Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device. According to the display panel, voltage stabilizing transistors are arranged, each voltage stabilizing transistor is connected with one induction electrode, the grid electrode of each voltage stabilizing transistor is connected with a voltage stabilizing control line, the first electrode of each voltage stabilizing transistor is connected with the corresponding induction electrode, and the second electrode of each voltage stabilizing transistor is connected with a voltage stabilizing driving line; one control signal line inputs an effective level, the other control signal lines input an ineffective level, one voltage stabilization control signal line inputs an ineffective level, the other voltage stabilization control signal lines input an effective level, and the voltage stabilization driving line is configured to output a voltage stabilization signal. A voltage stabilizing signal can be input into the induction electrode, so that the signal on the induction electrode is stable, the induction electrode is prevented from being impacted by other signals or influencing other signals when being suspended, mistaken touch and poor display are prevented, and the touch stability is improved.

Description

[0001] This divisional application is a divisional application of Chinese patent application No. 202411384243.X, filed on September 29, 2024, entitled "Display Panel and Display Device". Technical Field

[0002] This application relates to the field of display technology, and in particular to a display panel and display device. Background Technology

[0003] To achieve touch functionality, current display devices integrate the display driver and touch driver onto the display panel. To reduce cost and device thickness, common electrode blocks in the common electrode layer are reused as sensing electrodes. As display devices evolve towards larger sizes, narrower bezels, and higher screen-to-body ratios, maintaining touch accuracy requires more touch traces. Each touch trace requires a corresponding channel output signal from a driver chip, but the number of channels for a single driver signal is limited, necessitating more driver chips, leading to higher costs and larger bezels. To address these issues, current display devices use a single sensing signal line to control two sensing electrodes within the surface, reducing touch traces without sacrificing touch accuracy. However, this approach has the following problems: when one sensing electrode receives no signal, it is passive, lacking any DC or AC voltage for signal transmission. This makes it susceptible to interference from other signals, leading to false touches, and can also affect other signals, causing display defects.

[0004] Therefore, existing display panels that use time-division driving sensing electrodes have a technical problem of poor touch stability. Summary of the Invention

[0005] This application provides a display panel and a display device to solve the technical problem of poor touch stability in existing display panels that use time-division driving sensing electrodes.

[0006] This application provides a display panel including a plurality of sensing electrodes and a plurality of sensing signal lines arranged in an array. Each sensing signal line is electrically connected to at least two sensing electrodes. A control transistor and a Zener transistor are disposed between each sensing electrode and the corresponding sensing signal line. The gate of the control transistor is connected to the control signal line. The first electrode of the control transistor is connected to the sensing electrode. The second electrode of the control transistor is connected to the sensing signal line. The gate of the Zener transistor is connected to the Zener control line. The first electrode of the Zener transistor is connected to the sensing electrode. The second electrode of the Zener transistor is connected to the Zener drive line. In this configuration, the gates of multiple control transistors connected to multiple sensing electrodes in the same row are connected to the same control signal line, while the gates of multiple control transistors connected to multiple sensing electrodes in different rows are connected to different control signal lines. The second electrodes of multiple control transistors connected to multiple sensing electrodes in the same row are connected to different sensing signal lines. The gates of multiple Zener transistors connected to multiple sensing electrodes in the same row are connected to the same Zener control line, while the gates of multiple Zener transistors connected to multiple sensing electrodes in different rows are connected to different Zener control lines. The second electrode of each Zener transistor is connected to the Zener drive line. The sensing electrode is configured to input a common signal during the display phase and a sensing signal during the touch phase. When the display panel is configured for the touch phase, one of the control signal lines inputs an active level, while the other control signal lines input an inactive level. One of the voltage regulation control lines inputs an inactive level, while the other voltage regulation control lines input an active level. The sensing electrode connected to the control transistor of the control signal line with the active level input is the same as the sensing electrode connected to the voltage regulation transistor of the voltage regulation control line with the inactive level input. The voltage regulation drive line is configured to output a regulated signal.

[0007] Meanwhile, this application provides a display device, which includes a display panel as described in any of the above embodiments.

[0008] Beneficial Effects: This application provides a display panel and a display device. The display panel is configured with voltage regulator transistors, each of which is connected to a sensing electrode. The gate of the voltage regulator transistor is connected to a voltage regulation control line, the first electrode of the voltage regulator transistor is connected to the sensing electrode, and the second electrode of the voltage regulator transistor is connected to a voltage regulation drive line. When the display panel is configured for touch operation, one control signal line inputs an active level, while other control signal lines input an inactive level; one voltage regulation control signal line inputs an inactive level, while other voltage regulation control signal lines input an active level; and the voltage regulation drive line is configured to output a voltage regulation signal. This allows the sensing electrode to input a voltage regulation signal even when no sensing signal is input, thus stabilizing the signal on the sensing electrode, preventing the sensing electrode from being affected by other signals while floating, preventing accidental touches, preventing display defects, and improving touch stability. Attached Figure Description

[0009] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0010] Figure 1 This is a schematic diagram of a comparison display device provided in an embodiment of this application.

[0011] Figure 2 Timing diagram of a comparative display device provided in an embodiment of this application.

[0012] Figure 3 This is a first schematic diagram of a display panel provided in an embodiment of this application.

[0013] Figure 4 The display panel provided in the embodiments of this application is configured as a first timing diagram of the touch phase.

[0014] Figure 5 This is a second schematic diagram of a display panel provided in an embodiment of this application.

