Brightness switching method, control equipment and display device

Abstract

The invention discloses a display device, a brightness switching method thereof and control equipment. The brightness switching method comprises the following steps: obtaining at least one transition brightness according to first brightness and second brightness; sequentially switching the display brightness of the display device from the first brightness to each transition brightness; and switching the display brightness of the display device from the transition brightness to the second brightness. By adjusting the light-emitting control signal and setting the transition brightness between the first brightness and the second brightness, picture flicker caused when the first brightness is directly switched to the second brightness can be avoided.

Description

Technical Field

[0001] The present application belongs to the technical field of display devices, and in particular, relates to a brightness switching method, a control device and a display apparatus. Background Art

[0002] Currently, organic light emitting diodes (OLED) and flat panel display devices based on light emitting diodes (LED) and other technologies are widely used and become the mainstream in display devices due to their advantages such as high image quality, power saving, thin body and wide application range. Summary of the invention

[0003] The purpose of the present application is to provide a brightness switching method, a control device and a display device to solve the problems existing in the prior art.

[0004] A first aspect of an embodiment of the present application provides a brightness switching method for switching the display brightness of a display device from a first brightness to a second brightness, the brightness switching method comprising: obtaining at least one transition brightness according to the first brightness and the second brightness; wherein the number of pulses of a light-emitting control signal corresponding to the transition brightness is less than the number of pulses of the light-emitting control signal corresponding to the first brightness, and the duty cycle of the light-emitting control signal corresponding to the transition brightness is greater than the duty cycle of the light-emitting control signal corresponding to the first brightness and less than the duty cycle of the light-emitting control signal corresponding to the second brightness; switching the display brightness of the display device from the first brightness to each of the transition brightnesses in sequence; and switching the display brightness of the display device from the transition brightness to the second brightness.

[0005] In one embodiment, the first brightness is smaller than the second brightness.

[0006] In one embodiment, the difference between the first brightness and the second brightness is not less than 400 nit; preferably, the first brightness is 1200 nit, and the second brightness is 1600 nit.

[0007] In one embodiment, the number of pulses of the light emitting control signal corresponding to the first brightness is greater than the number of pulses of the light emitting control signal corresponding to the second brightness.

[0008] In one embodiment, the number of pulses of the light emitting control signal corresponding to the first brightness is 12 pulses, and the number of pulses of the light emitting control signal corresponding to the second brightness is 3 pulses.

[0009] In one embodiment, obtaining at least one transition brightness based on the first brightness and the second brightness includes: obtaining a first transition brightness, a second transition brightness and a third transition brightness based on the first brightness and the second brightness; switching the display brightness of the display device from the first brightness to each of the transition brightnesses in sequence includes: switching the display brightness of the display device from the first brightness, the first transition brightness, the second transition brightness to the third transition brightness in sequence.

[0010] In one embodiment, the number of pulses of the light-emitting control signal corresponding to the first transition brightness, the number of pulses of the light-emitting control signal corresponding to the second transition brightness, the number of pulses of the light-emitting control signal corresponding to the third transition brightness, and the number of pulses of the light-emitting control signal corresponding to the second brightness are all equal; the duty cycle of the light-emitting control signal corresponding to the first transition brightness is equal to the duty cycle of the light-emitting control signal corresponding to the first brightness; the duty cycle of the light-emitting control signal corresponding to the second transition brightness is greater than the duty cycle of the light-emitting control signal corresponding to the first transition brightness; and the duty cycle of the light-emitting control signal corresponding to the third transition brightness is greater than the duty cycle of the light-emitting control signal corresponding to the second transition brightness.

[0011] In one embodiment, the pulse number of the light-emitting control signal corresponding to the second transition brightness is smaller than the pulse number of the light-emitting control signal corresponding to the first transition brightness; the pulse number of the light-emitting control signal corresponding to the third transition brightness is smaller than the pulse number of the light-emitting control signal corresponding to the second transition brightness; the pulse number of the light-emitting control signal corresponding to the third transition brightness is equal to the pulse number of the light-emitting control signal corresponding to the second brightness; the duty cycle of the light-emitting control signal corresponding to the first transition brightness is greater than the duty cycle of the light-emitting control signal corresponding to the first brightness; the duty cycle of the light-emitting control signal corresponding to the second transition brightness is greater than the duty cycle of the light-emitting control signal corresponding to the first transition brightness; the duty cycle of the light-emitting control signal corresponding to the third transition brightness is greater than the duty cycle of the light-emitting control signal corresponding to the second transition brightness.

