Driving circuit, display device and waveform adjustment method

Abstract

The present application provides a driving circuit, a display device and a waveform adjustment method, which mainly relate to the field of display technology. Among them, the driving circuit includes a gate driving circuit module and a power control module, the output end of the power control module is connected to the input end of the gate driving circuit module, and the power control module is used to input a driving voltage signal to the gate driving circuit module. The driving circuit also includes a detection module, the input end of the detection module is connected to the output end of the gate driving circuit module, and the output end of the detection module is connected to the input end of the power control module. The detection module is used to detect the waveform of the scanning signal output by the gate driving circuit module, and input an adjustment instruction to the power control module when the waveform is abnormal. The power control module is also used to adjust the driving voltage signal according to the adjustment instruction. Thereby solving the problem of abnormal output of the gate driving circuit.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a driving circuit, a display device and a waveform adjustment method. Background Art

[0002] The gate driver less (GDL) technology is to manufacture the original driving circuit for controlling the scan line in the liquid crystal display panel on the substrate around the display area, so that it can replace the external integrated circuit (IC) to complete the driving of the horizontal scan line, and there is no need to set up a separate IC for driving the horizontal scan line.

[0003] The GDL circuit is composed of a thin film transistor (TFT) circuit. During use, there is a problem with TFT, that is, the threshold voltage of TFT will drift under long-term gate bias, which will cause the output of the GDL circuit to change, thereby affecting the display effect of the display panel. When the output of the GDL circuit is seriously abnormal, it may even cause the display panel to fail. Summary of the invention

[0004] In order to solve the above problems, the present application provides a driving circuit, a display device and a waveform adjustment method, which can solve the problem of abnormal output of the GDL circuit.

[0005] In a first aspect, the present application provides a driving circuit, including a gate driving circuit module and a power control module, wherein the output end of the power control module is connected to the input end of the gate driving circuit module, and the power control module is used to input a driving voltage signal to the gate driving circuit module. The driving circuit also includes a detection module, wherein the input end of the detection module is connected to the output end of the gate driving circuit module, and the output end of the detection module is connected to the input end of the power control module. The detection module is used to detect the waveform of the scanning signal output by the gate driving circuit module, and input an adjustment instruction to the power control module when the waveform is abnormal, and the power control module is also used to adjust the driving voltage signal according to the adjustment instruction.

[0006] In one possible design, the detection module includes a comparator, a first input end of the comparator is an input end of the detection module, a second input end of the comparator is used to receive a preset standard waveform, and an output end of the comparator is an output end of the detection module.

[0007] In a possible design, the detection module includes a voltage testing chip.

[0008] In a possible design, adjusting the driving voltage signal includes: adjusting at least one of a voltage value, a wavelength, a rise time, and a fall time of the driving voltage signal.

[0009] In a possible design, the gate drive circuit module includes a plurality of gate drive submodules, the power control module includes a power control submodule corresponding to the plurality of gate drive submodules, and the detection module includes a plurality of detection submodules corresponding to the plurality of gate drive submodules. The output end of each power control submodule is connected to the input end of the corresponding gate drive submodule, the output end of each gate drive submodule is connected to the input end of the corresponding detection submodule, and the output end of each detection submodule is connected to the input end of the corresponding power control submodule.

[0010] In a second aspect, the present application provides a display device, comprising the control circuit described in any optional manner of the first aspect.

[0011] In a third aspect, the present application provides a method for adjusting the waveform of a scanning signal, which is applied to the display device described in any optional manner of the second aspect, and the waveform adjustment method includes: obtaining the waveform of the scanning signal. The second characteristic value of the scanning signal is detected according to the first characteristic value of the preset standard waveform. If the error between the first characteristic value and the second characteristic value is greater than a preset threshold, the waveform of the scanning signal is abnormal. The first characteristic value is at least one of the amplitude, wavelength, rise time and fall time of the standard waveform, and correspondingly, the second characteristic value is at least one of the amplitude, wavelength, rise time and fall time of the scanning signal; when the waveform of the scanning signal is detected to be abnormal, the driving voltage signal corresponding to the scanning signal is adjusted.

