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

Abstract

Provided are a liquid crystal display apparatus, an image display method, and an electronic device, relating to the field of display. The liquid crystal display apparatus comprises a liquid crystal display panel (PNL) and a control circuit (CU); the liquid crystal display panel (PNL) comprises a plurality of pixels; the control circuit (CU) comprises a first working mode; in the first working mode, the control circuit (CU) is configured to receive initial color information of each pixel of the m-th image frame, and according to the initial color information, control the liquid crystal display panel (PNL) to sequentially display n sub-field images of different tones to obtain the m-th image frame, wherein m and n are positive integers, and n≥2; the initial color information of each pixel comprises initial grayscales in n tones; in the m-th image frame, actual color information of each pixel comprises actual grayscales in n tones; at least some of the pixels are target pixels; colors reflected by the actual color information of the target pixels are different from colors reflected by the initial color information; and the difference between the actual grayscales of a same target pixel is greater than the difference between the initial grayscales of the same target pixel.

Description

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

[0001] Cross-references

[0002] This disclosure claims priority to Chinese patent application number 202310639498.5 filed on May 31, 2023, entitled “LIQUID CRYSTAL DISPLAY DEVICE, IMAGE DISPLAY METHOD AND ELECTRONIC EQUIPMENT”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to the field of display technology, and in particular to a liquid crystal display device, an image display method, and an electronic device. Background Art

[0004] Display panels are an indispensable part of electronic devices such as televisions and mobile phones, among which liquid crystal display panels are widely used. However, existing liquid crystal display panels suffer from high light loss and high energy consumption during the light output process.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field.

[0006] Summary of the Invention

[0007] The purpose of the present disclosure is to overcome the above-mentioned deficiencies of the prior art and to provide a liquid crystal display device, an image display method and an electronic device.

[0008] 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, wherein the liquid crystal display panel comprises a plurality of pixels;

[0009] The control circuit includes a first operating mode, and in the first operating mode is configured to: receive 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 tones 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 initial grayscales at the n tones;

[0010] In the mth frame image, the actual color information of each of the pixels includes actual grayscales under n of the tones; 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 grayscales of the same target pixel is greater than the difference between its initial grayscales.

[0011] In an exemplary embodiment of the present disclosure, in a 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 the reference hue angles;

[0012] 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.

[0013] In an exemplary 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:

[0014] U t and V t is the coordinate of the color reflected by the initial color information, U t ' and V t ' is the coordinate of the color reflected by the actual color information; Δθ is a conversion angle, and the conversion angle is the difference between the initial hue angle and the actual hue angle.

[0015] In an exemplary embodiment of the present disclosure, the initial angle is positively correlated with the conversion angle.

[0016] 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, wherein the liquid crystal display panel comprises a plurality of pixels;

[0017] The control circuit includes a first operating mode, and in the first operating mode is configured to: receive 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 tones 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 initial grayscales at the n tones;

[0018] In the mth frame image, the actual color information of each of the pixels includes actual grayscale under n of the tones; 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.

[0019] In an exemplary embodiment of the present disclosure, in a 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 of the same hue of the same target pixel to its actual grayscale is the reduction coefficient;

[0020] In the YUV color space, the difference between the initial hue angle and its closest reference hue angle is the initial angle, and the initial angle of the same target pixel is positively correlated with the reduction coefficient.

[0021] 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, wherein the liquid crystal display panel comprises a plurality of pixels;

[0022] The control circuit includes a first operating mode, and in the first operating mode is configured to: receive 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 tones 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 initial grayscales at the n tones;

[0023] In the mth frame image, the actual color information of each of the pixels includes the actual grayscale under n of the tones; 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 grayscale of the same tones of the same first target pixel is less than its initial grayscale, and the actual grayscale of the same tones of the same second target pixel is greater than its initial grayscale.

[0024] In an exemplary embodiment of the present disclosure, in a YUV color space, a ratio of a color reflecting actual color information of the first target pixel to a coordinate reflecting initial color information of the first target pixel is a first adjustment coefficient, and a ratio of a brightness reflecting actual color information of the second target pixel to a brightness reflecting initial color information of the first target pixel is a first adjustment coefficient;

[0025] The ratio of the color reflecting the actual color information of the second target pixel to the coordinates reflecting the initial color information of the second target pixel is a 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 a second adjustment coefficient;

[0026] The second adjustment coefficient is greater than the first adjustment coefficient.

[0027] In an exemplary embodiment of the present disclosure, both the first adjustment coefficient and the second adjustment coefficient are negatively correlated with the brightness reflecting actual color information of the target pixel.

[0028] In an exemplary embodiment of the present disclosure, the control circuit further includes a second operating mode, and in the second operating mode is configured to: upon receiving the initial color information of the m-th frame image, control the liquid crystal display device to sequentially display n subfield images to obtain the m-th frame image;

[0029] In the second operating mode, the actual grayscale of the pixel is its initial grayscale.

[0030] In an exemplary embodiment of the present disclosure, the liquid crystal display panel includes:

[0031] An array substrate and a counter substrate arranged opposite to each other;

[0032] a liquid crystal layer, disposed between the array substrate and the counter substrate;

[0033] The liquid crystal display device further includes:

[0034] a backlight module, disposed on a side of the array substrate away from the counter substrate, and comprising light-emitting devices of n different colors, wherein the backlight module emits the same color of light when displaying the same subfield image and emits different colors of light when displaying different subfield images;

[0035] The control circuit is connected to the array substrate and the backlight module.

[0036] According to one aspect of the present disclosure, there is provided an image display method for a liquid crystal display device, wherein the liquid crystal display device includes a liquid crystal display panel and a control circuit, wherein the liquid crystal display panel includes a plurality of pixels. The image display method includes:

[0037] In the first working mode:

[0038] receiving initial color information of each pixel of the m-th frame image; the initial color information of each pixel includes initial grayscales of n different tones; m and n are positive integers, and n≥2;

[0039] determining actual color information of the pixels based on the initial color information; the actual color information of each pixel includes actual grayscales at n tones; at least some of the pixels are target pixels, the colors reflected by the actual color information of the target pixels are different from the colors reflected by the initial color information, and the difference between the actual grayscales of the same target pixel is greater than the difference between the initial grayscales;

[0040] The liquid crystal display panel is controlled to sequentially display n sub-field images of the color tone according to the actual color information to obtain the m-th frame image.

[0041] In an exemplary embodiment of the present disclosure, determining the actual color information of the pixel according to the initial color information includes:

[0042] The initial grayscale is placed in a 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; and the hue angles of n reference colors are the reference hue angles;

[0043] In the YUV color space, determining a reference hue angle closest to the initial hue angle; the difference between the initial hue angle and the reference hue angle closest to the initial hue angle is the initial angle;

[0044] Determine the actual hue angle according to 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;

[0045] Actual color information is determined according to the color reflected by the actual hue angle.

[0046] According to one aspect of the present disclosure, there is provided an image display method for a liquid crystal display device, wherein the liquid crystal display device includes a liquid crystal display panel and a control circuit, wherein the liquid crystal display panel includes a plurality of pixels. The image display method includes:

[0047] In the first working mode:

[0048] receiving initial color information of each pixel of the m-th frame image; the initial color information of each pixel includes initial grayscales of n different tones; m and n are positive integers, and n≥2;

[0049] determining actual color information of the pixels based on the initial color information; the actual color information of each pixel includes actual grayscale at n tones; at least some of the pixels are target pixels, 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;

[0050] The liquid crystal display panel is controlled to sequentially display n sub-field images of the color tone according to the actual color information to obtain the m-th frame image.

[0051] In an exemplary embodiment of the present disclosure, determining the actual color information of the pixel according to the initial color information includes:

[0052] The initial grayscale is placed in a 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; and the hue angles of n reference colors are the reference hue angles;

[0053] Determining a reduction coefficient according to the initial hue angle and the closest reference hue angle;

[0054] The initial actual grayscale of the pixel is determined according to the initial grayscale of at least part of the pixels and the reduction coefficient; the reduction coefficient is the ratio of the initial grayscale of the same hue of the same target pixel to its actual grayscale.

[0055] According to one aspect of the present disclosure, there is provided an image display method for a liquid crystal display device, wherein the liquid crystal display device includes a liquid crystal display panel and a control circuit, wherein the liquid crystal display panel includes a plurality of pixels. The image display method includes:

[0056] In the first working mode:

[0057] receiving initial color information of each pixel of the m-th frame image; the initial color information of each pixel includes initial grayscales of n different tones; m and n are positive integers, and n≥2;

[0058] Determining a first adjustment coefficient and a second adjustment coefficient based on an initial brightness of each pixel reflected by the initial color information of each pixel and a preset correspondence between the brightness and the adjustment coefficient; 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;

[0059] Determining an actual grayscale for an initial grayscale of a first pixel having an initial brightness greater than a brightness threshold according to the first adjustment coefficient; determining an actual grayscale for an initial grayscale of a second pixel having a brightness less than the brightness threshold according to the second adjustment coefficient; obtaining actual color information of the pixels such that the actual grayscale of the first pixel is less than its initial grayscale and the actual grayscale of the second pixel is greater than its initial grayscale, thereby obtaining actual color information;

[0060] The liquid crystal display panel is controlled to sequentially display n sub-field images of the color tone according to the actual color information to obtain the m-th frame image.

[0061] In an exemplary embodiment of the present disclosure, determining an actual grayscale for an initial grayscale of a first pixel having an initial brightness greater than a brightness threshold according to the first adjustment coefficient; and determining an actual grayscale for an initial grayscale of a second pixel having a brightness less than the brightness threshold according to the second adjustment coefficient; comprising:

[0062] 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.

[0063] According to one aspect of the present disclosure, an electronic device is provided, comprising any one of the above-mentioned liquid crystal display devices.

[0064] The disclosed liquid crystal display device, image display method, and electronic device can achieve field-sequential display by temporally mixing the colors of n sub-field images displayed sequentially, eliminating the need for spatial color mixing and the need for color filters, thereby improving light extraction efficiency and eliminating the need for sub-pixels of different colors, thereby improving resolution. Furthermore, the device can provide at least one of the following beneficial effects:

[0065] 1. In the first operating mode, for a pixel, the difference between its initial grayscales can be increased to obtain an actual grayscale, and then the subfield image can be displayed based on the actual grayscale. Compared to directly displaying the subfield image based on the initial grayscale, the increased difference in the actual grayscale can make the color of the pixel in the mth frame image closer to the white point, thereby reducing color separation.

[0066] Second, in the first operating mode, the initial grayscale of the same target pixel with the same hue can be lowered to obtain an actual grayscale, and the subfield image can then be displayed based on the actual grayscale. Compared to directly displaying the subfield image based on the initial grayscale, lowering the grayscale can reduce the brightness of the pixel in the mth frame image. This reduction in brightness makes color separation less visually noticeable, thereby reducing the color separation phenomenon.

