Display panel and display device

Abstract

The invention provides a display panel and a display device. The display panel comprises a control circuit and a driving circuit. The control circuit comprises a first selection module, a second selection module and an output module. The input end of the first selection module is electrically connected with a first signal line, the input end of the second selection module is electrically connected with a second signal line, and the output end of the first selection module and the output end of the second selection module are electrically connected with the input end of the output module; the output end of the output module and the data signal line are electrically connected to the input end of the driving circuit. The voltage of an electric signal transmitted by the first signal line is V1, the voltage of an electric signal transmitted by the second signal line is V2, the voltage of an electric signal transmitted by the data signal line is V0, and V0-V2 is smaller than V0-V1. Wherein in the touch control stage, the second selection module is turned on, and the first selection module is turned off. According to the invention, the input end of the output module can be charged with the electric signal transmitted by the second signal line, so that the potential difference between the two ends of the output module is relatively small in the touch control stage, and the formed leakage current is relatively weak.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a display panel and display device. Background Technology

[0002] In the manufacturing process of existing display panels, in order to detect the display status of each area in the display panel, it is usually necessary to set up a detection circuit to drive the pixels in the display panel (non-finished product) to emit light, and to determine the location of the fault by checking the light emission status of each pixel.

[0003] However, even after the display panel is manufactured, the aforementioned detection circuit remains. Furthermore, during the display process, some transistors in the detection circuit are difficult to completely turn off, which can easily lead to data signal lines becoming electrically connected to other signal lines through the detection circuit. This can cause abnormalities in the data signals transmitted by the data signal lines. For example, if some transistors in the detection circuit experience a threshold voltage shift, even if those transistors are turned off, data signals can still be transmitted to some signal lines via those transistors, interfering with the original signal transmission process of the data signal line and causing abnormal fluctuations in the signal transmission. Considering the coupling between the data signal lines and the touch signal lines, these abnormal fluctuations can further interfere with the signal transmission process of the touch signal lines, thus affecting the touch function. In addition, these abnormal fluctuations can also occur during the display stage, affecting the display function. Summary of the Invention

[0004] In view of this, this application provides a display panel and display device to solve the problem of leakage current at the detection circuit interfering with the panel's operating state.

[0005] In a first aspect, this application provides a display panel, including a control circuit and a drive circuit.

[0006] The control circuit includes a first selection module, a second selection module, and an output module. The input terminal of the first selection module is electrically connected to a first signal line, the input terminal of the second selection module is electrically connected to a second signal line, and the output terminals of both the first and second selection modules are electrically connected to the input terminal of the output module. The output terminal of the output module is electrically connected to the input terminal of the drive circuit via a data signal line.

[0007] The voltage of the electrical signal transmitted by the first signal line is V1, the voltage of the electrical signal transmitted by the second signal line is V2, and the voltage of the electrical signal transmitted by the data signal line is V0, where |V0-V2| < |V0-V1|.

[0008] During the touch phase, the second selection module is turned on and the first selection module is turned off.

[0009] Based on the same inventive concept, this application also provides a display device, including the above-mentioned display panel.

[0010] Compared with the prior art, the display module and display device provided by the present invention achieve at least the following beneficial effects: When the second selection module is on and the first selection module is off, the input terminal of the output module can be charged with the electrical signal transmitted by the second signal line. Considering that |V0-V2| < |V0-V1|, during the touch phase, the potential difference between the two ends of the output module is relatively small, resulting in a weak leakage current. At this time, the interference of leakage current on the data signal is also weak, which can reduce the impact of data signal fluctuations on the touch signal (caused by the coupling between the data signal line and the touch signal line) and maintain good touch function. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of a portion of the structure of a display panel in related technologies; Figure 2 for Figure 1 The circuit diagram of some of the structures included in the display panel shown is shown. Figure 3 A schematic diagram of a partial structure of a display panel provided in this application; Figure 4 for Figure 3 A circuit diagram of a portion of the display panel structure is shown. Figure 5 A timing diagram of the electrical signals transmitted by some signal lines in the display panel; Figure 6 A circuit diagram illustrating a partial structure of a display panel provided in this application; Figure 7 A schematic diagram of a partial structure of a display panel provided in this application; Figure 8 A schematic diagram of a partial structure of a display panel provided in this application; Figure 9 A schematic diagram of a partial structure of a display panel provided in this application; Figure 10 for Figure 9 A cross-sectional view of a portion of the display panel structure along section line AA'. Figure 11This is a schematic diagram of a display device provided in this application. Detailed Implementation

