Display device and image conversion method thereof

Abstract

The invention discloses a display device and an image conversion method thereof. The display device comprises a plurality of pixel units. Each pixel unit comprises three primary color pixels, and the light emitting colors of at least one primary color pixel comprise two or three of three primary colors of R, G and B; in the same pixel unit, the gray-scale values of the R primary color, the G primary color and the B primary color are V1, V2 and V3 respectively, and the gray-scale values of the first primary color pixel, the second primary color pixel and the third primary color pixel are k1, k2 and k3 respectively; wherein in the same pixel unit, the gray-scale values V1, V2 and V3 of the R primary color, the G primary color and the B primary color and the gray-scale values k1, k2 and k3 of the first primary color pixel, the second primary color pixel and the third primary color pixel meet a primary color conversion mapping relation. By adopting the technical scheme, the incomplete color gamut can be realized, and the product performance is improved.

Description

Technical Field

[0001] The present invention relates to the field of display technologies, and in particular, to a display device and an image conversion method thereof. Background Art

[0002] Existing display systems usually include three primary colors, R, G, and B, which can also be referred to as the three primary colors, and different colors are combined by additive color mixing. To characterize the color performance of the display system, the color coordinates of the three primary colors are usually marked on the CIE chromaticity diagram. The triangle formed by the three color coordinates is the color range that the display system can reproduce, which is called the color gamut. The color gamut composed of the three primary colors R, G, and B is a full color gamut.

[0003] However, in some application scenarios, the display system does not need to reproduce all the colors in the full color gamut, that is, an incomplete color gamut can also meet the usage requirements. Summary of the Invention

[0004] The present invention provides a display device and an image conversion method thereof to achieve an incomplete color gamut and improve product performance.

[0005] According to one aspect of the present invention, a display device is provided, including: a plurality of pixel units; each pixel unit includes three primary color pixels, the emission color of the first primary color pixel includes at least the R primary color, the emission color of the second primary color pixel includes at least the G primary color, and the emission color of the third primary color pixel includes at least the B primary color; the emission color of at least one primary color pixel includes two or three of the three primary colors R, G, and B;

[0006] In the same pixel unit, the gray scale values of the R, G, and B primary colors are V1, V2, and V3 respectively, and the gray scale values of the first primary color pixel, the second primary color pixel, and the third primary color pixel are k1, k2, and k3 respectively;

[0007] Wherein, in the same pixel unit, the gray scale values V1, V2, and V3 of the R, G, and B primary colors and the gray scale values k1, k2, and k3 of the first primary color pixel, the second primary color pixel, and the third primary color pixel satisfy a primary color conversion mapping relationship.

[0008] According to another aspect of the present invention, an image conversion method for a display device is provided. The display device includes a plurality of pixel units; each pixel unit includes three primary color pixels, the emission color of the first primary color pixel includes at least the R primary color, the emission color of the second primary color pixel includes at least the G primary color, and the emission color of the third primary color pixel includes at least the B primary color; the emission color of at least one primary color pixel includes two or three of the primary colors R, G, and B;

[0009] The image conversion method includes:

[0010] Obtain the grayscale values V1, V2, and V3 of the R, G, and B primary colors, as well as the primary color conversion mapping relationship;

[0011] According to the primary color conversion mapping relationship, determine the grayscale values k1, k2, and k3 of the first primary color pixel, the second primary color pixel, and the third primary color pixel in the same pixel unit.

[0012] The technical solution of the present invention can adjust the brightness and combination ratio of different types of primary color pixels in the pixel unit by setting at least three primary color pixels in the pixel unit, and mix out various desired image colors; it also sets the emission color of at least one primary color pixel to include two or three of the three primary colors R, G, and B, which is beneficial to reducing the primary color purity in the primary color and increasing the proportion of each color in the primary color, thereby achieving the purpose of increasing the light flux, being beneficial to increasing the readability of the display device and reducing the power consumption of the display device; in addition, the display device can also determine the grayscale values k1, k2, and k3 of the first primary color pixel, the second primary color pixel, and the third primary color pixel according to the grayscale values V1, V2, and V3 of the R, G, and B primary colors and the primary color conversion mapping relationship, so that the display device can be compatible with most image processing systems and image processing standards. Even if the primary color pixels in the pixel unit are set to non-conventional R, G, and B pixels, it can still receive RGB-format image data and display the correct image according to the RGB-format image data.

[0013] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. Brief Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a schematic structural diagram of a display device provided by an embodiment of the present invention;

[0016] Figure 2 It is a schematic diagram of a chromaticity map provided by an embodiment of the present invention;

[0017] Figure 3 It is a partial structural schematic diagram of a pixel unit provided by an embodiment of the present invention;

[0018] Figure 4 It is another partial structural schematic diagram of a pixel unit provided by an embodiment of the present invention;

[0019] Figure 5 A schematic structural diagram of another display device provided by an embodiment of the present invention;

[0020] Figure 6 A partial schematic structural diagram of another pixel unit provided by an embodiment of the present invention;

[0021] Figure 7 A schematic flowchart of an image conversion method for a display device provided by an embodiment of the present invention;

[0022] Figure 8 A schematic flowchart of another image conversion method for a display device provided by an embodiment of the present invention. Detailed implementation manners

[0023] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0025] As described in the background art, when the primary colors of a display device are the three primary colors R, G, and B, all colors in the full color gamut can be restored. Although it has good color performance, the colors of the primary colors are relatively single, which will result in less reflected light in reflective displays or less transmitted light in transmissive displays, and cannot meet the readability or low-power and long-battery-life requirements of the product. If the long-battery-life requirement of the product is to be met, the size of the battery in the display device needs to be increased, which is not conducive to the thin and light design of the display device and still cannot meet the low-power requirement; at the same time, the increase in the size of the display device generally accompanies the increase in the display area, which will increase the power consumption of the display device and is not conducive to reducing power consumption.

[0026] To solve the above technical problems, an embodiment of the present invention provides a display device, including: a plurality of pixel units; the pixel units include three primary color pixels, the emission color of the first primary color pixel includes at least the R primary color, the emission color of the second primary color pixel includes at least the G primary color, and the emission color of the third primary color pixel includes at least the B primary color; the emission color of at least one primary color pixel includes two or three of the three primary colors R, G, and B; in the same pixel unit, the gray scale values of the R, G, and B primary colors are V1, V2, and V3 respectively, and the gray scale values of the first primary color pixel, the second primary color pixel, and the third primary color pixel are k1, k2, and k3 respectively; wherein, in the same pixel unit, the gray scale values V1, V2, and V3 of the R, G, and B primary colors and the gray scale values k1, k2, and k3 of the first primary color pixel, the second primary color pixel, and the third primary color pixel satisfy a primary color conversion mapping relationship.

[0027] By adopting the above technical solution, by setting at least three primary color pixels in the pixel unit, the brightness and combination ratio of different types of primary color pixels in the pixel unit can be adjusted to mix out a variety of required image colors; also, by setting the emission color of at least one primary color pixel to include two or three of the three primary colors R, G, and B, it is beneficial to reduce the purity of the primary color in the primary color and increase the proportion of each color in the primary color, so as to achieve the purpose of increasing the luminous flux, which is beneficial to increasing the readability of the display device and reducing the power consumption of the display device; in addition, the display device can also determine the gray scale values k1, k2, and k3 of the first primary color pixel, the second primary color pixel, and the third primary color pixel according to the gray scale values V1, V2, and V3 of the R, G, and B primary colors and the primary color conversion mapping relationship, so that the display device can be compatible with most image processing systems and image processing standards. Even if the primary color pixels in the pixel unit are set to non-conventional R, G, and B pixels, it can still receive RGB format image data and display the correct image according to the RGB format image data.

[0028] The above is the core idea of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention.

[0029] Figure 1 For the structural schematic diagram of a display device provided by an embodiment of the present invention, refer to Figure 1 , the display area AA of the display device includes a plurality of pixel units PU, the pixel units include three primary color pixels, the emission color of the first primary color pixel P1 includes at least the R primary color, the emission color of the second primary color pixel P2 includes at least the G primary color, and the emission color of the third primary color pixel P3 includes at least the B primary color. The emission color of at least one primary color pixel includes two or three of the three primary colors R, G, and B.

[0030] In the same pixel unit PU, the grayscale values of the primary colors R, G, and B are V1, V2, and V3 respectively, and the grayscale values of the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 are k1, k2, and k3 respectively. Among them, in the same pixel unit PU, the grayscale values V1, V2, and V3 of the primary colors R, G, and B of the same pixel unit PU satisfy the primary color conversion mapping relationship with the grayscale values k1, k2, and k3 of the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3.

[0031] Among them, the display device may include a display panel, or may include any electronic product with a display function such as a display device. The primary color pixel refers to the smallest light-emitting unit in the display device. One primary color pixel corresponds to one basic light-emitting color, and the primary color pixel can independently control the brightness and color. The pixel unit PU refers to the smallest unit for displaying image points in the display device. The pixel unit PU is composed of a variety of primary color pixels. By adjusting the brightness and combination ratio of different types of primary color pixels in the pixel unit PU, the required image color can be mixed.

[0032] For the three primary color pixels in the same pixel unit PU, at least one primary color pixel is a mixed color of the primary colors R, G, and B, that is, at least one primary color pixel is not an R, G, or B pixel. The required color gamut range can be selected according to actual needs, so as to select the corresponding three primary colors. Among them, the mixed color of the primary colors R, G, and B can be an intermediate color or white. The intermediate color refers to a color formed by mixing two primary colors. For example, the primary colors R and B can be mixed to produce magenta (M), the primary colors R and G can be mixed to produce yellow (Y), and the primary colors G and B can be mixed to produce cyan (C); white refers to a color formed by mixing three primary colors. The primary colors R, G, and B can be mixed to produce white (W). At least one primary color pixel in the same pixel unit PU is an intermediate color pixel or a white pixel. In this way, there are 28 possible primary color combination methods in the pixel unit PU (RGM, RGC, MGB, YGB, RYB, RCB, RGW, WGB, RWB, RYM, YGC, MCB, RYC, RCM, YGM, MGC, MYB, YCB, RYW, YGW, WGC, WCB, MWB, RWM, YWM, YCW, WCM, YCM). It should be noted that Figure 2 This is a schematic diagram of a chromaticity map provided by an embodiment of the present invention. Refer to Figure 2 , due to the characteristics of additive color mixing, the color coordinates of the intermediate color can be located on the line connecting the color coordinates of the two primary colors used for color mixing, but not limited to the midpoint of the line. Among them, Figure 2 Exemplarily shows an incomplete color gamut when the primary color combination method in the pixel unit PU is RGM.

