A display panel and a display device

Abstract

The present invention discloses a display panel and a display device. The display panel includes: a plurality of scan lines; a plurality of data lines; a pixel circuit, the pixel circuit including a first switching module, a second switching module, and a pixel electrode; the control ends of the first switching module and the second switching module are connected to the same corresponding scan line, and the second end of the first switching module of the pixel circuit in the m-th row is connected to the pixel electrode of the pixel circuit in the n-th row, where m is less than n. By setting the second end of the first switching module of the pixel circuit in the m-th row to be connected to the pixel electrode of the pixel circuit in the n-th row, the present invention can pre-charge the pixel electrode on the n-th row when the pixel electrode in the m-th row is charged, thereby stabilizing the pixel voltage on the n-th row. When the pixel electrode of the pixel circuit in the m-th row leaks electricity, the charge of the pixel electrode of the pixel circuit in the n-th row is supplemented, and the leakage path of the leakage current is increased to increase the voltage holding ratio of the pixel electrode and improve the display effect of the display panel.

Description

Technical Field

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

[0002] Each pixel on the display panels of thin film transistor liquid crystal displays (TFT-LCDs) and electronic paper displays (EPDs) is driven by a thin film transistor integrated therebehind, so that high-speed, high-brightness, and high-contrast displays can be achieved.

[0003] The display panel in the prior art includes data lines, scan lines, and pixel electrodes. A thin film transistor is formed at the intersection of the data line and the scan line. The control terminal of the thin film transistor is connected to the scan line, the source electrode of the thin film transistor is connected to the data line, and the drain electrode of the thin film transistor is connected to the pixel electrode. Figure 1 is a schematic structural diagram of a display panel provided by the prior art. As Figure 1 shown, the display panel includes a scan line gate and a data line data. Regarding the common electrode as ground GND, a storage capacitor Cst is formed between the pixel electrode connected to the thin film transistor M1 and the common electrode. At the same time, there is also a parasitic capacitor Clc. When the thin film transistor M1 is reversely biased, due to the existence of free electrons, the free electrons attach to the active layer of the thin film transistor M1, resulting in a small leakage current between the drain electrode and the source electrode of the thin film transistor M1.

[0004] When the leakage current is too large during the design of the display panel, some problems will occur. For example, when the leakage current is too large, it will have a certain impact on the holding rate of the pixel voltage. When the gate of the thin film transistor M1 is closed, the holding voltage drops too fast. When it exceeds 2 gray levels, it will cause the phenomenon of pixel flicker in the display panel. On the other hand, if the leakage current is too large, it will cause an increase in the DC component remaining during pixel discharge, resulting in charge residue, and thus causing image sticking when the display panel is displaying, reducing the display effect of the display panel. Summary of the Invention

[0005] The present invention provides a display panel and a display device, which can pre-charge the pixel electrodes on the nth row when the pixel electrodes on the mth row are charged, so as to stabilize the pixel voltage on the nth row. When the pixel electrodes of the pixel circuit on the mth row are leaking electricity, the charges of the pixel electrodes of the pixel circuit on the nth row are supplemented, increasing the leakage path of the leakage current to increase the voltage holding rate of the pixel electrodes and improving the display effect of the display panel.

[0006] In a first aspect, an embodiment of the present invention provides a display panel, including: a plurality of scan lines; a plurality of data lines; pixel circuits arranged in an array defined by the intersection of the scan lines and the data lines, the pixel circuits including a first switching module, a second switching module, and a pixel electrode; both the first switching module and the second switching module include a first end, a second end, and a control end; the first end of the first switching module is connected to the corresponding data line, the second end of the first switching module is connected to the first end of the second switching module, and the second end of the second switching module is connected to the pixel electrode; the control ends of the first switching module and the second switching module are connected to the corresponding same scan line, and the first switching module and the second switching module are configured to conduct or turn off in response to a scan signal on the scan line. The second end of the first switching module of the pixel circuit in the m-th row is connected to the pixel electrode of the pixel circuit in the n-th row, where m is less than n, and both m and n are positive integers.

