Display device and its driving method

Abstract

This application provides a display device and its driving method. The display device is equipped with a noise acquisition comparator, which can acquire the noise emitted by the display device. When the noise of the display device is within a preset noise range, the comparator sends a first feedback signal to the timing control board. The timing control board can determine that the noise of the display device is large based on the first feedback signal, thereby reducing the refresh rate of the display panel, thereby reducing the voltage drop, reducing the operating frequency of each component and the voltage fluctuation frequency, and eliminating the noise of the display device.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display device and its driving method. Background Technology

[0002] TFT-LCD (thin film transistor-liquid crystal display) is widely used due to its advantages such as long lifespan, mature technology, and low price. With the development of display technology, refresh rates of display devices are increased to improve display quality. Specifically, the refresh rates of existing display devices are getting higher and higher, with devices reaching 165 Hz, 180 Hz, 240 Hz, and even 500 Hz. As the refresh rate of display devices increases, the charging and discharging time of pixels becomes shorter, increasing the workload on electronic components and leading to increased noise. For example, MLCCs (Multiplayer Ceramic Chip Capacitors) are installed on the display panel, power management chip on the printed circuit board, and timing control board in display devices. Due to the inverse piezoelectric effect, under the action of an alternating electric field, they generate deformation or mechanical stress (nanometer-level) that is proportional to the electric field strength. This deformation will resonate with the printed circuit board. When the frequency is within the range that the human ear can hear, a howling sound will occur. More specifically, in HFS (Horizontal Field Switching) products, the in-plane voltage drop will increase at high refresh rates, and the voltage fluctuation and operating frequency change of the MLCC capacitors in the circuit will also increase. This will lead to increased noise, which will be amplified through resonance with the printed circuit board, resulting in a howling sound, and thus affecting the user experience.

[0003] Therefore, existing high refresh rate display devices have a technical problem where resonance between components can easily occur, resulting in noise. Summary of the Invention

[0004] This application provides a display device and its driving method to solve the technical problem that existing high refresh rate display devices are prone to resonance and noise between components.

[0005] This application provides a display device, which includes:

[0006] Display panel;

[0007] The timing control board is connected to the display panel;

[0008] A noise acquisition comparator is electrically connected to the timing control board. The noise acquisition comparator is used to acquire the noise of the display device and send a first feedback signal to the timing control board when the noise of the display device is within a preset noise range.

[0009] The timing control board is used to receive the first feedback signal from the noise acquisition comparator and reduce the refresh rate of the display panel based on the first feedback signal.

[0010] In some embodiments, the noise acquisition comparator includes a noise acquisition module and a comparison calculation module. The noise acquisition module is electrically connected to the comparison calculation module. The noise acquisition module is used to acquire the noise of the display device, and the comparison calculation module is used to compare the noise of the display device with the preset noise range.

[0011] In some embodiments, the noise acquisition comparator further includes an acoustic-to-electrical conversion module, which is electrically connected to the noise acquisition module and to the comparison calculation module. The noise acquisition module is further configured to send noise from the display device to the acoustic-to-electrical conversion module, which converts the noise from the display device into an ambient electrical signal and sends the ambient electrical signal to the comparison calculation module. The comparison calculation module is configured to compare the ambient electrical signal with a preset electrical signal, wherein the preset electrical signal is an electrical signal corresponding to the preset noise range.

[0012] In some embodiments, the timing control board includes a data module and an adjustment module. The data module is electrically connected to the comparison operation module and is used to store a preset electrical signal. The adjustment module is used to receive a first feedback signal from the comparison operation module and reduce the refresh rate of the display panel based on the first feedback signal.

[0013] In some embodiments, the timing control board includes a noise storage module, which is electrically connected to the comparison operation module, and is used to store a preset noise range.

[0014] In some embodiments, the noise acquisition module includes a microphone.