[0012] A second aspect of an embodiment of the present application provides a control device for controlling the display brightness of a display device from a first brightness to a second brightness, the control device comprising: a calculation module for obtaining at least one transition brightness according to the first brightness and the second brightness; wherein the number of pulses of the light-emitting control signal corresponding to the transition brightness is less than the number of pulses of the light-emitting control signal corresponding to the first brightness, and the duty cycle of the light-emitting control signal corresponding to the transition brightness is greater than the duty cycle of the light-emitting control signal corresponding to the first brightness; a first control module for switching the display brightness of the display device from the first brightness to each of the transition brightnesses in sequence; and a second control module for switching the display brightness of the display device from the transition brightness to the second brightness.

[0013] A third aspect of an embodiment of the present application provides a display device, including a memory and a processor, wherein the processor is connected to the memory, the memory stores a computer program, and the computer program is executed by the processor to implement the brightness switching method as described above.

[0014] A third aspect of an embodiment of the present application provides a display device, including a memory and a processor, wherein the processor is connected to the memory, and the memory stores a computer program, and when the computer program is executed by the processor, the brightness switching method as described above is implemented.

[0015] Compared with the prior art, the embodiments of the present application have the following beneficial effects: by adjusting the light control signal and setting a transition brightness between the first brightness and the second brightness, the screen flickering caused by directly switching from the first brightness to the second brightness can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A flowchart of a brightness switching method provided in an embodiment of the present application;

[0017] Figure 2 A waveform diagram of a light emitting control signal corresponding to each brightness provided in an embodiment of the present application;

[0018] Figure 3 Another waveform diagram of a light emitting control signal corresponding to each brightness provided by an embodiment of the present application;

[0019] Figure 4 A schematic diagram of a control device provided in one embodiment of the present application;

[0020] Figure 5 A schematic diagram of a display device provided in one embodiment of the present application.

[0021] Explanation of the reference numerals: 10, control device; 20, display device; 100, computing module; 200, first control module; 300, second control module; 400, memory; 500, processor; 600, computer program; 700, display panel. DETAILED DESCRIPTION

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] In the prior art, in order to improve product performance and improve the eye protection function of the screen, OLED (Organic Light-Emitting Diode) displays use a segmented EM dimming solution.

[0027] Among them, conventional EM dimming means keeping the current unchanged, changing the time the current passes through the OLED device within a frame, and adding a high refresh rate to visually change the display brightness. Specifically, the EM dimming control signal can be used to control the on and off of the corresponding switch device. When the switch device is on, power can be supplied to the OLED device, and when the switch device is off, the power supply to the OLED device is disconnected.

[0028] The segmented EM dimming is to make the corresponding EM dimming control signal have different pulse numbers at different brightness. The pulse number of the EM dimming control signal specifically refers to the number of pulses in the EM dimming control signal in one pixel refresh cycle. For example, if the pulse number of the EM dimming control signal is 3Pulse, it means that the EM dimming control signal has 3 pulses in one pixel refresh cycle.

[0029] For example, if the existing segmented EM dimming uses 12 EM pulses when the brightness is 90 nit to 1200 nit (i.e., the number of pulses of the EM dimming control signal is 12 pulses), and uses 3 EM pulses when the brightness is 1600 nit (i.e., the number of pulses of the EM dimming control signal is 3 pulses). If the gamma value remains unchanged, when the brightness switches from 1200 nit to 1600 nit, the rapid change in the number of pulses will easily lead to a sudden change in the duty cycle of the EM dimming control signal, causing screen flickering.

[0030] It should be noted that when the EM dimming control signal is at a high level, the corresponding switch device can be controlled to be turned off to stop the power supply to the OLED device, and when the EM dimming control signal is at a low level, the corresponding switch device can be controlled to be turned on to restore the power supply to the OLED device. The duty cycle of the EM dimming control signal specifically refers to the duty cycle of the low level of the EM dimming control signal.