[0007] Optionally, n = m + 1.

[0008] Optionally, in the same column, the second end of the first switching module of the pixel circuit in the m-th row is connected to the pixel electrode of the pixel circuit in the n-th row.

[0009] Optionally, when the pixel electrode in the m-th row is charged, the pixel electrode in the n-th row is pre-charged.

[0010] Optionally, when the first switching module and the second switching module of the pixel circuit in the m-th row are turned off, the leakage of the pixel electrode of the pixel circuit in the m-th row replenishes the charge of the pixel electrode of the pixel circuit in the n-th row.

[0011] Optionally, the first switching module includes a first thin-film transistor, and the second switching module includes a second thin-film transistor. The first pole, the second pole, and the gate of the first thin-film transistor serve as the first end, the second end, and the control end of the first switching module respectively; the first pole, the second pole, and the gate of the second thin-film transistor serve as the first end, the second end, and the control end of the second switching module respectively.

[0012] Optionally, the display panel includes a first metal layer, a second metal layer, and a third metal layer; the scan lines are located in the first metal layer, the data lines are located in the second metal layer, and the pixel electrodes are located in the third metal layer; there is a first metal part connected between the second pole of the first thin-film transistor of the pixel circuit in the current row and the pixel electrode in the next row; there is a second metal part connected between the second pole of the second thin-film transistor and the pixel electrode in the current row; both the first metal part and the second metal part are L-shaped.

[0013] Optionally, the display panel further includes a common electrode, and the common electrode is in a different layer from the first metal layer, the second metal layer, and the third metal layer.

[0014] Optionally, the display panel includes a liquid crystal display panel or an electronic paper display panel.

[0015] In a second aspect, an embodiment of the present invention provides a display device, which includes the display panel provided in the first aspect.

[0016] For the display panel provided in the embodiment of the present invention, by connecting the control terminals of the first switch module and the second switch module to the corresponding same scanning line, and connecting the second terminal of the first switch module of the pixel circuit in the m-th row to the pixel electrode of the pixel circuit in the n-th row, when the pixel electrode in the m-th row is charged, the pixel electrode in the n-th row can be pre-charged, so as to stabilize the pixel voltage in the n-th row. When the pixel electrode of the pixel circuit in the m-th row leaks electricity, the charge of the pixel electrode of the pixel circuit in the n-th row is supplemented, and the charge is supplemented to the pixel electrode of the pixel circuit in the n-th row by using the leakage current of the opposite pixel electrode, so as to increase the voltage holding ratio of the pixel electrode, thereby improving the overall display effect of the display panel.

[0017] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 is a schematic structural diagram of a display panel provided by the prior art;

[0020] Figure 2 is a schematic cross-sectional structure diagram of a display panel in the prior art;

[0021] Figure 3 is a schematic structural diagram of a display panel provided by an embodiment of the present invention;

[0022] Figure 4 is Figure 3 a connection schematic diagram of several pixel circuits in

[0023] Figure 5 is a schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0024] Figure 6 is a schematic working timing diagram of a display panel provided by an embodiment of the present invention;

[0025] Figure 7 is a schematic cross-sectional structure diagram of a display panel provided by an embodiment of the present invention;

[0026] Figure 8 It is a simulation diagram of a display panel provided by an embodiment of the present invention;

[0027] Figure 9 It is a schematic structural diagram of a display device provided by an embodiment of the present invention. Detailed implementation manners

[0028] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0029] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0030] As described in the background art, in the prior art, when the thin-film transistor is reverse-biased, due to the existence of free electrons, the free electrons attach to the active layer of the thin-film transistor, resulting in a small leakage current between the drain and the source of the thin-film crystal. Figure 2 It is a schematic cross-sectional structure diagram of a display panel in the prior art, where Figure 2 only a part of the structure of the display panel is schematically shown. Refer to Figure 1 , the leakage current path 10 generated by the thin-film transistor mainly leaks to the data line through the pixel electrode (i.e., the storage capacitor Cst), causing a voltage drop in the storage capacitor Cst and affecting the voltage value of the pixel electrode, which has a certain impact on the voltage holding ratio of the pixel electrode.

