CN116153247A

CN116153247A - Compensation method of display device and display device

Info

Publication number: CN116153247A
Application number: CN202111396346.4A
Authority: CN
Inventors: 陈相涛
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2023-05-23

Abstract

The application provides a compensation method of display equipment and the display equipment, wherein the display equipment can automatically perform screen pixel compensation operation in a standby state, and when the display equipment is in a normal working state, the display time of the display luminescence operation is accumulated, and then whether a large voltage compensation value or a small voltage compensation value is adopted when the display screen pixel compensation operation is performed is further judged according to the display time. Therefore, the display device can automatically perform screen pixel compensation operations with different degrees under the condition that normal use of a user is not affected, so that the problems of screen burning and aging caused by long-time display of a picture on a display screen are avoided, and meanwhile, the service life of the display screen is greatly prolonged.

Description

Compensation method of display device and display device

Technical Field

The present disclosure relates to the field of display technologies, and in particular, to a compensation method for a display device and a display device.

Background

OLED (Organic Light-Emitting Diode) display screen has characteristics such as self-luminous, frivolous, response time is fast. The display equipment using the OLED display screen has high color expression capability, contrast ratio, response speed, visual angle and other core indexes.

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

Disclosure of Invention

The application provides a compensation method of display equipment and the display equipment, and aims to solve the problem of screen burning easily caused by long-time display of an OLED display screen on the existing display equipment.

In a first aspect, an embodiment of the present application provides a display device, including: and the display is connected with the controller. Wherein the controller is configured to: accumulating the first display time of the luminous operation of the display when the display equipment is in a normal working state; when the display equipment is in a standby state, if the first display time is longer than a first preset time, performing a first compensation operation on the display screen; and if the first display time is smaller than or equal to the first preset time and larger than the second preset time, performing a second compensation operation on the display screen.

The first compensation operation means that the first voltage compensation value is used for performing a first pixel compensation operation on the display screen, and then the second voltage compensation value is used for performing a second pixel compensation operation on the display screen, and the first voltage compensation value is smaller than the second voltage compensation value. And, the second compensation operation represents a first pixel compensation operation for the display screen using the first voltage compensation value.

The display device can automatically perform screen pixel compensation operation in a standby state, and when the display device is in a normal working state, the display time of the display device in a luminous operation is accumulated, and then whether the large voltage compensation value or the small voltage compensation value is adopted when the display device performs the screen pixel compensation operation is further judged according to the display time. Therefore, the display device in the application can automatically perform screen pixel compensation operations of different degrees under the condition that normal use of a user is not affected, so that the problems of screen burning and aging caused by long-time display of a screen of a display are avoided, and meanwhile, the service life of the screen of the display is greatly prolonged.

In some implementations, the controller is further configured to: after the first compensation operation is performed on the display screen, starting from the display equipment to be in a normal working state again, and reclassifying the first display time; when the display equipment is in a standby state again, continuing to determine whether the first display time is longer than the first preset time; if the first display time is longer than the first preset time, continuing to perform the first compensation operation on the display screen; and if the first display time is smaller than or equal to the first preset time and larger than the second preset time, performing a second compensation operation on the display screen.

In some implementations, the controller is further configured to: when the first compensation operation is performed on the display screen, performing a first pixel compensation operation on the display screen by using a first voltage compensation value; determining the temperature of a pixel point on the display screen after the first pixel compensation operation by using a temperature sensor; and when the temperature is reduced to be within a preset temperature range, performing a second pixel compensation operation on the display screen by using a second voltage compensation value.

In some implementations, the controller is further configured to: when the first compensation operation is carried out on the display screen, if a starting-up instruction is received, the display equipment is controlled to be in a normal working state in response to the starting-up instruction; and ending the first compensation operation and continuing to accumulate the first display time.

In some implementations, the controller is further configured to: when the first compensation operation is performed on the display screen, if the operation time of the first pixel compensation operation is longer than a third preset time, the first pixel compensation operation is forcedly ended; and/or if the operation time of the second pixel compensation operation is greater than a fourth preset time, forcibly ending the second pixel compensation operation; after the first compensation operation is performed on the display screen, if a starting-up instruction is not received, the display device is controlled to be still in a standby state.

In some implementations, the controller is further configured to: after the second compensation operation is performed on the display screen, starting from the display equipment in the normal working state again, accumulating the second display time of the display lighting operation; determining whether the second display time is greater than the first preset time when the display device is in the standby state again; if the second display time is longer than the first preset time, performing a first compensation operation on the display screen; and if the second display time is smaller than or equal to the first preset time and larger than the second preset time, continuing to perform the second compensation operation on the display screen.

