A backlight control method, device, equipment and medium for field sequential display

Abstract

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, which is used to solve the problems of ghosting, display blur, color separation, etc. in traditional field sequential displays. The method is as follows: color conversion is performed on an input target frame image to obtain subframes corresponding to multiple field sequential backlights, and the multiple subframes are analyzed respectively to obtain pixel information corresponding to the multiple subframes; then, based on the pixel information corresponding to the multiple subframes, a rotation order of the multiple subframes is determined, and then based on the rotation order, a backlight control signal corresponding to the target frame image is determined, and based on the backlight control signal, backlight control is performed on the multiple field sequential backlights to display the target frame image in a liquid crystal panel; in this way, the rotation order between the subframes is dynamically determined through the pixel information corresponding to each subframe, the display efficiency between the subframes of the target frame image is optimized, and the picture 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 (LCD) technology, field-sequential LCD (FSD) is booming as a new display technology that differs from traditional methods. Compared to traditional LCD technology, FSD uses a field-sequential backlight that illuminates different colors in a timed sequence. This, combined with the color effects displayed by the LCD panel, eliminates the color filter used in traditional displays to save costs. It also eliminates the absorption of backlight by the filter, reducing power consumption. This significantly reduces energy loss and improves color contrast. As a result, FSDs are gaining increasing popularity in the industry.

[0003] However, compared to 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, and their response is not instantaneous. A high refresh rate requires the liquid crystal molecules to respond quickly 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 displays during use. In addition, because current field sequential displays light 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, apparatus, device, and medium for a field sequential display, which optimizes inter-frame display efficiency to improve the image saturation and contrast of a liquid crystal panel and reduce or eliminate problems such as image color cast and color separation.

[0005] The specific technical solutions provided in 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 multiple field sequential backlights;

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

[0009] Determining a rotation order of the multiple subframes based on pixel information corresponding to the multiple subframes, and determining 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;

[0010] Based on the backlight control signal, backlight control is performed on the multiple field sequential backlights 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 used. By parsing multiple subframes, the corresponding pixel information of each subframe is obtained. Then, the rotation order between the subframes is dynamically determined based on 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 image saturation and contrast of the liquid crystal panel and reducing or eliminating problems such as image color deviation and color separation.

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

[0013] Based on a preset correspondence between a 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 and the first pixel relationship between multiple subframes of a reference frame image, wherein the reference frame image includes at least one frame image located before the target frame image, and a 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 the 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, determining the estimated value corresponding to any group based on pixel information corresponding to each subframe in any group includes:

[0018] Determining components of two adjacent subframes based on pixel information corresponding to each subframe in any one of the groups, wherein the components include a liquid crystal flip change component and / or a 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 the 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 LCD 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 the 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, then 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 the 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, which can more accurately determine the order of backlight and data transmission, so that the total number of liquid crystal molecules that are not flipped into 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, the performing backlight control on the multiple 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 multiple field sequential backlights based on the backlight control signal;

[0030] According to the rotation order, the image data of each subframe of the target frame image is sent to the liquid crystal panel in turn, 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 problems caused by the flip response time of the liquid crystal molecules are 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, which 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, 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, configured to perform color conversion on an input target frame image to obtain subframes corresponding to the plurality of field sequential backlights;

[0036] An analysis module, configured to analyze the plurality of subframes respectively to obtain pixel information corresponding to the plurality of subframes;

[0037] a determining 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 configured to perform backlight control on the plurality of field sequential backlights based on the backlight control signal, so as to display the target frame image on the liquid crystal panel.

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

[0040] Based on a preset correspondence between a 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 and the first pixel relationship between multiple subframes of a reference frame image, wherein the reference frame image includes at least one frame image located before the target frame image, and a 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 the 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, the determining module is specifically configured to:

[0044] Determining components of two adjacent subframes based on pixel information corresponding to each subframe in any one of the groups, wherein the components include a liquid crystal flip change component and / or a 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 the 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, the determining module is specifically configured to:

[0048] Determining a grayscale change value between the 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, then 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 the baseline flip response time of the liquid crystal molecules of the liquid crystal panel.

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

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

[0053] According to the rotation order, the image data of each subframe of the target frame image is sent to the liquid crystal panel in turn, 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, 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 configured to execute the computer program or instructions in the memory so that the method according to any one of the first aspects described above is performed.

[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 one of the methods described in the first aspect above.

[0060] In addition, the technical effects brought about by any implementation method 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 Schematic diagram of a flow chart of a backlight control method for a field sequential display according to an embodiment of the present application;

[0063] Figure 3 This is a schematic diagram of the structure of a field sequential display according to 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 as follows: Figure 1 ;

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

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

[0067] Figure 5 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 for determining a target liquid crystal cumulative component of each of two adjacent subframes according to 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] Figure 9 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] Figure 10 Schematic diagram of the physical structure of the display device in an embodiment of the present application. DETAILED DESCRIPTION

[0073] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts 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 this application and the accompanying 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 terms used in this manner are interchangeable where appropriate, such that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0075] The following is a brief introduction to the design concept of the embodiments of this 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 for a field sequential display.

[0077] Color field sequential display is one of the methods for display devices to achieve color display. Its principle is: in field sequential display, a frame image to be displayed is divided into multiple monochrome color component images according to color (hereinafter referred to as subframes in the embodiments of this application), and the display time of one frame is divided into multiple sub-field sequences corresponding to the subframes one by one. The subframes are displayed in the corresponding sub-field sequences. Multiple subframes are switched rapidly within the display time of one frame, and 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. 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 realize 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, while traditional monitors display images at 60Hz, field-sequential displays require 180Hz. Liquid crystal molecules are voltage-driven flip devices, and their response is not instantaneous. A high refresh rate requires a sufficiently fast response speed, but this speed is dependent on the molecular material used, making it difficult to upgrade. Consequently, field-sequential displays are prone to issues such as smearing and blurred displays. Furthermore, because current field-sequential displays sequentially illuminate different backlight colors, creating various colors through the human eye's integration effect, the LCD panel display is prone to color separation.

[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 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 sub-frames corresponding to multiple field sequential backlights of the field sequential display, and the multiple sub-frames are analyzed separately to obtain pixel information corresponding to each of the multiple sub-frames; then, based on the pixel information corresponding to the multiple sub-frames, the rotation order of the multiple sub-frames 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 on the liquid crystal panel. In this way, the rotation order between the sub-frames is dynamically determined based on the pixel information corresponding to each sub-frame, 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 sub-frames of the target frame image, thereby improving the picture saturation and contrast of the liquid crystal panel and reducing the picture color cast and color separation.

[0081] The following describes an application scenario of an optional backlight control method for a field sequential display provided in an embodiment of the present application with reference to 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 display 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 methods of the present application are further described in detail with reference to 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 can be combined with each other if there is no conflict.

[0086] See Figure 2As shown, 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 multiple field sequential backlights. 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 embodiments of this 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, multiple 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. The color conversion module performs color conversion on the target frame image and converts the target frame image into multiple sub-frames. Each sub-frame corresponds to a field sequential backlight. The multiple field sequential backlights can be red, green, and blue backlights, or backlights of other colors, such as red, green, blue, cyan, etc., or 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, where "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 sub-frame.

[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 processing or other pre-processing, that is, image data of different precisions can use 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 accuracy 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, see Figure 3As shown, after executing step 200 to obtain multiple sub-frames of the target frame image, the color conversion module sends the multiple sub-frames to the backlight control module and the image control module respectively; when executing step 210, for any sub-frame among the multiple sub-frames, the backlight control module parses the image data of the sub-frame, that is, parses the pixel value of each pixel of the sub-frame to obtain pixel information corresponding to the sub-frame, wherein the pixel information includes part or all of the target pixel number information, pixel value information and pixel grayscale information.

[0095] In a specific implementation, the backlight control module can obtain the target pixel number information corresponding to the subframe in the following manner: determine the number of target pixels with pixel values ​​greater than a threshold in each pixel of the subframe as the target pixel number 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 average, 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 value of each pixel in the subframe as the pixel grayscale information corresponding to the subframe, wherein the second value is any one of the average, 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 the RGB encoding format, such as the pixel value (1, 2, 3), 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 embodiments of the present application, after obtaining pixel information corresponding to each of the multiple subframes, the rotation order of the multiple subframes can be determined in various ways based on the pixel information corresponding to the multiple subframes. Specifically, a preset mode or a mapping mode can be used. The following embodiments of the present application provide three methods for determining the rotation order of the multiple subframes.

[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 performing the following steps:

[0103] Step 2201 ′: determining a first pixel relationship between the plurality of pixel information based on the pixel information corresponding to the plurality of subframes.

[0104] In the embodiment of the present application, when executing step 2201', the backlight control module determines a first pixel relationship between multiple pixel information based on the pixel information corresponding to multiple subframes of the target frame image, wherein the first pixel relationship can be a relationship between 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 color converted to obtain three sub-frames, which are recorded as sub-frame 1, sub-frame 2, and sub-frame 3. Assume that the number of target pixels whose pixel values ​​in these three sub-frames are greater than the threshold is 35 (sub-frame 1), 20 (sub-frame 2), and 58 (sub-frame 3). Then the target pixel quantity information corresponding to these three sub-frames is 35 (sub-frame 1), 20 (sub-frame 2), and 58 (sub-frame 3); then, the first pixel relationship between the three candidate pixel information can be 58 (sub-frame 3) > 35 (sub-frame 1) > 20 (sub-frame 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 above-mentioned 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 here.

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

[0109] In some feasible embodiments, when a preset mode is used, after the backlight control module executes step 200 to obtain the subframes of the target frame image corresponding to the multiple field-sequential backlights, it can also directly determine the rotation order of the multiple subframes of the input preset number of target frame images to be the same rotation order. For example, if the preset mode is preset to use the same rotation order for every three target frame images, the specific rotation order to be used can be selected from a 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 performing the following steps:

[0112] Step 2201 ′: determining a first pixel relationship between the plurality of pixel information based on the pixel information corresponding to the plurality of subframes.

[0113] Step 2202": Determine the rotation order based on a second pixel relationship and a first pixel relationship between multiple subframes of a 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 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 the 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 is reduced during the display process of the liquid crystal panel from the reference frame image to the target frame image. 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 performing 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 the target frame image at time t+1 and the reference frame image at time t, and the pixel information is target pixel number 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 t-th frame is red, green, blue; and the rotation order of the multiple subframes of the t+1-th 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 number 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 can transmit the image data of each subframe in sequence according to the target pixel number information from least to most, and control 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 two consecutive 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 also decrease, 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 performing 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 one 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 one of the 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: Determine the components of each of two adjacent subframes based on the pixel information corresponding to each subframe in the group, 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 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 based on the pixel information corresponding to each subframe in the group, wherein the components include the liquid crystal flip change component and / or the target liquid crystal accumulation component.

[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 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 of 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 flipping from 255 grayscale to 128 grayscale and when flipping from 255 grayscale to 200 grayscale; due to the panel arrangement, the operating temperatures of liquid crystal molecules in different areas are different, and at different temperatures, the response characteristics of liquid crystal molecules will also change; and 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 sub-frames of the target frame image, more reference factors are incorporated, and a backlight and data sending order can be more accurately determined, so that the total number of liquid crystal molecules that are not flipped into 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 operating temperature temp of the liquid crystal molecules 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 molecule of the liquid crystal panel, that is, the time from sending the image data to the field sequential backlight lighting, 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 calculation based on 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 the 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, the liquid crystal molecule fails to flip to the target position of the second subframe within the time from the liquid crystal panel sending the image data to the field sequential backlight lighting; 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 in 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 a component 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. In this way, when determining the rotation order of multiple subframes of the target frame image, the component from the last subframe of the previous frame image continuous with the target frame image to the first subframe in the group is included, so that the subsequent rotation order can ensure that the number of liquid crystal molecules participating 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 also 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 the 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 the subframes in the group corresponding to the smallest estimated value as the rotation order of the multiple subframes of the target frame image, thereby improving display efficiency, improving the image saturation and contrast of the liquid crystal panel, and reducing image color cast and color separation.

[0147] Step 230: Determine a backlight control signal corresponding to the target frame image based on the rotation sequence.

[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 a plurality of field sequential backlights to display the target frame image on the liquid crystal panel.

[0150] In the embodiments of this 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: According to the rotation order, the image data of each subframe of the target frame image is sent to the liquid crystal panel in turn 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 lights up the corresponding field sequence backlight in sequence according to the rotation order of multiple subframes of the target frame image based on the backlight control signal, 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 it can be executed 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 adopting the collaborative execution between multiple modules, the interaction between the modules can be completed through the bus, or it can be completed in any form, which is not specifically limited here.

[0157] Based on the same inventive concept, see Figure 9 As shown, 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 multiple field sequential backlights, including:

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

[0159] The parsing module 920 is configured to parse the plurality of subframes to obtain pixel information corresponding to the plurality of subframes;

[0160] a determination module 930 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;

[0161] The control module 940 is configured to perform backlight control on the plurality of field sequential backlights based on the backlight control signal, so as 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 preset correspondence between a 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 and the first pixel relationship between multiple subframes of a reference frame image, wherein the reference frame image includes at least one frame image located before the target frame image, and a 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 the 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] Determining components of two adjacent subframes based on pixel information corresponding to each subframe in any one of the groups, wherein the components include a liquid crystal flip change component and / or a 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 the 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 the 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, then 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 the 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 multiple field sequential backlights based on the backlight control signal;

[0176] According to the rotation order, the image data of each subframe of the target frame image is sent to the liquid crystal panel in turn, 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, 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, see Figure 10 As shown, an embodiment of the present application provides a display device, including:

[0179] Field sequential display 101;

[0180] Memory 102, for storing computer programs or instructions;

[0181] The processor 103 is configured 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. Figure 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 illustration, Figure 10 Only one thick line is used in the diagram, but this does not mean that there is only one bus or one type of bus.

[0184] Based on the same inventive concept, embodiments of the present application provide a computer-readable storage medium. When instructions in the storage medium are executed by a processor, the processor is enabled to perform any of the methods described in the aforementioned embodiments. Because the principles underlying the problem solved by the aforementioned computer-readable storage medium are similar to those of a backlight control method for a field sequential display, the implementation of the aforementioned computer-readable storage medium can be referenced to the implementation of the method, and any repetitions will not be repeated.

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

[0186] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the present application. It should be understood that each flow and / or box in the flow chart and / or block diagram, as well as the combination of the flow chart and / or box in the flow chart 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 flow chart or multiple flows 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 operate 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 may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is 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 multiple field sequential backlights; Analyzing the multiple subframes respectively to obtain pixel information corresponding to the multiple subframes; Determining a rotation order of the multiple subframes based on pixel information corresponding to the multiple subframes, and determining 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; Based on the backlight control signal, performing backlight control on the plurality of field sequential backlights to display the target frame image on the liquid crystal panel; The determining, based on the pixel information corresponding to the multiple subframes, a rotation order corresponding to the multiple subframes includes: Based on a preset correspondence between a 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 and the first pixel relationship between multiple subframes of a reference frame image, wherein the reference frame image includes at least one frame image located before the target frame image, and a 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 the 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.

2. The method according to claim 1, wherein The determining, based on pixel information corresponding to each subframe in the any group, an estimated value corresponding to the any group includes: Determining components of two adjacent subframes based on pixel information corresponding to each subframe in any one of the groups, wherein the components include a liquid crystal flip change component and / or a target liquid crystal accumulation component; The sum of the determined components is used as the estimated value corresponding to any one of the groups.

3. The method according to claim 2, wherein Each component also includes a component from a reference subframe to the first subframe in any group, wherein the reference subframe is the last subframe of a previous frame image continuous with the target frame image.

4. The method according to claim 2, wherein Determining the target liquid crystal cumulative component of any two adjacent subframes includes: Determining a grayscale change value between the 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, then 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 the baseline flip response time of the liquid crystal molecules of the liquid crystal panel.

5. The method according to any one of claims 1 to 4, characterized in that The performing backlight control on the plurality of field sequential backlights based on the backlight control signal includes: Sending the backlight control signal to the liquid crystal panel to control the liquid crystal panel to switch the multiple field sequential backlights based on the backlight control signal; According to the rotation order, the image data of each subframe of the target frame image is sent to the liquid crystal panel in turn, 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.

6. The method according to any one of claims 1 to 4, characterized in that The pixel information includes part or all of target pixel quantity information, pixel value information, and pixel grayscale information.

7. A backlight control device 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: a conversion module, configured to perform color conversion on an input target frame image to obtain subframes corresponding to the plurality of field sequential backlights; An analysis module, configured to analyze the plurality of subframes respectively to obtain pixel information corresponding to the plurality of subframes; a determining 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, configured to perform backlight control on the plurality of field sequential backlights based on the backlight control signal, so as to display the target frame image on the liquid crystal panel; Wherein, when the determining module determines the rotation order corresponding to the multiple subframes based on the pixel information corresponding to the multiple subframes, it is specifically used to: Based on a preset correspondence between a 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 and the first pixel relationship between multiple subframes of a reference frame image, wherein the reference frame image includes at least one frame image located before the target frame image, and a 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 the 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.

8. A display device, characterized in that: include: Field Sequential Display; Memory, used to store computer programs or instructions; A processor is configured to execute the computer program or instructions in the memory so that the method according to any one of claims 1 to 6 is performed.

9. 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 perform the method according to any one of claims 1 to 6.

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