[0031] Based on the above problems, the embodiments of the present invention provide a display panel to increase the leakage path of the leakage current, so as to increase the voltage holding ratio of the pixel electrode and improve the display effect of the display panel. Figure 3 It is a schematic structural diagram of a display panel provided by an embodiment of the present invention, Figure 4 is Figure 3Schematic diagram of the connection of several pixel circuits in the present invention. Embodiments of the present invention are applicable to the cases of TFT-LCD or EPD displays. In combination with Figure 3 and Figure 4 , the display panel 10 includes a plurality of scan lines 100; a plurality of data lines 200; and pixel circuits 300 arranged in an array defined by the intersection of the scan lines 100 and the data lines 200.

[0032] Among them, the pixel circuit 300 includes a first switch module 310, a second switch module 320, and a pixel electrode; both the first switch module 310 and the second switch module 320 include a first end, a second end, and a control end; the first end of the first switch module 310 is connected to the corresponding data line 200, the second end of the first switch module 310 is connected to the first end of the second switch module 320, and the second end of the second switch module 320 is connected to the pixel electrode; the control ends of the first switch module 310 and the second switch module 320 are connected to the corresponding same scan line 100, and the first switch module 310 and the second switch module 320 are used to conduct or turn off in response to the scan signal on the scan line 100. The second end of the first switch module 310 of the pixel circuit 300 in the m-th row is connected to the pixel electrode of the pixel circuit 300 in the n-th row, where m is less than n, and both m and n are positive integers.

[0033] The scan signal transmitted on the scan line 100 can control the conduction or turn-off of the first switch module 310 and the second switch module 320. In one embodiment, the scan line 100 is connected to a scan driver, and the scan driver is disposed in the left and right border areas of the display panel. The scan driver usually consists of a plurality of cascaded shift registers, and the shift registers are connected to clock signal lines, high-potential signal lines, low-potential signal lines, etc. disposed in the border area. The cascaded shift registers generate a scan signal according to the control of the signals on the clock signal line, high-potential signal line, and low-potential signal line and output it to the scan line. The cascaded shift registers sequentially provide the scan signal with a conductive level pulse to the scan line 100. The data line 200 is connected to a data driver, and the data driver is disposed in the lower border area or on a flexible circuit board bonded to the lower border area. The data driver can be a display driver chip (Display Driver IC, DDIC), and the data driver provides a data voltage to the data line 200. In another embodiment, both the scan line 100 and the data line 200 are connected to the data driver, and the data driver provides a scan signal to the scan line 100 and a data voltage to the data line 200. Figure 3 Schematically shows the case where the scan driver is disposed in the left border area of the display panel 10 and the data driver is disposed in the lower border area of the display panel.

[0034] Among them, the scanning line 100 transmits a scanning signal to the pixel circuit 300, the data line 200 transmits a data signal to the pixel circuit 300, one pixel circuit 300 corresponds to one sub-pixel, and the pixel circuit 300 controls the light emission of the sub-pixel according to the data signal and the scanning signal to achieve image display. The first switching module 310 and the second switching module 320 can be thin film transistors. When the first switching module 310 and the second switching module 320 are turned on, the data voltage on the data line 200 is transmitted to the pixel electrode through the turned-on first switching module 310 and second switching module 320. The display panel 10 further includes a common electrode, and a storage capacitor Cst and a parasitic capacitor Clc are formed between the pixel electrode and the common electrode. The data voltage transmitted to the pixel electrode is stored, and the data voltage is used to control the light emission brightness of the sub-pixel, and further control the display picture of the display panel 10.

