Brightness adjustment method, display device and storage medium

Abstract

A brightness adjustment method, a display device, and a storage medium. The brightness adjustment method is applied to display devices. The display device comprises a central processing unit, a controller element, a backlight brightness adjustment circuit and a display screen. The brightness adjustment method comprises: the central processing unit sending acquired screen brightness adjustment information to the controller element; by means of the controller element and the backlight brightness adjustment circuit, determining a target pulse signal corresponding to the screen brightness adjustment information, which is to be sent to the display screen; and then sending the target pulse signal to the display screen to adjust the brightness of a backlight assembly of the display screen. In scenarios where graphics cards lack DDCs, the present application can still adjust the screen brightness of display screens, thereby reducing costs.

Description

Brightness adjustment method, display device and storage medium TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a brightness adjustment method, a display device and a storage medium. BACKGROUND

[0002] When using a display device, it is usually necessary to adjust the display brightness of the display device to meet the user's usage requirements.

[0003] In the prior art, a display device usually includes a graphics card supporting a display data channel (DDC), and a DDC channel is established between the graphics card and a central processor. The process of display brightness adjustment is as follows: the processor sends brightness adjustment information in the operating system to the graphics card, the graphics card converts the brightness adjustment information into a pulse signal, and sends the pulse signal to the display (also referred to as a display screen) so that the display adjusts the brightness of its backlight component according to the received pulse signal.

[0004] However, in actual applications, in order to control costs, the graphics card in some display devices does not support DDC. Thus, this type of display device cannot adjust the screen brightness.

[0005] SUMMARY

[0006] The present application provides a brightness adjustment method, a display device and a storage medium, aiming to solve the problem that a display device cannot adjust the screen brightness when the graphics card of the display device does not support a DDC channel. The technical solutions are as follows:

[0007] In a first aspect, the embodiments of the present application provide a brightness adjustment method applied to a display device not supporting a DDC channel, the display device including a central processor, a controller element, a backlight brightness adjustment circuit, and a display screen, the central processor being connected with the controller element, and the controller element being connected with the display screen through the backlight brightness adjustment circuit.

[0008] The backlight brightness adjustment circuit includes a signal input end, a switching element, a signal output end, and a signal selection element, the signal input end being connected with a first signal input interface of the signal selection element and the controller element respectively, the switching element being connected with the signal input end and the signal output end respectively, the signal output end being connected with a second signal input interface of the signal selection element, and the signal selection element being connected with the display screen.

[0009] The method includes the following steps.

[0010] The central processor acquires screen brightness adjustment information and sends the screen brightness adjustment information to the controller element.

[0011] The controller element determines a pulse signal corresponding to the screen brightness adjustment information, and sends the pulse signal to a signal input end of the backlight brightness adjustment circuit;

[0012] The signal input end receives the pulse signal, and sends the pulse signal to a first signal input interface of the signal selection element and the switching element;

[0013] The switching element is turned on based on the received pulse signal, and obtains a reverse pulse signal of the pulse signal;

[0014] The signal output end sends the reverse pulse signal to a second signal input interface of the signal selection element, and a pulse signal output interface of the signal selection element outputs a target pulse signal to the display screen, so as to adjust the brightness of the backlight assembly of the display screen, the target pulse signal being one of the pulse signal and the reverse pulse signal.

[0015] In a second aspect, the embodiments of the present specification provide a display device which does not support DDC. Specifically, the display device comprises a central processing unit, a controller element, a backlight brightness adjustment circuit, and a display screen, the central processing unit is connected with the controller element, and the controller element is connected with the display screen through the backlight brightness adjustment circuit;

[0016] The backlight brightness adjustment circuit comprises a signal input end, a switching element, a signal output end, and a signal selection element, the signal input end is connected with a first signal input interface of the signal selection element and the controller element respectively, the switching element is connected with the signal input end and the signal output end respectively, the signal output end is connected with a second signal input interface of the signal selection element, and the signal selection element is connected with the display screen.

[0017] In a third aspect, the embodiments of the present specification provide a computer readable storage medium, and the computer readable storage medium stores a computer program, and the computer program is executed to implement the steps of the above method.

