CN113781957A

CN113781957A - Method for preventing screen burn-in of display equipment and display equipment

Info

Publication number: CN113781957A
Application number: CN202111053596.8A
Authority: CN
Inventors: 陈相涛
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2021-12-10
Anticipated expiration: 2041-09-09
Also published as: CN113781957B

Abstract

The application provides a method for preventing screen burning of display equipment and the display equipment, which can detect the equipment state change of the display equipment and adjust the display brightness of the display equipment according to the condition of the equipment state change. If the display device displays static images or pages and the like for a long time without other operations, the display brightness needs to be adjusted from the brighter first brightness to the darker second brightness, so that the display device is prevented from displaying static contents with high brightness for a long time, the problem of screen burning of the OLED display screen is prevented, and the service life of the OLED display screen is prolonged.

Description

Method for preventing screen burn-in of display equipment and display equipment

Technical Field

The application relates to the technical field of display, in particular to a method for preventing screen burning of display equipment and the display equipment.

Background

An OLED (Organic Light-Emitting Diode) display screen has the characteristics of self-luminescence, lightness, thinness, fast response time and the like. The display device using the OLED display screen has higher core indexes such as color representation capability, contrast, response speed, viewing angle, and the like.

However, the OLED display panel itself is made of a material that cannot display for a long time, and if the OLED display panel displays for a long time, the problem of screen burn-in occurs. The so-called screen burn-in is that after the OLED display screen continuously emits light for a long time to display a certain still image, the aging speed is accelerated, the display brightness is reduced, the afterimage of the image is left, and the afterimage cannot be eliminated and exists all the time, so that the watching of a user is influenced. In addition, after the screen burning problem appears, the service life of the OLED display screen can be greatly shortened.

Disclosure of Invention

The application provides a method for preventing screen burning of display equipment and the display equipment, which are used for solving the problem that screen burning is easily caused when the current display equipment with an OLED display screen displays a static image for a long time.

In a first aspect, the present application provides a method for preventing a display device from being burned, the method comprising the steps of: when the display equipment is at the first brightness, determining whether the equipment state of the display equipment is changed within a first preset time; if the equipment state changes within a first preset time, controlling the display equipment to be still at a first brightness, and starting to count again from the moment when the equipment state changes; if the equipment state is not changed within the first preset time, controlling the display equipment to be at the second brightness; wherein the first brightness is greater than the second brightness.

The method in the application can detect the device state change of the display device, and adjust the display brightness of the display device according to the device state change. If the display device displays static images or pages and the like for a long time without other operations, the display brightness needs to be adjusted from the brighter first brightness to the darker second brightness, so that the display device is prevented from displaying static contents with high brightness for a long time, the problem of screen burning of the OLED display screen is prevented, and the service life of the OLED display screen is prolonged.

In some implementations, while the display device is at the second brightness, it may also be determined whether a device state of the display device has changed; if the equipment state changes, controlling the display equipment to be at a first brightness; and if the device state is not changed, controlling the display device to be still at the second brightness.

In some implementations, when the display device is at the second brightness, it may also be determined whether a device state of the displayed device changes within a second preset time; if the equipment state changes within a second preset time, controlling the display equipment to be at a first brightness; and if the equipment state is not changed within the second preset time, controlling the display equipment to be still at the second brightness, and controlling the display to display the screen saver picture.

It is understood that the above-mentioned device states include a display state and an execution state of the display device.

In some realizations, when the display device is at the first brightness, whether the display state and the execution state of the display device change within a first preset time can be detected; if any one of the display state and the execution state changes within a first preset time, determining that the equipment state changes within the first preset time; and if the display state and the execution state are not changed within the first preset time, determining that the equipment state is not changed within the first preset time.

In some realizable modes, when the display device is at the first brightness, whether the picture content displayed by the display changes within a first preset time can be detected; if the picture content changes within the first preset time, determining that the display state changes within the first preset time; and if the picture content is not changed within the first preset time, determining that the display state is not changed within the first preset time.

In some implementation manners, when the display device is at the first brightness, whether the display device receives a control instruction input by a user within a first preset time may also be detected; if the display equipment receives a control instruction input by a user within first preset time, determining that the execution state changes within the first preset time; and if the display equipment does not receive the control instruction input by the user within the first preset time, determining that the execution state is not changed within the first preset time.

In some realizations, if the display device receives a control instruction input by a user within a first preset time, the display device is controlled to execute a corresponding action or the display is controlled to display a corresponding page.

In some realizations, when the display device is at the first brightness, whether the display device is connected with an external device within a first preset time can be detected; if the display device is connected with the external device within the first preset time, determining that the execution state changes within the first preset time; and if the display device is not connected with the external device within the first preset time, determining that the execution state is not changed within the first preset time.

In some realizations, if the display device is connected with the external device within a first preset time, the display is controlled to display a prompt page for connecting the external device.

In a second aspect, the present application provides a display device comprising:

a display; a controller connected to the display, the controller configured to: when the display equipment is at the first brightness, determining whether the equipment state of the display equipment is changed within a first preset time; if the equipment state changes within a first preset time, controlling the display equipment to be still at a first brightness, and starting to count again from the moment when the equipment state changes; if the equipment state is not changed within the first preset time, controlling the display equipment to be at the second brightness; wherein the first brightness is greater than the second brightness.

The method for preventing the screen from being burned of the display device of the first aspect in the application can be applied to the display device of the second aspect, and further, the beneficial effects that the second aspect can achieve are the same as the beneficial effects of the first aspect, and are not repeated here.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 shows a schematic diagram of an operational scenario between a display device and a control apparatus 100 according to some embodiments;

fig. 2 illustrates a hardware configuration block diagram of the control apparatus 100 according to some embodiments;

fig. 3 illustrates a hardware configuration block diagram of the display apparatus 200 according to some embodiments;

FIG. 4 illustrates a software configuration diagram in a display device 200 according to some embodiments;

FIG. 5 illustrates a flowchart of a method of preventing burn-in of a display device according to some embodiments;

FIG. 6 illustrates a schematic diagram of a still image when playing of video is paused on a display device 200, in accordance with some embodiments;

FIG. 7 illustrates a schematic diagram of displaying a still image on the display device 200 according to some embodiments;

FIG. 8 illustrates another schematic diagram of displaying a still image on the display device 200 according to some embodiments;

FIG. 9 illustrates a schematic diagram after a video paused on a display device 200 continues to play, in accordance with some embodiments;

FIG. 10 illustrates a schematic diagram of a display device 200 displaying an image of a person before an image of an animal, according to some embodiments;

FIG. 11 illustrates a schematic diagram of displaying a detection prompt page on the display device 200, according to some embodiments;

FIG. 12 illustrates a flow chart of brightness adjustment after the display device 200 is at the second brightness according to some embodiments;

FIG. 13 illustrates another flow chart of brightness adjustment after the display device 200 is at the second brightness according to some embodiments;

FIG. 14 illustrates a schematic diagram of displaying a pairing request page on the display device 200 according to some embodiments.

Detailed Description

To make the purpose and embodiments of the present application clearer, the following will clearly and completely describe the exemplary embodiments of the present application with reference to the attached drawings in the exemplary embodiments of the present application, and it is obvious that the described exemplary embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

It should be noted that the brief descriptions of the terms in the present application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of the present application. These terms should be understood in their ordinary and customary meaning unless otherwise indicated.

The terms "first," "second," "third," and the like in the description and claims of this application and in the above-described drawings are used for distinguishing between similar or analogous objects or entities and not necessarily for describing a particular sequential or chronological order, unless otherwise indicated. It is to be understood that the terms so used are interchangeable under appropriate circumstances.

The terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or apparatus that comprises a list of elements is not necessarily limited to all elements expressly listed, but may include other elements not expressly listed or inherent to such product or apparatus.

The term "module" refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware and/or software code that is capable of performing the functionality associated with that element.

Fig. 1 shows a schematic diagram of an operational scenario between a display device and a control apparatus 100 according to some embodiments. As shown in fig. 1, a user may operate the display apparatus 200 through the smart device 300 or the control device 100.

In some embodiments, the control apparatus 100 may be a remote controller, and the communication between the remote controller and the display device includes an infrared protocol communication or a bluetooth protocol communication, and other short-distance communication methods, and controls the display device 200 in a wireless or wired manner. The user may input a user instruction through a key on a remote controller, voice input, control panel input, etc., to control the display apparatus 200.

In some embodiments, the smart device 300 (e.g., mobile terminal, tablet, computer, laptop, etc.) may also be used to control the display device 200. For example, the display device 200 is controlled using an application program running on the smart device.