[0035] Continue to refer to Figure 3 and Figure 4 , one scanning line 100 is correspondingly arranged for each row of pixel circuits 300, the first switching module 310 and the second switching module 320 in the pixel circuit 300 are connected to the correspondingly arranged scanning line 100, one data line 200 is correspondingly arranged for each column of pixel circuits 300, and the first switching module 310 in the pixel circuit is connected to the correspondingly arranged data line 200. Continue to refer to Figure 3, the working process of the display panel 10 is as follows: The scanning signal on the first row of scanning lines 100 controls the first switching module 310 and the second switching module 320 connected to the first row to conduct, and the data voltage on the data line 200 is transmitted to the pixel electrodes of the first row. The first switching modules 310 and the second switching modules 320 of other rows are all turned off; The scanning signal on the second row of scanning lines 100 controls the first switching module 310 and the second switching module 320 connected to the second row to conduct, and the data voltage on the data line 200 is transmitted to the pixel electrodes of the second row. The first switching modules 310 and the second switching modules 320 of other rows are all turned off;...; The scanning signal on the k-th row of scanning lines 100 controls the first switching module 310 and the second switching module 320 connected to the k-th row to conduct, and the data voltage on the data line 200 is transmitted to the pixel electrodes of the k-th row. Since the second end of the first switching module 310 of the m-th row pixel circuit 300 is connected to the pixel electrode of the n-th row pixel circuit 300, when the first switching module 310 of the m-th row pixel circuit 300 conducts, while transmitting the data voltage to the pixel electrode of the m-th row, it will also transmit the data voltage to the pixel electrode of the n-th row pixel circuit 300, pre-charging the pixel electrode of the n-th row, that is, pre-charging the storage capacitor Cst of the n-th row, which is beneficial to stabilizing the voltage of the pixel electrode of the n-th row. In addition, during the period when the first switching module 310 and the second switching module 320 of the m-th row pixel circuit are turned off, the leakage of the pixel electrode of the m-th row pixel circuit compensates for the charge of the pixel electrode of the n-th row to stabilize the voltage of the pixel electrode. Wherein, the m-th row is any row in front of the n-th row. In other words, the pixel circuit of the m-th row is charged first (that is, the process of writing the data voltage to the pixel electrode), and the pixel circuit of the n-th row is charged later. The pixel circuit 300 where the pixel electrode of the n-th row pixel circuit 300 is located and the pixel circuit 300 where the first switching module 310 of the connected m-th row is located can be in the same column or different columns, and the effects of the embodiments of the present invention can be achieved, and the embodiments of the present invention are not limited thereto.

[0036] Since the pixel electrode of the m-th row is pre-charged when charging the pixel electrode of the n-th row, and when the first switching module 310 and the second switching module 320 of the m-th row pixel circuit are turned off, the leakage of the pixel electrode of the m-th row pixel circuit compensates for the charge of the pixel electrode of the n-th row pixel circuit. It is possible to reduce the display defect problem caused by leakage in the prior art.

[0037] The display panel provided by the embodiment of the present invention connects the control terminals of the first switch module and the second switch module to the corresponding same scanning line, and connects the second terminal of the first switch module of the pixel circuit in the m-th row to the pixel electrode of the pixel circuit in the n-th row. When the pixel electrode in the m-th row is charged, the pixel electrode in the n-th row can be pre-charged, so as to stabilize the pixel voltage in the n-th row. When the pixel electrode of the pixel circuit in the m-th row leaks electricity, the charge of the pixel electrode of the pixel circuit in the n-th row is supplemented, and the leakage path of the leakage current is increased to increase the voltage holding ratio of the pixel electrode, thereby improving the overall display effect of the display panel.

[0038] Figure 5 As shown in the structural schematic diagram of another display panel provided by the embodiment of the present invention, Figure 5 Optionally, the display panel 10 provided by the embodiment of the present invention includes a liquid crystal display panel or an electronic paper display panel.

[0039] The first switch module 310 includes a first thin film transistor TFT1, and the second switch module 320 includes a second thin film transistor TFT2. The first pole, second pole and gate of the first thin film transistor TFT1 are respectively used as the first terminal, second terminal and control terminal of the first switch module; the first pole, second pole and gate of the second thin film transistor TFT2 are respectively used as the first terminal, second terminal and control terminal of the second switch module 320.

