Image display method and device based on double Cell display screens, and display

Abstract

The invention discloses an image display method and device based on a double-Cell display screen and a displayer, and the method comprises the steps: copying an input image signal, so as to obtain a first image signal and a second image signal; carrying out image enhancement and correction processing on the first-path image signal, and then transmitting the first-path image signal to a color liquid crystal layer; performing brightness control processing on the second path of image signal to obtain a brightness control signal, and transmitting the brightness control signal to the black and white liquid crystal layer; and performing backlight control processing on the second path of image signal to obtain a backlight control signal, and transmitting the backlight control signal to a backlight layer. According to the invention, the problems that the relative contrast of the minimum controllable light block cannot be enhanced and halo is caused when a partition dimming technology is independently used are solved, the high contrast can be compared with that of an OLED (Organic Light Emitting Diode), and meanwhile, the problems of high power and serious heating of a common double-Cell display screen are solved, so that the power of the display is greatly reduced, and the display efficiency is improved. And the display effect of the display has the greatest advantage.

Description

Technical Field

[0001] The present invention relates to the technical field of displays, and more specifically, to an image display method, device, and display based on a dual-Cell display screen. Background Art

[0002] Since the development of display technology to date, traditional LCD display systems have faced multiple technical bottlenecks in terms of image quality performance. The core problem stems from the adoption of a backlight global illumination mechanism, that is, the entire liquid crystal panel relies on a single backlight source to provide uniform illumination. This structure results in the inability to completely block the backlight when displaying a black screen, causing the contrast ratio to generally be lower than 2000:1. Subtle gray-scale changes in dark-field scenes are drowned out by the background light, especially when presenting HDR content, details are lost.

[0003] The physical properties of a single-layer liquid crystal panel further limit the color reproduction ability. The existing Local Dimming (zone dimming) technology divides the backlight source into several independent control regions, and theoretically can achieve more precise brightness regulation. However, limited by the LED packaging density and drive circuit design, the number of zones in mainstream products usually remains in the hundreds to thousands range. With a limited number of zones, this leads to an obvious halo effect (HaloEffect) at the junction of adjacent high-brightness and dark-field regions. When displaying extreme light-dark contrast scenes such as starry skies, the overly large zone units cause local brightness overflow, and the dark areas cannot achieve true pure black display. At the same time, the limited number of zones results in insufficient matching between the backlight brightness curve and the image content, and it is easy to have a stepwise change in brightness when displaying complex light and shadow images, destroying the continuity of the image. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an image display method, device, and display based on a dual-Cell display screen.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] In a first aspect, the present invention provides an image display method based on a dual-Cell display screen. The dual-Cell display screen includes a color liquid crystal layer, a black-and-white liquid crystal layer, and a backlight layer. The black-and-white liquid crystal layer is disposed between the color liquid crystal layer and the backlight layer. The method includes:

[0007] Copy the input image signal to obtain a first path of image signal and a second path of image signal;

[0008] After performing image enhancement and correction processing on the first path of image signal, send it to the color liquid crystal layer;

[0009] Perform brightness control processing on the second path of image signal to obtain a brightness control signal, and send the brightness control signal to the black-and-white liquid crystal layer;

[0010] Perform backlight control processing on the second image signal to obtain a backlight control signal, and transmit the backlight control signal to the backlight layer.

[0011] Furthermore, the black-and-white liquid crystal layer includes a number of independent light control partitions, and each independent light control partition of the black-and-white liquid crystal layer corresponds one-to-one with the pixel points of the color liquid crystal layer.

[0012] Furthermore, the performing brightness control processing on the second image signal includes:

[0013] Adjust the brightness uniformity of each pixel point of the second image signal;

[0014] Adjust the light transmittance of each independent light control partition of the black-and-white liquid crystal layer.

[0015] Furthermore, the adjusting the brightness uniformity of each pixel point of the second image signal includes:

[0016] Add an energy factor to each pixel point in the second image signal through the first lookup table of the black-and-white liquid crystal layer;

[0017] Control the size of the energy factor to make the brightness of each pixel point in the second image signal consistent;

[0018] Write a set of linear lookup tables into the second lookup table of the black-and-white liquid crystal layer;

[0019] Linearly control the brightness of each pixel point in the second image signal by using the linear lookup table.

