Display device and backlight brightness adjusting method

Abstract

The embodiment of the invention provides a display device and a backlight brightness adjusting method. And after the user indicates to display the target image, the display equipment acquires target image information and displays target image data. The display device detects an image type of a target image. And if the image type is a first type of image, acquiring a current initial backlight brightness value, and acquiring a target backlight brightness value according to the target image parameter. And obtaining a backlight brightness adjustment step length according to the initial backlight brightness value and the target backlight brightness value. And adjusting the backlight brightness value to the target backlight brightness value according to the backlight brightness adjustment step length, thereby realizing a gradual adjustment effect and relieving brightness jump in the backlight brightness adjustment process.

Description

Technical Field

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

[0002] A display device refers to a terminal device that can output a specific display screen. The display device can implement a two-way human-computer interaction function, integrating various functions such as audio-visual, entertainment, and data, to meet the diverse and personalized needs of users.

[0003] Users can control the display device to perform various operations, such as controlling the display device to play media assets, browse the web, play games, etc. Among them, the media assets can include various types, such as pictures, videos, text, and other contents. In order to improve the user experience, the display device can also have the function of displaying art paintings. Displaying art paintings requires that the picture effect in the display device is closer to the original painting. Compared with ordinary display contents, the picture quality parameters of art paintings have significant differences.

[0004] However, when the display device adjusts display parameters, some parameters have little impact on users, but the backlight brightness parameter has a greater impact on users. If the required backlight brightness of the art painting to be displayed has a large gap with the current backlight brightness of the display device, after the display device adjusts the parameters, the effect of the backlight brightness of the display device before and after the adjustment is also relatively obvious, and users will feel an obvious brightness jump when viewing, which affects the user's viewing experience. Summary of the Invention

[0005] The present application provides a display device and a backlight brightness adjustment method to solve the problem in the related art that when the display device displays an art painting, adjusting the backlight brightness causes an obvious brightness jump, which affects the user's viewing experience.

[0006] In a first aspect, some embodiments of the present application provide a display device, including a display and a controller. Among them, the display is configured to display a user interface; the controller is configured to:

[0007] In response to an instruction indicating to display a target image, obtain target image information; the target image information includes target image data and target image parameters;

[0008] Control the display to display the target image data, and detect the image type of the target image;

[0009] If the image type is the first type of image, obtain the current initial backlight brightness value of the display device, and obtain the target backlight brightness value according to the target image parameters;

[0010] Obtain the backlight brightness adjustment step according to the initial backlight brightness value and the target backlight brightness value;

[0011] Adjust the backlight brightness value of the display to the target backlight brightness value according to the backlight brightness adjustment step size.

[0012] In a second aspect, some embodiments of the present application provide a backlight brightness adjustment method applied to a display device, including:

[0013] In response to an instruction indicating to display a target image, obtain target image information; the target image information includes target image data and target image parameters;

[0014] Control the display to display the target image data and detect the image type of the target image;

[0015] If the image type is a first type of image, obtain the current initial backlight brightness value of the display device and obtain the target backlight brightness value according to the target image parameters;

[0016] Obtain the backlight brightness adjustment step size according to the initial backlight brightness value and the target backlight brightness value;

[0017] Adjust the backlight brightness value of the display to the target backlight brightness value according to the backlight brightness adjustment step size.

[0018] It can be seen from the above technical solutions that some embodiments of the present application provide a display device and a backlight brightness adjustment method. After the user instructs to display a target image, the display device obtains the target image information and displays the target image data. The display device detects the image type of the target image. If the image type is a first type of image, obtain the current initial backlight brightness value and obtain the target backlight brightness value according to the target image parameters. Obtain the backlight brightness adjustment step size according to the initial backlight brightness value and the target backlight brightness value. Adjust the backlight brightness value to the target backlight brightness value according to the backlight brightness adjustment step size, achieving the effect of gradual adjustment, and alleviating the brightness jump during the backlight brightness adjustment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the present application, the following will briefly introduce the drawings required for the embodiments. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 Shows a usage scenario of a display device according to some embodiments;

[0021] Figure 2 Shows a hardware configuration block diagram of the control device 100 according to some embodiments;

[0022] Figure 3 The block diagram of the hardware configuration of the display device 200 according to some embodiments is shown;

[0023] Figure 4 The software configuration diagram in the display device 200 according to some embodiments is shown;

[0024] Figure 5 The schematic diagram of the user interface in some embodiments is shown;

[0025] Figure 6 The schematic diagram of the application panel in some embodiments is shown;

[0026] Figure 7 The schematic diagram of the network media asset interface in some embodiments is shown;

[0027] Figure 8 The schematic diagram of the image mode setting interface in some embodiments is shown;

[0028] Figure 9 The schematic diagram of the image mode parameter adjustment interface in some embodiments is shown;

[0029] Figure 10 The schematic diagram of the backlight brightness gradual change adjustment mode confirmation information in some embodiments is shown;

[0030] Figure 11 The interaction flow chart of each component of the display device in some embodiments is shown;

[0031] Figure 12 The schematic diagram of the image selection interface in some embodiments is shown;

[0032] Figure 13 The schematic diagram of the environmental brightness abnormal prompt interface in some embodiments is shown. Detailed implementation manners

[0033] To make the purpose and implementation manners of this application clearer, the following will clearly and completely describe the exemplary implementation manners of this application with reference to the accompanying drawings in the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only a part of the embodiments of this application, rather than all of the embodiments.

[0034] It should be noted that the brief description of the terms in this application is only for the convenience of understanding the subsequent described implementation manners, rather than intending to limit the implementation manners of this application. Unless otherwise specified, these terms should be understood in their ordinary and common meanings.

[0035] In this application, terms such as "first", "second", "third", etc. in the specification, claims and the above-mentioned drawings are used to distinguish similar or like objects or entities, and do not necessarily mean to limit a specific order or sequence, unless otherwise noted. It should be understood that such terms can be interchanged under appropriate circumstances.

[0036] The terms "comprising" and "having" and any variations thereof are intended to cover but not exclusively include. For example, a product or device comprising a series of components does not necessarily have to be limited to all the components clearly listed, but may include other components not clearly listed or inherent to these products or devices.

[0037] The display device provided by the embodiments of this application can have various implementation forms. For example, it can be a television, a smart TV, a laser projection device, a monitor, an electronic bulletin board, an electronic table, etc. Figure 1 and Figure 2 is a specific implementation manner of the display device of this application.

[0038] Figure 1 is a schematic diagram of the operation scenario between the display device and the control device according to the embodiment. As Figure 1 shown, the user can operate the display device 200 through the smart device 300 or the control device 100.