[0015] In some embodiments, the timing control board includes a maintenance module electrically connected to the noise acquisition comparator. The noise acquisition comparator is further configured to send a second feedback signal to the timing control board when the noise of the display device is outside a preset noise range. The maintenance module is configured to receive the second feedback signal and maintain the refresh rate of the display panel based on the second feedback signal.

[0016] In some embodiments, the display device is provided with an air outlet, and the noise acquisition comparator is disposed at the air outlet of the display device.

[0017] In some embodiments, the preset noise range is 20 Hz to 20000 Hz.

[0018] Meanwhile, this application provides a driving method for a display device, which is used to drive a display device as described in any of the above embodiments. The driving method for the display device includes:

[0019] Send noise acquisition signals and receive feedback signals returned by the noise acquisition comparator;

[0020] When the feedback signal is the first feedback signal, a refresh rate control signal is sent to the display panel to reduce the refresh rate of the display panel.

[0021] Beneficial Effects: This application provides a display device and its driving method. The display device includes a display panel, a timing control board, and a noise acquisition comparator. The timing control board is connected to the display panel, and the noise acquisition comparator is electrically connected to the timing control board. The noise acquisition comparator is used to acquire the noise of the display device and, when the noise of the display device is within a preset noise range, sends a first feedback signal to the timing control board. The timing control board receives the first feedback signal from the noise acquisition comparator and reduces the refresh rate of the display panel based on the first feedback signal. This application, by setting a noise acquisition comparator in the display device, enables the noise acquisition comparator to acquire the noise emitted by the display device and, when the noise of the display device is within a preset noise range, sends a first feedback signal to the timing control board. This allows the timing control board to determine that the noise of the display device is large based on the first feedback signal, thereby reducing the refresh rate of the display panel, reducing voltage drop, reducing the operating frequency of various components and voltage fluctuation frequency, and eliminating the noise of the display device. Attached Figure Description

[0022] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0023] Figure 1 This is a first schematic diagram of a display device provided in an embodiment of this application.

[0024] Figure 2 This is a second schematic diagram of a display device provided in an embodiment of this application.

[0025] Figure 3 A flowchart of a driving method for a display device provided in an embodiment of this application. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0027] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the term "connection" refers to a direct connection between two things, and "electrical connection" refers to a connection that can be direct or indirect through an intermediate medium. The term "connection" should be interpreted broadly; for example, it can be a fixed connection, a detachable connection, or an integral connection. The term "electrical connection" should also be interpreted broadly; for example, it can be a direct connection or an indirect connection through an intermediate medium, and can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0029] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0031] This application addresses the technical problem of noise caused by resonance between components in existing high refresh rate display devices by providing a display device and its driving method to solve the above-mentioned technical problem.

[0032] like Figure 1 As shown, this application embodiment provides a display device, the display device 1 including:

[0033] Display panel 11;

[0034] The timing control board 12 is connected to the display panel 11;

[0035] The noise acquisition comparator 13 is electrically connected to the timing control board 12. The noise acquisition comparator 13 is used to acquire the noise of the display device and send a first feedback signal to the timing control board 12 when the noise of the display device 1 is within a preset noise range.

[0036] The timing control board 12 is used to receive the first feedback signal from the noise acquisition comparator 13 and reduce the refresh rate of the display panel 11 based on the first feedback signal.

[0037] This application provides a display device that includes a noise acquisition comparator. The comparator can acquire the noise emitted by the display device and send a first feedback signal to a timing control board when the noise of the display device is within a preset noise range. This allows the timing control board to determine that the noise of the display device is too high based on the first feedback signal, thereby reducing the refresh rate of the display panel, reducing the voltage drop, reducing the operating frequency of each component and the voltage fluctuation frequency, and eliminating the noise of the display device.

[0038] Specifically, the noise acquisition comparator is a physical structure housed within the display device. It is used to acquire noise within the display device, rather than acquiring external noise from outside the display device. The noise acquisition comparator can be electrically connected to the timing control board. In specific structures, this connection can be achieved through a communication port, a circuit connection, or signal transmission via communication; this application embodiment is not limited in this regard.