[0031] Figure 1 A flow chart of a brightness switching method provided by an embodiment of the present application is shown. For ease of description, only the part related to the present embodiment is shown, which is described in detail as follows:

[0032] A brightness switching method for a display device is used to switch the display brightness of the display device from a first brightness to a second brightness.

[0033] The brightness switching method includes steps S100 to S300.

[0034] Step S100: obtaining at least one transition brightness according to the first brightness and the second brightness.

[0035] Among them, the pulse number of the light-emitting control signal corresponding to the transition brightness is smaller than the pulse number of the light-emitting control signal corresponding to the first brightness, and the duty cycle of the light-emitting control signal corresponding to the transition brightness is greater than the duty cycle of the light-emitting control signal corresponding to the first brightness and smaller than the duty cycle of the light-emitting control signal corresponding to the second brightness.

[0036] Step S200: switching the display brightness of the display device from the first brightness to various transition brightnesses in sequence.

[0037] Step S300: Switching the display brightness of the display device from the transition brightness to the second brightness.

[0038] By adjusting the light control signal, a transition brightness is set between the first brightness and the second brightness. When the number of pulses of the light control signal corresponding to the transition brightness is smaller than the number of pulses of the light control signal corresponding to the first brightness, and the duty cycle of the light control signal corresponding to the transition brightness is larger than the duty cycle of the light control signal corresponding to the first brightness, and the duty cycle of the light control signal corresponding to the transition brightness is smaller than the duty cycle of the light control signal corresponding to the first brightness, the switching from the first brightness to the second brightness can be made smoother, thereby avoiding screen flickering caused by directly switching from the first brightness to the second brightness.

[0039] The light emitting control signal may specifically be an EM dimming control signal for performing EM dimming.

[0040] In one embodiment, the first brightness is lower than the second brightness.

[0041] When the display screen switches from low brightness to high brightness, if the brightness is switched directly without changing gamma, the rapid increase in the duty cycle of the light control signal may cause screen flickering, which may make it difficult for some users to quickly adapt to the change in light, affecting the screen perception of the display device.

[0042] By setting a transition brightness between the first brightness and the second brightness, the brightness change can be smoother, thereby improving the user experience of the display device.

[0043] In one embodiment, the difference between the first brightness and the second brightness is not less than 400 nit. Preferably, the first brightness is 1200 nit and the second brightness is 1600 nit.

[0044] It can be understood that the greater the difference between the first brightness and the second brightness, the more obvious the flicker produced without transition brightness.

[0045] When the brightness switches from 1200 nit to 1600 nit, setting the transition brightness can make the brightness change smoother without noticeable flicker.

[0046] In one embodiment, the number of pulses of the light emitting control signal corresponding to the first brightness is greater than the number of pulses of the light emitting control signal corresponding to the second brightness.

[0047] By reasonably configuring the pulse number of the light emitting control signal corresponding to the display brightness, the eye protection effect of the display device at low brightness can be improved.

[0048] In one embodiment, the number of pulses of the light emitting control signal corresponding to the first brightness is 12 pulses, and the number of pulses of the light emitting control signal corresponding to the second brightness is 3 pulses.

[0049] In low brightness conditions, increasing the number of pulses of the light-emitting control signal can reduce the human eye's perception of the on and off of the OLED device, thereby improving the eye protection effect of the display device.

[0050] In one embodiment, step S100 specifically includes: obtaining a first transition brightness, a second transition brightness, and a third transition brightness according to the first brightness and the second brightness.

[0051] Step S200 specifically includes: switching the display brightness of the display device from a first brightness to a first transition brightness, a second transition brightness, and a third transition brightness in sequence.

[0052] Specifically, the specific brightness of the first transition brightness, the second transition brightness, and the third transition brightness can be configured by configuring the duty cycle of the light control signal corresponding to the first transition brightness, the second transition brightness, and the third transition brightness.

[0053] By setting the first transition brightness, the second transition brightness and the third transition brightness between the first brightness and the second brightness, the brightness change can be made smoother.

