Display panel and display device

Abstract

The invention provides a display panel and a display device, relates to the technical field of display, and can optimize touch control design. The display panel includes: a substrate; the element definition layer is positioned on one side of the substrate and is provided with a plurality of openings; the light-emitting layer is at least located in the opening; the first metal layer is located on the side, away from the substrate, of the pixel defining layer and comprises a cathode, a first shielding electrode and a touch electrode which are spaced from one another, in the direction perpendicular to the plane where the substrate is located, the cathode is overlapped with the opening, the first shielding electrode receives a first signal, and the first shielding electrode is arranged between the cathode and the touch electrode.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more particularly to a display panel and a display device. Background Technology

[0002] In current mainstream touch product designs, the touch layer often employs a mutual capacitance design and needs to be fabricated separately on top of the encapsulation layer after the display panel encapsulation layer is completed. This necessitates touch processing after the encapsulation process, requiring additional touch processing modules in the factory layout and extending the overall production cycle, ultimately leading to a significant increase in the overall product cost. Summary of the Invention

[0003] This invention provides a display panel and a display device that optimizes touch design.

[0004] In a first aspect, embodiments of the present invention provide a display panel, comprising: substrate; A pixel definition layer, located on one side of the substrate, has multiple openings; The light-emitting layer is located at least within the opening; A first metal layer, located on the side of the pixel definition layer away from the substrate, includes a cathode, a first shielding electrode, and a touch electrode spaced apart from each other. In a direction perpendicular to the plane of the substrate, the cathode overlaps with the opening. The first shielding electrode receives a first signal. The first shielding electrode is located between the cathode and the touch electrode.

[0005] Secondly, based on the same inventive concept, embodiments of the present invention also provide a display device, including the aforementioned display panel.

[0006] The technical solution provided by the embodiments of the present invention has the following beneficial effects: In existing technologies, the cathode is a single, continuous film layer, with the touch structure located on the side of the encapsulation layer away from the cathode. In this invention, the single film layer containing the cathode is divided into spaced-apart cathode, first shielding electrode, and touch electrode. Thus, the touch electrode is integrated into the light-emitting device layer below the encapsulation layer. The touch electrode and cathode are formed using the same patterning process, eliminating the need for additional touch processing after the encapsulation layer is formed. This simplifies factory layout and reduces the cycle time of the display panel, effectively lowering costs and accelerating production. Furthermore, in this invention, a first shielding electrode is spaced between the cathode and the touch electrode. This first shielding electrode receives the first signal and can also shield the cathode signal from the influence of touch signal transitions, reducing interference between the touch and display. Attached Figure Description

[0007] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0008] Figure 1 This is a schematic diagram of a display panel provided in an embodiment of the present invention; Figure 2 This is another schematic diagram of a display panel provided in an embodiment of the present invention; Figure 3 This is another schematic diagram of the display panel provided in an embodiment of the present invention; Figure 4 This is another schematic diagram of a display panel provided in an embodiment of the present invention; Figure 5 This is another schematic diagram of a display panel provided in an embodiment of the present invention; Figure 6 This is another schematic diagram of a display panel provided in an embodiment of the present invention; Figure 7 This is another schematic diagram of a display panel provided in an embodiment of the present invention; Figure 8 This is another schematic diagram of a display panel provided in an embodiment of the present invention; Figure 9 This is another schematic diagram of a display panel provided in an embodiment of the present invention; Figure 10 This is another schematic diagram of a display panel provided in an embodiment of the present invention; Figure 11 This is another schematic diagram of a display panel provided in an embodiment of the present invention; Figure 12 This is a schematic diagram of a pixel circuit provided in an embodiment of the present invention; Figure 13 This is another schematic diagram of a display panel provided in an embodiment of the present invention; Figure 14 This is another schematic diagram of a display panel provided in an embodiment of the present invention; Figure 15 This is a schematic diagram of a display device provided in an embodiment of the present invention. Detailed Implementation

[0009] To better understand the technical solution of the present invention, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0010] It should be understood that the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0011] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” as used in the embodiments of this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0012] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0013] This invention provides a display panel, which can be an organic light-emitting diode (OLED) display panel.

