Display apparatus, method, storage medium, and program product

Abstract

The embodiment of the invention belongs to the technical field of display, and provides a display device and method, a storage medium and a program product, the display device comprises a display screen, an image processor, a backlight module, a plurality of backlight driving units and a controller, the backlight module comprises backlight sources of various different colors, and the controller is connected with the display screen. Each backlight driving unit corresponds to a backlight source of one color, and the controller is configured to receive a synchronizing signal sent by the image processor and image data of a next frame of picture; the synchronizing signal is used for indicating the controller to display the next frame of picture; determining M main colors of the sub-picture of the next frame of picture according to the synchronization signal; the backlight source corresponding to the main color is a backlight source needing to be lightened when the sub-picture is displayed; and controlling a backlight driving unit to perform backlight control according to the image data and the main color. The main color of the sub-picture is identified through the synchronizing signal, the backlight driving unit does not process backlight data of a non-sub-picture in subsequent processing, and the data volume processed by the backlight driving unit is greatly reduced, so that the backlight delay is reduced, the color separation phenomenon is inhibited, and the user experience is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of display technology, and more specifically, to a display device, method, storage medium, and program product. Background Art

[0002] Color field sequential display technology is a display technology that can significantly improve the display effect of liquid crystal display devices and reduce the power consumption of liquid crystal display devices.

[0003] In a liquid crystal display device using color field sequential display, backlights of different colors are displayed independently. Therefore, it is necessary to independently drive and control the backlights of different colors.

[0004] However, independent drive control of backlights of different colors requires a large amount of data to be processed by the backlight processor, resulting in high backlight delay and easy occurrence of color separation. Summary of the Invention

[0005] The exemplary embodiments of the present application provide a display device, method, storage medium, and program product, which can reduce backlight delay and thus better suppress color separation.

[0006] In a first aspect, the present application provides a display device, comprising: a display screen, an image processor, a backlight module, a plurality of backlight driving units, and a controller, wherein the backlight module comprises a plurality of backlight sources of different colors, each backlight driving unit corresponding to a backlight source of a different color, and the controller is configured to:

[0007] receiving a synchronization signal and image data of a next frame sent by the image processor; the synchronization signal is used to instruct the controller to perform display processing of the next frame;

[0008] Determining M primary colors of a sub-picture of the next frame according to the synchronization signal; the next frame includes N sub-pictures; the sub-pictures include multiple colors, and backlight sources corresponding to the primary colors are backlight sources that need to be illuminated when displaying the sub-pictures; M is an integer greater than or equal to 0, and N is an integer greater than or equal to 2;

[0009] The backlight driving unit is controlled to perform backlight control according to the image data and the main color.

[0010] In some embodiments, the controller is configured to:

[0011] The main color of the sub-picture is determined according to the duration of the synchronization signal.

[0012] In some embodiments, the synchronization signal includes multiple sub-synchronization signals, and the sub-synchronization signals correspond one-to-one to the colors included in the sub-picture. The controller is configured to:

[0013] For any sub-picture, if the duration of the high level of the sub-synchronization signal corresponding to any color in the sub-picture is greater than or equal to the preset duration, the color is determined to be the main color.

[0014] In some embodiments, the preset duration is pre-configured, or the preset duration is carried in the image data; different sub-synchronization signals correspond to the same or different preset durations.

[0015] In some embodiments, the controller is configured to:

[0016] Acquiring backlight data corresponding to the image data;

[0017] Determining backlight data corresponding to a non-primary color in the backlight data;

[0018] The backlight data and a target instruction are sent to the backlight driving unit, where the target instruction is used to instruct the backlight driving unit not to process the backlight data corresponding to the non-primary color.

[0019] In some embodiments, the controller is configured to:

[0020] When the duration of the high level of the synchronization signal is greater than or equal to a preset duration, determining a backlight lighting strategy according to the duration class to which the duration of the synchronization signal belongs; the backlight lighting strategy is used to adjust the brightness level corresponding to the image data and / or the color temperature corresponding to the image data;

[0021] According to the backlight lighting strategy, the backlight driving unit is controlled to perform backlight control.

[0022] In some embodiments, the controller is configured to:

[0023] The brightness data and / or color ratio data in the image data are adjusted according to the backlight lighting strategy.

[0024] In a second aspect, the present application provides a display method, wherein a display device includes: a display screen, an image processor, a backlight module, a plurality of backlight driving units, and a controller, wherein the backlight module includes a plurality of backlight sources of different colors, and each backlight driving unit corresponds to a backlight source of a different color. The method is applied to the controller, and the method includes:

[0025] receiving a synchronization signal and image data of a next frame sent by the image processor; the synchronization signal is used to instruct the controller to perform display processing of the next frame;

[0026] Determining M primary colors of a sub-picture of the next frame according to the synchronization signal; the next frame includes N sub-pictures; the sub-pictures include multiple colors, and backlight sources corresponding to the primary colors are backlight sources that need to be illuminated when displaying the sub-pictures; M is an integer greater than or equal to 0, and N is an integer greater than or equal to 2;

[0027] The backlight driving unit is controlled to perform backlight control according to the image data and the main color.