[0033] In the same pixel unit PU, the gray-scale values V1, V2, and V3 of the primary colors R, G, and B are gray-scale input values, which can also be referred to as luminance input values or initial image data (the initial image data may include V1, V2, and V3, but is not limited to V1, V2, and V3). V1, V2, and V3 are all greater than or equal to zero, and are generally provided by the application program or operating system of the display device. When the display primary colors of the display device are not R, G, and B, they cannot be directly provided to the display driving circuit of the display device; the gray-scale values k1, k2, and k3 of the first primary-color pixel P1, the second primary-color pixel P2, and the third primary-color pixel P3 are gray-scale output values, which can also be referred to as luminance output values or display image data (the display image data may include k1, k2, and k3, but is not limited to k1, k2, and k3). k1, k2, and k3 are also all greater than or equal to zero, and can generally be directly provided to the display driving circuit of the display device. In an alternative embodiment, generally 255 gray scales are used, that is, the range of the gray-scale value is from 0 gray scale to 255 gray scales.

[0034] Since most image processing systems and image processing standards adopt image data in the RGB format, even if the display primary colors of the display device are not R, G, and B, the display controller of the display device will still receive the initial image data in the RGB format, that is, the initial image data based on the primary colors R, G, and B. It is necessary to convert the initial image data into the display image data corresponding to the display primary colors of the display device so that the display device can display the correct image. Before and after the conversion, the gray-scale values V1, V2, and V3 of the primary colors R, G, and B and the gray-scale values k1, k2, and k3 of the first primary-color pixel P1, the second primary-color pixel P2, and the third primary-color pixel P3 satisfy the primary-color conversion mapping relationship.

[0035] Exemplarily, continuing to refer to Figure 1 , in addition to including a plurality of pixel units PU located in the display area AA, the display device may further include an image conversion device 91 and a display driving circuit 92. The image conversion device 91 can receive the initial image data of each pixel unit PU, obtain the gray-scale values V1, V2, and V3 of the primary colors R, G, and B, and the three-dimensional coordinate points (x R , y R , z R ), (x G , y G , z G ), (x B , y B , z B ) of the primary colors R, G, and B in the CIE chromaticity diagram. From this, the three-dimensional coordinate points (x 0 , y 0 , z 0), and a brightness parameter; the image conversion device 91 can, according to the stored base color coordinates (x 1 , y 1 , z 1 ) of each base color pixel, (x 2 , y 2 , z 2 ), (x 3 , y 3 , z 3 ), define the relational equation (x 0 , y 0 , z 0 ) = e1×(x 1 , y 1 , z 1 ) + e2×(x 2 , y 2 , z 2 ) + e3×(x 3 , y 3 , z 3 ), and can determine the unique solutions of the relative brightnesses e1, e2, e3 of the first base color pixel P1, the second base color pixel P2, and the third base color pixel P3 in each pixel unit PU. Combining with the brightness parameter, the gray scale values k1, k2, k3 of the first base color pixel P1, the second base color pixel P2, and the third base color pixel P3 can be obtained. The unique solution of the above calculation formula is the base color conversion mapping relationship. It should be noted that this embodiment only exemplarily illustrates a base color conversion mapping relationship, but is not limited thereto. The base color conversion mapping relationship can be set according to actual needs, and the present invention embodiment does not make specific limitations on the base color conversion mapping relationship.

[0036] After the image conversion device 91 determines the gray scale values k1, k2, k3 of the first base color pixel P1, the second base color pixel P2, and the third base color pixel P3 in each pixel unit PU, the gray scale values k1, k2, k3 of the first base color pixel P1, the second base color pixel P2, and the third base color pixel P3 in each pixel unit PU can be output to the display driving circuit 92. The display driving circuit 92 can, according to the gray scale values k1, k2, k3 of the first base color pixel P1, the second base color pixel P2, and the third base color pixel P3 in each pixel unit PU, determine the driving signals D1, D2, D3 of the first base color pixel P1, the second base color pixel P2, and the third base color pixel P3 in each pixel unit PU and the driving timing related to the driving signals, and provide the driving signals D1, D2, D3 to the first base color pixel P1, the second base color pixel P2, and the third base color pixel P3 in each pixel unit PU in the display area AA according to the driving timing, so that the first base color pixel P1, the second base color pixel P2, and the third base color pixel P3 in each pixel unit PU are displayed.

[0037] It can be understood that the display brightness of the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 in each pixel unit PU corresponds to the gray scale values k1, k2, and k3 of the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 in each pixel unit PU. When the gray scale value of a certain primary color pixel in the pixel unit PU is zero, that primary color pixel does not emit light. When the gray scale value of a certain primary color pixel in the pixel unit PU reaches the maximum value, the display brightness of that primary color pixel reaches the maximum value.

[0038] It can also be understood that the human eye's visual system's perception of brightness is based on the integral result of the light-emitting brightness, light-emitting time, and light-emitting area of the light-emitting element LED. This integral result is the display brightness of the primary color pixel and also the perceived brightness by the human eye. When the primary color pixel emits light for display, the human eye's visual system will integrate according to the light-emitting time, light-emitting brightness, and light-emitting area of the primary color pixel. The human eye's visual system's perception of brightness is related to the integral value. The larger the integral value, the stronger the brightness perceived by the human eye's visual system. Under the same light-emitting time and the same light-emitting area, the greater the light-emitting brightness of the primary color pixel, the greater the brightness perceived by the human eye's visual system; under the same light-emitting brightness and the same light-emitting area, the longer the light-emitting time of the primary color pixel, the greater the brightness perceived by the human eye's visual system; under the same light-emitting time and light-emitting brightness, the larger the light-emitting area of the primary color pixel, the greater the brightness perceived by the human eye's visual system. Therefore, the display brightness of the primary color pixel can be changed by adjusting the light-emitting brightness, light-emitting duration, and light-emitting area of the primary color pixel.

[0039] For example, for active light-emitting displays such as liquid crystals and LEDs, the data voltage received by the primary color pixel can be regulated according to the gray scale value, thereby regulating the light-emitting brightness of the primary color pixel; for reflective displays, transmissive displays, or transflective displays such as electrophoretic displays and projection displays, the light-emitting duration (field-sequential color mixing display) of the primary color pixel can be regulated according to the gray scale value, or the number of light-emitting of the primary color pixel (spatial color mixing display) can also be regulated according to the gray scale value, thereby regulating the light-emitting area of the primary color pixel. That is, in display devices of different display forms, the gray scale values k1, k2, and k3 of the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 can correspond to information such as the corresponding light-emitting brightness, light-emitting duration, or light-emitting area. According to the gray scale value, parameters such as the data voltage, light-emitting duration, or number of light-emitting of the primary color pixel can be regulated.

[0040] It should be noted that the "emission color", "emission brightness", "emission duration", "emission area", etc. mentioned in the above description refer to the colors that the primary color pixels can present, the luminous flux presenting a certain color, the presenting duration presenting a certain color, and the area presenting a certain color, and are not limited to active emission. The colors, luminous flux, duration, and area presented through active emission, reflection, transmission, etc. can be referred to as "emission color", "emission brightness", "emission duration", and "emission area".

[0041] The display device provided by the embodiment of the present invention can adjust the brightness and combination ratio of different types of primary color pixels in the pixel unit by setting at least three primary color pixels in the pixel unit, and mix out a variety of required image colors; by setting the emission color of at least one primary color pixel to include two or three of the three primary colors R, G, and B, it is beneficial to reduce the purity of the primary colors in the primary color and increase the proportion of each color in the primary color, so as to achieve the purpose of increasing the luminous flux, which is beneficial to increasing the readability of the display device and reducing the power consumption of the display device; in addition, the display device can also determine the gray scale values k1, k2, and k3 of the first primary color pixel, the second primary color pixel, and the third primary color pixel according to the gray scale values V1, V2, and V3 of the R, G, and B primary colors and the primary color conversion mapping relationship, so that the display device can be compatible with most image processing systems and image processing standards. Even if the primary color pixels in the pixel unit are set to unconventional R, G, and B pixels, it can receive RGB format image data and display the correct image according to the RGB format image data.

[0042] In an optional embodiment, the display device of the embodiment of the present invention is a reflective display device, a transmissive display device, or a transflective display device.

[0043] Among them, the reflective display device includes but is not limited to a reflective electrophoretic display, a reflective liquid crystal display, a reflective electronic ink display device, an interferometric modulator display (IMOD) device, etc.; the transmissive display device includes but is not limited to a transmissive liquid crystal display, an LED display, an electronic display screen, etc.; the transflective display device includes but is not limited to a transflective liquid crystal display, an enhanced electronic ink screen, etc. In an optional implementation manner, the display device may include display products such as outdoor billboards, outdoor traffic signs, electronic paper, readers, and industrial control devices.

[0044] Specifically, the display device provided by the embodiments of the present invention can reduce the primary color purity in at least one type of primary color pixel. When the display device is a reflective display device, at least one type of primary color pixel can reflect light of multiple primary colors, thereby increasing the light that the primary color pixel can reflect, which is beneficial to increasing the readability of the display device. When the display device is a transmissive display device, at least one type of primary color pixel can transmit light of multiple primary colors, thereby increasing the light that the primary color pixel can transmit, which is beneficial to reducing the power consumption of the display panel. When the display device is a transflective display device, at least one type of primary color pixel can both transmit light of multiple primary colors and reflect light of multiple primary colors, which can increase the readability of the display device and reduce the power consumption of the display device.