[0012] In a possible design, adjusting the driving voltage signal corresponding to the scanning signal includes: increasing or decreasing a third characteristic value of the driving voltage signal by a preset amplitude according to the error.

[0013] In a possible design, the third characteristic value is at least one of the amplitude, wavelength, rise time and fall time of the driving voltage signal.

[0014] In a possible design, the display device includes a power control module for outputting a driving voltage signal, and a plurality of voltage levels are preset in the power control module. When the third characteristic value is the amplitude of the driving voltage signal, the third characteristic value of the driving voltage signal is increased or decreased by a preset amplitude according to the error, including: controlling the power control module to increase or decrease the voltage level corresponding to the driving voltage signal by one level according to the error.

[0015] In a possible design, after adjusting the driving voltage signal corresponding to the scanning signal, the waveform adjustment method further includes: detecting a second characteristic value of the adjusted scanning signal according to the first characteristic value, the adjusted scanning signal being a scanning signal driven by the adjusted driving voltage signal. If the adjusted scanning signal is abnormal, the adjusted driving voltage signal continues to be adjusted.

[0016] The driving circuit provided in the present application is provided with a detection module, which can perform real-time detection on the waveform of the scanning signal output by the gate driving circuit module. When the detection module detects that the waveform is abnormal, it can input an adjustment instruction to the power control module, so that the power control module can adjust the waveform of the scanning signal output by the gate driving circuit module by adjusting the driving voltage signal output to the gate driving circuit module until the waveform is no longer abnormal, thereby solving the problem of abnormal gate driving circuit output. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 The driving circuit structure provided in the first embodiment of the present application is shown in FIG. Figure 1 ;

[0019] Figure 2 The driving circuit structure provided in the first embodiment of the present application is shown in FIG. Figure 2 ;

[0020] Figure 3 It is the preset standard waveform diagram provided in Example 1 of the present application;

[0021] Figure 4 This is a waveform diagram of an abnormality provided in Example 1 of the present application;

[0022] Figure 5 This is a schematic diagram of the display device structure provided in the second embodiment of the present application. Figure 1 ;

[0023] Figure 6 This is a schematic diagram of the display device structure provided in Example 2 of the present application. Figure 2 ;

[0024] Figure 7 This is a schematic diagram of the display device structure provided in the second embodiment of the present application. Figure 3 ;

[0025] Figure 8 This is a flow chart of the waveform adjustment method of the scanning signal provided in Example 3 of the present application.

[0026] Among them, the reference numerals in the figure are:

[0027] 1. Gate drive circuit module;

[0028] 2. Power control module;

[0029] 3, detection module; 301, comparator; 302, voltage test chip;

[0030] 4. Display panel;

[0031] 5. Control panel;

[0032] 6. Adapter plate;

[0033] 7. Chip-on-chip film. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0036] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] The driving circuit, display device and waveform adjustment method provided in the present application are exemplarily introduced below in conjunction with the accompanying drawings.

[0039] Embodiment 1

[0040] Embodiment 1 of the present application provides a driving circuit, such as Figure 1 As shown, it is a schematic diagram of a driving circuit provided by an embodiment of the present application. It includes a gate driving circuit module 1, a power control module 2 and a detection module 3. Among them, the output end of the power control module 2 is connected to the input end of the gate driving circuit module 1, and the power control module 2 is used to input a driving voltage signal to the gate driving circuit module 1.

[0041] The gate driver circuit module 1 in the present application is described by taking a GDL (Gate Driver less, GDL) circuit module as an example.

[0042] Among them, the power control module 2 is a circuit module used to provide power to the GDL circuit module. Exemplarily, the power control module 2 may include a power management integrated circuit (Power Management IC, PMIC), and the PMIC may output a driving voltage signal to the GDL circuit module to provide power to the GDL circuit module.

[0043] In one example, the power control module 2 may include two PMICs. For example, one PMIC is used to output a shutdown voltage (V gate low, VGL) signal to the GDL circuit module, and the other PMIC is used to output a start voltage (V gate high, VGH) signal to the GDL circuit module.

[0044] It is worth noting that the power control module 2 can also provide power to other circuit modules in the driving circuit or other circuit modules in the display device where the driving circuit is located, and this application does not impose any limitation on this.

[0045] The input end of the detection module 3 is connected to the output end of the GDL circuit module, so that the detection module 3 can receive the scanning signal output by the GDL circuit module. The output end of the detection module 3 is connected to the input end of the power control module 2. The detection module 3 is used to detect the waveform of the scanning signal output by the GDL circuit module, and input an adjustment instruction to the power control module 2 when the waveform is abnormal, and the power control module 2 can adjust the driving voltage signal according to the adjustment instruction.

[0046] Exemplarily, the power control module 2 can specifically adjust at least one of the amplitude, wavelength, rise time and fall time of the driving voltage signal. For example, the size of VGH or the size of VGL can be adjusted by adjusting the amplitude.

[0047] In one example, when the GDL circuit module is only set on a single side, since the GDL circuit sub-modules in the single-sided GDL circuit module are staged, it is only necessary to detect the waveform of the scanning signal output by one of the GDL circuit sub-modules. For example, the output of the GDL circuit sub-module located at the edge of the display panel can be detected.

[0048] In another example, when the GDL circuit modules are set on both sides, since the GDL circuit sub-modules in the GDL circuit modules on both sides are stage-transmitted, it is only necessary to detect the waveform of the scanning signal output by any one of the GDL circuit sub-modules on the two sides respectively. For example, assuming that the two sides are the left position and the right position respectively, there is a GDL circuit sub-module in the GDL circuit module at the left position, and the detection module 3 needs to have two detection sub-modules corresponding one-to-one to the left GDL circuit sub-module and the right GDL circuit sub-module respectively. Then, the power control module 2 is also provided with a power control sub-module corresponding one-to-one to the left GDL circuit sub-module and the right GDL circuit sub-module, so as to detect and adjust the left GDL circuit sub-module and the right GDL circuit sub-module respectively.

[0049] The driving circuit provided in the present application is provided with a detection module 3, and the detection module 3 can perform real-time detection on the waveform of the scanning signal output by the GDL circuit module. When the detection module 3 detects that the waveform is abnormal, it can input an adjustment instruction to the power control module 2, so that the power control module 2 can adjust the waveform of the scanning signal output by the GDL circuit module by adjusting the driving voltage signal output to the GDL circuit module until the waveform is no longer abnormal, thereby solving the problem of abnormal GDL circuit output.

[0050] In one example, the detection module 3 may include: Figure 2 The comparator 301 shown, the first input terminal 301a of the comparator 301 is the input terminal of the detection module 3, that is, the first input terminal 301a is connected to the output terminal of the GDL circuit module, the second input terminal 301b of the comparator 301 is used to receive the preset standard waveform, and the output terminal 301c of the comparator 301 is the output terminal of the detection module 3. The comparator 301 can compare the standard waveform with the waveform output by the GDL circuit module to determine whether to output the adjustment instruction to the power control module 2. It can be understood that the preset standard waveform here refers to the waveform when the GDL circuit module outputs normally, that is, the waveform when the TFT threshold voltage does not drift.

[0051] In this example, if the GDL circuit modules are set on both sides, the detection module 3 includes two detection submodules to detect the waveform output by any GDL circuit submodule on both sides respectively. It can be understood that the two detection submodules here are two comparators 301.

