Liquid crystal display device based on field sequential display and color image display method thereof

Abstract

The embodiment of the invention belongs to the technology of display equipment, and provides liquid crystal display equipment based on field sequential display and a color image display method thereof.The liquid crystal display equipment comprises a liquid crystal display screen, a backlight module and a processor, the liquid crystal display screen is divided into a plurality of backlight partitions used for displaying images, and the backlight module is used for emitting backlight; the backlight is used for adjusting the backlight brightness of the display image corresponding to the four-field sequence. And the processor is used for acquiring RGBW image pixel data of the image in the backlight partition, and acquiring backlight brightness data corresponding to the RGBW color based on a preset backlight extraction algorithm according to the RGBW image pixel data. And the processor is also used for determining image compensation pixel data corresponding to the RGBW color based on a preset pixel compensation algorithm and the backlight brightness data corresponding to the RGBW color. And the liquid crystal display screen is used for displaying a color image according to the image compensation pixel data corresponding to the RGBW color. The power consumption of the display equipment is reduced, and the user experience is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to display device technology, and more specifically, to a liquid crystal display device based on field sequential display and a color image display method thereof. Background Art

[0002] With the rapid development of display technology, users have also put forward higher requirements for LCD devices. The lower the energy consumption of LCD devices, the better the user experience.

[0003] In recent years, as LCD displays have moved toward larger sizes and ultra-high definition, their high power consumption has become increasingly prominent. Taking LCD TVs as an example, conventional technologies typically utilize dimming technology to automatically adjust the brightness of the LCD screen to the ambient light, thereby reducing power consumption.

[0004] However, the above-mentioned method of reducing the power consumption of the liquid crystal display device is not effective enough, and the power consumption is still relatively high. Summary of the Invention

[0005] The embodiments of the present application provide a liquid crystal display device based on field sequential display and a color image display method thereof, which can be used to solve the technical problem in the related art that the effect of reducing the power consumption of liquid crystal display devices is not obvious enough and the power consumption is still high.

[0006] In a first aspect, an embodiment of the present application provides a liquid crystal display device based on field sequential display, the liquid crystal display device comprising:

[0007] A liquid crystal display screen, the liquid crystal display screen being divided into a plurality of backlight partitions, the liquid crystal display screen being configured to: display an image;

[0008] A backlight module connected to the liquid crystal display screen, the backlight module being configured to: emit backlight, the backlight being used to adjust the backlight brightness of the display image corresponding to a four-field sequential display mode, the liquid crystal display device performing color display based on a four-field sequential display mode;

[0009] A processor connected to the liquid crystal display and the backlight module respectively, wherein the processor is configured to:

[0010] Acquire RGBW image pixel data of the image in the backlight partition, where R color, G color, B color, and W color correspond one-to-one to the four field sequences;

[0011] According to the RGBW image pixel data, based on a preset backlight extraction algorithm, obtaining backlight brightness data corresponding to R color, G color, B color and W color;

[0012] Determine image compensation pixel data corresponding to the R color, the G color, the B color, and the W color based on a preset pixel compensation algorithm and the backlight brightness data corresponding to the R color, the G color, the B color, and the W color;

[0013] The liquid crystal display is further configured to display a color image according to the image compensation pixel data corresponding to the R color, the G color, the B color, and the W color.

[0014] In the present application, the liquid crystal display device performs color display based on a four-field sequential display mode. The processor obtains the backlight brightness data corresponding to the RGBW colors based on the RGBW image pixel data of the image in the acquired backlight partition and a preset backlight extraction algorithm, and then determines the image compensation pixel data corresponding to the RGBW colors based on the preset pixel compensation algorithm and the corresponding backlight brightness data, and finally displays a color image based on the image compensation pixel data. Among them, R, G, B and W correspond one to one with the four-field sequence. The present application determines the image compensation pixel data corresponding to RGBW based on the RGBW backlight brightness data, and displays the color image in the corresponding field sequence based on the image compensation pixel data corresponding to RGBW. This field sequential display mode significantly reduces the power consumption of the liquid crystal display device and improves the user experience.

[0015] In some embodiments of the present application, when the processor is configured to obtain RGBW image pixel data of an image in a backlight subarea, the processor specifically includes:

[0016] Obtaining RGB image pixel data of an image in a backlight partition;

[0017] The RGB image pixel data is converted into RGBW image pixel data to obtain the RGBW image pixel data of the image in the backlight subarea.

[0018] In this application, the image in the backlight partition is usually RGB image pixel data. The processor converts the RGB image pixel data into RGBW image pixel data and displays the image color through a four-field sequence, which is beneficial to improving the color display effect of the image.

[0019] In some embodiments of the present application, when the processor is configured to obtain backlight brightness data corresponding to R color, G color, B color, and W color based on the RGBW image pixel data and a preset backlight extraction algorithm, the process specifically includes:

[0020] Acquire a plurality of image pixel data corresponding to R color, a plurality of image pixel data corresponding to G color, and a plurality of image pixel data corresponding to B color in the backlight partition;

[0021] Determining backlight brightness data corresponding to the R color according to upper limits of a plurality of image pixel data corresponding to the R color;

[0022] determining backlight brightness data corresponding to the G color according to upper limits of a plurality of image pixel data corresponding to the G color;

[0023] Determining backlight brightness data corresponding to the color B according to upper limits of a plurality of image pixel data corresponding to the color B;

[0024] The backlight brightness data corresponding to the W color is determined according to the lower limit values of the plurality of image pixel data corresponding to the R color, the lower limit values of the plurality of image pixel data corresponding to the G color, and the lower limit values of the plurality of image pixel data corresponding to the B color.