[0018] In the embodiments of the present application, the central processing unit sends the screen brightness adjustment information based on the operating system to the controller element connected with the central processing unit, and then determines the target pulse signal corresponding to the screen brightness adjustment information sent to the display screen through the controller element and the backlight brightness adjustment circuit, and then sends the target pulse signal to the display screen to adjust the brightness of the backlight assembly of the display screen, so that the screen brightness of the display screen can be adjusted even if the display card of the display device does not support the DDC channel.

[0019] In addition, the central processing unit, the controller element, the backlight brightness adjustment circuit, and the display screen are all components of the display device, and no additional components are needed, so that the material is saved and the cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced. Obviously, the accompanying drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] FIG. 1 is a structural schematic diagram of a display device according to the prior art;

[0022] FIG. 2 is a structural schematic diagram of a display device according to the prior art;

[0023] FIG. 3A is a structural schematic diagram of a display device according to an embodiment of the present application;

[0024] FIG. 3B is a structural schematic diagram of a display device according to an embodiment of the present application;

[0025] FIG. 4 is a flow schematic diagram of a brightness adjustment method according to an embodiment of the present application;

[0026] FIG. 5 is an example schematic diagram of a pulse signal according to an embodiment of the present application;

[0027] FIG. 6 is a flow schematic diagram of a brightness adjustment method according to an embodiment of the present application;

[0028] FIG. 7 is a structural schematic diagram of a display device according to an embodiment of the present application;

[0029] FIG. 8 is a flow schematic diagram of a brightness adjustment method according to an embodiment of the present application;

[0030] FIG. 9 is a structural schematic diagram of a display device according to an embodiment of the present application;

[0031] FIG. 10 is a structural schematic diagram of a display device according to an embodiment of the present application. DETAILED DESCRIPTION

[0032] The technical solutions in the present application will be described in detail below with reference to the accompanying drawings. In the description of the embodiments of the present application, unless otherwise specified, " / " represents the meaning of or, for example, A / B can represent A or B: "and / or" in the text only represents a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases of A alone, A and B together, and B alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0033] Hereinafter, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" are merely used for descriptive purposes and cannot be understood as indicating or implying relative importance or implying a specific number of the technical features indicated. Therefore, the features defined with "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" can explicitly or implicitly include one or more of the features.

[0034] The DDC channel is an information channel established between the central processor and the display card, which can be used to transmit the physical data of the display to the central processor, so that the central processor can automatically identify and configure the display after receiving the physical data of the display.

[0035] As shown in FIG. 1, in the scenario where the display (specifically, the display card in the display) supports the DDC channel, if the user adjusts the brightness of the display by means of the brightness bar provided by the operating system running on the central processor, the central processor sends the brightness adjustment information generated by the user operation to the display card through the DDC channel, and then the display card converts the brightness adjustment information into a pulse signal and sends the pulse signal to the display. The display adjusts the brightness of the backlight component according to the received pulse signal (brightness information). After the display adjusts the brightness, the screen immediately reflects the new brightness.

[0036] However, as shown in FIG. 2, in the scenario where the display does not support the DDC channel (the cost of the display card not supporting the DDC channel is lower than that of the display card supporting the DDC channel), the display card cannot communicate with the operating system using the existing solution, and it cannot receive the screen brightness adjustment information issued by the user based on the operating system, so that the screen brightness of the display screen cannot be adjusted.

[0037] Based on this, the present application proposes a brightness adjustment method. For the display device not supporting the DDC channel, a connection branch between the controller element and the backlight brightness adjustment circuit is established in the display device, so that even without the DDC channel, the controller element can receive the screen brightness information from the central processor and send the screen brightness information to the backlight brightness adjustment circuit through the above connection branch; correspondingly, the backlight brightness can drive the display screen brightness to adjust the brightness according to the screen brightness information.

[0038] Specifically, please refer to FIG. 3A and FIG. 3B, which are an architecture schematic diagram of a display device provided by an embodiment of the present application.

[0039] As shown in FIG. 3A, the display device includes a central processor, a controller element, a backlight brightness adjustment circuit, and a display screen. The central processor is connected to the controller element, for example, the central processor can be connected to the controller element through a low pin count bus (LPC bus). The controller element is connected to the display screen through the backlight brightness adjustment circuit.

[0040] As shown in FIG. 3B, the backlight brightness adjustment circuit includes a signal input end, a switch element, a signal output end, and a signal selection element. The signal input end is connected to port 1 (referred to as a first signal input interface) of the signal selection element and the controller element, respectively. The switch element is connected to the signal input end and the signal output end. The signal output end is connected to port 2 (referred to as a second signal input interface) of the signal selection element. The signal selection element (specifically, port 3 shown in FIG. 3B) is connected to the display screen.