[0039] In some embodiments, the control device 100 can be a remote control. The communication between the remote control and the display device includes infrared protocol communication or Bluetooth protocol communication, and other short-distance communication methods, and controls the display device 200 wirelessly or wiredly. The user can input user instructions through the buttons on the remote control, voice input, control panel input, etc. to control the display device 200.

[0040] In some embodiments, the smart device 300 (such as a mobile terminal, a tablet computer, a computer, a laptop, etc.) can also be used to control the display device 200. For example, use the application program running on the smart device to control the display device 200.

[0041] In some embodiments, the display device can receive instructions without using the above-mentioned smart device or control device, but receive user control through touch or gestures, etc.

[0042] In some embodiments, the display device 200 can also be controlled in ways other than the control device 100 and the smart device 300. For example, it can directly receive the user's voice commands for control through a module for obtaining voice commands configured inside the display device 200, or receive the user's voice commands for control through a voice control device set outside the display device 200.

[0043] In some embodiments, the display device 200 also communicates with the server 400. It can be set to allow the display device 200 to communicate and connect through a local area network (LAN), a wireless local area network (WLAN), and other networks. The server 400 can provide various contents and interactions to the display device 200. The server 400 can be a cluster or multiple clusters, and can include one or more types of servers.

[0044] Figure 2 An exemplary configuration block diagram of the control device 100 according to an exemplary embodiment is shown. As Figure 2 shown, the control device 100 includes a controller 110, a communication interface 130, a user input / output interface 140, a memory, and a power supply. The control device 100 can receive the user's input operation instructions, convert the operation instructions into instructions recognizable and responsive by the display device 200, and act as an interaction intermediary between the user and the display device 200.

[0045] As Figure 3 , the display device 200 includes at least one of a tuner demodulator 210, a communicator 220, a detector 230, a device interface 240, a controller 250, a display 260, an audio output interface 270, a memory, a power supply, and a user interface.

[0046] In some embodiments, the controller includes a processor, a video processor, an audio processor, a graphics processor, a RAM, a ROM, and first to n interfaces for input / output.

[0047] The display 260 includes a display screen component for presenting a picture, and a driving component for driving image display, which is used to receive the image signal output from the controller and display video content, image content, and menu manipulation interfaces, as well as the user manipulation UI interface.

[0048] The display 260 can be a liquid crystal display, an OLED display, and a projection display, and can also be a projection device and a projection screen.

[0049] The communicator 220 is a component for communicating with external devices or servers according to various communication protocol types. For example, the communicator may include at least one of a Wifi module, a Bluetooth module, a wired Ethernet module, other network communication protocol chips such as a near-field communication protocol chip, and an infrared receiver. The display device 200 can establish the transmission and reception of control signals and data signals with the external control device 100 or the server 400 through the communicator 220.

[0050] The user interface can be used to receive control signals from the control device 100 (such as an infrared remote control, etc.).

[0051] The detector 230 is used to collect signals from the external environment or interact with the outside. For example, the detector 230 includes a light receiver, a sensor for collecting the ambient light intensity; or, the detector 230 includes an image collector, such as a camera, which can be used to collect the external environmental scene, the attributes of the user, or the user interaction gesture. Or, the detector 230 includes a sound collector, such as a microphone, etc., for receiving external sounds.

[0052] The device interface 240 may include, but is not limited to, the following: a high-definition multimedia interface (HDMI), an analog or data high-definition component input interface (component), a composite video input interface (CVBS), a USB input interface (USB), an RGB port, or any one or more of the above interfaces. It can also be a composite input / output interface formed by the above multiple interfaces.

[0053] The tuner demodulator 210 receives broadcast television signals through wired or wireless reception, and demodulates audio and video signals, such as EPG data signals, from multiple wireless or wired broadcast television signals.

[0054] In some embodiments, the controller 250 and the tuner demodulator 210 may be located in different separate devices, that is, the tuner demodulator 210 may also be in an external device of the main device where the controller 250 is located, such as an external set-top box, etc.

[0055] The controller 250 controls the operation of the display device and responds to user operations through various software control programs stored in the memory. The controller 250 controls the overall operation of the display device 200. For example: in response to receiving a user command for selecting a UI object to be displayed on the display 260, the controller 250 can perform operations related to the object selected by the user command.

[0056] In some embodiments, the controller includes at least one of a Central Processing Unit (CPU), a video processor, an audio processor, a Graphics Processing Unit (GPU), a Random Access Memory (RAM), a Read-Only Memory (ROM), a first interface to an nth interface for input / output, a communication bus (Bus), etc.

[0057] If the user enters a user command through the graphical user interface (GUI) that can be displayed on the display 260, the user input interface receives the user input command through the graphical user interface (GUI). Alternatively, if the user enters a user command by inputting a specific sound or gesture, the user input interface receives the user input command by identifying the sound or gesture through a sensor.

[0058] A "user interface" is a media interface for interaction and information exchange between an application or an operating system and a user, which realizes the conversion between the internal form of information and the form acceptable to the user. The common manifestation form of the user interface is the graphical user interface (Graphic User Interface, GUI), which refers to the user interface related to computer operation displayed in a graphical way. It can be an icon, a window, a control, etc. interface element displayed on the display screen of an electronic device, where the control can include visible interface elements such as an icon, a button, a menu, a tab, a text box, a dialog box, a status bar, a navigation bar, a Widget, etc.

[0059] As Figure 4 shown, the system of the display device is divided into three layers, namely the application layer, the middleware layer, and the hardware layer from top to bottom.

[0060] The application layer mainly includes common applications on the TV and an application framework (Application Framework). Among them, the common applications are mainly applications developed based on the browser Browser, such as HTML5 APPs; and native applications (Native APPs).

[0061] The application framework (Application Framework) is a complete program model that has all the basic functions required by a standard application software, such as file access, data exchange..., and the usage interfaces of these functions (toolbars, status bars, menus, dialog boxes).

[0062] Native applications (Native APPs) can support online or offline, message push, or local resource access.

[0063] The middleware layer includes various middleware such as TV protocols, multimedia protocols, and system components. The middleware can use the basic services (functions) provided by the system software to connect various parts of the application system on the network or different applications, and can achieve the purpose of resource sharing and function sharing.

[0064] The hardware layer mainly includes the HAL interface, hardware, and drivers. Among them, the HAL interface is the unified interface for all TV chips to dock, and the specific logic is implemented by each chip. The drivers mainly include: audio driver, display driver, Bluetooth driver, camera driver, WIFI driver, USB driver, HDMI driver, sensor drivers (such as fingerprint sensor, temperature sensor, pressure sensor, etc.), and power driver, etc.

[0065] In some embodiments, after the user controls the display device to power on, the controller 250 can control the display 260 to display the user interface. In the embodiments of the present application, it is set that the user interface can be some UI interfaces of the display device, such as the system main interface, various setting interfaces, and various control interfaces of application programs, etc. Figure 5 Shows a schematic diagram of the user interface in some embodiments. As Figure 5 shown, the user interface includes a first navigation bar 500, a second navigation bar 510, a function bar 520, and a content display area 530. The function bar 520 includes multiple function controls such as "Viewing History", "My Favorites", and "My Apps", etc.

[0066] The user can view the application programs already installed on the display device 200 through the application panel, that is, the functions supported by the display device 200. It should be noted that the applications installed on the display device 200 can be system applications or third-party applications. The user controls the display device 200 to implement the corresponding functions of the application program by opening a certain application program. Figure 6 Shows a schematic diagram of the application panel in some embodiments. As Figure 6 shown, the application panel includes three controls: "Browser", "Player", and "Picture Viewer". Among them, the user can click on the "Browser" control to control the display device 200 to open the browser application. The user can perform corresponding operations in the browser, such as browsing various web pages, etc. The user can click on the "Player" control to watch some network media resources using the display device 200, including various media resources provided on the network. The user can click on the "Picture Viewer" control to watch various pictures using the display device 200. The pictures can be various resources on the network or pictures stored locally on the display device 200.

[0067] In some embodiments, the user can use the display device 200 to watch various media contents, such as video content, picture content, and text content. The user canFigure 6 Click on the "Player" control in the application panel shown to start the player application.

[0068] The display device 200 can display a user interface for controlling the player application. The user can search for a certain network media asset to watch. Figure 7 A schematic diagram of a network media asset interface in some embodiments is shown. As Figure 7 shown, multiple network media assets are provided in the network media asset interface, which can be resources such as movies and TV series. The user can select a network media asset, such as media asset A, to watch. After determining the media asset selected by the user, the display device 200 can obtain the media asset data of the media asset and can display the media asset data full screen for the user to watch.

[0069] The user can also watch other types of media assets such as various picture resources. In some embodiments, the display device 200 can provide the user with parameter setting functions regarding resources such as Picture (image) and Sound. Taking the screen display as an example, for different services of the display device 200, the display device 200 can be set with different image modes. The image modes can include a cinema mode, a game mode, a standard mode, etc. When the display device 200 is in different image modes, the parameters of the picture displayed by the display 260 can be different, and the picture parameters can include parameters such as brightness, color temperature, contrast, and backlight brightness. The user can control the display device 200 to be in different image modes to adjust the image quality of the picture displayed by the display device 200, so as to obtain different visual effects.

[0070] In some embodiments, the user can actively select an image mode and set it as the current working image mode of the display device 200. The user can input an instruction to query the image mode to the display device 200, for example, by selecting relevant options for the image mode through the system settings UI interface of the display device 200.

[0071] In response to the user's query image mode instruction, the controller 250 can first count all the image modes supported in the display device 200 and generate an image mode setting interface. The controller 250 can control the display 260 to display the image mode setting interface. The user can first call up the system settings interface of the display device 200, and the system settings interface can include image mode, sound, signal source, display range, and restore factory settings, etc., to control different functions of the display device 200. The user can click on the image mode to query the image mode situation. Figure 8 A schematic diagram of an image mode setting interface in some embodiments is shown. As Figure 8As shown, the image mode setting interface includes several image mode controls, and each image mode control corresponds to an image mode supported by the display device 200. The image modes in the display device 200 may include a standard mode, a night mode, a cinema mode, a sports mode, a game mode, etc. Among them, the picture parameters corresponding to the standard mode are relatively balanced. Taking the parameter range of 0-100 as an example, the picture parameters of the standard mode can be set to 50. The night mode can protect the user's eyes and can set the picture parameters such as brightness to a lower value, such as 20. The cinema mode, sports mode, game mode, etc. are image modes set according to the working content of the display device 200 and are applicable to scenarios where the display device 200 executes media resource playback, games, and picture browsing.

[0072] In some embodiments, each image mode can be set with its own default picture parameters. For example, all the picture parameters of the standard mode can be set to 50. Considering the user experience, it can also be set for the user to adjust the picture parameters of each image mode by themselves. For example, after the user selects the standard mode, the specific values of the parameters in the standard mode can also be set. Figure 9 The schematic diagram of the image mode parameter adjustment interface in some embodiments is shown. As Figure 9 shown, the current image mode of the display device 200 is set to the standard mode, and the user can set the parameters of the standard mode, including brightness, color temperature, contrast, and backlight. For example, the user can adjust the brightness parameter to 45. The user can also click the restore default settings control to control the display device 200 to adjust all the parameters of this image mode to the default settings. Among them, the adjustment ranges of brightness, color temperature, and contrast can be between 0-100, and the adjustment range of backlight brightness can be between 0-30.

[0073] In some embodiments, when the user uses the display device 200, the working content of the display device 200 may be switched. For example, when the display device 200 is playing media resources, the user can adjust the image mode of the display device 200 to the cinema mode. The user may control the display device 200 to turn on the game function and turn off the media resource playback. At this time, the display device 200 can start the game-related application program. Since the display device 200 is in the cinema mode and is not suitable for the game scenario, it may cause the picture of the display device 200 to be poor, and the user can switch the image mode of the display device 200 to the game mode. Considering that it is too cumbersome for the user to switch the image mode manually, the display device 200 can also be set with an image mode automatic switching function.

[0074] The display device 200 can detect the current working scenario and determine a suitable image mode according to the working scenario, so as to automatically switch to the image mode to improve the user's viewing experience. In different image modes, the display device 200 corresponds to different picture parameters, so that the display device 200 can display different picture effects.

[0075] In some embodiments, the display device 200 can also provide a function of displaying art paintings for users. An art painting is essentially an image resource. For example, various art pictures on the network can display a picture effect approaching the original image. Since displaying art paintings requires the picture effect in the display device 200 to be closer to the original painting, compared with ordinary display content, the picture quality parameters of art paintings are significantly different, especially the backlight brightness, which has a large gap compared with other display content.

[0076] To realize the display of art paintings, the display device 200 can be adjusted to a specific image mode to meet the requirements of the picture quality parameters of art paintings. The art painting itself can set a specific image mode. After the display device 200 downloads the relevant data of the art painting, it can be adjusted to the corresponding image mode.

[0077] However, when the display device 200 adjusts the display parameters, parameters such as color temperature, contrast, and backlight brightness may all be adjusted. Among them, parameters such as color temperature and contrast have little impact on users during adjustment, but the backlight brightness parameter has a greater impact on users. If the gap in backlight brightness before and after adjustment is large, directly adjusting the backlight brightness of the display 260 to the target value will also result in an obvious adjustment effect shown to the user, and the user will feel an obvious brightness jump during viewing, which affects the user's viewing experience.

[0078] To solve the above problems, the display device 200 provided in the embodiments of the present application can have a function of gradually adjusting the backlight brightness, which can control the process of adjusting the backlight of the display device 200 to achieve the effect of gradual adjustment. The display device 200 can be set with a mode of gradually adjusting the backlight brightness. When the user indicates to view an art painting, the display device 200 can obtain the relevant parameters of the art painting to determine the backlight brightness value that the display device 200 should set. Calculate the backlight brightness adjustment step according to the current backlight brightness value, and then gradually adjust the backlight brightness according to the backlight brightness adjustment step to achieve the effect of gradual adjustment, thereby avoiding brightness jump during the adjustment process and improving the user's usage experience.

[0079] In some embodiments, the user can send a backlight brightness gradual adjustment mode instruction to the display device 200 by operating a specified button on the remote control. In the actual application process, the corresponding relationship between the backlight brightness gradual adjustment mode instruction and the remote control button is pre-bound. For example, a backlight brightness gradual adjustment mode button is set on the remote control. When the user touches this button, the remote control sends the backlight brightness gradual adjustment mode instruction to the controller 250, and at this time, the controller 250 controls the display device 200 to enter the backlight brightness gradual adjustment mode.

[0080] The backlight brightness gradual adjustment mode option can also be set in the system UI interface of the display device 200. When the user clicks this option, the display device 200 can be controlled to enter or exit the backlight brightness gradual adjustment mode.

[0081] In some embodiments, to prevent the user from accidentally triggering the backlight brightness gradual adjustment mode, when the controller 250 receives the backlight brightness gradual adjustment mode instruction, it can control the display 260 to display the backlight brightness gradual adjustment mode confirmation information, so that the user can make a secondary confirmation whether to control the display device 200 to enter the backlight brightness gradual adjustment mode. Figure 10 The schematic diagram of the backlight brightness gradual adjustment mode confirmation information in some embodiments is shown.

[0082] Figure 11 The interaction flow chart of each component of the display device 200 in some embodiments is shown, including the following steps:

[0083] S101. In response to the instruction indicating the target image, obtain the target image information; the target image information includes the target image data and the target image parameters;

[0084] S102. Control the display 260 to display the target image data and detect the image type of the target image;

[0085] S103. If the image type is the first type of image, obtain the current initial backlight brightness value of the display device 200 and obtain the target backlight brightness value according to the target image parameters;

[0086] S104. Obtain the backlight brightness adjustment step size according to the initial backlight brightness value and the target backlight brightness value;

[0087] S105. Adjust the backlight brightness value of the display 260 to the target backlight brightness value according to the backlight brightness adjustment step size.

[0088] In some embodiments, a user may use the display device 200 to view various media images, such as various video contents, picture contents, etc. Among them, the pictures may include art paintings for simulating the original paintings of the pictures. In the embodiments of the present application, an image that needs to perform backlight brightness gradient adjustment is referred to as a first type of image, such as an art painting. An image that does not need to perform backlight brightness gradient adjustment is referred to as a second type of image, including other images other than the first type of image, such as ordinary pictures and video contents, etc.

[0089] The user may input an image display instruction to the display device 200 to view various image contents, such as art paintings. For example, the user may click on the "Picture Browsing" control in the Figure 6 application panel shown to view pictures such as art paintings.

[0090] In response to the image display instruction, the controller 250 may control the display 260 to display an image selection interface. The image selection interface includes a first image area and a second image area. Among them, the first image area includes at least one image control corresponding to a first type of image, and the second image area includes at least one image control corresponding to a second type of image.

[0091] Figure 12 The schematic diagram of the image selection interface in some embodiments is shown. As Figure 12 shown, the image selection interface includes two areas. Among them, the area where the first type of image is located is the first image area, which includes a plurality of image controls corresponding to the first type of image. The area where the second type of image is located is the second image area, which includes a plurality of image controls corresponding to the second type of image. The content displayed in each image control may be a thumbnail of the corresponding picture, and the user may view each thumbnail and select the picture that needs to be displayed by the display device 200.

[0092] In response to the user's selection operation on the target image control, the controller 250 may generate an instruction to indicate the display of the target image. In the embodiments of the present application, the image indicated by the user to be displayed is referred to as the target image.

[0093] It should be noted that the type of the target image selected by the user may also be marked. If the target image control is located in the first image area, the target image is marked as a first type of image. If the target image control is located in the second image area, the target image is marked as a second type of image.

[0094] In some embodiments, in response to an instruction to display a target image, the controller 250 may acquire target image information and control the display 260 to display target image data. The target image information includes target image data and target image parameters. The target image data is the display data of the target image, and the target image parameters are the descriptions of the target image's picture quality parameters. The controller 250 may download the relevant information of the target image from the server.

[0095] Since there are multiple image modes set in the display device 200, in order to directly adjust the image mode of the display device 200, the target image parameters may include a target image mode, and the target image mode is used to declare the image mode that the display device 200 needs to set to display the target image. Therefore, after determining the target image mode corresponding to the target image, the display device 200 may adjust the image mode to the target image mode to display the target image.

[0096] The controller 250 may update the display parameters of the display 260 to the parameters corresponding to the target image mode, thereby realizing updating the image mode of the display device 200 to the target image mode.

[0097] In some embodiments, the controller 250 may acquire various picture quality parameters corresponding to the target image mode according to a preset image mode database. In the embodiments of the present application, various picture quality parameters in the image mode are called mode parameters, and the mode parameters of the target image mode are called target mode parameters.

[0098] The display device 200 is pre-set with an image mode database, and the mode parameters corresponding to multiple image modes supported by the display device 200 are stored in the image mode database. The controller 250 may read the target mode parameters in the image mode database.

[0099] It should be noted that for users, most of the parameters in the mode parameters have little visual impact on users, but the backlight brightness parameter has a greater visual impact. Therefore, the backlight brightness parameter can be adjusted separately later, and other parameters other than the backlight brightness parameter can be adjusted first.

[0100] The controller 250 may first extract first mode parameters. In the embodiments of the present application, the first mode parameters are other parameters in the target mode parameters except for the backlight brightness value.

[0101] The controller 250 may adjust the display parameters of the display 260 to the first mode parameters, that is, adjust the parameters other than the backlight brightness value.

[0102] After adjusting the display parameters of the display 260 to the first mode parameters, the controller 250 can control the display 260 to display the target image data. It should be noted that since not all picture quality parameters have been adjusted (the backlight brightness value has not been adjusted yet), the target image displayed at this time is not the original painting effect. After the backlight brightness of the display 260 is adjusted subsequently, the target image displayed can present the original painting effect of the art painting.

[0103] In some embodiments, considering that the display device 200 may have a zoned dimming function, which may cause a flashing screen effect on the display device 200, it is necessary to control the zoned dimming function.

[0104] Zoned dimming, also known as regional dimming, can make the bright parts of the displayed picture brighter and the dark parts darker, enhancing the contrast between light and dark, so that a better user experience can be obtained when displaying ordinary user content, such as displaying the second type of image.

[0105] However, when displaying art paintings, the zoned dimming function will cause the display effect to deviate from the real painting. Therefore, when the display device 200 displays art paintings, to ensure the original painting effect of the image, the display device 200 needs to turn off the zoned dimming function. That is, when the display device 200 displays the first type of image, the zoned dimming function needs to be turned off, but the zoned dimming function can be turned on when displaying the second type of image.

[0106] It should be noted that when the display device 200 switches to display the first type of image and the second type of image, it will involve the turning on and off of the zoned dimming function. However, when the zoned dimming function is turned on and off, it will cause an obvious flashing screen effect on the display 260, affecting the user experience.

[0107] Therefore, the display device 200 can set an image loading interface to avoid the flashing screen situation of the display 260.

[0108] In response to the instruction indicating the display of the target image, the controller 250 can first control the display 260 to display the image loading interface. Among them, the pixel value of the pixel points in the image loading interface is a preset value, the pixel value can be an RGB value, and the preset value can be 0. That is, the pixel value of the pixel points in the image loading interface can be set to 0. At this time, the entire image loading interface is a black interface, thus avoiding the flashing screen situation of the display 260.

[0109] After controlling the display 260 to display the image loading interface, the controller 250 can adjust the zoned dimming function of the display device 200.

[0110] If the image type is the first type of image, the zoned dimming function of the display device 200 is turned off; if the image type is the second type of image, the zoned dimming function of the display device 200 is turned on.

[0111] While controlling the display 260 to display an image loading interface, the controller 250 can obtain target image information. The controller 250 can adjust the display parameters of the display 260 according to the target image parameters, so as to adjust the parameters other than the backlight brightness to meet the display requirements of the target image.

[0112] After adjusting the display parameters of the display 260, the controller 250 can control the display 260 to cancel the display of the image loading interface, and at the same time can control the display 260 to display the target image data.

[0113] It should be noted that at this time, only the backlight brightness value of the display 260 has not been adjusted, and the controller 250 can further adjust the backlight brightness of the display 260 to achieve the original painting effect of the target image.

[0114] In some embodiments, when adjusting the backlight brightness, the controller 250 can first detect the image type of the target image.

[0115] If the image type is the first type of image, it means that the target image is an art painting, and the requirement for the backlight brightness parameter is relatively high. The gap between the current backlight brightness of the display 260 and the backlight brightness required by the target image may be relatively large. In order to avoid brightness jump during the process of adjusting the backlight brightness, the backlight brightness can be adjusted gradually.

[0116] The controller 250 can first obtain the current initial backlight brightness value of the display device 200. The controller 250 can also obtain the backlight brightness value that the display device 200 needs to be adjusted to, which is called the target backlight brightness value in the embodiments of the present application.

[0117] The backlight brightness can be represented by a Pwm (Pulse-Width Modulation) value. Pwm is a technology that controls the backlight brightness by controlling the duty cycle of the high level and the low level within a time period. The Pwm value can be used to measure the backlight of the display device 200.

[0118] In some embodiments, the controller 250 can obtain the target backlight brightness value according to the target image parameters. It should be noted that the target image parameters include the target image mode indicated by the target image. Therefore, the controller 250 can first read the target image mode.

[0119] Based on the preset image mode database, the controller 250 can obtain the target mode parameters corresponding to the target image mode. The controller 250 can read the target backlight brightness value from the target mode parameters. Among them, the target backlight brightness value is the backlight brightness value in the target mode parameters, that is, the backlight brightness value required by the target image.

[0120] In some embodiments, the display device 200 is further provided with a light sensor enabling function.

[0121] The light sensor enabling function means that the display device 200 can adaptively adjust the backlight brightness according to the brightness of the surrounding environment to improve the user's viewing experience. When the brightness of the surrounding environment of the display device 200 is too bright or too dark, if the default backlight brightness is used, it may cause greater harm to the user's eyes and affect the user's viewing experience. Therefore, the light sensor enabling function can be used to adjust the backlight brightness.

[0122] The display device 200 is provided with a device interface 240, which is used to connect an external device to enable the display device 200 to connect to the external device. The external device can be a light sensor. The light sensor can be a brightness sensor for collecting the ambient brightness of the environment where the display device 200 is located. The ambient brightness can refer to the luminous flux, that is, the Lux value (lumen value). The light sensor can be built into the display device 200 as a detector, or can be an external device connected to the display device 200. For the light sensor externally connected to the display device 200, the light sensor can be connected to the device interface 240 of the display device 200 and accessed to the display device 200. The externally connected light sensor can be an independent peripheral device and is connected to the display device 200 through a specific data interface. It can also be a wireless connection method, such as wireless local area network, Bluetooth connection, infrared connection, etc.

[0123] The controller 250 can obtain the target ambient brightness collected by the light sensor and adjust the display parameters of the display device 200 so that the display parameters of the display device 200 can adapt to the environment, thereby improving the display effect. It can be to adjust the display parameters of the target image in the display 260, such as the white balance value, etc. The display device 200 can automatically adjust the display parameters according to the ambient brightness, thereby improving the display effect.

[0124] In some embodiments, the controller 250 can obtain the target backlight brightness value according to the light sensor enabling function.

[0125] The controller 250 can first obtain the functional state of the display device 200 to detect whether the light sensor enabling function of the display device 200 is turned on.

[0126] If the light sensor enabling function of the display device 200 is not turned on, the controller 250 can obtain the target backlight brightness value according to the target image parameters.

[0127] If the light sensor enabling function of the display device 200 is turned on, the controller 250 can obtain the target backlight brightness value according to the target ambient brightness collected by the light sensor.

[0128] It should be noted that if the ambient brightness where the display device 200 is currently located is weak, then the Lux value will be low. At this time, the display device 200 can set a relatively small backlight brightness, so that the display device 200 can better adapt to the current environment and the played picture will not be too dazzling. On the contrary, when the ambient brightness around is strong, the Lux value will be large, and the display device 200 can set a relatively large backlight brightness, so that the picture of the display 260 is bright enough for the human eye to normally distinguish the TV picture. By converting the ambient brightness into a quantified Lux value, the strength of the ambient brightness can be judged to determine the backlight brightness that the display device 200 needs to set currently.

[0129] When setting the backlight brightness, the controller 250 can first detect the target brightness range where the target ambient brightness is located. Based on the preset brightness range database, the controller 250 can obtain the target backlight brightness value corresponding to the target brightness range. Among them, the backlight brightness values corresponding to multiple brightness ranges are stored in the brightness range database.

[0130] The controller 250 can detect the ambient brightness, determine the brightness range where the ambient brightness is located, and obtain the target brightness range. In the embodiment of the present application, the brightness range refers to: each range obtained by dividing the ambient brightness according to a preset brightness threshold in combination with the subjective evaluation of the ambient light brightness by humans. By judging the range where the ambient brightness is located, the target brightness range where the current ambient brightness is located can be determined.

[0131] For example, the subjective evaluation of the ambient light brightness by the user can be divided into: extremely dark, dark, normal, bright, etc. Taking four evaluations as an example, the brightness threshold can be divided according to the four evaluations, and each evaluation can correspond to one brightness range or multiple brightness ranges. For example, the brightness threshold can be divided into 8 ranges in total. Among them, the evaluation of extremely dark corresponds to 3 brightness ranges, the evaluation of dark corresponds to 2 brightness ranges, the evaluation of normal corresponds to 2 brightness ranges, and the evaluation of bright corresponds to 1 brightness range. The following table shows the division of the brightness ranges.

[0132] Brightness interval Interval minimum value Interval maximum value Level1 0 T1 Level2 T1 T2 Level3 T2 T3 Level4 T3 T4 Level5 T4 T5 Level6 T5 T6 Level7 T6 T7 Level8 T7 T8

[0133] Among them, [0, T7] is a preset brightness threshold. 0, T1, T2, T3, T4, T5, T6, T7, T8 are the boundary values of 8 brightness intervals, and satisfy the relationship of L8 > L7 > L6 > L5 > L4 > L3 > L2 > L1 > 0. From the first brightness interval to the eighth brightness interval, the ambient brightness gradually increases. The brightness threshold that can be set for the ambient brightness is 0 - 255. Among them, the ambient brightness of 0 - 100 can be set as a particularly dark evaluation type, and three brightness intervals can be set, for example, the first brightness interval of 0 - 30, the second brightness interval of 30 - 65, and the third brightness interval of 65 - 100. The ambient brightness of 100 - 150 can be set as a dark evaluation type, and two brightness intervals can be set, for example, the fourth brightness interval of 100 - 125 and the fifth brightness interval of 125 - 150. The ambient brightness of 150 - 230 can be set as a normal evaluation type, and two brightness intervals can be set, for example, the sixth brightness interval of 150 - 190 and the seventh brightness interval of 190 - 230. The ambient brightness of 230 - 255 can be set as a bright evaluation type, and one brightness interval can be set, for example, the eighth brightness interval of 230 - 255. The controller 250 can determine the target brightness interval where the ambient brightness is located. For example, if the current ambient brightness is within the range of L2 - L3, then the target brightness interval where the current ambient brightness is located is the third brightness interval.

[0134] For each brightness interval, a backlight brightness value can be preset, and the corresponding relationship is stored in the brightness interval database. After determining the target brightness interval, the controller 250 can directly obtain the target backlight brightness value corresponding to the target brightness interval.

[0135] In some embodiments, after obtaining the ambient brightness, the controller 250 can first detect the ambient brightness to determine whether the current ambient brightness is normal. Specifically, a brightness threshold can be preset. For example, if the brightness value range of the ambient light that the brightness sensor can collect is A - B, then this range can be set as the brightness threshold. Another example is that the brightness threshold can be obtained according to the color temperature threshold. By converting two adjacent points of the color temperature threshold into corresponding brightnesses and using these two brightnesses as the brightness threshold critical points, the brightness threshold can be determined.

[0136] After determining the brightness threshold, the controller 250 can determine whether the ambient brightness is within the range of the brightness threshold, so as to determine whether the ambient brightness of the environment where the display device 200 is located is normal. When the ambient brightness is less than the minimum value of the brightness threshold, it is considered that the ambient brightness is too weak at this time, and the human eye is no longer suitable to view the display device 200 in the current ambient brightness. When the ambient brightness is greater than the maximum value of the brightness threshold, it is considered that the ambient brightness is too strong at this time, and the human eye is also not suitable to view the display device 200 in the current ambient brightness. In both of these cases, the ambient brightness will be determined to be in an abnormal state. That is, if the controller 250 detects that the ambient brightness is not within the range of the brightness threshold, it is determined that the ambient brightness of the environment where the display device 200 is located is abnormal. The brightness threshold can be set by the manufacturer of the display device 200. Different manufacturers can set different ambient brightnesses, or they can set the same. This application embodiment does not make any limitations. When it is detected that the ambient brightness is within the range of the brightness threshold, it is considered that the current ambient brightness is normal, and the controller 250 can adjust the brightness of the display device 200 according to the ambient brightness.

[0137] In some embodiments, when it is detected that the ambient brightness is not within the range of the brightness threshold, that is, the ambient brightness of the environment where the display device 200 is located is abnormal, the controller 250 can control the display 260 to display an ambient brightness abnormality prompt interface, and the ambient brightness abnormality prompt interface is used to prompt the user that the ambient brightness of the current environment where the display device 200 is located is in an abnormal state. The user can detect whether the light sensor fails, or can directly turn off the display device 200 or adjust the brightness of the surrounding environment. Figure 13 The schematic diagram of the ambient brightness abnormality prompt interface in some embodiments is shown.

[0138] In some embodiments, after obtaining the target backlight brightness value, the controller 250 can gradually adjust the backlight brightness of the display 260 so that the backlight brightness value is adjusted to the target backlight brightness value. The display device 200 can adjust the backlight brightness by adjusting the PWM, and the backlight gradient processing is to control the backlight brightness to gradually transition from the current value to the target backlight brightness value.

[0139] The controller 250 can first obtain the backlight brightness adjustment step according to the initial backlight brightness value and the target backlight brightness value.

[0140] The controller 250 can first obtain the backlight brightness value adjustment parameter, and the backlight brightness value adjustment parameter is the difference between the initial backlight brightness value and the target backlight brightness value.

[0141] The controller 250 can calculate the backlight brightness adjustment step according to the backlight brightness value adjustment parameter, and the backlight brightness adjustment step is the ratio of the backlight brightness value adjustment parameter to the preset adjustment period.

[0142] The backlight brightness adjustment step size is expressed as step = (PWMtar - PWMcur) / N, where PWMtar is the target backlight brightness value, PWMcur is the initial backlight brightness value, and N represents the preset adjustment period, which can be 4 seconds.

[0143] It should be noted that the PWM value can be 0 - 255, and during the adjustment process, it is necessary to ensure that the adjustment amount is an integer each time. For example, when adjusting the PWM value from 200 to 100, it can be adjusted multiple times, but the adjustment amount each time should be an integer. It can be adjusted 100 times, with the PWM decreasing by 1 each time, or it can be adjusted 50 times, with the PWM decreasing by 2 each time.

[0144] It can be set to adjust once every 10 ms. Assuming the preset adjustment period is 4 seconds and the PWM value is adjusted from 200 to 100, then it needs to be adjusted 400 times, and the total adjustment amount of the PWM value is 100. To ensure integer adjustment of the PWM, it is possible to detect whether the adjustment amount is an integer each time during adjustment. For example, at the first 10 ms, the adjustment amount is 100 / 400, which is not an integer, so no adjustment is made this time, and the next determination is carried out. Similarly, no adjustment is made for the second and third times until the fourth time when the adjustment amount is 400 / 400, reaching an integer, and then the PWM value can be adjusted.

[0145] The controller 250 can adjust the backlight brightness value of the display 260 to the target backlight brightness value according to the backlight brightness adjustment step size. It should be noted that by gradually adjusting the backlight brightness of the display 260, the situation of brightness jump can be avoided, improving the user's viewing experience. After adjusting the backlight brightness value of the display 260 to the target backlight brightness value, the target image can present the original painting effect for display to the user.

[0146] In some embodiments, a backlight brightness control application is installed in the display device 200, and a backlight control thread is set in the backlight brightness control application to control the backlight brightness of the display 260. The backlight brightness control application starts automatically after the display device 200 is powered on, thereby controlling the backlight brightness of the display 260.

[0147] It should be noted that the backlight brightness control application does not gradually adjust the backlight. Therefore, for images such as art paintings, the backlight brightness control application should be turned off.

[0148] For this reason, if the image type is the first type of image, the controller 250 can turn off the backlight brightness control application and execute the step of obtaining the current initial backlight brightness value of the display device 200 to perform a gradual adjustment of the backlight brightness. If the image type is the second type of image, the controller 250 can control the backlight brightness control application to adjust the backlight brightness value of the display 260.

[0149] In some embodiments, when the user instructs to switch from the user interface to an art painting, if the backlight is in the process of fading, and the user presses the back key to exit the display of the art painting and return to the user interface. At this time, it is necessary to end the currently executing fading thread, then use the currently changed PWM as the current value, calculate the PWM corresponding to the user interface as the target value, and restart the fading.

[0150] When the user instructs to switch from the user interface to an art painting, if the backlight is in the process of fading, and the user presses the left or right key to switch to other paintings. At this time, it is necessary to calculate the new PWM target value according to the image quality parameters of the new painting. If the new target value is the same as the current one, no operation is required, and the current fading thread continues to complete the fading; if the PWM target value changes, it is necessary to end the currently executing fading thread, then use the set PWM as the current value, calculate the PWM corresponding to the user interface as the target value, and restart the fading.

[0151] When the user instructs to return from the art painting to the user interface, if the backlight is in the process of fading, and the user switches to the art painting again. At this time, it is necessary to end the currently executing fading thread, then use the set PWM as the current value, calculate the new PWM target value according to the image quality parameters of the painting, and restart the fading.

[0152] It should be noted that the user interface itself is an OSD interface, and the opening and closing of the local dimming function have no impact on the user. Therefore, when the user instructs the display device 200 to switch from the display image to the display of the user interface, there is no need to change the local dimming function. When the user instructs to switch from the user interface to the display image, the opening and closing of the local dimming function can be adjusted, including turning off the local dimming function when displaying the first type of image and turning on the local dimming function when displaying the second type of image.

[0153] The embodiment of the present application also provides a backlight brightness adjustment method applied to a display device. The method includes:

[0154] Step 101, in response to an instruction to display a target image, obtain target image information, where the target image information includes target image data and target image parameters;

[0155] Step 102, control the display to display the target image data and detect the image type of the target image;

[0156] Step 103, if the image type is the first type of image, obtain the current initial backlight brightness value of the display device and obtain the target backlight brightness value according to the target image parameters;

[0157] Step 104, obtain the backlight brightness adjustment step according to the initial backlight brightness value and the target backlight brightness value;

[0158] Step 105: Adjust the backlight brightness value of the display to the target backlight brightness value according to the backlight brightness adjustment step size.

[0159] In some embodiments, the target image parameter includes a target image mode. Obtaining the target backlight brightness value according to the target image parameter further includes:

[0160] Read the target image mode. Based on a preset image mode database, obtain the target mode parameter corresponding to the target image mode; the image mode database stores mode parameters corresponding to multiple image modes. Read the target backlight brightness value from the target mode parameter.

[0161] In some embodiments, it further includes:

[0162] Obtain the functional state of the display device. If the light sensor enabling function of the display device is not enabled, execute the step of obtaining the target backlight brightness value according to the target image parameter.

[0163] If the light sensor enabling function of the display device is enabled, read the target ambient brightness collected by the light sensor; detect the target brightness interval where the target ambient brightness is located; based on a preset brightness interval database, obtain the target backlight brightness value corresponding to the target brightness interval; the brightness interval database stores backlight brightness values corresponding to multiple brightness intervals.

[0164] In some embodiments, obtaining the backlight brightness adjustment step size according to the initial backlight brightness value and the target backlight brightness value further includes:

[0165] Obtain the backlight brightness value adjustment parameter, where the backlight brightness value adjustment parameter is the difference between the initial backlight brightness value and the target backlight brightness value. Calculate the backlight brightness adjustment step size according to the backlight brightness value adjustment parameter, and the backlight brightness adjustment step size is the ratio of the backlight brightness value adjustment parameter to the preset adjustment period.

[0166] In some embodiments, it further includes:

[0167] In response to an image display instruction, control the display to display an image selection interface; the image selection interface includes a first image area and a second image area; the first image area includes at least one image control corresponding to a first type of image, and the second image area includes at least one image control corresponding to a second type of image.

[0168] In response to the user's selection operation on the target image control, generate an instruction indicating to display the target image. If the target image control is located in the first image area, mark the target image as a first type of image; if the target image control is located in the second image area, mark the target image as a second type of image.

[0169] In some embodiments, after detecting the image type of the target image, it further includes:

[0170] If the image type is the first type of image, turn off the backlight brightness control application and perform the step of obtaining the current initial backlight brightness value of the display device; the backlight brightness control application is an application that is started after the display device is powered on and is used to control the backlight brightness of the display device.

[0171] If the image type is the second type of image, control the backlight brightness control application to adjust the backlight brightness value of the display.

[0172] In some embodiments, it further includes:

[0173] Control the display to display an image loading interface; the pixel values of the pixels in the image loading interface are preset values. Adjust the display parameters of the display according to the target image parameters. Control the display to cancel the display of the image loading interface and perform the step of controlling the display to display the target image data.

[0174] In some embodiments, adjusting the display parameters of the display according to the target image parameters further includes:

[0175] Based on a preset image mode database, obtain the target mode parameters corresponding to the target image mode; the image mode database stores the mode parameters corresponding to multiple image modes. Extract the first mode parameters, where the first mode parameters are other parameters other than the backlight brightness value in the target mode parameters. Adjust the display parameters of the display to the first mode parameters.

[0176] In some embodiments, after controlling the display to display the image loading interface, it further includes:

[0177] If the image type is the first type of image, turn off the local dimming function of the display device. If the image type is the second type of image, turn on the local dimming function of the display device.

[0178] For the same and similar parts among the various embodiments in this specification, reference can be made to each other, and details will not be repeated here.

[0179] Those skilled in the art can clearly understand that the technology in the embodiments of the present invention can be implemented by means of software plus a necessary general hardware platform. Based on such an understanding, the technical solutions in the embodiments of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a storage medium, such as ROM / RAM, magnetic disk, optical disc, etc., and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods in various embodiments or some parts of the embodiments of the present invention.

[0180] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0181] For the sake of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussions are not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. According to the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, so that those skilled in the art can better use the embodiments and various different modified embodiments suitable for specific use considerations.

Claims

1. A display device, characterized in that, Including: A display configured to display a user interface; A controller configured to: In response to an instruction indicating to display a target image, obtain target image information; the target image information includes target image data and target image parameters; Control the display to display the target image data and detect the image type of the target image; If the image type is a first type of image, obtain the current initial backlight brightness value of the display device and obtain the target backlight brightness value according to the target image parameters; Obtain the backlight brightness adjustment step according to the initial backlight brightness value and the target backlight brightness value; Adjust the backlight brightness value of the display to the target backlight brightness value according to the backlight brightness adjustment step.

2. The display device according to claim 1, characterized in that, The target image parameters include a target image mode; when the controller executes obtaining the target backlight brightness value according to the target image parameters, it is further configured to: Read the target image mode; Based on a preset image mode database, obtain the target mode parameters corresponding to the target image mode; the image mode database stores mode parameters corresponding to multiple image modes; Read the target backlight brightness value from the target mode parameters.

3. The display device according to claim 1, wherein It further includes: A light sensor configured to detect the ambient brightness of the environment where the display device is located; After the controller executes obtaining the current initial backlight brightness value of the display device, it is further configured to: Obtain the functional state of the display device; If the display device does not enable the light sensing function, execute the step of obtaining the target backlight brightness value according to the target image parameters; If the display device enables the light sensing function, read the target ambient brightness collected by the light sensor; detect the target brightness interval where the target ambient brightness is located; based on a preset brightness interval database, obtain the target backlight brightness value corresponding to the target brightness interval; The brightness interval database stores backlight brightness values corresponding to multiple brightness intervals.

4. The display device according to claim 1, characterized in that When the controller executes obtaining the backlight brightness adjustment step according to the initial backlight brightness value and the target backlight brightness value, it is further configured to: Obtain a backlight brightness value adjustment parameter, and the backlight brightness value adjustment parameter is the difference between the initial backlight brightness value and the target backlight brightness value; Calculate the backlight brightness adjustment step according to the backlight brightness value adjustment parameter, and the backlight brightness adjustment step is the ratio of the backlight brightness value adjustment parameter to a preset adjustment period.

5. The display device according to claim 1, wherein The controller is further configured to: In response to an image display instruction, control the display to display an image selection interface; the image selection interface includes a first image area and a second image area; the first image area includes at least one image control corresponding to a first type of image, and the second image area includes at least one image control corresponding to a second type of image; In response to a user's selection operation on a target image control, generate an instruction indicating to display the target image; If the target image control is located in the first image area, mark the target image as a first type of image; if the target image control is located in the second image area, mark the target image as a second type of image.

6. The display device according to claim 5, characterized in that, After the controller executes detecting the image type of the target image, it is further configured to: If the image type is the first type of image, close the backlight brightness control application and perform the step of obtaining the current initial backlight brightness value of the display device; the backlight brightness control application is an application that is started after the display device is powered on and is used to control the backlight brightness of the display device; If the image type is the second type of image, control the backlight brightness control application to adjust the backlight brightness value of the display.

7. The display device according to claim 5, wherein In response to an instruction indicating to display a target image, the controller is further configured to: Control the display to display an image loading interface; the pixel values of the pixels in the image loading interface are preset numerical values; Adjust the display parameters of the display according to the target image parameters; Control the display to cancel the display of the image loading interface and perform the step of controlling the display to display the target image data.

8. The display device according to claim 7, wherein The target image parameters include a target image mode; when the controller performs adjusting the display parameters of the display according to the target image parameters, it is further configured to: Based on a preset image mode database, obtain the target mode parameters corresponding to the target image mode; the image mode database stores mode parameters corresponding to multiple image modes; Extract the first mode parameters, where the first mode parameters are other parameters except the backlight brightness value in the target mode parameters; Adjust the display parameters of the display to the first mode parameters.

9. The display device according to claim 7, characterized in that, After the controller controls the display to display the image loading interface, it is further configured to: If the image type is the first type of image, turn off the local dimming function of the display device; If the image type is the second type of image, turn on the local dimming function of the display device.

10. A backlight brightness adjustment method, applied to a display device, characterized in that The method includes: In response to an instruction indicating to display a target image, obtain target image information; the target image information includes target image data and target image parameters; Control the display to display the target image data and detect the image type of the target image; If the image type is the first type of image, obtain the current initial backlight brightness value of the display device and obtain the target backlight brightness value according to the target image parameters; Obtain the backlight brightness adjustment step according to the initial backlight brightness value and the target backlight brightness value; Adjust the backlight brightness value of the display to the target backlight brightness value according to the backlight brightness adjustment step.

Images