[0025] In the present application, the processor determines the backlight brightness data corresponding to RGB based on the upper limit values of the multiple image pixel data corresponding to RGB in the backlight partition, and determines the backlight brightness data corresponding to W based on the lower limit values of the multiple image pixel data corresponding to RGB, thereby improving the accuracy and convenience of the obtained backlight brightness data corresponding to RGBW.

[0026] In some embodiments of the present application, when the processor is configured to determine the backlight brightness data corresponding to the W color based on the lower limit value of the plurality of image pixel data corresponding to the R color, the lower limit value of the plurality of image pixel data corresponding to the G color, and the lower limit value of the plurality of image pixel data corresponding to the B color, the processor specifically includes:

[0027] determining an upper limit value of the image pixel data from the lower limit values of the plurality of image pixel data corresponding to the R color, the lower limit values of the plurality of image pixel data corresponding to the G color, and the lower limit values of the plurality of image pixel data corresponding to the B color;

[0028] The backlight brightness data corresponding to the W color is determined according to the upper limit value.

[0029] In the present application, the processor determines an upper limit value from the lower limit values of multiple image pixel data corresponding to RGBW, and then determines the backlight brightness data corresponding to W according to the upper limit value, thereby improving the accuracy of the obtained backlight brightness data corresponding to W.

[0030] In some embodiments of the present application, when the processor is configured to determine the image compensation pixel data corresponding to the R color, the G color, the B color, and the W color based on a preset pixel compensation algorithm and the backlight brightness data corresponding to the R color, the G color, the B color, and the W color, the process specifically includes:

[0031] Obtain the transmittance corresponding to the R color, the transmittance corresponding to the G color, the transmittance corresponding to the B color, and the transmittance corresponding to the W color;

[0032] Determine the image brightness corresponding to the R color, the image brightness corresponding to the G color, the image brightness corresponding to the B color, and the image brightness corresponding to the W color according to the backlight brightness data and transmittance corresponding to the R color, the G color, the B color, and the W color;

[0033] Determining image compensation pixel data corresponding to the R color according to the image brightness corresponding to the R color and the transmittance corresponding to the R color;

[0034] Determining image compensation pixel data corresponding to the G color according to the image brightness corresponding to the G color and the transmittance corresponding to the G color;

[0035] Determining image compensation pixel data corresponding to the B color according to the image brightness corresponding to the B color and the transmittance corresponding to the B color;

[0036] The image compensation pixel data corresponding to the W color is determined according to the image brightness corresponding to the W color and the transmittance corresponding to the W color.

[0037] In the present application, the processor determines the image compensation pixel data corresponding to RGBW according to the image brightness corresponding to RGBW and the transmittance corresponding to RGBW, thereby improving the efficiency and accuracy of the obtained image compensation pixel data.

[0038] In some embodiments of the present application, when the processor is configured to determine the image brightness corresponding to the R color, the image brightness corresponding to the G color, the image brightness corresponding to the B color, and the image brightness corresponding to the W color based on the backlight brightness data corresponding to the R color, the G color, the B color, and the W color, the processing specifically includes:

[0039] determining the image brightness corresponding to the R color according to the backlight brightness data corresponding to the R color, the backlight brightness data corresponding to the W color, and the transmittance corresponding to the R color;

[0040] determining the image brightness corresponding to the G color according to the backlight brightness data corresponding to the G color, the backlight brightness data corresponding to the W color, and the transmittance corresponding to the G color;

[0041] Determine the image brightness corresponding to the B color according to the backlight brightness data corresponding to the B color, the backlight brightness data corresponding to the W color, and the transmittance corresponding to the B color;

[0042] The image brightness corresponding to the W color is determined according to the backlight brightness data corresponding to the W color and the transmittance corresponding to the W color.

[0043] In the present application, the processor determines the image brightness corresponding to RGBW based on the backlight brightness data and the corresponding transmittance corresponding to RGBW, thereby improving the accuracy of the obtained image brightness.

[0044] In some embodiments of the present application, when the liquid crystal display is configured to display a color image based on the image compensation pixel data corresponding to the R color, the G color, the B color, and the W color, the liquid crystal display specifically includes:

[0045] Compensating pixel data of the image corresponding to the R color to generate a sub-image corresponding to the R color;

[0046] Compensating pixel data of the image corresponding to the G color to generate a sub-image corresponding to the G color;

[0047] Compensating pixel data of the image corresponding to the color B to generate a sub-image corresponding to the color B;

[0048] Compensating pixel data of the image corresponding to the color W to generate a sub-image corresponding to the color W;

[0049] The color image is displayed according to the sub-image corresponding to the R color, the sub-image corresponding to the G color, the sub-image corresponding to the B color, and the sub-image corresponding to the W color.

[0050] In this application, the LCD screen compensates pixel data according to the image corresponding to RGBW, generates corresponding sub-images, and then generates a color image according to the sub-images corresponding to RGBW, so that the displayed color image is clearer and more saturated, thereby improving the user's visual experience.