[0039] Specifically, the noise acquisition comparator can be normally open, for example, when the display device is on, the noise acquisition comparator is also turned on to acquire the noise of the display device. Alternatively, the noise acquisition comparator can be turned on after receiving a control signal, for example, after receiving a control signal from the timing control board, the central processing unit, or other control modules.

[0040] Specifically, for example, the timing control board includes a sending module that sends a noise acquisition signal to a noise acquisition comparator, enabling the noise acquisition comparator to acquire the noise of the display device.

[0041] Specifically, the preset noise range refers to the noise range that affects the customer experience. For instance, the range of sound frequencies audible to the human ear is 20 Hz to 20,000 Hz, so the preset noise range can be set to 20 Hz to 20,000 Hz. However, the actual range of sound frequencies that the human ear can clearly hear may be lower than this range, thus narrowing the noise range. For example, the preset noise range can be set to 100 Hz to 10,000 Hz. Furthermore, the above preset noise range only considers frequency, but the embodiments of this application are not limited to this. The magnitude of the noise can also be determined, and accordingly, whether the noise of the display device exceeds the preset noise range can be determined, thereby adjusting the refresh rate of the display panel.

[0042] In some embodiments, such as Figure 2 As shown, the noise acquisition comparator 13 includes a noise acquisition module 131 and a comparison calculation module 132. The noise acquisition module 131 and the comparison calculation module 132 are electrically connected. The noise acquisition module 131 is used to acquire the noise of the display device, and the comparison calculation module 132 is used to compare the noise of the display device 1 with the preset noise range. By including a noise acquisition module and a comparison calculation module in the noise acquisition comparator, the noise acquisition module can acquire the noise of the display device, and the comparison calculation module can compare the noise of the display device with the preset noise range. Therefore, the refresh rate of the display panel can be adjusted according to the noise of the display device and the preset noise range, thereby avoiding excessive noise from the display device that leads to a poor user experience.

[0043] Specifically, the above embodiment is illustrated by taking the example of setting the comparison operation module in the noise acquisition comparator. However, the embodiments of this application are not limited to this. The comparison operation module can be set in the timing control board. In this case, the noise acquisition comparator is used to acquire the noise of the display device, and the timing control board is used to compare the noise of the display device with the preset noise range.

[0044] In some embodiments, such as Figure 2 As shown, the noise acquisition comparator 13 further includes a sound-to-electricity conversion module 133, which is electrically connected to the noise acquisition module 131 and to the comparison calculation module 132. The noise acquisition module 131 is also used to send the noise from the display device 1 to the sound-to-electricity conversion module 133. The sound-to-electricity conversion module 133 is used to convert the noise from the display device 1 into an ambient electrical signal and send the ambient electrical signal to the comparison calculation module 132. The comparison calculation module 132 is used to compare the ambient electrical signal with a preset electrical signal, where the preset electrical signal corresponds to a preset noise range. By setting the sound-to-electricity conversion module and electrically connecting it to the noise acquisition module, after the noise acquisition module acquires the noise from the display device, the sound-to-electricity conversion module can convert the noise into an electrical signal. Furthermore, the connection between the sound-to-electricity conversion module and the comparison calculation module allows for a more accurate determination of whether the noise of the display device is within the preset noise range through the comparison of the electrical signals.

[0045] Specifically, by using a sound-to-electricity conversion module to convert the noise of the display device into an ambient electrical signal and comparing the ambient electrical signal with a preset electrical signal, the accuracy of noise detection can be improved, thereby improving the control accuracy of the display device.