[0041] In the embodiments of the present application, the display device can be a computer all-in-one machine, an interactive tablet, or the like.

[0042] The brightness adjustment method provided in the present specification will be described in detail below in combination with specific embodiments.

[0043] FIG. 4 is a flowchart of a brightness adjustment method according to an embodiment of the present specification. It should be understood that the method can be applied to the display device shown in FIG. 3A and FIG. 3B.

[0044] As shown in FIG. 4, the method according to an embodiment of the present specification can include the following steps S101-S103.

[0045] In step S101, the central processor obtains screen brightness adjustment information and sends the screen brightness adjustment information to the controller element.

[0046] In an embodiment, an operating system (OS) can be run on a central processing unit (CPU). The operating system is core software for managing computer hardware and software resources. When adjusting the screen brightness of the display screen, the operating system can obtain screen brightness adjustment information set by a user based on operation information of a display interface, and send the received screen brightness adjustment information to the controller element.

[0047] For example, when the operating system is running, a user can enter a screen brightness adjustment interface through a shortcut key or the like, and can slide a brightness adjustment progress bar in the screen brightness adjustment interface by using a mouse or touch interaction to adjust the screen brightness. The operating system then determines screen brightness adjustment information based on a ratio between a length of the position of the sliding of the brightness adjustment progress bar and a total length of the brightness adjustment progress bar.

[0048] For example, if the sliding position is at the left end of the brightness adjustment progress bar, the screen brightness adjustment information represented by the left end is 0%, and if the sliding position is at the right end of the brightness adjustment progress bar, the screen brightness adjustment information represented by the right end is 100%.

[0049] In some other embodiments, the display device can further include a light-sensitive component that can detect the intensity of the light around the display device and determine screen brightness adjustment information corresponding to the intensity of the light. For example, when the intensity of the light is 150 lux, the operating system determines that the corresponding screen brightness adjustment information is 40%.

[0050] The operating system sends the screen brightness adjustment information to the controller element through the central processing unit. The screen brightness adjustment information refers to information sent to the controller element for adjusting the screen brightness of the display screen.

[0051] In S102, the controller element determines a pulse signal corresponding to the screen brightness adjustment information and sends the pulse signal to the signal input end of the backlight brightness adjustment circuit.

[0052] In an embodiment, the controller element can be an embedded controller (EC) that obtains the screen brightness adjustment information sent by the central processing unit through an LPC bus connected to the central processing unit, determines a pulse signal corresponding to the screen brightness adjustment information, and sends the pulse signal to the signal input end of the backlight brightness adjustment circuit.

[0053] The pulse signal corresponding to the screen brightness adjustment information refers to a pulse width modulation (PWM) signal determined by the screen brightness adjustment information. It can be understood that the PWM signal is a periodic digital signal whose pulse width (i.e., high level duration) changes within a fixed period. By adjusting the time of the high level within each period, the brightness of the backlight component of the display screen can be controlled, and thus the screen brightness of the display screen can be controlled.

[0054] Optionally, in an embodiment, the pulse signal corresponding to the currently received screen brightness adjustment information can be determined by using preset mapping information in the controller element. The mapping information is used to represent the correspondence between the screen brightness adjustment information and the pulse signal.

[0055] For example, the mapping information includes: when the screen brightness adjustment information is 40%, the corresponding first pulse signal with a duty cycle of 40%; when the screen brightness adjustment information is 50%, the corresponding second pulse signal with a duty cycle of 50%; when the screen brightness adjustment information is 60%, the corresponding third pulse signal with a duty cycle of 60%; and so on. When it is determined that the currently received screen brightness adjustment information is 60%, the third pulse signal with a duty cycle of 60% is determined as the pulse signal corresponding to the currently received screen brightness adjustment information based on the mapping information.

[0056] In the example of the present application, the mapping information can be used to accurately determine the pulse signal corresponding to the screen brightness adjustment information when the screen brightness adjustment information is received.

[0057] In the example of the present application, the mapping information can be used to accurately determine the pulse signal corresponding to the screen brightness adjustment information when the screen brightness adjustment information is received.

[0058] S103, the signal input end receives the pulse signal and transmits the pulse signal to the first signal input interface of the signal selection element and the switching element.

[0059] In an embodiment, the controller element sends the pulse signal determined based on the screen brightness adjustment information to the first signal input interface of the signal selection element and the switching element through the signal input end, sends the pulse signal to the signal selection element based on the first signal input interface, and sends the pulse signal to the switching element through the signal input end. The switching element is turned on based on the received pulse signal and obtains the inverse pulse signal of the pulse signal. The inverse pulse signal of the pulse signal refers to a signal opposite to the level of the pulse signal. For example, the pulse signal is a high-level signal, and the inverse pulse signal is a low-level signal, and vice versa. Referring to FIG. 5, which is an example diagram of a pulse signal and an inverse pulse signal.

[0060] S105, the signal output end sends the inverse pulse signal to the second signal input interface of the signal selection element, and the pulse signal output interface of the signal selection element outputs a target pulse signal to the display screen to adjust the brightness of the backlight assembly of the display screen, the target pulse signal being one of the pulse signal and the inverse pulse signal.

[0061] After obtaining the inverse pulse signal, the signal output end sends the inverse pulse signal to the signal selection element through the second signal input interface of the signal selection element. The signal selection element can determine a target pulse signal from the received pulse signal and the inverse pulse signal according to a pre-setting, and output the target pulse signal to the display screen through the pulse signal output interface, so as to adjust the brightness of the backlight assembly of the display screen based on the target pulse signal, thereby realizing the adjustment of the screen brightness of the display screen.

[0062] In the embodiment of the present application, the central processor sends the screen brightness adjustment information based on the operating system to the controller element connected thereto, and then determines the target pulse signal corresponding to the screen brightness adjustment information through communication between the controller element and the backlight brightness adjustment circuit, so as to adjust the brightness of the backlight component of the display screen according to the target pulse signal, thereby achieving the effect that the screen brightness of the display screen can be adjusted even in the case of supporting the DDC channel.

[0063] In addition, the central processor, the controller element, the backlight brightness adjustment circuit and the display screen are all components of the display device, and no additional components are needed, thereby saving materials and reducing costs.

[0064] FIG. 6 is a flowchart of a brightness adjustment method provided by an embodiment of the present specification. It should be understood that the method can be applied to the display device in FIG. 7.

[0065] As shown in FIG. 6, the method of the embodiment of the present specification can include the following steps S201-S202.

[0066] As shown in the structural schematic diagram of the display device in FIG. 7, the switching element includes a power supply and a MOS tube, the MOS tube includes a source, a gate and a drain, the source of the MOS tube is connected to the ground wire, the gate of the MOS tube is connected to the signal input end, the drain of the MOS tube is connected to the power supply and the signal output end, the switching element is controlled to be turned on based on the pulse signal, and the reverse pulse signal of the pulse signal is obtained, which includes the following steps.

[0067] S201, when the pulse signal outputs a first high-level signal, the first level of the gate of the MOS tube is greater than the second level of the source of the MOS tube, the MOS tube is turned on, the power supply voltage output by the power supply flows through the ground wire through the MOS tube, and the signal output end outputs a first low-level signal;

[0068] In an embodiment, the pulse signal can output a first high-level signal, where the value of the first high-level signal can be “1”, when the pulse signal outputs the first high-level signal, the first level of “1” in the gate of the MOS tube is greater than the second level of “0” in the source of the MOS tube, the MOS tube is turned on, the power supply voltage output by the power supply flows through the ground wire through the MOS, and the signal output end outputs a first low-level signal with a value of “0”.

[0069] S202, when the pulse signal outputs a second low-level signal, the third level of the gate of the MOS tube is less than the fourth level of the source of the MOS tube, the MOS tube is turned off, the power supply voltage output by the power supply flows through the signal output end, and the signal output end outputs a second high-level signal, where the reverse pulse signal includes the first low-level signal or the second high-level signal.

[0070] In an embodiment, the pulse signal can output a second low level signal, where the value of the second low level signal can be "0", when the pulse signal outputs the second low level signal, the third level with a value of "0" in the gate of the MOS transistor is not greater than the fourth level with a value of "0" in the source of the MOS transistor, the MOS transistor is turned off, the power supply voltage output by the power supply passes through the signal output end of the MOS, and the signal output end outputs a second high level signal with a value of "1". Based on this, the inverse pulse signal of the pulse signal formed by the obtained first low level signal and the second high level signal can be obtained.