[0014] Figure 1 This is a schematic diagram of a display panel provided in an embodiment of the present invention. Figure 2 Another schematic diagram of the display panel provided in an embodiment of the present invention is shown below. Figure 1 and Figure 2 As shown, the display panel includes a substrate 1, a pixel definition layer 2, a light-emitting layer 3, and a first metal layer 4.

[0015] The pixel definition layer 2 is located on one side of the substrate 1 and has multiple openings 5, with the light-emitting layer 3 located at least within the openings 5.

[0016] The first metal layer 4 is located on the side of the pixel definition layer 2 away from the substrate 1, and includes a cathode 6, a first shielding electrode 7, and a touch electrode 8 spaced apart from each other. The cathode 6 overlaps with the opening 5 in a direction perpendicular to the plane of the substrate 1. The first shielding electrode 7 receives a first signal, which can be a constant voltage signal. The first shielding electrode 7 is located between the cathode 6 and the touch electrode 8, meaning it is spaced between them.

[0017] The display panel also includes an encapsulation layer 9, which is located on the side of the first metal layer 4 away from the substrate 1.

[0018] In existing technologies, the cathode is a single film layer, and the touch structure is located on the side of the encapsulation layer away from the cathode. In this invention, the single film layer containing the cathode is divided into spaced-apart cathode 6, a first shielding electrode 7, and a touch electrode 8. The touch electrode 8 is then integrated into the light-emitting device layer below the encapsulation layer 9. In this case, the touch electrode 8 and the cathode 6 are formed using the same patterning process. After the encapsulation layer 9 is formed, no additional touch processing is required, simplifying factory layout and reducing the cycle time of the display panel, thereby effectively reducing costs and accelerating production. Furthermore, in this invention, a first shielding electrode 7 is spaced between the cathode 6 and the touch electrode 8. The first shielding electrode 7 receives the first signal, thus shielding the cathode signal from the influence of touch signal transitions, improving the stability of the cathode signal during touch signal transitions, and reducing interference between the touch and display.

[0019] In this invention, the touch electrode 8 is a self-capacitive touch structure. The touch electrode 8 forms a capacitor with certain fixed potentials, such as ground potential. When a finger touches the screen, an additional capacitive coupling is formed at the touch position. Then, the touch position of the finger is determined according to the capacitance at different positions.

[0020] Mutual capacitive touch utilizes the capacitance formed by the intersection of horizontal and vertical electrodes to detect the finger touch position by judging the changes in this capacitance. However, parasitic capacitance is formed between the horizontal and vertical electrodes and ground, which acts as interference capacitance and affects touch detection. Especially in large-size display panels, the parasitic capacitance between the electrodes and ground increases, leading to a significant decrease in detection performance. Self-capacitive touch, on the other hand, detects the self-capacitance changes between the touch electrodes and ground, without needing to counteract the parasitic capacitance between the electrodes and ground. Therefore, the technical solution provided in this invention can achieve superior touch performance when applied to large-size display panels.

[0021] See you again Figure 2 The display panel also includes touch signal lines 10, and touch electrodes 8 are electrically connected to touch signal lines 10 in a one-to-one correspondence. The touch signal lines 10 can be located on the side of the first metal layer 4 close to the substrate 1. For example, the substrate 1 includes a substrate and an array layer, the array layer includes metal traces, and the touch signal lines 10 can be located in the array layer and disposed on the same layer as some of the original metal traces in the array layer.

[0022] See you again Figure 2The display panel also includes a cathode signal line 11, and cathodes 6 are electrically connected to the cathode signal line 11. For example, multiple cathodes 6 arranged in the same direction along the extension direction of the cathode signal line 11 can be connected to the same cathode signal line 11. The cathode signal line 11 is also electrically connected to the cathode bus in the non-display area to transmit the cathode signal provided by the cathode bus to each cathode 6, thereby realizing normal display. The cathode signal line 11 can be located on the side of the first metal layer 4 near the substrate 1, for example, in the array layer, and is disposed on the same layer as some existing metal traces in the array layer.