In some implementations, the controller is further configured to: when the second compensation operation is carried out on the display screen, if a starting-up instruction is received, the display equipment is controlled to be in a normal working state in response to the starting-up instruction; and ending the second compensation operation and continuing to accumulate the first display time.

In some implementations, the controller is further configured to: when the second compensation operation is performed on the display screen, if the operation time of the first pixel compensation is longer than a third preset time, the first pixel compensation operation is forcedly ended; after the second compensation operation is performed on the display screen, if a starting-up instruction is not received, the display device is controlled to be still in a standby state.

In some implementations, the controller is further configured to: responding to the operation of opening the setting page selected by the user, and controlling the display to display the setting page; and performing the first compensation operation on the display screen when the display device is in a standby state in response to an operation of selecting a compensation function on the setting page by a user.

In a second aspect, the present application provides a compensation method for a display device, the method including:

accumulating the first display time of the luminous operation of the display when the display equipment is in a normal working state;

when the display equipment is in a standby state, if the first display time is longer than a first preset time, performing a first compensation operation on a display screen; the first compensation operation means that a first pixel compensation operation is performed on a display screen by using a first voltage compensation value, and then a second pixel compensation operation is performed on the display screen by using a second voltage compensation value, wherein the first voltage compensation value is smaller than the second voltage compensation value;

if the first display time is smaller than or equal to the first preset time and larger than the second preset time, performing a second compensation operation on the display screen; the second compensation operation represents a first pixel compensation operation for the display screen using the first voltage compensation value.

The compensation method of the display device of the second aspect of the present application may be applied to the display device of the first aspect, and specifically executed and implemented by a controller in the display device, so that the beneficial effects that can be achieved by the second aspect are the same as those of the first aspect, and are not described herein again.

Drawings

In order to more clearly illustrate the technical solutions of the present application, the drawings that are needed in the embodiments will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

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

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

fig. 3 illustrates a hardware configuration block diagram of a display device 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 first flow diagram of a compensation operation for a display screen on a display device 200 according to some embodiments;

FIG. 6 illustrates a schematic diagram of different compensation operations corresponding to different first display times, in accordance with some embodiments;

FIG. 7 illustrates a second flow diagram of a compensation operation for a display screen on a display device 200 according to some embodiments;

FIG. 8 illustrates a schematic diagram of a display device 200 performing a compensation operation on a display screen in a first standby state, according to some embodiments;

FIG. 9 illustrates a first flowchart of a first compensation operation for a display screen on a display device 200 according to some embodiments;

FIG. 10 illustrates a second flow diagram of a first compensation operation for a display screen on a display device 200 according to some embodiments;

FIG. 11 illustrates a third flow diagram for performing a first compensation operation on a display screen on a display device 200 according to some embodiments;

FIG. 12 illustrates a third flow diagram for performing a compensation operation on a display screen on a display device 200 according to some embodiments;

FIG. 13 illustrates another schematic diagram of a display device 200 performing a compensation operation on a display screen in a first standby state according to some embodiments

FIG. 14 illustrates a flow diagram of a display device 200 compensating a display screen in response to user operation in accordance with some embodiments;

Fig. 15 shows a schematic diagram of a setup page on a display device 200 according to some embodiments.

Detailed Description

For purposes of clarity and implementation of the present application, the following description will make clear and complete descriptions of exemplary implementations of the present application with reference to the accompanying drawings in which exemplary implementations of the present application are illustrated, it being apparent that the exemplary implementations described are only some, but not all, of the examples of the present application.

It should be noted that the brief description of the terms in the present application is only for convenience in understanding the embodiments described below, and is not intended to limit the embodiments of the present application. Unless otherwise indicated, these terms should be construed in their ordinary and customary meaning.

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

The terms "comprises," "comprising," and "having," 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 explicitly 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 or/and software code that is capable of performing the function associated with that element.

Fig. 1 illustrates 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 device 200 through the smart device 300 or the control apparatus 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 infrared protocol communication or bluetooth protocol communication, and other short-range communication modes, and the display device 200 is controlled by a wireless or wired mode. The user may control the display device 200 by inputting user instructions through keys on a remote control, voice input, control panel input, etc.

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

In some embodiments, the display device 200 may also perform control 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 through a module configured inside the display device 200 device for acquiring voice commands, or the voice command control of the user may be received through a voice control device configured outside the display device 200 device.

In some embodiments, the display device 200 is also in data communication with a server 400. The display device 200 may be permitted to make communication connections via 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 device 200. The server 400 may be a cluster, or may be multiple clusters, and may include one or more types of servers.