[0015] Figure 6 This is a third schematic diagram of a display panel provided in an embodiment of this application.

[0016] Figure 7 This is a fourth schematic diagram of a display panel provided in an embodiment of this application.

[0017] Figure 8 This is a fifth schematic diagram of a display panel provided in an embodiment of this application.

[0018] Figure 9 This is a sixth schematic diagram of a display panel provided in an embodiment of this application.

[0019] Figure 10 The display panel provided in the embodiments of this application is configured as a second timing diagram of the touch phase.

[0020] Figure 11 This is a schematic diagram of a display device provided in an embodiment of this application. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0022] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0026] Figure 1 This is a schematic diagram of a comparison display device provided in an embodiment of this application. Figure 2 Timing diagram of a comparative display device provided in an embodiment of this application.

[0027] To illustrate the principle behind the technical problem in the embodiments of this application, a contrast display device is provided. It should be understood that this contrast display device is not considered prior art. Figure 1 , Figure 2 As shown, the comparison display device includes a first electrode block Sensor011, a second electrode block Sensor012, a third electrode block Sensor021, and a fourth electrode block Sensor022. To reduce the number of touch signal lines, two electrode blocks in the same column are connected to the same sensing line, for example... Figure 1 The first electrode block Sensor011 and the second electrode block Sensor012 are connected to the first sensing line RX01, and the third electrode block Sensor021 and the fourth electrode block Sensor022 are connected to the second sensing line RX02. To enable independent operation of each electrode block, a first sensing transistor T01, a second sensing transistor T02, a third sensing transistor T03, and a fourth sensing transistor T04 are respectively connected to each electrode block. Furthermore, a first touch control line TP01 and a second touch control line TP02 are provided to control each transistor. Figure 1 , Figure 2As can be seen, when the first touch control line TP01 receives a high potential and the second touch control line TP02 receives a low potential, the first sensing transistor T01 and the third sensing transistor T03 will turn on. Correspondingly, the first sensing line RX01 and the second sensing line RX02 will output signals to the first electrode block Sensor011 and the third electrode block Sensor021, respectively. When the first touch control line TP01 receives a low potential and the second touch control line TP02 receives a high potential, the second sensing transistor T02 and the fourth sensing transistor T04 will turn on. Correspondingly, the first sensing line RX01 and the second sensing line RX02 will output signals to the second electrode block Sensor012 and the fourth electrode block Sensor022, respectively, thus allowing one sensing line to control two electrode blocks. However, from... Figure 2 As can be seen from the above description, when either the first touch control line TP01 or the second touch control line TP02 is at a low potential, its corresponding electrode block will not input any signal, which is equivalent to the electrode block being in a passive state. At this time, the electrode block will couple with other signal lines or electrodes, affecting other signal lines and being easily affected by other electrode blocks, leading to frequent accidental touches, potential display malfunctions, and poor stability of the electrode block, thus affecting the stability of touch and display. Figure 2 As shown, when the first electrode block Sensor011, the second electrode block Sensor012, the third electrode block Sensor021, and the fourth electrode block Sensor022 are subjected to interference, a certain signal will be generated. Figure 2 The signal shown is regular, but in reality, it may be irregular and fluctuate significantly, leading to touch and display abnormalities. Therefore, existing display panels using time-division driving sensing electrodes have a technical problem of poor touch stability.

[0028] This application provides a display panel and a display device to address the aforementioned technical problems.

[0029] Figure 3 This is a first schematic diagram of a display panel provided in an embodiment of this application. Figure 4 The display panel provided in the embodiments of this application is configured as a first timing diagram of the touch phase. Figure 5 This is a second schematic diagram of a display panel provided in an embodiment of this application. Figure 6 This is a third schematic diagram of a display panel provided in an embodiment of this application. Figure 7 This is a fourth schematic diagram of a display panel provided in an embodiment of this application. Figure 8 This is a fifth schematic diagram of a display panel provided in an embodiment of this application. Figure 9 This is a sixth schematic diagram of a display panel provided in an embodiment of this application. Figure 10The display panel provided in the embodiments of this application is configured as a second timing diagram of the touch phase.

[0030] like Figure 3 , Figure 4 As shown in the figure, this application embodiment provides a display panel 1, which includes a plurality of sensing electrodes 11 arranged in an array and a plurality of sensing signal lines 12. Each of the sensing signal lines 12 is electrically connected to at least two of the sensing electrodes 11. A control transistor 13 and a Zener transistor 15 are provided between each of the sensing electrodes 11 and the corresponding sensing signal line 12. The gate of the control transistor 13 is connected to a control signal line 14. The first electrode of the control transistor 13 is connected to the sensing electrode 11. The second electrode of the control transistor 13 is connected to the sensing signal line 12. The gate of the Zener transistor 15 is connected to a Zener control line 16. The first electrode of the Zener transistor 15 is connected to the sensing electrode 11. The second electrode of the Zener transistor 15 is connected to the Zener drive line LFD. In this configuration, the gates of multiple control transistors 13 connected to multiple sensing electrodes 11 in the same row are connected to the same control signal line 14, while the gates of multiple control transistors 13 connected to multiple sensing electrodes 11 in different rows are connected to different control signal lines 14. The second electrodes of multiple control transistors 13 connected to multiple sensing electrodes 11 in the same row are connected to different sensing signal lines 12. The gates of multiple Zener transistors 15 connected to multiple sensing electrodes 11 in the same row are connected to the same Zener control line 16, while the gates of multiple Zener transistors 15 connected to multiple sensing electrodes 11 in different rows are connected to different Zener control lines 16. The second electrode of each Zener transistor 15 is connected to the Zener drive line LFD. The sensing electrode 11 is configured to input a common signal during the display phase and a sensing signal during the touch phase. When the display panel 1 is configured for the touch phase, one of the control signal lines 14 inputs an active level, while the other control signal lines 14 input an inactive level. One of the voltage regulation control lines 16 inputs an inactive level, while the other voltage regulation control lines 16 input an active level. The sensing electrode 11 connected to the control transistor 13 of the control signal line 14 with an active level is the same as the sensing electrode 11 connected to the voltage regulation transistor 15 of the voltage regulation control line 16 with an inactive level. The voltage regulation drive line LFD is configured to output a regulated signal.