In some embodiments, the display device 200 may also be controlled in a manner other than the control apparatus 100 and the smart device 300, for example, the voice command control of the user may be directly received by a module configured inside the display device 200 to obtain a voice command, or may be received by a voice control device provided outside the display device 200.

In some embodiments, the display device 200 is also in data communication with a server 400. The display device 200 may be allowed to be communicatively connected through a Local Area Network (LAN), a Wireless Local Area Network (WLAN), and other networks. The server 400 may provide various contents and interactions to the display apparatus 200. The server 400 may be a cluster or a plurality of clusters, and may include one or more types of servers.

Fig. 2 illustrates a block diagram of a hardware configuration of the control apparatus 100 according to some embodiments. As shown in fig. 2, 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 apparatus 100 may receive an input operation instruction from a user and convert the operation instruction into an instruction recognizable and responsive by the display device 200, serving as an interaction intermediary between the user and the display device 200.

Fig. 3 illustrates a hardware configuration block diagram of a display device 200 according to some embodiments.

In some embodiments, the display apparatus 200 includes at least one of a tuner demodulator 210, a communicator 220, a detector 230, an external device interface 240, a controller 250, a display 260, an audio output interface 270, a memory, a power supply, a user interface.

In some embodiments, the controller includes a processor, a video processor, an audio processor, a graphic processor, a RAM, a ROM, a first interface to an nth interface for input/output.

In some embodiments, the display 260 includes a display screen component for presenting a picture, and a driving component for driving an image display, a component for receiving an image signal from the controller output, performing display of video content, image content, and a menu manipulation interface, and a user manipulation UI interface.

In some embodiments, the display 260 may be a liquid crystal display, an OLED display, and a projection display, and may also be a projection device and a projection screen.

In some embodiments, 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, and other network communication protocol chips or near field communication protocol chips, and an infrared receiver. The display apparatus 200 may establish transmission and reception of control signals and data signals with the external control apparatus 100 or the server 400 through the communicator 220.

In some embodiments, the user interface may be configured to receive control signals for controlling the apparatus 100 (e.g., an infrared remote control, etc.).

In some embodiments, the detector 230 is used to collect signals of the external environment or interaction with the outside. For example, detector 230 includes a light receiver, a sensor for collecting ambient light intensity; alternatively, the detector 230 includes an image collector, such as a camera, which may be used to collect external environment scenes, attributes of the user, or user interaction gestures, or the detector 230 includes a sound collector, such as a microphone, which is used to receive external sounds.

In some embodiments, the external device interface 240 may include, but is not limited to, the following: high Definition Multimedia Interface (HDMI), analog or data high definition component input interface (component), composite video input interface (CVBS), USB input interface (USB), RGB port, and the like. The interface may be a composite input/output interface formed by the plurality of interfaces.

In some embodiments, the tuner demodulator 210 receives broadcast television signals via wired or wireless reception, and demodulates audio/video signals, such as EPG data signals, from a plurality of wireless or wired broadcast television signals.

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

In some embodiments, the controller 250 controls the operation of the display device and responds to user operations through various software control programs stored in memory. The controller 250 controls the overall operation of the display apparatus 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 may perform an operation related to the object selected by the user command.

In some embodiments, the object may be any one of selectable objects, such as a hyperlink, an icon, or other actionable control. The operations related to the selected object are: displaying an operation connected to a hyperlink page, document, image, or the like, or performing an operation of a program corresponding to the icon.

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

And the CPU is used for executing the operating system and the application program instructions stored in the memory and executing various application programs, data and contents according to various interaction instructions for receiving external input so as to finally display and play various audio and video contents. The CPU processor may include a plurality of processors. E.g. comprising a main processor and one or more sub-processors.

In some embodiments, a graphics processor for generating various graphics objects, such as: icons, operation menus, user input instruction display graphics, and the like. The graphic processor comprises an arithmetic unit, which performs operation by receiving various interactive instructions input by a user and displays various objects according to display attributes; the system also comprises a renderer for rendering various objects obtained based on the arithmetic unit, wherein the rendered objects are used for being displayed on a display.

In some embodiments, the video processor is configured to receive an external video signal, and perform video processing such as decompression, decoding, scaling, noise reduction, frame rate conversion, resolution conversion, and image synthesis according to a standard codec protocol of the input signal, so as to obtain a signal that can be displayed or played on the direct display device 200.

In some embodiments, the video processor includes a demultiplexing module, a video decoding module, an image synthesis module, a frame rate conversion module, a display formatting module, and the like. The demultiplexing module is used for demultiplexing the input audio and video data stream. And the video decoding module is used for processing the video signal after demultiplexing, including decoding, scaling and the like. And the image synthesis module is used for carrying out superposition mixing processing on the GUI signal input by the user or generated by the user and the video image after the zooming processing by the graphic generator so as to generate an image signal for display. And the frame rate conversion module is used for converting the frame rate of the input video. And the display formatting module is used for converting the received video output signal after the frame rate conversion, and changing the signal to be in accordance with the signal of the display format, such as an output RGB data signal.

In some embodiments, the audio processor is configured to receive an external audio signal, decompress and decode the received audio signal according to a standard codec protocol of the input signal, and perform noise reduction, digital-to-analog conversion, and amplification processing to obtain an audio signal that can be played in the speaker.

In some embodiments, a user may enter user commands on a Graphical User Interface (GUI) displayed on display 260, and the user input interface receives the user input commands through the Graphical User Interface (GUI). Alternatively, the user may input the user command by inputting a specific sound or gesture, and the user input interface receives the user input command by recognizing the sound or gesture through the sensor.

In some embodiments, a "user interface" is a media interface for interaction and information exchange between an application or operating system and a user that enables conversion between an internal form of information and a form that is acceptable to the user. A commonly used presentation form of the User Interface is a Graphical User Interface (GUI), which refers to a User Interface related to computer operations and displayed in a graphical manner. It may be an interface element such as an icon, a window, a control, etc. displayed in the display screen of the electronic device, where the control may include a visual interface element 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.

In some embodiments, a system of a display device may include a Kernel (Kernel), a command parser (shell), a file system, and an application program. The kernel, shell, and file system together make up the basic operating system structure that allows users to manage files, run programs, and use the system. After power-on, the kernel is started, kernel space is activated, hardware is abstracted, hardware parameters are initialized, and virtual memory, a scheduler, signals and interprocess communication (IPC) are operated and maintained. And after the kernel is started, loading the Shell and the user application program. The application program is compiled into machine code after being started, and a process is formed.

Referring to fig. 4, in some embodiments, the system is divided into four layers, which are an Application (Applications) layer (abbreviated as "Application layer"), an Application Framework (Application Framework) layer (abbreviated as "Framework layer"), an Android runtime (Android runtime) and system library layer (abbreviated as "system runtime library layer"), and a kernel layer from top to bottom.

In some embodiments, at least one application program runs in the application program layer, and the application programs may be windows (windows) programs carried by an operating system, system setting programs, clock programs or the like; or an application developed by a third party developer. In particular implementations, the application packages in the application layer are not limited to the above examples.

The framework layer provides an Application Programming Interface (API) and a programming framework for the application. The application framework layer includes a number of predefined functions. The application framework layer acts as a processing center that decides to let the applications in the application layer act. The application program can access the resources in the system and obtain the services of the system in execution through the API interface.

As shown in fig. 4, in the embodiment of the present application, the application framework layer includes a manager (Managers), a Provider or a Content Provider (Content Provider), and the like, where the manager includes at least one of the following modules: an Activity Manager (Activity Manager) is used for interacting with all activities running in the system; the Location Manager (Location Manager) is used for providing the system service or application with the access of the system Location service; a Package Manager (Package Manager) for retrieving various information related to an application Package currently installed on the device; a Notification Manager (Notification Manager) for controlling display and clearing of Notification messages; a Window Manager (Window Manager) is used to manage the icons, windows, toolbars, wallpapers, and desktop components on a user interface.

In some embodiments, the activity manager is used to manage the lifecycle of the various applications as well as general navigational fallback functions, such as controlling exit, opening, fallback, etc. of the applications. The window manager is used for managing all window programs, such as obtaining the size of a display screen, judging whether a status bar exists, locking the screen, intercepting the screen, controlling the change of the display window (for example, reducing the display window, displaying a shake, displaying a distortion deformation, and the like), and the like.

In some embodiments, the system runtime layer provides support for the upper layer, i.e., the framework layer, and when the framework layer is used, the android operating system runs the C/C + + library included in the system runtime layer to implement the functions to be implemented by the framework layer.

In some embodiments, the kernel layer is a layer between hardware and software. As shown in fig. 4, the core layer includes at least one of the following drivers: audio drive, display driver, bluetooth drive, camera drive, WIFI drive, USB drive, HDMI drive, sensor drive (like fingerprint sensor, temperature sensor, pressure sensor etc.) and power drive etc..

An OLED (Organic Light-Emitting Diode) display screen has the characteristics of self-luminescence, lightness, thinness, fast response time and the like. The display device 200 using the OLED display panel has high core indexes such as color rendering capability, contrast, response speed, and viewing angle.

However, the OLED display panel itself is made of a material that cannot display for a long time, and if the OLED display panel displays for a long time, the problem of screen burn-in occurs. The so-called screen burn-in means that after the OLED display screen continuously emits light for a long time to display a certain still image, the aging speed is accelerated, the display brightness is reduced, the afterimage of the image is left, and the afterimage cannot be eliminated and exists all the time, so that the watching of a user is influenced. In addition, after the screen burning problem appears, the service life of the OLED display screen can be greatly shortened.

The display device 200 having the OLED display panel in the embodiment of the present application has device states such as a display state and an execution state. Here, the display state refers to a state in which the display apparatus 200 displays content, and the display content may include a video, an image, a picture, or a function page provided by the display apparatus 200 itself, or the like. The execution state refers to a state in which the display apparatus 200 actively or passively performs an action. The display apparatus 200 may passively perform an action according to a user operation, for example, the user presses a key of a remote controller, and the display apparatus 200 may perform a corresponding action or display a corresponding page after receiving a key message. The display device 200 may also actively perform an action by actively detecting a message sent by another device, for example, if the display device 200 detects a connection request sent by an external device, the display device 200 actively displays a connection prompt page, etc.

As can be seen from the above, displaying a still image on the display device 200 at all times may mean that the content displayed on the display device 200 does not change and the display device 200 does not perform other operations. At this time, it can be regarded that the device state of the display device 200 has not changed. The above-mentioned problem of burn-in of the OLED display screen may easily occur when the device state of the display device 200 is always unchanged. To solve this problem, the embodiment of the present application provides a method for preventing the burn-in of the display device 200, which may be applied to the display device 200 having the OLED display screen and is specifically performed by the controller 250 in the display device 200.

For convenience of description in the embodiments, the display device 200 in the following embodiments refers to the display device 200 having the OLED display panel.

As shown in fig. 5, the method for preventing the display device from being burned may specifically include the following steps:

in step S101, when the display device 200 is at the first brightness, it is determined whether the device state of the display device 200 changes within a first preset time.

In the embodiment of the present application, the display device 200 is set at the first brightness, which includes at least two cases.

The first case is that after the display device 200 is turned on, the display device 200 needs to be displayed with a relatively bright brightness, i.e., a first brightness. So that the user operates the display apparatus 200 after it is turned on. For example, after the display device 200 is turned on, the user may click a function control to control the display device 200 to display corresponding content, or after the display device 200 is turned on, the user may connect the display device 200 to an external device, or the like.

The second case is that the display device 200 needs to be displayed with the first brightness in order to facilitate the operation of the user and to provide the user with the display contents during the normal operation of the display device 200. For example, during the operation of the display device 200 by the user, the display device 200 needs to be at a first brightness; alternatively, the display device 200 may be at the first brightness when the display device 200 is playing video content for the user.

As described in the foregoing embodiment, if the user suddenly leaves the display device 200 for a while using the display device 200 and needs to deal with it, the user may pause the video content and leave again if the display device 200 is playing the dynamic video content, and the paused still image may be as shown in fig. 6. Alternatively, if the display device 200 displays only one still image, such as shown in fig. 7, the user may be away directly. No matter which way the user leaves, after the user leaves, the display apparatus 200 cannot be operated any more, and then the display apparatus 200 always displays the content displayed when the user leaves.

In order to avoid the burn-in problem caused by the display device 200 displaying a certain still image for a long time and having no other actions, in the embodiment of the present application, a first preset time may be set to determine whether the brightness of the display device 200 needs to be dimmed, i.e., adjusted to the second brightness.

In this embodiment, a timing device such as a timer may be provided in the display device 200, and the display device 200 starts timing while being powered on. The first preset time may be a period of time after the start of the timer.

As described in the foregoing, the device state of the display device 200 includes the display state and the execution state. It can be determined that the device status has not changed only when neither the display status nor the execution status has changed. Therefore, in step S101, it is further detected whether the display state and the execution state change within the first preset time while the display device 200 is at the first brightness.

If any one or both of the display state and the execution state are changed within a first preset time, determining that the equipment state is changed within the first preset time, for example, if only the display state is changed and the execution state is not changed within the first preset time, determining that the equipment state is changed; or, in a first preset time, determining that the equipment state changes only if the execution state changes and the display state does not change; or, in the first preset time, the display state and the execution state are both changed, and then the equipment state is determined to be changed.

And if the display state and the execution state are not changed within the first preset time, determining that the equipment state is not changed within the first preset time.

In step S101, when the display device 200 is at the first brightness and it is required to determine whether the display state changes, it may be first detected that the screen content displayed by the display 260 changes within a first preset time. The screen content displayed on the display device 200 may be a still image, a moving video, or a function page, a setting page, or the like provided by the display device 200 itself.

Taking the picture content as the static image shown in fig. 7 as an example, if the display device 200 displays the static image on fig. 7 all the time within the first preset time, it may be determined that the picture content of the display device 200 does not change within the first preset time, and further, it may be determined that the display state of the display device 200 does not change.

On the other hand, if the display device 200 displays different still images within the first preset time, it may be determined that the screen content of the display device 200 has changed within the first preset time, and thus it may be determined that the display state of the display device 200 has changed. For example, when the display apparatus 200 displays the still image shown in fig. 7 at the time when the first preset time starts, and displays another still image shown in fig. 8 at a certain time within the first preset time, it may be determined that the display state of the display apparatus 200 has changed within the first preset time.

Taking the picture content as the video image shown in fig. 6 as an example, if the user selects pause while watching the video, the display device 200 may also display a static video image, and if the display device 200 pauses playing within the first preset time, the static image may not change, and thus it may be determined that the display state of the display device 200 does not change within the first preset time. If the user selects to continue playing the video within the first preset time, the still video image on the display device 200 continues to display the next frame, as shown in fig. 9, and it may be determined that the display state of the display device 200 has changed within the first preset time.

In step S101, when the display device 200 is at the first brightness and it is required to determine whether the execution state is changed, it may be first detected whether the display device 200 receives a control instruction input by the user within a first preset time. The control command includes, but is not limited to, a key command input by a user through a remote controller, a voice command input by a user through inputting voice content, and the like.

Taking the example that the user inputs a key instruction to the display device 200 through the remote controller, the key instruction is a control instruction. If the display device 200 receives a key instruction within a first preset time, determining that the execution state of the display device 200 is changed within the first preset time; if the display device 200 does not receive the key instruction within the first preset time, it is determined that the execution state of the display device 200 has not changed within the first preset time.

Taking as an example that the user inputs a voice instruction to the display device 200 by inputting the voice content, the voice instruction is a control instruction. If the display apparatus 200 receives a voice instruction within a first preset time, determining that the execution state of the display apparatus 200 is changed within the first preset time; if the display apparatus 200 does not receive the voice instruction within the first preset time, it is determined that the execution state of the display apparatus 200 has not changed within the first preset time.

In addition, the display apparatus 200 may also be connected with an external apparatus, such as a bluetooth speaker, a bluetooth remote controller, a usb disk, and the like. When the display device 200 is connected to an external device, the display device 200 detects that there is a device access, and also changes the execution state to facilitate the user to use the external device. Therefore, in step S101, when the display device 200 is at the first brightness and it is necessary to determine whether the execution state is changed, it may be first detected whether the display device 200 is connected to the external device within the first preset time.

Taking the example that the display device 200 is connected to a bluetooth speaker or other devices, if the display device 200 is connected to the bluetooth speaker within a first preset time, it is determined that the execution state of the display device 200 has changed within the first preset time; if the display apparatus 200 is not connected to the bluetooth speaker within the first preset time, it is determined that the execution state of the display apparatus 200 has not changed within the first preset time.

Taking the example that the display device 200 is inserted into a device such as a usb disk by a user, if the display device 200 is manually connected to an external device such as a usb disk by the user within a first preset time, it is determined that the execution state of the display device 200 has changed within the first preset time; if the display apparatus 200 is not manually connected to an external apparatus such as a usb disk by a user within a first preset time, it is determined that the execution state of the display apparatus 200 has not changed within the first preset time.

If either or both of the display state and the execution state change within the first preset time, it may be determined that the device state of the display device 200 has changed within the first preset time.

In step S102, if the device state of the display device 200 changes within the first preset time, the display device 200 is controlled to be still at the first brightness, and the time is restarted from the time when the device state changes.

The device status changes within a first predetermined time indicating that the user may continue to use the display device 200. In order to provide a better display effect to the user, it is necessary to still control the display apparatus 200 at a brighter luminance, i.e., the first luminance. However, the time needs to be recalculated in order to resume the calculation of the next first preset time. It is necessary to continuously determine whether the device state of the display device 200 is changed during the next first preset time.

For example, the display device 200 displays a human image at the same time as the start of the timer and displays it at a first brightness, and the display device 200 displays an animal image again for a first preset time, as shown in fig. 10. Then, in step S102, it may be determined that the display state of the display device 200 has changed within the first preset time, and the display device 200 may still display the animal image at the first brightness, and, while counting again at the same time of starting to display the animal image, start to calculate the next first preset time.

For another example, the display device 200 displays a character image at the same time when the timer is started and displays the character image at the first brightness, and the display device 200 performs the action of detecting the usb disk in the first preset time because the user inserts the usb disk device into the display device 200. Then in step S102, it may be determined that the execution state of the display device 200 has changed within the first preset time, and the display device 200 may still display the current content on the display device 200 at the first brightness.

It should be noted that, when the display device 200 is inserted into an external device such as a usb disk by a user, during the process of detecting the usb disk by the display device 200, the content displayed on the display device 200 may still be the original content, but a detection prompt page may also be displayed on the display page of the original content to remind the user that the external device is currently being detected. For example, the display device 200 may display a detection prompt page, such as shown in fig. 11, on the personal image when displaying the personal image as shown in fig. 10.

In step S103, if the device status has not changed within the first preset time, the display device 200 is controlled to be at the second brightness.

As can be seen from the foregoing, when the display device 200 displays a still image at high brightness for a long time, a problem of burn-in occurs. Therefore, in step S103, if it is detected that the device state of the display device 200 does not change within the first preset time, the display brightness of the display device 200 needs to be dimmed, so as to avoid that the display device 200 always displays at a high brightness, and avoid the problem of screen burn-out.

After step S103, when the display device 200 is at the second brightness, it may also be continuously determined whether the device state of the display device 200 has changed. As shown in fig. 12, in step S201, if the device status changes, indicating that the user starts to continue using the display device 200, the display brightness of the display device 200 may be controlled to be increased to be at the first brightness again. In step S202, if the device status has not changed, the current display brightness of the display device 200 is kept to be at the second brightness.

In some embodiments, the display device 200 may also be provided with a screen saver function itself, i.e., if the device status of the display device 200 has not changed for a period of time, the display device 200 may display a screen saver screen. Therefore, after the above step S103, a second preset time may also be set to determine whether the display device 200 needs to display the screen saver screen at the second brightness. Thus, it is ensured that the display device 200 displays the screen saver image and the display luminance of the display device 200 is relatively dark.

The second preset time may refer to a period of time counted from when the display device 200 is at the second brightness. As shown in fig. 13, in step S301, if the device state of the display device 200 changes within the second preset time, which indicates that the user may continue to use the display device 200, the display brightness of the display device 200 may be adjusted to be bright, and the display device 200 is controlled to be at the first brightness; in step S302, if the device status of the display device 200 does not change within the second preset time, the display 260 may be controlled to display the screen saver screen, and at this time, since the display device 200 is still in a state unused by the user, the display device 200 is still in the second brightness, and the brightness is not increased.

In the embodiment of the present application, the first preset time and the second preset time may be set differently according to an actual application situation of the display device 200 or a demand situation of a user. The first preset time and the second preset time may be preset to unalterable time values before the display device 200 leaves the factory; a number of time values may also be pre-configured on the display device 200 so that the user may choose arbitrarily when using the display device 200.

After step S103, if the display device 200 receives a pairing request or a connection request or the like actively transmitted by another bluetooth device, it may also be regarded that the display device 200 has received a control instruction, in which case, the display device 200 may be controlled to be at the first brightness, and the display device 200 may also continue to perform a corresponding action or display a corresponding page or the like on the display 260 in response to the control instruction.

For example, if an external bluetooth headset actively scans the display device 200 and sends a pairing request to the display device 200, the display device 200 needs to display at a first brightness and display a pairing request page after receiving the pairing request, as shown in fig. 14.

Or, after the external bluetooth headset actively scans the display device 200 and detects that the external bluetooth headset is paired with the display device 200, the bluetooth headset may directly send a connection request to the display device 200, and after receiving the connection request, the display device 200 needs to display at the first brightness and perform an action of connecting with the bluetooth headset.

As can be seen from the above, the method for preventing the display device from being burned in the embodiment of the present application can be applied to the display device 200 and executed by the controller 250. The method detects the device state change of the display device 200 itself, and adjusts the display brightness of the display device 200 according to the device state change. If the display device displays a still image or a page for a long time without other operations, the display brightness needs to be adjusted from the first brightness which is relatively bright to the second brightness which is relatively dark, so that the display device 200 is prevented from displaying still content with high brightness for a long time, the problem of screen burning of the OLED display screen is prevented, and the service life of the OLED display screen is prolonged.

In addition, in the display device 200 according to the embodiment of the present application, a monitoring module, a status module, a timer module, a status processing module, a brightness processing module, and the like may be specifically provided. The monitoring module monitors the equipment state of the display equipment 200 in real time after the display equipment 200 is started up, and sends the equipment state to the state module; the timer module is used for timing and accumulating first preset time; when the equipment state changes within the first preset time, the state processing module controls the timer module to restart timing, and accumulates the first preset time again; the brightness processing module determines whether to adjust the current brightness of the display device 200 according to the device status and the current brightness of the display device 200.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

The foregoing description, for purposes of explanation, has been presented in conjunction with specific embodiments. However, the illustrative discussions above are not intended to be exhaustive or to limit the embodiments to the precise forms disclosed above. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles and the practical application, to thereby enable others skilled in the art to best utilize the embodiments and various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A display device, comprising:

a display;

a controller connected to the display, the controller configured to:

when the display equipment is at first brightness, determining whether the equipment state of the display equipment is changed within first preset time;

if the equipment state changes within the first preset time, controlling the display equipment to be still at the first brightness, and starting to count again from the moment when the equipment state changes;

if the equipment state is not changed within the first preset time, controlling the display equipment to be at a second brightness; the first brightness is greater than the second brightness.

2. The display device of claim 1, wherein the controller is further configured to:

determining whether a device state of the display device changes when the display device is at a second brightness;

if the equipment state changes, controlling the display equipment to be at a first brightness;

and if the device state is not changed, controlling the display device to be still at the second brightness.

3. The display device of claim 1, wherein the controller is further configured to:

when the display equipment is at a second brightness, determining whether the equipment state of the display equipment is changed within a second preset time;

if the equipment state changes within the second preset time, controlling the display equipment to be at first brightness;

and if the equipment state is not changed within the second preset time, controlling the display equipment to be still at the second brightness, and controlling a display to display a screen saver picture.

4. The display device of claim 1, wherein the controller is further configured to:

when the display equipment is at first brightness, detecting whether the display state and the execution state of the display equipment change within first preset time;

if any one of the display state and the execution state changes within the first preset time, determining that the equipment state changes within the first preset time;

5. The display device of claim 4, wherein the controller is further configured to:

when the display equipment is at a first brightness, detecting whether the picture content displayed by the display changes within a first preset time;

if the picture content changes within the first preset time, determining that the display state changes within the first preset time;

and if the picture content does not change within the first preset time, determining that the display state does not change within the first preset time.

6. The display device of claim 4, wherein the controller is further configured to:

when the display equipment is at a first brightness, detecting whether the display equipment receives a control instruction input by a user within a first preset time;

if the display equipment receives a control instruction input by a user within the first preset time, determining that the execution state changes within the first preset time;

and if the display equipment does not receive a control instruction input by a user within the first preset time, determining that the execution state is not changed within the first preset time.

7. The display device of claim 6, wherein the controller is further configured to:

and if the display equipment receives a control instruction input by a user within the first preset time, controlling the display equipment to execute a corresponding action or controlling a display to display a corresponding page.

8. The display device of claim 4, wherein the controller is further configured to:

when the display equipment is at first brightness, detecting whether the display equipment is connected with external equipment within first preset time;

if the display device is connected with an external device within the first preset time, determining that the execution state changes within the first preset time;

and if the display equipment is not connected with external equipment within the first preset time, determining that the execution state is not changed within the first preset time.

9. The display device of claim 8, wherein the controller is further configured to:

and if the display equipment is connected with external equipment within the first preset time, controlling a display to display a prompt page connected with the external equipment.

10. A method for preventing burn-in of a display device, comprising: