Liquid crystal display device, image display method, and electronic device

Abstract

The present disclosure relates to a liquid crystal display device, an image display method and an electronic device, and belongs to the field of display. The liquid crystal display device comprises a liquid crystal display panel and a control circuit. The liquid crystal display panel comprises a plurality of pixels. The control circuit comprises a first working mode, which is configured to receive initial color information of each pixel of the mth frame of image, and control the liquid crystal display panel to display n different tone sub-field images in sequence according to the initial color information to obtain the mth frame of image. m and n are positive integers, and n is greater than or equal to 2. The initial color information of each pixel comprises initial gray scales in n tones. In the mth frame of image, the actual color information of each pixel comprises actual gray scales in n tones. At least part of the pixels are target pixels. The actual color information of the target pixels reflects different colors from the initial color information, and the difference between the actual gray scales of the same target pixel is greater than the difference between the initial gray scales.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of display, in particular to a liquid crystal display device, an image display method and an electronic device. BACKGROUND

[0002] Display panel is an indispensable part of electronic devices such as televisions and mobile phones, among which, liquid crystal display panel is widely used. The existing liquid crystal display panel has high light loss and high energy consumption in the light emitting process.

[0003] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0004] The purpose of the present disclosure is to overcome the shortcomings of the prior art, and to provide a liquid crystal display device, an image display method and an electronic device.

[0005] According to one aspect of the present disclosure, a liquid crystal display device is provided, comprising a liquid crystal display panel and a control circuit, the liquid crystal display panel comprising a plurality of pixels;

[0006] The control circuit comprises a first working mode, configured to receive initial color information of each pixel of the mth frame image, and control the liquid crystal display panel to display n different tone sub-field images in sequence according to the initial color information, so as to obtain the mth frame image; m and n are positive integers, and n≥2; the initial color information of each pixel comprises initial gray scales at n tones;

[0007] In the mth frame image, the actual color information of each pixel comprises actual gray scales at n tones; at least part of the pixels are target pixels, the actual color information of the target pixels reflects different colors from the initial color information, and the difference between the actual gray scales of the same target pixel is greater than the difference between the initial gray scales.

[0008] In an exemplary embodiment of the present disclosure, in the YUV color space, the hue angle of the color reflected by the initial color information is an initial hue angle, and the hue angle of the color reflected by the actual color information is an actual hue angle; the hue angles of n reference colors are reference hue angles;

[0009] In the YUV color space, the difference between the initial hue angle and the reference hue angle closest to it is an initial angle; the difference between the reference hue angle closest to the initial hue angle and the actual hue angle is an actual angle; the initial angle of the same target pixel is greater than the actual angle.

[0010] In an example embodiment of the present disclosure, in the YUV color space, the initial hue angle and the actual hue angle of the same target pixel satisfy the following relationship:

[0011] ;

[0012] U t and V t are the coordinates of the color reflected by the initial color information, U t ＇ and V t ＇ are the coordinates of the color reflected by the actual color information; and Δθ is the conversion angle, which is the difference between the initial hue angle and the actual hue angle.

[0013] In an example embodiment of the present disclosure, the initial angle is positively correlated with the conversion angle.

[0014] According to an aspect of the present disclosure, a liquid crystal display device is provided, which includes a liquid crystal display panel and a control circuit, the liquid crystal display panel including a plurality of pixels;

[0015] The control circuit includes a first working mode, in which the control circuit is configured to receive initial color information of each pixel of an mth frame of image, and control the liquid crystal display panel to display n different sub-field images of different tones in sequence according to the initial color information, so as to obtain the mth frame of image; m and n are positive integers, and n≥2; the initial color information of each pixel includes initial gray scales in n tones;

[0016] In the mth frame of image, the actual color information of each pixel includes actual gray scales in n tones; at least part of the pixels are target pixels, and the actual color information of the same target pixel reflects a color with a luminance lower than that of the color reflected by the initial color information of the same target pixel.

[0017] In an example embodiment of the present disclosure, in the YUV color space, the hue angle of the color reflected by the initial color information is an initial hue angle, the hue angle of the color reflected by the actual color information is an actual hue angle, the hue angle of a reference color of n reference colors is a reference hue angle, and the ratio of the initial gray scale to the actual gray scale of the same tone of the same target pixel is a reduction coefficient.

[0018] In the YUV color space, the difference between the initial hue angle and the closest reference hue angle is an initial angle, and the initial angle of the same target pixel is positively correlated with the reduction coefficient.

[0019] According to one aspect of the present disclosure, there is provided a liquid crystal display device, comprising a liquid crystal display panel and a control circuit, the liquid crystal display panel comprising a plurality of pixels;

[0020] The control circuit comprises a first working mode, configured to receive initial color information of each pixel of an mth frame of image, control the liquid crystal display panel to display n different tone sub-field images in sequence according to the initial color information to obtain the mth frame of image; m and n are positive integers, and n≥2; the initial color information of each pixel comprises initial gray scales at n tones;

[0021] In the mth frame of image, actual color information of each pixel comprises actual gray scales at n tones; at least part of the pixels are target pixels, the target pixels comprising first target pixels and second target pixels; a luminance of the initial color information reflecting the first target pixels is greater than a luminance threshold, and a luminance of the initial color information reflecting the second target pixels is less than the luminance threshold; an actual gray scale of a same tone of the same first target pixel is less than its initial gray scale, and an actual gray scale of a same tone of the same second target pixel is greater than its initial gray scale.

[0022] In an exemplary embodiment of the present disclosure, in a YUV color space, a ratio of coordinates of a color reflecting actual color information of the first target pixels to coordinates of a color reflecting initial color information of the first target pixels is a first adjustment coefficient, and a ratio of a luminance reflecting actual color information of the first target pixels to a luminance reflecting initial color information of the first target pixels is the first adjustment coefficient;

[0023] A ratio of coordinates of a color reflecting actual color information of the second target pixels to coordinates of a color reflecting initial color information of the second target pixels is a second adjustment coefficient, and a ratio of a luminance reflecting actual color information of the second target pixels to a luminance reflecting initial color information of the second target pixels is the second adjustment coefficient;

[0024] The second adjustment coefficient is greater than the first adjustment coefficient.

[0025] In an exemplary embodiment of the present disclosure, the first adjustment coefficient and the second adjustment coefficient are both negatively correlated with a luminance reflecting actual color information of the target pixels.

[0026] In an exemplary embodiment of the present disclosure, the control circuit further comprises a second working mode, and in the second working mode, configured to, if the initial color information of the mth frame of image is received, control the liquid crystal display device to display n sub-field images in sequence to obtain the mth frame of image;

[0027] In the second working mode, the actual gray scale of the pixel is the initial gray scale of the pixel.

