Display panel and its driving method, display device

Abstract

This invention discloses a display panel and its driving method and display device, relating to the field of display technology. It includes multiple first signal lines extending along a first direction and arranged along a second direction, located in a display area, with the first and second directions intersecting. Multiple first switching units are located in a first non-display area, with the first end of each switching unit connected to a common voltage terminal and a ground terminal via a first control unit, and the second end of each switching unit electrically connected to the first end of the first signal lines. Bonding pads are located in a second non-display area, with the second ends of the first signal lines connected to the bonding pads and a ground terminal via a second control unit. The display panel includes a first operating phase, in which the first switching units are turned on, and both the first and second ends of the first signal lines are electrically connected to the ground terminal. This facilitates the discharge of static electricity from the panel through the ground terminal, improving the anti-static performance of the display product.

Description

Technical Field

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

[0002] From the CRT (Cathode Ray Tube) era to the LCD (Liquid Crystal Display) era, and now to the OLED (Organic Light-Emitting Diode) and LED display era, the display industry has undergone decades of rapid development. The display industry is now inextricably linked to our lives; from traditional mobile phones, tablets, televisions, and PCs, to today's smart wearable devices, VR, automotive displays, and other electronic devices, all rely heavily on display technology.

[0003] With the development of display technology, people have higher and higher requirements for the quality of display products. How to improve the antistatic performance of display panels has become one of the technical problems that urgently need to be solved at this stage. Summary of the Invention

[0004] In view of this, the present invention provides a display panel and its driving method and display device, which aim to improve the overall antistatic performance of display products.

[0005] In a first aspect, the present invention provides a display panel including a display area and a non-display area at least partially surrounding the display area, the non-display area including a first non-display area and a second non-display area located on both sides of the display area along a first direction;

[0006] The display panel includes:

[0007] Multiple first signal lines extending along a first direction and arranged along a second direction are located in the display area, and the first direction and the second direction intersect.

[0008] Multiple first switch units are located in the first non-display area. The first end of the first switch unit is connected to the common voltage terminal and the ground terminal in a time-division manner through the first control unit. The second end of the first switch unit is electrically connected to the first end of the first signal line.

[0009] The bonding pad is located in the second non-display area, and the second end of the first signal line is connected to the bonding pad and the ground terminal in a time-division manner through the second control unit;

[0010] The display panel includes a first operating phase, in which a first switching unit is turned on, and both the first and second ends of the first signal line are electrically connected to the ground terminal.

[0011] Secondly, based on the same inventive concept, the present invention provides a driving method for a display panel, applied to the display panel provided in the first aspect. The driving method includes a first working stage, in which a first switching unit is turned on, a first end of a first signal line is connected to a ground terminal through a first control unit, and a second end of the first signal line is connected to a ground terminal through a second control unit.

[0012] Thirdly, based on the same inventive concept, the present invention also provides a display device, including the display panel provided in the first aspect of the present invention.

[0013] Compared with the prior art, the display panel, driving method, and display device provided by the present invention achieve at least the following beneficial effects:

[0014] In the display panel and display device provided in this embodiment of the invention, a plurality of first signal lines extending along a first direction and arranged along a second direction are provided in the display area; a plurality of first switch units are provided in the first non-display area, the first end of the first switch unit is connected to a common voltage terminal and a ground terminal through a first control unit, and the second end is connected to the first end of the first signal line; the second end of the first signal line is connected to the bonding pad and the ground terminal in the second non-display area through a second control unit in a time-division manner. The display panel includes a first working stage, which can be regarded as an electrostatic discharge stage. In the first working stage, the first switch unit is turned on, the first end of the first signal line is connected to the ground terminal through the first control unit, and the second end of the first signal line is also connected to the ground terminal through the second control unit, thereby grounding the first end and the second end of the first signal line simultaneously, forming a grid-like grounding structure on the display panel. When there is static electricity in the display panel, the static electricity can be quickly released through the first signal lines, which is conducive to the rapid dissipation of static electricity, effectively improving the anti-static capability of the display product, avoiding the impact of static electricity on the display effect, and thus improving the display reliability of the display product.

[0015] Of course, any product implementing this invention need not necessarily achieve all of the technical effects described above at the same time.

[0016] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0018] Figure 1 The diagram shown is a structural schematic of a display panel provided in an embodiment of the present invention;

[0019] Figure 2 The diagram shows one possible connection between the first signal line and the first and second control units.