[0045] In yet another alternative embodiment, the pixel unit includes at least three microcavities; each microcavity includes at least one type of color particle, and one microcavity can present at least one primary color; the pixel unit can present three primary colors simultaneously.

[0046] Exemplarily, Figure 3 is a partial structural schematic diagram of a pixel unit provided by an embodiment of the present invention. Referring to Figure 3 , the pixel unit PU includes three microcavities, and each microcavity can correspond to one type of primary color pixel. The microcavity can be composed of a microcavity matrix 81 and a sealing layer 82. A dispersion liquid 83 and two types of color particles can be arranged in the microcavity. One type of color particle can be a primary color particle (71, 72, or 73), and the other type of color particle can be a black particle 70. The primary color particles (71, 72, or 73) and the black particle 70 can carry charges with opposite polarities. A first electrode 61 and a second electrode 62 are respectively arranged on the upper and lower sides of each microcavity. By applying corresponding voltages and polarities to the first electrode 61 and the second electrode 62, the positions of the primary color particles (71, 72, or 73) and the black particle 70 in the microcavity can be controlled. In the first primary color pixel P1, when the first primary color particle 71 is located on the side close to the display side in the microcavity, the first primary color pixel P1 can present the first primary color. In the second primary color pixel P2, when the second primary color particle 72 is located on the side close to the display side in the microcavity, the second primary color pixel P2 can present the second primary color. In the third primary color pixel P3, when the third primary color particle 73 is located on the side close to the display side in the microcavity, the third primary color pixel P3 can present the third primary color.

[0047] The display driving circuit 92 can provide driving signals D1, D2, and D3 to the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 in each pixel unit PU according to the gray scale values k1, k2, and k3 of the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 in each pixel unit PU, control the voltage, polarity, and sustain time of the first electrode 61 and the second electrode 62 in each pixel unit PU, and can control the light emitting duration of the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3, so as to control the target color and target brightness presented by each pixel unit PU, and achieve field sequential color mixing display. Among them, in the same pixel unit PU, the light emitting periods of the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 may overlap or may not overlap, and the embodiments of the present invention do not limit this.

[0048] In another optional embodiment, the pixel unit includes one or more microcavities; each microcavity includes at least three kinds of color particles, and one microcavity can present at least three primary colors.

[0049] Exemplarily, Figure 4 is a partial structural schematic diagram of another pixel unit provided by the embodiment of the present invention. Refer to Figure 4 , the pixel unit PU includes a microcavity, and a dispersion liquid 83 and four kinds of color particles can be arranged in the microcavity. Among them, three kinds of color particles can be primary color particles (71, 72, 73), and one kind of color particle can be a black particle 70. The four kinds of color particles can respectively carry strong positive charges, weak positive charges, strong negative charges, and weak negative charges. By applying corresponding voltages and polarities to the first electrode 61 and the second electrode 62, the positions of the four kinds of color particles in the microcavity can be controlled. For example, the first electrode 61 can be used as a common electrode, and a strong negative potential is provided to the second electrode 62, so that the color particles with strong negative and weak negative charges can move towards the direction of the first electrode 61, so that the primary color pixel presents a mixed color of two kinds of color particles; a weak positive potential can also be provided to the second electrode 62 to make the color particles with strong positive and weak positive charges move towards the direction of the first electrode 61, and due to the strong interaction between the strong positive and strong negative charges, finally the color particles with weak positive charges reach the side close to the display side in the microcavity, and the primary color pixel can present the color of one kind of color particle. At different moments, the pixel unit PU can respectively present the first primary color, the second primary color, and the third primary color, so that the pixel unit PU can include the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3.

[0050] The display driving circuit 92 can provide voltages and polarities capable of controlling the pixel unit PU to present the three primary colors to the first electrode 61 and the second electrode 62 of each pixel unit PU in a time-sharing manner according to the grayscale values ​​k1, k2, k3 of the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 in each pixel unit PU, and control the duration for which the pixel unit PU presents the three primary colors, thereby controlling the target color and target brightness presented by each pixel unit PU to achieve field sequential color mixing display. Alternatively, when multiple pixel units PU displayed by the display device show the same target color, the display driving circuit 92 can also control the number of pixel units PU presenting the first primary color, the second primary color, and the third primary color according to the grayscale values ​​k1, k2, k3 of the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3, and use the spatial proportion of different primary color pixels to achieve grayscale control, thereby achieving spatial color mixing display, such as Figure 5 It should be noted that the figure only exemplarily shows that the top view shape of the pixel unit PU is a rectangle, and in other optional embodiments, the top view shape of the pixel unit PU can also be a circle, a semicircle, a triangle, a trapezoid, a hexagon, or the like.

[0051] For example, Figure 6 A partial structural diagram of another pixel unit provided in an embodiment of the present invention, referring to Figure 6 , the pixel unit PU includes three micro chambers, each of which may correspond to three primary color pixels, and a dispersion 83 and four color particles may be provided in the micro chamber, wherein the three color particles may be primary color particles (71, 72, 73), and one color particle may be a black particle 70. The first primary color pixel P1, the second primary color pixel P2 and the third primary color pixel P3 may all present three primary colors, but during the working time of the display device, the first primary color pixel P1 may only present the first primary color, the second primary color pixel P2 may only present the second primary color, and the third primary color pixel P3 may only present the third primary color. The display driving circuit 92 may control the light emission duration of the first primary color pixel P1, the second primary color pixel P2 and the third primary color pixel P3 in each pixel unit PU according to the grayscale values ​​k1, k2 and k3 of the first primary color pixel P1, the second primary color pixel P2 and the third primary color pixel P3 in each pixel unit PU. This is beneficial to improving the refresh frequency, and the structures of the three primary color pixels in the pixel unit PU are completely identical, and the preparation processes can also be completely identical, which is beneficial to reducing the difficulty of production and maintenance.

[0052] For the convenience of description, unless otherwise specified, the embodiments of the present invention are described by taking an example in which a pixel unit includes three primary color pixels, namely, a first primary color pixel, a second primary color pixel and a third primary color pixel, and the three primary color pixels can simultaneously present different primary colors, to exemplarily illustrate the technical solutions of the embodiments of the present invention.

[0053] Optionally, when the gray scale values of the R, G, and B primary colors in the same pixel unit PU are V1, V2, and V3 respectively, the luminance stimulus value Y of the R primary color R is the first R primary color stimulus value Y R , the luminance stimulus value Y of the G primary color G is the first G primary color stimulus value Y G , the luminance stimulus value Y of the B primary color B is the first B primary color stimulus value Y B ; when the gray scale values of the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 are k1, k2, and k3 respectively, the sum of the luminance stimulus values of the R primary color in the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 is the second R primary color stimulus value Y′ R , the sum of the luminance stimulus values of the G primary color is the second G primary color stimulus value Y' G , the sum of the luminance stimulus values of the B primary color is the second B primary color stimulus value Y' B ; the primary color conversion mapping relationship is: Y R = Y′ R , Y G = Y′ G , Y B = Y′ B .

[0054] Among them, the luminance stimulus value refers to the degree of stimulation of light on the human eye. Generally, the luminance stimulus value refers to the normalized luminance weight. The luminance stimulus value multiplied by the luminance parameter is equal to the actual luminance value, and the maximum luminance stimulus value multiplied by the luminance parameter is equal to the maximum display luminance that the display device can actually achieve. In the same pixel unit PU, the sum of the maximum luminance stimulus values Y Rmax of the R primary color, Y Gmax of the G primary color, and Y Bmax of the B primary color is 1, that is, when the R primary color, G primary color, and B primary color in the same pixel unit PU are all at the maximum luminance, white light with a luminance stimulus value of 1 can be obtained by mixing.

[0055] Luminance stimulus value Among them, S(λ) is the spectral power distribution, that is, the radiation intensity of light at a wavelength of λ, is the color matching function, which reflects the wavelength sensitivity of the human eye to luminance (green). The additivity of the luminance stimulus value is determined by the additivity of the spectrum. The luminance stimulus value of the pixel unit PU is equal to the sum of the luminance stimulus values of each primary color pixel in the pixel unit.

[0056] Specifically, the luminance stimulus value of the first primary color pixel P1 is Y 1 = Y 1-R + Y 1-G + Y 1-B , Y1-R , Y 1-G , Y 1-B are the luminance stimulation values of the R primary color, the G primary color, and the B primary color in the first primary color pixel P1 respectively; the luminance stimulation value of the second primary color pixel P2 is Y 2 = Y 2-R + Y 2-G + Y 2-B , Y 2-R , Y 2-G , Y 2-B are the luminance stimulation values of the R primary color, the G primary color, and the B primary color in the second primary color pixel P2 respectively; the luminance stimulation value of the third primary color pixel P3 is Y 3 = Y 3-R + Y 3-G + Y 3-B , Y 3-R , Y 3-G , Y 3-B are the luminance stimulation values of the R primary color, the G primary color, and the B primary color in the third primary color pixel P3 respectively; Y' R = Y 1-R + Y 2-R + Y 3-R = Y R , Y' G = Y 1-G + Y 2-G + Y 3-G = Y G , Y' B = Y 1-B + Y 2-B + Y 3-B = Y B , the luminance stimulation value Y of the pixel unit PU included in the initial image data in the RGB format before conversion is Y R + Y G + Y B , the luminance stimulation value Y' of the pixel unit PU included in the display image data corresponding to the display primary color of the display device after conversion is Y 1 + Y 2 + Y 3 = Y' R + Y' G + Y' B = Y R + Y G + Y B = Y. After converting the initial image data in the RGB format into the display image data corresponding to the display primary color of the display device, the luminance stimulation values of each pixel unit PU remain unchanged, so that the display brightness of each pixel unit PU remains unchanged, which is beneficial to ensuring the readability of the display device and reducing the power consumption of the display device.

[0057] Meanwhile, Y R = Y′ R ,Y G = Y′ G ,Y B = Y′ B can make the gray-scale values k1, k2, and k3 of the first primary-color pixel P1, the second primary-color pixel P2, and the third primary-color pixel P3 in the same pixel unit PU have a unique solution, and can also make the luminance stimulus values of the R, G, and B primary colors in the pixel unit PU unchanged, which is beneficial to reducing color deviation.

