second end of the second switch is connected to the second data line.

4. The display panel according to claim 3, wherein: The pixel circuit includes a third pixel circuit and a fourth pixel circuit adjacent to each other in the first direction; the light-emitting device includes a third light-emitting device and a fourth light-emitting device adjacent to each other; the third light-emitting device is electrically connected to the third pixel circuit, and the fourth light-emitting device is electrically connected to the fourth pixel circuit; The third pixel circuit is electrically connected to the first data line, the fourth pixel circuit is electrically connected to the second data line, and the first data line, the third pixel circuit, the fourth pixel circuit, and the second data line are arranged in sequence; The distance between the center of the fourth light emitting device and the second data line is smaller than the distance between the center of the fourth light emitting device and the first data line, and the third light emitting device is located on a side of the fourth light emitting device close to the first data line; A plurality of the first pixel circuits are arranged into a first pixel circuit column in the second direction, a plurality of the second pixel circuits are arranged into a second pixel circuit column in the second direction, a plurality of the third pixel circuits are arranged into a third pixel circuit column in the second direction, and a plurality of the fourth pixel circuits are arranged into a fourth pixel circuit column in the second direction; wherein, two first data lines are arranged between adjacent first pixel circuit columns and third pixel circuit columns, and two second data lines are arranged between adjacent second pixel circuit columns and fourth pixel circuit columns.

5. The display panel according to claim 4, wherein: The light emitting devices include a red light emitting device, a green light emitting device and a blue light emitting device; The third light-emitting device includes a red light-emitting device and a blue light-emitting device, and the fourth light-emitting device includes a green light-emitting device; the red light-emitting device and the blue light-emitting device are alternately electrically connected to the third pixel circuit in the third pixel circuit column, and a plurality of the green light-emitting devices are electrically connected to the fourth pixel circuit in the fourth pixel circuit column.

6. The display panel according to claim 1, wherein: The display panel includes a connecting electrode, wherein the connecting electrode is connected between the light emitting device and the output terminal of the pixel circuit connected thereto; The connecting electrode includes a first connecting electrode and a second connecting electrode, the first connecting electrode is connected between the first light emitting device and the first pixel circuit, and the second connecting electrode is connected between the second light emitting device and the second pixel circuit; The distance between the second connecting electrode and the output end of the first pixel circuit is smaller than the distance between the second connecting electrode and the output end of the second pixel circuit, and / or the distance between the first connecting electrode and the output end of the second pixel circuit is smaller than the distance between the first connecting electrode and the output end of the first pixel circuit.

7. The display panel according to claim 1, wherein: The display panel includes a connecting electrode, wherein the connecting electrode is connected between the light emitting device and the output terminal of the pixel circuit connected thereto; The display panel includes a connecting line, at least part of the connecting line extends along the first direction, and at least part of the connecting line and the connecting electrode are located in a different layer; The connection line is connected between the first light emitting device and the first pixel circuit, and the connection line is connected between the second light emitting device and the second pixel circuit.

8. The display panel according to claim 7, wherein: The connecting line includes a first line segment extending along the first direction, and the first line segment and the connecting electrode are located in different layers; The first line segment electrically connected to the first light emitting device and the first line segment electrically connected to the second light emitting device are adjacent to each other in the second direction.

9. The display panel according to claim 7, wherein: The pixel circuit includes a driving transistor and a storage capacitor, the storage capacitor includes a first plate and a second plate, and the first plate is multiplexed as the gate of the driving transistor; The connecting line includes a first line segment extending along the first direction, and the first line segment and the second electrode plate are located in the same layer.

10. The display panel according to claim 9, wherein: The connecting line further includes a second line segment and a third line segment, one end of the first line segment is connected to the second line segment, and the other end is connected to the third line segment; the second line segment is electrically connected to the output end of the pixel circuit, and the third line segment is electrically connected to the connecting electrode; The second line segment and the third line segment are located in the same layer, and the second line segment and the first line segment are located in different layers.

11. The display panel according to claim 10, wherein: The display panel includes a substrate and a first metal layer, a second metal layer, and a third metal layer located on one side of the substrate, the second metal layer being located on a side of the first metal layer away from the substrate, and the third metal layer being located on a side of the second metal layer away from the substrate; The first electrode plate is located in the first metal layer, the second electrode plate and the first line segment are located in the second metal layer, and the second line segment and the third line segment are located in the third metal layer.

12. The display panel according to claim 7, wherein: The display panel includes a reset signal line extending along the first direction and an auxiliary signal line extending along the second direction, the pixel circuit is electrically connected to the reset signal line, and the auxiliary signal line is electrically connected to the reset signal line; Wherein, along a direction perpendicular to the plane where the display panel is located, the connecting line and the auxiliary signal line are insulated and cross each other.

13. The display panel according to claim 7, wherein: The display panel includes a display area and a non-display area; the non-display area includes data terminals; The display area includes the data line, the data connection line, the first signal line, and the second signal line; the plurality of pixel circuits are arranged in the second direction to form a pixel circuit column, and the data line is electrically connected to the pixel circuit column; the data line includes a first type of data line, and the data connection line is connected between the first type of data line and the data terminal; The data connection line includes a first connection line segment extending along the first direction and a second connection line segment extending along the second direction; the first signal line extends along the first direction, the second signal line extends along the second direction, and the first signal line and the second signal line are cross-connected and electrically connected; the first signal line and the first connection line segment are located on the same layer, and the second signal line and the second connection line segment are located on the same layer; Wherein, the connecting line includes a first connecting line and a second connecting line; Along a direction perpendicular to the plane where the display panel is located, the first connecting line and the second signal line are insulated and cross each other, and the second connecting line and the second connecting line segment are insulated and cross each other.

14. The display panel according to claim 13, wherein: The display panel includes a power line extending along the second direction, and the pixel circuits are coupled to the power line; the power lines are arranged in a one-to-one correspondence with the pixel circuit columns.

15. A display device, characterized in that: A display device comprises the display panel according to any one of claims 1 to 14.

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