[0067] 3. In the first operating mode, a first adjustment coefficient and a second adjustment coefficient may be determined based on the relationship between the initial brightness determined based on the initial color information and a preset brightness adjustment coefficient, respectively. The first adjustment coefficient is greater than 0 and less than 1, while the second adjustment coefficient is greater than 1. Furthermore, the first adjustment coefficient may be used to reduce the initial grayscale of pixels whose initial brightness is greater than a brightness threshold to obtain their actual grayscale, while the second adjustment coefficient may be used to reduce the initial grayscale of pixels whose initial brightness is less than the brightness threshold to obtain their actual grayscale. This reduces the brightness of pixels with higher initial brightness and increases the brightness of pixels with lower initial brightness, thereby reducing brightness differences and, therefore, contrast. This can make color separation less visually noticeable and mitigate the color separation phenomenon.

[0068] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification, are used to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0070] FIG1 is a schematic structural diagram of an embodiment of a liquid crystal display device disclosed herein.

[0071] FIG2 is a circuit diagram of an embodiment of a liquid crystal display device disclosed herein.

[0072] FIG3 is a partial schematic diagram of the mth frame image of the liquid crystal display device of the present disclosure in the first working mode.

[0073] 4 to 6 are principle diagrams of three subfield images of the m-th frame image in FIG. 3 .

[0074] FIG7 is a schematic diagram of an embodiment of an electronic device disclosed herein.

[0075] FIG8 is a schematic diagram of placing initial color information in a YUV color space in the liquid crystal display device of the present disclosure.

[0076] FIG9 is a schematic diagram showing the relationship between the conversion angle and the initial phase angle in the first liquid crystal display device of the present disclosure.

[0077] FIG10 is a schematic diagram showing the relationship between the reduction coefficient and the initial phase angle in the second liquid crystal display device of the present disclosure.

[0078] FIG. 11 is a diagram showing the corresponding relationship between the adjustment coefficient and the initial brightness in the third liquid crystal display device of the present disclosure. DETAILED DESCRIPTION

[0079] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in many 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 concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent identical or similar structures, and thus their detailed descriptions will be omitted. Furthermore, the figures are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0080] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express open-ended inclusion and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used only as labels and are not intended to limit the quantity of their objects.

[0081] The present disclosure provides a liquid crystal display device, as shown in FIG1 and FIG2 . The liquid crystal display device may include a liquid crystal display panel PNL and a control circuit CU, wherein:

[0082] The liquid crystal display panel PNL has a plurality of pixels arranged in an array. A pixel is a minimum light-emitting unit. The liquid crystal display panel PNL may include an array substrate TB, an opposing substrate FB, and a liquid crystal layer LL disposed between the array substrate TB and the opposing substrate FB.

[0083] The liquid crystal display panel PNL also includes pixel electrodes and common electrodes. The pixel electrodes can be provided on the array substrate TB, and the common electrodes can be provided on the array substrate TB or the counter substrate FB. Each pixel includes one pixel electrode. The array substrate TB includes a drive circuit. The control circuit CU can be provided on the array substrate TB and can control the voltage between the pixel electrodes and the common electrode through the drive circuit, thereby controlling the degree of deflection of the liquid crystal molecules in the liquid crystal layer LL, and further controlling the transmittance of each pixel to light, thereby adjusting the grayscale of each pixel.

[0084] The liquid crystal display device may further include a backlight module BLU, which may be disposed on a side of the array substrate TB away from the counter substrate FB. The backlight module BLU may emit light toward the array substrate TB under the control of the control circuit CU.

[0085] In some embodiments, the counter substrate (FB) may include a color filter layer comprising multiple filter sections. Each pixel may include one filter section. Through the filtering effect of the filter sections, each pixel emits monochromatic light, and different pixels can emit different colors. However, the color filter layer causes significant light loss, reducing the brightness of the LCD device without increasing the power of the backlight unit (BLU). Increasing the brightness requires increasing the power of the backlight unit (BLU), resulting in increased power consumption.

[0086] To improve light extraction efficiency without increasing power consumption, in some embodiments, the counter substrate FB may not be provided with a color filter layer to reduce light loss and improve light extraction efficiency. To achieve color display, the backlight module BLU can include light-emitting devices of n different colors. The number of light-emitting devices of the same color is not specifically limited and can be one or more. The color of the light emitted by the backlight module BLU represents the hue of the image. Based on this, field sequential display can be used when displaying images. For example, n subfield images are displayed sequentially within a frame. Each subfield image is a monochrome image. Within each subfield image, the grayscale of different pixels can be different, and the grayscale of the same pixel can be different in different subfield images. The backlight module BLU emits the same color when displaying the same subfield image, but emits different colors when displaying different subfield images. For example, when displaying each subfield image, only light-emitting devices of one color in the backlight module BLU emit light, so that each subfield image has only one hue, that is, one color. In this way, based on the phenomenon of persistence of vision, a single frame of image can be obtained.

[0087] As shown in FIG2 , in some embodiments of the present disclosure, the control circuit CU may be configured to execute one or more operating modes, including a first operating mode. In the first operating mode:

[0088] The control circuit CU is configured to receive initial color information of each pixel of the m-th frame image and control the liquid crystal display panel PNL to sequentially display n sub-field images of different tones based on the initial color information to obtain the m-th frame image. m and n are positive integers, and n ≥ 2.

[0089] The initial color information for each pixel can include initial grayscales in n tones. For a pixel in a frame of image, the n grayscales can be displayed sequentially, achieving temporal color mixing, so that the pixel presents the desired color. For example, if n = 3, and the three tones are red, green, and blue, the initial color information for each pixel in the mth frame of image can include an initial grayscale for red, an initial grayscale for green, and an initial grayscale for blue.