[0031] This application provides a display panel that incorporates voltage-regulating transistors. Each voltage-regulating transistor is connected to a sensing electrode, with its gate connected to a voltage regulation control line, its first electrode connected to the sensing electrode, and its second electrode connected to a voltage regulation drive line. When the display panel is configured for touch operation, one control signal line receives an active level while other control signal lines receive inactive levels. Similarly, one voltage regulation control signal line receives an inactive level while other voltage regulation control signal lines receive an active level. The voltage regulation drive line is configured to output a regulated signal. This ensures that even when no sensing signal is input to the sensing electrode, a regulated signal can still be input, stabilizing the signal on the sensing electrode. This prevents the sensing electrode from being affected by other signals while floating, thus preventing accidental touches, display malfunctions, and improving touch stability.

[0032] Specifically, it is understood that in the embodiments of this application, the sensing electrode is reused as a common electrode. That is, multiple electrodes can be formed by using a common electrode layer in the display panel, and the electrode can be reused as both a sensing electrode and a common electrode. In the touch phase, the sensing electrode transmits sensing signals to realize the touch function, and in the display phase, the sensing electrode transmits common signals to realize the display function.

[0033] Specifically, the effective level refers to the electrical signal that enables the transistor to turn on, and the ineffective level refers to the electrical signal that turns the transistor off. When a high potential signal is input to the gate of the transistor, the transistor turns on, and the effective level refers to the high potential signal. When a low potential signal is input to the gate of the transistor, the transistor turns on, and the effective level refers to the low potential signal. This application embodiment uses the example of the transistor turning on when a high potential signal is input to the gate of the transistor. It can be understood that the type of transistor can be changed so that the transistor turns on when a low potential signal is input to the gate of the transistor.

[0034] Specifically, in this embodiment, each sensing signal line is electrically connected to at least two sensing electrodes, and a transistor is placed between the sensing signal line and the sensing electrodes. By controlling the conduction or shutdown of the transistor control circuit, multiple sensing electrodes electrically connected to the same sensing signal line are driven in a time-division manner, and each sensing electrode can work independently, thereby improving touch accuracy.

[0035] like Figure 3As shown, taking the connection of two adjacent sensing electrodes in two adjacent columns of sensing electrodes by a sensing signal line as an example, it can be seen that the sensing signal line 12 includes a first sensing signal line RX1 and a second sensing signal line RX2, and the sensing electrode 11 includes a first sensing electrode Sensor 11, a second sensing electrode Sensor 12, a third sensing electrode Sensor 21, and a fourth sensing electrode Sensor 22. The first sensing electrode Sensor 11, the second sensing electrode Sensor 12, the third sensing electrode Sensor 21, and the fourth sensing electrode Sensor 22 can be the sensing electrode in the first row and first column, the second row and first column of sensing electrodes, respectively. The system includes a first control transistor T11, a second control transistor T12, a third control transistor T13, and a fourth control transistor T14. The control signal line 14 includes a first control signal line TP-MUX1 and a second control signal line TP-MUX2. The Zener transistor 15 includes a first Zener transistor T21, a second Zener transistor T22, a third Zener transistor T23, and a fourth Zener transistor T24. The Zener control line 16 includes a first Zener control line TP-MUX-MSC1 and a second Zener control line TP-MUX-MSC2.

[0036] like Figure 3 As shown, a control transistor 13 and a voltage regulator transistor 15 are provided between each sensing electrode 11 and the corresponding sensing signal line 12. For example, a first control transistor T11 and a first voltage regulator transistor T21 are provided between the first sensing electrode Sensor 11 and the corresponding first sensing signal line RX1. The gate of the first control transistor T11 and the gate of the third control transistor T13 are both connected to the first control signal line TP-MUX1. The gate of the second control transistor T12 and the gate of the fourth control transistor T14 are both connected to the second control signal line TP-MUX2. The first electrode of the first control transistor T11, the first electrode of the second control transistor T12, the first electrode of the third control transistor T13 and the first electrode of the fourth control transistor T14 are respectively connected to the first sensing electrode Sensor 11, the second sensing electrode Sensor 12, the third sensing electrode Sensor 21 and the fourth sensing electrode Sensor 22. The second electrode of the first control transistor T11 and the second electrode of the second control transistor T12 are connected to the first sensing signal line RX1. The second electrode of the third control transistor T13 and the second electrode of the fourth control transistor are connected to the second sensing signal line RX2.