[0058] It can be understood that after being converted into display image data corresponding to the display primary colors of the display device, the luminance stimulus value of the pixel unit PU remains unchanged, which can make the target luminance of the pixel unit PU unchanged.

[0059] It can also be understood that the initial image data in RGB format includes not only the luminance stimulus value Y, but also the chromaticity stimulus value X and the chromaticity stimulus value Z. Among them, the chromaticity stimulus value Chromaticity stimulus value S(λ) is the spectral power distribution, that is, the radiation intensity of light at a wavelength of λ, is the color matching function, which reflects the wavelength sensitivity of the human eye to red, is the color matching function, which reflects the wavelength sensitivity of the human eye to blue. From the luminance stimulus value Y, the chromaticity stimulus value X, and the chromaticity stimulus value Z, the chromaticity coordinate point (x 0 , y 0 ) can be determined, The z of the chromaticity coordinate point 0 = 1 - x 0 - y 0 , which can generally be ignored.

[0060] Due to the additivity of the spectrum, the additivity of the chromaticity stimulus value is determined. The chromaticity stimulus value of the pixel unit PU is equal to the sum of the chromaticity stimulus values of each primary-color pixel in the pixel unit. The chromaticity coordinate point of the pixel unit PU in the initial image data in RGB format before conversion is (x 0 , y 0 ),

[0061]

[0062] Among them, are the chromaticity stimulus values X of the R, G, and B primary colors respectively, are the chromaticity stimulus values Z of the R, G, and B primary colors respectively.

[0063] The chromaticity coordinate point of the pixel unit in the display image data corresponding to the display primary colors of the display device after conversion is (x′ 0 , y′0 )

[0064]

[0065] Among them, are the chromaticity stimulus values X of the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3, respectively, are the chromaticity stimulus values Z of the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3, respectively.

[0066] Since the chromaticity stimulus values X and Z are related not only to the luminance stimulus value Y but also to the chromaticity coordinates of the primary colors, and the three primary colors in the pixel unit of the display device are not exactly the same as the R, G, and B primary colors, that is, the chromaticity coordinates (x 1 , y 1 ), (x 2 , y 2 ), (x 3 , y 3 ) of the three primary colors and the chromaticity coordinates (x R , y R ), (x G , y G ), (x B , y B ) of R, G, and B are not exactly the same, and there may be x’ 0 ≠x 0 , and / or, y’ 0 ≠y 0 . After converting the initial image data in RGB format into display image data corresponding to the display primary colors of the display device, the target color of the pixel unit PU may change. However, when the display device includes display products with low requirements for color performance such as outdoor bus stops, outdoor traffic signs, e-paper, readers, industrial control devices, etc., it does not affect the actual use.

[0067] In an optional embodiment, the sum of the luminance stimulus values of the R primary color in the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 of the same pixel unit PU is Y' R ,

[0068]

[0069] the sum of the luminance stimulus values of the G primary color is Y′ G ,

[0070]

[0071] the sum of the luminance stimulus values of the B primary color is Y′ B ,

[0072]

[0073] In the formula, Y 1-Rmax , Y 1-Gmax , Y 1-Bmax are respectively the R primary color stimulus value component, G primary color stimulus value component, and B primary color stimulus value component in the maximum luminance stimulus value Y 1max of the first primary color pixel P1, where 0 < Y 1-Rmax ≤ Y Rmax , 0 ≤ Y 1-Gmax ≤ Y Gmax , 0 ≤ Y 1-Bmax ≤ Y Bmax ; Y 2-Rmax , Y 2-Gmax , Y 2-Bmax are respectively the R primary color stimulus value component, G primary color stimulus value component, and B primary color stimulus value component in the maximum luminance stimulus value Y 2max of the second primary color pixel P2, where 0 ≤ Y 2-Rmax ≤ Y Rmax , 0 < Y 2-Gmax ≤ Y Gmax , 0 ≤ Y 2-Bmax ≤ Y Bmax ; Y 3-Rmax , Y 3-Gmax , Y 3-Bmax are respectively the R primary color stimulus value component, G primary color stimulus value component, and B primary color stimulus value component in the maximum luminance stimulus value Y 3max of the third primary color pixel P3, where 0 ≤ Y 3-Rmax ≤ Y Rmax , 0 ≤ Y 3-Gmax ≤ Y Gmax , 0 < Y 3-Bmax ≤ Y Bmax .

[0074] Specifically, in the same pixel unit PU,

[0075] the luminance stimulus value of the R primary color

[0076] the luminance stimulus value of the G primary color

[0077] the luminance stimulus value of the B primary color

[0078] In the formula, Y Rmax , Y Gmax , Y Bmax are respectively the maximum luminance stimulus values of the R primary color, G primary color, and B primary color.

[0079] The luminance stimulus value of the pixel unit PU included in the initial image data in the RGB format before conversion is Y,

[0080]

[0081] The luminance stimulus value of the first primary color pixel P1 is Y 1 ,

[0082]

[0083] The luminance stimulus value of the second primary color pixel P2 is Y 2 ,

[0084]

[0085] The luminance stimulus value of the third primary color pixel P3 is Y 3 ,

[0086]

[0087] The luminance stimulus value of the pixel unit PU included in the display image data corresponding to the display primary color of the display device after conversion is Y ′ ,

[0088]

[0089] The emission color of the first primary color pixel P1 includes at least the R primary color, Y 1-Rmax >0, Y 1-Gmax and Y 1-Bmax can be zero; the emission color of the second primary color pixel P2 includes at least the G primary color, Y 2-Gmax >0, Y 2-Rmax and Y 2-Bmax can be zero; the emission color of the third primary color pixel P3 includes at least the G primary color, Y 3-Bmax >0, Y 3-Rmax and Y 3-Gmax can be zero; however, Y 1-Gmax , Y 1-Bmax , Y 2-Rmax , Y 2-Bmax , Y 3-Rmax and Y 3-Gmax are not simultaneously zero.

[0090] Exemplarily, taking the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 as R, G, and M primary color pixels respectively, and the maximum gray level being 255 as an example, the emission color of the first primary color pixel P1 (R primary color pixel) includes the R primary color, the emission color of the second primary color pixel P2 (G primary color pixel) includes the G primary color, and the emission color of the second primary color pixel P2 (M primary color pixel) includes the R primary color and the B primary color.

[0091] The luminance stimulus value of the pixel unit PU included in the initial image data in RGB format before conversion The luminance stimulus value of the pixel unit PU included in the display image data corresponding to the display primary colors of the display device after conversion

[0092] From Y R = Y′ R ,Y G = Y′ G ,Y B = Y′ B We can obtain:

[0093]

[0094] From the above formula, we can obtain the unique solutions of k1, k2, k3 related to V1, V2, V3, which are the primary color conversion mapping relationships.

[0095] In an optional embodiment, Y 1max + Y 2max + Y 3max = 1.

[0096] Specifically, Y 1max + Y 2max + Y 3max = (Y 1-Rmax + Y 1-Gmax + Y 1-Bmax ) + (Y 2-Rmax + Y 2-Gmax + Y 2-Bmax ) + (Y 3-Rmax + Y 3-Gmax + Y 3-Bmax ) = 1. In the same pixel unit PU, when the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 are all at the maximum brightness, white light with a luminance stimulus value of 1 can be obtained by mixing. Thus, when implementing a white screen, it is only necessary to make k1 = k2 = k3 directly, the control is relatively simple, it is easier to restore white, and at the same time, it is beneficial to present more accurate colors and improve the visual effect.

[0097] Exemplarily, taking the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 as R, G, and M primary color pixels respectively, and the maximum gray level being 255 as an example, the emission color of the first primary color pixel P1 (R primary color pixel) includes the R primary color, the emission color of the second primary color pixel P2 (G primary color pixel) includes the G primary color, and the emission color of the second primary color pixel P2 (M primary color pixel) includes the R primary color and the B primary color. In the maximum luminance stimulus value Y 1max of the first primary color pixel P1, Y 1-Gmax = 0, Y 1-Bmax = 0, Y 1max = Y 1-Rmax ; in the maximum luminance stimulus value Y 2maxIn it, Y 2-Rmax = 0, Y 2-Bmax = 0, Y 2max = Y 2-Gmax ; In the maximum luminance stimulus value Y of the third primary color pixel P3 3max In it, Y 3-Gmax = 0, Y 3max = Y 3-Rmax + Y 3-Bmax ; Y 1max + Y 2max + Y 3max = Y 1-Rmax + Y 2-Gmax + Y 3-Rmax + Y 3-Bmax .

[0098] From Y Rmax + Y Gmax + Y Bmax = 1, it can be obtained that:

[0099] Y 1-Rmax + Y 3-Rmax = Y Rmax ,

[0100] Y 2-Gmax = Y Gmax ,

[0101] Y 3-Bmax = Y Bmax ,

[0102] Obtained:

[0103] Y 1max = Y 1-Rmax = Y Rmax - Y ΔR ;

[0104] Y 2max = Y 2-Gmax = Y Gmax ;

[0105] Y 3max = Y 3-Rmax + Y 3-Bmax = Y Bmax + Y ΔR ; Then combined with Y R = Y' R , Y G = Y' G , Y B = Y' B It can be obtained that:

[0106]

[0107] The unique solutions of k1, k2, and k3 related to V1, V2, and V3 can be obtained from the above formula:

[0108]

[0109] k2 = V2;

[0110] k3 = V3.

[0111] Based on the above embodiments, when Y 1max + Y 2max + Y 3max = 1, the chromaticity coordinate point (x 0 , y 0 ) of the pixel unit PU in the initial image data in RGB format before conversion is equal to the chromaticity coordinate point (x' 0 , y' 0 ) of the pixel unit PU in the display image data corresponding to the display primary colors of the display device after conversion.

[0112] Specifically, Y, X, and Z are the tristimulus values of the pixel unit PU in the initial image data in RGB format before conversion, and Y ′ , X ′ , Z ′ are the tristimulus values of the pixel unit PU in the display image data corresponding to the display primary colors of the display device after conversion.