[0028] In a third aspect, the present application provides a display device, comprising: a display screen, an image processor, a backlight module, a plurality of backlight drive units, and a controller, wherein the backlight module comprises a plurality of backlight sources of different colors, each backlight drive unit corresponding to a backlight source of a different color, and the device is applied to the controller, and the device comprises:

[0029] A receiving module, configured to receive a synchronization signal and image data of a next frame sent by the image processor; the synchronization signal is used to instruct the controller to perform display processing of the next frame;

[0030] a processing module, configured to determine, based on the synchronization signal, M primary colors of a sub-picture of the next frame; the next frame including N sub-pictures; the sub-pictures including multiple colors, and backlight sources corresponding to the primary colors being backlight sources that need to be illuminated when displaying the sub-pictures; M being an integer greater than or equal to 0, and N being an integer greater than or equal to 2;

[0031] A control module is used to control the backlight driving unit to perform backlight control according to the image data and the main color.

[0032] In a fourth aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, they are used to implement the method described in the second aspect.

[0033] In a fifth aspect, the present application provides a computer program product, comprising a computer program, which implements the method described in the second aspect when executed by a processor.

[0034] The display device, method, storage medium and program product provided by the embodiments of the present application, the display device includes: a display screen, an image processor, a backlight module, multiple backlight driving units, and a controller, the backlight module includes backlight sources of multiple different colors, each backlight driving unit corresponds to a backlight source of one color, the controller is configured to: receive a synchronization signal sent by the image processor and image data of the next frame; the synchronization signal is used to instruct the controller to perform display processing of the next frame; determine M main colors of the sub-picture of the next frame according to the synchronization signal; the next frame includes N sub-pictures; the sub-picture includes multiple colors, and the backlight sources corresponding to the main colors are the backlight sources that need to be turned on when displaying the sub-pictures; M is an integer greater than or equal to 0, and N is an integer greater than or equal to 2; and control the backlight driving unit to perform backlight control according to the image data and the main colors. By identifying the main color of the sub-picture through the synchronization signal, the backlight driving unit does not need to process the backlight data of non-sub-pictures in subsequent processing, which greatly reduces the amount of data processed by the backlight driving unit, thereby reducing backlight delay, suppressing the occurrence of color separation, and improving user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the implementation methods in the embodiments of the present application or related technologies, the following is a brief introduction to the drawings required for use in the embodiments or related technology descriptions. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0036] Figure 1 This is a schematic diagram of the principle of field sequential display;

[0037] Figure 2 A schematic structural diagram of a display device provided in an embodiment of the present application;

[0038] Figure 3 A schematic diagram of a backlight drive control provided in an embodiment of the present application;

[0039] Figure 4 A schematic diagram of the principle of field sequential display provided in an embodiment of the present application;

[0040] Figure 5 A schematic diagram of a display method provided in an embodiment of the present application Figure 1 ;

[0041] Figure 6 A schematic diagram of a synchronization signal provided in an embodiment of the present application Figure 1 ;

[0042] Figure 7A schematic diagram of a synchronization signal provided in an embodiment of the present application Figure 2 ;

[0043] Figure 8 A schematic diagram of a display method provided in an embodiment of the present application Figure 2 ;

[0044] Figure 9 A schematic structural diagram of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0045] In order to make the purpose, implementation mode and advantages of the present application clearer, the exemplary implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0046] It should be noted that the brief descriptions of terms in this application are only for the purpose of facilitating the understanding of the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their ordinary and usual meanings.

[0047] In addition, the terms "comprises" and "comprising" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to those components expressly listed but may include other components not expressly listed or inherent to such product or device.

[0048] It should be noted that in the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "exemplary" or "for example" should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0049] Color field sequential display (hereinafter referred to as field sequential display) is one of the methods for display devices to achieve color display. Its principle is: in field sequential display, a frame of image to be displayed is split into multiple monochrome color component images according to color, and a frame display time is divided into Figure 1 A corresponding plurality of sub-field sequences, the color component images are displayed in the corresponding sub-field sequence, and the plurality of color component images are quickly switched within the display time of one frame, and the color superposition in time is realized by utilizing the persistence of vision effect of the human eye, thereby realizing color display.

[0050] The color component map can be split according to the color system used by the field sequential display device, for example Figure 1As shown, for a field sequential display device using the three primary colors of red (R), green (G), and blue (B), in the field sequential display stage, a frame of image to be displayed is split into a red component image, a green component image, and a blue component image. Figure 3 Color component diagram. Accordingly, the backlight module of a field sequential display device uses a backlight source that can emit red, green, and blue backlight, and the backlight sources of different colors can be controlled independently. During field sequential display, the backlight module turns on the red backlight in the red field sequence, turns on the green backlight in the green field sequence, and turns on the blue backlight in the blue field sequence.

[0051] Because field sequential displays use the principle of temporal color mixing to achieve color display, there's no need to set up sub-pixels corresponding to the colors (such as R, G, and B sub-pixels) in the pixel units. Therefore, compared to display devices that use the principle of spatial color mixing to achieve color display, the resolution of field sequential displays can be increased several times. Furthermore, by using backlights of different colors to achieve colorization of pixel units, there's no need for a color filter layer, thus avoiding the significant color resistance of the color filter layer to the backlight. Therefore, field sequential displays offer significant advantages such as high resolution, high transmittance, lower cost, and a simpler, thinner structure.