[0040] It should be noted that the above-mentioned thin film transistor can be an N-type thin film transistor or a P-type thin film transistor; the first pole of the above-mentioned thin film transistor can be the source electrode, the second pole can be the drain electrode, or the first pole of the above-mentioned thin film transistor can be the drain electrode and the second pole can be the source electrode. The present invention does not make any limitations in this regard.

[0041] In the same column, the second terminal of the first switch module 310 of the pixel circuit 300 in the m-th row is connected to the pixel electrode of the pixel circuit in the n-th row.

[0042] Since both the first thin film transistor TFT1 and the second thin film transistor TFT2 are controlled by the scanning line 100, the first thin film transistor TFT1 and the second thin film transistor TFT2 are turned on and off simultaneously.

[0043] When the pixel electrodes of the m-th row are charged, the pixel electrodes of the n-th row are pre-charged. When the first switch module 310 and the second switch module 320 of the pixel circuit 300 of the m-th row are turned off, the leakage of the pixel electrodes of the pixel circuit 300 of the m-th row replenishes the charge of the pixel electrodes of the pixel circuit 300 of the n-th row. Wherein, n = m + 1. In this embodiment, when the pixel electrodes of the m-th row are charged, the storage capacitor Cst of the n-th row can be pre-charged, the voltage of the pixel electrodes of the n-th row can be stabilized, and at the same time, it is beneficial to stabilize the voltage Vds between the source and drain electrodes of the thin film transistor. When the pixel electrodes of the m-th row are leaking, the charge of the pixel electrodes of the n-th row can be replenished, making the voltage of a single pixel more stable. By connecting the first pole of the first thin film transistor TFT1 of the m-th row to the pixel electrode of the n-th row, the path of the leakage current is increased, the leakage current can be effectively reduced, and the voltage holding ratio of the pixel electrode can be improved, thereby improving the display effect of the display panel. That is to say, for two adjacent rows, when the pixel electrodes of the previous row are charged, the pixel electrodes (i.e., the storage capacitors) of the next row can be charged. On the basis of improving the voltage holding ratio of the pixel electrodes, the wiring length can be saved, the difficulty of wiring and the interference between signals can be reduced, and the display effect of the display panel can be further improved.

[0044] Figure 6 It is a schematic diagram of the working timing of a display panel provided by an embodiment of the present invention. This working timing diagram is applicable to Figure 5 the display panel shown. Combining Figure 5 and Figure 6 , taking the example that all thin film transistors in the display panel are N-type thin film transistors for illustration. Exemplarily, the driving process of the shift register includes multiple stages.

[0045] In the first stage t01, at this time, the first row scan signal G1 is in a high level state, the first thin film transistor TFT1 and the second thin film transistor TFT2 of the first row pixel circuit are turned on, and the first row pixel electrodes start to be charged, that is, the data voltage is written into the pixel electrodes, and at the same time, the pixel electrodes of the second row pixel circuit are pre-charged.

[0046] In the second stage t02, at this time, the second row scan signal G2 is in a high level state, the first thin film transistor TFT1 and the second thin film transistor TFT2 of the second row pixel circuit are turned on, and the second row pixel electrodes start to be charged, that is, the data voltage is written into the pixel electrodes, and at the same time, the pixel electrodes of the third row pixel circuit are pre-charged.

[0047] In the third stage t03, at this time, the third row scan signal G3 is in a high level state, the first thin film transistor TFT1 and the second thin film transistor TFT2 of the third row pixel circuit are turned on, and the third row pixel electrodes start to be charged, that is, the data voltage is written into the pixel electrodes, and at the same time, the pixel electrodes of the fourth row pixel circuit are pre-charged.

[0048] In the fourth stage t04, the scanning signal G3 of the fourth row is in a high level state, the first thin film transistor TFT1 and the second thin film transistor TFT2 of the third row pixel circuit are turned on, the pixel electrode of the third row starts to be charged, the data voltage is about to be written into the pixel electrode, and at the same time, the pixel electrode of the fifth row pixel circuit is pre-charged.