[0113] Exemplarily, taking the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 as R, G, and M primary color pixels respectively, and the maximum gray level being 255 as an example for illustration.

[0114] In the initial image data in RGB format before conversion:

[0115]

[0116]

[0117] In the display image data corresponding to the display primary colors of the display device after conversion:

[0118] From Y ′ = Y, X ′ = X, Z ′ = Z, it can be determined that (x 0 , y 0 ) = (x' 0 , y' 0 ). After being converted into the display image data corresponding to the display primary colors of the display device, the target brightness and target color of the pixel unit PU remain unchanged.

[0119] In yet another alternative embodiment, the maximum luminance stimulus values of the R, G, and B primary colors are Y Rmax , Y Gmax , Y Bmax ; Y 1-Rmax = Y Rmax , Y 2-Gmax = Y Gmax Y, Y 3-Bmax = Y Bmax .

[0120] Specifically, when the emission color of the first primary color pixel P1 only includes the R primary color, the maximum luminance stimulus value Y 1max = Y 1-Rmax = Y Rmax ; when the emission color of the first primary color pixel P1 includes the R primary color and other primary colors, the R primary color stimulus value component Y 1max in the maximum luminance stimulus value Y 1-Rmax = Y Rmax . When the emission color of the second primary color pixel P2 only includes the G primary color, the maximum luminance stimulus value Y 2max = Y 2-Gmax = Y Gmax ; when the emission color of the second primary color pixel P2 includes the G primary color and other primary colors, the G primary color stimulus value component Y 2max in the maximum luminance stimulus value Y 2-Gmax = Y Gmax . When the emission color of the third primary color pixel P3 only includes the B primary color, the maximum luminance stimulus value Y 3max = Y 3-Bmax = Y Bmax ; when the emission color of the third primary color pixel P3 includes the B primary color and other primary colors, the G primary color stimulus value component Y 3max in the maximum luminance stimulus value Y 3-Bmax = Y Bmax . In this way, the maximum luminance stimulus values of each primary color pixel can be made as large as possible, and the primary color conversion mapping relationship can also be simplified.

[0121] Exemplarily, taking the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 as R, G, and M primary color pixels respectively, and the maximum gray level being 255 as an example:

[0122] Y 1max = Y 1-Rmax = Y Rmax ;

[0123] Y 2max = Y 2-Gmax = Y Gmax ;

[0124] Y 3max = Y 3-Rmax + Y 3-Bmax = Y Bmax + Y ΔR ;

[0125] Combined with Y R = Y' R , Y G = Y' G , Y B = Y' B We can get:

[0126]

[0127]

[0128] The primary color conversion mapping relationship is:

[0129]

[0130] Based on the above embodiments, in the maximum luminance stimulus value Y of the first primary color P1 1max wherein, Y 1-Gmax = 0 or Y Gmax , Y 1-Bmax = 0 or Y Bmax ; in the maximum luminance stimulus value Y of the second primary color P2 2max wherein, Y 2-Rmax = 0 or Y Rmax , Y 2-Bmax = 0 or Y Bmax ; in the maximum luminance stimulus value Y of the third primary color P3 3max wherein, Y 3-Rmax = 0 or Y Rmax , Y 3-Bmax = 0 or Y Gmax .

[0131] Specifically, when the light-emitting color of the primary color pixel includes one or more primary colors, the primary color stimulus value components in the maximum luminance stimulus value of the primary color pixel are all the maximum values. In this way, the maximum luminance stimulus values of each primary color pixel can be made to be the maximum values, and the primary color conversion mapping relationship can be further simplified.

[0132] Exemplarily, taking the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 as R, G, and M primary color pixels respectively, and the maximum gray level being 255 as an example:

[0133] Y 1max = Y 1-Rmax = Y Rmax ;

[0134] Y 2max = Y 2-Gmax = Y Gmax ;

[0135] Y 3max = Y 3-Rmax + Y 3-Bmax = Y Bmax + Y Rmax ;

[0136] Combined with Y R = Y' R Y G = Y' G Y B = Y' B we can get:

[0137]

[0138] The mapping relationship of primary color conversion is:

[0139] k2 = V2; k3 = V3.

[0140] In another optional embodiment, the gamma value of the display device is 1, i.e., γ = 1. In this way, it is beneficial to further simplify the mapping relationship of primary color conversion.

[0141] Exemplarily, taking the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 as R, G, and M primary color pixels respectively, and the maximum gray level is 255 as an example:

[0142] Y 1max = Y 1-Rmax = Y Rmax ;

[0143] Y 2max = Y 2-Gmax = Y Gmax ;

[0144] Y 3max = Y 3-Rmax + Y 3-Bmax = Y Bmax + Y Rmax ;

[0145] Combined with Y R = Y' R Y G = Y' G Y B = Y' B we can get:

[0146]

[0147] The base color conversion mapping relationship is as follows:

[0148] k1 = V1 - V3; k2 = V2; k3 = V3.

[0149] Optionally, the base color conversion mapping relationship can also be: in the same pixel unit PU, the sum of the gray scale values of the base color pixels whose emission color includes the R primary color is equal to V1, the sum of the gray scale values of the base color pixels whose emission color includes the G primary color is equal to V2, and the sum of the gray scale values of the base color pixels whose emission color includes the B primary color is equal to V3.

[0150] Exemplarily, taking the first base color pixel P1, the second base color pixel P2, and the third base color pixel P3 as the R, G, and M base color pixels respectively, the base color conversion mapping relationship is:

[0151] k1 = V1 - V3; k2 = V2; k3 = V3.

[0152] When one or more primary colors included in the emission color of the base color pixel, the stimulus value components of these primary colors in the maximum luminance stimulus value of the base color pixel are all the maximum values, and when the gamma value of the display device is 1, Y R = Y' R , Y G = Y' G , Y B = Y' B , after being converted into display image data corresponding to the display base color of the display device, the luminance stimulus value of the pixel unit PU remains unchanged, which can make the target luminance of the pixel unit PU unchanged, is beneficial to ensuring the readability of the display device, and reduces the power consumption of the display device.

[0153] In other optional embodiments, when the first base color pixel P1, the second base color pixel P2, and the third base color pixel P3 are the R, G, and C base color pixels respectively, the base color conversion mapping relationship can be:

[0154] k1 = V1; k2 = V2 - V3; k3 = V3;

[0155] When the first base color pixel P1, the second base color pixel P2, and the third base color pixel P3 are the R, G, and W base color pixels respectively, the base color conversion mapping relationship can be:

[0156] k1 = V1 - V3; k2 = V2 - V3; k3 = V3;

[0157] When the first base color pixel P1, the second base color pixel P2, and the third base color pixel P3 are the R, Y, and M base color pixels respectively, the base color conversion mapping relationship can be:

[0158] k1 = V1 - V2 - V3; k2 = V2; k3 = V3;

[0159] When the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 are R, Y, and C primary color pixels respectively, the primary color conversion mapping relationship can be:

[0160] k1 = V1 - V2 + V3; k2 = V2 - V3; k3 = V3;

[0161] When the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 are R, G, and C primary color pixels respectively, the primary color conversion mapping relationship can be:

[0162] k1 = V1; k2 = V2 - V3; k3 = V3;

[0163] When the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 are R, Y, and W primary color pixels respectively, the primary color conversion mapping relationship can be:

[0164] k1 = V1 - V2; k2 = V2 - V3; k3 = V3;

[0165] When the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 are R, G, and C primary color pixels respectively, the primary color conversion mapping relationship can be:

[0166] k1 = V1; k2 = V2 - V3; k3 = V3;

[0167] When the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 are Y, C, and M primary color pixels respectively, the primary color conversion mapping relationship can be:

[0168]

[0169] When the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 are W, Y, and M primary color pixels respectively, the primary color conversion mapping relationship can be:

[0170] k1 = V2 + V3 - V1; k2 = V1 - V3; k3 = V1 - V2.

[0171] Based on the same inventive concept, an embodiment of the present invention further provides an image conversion method for a display device. Figure 7 It is a schematic flowchart of an image conversion method for a display device provided by an embodiment of the present invention. Refer to Figure 7 , the image conversion method includes:

[0172] S110. Obtain the gray-scale values V1, V2, and V3 of the R, G, and B primary colors, and the primary color conversion mapping relationship.

[0173] S120. Determine the gray-scale values k1, k2, and k3 of the first primary-color pixel, the second primary-color pixel, and the third primary-color pixel in the same pixel unit according to the primary-color conversion mapping relationship.

[0174] Among them, in the same pixel unit PU, the gray-scale values V1, V2, and V3 of the R, G, and B primary colors are gray-scale input values, which can also be referred to as luminance input values or initial image data (the initial image data may include V1, V2, and V3, but is not limited to V1, V2, and V3), and V1, V2, and V3 are all greater than or equal to zero. The gray-scale values k1, k2, and k3 of the first primary-color pixel P1, the second primary-color pixel P2, and the third primary-color pixel P3 are gray-scale output values, which can also be referred to as luminance output values or display image data (the display image data may include k1, k2, and k3, but is not limited to k1, k2, and k3), and k1, k2, and k3 are also all greater than or equal to zero. In an optional embodiment, generally 255 gray scales are used, that is, the range of gray-scale values is from 0 gray scale to 255 gray scales.

[0175] Since most image processing systems and image processing standards adopt image data in RGB format, even if the display primary colors of the display device are not R, G, and B, the display controller of the display device will still receive the initial image data in RGB format, that is, the initial image data based on the R, G, and B primary colors. It is necessary to convert the initial image data into the display image data corresponding to the display primary colors of the display device so that the display device can display the correct image. Before and after the conversion, the gray-scale values V1, V2, and V3 of the R, G, and B primary colors and the gray-scale values k1, k2, and k3 of the first primary-color pixel P1, the second primary-color pixel P2, and the third primary-color pixel P3 satisfy the primary-color conversion mapping relationship.

