Display panel and display device

Abstract

Embodiments of the present application provide a display panel and a display device. The display panel is provided with voltage-stabilizing transistors, each of which is connected to a sensing electrode. The gate of the voltage-stabilizing transistor is connected to a voltage-stabilizing control line. The first electrode of the voltage-stabilizing transistor is connected to the sensing electrode. The second electrode of the voltage-stabilizing transistor is connected to a voltage-stabilizing drive line. When the display panel is configured in a touch-sensitive stage, one control signal line inputs a valid level, and the other control signal lines input invalid levels. One voltage-stabilizing control signal line inputs an invalid level, and the other voltage-stabilizing control signal lines input valid levels. The voltage-stabilizing drive line is configured to output a voltage-stabilizing signal. Thus, when the sensing electrode does not input a sensing signal, the sensing electrode can input a voltage-stabilizing signal, thereby stabilizing the signal on the sensing electrode, preventing the sensing electrode from being affected by other signals or affecting other signals when it is suspended, preventing false touches, preventing poor display, and improving touch stability.

Description

Technical Field

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

[0002] In order to realize the touch function, existing display devices integrate the display driver and touch driver together on the display panel. In order to reduce costs and reduce the thickness of the display device, the common electrode blocks in the common electrode layer are reused as sensing electrodes. As display devices develop towards large sizes, narrow borders, and high screen-to-body ratios, in order to maintain the touch accuracy, more touch lines need to be added, and each touch line requires a channel output signal on the corresponding driver chip. However, the number of channels for a drive signal is limited, and accordingly more driver chips need to be added, resulting in higher costs and larger borders for the display device. In order to solve the above problems, existing display devices use one sensing signal line to control two sensing electrodes within the surface, thereby reducing the number of touch lines without sacrificing touch accuracy. However, the above solution has the following problems: when one of the sensing electrodes does not input a signal, the sensing electrode is in a passive state, without any DC or AC voltage for signal transmission. The sensing electrode is easily affected by other signals and may be falsely touched. The sensing electrode may also affect other signals and cause poor display.

[0003] Therefore, the existing display panel using time-sharing drive sensing electrodes has a technical problem of poor touch stability. Summary of the Invention

[0004] Embodiments of the present application provide a display panel and a display device to solve the technical problem of poor touch stability in existing display panels that use time-sharing drive sensing electrodes.

[0005] An embodiment of the present application provides a display panel, comprising a plurality of sensing electrodes and a plurality of sensing signal lines arranged in an array, wherein each sensing signal line is electrically connected to at least two sensing electrodes, and a control transistor and a voltage-stabilizing transistor are provided 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 voltage-stabilizing transistor is connected to a voltage-stabilizing control line, the first electrode of the voltage-stabilizing transistor is connected to the sensing electrode, and the second electrode of the voltage-stabilizing transistor is connected to the voltage-stabilizing drive line.

[0006] The gates of the control transistors connected to the sensing electrodes in the same row are connected to the same control signal line, the gates of the control transistors connected to the sensing electrodes in different rows are connected to different control signal lines, and the second electrodes of the control transistors connected to the sensing electrodes in the same row are connected to different sensing signal lines; the gates of the voltage-regulating transistors connected to the sensing electrodes in the same row are connected to the same voltage-regulating control line, the gates of the voltage-regulating transistors connected to the sensing electrodes in different rows are connected to different voltage-regulating control lines, and the second electrodes of the voltage-regulating transistors are all connected to the voltage-regulating driving line.

[0007] The sensing electrodes are configured to input common signals in a display phase, and the sensing electrodes are configured to input sensing signals in a touch phase. When the display panel is configured in the touch phase, one of the control signal lines inputs a valid level, and the other control signal lines input an invalid level. One of the voltage stabilization control lines inputs an invalid level, and the other voltage stabilization control lines input a valid level. The sensing electrode connected to the control transistor connected to the control signal line inputting the valid level is the same as the sensing electrode connected to the voltage stabilization transistor connected to the voltage stabilization control line inputting the invalid level. The voltage stabilization drive line is configured to output a stabilization signal.

[0008] At the same time, an embodiment of the present application provides a display device, which includes the display panel as described in any of the above embodiments.

[0009] Beneficial effects: The embodiments of the present application provide a display panel and a display device; the display panel is provided with voltage-stabilizing transistors, each of which is connected to a sensing electrode, a gate of the voltage-stabilizing transistor is connected to a voltage-stabilizing control line, a first electrode of the voltage-stabilizing transistor is connected to the sensing electrode, and a second electrode of the voltage-stabilizing transistor is connected to a voltage-stabilizing drive line. When the display panel is configured in a touch-sensitive stage, a control signal line inputs a valid level, and other control signal lines input invalid levels; a voltage-stabilizing control signal line inputs an invalid level, and other voltage-stabilizing control signal lines input valid levels; and the voltage-stabilizing drive line is configured to output a voltage-stabilizing signal, so that when the sensing electrode does not input a sensing signal, the sensing electrode can input a voltage-stabilizing signal, so that the signal on the sensing electrode is stable, and the sensing electrode is prevented from being affected by other signals or affecting other signals when it is suspended in the air, thereby preventing false touches, preventing poor display, and improving touch stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings will make the technical solutions and other beneficial effects of the present application apparent.

