CN114694599B

CN114694599B - Display device and mura processing method

Info

Publication number: CN114694599B
Application number: CN202011564255.2A
Authority: CN
Inventors: 赵树斌; 张盼涛
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2024-04-09
Anticipated expiration: 2040-12-25
Also published as: CN114694599A

Abstract

The embodiment of the invention provides display equipment and a mura processing method, relates to the technical field of display, and can dynamically adjust the demura data of the display equipment to eliminate the dynamically changed mura, thereby providing better uniform use experience for users. The method comprises the following steps: receiving a brightness correction instruction; the brightness correction instruction is used for indicating to optimize the brightness of the display; determining demux data of a mura area in the display according to the first accumulated display time in response to the brightness correction instruction; the first accumulated display time is used for indicating the accumulated starting time of the display, and the demura data is related to the first accumulated display time; the brightness of the mura area is adjusted according to the demura data. The invention is used for brightness correction of the display equipment.

Description

Display device and mura processing method

Technical Field

The invention relates to the technical field of display, in particular to a display device and a mura processing method.

Background

The brightness uniformity of the liquid crystal display device is an important index for measuring the display effect of the liquid crystal display device, and light spots caused by uneven brightness of a screen of the liquid crystal display device in the use process can cause the reduction of the use experience of a user. The light spot that occurs due to the uneven brightness when the liquid crystal display device is used is called mura.

Aiming at the mura problem of the liquid crystal display device, at present, when the liquid crystal display device leaves a factory, the memory chip in the liquid crystal display device generally stores the demux data to eliminate the mura problem, and when the liquid crystal display device is started, the demux data can be called to correct and compensate the mura to eliminate the mura. However, since the demux data are fixed, the mura on the lcd device may change with time, and thus, when the mura of the lcd device changes, the fixed demux data cannot eliminate the changed mura, thereby affecting the user experience.

Disclosure of Invention

The embodiment of the invention provides a display device and a mura processing method, which can dynamically adjust the mura data of the display device to eliminate the dynamically changed mura, thereby improving the use experience of a user.

In order to achieve the above purpose, the embodiment of the present invention adopts the following technical scheme:

in a first aspect, there is provided a display device including: a display and a controller. Wherein the display is configured to display a user interface; the controller is configured to:

receiving a brightness correction instruction; the brightness correction instruction is used for indicating to optimize the brightness of the display;

Determining demux data of a mura area in the display according to the first accumulated display time in response to the brightness correction instruction; the first accumulated display time is used for indicating the accumulated starting time of the display, and the demura data is related to the first accumulated display time;

the brightness of the mura area is adjusted according to the demura data.

In a second aspect, there is provided a mura processing method applied to the display device provided in the first aspect, including:

the brightness of the mura area is adjusted according to the demura data.

The display device provided by the embodiment of the invention can determine the corresponding demux data according to the mura changes of the display in the display device in different accumulated display time, so that the display device can continuously and dynamically adjust the demux data according to the difference of the accumulated display time, and the dynamically changed mura is compensated by the dynamically adjusted demux data so as to eliminate the mura in the display, thereby improving the use experience of a user.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of an operation scenario between a display device and a control device according to an embodiment of the present invention;

fig. 2 is a hardware configuration block diagram of a display device according to an embodiment of the present invention;

fig. 3 is a hardware configuration block diagram of a control device according to an embodiment of the present invention;

FIG. 4 is a schematic flow chart of a mura treatment method according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a user interface for a display device to request correction of screen brightness according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a user interface for correcting screen brightness of a display device according to an embodiment of the present invention;

fig. 7 is a schematic diagram illustrating division of sampling units in a display device according to an embodiment of the present invention;

FIG. 8 is a second flow chart of a mura treatment method according to the present invention;

FIG. 9 is a schematic diagram showing brightness of a display device at different cumulative display times according to an embodiment of the present invention;

fig. 10 is a schematic diagram of a display device block sampling according to an embodiment of the present invention;

FIG. 11 is a third flow chart of a mura treatment method according to the present invention;

FIG. 12 is a flowchart of a mura treatment method according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a display device according to an embodiment of the present invention.

Detailed Description

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

Based on the exemplary embodiments described herein, all other embodiments that may be obtained by one of ordinary skill in the art without making any inventive effort are within the scope of the claims appended hereto. Furthermore, while the disclosure is presented in the context of an exemplary embodiment or embodiments, it should be appreciated that the various aspects of the disclosure may, separately, comprise a complete embodiment.

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 describing a particular sequential or chronological order, unless otherwise indicated (Unless otherwise indicated). It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.

Furthermore, the terms "comprise" and "have," 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 those elements expressly listed, but may include other elements not expressly listed or inherent to such product or apparatus.

The term "module" as used in this application 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 function associated with that element.

The term "remote control" as used in this application refers to a component of an electronic device (such as a display device as disclosed in this application) that can typically be controlled wirelessly over a relatively short distance. The electronic device is typically connected to the electronic device using infrared and/or Radio Frequency (RF) signals and/or bluetooth, and may also include functional modules such as WiFi, wireless universal serial bus (universal serial bus, USB), bluetooth, motion sensor, etc. For example: the hand-held touch remote controller replaces most of the physical built-in hard keys in a general remote control device with a touch screen user interface.

The term "gesture" as used herein refers to a user behavior by which a user expresses an intended idea, action, purpose, and/or result through a change in hand shape or movement of a hand, etc.

A schematic diagram of an operation scenario between a display device and a control apparatus according to an embodiment is exemplarily shown in fig. 1. As shown in fig. 1, a user may operate the display apparatus 200 through the mobile terminal 300 and 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 200 includes infrared protocol communication or bluetooth protocol communication, and other short-range communication modes, etc., and the display device 200 is controlled by a wireless or other wired mode. The user may input user instructions through keys on a remote control, voice input, control panel input, etc., to control the display device 200. Such as: the user can input corresponding control instructions through volume up-down keys, channel control keys, up/down/left/right movement keys, voice input keys, menu keys, on-off keys, etc. on the remote controller to realize the functions of the control display device 200.

In some embodiments, mobile terminals, tablet computers, notebook computers, and other smart devices 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. The application, by configuration, may provide various controls to the user in an intuitive User Interface (UI) on a screen associated with the smart device.

In some embodiments, the mobile terminal 300 may install a software application with the display device 200, implement connection communication through a network communication protocol, and achieve the purpose of one-to-one control operation and data communication. Such as: the mobile terminal 300 and the display device 200 can be used for establishing a control instruction protocol, synchronizing a remote control keyboard to the mobile terminal 300, and controlling the functions of the display device 200 by controlling a user interface on the mobile terminal 300; the audio/video content displayed on the mobile terminal 300 may also be transmitted to the display device 200, so as to implement a synchronous display function.

As also shown in fig. 1, the display device 200 is also in data communication with the server 400 via a variety of communication means. The display device 200 may be permitted to make communication connections via a local area network (local area network, LAN), a wireless local area network (wireless local area network, WLAN), and other networks. The server 400 may provide various contents and interactions to the display device 200. By way of example, display device 200 receives software program updates, or accesses a remotely stored digital media library, by sending and receiving information, and by electronic program guide (electrical program guide, EPG) interaction. The server 400 may be a cluster, or may be multiple clusters, and may include one or more types of servers. Other web service content such as video on demand and advertising services are provided through the server 400.

The display device 200 may be a liquid crystal display, an organic light-emitting diode (OLED) display, or a projection display device. The particular display device type, size, resolution, etc. are not limited, and those skilled in the art will appreciate that the display device 200 may be subject to some changes in performance and configuration as desired.

The display device 200 may additionally provide a smart network television function of a computer support function in addition to a broadcast receiving television function, including, but not limited to, a network television, a smart television, an internet protocol television (internet protocol television, IPTV), and the like.

A hardware configuration block diagram of the display device 200 according to an exemplary embodiment is illustrated in fig. 2.

In some embodiments, at least one of the controller 250, the modem 210, the communicator 220, the detector 230, the input/output interface 255, the display 275, the audio output interface 285, the memory 260, the power supply 290, the user interface 265, and the external device interface 240 is included in the display apparatus 200.

In some embodiments, the display 275 is configured to receive image signals from the output of the processor 254, and to display video content and images and components of the menu manipulation interface.

In some embodiments, display 275 includes a display screen assembly for presenting pictures, and a drive assembly for driving the display of images.

In some embodiments, the video content is displayed from broadcast television content, or alternatively, from various broadcast signals that may be received via a wired or wireless communication protocol. Alternatively, various image contents received from the network server side transmitted from the network communication protocol may be displayed.

In some embodiments, the display 275 is used to present a user interface generated in the display device 200 and used to control the display device 200.

In some embodiments, depending on the type of display 275, a drive assembly for driving the display is also included.

In some embodiments, where display 275 is a projection display, it may also include a projection device and projection screen.

In some embodiments, communicator 220 is a component for communicating with external devices or external servers according to various communication protocol types. For example: the communicator may include at least one of a Wifi chip, a bluetooth communication protocol chip, a wired ethernet communication protocol chip, or other network communication protocol chip or a near field communication protocol chip, and an infrared receiver.

In some embodiments, the display apparatus 200 may establish control signal and data signal transmission and reception between the communicator 220 and the external control device 100 or the content providing apparatus.

In some embodiments, the user interface 265 may be used to receive infrared 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 interactions with the outside of the display device 200.

In some embodiments, the detector 230 includes an optical receiver, a sensor for capturing the intensity of ambient light, a parameter change may be adaptively displayed by capturing ambient light, etc.

In some embodiments, the detector 230 may further include an image collector, such as a camera, a video camera, etc., which may be used to collect external environmental scenes, collect attributes of a user or interact with a user, adaptively change display parameters, and recognize a user gesture to realize an interaction function with the user.

In some embodiments, the detector 230 may also include a temperature sensor or the like, such as by sensing ambient temperature.

In some embodiments, the display device 200 may adaptively adjust the display color temperature of the image. The display device 200 may be adjusted to display a colder color temperature shade of the image, such as when the temperature is higher, or the display device 200 may be adjusted to display a warmer color shade of the image when the temperature is lower.

In some embodiments, the detector 230 may also be a sound collector or the like, such as a microphone, that may be used to receive the user's sound. Illustratively, a voice signal including a control instruction for a user to control the display apparatus 200, or an acquisition environmental sound is used to recognize an environmental scene type so that the display apparatus 200 can adapt to environmental noise.

In some embodiments, as shown in fig. 2, the input/output interface 255 is configured to enable data transfer between the controller 250 and external other devices or other controllers 250. Such as receiving video signal data and audio signal data of an external device, command instruction data, or the like.

In some embodiments, external device interface 240 may include, but is not limited to, the following: any one or more of a high definition multimedia interface (high definition multimedia interface, HDMI) interface, analog or data high definition component input interface, composite video input interface, USB input interface, RGB port, etc. may be used. The plurality of interfaces may form a composite input/output interface.

In some embodiments, as shown in fig. 2, the modem 210 is configured to receive the broadcast television signal by a wired or wireless receiving manner, and may perform modulation and demodulation processes such as amplification, mixing, and resonance, and demodulate the audio/video signal from a plurality of wireless or wired broadcast television signals, where the audio/video signal may include a television audio/video signal carried in a television channel frequency selected by a user, and an EPG data signal.

In some embodiments, the frequency point demodulated by the modem 210 is controlled by the controller 250, and the controller 250 may send a control signal according to the user selection, so that the modem responds to the television signal frequency selected by the user and modulates and demodulates the television signal carried by the frequency.

In some embodiments, the broadcast television signal may be classified into a terrestrial broadcast signal, a cable broadcast signal, a satellite broadcast signal, an internet broadcast signal, or the like according to a broadcasting system of the television signal. Or may be differentiated into digital modulation signals, analog modulation signals, etc., depending on the type of modulation. Or it may be classified into digital signals, analog signals, etc. according to the kind of 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 this way, the set-top box outputs the television audio and video signals modulated and demodulated by the received broadcast television signals to the main body equipment, and the main body equipment receives the audio and video signals through the first input/output interface.

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 may control the overall operation of the display apparatus 200. For example: in response to receiving a user command to select to display a UI object on the display 275, 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 or an icon. Operations related to the selected object, such as: 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. The user command for selecting the UI object may be an input command through various input means (e.g., mouse, keyboard, touch pad, etc.) connected to the display apparatus 200 or a voice command corresponding to a voice uttered by the user.

As shown in fig. 2, the controller 250 includes at least one of a random access memory (random access memory, RAM) 251, a read-only memory (ROM) 252, a video processor 270, an audio processor 280, other processors (e.g., a graphics processor (graphics processing unit, GPU) 253, a central processing unit (central processing unit, CPU) 254, a communication interface (Communication Interface), and a communication Bus (Bus) 256, which connects the respective components.

In some embodiments, RAM 251 is used to store temporary data for the operating system or other on-the-fly programs.

In some embodiments, ROM 252 is used to store instructions for various system boots.

In some embodiments, ROM 252 is used to store a basic input/output system, called a basic input/output system (basic input output system, BIOS), for performing power-on self-test of the system, initialization of functional blocks in the system, drivers for basic input/output of the system, and booting the operating system.

In some embodiments, upon receipt of a power-on signal, the display device 200 power starts up and the CPU 254 runs system boot instructions in the ROM 252, copying temporary data of the operating system stored in memory into the RAM 251 in order to boot up or run the operating system. When the operating system is started, the CPU 254 copies temporary data of various applications in the memory to the RAM 251, and then, facilitates the starting or running of the various applications.

In some embodiments, CPU 254 is used to execute operating system and application program instructions stored in memory. And executing various application programs, data and contents according to various interactive instructions received from the outside, so as to finally display and play various audio and video contents.

In some exemplary embodiments, the CPU 254 may include a plurality of processors. The plurality of processors may include one main processor and one or more sub-processors. A main processor for performing some operations of the display apparatus 200 in the pre-power-up mode and/or displaying a picture in the normal mode. One or more sub-processors for one operation in a standby mode or the like.

In some embodiments, the GPU 253 is configured to generate various graphics objects, such as: icons, operation menus, user input instruction display graphics, and the like. The device comprises an arithmetic unit, wherein the arithmetic unit is used for receiving various interaction instructions input by a user to carry out operation and displaying various objects according to display attributes. And a renderer for rendering the various objects obtained by the arithmetic unit, wherein the rendered objects are used for being displayed on a display.

In some embodiments, video processor 270 is configured to receive external video signals, perform video processing such as decompression, decoding, scaling, noise reduction, frame rate conversion, resolution conversion, image composition, etc., according to standard codec protocols for input signals, and may result in signals that are displayed or played on directly displayable device 200.

In some embodiments, video processor 270 includes a demultiplexing module, a video decoding module, an image compositing module, a frame rate conversion module, a display formatting module, and the like.

The demultiplexing module is used for demultiplexing the input audio/video data stream, such as the input MPEG-2 data stream, and demultiplexes the audio/video data stream into video signals, audio signals and the like.

And the video decoding module is used for processing the demultiplexed video signals, including decoding, scaling and the like.

An image composition module, such as an image synthesizer, is used for performing superposition mixing processing on the video image after the scaling processing according to the user input or the self-generated graphical user interface (graphical user interface, GUI) signal by the graphic generator so as to generate an image signal for display.

The frame rate conversion module is configured to convert the input video frame rate, for example, converting the 60Hz frame rate into the 120Hz frame rate or the 240Hz frame rate, and the common format is implemented in an inserting frame manner.

The display format module is used for converting the received frame rate into a video output signal, and changing the video output signal to a signal conforming to the display format, such as outputting an RGB data signal.

In some embodiments, the graphics processor 253 may be integrated with the video processor, may be separately provided, may perform processing of graphics signals output to the display when the integrated configuration is provided, and may perform different functions, such as gpu+frame rate conversion (frame rate conversion, FRC) architecture, respectively, when the integrated configuration is separately provided.

In some embodiments, the audio processor 280 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 signal amplification, so as to obtain a sound signal that can be played in a speaker.

In some embodiments, video processor 270 may include one or more chips. Audio processor 280 may also include one or more chips.

In some embodiments, video processor 270 and audio processor 280 may be separate chips or integrated with controller 250 in one or more chips.

In some embodiments, the audio output, under the control of the controller 250, receives sound signals output by the audio processor 280, such as: the speaker 286, and an external sound output terminal that can be output to a sound emitting device of an external device, other than the speaker carried by the display device 200 itself, such as: external sound interface or earphone interface, etc. can also include the close range communication module in the communication interface, for example: and the Bluetooth module is used for outputting sound of the Bluetooth loudspeaker.

The power supply 290 supplies power input from an external power source to the display device 200 under the control of the controller 250. The power supply 290 may be a built-in power supply circuit installed inside the display device 200, or may be an external power supply installed outside the display device 200, and a power supply interface for providing an external power supply in the display device 200.

The user interface 265 is used to receive a user input signal and then transmit the received user input signal to the controller 250. The user input signal can be a remote control signal received through an infrared receiver or various user control signals received through a network communication module.

In some embodiments, a user inputs a user command through the control apparatus 100 or the mobile terminal, the user interface 265 transmits the user command according to the user input, and the display device 200 responds to the user input through the controller 250.

In some embodiments, the user may input user commands through a Graphical User Interface (GUI) displayed on the display 275, and the user interface 265 may receive the user input commands through the Graphical User Interface (GUI). Alternatively, the user may enter user commands by entering specific sounds or gestures, which the user interface 265 may then recognize by a sensor to receive user input commands.

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 a user interface is a GUI, which refers to a graphically displayed user interface related to computer operations. 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.

The memory 260 includes memory storing various software modules for driving the display device 200. Such as: memory 260 may have stored therein various software modules including: at least one of a basic module, a detection module, a communication module, a display control module, a browser module, various service modules and the like.

The base module is a bottom software module for signal communication between the various hardware in the display device 200 and for sending processing and control signals to the upper modules. The detection module is a management module for collecting various information from various sensors or user interfaces 265 and performing digital-to-analog conversion and analysis management.

And the communication module is used for carrying out control and data communication with external equipment. The display control module is used for controlling the display to display the image content, and can be used for playing the multimedia image content, the UI interface and other information. And the browser module is used for executing data communication between the browsing servers. And the service module is used for providing various services and various application programs. Meanwhile, the memory 260 is also used to store received external data and user data, images of various items in various user interfaces, visual effect maps of focus objects, and the like.

Fig. 3 exemplarily shows a block diagram of a configuration of the control apparatus 100 in accordance with an exemplary embodiment. As shown in fig. 3, the control device 100 includes a controller 110, a communication interface 130, a user input/output interface 140, a memory 190, and a power supply 180.

The control apparatus 100 is configured to control the display device, and to receive an input operation instruction of the user, and to convert the operation instruction into an instruction recognizable and responsive to the display device, functioning as an interaction intermediary between the user and the display device. Such as: the user responds to the channel addition and subtraction operation by operating the channel addition and subtraction key on the control apparatus 100.

In some embodiments, the control apparatus 100 may be a smart device. Such as: the control apparatus 100 may install various applications for controlling the display device according to user's needs.

In some embodiments, as shown in fig. 1, a mobile terminal 300 or other intelligent electronic device, after installing an application that manipulates a display device 200, may function similarly to the control apparatus 100. Such as: the user may implement the functions of the physical keys of the control apparatus 100 by installing various function keys or virtual buttons of a graphical user interface available on the mobile terminal 300 or other intelligent electronic device.

The controller 110 includes a processor 112, RAM 113 and ROM 114, a communication interface 130, and a communication bus. The controller 110 is used to control the operation and operation of the control device 100, as well as the communication collaboration among the internal components and the external and internal data processing functions.

The communication interface 130 enables communication of control signals and data signals with the display device under the control of the controller 110. Such as: the received user input signal is sent to the display device. The communication interface 130 may include at least one of a WiFi chip 131, a bluetooth module 132, an NFC module 133, and other near field communication modules.

A user input/output interface 140, wherein the input interface includes at least one of a microphone 141, a touchpad 142, a sensor 143, keys 144, and other input interfaces. Such as: the user can realize the user instruction input function through actions such as voice, touch, gesture, pressing and the like, and the input interface converts the received analog signals into digital signals and converts the digital signals into corresponding instruction signals and sends the corresponding instruction signals to the display equipment.

The output interface includes an interface that transmits the received user instruction to the display device 200. In some embodiments, an infrared signal interface may be used, or a radio frequency signal interface may be used. Such as: when the interface is an infrared signal interface, a user input instruction is required to be converted into an infrared control signal according to an infrared control protocol, and the infrared control signal is transmitted to the display equipment through an infrared transmitting module. And the following steps: when the interface is a radio frequency signal interface, a user input instruction is converted into a digital signal, and then the digital signal is modulated according to a radio frequency control signal modulation protocol and then is transmitted to display equipment by a radio frequency transmitting terminal.

In some embodiments, the control device 100 includes at least one of a communication interface 130 and a user input/output interface 140. The control device 100 is provided with a communication interface 130, such as: the WiFi, bluetooth, NFC, etc. modules may send the user input instruction to the display device 200 through a WiFi protocol, or a bluetooth protocol, or an NFC protocol code.

A memory 190 for storing various operating programs, data and applications for driving and controlling the display device under the control of the controller 110. The memory 190 may store various control signal instructions input by a user.

The power supply 180, which is used to provide operating power support for the various elements of the control device 100 under the control of the controller, may include a battery and associated control circuitry.

In some embodiments, the display device 200 shown in fig. 1 may be a liquid crystal display device, such as a liquid crystal television, and as the cumulative display time of the liquid crystal television increases, there are various factors that may cause mura of the display device screen to change, for example, a deposition phenomenon may occur in the liquid crystal in the display panel due to the influence of gravity, so that the liquid crystal is unevenly distributed in the display panel, and thus, the brightness of each area of the display panel may be unevenly and dynamically changed. Of course, the reason for the dynamic mura problem of the lcd device may be that when the backlight module of the lcd device works for a long time, the relative position between the display panel and the led changes due to the heat emitted by the backlight module, or the problem is obvious in the case of the 8K resolution and large-size display device due to other factors such as the backlight film. Such dynamic mura problems seriously affect the user experience, and generally the scheme of static demura data cannot effectively solve the problem.

Aiming at the problem of dynamic change of mura areas in liquid crystal display equipment, the embodiment of the application provides a mura processing method which is applied to the display equipment and at least comprises a display and a controller. As shown in fig. 4, the controller is configured to perform the steps of:

s101, receiving a brightness correction instruction.

Wherein the brightness correction instruction is used for indicating that the brightness of the display is optimized.

Specifically, the display device may further include a control device, which may be a remote controller or a mobile terminal. When the control device is a remote controller, the control device can communicate with the controller through infrared protocol communication or Bluetooth protocol communication and other short-distance communication modes; when the control device is a mobile terminal, a corresponding application program can be installed in the mobile terminal, and the mobile terminal is communicated with the controller through a network communication protocol or an infrared protocol and other short-distance communication modes.

In some embodiments, the display device may further include a touch assembly through which a user may interact with the display.

When the display equipment needs to carry out brightness correction, the display equipment can display a brightness correction request on a user interface of a display through the controller, and a user can confirm the brightness correction request through the control device, namely, a brightness correction instruction is sent to the controller so as to start a brightness correction flow of the display equipment, and mura is eliminated.

For example, when the display device needs to correct the brightness of the display, a prompt message "whether to correct the screen brightness" as shown in fig. 5 may be displayed on the user interface of the display through the controller, and at this time, the user may select whether to perform brightness correction through the control device. When the control device is a remote controller, a user can select options through a left key and a right key (add-subtract key or channel control key) on the remote controller; when the control device is a mobile terminal, the user can select options through the application program downloaded in the mobile terminal, and the application program downloaded by the mobile terminal can simulate the functions of all keys of the remote controller, so that the functions of the remote controller are realized.

In some embodiments, when the display device includes a touch component, the user may also touch the corresponding option box through the touch component to select the option. Of course, those skilled in the art may initiate the brightness correction procedure of the display by other methods, which is not limited to the embodiments of the present application.

When the control device determines that "yes" is selected, the controller receives a brightness correction instruction.

It should be noted that, the display device may be the display device 200 shown in fig. 1, the control device may be the control device 100 or the mobile terminal 300 shown in fig. 1, and the display device and the control device may have the same functions as the corresponding devices in fig. 1, which are not described herein.

In some embodiments, after the user selects the correction screen brightness, the controller may display a progress prompt as shown in fig. 6 on the user interface of the display.

S102, in response to the brightness correction instruction, determining demura data of a mura area in the display according to the first accumulated display time.

Wherein the first cumulative display time is used for indicating the cumulative on time of the display, and the demura data is related to the first cumulative display time.

Specifically, since the mura form of the display device changes with the accumulated display time, the mura phenomenon of the new form of the change cannot be eliminated by using the original demux data preset in the display device, so the step determines mura of the display device at different times according to the relation between the mura and the accumulated display time, and prepares corresponding demux data for the mura so as to eliminate the continuously changed mura. Here, the preset demura data is compensation data when the display device leaves the factory, and is used for eliminating the initial mura of the display device. The cumulative display time here refers to a cumulative on time of the display device (display), for example, the display device is turned on for 1 hour on a day and turned on for 2 hours on the next day, and the cumulative display time of the display device is 3 hours.

In this embodiment, mura refers to a phenomenon that brightness of the display panel is uneven, for example mura may refer to that brightness of a portion of pixels in the display panel is outside a normal brightness threshold, and a difference value between the brightness threshold and the mura is smaller than a first set value; the abnormal display means that the brightness of a part of pixels in the display panel is outside a normal brightness threshold value, and the difference value between the brightness and the brightness threshold value is larger than or equal to a first set value. The first set point herein may be determined empirically by one skilled in the art. The demura data is brightness compensation data for compensating the brightness of a first pixel, which is a pixel having a mura problem, so that the brightness of the first pixel is at a normal brightness threshold.

In some embodiments, the display may include a plurality of sampling units that may sample at intervals of N pixel units in the lateral and longitudinal directions of the display. Exemplary, as shown in FIG. 7, samples may be taken at 8 pixel cell intervals in the lateral and longitudinal directions of the display, and the sampling cells may be Q in FIG. 7 ₁ And Q ₂ Etc. The sampling unit is a pixel unit, and the display illustrated in fig. 7 includes 3840×2160 pixel units, which may be the case in practice Is of other specifications.

In some embodiments, as shown in fig. 8, step S102 may include:

s1021a, determining the first brightness of the first sampling unit in the second accumulated display time according to the first brightness fitting curve.

The first brightness fitting curve is used for indicating the trend of brightness of the first sampling unit along with the change of the second accumulated display time, the first sampling unit is any one of the sampling units, and the second accumulated display time is any accumulated opening time of the display.

Specifically, as shown in fig. 9, the luminance distribution of the display screen differs at different cumulative display times, and fig. 9 shows the luminance distribution of the display screen at cumulative display time T1, cumulative display time T2, and cumulative display time T3, respectively. The brightness distribution of the display screen corresponding to different cumulative display time at a certain gray level can be expressed by the following equation:

Lv＝F(row _i ,col _j ,T，Leveln)。

wherein (row) _i ，col _j ) The method is used for indicating the coordinates of each sampling unit on a display screen, T is the accumulated display time, level is the nth gray level (256 gray levels are all provided if 8 bits are used) of the sampling unit, and Lv is the brightness of the corresponding sampling unit under a certain gray level in the corresponding accumulated display time.

It should be noted that the above equation includes four independent variables of row and column positions, time information and gray levels, and can indicate the brightness of each sampling unit of a certain gray level n in the display screen during the accumulated display time T.

As illustrated in fig. 9, the luminance matrix corresponding to the cumulative display times T1, T2, and T3 may be expressed as: lv1=F (row _i ,col _j ,T1，Leveln)，Lv2＝F(row _i ,col _j ,T2，Leveln)，Lv3＝F(row _i ,col _j ,T3，Leveln)。

If it isThen representThe brightness of the six sampling units at a specific gray level n in the display at the cumulative display time T1 is 1,1.1,0.8,1.5,1.3 and 0.7, respectively. Of course, only the brightness of a part of the sampling units is illustrated here, and in practice more sampling units are included in the display, which are not shown here.

The brightness corresponding to different accumulated display time of each sampling unit under specific gray scale can be determined by the above equation, for example, lv4=f (row _i ,col _j Level 32) may indicate the brightness of each sampling unit at 32 nd gray scale cumulative display time T4, …, lvn =f (row _i ,col _j Tn, level) may indicate the brightness of each sampling cell at the nth grayscale cumulative display time Tn.

In the implementation process, since the display may include a plurality of sampling units, if the brightness of each sampling unit corresponding to different cumulative display time is determined according to the above process, a large amount of processing capacity of the controller is occupied, and the processing speed of the controller for determining the brightness of each sampling unit corresponding to different cumulative display time is reduced. Thus, the trend of the luminance of the individual sampling units over the cumulative display time can be determined here from the mathematical model and the luminance of the sampling units at different cumulative display times. For example, after determining the brightness of the first sampling unit at the cumulative display time T1, T2, …, tn, according to the corresponding mathematical algorithm, the brightness of the first sampling unit at the different cumulative display time may be fitted to a first brightness fitting curve, and the corresponding brightness of the first sampling unit at the different cumulative display time may be determined through the first brightness fitting curve, for example, the brightness of the first sampling unit at the second cumulative display time may be determined.

It should be noted that, the mathematical algorithm used to determine the first luminance fitting curve may be a conventional technical means in the art, and those skilled in the art may determine the first luminance fitting curve according to the conventional technical means, which is not described herein in detail.

S1022a, determining the second brightness of the first pixel unit in the second accumulated display time according to the first brightness and interpolation method.

The first pixel unit is any pixel unit in a first area, and the first area is composed of a plurality of sampling units corresponding to the first brightness. For example, the first region may be the sampling unit Q in fig. 7 ₁ Sampling unit Q ₂ Sampling unit Q ₄₈₂ And sampling unit Q ₄₈₃ Rectangular areas therebetween.

Specifically, the plurality of first luminances herein refers to luminances to which the plurality of sampling units respectively correspond. After determining the first luminance of the first sampling unit at the second cumulative display time in step S1021a, the luminance of the other pixel units in the first area at the second cumulative display time, such as the second luminance of the first pixel unit at the second cumulative display time, may be determined by interpolation. The interpolation method herein may be any of nearest neighbor interpolation, bilinear interpolation, or bicubic interpolation. The first sampling unit may be any sampling unit constituting the first region, such as sampling unit Q ₁ Sampling unit Q ₂ Sampling unit Q ₄₈₂ And sampling unit Q ₄₈₃ 。

In some embodiments, if it is determined according to step S1021a that the first luminances of the first sampling unit 1, the first sampling unit 2, the first sampling unit 3 and the first sampling unit 4 are respectively Lv1, lv2, lv3 and Lv4, as shown in fig. 10, the coordinates of the four first sampling units form a rectangle, L12 is the distance between the first sampling unit 1 and the first sampling unit 2, L13 is the distance between the first sampling unit 1 and the first sampling unit 3, the distance between the first pixel unit located in the rectangle and the side of the first sampling unit 1 and the side of the first sampling unit 2 is L21, and the distance between the first pixel unit and the side of the first sampling unit 1 and the side of the first sampling unit 3 is L31, then the second luminance Lv' of the first pixel unit may be determined by bilinear interpolation method to be:

the above L12, L13, L21 and L31 may be determined by coordinates between the corresponding sampling units, and will not be described herein.

Since the first sampling unit may be a sampling unit corresponding to any coordinate of the first sampling unit 1, the first sampling unit 2, the first sampling unit 3, and the first sampling unit 4, the second brightness of any first pixel unit in the rectangle may be determined by the first sampling unit 1, the first sampling unit 2, the first sampling unit 3, and the first sampling unit 4 according to bilinear interpolation.

Further, after determining the first luminance of the different first sampling units according to step S1021a, the second luminance of all the first pixel units in the display may be determined according to bilinear interpolation.

S1023a, determining a mura area according to the first brightness of the first sampling unit, the second brightness of the first pixel unit and the brightness threshold value.

Specifically, the first brightness of the first sampling unit and the second brightness of the first pixel unit may be determined through steps S1021a-S1022a, and since the first sampling unit and the first pixel unit may be any pixel unit in the display, the first sampling unit and the first pixel unit may constitute all pixel units in the display.

The brightness threshold is used for indicating the normal brightness range of the display, for example, the brightness threshold can be-300-320 nit, and if the first brightness of the first sampling unit and the second brightness of the first pixel unit are within the brightness threshold, the brightness of the corresponding pixel unit is normal; if the first brightness of the first sampling unit and the second brightness of the first pixel unit are outside the brightness threshold, the brightness of the corresponding pixel units is abnormal, and the areas where the first sampling unit and/or the first pixel unit with abnormal brightness are/is located form a mura area.

The luminance threshold values of different regions in the display are different, wherein the luminance threshold value of the central region of the display is the highest, the luminance threshold value of the edge region is the lowest, and the luminance threshold value of the central region has a smooth descending trend when changing to the luminance threshold value of the edge region.

In some embodiments, after step S1023a, it may further include:

s1024a, determining demura data according to the third brightness of the mura area and the brightness threshold.

Wherein the mura area includes a first sampling unit and/or a first pixel unit.

Specifically, after determining the mura areas in steps S1021a-S1023a, the demux data corresponding to the mura areas may be determined according to the third brightness and the brightness threshold of the mura areas, so that the controller compensates the third brightness of the corresponding areas according to the demux data corresponding to the mura areas, and then the third brightness of the mura areas is within the brightness threshold, that is, the mura areas in the display are eliminated.

When the third brightness of the mura area is smaller than the brightness threshold, the corresponding demura data can be larger than 1, and the third brightness of the mura area is improved; when the third brightness of the mura area is greater than the brightness threshold, the corresponding demura data may be less than 1, and the third brightness of the mura area may be reduced. The process of determining the corresponding demux data by the controller according to the third brightness and the brightness threshold of the mura area may refer to the technical means commonly used in the art, and will not be described herein.

In some embodiments, the display device may further include a memory configured to store the compensation coefficient map. Wherein the compensation coefficient mapping table is used for indicating the corresponding relation among the accumulated display time, the mura area and the demux data.

Illustratively, the compensation coefficient map may be as shown in table 1 below:

TABLE 1

Cumulative display time	mura region	demura data
			T1	A first mura region, a second mura region	LUT1，LUT2
T2	Third mura region, fourth mura region	LUT3，LUT4
			T3	Fifth mura region, sixth mura region	LUT5，LUT6
…	…	…

As shown in table 1, the mura area corresponding to the cumulative display time T1 includes a first mura area and a second mura area, wherein the demux data corresponding to the first mura area is LUT1, and the demux data corresponding to the second mura area is LUT2; the mura area corresponding to the accumulated display time T2 comprises a third mura area and a fourth mura area, wherein the demux data corresponding to the third mura area is LUT3, and the demux data corresponding to the fourth mura area is LUT4; the mura area corresponding to the cumulative display time T3 includes a fifth mura area and a sixth mura area, wherein the demux data corresponding to the fifth mura area is LUT5, and the demux data corresponding to the sixth mura area is LUT6. Of course, each mura area shown in table 1 is merely exemplary, and in practice, the display may include more mura areas at different cumulative display times, and the demux data corresponding to these mura areas may be the same or different. The LUT1, LUT2, …, LUT6 is a two-dimensional lookup table, and for example, the lookup tables may include 100×200 coefficients, and the coefficients may indicate compensation coefficients of each pixel unit in the corresponding mura area.

It should be noted that, each mura area (e.g., the first mura area, the second mura area, and the third mura area) in table 1 may be determined by the luminance-combined interpolation method of the sampling unit, and the mura area includes at least one pixel unit. The compensation coefficient map may be determined by the method of steps S1021a to S1024a before shipment, and stored in a memory when the display device is shipped.

In some embodiments, as shown in fig. 11, step S102 may further include:

s1021b, determining demura data of the corresponding mura area from the compensation coefficient mapping table according to the first accumulated display time.

Specifically, when the memory of the display device includes a compensation coefficient mapping table, the controller may query the corresponding mura area and the compensation coefficient corresponding to the mura area from the compensation coefficient mapping table after determining the first cumulative display time.

It should be noted that, the steps S1021a-S1024a and S1021b provide two different methods for determining the demura data, where S1021a-S1024a are the demura data corresponding to the mura area determined in real time by the controller according to the corresponding method flow during the use of the display device. And S1021b is that before the display equipment leaves the factory, the manufacturer determines the mura areas corresponding to different accumulated display time and the demux data corresponding to the mura areas through experimental data, and stores the mura areas and the demux data in a form of a compensation coefficient mapping table into a memory, and in the use process of the display equipment, the corresponding mura areas and the demux data corresponding to the mura areas can be determined from the compensation coefficient mapping table according to the accumulated display time, so that real-time calculation is not needed.

S1021a-S1024a and S1021b provide two methods of determining demura data, the method provided by S1021a-S1024a being more computationally intensive to compensate for the mura region than the method provided by S1021 b; while S1021b improves the calculation speed by eliminating the process of determining the mura area by the controller and the process of corresponding the mura data to the mura area during the use of the display device by the user, the accuracy of the mura area and the mura data determined by the compensation coefficient map is poor because the mura area actually corresponding to the display at different cumulative display times may be different from the mura area determined by the experiment.

S103, adjusting the brightness of the mura area according to the demura data.

Specifically, after determining the mura areas corresponding to different cumulative display times of the display and the demux data corresponding to the mura areas, the brightness of the mura areas can be compensated according to the demux data so that the brightness of the mura areas is within a brightness threshold.

According to the embodiment of the application, through the trend that the brightness of each sampling unit in the display changes along with the accumulated display time, the brightness of all pixel units in the display at different accumulated display times is determined by combining an interpolation method, so that mura areas corresponding to the display at different accumulated display times and demux data corresponding to the mura areas are determined; using these newly determined demura data, elimination of the corresponding mura area in the display can be achieved so that the brightness display of the display is uniform. Because the demura data is dynamically changed, the use of the method for processing the mura can eliminate the dynamically changed mura area and improve the user experience.

In some embodiments, as shown in fig. 12, prior to step S101, the controller is further configured to perform the steps of:

s201, determining a first accumulated display time of the display.

S202, if the first accumulated display time reaches a correction threshold value, a brightness correction request is initiated.

Specifically, the display device provided in this embodiment may correct luminance uniformity of the display multiple times during use, that is, when the first accumulated display time of the display device reaches a corresponding threshold, the controller initiates a luminance correction request to correct luminance of the display. For example, the correction threshold may be one month, six months, one year, three years, or the like, and when the first cumulative display time reaches one month, the controller displays a brightness correction request as shown in fig. 5 on the user interface of the display, and confirms by the user whether to correct the brightness of the display, that is, after step S202, performs step S101 described above; after the brightness correction of the display is completed, if the first accumulated display time reaches six months, the controller may display the brightness correction request as shown in fig. 5 again on the user interface of the display, and perform steps S101 to S103 in a loop.

It should be noted that, the correction threshold may be a limited number, such as one month, six months, one year, or three years, or may be an unlimited number, such as every three months of the cumulative display time of the display, the controller initiates the brightness correction request, and steps S101-S103 are cyclically executed.

In some embodiments, the display device may further include a timer configured to count the accumulated display time.

In some embodiments, when the display device includes a memory, the memory may include two memory partitions, where the preset demura data may be stored in the first memory partition; after the controller determines new demux data through S1021a-S1024a or S1021b, preset demux data may be stored to the second memory partition as standby demux data while storing these determined new demux data to the first memory partition for compensation of the mura area.

In some embodiments, the algorithm for determining the mura area in S1021a-S1024a and the algorithm for determining the demux data according to the third brightness of the mura area may be stored in a processor in the controller; of course, in some embodiments, the processor in the controller may also store the compensation coefficient map described above.

In some embodiments, the mura may further refer to a phenomenon of uneven chromaticity of the display panel, for example, mura may refer to a phenomenon that chromaticity of a portion of pixels in the display panel is outside a normal chromaticity threshold, and a difference from the chromaticity threshold is smaller than a second set value; the abnormal display means that the chromaticity of some pixels in the display panel is outside the normal chromaticity threshold, and the difference between the chromaticity and the chromaticity threshold is greater than or equal to the second set value. The second set point herein may be determined empirically by one skilled in the art. At this time, the demura data may be chroma compensation data for compensating the chroma of the second pixel so that the chroma is located at the normal chroma threshold, where the second pixel is a pixel having a mura problem, and the first pixel and the second pixel may be the same. Of course, demura data can compensate both the luminance and chrominance of the pixel to be within normal thresholds.

In some embodiments, the mura problem of the display further includes non-uniformity of chromaticity of the display, and for chromaticity adjustment of the display, a person skilled in the art can also adjust chromaticity of the display according to the demura data, and the specific process can refer to the prior art or the above-mentioned brightness adjustment process, which is not described herein.

In the embodiment of the application, the display device periodically initiates the brightness correction flow of the display through the controller, solves the demura data under different accumulated display time to compensate the brightness of the mura area under different accumulated display time, can eliminate the mura area with dynamic change, and improves the user experience.

According to the mura processing method described above, an embodiment of the present application provides a display device, including: a display and a controller.

Wherein the display is configured to display a user interface.

The controller is configured to: receiving a brightness correction instruction; the brightness correction instruction is used for indicating to optimize the brightness of the display; determining demux data of a mura area in the display according to the first accumulated display time in response to the brightness correction instruction; the first accumulated display time is used for indicating the accumulated starting time of the display, and the demura data is related to the first accumulated display time; the brightness of the mura area is adjusted according to the demura data.

In some embodiments, the display may include a plurality of sampling units.

In some embodiments, when determining demura data for a mura area in the display based on the first cumulative display time, the controller is further configured to: determining the first brightness of the first sampling unit in the second accumulated display time according to the first brightness fitting curve; the first brightness fitting curve is used for indicating the trend of the brightness of the first sampling unit along with the change of the second accumulated display time, the first sampling unit is any one of the sampling units, and the second accumulated display time is any accumulated opening time of the display; determining a second luminance of the first pixel unit at a second cumulative display time according to the plurality of first luminances and the interpolation method; the first pixel unit is any pixel unit in a first area, and the first area is composed of a plurality of sampling units corresponding to first brightness; the mura area is determined according to the first brightness of the first sampling unit, the second brightness of the first pixel unit, and the brightness threshold.

In some embodiments, after determining the mura region from the first luminance of the first sampling unit, the second luminance of the first pixel unit, and the luminance threshold, the controller is further configured to: determining demura data according to the third brightness and brightness threshold of the mura area; the mura area includes a first sampling unit and/or a first pixel unit.

In some embodiments, the display device further comprises a memory configured to store a compensation coefficient map; the compensation coefficient map is used to indicate the correspondence between the accumulated display time, the mura area, and the demux data.

The controller is further configured to: and determining demura data of the corresponding mura area from the compensation coefficient mapping table according to the first accumulated display time.

In some embodiments, the controller is further configured to: determining a first cumulative display time of the display; and if the first accumulated display time reaches the correction threshold value, initiating a brightness correction request.

In some embodiments, as shown in fig. 13, the display device includes at least a display panel, a system-on-a-chip (SoC), a memory, a processor, and a timer.

The display panel can be the display, and the function of the display is the same as that of the display; the system on chip can be the controller, and the function of the system on chip is the same as that of the controller; the processor herein may also be part of a system on a chip for storing and running the relevant algorithms for determining the mura areas and determining the demura data; the memory is the same as the memory and is also configured into two memory partitions, and the functions of the two memory partitions are the same as the first memory partition and the second memory partition; the timer is configured to count the cumulative display time.

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 plurality of sampling units;

A controller configured to:

determining demux data of a mura area in the display according to a first accumulated display time in response to the brightness correction instruction; the first cumulative display time is used for indicating the cumulative on time of the display, and the demura data is related to the first cumulative display time;

determining the first brightness of the first sampling unit in the second accumulated display time according to the first brightness fitting curve; the first brightness fitting curve is used for indicating the trend of the brightness of the first sampling unit along with the change of the second accumulated display time, the first sampling unit is any one of the sampling units, and the second accumulated display time is any accumulated opening time of the display;

determining a second brightness of the first pixel unit at the second accumulated display time according to the first brightnesses and interpolation methods; the first pixel unit is any pixel unit in a first area, and the first area is formed by a plurality of sampling units corresponding to the first brightness;

Determining the mura area according to the first brightness of the first sampling unit, the second brightness of the first pixel unit and a brightness threshold;

and adjusting the brightness of the mura area according to the demura data.

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

determining the demura data according to a third brightness of the mura area and the brightness threshold; the mura area includes the first sampling unit and/or the first pixel unit.

3. The display device of claim 1, further comprising a memory configured to store a compensation coefficient map; the compensation coefficient mapping table is used for indicating the corresponding relation among the accumulated display time, the mura area and the demura data;

the controller is further configured to:

and determining demura data of the corresponding mura area from the compensation coefficient mapping table according to the first accumulated display time.

4. A display device according to claim 2 or 3, wherein the controller is further configured to:

determining the first cumulative display time of the display;

And if the first accumulated display time reaches a correction threshold value, initiating a brightness correction request.

5. A mura processing method is applied to a display device, wherein the display device comprises a display and a plurality of sampling units; characterized by comprising the following steps:

and adjusting the brightness of the mura area according to the demura data.

6. The mura processing method according to claim 5, wherein after the determining the mura area according to the first luminance of the first sampling unit, the second luminance of the first pixel unit, and the luminance threshold, further comprising:

7. The mura processing method according to claim 5, wherein the display device further comprises a memory configured to store a compensation coefficient map; the compensation coefficient mapping table is used for indicating the corresponding relation among the accumulated display time, the mura area and the demura data; the determining demux data of the mura area in the display according to the first accumulated display time includes:

8. The mura processing method according to claim 6 or 7, wherein before the receiving the luminance correction instruction, further comprising:

determining the first cumulative display time of the display;