[0020] Furthermore, the adjusting the light transmittance of each independent light control partition of the black-and-white liquid crystal layer includes:

[0021] Locate the partition with the highest brightness and the partition with the lowest brightness in the entire frame image of the second image signal;

[0022] Increase the light transmittance of the highest brightness partition through voltage regulation;

[0023] Reduce the light transmittance of the lowest brightness partition through voltage regulation.

[0024] Furthermore, the performing backlight control processing on the second image signal includes:

[0025] Obtain the brightness levels required for different partitions in the entire frame image of the second image signal;

[0026] Set the brightness levels of the corresponding regions of the backlight layer according to the brightness levels required for different partitions.

[0027] Further, adjusting the brightness level of the area corresponding to the backlight layer according to the required light and dark degrees of different partitions includes:

[0028] When it is necessary to increase the brightness of the area corresponding to the backlight layer, the increased brightness value is less than the maximum brightness value that the corresponding area can actually reach.

[0029] In a second aspect, the present invention also provides an image display device based on a dual-Cell display screen. The dual-Cell display screen includes a color liquid crystal layer, a black-and-white liquid crystal layer, and a backlight layer. The black-and-white liquid crystal layer is disposed between the color liquid crystal layer and the backlight layer. The device includes:

[0030] A replication unit for replicating the input image signal to obtain a first path of image signal and a second path of image signal;

[0031] An image enhancement and correction processing unit for performing image enhancement and correction processing on the first path of image signal and then delivering it to the color liquid crystal layer;

[0032] A brightness control processing unit for performing brightness control processing on the second path of image signal to obtain a brightness control signal and delivering the brightness control signal to the black-and-white liquid crystal layer;

[0033] A backlight control processing unit for performing backlight control processing on the second path of image signal to obtain a backlight control signal and delivering the backlight control signal to the backlight layer.

[0034] In a third aspect, the present invention also provides a display, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, it implements the image display method based on the dual-Cell display screen as described above.

[0035] In a fourth aspect, the present invention also provides a computer-readable storage medium. The storage medium stores a computer program, and the computer program includes program instructions. When the program instructions are executed by a processor, the processor is caused to execute the image display method based on the dual-Cell display screen as described above.

[0036] The beneficial effects of the present invention compared with the prior art are as follows: An image display method based on a dual-Cell display screen, the dual-Cell display screen includes a color liquid crystal layer, a black-and-white liquid crystal layer, and a backlight layer, the black-and-white liquid crystal layer is disposed between the color liquid crystal layer and the backlight layer, and the method includes: copying an input image signal to obtain a first path of image signal and a second path of image signal; performing image enhancement and correction processing on the first path of image signal and then transmitting it to the color liquid crystal layer; performing brightness control processing on the second path of image signal to obtain a brightness control signal, and transmitting the brightness control signal to the black-and-white liquid crystal layer; performing backlight control processing on the second path of image signal to obtain a backlight control signal, and transmitting the backlight control signal to the backlight layer. The present invention makes full use of the characteristics of the dual-Cell display screen, and at the same time cooperates with the brightness control and backlight control strategies, which not only solves the problem that the relative contrast of the minimum controllable light block cannot be enhanced and the halo phenomenon when using the zoned dimming technology alone, but also can compare with the high contrast of OLED, and at the same time solves the problem of high power and serious heating of the ordinary dual-Cell display screen, thereby greatly reducing the power of the display and enabling the display effect of the display to exert the greatest advantage.

[0037] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the specification. And in order to make the above and other objects, features and advantages of the present invention more obvious and understandable, the following specific preferred embodiments are given and described in detail as follows. Brief Description of the Drawings

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0039] Figure 1 It is a schematic structural diagram of a dual-Cell display screen provided for a specific embodiment of the present invention;

[0040] Figure 2 It is a flowchart of an image display method based on a dual-Cell display screen provided for a specific embodiment of the present invention;

[0041] Figure 3 It is a schematic block diagram of an image display device based on a dual-Cell display screen provided for a specific embodiment of the present invention;

[0042] [[ID=2〕] Figure 4 It is a schematic block diagram of a display provided for a specific embodiment of the present invention. Detailed Description of the Embodiments

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0044] It should be understood that when used in this specification and the appended claims, the terms "comprises" and "comprising" indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0045] It should also be understood that the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification and the appended claims of the present invention, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to include the plural forms.