[0013] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0014] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0015] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0016] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0017] Figure 1 This is a schematic diagram of a portion of the structure of a display panel in related technologies. Figure 2 for Figure 1 The diagram shows a circuit diagram of some of the structures included in the display panel. For ease of understanding, Figure 2 The diagram illustrates the connection relationships between the structural components of an existing display panel during testing.

[0018] In existing technologies, combined Figure 1 and Figure 2 To inspect the existing display panel 10' (e.g., to detect display faults and determine their location), a detection module 01' is typically provided. During inspection, the detection module 01' is activated and outputs a driving voltage to the driving module 02'. The driving module 02' can further output this driving voltage to the driving electrode 03' (which can be a pixel electrode). The driving electrode 03' then works with the common electrode 04' to form an electric field, thereby controlling the deflection of the liquid crystal 05' and realizing the display process. At this time, the detection module 01' can be used to ensure that all pixels in the existing display panel 10' participate in the display. Therefore, based on the display status of each area on the existing display panel 10', it can be determined whether a display fault exists and the location of the fault can be determined.

[0019] It is important to note that when the existing display panel 10' is in the finished product stage, the driving module 02' can receive the electrical signals provided by the chip IC through the control transistor 06', thereby realizing the display. To avoid affecting the working state of the existing display panel 10', the detection module 01' needs to be kept off. A common solution is to connect a low-level signal VGL to the input terminal of the detection transistor 011'. Considering that the control signal VTSW received by the control terminal of the detection transistor 011' is similar in magnitude to the low-level signal VGL, theoretically, the detection transistor 011' can be in the off state. However, the detection transistor 011' inevitably suffers from threshold voltage offset, causing it to remain in a "slightly on" state even when its input terminal receives the low-level signal VGL, making it difficult to completely turn off. Considering that the output of the detection module 01' and the data signal line DL are both electrically connected to the output of the drive module 02', when the detection transistor 011' is in the aforementioned "micro-on" state, due to the potential difference between the low-level signal VGL and the data signal transmitted by the data signal line DL, leakage current is likely to occur between the input of the detection module 01' and the data signal line DL. For example, when the voltage of the data signal transmitted by the data signal line DL is much greater than the voltage of the low-level signal VGL, leakage current is likely to flow from the data signal line DL to the low-level signal line (the signal line that transmits the aforementioned low-level signal VGL). The presence of this leakage current can affect the data signal transmitted by the data signal line DL, easily causing functional abnormalities in the existing display panel 10'. For example, when the aforementioned leakage current occurs, part of the signal voltage transmitted by the data signal line DL is divided to the aforementioned low-level signal line, thereby causing abnormalities in the signal transmitted by the data signal line DL. Considering that in the actual wiring, the data signal line DL is coupled to some touch signal lines in the panel, the touch signal transmitted by the aforementioned touch signal lines can also experience signal abnormalities, thereby affecting the touch function. Furthermore, when the aforementioned leakage current is severe, the display status of the display panel 10' is also easily affected.

[0020] Figure 3 This is a schematic diagram of a partial structure of a display panel provided in this application. Figure 4 for Figure 3 The diagram shows a partial circuit representation of the display panel structure. For ease of understanding, Figure 4 The diagram illustrates the connection relationships between the structural components of an existing display panel during testing.