[0090] Figures 4 through 6 illustrate three subfield images. In different subfield images, the illuminated pixels P form multiple stripe patterns. The illuminated pixels in different subfield images can differ or overlap, meaning the same pixel can illuminate in each subfield image. The three subfield images form the mth frame image shown in Figure 3. It should be noted that Figure 3 is intended only to illustrate the principle of color mixing and the resulting visual effect of the three subfield images and does not limit the specific patterns of the subfield images.

[0091] In one embodiment, the backlight unit (BLU) may include three types of light-emitting devices, each capable of emitting red, green, and blue light. A single frame of image can be divided into three sub-field images, each with a red, green, and blue hue. These three sub-field images are displayed sequentially to visually form a single frame of image.

[0092] As shown in Figure 2 , the control circuit CU can be connected to the array substrate TB and the backlight module BLU to control the backlight module BLU's light emission and the degree of liquid crystal deflection, that is, to control the color and grayscale of each pixel. The control circuit CU may include a timing controller, a gate drive circuit, a source drive circuit, a backlight control circuit, etc., and its structure is not particularly limited here.

[0093] The inventors discovered that when field sequential display is used, since a frame of image needs to be mixed from multiple sub-field images that are not displayed at the same time, when the user blinks, glances, or moves the target in the picture, they may observe red, green, and blue tones in the picture at the same time, which is a color separation phenomenon.

[0094] The inventors have discovered through research that multiple factors affect color separation, which can be used to improve the color separation phenomenon. The following is an exemplary description:

[0095] First liquid crystal display device disclosed herein

[0096] In a first operating mode, the control circuit CU may process initial color information of at least a portion of pixels in the mth frame image to obtain actual color information of these pixels. The actual color information of each pixel includes actual grayscales at n tones, where an actual grayscale corresponds to an initial grayscale of the same tones. Simultaneously, n field-sequential images may be generated based on the actual grayscales of the actual color information. Each field-sequential image has the same tones, and different field-sequential images have different tones, thereby obtaining the mth frame image.

[0097] In the m-th frame image, the pixel processed with the initial grayscale can be defined as the target pixel. After processing, the color reflected by the actual color information of the target pixel is different from the color reflected by the initial color information, and the difference between the actual grayscales of the same target pixel is greater than the difference between its initial grayscales.

[0098] For a target pixel, the difference between its initial grayscale and the actual grayscale can be reflected by the difference in different tones. For example, n=3, and the tones of the initial grayscale and the actual grayscale are red (R), green (G), and blue (B). The difference between the largest and smallest of the initial grayscales can be calculated to reflect the difference in the initial grayscale. The difference in the initial grayscale can also be reflected by the average of the differences between the initial grayscales. Alternatively, the difference in the initial grayscale can be reflected by the difference between the two closest initial grayscales. Further, for example, the initial grayscale of one initial color information is (R=255, G=255, B=255), and the initial grayscale of another initial color information is (R=255, G=10, B=10). The difference in grayscale of (R=255, G=10, B=10) is greater than that of (R=255, G=255, B=255). The difference in actual grayscale and the difference in initial grayscale are reflected in the same way and will not be described in detail here.

[0099] In some embodiments of the present disclosure, the initial color information may be converted from the RGB color space to the YUV color space, and the initial color information may be converted within the YUV space to obtain the actual color information. The actual color information may then be converted back to the RGB color space to display a field sequential image according to each actual grayscale. This is described in detail below:

[0100] The initial color information of a target pixel can be converted from RGB space to YUV space using the following formula:

[0101] is the conversion matrix, R, G, B are the initial color information of the target pixel in the RGB color space, Y, U, V are the initial color information in the YUV color space, and Y is the initial brightness of the target sub-pixel. The specific conversion principle will not be detailed here.

[0102] 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; at the same time, the hue angles of n reference colors can be used as reference hue angles in the YUV space, and each reference color can be represented by n reference axes passing through the origin. At the same time, multiple auxiliary colors different from the reference colors can be selected, and the auxiliary colors can be represented by auxiliary axes passing through the origin, so that the YUV color space can be divided into multiple areas by the auxiliary colors and the reference colors.

[0103] For example, as shown in Figure 9, n can be 3. The base colors are red, green, and blue, and the three base axes represent red (R axis), green (G axis), and blue (B axis), respectively. The number of auxiliary colors is three, and the three auxiliary axes are magenta (M axis), yellow (Y axis), and cyan (C axis). The three base axes and three auxiliary axes can be used to divide the YUV color space into six regions. Furthermore, the horizontal axis of the YUV space is the U axis, and the vertical axis is the V axis, which are different from the base and auxiliary axes mentioned above.

[0104] Furthermore, in the YUV color space, the initial color information and actual color information of the same target pixel satisfy the following relationship:

[0105] U t and V t is the coordinate of the color reflected by the initial color information, U t ' and V t ' 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 θs and the actual hue angle.

