Backlight control method and device for field sequential display, equipment and medium

Abstract

The invention relates to the technical field of field sequential display, in particular to a backlight control method, device and equipment of a field sequential display and a medium, which are used for solving the problems of smear, display blurring, color separation and the like of a traditional field sequential display. The method comprises the following steps: performing color conversion on an input target frame image to obtain sub-frames corresponding to multiple field sequential backlights, respectively analyzing the plurality of subframes to obtain pixel information corresponding to the plurality of subframes; and then, based on the pixel information corresponding to the plurality of subframes, determining an alternating sequence of the plurality of subframes, thereby determining a backlight control signal corresponding to the target frame image based on the alternating sequence, and performing backlight control on a plurality of field order backlights based on the backlight control signal so as to display the target frame image in the liquid crystal panel, therefore, according to the pixel information corresponding to each sub-frame, the rotation sequence between the sub-frames is dynamically determined, and the display efficiency between the sub-frames of the target frame image is optimized, so that the image saturation and contrast of the liquid crystal panel are improved.

Description

Technical Field

[0001] The present application relates to the field of field sequential display technology, and in particular to a backlight control method, device, equipment and medium for a field sequential display. Background Art

[0002] With the development of liquid crystal display technology, field sequential liquid crystal display technology is booming as a new display technology different from traditional methods. Compared with traditional liquid crystal display technology, field sequential liquid crystal display technology is to light up the field sequential backlight of different colors in sequence in time, and with the color effect displayed by the liquid crystal panel, it can remove the filter of the traditional display to save costs, and can also remove the absorption of the filter on the backlight to reduce power consumption, greatly reducing energy loss and improving color contrast. Therefore, field sequential displays are becoming more and more popular in the industry.

[0003] However, compared with traditional displays, field sequential displays have higher refresh rate requirements. For example, traditional displays display images at 60Hz, while field sequential displays require 180Hz; liquid crystal molecules are voltage-driven flip devices, not instantaneous responses, and high refresh rates require liquid crystal molecules to respond fast enough, but the response speed of liquid crystal molecules is related to their molecular materials, and it is currently difficult to upgrade. Therefore, field sequential displays are prone to problems such as smearing and blurred display during use. In addition, since the current field sequential display lights up different color backlights in sequence, and various colors are formed through the integration effect of the human eye, the images displayed by the LCD panel are prone to color separation during use. Summary of the invention

[0004] The embodiments of the present application provide a backlight control method, device, equipment and medium for a field sequential display, which are used to improve the image saturation and contrast of a liquid crystal panel by optimizing the inter-frame display efficiency, and reduce or eliminate problems such as image color cast and color separation.

[0005] The specific technical solutions provided by the embodiments of this application are as follows:

[0006] In a first aspect, an embodiment of the present application provides a backlight control method for a field sequential display, wherein the field sequential display includes a liquid crystal panel and a plurality of field sequential backlights, including:

[0007] Performing color conversion on the input target frame image to obtain subframes corresponding to the plurality of field sequential backlights;

[0008] Analyzing the multiple subframes respectively to obtain pixel information corresponding to the multiple subframes;

[0009] Based on the pixel information corresponding to the multiple sub-frames, determining the rotation order of the multiple sub-frames, and based on the rotation order, determining the backlight control signal corresponding to the target frame image, wherein the rotation order represents the switching order of the multiple field sequential backlights when displaying the target frame image;

[0010] Based on the backlight control signal, the plurality of field sequential backlights are backlight controlled to display the target frame image on the liquid crystal panel.

[0011] A backlight control method for a field sequential display provided in an embodiment of the present application is adopted. By parsing multiple subframes, the corresponding pixel information of each subframe is obtained, and then the rotation order between the subframes is dynamically determined according to the pixel information corresponding to each subframe. The rotation order represents the switching order of multiple field sequential backlights when displaying a target frame image, so as to optimize the display efficiency between the subframes of the target frame image, thereby improving the picture saturation and contrast of the liquid crystal panel, and reducing or eliminating problems such as picture color deviation and color separation.

[0012] In a possible implementation manner, determining the rotation order corresponding to the multiple subframes based on the pixel information corresponding to the multiple subframes includes:

[0013] Based on a correspondence between a preset pixel relationship and a rotation order, obtaining the rotation order corresponding to a first pixel relationship, wherein the first pixel relationship is determined based on pixel information corresponding to the plurality of subframes; or

[0014] The rotation order is determined based on a second pixel relationship between multiple subframes of a reference frame image and the first pixel relationship, wherein the reference frame image includes at least one frame image before the target frame image, and the last frame image of the at least one frame image is adjacent to the target frame image, and the second pixel relationship is determined based on pixel information corresponding to multiple subframes of the reference frame image; or,

[0015] Arrange and combine multiple subframes of the target frame image to obtain at least two groups, and for any one of the at least two groups, determine an estimated value corresponding to the any one group based on pixel information corresponding to each subframe in the any one group; and determine the order of the subframes in the group corresponding to the smallest estimated value as the rotation order.

[0016] The above method analyzes the pixel information corresponding to multiple subframes to dynamically determine the rotation order of the multiple subframes based on the pixel information corresponding to the multiple subframes, so as to optimize the display efficiency between the subframes of the target frame image and prepare for the subsequent improvement of the picture saturation and contrast of the LCD panel.

[0017] In a possible implementation manner, determining the estimated value corresponding to any group based on the pixel information corresponding to each subframe in any group includes:

[0018] Based on the pixel information corresponding to each subframe in any one of the groups, determining the components of each of the two adjacent subframes, wherein the components include the liquid crystal flip change component and / or the target liquid crystal accumulation component;

[0019] The sum of the determined components is used as the estimated value corresponding to any one of the groups.

[0020] The above method determines the estimated value of the corresponding group based on the pixel information corresponding to each subframe in each group, preparing for the subsequent determination of the optimal group from multiple groups, thereby determining the optimal rotation order of multiple subframes to optimize the display efficiency between the subframes of the target frame image.

[0021] In a possible implementation, each component further includes a component from a reference subframe to a first subframe in any group, wherein the reference subframe is the last subframe of a previous frame image continuous with the target frame image.