[0071] In the embodiments of the present application, the MOS transistor generates the inverse pulse signal of the pulse signal, so that the signal selection element can determine the target pulse signal sent to the display screen from the pulse signal and the inverse pulse signal.

[0072] FIG. 8 is a flowchart of a brightness adjustment method provided by an embodiment of the present specification. It should be understood that the method can be applied to the display device in FIG. 9.

[0073] As shown in FIG. 8, the method of the present specification can include the following steps S301-S302.

[0074] As shown in the architecture diagram of the display device in FIG. 9, the signal selection element includes a jump cap assembly, and the jump cap assembly includes a first signal input interface 1, a second signal input interface 2, a pulse signal output interface 3, and a jump assembly.

[0075] S301, when the jump assembly connects the first signal input interface and the pulse signal output interface, the jump cap assembly outputs the pulse signal to the display screen.

[0076] In an embodiment, when the jump assembly is set to connect the first signal input interface and the pulse signal output interface, the jump cap assembly outputs the pulse signal to the display screen.

[0077] S302, when the jump assembly connects the second signal input interface and the pulse signal output interface, the jump cap assembly outputs the inverse pulse signal to the display screen.

[0078] In an embodiment, when the jump assembly is set to connect the second signal input interface 2 and the pulse signal output interface 3, the jump cap assembly outputs the inverse pulse signal to the display screen.

[0079] It can be understood that in some screen brightness adjustment logic of the display screen, the reverse adjustment of the display screen brightness is included, for example, when it is determined that the user needs to adjust the screen brightness from 20% to 80%, the 20% screen brightness adjustment information is reversely transmitted to the controller element, so as to achieve the effect of adjusting the screen brightness to 80%. In the factory setting, the jump assembly is set to be connected to the second signal input interface 2 and the pulse signal output interface 3, so that the jump assembly outputs the reverse pulse signal of the pulse signal to the display screen. If the screen brightness adjustment logic of the display screen is a forward adjustment logic, in the factory setting, the jump assembly is set to be connected to the first signal input interface 1 and the pulse signal output interface 3.

[0080] In the embodiment of the application, the target adjustment signal is output to the display screen through the signal input port connected by the jump assembly of the jump cap assembly, so that the screen brightness of the display screen is accurately determined.

[0081] Optionally, referring to FIG. 10, in the embodiment of the application, the signal selection element further includes a backlight connection assembly, the backlight connection assembly includes a backlight signal input interface 6 and a backlight signal output interface 7, the pulse signal output interface of the jump cap assembly is connected to the backlight signal input interface 6, and the backlight signal output interface 7 is connected to the display screen.

[0082] In an embodiment, the backlight connection assembly receives the target pulse signal output by the pulse signal output interface through the backlight signal input interface, and outputs the received target pulse signal to the display screen through the backlight signal output interface.

[0083] In the embodiment of the application, the target pulse signal is output to the display screen through the backlight connection assembly, so that the screen brightness of the display screen can be adjusted even if there is no DDC channel in the display card.

[0084] The method of the embodiment of the application can further include the following steps S401-S402.

[0085] S401, if it is detected that the brightness information adjustment key exists triggering operation, the controller element obtains the current screen brightness information of the display screen.

[0086] In an embodiment, the display device further includes a brightness information adjustment key, which can be a software key or a hardware key. Optionally, when it is a hardware key, the brightness information adjustment key can be arranged at the lower right corner of the display device. When the controller element detects that the brightness information adjustment key exists triggering operation, it obtains the current screen brightness information of the display screen. In an embodiment, the screen brightness information can be stored in the controller element, so that the controller element directly obtains the current screen brightness information of the display screen when it detects that the brightness information adjustment key exists triggering operation.

[0087] S402, the controller element determines the screen brightness adjustment information based on the screen brightness information and the number of times the trigger operation is performed.

[0088] In one embodiment, after determining the screen brightness information, the controller element determines the screen brightness adjustment information based on the screen brightness information and the number of times the triggering operation is performed. The triggering operation can be a click operation, a press operation, etc.

[0089] In some embodiments, the brightness adjustment key can be a button that can determine the screen brightness adjustment trend by the time interval between two adjacent trigger operations. For example, if two click operations are received from the user and the time interval is less than a preset time interval, it is determined that the screen brightness needs to be increased; if two click operations are received from the user and the time interval is greater than or equal to the preset time interval, it is determined that the screen brightness needs to be decreased.