[0106] In the YUV color space, after obtaining the initial color information of a target pixel and converting it to the YUV color space, the reference axis closest to the initial hue angle θs of the color reflecting the initial color information can be determined, and the initial hue angle θs is used as a reference to rotate a certain angle toward the closest reference axis to obtain the actual hue angle, which 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 its closest reference hue angle can be defined as the initial angle; the difference between the reference hue angle closest to the initial hue angle θs and the actual hue angle can be defined as the actual angle. For the same target pixel, the initial angle is greater than the actual angle. The initial angle is positively correlated with the conversion angle Δθ. Specifically, a larger initial angle results in a larger conversion angle Δθ, which in turn results in a greater convergence toward the reference axis. In other words, different initial angles result in different conversion angles Δθ, and thus different differences between the initial grayscale and the actual grayscale. Since the color of the reference axis has the greatest grayscale difference, this method can increase the difference between grayscales, replacing the initial grayscale with the larger actual grayscale difference.

[0108] In order to increase the smoothness of the actual grayscale and avoid sudden changes that affect the image quality, the conversion angle and the initial hue angle θs can satisfy the following relationship:

[0109] As shown in FIG9 , in the YUV color space, if the initial hue angle θs is 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), then the conversion angle Δθ is positively correlated with the initial hue angle θs.

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

[0111] θs in FIG9 is a schematic diagram illustrating an initial hue angle, and is not a specific limitation on the angle. That is, the hue angle is the angle between the ray passing through the point reflecting a color and the origin and the U axis.

[0112] For example, as shown in FIG9 , between two adjacent reference axes, the initial hue angle θs and the conversion angle Δθ may satisfy the following relationship: Δθ=aθs 2 +bθs+c;

[0113] a, b, and c are constants, and a is a negative number.

[0114] Of course, in other embodiments of the present disclosure, between two adjacent reference axes, the initial hue angle θs and the conversion angle Δθ may also be in a linear relationship or other gradual relationship, as long as the above-mentioned positive correlation and negative correlation relationships are met.

[0115] The target pixels mentioned above can be part of 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, then all pixels can be target pixels and the above-mentioned conversion from initial grayscale to actual grayscale must be performed. If the color reflected by the initial color information of some pixels is on the reference axis, for example, in the YUV space, the initial color information of some pixels determines the color to be red, green, or blue, then for these pixels, the initial grayscale is the actual grayscale, and the above-mentioned conversion does not need to be performed. When displaying the mth frame of the image, the initial grayscale can be directly used for display.

[0116] In addition, in the m-th frame image, if the color reflected by the initial color information of some pixels is located on the auxiliary axis, a conversion rule can be preset. For example, the initial hue angle θs is rotated by a rotation angle clockwise or counterclockwise toward the reference axis by default to obtain the actual hue angle.

[0117] Based on the first liquid crystal display device described above, the image display method is described below:

[0118] The image display method may include: executing steps S110 to S130 in a first working mode, wherein:

[0119] Step S110 , receiving initial color information of each pixel of the m-th frame image; the initial color information of each pixel includes initial grayscales under n different tones; m and n are positive integers, and n≥2.

[0120] Step S120, determining the actual color information of the pixel based on the initial color information; the actual color information of each pixel includes actual grayscales under n tones; at least some pixels are target pixels, the color reflected by the actual color information of the target pixel is different from the color reflected by the initial color information, and the difference between the actual grayscales of the same target pixel is greater than the difference between the initial grayscales.

[0121] In some embodiments of the present disclosure, determining the actual color information of a pixel based on the initial color information, i.e., step S120, may include steps S1210 to S1240, wherein:

[0122] Step S1210 , placing 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; and the hue angles of n reference colors are used as reference hue angles.

[0123] Step S1220: Determine a 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 the initial angle.

[0124] Step S1230: Determine the 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 the actual angle, and the initial angle is greater than the actual angle.

[0125] The initial hue angle θs can be rotated toward the closest reference axis by a certain angle (rotation angle) to obtain the actual hue angle.

[0126] Step S1240: Determine actual color information according to the color reflected by the actual hue angle.

[0127] Step S130 : controlling the liquid crystal display panel to sequentially display sub-field images of n tones according to the actual color information to obtain an m-th frame image.

[0128] The details of the image display method have been described in detail in the first liquid crystal display device embodiment above and will not be repeated here.

[0129] Second liquid crystal display device

[0130] In a first operating mode, the control circuit may process initial color information of at least a portion of pixels in the mth frame image to obtain actual color information of these pixels. The actual color information of each pixel includes actual grayscales at n tones, where an actual grayscale corresponds to an initial grayscale of the same tones. Simultaneously, n field-sequential images may be generated based on the actual grayscales of the actual color information. Each field-sequential image has the same tones, and different field-sequential images have different tones, thereby obtaining the mth frame image.

[0131] In the m-th frame image, the pixel whose initial grayscale is processed can be defined as a target pixel. After processing, the brightness of the color reflected by the actual color information of the same target pixel is lower than the brightness of the color reflected by its initial color information. The ratio of an initial grayscale of the initial color information to the actual grayscale of the same hue in the actual color information is a reduction coefficient K. The reduction coefficient K is less than 1 and greater than 0. The initial grayscale can be reduced by the reduction coefficient K to obtain the actual grayscale. At the same time, since each initial grayscale can be multiplied by the same reduction coefficient K to obtain the actual grayscale, the color reflected by the initial color information is the same as the color reflected by the actual color coefficient, with only the brightness reduced.

[0132] In some embodiments of the present disclosure, different reduction coefficients K may be used to obtain actual color information for different initial color information. For example, the initial color information may be converted from an RGB color space to a YUV color space. The specific conversion method may refer to the description of the conversion between the RGB color space and the YUV color space in the first liquid crystal display device and will not be described in detail here.