[0051] In a second aspect, the present application further provides a color image display method of a liquid crystal display device based on field sequential display, the method comprising:

[0052] The processor obtains RGBW image pixel data of the image in the backlight partition;

[0053] The processor obtains backlight brightness data corresponding to R color, G color, B color, and W color based on the RGBW image pixel data and a preset backlight extraction algorithm;

[0054] The processor determines image compensation pixel data corresponding to the R color, the G color, the B color, and the W color based on a preset pixel compensation algorithm and the backlight brightness data corresponding to the R color, the G color, the B color, and the W color;

[0055] The liquid crystal display screen displays a color image according to the image compensation pixel data corresponding to the R color, the G color, the B color, and the W color.

[0056] In the present application, the liquid crystal display device performs color display based on a four-field sequential display mode. The processor obtains the backlight brightness data corresponding to the RGBW colors based on the RGBW image pixel data of the image in the acquired backlight partition and a preset backlight extraction algorithm, and then determines the image compensation pixel data corresponding to the RGBW colors based on the preset pixel compensation algorithm and the corresponding backlight brightness data, and finally displays a color image based on the image compensation pixel data. Among them, R, G, B, and W correspond one to one with the four-field sequence. The method of the present application determines the image compensation pixel data corresponding to RGBW based on the RGBW backlight brightness data, and displays the color image in the corresponding field sequence based on the image compensation pixel data corresponding to RGBW. This field sequential display mode significantly reduces the power consumption of the liquid crystal display device and improves the user experience.

[0057] In a third aspect, an embodiment of the present application provides a computer-readable storage medium having computer execution instructions stored thereon. When the computer execution instructions are executed by a processor, the color image display method of the liquid crystal display device based on field sequential display described in the second aspect is implemented.

[0058] The present application provides a computer-readable storage medium, which provides storage conditions for executing a color image display method of a liquid crystal display device based on field sequential display.

[0059] In a fourth aspect, an embodiment of the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the color image display method of a liquid crystal display device based on field sequential display as described in the second aspect.

[0060] The present application provides a computer program product that provides an operating program for executing a color image display method of a liquid crystal display device based on field sequential display. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] In order to more clearly illustrate the implementation methods in the embodiments of the present application or related technologies, the following is a brief introduction to the drawings required for use in the embodiments or related technology descriptions. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0062] Figure 1 A schematic diagram of the hardware configuration of a liquid crystal display device provided in some embodiments of the present application;

[0063] Figure 2A schematic flow chart of a color image display method of a liquid crystal display device based on field sequential display provided in some embodiments of the present application;

[0064] Figure 3A A schematic diagram of backlight partitioning provided in some embodiments of the present application;

[0065] Figure 3B A schematic diagram of another backlight partition provided in some embodiments of the present application;

[0066] Figure 4 A flowchart of a method for obtaining backlight brightness data corresponding to RGBW colors provided in some embodiments of the present application;

[0067] Figure 5 A flowchart of a method for determining backlight brightness data corresponding to color W provided in some embodiments of the present application;

[0068] Figure 6 A flowchart of a method for determining image compensation pixel data provided by some embodiments of the present application;

[0069] Figure 7 A flowchart of a method for determining image brightness provided in some embodiments of the present application;

[0070] Figure 8 A schematic diagram of a color image display of a liquid crystal display device provided in some embodiments of the present application. DETAILED DESCRIPTION

[0071] In order to make the purpose, implementation mode and advantages of the present application clearer, the exemplary implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0072] It should be noted that the brief descriptions of terms in this application are only for the purpose of facilitating the understanding of the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their ordinary and usual meanings.

[0073] In addition, the terms "comprises" and "comprising" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to those components expressly listed but may include other components not expressly listed or inherent to such product or device.

[0074] In the specification and claims of this application and the drawings, the terms "first," "second," and the like are used to distinguish similar or similar objects or entities and are not necessarily intended to limit a particular order or precedence, unless otherwise indicated. It should be understood that the terms used in this manner are interchangeable where appropriate, for example, enabling implementation in an order other than that shown or described in the drawings or descriptions of the embodiments of this application.

[0075] With the rapid development of display technology, users have also put forward higher requirements for liquid crystal display devices. In this application, the liquid crystal display device takes LCD TV as an example. While LCD TV is developing towards large size and ultra-high definition, its high power consumption problem is becoming increasingly obvious.

[0076] In the related art, in order to reduce the high power consumption of LCD TVs, the dimming technology of the LCD screen is usually used to allow it to automatically adjust according to the brightness of the environment. However, the effect of reducing power consumption in this way is not obvious, and the user experience is poor.

[0077] Therefore, in response to the above-mentioned technical problems in the prior art, the inventors discovered during the research process that when liquid crystal display devices are performing color display, power consumption can be significantly reduced by increasing the transmittance of the liquid crystal panel and using regional dynamic dimming technology. The field sequential color liquid crystal display technology does not have the filtering effect of the CF color film, so the transmittance of its liquid crystal panel can be increased to 3 times compared with that with the CF color film, and it itself has advantages such as low power consumption. Therefore, the field sequential color liquid crystal display technology can be used for color display in this application. In addition, the use of regional backlight adjustment technology can design the color gamut and brightness as needed, while reducing power consumption, making the color saturation of the picture higher. Based on this, the present application proposes a liquid crystal display device, a color image display method, a medium and a product for a liquid crystal display device.