[0037] like Figure 3As shown, the gates of the first Zener transistor T21 and the third Zener transistor T23 are connected to the first Zener control line TP-MUX-MSC1, and the gates of the second Zener transistor T22 and the fourth Zener transistor T24 are connected to the second Zener control line TP-MUX-MSC2. The first electrodes of the first Zener transistor T21, the second Zener transistor T22, the third Zener transistor T23, and the fourth Zener transistor T24 are respectively connected to the first sensing electrode Sensor11, the second sensing electrode Sensor12, the third sensing electrode Sensor21, and the fourth sensing electrode Sensor22. The second electrodes of the first Zener transistor T21, the second Zener transistor T22, the third Zener transistor T23, and the fourth Zener transistor T24 are connected to the Zener drive line LFD.

[0038] like Figure 4 As shown, when the display panel is configured for touch operation, Figure 3Taking the display panel shown as an example, in the first time period t1, the first control signal line TP-MUX1 inputs an active level, the second control signal line TP-MUX2 inputs an inactive level, the first voltage regulation control line TP-MUX-MSC1 inputs an inactive level, and the second voltage regulation control line TP-MUX-MSC2 inputs an active level. Simultaneously, the first sensing signal line RX1 and the second sensing signal line RX2 input sensing signals, causing the first sensing electrode Sensor11 and the third sensing electrode Sensor21 to input sensing signals, and the second sensing electrode Sensor12 and the fourth sensing electrode Sensor22 to input regulated voltage signals. This ensures that when the first sensing electrode Sensor11 and the third sensing electrode Sensor21 are touched, the second sensing electrode Sensor12 and the fourth sensing electrode Sensor22 input regulated voltage signals. In the second time period t2, the first control signal line TP-MUX1 inputs an inactive level, the second control signal line TP-MUX-MSC2 inputs an active level, and the second control signal line RX2 inputs an active level. The first voltage regulation control line TP-MUX-MSC1 inputs an active voltage level, while the second voltage regulation control line TP-MUX-MSC2 inputs an inactive voltage level. Simultaneously, the first sensing signal line RX1 and the second sensing signal line RX2 input sensing signals, causing the first sensing electrode Sensor11 and the third sensing electrode Sensor21 to input regulated voltage signals, and the second sensing electrode Sensor12 and the fourth sensing electrode Sensor22 to input sensing signals. This ensures that when the second sensing electrode Sensor12 and the fourth sensing electrode Sensor22 are used for touch control, the first sensing electrode Sensor11 and the third sensing electrode Sensor21 input regulated voltage signals, preventing the sensing electrodes from being in a floating potential state, which could lead to coupling between the sensing electrodes and other electrodes or signal lines. This also prevents the sensing electrodes from being affected by other signals and prevents the sensing electrodes from affecting other signals, thus improving touch stability and display stability.

[0039] Taking the comparative display device provided in this application embodiment as an example, during the display stage, both the first touch control line TP01 and the second touch control line TP02 output high-potential signals, causing each transistor to turn on and output a common voltage to each electrode block through the sensing line, thereby realizing the display function. However, from Figure 1 As can be seen, one sensing line needs to input signals to two electrode blocks, resulting in a large load on the sensing line and insufficient signal supply capacity. This can lead to the signal transmitted from the sensing line to the electrode blocks failing to maintain a stable voltage, potentially causing uneven voltage across different electrode blocks, resulting in uneven display and ultimately, display abnormalities.

[0040] To address the above problems, in some embodiments, such as Figure 5As shown, the display panel 1 also includes a switch signal line TPSW, a common signal line COM, and a switch transistor 17. The gate of the switch transistor 17 is connected to the switch signal line TPSW, the first electrode of the switch transistor 17 is electrically connected to the sensing electrode 11, and the second electrode of the switch transistor 17 is connected to the common signal line COM. When the display panel 1 is configured for display, the switch signal line TPSW receives an active voltage level. By configuring the switch transistor, switch signal line, and common signal line, when the display panel is in display mode, the active voltage level on the switch signal line activates the switch transistor, allowing the common signal line to output a common signal to each sensing electrode. This maintains a stable signal for each sensing electrode, improves the uniformity of the common voltage of each sensing electrode, and enables the display panel to display normally.

[0041] Specifically, such as Figure 5 As shown, the switching transistor 17 includes a first transistor T31, a second transistor T32, a third transistor T33, and a fourth transistor T34. The gates of the first transistor T31, the second transistor T32, the third transistor T33, and the fourth transistor T34 are all connected to the switching signal line TPSW. The first electrode of the first transistor T31, the first electrode of the second transistor T32, the first electrode of the third transistor T33, and the first electrode of the fourth transistor T34 are respectively connected to the first sensing electrode Sensor11, the second sensing electrode Sensor12, the third sensing electrode Sensor21, and the fourth sensing electrode Sensor22. The second electrodes of the first transistor T31, the second electrode of the second transistor T32, the second electrode of the third transistor T33, and the second electrode of the fourth transistor T34 are connected to the common signal line.

[0042] Specifically, when the display panel is in the touch phase, the switch signal line receives an invalid level, causing the switch transistor to turn off. The common signal line can either continuously output a common signal or only input a common signal when the display panel is in the display phase.

[0043] In some embodiments, the switching transistor 17 is disposed between the sensing electrode 11 and the Zener transistor 15; or the switching transistor 17 is disposed between the sensing signal line 12 and the control transistor 13; or the switching transistor is disposed on the side of the sensing electrode 11 away from the sensing signal line 12.