[0176] Exemplarily, the image conversion device in the display device can receive the initial image data of each pixel unit PU, obtain the gray-scale values V1, V2, and V3 of the R, G, and B primary colors, and the three-dimensional coordinate points (x R , y R , z R ), (x G , y G , z G ), (x B , y B , z B ) of the R, G, and B primary colors in the CIE chromaticity diagram. From this, the three-dimensional coordinate point (x 0 , y 0 , z 0 ) of the target color of each pixel unit PU in the CIE chromaticity diagram and the luminance parameter can be determined; according to the pre-stored primary-color coordinates (x 1 , y 1 , z 1 ), (x 2, y 2 , z 2 ), (x 3 , y 3 , z 3 ), define the relational equation (x 0 , y 0 , z 0 ) = e1 × (x 1 , y 1 , z 1 ) + e2 × (x 2 , y 2 , z 2 ) + e3 × (x 3 , y 3 , z 3 ). The unique solutions of the relative luminances e1, e2, and e3 of the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 in each pixel unit PU can be determined. Combining with the luminance parameters, the gray scale values k1, k2, and k3 of the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 can be obtained. The unique solution of the above calculation formula is the primary color conversion mapping relationship. It should be noted that this embodiment only exemplarily illustrates a primary color conversion mapping relationship, but is not limited thereto. The primary color conversion mapping relationship can be set according to actual needs, and the present invention embodiment does not make specific limitations on the primary color conversion mapping relationship.

[0177] After the image conversion device determines the gray scale values k1, k2, and k3 of the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 in each pixel unit PU, the gray scale values k1, k2, and k3 of the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 in each pixel unit PU can be output to the display driving circuit. The display driving circuit can determine the driving signals D1, D2, and D3 of the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 in each pixel unit PU and the driving timing related to the driving signals according to the gray scale values k1, k2, and k3 of the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 in each pixel unit PU, and provide the driving signals D1, D2, and D3 to the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 in each pixel unit PU in the display area AA according to the driving timing, so that the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 in each pixel unit PU can be displayed.

[0178] The image conversion method of the display device provided by the embodiment of the present invention can determine the gray scale values k1, k2, and k3 of the first primary color pixel, the second primary color pixel, and the third primary color pixel according to the gray scale values V1, V2, and V3 of the R, G, and B primary colors and the primary color conversion mapping relationship. The display device can be compatible with most image processing systems and image processing standards. When setting the primary color pixels in the pixel unit to non-conventional R, G, and B pixels, it can also receive RGB format image data and display the correct image according to the RGB format image data. In addition, when the emission color of at least one primary color pixel in the pixel unit includes two or three of the three primary colors R, G, and B, it is beneficial to reduce the primary color purity in the primary color and increase the proportion of each color in the primary color, so as to achieve the purpose of increasing the luminous flux, which is beneficial to increasing the readability of the display device and reducing the power consumption of the display device.

[0179] Optionally, the primary color conversion mapping relationship can be: in the same pixel unit PU, when the gray scale values of the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 are k1, k2, and k3 respectively, the sum of the luminance stimulus values of the R primary color in the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 R is equal to the luminance stimulus value Y when the gray scale value of the R primary color is V1 R , the sum of the luminance stimulus values of the G primary color G is equal to the luminance stimulus value Y when the gray scale value of the G primary color is V2 G , and the sum of the luminance stimulus values of the B primary color B is equal to the luminance stimulus value Y when the gray scale value of the B primary color is V3 B .

[0180] Among them, the luminance stimulus value refers to the degree of stimulation produced by light on the human eye. Generally, the luminance stimulus value refers to the normalized luminance weight. The luminance stimulus value multiplied by the luminance parameter is equal to the actual luminance value, and the maximum luminance stimulus value multiplied by the luminance parameter is equal to the maximum display luminance that the display device can actually achieve. In the same pixel unit PU, the maximum luminance stimulus value Y of the R primary color Rmax , the maximum luminance stimulus value Y of the G primary color Gmax , and the maximum luminance stimulus value Y of the B primary color Bmax sum to 1 generally, that is, in the same pixel unit PU, when the R primary color, the G primary color, and the B primary color are all at the maximum luminance, white light with a luminance stimulus value of 1 can be obtained by mixing.

[0181] Luminance stimulus value Among them, S(λ) is the spectral power distribution, that is, the radiation intensity of light at a wavelength of λ, It is a color matching function that reflects the wavelength sensitivity of the human eye to brightness (green). Due to the additivity of the spectrum, the additivity of the brightness stimulus values is determined, and the brightness stimulus value of the pixel unit PU is equal to the sum of the brightness stimulus values of the primary color pixels in the pixel unit.

[0182] Specifically, the brightness stimulus value Y of the pixel unit PU included in the initial image data in the RGB format before conversion is Y R +Y G +Y B , and the brightness stimulus value Y' of the pixel unit PU included in the display image data corresponding to the display primary colors of the display device after conversion is Y 1 +Y 2 +Y 3 =Y' R +Y' G +Y' B =Y R +Y G +Y B =Y. After converting the initial image data in the RGB format into the display image data corresponding to the display primary colors of the display device, the brightness stimulus values of each pixel unit PU remain unchanged, making the display brightness of each pixel unit PU unchanged, which is beneficial to ensuring the readability of the display device and reducing the power consumption of the display device; at the same time, Y R =Y' R , Y G =Y' G , Y B =Y' B can make the gray scale values k1, k2, and k3 of the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 in the same pixel unit PU have a unique solution, and can also make the brightness stimulus values of the R, G, and B primary colors in the pixel unit PU unchanged, which is beneficial to reducing color deviation.

[0183] In an optional embodiment, Figure 8 is a schematic flowchart of another image conversion method for a display device provided by an embodiment of the present invention. Referring to Figure 8 , the image conversion method includes:

[0184] S210. Obtain the gray scale values V1, V2, and V3 of the R, G, and B primary colors, and the primary color conversion mapping relationship.

[0185] S220. Obtain the maximum brightness stimulus values Y Rmax , Y Gmax , Y Bmax of the R, G, and B primary colors, and the maximum brightness stimulus values Y 1max , Y 2max , Y 3max .

[0186] S230. Calculate the luminance stimulus value Y when the grayscale values of the primary colors R, G, and B are V1, V2, and V3 according to V1, V2, V3, and Y Rmax , Y Gmax , Y Bmax , calculate the luminance stimulus value Y when the grayscale values of the primary colors R, G, and B are V1, V2, and V3 R , Y G , Y B .

[0187] S240. Calculate the grayscale values k1, k2, and k3 of the first primary color pixel, the second primary color pixel, and the third primary color pixel in the same pixel unit according to Y R , Y G , Y B , and Y 1max , Y 2max , Y 3max .

[0188] Among them, the maximum luminance stimulus value Y of the first primary color pixel P1 1max = Y 1-Rmax + Y 1-Gmax + Y 1-Bmax , Y 1-Rmax , Y 1-Gmax , Y 1-Bmax are respectively the R primary color stimulus value component, the G primary color stimulus value component, and the B primary color stimulus value component in the maximum luminance stimulus value Y 1max of the first primary color pixel P1, 0 < Y 1-Rmax ≤ Y Rmax , 0 ≤ Y 1-Gmax ≤ Y Gmax , 0 ≤ Y 1-Bmax ≤ Y Bmax ; the maximum luminance stimulus value Y of the second primary color pixel P2 2max = Y 2-Rmax + Y 2-Gmax + Y 2-Bmax , Y 2-Rmax , Y 2-Gmax , Y 2-Bmax are respectively the R primary color stimulus value component, the G primary color stimulus value component, and the B primary color stimulus value component in the maximum luminance stimulus value Y 2max of the second primary color pixel P2, 0 ≤ Y 2-Rmax ≤ Y Rmax , 0 < Y 2-Gmax ≤ Y Gmax , 0 ≤ Y 2-Bmax ≤ Y Bmax ; the maximum luminance stimulus value Y of the third primary color pixel P3 3max = Y 3-Rmax + Y 3-Gmax + Y 3-Bmax , Y 3-Rmax , Y3-Gmax , Y 3-Bmax are respectively the R primary color stimulus value component, G primary color stimulus value component, and B primary color stimulus value component in the maximum luminance stimulus value Y of the third primary color pixel P3, where 0 ≤ Y 3max ≤ Y 3-Rmax ≤ Y Rmax , 0 ≤ Y 3-Gmax ≤ Y Gmax , 0 < Y 3-Bmax ≤ Y Bmax .

[0189] Specifically, when the gray scale values of the R, G, and B primary colors are V1, V2, and V3 respectively, the luminance stimulus values are respectively:

[0190]

[0191] In the same pixel unit PU, when the gray scale values of the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 are k1, k2, and k3 respectively, the sum of the luminance stimulus values of the R primary color, the sum of the luminance stimulus values of the G primary color, and the sum of the luminance stimulus values of the B primary color in the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 are respectively:

[0192]

[0193] From Y R = Y′ R , Y G = Y′ G , Y B = Y′ B the unique solution related to k1, k2, k3 and V1, V2, V3 can be obtained, which is the primary color conversion mapping relationship.

[0194] Based on the above embodiments, according to Y R , Y G , Y B , and Y 1max , Y 2max , Y 3max , calculate the gray scale values k1, k2, k3 of the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 in the same pixel unit, including: assuming that the gray scale values of the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 are k1, k2, k3 respectively, calculate the luminance stimulus values of the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 as Y 1max , Y 2max , Y 3max according to k1, k2, k3 and Y 1 , Y 2 , Y3 ; Calculate the sum Y' of the luminance stimulus values of the R primary color in the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 in the same pixel unit PU according to Y 1 , Y 2 , Y 3 ; Calculate the sum Y' of the luminance stimulus values of the G primary color, and R the sum Y' of the luminance stimulus values of the B primary color G ; By making Y B = Y' R , Y R = Y' G , Y G = Y' B , calculate the gray scale values k1, k2, and k3 of the first primary color pixel, the second primary color pixel, and the third primary color pixel in the same pixel unit. B

[0195] Among them, the luminance stimulus value of the first primary color pixel P1 is Y 1 ,

[0196]

[0197] The luminance stimulus value of the second primary color pixel P2 is Y 2 ,

[0198]

[0199] The luminance stimulus value of the third primary color pixel P3 is Y 3 ,

[0200]

[0201] Exemplarily, taking the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 as R, G, and M primary color pixels respectively, and the maximum gray scale as 255 as an example,

[0202]

[0203]

[0204] From Y R = Y' R , Y G = Y' G , Y B = Y' B it can be obtained that:

[0205]

[0206] The unique solutions of k1, k2, and k3 related to V1, V2, and V3 can be obtained from the above formula, which is the mapping relationship of the primary color conversion.