[0028] In an exemplary embodiment of the present disclosure, the liquid crystal display panel comprises:

[0029] An array substrate and an opposite substrate are oppositely arranged;

[0030] A liquid crystal layer is arranged between the array substrate and the opposite substrate;

[0031] The liquid crystal display device further comprises:

[0032] A backlight module is arranged on a side of the array substrate away from the opposite substrate, and comprises n kinds of light emitting devices with different colors, wherein the backlight module emits light with the same color when displaying the same sub-field image, and emits light with different colors when displaying different sub-field images.

[0033] The control circuit is connected with the array substrate and the backlight module.

[0034] According to an aspect of the present disclosure, an image display method is provided for a liquid crystal display device, wherein the liquid crystal display device comprises a liquid crystal display panel and a control circuit, and the liquid crystal display panel comprises a plurality of pixels; the image display method comprises:

[0035] In a first working mode:

[0036] Initial color information of each pixel receiving the mth image is received; the initial color information of each pixel comprises initial gray scales in n different color tones; m and n are positive integers, and n≥2;

[0037] Actual color information of the pixels is determined according to the initial color information; the actual color information of each pixel comprises actual gray scales in n color tones; at least part of the pixels are target pixels, the actual color information of the target pixels reflects a color different from the color reflected by the initial color information, and the difference between the actual gray scales of the same target pixel is greater than the difference between the initial gray scales;

[0038] The liquid crystal display panel is controlled to display sub-field images of n color tones in sequence according to the actual color information, so as to obtain the mth image.

[0039] In an exemplary embodiment of the present disclosure, the actual color information of the pixels is determined according to the initial color information; comprising:

[0040] The initial gray scales are placed in a YUV color space; in the YUV color space, the hue angle of the color reflected by the initial color information is an initial hue angle; and the hue angles of n reference colors are reference hue angles.

[0041] determining a reference hue angle closest to the initial hue angle in the YUV color space; a difference between the initial hue angle and the reference hue angle closest to the initial hue angle is an initial angle;

[0042] determining an actual hue angle according to the initial angle; a difference between the reference hue angle closest to the initial hue angle and the actual hue angle is an actual angle, and the initial angle is greater than the actual angle;

[0043] determining actual color information according to a color reflected by the actual hue angle.

[0044] According to one aspect of the present disclosure, an image display method is provided for a liquid crystal display device, the liquid crystal display device comprising a liquid crystal display panel and a control circuit, the liquid crystal display panel comprising a plurality of pixels; the image display method comprising:

[0045] in a first working mode:

[0046] receiving initial color information of each of the pixels of an mth frame of image; the initial color information of each of the pixels comprising initial gray scales in n different hues; m and n are positive integers, and n≥2;

[0047] determining actual color information of the pixels according to the initial color information; the actual color information of each of the pixels comprising actual gray scales in the n hues; at least part of the pixels are target pixels, and the actual color information of the same target pixel reflects a color with a luminance less than that of a color reflected by the initial color information of the same target pixel;

[0048] controlling the liquid crystal display panel to display n sub-field images of the n hues in sequence according to the actual color information, so as to obtain the mth frame of image.

[0049] In an exemplary embodiment of the present disclosure, determining the actual color information of the pixels according to the initial color information comprises:

[0050] placing the initial gray scales in a YUV color space; in the YUV color space, a hue angle of a color reflected by the initial color information is an initial hue angle; and taking hue angles of n reference colors as reference hue angles;

[0051] determining a reduction coefficient according to the initial hue angle and the reference hue angle closest to the initial hue angle;

[0052] determining initial actual gray scales of the pixels according to the initial gray scales of at least part of the pixels and the reduction coefficient; the reduction coefficient being a ratio of the initial gray scale of the same hue of the same target pixel to the actual gray scale of the same hue of the same target pixel.

[0053] According to one aspect of the present disclosure, there is provided an image display method for a liquid crystal display device, the liquid crystal display device comprising a liquid crystal display panel and a control circuit, the liquid crystal display panel comprising a plurality of pixels; the image display method comprising:

[0054] In the first operation mode:

[0055] receiving initial color information of each of the pixels of the mth frame of image; the initial color information of each of the pixels comprising initial gray scales in n different color tones; m and n are positive integers, n≥2;

[0056] determining a first adjustment coefficient and a second adjustment coefficient according to initial brightness of each of the pixels reflected by the initial color information of each of the pixels and a preset brightness and adjustment coefficient correspondence; the second adjustment coefficient is greater than the first adjustment coefficient, and the first adjustment coefficient is greater than 0 and less than 1; the second adjustment coefficient is greater than 1;

[0057] determining actual gray scales of the first pixels with initial brightness greater than a brightness threshold according to the first adjustment coefficient; determining actual gray scales of the second pixels with brightness less than the brightness threshold according to the second adjustment coefficient; obtaining actual color information of the pixels, so that the actual gray scales of the first pixels are less than the initial gray scales thereof, and the actual gray scales of the second pixels are greater than the initial gray scales thereof;

[0058] controlling the liquid crystal display panel to display n sub-field images of the color tones in sequence according to the actual color information, so as to obtain the mth frame of image.

[0059] In an exemplary embodiment of the present disclosure, determining actual gray scales of the first pixels with initial brightness greater than a brightness threshold according to the first adjustment coefficient; determining actual gray scales of the second pixels with brightness less than the brightness threshold according to the second adjustment coefficient; comprises:

[0060] In the YUV color space, coordinates of colors and initial brightness reflected by part of the initial color information are multiplied by the first adjustment coefficient to obtain actual color information of the first pixels; coordinates of colors and initial brightness reflected by part of the initial color information are multiplied by the second adjustment coefficient to obtain actual color information of the pixels.

[0061] According to one aspect of the present disclosure, there is provided an electronic device comprising the liquid crystal display device as described in any one of the above.

[0062] The liquid crystal display device, the image display method and the electronic equipment of the present disclosure can realize field sequential display by mixing colors in time through n sub-field images displayed in sequence, without using the way of mixing colors in space, without setting a color film, improving light efficiency, and without setting sub-pixels of different colors, which is conducive to improving resolution. At the same time, at least one of the following beneficial effects can be achieved:

[0063] I. In the first working mode, for a pixel, the difference between the initial gray scales can be increased to obtain the actual gray scale, and then the sub-field image is displayed according to the actual gray scale. Compared with directly displaying the sub-field image according to the initial gray scale, the increase of the difference between the actual gray scales can make the color of the pixel in the mth frame image closer to the white point, thereby weakening the color separation phenomenon.

[0064] II. In the first working mode, the initial gray scale of the same color tone of the same target pixel can be reduced to obtain the actual gray scale, and then the sub-field image is displayed according to the actual gray scale. Compared with directly displaying the sub-field image according to the initial gray scale, the reduction of the gray scale can reduce the brightness of the pixel in the mth frame image, and the reduction of the brightness can make the color separation more difficult to be observed visually, thereby weakening the color separation phenomenon.