[0046] Specifically, the noise acquisition module, the sound-to-electric conversion module, and the comparison and operation module can all be physical structures. The noise acquisition module can be any physical structure that acquires sound, such as a microphone. The sound-to-electric conversion module can be any physical structure that converts sound into electrical signals, such as a piezoelectric ceramic transducer, an electret condenser microphone, or a permanent magnet loudspeaker. The sound-to-electric conversion module can also include a signal amplification circuit, a switch control circuit, and an execution circuit. The signal amplification circuit is used to amplify the signal output by the sound-to-electric converter, the switch control circuit is used to control whether the electrical signal converted by the sound-to-electric converter is output, and the execution circuit is used to control whether the sound-to-electric conversion module is working. The comparison and operation module can be any comparator, such as an operational comparator.

[0047] Specifically, the noise acquisition module and the acoustic-to-electric conversion module can be two parts of the same structure. For example, if the components include both a microphone and an acoustic-to-electric converter, then it includes both a noise acquisition module and an acoustic-to-electric conversion module.

[0048] In some embodiments, such as Figure 2 As shown, the timing control board 12 includes a data module 121 and an adjustment module 122. The data module 121 is electrically connected to the comparison calculation module 132. The data module 121 is used to store a preset electrical signal. The adjustment module 122 is used to receive a first feedback signal from the comparison calculation module 132 and reduce the refresh rate of the display panel based on the first feedback signal. By including a data module in the timing control board, the data module can store a preset electrical signal, thereby enabling the comparison calculation module to receive the preset electrical signal stored in the data module, perform corresponding comparison calculations, and feed back the comparison calculation result to the adjustment module. This allows the adjustment module to adjust the refresh rate of the display panel according to the feedback result, preventing noise from the display device from affecting its use.

[0049] Specifically, the above embodiment is illustrated by the example of the comparison operation module being able to send a feedback signal. However, the embodiments of this application are not limited to this. A feedback module can be set in the noise acquisition module or the timing control board. The feedback module is electrically connected to the comparison operation module, receives the output signal of the comparison operation module, and outputs a feedback signal according to the output result of the comparison operation module. For example, if the comparison operation module inputs 1 and 2 and outputs 2, then the feedback module outputs a corresponding feedback signal when it receives 2.

[0050] Specifically, the data module can be a physical structure, such as a register. The adjustment module can be a virtual module, which can control the circuitry and other components by sending control signals, thereby adjusting the refresh rate of the display panel.

[0051] Specifically, the comparison operation module and the data module can communicate in one direction or in two directions. The comparison operation module can send signals to the timing control board to receive data returned by the data module, or the data module can actively send data to the comparison operation module.

[0052] In some embodiments, the timing control board includes a noise storage module electrically connected to the comparison calculation module, and the noise storage module is used to store a preset noise range. By including a noise storage module in the timing control board and electrically connecting the noise storage module to the comparison calculation module, when the noise acquisition comparator directly compares the noise of the display device with the preset noise range, the preset noise range can be directly extracted from the noise storage module. This allows for a comparison between the noise of the display device and the preset noise range, reducing the refresh rate of the display panel and eliminating the noise when the noise of the display device affects its use.

[0053] In some embodiments, the noise acquisition module includes a microphone, which enables the noise acquisition module to acquire noise from the display device, thereby enabling the determination based on the acquired noise from the display device and correspondingly reducing the noise.

[0054] In some embodiments, the timing control board includes a maintenance module electrically connected to the noise acquisition comparator. The noise acquisition comparator is further configured to send a second feedback signal to the timing control board when the noise of the display device is outside a preset noise range. The maintenance module is configured to receive the second feedback signal and maintain the refresh rate of the display panel based on the second feedback signal. By including a maintenance module in the timing control board, and electrically connecting the maintenance module to the noise acquisition comparator, the refresh rate of the display panel can be maintained when the noise of the display device is outside a preset noise range, thus avoiding affecting the display effect.

[0055] Specifically, the maintenance module and the adjustment module can be the same module, both belonging to the same module of the timing control board that makes different adjustments based on different feedback signals.