[0044] Specifically, when setting the switching transistor, the switching transistor can be placed between the sensing electrode and the Zener transistor, or between the sensing signal line and the control transistor, or on the side of the sensing electrode away from the sensing signal line.

[0045] In some embodiments, such as Figure 6 As shown, the switching transistor 17 includes a first switching transistor 171 and a second switching transistor 172. A first switching transistor 171 is disposed between each sensing electrode 11 and its corresponding sensing signal line 12, and a second switching transistor 172 is disposed between each sensing signal line 12 and its corresponding plurality of sensing electrodes 11. The first switching transistor 171 is disposed between the sensing electrode 11 and the Zener transistor 15, and the second switching transistor 172 is disposed between the control transistor 13 and the sensing signal line 12. By distributing the first switching transistor between the sensing electrode and the Zener transistor, and the second switching transistor between the sensing signal line and the control transistor, the uniformity of the common voltage on each sensing electrode during the display stage can be further improved, eliminating display unevenness caused by voltage unevenness and improving the display effect.

[0046] Specifically, such as Figure 6 As shown, the first switching transistor 171 may include a first transistor T31, a second transistor T32, a third transistor T33, and a fourth transistor T34, and their connection relationship can be found in the above description. The second switching transistor 172 includes a fifth transistor T35 and a sixth transistor T36. The gates of the fifth transistor T35 and the sixth transistor T36 are connected to the switching signal line TPSW. The first electrode of the fifth transistor T35 is connected to the second electrode of the first control transistor T11 and the second control transistor T12. The first electrode of the sixth transistor T36 is connected to the second electrode of the third control transistor T13 and the second control transistor T14. The second electrodes of the fifth transistor T35 and the sixth transistor T36 are connected to the common signal line COM.

[0047] In some embodiments, such as Figure 7 As shown, the switching transistor 17 further includes a third switching transistor 173, which is disposed on the side of the sensing electrode 11 away from the sensing signal line 12. Each sensing electrode 11 is connected to the first electrode of one of the third switching transistors 173. By setting the third switching transistor on the side of the sensing electrode away from the sensing signal line, the stability of the common signal input to the sensing electrode can be further improved, the uniformity of the common voltage of each sensing electrode can be improved, and the display uniformity can be improved.

[0048] Specifically, such as Figure 7As shown, the third switching transistor 173 includes a seventh transistor T37, an eighth transistor T38, a ninth transistor T39, and a tenth transistor T40. The gates of the seventh transistor T37, the eighth transistor T38, the ninth transistor T39, and the tenth transistor T40 are connected to the switching signal line. The first electrodes of the seventh transistor T37, the eighth transistor T38, the ninth transistor T39, and the tenth transistor T40 are respectively connected to the first sensing electrode Sensor11, the second sensing electrode Sensor12, the third sensing electrode Sensor21, and the fourth sensing electrode Sensor22. The second electrodes of the seventh transistor T37, the eighth transistor T38, the ninth transistor T39, and the tenth transistor T40 are connected to the common signal line.

[0049] This addresses the issue of static electricity easily occurring on touch signal lines and touch electrodes, leading to touch and display malfunctions. In some embodiments, such as... Figure 8 As shown, the display panel 1 further includes an anti-static module 18. The anti-static module 18 includes a first anti-static transistor 191, a second anti-static transistor 192, a high-potential signal line VGH, and a low-potential signal line VGL. Each sensing electrode 11 is connected to at least one first anti-static transistor 191 and at least one second anti-static transistor 192. The gate and first electrode of the first anti-static transistor 191 are connected to the sensing electrode 11. The second electrode of the first anti-static transistor 191 is connected to the high-potential signal line VGH. The gate and second electrode of the second anti-static transistor 192 are connected to the low-potential signal line VGL. The first electrode of the second anti-static transistor 192 is connected to the sensing electrode 11.

[0050] Specifically, by setting up an anti-static module, which includes a first anti-static transistor, a second anti-static transistor, a high-potential signal line, and a low-potential signal line, and with the gate and first electrode of the first anti-static transistor connected to the sensing electrode, and the gate of the first anti-static transistor connected to the high-potential signal line, when static electricity with a potential higher than the voltage on the high-potential signal line occurs, the static electricity can be discharged to the high-potential signal line, preventing static electricity from affecting the signal or damaging the display panel. Similarly, by connecting the gate and second electrode of the second anti-static transistor to the low-potential signal line, and the first electrode of the second anti-static transistor connected to the sensing electrode, when static electricity with a potential lower than the voltage on the low-potential signal line occurs, the second anti-static transistor can be turned on, discharging the static electricity to the low-potential signal line, preventing static electricity from affecting the signal or damaging the display panel.

[0051] Specifically, when the potential on the sensing electrode is lower than the potential on the low-potential signal line, the second anti-static transistor will turn on to release static electricity. When the potential on the sensing electrode is higher than the potential on the high-potential signal line, the first anti-static transistor will turn on.

[0052] Specifically, the high-potential signal line outputs a high-potential signal, and the low-potential signal line outputs a low-potential signal.

[0053] In some embodiments, such as Figure 8 As shown, the anti-static module 18 includes a first anti-static module 181 and a second anti-static module 182. The first anti-static module 181 is disposed between the sensing electrode 11 and the Zener transistor 15, and the second anti-static module 182 is disposed on the side of the sensing electrode 11 away from the sensing signal line 12. By providing the first and second anti-static modules, static electricity can be discharged when it occurs, further improving the anti-static capability of the display panel.