[0022] In the above method, each component of the estimated value includes the components from the last subframe of the previous frame image to the first subframe in the group based on the target frame image, which can further optimize the display efficiency between frames and further improve the picture saturation and contrast of the liquid crystal panel.

[0023] In a possible implementation, determining the target liquid crystal cumulative component of any two adjacent subframes includes:

[0024] Determining a grayscale change value between two adjacent subframes;

[0025] For any liquid crystal molecule in the liquid crystal panel, determining a flip response time of the any liquid crystal molecule based on an operating temperature of the any liquid crystal molecule and the grayscale change value;

[0026] If the flip response time of any of the liquid crystal molecules is greater than a preset value, the any of the liquid crystal molecules is determined to be a target liquid crystal molecule, and the target liquid crystal cumulative component is determined based on the total number of target liquid crystal molecules, wherein the preset value represents a baseline flip response time of the liquid crystal molecules of the liquid crystal panel.

[0027] The above method incorporates more reference factors in the process of determining the rotation order corresponding to multiple sub-frames of the target frame image, that is, judging the cumulative component of each target liquid crystal based on the benchmark flip response time, and can more accurately determine a backlight and data sending order, so that the total number of liquid crystal molecules that are not flipped in place is smaller, thereby ensuring that when the backlight is turned on, the image quality problem caused by the flip response time of the liquid crystal molecules is reduced.

[0028] In a possible implementation manner, the performing backlight control on the plurality of field sequential backlights based on the backlight control signal includes:

[0029] Sending the backlight control signal to the liquid crystal panel to control the liquid crystal panel to switch the plurality of field sequential backlights based on the backlight control signal;

[0030] The image data of each subframe of the target frame image is sent to the liquid crystal panel in sequence according to the rotation order, so as to control the liquid crystal panel to flip the liquid crystal molecules in the liquid crystal panel based on the image data of the target subframe after receiving the image data of the target subframe.

[0031] The above method, since the determined rotation order can ensure that when the field sequential backlight is turned on, the image quality problem caused by the flip response time of the liquid crystal molecules is reduced, therefore, the image data of the corresponding subframe is sent in this rotation order, and multiple field sequential backlights are switched based on the backlight control signal. This can ensure the saturation and contrast of the picture displayed in the liquid crystal panel, improve the display efficiency, and reduce or eliminate problems such as ghosting, display blur, and color separation.

[0032] In a possible implementation manner, the pixel information includes part or all of target pixel quantity information, pixel value information, and pixel grayscale information.

[0033] The above method dynamically controls the field sequential backlight according to the pixel information of the target frame image, that is, the image content, which can optimize the inter-frame display efficiency, improve the image saturation and contrast of the LCD panel, and reduce or eliminate problems such as color cast and color separation.

[0034] In a second aspect, an embodiment of the present application provides a backlight control device for a field sequential display, wherein the field sequential display includes a liquid crystal panel and a plurality of field sequential backlights, including:

[0035] A conversion module, used for performing color conversion on the input target frame image to obtain subframes corresponding to the plurality of field sequential backlights;

[0036] An analysis module, used to analyze the multiple sub-frames respectively to obtain pixel information corresponding to the multiple sub-frames;

[0037] A determination module, configured to determine a rotation order of the plurality of subframes based on pixel information corresponding to the plurality of subframes, and determine a backlight control signal corresponding to the target frame image based on the rotation order, wherein the rotation order represents a switching order of the plurality of field sequential backlights when displaying the target frame image;

[0038] A control module is used to perform backlight control on the multiple field sequential backlights based on the backlight control signal to display the target frame image on the liquid crystal panel.

[0039] In a possible implementation manner, the determining module is specifically configured to:

[0040] Based on a correspondence between a preset pixel relationship and a rotation order, obtaining the rotation order corresponding to a first pixel relationship, wherein the first pixel relationship is determined based on pixel information corresponding to the plurality of subframes; or

[0041] The rotation order is determined based on a second pixel relationship between multiple subframes of a reference frame image and the first pixel relationship, wherein the reference frame image includes at least one frame image before the target frame image, and the last frame image of the at least one frame image is adjacent to the target frame image, and the second pixel relationship is determined based on pixel information corresponding to multiple subframes of the reference frame image; or,

[0042] Arrange and combine multiple subframes of the target frame image to obtain at least two groups, and for any one of the at least two groups, determine an estimated value corresponding to the any one group based on pixel information corresponding to each subframe in the any one group; and determine the order of the subframes in the group corresponding to the smallest estimated value as the rotation order.

[0043] In a possible implementation manner, the determining module is specifically configured to:

[0044] Based on the pixel information corresponding to each subframe in any one of the groups, determining the components of each of the two adjacent subframes, wherein the components include the liquid crystal flip change component and / or the target liquid crystal accumulation component;

[0045] The sum of the determined components is used as the estimated value corresponding to any one of the groups.

[0046] In a possible implementation, each component further includes a component from a reference subframe to a first subframe in any group, wherein the reference subframe is the last subframe of a previous frame image continuous with the target frame image.

[0047] In a possible implementation manner, the determining module is specifically configured to:

[0048] Determining a grayscale change value between two adjacent subframes;

[0049] For any liquid crystal molecule in the liquid crystal panel, determining a flip response time of the any liquid crystal molecule based on an operating temperature of the any liquid crystal molecule and the grayscale change value;

[0050] If the flip response time of any of the liquid crystal molecules is greater than a preset value, the any of the liquid crystal molecules is determined to be a target liquid crystal molecule, and the target liquid crystal cumulative component is determined based on the total number of target liquid crystal molecules, wherein the preset value represents a baseline flip response time of the liquid crystal molecules of the liquid crystal panel.

[0051] In a possible implementation, the control module is specifically used to:

[0052] Sending the backlight control signal to the liquid crystal panel to control the liquid crystal panel to switch the plurality of field sequential backlights based on the backlight control signal;

[0053] The image data of each subframe of the target frame image is sent to the liquid crystal panel in sequence according to the rotation order, so as to control the liquid crystal panel to flip the liquid crystal molecules in the liquid crystal panel based on the image data of the target subframe after receiving the image data of the target subframe.

[0054] In a possible implementation manner, the pixel information includes part or all of target pixel quantity information, pixel value information, and pixel grayscale information.

[0055] In a third aspect, an embodiment of the present application provides a display device, including:

[0056] Field sequential display;

[0057] Memory, used to store computer programs or instructions;

[0058] A processor is used to execute the computer program or instructions in the memory so that any method in the first aspect described above is executed.

[0059] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, which, when instructions in the storage medium are executed by a processor, enables the processor to execute any of the methods described in the first aspect above.

[0060] In addition, the technical effects brought about by any one of the implementation methods in the second to fourth aspects can refer to the technical effects brought about by different implementation methods in the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Figure 1 This is a schematic diagram of an application scenario in an embodiment of the present application;

[0062] Figure 2 It is a flowchart of a backlight control method of a field sequential display in an embodiment of the present application;

[0063] Figure 3 This is a schematic diagram of the structure of a field sequential display in an embodiment of the present application;

[0064] Figure 4A A flowchart of a rotation order determination method in an embodiment of the present application is shown in FIG. Figure 1 ;

[0065] Figure 4B A flowchart of a rotation order determination method in an embodiment of the present application is shown in FIG. Figure 2 ;

[0066] Figure 4C A flowchart of a rotation order determination method in an embodiment of the present application is shown in FIG. Figure 3 ;

[0067] Figure 5 A schematic diagram of a process for determining a rotation order of multiple frame images in an embodiment of the present application;

[0068] Figure 6 This is a schematic diagram of a process for determining an estimated value corresponding to a group in an embodiment of the present application;

[0069] Figure 7 Schematic diagram of a process of determining a target liquid crystal cumulative component of each of two adjacent subframes in an embodiment of the present application;

[0070] Figure 8 This is a schematic diagram of a specific process of backlight control in an embodiment of the present application;

[0071] Fig. 9 A schematic diagram of the logic architecture of a backlight control device for a field sequential display according to an embodiment of the present application;

[0072] Fig.10 It is a schematic diagram of the physical structure of the display device in the embodiment of the present application. DETAILED DESCRIPTION

[0073] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0074] It should be noted that the terms "first", "second", "third", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0075] The following is a brief introduction to the design concept of the embodiments of the present application.

[0076] The present application relates to the field of field sequential display technology, and mainly to a backlight control method, device, equipment and medium of a field sequential display.

[0077] Color field sequential display is one of the methods for display devices to achieve color display. The principle is as follows: in field sequential display, a frame image to be displayed is divided into multiple monochrome color component images (hereinafter referred to as subframes in the embodiments of the present application) according to color, and a frame display time is divided into multiple subfield sequences corresponding to the subframes one by one. The subframes are displayed in the corresponding subfield sequences, and multiple subframes are quickly switched within the display time of one frame. The visual persistence effect of the human eye is used to achieve color superposition in time, thereby achieving color display.

[0078] A liquid crystal display that uses a color field sequential display method to achieve color display is called a field sequential color liquid crystal display (FSC-LCD), which can also be referred to as a field sequential display. The field sequential display includes a liquid crystal panel and a backlight module, and the backlight module can provide a field sequence backlight corresponding to the subfield sequence for the liquid crystal panel. In the subfield sequence, the pixel drive data corresponding to the subframe is written to the liquid crystal panel (subsequently recorded as image data in the embodiment of the present application). After the image data is written, the liquid crystal molecules in the liquid crystal panel are driven and moved to the position corresponding to the subframe; then, the backlight module is controlled to turn on the field sequence backlight corresponding to the subfield sequence to achieve the display of the subframe in the corresponding field sequence.

[0079] However, field sequential displays require a high refresh rate for the LCD panel. For example, a traditional display displays an image at 60Hz, while a field sequential display requires 180Hz. Liquid crystal molecules are voltage-driven flip devices, not instantaneous responses. High refresh rates require the response speed of liquid crystal molecules to be fast enough, but the response speed of liquid crystal molecules is related to their molecular materials, and it is currently difficult to upgrade. Therefore, field sequential displays are prone to problems such as smearing and blurred display during use. In addition, since the current field sequential display lights up different color backlights in sequence, and various colors are formed through the integration effect of the human eye, the images displayed by the LCD panel are prone to color separation during use.

[0080] In view of this, in order to solve the problems of smearing, blurred display, color separation, etc. that traditional field sequential displays are prone to produce during use, an embodiment of the present application provides a backlight control method for a field sequential display. In the embodiment of the present application, the input target frame image is color converted to obtain subframes corresponding to multiple field sequential backlights of the field sequential display, and the multiple subframes are analyzed respectively to obtain pixel information corresponding to each of the multiple subframes; then, based on the pixel information corresponding to the multiple subframes, the rotation order of the multiple subframes is determined, and then based on the rotation order, the backlight control signal corresponding to the target frame image is determined, and based on the backlight control signal, the multiple field sequential backlights are backlight controlled to display the target frame image in the liquid crystal panel. In this way, the rotation order between the subframes is dynamically determined through the pixel information corresponding to each subframe, wherein the rotation order represents the switching order of the multiple field sequential backlights when displaying the target frame image, so as to optimize the display efficiency between the subframes of the target frame image, thereby improving the picture saturation and contrast of the liquid crystal panel, and reducing the picture color deviation and color separation.

[0081] The following introduces an application scenario of an optional backlight control method for a field sequential display provided in an embodiment of the present application in conjunction with the accompanying drawings.

[0082] like Figure 1 As shown, the application scenario includes a display device 10 and a server 20. The display device 10 utilizes a backlight control method for a field sequential display provided by an embodiment of the present application to dynamically determine the rotation order of multiple subframes based on pixel information corresponding to multiple subframes of a target frame image, thereby controlling multiple field sequential backlights based on a backlight control signal determined by the rotation order to complete the display of the target frame image.

[0083] In some feasible embodiments, the display device 10 may be any form of display device having a field sequential display; for example, a large screen display, a smart screen, a display device, a commercial screen display, etc.

[0084] Of course, the method provided in the embodiment of the present application is not limited to Figure 1 The application scenario shown can also be used in other possible application scenarios, which are not limited in the embodiments of the present application.

[0085] After introducing the application scenarios of the embodiments of the present application, the preferred implementation modes of the present application are further described in detail below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In addition, the embodiments of the present application and the features in the embodiments may be combined with each other if there is no conflict.

[0086] See also Figure 2As shown, an embodiment of the present application provides a backlight control method for a field sequential display, the field sequential display includes a liquid crystal panel and a plurality of field sequential backlights, and the specific process of the method is as follows:

[0087] Step 200: Perform color conversion on the input target frame image to obtain sub-frames corresponding to multiple field sequential backlights.

[0088] In the present application, see Figure 3 As shown in the schematic diagram of the structure of the field sequential display, the field sequential display includes a color conversion module, a backlight control module, a plurality of field sequential backlights, an image control module and a liquid crystal panel.

[0089] In a specific implementation, when executing step 200, the target frame image is input into the color conversion module of the field sequential display, and the color conversion module performs color conversion on the target frame image, converting the target frame image into multiple sub-frames, each sub-frame corresponding to a field sequential backlight, wherein the multiple field sequential backlights can be red, green, and blue backlights, or can be backlights of other colors, such as red, green, blue, cyan, etc., and can also be colors corresponding to other monochrome backlights.

[0090] In an embodiment of the present application, by executing step 200, the image data of the target frame image can be converted into red, green, and blue pixel values; it can also be converted into other color pixel values, such as YUV, wherein "Y" represents brightness (Luminance or Luma), that is, grayscale value, "U" represents chrominance (Chrominance or Chroma), and "V" represents concentration or saturation; it can also be converted into other color pixel values ​​corresponding to monochrome backlight. It can be understood that the present application does not limit the specific encoding format of the image data of the subframe.

[0091] It should be noted that the target frame image in the embodiment of the present application can be the original frame image to be displayed, or it can be the frame image to be displayed after enhancement or other pre-processing, that is, image data of different precisions can adopt the above method provided in the embodiment of the present application to improve the picture saturation and contrast of the liquid crystal panel. It can be understood that the specific precision information of the target frame image in the embodiment of the present application is not limited.

[0092] It should also be noted that the above-mentioned target frame image can be a frame image or a continuous plurality of frame images to be displayed. It can be understood that the above-mentioned method can perform dynamic backlight control for a single frame or for multiple frames, and this application does not make specific limitations.

[0093] Step 210: Analyze the multiple sub-frames respectively to obtain pixel information corresponding to the multiple sub-frames.

[0094] In the present application embodiment, still refer to Figure 3As shown, after executing step 200 to obtain multiple subframes of the target frame image, the color conversion module sends the multiple subframes to the backlight control module and the image control module respectively; when executing step 210, for any subframe among the multiple subframes, the backlight control module parses the image data of the subframe, that is, parses the pixel value of each pixel of the subframe to obtain pixel information corresponding to the subframe, wherein the pixel information includes part or all of the target pixel quantity information, pixel value information and pixel grayscale information.

[0095] In a specific implementation, the backlight control module can obtain the target pixel quantity information corresponding to the subframe in the following manner: determine the number of target pixels whose pixel values ​​in each pixel of the subframe are greater than a threshold as the target pixel quantity information corresponding to the subframe.

[0096] In a specific implementation, the backlight control module can obtain the pixel value information corresponding to the subframe in the following manner: determine the first pixel value of each pixel in the subframe as the pixel value information corresponding to the subframe, wherein the first value is any one of the mean, maximum and minimum values ​​of the pixel values ​​corresponding to each pixel.

[0097] In a specific implementation, the backlight control module can obtain the pixel grayscale information corresponding to the subframe in the following manner: determine the second numerical value of each pixel in the subframe as the pixel grayscale information corresponding to the subframe, wherein the second numerical value is any one of the mean, maximum and minimum values ​​of the grayscale values ​​corresponding to each pixel.

[0098] It should be noted that the grayscale value corresponding to each pixel can be obtained by converting the pixel value of each pixel, for example, using an RGB encoding format, such as a pixel value (1, 2, 3), where 1 represents the grayscale value of the R channel, and so on.

[0099] Step 220: Determine a rotation order of the multiple sub-frames based on pixel information corresponding to the multiple sub-frames, wherein the rotation order represents a switching order of multiple field sequential backlights when displaying the target frame image.

[0100] In the embodiment of the present application, after obtaining the pixel information corresponding to each of the multiple subframes, the rotation order of the multiple subframes can be determined in a variety of ways according to the pixel information corresponding to the multiple subframes. Specifically, a preset mode can be used, or a mapping method can be used. Three methods for determining the rotation order of multiple subframes are given in the embodiment of the present application below.

[0101] The first method (preset mode):

[0102] In the specific implementation, when executing step 220, refer to Figure 4A As shown, the backlight control module can determine the rotation order of multiple subframes by executing the following steps:

[0103] Step 2201 ′: based on the pixel information corresponding to the multiple sub-frames, determine a first pixel relationship between the multiple pixel information.

[0104] In the embodiment of the present application, when executing step 2201', the backlight control module determines the first pixel relationship between the multiple pixel information based on the pixel information corresponding to the multiple subframes of the target frame image, wherein the first pixel relationship can be the relationship between the multiple candidate pixel information.

[0105] For example, take the target frame image at time T as an example. In an embodiment of the present application, the target frame image at time T is subjected to color conversion to obtain three subframes, which are respectively recorded as subframe 1, subframe 2, and subframe 3. Assume that the number of target pixels whose pixel values ​​in these three subframes are greater than the threshold value is 35 (subframe 1), 20 (subframe 2), and 58 (subframe 3). Then the target pixel quantity information corresponding to these three subframes is 35 (subframe 1), 20 (subframe 2), and 58 (subframe 3); then, the first pixel relationship between the three candidate pixel information can be 58 (subframe 3)>35 (subframe 1)>20 (subframe 2).

[0106] For another example, still taking the target frame image at time T as an example, assuming that the pixel value information corresponding to the three subframes is 215 (subframe 1), 156 (subframe 2), and 123 (subframe 3), respectively. Then the first pixel relationship between the three candidate pixel information corresponding to the three subframes can also be 215 (subframe 1)>156 (subframe 2)>123 (subframe 3).

[0107] If the pixel information is pixel grayscale information, the first pixel relationship may be determined in a manner similar to the manner of determining the target pixel quantity information and / or pixel value information corresponding to the three subframes, which will not be described in detail herein.

[0108] Step 2202': based on the corresponding relationship between the preset pixel relationship and the rotation sequence, obtain the rotation sequence corresponding to the first pixel relationship.

[0109] In some feasible embodiments, when the preset mode is adopted, after the backlight control module executes step 200 to obtain the subframes of the target frame image corresponding to the multiple field sequence backlights, it can also directly determine the rotation order of the multiple subframes of the input preset number of target frame images as the same rotation order. For example, if in the preset mode, it is preset that every three target frame images adopt the same rotation order, wherein the specific rotation order to be adopted can be selected from the preset rotation order set, and can be selected in sequence according to the priority of each rotation order in the rotation order set.

[0110] The second method (mapping method 1):

[0111] In the specific implementation, when executing step 220, refer to Figure 4B As shown, the backlight control module can determine the rotation order of multiple subframes by executing the following steps:

[0112] Step 2201 ′: based on the pixel information corresponding to the multiple sub-frames, determine a first pixel relationship between the multiple pixel information.

[0113] Step 2202": Determine the rotation order based on the second pixel relationship and the first pixel relationship between multiple subframes of the reference frame image, wherein the reference frame image includes at least one frame image that is located before the target frame image, and the last frame image in the at least one frame image is adjacent to the target frame image, and the second pixel relationship is determined based on pixel information corresponding to multiple subframes of the reference frame image.

[0114] In an embodiment of the present application, the rotation order of the multiple subframes of the reference frame image may be determined or not. If the rotation order of the multiple subframes of the reference frame image has been determined, then when executing step 2202", based on the first pixel relationship between the pixel information corresponding to the multiple subframes of the target frame image and the second pixel relationship between the multiple subframes of the reference frame image, combined with the rotation order of the multiple subframes of the reference frame image, the rotation order of the multiple subframes of the target frame image is determined, so that the liquid crystal flipping failure during the display process of the liquid crystal panel from the reference frame image to the target frame image is reduced. For example, the second pixel relationship between the pixel information corresponding to the multiple subframes of the reference frame image is subframe 1>subframe 3>subframe 2, and the rotation order is subframe 1, subframe 3, subframe 2, and the first pixel relationship corresponding to the subframes of the target frame image is subframe 3>subframe 1>subframe 2, then the rotation order of the multiple subframes of the target frame image can be determined as subframe 2, subframe 1, subframe 3.

[0115] In some feasible embodiments, if the rotation order of the multiple subframes of the reference frame image has not been determined, when executing step 2202″ to determine the rotation order of the multiple subframes of the target frame image, the rotation order of the multiple subframes of the reference frame image can be determined at the same time, such as Figure 5 The method of determining the rotation order is shown.

[0116] For example, see Figure 5 As shown, two consecutive frame images are taken as an example.

[0117] Assume that two consecutive frame images are respectively a target frame image at time t+1 and a reference frame image at time t, and the pixel information is target pixel quantity information.

[0118] It is also assumed that based on the target pixel quantity information corresponding to multiple subframes of the target frame image at time t+1, the first pixel relationship between the multiple target pixel quantity information is determined to be Num_B_t1>Num_G_t1>Num_R_t1; and, based on the target pixel quantity information corresponding to multiple subframes of the reference frame image at time t, the second pixel relationship between the multiple target pixel quantity information is determined to be Num_R_t>Num_G_t>Num_B_t.

[0119] Then, since the second pixel relationship of the reference frame image at time t is the number of red pixels > the number of green pixels > the number of blue pixels; the first pixel relationship of the target frame image at time t+1 is the number of blue pixels > the number of green pixels > the number of red pixels, it can be determined that the rotation order of the multiple subframes of the tth frame is red, green, blue; the rotation order of the multiple subframes of the t+1th frame is blue, green, red.

[0120] Assuming that the reference frame image at time t and the target frame image at time t+1 both adopt the RGB encoding format, then, in a specific implementation, the reference frame image at time t can transmit the image data of each subframe in sequence according to the target pixel quantity information from most to least, and control the rotation order of multiple field sequential backlights, that is, send the image data of the red, green, and blue channels in sequence, and light up the red, green, and blue field sequential backlights in sequence; the target frame image at time t+1 transmits the image data of each subframe in sequence according to the target pixel quantity information from least to most, and controls the rotation order of multiple field sequential backlights, that is, send the image data of the blue, green, and red channels in sequence, and light up the blue, green, and red field sequential backlights in sequence.

[0121] In this way, through this transmission method and the rotation order of the field sequence backlight corresponding to each subframe, it can be ensured that the number of liquid crystal molecules participating in the flipping change in each consecutive two liquid crystal molecule flippings is minimized. Even if the flipping response time of the liquid crystal molecules is slow, when the corresponding field sequence backlight is turned on, the number of affected liquid crystal molecules will be reduced, and the color deviation phenomenon will also be weakened.

[0122] The third method (mapping method 2):

[0123] In the specific implementation, when executing step 220, refer to Figure 4C As shown, the backlight control module can determine the rotation order of multiple subframes by executing the following steps:

[0124] Step 2201'': Arrange and combine multiple subframes of the target frame image to obtain at least two groups.

[0125] In the embodiment of the present application, when executing step 2201'', the backlight control module can arrange and combine multiple subframes to obtain all candidate rotation orders of the multiple subframes, wherein each candidate rotation order is recorded as a group, then at least two groups can be obtained.

[0126] Step 2202'': for any group of the at least two groups, determine an estimated value corresponding to the group based on pixel information corresponding to each subframe in the group.

[0127] In the embodiment of the present application, for any group of at least two groups, when executing step 2202', refer to Figure 6 As shown, the estimated value corresponding to the group can be determined by performing the following steps:

[0128] Step 600: Based on the pixel information corresponding to each subframe in the group, determine the components of each two adjacent subframes, wherein the components include the liquid crystal flip change component and / or the target liquid crystal accumulation component.

[0129] In an embodiment of the present application, each group includes a candidate rotation order of multiple subframes. Then, when executing step 600, for any group of at least two groups, the backlight control module determines, based on the pixel information corresponding to each subframe in the group, the components from the first subframe to the second subframe in the group, and the components from the second subframe to the third subframe, until the components of the last subframe in the group, wherein the components include liquid crystal flip change components and / or target liquid crystal accumulation components.

[0130] In a specific implementation, when executing step 600 to determine the liquid crystal flip change component of each adjacent subframe, the backlight control module specifically determines the difference between the target pixel quantity information or the pixel value information corresponding to the two adjacent subframes as the liquid crystal flip change component of the two adjacent subframes; or, the backlight control module determines the difference between the target pixel quantity information corresponding to the two adjacent subframes and the sum of the difference between the pixel value information corresponding to the two adjacent subframes as the liquid crystal flip change component of the two adjacent subframes.

[0131] For specific implementation, see Figure 7 As shown, when executing step 600 to determine the target liquid crystal cumulative component of each two adjacent subframes, the target liquid crystal cumulative component of any two adjacent subframes is obtained by executing the following steps:

[0132] Step 6001: Determine the grayscale change value between the two adjacent subframes.

[0133] In the embodiment of the present application, when executing step 6001, the backlight control module determines the difference between the pixel grayscale information corresponding to two adjacent subframes as the grayscale change value between the two adjacent subframes.

[0134] Step 6002: For any liquid crystal molecule in the liquid crystal panel, determine the flip response time of the liquid crystal molecule based on the operating temperature and grayscale change value of the liquid crystal molecule.

[0135] According to prior knowledge, the response speed of liquid crystal flipping corresponding to different pixel values ​​is different. For example, the flipping response time of liquid crystal molecules is different when they flip from 255 grayscale to 128 grayscale and from 255 grayscale to 200 grayscale. Due to the panel arrangement, the operating temperatures of liquid crystal molecules in different areas are different, and the response characteristics of liquid crystal molecules will also change at different temperatures. In addition, due to the panel process, the flipping response time of liquid crystal molecules in different areas is also different, etc. Therefore, in the embodiment of the present application, in the process of determining the rotation order corresponding to multiple subframes of the target frame image, more reference factors are incorporated, so that a backlight and data sending order can be determined more accurately, so that the total number of liquid crystal molecules that fail to flip in place is smaller, thereby ensuring that when the field sequential backlight is turned on, the image quality problem caused by the flipping response time of the liquid crystal molecules is reduced.

[0136] Based on the above prior knowledge, a function is constructed based on the grayscale change value grey of two adjacent subframes and the liquid crystal molecule working temperature temp to determine the flip response time time of each liquid crystal molecule, as shown in the following formula:

[0137] time=f(grey,temp)

[0138] In a specific implementation, when executing step 6002, for any liquid crystal molecule in the liquid crystal panel, based on the grayscale change value and the operating temperature of the liquid crystal molecule, the above formula is used to obtain the flip response time time of the liquid crystal molecule, and then, it is determined whether the time is greater than a preset value, such as t_th. t_th is the benchmark flip response time of the liquid crystal molecules of the liquid crystal panel, that is, the time from sending image data to lighting of the field sequential backlight, which is usually a fixed value.

[0139] It should be noted that the operating temperature of the liquid crystal molecules can be obtained by existing methods, such as calculating according to the cumulative working time of the liquid crystal molecules, and this application does not make any specific limitation.

[0140] Step 6003: If the flip response time of the liquid crystal molecule is greater than a preset value, the liquid crystal molecule is determined to be a target liquid crystal molecule, and the target liquid crystal cumulative component is determined based on the total number of target liquid crystal molecules, wherein the preset value represents a baseline flip response time of the liquid crystal molecules of the liquid crystal panel.

[0141] In a specific implementation, if time is greater than t_th, that is, within the time from when the liquid crystal panel sends image data to when the field sequential backlight is turned on, the liquid crystal molecule fails to flip to the target position of the second subframe; then step 6003 is executed to determine the liquid crystal molecule as the target liquid crystal molecule, and then, based on the determined total number of target liquid crystal molecules, the target liquid crystal cumulative component is determined, that is, the total number of target liquid crystal molecules is determined as the target liquid crystal cumulative component, and the target liquid crystal cumulative component represents the cumulative number of liquid crystal molecules that are not flipped into place between two adjacent subframes.

[0142] Step 610: The sum of the determined components is used as the estimated value corresponding to the group.

[0143] In an embodiment of the present application, by executing step 610, the backlight control module will sequentially determine the components from the first subframe to the second subframe in the group, and the components from the second subframe to the third subframe, until the components of the last subframe in the group, and perform a sum operation to obtain an estimated value corresponding to the group.

[0144] In some possible embodiments, the above-mentioned components also include components from a reference subframe to the first subframe in the group, wherein the reference subframe is the last subframe of the previous frame image continuous with the target frame image. Thus, when determining the rotation order of multiple subframes of the target frame image, the components from the last subframe of the previous frame image continuous with the target frame image to the first subframe in the group are included, so that the subsequent rotation order can ensure that the number of liquid crystal molecules involved in the flipping change in two consecutive frames of liquid crystal flipping is minimized. Even if the flipping response time of the liquid crystal molecules is slow, when the field sequential backlight is turned on, the number of affected liquid crystal molecules will be reduced, thereby improving the inter-frame display efficiency, improving the picture saturation and contrast of the liquid crystal panel, and reducing the picture color deviation and color separation.

[0145] Step 2203'': Determine the order of subframes in the group corresponding to the minimum estimated value as the rotation order.

[0146] In the embodiment of the present application, when executing step 2203'", the backlight control module selects the smallest estimated value from the obtained estimated values, and determines the order of each subframe in the group corresponding to the smallest estimated value as the rotation order of multiple subframes of the target frame image, thereby improving the display efficiency, improving the picture saturation and contrast of the liquid crystal panel, and reducing the picture color deviation and color separation.

[0147] Step 230: Based on the rotation sequence, determine the backlight control signal corresponding to the target frame image.

[0148] In an embodiment of the present application, after executing step 220 to obtain the rotation order of multiple subframes of the target frame image, step 230 is executed to determine the field sequence backlight brightness, field sequence backlight flickering duration, etc. corresponding to the multiple subframes based on the rotation order and the multiple subframes of the target frame image, thereby determining the backlight control signal corresponding to the target frame image based on the rotation order, the field sequence backlight brightness, field sequence backlight flickering duration, etc. corresponding to the multiple subframes.

[0149] Step 240: Based on the backlight control signal, perform backlight control on multiple field sequential backlights to display the target frame image on the liquid crystal panel.

[0150] In the present application, see Figure 8 As shown, when executing step 240, the following steps are specifically performed:

[0151] Step 2401: Send the backlight control signal to the liquid crystal panel to control the liquid crystal panel to switch multiple field sequential backlights based on the backlight control signal.

[0152] In an embodiment of the present application, after determining the backlight control signal corresponding to the target frame image, the backlight control module executes step 2401 to send the backlight control signal to the backlight driving module of the liquid crystal panel, so that the backlight driving module switches multiple field sequence backlights based on the backlight control signal.

[0153] Step 2402: The image data of each subframe of the target frame image is sent to the liquid crystal panel in sequence according to the rotation order, so as to control the liquid crystal panel to flip the liquid crystal molecules in the liquid crystal panel based on the image data of the target subframe after receiving the image data of the target subframe.

[0154] In an embodiment of the present application, when executing step 2402, the image control module sends the image data of each subframe of the target frame image to the pixel driving module of the liquid crystal panel in sequence according to the rotation order of multiple subframes of the target frame image, so that after receiving the image data of the sent target subframe, the pixel driving module controls the liquid crystal molecules in the liquid crystal panel to flip based on the image data of the target subframe, wherein the target subframe is any one of the subframes of the target frame image.

[0155] On the liquid crystal panel side, the pixel driving module of the liquid crystal panel receives the image data of each subframe of the target frame image in sequence according to the above-mentioned rotation order, wherein each time a subframe, i.e., the aforementioned target subframe, is received, the liquid crystal molecules in the liquid crystal panel are controlled to flip based on the image data of the target subframe; at the same time, the backlight driving module of the liquid crystal panel sequentially lights up the corresponding field sequence backlight based on the backlight control signal in the rotation order of multiple subframes of the target frame image, wherein after the liquid crystal molecules are flipped based on the image data of the target subframe, the field sequence backlight corresponding to the target subframe is lit, and is turned off after the duration reaches the lighting duration, thereby obtaining a field sequence display picture corresponding to the target subframe.

[0156] It should be noted that the above process in the embodiment of the present application can be executed by the main control chip of the display device, or by the collaborative cooperation between multiple modules in the display device. The embodiment of the present application does not make specific limitations. Among them, when the collaborative execution between multiple modules is adopted, the interaction between the modules can be completed through the bus, and can also be completed in any form, which is not specifically limited here.

[0157] Based on the same inventive concept, refer to Fig. 9 As shown, in an embodiment of the present application, a backlight control device for a field sequential display is provided, wherein the field sequential display includes a liquid crystal panel and a plurality of field sequential backlights, including:

[0158] A conversion module 910, configured to perform color conversion on an input target frame image to obtain subframes corresponding to the plurality of field sequential backlights;

[0159] The parsing module 920 is used to parse the multiple sub-frames respectively to obtain pixel information corresponding to the multiple sub-frames;

[0160] A determination module 930 is used to determine a rotation order of the multiple subframes based on pixel information corresponding to the multiple subframes, and determine a backlight control signal corresponding to the target frame image based on the rotation order, wherein the rotation order represents a switching order of the multiple field sequential backlights when displaying the target frame image;

[0161] The control module 940 is used to perform backlight control on the multiple field sequential backlights based on the backlight control signal to display the target frame image on the liquid crystal panel.

[0162] In a possible implementation, the determining module 930 is specifically configured to:

[0163] Based on a correspondence between a preset pixel relationship and a rotation order, obtaining the rotation order corresponding to a first pixel relationship, wherein the first pixel relationship is determined based on pixel information corresponding to the plurality of subframes; or

[0164] The rotation order is determined based on a second pixel relationship between multiple subframes of a reference frame image and the first pixel relationship, wherein the reference frame image includes at least one frame image before the target frame image, and the last frame image of the at least one frame image is adjacent to the target frame image, and the second pixel relationship is determined based on pixel information corresponding to multiple subframes of the reference frame image; or,

[0165] Arrange and combine multiple subframes of the target frame image to obtain at least two groups, and for any one of the at least two groups, determine an estimated value corresponding to the any one group based on pixel information corresponding to each subframe in the any one group; and determine the order of the subframes in the group corresponding to the smallest estimated value as the rotation order.

[0166] In a possible implementation, the determining module 930 is specifically configured to:

[0167] Based on the pixel information corresponding to each subframe in any one of the groups, determining the components of each of the two adjacent subframes, wherein the components include the liquid crystal flip change component and / or the target liquid crystal accumulation component;

[0168] The sum of the determined components is used as the estimated value corresponding to any one of the groups.

[0169] In a possible implementation, each component further includes a component from a reference subframe to a first subframe in any group, wherein the reference subframe is the last subframe of a previous frame image continuous with the target frame image.

[0170] In a possible implementation, the determining module 930 is specifically configured to:

[0171] Determining a grayscale change value between two adjacent subframes;

[0172] For any liquid crystal molecule in the liquid crystal panel, determining a flip response time of the any liquid crystal molecule based on an operating temperature of the any liquid crystal molecule and the grayscale change value;

[0173] If the flip response time of any of the liquid crystal molecules is greater than a preset value, the any of the liquid crystal molecules is determined to be a target liquid crystal molecule, and the target liquid crystal cumulative component is determined based on the total number of target liquid crystal molecules, wherein the preset value represents a baseline flip response time of the liquid crystal molecules of the liquid crystal panel.

[0174] In a possible implementation, the control module 940 is specifically configured to:

[0175] Sending the backlight control signal to the liquid crystal panel to control the liquid crystal panel to switch the plurality of field sequential backlights based on the backlight control signal;

[0176] The image data of each subframe of the target frame image is sent to the liquid crystal panel in sequence according to the rotation order, so as to control the liquid crystal panel to flip the liquid crystal molecules in the liquid crystal panel based on the image data of the target subframe after receiving the image data of the target subframe.

[0177] In a possible implementation manner, the pixel information includes part or all of target pixel quantity information, pixel value information, and pixel grayscale information.

[0178] Based on the same inventive concept, refer to Fig.10 As shown, an embodiment of the present application provides a display device, including:

[0179] Field sequential display 101;

[0180] Memory 102, used to store computer programs or instructions;

[0181] The processor 103 is used to execute the computer program or instructions in the memory 102 so that any one of the methods in the above embodiments is executed.

[0182] The processor 103 may include one or more central processing units (CPUs), or digital processing units, etc.

[0183] It should be noted that the specific connection medium between the memory 102, the processor 103 and the field sequential display 101 is not limited in the embodiment of the present application. Fig.10 In the embodiment, the memory 102, the processor 103 and the field sequential display 101 are connected via a bus 104. The connection between other components is only for illustrative purposes and is not intended to be limiting. The bus 104 can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Fig.10 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0184] Based on the same inventive concept, the embodiment of the present application provides a computer-readable storage medium. When the instructions in the storage medium are executed by a processor, the processor is enabled to execute any one of the methods in the above embodiments. Since the principle of solving the problem by the above computer-readable storage medium is similar to a backlight control method for a field sequential display, the implementation of the above computer-readable storage medium can refer to the implementation of the method, and the repeated parts will not be repeated.

[0185] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0186] The present application is described with reference to the flowchart and / or block diagram of the method, device (system), and computer program product according to the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the process and / or box in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the functions specified in one process or multiple processes in the flowchart and / or one box or multiple boxes in the block diagram.

[0187] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0188] These computer program instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0189] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A backlight control method for a field sequential display, wherein the field sequential display comprises a liquid crystal panel and a plurality of field sequential backlights, characterized in that: include: Performing color conversion on the input target frame image to obtain subframes corresponding to the plurality of field sequential backlights; Analyzing the multiple subframes respectively to obtain pixel information corresponding to the multiple subframes; Based on the pixel information corresponding to the multiple sub-frames, determining the rotation order of the multiple sub-frames, and based on the rotation order, determining the backlight control signal corresponding to the target frame image, wherein the rotation order represents the switching order of the multiple field sequential backlights when displaying the target frame image; Based on the backlight control signal, the plurality of field sequential backlights are backlight controlled to display the target frame image on the liquid crystal panel.

2. The method according to claim 1, characterized in that The determining, based on the pixel information corresponding to the multiple subframes, a rotation order corresponding to the multiple subframes includes: Based on a correspondence between a preset pixel relationship and a rotation order, obtaining the rotation order corresponding to a first pixel relationship, wherein the first pixel relationship is determined based on pixel information corresponding to the plurality of subframes; or The rotation order is determined based on a second pixel relationship between multiple subframes of a reference frame image and the first pixel relationship, wherein the reference frame image includes at least one frame image before the target frame image, and the last frame image of the at least one frame image is adjacent to the target frame image, and the second pixel relationship is determined based on pixel information corresponding to multiple subframes of the reference frame image; or, Arrange and combine multiple subframes of the target frame image to obtain at least two groups, and for any one of the at least two groups, determine an estimated value corresponding to the any one group based on pixel information corresponding to each subframe in the any one group; and determine the order of the subframes in the group corresponding to the smallest estimated value as the rotation order.

3. The method according to claim 2, characterized in that The determining, based on the pixel information corresponding to each subframe in the any group, the estimated value corresponding to the any group comprises: Based on the pixel information corresponding to each subframe in any one of the groups, determining the components of each of the two adjacent subframes, wherein the components include the liquid crystal flip change component and / or the target liquid crystal accumulation component; The sum of the determined components is used as the estimated value corresponding to any one of the groups.

4. The method according to claim 3, characterized in that Each of the components also includes a component from a reference subframe to a first subframe in any group, wherein the reference subframe is the last subframe of a previous frame image continuous with the target frame image.

5. The method according to claim 3, characterized in that Determining the target liquid crystal cumulative component of any two adjacent subframes includes: Determining a grayscale change value between two adjacent subframes; For any liquid crystal molecule in the liquid crystal panel, determining a flip response time of the any liquid crystal molecule based on an operating temperature of the any liquid crystal molecule and the grayscale change value; If the flip response time of any of the liquid crystal molecules is greater than a preset value, the any of the liquid crystal molecules is determined to be a target liquid crystal molecule, and the target liquid crystal cumulative component is determined based on the total number of target liquid crystal molecules, wherein the preset value represents a baseline flip response time of the liquid crystal molecules of the liquid crystal panel.

6. The method according to any one of claims 1 to 5, characterized in that: The performing backlight control on the plurality of field sequential backlights based on the backlight control signal comprises: Sending the backlight control signal to the liquid crystal panel to control the liquid crystal panel to switch the plurality of field sequential backlights based on the backlight control signal; The image data of each subframe of the target frame image is sent to the liquid crystal panel in sequence according to the rotation order, so as to control the liquid crystal panel to flip the liquid crystal molecules in the liquid crystal panel based on the image data of the target subframe after receiving the image data of the target subframe.

7. The method according to any one of claims 1 to 5, characterized in that: The pixel information includes part or all of target pixel quantity information, pixel value information and pixel grayscale information.

8. A backlight control device for a field sequential display, the field sequential display comprising a liquid crystal panel and a plurality of field sequential backlights, characterized in that: include: A conversion module, used for performing color conversion on the input target frame image to obtain subframes corresponding to the plurality of field sequential backlights; An analysis module, used to analyze the multiple sub-frames respectively to obtain pixel information corresponding to the multiple sub-frames; A determination module, configured to determine a rotation order of the plurality of subframes based on pixel information corresponding to the plurality of subframes, and determine a backlight control signal corresponding to the target frame image based on the rotation order, wherein the rotation order represents a switching order of the plurality of field sequential backlights when displaying the target frame image; A control module is used to perform backlight control on the multiple field sequential backlights based on the backlight control signal to display the target frame image on the liquid crystal panel.

9. A display device, characterized in that: include: Field sequential display; Memory, used to store computer programs or instructions; A processor is used to execute the computer program or instructions in the memory so that the method according to any one of claims 1 to 7 is executed.

10. A computer-readable storage medium, characterized in that: When the instructions in the storage medium are executed by a processor, the processor is enabled to execute the method according to any one of claims 1 to 7.

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