[0046] It should be further understood that the term " / and / " used in the specification and the appended claims of the present invention refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0047] As Figure 1 shown, the dual Cell display screen includes a color liquid crystal layer (ColorCell), a black and white liquid crystal layer (Monochromatic Cell), and a backlight layer (Main Led), and the black and white liquid crystal layer is disposed between the color liquid crystal layer and the backlight layer.

[0048] Color liquid crystal layer (Color Cell): It integrates RGB color films and liquid crystal molecules, is responsible for color rendering, and real-time display of image quality. The liquid crystal molecules in the color liquid crystal layer will deflect to different degrees according to the input image signal, thereby controlling the transmission amount and mixing ratio of primary color lights such as red, green, and blue, and then realizing the display of color images.

[0049] Monochromatic Cell: It is located below the color liquid crystal layer and is divided into over a million independent light control zones. Each independent light control zone corresponds one-to-one with the pixel points of the color liquid crystal layer. It should be noted that although a non-RGB pixel arrangement can be used, an area where the entire color point RGB is located can be regarded as one pixel, but its arrangement should maintain the same position and the same size as the color liquid crystal layer (the color liquid crystal layer and the monochromatic liquid crystal layer need to be overlapped point by point, but each pixel point of the color liquid crystal layer consists of three sub-pixels RGB, and the monochromatic liquid crystal layer can also be composed of the same three sub-pixels RGB, or it can use one pixel with the same total area as the RGB of the color liquid crystal layer without being divided into three sub-pixels RGB). Of course, the same control method as the three sub-pixels RGB of the color liquid crystal layer can also be used. In this way, the light transmittance of each zone can be adjusted through voltage, achieving precise pixel-level brightness control.

[0050] Main Led: It is the part that provides the backlight for the entire display screen. Usually, light-emitting diodes (LEDs) are used as the backlight, which can control the backlight in zones and are completely independent of each other without interference. The number of its zones does not need to be too many. Generally, the area where the screen is located can be divided into hundreds of independently controllable zones.

[0051] It should be noted that in this application, the monochromatic liquid crystal layer is divided into over a million independent light control zones, while the backlight layer is divided into hundreds of independently controllable zones. It is relatively easy for the monochromatic liquid crystal layer to be divided into over a million independent light control zones. The reason is that for the independent light control zones of the monochromatic liquid crystal layer, the light transmittance is mainly adjusted by controlling the voltage, and the signal processing is relatively simple. There is no need to consider complex optical and electrical factors like the backlight source. Only by applying the corresponding voltage signal to the corresponding pixel according to the image signal can precise brightness control be achieved. Generally, the backlight layer can be divided into hundreds of independently controllable zones. Due to limitations in LED packaging density and drive circuit design, it is more difficult to divide into more zones.

[0052] This application is mainly applied to devices that require high-quality image display, such as high-end monitors, televisions, etc. In these devices, the dual-Cell display screen is the core component. It receives the input signal from the image signal source and, through the coordinated operation of the internal color liquid crystal layer, monochromatic liquid crystal layer, and backlight layer, converts the image signal into a high-quality image and presents it to the user.

[0053] As Figure 2 shown, the image display method based on the dual-Cell display screen provided by the embodiment of the present invention includes the following steps: S10 - S40.

[0054] S10. Duplicate the input image signal to obtain two identical first and second image signals, creating conditions for subsequent processing of the image signal in different dimensions.

[0055] S20. After performing image enhancement and correction processing on the first image signal, send it to the color liquid crystal layer.

[0056] The image enhancement and correction processing performed on the first image signal aims to optimize the visual effect of the image, enabling the color liquid crystal layer to present a high-quality color image. Specifically, the image enhancement and correction processing includes GAMMA correction, gamut mapping, contrast enhancement, and noise removal, etc. The optimized first image signal is transmitted to the color liquid crystal layer to drive the liquid crystal molecules and RGB color films of the color liquid crystal layer, presenting an image with rich colors and high quality.