[0054] In some embodiments, the first brightness, the first transition brightness, the second transition brightness, the third transition brightness, and the second brightness may be in a linear relationship to further improve the smoothness of the brightness change.

[0055] In some embodiments, more transition brightnesses may be included between the first brightness and the second brightness, and the number of transition brightnesses may be set according to actual needs.

[0056] In one embodiment, if Figure 2 As shown, the number of pulses of the light-emitting control signal corresponding to the first transition brightness, the number of pulses of the light-emitting control signal corresponding to the second transition brightness, the number of pulses of the light-emitting control signal corresponding to the third transition brightness, and the number of pulses of the light-emitting control signal corresponding to the second brightness are all equal.

[0057] The duty cycle of the light control signal corresponding to the first transition brightness is equal to the duty cycle of the light control signal corresponding to the first brightness. The duty cycle of the light control signal corresponding to the second transition brightness is greater than the duty cycle of the light control signal corresponding to the first transition brightness. The duty cycle of the light control signal corresponding to the third transition brightness is greater than the duty cycle of the light control signal corresponding to the second transition brightness.

[0058] This embodiment adopts a method of direct pulse cutting. According to the pulse number of the light-emitting control signal corresponding to the second brightness, the pulse number of the light-emitting control signal corresponding to each transition brightness is directly configured. Then, the pulse width of the light-emitting control signal corresponding to different transition brightnesses is adjusted, thereby adjusting the duty cycle of the light-emitting control signal corresponding to each transition brightness, so that the display device can be switched to each transition brightness.

[0059] Specifically, based on the first brightness, the duty cycle of the light control signal can be reduced by 4H, and the number of pulses can be changed to 3Pulse, so that the display device switches to the first transition brightness. Then the duty cycle of the light control signal is linearly increased, so that the display device switches to the second transition brightness, the third transition brightness and the second brightness in sequence, completing the brightness switch from the first brightness to the second brightness.

[0060] In some embodiments, Figure 3 As shown, the duty cycle of the light-emitting control signal corresponding to the first transition brightness, the duty cycle of the light-emitting control signal corresponding to the second transition brightness, the duty cycle of the light-emitting control signal corresponding to the third transition brightness, and the duty cycle of the light-emitting control signal corresponding to the second brightness are linearly related.

[0061] In one embodiment, the number of pulses of the light control signal corresponding to the second transition brightness is less than the number of pulses of the light control signal corresponding to the first transition brightness. The number of pulses of the light control signal corresponding to the third transition brightness is less than the number of pulses of the light control signal corresponding to the second transition brightness. The number of pulses of the light control signal corresponding to the third transition brightness is equal to the number of pulses of the light control signal corresponding to the second brightness.

[0062] The duty cycle of the light control signal corresponding to the first transition brightness is greater than the duty cycle of the light control signal corresponding to the first brightness. The duty cycle of the light control signal corresponding to the second transition brightness is greater than the duty cycle of the light control signal corresponding to the first transition brightness. The duty cycle of the light control signal corresponding to the third transition brightness is greater than the duty cycle of the light control signal corresponding to the second transition brightness.

[0063] This embodiment adopts a method of gradually changing the number of pulses, and by reasonably configuring the number of pulses of the light emitting control signal corresponding to each transition brightness, each transition brightness between the first brightness and the second brightness can be obtained.

[0064] In some embodiments, the pulse number of the light emitting control signal corresponding to the first transition brightness is 9 pulses, the pulse number of the light emitting control signal corresponding to the second transition brightness is 6 pulses, and the pulse number of the light emitting control signal corresponding to the third transition brightness is 3 pulses.

[0065] Figure 4A schematic diagram of a control device provided in an embodiment of the present application is shown. For ease of explanation, only the parts related to the present embodiment are shown, which are described in detail as follows:

[0066] A control device is provided for controlling the display brightness of a display device to be adjusted from a first brightness to a second brightness. The control device comprises: a calculation module 100, a first control module 200 and a second control module 300.

[0067] The calculation module 100 is used to obtain at least one transition brightness according to the first brightness and the second brightness.

