Display device and driving method therefor

Abstract

The present application provides a display device and a driving method therefor. The display device comprises: a first black-and-white screen, which, in a first sub-frame, is driven by a first sub-display signal and displays a first sub-image in coordination with a first sub-beam, and, in a second sub-frame, is driven by a second sub-display signal and displays a second sub-image in coordination with a second sub-beam; a second black-and-white screen, which, in the present frame (comprising the first and second sub-frames), is driven by a second display signal and displays a second image in coordination with a second beam; a first light source for projecting a first beam (comprising the first and second sub-beams); and a second light source for projecting the second beam, wherein a first image (comprising the first and second sub-images) and the second image jointly present a target image.

Description

Display device and driving method thereof Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display device and a driving method thereof. Background Art

[0002] The basic principle of an LCD (Liquid Crystal Display) projector is to use liquid crystal modules to modulate the color of light emitted by a light source and projected onto a screen. Depending on the number of LCD panels (including at least the corresponding LCD modules) used, LCD projectors can be categorized as either single-chip or three-chip. In a single-chip projector, a white light source projects through the LCD panels, ultimately projecting the displayed content onto a carrier (such as a screen). In a three-chip projector, three colors of light are projected separately through three corresponding LCD panels without color filters. The light is then refracted and projected onto a carrier (such as a screen).

[0003] Among them, the disadvantage of a single-chip LCD projector is that the brightness of the displayed image is low under the same light source conditions, and the disadvantage of a three-chip LCD projector is that the device is larger in size due to the large number of liquid crystal panels.

[0004] Therefore, existing single-chip and three-chip LCD projectors have the above problems respectively and are in urgent need of improvement. SUMMARY OF THE INVENTION

[0005] The embodiments of the present application provide a display device and a driving method thereof to improve the technical problem that the existing single-chip LCD projector has low brightness of the display image under the same light source conditions, and the defect of the three-chip LCD projector is that the large number of liquid crystal panels makes the device larger in size.

[0006] An embodiment of the present application provides a display device, including:

[0007] Display carrier;

[0008] A first black and white screen, used for receiving a first display signal;

[0009] A second black and white screen, used for receiving a second display signal;

[0010] a first light source, configured to project a first light beam through the first black-and-white screen and to display a first image on the display carrier in conjunction with the first display signal;

[0011] a second light source, configured to project a second light beam through the second black-and-white screen and to display a second image on the display carrier in conjunction with the second display signal, wherein the first image and the second image are combined on the display carrier to form a target image;

[0012] The first display signal includes a first sub-display signal and a second sub-display signal, and the first light includes a first sub-light and a second sub-light of different colors;

[0013] The second light includes a third sub-light, and the color of the third sub-light is different from any one of the colors of the first sub-light and the second sub-light;

[0014] Wherein, one frame includes a first subframe and a second subframe, and the first black and white screen is used to receive the first sub-display signal in the first subframe and receive the second sub-display signal in the second subframe;

[0015] In which, the first light source is used to project the first sub-light through the first black and white screen in the first sub-frame, and cooperate with the first sub-display signal to display the first sub-picture on the display carrier, and is also used to project the second sub-light through the second black and white screen in the second sub-frame, and cooperate with the second sub-display signal to display the second sub-picture on the display carrier, and the first picture includes the first sub-picture and the second sub-picture. Beneficial effects

[0016] The present application provides a display device and a driving method thereof, wherein a first black-and-white screen is provided for presenting a first deflection angle according to a first display signal and a second black-and-white screen is provided for presenting a second deflection angle according to a second display signal. A frame includes a first sub-frame and a second sub-frame. The first black-and-white screen presents the first sub-deflection angle according to the first sub-display signal in the first sub-frame, and cooperates with a first sub-light source to project a first sub-light through the first black-and-white screen in the first sub-frame to display a first sub-picture on the display carrier. The first black-and-white screen presents the second sub-deflection angle according to the second sub-display signal in the second sub-frame, and cooperates with a second sub-light source to project a second sub-light through the first black-and-white screen in the second sub-frame to display a second sub-picture on the display carrier. The second light source is used to project a third sub-light (different in color from the first sub-light and the second sub-light) through the second black-and-white screen to display a second picture on the display carrier. The first sub-picture, the second sub-picture, and the second picture together constitute a target picture of a frame, so as to take into account both the small size and high brightness of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present application is further described below with reference to the accompanying drawings. It should be noted that the drawings described below are only used to illustrate some embodiments of the present application, and those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0018] FIG1 is a structural block diagram of a display device provided in an embodiment of the present application.