[0049] Figure 7 It is a schematic cross-sectional structure diagram of a display panel provided by an embodiment of the present invention, as Figure 7 shown. The display panel includes a first metal layer 400, a second metal layer 410, and a third metal layer 420; the scanning line is located in the first metal layer 400, the data line is located in the second metal layer 410, and the pixel electrode is located in the third metal layer 420. The first metal layer 400 is formed on the substrate of the display panel. Before forming the first metal layer 400, a semiconductor layer is formed, and the semiconductor layer is a semiconductor pattern layer. In an exemplary embodiment, forming the semiconductor pattern layer may include: sequentially depositing a first insulating layer and a semiconductor thin film on the substrate, patterning the semiconductor thin film through a patterning process to form a first insulating layer covering the substrate, and a semiconductor pattern layer disposed on the first insulating layer. In an exemplary embodiment, forming the first metal layer 400 may include: sequentially depositing a second insulating thin film and a first metal thin film on the substrate on which the semiconductor layer is formed, patterning the second insulating thin film and the first metal thin film through a patterning process to form a second insulating layer and a first metal layer 400 pattern on the second insulating layer. The first metal layer 400 pattern includes a gate and a scanning line.

[0050] In an exemplary embodiment, forming the second metal layer 410 may include: depositing a third insulating thin film and a second metal thin film on the substrate on which the foregoing pattern is formed, patterning the second metal thin film by a patterning process to form a second metal layer 410 disposed on the second insulating layer. The second metal layer 410 includes source-drain metal electrodes of thin film transistors and data lines. In the embodiment of the present invention, since it is necessary to connect the thin film transistors in the previous row to the pixel electrodes in the subsequent row, the second metal layer 410 further includes a metal part for connecting the transistors in the previous row and the pixel electrodes in the subsequent row. The metal part, the data line, and the source-drain metal electrodes of the thin film transistors are prepared in the same layer without adding additional manufacturing processes.

[0051] In an exemplary embodiment, the shape of the pixel electrode may be rectangular or diamond-shaped, the shape of the data line may be a strip whose main body part extends along the second direction Y, the source-drain metal electrodes of the thin film transistors are connected to the pixel electrode through vias, and the metal part is also connected to the pixel electrode through corresponding vias.

[0052] The "patterning process" described in the present invention, for metal materials, inorganic materials or transparent conductive materials, includes processes such as coating photoresist, mask exposure, development, etching, and photoresist stripping. For organic materials, it includes processes such as coating organic materials, mask exposure, and development. Deposition can be any one or more of sputtering, evaporation, and chemical vapor deposition. Coating can be any one or more of spraying, spin coating, and inkjet printing. Etching can be any one or more of dry etching and wet etching. The present disclosure does not make limitations. A "thin film" refers to a thin film made of a certain material on a substrate by using deposition, coating, or other processes. If the "thin film" does not require a patterning process during the entire manufacturing process, the "thin film" can also be referred to as a "layer". If the "thin film" requires a patterning process during the entire manufacturing process, it is called a "thin film" before the patterning process and a "layer" after the patterning process. The "layer" after the patterning process contains at least one "pattern".

[0053] In an embodiment of the present invention, the metal part includes a first metal part 430 and a second metal part 440. A first metal part 430 is connected between the second pole of the first thin film transistor of the current row pixel circuit and the pixel electrode of the next row; a second metal part 440 is connected between the second pole of the second thin film transistor and the pixel electrode of the current row; both the first metal part 430 and the second metal part 440 are L-shaped.

[0054] The display panel further includes a common electrode, and the common electrode is in a different layer from the first metal layer 400, the second metal layer 410, and the third metal layer 420.

[0055] When the pixel electrode of the previous row is charged, the pixel electrode of the next row (i.e., the storage capacitor) can be charged. When the pixel electrode of the previous row has a leakage current, the leakage current path 10 mainly leaks from the pixel electrode of the previous row (i.e., the storage capacitor Cst) to the pixel electrode of the next row (i.e., the storage capacitor Cst), which can realize the charge replenishment of the pixel electrode of the next row and make the voltage of a single pixel more stable. By increasing the path of the leakage current, the leakage current can be effectively reduced, the voltage holding ratio of the pixel electrode can be improved, and thus the display effect of the display panel can be enhanced.

[0056] Figure 8 is a simulation diagram of a display panel provided by an embodiment of the present invention. Refer to Figure 8 , the voltage holding ratio 50 of the pixel electrode in the embodiment of the present invention is greater than the voltage holding ratio 60 of the pixel electrode in the ordinary series structure.

[0057] Based on the same inventive concept, an embodiment of the present invention further provides a display device. Figure 9 is a schematic structural diagram of a display device provided by an embodiment of the present invention. As Figure 9 shown, the display device includes any one of the display panels provided by the above embodiments. Exemplarily, asFigure 9 As shown, the display device 20 includes a display panel 10. Therefore, the display device also has the beneficial effects of the display panel in the above embodiments. For the same parts, reference may be made to the explanations of the display panel above, and details will not be repeated hereinafter.

[0058] The display device 20 provided by an embodiment of the present invention may be Figure 9 the electronic paper shown, or any electronic product with a display function, including but not limited to the following categories: mobile phones, televisions, laptop computers, desktop monitors, tablet computers, digital cameras, smart bracelets, smart glasses, in-vehicle displays, industrial control devices, medical display screens, touch interaction terminals, etc. The embodiments of the present invention do not make special limitations on this.

[0059] The above specific embodiments do not constitute a limitation on the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A display panel, characterized in that, Comprising: Multiple scanning lines; Multiple data lines; Pixel circuits arranged in an array defined by the intersection of the scanning lines and the data lines, the pixel circuits including a first switching module, a second switching module, and a pixel electrode; both the first switching module and the second switching module include a first end, a second end, and a control end; the first end of the first switching module is connected to the corresponding data line, the second end of the first switching module is connected to the first end of the second switching module, and the second end of the second switching module is connected to the pixel electrode; the control ends of the first switching module and the second switching module are connected to the same corresponding scanning line, and the first switching module and the second switching module are used to conduct or turn off in response to a scanning signal on the scanning line. The second end of the first switching module of the pixel circuit in the m-th row is connected to the pixel electrode of the pixel circuit in the n-th row, where m is less than n, and both m and n are positive integers.

2. The display panel according to claim 1, characterized in that, n = m + 1.

3. The display panel according to claim 2, characterized in that, In the same column, the second end of the first switching module of the pixel circuit in the m-th row is connected to the pixel electrode of the pixel circuit in the n-th row.

4. The display panel according to any one of claims 1 - 3, characterized in that, When the pixel electrode in the m-th row is charged, the pixel electrode in the n-th row is pre-charged.

5. The display panel according to any one of claims 1 - 3, characterized in that, When the first switching module and the second switching module of the pixel circuit in the m-th row are turned off, the leakage of the pixel electrode of the pixel circuit in the m-th row replenishes the charge of the pixel electrode of the pixel circuit in the n-th row.

6. The display panel according to claim 1, characterized in that, The first switching module includes a first thin-film transistor, and the second switching module includes a second thin-film transistor. The first pole, second pole, and gate of the first thin-film transistor serve as the first end, second end, and control end of the first switching module respectively; the first pole, second pole, and gate of the second thin-film transistor serve as the first end, second end, and control end of the second switching module respectively.

7. The display panel according to claim 6, characterized in that, The display panel includes a first metal layer, a second metal layer, and a third metal layer; The scanning lines are located in the first metal layer, the data lines are located in the second metal layer, and the pixel electrodes are located in the third metal layer; A first metal part is connected between the second pole of the first thin-film transistor of the pixel circuit in this row and the pixel electrode in the next row; a second metal part is connected between the second pole of the second thin-film transistor and the pixel electrode in this row; both the first metal part and the second metal part are L-shaped.

8. The display panel according to claim 7, characterized in that, It further includes a common electrode, and the common electrode is in a different layer from the first metal layer, the second metal layer, and the third metal layer.

9. The display panel according to claim 1, characterized in that, The display panel includes a liquid crystal display panel or an electronic paper display panel.

10. A display device, characterized in that, Including the display panel according to any one of claims 1-9.

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