[0068] Among them, the pulse number of the light-emitting control signal corresponding to the transition brightness is smaller than the pulse number of the light-emitting control signal corresponding to the first brightness, and the duty cycle of the light-emitting control signal corresponding to the transition brightness is greater than the duty cycle of the light-emitting control signal corresponding to the first brightness.

[0069] The first control module 200 is used to switch the display brightness of the display device from the first brightness to various transition brightnesses in sequence.

[0070] The second control module 300 is used to switch the display brightness of the display device from the transition brightness to the second brightness.

[0071] By adjusting the light control signal, a transition brightness is set between the first brightness and the second brightness. When the number of pulses of the light control signal corresponding to the transition brightness is smaller than the number of pulses of the light control signal corresponding to the first brightness, and the duty cycle of the light control signal corresponding to the transition brightness is larger than the duty cycle of the light control signal corresponding to the first brightness, and the duty cycle of the light control signal corresponding to the transition brightness is smaller than the duty cycle of the light control signal corresponding to the first brightness, the switching from the first brightness to the second brightness can be made smoother, thereby avoiding screen flickering caused by directly switching from the first brightness to the second brightness.

[0072] Figure 5 A schematic diagram of a display device provided by an embodiment of the present application is shown. For the sake of convenience, only the part related to the present embodiment is shown, which is described in detail as follows:

[0073] A display device 20 includes a memory 400 and a processor 500. The processor 500 is connected to the memory 400. The memory 400 stores a computer program 600. When the computer program 600 is executed by the processor 500, a brightness switching method as described in any of the above embodiments is implemented.

[0074] Specifically, the display device 20 further includes a display panel 700 , which is connected to the processor 500 . The processor 500 can adjust the light emitting control signal provided to the display panel 700 to change the brightness of the display panel 700 .

[0075] By adjusting the light control signal, a transition brightness is set between the first brightness and the second brightness. When the number of pulses of the light control signal corresponding to the transition brightness is smaller than the number of pulses of the light control signal corresponding to the first brightness, and the duty cycle of the light control signal corresponding to the transition brightness is larger than the duty cycle of the light control signal corresponding to the first brightness, and the duty cycle of the light control signal corresponding to the transition brightness is smaller than the duty cycle of the light control signal corresponding to the first brightness, the switching from the first brightness to the second brightness can be made smoother, thereby avoiding screen flickering caused by directly switching from the first brightness to the second brightness.

[0076] The display device 20 in the embodiment of the present application includes but is not limited to mobile phones, personal digital assistants (PDA), tablet computers, e-books, televisions, access control systems, smart landline phones, consoles and other devices with display functions.

[0077] Through the description of the above implementation mode, those skilled in the art can understand that for the convenience and simplicity of description, only the division of the above functional modules is used as an example. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0078] It should be understood that the devices and methods disclosed in the several embodiments provided in the present application can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another device. In addition, some features can be ignored or not performed. In addition, the coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0079] The units described as separate components may or may not be physically separated. The components shown as units may be one physical unit or multiple physical units. That is, they may be located in one place or distributed in multiple different places. Some or all of the units may be selected to achieve the purpose of this solution according to actual needs.

[0080] In addition, each functional unit in each embodiment of the present application may be integrated into a processing unit; or may exist physically separately; or some units may be integrated into one unit, and some units may exist physically separately. The above-mentioned integrated units may be implemented in the form of hardware or in the form of software functional units.

[0081] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, all or part of the technical solution of the embodiment of the present application can be embodied in the form of a software product. The software product is stored in a storage medium. The software product includes a number of instructions to enable a device (which can be a single-chip microcomputer, chip, etc.) or a processor (processor) to perform all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk and other media that can store program code.

[0082] It should be noted that all or part of the above-mentioned embodiments provided in the present application (for example, part or all of any feature) can be arbitrarily combined or used in combination with each other.