[0020] Figure 3 The diagram shows another connection between the first signal line and the first and second control units;

[0021] Figure 4 The diagram shows another connection between the first signal line and the first and second control units;

[0022] Figure 5 The diagram shows another connection between the first signal line and the first and second control units;

[0023] Figure 6 The diagram shows another connection between the first signal line and the first and second control units;

[0024] Figure 7 The diagram shows another connection between the first signal line and the first and second control units;

[0025] Figure 8 The diagram shown is a schematic representation of the arrangement of touch signal lines and dummy signal lines in a display panel provided in an embodiment of the present invention.

[0026] Figure 9 The diagram shows a connection between a pixel electrode and a touch signal line.

[0027] Figure 10 The diagram shows a connection schematic between the touch signal line and the multiplexing unit;

[0028] Figure 11 The diagram shown is a flowchart of a display panel driving method provided in an embodiment of the present invention;

[0029] Figure 12 The diagram shown is a structural schematic of a display device provided in an embodiment of the present invention. Detailed Implementation

[0030] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0031] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0032] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0033] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0034] Various modifications and variations can be made to this invention without departing from its spirit or scope, as will be apparent to those skilled in the art. Therefore, this invention is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in this invention can be combined with each other without contradiction.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0036] Figure 1 The diagram shown is a structural schematic of a display panel provided in an embodiment of the present invention. Figure 2 The diagram shown illustrates one possible connection between the first signal line and the first and second control units. Please refer to it. Figure 1 and Figure 2 The present invention provides a display panel including a display area AA and a non-display area NA that at least partially surrounds the display area AA. The non-display area NA includes a first non-display area NA1 and a second non-display area NA2 located on both sides of the display area AA along a first direction D1.

[0037] The display panel 100 includes: a plurality of first signal lines X1 extending along a first direction D1 and arranged along a second direction D2, the first signal lines X1 being located in the display area AA, and the first direction D1 and the second direction D2 intersecting.

[0038] Multiple first switch units K1 are located in the first non-display area NA1. The first end of the first switch unit K1 is connected to the common voltage terminal VCOM and the ground terminal GND through the first control unit 10 time-sharing. The second end of the first switch unit K1 is electrically connected to the first end of the first signal line X1.

[0039] The bonding pad P is located in the second non-display area NA2. The second end of the first signal line X1 is connected to the bonding pad P and the ground terminal GND through the second control unit 20 time-division.

[0040] The display panel includes a first working phase, in which the first switching unit K1 is turned on, and the first and second ends of the first signal line X1 are both electrically connected to the ground terminal GND.

[0041] It should be noted that, Figure 1 The illustration uses a rounded rectangular display panel as an example, but does not limit the actual shape of the display panel. In some other embodiments of the present invention, the display panel may also be circular, rectangular or other structures. Figure 1 and Figure 2 The first signal line X1 shown is for illustrative purposes only and does not limit the actual number of first signal lines X1 contained in the display panel.

[0042] Please combine Figure 1 and Figure 2 In the display panel provided in this embodiment of the invention, a plurality of first signal lines X1 extending along a first direction D1 and arranged along a second direction D2 are provided in the display area AA; a plurality of first switch units K1 are provided in the first non-display area NA1. The first end of the first switch unit K1 is connected to the common voltage terminal VCOM and the ground terminal GND through the first control unit 10, and the second end is connected to the first end of the first signal line X1. That is, under the control of the first control unit 10, the first end of the first signal line X1 can be selectively connected to the common voltage terminal VCOM or selectively connected to the ground terminal GND. The second end of the first signal line X1 is connected to the bonding pad P in the second non-display area NA2 and the ground terminal GND through the second control unit 20. When the second end of the first signal line X1 is connected to the bonding pad P, signal transmission can be performed between the first signal line X1 and the bonding pad P; when the second end of the first signal line X1 is connected to the ground terminal GND, the first signal line X1 can be grounded.

[0043] The display panel includes a first working stage, which can be considered as an electrostatic discharge stage. In the first working stage, the first switching unit K1 is turned on, and the first end of the first signal line X1 is connected to the ground terminal GND through the first control unit 10. The second end of the first signal line X1 is also connected to the ground terminal GND through the second control unit 20, thereby grounding the first end and the second end of the first signal line X1 simultaneously, forming a grid-like grounding structure on the display panel. When there is static electricity in the display panel, the static electricity can be quickly released through the first signal line X1, which is conducive to the rapid dissipation of static electricity, effectively improving the anti-static capability of the display product, avoiding the impact of static electricity on the display effect, and thus improving the display reliability of the display product.

[0044] Figure 3The diagram shows another connection between the first signal line X1 and the first control unit 10 and the second control unit 20. In this embodiment, the structure of the first control unit 10 has been refined.