[0021] To address the aforementioned problems, this application provides a display panel 10, combined with... Figure 3 and Figure 4 The display panel 10 includes a control circuit 01 and a drive circuit 02.

[0022] The output of the control circuit 01 can be electrically connected to the input of the drive circuit 02, and the control circuit 01 can be used for fault detection during the manufacturing process of the display panel 10. For example, in the pre-finished stage of the display panel 10, the control circuit 01 can provide a driving voltage to the drive circuit 02, which can then transmit the driving voltage to the first electrode 03 (which can be a pixel electrode). A control electric field can then be generated between the first electrode 03 and the second electrode 04 to control the deflection of the liquid crystal a, thereby achieving display. At this time, the presence of a display fault can be determined based on the display status of each area of ​​the display panel 10. If a fault exists, the location of the fault can be further determined.

[0023] In addition, the input terminal of the driving circuit 02 is electrically connected to the data signal line D1. During the display stage, the driving circuit 02 can receive the electrical signal transmitted by the data signal line D1, and the driving circuit 02 can transmit the received electrical signal to the first electrode 03 to realize the display.

[0024] The control circuit 01 includes a first selection module 11, a second selection module 12, and an output module 1t. The input terminal of the first selection module 11 is electrically connected to a first signal line L1, and the input terminal of the second selection module 12 is electrically connected to a second signal line L2. The output terminals of both the first and second selection modules are electrically connected to the input terminal of the output module 1t. When the first selection module 11 is activated, the electrical signal transmitted through the first signal line L1 can be input to the output module 1t; when the second selection module 12 is activated, the electrical signal transmitted through the second signal line L2 can be input to the output module 1t. The first selection module 11 and the second selection module 12 can be activated at different times; that is, at any given moment, only one of the electrical signals transmitted through the first signal line L1 or the second signal line L2 can be input to the output module 1t.

[0025] The output terminal of the output module 1t is electrically connected to the input terminal of the drive circuit 02 via the data signal line D1. Therefore, the data signal transmitted by the data signal line D1 can fill the node where the output terminal of the output module 1t is electrically connected to the input terminal of the drive circuit 02.

[0026] like Figure 4 As shown, the control terminal of the first selection module 11 can be electrically connected to the first control line S1, the control terminal of the second selection module 12 can be electrically connected to the second control line S2, and the control terminal of the output module 1t can be electrically connected to the third control line S3. It should be noted that the transistors in the control circuit 01 can all be N-type transistors.

[0027] The voltage of the electrical signal transmitted by the first signal line L1 is V1, the voltage of the electrical signal transmitted by the second signal line L2 is V2, and the voltage of the electrical signal transmitted by the data signal line D1 is V0, where |V0-V2| < |V0-V1|. It should be noted that if the transistor corresponding to the output module 1t experiences a threshold voltage shift, then in the finished product stage of the display panel 10, the output module 1t may still be difficult to completely turn off (corresponding to the aforementioned slightly on state), meaning that leakage current may exist between the input and output terminals of the output module 1t. In this case, reducing the leakage current can include reducing the potential difference between the input and output terminals of the output module 1t. Therefore, in this embodiment, connecting the second signal line L2 to the input terminal of the output module 1t via the second selection module 12 helps to ensure that the voltage difference between the input and output terminals of the output module 1t (hereinafter referred to as the potential difference) is |V0-V2| when the second selection module 12 is on. Compared to the case where the first selection module 11 is turned on, the potential difference between the two ends when the second selection module 12 is turned on can be considered to be reduced. Correspondingly, the leakage current through the output module 1t is also reduced, which helps to reduce the interference on the data signal.

[0028] Figure 5 This is a timing diagram of the electrical signals transmitted by some signal lines in the display panel.

[0029] Among them, combined Figure 4 and Figure 5 During the touch phase (TP), the second selection module 12 is turned on and the first selection module 11 is turned off. At this time, the first control line S1 can transmit a low-level signal, and the second control line S2 can transmit a high-level signal. It should be noted that, to meet the requirements of the touch function, the voltage of the low-level signal transmitted by the first control line S1 during the touch phase (TP) fluctuates periodically, and the voltage of the high-level signal transmitted by the second control line S2 during the touch phase (TP) also fluctuates periodically.

[0030] In this embodiment, when the second selection module 12 is on and the first selection module 11 is off, the input terminal of the output module 1t can be charged with the electrical signal transmitted by the second signal line L2. Considering |V0-V2| < |V0-V1|, and in conjunction with the above reasons, compared to the case where the first selection module 11 is on and the second selection module 12 is off, the potential difference between the two ends of the output module 1t is relatively small during the touch phase TP, and the leakage current that can be formed at the output module 1t is weaker. Therefore, the weaker leakage current also has a weaker interference with the data signal, that is, this design can reduce the fluctuation of the data signal, which is beneficial to weakening the influence on the touch signal (caused by the coupling between the data signal line D1 and the touch signal line) and maintaining good touch function.

[0031] like Figure 3 As shown, the input terminal of the drive circuit 02 can also be electrically connected to the input module M. In the finished product stage, the drive circuit 02 can receive the drive voltage provided by the chip 20 through the input module M, and further transmit the drive voltage to the first electrode 03.

[0032] In one embodiment of this application, combined with Figure 4 and Figure 5 During the display phase, the first signal line L1 transmits a constant voltage signal via DP, while the second signal line L2 transmits a fixed voltage signal via DP. It should be noted that, to meet the requirements of the touch function, the voltage of the signal transmitted by the first signal line L1 via TP during the touch phase can exhibit periodic fluctuations, and the voltage of the signal transmitted by the second signal line L2 via TP during the touch phase can also exhibit periodic fluctuations.

[0033] In this embodiment of the application, in addition to controlling the potential difference between the two ends of the output module 1t, the electrical signal transmitted by the second signal line L2 can also participate in the display process. For example, the second signal line L2 can transmit an electrical signal from DP to the second electrode 04 during the display stage. At this time, the second signal line L2 can transmit a fixed voltage signal from DP during the display stage to avoid interference to the display caused by signal potential fluctuations.

[0034] Furthermore, during the display phase (DP), the third control line S3 can continuously transmit a low-level signal; while during the touch phase (TP), the voltage of the signal transmitted by the third control line S3 can fluctuate periodically to meet the requirements of the touch function.

[0035] In one embodiment of this application, the first signal line L1 transmits a low-level signal during the display phase DP, and thus the first signal line L1 can be a multiplexed low-level signal line (VGL). If the third control line S3 continuously transmits a low-level signal during the display phase DP, when the first selection module 11 is turned on, the input terminal of the control output module 1t can receive the low-level signal transmitted by the first signal line L1. At this time, the voltage difference between the electrical signal received by the control terminal of the control output module 1t (provided by the third control line S3) and the electrical signal received by the input terminal of the control output module 1t (provided by the first signal line L1) can be small. That is, in this embodiment of the application, the gate-source voltage difference corresponding to the transistor in the control output module 1t can be small, which is beneficial to ensure that the transistor does not meet the turn-on condition, and helps the output module 1t to remain in the off state as much as possible, thereby reducing leakage current and improving the impact on the touch function.

[0036] Figure 6 This is a circuit diagram illustrating a partial structure of a display panel provided in this application.

[0037] In one embodiment of this application, such as Figure 6As shown, the display panel 10 also includes a liquid crystal layer 05 and a first electrode 03 and a second electrode 04 disposed opposite to each other, with the first electrode 03 and the second electrode 04 located on the same side of the liquid crystal layer 05. During the display phase DP, the first electrode 03 and the second electrode 04 can receive different electrical signals respectively, thereby generating a control electric field between them, which in turn controls the deflection of the liquid crystal a in the liquid crystal layer 05. The second electrodes 04 opposite to the plurality of first electrodes 03 can be a single structure, i.e., the second electrodes 04 can be a common electrode.

[0038] The first electrode 03 is electrically connected to the output terminal of the driving circuit 02, so the electrical signal received by the first electrode 03 can be the driving voltage output by the driving circuit 02; the second signal line L2 transmits electrical signals to the second electrode 04 and the second selection module 12 respectively, so the second signal line L2 can include a branching structure, and the two ends of the branching structure can be electrically connected to the second electrode 04 and the second selection module 12 respectively.

[0039] In this embodiment, the second electrode 04 receives the electrical signal transmitted by the second signal line L2, which means that the second signal line L2 can be split into two lines, so that the second signal line L2 can be electrically connected to the input terminal of the second selection module 12 or to the second electrode 04, which helps to simplify the fabrication process.

[0040] In one embodiment of this application, combined with Figure 4 and Figure 5 During the display phase DP, the first selection module 11 is turned on and the second selection module 12 is turned off.

[0041] In this embodiment, during the display phase DP, the first signal line L1 can be considered as replacing the second signal line L2 in transmitting electrical signals to the input terminal of the output module 1t, thus avoiding abnormal display conditions. This is because the second electrode 04 can be electrically connected to the same second signal line L2 as the second selection module 12. If the second selection module 12 is enabled during the display phase DP, the input terminal of the output module 1t and the second electrode 04 can share the voltage of the second signal line L2. In this case, the scheme of maintaining a small potential difference between the two ends using the electrical signal transmitted by the second signal line L2 is prone to interfering with the electrical signal received by the second electrode 04, thereby causing abnormal display conditions. Therefore, the scheme of enabling the first selection module 11 and disabling the second selection module 12 in this embodiment avoids the aforementioned problems.

[0042] Figure 7 This is a schematic diagram of a partial structure of a display panel provided in this application.

[0043] In one embodiment of this application, such as Figure 7As shown, the control circuit 01 includes multiple output modules 1t. In the same control circuit 01, the input terminals of all output modules 1t are connected in parallel to the first node N1, and the output terminals of the first selection module 11 and the second selection module 12 are electrically connected to the first node N1. That is, in the same control circuit 01, the input terminals of all output modules 1t can receive the same electrical signal. Furthermore, the control terminals of all output modules 1t in the same control circuit 01 can be electrically connected to the same third control line S3.

[0044] The display panel 10 also includes multiple sets of driving circuit groups 2a, each of which includes multiple driving circuits 02. All driving circuits 02 in the same driving circuit group 2a are electrically connected to the same output module 1t.

[0045] The configuration method in this embodiment helps to simplify the wiring in the panel and reduce the manufacturing difficulty while reducing leakage current.

[0046] Figure 8 This is a schematic diagram of a partial structure of a display panel provided in this application.

[0047] In one embodiment of this application, such as Figure 8 As shown, the output terminals of the first selection module 11 and the second selection module 12 are electrically connected to the first node N1.

[0048] The control circuit 01 also includes a third selection module 13 and a fourth selection module 14, which can be activated at different times. The input terminal of the third selection module 13 is electrically connected to the third signal line L3, and the input terminal of the fourth selection module 14 is electrically connected to the fourth signal line L4. The output terminals of the third selection module 13 and the fourth selection module 14 are electrically connected to the second node N2. It should be noted that there may be no electrical connection path between the first node N1 and the second node N2.

[0049] The voltage of the electrical signal transmitted by the third signal line L3 is V3, and the voltage of the electrical signal transmitted by the fourth signal line L4 is V4, where |V0-V4| < |V0-V3|. During the touch phase TP, the fourth selection module 14 is turned on and the third selection module 13 is turned off.

[0050] The control circuit 01 includes multiple output modules 1t. Within the same control circuit 01, the input terminals of multiple output modules 1t are connected in parallel to the first node N1, and the input terminals of multiple output modules 1t are connected in parallel to the second node N2.

[0051] In this embodiment, the fourth selection module 14 is turned on and the third selection module 13 is turned off, allowing the second node N2 to receive the electrical signal transmitted by the fourth signal line L4. Considering that |V0-V4| < |V0-V3|, during the touch phase, the potential difference between the two ends of the output module 1t electrically connected to the second node N2 is relatively small, resulting in a weak leakage current. Consequently, the interference from the leakage current on the data signal is also weaker, thus reducing the impact of data signal fluctuations on the touch signal (caused by the coupling between the data signal line D1 and the touch signal line), maintaining good touch functionality. Furthermore, in this embodiment, multiple selection modules in the same control circuit 01 are divided into two groups, which also allows multiple output modules 1t and their corresponding drive circuit groups 2a to be divided into two groups accordingly. This helps to differentiate the potential difference between the two ends of different output modules 1t, and is beneficial for specifically improving the abnormal touch performance caused by leakage current.

[0052] In one embodiment of this application, such as Figure 4 As shown, the display panel 10 also includes a liquid crystal layer 05 and a first electrode 03 and a second electrode 04 disposed opposite to each other. The first electrode 03 and the second electrode 04 are located on the same side of the liquid crystal layer 05. The first electrode 03 is electrically connected to the output terminal of the driving circuit 02, so the first electrode 03 can participate in controlling the deflection of the liquid crystal a in the liquid crystal layer 05 according to the driving voltage it receives.

[0053] like Figure 8 As shown, the multiple output modules 1t include a first type of output module 1t1 and a second type of output module 1t2. In the same control circuit 01, the input terminals of all first type of output modules 1t1 are connected in parallel to the first node N1, and the input terminals of all second type of output modules 1t2 are connected in parallel to the second node N2.

[0054] The display panel 10 also includes multiple sets of driving circuit groups 2a, each of which includes multiple driving circuits 02. All driving circuits 02 in the same driving circuit group 2a are electrically connected to the same output module 1t.

[0055] The multiple driving circuit groups 2a include a first circuit group 2a1 and a second circuit group 2a2, which can be arranged alternately along a first direction X. In the first circuit group 2a1, the voltage of the first electrode 03 electrically connected to the output terminal of the driving circuit 02 is greater than the voltage of the second electrode 04. In this case, the direction of the control electric field in the portion of the liquid crystal layer 05 corresponding to the first electrode 03 can be from the first electrode 03 to the second electrode 04. In the second circuit group 2a2, the voltage of the first electrode 03 electrically connected to the output terminal of the driving circuit 02 is less than the voltage of the second electrode 04. In this case, the direction of the control electric field in the portion of the liquid crystal layer 05 corresponding to the first electrode 03 can be from the second electrode 04 to the first electrode 03.

[0056] The first type of output module 1t1 is electrically connected to the drive circuit 02 in the first circuit group 2a1, and the second type of output module 1t2 is electrically connected to the drive circuit in the second circuit group 2a2.

[0057] In this embodiment, considering that the first circuit group 2a1 and the second circuit group 2a2 are arranged alternately along the first direction X, the arrangement of this embodiment helps to realize that the deflection direction of the liquid crystal a corresponding to the driving circuit 02 in the first circuit group 2a1 and the driving circuit 02 in the second circuit group 2a2 can be different, which helps to avoid the liquid crystal a deflecting in a single direction for too long and thus affecting the display effect.

[0058] In one embodiment of this application, the first signal line L1 and the third signal line L3 transmit the same electrical signals. In this case, the first signal line L1 and the third signal line L3 can both be low-level signal lines. Therefore, the arrangement of this embodiment is beneficial to reduce wiring difficulty and manufacturing cost while reducing leakage current by utilizing the above design.

[0059] Figure 9 This is a schematic diagram of a partial structure of a display panel provided in this application.

[0060] In one embodiment of this application, such as Figure 9 As shown, the display panel 10 also includes a touch electrode 06 and a touch driving line T1. The touch electrode 06 receives the driving signal provided by the chip through the touch driving line T1.

[0061] The display panel 10 also includes a plurality of pixel columns P arranged along the first direction X, wherein the pixel columns P include a plurality of pixels Pa arranged along the second direction Y, and the first direction X and the second direction Y intersect.

[0062] The touch driving line T1 and the data signal line D1 are set on the same layer, and the touch driving line T1 and the data signal line D1 are located between two adjacent pixel columns P.

[0063] In this embodiment, setting the touch driving line T1 and the data signal line D1 on the same layer can simplify the manufacturing process and save costs; in addition, setting the touch driving line T1 and the data signal line D1 between two pixel columns P helps to save wiring space.

[0064] Figure 10 for Figure 9 The diagram shows a partial cross-sectional view of the display panel along section line AA'.

[0065] In one embodiment of this application, combined with Figure 9 and Figure 10 The display panel 10 also includes a liquid crystal layer 05 and a first electrode 03 and a second electrode 04 disposed opposite to each other, with the first electrode 03 and the second electrode 04 located on the same side of the liquid crystal layer 05. The first electrode 03 is electrically connected to the output terminal of the driving circuit 02, so the first electrode 03 and the second electrode 04 can participate in controlling the deflection process of liquid crystal a in the liquid crystal layer 05.

[0066] Among them, the second electrode 04 is reused as the touch electrode 06.

[0067] In this embodiment of the application, it is known that the touch function and display function of the display panel 10 can be implemented in different time periods. Therefore, the second electrode 04 is reused as the touch electrode 06, so that the second electrode 04 can be used to control the deflection of the liquid crystal a and to detect touch behavior.

[0068] It is important to note that, in combination Figure 9 and Figure 10 In this application, the second electrode 04 may be located on the side of the first electrode 03 near the liquid crystal layer 05 for illustration; correspondingly, the first electrode 03 may also be located on the side of the second electrode 04 near the liquid crystal layer 05, and this application does not limit this.

[0069] Figure 11 This is a schematic diagram of a display device provided in this application.

[0070] This application provides a display device 30, such as... Figure 11 As shown, the display device 30 includes the aforementioned display panel 10. The display device 30 can be a mobile phone, or it can also be an electronic device such as a computer or television.

[0071] The phenomenon of abnormal touch function caused by leakage current corresponding to the output module 1t in the display device 30 provided in this application embodiment has been greatly suppressed.

[0072] The same or similar parts between the various embodiments in this specification can be referred to mutually. In particular, the device embodiments and terminal embodiments are basically similar to the method embodiments, so the description is relatively simple, and the relevant parts can be referred to the description in the method embodiments.

Claims

1. A display panel, characterized in that, Includes control circuits and drive circuits; The control circuit includes a first selection module, a second selection module, and an output module; the input terminal of the first selection module is electrically connected to a first signal line, the input terminal of the second selection module is electrically connected to a second signal line, and the output terminals of both the first and second selection modules are electrically connected to the input terminal of the output module; the output terminal of the output module is electrically connected to the input terminal of the drive circuit via a data signal line. The voltage of the electrical signal transmitted by the first signal line is V1, the voltage of the electrical signal transmitted by the second signal line is V2, and the voltage of the electrical signal transmitted by the data signal line is V0, |V0-V2|<|V0-V1|; During the touch phase, the second selection module is turned on and the first selection module is turned off.

2. The display panel according to claim 1, characterized in that, The first signal line transmits a constant voltage signal during the display phase, and the second signal line transmits a fixed voltage signal during the display phase.