[0207] In another alternative embodiment, the maximum luminance stimulus values Y of the first primary color pixel, the second primary color pixel, and the third primary color pixel are obtained. 1max 、Y 2max 、Y 3max ,including:

[0208] Y 1max =Y 1-Rmax +Y 1-Gmax +Y 1-Bmax ,0<Y 1-Rmax ≤Y Rmax ,0≤Y 1-Gmax ≤Y Gmax ,

[0209] 0≤Y 1-Bmax ≤Y Bmax ;

[0210] Y 2max =Y 2-Rmax +Y 2-Gmax +Y 2-Bmax ,0≤Y 2-Rmax ≤Y Rmax ,0<Y 2-Gmax ≤Y Gmax ,

[0211] 0≤Y 2-Bmax ≤Y Bmax ;

[0212] Y 3max =Y 3-Rmax +Y 3-Gmax +Y 3-Bmax ,0≤Y 3-Rmax ≤Y Rmax ,0≤Y 3-Gmax ≤Y Gmax ,

[0213] 0<Y 3-Bmax ≤Y Bmax ;

[0214] In the formula, Y 1-Rmax 、Y 1-Gmax 、Y 1-Bmax are respectively the R primary color stimulus value component, the G primary color stimulus value component, and the B primary color stimulus value component in the maximum luminance stimulus value Y 1max of the first primary color pixel; Y 2-Rmax 、Y 2-Gmax 、Y 2-Bmax are respectively the maximum luminance stimulus value Y 2maxThe R primary color stimulus value component, G primary color stimulus value component, and B primary color stimulus value component in; Y 3-Rmax , Y 3-Gmax , Y 3-Bmax are respectively the maximum luminance stimulus value Y 3max of the third primary color pixel, the R primary color stimulus value component, G primary color stimulus value component, and B primary color stimulus value component in;

[0215] Among them, Y 1max + Y 2max + Y 3max = 1.

[0216] Specifically, Y 1max + Y 2max + Y 3max = (Y 1-Rmax + Y 1-Gmax + Y 1-Bmax ) + (Y 2-Rmax + Y 2-Gmax + Y 2-Bmax ) + (Y 3-Rmax + Y 3-Gmax + Y 3-Bmax ) = 1. In the same pixel unit PU, when the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 are all at the maximum luminance, white light with a luminance stimulus value of 1 can be obtained by mixing. Thus, when implementing a white screen, it is only necessary to make k1 = k2 = k3 directly, the control is relatively simple, it is easier to restore white, and at the same time, it is beneficial to present more accurate colors and improve the visual effect.

[0217] Exemplarily, taking the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 as R, G, and M primary color pixels respectively, and the maximum gray level being 255 as an example, the emission color of the first primary color pixel P1 (R primary color pixel) includes the R primary color, the emission color of the second primary color pixel P2 (G primary color pixel) includes the G primary color, and the emission color of the second primary color pixel P2 (M primary color pixel) includes the R primary color and the B primary color. In the maximum luminance stimulus value Y 1max of the first primary color pixel P1, Y 1-Gmax = 0, Y 1-Bmax = 0, Y 1max = Y 1-Rmax ; in the maximum luminance stimulus value Y 2max of the second primary color pixel P2, Y 2-Rmax = 0, Y 2-Bmax = 0, Y 2max = Y 2-Gmax ; in the maximum luminance stimulus value Y 3max of the third primary color pixel P3, Y 3-Gmax = 0, Y 3max = Y 3-Rmax + Y 3-Bmax; Y 1max +Y 2max +Y 3max = Y 1-Rmax +Y 2-Gmax +Y 3-Rmax +Y 3-Bmax 。

[0218] From Y Rmax +Y Gmax +Y Bmax = 1, it can be made such that:

[0219] Y 1-Rmax +Y 3-Rmax = Y Rmax ,

[0220] Y 2-Gmax = Y Gmax ,

[0221] Y 3-Bmax = Y Bmax ,

[0222] Get:

[0223] Y 1max = Y 1-Rmax = Y Rmax -Y ΔR ;

[0224] Y 2max = Y 2-Gmax = Y Gmax ;

[0225] Y 3max = Y 3-Rmax +Y 3-Bmax = Y Bmax +Y ΔR ;

[0226] Combined with Y R = Y' R , Y G = Y' G , Y B = Y' B It can be obtained:

[0227]

[0228] From the above formula, the unique solutions of k1, k2, k3 related to V1, V2, V3 can be obtained:

[0229]

[0230] k2 = V2;

[0231] k3 = V3.

[0232] Optionally, according to the base color conversion mapping relationship, determining the gray scale values k1, k2, and k3 of the first base color pixel, the second base color pixel, and the third base color pixel in the same pixel unit includes:

[0233] Calculating the gray scale values k1, k2, and k3 of the first base color pixel, the second base color pixel, and the third base color pixel by making the sum of the gray scale values of the base color pixels whose emission color includes the R primary color equal to V1, the sum of the gray scale values of the base color pixels whose emission color includes the G primary color equal to V2, and the sum of the gray scale values of the base color pixels whose emission color includes the B primary color equal to V3.

[0234] Exemplarily, taking the first base color pixel P1, the second base color pixel P2, and the third base color pixel P3 as the R, G, and M base color pixels respectively, the base color conversion mapping relationship is:

[0235] k1 = V1 - V3; k2 = V2; k3 = V3.

[0236] When one or more primary colors included in the emission color of the base color pixel, the primary color stimulus value components in the maximum luminance stimulus value of the base color pixel are all the maximum values, and the gamma value of the display device is 1, Y R = Y' R , Y G = Y' G , Y B = Y' B , after being converted into display image data corresponding to the display base color of the display device, the luminance stimulus value of the pixel unit PU remains unchanged, which can make the target luminance of the pixel unit PU unchanged, is beneficial to ensuring the readability of the display device, and reduces the power consumption of the display device.

[0237] In other alternative embodiments, when the first base color pixel P1, the second base color pixel P2, and the third base color pixel P3 are the R, G, and C base color pixels respectively, the base color conversion mapping relationship can be:

[0238] k1 = V1; k2 = V2 - V3; k3 = V3;

[0239] When the first base color pixel P1, the second base color pixel P2, and the third base color pixel P3 are the R, G, and W base color pixels respectively, the base color conversion mapping relationship can be:

[0240] k1 = V1 - V3; k2 = V2 - V3; k3 = V3;

[0241] When the first base color pixel P1, the second base color pixel P2, and the third base color pixel P3 are the R, Y, and M base color pixels respectively, the base color conversion mapping relationship can be:

[0242] k1 = V1 - V2 - V3; k2 = V2; k3 = V3;

[0243] When the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 are R, Y, and C primary color pixels respectively, the primary color conversion mapping relationship can be:

[0244] k1 = V1 - V2 + V3; k2 = V2 - V3; k3 = V3;

[0245] When the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 are R, G, and C primary color pixels respectively, the primary color conversion mapping relationship can be:

[0246] k1 = V1; k2 = V2 - V3; k3 = V3;

[0247] When the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 are R, Y, and W primary color pixels respectively, the primary color conversion mapping relationship can be:

[0248] k1 = V1 - V2; k2 = V2 - V3; k3 = V3;

[0249] When the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 are R, G, and C primary color pixels respectively, the primary color conversion mapping relationship can be:

[0250] k1 = V1; k2 = V2 - V3; k3 = V3;

[0251] When the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 are Y, C, and M primary color pixels respectively, the primary color conversion mapping relationship can be:

[0252]

[0253] When the first primary color pixel P1, the second primary color pixel P2, and the third primary color pixel P3 are W, Y, and M primary color pixels respectively, the primary color conversion mapping relationship can be:

[0254] k1 = V2 + V3 - V1; k2 = V1 - V3; k3 = V1 - V2.

[0255] The image conversion method of the display device provided by the embodiments of the present invention can be applied to the display device provided by any embodiment of the present invention, and has the corresponding technical features and beneficial effects of the display device. For the content not described in detail in the embodiments of the image conversion method of the display device, reference can be made to the description of the display device above, and details are not repeated here; similarly, the display panel provided by the embodiments of the present invention also has functional modules and beneficial effects capable of executing the image conversion method of the display device provided by the embodiments of the present invention. For the content not described in detail in the embodiments of the display device, reference can be made to the description of the image conversion method of the display device above, and details are not repeated here.

[0256] Note that the above is only the preferred embodiment of the present invention and the applied technical principle. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described here, and various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display device, characterized in that: include: A plurality of pixel units; The pixel unit includes three primary color pixels, the luminous color of the first primary color pixel includes at least the R primary color, the luminous color of the second primary color pixel includes at least the G primary color, and the luminous color of the third primary color pixel includes at least the B primary color; the luminous color of at least one of the primary color pixels includes two or three of the three primary colors of R, G, and B; In the same pixel unit, the grayscale values ​​of the R, G, and B primary colors are V1, V2, and V3 respectively, and the grayscale values ​​of the first primary color pixel, the second primary color pixel, and the third primary color pixel are k1, k2, and k3 respectively; Among them, in the same pixel unit, the grayscale values ​​V1, V2, V3 of the R, G, B primary colors and the grayscale values ​​k1, k2, k3 of the first primary color pixel, the second primary color pixel, and the third primary color pixel satisfy the primary color conversion mapping relationship.