[0045] Please refer to Figure 3 In an optional embodiment of the present invention, the first control unit 10 includes a first transistor T1 and a second transistor T2. The first terminals of the first transistor T1 and the second transistor T2 are both electrically connected to the first terminal of the first switching unit K1. The second terminal of the first transistor T1 is electrically connected to the common voltage terminal VCOM, and the second terminal of the second transistor T2 is electrically connected to the ground terminal GND.

[0046] Specifically, in this embodiment of the invention, the first control unit 10 includes a first transistor T1 and a second transistor T2. The first transistor T1 and the second transistor T2 are time-divisionally turned on. When both the first transistor T1 and the first switching unit K1 are on, the first signal line X1 can be connected to the common voltage terminal VCOM of the display panel through the first switching unit K1 and the first transistor T1. When both the second transistor T2 and the first switching unit K1 are on, the first signal line X1 can be connected to the ground terminal GND of the display panel through the first switching unit K1 and the second transistor T2. This achieves time-division control of the signal transmitted by the first signal line X1. In actual manufacturing, the first transistor T1 and the second transistor T2 in the first control unit 10 can be manufactured simultaneously with other transistors in the display panel, thus eliminating the need to introduce new manufacturing processes for the first control unit 10. This simplifies the overall manufacturing process of the display panel and improves its production efficiency.

[0047] Continue to refer to Figure 3 In one optional embodiment of the present invention, one of the first transistor T1 and the second transistor T2 is a P-type transistor and the other is an N-type transistor, and the control terminal of the first transistor T1 and the control terminal of the second transistor T2 are connected to the same control signal terminal.

[0048] Figure 3The illustrated embodiment uses a P-type transistor T1 and an N-type transistor T2 as examples. In some other embodiments of the present invention, the first transistor T1 may also be an N-type transistor and the second transistor T2 may be a P-type transistor. The control terminal of the P-type transistor is turned on when it receives a low-level signal and turned off when it receives a high-level signal; the control terminal of the N-type transistor is turned on when it receives a high-level signal and turned off when it receives a low-level signal. Since the first transistor T1 and the second transistor T2 in the first control unit 10 are time-division multiplexed, when the first transistor T1 and the second transistor T2 in the first control unit 10 are respectively set as two different types of transistors, the control terminals of the first transistor T1 and the second transistor T2 can be connected to the same control signal terminal. When the control terminal provides a high-level signal or a low-level signal, one of the first transistor T1 and the second transistor T2 is turned on and the other is turned off. This is equivalent to controlling the on or off of the first transistor T1 and the second transistor T2 simultaneously through a single control signal terminal, which helps to reduce the number of control signal terminals actually included in the display panel, thereby helping to reduce the number of signal terminals included in the control chip and saving production costs.

[0049] Figure 4 and Figure 5 The diagrams shown are another connection diagrams between the first signal line X1 and the first control unit 10 and the second control unit 20. In this embodiment, the structure of the first control unit 10 is further refined.

[0050] Please refer to Figure 4 and Figure 5 In one optional embodiment of the present invention, the first transistor T1 and the second transistor T2 are both P-type transistors, or the first transistor T1 and the second transistor T2 are both N-type transistors, and the control terminal of the first transistor T1 and the control terminal of the second transistor T2 are respectively connected to different control signal terminals.

[0051] In this embodiment, the first transistor T1 and the second transistor T2 in the first control unit 10 are taken as examples of transistors of the same type. Specifically, Figure 4 This explanation will be based on the example where both the first transistor T1 and the second transistor T2 are P-type transistors. Figure 5 Taking an example where both transistor T1 and transistor T2 are N-type transistors, the following explanation is provided. When both transistors T1 and T2 are P-type transistors, both transistors T1 and T2 are turned on at a low level and turned off at a high level. When both transistors T1 and T2 are N-type transistors, both transistors T1 and T2 are turned on at a high level and turned off at a low level.

[0052] When the first transistor T1 and the second transistor T2 in the first control unit 10 are of the same type, the control terminals of the first transistor T1 and the second transistor T2 can be connected to different control signal terminals respectively. In the first operating phase, under the control of their respective connected control signal terminals, the second transistor T2 is turned on, the first transistor T1 is turned off, and the first signal line X1 is connected to the ground terminal GND through the first switching unit K1 and the second transistor T2. The method of using different control terminals to control the first transistor T1 and the second transistor T2 makes the control of the turn-on and turn-off of the first transistor T1 and the second transistor T2 more reliable.

[0053] Figure 6 The diagram shows another connection between the first signal line X1 and the first control unit 10 and the second control unit 20. In this embodiment, the structure of the second control unit 20 has been refined.

[0054] Please refer to Figure 6 In an optional embodiment of the present invention, the second control unit 20 includes a plurality of third transistors T3 and a fourth transistor T4. The first terminal of each third transistor T3 is electrically connected to the second terminal of the first signal line X1. The second terminal of each third transistor T3 is connected to the first terminal of the fourth transistor T4. The second terminal of the fourth transistor T4 is connected to the ground terminal GND.