[0056] Specifically, adjusting the refresh rate of a display panel can be achieved by changing the input of the display panel's signal line, for example, by changing the original two-frame duration of the display panel to one-frame duration, thereby reducing the refresh rate.

[0057] Specifically, the refresh rate of the display panel includes at least one relatively high refresh rate and one relatively low refresh rate. For example, the refresh rate of the display panel includes 60 Hz and 120 Hz. However, the embodiments of this application are not limited to this. The refresh rate of the display panel may include 60 Hz, 120 Hz, 165 Hz, 180 Hz, 240 Hz, and 500 Hz. When reducing the refresh rate of the display panel, it can be reduced by one level or multiple levels. For example, when the refresh rate of the display panel is 240 Hz, if the noise of the display device is detected to be within a preset noise range, the refresh rate of the display panel can be reduced to 180 Hz, or it can be reduced to 120 Hz or even 60 Hz. Then the noise of the display device is detected again until the noise of the display device meets the requirements.

[0058] In some embodiments, the display device is provided with an air outlet, and the noise acquisition comparator is disposed at the air outlet of the display device. Considering that noise is easily transmitted from the air outlet, the accuracy of noise detection can be improved by placing the noise acquisition comparator at the air outlet of the display device.

[0059] Specifically, the display device in this application embodiment can be a large-sized display device or a small-sized display device, and the noise acquisition comparator can be set at the air outlet or microphone of each display device.

[0060] In some embodiments, the preset noise range is 20 Hz to 20,000 Hz. Since the frequency range of sound that the human ear can hear is 20 Hz to 20,000 Hz, the preset noise range can be set to 20 Hz to 20,000 Hz. When the display device generates noise within the above frequency range, the frequency of the display panel is adjusted to reduce the noise.

[0061] Specifically, the above embodiments have provided detailed descriptions of the display device from various structural perspectives. It is understood that when there is no conflict between the embodiments, the embodiments can be combined. For example, the noise acquisition module includes a microphone, and the display device is provided with an air outlet, and the noise acquisition comparator is located at the air outlet of the display device.

[0062] Meanwhile, this application provides a driving method for a display device, which is used to drive any of the display devices described in the above embodiments, such as... Figure 3 As shown, the driving method of the display device includes:

[0063] S1, send the noise acquisition signal and receive the feedback signal returned by the noise acquisition comparator;

[0064] S2, when the feedback signal is the first feedback signal, sends a refresh rate control signal to the display panel to reduce the refresh rate of the display panel.

[0065] This application provides a driving method for a display device. The driving method sends a noise acquisition signal and receives a feedback signal returned by a noise acquisition comparator. When the feedback signal is a first feedback signal, it can be determined that the noise of the display device is large. Then, a refresh rate control signal can be sent to the display panel to reduce the refresh rate of the display panel accordingly, thereby reducing the voltage drop, reducing the operating frequency of each component and the voltage fluctuation frequency, and eliminating the noise of the display device.

[0066] Specifically, the timing control board includes a sending module and an adjustment module. The sending module is used to send noise acquisition signals and receive feedback signals returned by the noise acquisition comparator. The adjustment module is used to send a refresh rate control signal to the display panel when the feedback signal is the first feedback signal, so as to reduce the refresh rate of the display panel.

[0067] Specifically, the operation of the display device is explained. The noise acquisition comparator can operate when the display device is turned on, or the timing control board can send a noise acquisition signal to the noise acquisition comparator to make it work. When the noise acquisition comparator is working, it continuously acquires the noise of the display device and compares the noise of the display device with a preset noise range. Then, it sends a feedback signal to the timing control board. When the feedback signal indicates that the noise of the display device is within the preset noise range, the timing control board will adjust the signals sent to the display panel, including but not limited to control signals and data signals, thereby reducing the refresh rate of the display panel. When the feedback signal indicates that the noise of the display device is outside the preset noise range, the timing control board cannot adjust the signals sent to the display panel and simply keeps the signals sent to the display panel unchanged.