Fig. 2 shows a hardware configuration block diagram 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 of a user and convert the operation instruction into an instruction recognizable and responsive to the display device 200, and function as an interaction 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, display apparatus 200 includes at least one of a modem 210, a communicator 220, a detector 230, an external device interface 240, a controller 250, a display 260, an audio output interface 270, memory, a power supply, a user interface.

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

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

In some embodiments, the display 260 may be a liquid crystal display, an OLED display, 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, or other network communication protocol chip or a near field communication protocol chip, and an infrared receiver. The display device 200 may establish transmission and reception of control signals and data signals with the external control device 100 or the server 400 through the communicator 220.

In some embodiments, the user interface may be configured to receive control signals from the control device 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 capturing the intensity of ambient light; alternatively, the detector 230 includes an image collector such as a camera, which may be used to collect external environmental scenes, user attributes, or user interaction gestures, or alternatively, the detector 230 includes a sound collector such as a microphone, or the like, 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, etc. The input/output interface may be a composite input/output interface formed by a plurality of interfaces.

In some embodiments, the modem 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 separate devices, i.e., the modem 210 may also be located in an external device to the main device in which the controller 250 is located, such as an external set-top box or the like.

In some embodiments, the controller 250 controls the operation of the display device and responds to user operations through various software control programs stored on the memory. The controller 250 controls the overall operation of the display apparatus 200. For example: in response to receiving a user command to select 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 operable control. The operations related to the selected object are: displaying an operation of connecting to a hyperlink page, a document, an image, or the like, or executing an operation of a program corresponding to the icon.

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

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

In some embodiments, a graphics processor is used to generate various graphical objects, such as: icons, operation menus, user input instruction display graphics, and the like. The graphic processor comprises an arithmetic unit, which is used for receiving various interactive instructions input by a user to operate and displaying various objects according to display attributes; the device 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, perform video processing such as decompression, decoding, scaling, noise reduction, frame rate conversion, resolution conversion, image composition, etc., according to a standard codec protocol of an input signal, and may obtain a signal that is displayed or played on the directly displayable 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 demultiplexed video signal, including decoding, scaling and the like. And an image synthesis module, such as an image synthesizer, for performing superposition mixing processing on the graphic generator and the video image after the scaling processing according to the GUI signal input by the user or generated 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 frame rate into a video output signal and changing the video output signal to be in accordance with a display format, such as outputting RGB data signals.

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

In some embodiments, a user may input a user command through a Graphical User Interface (GUI) displayed on the display 260, and the user input interface receives the user input command 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 recognizes the sound or gesture through the sensor to receive the user input command.

In some embodiments, a "user interface" is a media interface for interaction and exchange of information between an application or operating system and a user that enables conversion between an internal form of information and a form acceptable to the user. A commonly used presentation form of the user interface is a graphical user interface (Graphic User Interface, GUI), which refers to a user interface related to computer operations that is displayed in a graphical manner. It may be an interface element such as an icon, a window, a control, etc. displayed in a 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 display devices may include a Kernel (Kernel), a command parser (shell), a file system, and an application program. The kernel, shell, and file system together form the basic operating system architecture that allows users to manage files, run programs, and use the system. After power-up, the kernel is started, the kernel space is activated, hardware is abstracted, hardware parameters are initialized, virtual memory, a scheduler, signal and inter-process communication (IPC) are operated and maintained. After the kernel is started, shell and user application programs are loaded again. The application program is compiled into machine code after being started to form a process.

Referring to FIG. 4, in some embodiments, the system is divided into four layers, from top to bottom, an application layer (referred to as an "application layer"), an application framework layer (Application Framework layer) (referred to as a "framework layer"), a An Zhuoyun row (Android run) and a system library layer (referred to as a "system runtime layer"), and a kernel layer, respectively.

In some embodiments, at least one application program is running in the application program layer, and these application programs may be a Window (Window) program of an operating system, a system setting program, a clock program, or the like; or may be 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 (application programming interface, API) and programming framework for the application. The application framework layer includes a number of predefined functions. The application framework layer corresponds to a processing center that decides to let the applications in the application layer act. Through the API interface, the application program can access the resources in the system and acquire the services of the system in the execution.

As shown in fig. 4, the application framework layer in the embodiment of the present application includes a manager (manager), 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 to interact with all activities that are running in the system; a Location Manager (Location Manager) is used to provide system services or applications with access to system Location services; a Package Manager (Package Manager) for retrieving various information about an application Package currently installed on the device; a notification manager (Notification Manager) for controlling the display and clearing of notification messages; a Window Manager (Window Manager) is used to manage icons, windows, toolbars, wallpaper, and desktop components on the user interface.

