Driving circuit, array substrate and display device

Abstract

The present invention provides a driving circuit, an array substrate and a display device, wherein the driving circuit includes a driving module, a signal transmission module, a grounding module, a unidirectional gating module and an electrostatic charging and discharging module, wherein the signal transmission module is electrically connected to the driving module and is used to transmit a driving signal to the driving module, the grounding module is grounded, the unidirectional gating module is connected in series with the signal transmission module and is used to selectively turn on when its turn-on voltage is less than or equal to the voltage of the signal transmission module, or to turn off when its turn-on voltage is greater than the voltage of the signal transmission module, and the turn-on voltage of the unidirectional gating module is greater than the turn-on voltage of the driving module; the electrostatic charging and discharging module is connected in series with the unidirectional gating module and is electrically connected to the grounding module and is used to store charges and release the stored charges to the grounding module. The driving circuit, array substrate and display device provided by the present invention can prevent the driving circuit from being broken down and burned by static electricity, improve the stability of the panel, and reduce the border width of the panel.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a driving circuit, an array substrate and a display device. Background Art

[0002] During the manufacturing process of the display panel (Panel), due to the contact and friction between the panel and other devices, static electricity will accumulate in areas with high metal density on the panel, such as the gate driver on array (GOA) circuit of the array substrate, and because there are few interfaces between the start vertical input (STV In) signal line of the GOA circuit and the GOA unit of the GOA circuit, the static electricity accumulated on the STV In signal line can only be exported to the GOA unit through the few interfaces between it and the GOA unit, which may cause the first few lines of the GOA circuit to be broken down and burned, resulting in poor display of the panel. An existing STV In signal line of the GOA circuit is connected to an electrostatic discharge (ESD) module, but since the panel is not connected to an external circuit when the front section of the panel is manufactured, the electrostatic discharge module cannot fully discharge static electricity through the external circuit, so the protection ability of the electrostatic discharge module is weak, and several lines of the GOA circuit will still be broken down and burned, resulting in poor display of the panel.

[0003] In addition, during the panel manufacturing process, static electricity may also be introduced into the panel from the outside through the ground (GND) signal line at the outermost edge of the panel, causing, for example, breakdown of the static electricity release module and the drive circuit. Conventional designs usually round the corners of the panel to reduce the tip effect, and use sealing glue to cover the ground signal line to reduce the probability of external static electricity being introduced into the panel. However, covering the ground signal line with sealing glue will occupy the frame, which is not conducive to the design of the ultra-narrow frame of the monitor (Monitor, MNT). Moreover, this design cannot completely avoid the problem of external static electricity being introduced into the panel. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art, and proposes a driving circuit, an array substrate and a display device, which can prevent the driving circuit from being broken down and burned by static electricity, improve the stability of the panel, and reduce the border width of the panel.

[0005] To achieve the above-mentioned object, the present invention provides a driving circuit, comprising a driving module, a signal transmission module and a grounding module, wherein the signal transmission module is electrically connected to the driving module and is used to transmit a driving signal to the driving module, and the grounding module is used to be grounded, and the driving circuit also comprises a unidirectional gating module and an electrostatic charging and discharging module, the unidirectional gating module is connected in series with the signal transmission module, the unidirectional gating module is used to selectively turn on when its turn-on voltage is less than or equal to the voltage of the signal transmission module, or turn off when its turn-on voltage is greater than the voltage of the signal transmission module, and the turn-on voltage of the unidirectional gating module is greater than the turn-on voltage of the driving module;

[0006] The electrostatic charging and discharging module is connected in series with the unidirectional gating module and is electrically connected to the grounding module. The electrostatic charging and discharging module is used to store charges and release the stored charges to the grounding module.

[0007] Preferably, the unidirectional gating module includes a diode element, an input pole of the diode element is electrically connected to the signal transmission module, and an output pole is electrically connected to the electrostatic charging and discharging module.

[0008] Preferably, the diode element comprises a thin film transistor, one of the source and the drain of the thin film transistor serves as the output electrode, and the other is electrically connected to the gate electrode as the input electrode.

[0009] Preferably, the electrostatic charging and discharging module comprises a capacitor element, a first electrode of the capacitor element is electrically connected to the unidirectional gating module, and a second electrode of the capacitor element is electrically connected to the grounding module.

[0010] Preferably, the capacitor element includes a first conductive layer, an insulating layer and a second conductive layer, the insulating layer is formed on the first conductive layer, the second conductive layer is formed on the insulating layer, one of the first conductive layer and the second conductive layer serves as the first electrode, and the other serves as the second electrode.

[0011] Preferably, the first conductive layer is a source-drain metal film layer, the insulating layer is a silicon nitride film layer, and the second conductive layer is an indium tin oxide film layer.

[0012] Preferably, the electrostatic charging and discharging module further includes a resistor element, one end of the resistor element is electrically connected to the capacitor element, and the other end is electrically connected to the grounding module, and the resistor element is used to transfer the charge released by the capacitor element to the grounding module.

[0013] Preferably, the resistor element comprises an indium tin oxide film layer.

[0014] Preferably, there are multiple driving modules, signal transmission modules and unidirectional gating modules, and the multiple signal transmission modules are electrically connected to the multiple driving modules in a one-to-one correspondence. Each of the signal transmission modules is used to transmit a driving signal to the corresponding driving module. The multiple unidirectional gating modules are connected in series with the multiple signal transmission modules in a one-to-one correspondence, and are all connected in series with the electrostatic charging and discharging module. Each of the unidirectional gating modules is used to selectively turn on when its turn-on voltage is less than or equal to the voltage of the corresponding signal transmission module, or turn off when its turn-on voltage is greater than the voltage of the corresponding signal transmission module, and the turn-on voltage of each of the unidirectional gating modules is greater than the turn-on voltage of the corresponding driving module.

[0015] Preferably, the driving circuit includes an array substrate row driving circuit, the array substrate row driving circuit includes a plurality of cascaded shift registers, the driving module includes a first-stage shift register among the plurality of cascaded shift registers, and the signal transmission module includes a row driving start input signal line, the row driving start input signal line is electrically connected to the input end of the first-stage shift register, and is used to transmit a start driving signal to the first-stage shift register.

[0016] The present invention also provides an array substrate, comprising the driving circuit provided by the present invention.

[0017] The present invention further provides a display device, comprising an array substrate and a color film substrate arranged in a box, wherein the array substrate adopts the array substrate provided by the present invention.

[0018] The present invention has the following beneficial effects:

[0019] The driving circuit provided by the present invention connects a unidirectional gating module in series with a signal transmission module, and connects an electrostatic charging and discharging module in series with the unidirectional gating module and grounds the unidirectional gating module. Since the unidirectional gating module can selectively be turned on when its turn-on voltage is less than or equal to the voltage of the signal transmission module, the electrostatic charging and discharging module can store the charge and release the stored charge to the grounding module. Therefore, when the voltage of the signal transmission module is greater than or equal to the turn-on voltage of the unidirectional gating module due to the accumulation of static electricity, the unidirectional gating module will be turned on, so that the signal transmission module is electrically connected to the electrostatic charging and discharging module through the unidirectional gating module, so that the electrostatic charge accumulated in the signal transmission module can be exported to the electrostatic charging and discharging module through the unidirectional gating module, and the electrostatic charging and discharging module will store and release the electrostatic charge exported by the unidirectional gating module to the grounding module, thereby avoiding the electrostatic charge from being introduced into the driving module electrically connected to the signal transmission module. This can prevent the driving circuit from being broken down and burned by static electricity, improve the stability of the panel, and when external static electricity is introduced into the driving circuit through the grounding module, the static electricity charge introduced from the outside can be stored and released to the grounding module with the help of the static electricity charging and discharging module, so that there is no need to use sealing glue to cover the grounding module, thereby preventing external static electricity charge from being introduced into the driving module, and then preventing the driving circuit from being broken down and burned by static electricity, thereby improving the stability of the panel and reducing the border width of the panel. In addition, since the unidirectional selection module can be selectively turned off when its start-up voltage is greater than the voltage of the signal transmission module, and the start-up voltage of the unidirectional selection module is greater than the start-up voltage of the driving module, therefore, when the signal transmission module transmits a normal driving signal to the driving module, the unidirectional selection module will be in an off state, so that the normal driving signal can be transmitted to the driving module, so that the driving circuit can work normally.

[0020] The array substrate provided by the present invention can avoid the driving circuit being broken down and burned by static electricity by means of the driving circuit provided by the present invention, thereby improving the stability of the panel and reducing the frame width of the panel.