2. The display device according to claim 1, characterized in that In the same pixel unit, when the grayscale values ​​of the R, G, and B primary colors are V1, V2, and V3 respectively, the brightness stimulation value of the R primary color is the first R primary color stimulation value Y R , the brightness stimulus value of the G primary color is the first G primary color stimulus value Y G , the brightness stimulus value of the B primary color is the first B primary color stimulus value Y B ; When the grayscale values ​​of the first primary color pixel, the second primary color pixel, and the third primary color pixel are k1, k2, and k3 respectively, the sum of the brightness stimulus values ​​of the R primary color in the first primary color pixel, the second primary color pixel, and the third primary color pixel is the second R primary color stimulus value Y′ R , the sum of the brightness stimulus values ​​of the G primary colors is the second G primary color stimulus value Y′ G , the sum of the brightness stimulus values ​​of the B primary colors is the second B primary color stimulus value Y′ B ; The base color conversion mapping relationship is: R =Y′ R , Y G =Y′ G , Y B =Y′ B .

3. The display device according to claim 2, characterized in that Where Y 1-Rmax , Y 1-Gmax , Y 1-Bmax are the maximum brightness stimulus values ​​Y of the first primary color pixels respectively. 1max The R primary color stimulus value component, the G primary color stimulus value component, the B primary color stimulus value component, 0<Y 1-Rmax ≤Y Rmax , 0≤Y 1-Gmax ≤Y Gmax , 0≤Y 1-Bmax ≤Y Bmax ; Y 2-Rmax , Y 2-Gmax , Y 2-Bmax are the maximum brightness stimulus values ​​Y of the second primary color pixels respectively. 2max The R primary color stimulus value component, the G primary color stimulus value component, the B primary color stimulus value component, 0≤Y 2-Rmax ≤Y Rmax ,0< Y 2-Gmax ≤Y Gmax , 0≤Y 2-Bmax ≤Y Bmax ; Y 3-Rmax , Y 3-Gmax , Y 3-Bmax are the maximum brightness stimulus value Y of the third primary color pixel respectively 3max The R primary color stimulus value component, the G primary color stimulus value component, the B primary color stimulus value component, 0≤Y 3-Rmax ≤Y Rmax , 0≤Y 3-Gmax ≤Y Gmax , 0<Y 3-Bmax ≤Y Bmax .

4. The display device according to claim 3, characterized in that AND 1max +Y 2max +Y 3max =1。 5. The display device according to claim 3, characterized in that The maximum brightness stimulus values ​​of the R, G, and B primary colors are Y Rmax , Y Gmax , Y Bmax ; AND 1-Rmax =And Rmax ,AND 2-Gmax =And Gmax And, and 3-Bmax =And Bmax 。 6. The display device according to claim 5, characterized in that The maximum brightness stimulus value Y of the first primary color 1max Middle, Y 1-Gmax =0 or Y Gmax , Y 1-Bmax = 0 or Y Bmax ; The maximum brightness stimulus value Y of the second primary color 2max Middle, Y 2-Rmax =0 or Y Rmax , Y 2-Bmax = 0 or Y Bmax ; The maximum brightness stimulus value Y of the third primary color 3max Middle, Y 3-Rmax =0 or Y Rmax , Y 3-Bmax =0 or Y Gmax .

7. The display device according to claim 3, characterized in that The gamma value of the display device is 1.

8. The display device according to claim 1, characterized in that The primary color conversion mapping relationship is: in the same pixel unit, the sum of the grayscale values ​​of the primary color pixels whose luminous colors include the R primary color is equal to V1, the sum of the grayscale values ​​of the primary color pixels whose luminous colors include the G primary color is equal to V2, and the sum of the grayscale values ​​of the primary color pixels whose luminous colors include the B primary color is equal to V3.

9. The display device according to claim 1, characterized in that The display device is a reflective display device, a transmissive display device or a semi-transmissive and semi-reflective display device.

10. The display device according to claim 1, characterized in that The pixel unit includes at least three micro chambers; each of the micro chambers includes at least one color particle, and one of the micro chambers can present at least one primary color; The pixel unit can present the three primary colors simultaneously.

11. The display device according to claim 1, characterized in that The pixel unit includes one or more micro chambers; each of the micro chambers includes at least three color particles, and one micro chamber can present at least three primary colors.

12. An image conversion method for a display device, characterized in that: The display device comprises a plurality of pixel units; the pixel units comprise three primary color pixels, the luminous color of the first primary color pixel comprises at least the R primary color, the luminous color of the second primary color pixel comprises at least the G primary color, and the luminous color of the third primary color pixel comprises at least the B primary color; the luminous color of at least one of the primary color pixels comprises two or three primary colors among the R, G, and B primary colors; The image conversion method comprises: Get the grayscale values ​​V1, V2, V3 of the R, G, B primary colors, and the primary color conversion mapping relationship; According to the primary color conversion mapping relationship, the grayscale values ​​k1, k2, k3 of the first primary color pixel, the second primary color pixel, and the third primary color pixel in the same pixel unit are determined.

13. The image conversion method of a display device according to claim 12, characterized in that: The primary color conversion mapping relationship is: in the same pixel unit, when the grayscale values ​​of the first primary color pixel, the second primary color pixel, and the third primary color pixel are k1, k2, and k3 respectively, the sum of the brightness stimulation values ​​of the R primary color in the first primary color pixel, the second primary color pixel, and the third primary color pixel is equal to the brightness stimulation value when the grayscale value of the R primary color is V1, the sum of the brightness stimulation values ​​of the G primary color is equal to the brightness stimulation value when the grayscale value of the G primary color is V2, and the sum of the brightness stimulation values ​​of the B primary color is equal to the brightness stimulation value when the grayscale value of the B primary color is V3.

14. The image conversion method of a display device according to claim 13, characterized in that: Determining the grayscale values ​​k1, k2, k3 of the first primary color pixel, the second primary color pixel, and the third primary color pixel in the same pixel unit according to the primary color conversion mapping relationship includes: Get the maximum brightness stimulus value Y of the R, G, and B primary colors Rmax , Y Gmax , Y Bmax , and the maximum brightness stimulus value Y of the first primary color pixel, the second primary color pixel, and the third primary color pixel 1max , Y 2max , Y 3max ; According to V1, V2, V3 and Y Rmax , Y Gmax , Y Bmax , calculate the brightness stimulus value Y of the R, G, B primary colors when the grayscale values ​​of the R, G, B primary colors are V1, V2, V3 R , Y G , Y B ; According to Y R , Y G , Y B , and Y 1max , Y 2max , Y 3max , calculate the grayscale values ​​k1, k2, k3 of the first primary color pixel, the second primary color pixel, and the third primary color pixel in the same pixel unit.

15. The image conversion method of a display device according to claim 14, characterized in that: According to Y R , Y G , Y B , and Y 1max , Y 2max , Y 3max , calculating the grayscale values ​​k1, k2, k3 of the first primary color pixel, the second primary color pixel, and the third primary color pixel in the same pixel unit, comprising: Assume that the grayscale values ​​of the first primary color pixel, the second primary color pixel, and the third primary color pixel are k1, k2, and k3 respectively. 1max , Y 2max , Y 3max Calculate the brightness stimulus values ​​of the first primary color pixel, the second primary color pixel, and the third primary color pixel, Y1, Y2, and Y3; According to Y1, Y2, and Y3, the sum Y′ of the brightness stimulus values ​​of the R primary color in the first primary color pixel, the second primary color pixel, and the third primary color pixel in the same pixel unit is calculated. R , the sum of the brightness stimulus values ​​of the G primary colors Y′ G , and the sum of the brightness stimulus values ​​of the B primary colors Y′ B ; By making Y R =Y′ R , Y G =Y′ G , Y B =Y′ B , calculate the grayscale values ​​k1, k2, k3 of the first primary color pixel, the second primary color pixel, and the third primary color pixel in the same pixel unit.

16. The image conversion method of a display device according to claim 14, characterized in that: Get the maximum brightness stimulus value Y of the first primary color pixel, the second primary color pixel, and the third primary color pixel 1max , Y 2max , Y 3max , include: AND 1max =And 1-Rmax +Y 1-Gmax +Y 1-Bmax ,0<Y 1-Rmax ≤And Rmax ,0≤Y 1-Gmax ≤And Gmax ,0≤Y 1-Bmax ≤And Bmax ; AND 2max =And 2-Rmax +Y 2-Gmax +Y 2-Bmax ,0≤Y 2-Rmax ≤And Rmax ,0<Y 2-Gmax ≤And Gmax ,0≤Y 2-Bmax ≤And Bmax ; AND 3max =And 3-Rmax +Y 3-Gmax +Y 3-Bmax ,0≤Y 3-Rmax ≤And Rmax ,0≤Y 3-Gmax ≤And Gmax ,0<Y 3-Bmax ≤And Bmax ; Where Y 1-Rmax , Y 1-Gmax , Y 1-Bmax are the maximum brightness stimulus values ​​Y of the first primary color pixels respectively. 1max The R primary color stimulus value component, the G primary color stimulus value component, and the B primary color stimulus value component; 2-Rmax , Y 2-Gmax , Y 2-Bmax are the maximum brightness stimulus values ​​Y of the second primary color pixels respectively. 2max The R primary color stimulus value component, the G primary color stimulus value component, and the B primary color stimulus value component; 3-Rmax , Y 3-Gmax , Y 3-Bmax are the maximum brightness stimulus value Y of the third primary color pixel respectively 3max The R primary color stimulus value component, the G primary color stimulus value component, and the B primary color stimulus value component; Among them, Y 1max +Y 2max +Y 3max = 1 17. The image conversion method of a display device according to claim 12, characterized in that: Determining the grayscale values ​​k1, k2, k3 of the first primary color pixel, the second primary color pixel, and the third primary color pixel in the same pixel unit according to the primary color conversion mapping relationship includes: By making the sum of the grayscale values ​​of the primary color pixels whose luminescent colors include the R primary color equal to V1, the sum of the grayscale values ​​of the primary color pixels whose luminescent colors include the G primary color equal to V2, and the sum of the grayscale values ​​of the primary color pixels whose luminescent colors include the B primary color equal to V3, the grayscale values ​​k1, k2, and k3 of the first primary color pixel, the second primary color pixel, and the third primary color pixel are calculated.

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