[0011] Figure 1 A schematic diagram of a comparative display device provided in an embodiment of the present application.

[0012] Figure 2 This is a timing diagram of a comparative display device provided in an embodiment of the present application.

[0013] Figure 3 This is a first schematic diagram of a display panel provided in an embodiment of the present application.

[0014] Figure 4 The display panel provided in the embodiment of the present application is configured as the first timing diagram in the touch stage.

[0015] Figure 5 This is a second schematic diagram of a display panel provided in an embodiment of the present application.

[0016] Figure 6 This is a third schematic diagram of the display panel provided in an embodiment of the present application.

[0017] Figure 7 This is a fourth schematic diagram of the display panel provided in an embodiment of the present application.

[0018] Figure 8 This is a fifth schematic diagram of a display panel provided in an embodiment of the present application.

[0019] Figure 9 This is a sixth schematic diagram of a display panel provided in an embodiment of the present application.

[0020] Figure 10 The display panel provided in the embodiment of the present application is configured as the second timing diagram of the touch stage.

[0021] Figure 11 A schematic diagram of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0023] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0025] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0026] The disclosure below provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0027] Figure 1 A schematic diagram of a comparative display device provided in an embodiment of the present application. Figure 2 This is a timing diagram of a comparative display device provided in an embodiment of the present application.

[0028] In order to illustrate the principle of the technical problem of the embodiment of the present application, a comparative display device is provided. It is understood that the comparative display device cannot be regarded as the existing technology in this field. Figure 1 、 Figure 2 As shown, the comparative display device includes a first electrode block Sensor011, a second electrode block Sensor012, a third electrode block Sensor021 and a fourth electrode block Sensor022. In order 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. In order to realize the 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, and a first touch control line TP01 and a second touch control line TP02 are set to control each transistor. Figure 1 、 Figure 2It can be seen that when the first touch control line TP01 inputs a high potential and the second touch control line TP02 inputs a low potential, the first sensing transistor T01 and the third sensing transistor T03 will be turned on, and the corresponding 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 inputs a low potential and the second touch control line TP02 inputs a high potential, the second sensing transistor T02 and the fourth sensing transistor T04 will be turned on, and the corresponding 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, so that one sensing line controls two electrode blocks. But from Figure 2 As can be seen from the above description, when one of the first touch control line TP01 and the second touch control line TP02 is at a low potential, the 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 be coupled with other signal lines or electrodes, and will affect other signal lines, and will be easily affected by other electrode blocks, resulting in false touches and poor display. The electrode block has poor stability, affecting touch and display stability. Figure 2 As shown, it is shown that when the first electrode block Sensor011, the second electrode block Sensor012, the third electrode block Sensor021 and the fourth electrode block Sensor022 are disturbed, certain signals will be generated. Figure 2 The signal shown in FIG is regular, but in reality the signal may be irregular and fluctuate greatly, resulting in abnormal touch and display. Therefore, the existing display panel using time-sharing drive sensing electrodes has a technical problem of poor touch stability.

[0029] In view of the above problems, embodiments of the present application provide a display panel and a display device to solve the above technical problems.

[0030] Figure 3 This is a first schematic diagram of a display panel provided in an embodiment of the present application. Figure 4 The display panel provided in the embodiment of the present application is configured as the first timing diagram in the touch stage. Figure 5 This is a second schematic diagram of a display panel provided in an embodiment of the present application. Figure 6 This is a third schematic diagram of the display panel provided in an embodiment of the present application. Figure 7 This is a fourth schematic diagram of the display panel provided in an embodiment of the present application. Figure 8 This is a fifth schematic diagram of a display panel provided in an embodiment of the present application. Figure 9 This is a sixth schematic diagram of a display panel provided in an embodiment of the present application. Figure 10The display panel provided in the embodiment of the present application is configured as the second timing diagram of the touch stage.

[0031] like Figure 3 、 Figure 4 As shown, an embodiment of the present application provides a display panel, the display panel 1 including a plurality of sensing electrodes 11 and a plurality of sensing signal lines 12 arranged in an array, each sensing signal line 12 being electrically connected to at least two sensing electrodes 11, a control transistor 13 and a voltage-stabilizing transistor 15 being provided between each sensing electrode 11 and the corresponding sensing signal line 12, the gate of the control transistor 13 being connected to the control signal line 14, the first electrode of the control transistor 13 being connected to the sensing electrode 11, the second electrode of the control transistor 13 being connected to the sensing signal line 12, the gate of the voltage-stabilizing transistor 15 being connected to the voltage-stabilizing control line 16, the first electrode of the voltage-stabilizing transistor 15 being connected to the sensing electrode 11, and the second electrode of the voltage-stabilizing transistor 15 being connected to the voltage-stabilizing drive line LFD;

[0032] The gates of the control transistors 13 connected to the sensing electrodes 11 in the same row are connected to the same control signal line 14, while the gates of the control transistors 13 connected to the sensing electrodes 11 in different rows are connected to different control signal lines 14. The second electrodes of the control transistors 13 connected to the sensing electrodes 11 in the same row are connected to different sensing signal lines 12. The gates of the voltage-regulating transistors 15 connected to the sensing electrodes 11 in the same row are connected to the same voltage-regulating control line 16, while the gates of the voltage-regulating transistors 15 connected to the sensing electrodes 11 in different rows are connected to different voltage-regulating control lines 16. The second electrodes of the voltage-regulating transistors 15 are all connected to the voltage-regulating drive line LFD.

[0033] The sensing electrodes 11 are configured to input common signals in the display phase and to input sensing signals in the touch phase. When the display panel 1 is configured in the touch phase, one of the control signal lines 14 inputs a valid level, the other control signal lines 14 input an invalid level, one of the voltage stabilization control lines 16 inputs an invalid level, and the other voltage stabilization control lines 16 input a valid level. The sensing electrode 11 connected to the control transistor 13 connected to the control signal line 14 inputting the valid level is the same as the sensing electrode 11 connected to the voltage stabilization transistor 15 connected to the voltage stabilization control line 16 inputting the invalid level. The voltage stabilization drive line LFD is configured to output a stabilization signal.

[0034] An embodiment of the present application provides a display panel. The display panel is provided with voltage-stabilizing transistors, each of which is connected to a sensing electrode. The gate of the voltage-stabilizing transistor is connected to a voltage-stabilizing control line. The first electrode of the voltage-stabilizing transistor is connected to the sensing electrode. The second electrode of the voltage-stabilizing transistor is connected to a voltage-stabilizing drive line. When the display panel is configured in a touch-sensitive stage, one control signal line inputs a valid level, and the other control signal lines input invalid levels. One voltage-stabilizing control signal line inputs an invalid level, and the other voltage-stabilizing control signal lines input valid levels. The voltage-stabilizing drive line is configured to output a voltage-stabilizing signal. Thus, when the sensing electrode does not input a sensing signal, the sensing electrode can input a voltage-stabilizing signal. This stabilizes the signal on the sensing electrode, prevents the sensing electrode from being affected by other signals or affecting other signals when it is suspended, prevents false touches, prevents display defects, and improves touch stability.

[0035] Specifically, it can be understood that in the embodiment of the present application, the sensing electrodes are multiplexed as common electrodes, that is, the common electrode layer in the display panel can be used to form a plurality of electrodes arranged at intervals, and the electrodes are multiplexed as sensing electrodes and common electrodes. In the touch stage, the sensing electrodes transmit sensing signals to realize the touch function, and in the display stage, the sensing electrodes transmit common signals to realize the display function.

[0036] Specifically, the effective level refers to an electrical signal that can turn on the transistor, and the invalid level refers to an electrical signal that turns off the transistor. When a high-voltage signal is input to the gate of the transistor, the transistor is turned on, and the effective level refers to the high-voltage signal. When a low-voltage signal is input to the gate of the transistor, the transistor is turned on, and the effective level refers to the low-voltage signal. The embodiment of the present application is explained by taking the example of turning on the transistor when a high-voltage 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 is turned on when a low-voltage signal is input to the gate of the transistor.

[0037] Specifically, in the embodiments of the present application, each sensing signal line is electrically connected to at least two sensing electrodes, and a transistor is provided between the sensing signal line and the sensing electrode. By controlling the conduction or shutdown of the circuit through the transistor, multiple sensing electrodes electrically connected to the same sensing signal line are driven in a time-sharing manner. Each sensing electrode can work independently, thereby improving touch accuracy.

[0038] like Figure 3As shown in FIG. 1 , taking the example of a sensing signal line connecting two adjacent sensing electrodes in two adjacent columns of sensing electrodes, 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 Sensor11, a second sensing electrode Sensor12, a third sensing electrode Sensor21, and a fourth sensing electrode Sensor22. The first sensing electrode Sensor11, the second sensing electrode Sensor12, the third sensing electrode Sensor21, and the fourth sensing electrode Sensor22 can be the sensing electrode in the first row and the first column, the sensing electrode in the second row and the first column, respectively. The sensing electrode in the first row and the second column, and the sensing electrode in the second row and the second column, accordingly, the control transistor 13 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 voltage-stabilizing transistor 15 includes a first voltage-stabilizing transistor T21, a second voltage-stabilizing transistor T22, a third voltage-stabilizing transistor T23 and a fourth voltage-stabilizing transistor T24, and the voltage-stabilizing control line 16 includes a first voltage-stabilizing control line TP-MUX-MSC1 and a second voltage-stabilizing control line TP-MUX-MSC2.

[0039] like Figure 3 As shown, a control transistor 13 and a voltage-stabilizing 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-stabilizing transistor T21 are provided between the first sensing electrode Sensor11 and the corresponding first sensing signal line RX1. The gates of the first control transistor T11 and the third control transistor T13 are both connected to the first control signal line TP-MUX1, and the gates of the second control transistor T12 and 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 Sensor11, the second sensing electrode Sensor12, the third sensing electrode Sensor21, and the fourth sensing electrode Sensor22. 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, and 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.

[0040] like Figure 3As shown, the gates of the first voltage-stabilizing transistor T21 and the third voltage-stabilizing transistor T23 are connected to the first voltage-stabilizing control line TP-MUX-MSC1, the gates of the second voltage-stabilizing transistor T22 and the fourth voltage-stabilizing transistor T24 are connected to the second voltage-stabilizing control line TP-MUX-MSC2, the first electrode of the first voltage-stabilizing transistor T21, the first electrode of the second voltage-stabilizing transistor T22, the first electrode of the third voltage-stabilizing transistor T23, and the first electrode of the fourth voltage-stabilizing 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, and the second electrode of the first voltage-stabilizing transistor T21, the second electrode of the second voltage-stabilizing transistor T22, the second electrode of the third voltage-stabilizing transistor T23, and the second electrode of the fourth voltage-stabilizing transistor T24 are connected to the voltage-stabilizing drive line LFD.

[0041] like Figure 4 As shown in FIG. 1 , it can be seen that when the display panel is configured as a touch stage, Figure 3As an example, in the display panel shown in FIG. 1 , in the first time period t1, the first control signal line TP-MUX1 inputs a valid level, the second control signal line TP-MUX2 inputs an invalid level, the first voltage regulation control line TP-MUX-MSC1 inputs an invalid level, and the second voltage regulation control line TP-MUX-MSC2 inputs a valid level. At the same time, the first sensing signal line RX1 and the second sensing signal line RX2 input sensing signals, so that the first sensing electrode Sensor 11 and the third sensing electrode Sensor 21 input sensing signals, and the second sensing electrode Sensor 12 and the fourth sensing electrode Sensor 22 input voltage regulation signals. When the first sensing electrode Sensor 11 and the third sensing electrode Sensor 21 realize touch control, the second sensing electrode Sensor 12 and the fourth sensing electrode Sensor 22 input voltage regulation signals. In the second time period t2, the first control signal line TP-MUX1 inputs an invalid level, the second control signal line TP-MUX-MSC1 inputs an invalid level, and the second voltage regulation control line TP-MUX-MSC2 inputs a valid level. At the same time, the first sensing signal line RX1 and the second sensing signal line RX2 input sensing signals, so that the first sensing electrode Sensor 11 and the third sensing electrode Sensor 21 input sensing signals, and the second sensing electrode Sensor 12 and the fourth sensing electrode Sensor 22 input voltage regulation signals. The first voltage stabilization control line TP-MUX-MSC1 inputs a valid level, and the second voltage stabilization control line TP-MUX-MSC2 inputs an invalid level. At the same time, the first sensing signal line RX1 and the second sensing signal line RX2 input sensing signals, so that the first sensing electrode Sensor11 and the third sensing electrode Sensor21 input voltage stabilization signals, and the second sensing electrode Sensor12 and the fourth sensing electrode Sensor22 input sensing signals. When the second sensing electrode Sensor12 and the fourth sensing electrode Sensor22 implement touch control, the first sensing electrode Sensor11 and the third sensing electrode Sensor21 input voltage stabilization signals, thereby preventing the sensing electrodes from being in a floating potential state, resulting in coupling between the sensing electrodes and other electrodes or signal lines, preventing the sensing electrodes from being affected by other signals, and preventing the sensing electrodes from affecting other signals, thereby improving touch stability and display stability.

[0042] Taking the comparative display device provided in the embodiment of the present application as an example, in the display stage, the first touch control line TP01 and the second touch control line TP02 both output high potential signals, turning on each transistor and outputting a common voltage to each electrode block through the sensing line to realize the display function. Figure 1 As can be seen, one sensing line needs to input signals to two electrode blocks, resulting in a heavy load on the sensing line and insufficient signal supply capacity. The signal transmitted from the sensing line to the electrode block cannot maintain a stable voltage, and the voltages of different electrode blocks may be uneven, resulting in uneven display and further display abnormalities.

[0043] In order to solve the above problems, in some embodiments, Figure 5As shown, the display panel 1 further includes a switching signal line TPSW, a common signal line COM, and a switching transistor 17. The gate of the switching transistor 17 is connected to the switching signal line TPSW, the first electrode of the switching transistor 17 is electrically connected to the sensing electrode 11, and the second electrode of the switching transistor 17 is connected to the common signal line COM. When the display panel 1 is configured in the display phase, the switching signal line TPSW inputs an active voltage level. By configuring the switching transistor, the switching signal line, and the common signal line, when the display panel is in the display phase, the switching signal line inputs an active voltage level to turn on the switching transistor, and the common signal line can output a common signal to each sensing electrode, thereby maintaining a stable signal at each sensing electrode, improving the uniformity of the common voltage across each sensing electrode, and ensuring normal display of the display panel.

[0044] 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 electrode 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.

[0045] Specifically, when the display panel is in the touch stage, the switch signal line inputs an invalid level to turn off the switch transistor. The common signal line can continuously output the common signal or input the common signal only when the display panel is in the display stage.

[0046] In some embodiments, the switch transistor 17 is disposed between the sensing electrode 11 and the voltage regulator transistor 15 ; or the switch transistor 17 is disposed between the sensing signal line 12 and the control transistor 13 ; or the switch transistor is disposed on a side of the sensing electrode 11 away from the sensing signal line 12 .

[0047] Specifically, when setting the switching transistor, the switching transistor can be set between the sensing electrode and the voltage regulating 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.

[0048] In some embodiments, 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 provided between each sensing electrode 11 and the corresponding sensing signal line 12, and a second switching transistor 172 is provided between each sensing signal line 12 and the corresponding plurality of sensing electrodes 11. The first switching transistor 171 is provided between the sensing electrode 11 and the voltage-stabilizing transistor 15, and the second switching transistor 172 is provided between the control transistor 13 and the sensing signal line 12. By providing the first switching transistor between the sensing electrode and the voltage-stabilizing 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 phase can be further improved, thereby eliminating display unevenness caused by voltage unevenness and improving the display effect.

[0049] Specifically, such as Figure 6 As shown, the first switch 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 referred to the above description. The second switch 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 switch 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 electrode of 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 electrode of the fourth control transistor T14. The second electrode of the fifth transistor T35 and the second electrode of the sixth transistor T36 are connected to the common signal line COM.

[0050] In some embodiments, as Figure 7 As shown, the switching transistor 17 further includes a third switching transistor 173, which is disposed on a side of the sensing electrode 11 away from the sensing signal line 12. Each sensing electrode 11 is connected to a first electrode of the third switching transistor 173. By providing the third switching transistor, and disposing the third switching transistor on a side of the sensing electrode away from the sensing signal line, the stability of the common signal input to the sensing electrodes can be further improved, the uniformity of the common voltage across the sensing electrodes can be improved, and display uniformity can be improved.

[0051] Specifically, such as Figure 7As shown, the third switch 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 switch signal line. The first electrodes of the seventh transistor T37, the eighth transistor T38, the ninth transistor T39, and the tenth transistor T40 are connected to the first sensing electrode Sensor11, the second sensing electrode Sensor12, the third sensing electrode Sensor21, and the fourth sensing electrode Sensor22, respectively. 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.

[0052] To solve the problem that static electricity is easily generated on the touch signal line and touch electrode, causing abnormal touch and display. Figure 8 As shown, the display panel 1 further includes an anti-static module 18, which 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 of the sensing electrodes 11 is connected to at least one of the first anti-static transistors 191 and at least one of the second anti-static transistors 192. The gate of the first anti-static transistor 191 and the 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 of the second anti-static transistor 192 and the second electrode of the second anti-static transistor 192 are connected to the low-potential signal line VGL, and the first electrode of the second anti-static transistor 192 is connected to the sensing electrode 11.

[0053] Specifically, by setting up 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, and the gate of the first anti-static transistor and the first electrode of the first anti-static transistor are connected to the sensing electrode, and the gate of the first anti-static transistor is 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 conducted to the high-potential signal line to prevent static electricity from affecting the signal or damaging the display panel; the gate of the second anti-static transistor and the second electrode of the second anti-static transistor are connected to the low-potential signal line, and the first electrode of the second anti-static transistor is 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 to conduct the static electricity to the low-potential signal line to prevent static electricity from affecting the signal or damaging the display panel.

[0054] Specifically, when the potential on the sensing electrode is lower than the potential on the low-potential signal line, the second anti-static transistor is turned 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 is turned on.

[0055] Specifically, the high-potential signal line outputs a high-potential signal, and the low-potential signal line outputs a low-potential signal.

[0056] In some embodiments, 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 voltage-stabilizing transistor 15, and the second anti-static module 182 is disposed on a 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.

[0057] Specifically, such as Figure 8 As shown, the first anti-static transistor 191 includes a first anti-high static transistor T41, a second anti-high static transistor T42, a third anti-high static transistor T43, a fourth anti-high static transistor T44, a fifth anti-high static transistor T45, a sixth anti-high static transistor T46, a seventh anti-high static transistor T47 and an eighth anti-high static transistor T48, and the gate of the first anti-high static transistor T41, the gate of the second anti-high static transistor T42, the gate of the third anti-high static transistor T43 and the gate of the fourth anti-high static 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 first electrode of the first high static electricity protection transistor T41, the first electrode of the second high static electricity protection transistor T42, the first electrode of the third high static electricity protection transistor T43, and the first electrode of the fourth high static electricity protection transistor T44 are connected to the first sensing electrode Sensor11, the second sensing electrode Sensor12, the third sensing electrode Sensor21, and the fourth sensing electrode Sensor22, respectively. The second electrode of the first high static electricity protection transistor T41, the second electrode of the second high static electricity protection transistor T42, the second electrode of the third high static electricity protection transistor T43, and the second electrode of the fourth high static electricity protection transistor T44 are connected to the high potential signal line VGH.

[0058] Specifically, such as Figure 8As shown, the gate of the fifth high ESD protection transistor T45, the gate of the sixth high ESD protection transistor T46, the gate of the seventh high ESD protection transistor T47, and the gate of the eighth high ESD protection transistor T48 are connected to the first sensing electrode Sensor11, the second sensing electrode Sensor12, the third sensing electrode Sensor21, and the fourth sensing electrode Sensor22, respectively; the first electrode of the fifth high ESD protection transistor T45, the first electrode of the sixth high ESD protection transistor T46, the first electrode of the seventh high ESD protection transistor T47, and the first electrode of the eighth high ESD protection transistor T48 are connected to the first sensing electrode Sensor11, the second sensing electrode Sensor12, the third sensing electrode Sensor21, and the fourth sensing electrode Sensor22, respectively; and the second electrode of the fifth high ESD protection transistor T45, the second electrode of the sixth high ESD protection transistor T46, the second electrode of the seventh high ESD protection transistor T47, and the second electrode of the eighth high ESD protection transistor T48 are connected to the high potential signal line VGH.

[0059] Specifically, such as Figure 8 As shown, the second anti-static transistor 192 includes a first anti-static low-static transistor T51, a second anti-static low-static transistor T52, a third anti-static low-static transistor T53, a fourth anti-static low-static transistor T54, a fifth anti-static low-static transistor T55, a sixth anti-static low-static transistor T56, a seventh anti-static low-static transistor T57 and an eighth anti-static low-static transistor T58, the gate of the first anti-static low-static transistor T51, the gate of the second anti-static low-static transistor T52, the gate of the third anti-static low-static transistor T53 and the gate of the fourth anti-static low-static transistor T54 are connected to the low potential signal line VGL, and the first anti-static low-static transistor T51 is connected to the low potential signal line VGL. The second electrode of the second low static electricity protection transistor T52, the second electrode of the third low static electricity protection transistor T53, and the second electrode of the fourth low static electricity protection transistor T54 are connected to the low potential signal line VGL, and the first electrode of the first low static electricity protection transistor T51, the first electrode of the second low static electricity protection transistor T52, the first electrode of the third low static electricity protection transistor T53, and the first electrode of the fourth low static electricity protection 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.

[0060] Specifically, such as Figure 8As shown, the gate of the fifth low static protection transistor T55, the gate of the sixth low static protection transistor T56, the gate of the seventh low static protection transistor T57, and the gate of the eighth low static protection transistor T58 are connected to the low potential signal line VGL, the second electrode of the fifth low static protection transistor T55, the second electrode of the sixth low static protection transistor T56, the second electrode of the seventh low static protection transistor T57, and the second electrode of the eighth low static protection transistor T58 are connected to the low potential signal line VGL, and the first electrode of the fifth low static protection transistor T55, the first electrode of the sixth low static protection transistor T56, the first electrode of the seventh low static protection transistor T57, and the first electrode of the eighth low static protection 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.

[0061] In some embodiments, as Figure 3 、 Figure 9 As shown, a plurality of sensing electrodes 11 located in the same row are electrically connected to different sensing signal lines 12, and a plurality of 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 voltage-regulating transistors 15 electrically connected to the same sensing signal line 12.

[0062] Specifically, such as Figure 3 As shown, each of the sensing signal lines is electrically connected to two adjacent sensing electrodes in the same column. Correspondingly, each of the sensing signal lines is electrically connected to two voltage-stabilizing transistors, and each of the sensing signal lines is connected to two control transistors.

[0063] Specifically, such as Figure 9 As shown, each sensing signal line connects 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. Accordingly, a fifth control transistor T61, a sixth control transistor T62, a fifth voltage-stabilizing transistor T63, a sixth voltage-stabilizing transistor T64, an Nth control signal line TP-MUXN, and an Nth voltage-stabilizing control line TP-MUX-MSCN are provided, and the sensing electrodes, sensing signal lines, transistors, control signal lines, and voltage-stabilizing control lines are connected accordingly. N is a positive integer, and N is greater than or equal to 3.