[0065] III. In the first working mode, the first adjustment coefficient and the second adjustment coefficient can be determined according to the initial brightness determined based on the initial color information and the preset brightness adjustment coefficient relationship, wherein the first adjustment coefficient is greater than 0 and less than 1, and the second adjustment coefficient is greater than 1. At the same time, the first adjustment coefficient can be used to reduce the initial gray scale of the pixel with the initial brightness greater than the brightness threshold to obtain the actual gray scale, and the second adjustment coefficient can be used to reduce the initial gray scale of the pixel with the initial brightness less than the brightness threshold to obtain the actual gray scale; thereby reducing the brightness of the pixel with higher initial brightness, increasing the brightness of the pixel with lower initial brightness, and further reducing the brightness difference, i.e. reducing the contrast, which can make the color separation more difficult to be observed visually, thereby weakening the color separation phenomenon.

[0066] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0067] The drawings incorporated into the specification and forming part of the specification, show embodiments consistent with the present disclosure, and together with the specification, serve to explain the principles of the present disclosure. It is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor.

[0068] Figure 1 The structure schematic diagram of an embodiment of the liquid crystal display device of the present disclosure.

[0069] Figure 2 A circuit schematic diagram for an embodiment of the liquid crystal display device of the present disclosure.

[0070] Figure 3 A partial schematic diagram of the mth frame of images in a first operation mode of the liquid crystal display device of the present disclosure.

[0071] Figures 4-6 A partial schematic diagram of the mth frame of images in a first operation mode of the liquid crystal display device of the present disclosure. Figure 3 A schematic diagram of three subfield images of the mth frame of images in the present disclosure.

[0072] Figure 7 A schematic diagram of an embodiment of the electronic device of the present disclosure.

[0073] Figure 8 A schematic diagram of the placement of initial color information in a YUV color space in the liquid crystal display device of the present disclosure.

[0074] Figure 9 A schematic diagram of the relationship between a conversion angle and an initial phase angle in a first liquid crystal display device of the present disclosure.

[0075] Figure 10 A schematic diagram of the relationship between a reduction coefficient and an initial phase angle in a second liquid crystal display device of the present disclosure.

[0076] Figure 11 A schematic diagram of the correspondence between an adjustment coefficient and an initial luminance in a third liquid crystal display device of the present disclosure. DETAILED DESCRIPTION

[0077] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings; however, these embodiments can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the specification. Additionally, the drawings are not necessarily drawn to scale.

[0078] The terms "one", "a", "an", "said", and "the" are used to indicate the existence of one or more than one element / portion / etc.; the terms "include" and "has" are used to indicate an open-ended inclusion of one or more elements / portion / etc. in the description of a process, a method, an article, or a composition of matter; and the terms "first", "second", and "third", etc. are used merely as labels, not as quantities.

[0079] An embodiment of the present disclosure provides a liquid crystal display device, such as Figure 1 and Figure 2As shown, the liquid crystal display device can include a liquid crystal display panel PNL and a control circuit CU, wherein:

[0080] The liquid crystal display panel PNL has a plurality of pixels arranged in an array, and the pixel is the minimum light-emitting unit. The liquid crystal display panel PNL can include an array substrate TB, an opposite substrate FB, and a liquid crystal layer LL disposed between the array substrate TB and the opposite substrate FB.

[0081] The liquid crystal display panel PNL further includes a pixel electrode and a common electrode. The pixel electrode can be disposed on the array substrate TB, and the common electrode can be disposed on the array substrate TB or the opposite substrate FB, and a pixel includes a pixel electrode. The array substrate TB has a driving circuit, and the control circuit CU can be disposed on the array substrate TB and can control the voltage between the pixel electrode and the common electrode through the driving circuit, so as to control the deflection degree of the liquid crystal molecules of the liquid crystal layer LL, and further control the light transmittance of each pixel, thereby realizing the adjustment of the gray scale of each pixel.

[0082] The liquid crystal display device can further include a backlight module BLU, which can be disposed on the side of the array substrate TB away from the opposite substrate FB. The backlight module BLU can emit light to the array substrate TB under the control of the control circuit CU.

[0083] In some embodiments, the opposite substrate FB can include a color filter layer, and the color filter layer includes a plurality of filter parts, and a pixel includes a filter part. Through the filtering effect of the filter part, a pixel emits monochromatic light, and the light-emitting colors of different pixels can be different. However, the color filter layer will cause a large loss of light, and in the case of not increasing the power of the backlight module BLU, the brightness of the liquid crystal display device will be reduced. If the brightness is to be improved, the power of the backlight module BLU needs to be increased, resulting in increased power consumption.

[0084] In order to improve the light extraction efficiency without increasing power consumption, in some embodiments, the color filter layer can not be arranged on the opposite substrate FB, so as to reduce light loss and improve the light extraction efficiency. In order to realize color display, the backlight module BLU can include n different colors of light emitting devices, and the number of light emitting devices of the same color is not particularly limited and can be one or more. The color of the light emitted by the backlight module BLU is the color tone of the formed picture. On this basis, when displaying an image, field sequential display can be used. For example, n subfield images are displayed in sequence within one frame of time, each subfield image is a monochrome image, and the gray scale of different pixels in each subfield image can be different, and the gray scale of the same pixel in different subfield images can be different. The backlight module BLU emits light of the same color when displaying the same subfield image, and emits light of different colors when displaying different subfield images. For example, when displaying each subfield image, only one color of light emitting device in the backlight module BLU emits light, so that each subfield image has only one color tone, i.e. one color. Thus, based on the visual persistence phenomenon, one frame of image can be obtained.

[0085] As shown in Figure 2 In some embodiments of the present disclosure, the control circuit CU can be used to execute one or more working modes, including a first working mode, in which:

[0086] The control circuit CU is configured to receive initial color information of each pixel of the mth frame of image, and control the liquid crystal display panel PNL to display n different color tone subfield images in sequence according to the initial color information, so as to obtain the mth frame of image. m and n are positive integers, and n≥2.

[0087] The initial color information of each pixel can include initial gray scales in n color tones. For one pixel of one frame of image, the initial color information can be displayed in sequence by the gray scales of the n color tones to realize time color mixing, so that the pixel presents a predetermined color. For example, n=3, and the three color tones are red, green and blue. The initial color information of each pixel of the mth frame of image can include initial gray scales of red, green and blue.

[0088] Figures 4 to 6 Three subfield images are shown. In different subfield images, the light emitting pixels P form a plurality of stripe patterns, and the light emitting pixels in different subfield images can be different or can overlap, i.e. the same pixel can emit light in each subfield image. The three subfield images can form Figure 3 The mth frame of image is shown. It should be noted that Figure 3 The three subfield images and the visual effect formed thereby are only used to illustrate the principle, and do not constitute a limitation on the specific pattern of the subfield image.

[0089] In an embodiment, the backlight module BLU can include three light emitting devices, which can respectively emit red light, green light and blue light. One frame of image can be divided into three sub-field images, the color tones of the patterns of the three sub-field images are respectively red, green and blue, and the three sub-field images are displayed in sequence, which can form one frame of image in visual effect.