[0019] FIG2 and FIG3 are schematic diagrams of time period division within a frame provided in an embodiment of the present application.

[0020] FIG4 is a schematic diagram of pixel arrangement of the first black and white screen and the second black and white screen provided in an embodiment of the present application.

[0021] 5 to 8 are structural block diagrams of the display device provided in embodiments of the present application.

[0022] FIG9 is a schematic diagram showing the specific contents of the first sub-display signal and the second sub-display signal in the first black-and-white screen provided by an embodiment of the present application.

[0023] FIG10 is a schematic diagram showing the connection of multiple source lines in a display device according to an embodiment of the present application.

[0024] 11 and 12 are waveform diagrams of some signals provided in the embodiments of the present application.

[0025] FIG13 is a schematic diagram showing the connection of multiple source lines in a display device according to an embodiment of the present application.

[0026] FIG14 is a waveform diagram of some signals provided in an embodiment of the present application.

[0027] 15 and 16 are schematic diagrams showing the specific contents of the first sub-display signal and the second sub-display signal in the first black-and-white screen provided in an embodiment of the present application.

[0028] FIG17 is a waveform diagram of some signals provided in an embodiment of the present application.

[0029] FIG18 is a flowchart of a method for driving a display device according to an embodiment of the present application. Modes for Carrying Out the Invention

[0030] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0031] The embodiments of the present application provide a display device, which may include but is not limited to the following embodiments and combinations of the following embodiments.

[0032] In some embodiments, as shown in Figure 1, the display device 100 includes: a display carrier 10; a first black and white screen 201, used to present a first deflection angle according to a first display signal; a second black and white screen 202, used to present a second deflection angle according to a second display signal; a first light source 301, used to project a first light through the first black and white screen 201 to display a first picture on the display carrier 10; a second light source 302, used to project a second light through the second black and white screen 202 to display a second picture on the display carrier 10, and the first picture and the second picture are combined on the display carrier to present a target picture.

[0033] Specifically, the display carrier 10 can be, but is not limited to, a carrier such as a screen that receives and reflects light to present an image. Since the first light source 301 and the second light source 302 can provide first and second light of different colors to the first black-and-white screen 201 and the second black-and-white screen 202, respectively, the two black-and-white screens do not need color filters. However, both black-and-white screens need to include corresponding drive units and liquid crystal modules. Each drive unit can control the liquid crystal molecules in the corresponding liquid crystal module to deflect by a corresponding angle (collectively referred to as the first deflection angle or the second deflection angle) based on the acquired display signal (the first display signal or the second display signal) to present a corresponding light transmittance. This allows light of the corresponding color (the first light or the second light) to pass through at the corresponding light transmittance, thereby presenting an image of the corresponding color (the first image or the second image) on the display carrier 10. The display carrier 10 actually displays the first and second images of different colors, but what the human eye sees is a superposition of the first and second images.

[0034] Among them, the above-mentioned black and white screen may include a first substrate and a second substrate arranged relatively to each other, a driving layer (including multiple pixel circuits and multiple pixel electrodes) may be provided on the side of the first substrate close to the second substrate, and a common electrode layer may be provided on the side of the second substrate close to the first substrate, and a liquid crystal layer is provided between the driving layer and the common electrode layer. Each pixel circuit makes the corresponding pixel electrode have a corresponding pixel voltage according to the received data voltage, and the common electrode layer can be loaded with a common voltage. The liquid crystal molecules corresponding to each pixel electrode position in the liquid crystal layer can be deflected by a corresponding angle according to the corresponding pixel voltage and the common electrode voltage so that a corresponding amount of monochromatic light is transmitted, so as to present a picture of the color with corresponding brightness on the display carrier 10.