[0133] In the YUV color space, the hue angle of the color reflecting the initial color information is the initial hue angle θs, 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 difference between the initial hue angle θs and its closest reference hue angle is the initial angle. The reduction coefficient K can be selected based on the size of the initial angle. The initial angle and reduction coefficient K for the same target pixel can be negatively correlated. That is, the larger the initial angle, the larger the reduction coefficient K, and the farther from the reference axis, the larger the reduction coefficient K.

[0134] Based on the second liquid crystal display device described above, the image display method is described below:

[0135] The image display method may include: executing steps S210 to S230 in a first working mode, wherein:

[0136] Step S210: receiving initial color information of each pixel of the m-th frame image; the initial color information of each pixel includes initial grayscales of n different tones; m and n are positive integers, and n≥2;

[0137] Step S220, determining 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 tones; at least some pixels are target pixels, at least some pixels are target pixels, and the actual grayscale of the same target pixel and the same tones is less than its initial grayscale.

[0138] Determine the actual color information of the pixel according to the initial color information; that is, step S220 may include:

[0139] Step S2210: placing 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; and the hue angles of n reference colors are used as reference hue angles;

[0140] Step S2220: determining a reduction coefficient K based on the initial hue angle θs and its closest reference hue angle;

[0141] Step S2230: Determine the initial actual grayscale of the pixel based on the initial grayscale of at least part of the pixels and the reduction coefficient K; the reduction coefficient K is the ratio of the initial grayscale of the same hue of the same target pixel to its actual grayscale.

[0142] Step S230 : controlling the liquid crystal display panel to sequentially display sub-field images of n tones according to the actual color information to obtain the mth frame image.

[0143] In order to increase the smoothness of the actual grayscale and avoid sudden changes that affect the image quality, the reduction coefficient K and the initial hue angle θs can satisfy the following relationship:

[0144] As shown in FIG8 , in the YUV color space, if the initial hue angle θs is between the hue angle of red and the hue angle of yellow, between the hue angle of green and the hue angle of cyan, or between the hue angle of blue and the hue angle of magenta, then the reduction coefficient K is positively correlated with the initial hue angle θs.

[0145] If the initial hue angle θs is between the hue angles of magenta and red, between the hue angles of yellow and green, or between the hue angles of cyan and blue, the reduction coefficient K is negatively correlated with the initial hue angle θs.

[0146] For example, as shown in FIG10 , between two adjacent reference axes, the initial hue angle θs and the reduction coefficient K may satisfy the following relationship: K=aθs 2 +bθs+c;

[0147] a, b, and c are constants, and a is a positive number.

[0148] Of course, in other embodiments of the present disclosure, between two adjacent reference axes, the initial hue angle θs and the reduction coefficient K may also be in a linear relationship or other gradual relationship, as long as they meet the above-mentioned positive correlation and negative correlation relationships.

[0149] The target pixels mentioned above can be part of 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, then all pixels can be target pixels and the above-mentioned conversion from initial grayscale to actual grayscale must be performed. If the color reflected by the initial color information of some pixels is on the reference axis, for example, in the YUV space, the initial color information of some pixels determines the color to be red, green, or blue, then for these pixels, the initial grayscale is the actual grayscale, and the above-mentioned conversion does not need to be performed. When displaying the mth frame of the image, the initial grayscale can be directly used for display.

[0150] In addition, in the m-th frame image, if there are some pixels whose initial color information reflects a color located on the auxiliary axis, the reduction coefficient may be the maximum value.

[0151] The third liquid crystal display device

[0152] In a first operating mode, the control circuit may process initial color information of at least a portion of pixels in the mth frame image to obtain actual color information of these pixels. The actual color information of each pixel includes actual grayscales at n tones, where an actual grayscale corresponds to an initial grayscale of the same tones. Simultaneously, n field-sequential images may be generated based on the actual grayscales of the actual color information. Each field-sequential image has the same tones, and different field-sequential images have different tones, thereby obtaining the mth frame image.

[0153] In the mth frame image, a brightness threshold can be used as a comparison basis. When the brightness of the color reflected by the initial color information is the initial brightness Gray, if the initial brightness Gray is greater than the brightness threshold Lm, it can be considered to be high brightness, while if it is less than the brightness threshold Lm, it can be considered to be low brightness. Based on this, pixels whose initial brightness Gray differs from the brightness threshold Lm can be defined as target pixels, including a first target pixel and a second target pixel. The first target pixel is a target pixel whose initial brightness Gray is lower than the brightness threshold Lm, and the second target pixel is a target pixel whose initial brightness Gray is greater than the brightness threshold Lm.

[0154] The actual grayscale of the same hue for the same first target pixel can be lower than its initial grayscale. That is, the brightness of a target pixel with higher brightness can be reduced so that the actual grayscale is lower than the initial grayscale. Simultaneously, the actual grayscale of the same hue for the same second target pixel can be higher than its initial grayscale. That is, the brightness of a target pixel with lower brightness can be increased so that the actual grayscale is higher than the initial grayscale. This reduces the contrast of at least some pixels in the mth frame image, thereby reducing the color separation phenomenon.

[0155] In some embodiments of the present disclosure, the initial color information may be converted from the RGB color space to the YUV color space. The specific conversion method may refer to the description of the conversion between the RGB color space and the YUV color space in the first liquid crystal display device and will not be described in detail here.

[0156] In the YUV color space, the first adjustment coefficient and the second adjustment coefficient can be determined based on the relationship between the initial color information of the first target pixel and the second target pixel, the preset initial brightness Gray, and the adjustment coefficient W. The first adjustment coefficient can be multiplied by the Y, U, and V coordinates reflecting the initial color information to obtain the actual color information, which is then converted to the RGB color space so that the ratio of the color reflecting the actual color information of the first target pixel to the coordinates reflecting the initial color information of the first target pixel is the first adjustment coefficient, and the ratio of 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 the Y, U, and V coordinates reflecting the initial color information to obtain the actual color information so that 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 first 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.

[0157] The initial brightness Gray can be calculated by the following formula: Gray = (k1×R+k2×G+k3×B);

[0158] R, G, and B are grayscales 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.

[0159] The adjustment coefficient W is negatively correlated with 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 can be determined based on empirical data, experimental data, etc., and is not particularly limited here.

[0160] The second adjustment coefficient may be greater than the first adjustment coefficient, the first adjustment coefficient is less than 1 and greater than 0, and the first adjustment coefficient may be greater than 1.

[0161] Based on the third liquid crystal display device described above, the image display method is described below:

[0162] The image display method may include: executing steps S310 to S330 in a first working mode, wherein:

[0163] Step S310: receiving initial color information of each pixel of the m-th frame image; the initial color information of each pixel includes initial grayscales of n different tones; m and n are positive integers, and n≥2;

[0164] Step S320: Determine a first adjustment coefficient and a second adjustment coefficient based on the initial brightness of each pixel reflected by the initial color information of each pixel and the 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;

[0165] Step S330, determining the actual grayscale of the initial grayscale of the first pixel whose initial brightness is greater than the brightness threshold according to the first adjustment coefficient; determining the actual grayscale of the initial grayscale of the second pixel whose brightness is less than the brightness threshold according to the second adjustment coefficient; obtaining the actual color information of the pixel, so that the actual grayscale of the first pixel is less than its initial grayscale, and the actual grayscale of the second pixel is greater than its initial grayscale, thereby obtaining the actual color information.

[0166] 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.

[0167] Step S340 : controlling the liquid crystal display panel to sequentially display sub-field images of n tones according to the actual color information to obtain the mth frame image.

[0168] In some embodiments of the present disclosure, only one of the three solutions for improving the color separation phenomenon of the liquid crystal display panel may exist, or two or all of them may exist at the same time.

[0169] Furthermore, in some embodiments of the present disclosure, the control circuit CU further includes a second operating mode, and in the second operating mode is configured to: upon receiving initial color information of an m-th frame image, control the liquid crystal display device to sequentially display n subfield images to obtain the m-th frame image; m and n are positive integers, and n is greater than or equal to 2. The actual color information of each pixel is its initial color information, and the actual grayscale is its initial grayscale.

[0170] In the second working mode, the initial grayscale can be directly displayed as the actual grayscale without performing the processing in the first working mode on the initial grayscale.

[0171] The first and second operating modes described above can be activated upon receiving an activation signal. For example, an image capture device can capture an image of the user's eyeball, and an image processing device can determine the eyeball's movement speed based on the eyeball image. When the movement speed reaches a speed threshold, color separation becomes more pronounced. In this case, the control circuit CU can be placed in the first operating mode to eliminate color separation. When the movement speed does not reach the speed threshold, the color separation may be less pronounced. In this case, the control circuit CU can be placed in the second operating mode to improve operational efficiency.

[0172] An embodiment of the present disclosure provides an electronic device, which may include a liquid crystal display device. The structure of the liquid crystal display device may be the liquid crystal display device of any embodiment described above, which will not be described in detail here.

[0173] As shown in FIG7 , the electronic device further includes an image acquisition device and an image processing device, wherein:

[0174] The image acquisition device CAM may include one or more cameras, and of course, other devices that can acquire image information such as human body or object feature information may also be used. The image acquisition device CAM can acquire images of the user's eyeballs in real time.

[0175] The image processing device CP can be connected to the image acquisition device CAM. It can determine the movement speed of the eyeball based on the image of the eyeball. When the movement speed reaches a speed threshold, it outputs a start signal to the control circuit CU, placing the control circuit CU in the first operating mode. If the movement speed does not reach the speed threshold, no start signal is output, and the control circuit CU is placed in the second operating mode.

[0176] The image processing device CP can identify the pupil center based on the image of the eyeball and determine the movement speed of the eyeball based on the change in the position of the pupil center.

[0177] In some embodiments, the electronic device may further include an infrared detection device that uses infrared light to locate the center of the user's cornea. 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 true line of sight can then be determined based on the angle between the optical axis and the visual axis. Furthermore, a thermal mirror may be included to reduce tracking errors without affecting the display; alternatively, an optical waveguide may be used to transmit infrared light and eye images.

[0178] In addition, eye tracking may also be achieved through other methods, which are not particularly limited here.

[0179] The electronic device disclosed herein may be a mobile phone, a television, a tablet computer, or a head-mounted display device such as smart glasses, which are not listed here one by one.

[0180] 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 steps must be performed to achieve the desired results. Additionally or alternatively, certain steps may be omitted, multiple steps may be combined into one step, and / or a single step may be broken down into multiple steps.

[0181] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the appended claims.

Claims

1. A liquid crystal display device, wherein: 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 working mode, and in the first working mode, is configured to: receive 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 tones 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 initial grayscales under the n tones; In the mth frame image, the actual color information of each of the pixels includes actual grayscales under n of the tones; 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 grayscales of the same target pixel is greater than the difference between its initial grayscales.

2. The liquid crystal display device according to claim 1, wherein: 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 the 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.

3. The liquid crystal display device according to claim 2, wherein: 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 is the coordinate of the color reflected by the initial color information, U t ' and V t ' is the coordinate of the color reflected by the actual color information; Δθ is the conversion angle, and the conversion angle is the difference between the initial hue angle and the actual hue angle.

4. The liquid crystal display device according to claim 3, wherein: The initial angle is positively correlated with the conversion angle.

5. A liquid crystal display device, wherein: 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 working mode, and in the first working mode, is configured to: receive 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 tones 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 initial grayscales under the n tones; In the mth frame image, the actual color information of each of the pixels includes actual grayscale under n tones; 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.

6. The liquid crystal display device according to claim 5, wherein: 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 the reference hue angles; the ratio of the initial grayscale of the same hue of the same target pixel to its actual grayscale is the reduction coefficient; In the YUV color space, the difference between the initial hue angle and the closest reference hue angle is the initial angle, and the initial angle of the same target pixel is positively correlated with the reduction coefficient.

7. A liquid crystal display device, wherein: 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 working mode, and in the first working mode, is configured to: receive 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 tones 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 initial grayscales under the n tones; In the mth frame image, the actual color information of each of the pixels includes the actual grayscale under the n tones; 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 grayscale of the same tones of the same first target pixel is less than its initial grayscale, and the actual grayscale of the same tones of the same second target pixel is greater than its initial grayscale.

8. The liquid crystal display device according to claim 7, wherein: In the YUV color space, the ratio of the color reflecting the actual color information of the first target pixel to the coordinates 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 second target pixel to the brightness reflecting the initial color information of the first target pixel is the first adjustment coefficient; The ratio of the color reflecting the actual color information of the second target pixel to the coordinates 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; The second adjustment coefficient is greater than the first adjustment coefficient.

9. The liquid crystal display device according to claim 8, wherein: The first adjustment coefficient and the second adjustment coefficient are both negatively correlated with the brightness reflecting the actual color information of the target pixel.

10. The liquid crystal display device according to any one of claims 1 to 9, wherein: The control circuit further includes a second working mode, and in the second working mode is configured to: if the initial color information of the m-th frame image is received, control the liquid crystal display device to display n sub-field images in sequence to obtain the m-th frame image; In the second working mode, the actual grayscale of the pixel is its initial grayscale.

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

12. A method for displaying an image, wherein: Used in a liquid crystal display device, 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 image display method comprises: In the first working mode: Receive initial color information of each pixel of the m-th frame image; the initial color information of each pixel includes initial grayscales under n different tones; m and n are positive integers, n≥2; Determine the actual color information of the pixel according to the initial color information; the actual color information of each pixel includes the actual grayscale under the n tones; 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 grayscales of the same target pixel is greater than the difference between the initial grayscales; The liquid crystal display panel is controlled to sequentially display n sub-field images of the color tone according to the actual color information to obtain the m-th frame image.

13. The image display method according to claim 12, wherein: Determining the actual color information of the pixel according to the initial color information; comprising: The initial grayscale is placed in a 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; and the hue angles of n reference colors are the reference hue angles; In the YUV color space, determining a reference hue angle closest to the initial hue angle; the difference between the initial hue angle and the reference hue angle closest to the initial hue angle is the initial angle; Determine the actual hue angle according to 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 according to the color reflected by the actual hue angle.

14. A method for displaying an image, wherein: Used in a liquid crystal display device, 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 image display method comprises: In the first working mode: Receive initial color information of each pixel of the m-th frame image; the initial color information of each pixel includes initial grayscales under n different tones; m and n are positive integers, n≥2; Determine the actual color information of the pixel according to the initial color information; the actual color information of each pixel includes the actual grayscale under the n tones; at least some of the pixels are target pixels, 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; According to the actual color information, the liquid crystal display panel is controlled to display n colors in sequence. The sub-field image is adjusted to obtain the m-th frame image.

15. The image display method according to claim 14, wherein: Determining the actual color information of the pixel according to the initial color information; comprising: The initial grayscale is placed in a 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; and the hue angles of n reference colors are the reference hue angles; Determine a reduction coefficient according to the initial hue angle and a reference hue angle closest thereto; The initial actual grayscale of the pixel is determined according to the initial grayscale of at least part of the pixels and the reduction coefficient; the reduction coefficient is the ratio of the initial grayscale of the same hue of the same target pixel to its actual grayscale.

16. A method for displaying an image, wherein: Used in a liquid crystal display device, 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 image display method comprises: In the first working mode: Receive initial color information of each pixel of the m-th frame image; the initial color information of each pixel includes initial grayscales under n different tones; m and n are positive integers, n≥2; Determine a first adjustment coefficient and a second adjustment coefficient according to the initial brightness of each pixel reflected by the initial color information of each pixel and the preset brightness and adjustment coefficient correspondence 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; the second adjustment coefficient is greater than 1; Determine the actual grayscale of the initial grayscale of the first pixel whose initial brightness is greater than the brightness threshold according to the first adjustment coefficient; determine the actual grayscale of the initial grayscale of the second pixel whose brightness is less than the brightness threshold according to the second adjustment coefficient; obtain the actual color information of the pixel, so that the actual grayscale of the first pixel is less than its initial grayscale, and the actual grayscale of the second pixel is greater than its initial grayscale, to obtain the actual color information; The liquid crystal display panel is controlled to sequentially display n sub-field images of the color tone according to the actual color information to obtain the m-th frame image.

17. The image display method according to claim 16, wherein: Determine an actual grayscale for an initial grayscale of a first pixel whose initial brightness is greater than a brightness threshold according to the first adjustment coefficient; Determine an actual grayscale for an initial grayscale of a 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.

18. An electronic device, wherein: A liquid crystal display device comprising any one of claims 1-11.

Images