[0052] However, independent driving and control of backlights of different colors requires the backlight processor to process the backlight data of different colors separately and control the backlight light source to turn on or off in the corresponding field sequence. The amount of data processed by the backlight processor is large. If the performance of the backlight processor is insufficient, it is easy to cause high backlight delay and color separation.

[0053] In view of the above-mentioned problems existing in the prior art, the present application provides a display device, method, storage medium and program product, which can reduce the amount of data processed by the backlight processor, thereby reducing the backlight delay, suppressing the occurrence of color separation phenomenon, and improving the user experience.

[0054] Among them, the display device provided in the embodiment of the present application can have various implementation forms, for example, it can be a television, a smart TV, a laser projection device, a monitor, an electronic bulletin board, an electronic table, etc., and the embodiment of the present application does not limit this.

[0055] The following is an introduction to the hardware configuration of the display devices mentioned above.

[0056] Figure 2 This is a possible hardware configuration diagram of a display device provided in this application. Figure 2As shown, in some embodiments, the display device 200 can include at least one of a tuner and demodulator 210, a communicator 220, a detector 230, an external device interface 240, a controller 250, a display 260, an audio output interface 270, a power supply 280, a memory 290, and a user interface 2100.

[0057] In some embodiments, the controller includes a processor, a video processor, an audio processor, a graphic processor, a RAM, a ROM, a first interface to an n-th interface for input / output.

[0058] The display 260 includes a display screen component for presenting a picture, and a driving component for driving the image display, a component for receiving an image signal originated from the controller output, and a component for displaying video content, image content, and a menu operation interface, and a user operation UI interface.

[0059] The display 260 can be a liquid crystal display, an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (AMOLED), a flex light-emitting diode (FLED), a Miniled, a MicroLed, a Micro-OLED, a quantum dot light emitting diodes (QLED), and a projection display, etc., and can also be a projection device and a projection screen.

[0060] The communicator 220 is a component for communicating with an external device or a server according to various communication protocol types. For example, the communicator can include at least one of a Wifi module, a Bluetooth module, a wired Ethernet module, other network communication protocol chips or near field communication protocol chips, and an infrared receiver. The display device 200 can establish transmission and reception of control signals and data signals with the external control device 100 or the server 400 through the communicator 220.

[0061] The user interface 2100 can be used to receive a control signal of the control device 100 (e.g., an infrared remote controller, etc.).

[0062] Detector 230 is used to collect signals from the external environment or external interactions. For example, detector 230 includes a light receiver, a sensor for collecting ambient light intensity; or detector 230 includes an image collector, such as a camera, for collecting external environmental scenes, user attributes, or user interaction gestures; or detector 230 includes a sound collector, such as a microphone, for receiving external sounds.

[0063] The external device interface 240 may include, but is not limited to, any one or more of the following: a high-definition multimedia interface (HDMI), an analog or digital high-definition component input interface (component), a composite video input interface (CVBS), a USB input interface (USB), an RGB port, etc. It may also be a composite input / output interface formed by multiple of the above interfaces.

[0064] The tuner-demodulator 210 receives broadcast television signals via a wired or wireless reception method, and demodulates audio and video signals, such as EPG data signals, from a plurality of wireless or wired broadcast television signals.

[0065] In some embodiments, the controller 250 and the tuner 210 may be located in different separate devices, that is, the tuner 210 may also be located in an external device of the main device where the controller 250 is located, such as an external set-top box.

[0066] Controller 250 controls the operation of the display device and responds to user operations through various software control programs stored in memory 290. Controller 250 controls the overall operation of display device 200. For example, in response to receiving a user command to select a UI object for display on display 260, controller 250 may perform operations related to the object selected by the user command.

[0067] In some embodiments, the controller includes at least one of a central processing unit (CPU), a video processor, an audio processor, a graphics processing unit (GPU), RAM Random Access Memory (RAM), ROM (Read-Only Memory, ROM), a first interface to an nth interface for input / output, a communication bus (Bus), etc.

[0068] The user may input a user command through a graphical user interface (GUI) displayed on the display 260, and the user input interface receives the user input command through the graphical user interface (GUI). Alternatively, the user may input a user command through a specific voice or gesture, and the user input interface may recognize the voice or gesture through a sensor to receive the user input command.

[0069] A user interface is the medium for interaction and information exchange between an application or operating system and the user. It converts information between its internal form and a user-friendly format. A common user interface is the graphical user interface (GUI), which refers to a graphical user interface related to computer operations. It can be an icon, window, control, or other interface element displayed on an electronic device's display. Controls can include visual interface elements such as icons, buttons, menus, tabs, text boxes, dialog boxes, status bars, navigation bars, and widgets.

[0070] The backlight driving control principle of the above-mentioned display device is described below.