[0023] In embodiments of the present invention, such as Figure 1 As shown, a cathode 6 may overlap only with an opening 5 in a direction perpendicular to the plane of the substrate 1, or it may be as follows: Figure 3 As intended, Figure 3 This is another schematic diagram of the display panel provided in an embodiment of the present invention. A cathode 6 may also overlap with at least two openings 5 ​​in a direction perpendicular to the plane of the substrate 1.

[0024] In one feasible implementation, see again Figure 2 Multiple touch electrodes 8 correspond one-to-one with multiple cathodes 6, with each touch electrode 8 surrounding its corresponding cathode 6. A first shielding electrode 7 surrounds the cathode 6 within the gap between the touch electrodes 8 and the cathodes 6.

[0025] For example, multiple cathodes are M The matrix arrangement is N, and correspondingly, the multiple touch electrodes are also arranged in an M-shape. The matrix arrangement of N.

[0026] The cathode 6 is a block electrode to better overlap with the opening 5. By designing the touch electrode 8 as a ring electrode surrounding the cathode 6, its shape can be better adapted to the shape of the cathode, improving space utilization. Moreover, the touch electrode 8 surrounding the cathode 6 provides sufficient coupling area between the touch electrode 8 and the finger, ensuring a more significant change in capacitance when touched, thus contributing to improved touch detection accuracy. Furthermore, the first shielding electrode 7 surrounds the cathode 6 between the touch electrode 8 and the cathode 6, providing greater protection against interference from the touch signal to the cathode signal.

[0027] In one feasible implementation, Figure 4 This is another schematic diagram of a display panel provided in an embodiment of the present invention. Figure 5 This is another schematic diagram of a display panel provided in an embodiment of the present invention, such as... Figure 4 and Figure 5As shown, the display panel also includes a second metal layer 12, which is located between the pixel definition layer 2 and the substrate 1. The second metal layer 12 includes a first structure 13 for transmitting anode signals. In a direction perpendicular to the plane of the substrate 1, at least a portion of the touch electrode 8 overlaps with the first structure 13.

[0028] The display panel also includes a second shielding electrode 14, which receives a second signal, which may be a constant voltage signal. Furthermore, the second shielding electrode 14 is included between the touch electrode 8 and the first structure 13 along a direction perpendicular to the plane of the substrate 1. For example, the second shielding electrode 14 at least covers the area directly opposite the touch electrode 8 and the first structure 13.

[0029] When at least a portion of the touch electrode 8 overlaps with the first structure 13 used for transmitting the anode signal, a second shielding electrode 14 can be used to shield the anode signal from the influence of touch signal transitions by placing the touch electrode 8 and the first structure 13 at their opposite positions. The stability of the anode signal of the light-emitting device significantly affects its brightness. Therefore, this technical solution can effectively improve the stability of the anode signal when touch signal transitions, reducing the impact of touch on the display.

[0030] Furthermore, see again Figure 4 and Figure 5 The substrate 1 includes a substrate 15 and an array layer 16, and the array layer 16 includes a pixel circuit 17.

[0031] The second metal layer 12 includes an anode 18, which overlaps with the opening 5 in a direction perpendicular to the plane of the substrate 1, and the light-emitting layer 3 is located on the side of the anode 18 away from the substrate 1.

[0032] Among them, see Figure 4 The first structure 13 includes an anode 18.

[0033] That is, when the touch electrode 8 and the anode 18 overlap in a direction perpendicular to the plane of the substrate 1, the second shielding electrode 14 can be provided at intervals at the overlapping position to shield the interference of the touch signal on the signal on the anode 18.

[0034] And / or, see Figure 5 The first structure 13 includes a first connecting line 19, and at least a portion of the pixel circuit 17 is electrically connected to the anode 18 through the first connecting line 19.

[0035] That is, when the touch electrode 8 and the first connecting line 19 overlap in a direction perpendicular to the plane of the substrate 1, the second shielding electrode 14 can be used to shield the touch signal from interfering with the signal on the first connecting line 19 by spacing the second shielding electrode 14 at the overlapping position.