[0052] After the power control module 2 is turned on, the power control module 2 inputs a driving voltage signal to the GDL circuit module, so that the GDL circuit module can output a scanning signal, and the GDL circuit module simultaneously outputs the scanning signal to the first input terminal 301a of the comparator 301 connected to the output terminal of the GDL circuit module and the display area in the display panel. The comparator 301 compares the waveform of the scanning signal received by the first input terminal 301a with the preset standard waveform input by the second input terminal 301b to detect whether the waveform of the scanning signal output by the GDL circuit module is abnormal. Exemplarily, the comparator 301 can compare at least one of the amplitude, wavelength, rise time and fall time of the two waveforms.

[0053] When the comparator 301 detects that the waveform detected at the first input terminal 301a is the same as or similar to the preset standard waveform received at the second input terminal 301b (for example, it meets the requirements regarding the preset threshold involved in Example 1), it indicates that the output of the GDL circuit module is normal, and the comparator 301 does not output an adjustment instruction to the power control module 2. At this time, the control voltage signal output by the power control module 2 to the GDL circuit module remains unchanged.

[0054] The so-called similarity means that the error between the waveform detected by the first input terminal 301a of the comparator 301 and the preset standard waveform received at the second input terminal 301b is within a certain range. For example, when the comparator 301 detects the amplitude of the waveform, assuming that the amplitude of the standard scanning signal is 5V (volts), when the error between the amplitude of the scanning signal detected by the first input terminal 301a of the comparator 301 and the standard amplitude at the second input terminal 301b is less than a preset threshold (assuming it is 0.1V), it is called similarity.

[0055] When the comparator 301 detects that the waveform detected at the first input terminal 301a is different from the preset standard waveform received at the second input terminal 301b (for example, it meets the requirements regarding the preset threshold involved in Example 1), it indicates that the output of the GDL circuit module is abnormal. The comparator 301 sends an adjustment instruction to the power control module 2. After receiving the adjustment instruction, the power control module 2 adjusts the driving voltage signal and outputs it to the GDL circuit module.

[0056] In another example, the detection module 3 may include a voltage test chip 302. The voltage test chip 302 is configured to detect the waveform of the scanning signal output by the GDL circuit module, for example, to detect whether at least one of the amplitude, wavelength, rise time and fall time of the scanning signal matches the standard amplitude, standard wavelength, standard rise time and standard fall time, and when an abnormality is detected, an adjustment instruction can be output to the power control module 2.

[0057] In the embodiment of the present application, the power control module 2 can adjust at least one of the amplitude, wavelength, rise time and fall time of the driving voltage signal.

[0058] For example, take adjusting the amplitude of the driving voltage signal as an example. Assuming that the initial VGH is 30V (the VGH in a normal state can be set as the initial VGH), the power control module 2 inputs the initial VGH to the GDL circuit module. At this time, the waveform of the scanning signal output by the GDL circuit module is as follows: Figure 3 As shown in the figure, it is a standard square wave signal. When the ambient temperature of the TFT in the GDL circuit module changes or the gate bias is applied for a long time, the threshold voltage of the TFT will drift, causing the waveform of the scanning signal output by the GDL circuit module to be abnormal. For example, the abnormal waveform of the scanning signal may be as follows: Figure 4 At this time, after the detection device 3 detects the waveform abnormality, it outputs an adjustment instruction to the power control module 2. The power control module 2 can adjust the amplitude of the driving voltage signal output to the GDL circuit module according to the adjustment instruction. For example, the power control module 2 automatically increases the VGH by one level, for example, increases the 30V VGH to 32V, and then outputs it to the GDL circuit module. The GDL circuit module outputs a corresponding scanning signal according to the 32V VGH.

[0059] It is understandable that, since the detection module is connected to the output end of the GDL circuit module, the waveform output by the GDL circuit module can be detected in real time, so that the power control module 2 can adjust the driving voltage signal in real time. After receiving the adjustment instruction each time, the power control module 2 can adjust the preset amplitude based on the currently output driving voltage signal, for example, each time the amplitude of the currently output driving voltage signal is increased / decreased by one level, the wavelength is extended / shortened by the first preset unit time, the rise time is extended / shortened by the second preset unit time, and the fall time is extended / shortened by the third preset unit time, until the detection module 3 detects that the waveform output by the GDL circuit module is normal.