[0071] Figure 3 A schematic diagram of a backlight driving control principle provided in an embodiment of the present application is shown as follows: Figure 3 As shown, the image processor can send a synchronization signal to the controller to instruct the controller to process the image data of the next frame, as well as the switching timing of different colors in the next frame of image data, wherein the synchronization signal can be a Vsync signal, the controller can be a microcontroller (Microcontroller Unit, MCU), and the image processor can be a processor integrated in the display device motherboard.

[0072] After receiving the image data of the next frame, the controller can split the image data of the next frame according to different colors, and generate backlight data based on the synchronization signal and the split image data. The backlight data is used to indicate the lighting time and light intensity of the corresponding backlight source. The controller can send the backlight data to the corresponding backlight drive unit, for example, sending the red backlight data to the red backlight drive unit and the green backlight data to the green backlight drive unit.

[0073] After receiving the backlight data sent by the controller, the backlight driver unit can process and respond to the backlight data, determine the lighting time and intensity of the corresponding backlight source, and control the corresponding color light source in the backlight module to emit the corresponding brightness backlight color when displaying the corresponding color component image. For example, the red backlight driver unit can identify and process the received red backlight data, determine the time to light up and turn off the red backlight source, and the intensity of the lit red backlight source, and control the red backlight source to light up and turn off at the corresponding time.

[0074] In some embodiments, the backlight driving unit can control the backlight source through pulse width modulation (PWM), that is, the synchronization frequency of the backlight source depends on the frequency of the synchronization signal. To improve the control accuracy of the backlight, the image processor can use a field sequential display driving algorithm to process the synchronization signal. Figure 4 As shown, for a field sequential display device using the three primary colors of red (R), green (G), and blue (B), in the field sequential display stage, one frame display time is divided into three sub-field sequences (three sub-pictures), and one frame of image to be displayed is split into a red component image, a green component image, and a blue component image. Figure 3 There are three color component images, and each subfield sequence corresponds to three color component images. Correspondingly, each subfield sequence corresponds to three color synchronization signals.

[0075] When the backlight driver receives backlight data from the controller, it needs to identify and process the backlight data from multiple subfield sequences to determine which subfield sequence needs to illuminate the backlight source. For example, in the first frame, the red backlight driver identifies and processes the backlight data from three subfield sequences and determines that only the red backlight source should be illuminated in the first subfield sequence, and does not need to be illuminated in the subsequent two subfield sequences. The above processing method further increases the amount of data processed by the backlight driver unit, which may further increase the backlight delay.

[0076] The following detailed description of the technical solution of the present application is provided in conjunction with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0077] Figure 5 A flow chart of a display method provided in an embodiment of the present application is applied to a display device, the display device including: a display screen, an image processor, a backlight module, a plurality of backlight driving units, and a controller. The backlight module includes a plurality of backlight sources of different colors, each backlight driving unit corresponds to a backlight source of a color. The embodiment of the present application is mainly executed by the controller, such as Figure 5 As shown, the method includes the following steps:

[0078] S501. Receive a synchronization signal and image data of a next frame sent by the image processor; the synchronization signal is used to instruct the controller to perform display processing of the next frame.

[0079] In some embodiments, the image processor may first send a synchronization signal to the controller to instruct the controller to display the next frame of the picture. After the controller receives the synchronization signal, the image processor may send image data of the next frame of the picture to the controller.

[0080] In some embodiments, the image processor may also send a synchronization signal and the image data of the next frame to the controller simultaneously. Alternatively, the image processor may first send the image data of the next frame to the controller, and then send the synchronization signal. When the controller receives the image data of the next frame first, it may first cache the image data of the next frame, and then read the next frame for processing after receiving the synchronization signal.

[0081] S502: Determine M main colors of the sub-picture of the next frame according to the synchronization signal.

[0082] Among them, the next frame includes N sub-pictures; the sub-pictures include multiple colors, and the backlight source corresponding to the main color is the backlight source that needs to be lit when displaying the sub-pictures; M is an integer greater than or equal to 0, and N is an integer greater than or equal to 2.

[0083] In some embodiments, after receiving the synchronization signal, the controller can identify the synchronization signal. For example, a display device using RGB is used. Figure 4 As shown, within a frame, a frame can be divided into three sub-frames, with each sub-frame corresponding to one pulse cycle. The synchronization signal corresponding to each sub-frame includes sub-synchronization signals corresponding to the three colors of RGB. The controller can identify the sub-synchronization signal in each sub-frame and determine the primary color in each sub-frame. For example, if the primary color in sub-frame 1 is determined to be red based on the sub-synchronization signal, the red backlight source needs to be illuminated when sub-frame 1 is displayed.

[0084] In some embodiments, the image processor may divide a frame into two sub-frames, or four sub-frames, etc. within the time of one frame. The embodiment of the present application does not limit the number of sub-frames.

[0085] In some embodiments, the controller can determine the primary color of the sub-picture according to the duration of the synchronization signal. For example, for any sub-picture, the controller can determine the primary color of the sub-picture according to the duration of the sub-synchronization signal corresponding to each of the three colors RGB.

[0086] In a possible implementation, if the duration of the high level of the sub-synchronization signal corresponding to any color in the sub-picture is greater than or equal to a preset duration, the color is determined to be the main color.