[0036] Further, see Figure 5 The first connection line 19 includes a first sub-line 20 and / or a second sub-line 21. The first sub-line 20 is located in the array layer 16, and the second sub-line 21 is located in the second metal layer 12. The transistor in the pixel circuit 17 that needs to be connected to the anode 18 is led to the punched location via the first sub-line 20, then switched to the second sub-line 21, and led to the anode 18 via the second sub-line 21, thereby achieving the connection between the pixel circuit 17 and the anode 18. When the touch electrode 8 and the first sub-line 20 overlap in a direction perpendicular to the plane of the substrate 15, a second shielding electrode 14 can be spaced at the overlapping location. Similarly, when the touch electrode 8 and the second sub-line 21 overlap in a direction perpendicular to the plane of the substrate 15, a second shielding electrode 14 can be spaced at the overlapping location.

[0037] In one feasible implementation, see Figure 4 and Figure 5 The second shielding electrode 14 is located on the side of the pixel definition layer 2 away from the substrate 1 and is in contact with the pixel definition layer 2.

[0038] The side of the pixel definition layer 2 away from the substrate 1 includes a common layer 22, which may specifically include films such as a hole injection layer (HIL), a hole transport layer (HTL), an electron transport layer (ETL), and an electron injection layer (EIL).

[0039] The second shielding electrode 14 is in contact with the pixel definition layer 2, which means that the second shielding electrode 14 is located between the pixel definition layer 2 and the common layer 22. After the pixel definition layer 2 is formed, the second shielding electrode 14 is formed first, and then the common layer 22 is formed. This can avoid the setting of the second shielding electrode 14 from affecting the process flow and stacking structure of the common layer 22.

[0040] In one feasible implementation, see Figures 4-11 The display panel also includes a first electrode 23, through which the first shielding electrode 7 receives a first signal.

[0041] The first electrode 23 is located on the side of the pixel definition layer 2 away from the first metal layer 4. The first shielding electrode 7 is separated from the first electrode 23 by at least one insulating layer, which includes at least the pixel definition layer. The first shielding electrode 7 is electrically connected to the first electrode 23 through a via penetrating these insulating layers.

[0042] The first electrode 23 can be directly or indirectly connected to a pin used to provide a first signal. The first electrode 23 receives the first signal provided by the driver chip and further transmits it to the first shielding electrode 7. Since there are many metal layers below the pixel definition layer 2, by placing the first electrode 23 below the pixel definition layer 2, the film layer position of the first electrode 23 is more flexible, and the wiring design is more optimized.

[0043] Furthermore, Figure 6 This is another schematic diagram of a display panel provided in an embodiment of the present invention, such as... Figure 6 As shown, the display panel includes a plurality of first electrodes 23 arranged along a first direction x, the first electrodes 23 extending along a second direction y, the second direction y intersecting the first direction x.

[0044] In this structure, a first electrode 23 can be electrically connected to a plurality of first shielding electrodes 7 arranged along the second direction y, and the connection design between the first electrode 23 and the first shielding electrodes 7 is more optimized. Moreover, the first electrode 23 is a strip structure, such as a metal wire, which makes it easier to receive and transmit the first signal from the pin to the first shielding electrode 7.

[0045] Furthermore, Figure 7 This is another schematic diagram of a display panel provided in an embodiment of the present invention. Figure 8 This is another schematic diagram of a display panel provided in an embodiment of the present invention, such as... Figure 7 and Figure 8 As shown, substrate 1 includes an array layer 16, which includes a pixel circuit 17 and a first signal line 24. The first signal line 24 is electrically connected to the pixel circuit 17 and extends along a second direction y. The first electrode 23 is on the same layer as the first signal line 24.

[0046] The array layer 16 includes multiple metal layers. The first electrode 23 is selected to be placed on the metal layer where the first signal line 24 is located. The first electrode 23 and the first signal line 24 extend in the same direction, so the wiring will not conflict and it is convenient to wire the first electrode 23.

[0047] In one feasible implementation, see Figure 4 and Figure 5 The second shielding electrode 14 is electrically connected to the first shielding electrode 7, and the second signal is the same as the first signal.

[0048] The first shielding electrode 7 and the second shielding electrode 14 are electrically connected and receive the same shielding signal. The shielding signal design is simple, and the first shielding electrode 7 and the second shielding electrode 14 do not need to be connected to different signal transmission structures, which can simplify the panel structure.