[0021] The display device provided by the present invention can prevent the driving circuit from being broken down and burned by static electricity by means of the array substrate provided by the present invention, thereby improving the stability of the panel and reducing the frame width of the panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of a driving circuit provided by an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the local structure of the lower left corner of the driving circuit and the array substrate provided by an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of the local structure of the lower right corner of the driving circuit and the array substrate provided by an embodiment of the present invention;

[0025] Figure 4 for Figure 2 A schematic diagram of the enlarged structure of the electrostatic charging and discharging module;

[0026] Figure 5 for Figure 3 A schematic diagram of the enlarged structure of the electrostatic charging and discharging module;

[0027] Figure 6 for Figure 2 A schematic diagram of the enlarged structure of the unidirectional gating module;

[0028] Figure 7 for Figure 4 Side view of the structure at AA` in the middle;

[0029] Figure 8 for Figure 5 Side view of the structure at the middle BB`;

[0030] Description of reference numerals:

[0031] 1-driving module; 2-signal transmission module; 3-grounding module; 4-unidirectional selection module; 5-electrostatic charging and discharging module; 51-capacitor element; 511-first conductive layer; 512-insulating layer; 513-second conductive layer; 52-resistor element; 521-source; 522-drain; 523-gate; 524-semiconductor layer; 525-first transfer hole; 526-second transfer hole; 6-electrostatic release module; 71-substrate; 72-gate insulating layer. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the driving circuit, array substrate and display device provided by the present invention are described in detail below with reference to the accompanying drawings.

[0033] like Figure 1 As shown, an embodiment of the present invention provides a driving circuit, which may include a driving module 1, a signal transmission module 2, a grounding module 3, a unidirectional gating module 4 and an electrostatic charging and discharging module 5, wherein the signal transmission module 2 is electrically connected to the driving module 1, and is used to transmit a driving signal to the driving module 1, the grounding module 3 is used for grounding, the unidirectional gating module 4 is connected in series with the signal transmission module 2, and the unidirectional gating module 4 is used to selectively turn on when its turn-on voltage is less than or equal to the voltage of the signal transmission module 2, or to turn off when its turn-on voltage is greater than the voltage of the signal transmission module 2, and the turn-on voltage of the unidirectional gating module 4 is greater than the turn-on voltage of the driving module 1; the electrostatic charging and discharging module 5 is connected in series with the unidirectional gating module 4 and is electrically connected to the grounding module 3, and the electrostatic charging and discharging module 5 is used to store charges and release the stored charges to the grounding module 3.

[0034] The driving circuit provided by the embodiment of the present invention connects the unidirectional gating module 4 in series with the signal transmission module 2, and connects the electrostatic charging and discharging module 5 in series with the unidirectional gating module 4 and grounds them. Since the unidirectional gating module 4 can selectively be turned on when its turn-on voltage is less than or equal to the voltage of the signal transmission module 2, the electrostatic charging and discharging module 5 can store the charge and release the stored charge to the grounding module 3. Therefore, when the voltage of the signal transmission module 2 is greater than or equal to the turn-on voltage of the unidirectional gating module 4 due to the accumulation of static electricity, the unidirectional gating module 4 will be turned on, so that the signal transmission module 2 is electrically connected to the electrostatic charging and discharging module 5 through the unidirectional gating module 4, so that the electrostatic charge accumulated in the signal transmission module 2 can be exported to the electrostatic charging and discharging module 5 through the unidirectional gating module 4, and the electrostatic charging and discharging module 5 will store and release the electrostatic charge exported by the unidirectional gating module 4 to the grounding module 3, thereby avoiding the introduction of electrostatic charge into the driving device electrically connected to the signal transmission module 2. Module 1, thereby preventing the driving circuit from being broken down and burned by static electricity, improving the stability of the display panel, and, when external static electricity is introduced into the driving circuit through the grounding module 3, the static electricity charge introduced from the outside can be stored and released to the grounding module 3 with the help of the static electricity charging and discharging module 5, so that there is no need to use a sealing glue to cover the grounding module 3, so that the external static electricity charge can be prevented from being introduced into the driving module 1, thereby preventing the driving circuit from being broken down and burned by static electricity, improving the stability of the panel, and reducing the border width of the panel, and, because the unidirectional gating module 4 can selectively be turned off when its start-up voltage is greater than the voltage of the signal transmission module 2, and the start-up voltage of the unidirectional gating module 4 is greater than the start-up voltage of the driving module 1, therefore, when the signal transmission module 2 transmits a normal driving signal to the driving module 1, the unidirectional gating module 4 will be in a shut-off state, so that the normal driving signal can be transmitted to the driving module 1, so that the driving circuit can work normally.

[0035] In a preferred embodiment of the present invention, the driving circuit may include a row driving circuit of the array substrate 71, the row driving circuit of the array substrate 71 includes a plurality of cascaded shift registers, the driving module 1 may include a first-stage shift register among the plurality of cascaded shift registers, and the signal transmission module 2 may include a row driving start input signal line, the row driving start input signal line is electrically connected to the input end of the first-stage shift register, and is used to transmit a start driving signal to the first-stage shift register. However, the types of the driving circuit, the driving module 1, and the signal transmission module 2 are not limited thereto.

[0036] The following takes the driving circuit as the row driving circuit of the array substrate 71, the driving module 1 as the first-stage shift register among the multiple shift registers of the row driving circuit of the array substrate 71, the signal transmission module 2 as the row driving start input signal line of the row driving circuit of the array substrate 71, and the grounding module 3 as the grounding signal line of the row driving circuit of the array substrate 71 as an example to illustrate the driving circuit provided by an embodiment of the present invention. When the row driving circuit of the array substrate 71 is working normally, the row driving start input signal line will transmit a start driving signal with a voltage reaching the start voltage of the first-stage shift register to the first-stage shift register. Since the start voltage of the unidirectional selection module 4 is greater than the start voltage of the first-stage shift register, the unidirectional selection module 4 will be in an off state and will not be turned on at this time, so as to avoid the charge of the start driving signal being exported to the electrostatic charging and discharging module 5 through the unidirectional selection module 4 due to the conduction of the unidirectional selection module 4, resulting in the voltage of the start driving signal transmitted to the first-stage shift register being less than the start voltage of the first-stage shift register, causing the first-stage shift register to be unable to be turned on, so that the start driving signal can normally turn on the first-stage shift register. Since the multiple shift registers of the row driving circuit of the array substrate 71 are cascaded, the multiple shift registers of the row driving circuit of the array substrate 71 can be turned on in this way, so that the row driving circuit of the array substrate 71 can work normally.

[0037] When the row drive start input signal line accumulates static electricity, the voltage of the row drive start input signal line will increase. When the voltage of the row drive start input signal line increases to a value greater than or equal to the start voltage of the unidirectional gating module 4, the unidirectional gating module 4 will be turned on. The turning on of the unidirectional gating module 4 will make the row drive start input signal line electrically connected to the electrostatic charging and discharging module 5 through the unidirectional gating module 4. In this way, the electrostatic charge accumulated in the row drive start input signal line can be exported to the electrostatic charging and discharging module 5 through the unidirectional gating module 4. The electrostatic charge exported to the electrostatic charging and discharging module 5 will first be The electrostatic charging and discharging module 5 stores the electrostatic charge, and then gradually releases it to the ground signal line, and finally releases it through the ground signal line. This can, on the one hand, prevent the electrostatic charge from being introduced into the first-stage shift register electrically connected to the row drive start input signal line, thereby preventing the first few rows of the array substrate 71 row drive circuit from being broken down and burned by static electricity, thereby improving the stability of the panel. On the other hand, it can also prevent the normal start drive signal charge from being exported to the electrostatic charging and discharging module 5 due to the excessively rapid release of the electrostatic charge, thereby enabling the array substrate 71 row drive circuit to work normally.

[0038] When external static electricity is introduced into the array substrate 71 row driving circuit through the ground signal line, the external static electricity charge will first be introduced into the electrostatic charging and discharging module 5 through the ground signal line, and the external static electricity charge introduced into the electrostatic charging and discharging module 5 will first be stored by the electrostatic charging and discharging module 5. Since the unidirectional selection module 4 will not be turned on at this time, the external static electricity charge will be gradually released to the ground signal line by the electrostatic charging and discharging module 5, and finally released through the ground signal line. In this way, the external static electricity charge can be prevented from being introduced into the circuit structure in the array substrate 71 row driving circuit, such as the electrostatic release module 6 and the first-stage shift register, thereby preventing the array substrate 71 row driving circuit from being broken down and burned by static electricity, thereby improving the stability of the panel. In addition, since there is no need to use frame sealing glue to cover the ground signal line, the array substrate 71 row driving circuit can be prevented from being broken down and burned by static electricity. Therefore, the influence of the frame sealing glue on the ultra-narrow frame design can be avoided, thereby reducing the frame width of the panel.

[0039] In a preferred embodiment of the present invention, the number of driving modules 1, signal transmission modules 2 and unidirectional gating modules 4 can all be multiple, and the multiple signal transmission modules 2 are electrically connected to the multiple driving modules 1 in a one-to-one manner, and each signal transmission module 2 is used to transmit a driving signal to the corresponding driving module 1. The multiple unidirectional gating modules 4 are connected in series with the multiple signal transmission modules 2 in a one-to-one manner, and are all connected in series with the electrostatic charging and discharging module 5. Each unidirectional gating module 4 is used to selectively turn on when its turn-on voltage is less than or equal to the voltage of the corresponding signal transmission module 2, or turn off when its turn-on voltage is greater than the voltage of the corresponding signal transmission module 2, and the turn-on voltage of each unidirectional gating module 4 is greater than the turn-on voltage of the corresponding driving module 1.

[0040] Such a design can export the static electricity accumulated by multiple signal transmission modules 2 through only one static electricity charging and discharging module 5, thereby reducing the complexity of the driving circuit and reducing the manufacturing cost of the driving circuit. When one or more signal transmission modules 2 among the multiple signal transmission modules 2 accumulate static electricity, causing the voltage of one or more signal transmission modules 2 to be greater than or equal to the turn-on voltage of the corresponding unidirectional gating module 4, the corresponding unidirectional gating module 4 will be turned on, and the accumulated static electricity charge can be exported to the static electricity charging and discharging module 5, thereby avoiding the accumulated static electricity from being introduced into the corresponding driving module 1, causing the corresponding driving module 1 to be broken down and burned by static electricity.

[0041] like Figure 1 As shown, the number of the driving module 1, the signal transmission module 2 and the unidirectional gating module 4 is two for illustration. Figure 2 and Figure 4As shown, one of the two driving modules 1, one of the two signal transmission modules 2, and one of the two unidirectional gating modules 4 can be arranged at the lower left corner of the panel, as shown in FIG. Figure 3 and Figure 5 As shown, the other driving module 1 of the two driving modules 1, the other signal transmission module 2 of the two signal transmission modules 2, and the other unidirectional gating module 4 of the two unidirectional gating modules 4 can be arranged at the lower right corner of the panel. The signal transmission module 2 arranged at the lower left corner of the panel is electrically connected to the driving module 1 in correspondence, and is used to transmit a driving signal to the corresponding driving module 1. The unidirectional gating module 4 arranged at the lower left corner of the panel is connected in series with the signal transmission module 2, and is used to selectively turn on when its start-up voltage is less than or equal to the voltage of the corresponding signal transmission module 2, or turn off when its start-up voltage is greater than the voltage of the corresponding signal transmission module 2, and its start-up voltage is greater than the start-up voltage of the corresponding driving module 1. The signal transmission module 2 arranged at the lower right corner of the panel is electrically connected to the driving module 1 in correspondence, and is used to transmit a driving signal to the corresponding driving module 1. The unidirectional gating module 4 arranged at the lower right corner of the panel is connected in series with the signal transmission module 2, and is used to selectively turn on when its start-up voltage is less than or equal to the voltage of the corresponding signal transmission module 2, or turn off when its start-up voltage is greater than the voltage of the corresponding signal transmission module 2, and its start-up voltage is greater than the start-up voltage of the corresponding driving module 1. As shown Figure 2 and Figure 3 As shown, an electrostatic charging and discharging module 5 is provided in the middle of the panel, and the electrostatic charging and discharging module 5 spans the left and right sides of the panel, and is respectively connected in series with the one-way gating module 4 provided at the lower left corner of the panel and the one-way gating module 4 provided at the lower right corner of the panel, so that multiple one-way gating modules 4 are connected in series with the electrostatic charging and discharging module 5, and the electrostatic charging and discharging module 5 is electrically connected to the part of the grounding module 3 located on the right side of the panel on the right side of the panel. However, the distribution of the electrostatic charging and discharging module 5, the grounding module 3, the multiple driving modules 1, the multiple signal transmission modules 2 and the multiple one-way gating modules 4 in the panel is not limited to this.

[0042] In a preferred embodiment of the present invention, the unidirectional gating module 4 may include a diode element, an input electrode of the diode element is electrically connected to the signal transmission module 2 , and an output electrode is electrically connected to the electrostatic charging and discharging module 5 .

[0043] When the voltage of the signal transmission module 2 is greater than or equal to the turn-on voltage of the diode element due to the accumulation of static electricity, the diode element will be turned on, and the electrostatic charge accumulated in the signal transmission module 2 can be discharged to the diode element through the input electrode electrically connected to the diode element, and discharged to the electrostatic charging and discharging module 5 through the output electrode electrically connected to the electrostatic charging and discharging module 5 by the diode element, thereby realizing that the electrostatic charge accumulated in the signal transmission module 2 is discharged to the electrostatic charging and discharging module 5 through the unidirectional gating module 4.

[0044] In a preferred embodiment of the present invention, the diode element may include a thin film transistor, one of the source 521 and the drain 522 of the thin film transistor serves as an output electrode, and the other is electrically connected to the gate 523 as an input electrode.

[0045] like Figure 6 As shown, the thin film transistor may include a source 521, a drain 522, a gate 523 and a semiconductor layer 524. The positional relationship between the source 521, the drain 522, the gate 523 and the semiconductor layer 524 may be that the source 521, the drain 522 and the gate 523 are spaced apart and are located on the same side of the semiconductor layer 524, or the source 521 and the drain 522 are spaced apart and are located on one side of the semiconductor layer 524, and the gate 523 is located on the other side of the semiconductor layer 524. Optionally, the source 521 and the gate 523 of the thin film transistor are electrically connected as an input electrode, and the drain 522 of the thin film transistor is used as an output electrode. However, the form of the thin film transistor as a diode element is not limited to this, and the drain 522 and the gate 523 of the thin film transistor may also be electrically connected as an input electrode, and the source 521 of the thin film transistor may be used as an output electrode.

[0046] like Figure 6 As shown, the source 521 and the gate 523 can be electrically connected by making a first transfer hole 525 on the gate 523, making a second transfer hole 526 on the source 521, filling the first transfer hole 525 and the second transfer hole 526 with conductive media, respectively, and connecting the conductive media in the first transfer hole 525 and the conductive media in the second transfer hole 526 through the conductive media, thereby realizing the electrical connection between the source 521 and the gate 523. Such a design is because in the process of manufacturing the drive circuit, it is necessary to form a lot of thin film transistors on the substrate 71, and using thin film transistors as the unidirectional gating module 4 to be electrically connected to the signal transmission module 2 and the electrostatic charging and discharging module 5 respectively, so that the unidirectional gating module 4 can be formed simultaneously with the drive circuit in the process of manufacturing the drive circuit, so that the manufacturing difficulty and manufacturing cost of the drive circuit provided by the embodiment of the present invention will not increase.

[0047] Optionally, the thin film transistor may include an amorphous silicon thin film transistor (A-Si) or an oxide thin film transistor.

[0048] like Figure 1-Figure 5 As shown, in a preferred embodiment of the present invention, the electrostatic charging and discharging module 5 may include a capacitor element 51 , a first electrode of the capacitor element 51 is electrically connected to the unidirectional gating module 4 , and a second electrode is electrically connected to the grounding module 3 .

[0049] When the voltage of the signal transmission module 2 is greater than or equal to the opening voltage of the unidirectional gating module 4 due to the accumulation of static electricity, so that the unidirectional gating module 4 is turned on, the electrostatic charge accumulated in the signal transmission module 2 can be exported to the first electrode of the capacitor element 51 electrically connected to the unidirectional gating module 4 through the unidirectional gating module 4, and the electrostatic charge is introduced into the capacitor element 51 through the first electrode and stored by the capacitor element 51. Then, the capacitor element 51 exports the stored electrostatic charge to the grounding module 3 through its second electrode electrically connected to the grounding module 3, thereby realizing the storage of the electrostatic charge exported by the signal transmission module 2 and releasing the stored electrostatic charge to the grounding module 3. When external static electricity is introduced into the driving circuit through the grounding module 3, the external static charge will be introduced into the capacitor element 51 through the second electrode electrically connected to the grounding module 3 by the capacitor element 51, and stored by the capacitor element 51. Then, the capacitor element 51 exports the stored external static charge to the grounding module 3 through its second electrode electrically connected to the grounding module 3, thereby realizing the storage of the external static charge and releasing the stored external static charge to the grounding module 3.

[0050] like Figure 7 and Figure 8 As shown, in a preferred embodiment of the present invention, the capacitor element 51 may include a first conductive layer 511, an insulating layer 512, and a second conductive layer 513. The insulating layer 512 is formed on the first conductive layer 511, and the second conductive layer 513 is formed on the insulating layer 512. One of the first conductive layer 511 and the second conductive layer 513 serves as a first electrode, and the other serves as a second electrode. That is, the first conductive layer 511 may serve as the first electrode, and the second conductive layer 513 may serve as the second electrode, or the second conductive layer 513 may serve as the first electrode, and the first conductive layer 511 may serve as the second electrode.

[0051] In a preferred embodiment of the present invention, the first conductive layer 511 may be a source-drain metal film layer, the insulating layer 512 may be a silicon nitride film layer, and the second conductive layer 513 may be an indium tin oxide film layer. Such a design is due to the fact that in the process of manufacturing the drive circuit, a source-drain metal film layer, a silicon nitride film layer, and an indium tin oxide film layer are formed on the substrate 71, and the source-drain metal film layer, the silicon nitride film layer, and the indium tin oxide film layer are used as the first conductive layer 511, the insulating layer 512, and the second conductive layer 513 of the capacitor element 51, respectively, so that the electrostatic charging and discharging module 5 can be formed simultaneously with the drive circuit during the manufacturing process of the drive circuit, so that the manufacturing difficulty and manufacturing cost of the drive circuit provided in the embodiment of the present invention will not increase.