[0035] As shown in Figures 1 to 3 , the first display signal includes a first sub-display signal and a second sub-display signal, the first light includes a first sub-light and a second sub-light of different colors, and the first deflection angle includes a first sub-deflection angle and a second sub-deflection angle. The second light includes a third sub-light, and the color of the third sub-light is different from either the color of the first sub-light or the color of the second sub-light. That is, the color of at least one sub-light in the first light is different from the color of at least one sub-light in the second light.

[0036] In which, a frame f includes a first sub-frame f1 and a second sub-frame f2; the first black and white screen 201 is used to present the first sub-deflection angle according to the first sub-display signal in the first sub-frame f1, and is used to present the second sub-deflection angle according to the second sub-display signal in the second sub-frame f2; the first light source 301 is used to project the first sub-light through the first black and white screen 201 in the first sub-frame f1 to display the first sub-picture on the display carrier 10, and is used to project the second sub-light through the second black and white screen 202 in the second sub-frame f2 to display the second sub-picture on the display carrier 10; wherein, the first picture includes the first sub-picture and the second sub-picture.

[0037] It can be understood that in this embodiment, by providing two black and white screens, each of which cooperates with a light source of a respective color to present a picture of a corresponding color, it is possible to avoid the problem of too low brightness of the target picture caused by providing only one white light source. At the same time, the first light projected onto the first black and white screen 201 includes a first sub-light and a second sub-light of different colors, and the first display signal acting on the first black and white screen 201 includes a first sub-display signal corresponding to the first sub-light and a second sub-display signal corresponding to the second sub-light, so that the first sub-frame f1 and the second sub-frame f2 of the first black and white screen 201 in a frame f can respectively cooperate with the first sub-light and the second sub-light to project sequentially onto the display carrier 10. The first sub-picture and the second sub-picture corresponding to different colors are displayed. Since the first black-and-white screen 201 can present the first sub-picture and the second sub-picture in sequence, the setting of one black-and-white screen can be reduced to reduce the volume of the display device 20; at the same time, the second black-and-white screen 202 can be acted upon by the second display signal and cooperated with the second light including the third sub-light (the color of which is different from the color of the first sub-light and the color of the second sub-light) to present the second picture on the display carrier 10. What the human eye sees in one frame is a color target picture that is a superposition of the first picture (including the first sub-picture and the second sub-picture presented in sequence) and the second picture.

[0038] It should be noted that the second light may also include a fourth sub-light having a color that is the same as or different from the color of the first sub-light or the color of the second sub-light. In this case, the second display signal may also include a third sub-display signal and a fourth sub-display signal, and the first deflection angle may also include a third sub-deflection angle and a fourth sub-deflection angle. Similarly, the second black-and-white screen is used to present the third sub-deflection angle in the first sub-frame according to the third sub-display signal, and to present the fourth sub-deflection angle in the second sub-frame according to the fourth sub-display signal. The second light source is used to project a third sub-light through the second black-and-white screen in the first sub-frame to display the third sub-image on the display carrier, and to project a fourth sub-light through the second black-and-white screen in the second sub-frame to display the fourth sub-image on the display carrier. The second image includes the third sub-image and the fourth sub-image. For ease of description, the following description will only use the third sub-light in the second light as an example.

[0039] Of course, in combination with Figures 1 to 3, the second black and white screen 202 is used to present the second deflection angle according to the second display signal in the frame f, and the frames of the first black and white screen 201 and the second black and white screen 202 are synchronized; the second light source 302 is used to project the third sub-light through the second black and white screen 202 in the frame to display the second picture on the display carrier 10. As discussed above, the second black and white screen 202 can be used only to display the second picture, so in a frame f, it is only necessary to cooperate with the third sub-light projected by the second light source 302 and the second display signal to display a corresponding second picture. In this embodiment, the relationship between the duration occupied by the first sub-picture and the duration occupied by the second sub-picture is not limited, and the two can be equal. In this embodiment, the time period used to present the second picture can overlap with the time period used to present the first sub-picture and the time period used to present the second sub-picture, so that the second picture overlaps with both the first sub-picture and the second sub-picture.