[0078] To facilitate understanding of this application, the following briefly describes the field sequential color liquid crystal display technology:

[0079] Field-sequential LCDs (FSEs) are a display technology that improves upon traditional LCDs. Their greatest strength lies in their drive method. While traditional LCDs use a progressive drive method, scanning and displaying rows one by one, FSEs employ a field-sequential drive method, driving pixels according to their RGBW color groups. This reduces energy consumption while maintaining high brightness, resulting in greater energy conservation and environmental protection.

[0080] In field sequential display, a frame of image to be displayed is divided into multiple monochrome color component images, namely RGBW, according to color, and the display time of one frame is divided into multiple sub-field sequences corresponding to the color component images RGBW. The color component images are displayed in the corresponding sub-field sequences. During the display time of one frame, the multiple RGBW color component images are quickly switched, and the visual persistence effect of the human eye is used to achieve color superposition in time, thereby realizing color display.

[0081] In the application scenario of the present application, the liquid crystal display device can be a smart TV with a liquid crystal display screen, a laser projection device, a monitor, an electronic bulletin board, an electronic table, a shopping mall navigation machine, etc.

[0082] It is understood that the liquid crystal display devices proposed in this application include but are not limited to the above devices, and the above devices are not intended to limit this application. In addition, this application does not limit the type, size, specifications, etc. of the specific liquid crystal display device.

[0083] The following specific embodiments describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0084] Figure 1 A hardware configuration diagram of a liquid crystal display device provided in some embodiments of the present application is shown in FIG. Figure 1 As shown, the liquid crystal display device includes: a liquid crystal display screen 101, a backlight module 102, a processor 103, a driver board 104, a power board 105, a high-voltage board 106, a key control board 107 and an audio and video signal input interface 108.

[0085] The LCD screen 101 includes a display screen component for presenting images, a driving component for driving image display, a component for receiving image signals, and displaying video content, image content, and a menu control interface, as well as a user control UI interface.

[0086] The liquid crystal display device in this application displays colors based on a field sequential display method. Within a frame, the color display effect is achieved through the cooperation of the RGBW backlight and the display assembly. Therefore, in the field sequential display method, the liquid crystal display 101 does not include a color filter. The traditional spatial color mixing method requires a color filter because it requires a color filter to combine the four sub-pixels of red, green, blue, and white into a single pixel to display color.

[0087] The backlight module 102 includes four-color backlight sources (red R, green G, blue B, and white W), a light guide plate, a substrate, a light-transmitting film, and other components, and is used to provide backlight for the liquid crystal display 101 to display clear images.

[0088] The processor 103 may include at least one of a video processor 103, an audio processor 103, a graphics processing unit 103 (GPU), random access memory (RAM), read-only memory (ROM), first to nth interfaces for input / output, and a communication bus. The processor 103 may control the operation of the liquid crystal display device and respond to various user operations through various stored software control programs.

[0089] The driver board TCON is used to control the display of the liquid crystal display 101. It obtains audio and video signals from the audio and video signal input interface 108, and processes the audio and video input signals and sends them to the liquid crystal display 101 in a specific manner, so that the liquid crystal display 101 can display images. The driver panel 104 can usually include components such as driver chips and logic circuits.

[0090] The high-voltage board 106 is an important component of the liquid crystal display device. It is a board that carries high-voltage power. In the liquid crystal display 101, the function of the high-voltage board is to convert the low-voltage power supply into a high-voltage power supply to provide sufficient power to drive the display of the liquid crystal display, that is, to light up the backlight source in the liquid crystal display device so that the liquid crystal display 101 can display a complete image under the illumination of the backlight source.

[0091] The power board 105 is used to provide power to components in the liquid crystal display device so that each component can operate normally.

[0092] The keypad 107 is used to receive key signals from the user and send the signals to the processor 103 and the like. The keypad 107 generally includes components such as key switches and interface lines.

[0093] Figure 2 A flow chart of a method for displaying a color image on a liquid crystal display device based on field sequential display is provided in some embodiments of the present application. The method may include the following steps:

[0094] S201. The LCD screen displays an image.

[0095] In this embodiment, the LCD screen is divided into a plurality of backlight zones 02. Figure 3A A schematic diagram of backlight partitioning provided in some embodiments of the present application, such as Figure 3AAs shown, the liquid crystal display screen 101 can be divided into 4 rows and 6 columns, with a total of 24 backlight sub-areas 02, and the area of each backlight sub-area is the same. Figure 3B A schematic diagram of another backlight partition provided in some embodiments of the present application, such as Figure 3B As shown, the liquid crystal display screen 101 can be divided into 10 rows and 7 columns, with a total of 70 backlight partitions. Accordingly, the area of each backlight partition is the same.

[0096] It is understandable that the number of the above-mentioned backlight partitions is only used for illustration and can be determined according to the actual model of the liquid crystal display device, etc.

[0097] S202: The backlight module emits backlight, wherein the backlight is used to adjust the backlight brightness of the display image corresponding to the four-field sequence.

[0098] In this embodiment, the liquid crystal display device performs color display based on a four-field sequential display method. In field sequential display, a frame of image to be displayed can be divided into four monochrome color component images according to RGBW colors, and the display time of a frame can be divided into sub-field sequences corresponding to the four RGBW colors. Among them, R represents the red channel, G represents the green channel, B represents the blue channel, and W represents the white channel.

[0099] The backlight module provides a backlight corresponding to a sub-field sequence for the liquid crystal display screen to realize the display of colors in the corresponding field sequence, wherein the backlight module can be an RGBW-Mini-LED backlight source.

[0100] S203: The processor obtains RGBW image pixel data of the image in the backlight subarea.

[0101] In this embodiment, the processor may also be a controller, a main control chip, or an operating system, etc., and this application does not limit its type.

[0102] A possible implementation manner in which the processor obtains the RGBW image pixel data of the image in the backlight subarea is:

[0103] The processor obtains RGB image pixel data of the image in the backlight partition, converts the RGB image pixel data into RGBW image pixel data, thereby obtaining the RGBW image pixel data of the image in the backlight partition.

[0104] S204: The processor further obtains backlight brightness data corresponding to R color, G color, B color, and W color based on the RGBW image pixel data and a preset backlight extraction algorithm.

[0105] After the processor obtains the RGBW image pixel data, it obtains the backlight brightness data corresponding to the R, G, B and W colors respectively according to the preset backlight extraction algorithm. The specific implementation process will be described in detail in the following embodiments. Please refer to the following embodiments.

[0106] S205 , the processor further determines image compensation pixel data corresponding to R color, G color, B color, and W color based on a preset pixel compensation algorithm and backlight brightness data corresponding to R color, G color, B color, and W color.

[0107] The processor performs backlight simulation based on the obtained backlight brightness data corresponding to the R, G, B and W colors, obtains the simulated backlight brightness distribution of each backlight partition in the liquid crystal display, and determines the image compensation pixel data corresponding to the R, G, B and W colors according to the preset pixel compensation algorithm. The specific implementation process will be described in detail in the following embodiments, please refer to the following embodiments.

[0108] S206 , the liquid crystal display screen compensates the pixel data according to the images corresponding to the R color, the G color, the B color, and the W color, and displays a color image.

[0109] The processor controls the driver board TCON (Timing Controller) and the backlight module. The panel driver board and the backlight module synchronously control the transmittance of the four sub-field sequences in the LCD screen according to the image compensation pixel data corresponding to the R, G, B and W colors and the backlight brightness, thereby obtaining sub-images corresponding to the four field sequences on the LCD screen. The LCD screen quickly switches the sub-images within the display time of one frame, and uses the human eye's visual persistence effect to achieve color superposition in time, thereby realizing color display.

[0110] Specifically, pixel data corresponding to the R color image is compensated to generate a sub-image corresponding to the R color. Pixel data corresponding to the G color image is compensated to generate a sub-image corresponding to the G color. Pixel data corresponding to the B color image is compensated to generate a sub-image corresponding to the B color. Pixel data corresponding to the W color image is compensated to generate a sub-image corresponding to the W color. A color image is then displayed based on the sub-images corresponding to the R color, the G color, the B color, and the W color.

[0111] In the above-described embodiment of the present application, the liquid crystal display is divided into multiple backlight zones. The liquid crystal display is used to display images, and the backlight module is used to emit backlight. The backlight module is used to adjust the backlight brightness of the displayed image corresponding to a four-field sequence. The processor is used to obtain RGBW image pixel data of the image in the backlight zone and, based on the RGBW image pixel data and a preset backlight extraction algorithm, obtain backlight brightness data corresponding to the R, G, B, and W colors. The processor is also used to determine image compensation pixel data corresponding to the R, G, B, and W colors based on a preset pixel compensation algorithm and the backlight brightness data corresponding to the R, G, B, and W colors. The liquid crystal display is used to display a color image based on the image compensation pixel data corresponding to the R, G, B, and W colors. The method of this embodiment determines the image compensation pixel data corresponding to the RGBW based on the RGBW backlight brightness data, and displays the color image in the corresponding field sequence based on the image compensation pixel data corresponding to the RGBW. This field sequential display method significantly reduces the power consumption of the liquid crystal display device and improves the user experience.

[0112] Furthermore, based on the above embodiment, the following embodiment illustrates a process in which the processor obtains backlight brightness data corresponding to R color, G color, B color and W color based on RGBW image pixel data and a preset backlight extraction algorithm.

[0113] Figure 4 A flowchart of a method for obtaining backlight brightness data corresponding to RGBW colors provided in some embodiments of the present application is shown as follows: Figure 4 As shown, the processor is configured to perform the following steps:

[0114] S401: The processor obtains a plurality of image pixel data corresponding to R color, a plurality of image pixel data corresponding to G color, and a plurality of image pixel data corresponding to B color in a backlight partition.

[0115] As shown in the following formula (1):

[0116]

[0117] Among them, R(i,j) represents the image pixel data corresponding to the R color; G(i,j) represents the image pixel data corresponding to the G color; B(i,j) represents the image pixel data corresponding to the B color; (i,j) represents the position information of the backlight partition; γ represents the preset adjustment coefficient.

[0118] S402: The processor determines backlight brightness data corresponding to the R color according to upper limits of a plurality of image pixel data corresponding to the R color.

[0119] The processor determines the upper limit value (maximum value) of the image pixel data from the multiple image pixel data corresponding to the R color, and determines the upper limit value Rmax as the backlight brightness data corresponding to the R color, that is, Rmax=Max(R(i,j)).

[0120] S403: The processor determines backlight brightness data corresponding to the G color according to upper limits of a plurality of image pixel data corresponding to the G color.

[0121] Accordingly, the processor determines the upper limit value (maximum value) of the image pixel data from the multiple image pixel data corresponding to the G color, and determines the upper limit value Gmax as the backlight brightness data corresponding to the G color, that is, Gmax=Max(G(i,j)).

[0122] S404: The processor determines backlight brightness data corresponding to color B according to upper limits of a plurality of image pixel data corresponding to color B.

[0123] Accordingly, the processor determines the upper limit value (maximum value) of the image pixel data from the multiple image pixel data corresponding to the B color, and determines the upper limit value Bmax as the backlight brightness data corresponding to the B color, that is, Bmax=Max(B(i,j)).

[0124] S405 , the processor determines backlight brightness data corresponding to the W color according to the lower limit values of the plurality of image pixel data corresponding to the R color, the lower limit values of the plurality of image pixel data corresponding to the G color, and the lower limit values of the plurality of image pixel data corresponding to the B color.

[0125] In some embodiments, as Figure 5 As shown, Figure 5 This is a flow chart of a method for determining backlight brightness data corresponding to color W provided in some embodiments of the present application. The processor is configured to perform the following steps:

[0126] S501: The processor determines an upper limit value of image pixel data from lower limit values of multiple image pixel data corresponding to R color, lower limit values of multiple image pixel data corresponding to G color, and lower limit values of multiple image pixel data corresponding to B color.

[0127] As shown in the following formula (2):

[0128] MinRGB(i,j)=Min(R(i,j),G(i,j),B(i,j)) (2)

[0129] The processor determines the lower limit value Min(R(i,j)) from the multiple image pixel data corresponding to the R color, determines the lower limit value Min(G(i,j)) from the multiple image pixel data corresponding to the G color, and determines the lower limit value Min(B(i,j)) from the multiple image pixel data corresponding to the B color.

[0130] The upper limit value (maximum value) Max(MinRGB(i,j)) is determined from MinRGB(i,j).

[0131] S502: The processor determines the backlight brightness data corresponding to the W color according to the upper limit value.

[0132] The processor determines the upper limit value Max(MinRGB(i,j)) as the backlight brightness data corresponding to the W color, that is, Wmax=Max(MinRGB(i,j)).

[0133] It is understandable that the execution order between step 302 and step 305 can be determined according to actual conditions, etc. Figure 4 The execution order of the steps shown is for illustration only and does not limit the present application.

[0134] In the above-mentioned embodiment of the present application, the processor obtains multiple image pixel data corresponding to the R color, multiple image pixel data corresponding to the G color, and multiple image pixel data corresponding to the B color in the backlight partition, and determines the backlight brightness data corresponding to RGB according to the upper limit values of the multiple image pixel data corresponding to RGB in the backlight partition, and determines the backlight brightness data corresponding to W according to the lower limit values of the multiple image pixel data corresponding to RGB, thereby improving the accuracy and convenience of the obtained backlight brightness data corresponding to RGBW.

[0135] Furthermore, based on the above embodiments, the following embodiments illustrate the process of the processor determining the image compensation pixel data corresponding to R color, G color, B color and W color based on a preset pixel compensation algorithm and the backlight brightness data corresponding to R color, G color, B color and W color.

[0136] Figure 6 A flowchart of a method for determining image compensation pixel data provided in some embodiments of the present application is shown as follows: Figure 6 As shown, the processor is configured to perform the following steps:

[0137] S601: The processor obtains the transmittance corresponding to the R color, the transmittance corresponding to the G color, the transmittance corresponding to the B color, and the transmittance corresponding to the W color.

[0138] S602. The processor determines the image brightness corresponding to R color, the image brightness corresponding to G color, the image brightness corresponding to B color, and the image brightness corresponding to W color according to the backlight brightness data and transmittance corresponding to R color, G color, B color, and W color.

[0139] One possible implementation is:

[0140] like Figure 7 As shown, Figure 7 A flowchart of a method for determining image brightness is provided in some embodiments of the present application, wherein a processor is configured to perform the following steps:

[0141] S701 : The processor determines the image brightness RL corresponding to the R color according to the backlight brightness data corresponding to the R color, the backlight brightness data corresponding to the W color, and the transmittance corresponding to the R color.

[0142] As shown in the following formula (3):

[0143] RL=(Rmax-Wmax)×R f (3)

[0144] Among them, Rmax represents the backlight brightness data corresponding to the R color; Wmax represents the backlight brightness data corresponding to the W color; R f Indicates the transmittance corresponding to the R color.

[0145] S702 : The processor determines the image brightness GL corresponding to the G color according to the backlight brightness data corresponding to the G color, the backlight brightness data corresponding to the W color, and the transmittance corresponding to the G color.

[0146] As shown in the following formula (4):

[0147] GL=(Gmax-Wmax)×G f (4)

[0148] Among them, Gmax represents the backlight brightness data corresponding to the G color; G f Indicates the transmittance corresponding to the G color.

[0149] S703 : The processor determines the image brightness BL corresponding to the B color according to the backlight brightness data corresponding to the B color, the backlight brightness data corresponding to the W color, and the transmittance corresponding to the B color.

[0150] As shown in the following formula (5):

[0151] BL=(Bmax-Wmax)×B f (5)

[0152] Among them, Bmax represents the backlight brightness data corresponding to color B; Bf Indicates the transmittance corresponding to color B.

[0153] S704 : The processor determines the image brightness WL corresponding to the W color according to the backlight brightness data corresponding to the W color and the transmittance corresponding to the W color.

[0154] As shown in the following formula (6):

[0155] WL=Wmax×W f (6)

[0156] Among them, W f Indicates the transmittance corresponding to color W.

[0157] In this embodiment, the execution order between step 601 and step 604 is not limited and can be determined according to actual application conditions.

[0158] S603 : The processor determines image compensation pixel data pixel_r_gain corresponding to the R color according to the image brightness corresponding to the R color and the transmittance corresponding to the R color.

[0159] As shown in the following formula (7):

[0160]

[0161] S604: The processor determines image compensation pixel data pixel_g_gain corresponding to the G color according to the image brightness corresponding to the G color and the transmittance corresponding to the G color.

[0162] As shown in the following formula (8):

[0163]

[0164] S605 : The processor determines image compensation pixel data pixel_b_gain corresponding to color B according to the image brightness corresponding to color B and the transmittance corresponding to color B.

[0165] As shown in the following formula (9):

[0166]

[0167] S606 : The processor determines image compensation pixel data pixel_w_gain corresponding to the W color according to the image brightness corresponding to the W color and the transmittance corresponding to the W color.

[0168] As shown in the following formula (10):

[0169]

[0170] In this embodiment, the execution order between step 503 and step 506 is also not limited and can be determined according to actual application conditions.

[0171] In the above embodiment of the present application, the processor obtains the transmittance corresponding to the R color, the transmittance corresponding to the G color, the transmittance corresponding to the B color, and the transmittance corresponding to the W color, and determines the image brightness corresponding to the R color, the image brightness corresponding to the G color, the image brightness corresponding to the B color, and the image brightness corresponding to the W color based on the backlight brightness data and transmittance corresponding to the R color, G color, B color, and W color. Furthermore, based on the image brightness corresponding to the RGBW colors and the transmittance corresponding to the colors, the image compensation pixel data corresponding to the RGBW colors is determined, thereby improving the efficiency and accuracy of the obtained image compensation pixel data.

[0172] In order to facilitate understanding of the method of this application, below, Figure 8 The schematic diagram shown briefly describes the application. Figure 8 A schematic diagram of a color image display of a liquid crystal display device provided in some embodiments of the present application, such as Figure 8 As shown:

[0173] S801: The processor obtains RGB image pixel data of an image in a backlight subarea.

[0174] S802: The processor converts the RGB image pixel data into RGBW image pixel data.

[0175] S803: The processor obtains backlight brightness data corresponding to R color, G color, B color, and W color based on a preset backlight extraction algorithm.

[0176] S804 , the four LED micro control units control the backlight brightness of the corresponding color channels in a time-sharing manner according to the backlight brightness data corresponding to the R color, the G color, the B color, and the W color.

[0177] S805: The processor performs backlight simulation according to the backlight brightness data corresponding to the R, G, B, and W colors to obtain the backlight brightness distribution of each backlight partition in the liquid crystal display.

[0178] S806: The processor determines image compensation pixel data corresponding to the R channel, the G channel, the B channel, and the W channel based on a preset pixel compensation algorithm.

[0179] S807 , the liquid crystal display screen without color filter compensates pixel data according to the images corresponding to the R channel, the G channel, the B channel, and the W channel, and displays a color image.

[0180] The specific implementation process of the above steps has been described in detail in the aforementioned multiple embodiments. Please refer to the aforementioned multiple embodiments and will not be repeated here.

[0181] The present application also provides a computer-readable storage medium, which may include: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, and other media that can store program codes. Specifically, the computer-readable storage medium stores computer execution instructions, which are used for the color image display method of the liquid crystal display device based on field sequential display in the above-mentioned embodiment.

[0182] The present application also provides a computer program product, the program product including execution instructions stored in a readable storage medium. At least one control module of a liquid crystal display device can read the execution instructions from the readable storage medium, and the at least one control module executes the execution instructions to cause the liquid crystal display device to implement the color image display method of the liquid crystal display device based on field sequential display provided in the various embodiments described above.

[0183] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

[0184] For ease of explanation, the above description has been presented in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations are possible. The above embodiments have been selected and described to better explain the principles and practical applications, thereby enabling those skilled in the art to better utilize the embodiments and various variations of the embodiments suitable for specific use considerations.

Claims

1. A liquid crystal display device based on field sequential display, characterized in that: The liquid crystal display device comprises: A liquid crystal display screen, the liquid crystal display screen being divided into a plurality of backlight partitions, the liquid crystal display screen being configured to: display an image; A backlight module connected to the liquid crystal display screen, the backlight module being configured to: emit backlight, the backlight being used to adjust the backlight brightness of the display image corresponding to a four-field sequence, the display device performing color display based on a four-field sequential display mode; A processor connected to the liquid crystal display and the backlight module respectively, wherein the processor is configured to: Acquire RGBW image pixel data of the image in the backlight partition, where R color, G color, B color, and W color correspond one-to-one to the four field sequences; According to the RGBW image pixel data, based on a preset backlight extraction algorithm, obtaining backlight brightness data corresponding to R color, G color, B color and W color; Determine image compensation pixel data corresponding to the R color, the G color, the B color, and the W color based on a preset pixel compensation algorithm and the backlight brightness data corresponding to the R color, the G color, the B color, and the W color; The liquid crystal display is further configured to display a color image according to the image compensation pixel data corresponding to the R color, the G color, the B color, and the W color.

2. The display device according to claim 1, wherein When the processor is configured to obtain RGBW image pixel data of an image in a backlight subarea, the processor specifically includes: Obtaining RGB image pixel data of an image in a backlight partition; The RGB image pixel data is converted into RGBW image pixel data to obtain the RGBW image pixel data of the image in the backlight subarea.

3. The display device according to claim 2, wherein When the processor is configured to obtain backlight brightness data corresponding to R color, G color, B color, and W color based on the RGBW image pixel data and a preset backlight extraction algorithm, the method specifically includes: Acquire a plurality of image pixel data corresponding to R color, a plurality of image pixel data corresponding to G color, and a plurality of image pixel data corresponding to B color in the backlight partition; Determining backlight brightness data corresponding to the R color according to upper limits of a plurality of image pixel data corresponding to the R color; determining backlight brightness data corresponding to the G color according to upper limits of a plurality of image pixel data corresponding to the G color; Determining backlight brightness data corresponding to the color B according to upper limits of a plurality of image pixel data corresponding to the color B; The backlight brightness data corresponding to the W color is determined according to the lower limit values of the plurality of image pixel data corresponding to the R color, the lower limit values of the plurality of image pixel data corresponding to the G color, and the lower limit values of the plurality of image pixel data corresponding to the B color.

4. The display device according to claim 3, wherein When the processor is configured to determine the backlight brightness data corresponding to the W color based on the lower limit values of the plurality of image pixel data corresponding to the R color, the lower limit values of the plurality of image pixel data corresponding to the G color, and the lower limit values of the plurality of image pixel data corresponding to the B color, the method specifically includes: determining an upper limit value of the image pixel data from the lower limit values of the plurality of image pixel data corresponding to the R color, the lower limit values of the plurality of image pixel data corresponding to the G color, and the lower limit values of the plurality of image pixel data corresponding to the B color; The backlight brightness data corresponding to the W color is determined according to the upper limit value.

5. The display device according to claim 4, wherein When the processor is configured to determine the image compensation pixel data corresponding to the R color, the G color, the B color, and the W color based on a preset pixel compensation algorithm and the backlight brightness data corresponding to the R color, the G color, the B color, and the W color, the method specifically includes: Obtain the transmittance corresponding to the R color, the transmittance corresponding to the G color, the transmittance corresponding to the B color, and the transmittance corresponding to the W color; Determine the image brightness corresponding to the R color, the image brightness corresponding to the G color, the image brightness corresponding to the B color, and the image brightness corresponding to the W color according to the backlight brightness data and transmittance corresponding to the R color, the G color, the B color, and the W color; Determining image compensation pixel data corresponding to the R color according to the image brightness corresponding to the R color and the transmittance corresponding to the R color; Determining image compensation pixel data corresponding to the G color according to the image brightness corresponding to the G color and the transmittance corresponding to the G color; Determining image compensation pixel data corresponding to the B color according to the image brightness corresponding to the B color and the transmittance corresponding to the B color; The image compensation pixel data corresponding to the W color is determined according to the image brightness corresponding to the W color and the transmittance corresponding to the W color.

6. The display device according to claim 5, wherein: When the processor is configured to determine, based on the backlight brightness data corresponding to the R color, the G color, the B color, and the W color, the image brightness corresponding to the R color, the G color, the B color, and the W color, the image brightness corresponding to the R color, the G color, the B color, and the W color, specifically includes: determining the image brightness corresponding to the R color according to the backlight brightness data corresponding to the R color, the backlight brightness data corresponding to the W color, and the transmittance corresponding to the R color; determining the image brightness corresponding to the G color according to the backlight brightness data corresponding to the G color, the backlight brightness data corresponding to the W color, and the transmittance corresponding to the G color; Determine the image brightness corresponding to the B color according to the backlight brightness data corresponding to the B color, the backlight brightness data corresponding to the W color, and the transmittance corresponding to the B color; The image brightness corresponding to the W color is determined according to the backlight brightness data corresponding to the W color and the transmittance corresponding to the W color.

7. The display device according to any one of claims 1 to 6, characterized in that: When the liquid crystal display is configured to display a color image based on the image compensation pixel data corresponding to the R color, the G color, the B color, and the W color, the liquid crystal display specifically includes: Compensating pixel data of the image corresponding to the R color to generate a sub-image corresponding to the R color; Compensating pixel data of the image corresponding to the G color to generate a sub-image corresponding to the G color; Compensating pixel data of the image corresponding to the color B to generate a sub-image corresponding to the color B; Compensating pixel data of the image corresponding to the color W to generate a sub-image corresponding to the color W; The color image is displayed according to the sub-image corresponding to the R color, the sub-image corresponding to the G color, the sub-image corresponding to the B color, and the sub-image corresponding to the W color.

8. A color image display method for a liquid crystal display device based on field sequential display, characterized in that: The method comprises: The processor obtains RGBW image pixel data of the image in the backlight partition; The processor obtains backlight brightness data corresponding to R color, G color, B color, and W color based on the RGBW image pixel data and a preset backlight extraction algorithm; The processor determines image compensation pixel data corresponding to the R color, the G color, the B color, and the W color based on a preset pixel compensation algorithm and the backlight brightness data corresponding to the R color, the G color, the B color, and the W color; The liquid crystal display screen displays a color image according to the image compensation pixel data corresponding to the R color, the G color, the B color, and the W color.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by the processor, the color image display method of the liquid crystal display device based on field sequential display according to claim 8 is implemented.

10. A computer program product, characterized in that The invention comprises a computer program, which realizes the color image display method of the liquid crystal display device based on field sequential display according to claim 8 when the computer program is executed by a processor.

Images