[0052] like Figure 7As shown, a gate insulating layer 72 can be formed on the substrate 71 where the capacitor element 51 of the driving circuit is located, and a gate that can be used as a grounding module 3 is provided in the gate insulating layer 72, and a source-drain metal film layer is formed on the gate insulating layer 72, and a silicon nitride film layer is formed on the source-drain metal film layer, and an indium tin oxide film layer is formed on the silicon nitride film layer, wherein the source-drain metal film layer can be used as the first conductive layer 511 of the capacitor element 51, the silicon nitride film layer can be used as the insulating layer 512 of the capacitor element 51, and the indium tin oxide film layer can be used as the second conductive layer 513 of the capacitor element 51.

[0053] like Figure 1-Figure 5 As shown, in a preferred embodiment of the present invention, the electrostatic charging and discharging module 5 may also include a resistor element 52, one end of the resistor element 52 is electrically connected to the capacitor element 51, and the other end is electrically connected to the grounding module 3, and the resistor element 52 is used to transfer the charge released by the capacitor element 51 to the grounding module 3.

[0054] When the electrostatic charging and discharging module 5 releases the stored charge, the charge is led to the resistor element 52 through one end electrically connected to the capacitor element 51 by the resistor element 52, and after flowing through the resistor element 52, is led to the grounding module 3 through the other end electrically connected to the grounding module 3 by the resistor element 52, and finally released through the grounding module 3. With the help of the resistor element 52, the charge stored in the capacitor element 51 can be slowly released to the grounding module 3, further avoiding the charge of the normal driving signal being led to the electrostatic charging and discharging module 5 due to the too-fast release of the electrostatic charge of the signal transmission module 2, so that the driving circuit can work normally.

[0055] In a preferred embodiment of the present invention, the resistor element 52 may include an indium tin oxide film layer. Such a design is due to the fact that during the manufacturing process of the drive circuit, an indium tin oxide film layer will be formed on the substrate 71, and by using the indium tin oxide film layer as the resistor element 52, the electrostatic charging and discharging module 5 can be formed simultaneously with the drive circuit during the manufacturing process of the drive circuit, so that the manufacturing difficulty and manufacturing cost of the drive circuit provided by the embodiment of the present invention will not increase, and because the indium tin oxide film layer can be formed in a large lateral space of the panel, the manufacture of the resistor element 52 with a resistance value of Ω-GΩ level can be achieved.

[0056] like Figure 8As shown, a gate insulating layer 72 may be formed on a substrate 71 where a capacitor element 51 of a driving circuit is located, a gate which can be used as a grounding module 3 is arranged in the gate insulating layer 72, a source-drain metal film layer is formed on the gate insulating layer 72, a silicon nitride film layer is formed on the source-drain metal film layer, and a via is arranged in the silicon nitride film layer, an indium tin oxide film layer is formed on the silicon nitride film layer and in the via of the silicon nitride film layer, wherein the source-drain metal film layer may be used as a first conductive layer 511 of the capacitor element 51, the silicon nitride film layer may be used as an insulating layer 512 of the capacitor element 51, the indium tin oxide film layer formed on the silicon nitride film layer may be used as a second conductive layer 513 of the capacitor element 51, the indium tin oxide film layer formed in the via may be used as a resistor element 52, and the indium tin oxide film layer formed in the via of the silicon nitride film layer is connected to the gate which can be used as a grounding module 3 in the gate insulating layer 72, so that the other end of the resistor element 52 is electrically connected to the grounding module 3.

[0057] In a preferred embodiment of the present invention, the width-to-length ratio of the thin film transistor can be reduced by increasing the channel length of the thin film transistor, so that the turn-on voltage of the thin film transistor can be increased. Therefore, the width-to-length ratio of the thin film transistor can be made smaller than the width-to-length ratio of the first-stage shift register by making the channel length of the thin film transistor greater than the communication length of the first-stage shift register, so that the turn-on voltage of the thin film transistor can be greater than the turn-on voltage of the first-stage shift register.

[0058] like Figure 2 and Figure 3 As shown, the embodiment of the present invention further provides an array substrate 71, which may include a driving circuit as provided in the embodiment of the present invention.

[0059] The array substrate 71 provided in the embodiment of the present invention can prevent the driving circuit from being broken down and burned by static electricity by means of the driving circuit provided in the embodiment of the present invention, thereby improving the stability of the panel and reducing the border width of the panel.

[0060] The embodiment of the present invention further provides a display device, which may include an array substrate 71 and a color filter substrate 71 arranged in a box, wherein the array substrate 71 adopts the array substrate 71 provided in the embodiment of the present invention.