[0083] The above contents are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A brightness switching method, characterized in that: The method for switching the display brightness of a display device from a first brightness to a second brightness includes: At least one transition brightness is obtained according to the first brightness and the second brightness; wherein the number of pulses of the light control signal corresponding to the transition brightness is less than the number of pulses of the light control signal corresponding to the first brightness, and the duty cycle of the light control signal corresponding to the transition brightness is greater than the duty cycle of the light control signal corresponding to the first brightness and less than the duty cycle of the light control signal corresponding to the second brightness; Switching the display brightness of the display device from the first brightness to each of the transition brightnesses in sequence; The display brightness of the display device is switched from the transition brightness to the second brightness.

2. The brightness switching method according to claim 1, characterized in that: The first brightness is lower than the second brightness.

3. The brightness switching method according to claim 2, characterized in that: The difference between the first brightness and the second brightness is not less than 400 nit; Preferably, the first brightness is 1200 nit, and the second brightness is 1600 nit.

4. The brightness switching method according to claim 1, characterized in that: The number of pulses of the light emitting control signal corresponding to the first brightness is greater than the number of pulses of the light emitting control signal corresponding to the second brightness.

5. The brightness switching method according to claim 4, characterized in that: The number of pulses of the light emitting control signal corresponding to the first brightness is 12 pulses, and the number of pulses of the light emitting control signal corresponding to the second brightness is 3 pulses.

6. The brightness switching method according to claim 5, characterized in that: The obtaining at least one transition brightness according to the first brightness and the second brightness includes: Obtain a first transition brightness, a second transition brightness, and a third transition brightness according to the first brightness and the second brightness; The step of switching the display brightness of the display device from the first brightness to each of the transition brightnesses in sequence includes: The display brightness of the display device is switched in sequence from the first brightness, the first transition brightness, the second transition brightness to the third transition brightness.

7. The brightness switching method according to claim 6, characterized in that: The number of pulses of the light control signal corresponding to the first transition brightness, the number of pulses of the light control signal corresponding to the second transition brightness, the number of pulses of the light control signal corresponding to the third transition brightness, and the number of pulses of the light control signal corresponding to the second brightness are all equal; The duty cycle of the light emitting control signal corresponding to the first transition brightness is equal to the duty cycle of the light emitting control signal corresponding to the first brightness; The duty cycle of the light emitting control signal corresponding to the second transition brightness is greater than the duty cycle of the light emitting control signal corresponding to the first transition brightness; A duty ratio of the light emitting control signal corresponding to the third transition brightness is greater than a duty ratio of the light emitting control signal corresponding to the second transition brightness.

8. The brightness switching method according to claim 6, characterized in that: The number of pulses of the light emitting control signal corresponding to the second transition brightness is smaller than the number of pulses of the light emitting control signal corresponding to the first transition brightness; The number of pulses of the light emitting control signal corresponding to the third transition brightness is smaller than the number of pulses of the light emitting control signal corresponding to the second transition brightness; The number of pulses of the light emitting control signal corresponding to the third transition brightness is equal to the number of pulses of the light emitting control signal corresponding to the second brightness; The duty cycle of the light emitting control signal corresponding to the first transition brightness is greater than the duty cycle of the light emitting control signal corresponding to the first brightness; The duty cycle of the light emitting control signal corresponding to the second transition brightness is greater than the duty cycle of the light emitting control signal corresponding to the first transition brightness; A duty ratio of the light emitting control signal corresponding to the third transition brightness is greater than a duty ratio of the light emitting control signal corresponding to the second transition brightness.

9. A control device, characterized in that: Used to control the display brightness of the display device to be adjusted from a first brightness to a second brightness, the control device comprising: a calculation module, configured to obtain at least one transition brightness according to the first brightness and the second brightness; wherein the number of pulses of the light control signal corresponding to the transition brightness is less than the number of pulses of the light control signal corresponding to the first brightness, and the duty cycle of the light control signal corresponding to the transition brightness is greater than the duty cycle of the light control signal corresponding to the first brightness; A first control module, used for switching the display brightness of the display device from the first brightness to each of the transition brightnesses in sequence; The second control module is used to switch the display brightness of the display device from the transition brightness to the second brightness.

10. A display device, characterized in that: The method comprises a memory and a processor, wherein the processor is connected to the memory, the memory stores a computer program, and the computer program is executed by the processor to implement the brightness switching method according to any one of claims 1 to 8.

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