[0054] Specifically, such as Figure 8 As shown, the first anti-static transistor 191 includes a first high-static-voltage transistor T41, a second high-static-voltage transistor T42, a third high-static-voltage transistor T43, a fourth high-static-voltage transistor T44, a fifth high-static-voltage transistor T45, a sixth high-static-voltage transistor T46, a seventh high-static-voltage transistor T47, and an eighth high-static-voltage transistor T48. The gates of the first high-static-voltage transistor T41, the second high-static-voltage transistor T42, the third high-static-voltage transistor T43, and the fourth high-static-voltage transistor T44 are respectively connected to the first sensing electrode Sensor11, the second sensing electrode Sensor12, the third sensing electrode Sensor21, and the fourth high-static-voltage transistor T48. The first electrode of the first high-static discharge transistor T41, the first electrode of the second high-static discharge transistor T42, the first electrode of the third high-static discharge transistor T43, and the first electrode of the fourth high-static discharge transistor T44 are respectively connected to the first sensing electrode Sensor11, the second sensing electrode Sensor12, the third sensing electrode Sensor21, and the fourth sensing electrode Sensor22. The second electrodes of the first high-static discharge transistor T41, the second electrode of the second high-static discharge transistor T42, the second electrode of the third high-static discharge transistor T43, and the second electrode of the fourth high-static discharge transistor T44 are connected to the high-potential signal line VGH.

[0055] Specifically, such as Figure 8As shown, the gates of the fifth high-static discharge (ESD) transistor T45, the sixth high-static discharge (ESD) transistor T46, the seventh high-static discharge (ESD) transistor T47, and the eighth high-static discharge (ESD) transistor T48 are respectively connected to the first sensing electrode Sensor11, the second sensing electrode Sensor12, the third sensing electrode Sensor21, and the fourth sensing electrode Sensor22. The first electrodes of the fifth high-static discharge (ESD) transistor T45, the sixth high-static discharge (ESD) transistor T46, the seventh high-static discharge (ESD) transistor T47, and the eighth high-static discharge (ESD) transistor T48 are respectively connected to the first sensing electrode Sensor11, the second sensing electrode Sensor12, the third sensing electrode Sensor21, and the fourth sensing electrode Sensor22. The second electrodes of the fifth high-static discharge (ESD) transistor T45, the sixth high-static discharge (ESD) transistor T46, the seventh high-static discharge (ESD) transistor T47, and the eighth high-static discharge (ESD) transistor T48 are connected to the high-potential signal line VGH.

[0056] Specifically, such as Figure 8 As shown, the second anti-static transistor 192 includes a first low-static-electric transistor T51, a second low-static-electric transistor T52, a third low-static-electric transistor T53, a fourth low-static-electric transistor T54, a fifth low-static-electric transistor T55, a sixth low-static-electric transistor T56, a seventh low-static-electric transistor T57, and an eighth low-static-electric transistor T58. The gates of the first low-static-electric transistor T51, the second low-static-electric transistor T52, the third low-static-electric transistor T53, and the fourth low-static-electric transistor T54 are connected to the low-potential signal line VGL. The first low-static-electric transistor T51... The second electrode, the second electrode of the second low-static discharge transistor T52, the second electrode of the third low-static discharge transistor T53, and the second electrode of the fourth low-static discharge transistor T54 are connected to the low-potential signal line VGL. The first electrode of the first low-static discharge transistor T51, the first electrode of the second low-static discharge transistor T52, the first electrode of the third low-static discharge transistor T53, and the first electrode of the fourth low-static discharge transistor T54 are respectively connected to the first sensing electrode Sensor11, the second sensing electrode Sensor12, the third sensing electrode Sensor21, and the fourth sensing electrode Sensor22.

[0057] Specifically, such as Figure 8As shown, the gates of the fifth low-static discharge transistor T55, the sixth low-static discharge transistor T56, the seventh low-static discharge transistor T57, and the eighth low-static discharge transistor T58 are connected to the low-potential signal line VGL. The second electrodes of the fifth low-static discharge transistor T55, the sixth low-static discharge transistor T56, the seventh low-static discharge transistor T57, and the eighth low-static discharge transistor T58 are connected to the low-potential signal line VGL. The first electrodes of the fifth low-static discharge transistor T55, the sixth low-static discharge transistor T56, the seventh low-static discharge transistor T57, and the eighth low-static discharge transistor T58 are respectively connected to the first sensing electrode Sensor11, the second sensing electrode Sensor12, the third sensing electrode Sensor21, and the fourth sensing electrode Sensor22.

[0058] In some embodiments, such as Figure 3 , Figure 9 As shown, multiple sensing electrodes 11 located in the same row are electrically connected to different sensing signal lines 12, and multiple sensing electrodes 11 located in the same column are electrically connected to the same sensing signal line 12. The number of sensing electrodes 11 electrically connected to the same sensing signal line 12 is the same as the number of Zener transistors 15 electrically connected to the same sensing signal line 12.

[0059] Specifically, such as Figure 3 As shown, each of the aforementioned sensing signal lines is electrically connected to two adjacent sensing electrodes in the same column, and each sensing signal line is connected to two Zener transistors and two control transistors.