3. The display panel according to claim 2, characterized in that, The first signal line transmits a low-level signal during the display phase.

4. The display panel according to claim 1, characterized in that, The display panel further includes a liquid crystal layer and a first electrode and a second electrode disposed opposite to each other, the first electrode and the second electrode being located on the same side of the liquid crystal layer; the first electrode is electrically connected to the output terminal of the driving circuit, and the second signal line transmits electrical signals to the second electrode and the second selection module respectively.

5. The display panel according to claim 1, characterized in that, During the display phase, the first selection module is enabled and the second selection module is disabled.

6. The display panel according to claim 1, characterized in that, The control circuit includes multiple output modules; in the same control circuit, the input terminals of all the output modules are connected in parallel to the first node, and the output terminals of the first selection module and the second selection module are electrically connected to the first node. The display panel further includes multiple sets of driving circuit groups, each set containing multiple driving circuits. Each driving circuit in the same set is electrically connected to the same output module.

7. The display panel according to claim 1, characterized in that, The output terminals of the first selection module and the second selection module are electrically connected to the first node; The control circuit also includes a third selection module and a fourth selection module. The input terminal of the third selection module is electrically connected to a third signal line, and the input terminal of the fourth selection module is electrically connected to a fourth signal line. The output terminals of the third selection module and the fourth selection module are electrically connected to a second node. The voltage of the electrical signal transmitted by the third signal line is V3, and the voltage of the electrical signal transmitted by the fourth signal line is V4, |V0-V4|<|V0-V3|; during the touch phase, the fourth selection module is turned on and the third selection module is turned off. The control circuit includes multiple output modules; within the same control circuit, the input terminals of multiple output modules are connected in parallel to the first node, and the input terminals of multiple output modules are connected in parallel to the second node.

8. The display panel according to claim 7, characterized in that, The display panel further includes a liquid crystal layer and a first electrode and a second electrode disposed opposite to each other, the first electrode and the second electrode being located on the same side of the liquid crystal layer; the first electrode is electrically connected to the output terminal of the driving circuit. The plurality of output modules includes a first type of output module and a second type of output module; in the same control circuit, the input terminals of all first type of output modules are connected in parallel to the first node, and the input terminals of all second type of output modules are connected in parallel to the second node; The display panel also includes multiple sets of driving circuit groups, each set of driving circuit groups includes multiple driving circuits, and each driving circuit in the same set of driving circuit groups is electrically connected to the same output module. The multiple driving circuit groups include a first circuit group and a second circuit group; in the first circuit group, the voltage of the first electrode electrically connected to the output terminal of the driving circuit is greater than the voltage of the second electrode; in the second circuit group, the voltage of the first electrode electrically connected to the output terminal of the driving circuit is less than the voltage of the second electrode. The first type of output module is electrically connected to the driving circuit in the first circuit group, and the second type of output module is electrically connected to the driving circuit in the second circuit group.

9. The display panel according to claim 7, characterized in that, The first signal line and the third signal line transmit the same electrical signal, respectively.

10. The display panel according to claim 1, characterized in that, The display panel also includes touch electrodes and touch driving lines, wherein the touch electrodes receive driving signals provided by the chip through the touch driving lines; The display panel further includes a plurality of pixel columns arranged along a first direction, wherein the pixel columns include a plurality of pixels arranged along a second direction, and the first direction and the second direction intersect. The touch driving line and the data signal line are arranged on the same layer, and the touch driving line and the data signal line are located between two adjacent pixel columns.

11. The display panel according to claim 10, characterized in that, The display panel further includes a liquid crystal layer and a first electrode and a second electrode disposed opposite to each other, the first electrode and the second electrode being located on the same side of the liquid crystal layer; the first electrode is electrically connected to the output terminal of the driving circuit. The second electrode is reused as the touch electrode.

12. A display device, characterized in that, Includes the display panel as described in any one of claims 1-11.

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