In some embodiments, the activity manager is used to manage the lifecycle of the individual applications as well as the usual navigation rollback functions, such as controlling the exit, opening, fallback, etc. of the applications. The window manager is used for managing all window programs, such as obtaining the size of the display screen, judging whether a status bar exists or not, locking the screen, intercepting the screen, controlling the change of the display window (for example, reducing the display window to display, dithering display, distorting display, etc.), etc.

In some embodiments, the system runtime layer provides support for the upper layer, the framework layer, and when the framework layer is in use, the android operating system runs the C/C++ libraries contained 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 kernel layer contains at least one of the following drivers: audio drive, display drive, bluetooth drive, camera drive, WIFI drive, USB drive, HDMI drive, sensor drive (e.g., fingerprint sensor, temperature sensor, pressure sensor, etc.), and power supply drive, etc.

The display 260 may be an OLED (Organic Light-Emitting Diode) display. The OLED display screen has the characteristics of self-luminescence, light weight, quick response time and the like. The display device 200 using the OLED display screen has high color representation capability, contrast ratio, response speed, viewing angle, and other core indexes.

However, the material of the OLED display screen itself determines that it cannot be displayed for a long time, and if it is displayed for a long time, a burn-in problem occurs. The so-called burn-in is that after the OLED display displays a certain still image by continuous light emission for a long time, the aging speed is increased, the display brightness is reduced, the image is left, the image is not eliminated, the image remains, and the viewing of a user is affected. In addition, after the problem of screen burning appears, the service life of the OLED display screen can be greatly shortened.

In order to avoid the above problem of burn-in of the OLED display, the embodiment of the present application provides a display device 200, where the display device 200 may include a display 260 and a controller 250. The display 260 has the above-mentioned OLED display screen. Also, as shown in fig. 5, the controller 250 may be configured to perform the steps of:

in step S101, when the display device 200 is in the normal operation state, the first display time of the light emitting operation of the display 260 is accumulated.

In general, the display apparatus 200 emits light only when operating normally, so that a case may occur in which the display screen displays contents for a long time. In the burn-in phenomenon, the residual degree of an image on a display screen is generally related to the display time of the display screen. The degree of compensation to the display screen is in turn related to the extent of image retention on the display screen. Thus, the display time of the display screen is correlated with the compensation length of the display screen.

Further, in the embodiment of the present application, the display time of the display 260 may be obtained cumulatively when the display apparatus 200 is operating normally. And, the time of the integration start may refer to the time of the first power on after the shipment of the display apparatus 200.

The first display time of the display 260 is accumulated if the display apparatus 200 is in the operation state all the time, and the accumulation of the first display time is stopped due to the display 260 being turned off when the display apparatus 200 is in the standby state.

Step S102, if the first display time is greater than the first preset time while the display apparatus 200 is in the standby state, performing a first compensation operation on the display screen.

The first compensation operation means that a first pixel compensation operation is performed on the display screen by using a first voltage compensation value, and then a second pixel compensation operation is performed on the display screen by using a second voltage compensation value, wherein the first voltage compensation value is smaller than the second voltage compensation value, and further the compensation degree of the first pixel compensation operation is different from that of the second pixel compensation operation. In addition, in the embodiment of the present application, the second compensation operation may be performed on the display screen, and the second compensation operation is the first pixel compensation operation performed on the display screen only once.

In order not to affect the normal use of the display device 200 by the user, the compensation operation for the display screen is usually required to be performed while the display device 200 is in standby. Also, in order to determine which compensation operation should be used, it is also necessary to compare with the first preset time or the second preset time with the already accumulated first display time. The first preset time and the second preset time may be specifically set according to the material of the display screen or the actual experience of the technician, for example, the first preset time may be 10 hours, and the second preset time may be 4 hours, but generally the first preset time is greater than the second preset time.

Since the first compensation operation needs to be performed twice and the second compensation operation needs to be performed once, the first compensation operation must be performed to a greater extent than the second compensation operation. Since the first preset time is longer, the longer the first display time that meets the first preset time condition, the longer the first display time is, which means that the longer the display 260 is operated for light emission, in which case, the larger the compensation operation is required for the display screen with the longer the light emission operation time.

In this embodiment, when the display device 200 is in the standby state, a comparison result of the first display time and the first preset time is used to determine whether to use the compensation operation of a greater degree, that is, the first compensation operation. If the first display time is longer than the first preset time, the display screen is lighted and runs for a long time, and at this time, a first compensation operation is needed for the display screen. And if the first display time is less than or equal to the first preset time, then it is necessary to continue to determine whether the first display time is greater than the second preset time.

Step S103, if the first display time is less than or equal to the first preset time and greater than the second preset time, performing a second compensation operation on the display screen.