[0060] Among them, when the power control module 2 increases the amplitude of the currently output driving voltage signal to make the GDL circuit module output normally, there will be a problem of heat generation in the power control module 2 due to the increase in amplitude. Therefore, a heat dissipation device, such as a heat dissipation sticker, can be set on the power control module 2.

[0061] Embodiment 2

[0062] Embodiment 2 of the present application further provides a display device, including a display panel 4 and at least one driving circuit as described in Embodiment 1, wherein a GDL circuit module is disposed on the display panel 4 .

[0063] The display panel 4 includes a display area and a non-display area, and the GDL circuit module is generally arranged on the non-display area.

[0064] In one example, the display device may further include: Figure 5 The control board 5 and the adapter board 6 are shown.

[0065] The control board 5 (C-Board) is a circuit board provided with various control circuits in the display device, and is used to control the display panel.

[0066] The adapter board 6 is a circuit board used for debugging and maintenance, and is often used to introduce or lead out signals to facilitate the connection of test instruments.

[0067] In one example, a circuit driven by a single-sided GDL circuit module is used as an example. Figure 5 As shown, the detection module 3 and the power control module 2 can be integrated on the control board 5, and the output end of the GDL circuit module is first connected to the adapter board 6, and then connected to the detection module 3 on the control board 5. In order to enhance the robustness of the routing, the output end of the GDL circuit module can be connected to the adapter board 6 through the chip on film (COF) 6 on the display panel 4. It can be understood that in this example, in order to compress the wiring space and achieve the connection of the routing at the lowest cost, the routing of the output end of the GDL circuit module can be connected to the chip on film 6 closest to it to achieve the optimal routing connection, so that the robustness of the routing is improved and the lowest cost is used.

[0068] Optionally, the detection module 3 and the power control module 2 may also be integrated on the adapter board 6 .

[0069] In this example, since the detection module 3 and the power control module 2 are integrated on the same circuit board, when the GDL circuit module has multiple output wirings (for example, a circuit driven by GDL circuit modules on both sides), there may be a problem of complex wiring connections. For this reason, in another example, taking a circuit driven by a single-sided GDL circuit module as an example, the detection module 3 and the power control module 2 can also be separately arranged, for example, Figure 6 As shown, the detection module 3 can be set on the adapter board 6, and the power control module 2 can be set on the control board 5.

[0070] When the driving circuit is a circuit driven by the GDL circuit modules on both sides, the GDL circuit module and the detection module 3 can be as follows Figure 7As shown, the GDL circuit module on the left is connected to the detection submodule A in the detection module 3 through the flip chip film 6 closest to it. The detection submodule A detects the waveform output by the GDL circuit module on the left, and when an abnormality is detected, it outputs an adjustment instruction to the power control module 2. The GDL circuit module on the right is connected to the detection submodule B in the detection module 3 through the flip chip film 6 closest to it. The detection submodule B detects the waveform output by the GDL circuit module on the right, and when an abnormality is detected, it outputs an adjustment instruction to the power control module 2.

[0071] It is understandable that the specific settings of the positions of the detection module 3 and the power control module 2 can be set according to actual conditions, and this application does not impose any restrictions on this.

[0072] Embodiment 3

[0073] The third embodiment of the present application also provides a method for adjusting the waveform of a scanning signal. Figure 8 As shown, the waveform adjustment method includes:

[0074] S101: Acquire the waveform of the scanning signal.

[0075] The scanning signal refers to a control signal input to a scanning line in a display device. The scanning signal may be provided by a gate driving circuit to control the opening or closing of a row scanning line in the display device.

[0076] S102: Detecting a second characteristic value of the scanning signal according to a first characteristic value of a preset standard waveform.

[0077] If the error between the first characteristic value and the second characteristic value is greater than a preset threshold, the waveform of the scanning signal is abnormal. The first characteristic value is at least one of the amplitude, wavelength, rise time and fall time of the standard waveform, and correspondingly, the second characteristic value is at least one of the amplitude, wavelength, rise time and fall time of the scanning signal.

[0078] It can be understood that when the first eigenvalue is the amplitude of the standard waveform of the scanning signal, the second eigenvalue is the amplitude of the detected scanning signal. When the first eigenvalue is the amplitude and wavelength of the standard waveform of the scanning signal, the corresponding detected second eigenvalue is the amplitude and wavelength of the scanning signal. By comparing the first eigenvalue and the second eigenvalue, it can be determined whether the waveform of the detected scanning signal is abnormal.

[0079] The so-called waveform abnormality of the scanning signal means that the error between the first characteristic value of the standard waveform and the second characteristic value of the scanning signal is greater than the preset threshold value, then the waveform is abnormal. For example, taking amplitude detection as an example, assuming that the first characteristic value of the standard waveform is the first amplitude, the second characteristic value of the scanning signal is the second amplitude, and the preset threshold value is 0.1V (volts), when it is detected that the error between the first amplitude of the standard waveform and the second amplitude of the scanning signal is greater than 0.1V, the waveform of the scanning signal is abnormal. For example, assuming that the first characteristic value of the standard waveform is the first rising edge time, the first rising edge time is 8.38 to 8.6ns (nanoseconds), the second characteristic value of the scanning signal is the second rising edge time, and the preset threshold value is 0.08ns. When it is detected that the error between the first rising edge time of the standard waveform and the second rising edge time of the scanning signal is greater than 0.08ns, the waveform of the scanning signal is abnormal.

[0080] The waveform of the scanning signal is normal when the error between the first characteristic value of the standard waveform and the second characteristic value of the scanning signal is less than or equal to a preset threshold.

[0081] Assuming that the preset threshold is 0, if the error between the first eigenvalue and the second eigenvalue is 0, the waveform of the detected scanning signal is the same as the standard waveform; if the error between the first eigenvalue and the second eigenvalue is within the preset error, the waveform of the detected scanning signal is similar to the standard waveform; if the preset value is greater than 0, the error between the first eigenvalue and the second eigenvalue is greater than 0 and is not within the preset error, the waveform of the detected scanning signal is abnormal.

[0082] S103: When it is detected that the waveform of the scanning signal is abnormal, adjusting the driving voltage signal corresponding to the scanning signal.

[0083] Adjusting the driving voltage signal corresponding to the scanning signal may be adjusting the third characteristic value of the driving voltage signal upward or downward by a preset amplitude according to the error.

[0084] The third characteristic value is at least one of the amplitude, wavelength, rise time and fall time of the driving voltage signal. The third characteristic value can be adjusted until the error between the first characteristic value and the second characteristic value is less than or equal to a preset threshold value, and the waveform of the scanning signal is normal at this time.

[0085] For example, taking amplitude detection as an example, illustratively, the third characteristic value is the third amplitude. First, it is detected that the error between the first amplitude of the standard waveform and the second amplitude of the scanning signal is greater than the preset threshold, then the second amplitude is adjusted up or down by one level by the preset amplitude. It can be understood that the power control module in the display device is used to output the driving voltage signal, and multiple voltage levels can be preset in the power control module, such as 30V, 31V, 32V, 33 and other voltage levels. Then the waveform of the scanning signal output after being adjusted up or down by one level is detected. If it is detected that the error between the second characteristic value and the first characteristic value of the scanning signal is still greater than the preset threshold, the waveform of the scanning signal output is abnormal, and the adjusted driving voltage signal is continuously adjusted until the waveform of the normal scanning signal is finally detected, that is, the error between the amplitude of the waveform of the final scanning signal and the first amplitude of the standard waveform is less than the preset threshold.