[0057] S30. Perform brightness control processing on the second image signal to obtain a brightness control signal, and send the brightness control signal to the black-and-white liquid crystal layer.

[0058] In one embodiment, step S30 specifically includes the following steps: S301 - S302.

[0059] S301. Adjust the brightness uniformity of each pixel point of the second image signal.

[0060] In one embodiment, step S301 specifically includes the following steps: S3011 - S3014.

[0061] S3011. Add an energy factor to each pixel point in the second image signal through the first-layer look-up table of the black-and-white liquid crystal layer.

[0062] The look-up table (LUT) is pre-stored in the display, which records the correction parameters for different pixel points. The first-layer look-up table is specifically used for brightness uniformity correction. In actual operation, according to the position information of the pixel point, the corresponding energy factor is extracted from the first-layer look-up table. This energy factor is a decimal number within the range of 0 to 1, which represents the proportion of additional energy that the pixel point needs to increase or decrease.

[0063] S3012. By controlling the size of the energy factor, make the brightness of each pixel point in the second image signal consistent.

[0064] If a certain pixel point originally has a low brightness, by assigning a larger energy factor, the brightness of this pixel point is increased; conversely, if the pixel point has a high brightness, a relatively smaller energy factor is assigned to reduce its brightness. By continuously adjusting the size of the energy factor, the brightness of all pixel points gradually tends to be consistent.

[0065] S3013. Write a set of linear look-up tables to the second look-up table of the black-and-white liquid crystal layer.

[0066] Generate a set of linear look-up table data according to a preset linear relationship and write it to the second look-up table. This set of linear look-up table data defines the linear mapping relationship between the input signal and the output brightness, that is, the brightness of the black-and-white liquid crystal layer is a straight line with a certain slope.

[0067] S3014. Linearly control the brightness of each pixel in the second image signal by using the linear look-up table.

[0068] After completing the brightness uniformity adjustment of the first look-up table, use the adjusted pixel brightness value as the input, and by querying the second look-up table, obtain the corresponding linearly adjusted brightness value. In this way, the brightness of each pixel can be accurately controlled according to the linear law, meeting the requirements for brightness changes.

[0069] For steps S3011 - S3014, adding an energy factor to the pixels through the first look-up table for brightness adjustment effectively eliminates the brightness differences in different areas of the screen, making the brightness of the entire screen more uniform, and avoiding visual fatigue and image distortion problems caused by uneven brightness. The second look-up table realizes the linear control of the pixel brightness, making the display of the image more accurate and natural at different brightness levels, being able to better restore the true color and details of the image, and improving the display quality of the image.

[0070] S302. Adjust the light transmittance of each independent light control zone of the black-and-white liquid crystal layer.

[0071] In one embodiment, step S302 specifically includes the following steps: S3021 - S3023.

[0072] S3021. Locate the zone with the highest brightness and the zone with the lowest brightness in the entire frame image of the second image signal.

[0073] The black-and-white liquid crystal layer is divided into more than one million independent light control zones. After receiving the second image signal, each independent light control zone will scan and analyze the entire frame of image data.

[0074] By setting a brightness evaluation algorithm, such as calculating the average value, maximum value of the pixel brightness within the zone or using a weighted average method to comprehensively evaluate the brightness of the zone. Through this comprehensive scanning and evaluation, determine the zone with the highest brightness and the zone with the lowest brightness in the entire frame image.

[0075] It should be noted that the entire frame of image data refers to the data of one frame. For example, taking the second image signal as 60Hz, the overall frame is the 60 frames per second of the picture, and each frame of data is the entire frame.

[0076] S3022. Increase the light transmittance of the highest brightness zone by voltage adjustment.

[0077] Each independent light control zone of the black-and-white liquid crystal layer is composed of liquid crystal molecules. The orientation of the liquid crystal molecules changes with the applied voltage, thereby affecting the light transmittance of this zone. After determining the highest brightness zone, according to the pre-set voltage-light transmittance mapping relationship, the voltage value to be applied to this zone is calculated. Usually, increasing the voltage applied to the zone will change the orientation of the liquid crystal molecules, enabling more light to pass through this zone, thereby increasing the light transmittance.

[0078] S3023. Decrease the light transmittance of the lowest brightness zone by voltage adjustment.

[0079] Similar to the principle of increasing the light transmittance of the highest brightness zone, after determining the lowest brightness zone, according to the voltage-light transmittance mapping relationship, the voltage value for reducing the light transmittance of this zone is calculated. Generally speaking, reducing the voltage applied to the zone will change the orientation of the liquid crystal molecules, reducing the amount of light passing through this zone, thereby decreasing the light transmittance.

[0080] For steps S3021 - S3023, by making targeted light transmittance adjustments to the highest and lowest brightness zones, the contrast of the image can be significantly enhanced. The bright parts become brighter and the dark parts become darker, making the details in the picture clearer and more distinguishable. Whether it is the highlight part in a bright scene or the shadow details in a dark scene, they can be presented better, improving the visual experience of the audience. Each independent light control zone can independently adjust the light transmittance according to the image content, avoiding the halo phenomenon that appears in traditional displays, making the display of the image more delicate and realistic.

[0081] It should be noted that S301. Adjust the brightness uniformity of each pixel point of the second video signal and S302. Adjust the light transmittance of each independent light control zone of the black-and-white liquid crystal layer belong to two levels of adjustment, but there is a cooperative relationship between the two, that is, correcting the brightness uniformity of all points on the screen does not mean making the brightness of all points the same. Instead, on the basis of ensuring that the brightness of each point can be accurately and uniformly presented, the high-brightness zones and low-brightness zones are distinguished according to the image content, and different brightness controls are carried out. The following is a specific explanation:

[0082] The purpose of the processing in step S301 is to ensure that each pixel on the screen theoretically has the same light-emitting ability, eliminate the brightness difference between different pixels caused by factors such as the screen production process, and make the screen present a uniform brightness when displaying solid colors. By carefully adjusting the luminous flux of each pixel, the white point uniformity of the entire screen is ultimately achieved, that is, when the screen displays solid colors such as white, the brightness at each position looks uniform. The purpose of the processing in step S302 is to make different areas of the screen present different brightnesses according to the input image content, so as to accurately restore the bright and dark details of the image, improve the contrast and visual effect of the image. For example, parts such as the sky and lights in the image may belong to high-brightness areas, while shadows and night scenes may belong to low-brightness areas. Then, for high-brightness areas, the transmittance of these partitions is increased by adjusting the voltage, so that the overall output of this area is a higher brightness to simulate the bright part in the image; for low-brightness areas, the transmittance of the corresponding partitions is reduced, so that the output of this area is a lower brightness to represent the dark part in the image. Generally speaking, the processing in step S301 ensures that each pixel has a uniform starting state when displaying any color and brightness. The processing in step 302 is a dynamic adjustment based on specific image information. By independently controlling the light of different areas, the screen can present rich brightness levels and details. These two processes cooperate with each other, not only ensuring the brightness uniformity of the screen, but also enabling accurate brightness display according to the image content, thus providing users with a high-quality visual experience.

[0083] S40. Perform backlight control processing on the second image signal to obtain a backlight control signal, and transmit the backlight control signal to the backlight layer.

[0084] In one embodiment, step S40 specifically includes the following steps: S401 - S402.

[0085] S401. Obtain the required light and dark levels of different partitions in the entire frame image of the second image signal.

[0086] S402. Set the brightness level of the corresponding area of the backlight layer according to the required light and dark levels of different partitions.

[0087] After obtaining the required light and dark levels of each partition, according to the pre-established brightness mapping table, it is converted into the brightness level of the corresponding area of the backlight layer. This brightness mapping table reflects the corresponding relationship between different image brightness values and the brightness levels of the backlight layer. Through the control circuit, instructions are sent to the backlight layer driving chip to adjust the current magnitude of the corresponding area LED lamp beads, thereby realizing the control of the backlight layer brightness. Because the brightness of the LED lamp beads is proportional to the passing current, by precisely adjusting the current, the corresponding area of the backlight layer can reach the set brightness level.

[0088] For steps S401 - S402, by precisely controlling the brightness of different regions of the backlight layer, the contrast between the bright and dark parts of the picture becomes more distinct, effectively enhancing the contrast and layering of the image, enabling the audience to see the details in the picture more clearly, and significantly improving the viewing experience. In addition, by adjusting the backlight brightness according to the actual light and dark requirements of different regions of the image, it avoids the energy waste of traditional backlights when displaying dark pictures. When displaying a large - area dark scene, it reduces the backlight brightness of the corresponding region, reduces the power consumption of the LED lamp beads, achieves the purpose of energy conservation, extends the service life of the device, and at the same time, precise zoned backlight control can effectively reduce the halo phenomenon. When displaying a picture with strong light - dark contrast, it prevents the light in the bright area from spilling over into the dark area, making the edges of the image clearer and the picture purer.

[0089] In step S402, when it is necessary to increase the brightness of the region corresponding to the backlight layer, the increased brightness value is less than the maximum brightness value that the corresponding region can actually reach.

[0090] In practical applications, when it is necessary to increase the brightness of a certain region, it is not increased to the maximum brightness value, but a certain brightness margin is reserved. This is because during the display process, the brightness of the image may change at any time. Reserving a brightness margin can provide flexibility for subsequent brightness adjustment to cope with the dynamic changes of the image content. For example, when increasing the brightness, first, based on the current brightness value of this region and the image content, analyze the amplitude of the brightness increase required. Then, refer to the pre - set brightness limit parameter, which stipulates that the increased brightness value cannot exceed a certain proportion (such as 90%) of the actual maximum brightness value of this region.

[0091] In summary: The present invention makes full use of the characteristics of the dual - Cell display screen, and at the same time, in combination with the brightness control and backlight control strategies, it not only solves the problems that the relative contrast of the minimum controllable light block cannot be enhanced and the halo phenomenon when using the zoned dimming technology alone, but also can match the high contrast of OLED, and at the same time solves the problems of high power and serious heat generation of ordinary dual - Cell display screens, thereby greatly reducing the power of the display and enabling the display effect of the display to exert its maximum advantage.

[0092] It should be understood that the magnitudes of the sequence numbers of the steps in the above - mentioned embodiments do not mean the order of execution. The execution order of each process should be determined according to its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

[0093] The embodiment of the present invention also provides an image display device based on a dual - Cell display screen. The image display device based on a dual - Cell display screen is used to execute the steps in any one of the foregoing embodiments of the image display method based on a dual - Cell display screen. Specifically, please refer to Figure 3 , Figure 3FIG. 0 shows a schematic block diagram of an image display device 100 based on a dual-Cell display screen provided by an embodiment of the present application. The image display device 100 based on the dual-Cell display screen specifically includes:

[0094] A replication unit 110, configured to replicate an input image signal to obtain a first path of image signal and a second path of image signal.

[0095] An image enhancement and correction processing unit 120, configured to perform image enhancement and correction processing on the first path of image signal and then deliver it to a color liquid crystal layer.

[0096] A brightness control processing unit 130, configured to perform brightness control processing on the second path of image signal to obtain a brightness control signal, and deliver the brightness control signal to a black-and-white liquid crystal layer.

[0097] A backlight control processing unit 140, configured to perform backlight control processing on the second path of image signal to obtain a backlight control signal, and deliver the backlight control signal to a backlight layer.

[0098] In one embodiment, the brightness control processing unit 130 is specifically configured to:

[0099] Adjust the brightness uniformity of each pixel point of the second path of image signal; adjust the light transmittance of each independent light control partition of the black-and-white liquid crystal layer.

[0100] In one embodiment, the brightness control processing unit 130 is further specifically configured to:

[0101] Add an energy factor to each pixel point in the second path of image signal through a first lookup table of the black-and-white liquid crystal layer; control the size of the energy factor to make the brightness of each pixel point in the second path of image signal consistent; write a set of linear lookup tables into a second lookup table of the black-and-white liquid crystal layer; linearly control the brightness of each pixel point in the second path of image signal by using the linear lookup tables.

[0102] In one embodiment, the brightness control processing unit 130 is further specifically configured to:

[0103] Find the highest-brightness partition and the lowest-brightness partition in the entire-frame image of the second path of image signal; increase the light transmittance of the highest-brightness partition through voltage adjustment; reduce the light transmittance of the lowest-brightness partition through voltage adjustment.

[0104] In one embodiment, the backlight control processing unit 140 is specifically configured to:

[0105] Obtain the brightness levels required for different partitions in the entire-frame image of the second path of image signal; set the brightness levels of the corresponding regions of the backlight layer according to the brightness levels required for different partitions.

[0106] In one embodiment, the backlight control processing unit 140 is further specifically configured to:

[0107] When it is necessary to increase the brightness of the area corresponding to the backlight layer, the increased brightness value is less than the maximum brightness value that the corresponding area can actually reach.

[0108] It should be noted that those skilled in the art can clearly understand that the specific implementation processes of the above image display device 100 based on the dual-Cell display screen and each unit can refer to the corresponding descriptions in the foregoing method embodiments. For the convenience and brevity of description, they will not be elaborated herein.

[0109] The above image display device based on the dual-Cell display screen can be implemented in the form of a computer program, and this computer program can run on a display screen as Figure 4 shown.

[0110] Please refer to Figure 4 , Figure 4 which is a schematic block diagram of a display provided by an embodiment of the present application.

[0111] As Figure 4 shown, the display includes a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, it implements the steps of the above image display method based on the dual-Cell display screen.

[0112] The display 700 includes a processor 720, a memory, and a network interface 750 connected through a system bus 710. Among them, the memory may include a non-volatile storage medium 730 and an internal memory 740.

[0113] The non-volatile storage medium 730 can store an operating system 731 and a computer program 732. When the computer program 732 is executed, it can cause the processor 720 to execute the image display method based on the dual-Cell display screen.

[0114] The processor 720 is used to provide computing and control capabilities to support the operation of the entire display 700.

[0115] The internal memory 740 provides an environment for the operation of the computer program 732 in the non-volatile storage medium 730. When the computer program 732 is executed by the processor 720, it can cause the processor 720 to execute the image display method based on the dual-Cell display screen.

[0116] The network interface 750 is used for network communication, such as sending assigned tasks, etc. Those skilled in the art can understand that Figure 4The structure shown is only a block diagram of some structures related to the solution of this application, and does not constitute a limitation on the display 700 to which the solution of this application is applied. Specifically, the display 700 may include more or fewer components than those shown in the figure, or combine some components, or have a different component arrangement. Among them, the processor 720 is used to run the program code stored in the memory to implement an image display method based on a dual-Cell display screen.

[0117] Those skilled in the art can understand that Figure 4 the embodiments of the display shown do not constitute a limitation on the specific composition of the display. In other embodiments, the display may include more or fewer components than those shown in the figure, or combine some components, or have a different component arrangement. For example, in some embodiments, the display may only include a memory and a processor. In such an embodiment, the structures and functions of the memory and the processor are the same as those in Figure 4 the shown embodiments and will not be described in detail here.

[0118] It should be understood that in the embodiments of this application, the processor 720 may be a central processing unit (CPU), and this processor 720 may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Among them, the general-purpose processor may be a microprocessor or this processor may also be any conventional processor, etc.

[0119] In another embodiment of the present invention, a computer-readable storage medium is provided. The computer-readable storage medium may be a non-volatile computer-readable storage medium. The computer-readable storage medium stores a computer program, where when the computer program is executed by a processor, it implements the image display method based on a dual-Cell display screen disclosed in the embodiments of the present invention.

[0120] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the devices, apparatuses, and units described above can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein. Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of each example have been generally described according to their functions in the above description. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present invention.

[0121] In several embodiments provided by the present invention, it should be understood that the disclosed devices, apparatuses, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods, or units with the same function can be aggregated into one unit. For example, multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. In addition, the displayed or discussed couplings or direct couplings or communication connections to each other can be indirect couplings or communication connections through some interfaces, devices, or units, or can be electrical, mechanical, or other forms of connection.

[0122] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they can be located in one place, or can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the objectives of the solution of the embodiments of the present invention.

[0123] In addition, the functional units in each embodiment of the present invention can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

[0124] When the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROMs), magnetic disks, or optical discs that can store program codes.

[0125] [[ID=

Claims

1. An image display method based on a dual-Cell display screen, characterized in that The dual-Cell display screen includes a color liquid crystal layer, a black-and-white liquid crystal layer, and a backlight layer. The black-and-white liquid crystal layer is disposed between the color liquid crystal layer and the backlight layer. The method includes: Copy the input image signal to obtain a first path of image signal and a second path of image signal; After performing image enhancement and correction processing on the first path of image signal, transmit it to the color liquid crystal layer; Perform brightness control processing on the second path of image signal to obtain a brightness control signal, and transmit the brightness control signal to the black-and-white liquid crystal layer; Perform backlight control processing on the second path of image signal to obtain a backlight control signal, and transmit the backlight control signal to the backlight layer.

2. The image display method based on a dual-Cell display screen according to claim 1, wherein The black-and-white liquid crystal layer includes a plurality of independent light control partitions, and each independent light control partition of the black-and-white liquid crystal layer corresponds one-to-one with the pixel points of the color liquid crystal layer.

3. The image display method based on a dual-Cell display screen according to claim 1, wherein The performing brightness control processing on the second path of image signal includes: Adjust the brightness uniformity of each pixel point of the second path of image signal; Adjust the light transmittance of each independent light control partition of the black-and-white liquid crystal layer.

4. The image display method based on a dual-Cell display screen according to claim 3, wherein, The adjusting the brightness uniformity of each pixel point of the second path of image signal includes: Add an energy factor to each pixel point in the second path of image signal through the first look-up table of the black-and-white liquid crystal layer; By controlling the size of the energy factor, make the brightness of each pixel point in the second path of image signal consistent; Write a set of linear look-up tables into the second look-up table of the black-and-white liquid crystal layer; Use the linear look-up tables to linearly control the brightness of each pixel point in the second path of image signal.

5. The image display method based on a dual-Cell display screen according to claim 3, wherein The adjusting the light transmittance of each independent light control partition of the black-and-white liquid crystal layer includes: Find the partition with the highest brightness and the partition with the lowest brightness in the entire frame image of the second path of image signal; Increase the light transmittance of the highest brightness partition through voltage adjustment; Decrease the light transmittance of the lowest brightness partition through voltage adjustment.

6. The image display method based on a dual-Cell display screen according to claim 1, characterized in that The performing backlight control processing on the second path of image signal includes: Obtain the required brightness and darkness levels of different partitions in the entire frame image of the second path of image signal; Set the brightness level of the corresponding area of the backlight layer according to the required brightness and darkness levels of different partitions.

7. The image display method based on a dual-Cell display screen according to claim 6, wherein The adjusting the brightness level of the corresponding area of the backlight layer according to the required brightness and darkness levels of different partitions includes: When it is necessary to increase the brightness of the corresponding area of the backlight layer, the increased brightness value is less than the maximum brightness value that the corresponding area can actually reach.

8. An image display device based on a dual-Cell display screen, characterized in that, The dual-Cell display screen includes a color liquid crystal layer, a black-and-white liquid crystal layer, and a backlight layer. The black-and-white liquid crystal layer is disposed between the color liquid crystal layer and the backlight layer. The device includes: A copying unit for copying the input image signal to obtain a first path of image signal and a second path of image signal; An image enhancement and correction processing unit for performing image enhancement and correction processing on the first path of image signal and then transmitting it to the color liquid crystal layer; A brightness control processing unit for performing brightness control processing on the second path of image signal to obtain a brightness control signal and transmitting the brightness control signal to the black-and-white liquid crystal layer; A backlight control processing unit for performing backlight control processing on the second path of image signal to obtain a backlight control signal and transmitting the backlight control signal to the backlight layer.

9. A display, characterized in that, It includes a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, it implements the image display method based on a dual-Cell display screen as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The storage medium stores a computer program, and the computer program includes program instructions. When the program instructions are executed by the processor, the processor is caused to execute the image display method based on a dual-Cell display screen as described in any one of claims 1 to 7.

Images