[0055] Specifically, the second control unit 20 includes multiple third transistors T3 and one fourth transistor T4, each corresponding to the first signal line X1. The first terminal of each third transistor T3 is electrically connected to the second terminal of the first signal line X1, and the second terminal of each third transistor T3 is connected to the first terminal of the fourth transistor T4. The second terminal of the fourth transistor T4 is connected to the ground terminal GND. The second terminal of the first signal line X1 is also electrically connected to the bonding pad P. When the first signal line X1 needs to interact with the bonding pad P, both the third transistors T3 and T4 are turned off. In the first operating phase, both the third transistors T3 and T4 are turned on, and the second terminal of the first signal line X1 is connected to the ground terminal GND through the third transistors T3 and T4. When both the first and second terminals of the first signal line X1 are connected to the ground terminal GND, a grid-like grounding structure is formed on the display panel. Static electricity in the display panel can be quickly conducted to the ground terminal GND, effectively preventing the impact of static electricity on the display effect.

[0056] Continue to refer to Figure 6 and combined Figure 7 ,in, Figure 7The diagram shows another connection between the first signal line X1 and the first control unit 10 and the second control unit 20. In this embodiment, the structure of the second control unit 20 has been refined.

[0057] Please refer to Figure 6 and Figure 7 In an optional embodiment of the present invention, each of the third transistors T3 is either a P-type transistor or an N-type transistor, and the control terminal of each of the third transistors T3 is connected to the same control signal terminal.

[0058] Figure 6 The illustrated embodiment uses the example where all third transistors T3 are P-type transistors. Figure 7 The illustrated embodiment uses N-type transistors as an example to illustrate this. Since the third transistors T3 are simultaneously turned on and off, when all the third transistors T3 are set to the same type, the control terminals of all the third transistors T3 can be connected to the same control signal terminal. This eliminates the need to set different control signal terminals for different third transistors T3, thus significantly reducing the actual number of control signal terminals in the display panel. This simplifies the display panel wiring and manufacturing process, and improves the manufacturing efficiency of the display panel.

[0059] In the actual manufacturing process, the third transistor T3 and the fourth transistor T4 in the second control unit 20 can be manufactured simultaneously with other transistors in the display panel without the need to introduce new manufacturing processes, thus simplifying the manufacturing process of the display panel.

[0060] Optionally, the fourth transistor T4 in this embodiment of the invention can be either a P-type transistor or an N-type transistor; the invention does not specifically limit this. Of course, the fourth transistor T4 can also be set to the same type as the third transistor T3, thereby allowing the third transistor T3 and the fourth transistor T4 to be formed simultaneously in the same process, further simplifying the manufacturing process of the display panel. When the fourth transistor T4 and the third transistor T3 are of the same type, the control terminals of the fourth transistor T4 and the third transistor T3 can be connected to the same control signal terminal, which helps to further reduce the number of control signal terminals actually included in the display panel.

[0061] Optionally, the types of the first transistor T1, the second transistor T2, the third transistor T3, the fourth transistor T4, and the transistors in the first switching unit K1 can all be selected to be the same.

[0062] Figure 8 The diagram shown is a schematic representation of the arrangement of touch signal line L0 and dummy signal line L1 in a display panel provided in an embodiment of the present invention. Please refer to the diagram. Figure 2 and Figure 8In an optional embodiment of the present invention, the display panel includes a plurality of touch signal lines L0 extending along a first direction D1 and arranged along a second direction D2 and a plurality of dummy signal lines L1. The display panel also includes a touch electrode T0. The touch signal lines L0 are electrically connected to the touch electrode T0, and the dummy signal lines L1 are insulated from the touch electrode T0. The first signal line X1 is the dummy signal line L1.

[0063] Specifically, in the actual fabrication of the touch signal line L0, in addition to forming the touch signal line L0, a dummy signal line L1 is also formed on the film layer where the touch signal line L0 is located. Retaining the dummy signal line L1 makes the wiring of the film layer where the touch signal line L0 is located more uniform and eliminates the need to remove the dummy signal line L1, thus simplifying the entire manufacturing process of the display panel. The touch signal line L0 is electrically connected to the touch electrode T0 for transmitting touch signals, while the dummy signal line L1 is not electrically connected to the touch electrode T0. In this embodiment, the first signal line X1 used for conducting static electricity is the dummy signal line L1. In the first working stage, the first and second ends of the dummy signal line L1 can be connected to the ground terminal GND through the first control unit 10 and the second control unit 20, respectively. The dummy signal line L1 forms a grid-like grounding structure, allowing static electricity in the display panel to be quickly released through the dummy signal line L1, eliminating the need to introduce a static electricity conduction circuit structure into the display panel and effectively improving the anti-static performance of the display panel. When the dummy signal line L1 is used as the first signal line X1, the connection relationship between the dummy signal line L1 and the first control unit 10, the second control unit 20, and the ground terminal GND can be referred to Figure 1 and Figure 2 .