[0064] Specifically, only some sensing electrodes and sensing signal lines are shown in the embodiment of the present application. For the design of other sensing electrodes and sensing signal lines and components connected thereto, reference can be made to the design of the above-mentioned sensing electrodes and sensing signal lines and components connected thereto.

[0065] In some embodiments, as Figure 4 、 Figure 10 As shown, the voltage-stabilized drive line LFD is configured to output a low-potential signal; or the voltage-stabilized drive line LFD is configured to output a pulse signal, and the time period during which the voltage-stabilized drive line LFD outputs the pulse signal coincides with the time period during which the sensing electrode 11 receives the sensing signal. By having the voltage-stabilized drive line output a stable low-potential signal or a stable pulse signal, the inactive sensing electrodes can receive a stable signal, preventing the sensing electrodes from being affected by other signals or affecting other signals while suspended in the air, preventing false touches, preventing display defects, and improving touch stability.

[0066] Specifically, when the voltage-stabilized driving line LFD outputs a low-potential signal or a pulse signal, the signal on the corresponding sensing electrode may not be received to prevent false touches. For example, when the voltage-stabilized driving line LFD outputs a pulse signal to the second sensing electrode Sensor 12 and the fourth sensing electrode Sensor 22, the signal from the second sensing electrode Sensor 12 and the fourth sensing electrode Sensor 22 may not be received to avoid false touches.

[0067] Specifically, Figure 4 In the description, the amplitude of the pulse signal on the voltage-stabilizing driving line is lower than the amplitude of the pulse signal on the sensing signal line. However, the embodiments of the present application are not limited thereto. The amplitude of the pulse signal on the voltage-stabilizing driving line can be greater than or equal to the amplitude of the pulse signal on the sensing signal line.

[0068] Specifically, the first electrode is a source electrode and the second electrode is a drain electrode; or the first electrode is a drain electrode and the second electrode is a source electrode.

[0069] Specifically, the touch mode in the display panel may be mutual capacitive touch.

[0070] Specifically, in the embodiment of the present application, electrical connection means that two signal lines can be indirectly connected or directly connected.

[0071] Specifically, in the embodiment of the present application, signal lines with the same reference numerals indicate that the signals transmitted thereon are the same, for example Figure 8 Two high-potential signal lines VGH are shown. The signals on these two high-potential signal lines VGH can be identical. Signal lines with the same number 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 bound to the driver chip via a binding terminal, reducing the number of occupied channels. Similarly, the above design can be used for other signal lines with the same number.

[0072] Specifically, it will be understood that the embodiments of the present application are described by taking the example of the sensing signal lines extending only to the corresponding sensing electrodes, but the embodiments of the present application are not limited thereto. For example, the lengths of the sensing signal lines may be equal, or inactive lines may be provided so that the number and arrangement density of lines corresponding to the sensing electrodes are equal.

[0073] Specifically, the sensing electrodes in the embodiments of the present application may be arranged in the display area, the signal lines may be arranged in the non-display area, or the signal lines may be arranged in the non-display area and extend to the display area, and the transistors may be arranged in the display area or in the non-display area.

[0074] Specifically, for example, the control transistor, the voltage-stabilizing transistor, the switching transistor, the first anti-static transistor and the second anti-static transistor can be set in the non-display area, the control signal line, the voltage-stabilizing drive line, the voltage-stabilizing control line, the common signal line and the switching signal line can be set in the non-display area, the sensing signal line can be set in the non-display area and extend to the display area, and the high-potential signal line and the low-potential signal line can be set in the non-display area.

[0075] Specifically, the transistor and signal line arranged on the side of the sensing electrode away from the sensing signal line can be arranged in the non-display area on the upper side of the display panel, and the transistor and signal line arranged between the sensing electrode and the sensing signal line can be arranged in the non-display area on the lower side and the non-display areas on both sides of the display panel.

[0076] Specifically, it can be understood that the embodiments of the present application provide a detailed description of the display panel from the perspective of the design of each electrode, each transistor, and each routing, as well as their connection relationships. It can be understood that when there is no conflict between the embodiments, the embodiments can be combined. For example, the display panel further includes a switching signal line, a common signal line, and a switching transistor, the gate of the switching transistor is connected to the switching signal line, the first electrode of the switching transistor is electrically connected to the sensing electrode, and the second electrode of the switching transistor is connected to the common signal line. When the display panel is configured in the display stage, the switching signal line inputs a valid level, and the display panel further 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 of the sensing electrodes is connected to at least one of the first anti-static transistors and at least one of the second anti-static transistors, the gate of the first anti-static transistor 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 of the second anti-static transistor and the second electrode of the second anti-static transistor are connected to the low-potential signal line, and the first electrode of the second anti-static transistor is connected to the sensing electrode.

[0077] At the same time, an embodiment of the present application provides a display device, which includes the display panel as described in any of the above embodiments.

[0078] Specifically, such as Figure 11 As shown, the display device 2 includes a display panel 1 and a driving chip 21 , and the display panel 1 is connected to the driving chip 21 .

[0079] Specifically, the display device may further include a frame, and the display device may be a mobile phone, a laptop computer, or a car display screen, which is not limited in the embodiments of the present application.

[0080] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0081] The above is a detailed introduction to a display panel and a display device provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display panel, characterized in that: The invention comprises a plurality of sensing electrodes and a plurality of sensing signal lines arranged in an array, each sensing signal line being electrically connected to at least two sensing electrodes, a control transistor and a voltage-stabilizing transistor being provided between each sensing electrode and the corresponding sensing signal line, a gate of the control transistor being connected to the control signal line, a first electrode of the control transistor being connected to the sensing electrode, a second electrode of the control transistor being connected to the sensing signal line, a gate of the voltage-stabilizing transistor being connected to a voltage-stabilizing control line, a first electrode of the voltage-stabilizing transistor being connected to the sensing electrode, and a second electrode of the voltage-stabilizing transistor being connected to a voltage-stabilizing driving line; The gates of the control transistors connected to the sensing electrodes in the same row are connected to the same control signal line, the gates of the control transistors connected to the sensing electrodes in different rows are connected to different control signal lines, and the second electrodes of the control transistors connected to the sensing electrodes in the same row are connected to different sensing signal lines. The gates of the plurality of voltage-stabilizing transistors connected to the plurality of sensing electrodes in the same row are connected to the same voltage-stabilizing control line, and the gates of the plurality of 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 plurality of voltage-stabilizing transistors are all connected to the voltage-stabilizing drive line; The sensing electrodes are configured to input common signals in a display phase, and the sensing electrodes are configured to input sensing signals in a touch phase. When the display panel is configured in the touch phase, one of the control signal lines inputs a valid level, and the other control signal lines input an invalid level. One of the voltage stabilization control lines inputs an invalid level, and the other voltage stabilization control lines input a valid level. The sensing electrode connected to the control transistor connected to the control signal line inputting the valid level is the same as the sensing electrode connected to the voltage stabilization transistor connected to the voltage stabilization control line inputting the invalid level. The voltage stabilization drive line is configured to output a stabilization signal.

2. The display panel according to claim 1, wherein The display panel further includes a switching signal line, a common signal line, and a switching transistor. The gate of the switching transistor is connected to the switching signal line, the first electrode of the switching transistor is electrically connected to the sensing electrode, and the second electrode of the switching transistor is connected to the common signal line. When the display panel is configured in a display stage, the switching signal line inputs a valid level.

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

4. The display panel according to claim 2, wherein: The switch transistor includes a first switch transistor and a second switch transistor. A first switch transistor is provided between each sensing electrode and the corresponding sensing signal line, and a second switch transistor is provided between each sensing signal line and the corresponding plurality of sensing electrodes. The first switch transistor is disposed between the sensing electrode and the voltage-stabilizing transistor, and the second switch transistor is disposed between the control transistor and the sensing signal line.

5. The display panel according to claim 4, wherein: The switch transistor further includes a third switch transistor. The third switch transistor is disposed on a side of the sensing electrode away from the sensing signal line. Each of the sensing electrodes is connected to a first electrode of the third switch transistor.

6. The display panel according to any one of claims 1 to 5, wherein: The display panel further includes an anti-static module, the anti-static module including a first anti-static transistor, a second anti-static transistor, a high-potential signal line, and a low-potential signal line, and each of the sensing electrodes is connected to at least one of the first anti-static transistors and at least one of the second anti-static transistors; The gate of the first anti-static transistor 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 of the second anti-static transistor and the second electrode of the second anti-static transistor are connected to the low-potential signal line, and the first electrode of the second anti-static transistor is connected to the sensing electrode.

7. The display panel according to claim 6, wherein: The anti-static module includes 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.

8. The display panel according to any one of claims 1 to 5, wherein: The plurality of sensing electrodes located in the same row are electrically connected to different sensing signal lines, and the plurality of sensing electrodes located in the same column are electrically connected to the same sensing signal line. The number of sensing electrodes electrically connected to the same sensing signal line is the same as the number of voltage-regulating transistors electrically connected to the same sensing signal line.

9. The display panel according to any one of claims 1 to 5, wherein: The regulated voltage driving line is configured to output a low potential signal; or the regulated voltage driving line is configured to output a pulse signal, and a time period during which the regulated voltage driving line outputs the pulse signal is the same as a time period during which the sensing electrode receives the sensing signal.

10. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 9.

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