[0040] 1 to 3 , the refresh rate of the first black-and-white screen 201 may be equal to or greater than the refresh rate of the second black-and-white screen 202. Specifically, the first black-and-white screen 201 and the second black-and-white screen 202 may have the same resolution and size, that is, the size and resolution of the first display screen and the second display screen may be equal. However, in a frame f, the first black-and-white screen 201 needs to be refreshed twice to sequentially display the first sub-screen and the second sub-screen, while the second black-and-white screen 202 only needs to be refreshed once to display the second screen. Therefore, the refresh rate of the first black-and-white screen 201 is greater and may be equal to twice the refresh rate of the second black-and-white screen 202.

[0041] In some embodiments, as shown in Figures 1 to 4 , the number of pixels P in the first black-and-white screen 201 that are affected by the first sub-display signal to display the first sub-screen, the number of pixels P that are affected by the second sub-display signal to display the second sub-screen, and the number of pixels P in the second black-and-white screen 202 that are affected by the second display signal to display the second screen are all equal. Because the number of pixels P used to form the first sub-screen, the second sub-screen, and the second screen is equal, that is, the number of illuminated pixels in the three screens is the same, the risk of color shift in the target screen composed of the first sub-screen, the second sub-screen, and the second screen can be reduced.

[0042] Furthermore, in order to increase the size of the display screen, the number of pixels P used to form the first sub-screen, the second sub-screen and the second screen, the number of pixels P of the first black and white screen 201, and the number of pixels P of the second black and white screen 202 can all be equal; further, in order to improve the fineness of the display screen, the amount of information of each of the first sub-display signal, the second sub-display signal and the second display signal can be set to correspond to the number of pixels P of the corresponding first black and white screen 201 or the second black and white screen 202.

[0043] In some embodiments, as shown in Figure 3, the first sub-frame f1 includes a first sub-scanning period C and a first sub-light-emitting period D located after the first sub-scanning period C, and the second sub-frame f2 includes a second sub-scanning period G and a second sub-light-emitting period H located after the second sub-scanning period G; in combination with Figures 1 and 3, the first black and white screen 201 is used to present the first sub-deflection angle according to the first sub-display signal in the first sub-scanning period C, and to present the second sub-deflection angle according to the second sub-display signal in the second sub-scanning period G; the first light source 301 is used to project the first sub-light through the first black and white screen 201 in the first sub-light-emitting period D to display the first sub-picture on the display carrier 10, and to project the second sub-light through the first black and white screen 201 in the second sub-light-emitting period H to display the second sub-picture on the display carrier 10.

[0044] For ease of description, it is taken as an example that multiple pixels in the first black and white screen 201 and the second black and white screen 202 are arranged in row and column directions, and multiple rows of pixels are turned on in sequence. During the first sub-scanning period C, multiple rows of pixels are sequentially turned on (for example, the first row of pixels is turned on in the first period A for charging and remains in the on state during the subsequent second period B. Similarly, each row of pixels remains in the on state after being turned on during the corresponding period. That is, the first sub-scanning period C is the total period during which multiple rows of pixels are sequentially turned on, and the multiple rows of pixels are sequentially acted upon by the data voltage group corresponding to the first sub-display signal. Each data voltage group includes multiple data voltages for multiple pixels in a corresponding row. After the multiple rows of pixels are sequentially deflected by the corresponding deflection angles, that is, at this time, the first black and white screen 201 is deflected to the first sub-deflection angle, the first light source 301 is turned on in the first sub-light-emitting period D to emit the first sub-light to project the first black and white screen 201 to display the first sub-picture on the display carrier 10. Similarly, during the second sub-scanning period G, the first row of pixels is turned on in the third period E for charging and remains in the on state during the subsequent fourth period F. Similarly, multiple rows of pixels are sequentially turned on, and in the subsequent second sub-light-emitting period H, the first light source 301 is turned on to emit the second sub-light to project the first black and white screen 201 to display the second sub-picture on the display carrier 10.