The first display time being less than or equal to the first preset time and greater than the second preset time indicates that the display 260 is operating for a period of time while not being particularly long. In this case, only the second compensation operation, i.e., the first pixel compensation operation, is required for the display screen with the first voltage compensation value.

If the first display time is less than or equal to the first preset time and less than or equal to the second preset time, the display 260 is not lighted for a long time, so that no compensation operation is needed on the display screen.

As shown in fig. 6, taking the first preset time as 10 hours and the second preset time as 4 hours as an example, if the first display time t1 accumulated when the display apparatus 200 is in the standby state is 11 hours, the first compensation operation may be performed on the display screen of the display apparatus 200 in the standby state at this time by the judgment; if the first display time t1 which has been accumulated is 6 hours while the display apparatus 200 is in the standby state, it is judged that the second compensation operation can be performed on the display screen of the display apparatus 200 in the standby state at that time; if the first display time t1 that has been accumulated while the display apparatus 200 is in the standby state is 3 hours, it is judged that the compensation operation for the display apparatus 200 is not necessary in the standby state at this time.

In addition, since the display device 200 is not supplied with power in the standby state, but the compensation operation needs power support, in some embodiments, whether the display screen needs to be compensated may be determined according to the above content during the process of changing the display device 200 to the standby state, if the compensation operation is needed, a standby lock may be applied to a system of the display device 200, so that a bottom motherboard module performing the compensation operation is powered on, and the standby state of the display device 200 may also be referred to as a pseudo standby state. After the compensation operation is finished, the standby lock is released, so that the bottom motherboard module performing the compensation operation is powered off, and the display device 200 enters a true standby state.

The display device 200 in this embodiment of the present application may automatically perform the screen pixel compensation operation in the standby state, and when the display device is in the normal operating state, accumulate the display time of the display light emitting operation, and then further determine, according to the display time, whether to use the large voltage compensation value or the small voltage compensation value when performing the display screen pixel compensation operation. Therefore, the display device 200 in the embodiment of the application can automatically perform the screen pixel compensation operation with different degrees under the condition that the normal use of the user is not affected, so that the problems of screen burn and aging caused by long-time display of the screen of the display are avoided, and the service life of the screen of the display is greatly prolonged.

The display device 200 may typically last for a long period of use, such as 3 years, 5 years, etc., from factory shipment to end of life. If the lifetime of the display screen is shortened, the lifetime of the display device 200 as a whole is also necessarily shortened. In order to extend the lifetime of the display screen, the compensation operation needs to be performed on the display screen a plurality of times over the entire use time of the display apparatus 200, not just once.

Thus, in some embodiments, as shown in fig. 7, the controller of the display device 200 may be further configured to perform the steps of:

Step S201, after the first compensation operation is performed on the display screen, the first display time is re-accumulated from the time when the display apparatus 200 is again in the normal operation state.

The first display time does not need to be accumulated all the time, and the reset of the first display time is triggered every time the first compensation operation is performed on the display screen. Also, the reset process of the first display time may occur during the standby state of the display apparatus 200, after which the first display time of the display 260 needs to be re-accumulated from 0 once the display apparatus 200 is changed to the normal operation state.

Referring to fig. 8, the display apparatus 200 performs the first compensation operation once in the current standby state since the first display time t1 is 12 hours in the first standby state. After the first compensation operation, the first display time t1 is set to zero, and after a period of time, the display device 200 is started again to be in a normal working state, and at this time, t1 starts to be accumulated from 0.

In step S202, when the display apparatus 200 is in the standby state again, it is continuously determined whether the first display time is greater than the first preset time.

In step S203, if the first display time is greater than the first preset time, the first compensation operation is performed on the display screen.

In step S204, if the first display time is less than or equal to the first preset time and greater than the second preset time, performing a second compensation operation on the display screen.

The implementation of the content of the above steps S202 to S204 may be specifically referred to the content of the foregoing embodiment. Wherein the first compensation operation and the second compensation operation are the same as those in the foregoing embodiment.

When the first compensation operation is performed on the display screen, the first pixel compensation operation is required to be performed first, and then the second pixel compensation operation is required to be performed. In practical situations, even if the first voltage compensation value in the first pixel compensation operation is relatively small, the compensated display screen temperature may be too high. If the second pixel compensation operation is performed at this time, the temperature of the display screen is continuously increased, so that the aging of the display screen is accelerated. To avoid this, in some embodiments, as shown in fig. 9, the controller 250 of the display device 200 may be further configured to perform the steps of:

in step S301, when performing the first compensation operation on the display screen, performing the first pixel compensation operation on the display screen using the first voltage compensation value.

At present, in some common pixel compensation modes, a voltage compensation value required by a pixel point is determined according to the current driving voltage, the driving current, a preset threshold voltage and the like of the pixel point, and then the pixel point is compensated by using the determined voltage compensation value.

In this embodiment of the present application, a technician may preset a uniform voltage compensation value, for example, the first voltage compensation value and the second voltage compensation value described above, according to a material of a display screen, experience of actual testing and use, and the like.

Step S302, determining the temperature of the pixel point on the display screen after the first pixel compensation operation by using a temperature sensor.

After the first pixel compensation operation is completed, the temperature of the pixel point on the display screen may rise, and at this time, the temperature change of the pixel point may be measured by using a temperature sensor connected to the pixel point in the display device 200.

In step S303, when the temperature falls within the preset temperature range, a second pixel compensation operation is performed on the display screen using the second voltage compensation value.

After the first pixel compensation operation is completed, the temperature of the pixel points on the display screen starts to decrease, when the temperature decreases to a certain temperature, the pixel points on the display screen can meet the temperature condition of the pixel compensation operation again, and at the moment, the second pixel compensation operation can be continuously performed on the pixel points.

The pixel point meeting the temperature condition of the compensation operation means that the temperature of the pixel point is reduced to be within a preset temperature range. In the embodiment of the application, the preset temperature range may be set to 10 ℃ to 40 ℃.

In the embodiment of the present application, the temperature measured by the temperature sensor may be obtained at regular time, for example, after the first pixel compensation operation is completed, the temperature measured by the temperature sensor is obtained every 0.5s, and the like.

After the first compensation operation, the pixel points on the display screen are respectively subjected to two pixel compensation operations, and the voltage compensation values of the two pixel compensation operations are overlapped to maximally compensate the pixel points of the screen which are already luminous and run for a long time, so that the service life of the display screen is prolonged as far as possible.

In the embodiment of the application, compensation operation can be performed on all pixel points on the display screen. Before the compensation operation, it may be determined which pixels on the display screen need to be compensated, and then the compensation operation is performed only on the pixels needing to be compensated.

In the standby state of the display apparatus 200, the user may turn on the display apparatus 200 at any time, so that the display apparatus 200 is in the normal operation state again. Alternatively, the display device 200 may be automatically turned on at a certain time according to reservation information or the like. If the display apparatus 200 is performing the compensation operation upon receiving the power-on instruction, it is necessary to terminate the compensation operation being performed and control the display apparatus 200 to power on in time in order to be able to ensure that the user can normally use the display apparatus 200. Further, in some embodiments, as shown in fig. 10, the controller 250 of the display device 200 may be further configured to: when the first compensation operation is performed on the display screen, if a startup instruction is received, the display device 200 is controlled to be in a normal working state in response to the startup instruction. After the display device 200 is turned on, the first compensation operation cannot be continued, and thus the unfinished first compensation operation needs to be ended. Since the first compensation operation is not completed, the pixels of the display screen are not compensated, and thus the first display time needs to be accumulated continuously. Until the next time the display device 200 is in the standby state, it is determined whether the first compensation operation is required by using the accumulated first display time.

The startup instruction may be an instruction sent to the display device 200 by the user by pressing a key of the control device 100 such as a remote controller, a voice control instruction input to the display device 200 by the user through the control device 100 such as the remote controller, or an instruction sent inside the display device 200 when the startup time is reserved by a functional module responsible for timing reservation in the display device 200.

The first pixel compensation operation and the second pixel compensation operation in the above-described first compensation operation may be generally completed within a fixed time, for example, 10 minutes, 15 minutes, 20 minutes, etc., respectively. In some cases there may be a case where the first pixel compensation operation and/or the second pixel compensation operation times out. It will be appreciated that the compensation operation performed in the display device 200 is typically a process implemented in hardware by a software call to a compensation program or thread, and that the compensation operation times out, possibly due to problems that occur during processing by the program or thread. If the timeout compensation operation is not processed, the program or thread is likely to be in a problematic state or occupied all the time, which in turn may cause the display device 200 to be unable to be powered on normally. To avoid this, in some embodiments, as shown in fig. 11, the controller 250 of the display device 200 may also be configured to: when the first compensation operation is performed on the display screen, firstly, whether the first pixel compensation operation is overtime or not is determined, namely, whether the operation time of the first pixel compensation operation is longer than the third preset time or not is determined, if the operation time of the first pixel compensation operation is longer than the third preset time, the first pixel compensation operation is overtime, and the first pixel compensation operation is required to be forcedly ended at the moment. And if the operation time of the first pixel compensation operation is less than or equal to the third preset time, the first pixel compensation operation is not overtime, and after the first pixel compensation operation is finished, whether the temperature of the pixel point is reduced to be within a preset temperature range is detected. Wherein the third preset time may be 10 minutes, 15 minutes, 20 minutes, etc.