[0090] As shown in FIG. 1, the control circuit CU can be connected with the array substrate TB and the backlight module BLU, and used to control the light emitting of the backlight module BLU and the deflection degree of the liquid crystal, i.e. the color and gray scale of each pixel. The control circuit CU can include a timing controller, a gate driving circuit, a source driving circuit, a backlight control circuit, etc., and the constitution thereof is not specially limited herein. Figure 2

[0091] The inventors find that, when the field sequential display is adopted, since one frame of image needs to be mixed by multiple sub-field images displayed at different times, when the user blinks, scans or the target in the picture moves, the user can simultaneously observe the red, green and blue color tones in the picture, i.e. the color separation phenomenon occurs.

[0092] The inventors find multiple factors affecting the color separation through research, which can be used to improve the color separation phenomenon, and the following is exemplarily described:

[0093] The first liquid crystal display panel of the present disclosure

[0094] In the first working mode, the control circuit CU can process the initial color information of at least part of the pixels of the mth frame of image to obtain the actual color information of the pixels, and the actual color information of each pixel includes actual gray scales in n color tones, and one actual gray scale corresponds to one initial gray scale in the same color tone. Meanwhile, n field sequential images can be generated according to the actual gray scales of the actual color information, each field sequential image is in the same color tone, and the color tones of different field sequential images are different, thereby obtaining the mth frame of image.

[0095] In the mth frame of image, the pixels whose initial gray scales are processed can be defined as target pixels, and the actual color information of the target pixels after processing reflects a color different from the color reflected by the initial color information, and the difference between the actual gray scales of the same target pixel is greater than the difference between the initial gray scales thereof.

[0096] ​The difference of the initial gray scale and the actual gray scale of a target pixel can be represented by the difference of different color tones, for example, n=3, the color tones of the initial gray scale and the actual gray scale are red (R), green (G) and blue (B), the difference of the initial gray scale can be represented by the difference between the largest one and the smallest one of the initial gray scale, or the average of the difference between each initial gray scale, or the difference between the two closest initial gray scales. Further, for example, the initial gray scale of one initial color information is (R=255, G=255, B=255), and the initial gray scale of another initial color information is (R=255, G=10, B=10), the difference of the gray scale of (R=255, G=10, B=10) is greater than that of (R=255, G=255, B=255). The difference of the actual gray scale is represented in the same way as the difference of the initial gray scale, which will not be described in detail here.

[0097] In some embodiments of the present disclosure, the initial color information can be converted from the RGB color space to the YUV color space, and the initial color information is converted in the YUV space to obtain the actual color information, and then the actual color information is converted to the RGB color space to display the field sequential image according to each actual gray scale. Details are as follows:

[0098] The initial color information of a target pixel can be converted from the RGB space to the YUV space by the following formula:

[0099] ;

[0100] is a conversion matrix, R, G and B are the initial color information of the target pixel in the RGB color space, Y, U and V are the initial color information in the YUV color space, Y is the initial brightness of the target sub-pixel, and the specific conversion principle will not be described here.

[0101] As shown in Figure 8 , in the YUV color space, the hue angle of the color reflecting the initial color information can be defined as the initial hue angle θs, and the hue angle of the color reflecting the actual color information can be defined as the actual hue angle θa. At the same time, in the YUV space, the hue angle of the n reference colors can be defined as the reference hue angle, the n reference axes passing through the origin can be used to represent the reference colors, and a plurality of auxiliary colors different from the reference colors can be selected, and the auxiliary colors can be represented by the auxiliary axes passing through the origin, so that the YUV color space can be divided into a plurality of regions by the auxiliary colors and the reference colors.

[0102] For example, as shown in Figure 9As shown, n can be 3, the reference colors are red, green and blue, and the three reference axes respectively represent red (R axis), green (G axis) and blue (B axis); the number of auxiliary colors is three, and the three auxiliary axes are respectively magenta (M axis), yellow (Y axis) and cyan (C axis). The YUV color space can be divided into six regions by the three reference axes and the three auxiliary axes. Meanwhile, the horizontal coordinate axis of the YUV space is the U axis, and the vertical coordinate axis is the V axis, which are different from the aforementioned reference axes and auxiliary axes.

[0103] Further, under the YUV color space, the initial color information and the actual color information of the same target pixel satisfy the following relationship:

[0104] ;

[0105] U t and V t are the coordinates of the color reflected by the initial color information, U t ＇ and V t ＇ are the coordinates of the color reflected by the actual color information; Δθ is the conversion angle, which is the difference between the initial hue angle θs and the actual hue angle.

[0106] Under the YUV color space, after obtaining the initial color information of a target pixel and converting it to the YUV color space, the initial hue angle θs of the color reflected by the initial color information can be determined, and the initial hue angle θs is used as a reference to rotate a certain angle to the closest reference axis to obtain the actual hue angle, and the angle is the conversion angle Δθ; compared with the initial hue angle θs, the actual hue angle is closer to the reference hue angle, that is, the difference between the color of the initial color information and the reference color can be reduced, thereby obtaining the actual color information.

[0107] The difference between the initial hue angle θs and the closest reference hue angle can be defined as the initial angle, and the difference between the closest reference hue angle of the initial hue angle θs and the actual hue angle can be defined as the actual angle. The initial angle of the same target pixel is greater than the actual angle. The initial angle can be positively correlated with the conversion angle Δθ, that is, the greater the initial angle, the greater the conversion angle Δθ, that is, the greater the convergence to the reference axis, that is, the initial angle is different, the conversion angle Δθ is different, and the difference between the initial gray scale and the actual gray scale is also different. Since the color of the reference axis is the greatest difference in gray scale, the difference between the gray scales can be increased in this way, and the actual gray scale with greater difference is used to replace the initial gray scale.

[0108] In order to increase the smoothness of the actual gray scale and avoid sudden changes affecting the picture quality, the conversion angle and the initial hue angle θs can satisfy the following relationship:

[0109] For example, Figure 9As shown, in the YUV color space, if the initial hue angle θs is located between the hue angle of red (R axis) and the hue angle of yellow (Y axis), between the hue angle of green (G axis) and the hue angle of cyan (C axis), or between the hue angle of blue (B axis) and the hue angle of magenta (M axis); the conversion angle Δθ is positively correlated with the initial hue angle θs.

[0110] If the initial hue angle θs is located between the hue angle of magenta and the hue angle of red, between the hue angle of yellow and the hue angle of green, or between the hue angle of cyan and the hue angle of blue; the conversion angle Δθ is negatively correlated with the initial hue angle θs.

[0111] Figure 9 θs in the above formula is an initial hue angle, which is not limited to a specific angle, i.e., the hue angle is the angle between the ray from the color point and the origin and the U axis.

[0112] For example, as shown in the following formula, between two adjacent reference axes, the initial hue angle θs and the conversion angle Δθ can satisfy the following relationship: Figure 9

[0113] Δθ=aθs+bθs+c; 2

[0114] a, b and c are constants, and a is a negative number.

[0115] Of course, in other embodiments of the present disclosure, between two adjacent reference axes, the initial hue angle θs and the conversion angle Δθ can also have a linear relationship or other gradual relationship, as long as the above positive correlation and negative correlation relationship is met.

[0116] The target pixel can be a part of the pixels or all of the pixels. For example, if the color reflected by the initial color information of each pixel is not on the reference axis, all the pixels can be target pixels, and the conversion from the initial gray scale to the actual gray scale is performed. If the color reflected by the initial color information of part of the pixels is on the reference axis, for example, in the YUV space, the initial color information of part of the pixels determines the color as red, green or blue, then for these part of the pixels, the initial gray scale is the actual gray scale, and the above conversion is not needed, and the initial gray scale can be directly used for displaying the mth frame of image.

[0117] In addition, in the mth frame of image, if the color reflected by the initial color information of part of the pixels is on the auxiliary axis, a conversion rule can be preset, for example, the initial hue angle θs is rotated by a rotation angle along the clockwise or counterclockwise direction towards the reference axis to obtain the actual hue angle.

[0118] Based on the above first liquid crystal display device, the image display method is described as follows:

[0119] ​​The image display method can comprise: performing steps S110-S130 in the first working mode, wherein:

[0120] Step S110, receiving initial color information of each pixel of the mth frame of image; the initial color information of each pixel comprises initial gray scales in n different hues; m and n are positive integers, and n≥2.

[0121] Step S120, determining actual color information of the pixels according to the initial color information; the actual color information of each pixel comprises actual gray scales in n hues; at least part of the pixels are target pixels, the actual color information of the target pixels reflects colors different from the colors reflected by the initial color information, and the difference between the actual gray scales of the same target pixel is greater than the difference between the initial gray scales.

[0122] In some embodiments of the present disclosure, the step of determining the actual color information of the pixels according to the initial color information, i.e., step S120, can comprise steps S1210-S1240, wherein:

[0123] Step S1210, placing the initial gray scales in a YUV color space; in the YUV color space, the hue angle of the color reflected by the initial color information is an initial hue angle θs; the hue angles of the n reference colors are reference hue angles.

[0124] Step S1220, determining the reference hue angle closest to the initial hue angle θs in the YUV color space; the difference between the initial hue angle θs and the reference hue angle closest to the initial hue angle θs is an initial angle.

[0125] Step S1230, determining an actual hue angle according to the initial angle; the difference between the reference hue angle closest to the initial hue angle θs and the actual hue angle is an actual angle, and the initial angle is greater than the actual angle.

[0126] The initial hue angle θs can be rotated by a certain angle (rotation angle) to the closest reference axis, so as to obtain the actual hue angle.

[0127] Step S1240, determining the actual color information according to the color reflected by the actual hue angle.

[0128] Step S130, controlling the liquid crystal display panel to display n-hue sub-field images in sequence according to the actual color information, so as to obtain the mth frame of image.

[0129] The details of the image display method have been described in the first liquid crystal display device embodiment above, and will not be repeated here.

[0130] Second liquid crystal display device

[0131] In the first working mode, the control circuit can process initial color information of at least part of pixels of the mth frame of image to obtain actual color information of the pixels, and the actual color information of each pixel includes actual gray scales in n color tones, and each actual gray scale corresponds to an initial gray scale in the same color tone. Meanwhile, n field sequential images can be generated according to the actual gray scales of the actual color information, each field sequential image is in the same color tone, and the color tones of different field sequential images are different, so as to obtain the mth frame of image.

[0132] In the mth frame of image, the pixels whose initial gray scales are processed can be defined as target pixels, and after processing, the actual color information of the same target pixel reflects a color with a luminance smaller than that of the color reflected by the initial color information. The ratio of an initial gray scale in the initial color information to an actual gray scale in the actual color information of the same color tone is a reduction coefficient K, the reduction coefficient K is smaller than 1 and larger than 0, the initial gray scale can be reduced by the reduction coefficient K to obtain the actual gray scale. Meanwhile, since each initial gray scale can be multiplied by the same reduction coefficient K to obtain the actual gray scale, the color reflected by the initial color information is the same as the color reflected by the actual color information, and only the luminance is reduced.

[0133] In some embodiments of the present disclosure, different reduction coefficients K can be used to derive the actual color information for different initial color information. For example, the initial color information can be converted from the RGB color space to the YUV color space, and the conversion manner can refer to the conversion of the RGB color space and the YUV color space in the first liquid crystal display device, which will not be described in detail herein.

[0134] In the YUV color space, the hue angle of the color reflected by the initial color information is an initial hue angle θs, the hue angle of the color reflected by the actual color information is an actual hue angle, and the hue angles of n reference colors are reference hue angles. The difference between the initial hue angle θs and the reference hue angle closest to the initial hue angle θs is an initial angle. The reduction coefficient K can be selected according to the size of the initial angle, and the initial angle and the reduction coefficient K of the same target pixel can be in a negative correlation, that is, the larger the initial angle, the larger the reduction coefficient K, that is, the farther the distance from the reference axis, the larger the reduction coefficient K.

[0135] Based on the above-mentioned second liquid crystal display device, the image display method will be described below:

[0136] The image display method can include: performing steps S210-S230 in the first working mode, wherein:

[0137] Step S210, receiving initial color information of each pixel of the mth frame of image; the initial color information of each pixel includes initial gray scales in n different color tones; m and n are positive integers, and n≥2;

[0138] Step S220: Determine the actual color information of the pixel based on the initial color information; the actual color information of each pixel includes the actual grayscale under n hues; at least some pixels are target pixels, and the actual grayscale of the same target pixel under the same hue is less than its initial grayscale.

[0139] Determine the actual color information of the pixel based on the initial color information; that is, step S220 may include:

[0140] Step S2210: Place the initial grayscale in the YUV color space; in the YUV color space, the hue angle of the color reflected by the initial color information is the initial hue angle θs; use the hue angles of n reference colors as the reference hue angles;

[0141] Step S2220: Determine the reduction factor K based on the initial hue angle θs and its closest reference hue angle;

[0142] Step S2230: Determine the initial actual gray level of a pixel based on the initial gray level of at least some pixels and the reduction factor K; the reduction factor K is the ratio of the initial gray level of the same hue of the same target pixel to its actual gray level.

[0143] Step S230: Control the liquid crystal display panel to sequentially display n sub-field images of different hues according to the actual color information to obtain the m-th frame image.

[0144] To increase the smoothness of the actual grayscale and avoid abrupt changes that could affect image quality, the reduction factor K and the initial hue angle θs can satisfy the following relationship:

[0145] like Figure 8 As shown, in the YUV color space, if the initial hue angle θs is located between the hue angles of red and yellow, green and cyan, or blue and magenta, then the reduction coefficient K is positively correlated with the initial hue angle θs.

[0146] If the initial hue angle θs is located between the hue angles of magenta and red, yellow and green, or cyan and blue, then the reduction coefficient K is negatively correlated with the initial hue angle θs.

[0147] For example, such as Figure 10 As shown, between two adjacent reference axes, the initial hue angle θs and the reduction factor K can satisfy the following relationship:

[0148] K=aθs 2 +bθs+c;

[0149] a, b, and c are constants, and a is a positive number.

[0150] Of course, in other embodiments of the present disclosure, the initial hue angle θs and the reduction coefficient K can also have a linear relationship or other gradual relationship between two adjacent reference axes, as long as the above-mentioned positive and negative relationships are met.

[0151] The target pixel described above can be a part of each pixel or all of the pixels. For example, if the color reflected by the initial color information of each pixel is not on the reference axis, all of the pixels can be target pixels and the conversion from the initial gray scale to the actual gray scale described above is performed. If the color reflected by the initial color information of part of the pixels is on the reference axis, for example, the initial color information of part of the pixels determines the color to be red, green or blue in the YUV space, the initial gray scale is the actual gray scale for these part of the pixels and the conversion described above is not needed. When the mth frame of image is displayed, the initial gray scale is directly used for display.

[0152] In addition, in the mth frame of image, if the color reflected by the initial color information of part of the pixels is on the auxiliary axis, the reduction coefficient can be the maximum value.

[0153] Third liquid crystal display device

[0154] In the first working mode, the control circuit can process the initial color information of at least part of the pixels of the mth frame of image to obtain the actual color information of these pixels. The actual color information of each pixel includes actual gray scales in n color tones, and an actual gray scale corresponds to an initial gray scale in the same color tone. At the same time, n field sequential images can be generated according to the actual gray scales of the actual color information. Each field sequential image is in the same color tone, and the color tones of different field sequential images are different, thereby obtaining the mth frame of image.

[0155] In the mth frame of image, a luminance threshold can be used as a basis for comparison. When the luminance of the color reflected by the initial color information is initial luminance Gray, if the initial luminance Gray is greater than the luminance threshold Lm, it can be considered that the luminance is high, and if the initial luminance Gray is less than the luminance threshold Lm, it can be considered that the luminance is low. Based on this, the target pixels can be defined according to the pixels whose initial luminance Gray is different from the luminance threshold Lm, including the first target pixels and the second target pixels. The first target pixels are the target pixels whose initial luminance Gray is less than the luminance threshold Lm, and the second target pixels are the target pixels whose initial luminance Gray is greater than the luminance threshold Lm.

[0156] The actual gray scale of the same color tone of the same first target pixel can be less than the initial gray scale, that is, the target pixel with higher brightness can reduce the brightness so that the actual gray scale is less than the initial gray scale. At the same time, the actual gray scale of the same color tone of the same second target pixel can be greater than the initial gray scale, that is, the target pixel with lower brightness can increase the brightness so that the actual gray scale is greater than the initial gray scale. Thus, the contrast of at least part of the pixels of the mth frame of image can be reduced, thereby weakening the color separation phenomenon.

[0157] In some embodiments of the present disclosure, the initial color information can be converted from the RGB color space to the YUV color space, and the conversion manner can refer to the conversion of the RGB color space and the YUV color space in the first liquid crystal display device, which will not be described in detail herein.

[0158] In the YUV color space, the first adjustment coefficient and the second adjustment coefficient can be determined according to the relationship between the initial color information of the first target pixel and the second target pixel and the pre-set initial brightness Gray and the adjustment coefficient W. The first adjustment coefficient can be multiplied by Y, U and V reflecting the initial color information to obtain the actual color information, and then converted to the RGB color space, so that the ratio of the coordinates of the color reflecting the actual color information of the first target pixel to the coordinates of the color reflecting the initial color information of the first target pixel is the first adjustment coefficient, and the ratio of the brightness reflecting the actual color information of the first target pixel to the brightness reflecting the initial color information of the first target pixel is the first adjustment coefficient. Similarly, the second adjustment coefficient can be multiplied by Y, U and V reflecting the initial color information to obtain the actual color information, so that the ratio of the coordinates of the color reflecting the actual color information of the second target pixel to the coordinates of the color reflecting the initial color information of the second target pixel is the second adjustment coefficient, and the ratio of the brightness reflecting the actual color information of the second target pixel to the brightness reflecting the initial color information of the second target pixel is the second adjustment coefficient.

[0159] The initial brightness Gray can be calculated by the following formula:

[0160] Gray = (k1×R +k2×G + k3×B);

[0161] R, G and B are the gray scales of red, green and blue, k1 can be 0.3, k2 can be 0.59, and k3 can be 0.11. k1, k2 and k3 can also take other values.

[0162] The adjustment coefficient W is negatively related to the initial brightness Gray, that is, the smaller the initial brightness Gray, the smaller the adjustment coefficient W. The corresponding relationship between the initial brightness Gray and the adjustment coefficient W described above can be determined based on empirical data, experimental data, etc., which is not specially limited herein.

[0163] The second adjustment coefficient can be greater than the first adjustment coefficient, the first adjustment coefficient is less than 1 and greater than 0, and the first adjustment coefficient can be greater than 1.

[0164] Based on the third liquid crystal display device described above, the image display method is described as follows:

[0165] The image display method can include: performing steps S310-S330 in the first working mode, wherein:

[0166] In step S310, initial color information of each pixel of the mth frame of image is received; the initial color information of each pixel includes initial gray scales in n different color tones; m and n are positive integers, and n is greater than or equal to 2.

[0167] In step S320, the first adjustment coefficient and the second adjustment coefficient are determined according to the initial brightness of each pixel reflected by the initial color information of each pixel and a preset brightness and adjustment coefficient corresponding relationship; the second adjustment coefficient is greater than the first adjustment coefficient, and the first adjustment coefficient is greater than 0 and less than 1; and the second adjustment coefficient is greater than 1.

[0168] In step S330, the actual gray scale of the first pixel with the initial brightness greater than the brightness threshold is determined according to the first adjustment coefficient; the actual gray scale of the second pixel with the initial brightness less than the brightness threshold is determined according to the second adjustment coefficient; and the actual color information of the pixel is obtained, so that the actual gray scale of the first pixel is less than the initial gray scale, and the actual gray scale of the second pixel is greater than the initial gray scale.

[0169] In the YUV color space, the coordinates of the color reflected by part of the initial color information and the initial brightness are multiplied by the first adjustment coefficient to obtain the actual color information of the first pixel; and the coordinates of the color reflected by part of the initial color information and the initial brightness are multiplied by the second adjustment coefficient to obtain the actual color information of the pixel.

[0170] In step S340, the actual color information is used to control the liquid crystal display panel to display n sub-field images of different color tones in sequence to obtain the mth frame of image.

[0171] In some embodiments of the present disclosure, only one of the above-mentioned three schemes for improving the color separation phenomenon can exist, or two or all of them can exist simultaneously.

[0172] In addition, in some embodiments of the present disclosure, the control circuit CU further includes a second working mode, and in the second working mode, the control circuit CU is configured to: if the initial color information of the mth frame of image is received, control the liquid crystal display device to display n sub-field images in sequence to obtain the mth frame of image; m and n are positive integers, and n is greater than or equal to 2. The actual color information of each pixel is the initial color information thereof, and the actual gray scale is the initial gray scale thereof.

[0173] In the second working mode, the initial gray scale can be directly used as the actual gray scale to realize display, without the processing of the initial gray scale in the first working mode.

[0174] The first working mode and the second working mode can be started when a start signal is received. For example, an image of the eyeball of the user can be acquired by the image acquisition device, and the movement speed of the eyeball can be determined by the image processing device according to the image of the eyeball. When the movement speed reaches a speed threshold, the color separation phenomenon is more obvious. At this time, the control circuit CU can be in the first working mode to eliminate the color separation. When the movement speed does not reach the speed threshold, the color separation phenomenon can not be obvious. At this time, the control circuit CU can be in the second working mode, thereby improving the operation efficiency.

[0175] The electronic device can include a liquid crystal display device, and the structure of the liquid crystal display device can be the liquid crystal display device of any of the above embodiments, which will not be described again here.

[0176] As shown in Figure 7 The electronic device further includes an image acquisition device and an image processing device, wherein:

[0177] The image acquisition device CAM can include one or more cameras, and of course, other devices that can acquire image information of human or object features can also be used. The image acquisition device CAM can acquire the image of the eyeball of the user in real time.

[0178] The image processing device CP can be connected with the image acquisition device CAM, and can determine the movement speed of the eyeball according to the image of the eyeball. When the movement speed reaches a speed threshold, a start signal is output to the control circuit CU, so that the control circuit CU is in the first working mode. When the movement speed does not reach the speed threshold, no start signal is output, and the control circuit CU is in the second working mode.

[0179] The image processing device CP can identify the pupil center according to the image of the eyeball, and determine the movement speed of the eyeball according to the change of the position of the pupil center.

[0180] In some embodiments, the electronic device can further include an infrared detection device, which can locate the corneal center of the user by infrared light. The line connecting the corneal center and the pupil center identified by the image processing device is the optical axis of the visual system. The real visual line direction can be obtained according to the included angle between the optical axis and the visual axis. In addition, a hot mirror can be further included to reduce the tracking error without affecting the display of the picture; or the infrared light and the eye image can be transmitted by using a light waveguide.

[0181] In addition, the eyeball tracking can also be realized by other ways, which are not particularly limited here.

[0182] The electronic device of the present disclosure can be a mobile phone, a television, a tablet computer, and can also be a head-mounted display device such as smart glasses, etc., and will not be listed one by one here.

[0183] It should be noted that although the steps of the image display method of the present disclosure are described in a specific order in the accompanying drawings, this does not require or imply that the steps must be performed in this specific order, or that all the steps shown must be performed to achieve the desired results. In addition or alternatively, some steps can be omitted, a plurality of steps can be combined into one step, and / or one step can be divided into a plurality of steps, etc.

[0184] Other embodiments of the present disclosure will be readily apparent to those skilled in the art upon considering the description hereof, and practice of the disclosed application. The present application is intended to cover any variations, uses, or adaptations of the present disclosure following the general principles thereof and including modifications and equivalents that are obvious to those skilled in the art. The specification and examples are to be regarded as exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

Claims

1. A liquid crystal display device, characterized in that, It includes a liquid crystal display panel and a control circuit, wherein the liquid crystal display panel includes a plurality of pixels; The control circuit includes a first operating mode, which is configured to: receive the initial color information of each pixel of the m-th frame image, and control the liquid crystal display panel to sequentially display n sub-field images of different hues according to the initial color information to obtain the m-th frame image; m and n are positive integers, n≥2; the initial color information of each pixel includes the initial grayscale under the n hues; In the m-th frame image, the actual color information of each pixel includes actual gray levels under n hues; at least some of the pixels are target pixels, the actual color information of the target pixels reflects a different color than the initial color information, and the difference between the actual gray levels of the same target pixel is greater than the difference between its initial gray levels; In the YUV color space, the hue angle of the color reflecting the initial color information is called the initial hue angle, and the hue angle of the color reflecting the actual color information is called the actual hue angle; the hue angles of n reference colors are used as reference hue angles. In the YUV color space, the difference between the initial hue angle and its closest reference hue angle is the initial angle; the difference between the reference hue angle closest to the initial hue angle and the actual hue angle is the actual angle; the initial angle of the same target pixel is greater than the actual angle.

2. The liquid crystal display device according to claim 1, characterized in that, In the YUV color space, the initial hue angle and the actual hue angle of the same target pixel satisfy the following relationship: ； U t and V t The coordinates of the color reflected by the initial color information, U t ＇ and V t ＇ It is the coordinate of the color reflected by the actual color information; Δθ is the conversion angle, which is the difference between the initial hue angle and the actual hue angle.

3. The liquid crystal display device according to claim 2, characterized in that, The initial angle is positively correlated with the transformation angle.

4. A liquid crystal display device, characterized in that, It includes a liquid crystal display panel and a control circuit, wherein the liquid crystal display panel includes a plurality of pixels; The control circuit includes a first operating mode, which is configured to: receive the initial color information of each pixel of the m-th frame image, and control the liquid crystal display panel to sequentially display n sub-field images of different hues according to the initial color information to obtain the m-th frame image; m and n are positive integers, n≥2; the initial color information of each pixel includes the initial grayscale under the n hues; In the m-th frame image, the actual color information of each pixel includes actual gray levels under n hues; at least some of the pixels are target pixels, and the brightness of the color reflected by the actual color information of the same target pixel is less than the brightness of the color reflected by its initial color information; In the YUV color space, the hue angle of the color reflecting the initial color information is the initial hue angle, and the hue angle of the color reflecting the actual color information is the actual hue angle; the hue angles of n reference colors are used as reference hue angles; the ratio of the initial grayscale to the actual grayscale of the same hue of the same target pixel is a reduction coefficient. In the YUV color space, the difference between the initial hue angle and its nearest reference hue angle is the initial angle, and the initial angle of the same target pixel is positively correlated with the reduction coefficient.

5. A liquid crystal display device, characterized in that, It includes a liquid crystal display panel and a control circuit, wherein the liquid crystal display panel includes a plurality of pixels; The control circuit includes a first operating mode, which is configured to: receive the initial color information of each pixel of the m-th frame image, and control the liquid crystal display panel to sequentially display n sub-field images of different hues according to the initial color information to obtain the m-th frame image; m and n are positive integers, n≥2; the initial color information of each pixel includes the initial grayscale under the n hues; In the m-th frame image, the actual color information of each pixel includes actual gray levels under n hues; at least some of the pixels are target pixels, and the target pixels include a first target pixel and a second target pixel; the brightness reflecting the initial color information of the first target pixel is greater than a brightness threshold, and the brightness reflecting the initial color information of the second target pixel is less than the brightness threshold; the actual gray level of the same hue of the same first target pixel is less than its initial gray level, and the actual gray level of the same hue of the same second target pixel is greater than its initial gray level.

6. The liquid crystal display device according to claim 5, characterized in that, In the YUV color space, the ratio of the coordinates of the color reflecting the actual color information of the first target pixel to the coordinates of the color reflecting the initial color information of the first target pixel is the first adjustment coefficient, and the ratio of the brightness reflecting the actual color information of the first target pixel to the brightness reflecting the initial color information of the first target pixel is the first adjustment coefficient. The ratio of the coordinates of the color reflecting the actual color information of the second target pixel to the coordinates of the color reflecting the initial color information of the second target pixel is the second adjustment coefficient; the ratio of the brightness reflecting the actual color information of the second target pixel to the brightness reflecting the initial color information of the second target pixel is the second adjustment coefficient. The second adjustment factor is greater than the first adjustment factor.

7. The liquid crystal display device according to claim 6, characterized in that, Both the first adjustment coefficient and the second adjustment coefficient are negatively correlated with the brightness, which reflects the actual color information of the target pixel.

8. The liquid crystal display device according to any one of claims 1-7, characterized in that, The control circuit further includes a second operating mode, and is configured in the second operating mode to: if the initial color information of the m-th frame image is received, control the liquid crystal display device to sequentially display n sub-field images to obtain the m-th frame image; In the second working mode, the actual gray level of the pixel is its initial gray level.

9. The liquid crystal display device according to any one of claims 1-7, characterized in that, The liquid crystal display panel includes: The array substrate and the opposing substrate are arranged opposite each other; A liquid crystal layer is disposed between the array substrate and the opposing substrate; The liquid crystal display device further includes: A backlight module is disposed on the side of the array substrate away from the opposing substrate, and includes n different colored light-emitting devices. The backlight module emits the same color when displaying the same subfield image, and emits different colors when displaying different subfield images. The control circuit is connected to the array substrate and the backlight module.

10. An image display method, characterized in that, A liquid crystal display device, the liquid crystal display device including a liquid crystal display panel and a control circuit, the liquid crystal display panel including a plurality of pixels; the image display method includes: In the first working mode: Receive the initial color information of each pixel in the m-th frame image; the initial color information of each pixel includes n initial gray levels under different hues; m and n are positive integers, n≥2; The actual color information of the pixel is determined based on the initial color information; the actual color information of each pixel includes actual gray levels under n hues; at least some of the pixels are target pixels, the color reflected by the actual color information of the target pixels is different from the color reflected by the initial color information, and the difference between the actual gray levels of the same target pixel is greater than the difference between the initial gray levels; Based on the actual color information, the liquid crystal display panel is controlled to sequentially display n sub-field images of the hue to obtain the m-th frame image; Determining the actual color information of the pixel based on the initial color information; including: The initial grayscale is placed in the YUV color space; in the YUV color space, the hue angle of the color reflected by the initial color information is the initial hue angle; the hue angles of n reference colors are used as reference hue angles; In the YUV color space, a reference hue angle that is closest to the initial hue angle is determined; the difference between the initial hue angle and its closest reference hue angle is the initial angle. The actual hue angle is determined based on the initial angle; the difference between the reference hue angle closest to the initial hue angle and the actual hue angle is the actual angle, and the initial angle is greater than the actual angle; The actual color information is determined based on the color reflected by the actual hue angle.

11. An image display method, characterized in that, A liquid crystal display device, the liquid crystal display device including a liquid crystal display panel and a control circuit, the liquid crystal display panel including a plurality of pixels; the image display method includes: In the first working mode: Receive the initial color information of each pixel in the m-th frame image; the initial color information of each pixel includes n initial gray levels under different hues; m and n are positive integers, n≥2; The actual color information of the pixel is determined based on the initial color information; the actual color information of each pixel includes actual gray levels under n hues; at least some of the pixels are target pixels, and the brightness of the color reflected by the actual color information of the same target pixel is less than the brightness of the color reflected by its initial color information; Based on the actual color information, the liquid crystal display panel is controlled to sequentially display n sub-field images of the hue to obtain the m-th frame image; Determining the actual color information of the pixel based on the initial color information; including: The initial grayscale is placed in the YUV color space; in the YUV color space, the hue angle of the color reflected by the initial color information is the initial hue angle; the hue angles of n reference colors are used as reference hue angles; The reduction factor is determined based on the initial hue angle and its closest reference hue angle; The initial actual gray level of the pixel is determined based on the initial gray level of at least some of the pixels and the reduction factor; the reduction factor is the ratio of the initial gray level of the same hue of the same target pixel to its actual gray level.

12. An image display method, characterized in that, A liquid crystal display device, the liquid crystal display device including a liquid crystal display panel and a control circuit, the liquid crystal display panel including a plurality of pixels; the image display method includes: In the first working mode: Receive the initial color information of each pixel in the m-th frame image; the initial color information of each pixel includes n initial gray levels under different hues; m and n are positive integers, n≥2; Based on the initial color information of each pixel reflecting the initial brightness of each pixel and the corresponding relationship between the preset brightness and adjustment coefficient, a first adjustment coefficient and a second adjustment coefficient are determined; the second adjustment coefficient is greater than the first adjustment coefficient, and the first adjustment coefficient is greater than 0 and less than 1; the second adjustment coefficient is greater than 1. The actual gray level is determined based on the initial gray level of the first pixel whose initial brightness is greater than the brightness threshold according to the first adjustment coefficient; the actual gray level is determined based on the initial gray level of the second pixel whose brightness is less than the brightness threshold according to the second adjustment coefficient; the actual color information of the pixel is obtained so that the actual gray level of the first pixel is less than its initial gray level and the actual gray level of the second pixel is greater than its initial gray level, thereby obtaining the actual color information. Based on the actual color information, the liquid crystal display panel is controlled to sequentially display n sub-field images of the hue to obtain the m-th frame image.

13. The image display method according to claim 12, characterized in that, The actual gray level is determined based on the initial gray level of the first pixel whose initial brightness is greater than the brightness threshold, according to the first adjustment coefficient. The actual gray level is determined based on the initial gray level of the second pixel whose brightness is less than the brightness threshold, according to the second adjustment coefficient. include: In the YUV color space, the coordinates and initial brightness of the color reflecting part of the initial color information are multiplied by the first adjustment coefficient to obtain the actual color information of the first pixel; the coordinates and initial brightness of the color reflecting part of the initial color information are multiplied by the second adjustment coefficient to obtain the actual color information of the pixel.

14. An electronic device, characterized in that, Includes the liquid crystal display device according to any one of claims 1-9.

Images