[0061] The display device provided by the embodiment of the present invention can prevent the driving circuit from being broken down and burned by static electricity by means of the array substrate 71 provided by the embodiment of the present invention, thereby improving the stability of the panel and reducing the frame width of the panel.

[0062] In summary, the driving circuit, array substrate 71 and display device provided by the embodiments of the present invention can prevent the driving circuit from being broken down and burned by static electricity, improve the stability of the panel, and reduce the border width of the panel.

[0063] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A driving circuit, comprising a driving module, a signal transmission module and a grounding module, wherein: The signal transmission module is electrically connected to the driving module and is used to transmit a driving signal to the driving module. The grounding module is used for grounding. It is characterized in that the output end of the signal transmission module is directly electrically connected to the input end of the driving module. The driving circuit also includes a unidirectional gating module and an electrostatic charging and discharging module. The unidirectional gating module is connected in series with the signal transmission module. The unidirectional gating module is used to selectively turn on when its turn-on voltage is less than or equal to the voltage of the signal transmission module, or turn off when its turn-on voltage is greater than the voltage of the signal transmission module, and the turn-on voltage of the unidirectional gating module is greater than the turn-on voltage of the driving module. The electrostatic charging and discharging module is connected in series with the one-way gating module and is electrically connected to the grounding module, and the electrostatic charging and discharging module is located between the one-way gating module and the grounding module; The electrostatic charging and discharging module is used to store charges and release the stored charges to the grounding module.

2. The driving circuit according to claim 1, characterized in that: The unidirectional gating module includes a diode element, an input pole of the diode element is electrically connected to the signal transmission module, and an output pole is electrically connected to the electrostatic charging and discharging module.

3. The driving circuit according to claim 1, characterized in that: The unidirectional gating module includes a thin film transistor, one of the source and the drain of the thin film transistor serves as the output electrode, and the other is electrically connected to the gate electrode as the input electrode.

4. The driving circuit according to claim 1, characterized in that: The electrostatic charging and discharging module comprises a capacitor element, a first electrode of the capacitor element is electrically connected to the unidirectional gating module, and a second electrode of the capacitor element is electrically connected to the grounding module.

5. The driving circuit according to claim 4, characterized in that: The capacitor element includes a first conductive layer, an insulating layer, and a second conductive layer, wherein the insulating layer is formed on the first conductive layer, the second conductive layer is formed on the insulating layer, one of the first conductive layer and the second conductive layer serves as the first electrode, and the other serves as the second electrode.

6. The driving circuit according to claim 5, characterized in that: The first conductive layer is a source-drain metal film layer, the insulating layer is a silicon nitride film layer, and the second conductive layer is an indium tin oxide film layer.

7. The driving circuit according to claim 4, characterized in that: The electrostatic charging and discharging module further includes a resistor element, one end of which is electrically connected to the capacitor element, and the other end of which is electrically connected to the grounding module. The resistor element is used to transfer the charge released by the capacitor element to the grounding module.

8. The driving circuit according to claim 7, characterized in that: The resistor element includes an indium tin oxide film layer.

9. The driving circuit according to claim 1, characterized in that: There are multiple driving modules, signal transmission modules and unidirectional gating modules, and the multiple signal transmission modules are electrically connected to the multiple driving modules in a one-to-one correspondence. Each of the signal transmission modules is used to transmit a driving signal to the corresponding driving module. The multiple unidirectional gating modules are connected in series with the multiple signal transmission modules in a one-to-one correspondence, and are all connected in series with the electrostatic charging and discharging module. Each of the unidirectional gating modules is used to selectively turn on when its turn-on voltage is less than or equal to the voltage of the corresponding signal transmission module, or turn off when its turn-on voltage is greater than the voltage of the corresponding signal transmission module, and the turn-on voltage of each of the unidirectional gating modules is greater than the turn-on voltage of the corresponding driving module.

10. The driving circuit according to claim 1, characterized in that: The driving circuit includes an array substrate row driving circuit, the array substrate row driving circuit includes a plurality of cascaded shift registers, the driving module includes a first-stage shift register among the plurality of cascaded shift registers, and the signal transmission module includes a row driving start input signal line, the row driving start input signal line is electrically connected to the input end of the first-stage shift register, and is used to transmit a start driving signal to the first-stage shift register.

11. An array substrate, characterized in that: Comprising the driving circuit as described in any one of claims 1-10.

12. A display device, characterized in that: The invention comprises an array substrate and a color filter substrate which are arranged in a box, wherein the array substrate adopts the array substrate as claimed in claim 11.

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