[0068] As can be seen from the above embodiments:

[0069] This application provides a display device and its driving method. The display device includes a display panel, a timing control board, and a noise acquisition comparator. The timing control board is connected to the display panel, and the noise acquisition comparator is electrically connected to the timing control board. The noise acquisition comparator is used to acquire the noise of the display device and, when the noise of the display device is within a preset noise range, sends a first feedback signal to the timing control board. The timing control board receives the first feedback signal from the noise acquisition comparator and reduces the refresh rate of the display panel based on the first feedback signal. By setting a noise acquisition comparator in the display device, this application enables the noise acquisition comparator to acquire the noise emitted by the display device and, when the noise of the display device is within a preset noise range, sends a first feedback signal to the timing control board. This allows the timing control board to determine that the noise of the display device is high based on the first feedback signal, thereby reducing the refresh rate of the display panel, reducing voltage drop, lowering the operating frequency of various components and voltage fluctuation frequency, and eliminating the noise of the display device.

[0070] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0071] The above provides a detailed description of a display device and its driving method according to the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A display device, characterized by comprising: The display device comprises: a display panel; a timing control board connected with the display panel; a noise collection comparator electrically connected with the timing control board, the noise collection comparator being configured to collect noise of the display device and send a first feedback signal to the timing control board when the noise of the display device is within a preset noise range; wherein the timing control board is configured to receive the first feedback signal of the noise collection comparator and reduce the refresh rate of the display panel based on the first feedback signal.

2. The display device of claim 1, wherein, The noise collection comparator comprises a noise collection module and a comparison operation module, the noise collection module being electrically connected with the comparison operation module, the noise collection module being configured to collect noise of the display device, and the comparison operation module being configured to compare the noise of the display device with the preset noise range.

3. The display device of claim 2, wherein, The noise collection comparator further comprises an acoustic-electric conversion module, the acoustic-electric conversion module being electrically connected with the noise collection module and the comparison operation module, the noise collection module being further configured to send the noise of the display device to the acoustic-electric conversion module, the acoustic-electric conversion module being configured to convert the noise of the display device into an environmental electric signal and send the environmental electric signal to the comparison operation module, and the comparison operation module being configured to compare the environmental electric signal with a preset electric signal, the preset electric signal being an electric signal corresponding to the preset noise range.

4. The display device of claim 3, wherein, The timing control board comprises a data module and an adjustment module, the data module being electrically connected with the comparison operation module, the data module being configured to store the preset electric signal, and the adjustment module being configured to receive the first feedback signal of the comparison operation module and reduce the refresh rate of the display panel based on the first feedback signal.

5. The display device of claim 2, wherein, The timing control board comprises a noise storage module, the noise storage module being electrically connected with the comparison operation module, and the noise storage module being configured to store the preset noise range.

6. The display device of claim 2, wherein, The noise collection module comprises a microphone.

7. The display device of claim 1, wherein The timing control board comprises a maintenance module, the maintenance module being electrically connected with the noise collection comparator, the noise collection comparator being further configured to send a second feedback signal to the timing control board when the noise of the display device is outside the preset noise range, and the maintenance module being configured to receive the second feedback signal and maintain the refresh rate of the display panel based on the second feedback signal.

8. The display device of claim 1, wherein The display device is provided with an air outlet, and the noise collection comparator is arranged at the air outlet of the display device.

9. The display device of claim 1, wherein The preset noise range is 20 Hz to 20,000 Hz.

10. A driving method of a display device, comprising: A method for driving the display device as claimed in any one of claims 1 to 9, the method comprising: sending a noise collection signal and receiving a feedback signal returned by the noise collection comparator; when the feedback signal is a first feedback signal, sending a refresh rate control signal to the display panel to reduce the refresh rate of the display panel.

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