[0086] The waveform adjustment method of the scanning signal provided in the present application compares the standard waveform with the waveform of the detected scanning signal to determine whether the waveform of the scanning signal is abnormal. When it is detected to be abnormal, the driving voltage signal corresponding to the scanning signal is adjusted until the waveform is no longer abnormal, thereby solving the problem of abnormal waveform of the scanning signal.

[0087] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0088] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0089] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A driving circuit, comprising a gate driving circuit module and a power control module, wherein the output end of the power control module is connected to the input end of the gate driving circuit module, and the power control module is used to input a driving voltage signal to the gate driving circuit module, characterized in that: The driving circuit further comprises a detection module, the input end of the detection module is connected to the output end of the gate driving circuit module, and the output end of the detection module is connected to the input end of the power control module; The detection module is used to detect the waveform of the scanning signal output by the gate drive circuit module, and input an adjustment instruction to the power control module when the waveform is abnormal; The power control module is also used to adjust the driving voltage signal according to the adjustment instruction; The gate driving circuit module includes a plurality of gate driving submodules, the power control module includes a power control submodule corresponding to the plurality of gate driving submodules one by one, and the detection module includes a plurality of detection submodules corresponding to the plurality of gate driving submodules one by one; The output end of each power control submodule is connected to the input end of the corresponding gate drive submodule, the output end of each gate drive submodule is connected to the input end of the corresponding detection submodule, and the output end of each detection submodule is connected to the input end of the corresponding power control submodule.

2. The driving circuit according to claim 1, characterized in that: The detection module comprises a comparator, a first input end of the comparator is an input end of the detection module, a second input end of the comparator is used to receive a preset standard waveform, and an output end of the comparator is an output end of the detection module.

3. The driving circuit according to claim 1, characterized in that: The detection module includes a voltage testing chip.

4. The driving circuit according to any one of claims 1 to 3, characterized in that: The adjusting the driving voltage signal comprises: At least one of the amplitude, wavelength, rise time and fall time of the driving voltage signal is adjusted.

5. A display device, characterized in that: The display device comprises a display panel and the driving circuit according to any one of claims 1 to 4.

6. A waveform adjustment method, applied to the display device as claimed in claim 5, characterized in that: The waveform adjustment method comprises: Acquire the waveform of the scanning signal; The second characteristic value of the scanning signal is detected according to the first characteristic value of the preset standard waveform; if the error between the first characteristic value and the second characteristic value is greater than a preset threshold value, the waveform of the scanning signal is abnormal; wherein the first characteristic value is at least one of the amplitude, wavelength, rise time and fall time of the standard waveform, and correspondingly, the second characteristic value is at least one of the amplitude, wavelength, rise time and fall time of the scanning signal; When the waveform of the scanning signal is detected to be abnormal, adjusting the driving voltage signal corresponding to the scanning signal; The step of adjusting the driving voltage signal corresponding to the scanning signal comprises: According to the error, the third characteristic value of the driving voltage signal is adjusted upward or downward by a preset amplitude; The third characteristic value is at least one of the amplitude, wavelength, rise time and fall time of the driving voltage signal; After adjusting the driving voltage signal corresponding to the scanning signal, the waveform adjustment method further includes: detecting a second characteristic value of the adjusted scanning signal according to the first characteristic value, wherein the adjusted scanning signal is a scanning signal driven by the adjusted driving voltage signal; If the adjusted scanning signal is abnormal, continue to adjust the adjusted driving voltage signal.

7. The waveform adjustment method according to claim 6, characterized in that: The display device comprises a power supply control module for outputting the driving voltage signal, wherein a plurality of voltage levels are preset in the power supply control module; When the third characteristic value is the amplitude of the driving voltage signal; the step of increasing or decreasing the third characteristic value of the driving voltage signal by a preset amplitude according to the error includes: The power control module is controlled according to the error to increase or decrease the voltage level corresponding to the driving voltage signal by one level.

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