[0090] In some other embodiments, the brightness adjustment information key is an increase brightness adjustment key. The controller element determines the adjustment increment value of the brightness information based on the number of operations and a preset increment value, and then determines the screen brightness adjustment information by using the stored current screen brightness information and the adjustment increment value. The preset increment value is the brightness increase value corresponding to each number of operations, for example, it can be 5%. For example, if the controller element detects that the user has pressed the increase brightness adjustment key twice, it can determine that the adjustment increment value is 10%, and then determine the screen brightness adjustment information as 60% based on the current screen brightness information (e.g., 50%) and the adjustment increment value (10%).

[0091] In some other embodiments, the brightness adjustment information key is a brightness reduction key. The controller element determines the brightness reduction value based on the number of operations and a preset reduction value, and then determines the screen brightness adjustment information by using the stored current screen brightness information and the preset reduction value. The preset reduction value is the brightness reduction value corresponding to each number of operations, for example, it can be 5%. For example, if the controller element detects that the user has pressed the brightness reduction key twice, it can determine that the reduction value is 10%, and then determine the screen brightness adjustment information as 40% based on the current screen brightness information (e.g., 50%) and the reduction value (10%).

[0092] In this embodiment, the screen brightness adjustment information is determined by detecting the number of times the user operates the brightness adjustment key and the current screen brightness information. When the brightness adjustment key is the brightness reduction key, the screen brightness adjustment information is determined by the screen brightness information and the adjustment decrease value. When the brightness adjustment key is the brightness reduction key, the screen brightness adjustment information is determined by the screen brightness information and the adjustment increment value. This enables the screen brightness of the display screen to be adjusted by the brightness adjustment key even when the graphics card does not support the DDC channel.

[0093] The embodiment of the present application further provides a computer storage medium, which can store a plurality of program instructions, the program instructions being suitable for being loaded and executed by a processor to execute the method steps of the embodiments shown in FIG. 1 to FIG. 10, and the specific execution process can refer to the specific description of the embodiments shown in FIG. 1 to FIG. 10, which will not be repeated here.

[0094] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by a computer program instructing related hardware, and the program can be stored in a computer readable storage medium. When the program is executed, the processes of the above-mentioned embodiments can be included. The storage medium can be a magnetic disc, an optical disc, a read-only memory (ROM) or a random access memory (RAM) and the like.

[0095] The above only describes the preferred embodiments of the present application, and of course cannot limit the scope of the rights of the present application, so the equivalent changes made according to the claims of the present application still fall within the scope of the present application.

Claims

1. A luminance adjustment method characterized by, The application is applied to a display device without a DDC channel, and the display device comprises a central processor, a controller element, a backlight brightness adjusting circuit, and a display screen. The backlight brightness adjusting circuit comprises a signal input end, a switch element, a signal output end, and a signal selection element. The method comprises the following steps: The central processor acquires screen brightness adjusting information and sends the screen brightness adjusting information to the controller element. The controller element determines a pulse signal corresponding to the screen brightness adjusting information and sends the pulse signal to the signal input end of the backlight brightness adjusting circuit. The signal input end receives the pulse signal and sends the pulse signal to the first signal input interface of the signal selection element and the switch element. The switch element is turned on based on the received pulse signal and obtains a reverse pulse signal of the pulse signal. The signal output end sends the reverse pulse signal to the second signal input interface of the signal selection element, and a pulse signal output interface of the signal selection element outputs a target pulse signal to the display screen to adjust the brightness of a backlight component of the display screen.

2. The method of claim 1, wherein, The target pulse signal is one of the pulse signal and the reverse pulse signal. The controller element determines a pulse signal corresponding to the screen brightness adjusting information by using preset mapping information.

3. The method of claim 1, wherein, The controller element determines a pulse signal corresponding to the screen brightness adjusting information by using preset mapping information. The switch element comprises a power supply and a MOS tube. The MOS tube comprises a source, a gate, and a drain. When the pulse signal outputs a first high-level signal, the first level of the gate of the MOS tube is greater than the second level of the source of the MOS tube, the MOS tube is turned on, the power supply voltage output by the power supply flows through the ground wire through the MOS tube, and the signal output end outputs a first low-level signal. When the second low-level signal is output by the pulse signal, a third level of a gate of the MOS transistor is less than a fourth level of a source of the MOS transistor, the MOS transistor is disconnected, a power supply voltage output by the power supply flows through the signal output terminal, and the signal output terminal outputs a second high-level signal; The reverse pulse signal includes the first low-level signal or the second high-level signal.

4. The method of claim 1, wherein, The signal selection element includes a jump cap assembly, the jump cap assembly including the first signal input interface, the second signal input interface, a pulse signal output interface, and a jump assembly; The pulse signal output interface of the signal selection element outputs a target pulse signal to the display screen to adjust a brightness of a backlight assembly of the display screen, including: The jump cap assembly outputs the pulse signal to the display screen when the jump assembly connects the first signal input interface and the pulse signal output interface; The jump cap assembly outputs the reverse pulse signal to the display screen when the jump assembly connects the second signal input interface and the pulse signal output interface. The signal selection element further includes a backlight connection assembly, the backlight connection assembly including a backlight signal input interface and a backlight signal output interface, the pulse signal output interface of the jump cap assembly being connected to the backlight signal input interface, and the backlight signal output interface being connected to the display screen; 5. The method of claim 4, wherein, The pulse signal output interface of the signal selection element outputs a target pulse signal to the display screen to adjust a brightness of a backlight assembly of the display screen, including: The backlight connection assembly receives the target pulse signal output by the pulse signal output interface through the backlight signal input interface, and outputs the received target pulse signal to the display screen through the backlight signal output interface. The display device further includes a brightness information adjustment key connected to the controller element, and the method further includes:

6. The method according to any one of claims 1 to 5, characterized in that, If a triggering operation of the brightness information adjustment key is detected, the controller element acquires current screen brightness information of the display screen; The controller element determines the screen brightness adjustment information based on the screen brightness information and a number of operations of the triggering operation. The brightness information adjustment key is an increase brightness adjustment key, and the controller element determines the screen brightness adjustment information based on the screen brightness information and the number of operations of the triggering operation, including:

7. The method of claim 6, wherein, The controller element determines an adjustment increment value of the brightness information based on the number of operations and a preset increment value; The controller element determines the screen brightness adjustment information based on the screen brightness information and the adjustment increment value. The brightness information adjustment key is a decrease brightness adjustment key, and the controller element determines the screen brightness adjustment information based on the screen brightness information and the number of operations of the triggering operation, including:

8. The method of claim 6, wherein, The controller element determines an adjustment decrement value of the brightness information based on the number of operations and a preset decrement value; The controller element determines the screen brightness adjustment information based on the screen brightness information and the adjustment decrement value. ​ 9. A display device, characterized by The display device does not support DDC, and the display device comprises a central processor, a controller element, a backlight brightness adjustment circuit, and a display screen, wherein the central processor is connected with the controller element, and the controller element is connected with the display screen through the backlight brightness adjustment circuit. The backlight brightness adjustment circuit comprises a signal input end, a switch element, a signal output end, and a signal selection element, wherein the signal input end is connected with a first signal input interface of the signal selection element and the controller element respectively, the switch element is connected with the signal input end and the signal output end respectively, the signal output end is connected with a second signal input interface of the signal selection element, and the signal selection element is connected with the display screen.

10. The display device of claim 9, wherein, The switch element comprises a power supply and a MOS tube, wherein the MOS tube comprises a source, a gate, and a drain, the source of the MOS tube is connected with a ground wire, the gate of the MOS tube is connected with the signal input end, the drain of the MOS tube is connected with the power supply and the signal output end.

11. The display device of claim 9, wherein, The signal selection element comprises a jump cap assembly, and the jump cap assembly comprises a first signal input interface, a second signal input interface, a pulse signal output interface, and a jump assembly.

12. The display device of claim 11, wherein, The signal selection element further comprises a backlight connection assembly, and the backlight connection assembly comprises a backlight signal input interface and a backlight signal output interface, wherein the pulse signal output interface of the jump cap assembly is connected with the backlight signal input interface, and the backlight signal output interface is connected with the display screen.

13. The display device of claim 1, wherein, The display device further comprises a brightness information adjustment key.

14. The display device of claim 14, wherein, The brightness information adjustment key is one of an increase brightness adjustment key and a decrease brightness adjustment key.

15. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program, and when the computer program is executed, the method in any one of claims 1 to 8 is implemented.

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