[0060] Specifically, such as Figure 9 As shown, each sensing signal line connects to N adjacent sensing electrodes in the same column. The Nth sensing electrode Sensor1N in the first column and the Nth sensing electrode Sensor2N in the second column are connected to different sensing signal lines. Correspondingly, a fifth control transistor T61, a sixth control transistor T62, a fifth Zener transistor T63, a sixth Zener transistor T64, an Nth control signal line TP-MUXN, and an Nth Zener control line TP-MUX-MSCN are configured, and each sensing electrode, sensing signal line, transistor, control signal line, and Zener control line is connected accordingly. Here, N is a positive integer, and N is greater than or equal to 3.

[0061] Specifically, only some of the sensing electrodes and sensing signal lines are shown in the embodiments of this application. For the design of other sensing electrodes and sensing signal lines and their connected components, please refer to the design of the sensing electrodes and sensing signal lines and their connected components described above.

[0062] In some embodiments, such as Figure 4 , Figure 10 As shown, the voltage-regulated drive line LFD is configured to output a low-potential signal; or the voltage-regulated drive line LFD is configured to output a pulse signal, and the time period for the voltage-regulated drive line LFD to output the pulse signal is the same as the time period for the sensing electrode 11 to receive the sensing signal. By enabling the voltage-regulated drive line to output a stable low-potential signal or a stable pulse signal, the inactive sensing electrode can receive a stable signal, avoiding the sensing electrode being affected by other signals while floating or affecting other signals, preventing accidental touches, preventing display malfunctions, and improving touch stability.

[0063] Specifically, when the LFD outputs a low-potential signal or a pulse signal, it can choose not to receive the signal on the corresponding sensing electrode to prevent accidental touch. For example, when the LFD outputs a pulse signal to the second sensing electrode Sensor12 and the fourth sensing electrode Sensor22, it can choose not to receive the signal from the second sensing electrode Sensor12 and the fourth sensing electrode Sensor22 to avoid accidental touch.

[0064] Specifically, Figure 4 The example given is that the amplitude of the pulse signal on the voltage regulator drive line is lower than the amplitude of the pulse signal on the induction signal line. However, the embodiments of this application are not limited to this. The amplitude of the pulse signal on the voltage regulator drive line can be greater than or equal to the amplitude of the pulse signal on the induction signal line.

[0065] Specifically, the first electrode is the source and the second electrode is the drain; or the first electrode is the drain and the second electrode is the source.

[0066] Specifically, the touch control method in the display panel can be capacitive touch.

[0067] Specifically, in the embodiments of this application, electrical connection means that two signal lines can be connected indirectly or directly.

[0068] Specifically, in the embodiments of this application, signal lines with the same reference numerals indicate that the signals transmitted on them are the same, for example... Figure 8 The diagram shows two high-potential signal lines VGH, and the signals on these two VGH lines can be identical. Signal lines with the same label can be connected to the same channel of the driver chip. For example, the two high-potential signal lines VGH can be connected and then bonded to the driver chip via a bonding terminal, reducing the number of channels occupied. Similarly, other signal lines with the same label can use the same design.

[0069] Specifically, it is understood that the embodiments of this application are described using the example of the sensing signal line extending only to the corresponding sensing electrode, but the embodiments of this application are not limited to this. For example, the length of the sensing signal line can be equal, or invalid traces can be set so that the number and density of traces corresponding to each sensing electrode are equal.

[0070] Specifically, in the embodiments of this application, the sensing electrodes can be disposed in the display area, each signal line can be disposed in the non-display area, or each signal line can be disposed in the non-display area and extend to the display area, and each transistor can be disposed in the display area or disposed in the non-display area.

[0071] Specifically, for example, control transistors, voltage regulator transistors, switching transistors, first anti-static transistors and second anti-static transistors can be placed in the non-display area; control signal lines, voltage regulator drive lines, voltage regulator control lines, common signal lines and switching signal lines can be placed in the non-display area; sensing signal lines can be placed in the non-display area and extend to the display area; high-potential signal lines and low-potential signal lines can be placed in the non-display area.

[0072] Specifically, the transistors and signal lines located on the side of the sensing electrode away from the sensing signal line can be located in the non-display area on the upper side of the display panel, while the transistors and signal lines located between the sensing electrode and the sensing signal line can be located in the non-display area on the lower side and the non-display areas on both sides of the display panel.

[0073] Specifically, it is understood that the embodiments of this application provide a detailed description of the display panel in terms of the design of each electrode, each transistor, each trace, and their connection relationships. It is understood that when there is no conflict between the embodiments, the embodiments can be combined. For example, the display panel further includes a switch signal line, a common signal line, and a switch transistor. The gate of the switch transistor is connected to the switch signal line. The first electrode of the switch transistor is electrically connected to the sensing electrode. The second electrode of the switch transistor is connected to the common signal line. When the display panel is configured for the display stage, the switch signal line inputs an effective level. The display panel also includes an anti-static module. The anti-static module includes a first anti-static transistor, a second anti-static transistor, a high-potential signal line, and a low-potential signal line. Each sensing electrode is connected to at least one first anti-static transistor and at least one second anti-static transistor. The gate and the first electrode of the first anti-static transistor are connected to the sensing electrode. The second electrode of the first anti-static transistor is connected to the high-potential signal line. The gate and the second electrode of the second anti-static transistor are connected to the low-potential signal line. The first electrode of the second anti-static transistor is connected to the sensing electrode.

[0074] Meanwhile, this application provides a display device, which includes a display panel as described in any of the above embodiments.

[0075] Specifically, such as Figure 11 As shown, the display device 2 includes a display panel 1 and a driver chip 21, wherein the display panel 1 is connected to the driver chip 21.