[0045] It should be noted that the specific configuration of the first light source 301 is not limited in this application. As shown in FIG1 , it may include a first sub-light source 3011 that emits a first sub-light beam and a second sub-light source 3012 that emits a second sub-light beam. Of course, the first light source 301 may also be configured to emit the first sub-light beam and the second sub-light beam at different time periods. Based on the configuration shown in FIG1 , the display device 100 may further include a light source control module 60. The light source control module 60 may control the time periods and the intensities (brightness) of the first sub-light source 3011, the second sub-light source 3012, and the second light source 302 in the first light source 301 to emit the first sub-light beam, the second sub-light beam, and the third sub-light beam, respectively. Specifically, the light source control module 60 is configured to control the first light source 301 to project the first sub-light beam in the first sub-frame and the second sub-light beam in the second sub-frame, and to control the second light source 302 to project the third sub-light beam in the frame.

[0046] Similarly, the second black and white screen 202 in a frame f can also be divided into a second scanning period K and a second light-emitting period L located after the second scanning period K. In the second scanning period K, multiple rows of pixels in the second black and white screen 202 are turned on in sequence. For example, the first row of pixels is turned on in the fifth period I to charge, and remains on in the subsequent sixth period J. After multiple rows of pixels are turned on in sequence, the second light source 302 is turned on in the subsequent second light-emitting period L to emit a second light to project the second black and white screen 202 to display a second picture on the display carrier 10.

[0047] In some embodiments, as shown in Figures 1 and 5 to 8, the display device 100 also includes: an image processing unit 40, used to obtain an initial display signal, and generate the first display signal corresponding to the first black and white screen 201 and the second display signal corresponding to the second black and white screen 202 based on the initial display signal; in combination with Figures 4, 10 and 13, the first black and white screen 201 includes a plurality of pixels P and a driver 30 electrically connected to the plurality of pixels P; the driver 30 is used to obtain a plurality of first sub-display information corresponding to the first sub-light of the plurality of pixels P from the first sub-display signal, and obtain a plurality of second sub-display information corresponding to the second sub-light of the plurality of pixels P from the second display signal.

[0048] Among them, the initial display signal of each frame may include a signal corresponding to the first sub-display signal, a signal corresponding to the second sub-display signal and a signal corresponding to the third sub-display signal, that is, the multiple display signals of multiple color sub-lights are originally mixed in the initial display signal, and need to be processed by the image processing unit 40 to form a first display signal that can act on the first black and white screen 201 and a second display signal that can act on the second black and white screen 202 respectively.

[0049] Specifically, as shown in Figure 5, the image processing unit 40 may include a buffer 401, a system chip 402 (which may include at least one of a system-on-chip chip and a field programmable logic gate array chip), and an image data stream processor 403. The buffer 401 can obtain one or more frames of initial display signals from the video source 50. The system chip 402 can obtain one frame of initial display signals from the video source 50, and decompose the initial display signal into corresponding multiple groups of initial display information according to sub-light rays of different colors. Each group of initial display information may include multiple initial sub-display information corresponding to multiple pixels P. Each initial sub-display information corresponds to the deflection angle required for the sub-light ray to be deflected by the pixel P. Furthermore, the image data stream processor 403 can sort and connect the multiple initial sub-display information of each group of initial display information according to the transmission order to the multiple pixels P to form a corresponding display signal (a first sub-display signal, a second sub-display signal, or a second display signal).

[0050] Furthermore, as shown in FIG6 , the number of image data stream processors 403 can be multiple. Here, two are taken as an example, namely a first image data stream processor 4031 and a second image data stream processor 4032. The first image data stream processor 4031 can obtain two sets of initial display information corresponding to two colors (color 1 and color 2, the specific colors of the two colors are not limited here) corresponding to the first light source 301 from the system chip 402, and process them to generate a first sub-display signal and a second sub-display signal. The second image data stream processor 4032 can obtain a set of initial display information corresponding to a color corresponding to the second light source 302 from the system chip 402, and process them to generate a second display signal. Since the two image data stream processors 403 can process their respective initial display information simultaneously, the overall processing speed can be improved.

[0051] Of course, as shown in FIG7 , the function of the image data stream processor 403 is integrated into the system chip 402 based on FIG4 or FIG5 , thereby eliminating the need to separately manufacture the image data stream processor 403 . Furthermore, as shown in FIG8 , the function of the buffer 401 is integrated into the system chip 402 based on FIG7 , thereby further eliminating the need to separately manufacture the buffer 401 .

[0052] It should be noted that the above-mentioned initial display signal, initial sub-display information, first sub-display signal, second sub-display signal and second display signal can all be grayscale signals, that is, the stored data represents multiple grayscale values ​​of multiple pixels P under sub-light of corresponding colors, and can be further converted into corresponding data signals through the driver 30 in the black and white screen. The data signal can include multiple data voltages corresponding to multiple pixels P, so as to ultimately act on multiple pixels P.

[0053] For ease of description, an initial display signal with an information volume of 1920RGB*1080 is used as an example, that is, a black and white screen includes 1920 columns and 1080 rows of pixels P, and the initial display signal includes three groups of initial display information corresponding to R, G, and B, respectively. Each group of initial display information includes 1920*1080 initial sub-display information corresponding to 1920*1080 pixels P.

[0054] Based on the initial display signal of each frame, the initial sub-display information is arranged in the format of (R1, G1, B1), (R2, G2, B2), (R3, G3, B3) to (R2073600, G2073600, B2073600). The first sub-display signal generated thereby includes the 1920*1080 first sub-display information (R1, R2 to R2073600) corresponding to the first sub-light (for example, red), the second sub-display signal includes the first The 1920*1080 second sub-display information (G1, G2 to G2073600) corresponding to the sub-light (for example, green) is time-shared through the 1920*1080 pixels P in the first black and white screen 201 within one frame by being acted upon by "R1, R2 to R2073600" to present the first sub-deflection angle, and by being acted upon by "G1, G2 to G2073600" to present the second sub-deflection angle, so as to coordinate with the first sub-light and the second sub-light in time-sharing to display the red first sub-screen and the green second sub-screen in time-sharing.

[0055] Similarly, the second display signal generated according to the initial display signal includes 1920*1080 initial sub-display information (B1, B2 to B2073600) corresponding to the third sub-light (for example, blue). The 1920*1080 pixels P in the second black and white screen 202 are acted upon by "B1, B2 to B2073600" within one frame to present a second deflection angle to cooperate with the third sub-light to display a blue second picture.

[0056] In some embodiments, in combination with Figures 5 to 8 and 9, the image processing unit 40 is used to parse the initial display signal to form a plurality of first sub-display information (R1, R2 to R2073600) and a plurality of second sub-display information (G1, G2 to G2073600); the image processing unit 40 is further used to fill in corresponding first sub-filling information M1 and second sub-filling information M2 after each first sub-display information (each of R1, R2 to R2073600) to form a corresponding first sub-display information group ((Ri, M1, M2), 1≤i≤2073600), and to fill in corresponding third sub-filling information M3 and fourth sub-filling information M4 after each second sub-display information (each of G1, G2 to G2073600) to form a corresponding second sub-display information group ((Gi, M3, M4), 1≤i≤2073600); the image processing unit 40 is further used to generate corresponding first sub-display signals (including (R1, M1, M2), (R2, M1, M2) to (R2073600, M1, M2)) according to multiple first sub-display information groups, and to generate corresponding second sub-display signals (including (G1, M3, M4), (G2, M3, M4) to (G2073600, M3, M4)) according to multiple second sub-display information groups.