The controller 250 may then further continue to determine whether the second pixel compensation operation has timed out, i.e., whether the operation time of the second pixel compensation operation is greater than a fourth preset time, and if the operation time of the second pixel compensation operation is greater than the fourth preset time, then it is indicated that the second pixel compensation operation has timed out, at which time the second pixel compensation operation needs to be forcefully ended. And if the operation time of the second pixel compensation operation is less than or equal to the fourth preset time, it is indicated that the second pixel compensation operation is not timed out, and after the second pixel compensation operation is ended, the display device 200 is controlled to enter the above-described true standby state. Wherein the fourth preset time may be 10 minutes, 15 minutes, 20 minutes, etc.

In addition, after the first compensation operation is performed on the display screen, if the display device 200 does not receive the power-on command, the controller 250 controls the display device 200 to be still in the standby state, where the standby state refers to a true standby state after the first compensation operation is ended.

In the foregoing, not only the first compensation operation but also the second compensation operation need to be performed a plurality of times for the display screen throughout the use time of the display apparatus 200. Accordingly, in some embodiments, as shown in fig. 12, the controller 250 of the display device 200 may be further configured to perform the steps of:

In step S401, after the second compensation operation is performed on the display screen, the second display time of the light emitting operation of the display 260 is accumulated from the time when the display apparatus 200 is again in the normal operation state.

Similar to the first compensation operation described above, in the embodiment of the present application, the accumulated display time for the second compensation operation is reset every time the second compensation operation is performed on the display screen. And, if the second compensation operation has been performed on the display screen in step S103, the display time to be accumulated is hereinafter referred to as a second display time. And if the second compensation operation is not performed on the display screen after step S102, the first display time is still continuously accumulated, and when the display apparatus 200 is in the standby state again, it is still determined whether the second compensation operation is performed on the display screen using the first display time.

Referring to fig. 13, the display apparatus 200 performs the first compensation operation in the current standby state since the first display time t1 is 5 hours in the first standby state. After the second compensation operation, when the display device 200 is turned on again and is in a normal working state, the second display time t2 starts to be accumulated. When the display device 200 enters the standby state again, the second display time t2 is 6 hours, and then, during the standby, a second compensation operation is performed on the display device 200, and when the display device 200 is powered on again and is in the normal working state, the second display time t2 is accumulated again from 0.

In step S402, when the display apparatus 200 is in the standby state again, it is determined whether the second display time is greater than the first preset time.

Step S403, if the second display time is greater than the first preset time, performing a first compensation operation on the display screen;

in step S404, if the second display time is less than or equal to the first preset time and greater than the second preset time, continuing to perform the second compensation operation on the display screen.

In some embodiments, in step S103, the controller 250 of the display device 200 may be further configured to: when the second compensation operation is performed on the display screen, if a start-up instruction is received, the display device 200 is controlled to be in a normal operating state in response to the start-up instruction. After the display device 200 is turned on, the second compensation operation cannot be continued, and thus the unfinished second compensation operation needs to be ended. Since the second compensation operation is not completed, the pixels of the display screen are not compensated, and thus the first display time needs to be accumulated continuously.

And, in some embodiments, in step S404, the controller 250 of the display device 200 may be further configured to: when the second compensation operation is performed on the display screen, if a start-up instruction is received, the display device 200 is controlled to be in a normal operating state in response to the start-up instruction. And ending the second compensation operation and continuing to accumulate the second display time.

In the embodiment of the present application, the process of performing the second compensation operation on the display screen separately is the same as the process of performing the first pixel compensation operation in the first compensation operation in the above embodiment, and therefore, the second compensation operation also needs to be completed within the third preset time. In this process, the controller 250 of the display device 200 may be configured to: when the second compensation operation is performed on the display screen, if the operation time of the first pixel compensation is longer than the third preset time, the first pixel compensation operation is forcedly ended.

In addition, after the second compensation operation is performed on the display screen, if the display device 200 does not receive the power-on command, the controller 250 controls the display device 200 to be still in the standby state, where the standby state refers to the above-mentioned true standby state.

The display device 200 in the embodiment of the present application can passively perform the compensation operation under the operation control of the user, in addition to automatically performing the compensation operation. In the system setting of the display apparatus 200, the option of the compensation function may be preconfigured. When the user wants to perform the compensation maintenance on the display screen, an option of the compensation function may be selected on a setup page of the display device 200 manually or by means of voice control. Next, when the display apparatus 200 is in the standby state, a first compensation operation is performed again on the display screen. In this process, as shown in fig. 14, the controller 250 of the display device 200 may be configured to perform the steps of:

In step S501, in response to the user selecting an operation to open the setting page, the display 260 is controlled to display the setting page.

See the setup page shown in fig. 15, on which several function options including the compensation function option are included. The user may select any one of the functions according to his own needs, and further change the state, display effect, or some parameters of the display device 200, etc.

In step S502, in response to the user' S operation of selecting the compensation function on the setting page, a first compensation operation is performed on the display screen while the display apparatus 200 is in the standby state. And, after step S502, the first display time also needs to be reset.

As can be seen from the foregoing, in the embodiments of the present application, a display device 200 is provided, where the display device 200 can automatically perform the screen pixel compensation operation in the standby state, and when the display device 200 is in the normal operating state, the display time of the display lighting operation is accumulated, and then according to the display time, it is further determined whether the large voltage compensation value or the small voltage compensation value is adopted when the display screen pixel compensation operation is performed. Therefore, the display device 200 can automatically perform the screen pixel compensation operation with different degrees without affecting the normal use of the user, so as to avoid the problems of screen burn and aging caused by long-time display of the screen of the display, and greatly prolong the service life of the screen of the display.

In addition, in order to solve the problem of screen burn-in of the OLED display screen in the display device 200, a compensation method of the display device is further provided in the embodiments of the present application. The method may be applied to the display device 200 of the foregoing embodiment and implemented by the controller 250 of the display device 200. Specifically, the method may include the steps of:

The first compensation operation means that a first pixel compensation operation is performed on the display screen by using a first voltage compensation value, and then a second pixel compensation operation is performed on the display screen by using a second voltage compensation value, wherein the first voltage compensation value is smaller than the second voltage compensation value.

Wherein the second compensation operation represents a first pixel compensation operation of the display screen using the first voltage compensation value.

Since the compensation method of the display device in the embodiment of the present application can be applied to the display device 200 in the foregoing embodiment, other contents related to the method can be referred to the contents of the foregoing embodiment, and will not be described herein.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution 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 scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions 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, characterized by comprising:

a display;

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

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

after the first compensation operation is performed on the display screen, starting from the display equipment to be in a normal working state again, and reclassifying the first display time;

When the display equipment is in a standby state again, continuing to determine whether the first display time is longer than the first preset time;

if the first display time is longer than the first preset time, continuing to perform the first compensation operation on the display screen;

and if the first display time is smaller than or equal to the first preset time and larger than the second preset time, performing a second compensation operation on the display screen.

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

when the first compensation operation is performed on the display screen, performing a first pixel compensation operation on the display screen by using a first voltage compensation value;

determining the temperature of a pixel point on the display screen after the first pixel compensation operation by using a temperature sensor;

and when the temperature is reduced to be within a preset temperature range, performing a second pixel compensation operation on the display screen by using a second voltage compensation value.

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

when the first compensation operation is carried out on the display screen, if a starting-up instruction is received, the display equipment is controlled to be in a normal working state in response to the starting-up instruction;

And ending the first compensation operation and continuing to accumulate the first display time.

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

when the first compensation operation is performed on the display screen, if the operation time of the first pixel compensation operation is longer than a third preset time, the first pixel compensation operation is forcedly ended;

and/or if the operation time of the second pixel compensation operation is greater than a fourth preset time, forcibly ending the second pixel compensation operation;

after the first compensation operation is performed on the display screen, if a starting-up instruction is not received, the display device is controlled to be still in a standby state.

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

after the second compensation operation is performed on the display screen, starting from the display equipment in the normal working state again, accumulating the second display time of the display lighting operation;

determining whether the second display time is greater than the first preset time when the display device is in the standby state again;

If the second display time is longer than the first preset time, performing a first compensation operation on the display screen;

and if the second display time is smaller than or equal to the first preset time and larger than the second preset time, continuing to perform the second compensation operation on the display screen.

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

when the second compensation operation is carried out on the display screen, if a starting-up instruction is received, the display equipment is controlled to be in a normal working state in response to the starting-up instruction;

and ending the second compensation operation and continuing to accumulate the first display time.

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

when the second compensation operation is performed on the display screen, if the operation time of the first pixel compensation is longer than a third preset time, the first pixel compensation operation is forcedly ended;

after the second compensation operation is performed on the display screen, if a starting-up instruction is not received, the display device is controlled to be still in a standby state.

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

responding to the operation of opening the setting page selected by the user, and controlling the display to display the setting page;

and responding to the operation of selecting the compensation function on the setting page by a user, and performing the first compensation operation on the display screen when the display device is in a standby state.

10. A compensation method for a display device, comprising: