CN112185307B

CN112185307B - Display apparatus and display control method

Info

Publication number: CN112185307B
Application number: CN202011088619.4A
Authority: CN
Inventors: 孙学斌
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2020-10-13
Filing date: 2020-10-13
Publication date: 2022-03-01
Anticipated expiration: 2040-10-13
Also published as: CN112185307A

Abstract

The application provides a display apparatus and a display control method. The display device includes: the device comprises a controller, a backlight driving assembly, a backlight assembly and a display screen; wherein the controller is configured to: determining a first control signal corresponding to a backlight assembly according to the brightness information of pixels in the image; the backlight driving assembly is configured to: outputting a first driving signal to the backlight assembly according to a first control signal corresponding to the backlight assembly; the backlight lamp assembly is configured to emit light according to a first driving signal output by the backlight driving assembly; the display screen is configured to: the image is displayed under illumination by backlight emitted by the backlight assembly. The embodiment of the application improves the energy efficiency of the equipment, improves the color contrast of the display image and improves the display effect.

Description

Display apparatus and display control method

Technical Field

The present application relates to the field of display technologies, and in particular, to a display device and a display control method.

Background

At present, display products become an indispensable part of people's life, and people have higher and higher requirements for the display quality of display products, so that an RGB (red, green and blue) three-color backlight source technology is introduced, and the RGB three-color backlight source technology has the advantages of high color purity, good color reducibility, high brightness conversion efficiency and the like.

In the related art, when the brightness of the three-color backlight television is adjusted, the gray-scale value of each pixel in the displayed image is generally adjusted to adjust the display brightness, and since the adjusted gray-scale value needs to be calculated for the gray-scale value of each pixel, the calculation amount is large.

Disclosure of Invention

The application provides a display device and a display control method to improve energy efficiency and display effect of the display device.

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

the device comprises a controller, a backlight driving assembly, a backlight assembly and a display screen;

wherein the controller is configured to: determining a first control signal corresponding to the backlight lamp assembly according to the brightness information of pixels in the image;

the backlight driving assembly is configured to: outputting a first driving signal to the backlight lamp assembly according to a first control signal corresponding to the backlight lamp assembly;

the backlight lamp assembly is configured to emit light according to a first driving signal output by the backlight driving assembly;

the display screen is configured to: the image is displayed under illumination by backlight emitted by the backlight assembly.

In the scheme, a controller determines a first control signal corresponding to a backlight assembly according to brightness information of pixels in an image; the backlight driving assembly outputs a first driving signal to the backlight assembly according to a first control signal corresponding to the backlight assembly; the brightness of the light emitted by the backlight lamp assembly is controlled by the first driving signal output by the backlight driving assembly, namely the brightness of the light emitted by the backlight lamp assembly is determined by the brightness information of the pixels in the image to be displayed, namely the brightness of the light emitted by the backlight lamp assembly is controlled according to the brightness requirement of the pixels in the displayed image, and then the image is displayed under the irradiation of the backlight emitted by the backlight lamp assembly through the display screen, so that the energy efficiency of the display device is improved, the color contrast of the displayed image is improved, and the display effect is improved.

In one possible implementation, the backlight assembly includes: a backlight array of a plurality of colors, the controller configured to:

determining a first control signal corresponding to each backlight array of each color in the backlight assembly according to brightness information corresponding to each color of pixels in an image;

the backlight driving assembly is specifically configured to: and respectively outputting the first driving signals corresponding to the backlight arrays of the colors according to the first control signals corresponding to the backlight arrays of the colors in the backlight lamp assembly.

In the scheme, a controller determines a first control signal corresponding to each backlight assembly of each color according to brightness information corresponding to each color of a pixel in an image; the backlight driving assembly respectively outputs a first driving signal to the backlight assembly of each color according to the first control signal corresponding to the backlight assembly of each color; the brightness of the light emitted by the backlight lamp assemblies with different colors is controlled by the first driving signal output by the backlight driving assembly, namely the brightness of the light emitted by the backlight lamp assemblies with different colors is determined by the brightness information corresponding to each color of the pixel in the image to be displayed, namely the brightness of the light emitted by the backlight lamp assemblies with different colors is controlled according to the brightness requirement of each color of the pixel in the displayed image, and then the image is displayed under the irradiation of the backlight emitted by the backlight lamp assemblies through the display screen, so that the energy efficiency of the display device is improved, the color contrast of the displayed image is improved, and the display effect is improved.

In one possible implementation, the luminance information includes: a maximum brightness value, the controller being configured to:

and determining a first control signal corresponding to each backlight array of each color according to the maximum brightness value corresponding to each color of the pixels in the image.

In one possible implementation, the controller is configured to:

determining the target brightness of light rays emitted by the backlight lamp array of each color according to the maximum brightness value corresponding to each color of the pixels in the image;

and determining a first control signal corresponding to each backlight array of each color according to the target brightness of the light emitted by each backlight array of each color.

In the above implementation manner, the controller determines, according to a maximum brightness value corresponding to each color of a pixel in an image, a first control signal corresponding to each backlight array of each color; the backlight driving assembly respectively outputs the corresponding first driving signals to the backlight arrays of the colors according to the corresponding first control signals of the backlight arrays of the colors; the brightness of the light rays emitted by the backlight arrays with different colors is controlled by the first driving signal output by the backlight driving assembly, namely, the brightness of the light rays emitted by the backlight arrays with different colors is determined by the maximum brightness value corresponding to each color of the pixel in the image to be displayed, namely, the brightness of the light rays emitted by the backlight arrays with different colors is controlled according to the brightness requirement of each color of the pixel in the displayed image, and then the image is displayed under the irradiation of the backlight emitted by the backlight driving assembly through the display screen, so that the energy efficiency of the display device is improved, the color contrast of the displayed image is improved, and the display effect is improved.

In one possible implementation, the controller is further configured to:

correcting the brightness of each color of pixels in the image according to the target brightness of the light emitted by the backlight array of each color to obtain a corrected image;

and outputting the corrected image to a display screen.

In the scheme, in order to improve the display effect, before the image is output, the brightness of each color of the pixels in the image is respectively corrected according to the target brightness of the light emitted by the backlight array of each color, so that the display effect is improved.

In one possible implementation, the display device further includes:

a backlight detection assembly disposed between the display screen and the controller, the backlight detection assembly configured to: detecting actual brightness corresponding to each color in backlight of the display screen;

the controller is specifically configured to:

and determining a first control signal corresponding to each backlight array of each color according to the brightness information corresponding to each color of the pixels in the image and the actual brightness corresponding to each color in the backlight of the display screen.