[0049] Furthermore, see again Figure 4 and Figure 5The display panel also includes a first electrode 23, through which the first shielding electrode 7 receives a first signal. The first electrode 23 is on the same layer as and connected to the second shielding electrode 14; that is, the first electrode 23 in this structure is located on the side of the pixel definition layer 2 away from the substrate 1.

[0050] In this structure, the first shielding electrode 7 is electrically connected to the first electrode 23 through a via. Since the first electrode 23 and the second shielding electrode 14 are on the same layer, the second shielding electrode 14 can be directly connected to the first electrode 23, so that both the first shielding electrode 7 and the second shielding electrode 14 receive the same shielding signal through the first electrode 23.

[0051] The structure of the first electrode 23 in this structure can be as follows: Figure 6 The image shows a strip electrode.

[0052] or, Figure 9 This is another schematic diagram of a display panel provided in an embodiment of the present invention, such as... Figure 9 As shown, when the first shielding electrode 7 and the second shielding electrode 14 receive the same shielding signal, the first electrode 23 can also be located in the array layer 16. The display panel also includes a second electrode 30, which is on the same layer as the first electrode 23 and connected thereto. The second shielding electrode 14 is electrically connected to the second electrode 30 through a via, thereby enabling it to receive the same signal as the first shielding electrode 7.

[0053] In one feasible implementation, the second signal is different from the first signal.

[0054] Since the cathode signal is different from the anode signal, the first shielding electrode 7 and the second shielding electrode 14 can receive different shielding signals respectively, so as to better shield the interference of the touch signal on the cathode signal and the anode signal.

[0055] When the first shielding electrode 7 and the second shielding electrode 14 receive different shielding signals respectively Figure 10 This is another schematic diagram of a display panel provided in an embodiment of the present invention. Figure 11 This is another schematic diagram of a display panel provided in an embodiment of the present invention, such as... Figure 10 and Figure 11 As shown, the first shielding electrode 7 receives the first signal through the first electrode 23, and the second shielding electrode 14 is electrically insulated from the first shielding electrode 7. The second shielding electrode 14 can be directly led to the pin to receive the first signal, or it can be... Figure 11 As shown, the display panel also includes a second electrode 30, which is on the same layer as the first electrode 23 and electrically insulated from it. A second shielding electrode 14 is electrically connected to the second electrode 30 through a via. The second shielding electrode 14 receives a second signal through the second electrode 30. The second electrode 30 is electrically connected to a pin used to provide a first signal.

[0056] In one feasible implementation, the cathode 6 transmits a cathode signal, the first signal being identical to the cathode signal, and the first shielding electrode 7 is electrically insulated from the cathode 6. That is, there is no physical connection between the first shielding electrode 7 and the cathode 6; the first shielding electrode 7 receives the same signal as the cathode signal as a shielding signal through other structures.

[0057] When the first shielding electrode 7 receives the same shielding signal as the cathode signal, the potential between the first shielding electrode 7 and the cathode 6 is equal, which can eliminate the potential difference between the first shielding electrode 7 and the cathode 6. The potential between the first electrode 23 on the touch electrode 8 and the shielding electrode is equal, and there is no electric field difference. Therefore, the electric field generated by the signal jump of the touch electrode 8 will not be further coupled to the cathode 6 through the first shielding electrode 7, and the first shielding electrode 7 can achieve a better shielding effect.

[0058] In one feasible implementation, Figure 12 This is a schematic diagram of the pixel circuit 17 provided in an embodiment of the present invention. Figure 13 This is another schematic diagram of a display panel provided in an embodiment of the present invention. Figure 14 This is another schematic diagram of a display panel provided in an embodiment of the present invention, such as... Figures 12-14 As shown, the substrate 1 includes an array layer 16, and the array layer 16 includes a pixel circuit 17. The pixel circuit 17 includes a driving transistor T0 and a second structure 25. The second structure 25 transmits the gate signal of the driving transistor T0. In a direction perpendicular to the plane of the substrate 1, at least a portion of the touch electrode 8 overlaps with the second structure 25.

[0059] The display panel also includes a third shielding electrode 26, which receives a third signal, which can be a constant voltage signal. The third shielding electrode 26 is located between the touch electrode 8 and the second structure 25 along a direction perpendicular to the plane of the substrate 1.