[0076] Specifically, the display device may also include a frame, and the display device may be a mobile phone, a laptop computer, or a vehicle display screen. This application embodiment does not limit this.

[0077] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0078] The above provides a detailed description of a display panel and display device provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A display panel, characterized by, The display panel comprises a plurality of sensing electrodes arranged in an array and a plurality of sensing signal lines, each of the sensing signal lines is electrically connected with at least two of the sensing electrodes, each of the sensing electrodes is electrically connected with a control transistor and a voltage stabilizing transistor, a gate of the control transistor is connected with a control signal line, a first electrode of the control transistor is connected with the sensing electrode, a second electrode of the control transistor is connected with the sensing signal line, a gate of the voltage stabilizing transistor is connected with a voltage stabilizing control line, a first electrode of the voltage stabilizing transistor is connected with the sensing electrode, and a second electrode of the voltage stabilizing transistor is connected with a voltage stabilizing driving line; When the display panel is configured as a touch stage, among the control transistor and the voltage stabilizing transistor electrically connected with the same sensing electrode, the control signal line inputs an invalid level, the voltage stabilizing control line inputs a valid level, and the voltage stabilizing driving line is configured to output a voltage stabilizing signal.

2. The display panel of claim 1, wherein, The display panel further comprises a switch signal line, a common signal line and a switch transistor, a gate of the switch transistor is connected with the switch signal line, a first electrode of the switch transistor is electrically connected with the sensing electrode, and a second electrode of the switch transistor is connected with the common signal line, when the display panel is configured as a display stage, the switch signal line inputs a valid level.

3. The display panel of claim 2, wherein, The switch transistor is arranged between the sensing electrode and the voltage stabilizing transistor; and / or, the switch transistor is arranged on a side of the sensing electrode away from the sensing signal line.

4. The display panel of claim 3, wherein, The switch transistor comprises a first switch transistor, and each of the sensing electrodes is provided with a corresponding first switch transistor between the sensing electrode and the corresponding sensing signal line, wherein the first switch transistor is arranged between the sensing electrode and the voltage stabilizing transistor.

5. The display panel of claim 4, wherein, The switch transistor further comprises a third switch transistor, and the third switch transistor is arranged on a side of the sensing electrode away from the sensing signal line, and each of the sensing electrodes is connected with a first electrode of a corresponding third switch transistor.

6. The display panel of any one of claims 1 to 5, wherein, The display panel further comprises an anti-static module, and the anti-static module comprises a first anti-static transistor, a second anti-static transistor, a high potential signal line and a low potential signal line. A gate of the first anti-static transistor and a first electrode of the first anti-static transistor are connected with the sensing electrode, a second electrode of the first anti-static transistor is connected with the high potential signal line, a gate of the second anti-static transistor and a second electrode of the second anti-static transistor are connected with the low potential signal line, and a first electrode of the second anti-static transistor is connected with the sensing electrode.

7. The display panel of claim 6, wherein, The anti-static module is arranged on a side of the sensing electrode away from the sensing signal line.

8. The display panel of claim 6, wherein, The anti-static module comprises a first anti-static module and a second anti-static module, the first anti-static module is arranged between the sensing electrode and the voltage stabilizing transistor, and the second anti-static module is arranged on a side of the sensing electrode away from the sensing signal line.

9. The display panel of any one of claims 1 to 5, wherein, The gates of the control transistors connected to the plurality of sensing electrodes in the same row are connected to the same control signal line, the gates of the control transistors connected to the plurality of sensing electrodes in different rows are connected to different control signal lines, and the second electrodes of the control transistors connected to the plurality of sensing electrodes in the same row are connected to different sensing signal lines.

10. The display panel of claim 9, wherein, The plurality of sensing electrodes in the same row are electrically connected to different sensing signal lines, the plurality of sensing electrodes in the same column are electrically connected to the same sensing signal line, and the number of the sensing electrodes electrically connected to the same sensing signal line is the same as the number of the voltage stabilizing transistors electrically connected to the same sensing signal line.

11. The display panel of any one of claims 1 to 5, wherein, The gates of the voltage stabilizing transistors connected to the plurality of sensing electrodes in the same row are connected to the same voltage stabilizing control line, the gates of the voltage stabilizing transistors connected to the plurality of sensing electrodes in different rows are connected to different voltage stabilizing control lines, and the second electrodes of the voltage stabilizing transistors are all connected to a voltage stabilizing driving line.

12. The display panel of any one of claims 1 to 5, wherein, The sensing electrodes are configured to input a common signal in a display stage, and the sensing electrodes are configured such that, in a touch control stage, one control signal line inputs an effective level, other control signal lines input an ineffective level, one voltage stabilizing control line inputs an ineffective level, other voltage stabilizing control lines input an effective level, and the sensing electrodes connected to the control transistors connected to the control signal line inputting the effective level are the same as the sensing electrodes connected to the voltage stabilizing transistors connected to the voltage stabilizing control line inputting the ineffective level.

13. The display panel of any one of claims 1 to 5, wherein, The voltage stabilizing driving line is configured to output a low potential signal, or the voltage stabilizing driving line is configured to output a pulse signal, and the time period during which the voltage stabilizing driving line outputs the pulse signal is the same as the time period during which the sensing electrodes receive a sensing signal.

14. A display device comprising: The display panel as claimed in any one of claims 1 to 13.

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