[0087] For example, Figure 6 As shown, the controller identifies the duration of the high level of each sub-synchronization signal in sub-picture 1, and determines whether the color corresponding to each sub-synchronization signal is the main color based on the relationship between the duration of the high level of each sub-synchronization signal and the preset duration. Figure 6In the sub-screen 1 shown, the duration of the high level of the red sub-synchronization signal is greater than the preset duration, and the duration of the high level of the sub-synchronization signals corresponding to green and blue is less than the preset duration. Then the main color of the sub-screen 1 is red. When displaying the sub-screen 1, the red backlight source needs to be turned on.

[0088] Optionally, in each sub-image, there may be no main color, or there may be multiple main colors. Figure 6 In the illustrated sub-screen 1, if the duration of the high level of the sub-synchronization signals corresponding to red and green is greater than the preset duration, the primary colors of sub-screen 1 are red and green. If the duration of the high level of the sub-synchronization signals corresponding to red, green, and blue is less than the preset duration, then sub-screen 1 does not have a primary color.

[0089] In a possible implementation, if the duration of the low level of the sub-synchronization signal corresponding to any color in the sub-picture is less than a preset duration, the color is determined to be the main color. Figure 6 As shown, the controller identifies the duration of the low level of each sub-synchronization signal in sub-screen 1 and determines whether the color corresponding to each sub-synchronization signal is the main color based on the relationship between the duration of the low level of each sub-synchronization signal and the preset duration. Within one pulse cycle, the duration of the low level is the difference between the duration of the pulse cycle and the duration of the high level.

[0090] In some embodiments, the preset time length may be predefined in the controller, and the size of the preset time length may be determined based on prior knowledge. For example, the preset time length may be 50 microseconds.

[0091] In some embodiments, the preset durations corresponding to sub-synchronization signals of different colors may be the same or different. For example, the preset durations corresponding to sub-synchronization signals of different colors may all be 50 microseconds. Alternatively, the preset duration corresponding to a red sub-synchronization signal may be 50 microseconds, the preset duration corresponding to a green sub-synchronization signal may be 40 microseconds, and the preset duration corresponding to a blue sub-synchronization signal may be 60 microseconds. This embodiment of the present application is not limited to this.

[0092] In some embodiments, the preset duration may also be sent by the image processor to the controller, for example, the preset duration may be carried in the image data, or the preset duration may be carried in information newly defined by the image processor and transmitted to the controller. This embodiment of the present application is not limited to this.

[0093] In some embodiments, for image data at different times, or for each frame of image data at the same time, the preset duration may be the same or different. The image processor may determine the corresponding preset duration based on the external environment and / or the performance of the display device. For example, the image processor may collect the current ambient brightness based on an external sensor and generate a preset duration based on the ambient brightness. For example, the higher the ambient brightness, the longer the preset duration may be. The image processor may obtain the performance of the internal components of the display device and generate a preset duration based on the performance of the components. For example, the better the performance of the components, the longer the preset duration may be.

[0094] In some embodiments, the controller may also determine the primary color of the sub-picture according to the magnitude of the synchronization signal. For example, for any sub-picture, the controller may determine the primary color of the sub-picture according to the magnitude of the sub-synchronization signal corresponding to each of the three colors RGB.

[0095] For example, Figure 7 As shown, the controller can identify the size of the high level of each sub-synchronization signal in the sub-picture 1, and determine whether the color corresponding to each sub-synchronization signal is the main color according to the relationship between the size of the high level of each sub-synchronization signal and the preset duration. Figure 6 In the illustrated sub-picture 1, the high levels of the red and blue sub-sync signals are greater than the preset durations, and the primary colors of sub-picture 1 are red and blue. It should be understood that the magnitude of the preset duration corresponding to the magnitude of the high level is similar to the magnitude and source of the duration of the high level, and will not be further elaborated here.

[0096] S503: Control the backlight driving unit to perform backlight control according to the image data and the main color.

[0097] In the embodiment of the present application, after receiving the image data of the next frame, the controller can split the image data into sub-data corresponding to different colors, and after determining the main color of each sub-image, it can determine the image data of non-main colors in the corresponding sub-data. For example, Figure 6 In the red image data shown, sub-picture 2 and sub-picture 3 are image data of non-primary colors.

[0098] The controller can fuse the sub-data and sub-synchronization signals corresponding to different colors to generate backlight data for the next frame of the image in different colors, and send the backlight data for the different colors to the corresponding backlight processing unit. For example, the controller generates red backlight data based on the red image data and the red synchronization signal. This red backlight data includes backlight data for three sub-images, where sub-images 2 and 3 are backlight data for non-primary colors. It should be understood that the backlight data can be based on the image data and has the backlight switching timing added.

[0099] The controller may send the generated backlight data to the corresponding backlight driving unit, for example, sending the red backlight data to the red backlight driving unit, sending the green backlight data to the green backlight driving unit, and so on.

[0100] In some embodiments, when the controller sends the generated backlight data to the corresponding backlight driving unit, it can also generate a target instruction for instructing the backlight driving unit not to process the backlight data corresponding to the non-primary color. For example, the target instruction can carry the identifier of the sub-picture.

[0101] Please continue to refer to Figure 6 For the red backlight data, sub-picture 2 and sub-picture 3 are backlight data of non-main colors. When the controller sends the red backlight data to the red backlight drive unit, it also sends a target instruction, which can carry the identifiers of sub-picture 2 and sub-picture 3. When the red backlight drive unit processes the red backlight data, it can ignore the backlight data corresponding to sub-picture 2 and sub-picture 3 and only process the backlight data corresponding to sub-picture 1. This greatly reduces the amount of data processed by the red backlight drive unit. Accordingly, the red backlight drive unit does not process the backlight data corresponding to sub-picture 2 and sub-picture 3. When displaying sub-picture 2 and sub-picture 3, the red backlight drive unit does not control the lighting of the red backlight source.

[0102] In some embodiments, when the controller sends the generated backlight data to the corresponding backlight driving unit, it may further generate a target instruction, where the target instruction is used to instruct the backlight driving unit to process the backlight data corresponding to the main color.

[0103] For example, please refer to Figure 6 For red backlight data, sub-picture 1 is the backlight data of the primary color. When the controller sends the red backlight data to the red backlight driver unit, it also sends a target instruction. The target instruction can carry the identifier of sub-picture 1. When the red backlight driver unit processes the red backlight data, it can only process the backlight data corresponding to sub-picture 1 and not the backlight data corresponding to sub-pictures 2 and 3.

[0104] In some embodiments, when the controller generates backlight data, it may further adjust the backlight data according to the main color, for example, by removing data of non-main colors from the backlight data to reduce the amount of data.

[0105] The display method provided by the embodiment of the present application is as follows: the controller of the display device receives the synchronization signal and the image data of the next frame sent by the image processor; the synchronization signal is used to instruct the controller to perform display processing of the next frame; the M main colors of the sub-picture of the next frame are determined according to the synchronization signal; the next frame includes N sub-pictures; the sub-pictures include multiple colors, and the backlight sources corresponding to the main colors are the backlight sources that need to be lit when displaying the sub-pictures; M is an integer greater than or equal to 0, and N is an integer greater than or equal to 2; based on the image data and the main colors, the backlight drive unit is controlled to perform backlight control. The above method can reduce the amount of data processed by the backlight drive unit, thereby reducing backlight delay, suppressing the occurrence of color separation, and improving user experience.

[0106] In some embodiments, to improve the display effect, the controller can also adjust the image data based on the duration of the synchronization signal, for example, adjust the brightness data, color matching data, etc. in the image data. Figure 8 This process is explained.

[0107] Figure 8 A flow chart of another display method provided in an embodiment of the present application is shown as follows: Figure 8 Shown, including:

[0108] S801. Determine a backlight lighting strategy according to the duration level to which the duration of the synchronization signal belongs; the backlight lighting strategy is used to adjust the brightness level corresponding to the image data and / or the color temperature corresponding to the image data.

[0109] The premise for the implementation of the embodiment of the present application is that there is a backlight source that needs to be lit in the image data to be displayed, that is, Figure 6 As shown, the duration of the high level of the synchronization signal of any color corresponding to any sub-picture is greater than or equal to the preset duration.

[0110] In some embodiments, the controller may pre-define different duration levels, each corresponding to a certain duration range, for example, duration level 1 corresponds to 50 microseconds to 80 microseconds, duration level 2 corresponds to 81 microseconds to 100 microseconds, duration level 3 corresponds to 101 microseconds to 150 microseconds, etc.

[0111] In some embodiments, different duration levels correspond to corresponding backlighting strategies, for example, duration level 1 corresponds to backlighting strategy 1, duration level 2 corresponds to backlighting strategy 2, and duration level 3 corresponds to backlighting strategy 3. Different backlighting strategies can adjust the brightness level corresponding to the image data and / or the color temperature corresponding to the image data in different ways.

[0112] Exemplarily, backlight lighting strategy 1 can adjust the brightness data in the image data (for example, lowering the brightness and increasing the brightness); backlight lighting strategy 2 can adjust the ratio data of each color in the image data to adjust the color temperature corresponding to the image data (for example, adjusting the color temperature of the image data from cool to warm); backlight lighting strategy 3 can adjust the brightness data and the ratio data of each color in the image data.

[0113] In some embodiments, the correspondence between the duration level and the backlight lighting strategy can be predefined in the controller in the form of a relationship mapping table, or defined in the controller in the form of an index, which is not limited in the embodiments of the present application.

[0114] In some embodiments, for the images of the same video source, there can be one or more backlight lighting strategies. For example, when the controller determines the backlight lighting strategy based on the image of the first frame, the backlight lighting strategy can be applied to the images of all frames. Alternatively, the controller determines a backlight lighting strategy based on each frame, or the controller determines a backlight lighting strategy every N frames. For example, N frames can be 120 frames, 240 frames, etc. The following description uses one backlight lighting strategy as an example.

[0115] When the controller detects the duration of the synchronization signal, it can determine the duration level based on the duration and determine the backlighting strategy based on the correspondence between the duration level and the backlighting strategy. For example, if the duration of the synchronization signal is 70 microseconds, the controller can determine that the duration belongs to duration level 1 and the corresponding backlighting strategy is backlighting strategy 1.

[0116] In some embodiments, as Figure 6 As shown, for a frame of image, there are three sub-images and corresponding three sub-synchronization signals. The duration of the high level of the red synchronization signal corresponding to sub-image 1 is greater than the preset duration, the duration of the high level of the green synchronization signal corresponding to sub-image 2 is greater than the preset duration, and the duration of the high level of the blue synchronization signal corresponding to sub-image 3 is greater than the preset duration.

[0117] When determining the duration of the synchronization signal, the controller may use the maximum duration of the three sub-synchronization signals as the duration of the synchronization signal. Alternatively, the minimum duration of the three sub-synchronization signals may be used as the duration of the synchronization signal. Alternatively, the average duration of the three sub-synchronization signals may be used as the duration of the synchronization signal; or, each sub-synchronization signal has a corresponding weight, and the duration of the three sub-synchronization signals is weighted to determine the duration of the synchronization signal. The embodiment of the present application does not limit the method for determining the duration of the synchronization signal.

[0118] In some embodiments, the image processor can adjust the duration of the synchronization signal according to some preset factor values ​​so that the controller selects an appropriate backlight lighting strategy to improve the display effect. For example, the image processor can collect the current ambient brightness through an external sensor. If the ambient brightness is low, the image processor can adjust the duration of the synchronization signal so that the backlight lighting strategy selected by the controller can reduce the value of the brightness data in the image data to reduce the brightness of the backlight source, so that the display effect in a darker environment is not particularly dazzling. And / or, the image processor can collect the color temperature of the current environment through an external sensor and adjust the duration of the synchronization signal according to the color temperature. For example, if the current environment has a warm color temperature (such as a user watching TV in a warm color temperature), the image processor can adjust the duration of the corresponding synchronization signal so that the controller selects a backlight lighting strategy that adjusts the color ratio in the image data so that the display effect after controlling the backlight source to emit light is a warm color temperature effect.

[0119] S802: Control the backlight driving unit to perform backlight control according to the backlight lighting strategy.

[0120] In an embodiment of the present application, after the controller determines the backlight lighting strategy, it adjusts the image data according to the backlight lighting strategy, and combines the synchronization signal to generate corresponding backlight data, and sends the backlight data to the backlight driving unit so that the backlight driving unit controls the lighting of the backlight source according to the backlight data.

[0121] It should be understood that in the embodiment of the present application, the specific implementation method of the backlight driving unit to control the backlight source according to the backlight data is different from the Figure 5 The implementation in the illustrated embodiment is similar and will not be described again here.

[0122] In the display method provided in the embodiment of the present application, the controller determines the backlight lighting strategy through the duration of the synchronization signal, and controls the backlight according to the backlight lighting strategy, which can further improve the display effect of the display device.

[0123] Based on the above embodiments, embodiments of the present application further provide a display device. The display device includes: a display screen, an image processor, a backlight module, multiple backlight drive units, and a controller. The backlight module includes multiple backlight sources of different colors, with each backlight drive unit corresponding to a backlight source of a different color. The display device is applied to the controller.

[0124] Figure 9 A schematic diagram of the structure of a display device provided in an embodiment of the present application is shown in FIG. Figure 9 Shown, including:

[0125] The receiving module 901 is configured to receive a synchronization signal and image data of a next frame sent by the image processor; the synchronization signal is used to instruct the controller to perform display processing of the next frame;

[0126] Processing module 902 is configured to determine, based on the synchronization signal, M primary colors of a sub-picture of the next frame; the next frame includes N sub-pictures; the sub-pictures include multiple colors, and backlight sources corresponding to the primary colors are backlight sources that need to be illuminated when displaying the sub-pictures; M is an integer greater than or equal to 0, and N is an integer greater than or equal to 2;

[0127] The control module 903 is configured to control the backlight driving unit to perform backlight control according to the image data and the main color.

[0128] In some embodiments, the processing module 902 is further configured to determine the main color of the sub-picture according to the duration of the synchronization signal.

[0129] In some embodiments, the synchronization signal includes multiple sub-synchronization signals, and the sub-synchronization signals correspond one-to-one to the colors included in the sub-screen. The processing module 902 is also used to determine that for any sub-screen, if the duration of the high level of the sub-synchronization signal corresponding to any color in the sub-screen is greater than or equal to a preset duration, the color is determined to be the main color.

[0130] In some embodiments, the preset duration is pre-configured, or the preset duration is carried in the image data; different sub-synchronization signals correspond to the same or different preset durations.

[0131] In some embodiments, the control module 903 is further used to obtain backlight data corresponding to the image data; determine backlight data corresponding to non-primary colors in the backlight data; and send the backlight data and a target instruction to the backlight driving unit, wherein the target instruction is used to instruct the backlight driving unit not to process the backlight data corresponding to the non-primary colors.

[0132] In some embodiments, the processing module 903 is also used to determine the backlight lighting strategy according to the duration level to which the duration of the synchronization signal belongs when the duration of the high level of the synchronization signal is greater than or equal to a preset duration; the backlight lighting strategy is used to adjust the brightness level corresponding to the image data and / or the color temperature corresponding to the image data.

[0133] In some embodiments, the control module 903 is further configured to control the backlight driving unit to perform backlight control according to the backlight lighting strategy.

[0134] In some embodiments, the control module 903 is further configured to adjust the brightness data and / or the color matching data in the image data according to the backlight lighting strategy.

[0135] The display device provided in the present application is used to execute the display method provided in any of the above embodiments, and has similar implementation principles and technical effects, which will not be described herein.

[0136] It should be noted that the division of each module of the above device is only a logical division of functions, and all or part of the modules can be integrated into one physical entity, or can be physically separated. The modules can all be implemented in the form of software called by a processing element, or all be implemented in the form of hardware, or part of the modules are implemented in the form of software called by a processing element, and part of the modules are implemented in the form of hardware. Each module can be a separate processing element, or can be integrated into a chip of the above device, in addition, the functions of each module can be stored in the form of program code in the memory of the above device, and called and executed by a processing element of the above device. In addition, all or part of the modules can be integrated together, or can be independently implemented. The processing element herein can be an integrated circuit having a signal processing capability. In the implementation process, each step of the above method or each module can be completed by the integrated logic circuit of hardware or the instruction of software in the processing element.

[0137] The present application further provides a computer readable storage medium, which can include a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various storage program code media, and specifically, the computer readable storage medium stores program instructions, and the program instructions are used for the method in the above embodiments.

[0138] The present application further provides a program product, which includes execution instructions stored in a readable storage medium. At least one control module of a display device can read the execution instructions from the readable storage medium, and the at least one control module executes the execution instructions to enable the display device to implement the display method provided in the various embodiments.

[0139] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

[0140] For ease of explanation, the above description has been made with reference to specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations are possible. The above embodiments are selected and described to better explain the principles and practical applications, so that those skilled in the art can better utilize the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A display device, characterized in that: The display device includes: a display screen, an image processor, a backlight module, a plurality of backlight driving units, and a controller. The backlight module includes a plurality of backlight sources of different colors, each backlight driving unit corresponds to a backlight source of a color, and the controller is configured to: receiving a synchronization signal and image data of a next frame sent by the image processor; the synchronization signal is used to instruct the controller to perform display processing of the next frame; Determining M primary colors of a sub-picture of the next frame according to the synchronization signal; the next frame includes N sub-pictures; the sub-pictures include multiple colors, and backlight sources corresponding to the primary colors are backlight sources that need to be illuminated when displaying the sub-pictures; M is an integer greater than or equal to 0, and N is an integer greater than or equal to 2; The backlight driving unit is controlled to perform backlight control according to the image data and the main color.

2. The display device according to claim 1, wherein The controller is configured to: The main color of the sub-picture is determined according to the duration of the synchronization signal.

3. The display device according to claim 2, wherein The synchronization signal includes a plurality of sub-synchronization signals, and the sub-synchronization signals correspond to the colors included in the sub-picture one by one. The controller is configured to: For any sub-picture, if the duration of the high level of the sub-synchronization signal corresponding to any color in the sub-picture is greater than or equal to the preset duration, the color is determined to be the main color.

4. The display device according to claim 3, wherein The preset duration is pre-configured, or the preset duration is carried in the image data; different sub-synchronization signals correspond to the same or different preset durations.

5. The display device according to any one of claims 1 to 4, characterized in that: The controller is configured to: Acquiring backlight data corresponding to the image data; Determining backlight data corresponding to a non-primary color in the backlight data; The backlight data and a target instruction are sent to the backlight driving unit, where the target instruction is used to instruct the backlight driving unit not to process the backlight data corresponding to the non-primary color.

6. The display device according to claim 5, wherein: The controller is configured to: When the duration of the high level of the synchronization signal is greater than or equal to a preset duration, determining a backlight lighting strategy according to the duration level to which the duration of the synchronization signal belongs; The backlight lighting strategy is used to adjust the brightness level corresponding to the image data and / or the color temperature corresponding to the image data; According to the backlight lighting strategy, the backlight driving unit is controlled to perform backlight control.

7. The display device according to claim 6, wherein: The controller is configured to: The brightness data and / or color ratio data in the image data are adjusted according to the backlight lighting strategy.

8. A display method, characterized in that: The display device includes: a display screen, an image processor, a backlight module, a plurality of backlight driving units, and a controller. The backlight module includes a plurality of backlight sources of different colors, and each backlight driving unit corresponds to a backlight source of a color. The method is applied to the controller and includes: receiving a synchronization signal and image data of a next frame sent by the image processor; the synchronization signal is used to instruct the controller to perform display processing of the next frame; Determining M primary colors of a sub-picture of the next frame according to the synchronization signal; the next frame includes N sub-pictures; the sub-pictures include multiple colors, and backlight sources corresponding to the primary colors are backlight sources that need to be illuminated when displaying the sub-pictures; M is an integer greater than or equal to 0, and N is an integer greater than or equal to 2; The backlight driving unit is controlled to perform backlight control according to the image data and the main color.

9. A storage medium, characterized in that: The storage medium stores computer-executable instructions, which are used to implement the method according to claim 8 when executed by a processor.

10. A computer program product, characterized in that The invention comprises a computer program, which implements the method according to claim 8 when the computer program is executed by a processor.

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