[0060] The gate potential of the driving transistor T0 has a significant impact on its operating state, which in turn greatly affects the accuracy of the driving current converted by the driving transistor T0. When at least part of the touch electrode 8 overlaps with the second structure 25 used to transmit the gate signal of the driving transistor T0, by providing a third shielding electrode 26 at intervals at the opposite positions of the touch electrode 8 and the second structure 25, the influence of touch signal transitions on the gate signal of the driving transistor T0 can be shielded, improving the stability of the gate potential of the driving transistor T0 and thus reducing interference between touch and display.

[0061] The second structure 25 may include a second connecting line 27, which is electrically connected to the gate of the driving transistor T0. Furthermore, the second connecting line 27 is also electrically connected to the first reset transistor T2 and / or the threshold compensation transistor T4. When the touch electrode 8 overlaps with the second connecting line 27, a third shielding electrode 26 may be provided at an interval between the touch electrode 8 and the second connecting line 27.

[0062] When the first electrode 23 is located on the side of the second structure 25 away from the substrate 15, the third shielding electrode 26 can be disposed in the same layer as the first electrode 23.

[0063] In other optional embodiments of the present invention, the pixel circuit 17 further includes a third structure and a fourth structure. The third structure transmits the signal of the first terminal of the driving transistor T0, and the fourth structure transmits the signal of the second terminal of the driving transistor T0. When the touch electrode 8 and the third structure overlap in a direction perpendicular to the plane of the substrate 1, the display panel further includes a fourth shielding electrode, which is spaced between the touch electrode 8 and the third structure in a direction perpendicular to the plane of the substrate 1. When the touch electrode 8 and the fourth structure overlap in a direction perpendicular to the plane of the substrate 1, the display panel further includes a fifth shielding electrode, which is spaced between the touch electrode 8 and the third structure in a direction perpendicular to the plane of the substrate 1, thereby preventing the transition of the touch signal from affecting the potential stability of the first and second terminals of the driving transistor T0.

[0064] In this embodiment of the invention, the display phase and the touch detection phase can be performed synchronously. For example, a frame driving time includes multiple display periods, and one display period can drive a row of pixel circuits 17. Touch detection can be performed synchronously during at least a portion of the display periods. Alternatively, the driving process includes multiple frames, and touch detection is performed synchronously during the display driving process of at least a portion of the frames.

[0065] Because the embodiments of the present invention can utilize shielding electrodes to shield the influence of touch signals on cathode signals, anode signals, and node signals of driving transistors, interference with the display can be avoided even when touch and display are performed simultaneously. In this method, touch detection no longer needs to wait for the display driving interval but can be performed in parallel with the display driving, thus increasing the touch sampling frequency and making touch detection more accurate.

[0066] The following is combined Figure 12 The following is a schematic illustration of one structure of the pixel circuit 17. The pixel circuit 17 includes: Drive transistor T0.

[0067] The first reset transistor T2 has its gate electrically connected to the first scan line s1n, its first terminal electrically connected to the first reset line ref1, and its second terminal electrically connected to the gate of the driving transistor T0.

[0068] The data writing transistor T5 has its gate electrically connected to the second scan line sp1, its first terminal electrically connected to the data line Data, and its second terminal electrically connected to the first terminal of the driving transistor T0.

[0069] The threshold compensation transistor T4 has its gate electrically connected to the third scan line s2n, its first terminal electrically connected to the second terminal of the driving transistor T0, and its second terminal electrically connected to the gate of the driving transistor T0.

[0070] The second reset transistor T3 has its gate electrically connected to the fourth scan line sp2, its first electrode electrically connected to the second reset line ref2, and its second electrode electrically connected to the light-emitting element 31.

[0071] The first light-emitting control transistor T1 has its gate electrically connected to the light-emitting control signal line Emit, its first terminal electrically connected to the first power supply line pvdd1, and its second terminal electrically connected to the first terminal of the driving transistor T0.

[0072] The second light-emitting control transistor T6 has its gate electrically connected to the light-emitting control signal line Emit, its first electrode electrically connected to the second electrode of the driving transistor T0, and its second electrode electrically connected to the light-emitting element 31.

[0073] The storage capacitor Cst is electrically connected between the first power supply line pvdd1 and the gate of the driving transistor T0.

[0074] This structure is only a schematic illustration of the pixel circuit 17. In other optional embodiments, the pixel circuit 17 may also adopt other circuit structures, which will not be illustrated one by one in the embodiments of the present invention.

[0075] Based on the same inventive concept, embodiments of the present invention also provide a display device. Figure 15 This is a schematic diagram of a display device provided in an embodiment of the present invention, such as... Figure 15 As shown, the display device includes the aforementioned display panel 100. Of course, Figure 15 The display device shown is for illustrative purposes only. The display device can be any electronic device with display function, such as a mobile phone, tablet computer, laptop computer, e-reader or television.

[0076] 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 within the scope of protection of the present invention.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions 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, include: substrate; A pixel definition layer, located on one side of the substrate, has multiple openings; The light-emitting layer is located at least within the opening; A first metal layer, located on the side of the pixel definition layer away from the substrate, includes a cathode, a first shielding electrode, and a touch electrode spaced apart from each other. In a direction perpendicular to the plane of the substrate, the cathode overlaps with the opening. The first shielding electrode receives a first signal. The first shielding electrode is located between the cathode and the touch electrode.

2. The display panel according to claim 1, characterized in that, Each of the multiple touch electrodes corresponds to one of the multiple cathodes, with the touch electrode surrounding its corresponding cathode, and the first shielding electrode surrounding the cathode within the gap between the touch electrode and the cathode.

3. The display panel according to claim 1, characterized in that, Also includes: The second metal layer, located between the pixel definition layer and the substrate, includes a first structure for transmitting anode signals, wherein at least a portion of the touch electrodes overlaps with the first structure in a direction perpendicular to the plane of the substrate. The second shielding electrode receives the second signal and is located in a direction perpendicular to the plane of the substrate. The touch electrode and the first structure include the second shielding electrode.

4. The display panel according to claim 3, characterized in that, The substrate includes an array layer, and the array layer includes pixel circuitry; The second metal layer includes an anode, which overlaps with the opening in a direction perpendicular to the plane of the substrate, and the light-emitting layer is located on the side of the anode away from the substrate; Wherein, the first structure includes the anode, and / or the first structure includes a first connecting line, and at least a portion of the pixel circuit is electrically connected to the anode through the first connecting line.

5. The display panel according to claim 3, characterized in that, The second shielding electrode is located on the side of the pixel definition layer away from the substrate and is in contact with the pixel definition layer.

6. The display panel according to claim 3, characterized in that, The second shielding electrode is electrically connected to the first shielding electrode, and the second signal is the same as the first signal.

7. The display panel according to claim 6, characterized in that, The display panel further includes a first electrode, and the first shielding electrode receives the first signal through the first electrode; The first electrode and the second shielding electrode are in the same layer and connected.

8. The display panel according to claim 3, characterized in that, The second signal is different from the first signal.

9. The display panel according to claim 1, characterized in that, The cathode transmits a cathode signal, the first shielding electrode is electrically insulated from the cathode, and the first signal and the cathode signal are the same.

10. The display panel according to claim 1, characterized in that, The display panel further includes a first electrode, and the first shielding electrode receives the first signal through the first electrode; The first electrode is located on the side of the pixel definition layer away from the first metal layer.

11. The display panel according to claim 10, characterized in that, The display panel includes a plurality of first electrodes arranged along a first direction, the first electrodes extending along a second direction, the second direction intersecting the first direction; The substrate includes an array layer, the array layer includes a pixel circuit and a first signal line, the first signal line is electrically connected to the pixel circuit and extends along the second direction; The first electrode is on the same layer as the first signal line.

12. The display panel according to claim 1, characterized in that, The substrate includes an array layer, the array layer includes a pixel circuit, the pixel circuit includes a driving transistor and a second structure, the second structure transmits the gate signal of the driving transistor, and at least a portion of the touch electrode overlaps with the second structure in a direction perpendicular to the plane of the substrate. The display panel further includes a third shielding electrode, which receives a third signal along a direction perpendicular to the plane of the substrate. The third shielding electrode is located between the touch electrode and the second structure.

13. A display device comprising a display panel as described in any one of claims 1 to 12.

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