In the scheme, the backlight detection assembly is used for detecting the brightness information corresponding to each color in the backlight of the display screen, namely, the first control signals corresponding to each backlight array determined by the controller are fed back and adjusted according to the brightness information in the actual backlight, so that the brightness control is more accurate, and the energy efficiency is higher.

In one possible implementation, the display device further includes:

a light attenuating component disposed between the display screen and the backlight detection component, the light attenuating component configured to: and attenuating the backlight of the display screen, and outputting the attenuated backlight to the backlight detection component.

In one possible implementation, the plurality of colors includes: red R, green G and blue B.

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

the display device comprises a first color sensor, a controller, a backlight driving assembly, a backlight lamp assembly and a display screen;

the first color sensor is configured to: detecting brightness information of ambient light of an environment where the display device is located;

the controller is configured to:

determining a second control signal corresponding to the backlight lamp assembly according to the brightness information of the ambient light;

the backlight driving assembly is configured to: outputting a second driving signal to the backlight lamp assembly according to a second control signal corresponding to the backlight lamp assembly;

the backlight lamp assembly is configured to emit light according to a second driving signal output by the backlight driving assembly;

the display screen is configured to: an image is displayed under illumination by a backlight emitted by the backlight assembly.

In the scheme, the brightness information of the ambient light of the environment where the display equipment is located is detected, so that the brightness of the light rays emitted by the backlight lamp assembly of the display equipment is adjusted according to the brightness information of the ambient light, and the display equipment and the environment can be better fused together.

In one possible implementation, the backlight assembly includes: a backlight array of a plurality of colors, the first color sensor configured to:

detecting brightness information of each color in ambient light of an environment where the display device is located;

the control appliance is configured to:

determining second control signals corresponding to the backlight arrays of the colors according to the brightness information of the colors in the environment light;

the backlight driving assembly is configured to: and respectively outputting the corresponding second driving signals to the backlight arrays of the colors according to the corresponding second control signals of the backlight arrays of the colors.

In the scheme, the brightness information of each color in the environment light of the environment where the display equipment is located is detected, so that the brightness of the light rays emitted by the backlight array of each color of the display equipment is adjusted according to the brightness information of each color in the environment light, and the display equipment and the environment can be better fused together.

In one possible implementation, the display device further includes:

a second color sensor disposed between the display screen and the controller, the second color sensor configured to detect actual brightness of each of the colors in backlight of the display screen and feed back the actual brightness of each of the colors in the backlight to the controller;

the control appliance is configured to:

and determining a second control signal corresponding to each backlight array of each color according to the brightness information of each color in the ambient light and the actual brightness of each color in the backlight.

In the scheme, the brightness information corresponding to each color in the backlight of the display screen is detected through the second color sensor, namely, the second control signal corresponding to the backlight assembly determined by the controller is fed back and adjusted according to the brightness information in the actual backlight, so that the brightness control is more accurate, and the display equipment and the environment can be better fused together.

In one possible implementation, the controller is configured to:

and determining second control signals corresponding to the backlight arrays of the colors according to the brightness information of the colors in the ambient light, the actual brightness of the colors in the backlight and the color correction coefficients of the colors of the display screen.

In the scheme, the controller performs feedback adjustment on a second control signal corresponding to the backlight assembly determined by the controller according to the brightness information in the actual backlight and the color correction coefficient of each color of the display screen, so that the brightness control is more accurate, and the display equipment and the environment can be better fused together.

In one possible implementation, the display device further includes:

a light attenuating component disposed between the display screen and the second color sensor, the light attenuating component configured to: and attenuating the backlight of the display screen, and outputting the attenuated backlight to the second color sensor.

In a third aspect, the present application provides a display control method, including:

determining a first control signal corresponding to the backlight lamp assembly according to the brightness information of pixels in the image;

outputting a corresponding first driving signal to the backlight lamp assembly according to a first control signal corresponding to the backlight lamp assembly;

and controlling the backlight lamp assembly to emit light according to the first driving signal output by the backlight driving assembly, and displaying the image.

In a fourth aspect, the present application provides a display control method, including:

detecting brightness information of ambient light of an environment where the display device is located;

outputting a second driving signal to the backlight lamp assembly according to a second control signal corresponding to the backlight lamp assembly;

and controlling the backlight lamp assembly to emit light according to a second driving signal output by the backlight driving assembly, and displaying an image.

According to the technical scheme, the display device and the display control method are provided, wherein a controller determines a first control signal corresponding to a backlight assembly according to brightness information of pixels in an image; the backlight driving assembly outputs a first driving signal to the backlight assembly according to a first control signal corresponding to the backlight assembly; the brightness of the light emitted by the backlight lamp assembly is controlled by the first driving signal output by the backlight driving assembly, namely the brightness of the light emitted by the backlight lamp assembly is determined by the brightness information of the pixels in the image to be displayed, namely the brightness of the light emitted by the backlight lamp assembly is controlled according to the brightness requirement of the pixels in the displayed image, and then the image is displayed under the irradiation of the backlight emitted by the backlight lamp assembly through the display screen, so that the energy efficiency of the display device is improved, the color contrast of the displayed image is improved, and the display effect is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is an application scenario diagram of a display device according to some embodiments of the present application;

fig. 2 is a block diagram of a hardware configuration of the control device 100 in fig. 1 according to some embodiments of the present disclosure;

fig. 3 is a schematic diagram of a three-color backlight principle provided in an embodiment of the present application;

fig. 4 is a schematic diagram of a spectrum distribution of a backlight provided in an embodiment of the present application;

fig. 5 is a schematic diagram of brightness adjustment according to an embodiment of the present application;

fig. 6 is a schematic diagram of brightness adjustment according to another embodiment of the present application;

FIG. 7 is a schematic structural diagram of an embodiment of a display device provided in the present application;

FIG. 8 is a graph illustrating image brightness of an embodiment of a display device provided herein;

FIG. 9 is a schematic structural diagram of another embodiment of a display device provided herein;

FIG. 10 is a schematic structural diagram of yet another embodiment of a display device provided herein;

FIG. 11 is a schematic structural diagram of another embodiment of a display device provided herein;

FIG. 12 is a schematic structural diagram of yet another embodiment of a display device provided herein;

FIG. 13 is a schematic structural diagram of yet another embodiment of a display device provided herein;

FIG. 14 is a flowchart illustrating an embodiment of a display control method according to the present application;

fig. 15 is a flowchart illustrating a display control method according to an embodiment of the present disclosure.

With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The terms "comprising" and "having," and any variations thereof, in the description and claims of this application and the drawings described herein are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

The term "module," as used in various embodiments of the present application, may refer to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware and/or software code that is capable of performing the functionality associated with that element.

First, a part of vocabulary and application scenarios related to the embodiments of the present application will be described.

The term "remote control" as used in the embodiments of the present application refers to a component of an electronic device (such as the display device disclosed in the present application) that is capable of wirelessly controlling the electronic device, typically over a short distance. The component may typically be 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 USB, bluetooth, motion sensors, etc. For example: the hand-held touch remote controller replaces most of the physical built-in hard keys in the common remote control device with the user interface in the touch screen.

The term "gesture" as used in the embodiments of the present application refers to a user behavior used to express an intended idea, action, purpose, or result through a change in hand shape or an action such as hand movement.

The term "hardware system" used in the embodiments of the present application may refer to a physical component having computing, controlling, storing, inputting and outputting functions, which is formed by a mechanical, optical, electrical and magnetic device such as an Integrated Circuit (IC), a Printed Circuit Board (PCB) and the like. In various embodiments of the present application, a hardware system may also be generally referred to as a motherboard (motherboard) or a host chip or controller.

The embodiment of the application provides a display device, such as a television. It should be noted that the method provided in this embodiment is not only applicable to televisions, but also applicable to other display devices, such as computers, tablet computers, and the like.

Referring to fig. 1, an application scenario diagram of a display device according to some embodiments of the present application is provided. As shown in fig. 1, the control apparatus 100 and the display device 200 may communicate with each other in a wired or wireless manner.

Among them, the control apparatus 100 is configured to control the display device 200, which may receive an operation instruction input by a user and convert the operation instruction into an instruction recognizable and responsive by the display device 200, serving as an intermediary for interaction between the user and the display device 200. Such as: the user operates the channel up/down key on the control device 100, and the display device 200 responds to the channel up/down operation.

The control device 100 may be a remote controller 100A, which includes infrared protocol communication or bluetooth protocol communication, and other short-distance communication methods, etc. to control the display apparatus 200 in a wireless or other wired manner. The user may input a user instruction through a key on a remote controller, voice input, control panel input, etc., to control the display apparatus 200. Such as: the user can input a corresponding control command through a volume up/down key, a channel control key, up/down/left/right moving keys, a voice input key, a menu key, a power on/off key, etc. on the remote controller, to implement the function of controlling the display device 200.

The control device 100 may also be an intelligent device, such as a mobile terminal 100B, a tablet computer, a notebook computer, and the like. For example, the display device 200 is controlled using an application program running on the smart device. The application program may provide various controls to a user through an intuitive User Interface (UI) on a screen associated with the smart device through configuration.

For example, the mobile terminal 100B may install a software application with the display device 200 to implement connection communication through a network communication protocol for the purpose of one-to-one control operation and data communication. Such as: the mobile terminal 100B may be caused to establish a control instruction protocol with the display device 200, and the functions of the physical keys as arranged by the remote control 100A may be implemented by operating various function keys or virtual controls of the user interface provided on the mobile terminal 100B. The audio and video content displayed on the mobile terminal 100B may also be transmitted to the display device 200, so as to implement a synchronous display function.

The display apparatus 200 may provide a network television function of a broadcast receiving function and a computer support function. The display device may be implemented as a digital television, a web television, an Internet Protocol Television (IPTV), or the like.

The display device 200 may be a liquid crystal display, an organic light emitting display, a projection device. The specific display device type, size, resolution, etc. are not limited.

The display apparatus 200 also performs data communication with the server 300 through various communication means. Here, the display apparatus 200 may be allowed to be communicatively connected through a Local Area Network (LAN), a Wireless Local Area Network (WLAN), and other networks. The server 300 may provide various contents and interactions to the display apparatus 200. By way of example, the display device 200 may send and receive information such as: receiving Electronic Program Guide (EPG) data, receiving software program updates, or accessing a remotely stored digital media library. The servers 300 may be a group or groups of servers, and may be one or more types of servers. Other web service contents such as a video on demand and an advertisement service are provided through the server 300.

Fig. 2 is a block diagram illustrating the configuration of the control device 100. As shown in fig. 2, the control device 100 includes a controller 110, a memory 120, a communicator 130, a user input interface 140, a user output interface 150, and a power supply 160.

The controller 110 includes a Random Access Memory (RAM)111, a Read Only Memory (ROM)112, a processor 113, a communication interface, and a communication bus. The controller 110 is used to control the operation of the control device 100, as well as the internal components of the communication cooperation, external and internal data processing functions.

Illustratively, when an interaction of a user pressing a key disposed on the remote controller 100A or an interaction of touching a touch panel disposed on the remote controller 100A is detected, the controller 110 may control to generate a signal corresponding to the detected interaction and transmit the signal to the display device 200.

And a memory 120 for storing various operation programs, data and applications for driving and controlling the control apparatus 100 under the control of the controller 110. The memory 120 may store various control signal commands input by a user.

The communicator 130 enables communication of control signals and data signals with the display apparatus 200 under the control of the controller 110. Such as: the control apparatus 100 transmits a control signal (e.g., a touch signal or a control signal) to the display device 200 via the communicator 130, and the control apparatus 100 may receive the signal transmitted by the display device 200 via the communicator 130. The communicator 130 may include an infrared signal interface 131 and a radio frequency signal interface 132. For example: when the infrared signal interface is used, the user input instruction needs to be converted into an infrared control signal according to an infrared control protocol, and the infrared control signal is sent to the display device 200 through the infrared sending module. The following steps are repeated: when the rf signal interface is used, a user input command needs to be converted into a digital signal, and then the digital signal is modulated according to the rf control signal modulation protocol and then transmitted to the display device 200 through the rf transmitting terminal.

The user input interface 140 may include at least one of a microphone 141, a touch pad 142, a sensor 143, a key 144, and the like, so that a user can input a user instruction regarding controlling the display apparatus 200 to the control apparatus 100 through voice, touch, gesture, press, and the like.

The user output interface 150 outputs a user instruction received by the user input interface 140 to the display apparatus 200, or outputs an image or voice signal received by the display apparatus 200. Here, the user output interface 150 may include an LED interface 151, a vibration interface 152 generating vibration, a sound output interface 153 outputting sound, a display 154 outputting images, and the like. For example, the remote controller 100A may receive an output signal such as audio, video, or data from the user output interface 150 and display the output signal in the form of an image on the display 154, an audio on the sound output interface 153, or a vibration on the vibration interface 152.

And a power supply 160 for providing operation power support for each element of the control device 100 under the control of the controller 110. In the form of a battery and associated control circuitry.

In some embodiments, the display device uses an RGB three-color backlight source, as shown in fig. 3, the backlight source includes three color backlight arrays, the driving of the backlight output to the display device is divided into three RGB LED lamp separate driving, and the three color LED lamp arrays are respectively driven, and the three color LED lamp arrays together form the backlight array of the display device. The three-color LED lamp driving has the advantages of high color purity, good color reducibility, high effective light transmittance and high light conversion efficiency relative to white light driving.

In fig. 4, the left side is the spectral distribution of the conventional white backlight, the right side is the spectral distribution of the three-color backlight LED lamp, the abscissa in fig. 4 represents the wavelength, and the ordinate represents the relative emission intensity, the left side curve is the spectral distribution curve corresponding to the white light, and the right side is the spectral distribution curve of the backlight with three colors of blue B, green G, and red R. It can be seen that the traditional white light has a wide spectrum distribution, a high blue component and a low red and green component, and a large amount of energy is distributed in the spectrum range which is not needed by the LCD TV. And the effective spectrum displayed is not concentrated, so that the color is impure, and the color reduction effect is influenced.

The three-color LED backlight spectrum is concentrated around the primary color spectrum effective for liquid crystal display, and the brightness conversion efficiency is high; and the concentration of spectral energy can be ensured by selecting a proper monochromatic LED lamp, the color purity is high, and the color reducibility is good.

In the related art, when brightness is adjusted for a three-color backlight television, gray-scale values of pixels in a displayed image are generally adjusted to achieve adjustment of display brightness, but in the scheme, since the adjusted gray-scale values of the pixels need to be calculated, data calculation amount is huge, implementation is complex, and since the gray-scale values of the pixels in the image are adjusted, that is, the brightness contrast of the image is adjusted, the color contrast of the image is not adjusted, the color contrast of the displayed image is poor, and the effect is not good.

For a white or three-color backlight television, it is conceivable to adopt a scheme of changing the brightness of the backlight as a whole when adjusting the brightness, as shown in fig. 5, the abscissa represents the wavelength, the ordinate represents the relative emission intensity, the left side curve is a spectrum distribution curve corresponding to white light, and the right side curve is a spectrum distribution curve of three-color backlights of blue B, green G and red R. The left side is a backlight scheme of a monochromatic white lamp, if the brightness needs to be improved, the white light driving current is increased, the backlight brightness is integrally increased, the right side is a three-color backlight scheme, if the brightness needs to be improved, the driving current is proportionally increased by the three lamps, and the backlight brightness is integrally increased.

The adjustment has the advantages that the display content of the liquid crystal pixel does not need to be adjusted, the white balance consistency under different brightness can be ensured, but the brightness of the display equipment is adjusted by the overall change of the brightness of the backlight lamp, and the energy consumption is larger.

In order to further reduce energy consumption, in the embodiment of the present application, brightness control may be performed separately for each color of backlight, as shown in fig. 6, for example, when the display device detects that the maximum brightness requirement of the blue component and the red component of the display content is reduced and the maximum brightness requirement of the green component is increased, backlight brightness adjustment is performed to lower the blue component and the red component and increase the green component, so that an energy saving effect may be achieved.

The technical solution of the present application will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

Fig. 7 is a schematic structural diagram of an embodiment of a display device provided in the present application. As shown in fig. 7, the display device provided in the present embodiment includes:

a controller configured to: determining a first control signal corresponding to a backlight assembly according to the brightness information of pixels in the image;

a backlight driving assembly configured to: outputting a first driving signal to the backlight assembly according to a first control signal corresponding to the backlight assembly;

and a backlight assembly configured to emit light according to the first driving signal output from the backlight driving assembly.

Further, the method can also comprise the following steps: a display screen configured to: an image is displayed under irradiation of a backlight emitted from the backlight assembly.

Specifically, the controller analyzes the brightness information of the pixels in the acquired image, analyzes the brightness information corresponding to all the pixels in the image, and outputs the image to the display screen for display. As shown in fig. 8, the luminance information of a pixel can be represented as Ymn, m × n pixels exist in an image, the luminance information is represented by a Y component in YUV, and the Y component represents the brightness of the pixel.

A first control signal corresponding to the backlight assembly is determined according to the brightness information of the pixels in the image. The first control signal may be, for example, a Pulse Width Modulation (PWM) control signal, and different backlight luminances emitted by the backlight assembly correspond to different first control signals, for example, different duty ratios. For example, if the brightness information is small, the brightness of the light emitted from the backlight assembly needs to be reduced, for example, the duty ratio of the original control signal is reduced to obtain the first control signal.

The backlight driving assembly outputs a first driving signal to the backlight assembly according to the first control signal corresponding to the backlight assembly, and drives the backlight assembly.

For example, the first driving signal output by the backlight driving assembly is a driving current, and the magnitude of the driving current is controlled by the first control signal, so as to control the brightness of the light emitted by the backlight assembly. For example, the greater the drive current, the greater the brightness of the light emitted by the backlight assembly.

In the display device of the embodiment, the controller determines a first control signal corresponding to the backlight assembly according to the brightness information of the pixels in the image; the backlight driving assembly outputs a first driving signal to the backlight assembly according to a first control signal corresponding to the backlight assembly; the brightness of the light emitted by the backlight lamp assembly is controlled by the first driving signal output by the backlight driving assembly, namely the brightness of the light emitted by the backlight lamp assembly is determined by the brightness information of the pixels in the image to be displayed, namely the brightness of the light emitted by the backlight lamp assembly is controlled according to the brightness requirement of the pixels in the displayed image, and then the image is displayed under the irradiation of the backlight emitted by the backlight lamp assembly through the display screen, so that the energy efficiency of the display device is improved, the color contrast of the displayed image is improved, and the display effect is improved.

In one embodiment, as shown in fig. 9, the display apparatus includes: a controller, a backlight driving assembly, a backlight array of multiple colors (in fig. 9, the backlight array of three colors is taken as an example), a display screen;

wherein the controller is configured to: determining a first control signal corresponding to each backlight array of each color according to brightness information corresponding to each color of pixels in an image;

the backlight driving assembly is configured to: according to the first control signals corresponding to the backlight arrays of the colors, the corresponding first driving signals are respectively output to the backlight arrays of the colors;

for any color of backlight array, the backlight array is configured to: emitting light according to a first driving signal corresponding to the backlight group array output by the backlight driving component;

the display screen is configured to: an image is displayed under irradiation of backlight light emitted from the backlight array of each color.

In some embodiments, the multi-color backlight array may be red R, green G, and blue B backlight lamp assemblies.

In some embodiments, the multi-color backlight array may be a red R, green G, blue B, violet multi-color backlight array.

Specifically, the controller analyzes the brightness of the color of each pixel in the acquired image, analyzes the brightness information corresponding to each color of all pixels in the image, and outputs the image to the display screen for display. The luminance information includes: the luminance information of the respective colors of each pixel, such as the luminance information of the red R color of each pixel, the luminance information of the green G color of each pixel, and the luminance information of the blue B color of each pixel, the luminance information component of the respective colors in each pixel may be converted into the corresponding Y component in fig. 8.

And determining a first control signal corresponding to each backlight array of each color according to the brightness information corresponding to each color. The first control signals for different color backlight arrays may be the same or different. The first control signal may be, for example, a pulse width modulation PWM control signal, and different backlight intensities emitted by the backlight array correspond to different first control signals, for example, different duty ratios. For example, if the brightness information is small, the brightness of the light emitted from the backlight array needs to be reduced, for example, the duty ratio of the original control signal is reduced to obtain the first control signal.

The backlight driving assembly outputs the first driving signals corresponding to each color to the backlight array assembly according to the first control signals corresponding to each color of the backlight array assembly, and drives the backlight array of each color through the first driving signals corresponding to each color.

For example, the first driving signal output by the backlight driving assembly is a driving current, the magnitude of the driving current is controlled by the first control signal, and the brightness of the light emitted by the backlight array is controlled by the magnitude of the driving current.

The backlight arrays of all colors emit light according to the first driving signals respectively corresponding to the output of the backlight driving assembly, the emitted light rays form backlight of the display screen after being mixed, and images are displayed by illuminating the liquid crystal panel of the display screen through the backlight.

The display screen displays the image under illumination of backlight from a backlight array of multiple colors.

The controller can be a controller chip with image processing capability, such as an SOC, an FPGA, or a DSP.

As can be seen from the foregoing technical solutions, in the display device provided in the embodiment of the present application, the controller determines, according to the luminance information corresponding to each color of the pixel in the image, the first control signal corresponding to each backlight array of each color; the backlight driving assembly respectively outputs the corresponding first driving signals to the backlight arrays of the colors according to the corresponding first control signals of the backlight arrays of the colors; the brightness of the light rays emitted by the backlight arrays with different colors is controlled by the first driving signals which are respectively corresponding and output by the backlight driving assembly, namely, the brightness of the light rays emitted by the backlight arrays with different colors is determined by the brightness information corresponding to each color of the pixel in the image to be displayed, namely, the brightness of the light rays emitted by the backlight arrays with different colors is controlled according to the brightness requirement of each color of the pixel in the displayed image, and then the image is displayed under the irradiation of the backlight emitted by the backlight arrays with multiple colors through the display screen, so that the energy efficiency of the display equipment is improved, the color contrast of the displayed image is improved, and the display effect is improved.

In one implementation, the luminance information includes: a maximum brightness value, the controller being configured to:

Specifically, the controller acquires luminance information of each color of all pixels included in each frame image, and extracts maximum luminance values of three color components. The maximum luminance value of each color component refers to the maximum luminance value of the color component in all pixels.

The controller determines the target brightness of the light rays emitted by the backlight arrays of all the colors according to the maximum brightness value corresponding to all the colors of all the pixels in the image, and further determines the first control signals corresponding to the backlight arrays of all the colors.

For example, the maximum luminance value for blue in the image is 255, and the maximum luminance value for red and blue is only 127, and the luminance of the red and blue backlights may be reduced based on the original luminance, and the first control signal corresponding to each backlight array of each color may be determined based on the luminance value obtained by reducing the original luminance.

In one implementation, the controller is configured to:

and determining the first control signals corresponding to the backlight lamp group arrays of the colors according to the target brightness of the light emitted by the backlight lamp arrays of the colors.

Specifically, for a backlight array of any color, the target brightness of light emitted by the backlight array of the color is determined according to the maximum brightness value corresponding to the color of a pixel in an image, and the first control signal corresponding to the backlight assembly of the color is determined according to the target brightness of light emitted by the backlight array of the color.

In an embodiment, a correspondence relationship between the target brightness of the light emitted by the backlight array of each color and the first control signal may be preset, and the correspondence relationship may be referred to when determining the first control signal corresponding to the target brightness.

For example, if the maximum brightness value is smaller than the first brightness threshold, the brightness of the light emitted by the backlight array is reduced based on the original brightness, and the target brightness is obtained.

For example, the first luminance threshold value corresponding to each color is 255, and if the maximum luminance value of any one color of each pixel in the image is less than 255, the luminance of the light emitted from the backlight array of the color is reduced to obtain the target luminance.

For example, the relationship between the target brightness and the original brightness is related to the relationship between the maximum brightness value and the first brightness threshold, for example, the ratio of the maximum brightness value to the first brightness value is positively correlated to the ratio of the target brightness to the original brightness.

If the maximum brightness value is larger than the second brightness threshold value, the brightness of the light rays emitted by the backlight array is improved on the basis of the original brightness, and the target brightness is obtained.

For example, pixels in an image need to be displayed with a brightness that exceeds that required for normal display, requiring local instantaneous highlighting by the backlight, such as increasing the brightness of light emitted by the backlight array.

For example, the relationship between the target brightness and the original brightness is related to the relationship between the maximum brightness value and the second brightness threshold, for example, the ratio of the maximum brightness value to the second brightness value is positively related to the ratio of the original brightness to the target brightness.

In the above embodiment, the controller determines the first control signal corresponding to each backlight array of each color according to the maximum brightness value corresponding to each color of the pixel in the image; the backlight driving assembly respectively outputs the corresponding first driving signals to the backlight arrays of the colors according to the corresponding first control signals of the backlight arrays of the colors; the brightness of the light rays emitted by the backlight arrays with different colors is controlled by the first driving signal output by the backlight driving assembly, namely, the brightness of the light rays emitted by the backlight arrays with different colors is determined by the maximum brightness value corresponding to each color of the pixel in the image to be displayed, namely, the brightness of the light rays emitted by the backlight arrays with different colors is controlled according to the brightness requirement of each color of the pixel in the displayed image, and then the image is displayed under the irradiation of the backlight emitted by the backlight driving assembly through the display screen, so that the energy efficiency of the display device is improved, the color contrast of the displayed image is improved, and the display effect is improved.

In one implementation, as shown in fig. 10, the display device further includes:

a backlight detection assembly disposed between the display screen and the controller, configured to: detecting actual brightness corresponding to each color in backlight of the display screen;

the controller is specifically configured to:

Specifically, the backlight detection assembly obtains brightness information corresponding to each color in the backlight of the display screen and feeds the brightness information back to the controller.

The controller determines a final first control signal according to the brightness information corresponding to each color of the pixel in the image and the brightness information corresponding to each color in the actual backlight detected by the backlight detection assembly, namely, the controller performs feedback adjustment according to the brightness information in the actual backlight, so that the brightness control is more accurate and the energy efficiency is higher.

In some embodiments, the backlight assembly of fig. 10 includes an array of R lamps, an array of G lamps, and an array of B lamps.

In some embodiments, as shown in fig. 10, the display apparatus may further include:

The light attenuation component can be made of a white semi-transparent material which has no color loss and only attenuates brightness, and is used for simulating the attenuation of a backlight membrane and liquid crystal to light and avoiding the effect of the backlight detection component from being influenced by over-strong light.

In the above embodiment, the backlight detection assembly detects the luminance information corresponding to each color in the backlight of the display screen, that is, the first control signal corresponding to each backlight array determined by the controller is fed back and adjusted according to the luminance information in the actual backlight, so that the luminance control is more accurate and the energy efficiency is higher.

In one implementation, the controller is further configured to:

respectively correcting the brightness of each color of pixels in the image according to the target brightness of the light emitted by the backlight array of each color to obtain a corrected image;

and outputting the corrected image to a display screen.

In some embodiments, the brightness of each color of the pixels in the image may be respectively corrected according to the target brightness of the light emitted by the backlight assembly of each color and the brightness correction coefficient of each color of the display screen, so as to obtain a corrected image.

The brightness correction coefficient is determined according to a first corresponding relation and/or a second corresponding relation, wherein the first corresponding relation is a corresponding relation between a first control signal corresponding to each backlight array of each color and the brightness of each color in the backlight of the display screen; the second corresponding relation is the corresponding relation between the target brightness of the light emitted by the backlight array of each color and the actual brightness corresponding to each color in the backlight of the display screen.

Specifically, in order to make the display effect of the image unchanged after the brightness adjustment, the controller corrects the brightness of each color of the pixels in the image according to the target brightness of the light emitted by the backlight array of each color and the brightness correction coefficient of each color of the display screen, so as to obtain the corrected image.

For example, if the target brightness of the light emitted by the backlight array is reduced, the brightness of the color for each pixel in the image is increased; the brightness of the object from which the backlight array emits light increases, and the brightness of that color for each pixel in the image decreases.

For example, the luminance correction coefficient is obtained by a ratio of the actual luminance of each color in the backlight to the magnitude of the driving current corresponding to the first control signal, and the target luminance of the light emitted from the backlight array of each color is corrected according to the luminance correction coefficient, that is, the luminance of each color of the pixel in the image is compensated. For example, the ratio of the actual brightness of each color in the backlight to the target brightness of the light emitted by the backlight array of each color is used to obtain the brightness correction coefficient, and the target brightness of the light emitted by the backlight lamp assembly of each color is corrected according to the brightness correction coefficient, so that the compensation of the brightness of each color of the pixel in the image is realized.

The basic principle of RGB compensation is that the color composition ratio is not changed when an image is displayed by a liquid crystal display panel.

The backlight optical model shown in fig. 10 refers to a correspondence relationship of the output of the backlight control to the actual backlight, i.e., a first correspondence relationship, and may be obtained as follows:

when the display equipment is in a power-on state, the backlight control module is adjusted to output different control signals, the liquid crystal display panel displays a white screen, the instrument is used for monitoring the brightness of light rays emitted by the display screen, and the brightness is recorded into a table or a corresponding relation, namely the backlight optical model.

For the case obtained according to the second correspondence, the luminance correction coefficients may be different in attenuation of the tested light with different colors after passing through the backlight and the panel, for example: when the backlight is pure blue and has the maximum brightness, the blue brightness actually passing through the panel and the blue brightness after backlight light mixing are measured by an instrument, and the ratio of the two is the brightness attenuation of the liquid crystal panel and the optical structures thereof such as a polarizer and the like. By testing the attenuation of the three lights (blue, green, and red) as above, the brightness attenuation of the liquid crystal panel and its optical structures such as polarizer can be obtained.

On the basis of the above embodiments, as shown in fig. 10, in some embodiments, the controller may include: the image color analysis module is used for analyzing the color of each pixel in the acquired image to analyze the brightness information corresponding to each color of all the pixels in the image;

in an embodiment, the image color analysis module is further configured to extract maximum luminance values of the three color components.

In some embodiments, the controller may further comprise: and the RGB component extraction module is used for receiving the output of the image color analysis module, respectively extracting the RGB color components in the pixels and preparing for subsequent color compensation.

In some embodiments, the controller may further comprise: and the RGB compensation module is used for correcting the brightness of each color of the pixel in the image to obtain a corrected image and outputting the corrected image to a display screen.

In the above-described embodiment, by changing the luminance information corresponding to the color of the image displayed on the liquid crystal display panel and the luminance of the color of the matching backlight to display the image, the device energy efficiency is improved and the display effect is improved.

In an embodiment, the scheme can also be used in a display device with local dimming adjusted by local backlight, so that the effect of area accurate light control is achieved.

For example, for any display area in a display screen, acquiring an image portion corresponding to the display area, acquiring brightness information corresponding to colors of pixels in the image portion, determining control signals corresponding to backlight arrays of the colors, and determining driving signals corresponding to the backlight arrays of the colors according to the control signals corresponding to the backlight arrays of the colors; it is also necessary to determine which backlight lamps in the backlight array correspond to the display region, and then to output driving signals for driving the backlight lamps, and the backlight driving assembly outputs different driving signals for the backlight lamps in different regions.

In some embodiments, the color crosstalk problem caused by adjusting the backlight brightness of different colors respectively can be avoided by compensating the image data displayed by the display screen.

Illustratively, taking the video stream as a 3 × 8bit format, the maximum brightness value of RGB in the image is (127,127,255):

for example, when the maximum luminance value of blue in the image in the video stream is 255 and the maximum luminance value of red and blue is lower and only 127, the maximum luminance value of blue in the image displayed on the lcd panel is 2 times the maximum luminance value of red and green (255+1)/(127+1) ═ 2), and the backlight luminance distribution is simplified to (0.5,0.5, 1);

the image color analysis module analyzes and obtains the brightness information of each color and outputs the color distribution to the backlight control module, and the backlight control module adjusts the control signal to ensure that the brightness of the backlight output B is kept unchanged and the brightness of the RG is halved; the backlight driving assembly drives the RGB lamp array according to the control signal.

The RGB component extraction module extracts the brightness information of the RGB components of the pixels of the whole frame image and stores the brightness information into an internal memory; the color compensation module compensates the RGB pixels of the image according to the output of the backlight control module, namely, the RG brightness value of the pixel is doubled to be (1,1,1) according to the first corresponding relation, and (a, b, c) is obtained by utilizing the brightness correction coefficient (a, b, c) obtained according to the second corresponding relation in a compensation mode, and the compensated image is output to a display screen for displaying.

Since the RG brightness is halved in the backlight brightness, and the correction coefficients (a, b, c) are used to correct the scale change caused on the optical path to ensure that the final output effect is displayed in the target color scale, which is offset by the correction coefficients (a/a, b/b, c/c) on the liquid crystal display panel.

The luminance (1,1,1) of the image pixel is multiplied by the backlight luminance (0.5,0.5,1) to obtain (0.5,0.5,1), so that the display effect finally viewed by the user is (0.5,0.5,1) in the final display effect.

In some scenes, the television can be used as a mural in a non-use state, but the television is often poor in adaptability to the environment due to the self-luminous characteristic when being used as the mural. For example, in the morning and evening, the ambient light is warm, the color of the television is not adjusted along with the ambient light, and the television cannot be completely fused with the environment due to the state of the cold color. Therefore, in this embodiment, by detecting the luminance information of the ambient light of the environment where the display device is located, the luminance of the light emitted by the backlight assembly of the display device is adjusted according to the luminance information of the ambient light, so that the display device and the environment can be better integrated. The scheme in the embodiment of the application directly adjusts the brightness of the backlight to adjust the final display effect under the condition that the content of the display picture is not changed.

Fig. 11 is a schematic structural diagram of another embodiment of a display device provided by the present application. As shown in fig. 11, the display device provided in the present embodiment includes:

a first color sensor configured to: detecting brightness information of ambient light of an environment where the display device is located;

a controller configured to:

determining a second control signal corresponding to the backlight assembly according to the brightness information of the ambient light;

a backlight driving assembly configured to: outputting a second driving signal to the backlight assembly according to a second control signal corresponding to the backlight assembly;

a backlight assembly configured to: emitting light according to a second driving signal output by the backlight driving component;

the display screen is configured to: an image is displayed under irradiation of a backlight emitted from the backlight assembly.

Specifically, the observed brightness of the object is recognized after the light reflected by the object enters human eyes, so that the ambient light irradiated on the object itself affects the composition of the light reflected by the object.

The controller determines a target brightness of light emitted by the backlight assembly according to the acquired brightness information of the ambient light of the first color sensor, thereby determining a second control signal corresponding to the backlight assembly. The second control signal may be, for example, a pulse width modulation PWM control signal, different backlight intensities emitted by the backlight assembly, corresponding to different second control signals, for example, corresponding to different duty ratios. For example, if the brightness information of the ambient light is small, the brightness of the light emitted from the backlight assembly needs to be reduced, for example, the duty ratio of the original control signal is reduced to obtain the second control signal.

The backlight driving assembly outputs a second driving signal to the backlight assembly according to a second control signal corresponding to the backlight assembly to drive the backlight assembly;

the backlight lamp assemblies of the colors emit light according to the second driving signals output by the backlight driving assembly and respectively corresponding to the second driving signals.

For example, the second driving signal output by the backlight driving assembly is a driving current, and the magnitude of the driving current is controlled by the second control signal, so as to control the brightness of the light emitted by the backlight assembly. For example, the greater the drive current, the greater the brightness of the light emitted by the backlight assembly.

In one embodiment, as shown in fig. 12, a display device includes: a controller, a backlight driving assembly, a backlight assembly of a plurality of colors (illustrated in fig. 12 by including a red R backlight array, a green G backlight array, and a blue B backlight array), a display screen, and a first color sensor;

the first color sensor is configured to: detecting brightness information of each color in ambient light of an environment where the display device is located;

the controller is configured to:

determining a second control signal corresponding to each backlight array of each color according to the brightness information of each color in the ambient light;

the backlight driving assembly is configured to: according to the second control signal corresponding to each backlight array of each color, respectively outputting a second driving signal corresponding to each backlight array of each color;

for any color of backlight array, the backlight array is configured to emit light according to a second driving signal output by the backlight driving component and corresponding to the backlight array;

Specifically, the observed object color is recognized after the light reflected by the object enters human eyes, so that the color composition of the ambient light itself irradiated on the object affects the light composition reflected by the object, and therefore, in this embodiment, the luminance information of each color in the ambient light of the environment where the display device is located, such as the luminance information of R, G, B colors, is detected by the first color sensor and is used as the reference for backlight adjustment.

The controller (such as a backlight control module) determines the target brightness of the light emitted by the backlight array of each color according to the brightness information of each color in the ambient light acquired by the first color sensor, so as to determine the second control signal corresponding to each backlight array of each color. The second control signals for different color backlight arrays may be the same or different. The second control signal may be, for example, a pulse width modulation PWM control signal, and different backlight intensities emitted by the backlight array correspond to different second control signals, for example, different duty ratios. For example, if the luminance information of a certain color in the ambient light is small, the luminance of the light emitted from the backlight array of the color needs to be reduced, for example, the duty ratio of the original control signal is reduced to obtain the second control signal.

The backlight driving assembly outputs the second driving signals corresponding to the backlight arrays of the colors respectively according to the second control signals corresponding to the backlight arrays of the colors respectively, and the second driving signals can be the same or different for the backlight arrays of different colors.

The backlight arrays of the colors emit light according to the second driving signals output by the backlight driving assembly.

For example, the second driving signal output by the backlight driving assembly is a driving current, and the brightness of the light emitted by the backlight array is controlled by the magnitude of the driving current.

In some embodiments, the first color sensor is an RGB sensor.

In the above embodiment, by detecting the brightness information of each color in the ambient light of the environment where the display device is located, the brightness of the light emitted by the backlight array of each color of the display device is adjusted according to the brightness information of each color in the ambient light, so that the display device and the environment can be better integrated.

In one implementation, as shown in fig. 13, the display device further includes:

a second color sensor disposed between the display screen and the controller, the second color sensor configured to: detecting the actual brightness of each color in the backlight of the display screen, and feeding back the actual brightness of each color in the backlight to the controller;

the control appliance is configured to:

Specifically, the second color sensor is configured to obtain brightness information of each color in the actual backlight of the display screen, and feed back the brightness information to the controller.

The controller dynamically adjusts the control signals of the backlight driving assemblies corresponding to the backlight arrays with different colors in real time according to the data of the two color sensors, so that the display effect and the environment can be better fused together.

In one implementation, the method further comprises: a light attenuating component disposed between the display screen and the second color sensor, the light attenuating component configured to: and attenuating the backlight of the display screen, and outputting the attenuated backlight to the second color sensor.

The light attenuation element principle is described in the foregoing embodiments and will not be described herein.

In the above embodiment, the second color sensor detects the brightness information corresponding to each color in the backlight of the display screen, that is, the second control signal corresponding to the backlight assembly determined by the controller is fed back and adjusted according to the brightness information in the actual backlight, so that the brightness control is more accurate, and the display device and the environment can be better integrated together.

In one implementation, a controller is configured to:

and determining a second control signal corresponding to the backlight assembly of each color according to the brightness information of each color in the ambient light, the actual brightness of each color in the backlight and the color correction coefficient of each color of the display screen.

In an embodiment, the color correction coefficient is obtained according to a first corresponding relationship, which is a corresponding relationship between the second control signal corresponding to each backlight array of each color and the actual brightness of each color in the backlight of the display screen, and is similar to the foregoing embodiment.

Specifically, in order to cancel out the color ratio change caused in the optical path, when determining the second control signal corresponding to each of the backlight arrays of each color, it is necessary to consider the color correction coefficient of each color of the display panel in addition to the luminance information of each color in the ambient light and the luminance information of each color in the actual backlight of the display panel.

In the above embodiment, the second color sensor detects the luminance information corresponding to each color in the backlight of the display screen, and the controller performs feedback adjustment on the second control signal corresponding to the backlight assembly determined by the controller according to the luminance information in the actual backlight and the color correction coefficient of each color of the display screen, so that the luminance control is more accurate, and the display device and the environment can be better integrated together.

Illustratively, the brightness of each color detected by the first color sensor (3 × 8bit) of the ambient light is (200,180,180).

The controller reads the value of the first color sensor, confirms the corresponding color correction coefficient (a, b, c) according to the backlight optical model, determines the target brightness (200/a, 180/b, 180/c) of the backlight control, outputs a control signal to the backlight driving assembly, and the backlight driving assembly respectively carries out the driving current setting of the RGB three-color lamp array according to the control signal and drives the three-color backlight to emit light.

The second color sensor acquires brightness information (R, G, B) of each color in the backlight attenuated by the light attenuating assembly and feeds back the brightness information to the controller.

The controller is used for controlling the backlight according to the proportional relation between the actual brightness of each color in the backlight acquired by the second color sensor and the target brightness of the backlight control

The proportional relation is a transfer function of the backlight driving component; re-according to transfer function

And target luminance (200/a, 180/b, 180/c), adjusting the driving capability of the backlight drive, i.e., the driving capability of the backlight driver

Multiplying by (200/a, 180/b, 180/c) to obtain the target brightness of the current backlight control

And so on until convergence, e.g. target brightness

Corresponding to the brightness (200,180,180) of each color in the ambient light.

Fig. 14 is a schematic flowchart of an embodiment of a display control method provided in the present application, and as shown in fig. 14, the display control method of the present embodiment includes:

step 101, determining a first control signal corresponding to a backlight assembly according to brightness information of pixels in an image;

102, outputting a corresponding first driving signal to the backlight assembly according to a first control signal corresponding to the backlight assembly;

and 103, controlling the backlight assembly to emit light according to the first driving signal output by the backlight driving assembly, and displaying an image.

The method of this embodiment may be executed by any display device in the foregoing display device embodiments, and the implementation principle and technical effect of the technical solution of this method embodiment are similar to those in the foregoing embodiments, and are not described herein again.

Fig. 15 is a schematic flowchart of another embodiment of the display control method provided in the present application, and as shown in fig. 15, the display control method of the present embodiment includes:

step 201, detecting brightness information of ambient light of an environment where display equipment is located;

step 202, determining a second control signal corresponding to the backlight assembly according to the brightness information of the ambient light;

step 203, outputting a second driving signal to the backlight assembly according to a second control signal corresponding to the backlight assembly;

and step 204, controlling the backlight assembly to emit light according to the second driving signal output by the backlight driving assembly, and displaying an image.

The embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a controller to implement the method corresponding to the foregoing method embodiment, and for a specific implementation process of the computer program, reference may be made to the foregoing method embodiment, which implements similar principles and technical effects, and details are not described herein again.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A display device, comprising:

the display screen is configured to: displaying the image under illumination by a backlight emitted by the backlight assembly;

the backlight assembly includes a backlight array of a plurality of colors, the controller is configured to: determining a first control signal corresponding to each backlight array of each color in the backlight assembly according to brightness information corresponding to each color of pixels in an image;

2. The apparatus of claim 1, wherein the brightness information comprises: a maximum brightness value, the controller being configured to:

3. The apparatus of claim 2, wherein the control appliance is configured to:

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

and outputting the corrected image to a display screen.

5. The apparatus of any of claims 1-4, further comprising:

the controller is specifically configured to:

6. The apparatus of claim 5, further comprising:

7. The apparatus of any of claims 1-4, wherein the plurality of colors comprises: red R, green G and blue B.

8. A display device, comprising:

the controller is configured to:

the display screen is configured to: displaying an image under illumination of a backlight emitted by the backlight assembly;

the backlight assembly includes a backlight array of a plurality of colors, the first color sensor configured to: detecting brightness information of each color in ambient light of an environment where the display device is located;

the control appliance is configured to: determining second control signals corresponding to the backlight arrays of the colors according to the brightness information of the colors in the environment light;

9. The apparatus of claim 8, further comprising:

the control appliance is configured to:

10. The apparatus of claim 9, wherein the control appliance is configured to:

11. The apparatus of claim 9 or 10, further comprising:

12. A display control method applied to the display device according to any one of claims 1 to 7, the method comprising:

controlling the backlight lamp assembly to emit light according to a first driving signal output by the backlight driving assembly, and displaying the image;

the determining a first control signal corresponding to the backlight assembly according to the brightness information of the pixels in the image includes: determining a first control signal corresponding to each backlight array of each color in the backlight assembly according to brightness information corresponding to each color of pixels in an image;

the outputting a corresponding first driving signal to the backlight lamp assembly according to the corresponding first control signal of the backlight lamp assembly includes: and respectively outputting the first driving signals corresponding to the backlight arrays of the colors according to the first control signals corresponding to the backlight arrays of the colors in the backlight lamp assembly.

13. A display control method applied to the display device according to any one of claims 8 to 11, the method comprising:

controlling the backlight lamp assembly to emit light according to a second driving signal output by the backlight driving assembly, and displaying an image;

the detecting brightness information of ambient light of an environment where the display device is located includes: detecting brightness information of each color in ambient light of an environment where the display device is located;

the determining a second control signal corresponding to the backlight assembly according to the brightness information of the ambient light includes: determining second control signals corresponding to the backlight arrays of the colors according to the brightness information of the colors in the environment light;

the outputting a second driving signal to the backlight lamp assembly according to a second control signal corresponding to the backlight lamp assembly includes: and respectively outputting the corresponding second driving signals to the backlight arrays of the colors according to the corresponding second control signals of the backlight arrays of the colors.