[0064] Figure 9 The diagram shown illustrates one possible connection between the pixel electrode and the touch signal line L0. Please refer to it. Figure 9 In an optional embodiment of the present invention, the display panel includes a plurality of first electrodes T1 arranged in an array and a plurality of touch signal lines L0 extending along a first direction D1 and arranged along a second direction D2, wherein the touch signal lines L0 are electrically connected to the first electrodes T1; the display panel also includes a display stage and a touch stage, wherein in the display stage, the first switching unit K1 is turned on and the first electrode serves as a common electrode; in the touch stage, the first switching unit K1 is turned off and the first electrode serves as a touch electrode T0.

[0065] This invention illustrates a scheme where the touch electrode T0 is reused as a common electrode. During the touch phase, the touch electrode T0 functions as a touch sensor, and the touch signal line L0 is disconnected from the common voltage signal terminal but electrically connected to the bonding pad P. During the display phase, the touch electrode T0 is reused as the common electrode, and the touch signal line L0 is reused as the common voltage signal line. The common electrode is electrically connected to the common voltage signal terminal through the common voltage signal line, allowing the common electrode to receive the common voltage signal. Thus, it is unnecessary to separately set the touch electrode and the common electrode in the display panel, effectively simplifying the film structure of the display panel.

[0066] Continue to refer to Figure 9 In an optional embodiment of the present invention, the first signal line X1 is a touch signal line L0. When the touch signal line L0 is used as the first signal line X1, the touch signal line L0 operates in a time-division multiplexing manner. During the touch phase, the first switch unit K1 connected to the first end of the touch signal line L0 is disconnected, the second end is electrically connected to the bonding pad P, and the third transistor T3 in the second control unit 20 is disconnected. Optionally, the bonding pad P is used to bond with the control chip or flexible circuit board. When the touch signal line L0 is electrically connected to the bonding pad P, the touch signal line L0 is used to transmit touch signals. In the first operating phase, the first switch unit K1 is turned on, and the first end of the touch signal line L0 is connected to the ground terminal GND through the first switch unit K1 and the second transistor T2 in the first control unit 10. The third transistor T3 and the fourth transistor T4 in the second control unit 20 are turned on, and the first end of the touch signal line L0 is connected to the ground terminal GND through the third transistor T3 and the fourth transistor T4. This achieves a grid-like grounding structure for the touch signal line L0. When there is static electricity in the display panel, it can be quickly discharged through the aforementioned grid-like grounding structure, preventing the static electricity from affecting the normal display of the display panel and thus improving the anti-static performance of the display panel. In addition, since this embodiment uses the touch signal line L0 as the first signal line X1 for conducting static electricity, there is no need to introduce other signal lines for conducting static electricity in the display panel, which also simplifies the display panel structure.

[0067] It should be noted that, Figure 9 The illustrated embodiment uses the touch signal lines L0 connected to the four touch electrodes T0 in the display panel as an example for illustration. In reality, the display panel contains more than four touch electrodes T0. The connection relationships between other touch electrodes T0 and touch signal lines L0 and the first control unit 10 and the second control unit 20 can be referred to the example. Figure 9 The present invention will not be described in detail here.

[0068] Figure 10 The diagram shown illustrates one possible connection between the touch signal line L0 and the multiplexing unit 30. Please refer to the diagram. Figure 10In an optional embodiment of the present invention, the display panel includes a plurality of first electrodes T1 arranged in an array and a plurality of touch signal line groups LZ. The touch signal line group LZ includes X touch signal lines L0, where X ≥ 2 and is an integer. The touch signal lines L0 extend along a first direction D1 and are arranged along a second direction D2. The touch signal lines L0 are electrically connected to the first electrodes T1.

[0069] The display panel also includes a multiplexing unit 30 located in the second non-display area NA2. The multiplexing unit 30 includes X switching elements K0. Each switching element K0 includes a control terminal, an input terminal, and an output terminal. The input terminals of the X switching elements K0 in the same multiplexing unit 30 are connected and electrically connected to the same bonding pad P. The output terminals of the X switching elements K0 in the same multiplexing unit 30 are connected one-to-one with the X touch signal lines L0 of the same touch signal line group LZ. The display panel also includes X switch control lines CK (in this embodiment, the switch control lines CK include a first switch control line CK1 and a second switch control line CK2 as an example). The control terminals of the X switching elements K0 in the multiplexing unit 30 are connected one-to-one with the X switch control lines.

[0070] The first signal line X1 includes a touch signal line L0, and the second end of the first signal line X1 is connected to the second control unit 20 through a multiplexing unit 30.

[0071] Specifically, when the display panel includes a large number of touch signal lines L0, this embodiment illustrates a scheme of introducing a multiplexing unit 30 for the touch signal lines L0. In the same multiplexing unit 30, the input terminals of X switching elements K0 are electrically connected to the same bonding pad P, and the output terminals of the X switching elements K0 are electrically connected to X touch signal lines L0. That is, X touch signal lines L0 correspond to the same bonding pad P. During the touch phase, the switching elements K0 in the same multiplexing unit 30 can be turned on in a time-division manner to realize the time-division transmission of touch signals on the touch signal lines L0 in the same touch signal line group LZ. Introducing a multiplexing unit 30 for the touch signal lines L0 greatly reduces the number of bonding pads P corresponding to the touch signal lines L0, which in turn helps to reduce the number of conductive terminals on the flexible circuit board or control chip bonded to the bonding pad P, thus helping to reduce the production cost of the flexible circuit board or control chip. In addition, the introduction of the multi-way distribution unit 30 helps to reduce the number of fan-out lines in the lower bezel area of ​​the display panel, thereby reducing the width of the lower bezel of the display panel and realizing a narrow bezel design for the display panel.

[0072] When the first signal line X1 includes the touch signal line L0, the second end of the touch signal line L0 is connected to the second control unit 20 through the multiplexing unit 30. In the first working stage, when one of the switching elements K0 in the multiplexing unit 30 is turned on, and the corresponding third transistor T3 and fourth transistor T4 are turned on, the touch signal line L0 connected to the switching element K0 can be connected to the ground terminal GND. This allows static electricity to be discharged through this part of the touch signal line L0, which also helps to improve the anti-static capability of the display panel.

[0073] It should be noted that this embodiment is only illustrated with X=2 as an example, but the actual quantity of X is not limited. In some other embodiments of the present invention, X may also be 3 or greater than 3.

[0074] It should also be noted that the first working stage mentioned in the embodiments of the present invention is a stage that does not overlap with the display stage and the touch stage of the display panel. In other words, the first working stage is a working stage that is independent of the display stage and the touch stage and does not affect the normal operation of the display stage and the touch stage.

[0075] Continue to refer to Figure 10 In an optional embodiment of the present invention, the second control unit 20 includes a plurality of third transistors T3 and a fourth transistor T4. The first terminal of the third transistors T3 is electrically connected to the input terminal of the switching element in the multiplexing unit 30, and the second terminal of each third transistor T3 is connected to the first terminal of the fourth transistor T4. The second terminal of the fourth transistor T4 is connected to the ground terminal GND.

[0076] Specifically, this embodiment illustrates the specific connection method between the multiplexing unit 30 and the second control unit 20 when the display panel further includes a multiplexing unit 30. When the touch signal line L0 is used as the first signal line X1, since the second end of the touch signal line L0 is electrically connected to the bonding pad P through the multiplexing unit 30, when the second control unit 20 is set on this basis, the first end of the third transistor T3 in the second control unit 20 is connected to the input end of the multiplexing unit 30. When the switching element in the multiplexing unit 30 is turned on, and the third transistor T3 and the fourth transistor T4 are turned on, the touch signal line L0 can be electrically connected to the ground terminal GND through the multiplexing unit 30, the third transistor T3 and the fourth transistor T4, thereby enabling the static electricity to be quickly discharged, which is also beneficial to improving the anti-static performance of the display panel.

[0077] Based on the same inventive concept, the present invention also provides a method for driving a display panel. Figure 11 The diagram shown is a flowchart of a display panel driving method provided in an embodiment of the present invention. The driving method includes a first working stage. Please refer to... Figure 1 , Figure 2 and Figure 11 In the first working stage, the first switch unit K1 is turned on, the first end of the first signal line X1 is connected to the ground terminal GND through the first control unit 10, and the second end of the first signal line X1 is connected to the ground terminal GND through the second control unit 20.

[0078] The driving method for the display panel provided in this embodiment of the invention introduces a first working stage. In the first working stage, the first end and the second end of the first signal line X1 are connected to the ground terminal GND through the first control unit 10 and the second control unit 20, respectively, forming a grid-like grounding structure in the display panel. When there is static electricity in the display panel, the static electricity can be quickly discharged through the grid-like grounding structure, thereby improving the overall anti-static performance of the display panel.

[0079] Please combine Figure 11 and Figure 10 In an optional embodiment of the present invention, the display panel includes a plurality of first electrodes T0 arranged in an array and a plurality of touch signal lines L0 extending along a first direction D1 and arranged along a second direction D2. The touch signal lines L0 are electrically connected to the first electrodes T0, and the first signal line X1 is the touch signal line L0.

[0080] The driving method also includes a display phase and a touch phase, wherein the first working phase does not overlap with the display phase and the touch phase;

[0081] During the display phase, the first switch unit K1 is turned on, the second control unit 20 is turned off, the first end of the first signal line X1 is connected to the common voltage terminal VCOM through the first control unit 10, and the second end of the first signal line X1 is electrically connected to the bonding pad P.

[0082] During the touch control phase, the first switch unit K1 is turned off, the second control unit 20 is turned off, and the first signal line X1 is electrically connected to the bonding pad P.

[0083] It should be noted that, Figure 11In the flowchart shown, the order of the display stage, touch stage, and first working stage is for illustrative purposes only and does not limit the specific execution order of the display stage, touch stage, and first working stage of the display panel. This embodiment uses the first signal line X1 as an example of the touch signal line L0. The touch electrode T0 connected to the touch signal line L0 can also be reused as a common electrode. During the display stage, the first switching unit K1 is turned on, and the common electrode is connected to the common voltage terminal VCOM through the first switching unit K1. The signal on the common electrode is a common voltage signal. During the touch stage, both the first switching unit K1 and the second control unit 20 are turned off. The first signal line X1 is electrically connected to the bonding pad P for transmitting touch signals. During the first working stage, the second transistor T2 in the first control unit 10 is turned on, and the third transistor T3 and the fourth transistor T4 in the second control unit 20 are turned on. The first and second ends of the first signal line X1 are respectively connected to the ground terminal GND, forming a grid-like grounding structure, which facilitates the rapid discharge of static electricity from the display panel, thereby improving the anti-static performance of the display panel.

[0084] Based on the same inventive concept, the present invention also provides a display device. Figure 12 The diagram shown is a structural schematic of a display device provided in an embodiment of the present invention. The display device 200 includes the display panel 100 in any of the above embodiments.

[0085] The display device 200 provided in this embodiment of the invention can be any electronic device with display function, such as a touch screen, mobile phone, tablet computer, laptop computer, e-reader, or television. The display device 200 provided in this embodiment of the invention has the beneficial effects of the display panel 100 provided in this embodiment of the invention. For details, please refer to the specific descriptions of the display panel 100 in the above embodiments; these descriptions will not be repeated here.

[0086] Understandable, Figure 12 The shape of the display device 200 is illustrated using only a rounded rectangle structure as an example. In some other embodiments of the present invention, the display device 200 may also be embodied as a rectangle, a circle, an ellipse or any other feasible shape. The present invention does not specifically limit this.

[0087] As can be seen from the above embodiments, the display panel, driving method, and display device provided by the present invention achieve at least the following beneficial effects:

[0088] In the display panel and display device provided in this embodiment of the invention, a plurality of first signal lines extending along a first direction and arranged along a second direction are provided in the display area; a plurality of first switch units are provided in the first non-display area, the first end of the first switch unit is connected to a common voltage terminal and a ground terminal through a first control unit, and the second end is connected to the first end of the first signal line; the second end of the first signal line is connected to the bonding pad and the ground terminal in the second non-display area through a second control unit in a time-division manner. The display panel includes a first working stage, which can be regarded as an electrostatic discharge stage. In the first working stage, the first switch unit is turned on, the first end of the first signal line is connected to the ground terminal through the first control unit, and the second end of the first signal line is also connected to the ground terminal through the second control unit, thereby grounding the first end and the second end of the first signal line simultaneously, forming a grid-like grounding structure on the display panel. When there is static electricity in the display panel, the static electricity can be quickly released through the first signal lines, which is conducive to the rapid dissipation of static electricity, effectively improving the anti-static capability of the display product, avoiding the impact of static electricity on the display effect, and thus improving the display reliability of the display product.

[0089] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A display panel, characterized in that, It includes a display area and a non-display area that at least partially surrounds the display area, the non-display area including a first non-display area and a second non-display area located on both sides of the display area along a first direction; The display panel includes: Multiple first signal lines extending along the first direction and arranged along the second direction, the first signal lines being located in the display area, the first direction and the second direction intersecting; Multiple first switch units are located in the first non-display area. The first end of the first switch unit is connected to a common voltage terminal and a ground terminal in a time-division manner through a first control unit. The second end of the first switch unit is electrically connected to the first end of the first signal line. A bonding pad is located in the second non-display area, and the second end of the first signal line is connected to the bonding pad and the ground terminal in a time-division manner through the second control unit; The display panel includes a first operating phase, in which the first switching unit is turned on, and the first end and the second end of the first signal line are both electrically connected to the grounding terminal.

2. The display panel according to claim 1, characterized in that, The first control unit includes a first transistor and a second transistor. The first terminals of the first transistor and the second transistor are both electrically connected to the first terminal of the first switching unit. The second terminal of the first transistor is electrically connected to the common voltage terminal, and the second terminal of the second transistor is electrically connected to the ground terminal.

3. The display panel according to claim 2, characterized in that, One of the first transistor and the second transistor is a P-type transistor and the other is an N-type transistor. The control terminals of the first transistor and the second transistor are connected to the same control signal terminal.

4. The display panel according to claim 2, characterized in that, Both the first transistor and the second transistor are P-type transistors, or both the first transistor and the second transistor are N-type transistors, and the control terminals of the first transistor and the second transistor are respectively connected to different control signal terminals.

5. The display panel according to claim 1, characterized in that, The second control unit includes a plurality of third transistors and a fourth transistor. The first terminal of each third transistor is electrically connected to the second terminal of the first signal line. The second terminal of each third transistor is connected to the first terminal of the fourth transistor. The second terminal of the fourth transistor is connected to the ground terminal.

6. The display panel according to claim 5, characterized in that, Each of the third transistors is either a P-type transistor or an N-type transistor, and the control terminal of each of the third transistors is connected to the same control signal terminal.

7. The display panel according to claim 1, characterized in that, The display panel includes multiple touch signal lines and dummy signal lines extending along the first direction and arranged along the second direction. The display panel also includes touch electrodes. The touch signal lines are electrically connected to the touch electrodes, and the dummy signal lines are insulated from the touch electrodes. The first signal line is the dummy signal line.

8. The display panel according to claim 1, characterized in that, The display panel includes a plurality of first electrodes arranged in an array and a plurality of touch signal lines extending along the first direction and arranged along the second direction, wherein the touch signal lines are electrically connected to the first electrodes; The display panel further includes a display phase and a touch phase. In the display phase, the first switching unit is turned on, and the first electrode serves as a common electrode. During the touch control phase, the first switch unit is turned off, and the first electrode serves as the touch electrode.

9. The display panel according to claim 8, characterized in that, The first signal line is the touch signal line.

10. The display panel according to claim 1, characterized in that, The display panel includes a plurality of first electrodes arranged in an array and a plurality of touch signal line groups. Each touch signal line group includes X touch signal lines, where X ≥ 2 and is an integer. The touch signal lines extend along the first direction and are arranged along the second direction, and are electrically connected to the first electrodes. The display panel further includes a multiplexing unit located in the second non-display area. The multiplexing unit includes X switching elements, each with a control terminal, an input terminal, and an output terminal. The input terminals of the X switching elements in the same multiplexing unit are connected and electrically connected to the same bonding pad. The output terminals of the X switching elements in the same multiplexing unit are connected one-to-one with X touch signal lines in the same touch signal line group. The display panel also includes X switch control lines, and the control terminals of the X switching elements in the multiplexing unit are connected one-to-one with the X switch control lines. The first signal line includes the touch signal line, and the second end of the first signal line is connected to the second control unit through the multiplexing unit.

11. The display panel according to claim 10, characterized in that, The second control unit includes a plurality of third transistors and a fourth transistor. The first terminal of each third transistor is electrically connected to the input terminal of the switching element in the multiplexing unit. The second terminal of each third transistor is connected to the first terminal of the fourth transistor. The second terminal of the fourth transistor is connected to the ground terminal.

12. A driving method for a display panel as described in any one of claims 1 to 11, characterized in that, The driving method includes a first operating phase, in which the first switching unit is turned on, the first end of the first signal line is connected to the ground terminal through the first control unit, and the second end of the first signal line is connected to the ground terminal through the second control unit.

13. The driving method for a display panel according to claim 12, characterized in that, The display panel includes a plurality of first electrodes arranged in an array and a plurality of touch signal lines extending along the first direction and arranged along the second direction. The touch signal lines are electrically connected to the first electrodes, and the first signal lines are touch signal lines. The driving method further includes a display stage and a touch stage, wherein the first working stage does not overlap with the display stage and the touch stage; During the display phase, the first switch unit is turned on, the second control unit is turned off, the first end of the first signal line is connected to the common voltage terminal through the first control unit, and the second end of the first signal line is electrically connected to the bonding pad. During the touch control phase, the first switch unit is turned off, the second control unit is turned off, and the first signal line is electrically connected to the bonding pad.

14. A display device, characterized in that, Includes the display panel described in any one of claims 1 to 11.

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