[0057] For the sake of convenience, the above-mentioned M1, M2, M3, and M4 are all the same sub-filling information M. As an example, FIG9 illustrates the specific content of the first sub-display signal and the specific content of the second sub-display signal formed by the image processing unit 40 in the above-mentioned data processing manner. It should be noted that the 2,073,600 first sub-display information groups in the first sub-display signal can be arranged continuously, and data can be set or not set between two adjacent first sub-display information groups or rows (to indicate separation). Similarly, the second sub-display signal and the second display signal can be set.

[0058] In some embodiments, based on the data processing method of the image processing unit 40 shown in FIG9 , as shown in FIG10 , the first black-and-white screen 201 further includes a plurality of source lines 11 and switching elements 21. The driver 30 is electrically connected to the plurality of source lines 11. Each source line 11 is connected to a corresponding plurality of pixels P through the switching element 21. As shown in FIG4 , the plurality of pixels are divided into a plurality of pixel groups (e.g., divided by rows). Each pixel group includes a corresponding plurality of pixels (e.g., located in the same row). As shown in FIG11 and FIG12 , the on-period of each pixel group includes a first period t1, a second period t2, and a third period t3. During each first period t1, the switching element 21 is closed (controlled by an effective pulse of the control signal Con, which can be generated by the switch control module 31 in the driver 30). The plurality of source lines 11 are used to output a plurality of first sub-display information (including (R(1920*j+1),M, M), (R(1920*j+2),M, M) to (R(1920*j+1920), M, M), 0≤j≤(total number of rows-1)) or the corresponding plurality of second sub-display information in the plurality of second sub-display information groups (including (G(1920*j+1), M, M), (G(1920*j+2), M, M) to (G(1920*j+1920), M, M) M), 0≤j≤(total number of rows-1)), the specific output content is determined according to whether the current is the first subframe or the second subframe two; in each of the second time period t2 (controlled by the invalid level of the control signal Con), the switching element 21 is disconnected, and the plurality of source lines 11 are used to output the plurality of first sub-filling information M1 in the plurality of first sub-display information groups corresponding to the corresponding pixel group or the plurality of third sub-filling information M3 in the corresponding plurality of second sub-display information groups; in each of the third time period t3, the switching element 21 is disconnected, and the plurality of source lines 11 are used to output the plurality of second sub-filling information M2 in the plurality of first sub-display information groups corresponding to the corresponding pixel group or the plurality of fourth sub-filling information M4 in the plurality of second sub-display information groups, and the specific output content is determined according to whether the current is the first subframe or the second subframe two.

[0059] As shown in Figures 11 and 12, the clock signal CK may include multiple clock pulses p. In the first subframe, each clock pulse p may be used to control the opening of multiple pixels P in the corresponding row, so that the multiple source lines 11 transmit the multiple data voltages (generated according to the corresponding multiple first sub-display information) corresponding to the currently turned-on row to the multiple pixels P in the row. A row blanking period may be spaced between two adjacent clock pulses p. Similarly, multiple rows of sub-pixels P in the first black and white screen 201 are turned on in sequence and the liquid crystal molecules at the corresponding positions are deflected at corresponding angles (the degree of deflection is related to the corresponding data voltage), so that the overall display appears in the first black and white screen 201. A deflection angle; similarly, in the second sub-frame, as multiple rows of pixels P are turned on in sequence, multiple source lines 11 transmit multiple data voltages corresponding to the currently turned-on row (generated according to the corresponding multiple second sub-display information) to multiple pixels P in the row, so that the whole presents a second sub-deflection angle; similarly, in this frame, the second black and white screen 202 can also be accompanied by multiple rows of pixels P being turned on in sequence so that the whole presents a second deflection angle, but due to the low refresh rate, the turn-on time of each row of pixels P can be set to be longer, or the turn-on time of each row of pixels P can be the same as that of the first black and white screen, but a holding frame is added to maintain the second deflection angle.

[0060] It is understandable that, in order to meet the row resolution requirement of the driver 30 (to achieve the original 1920RGB*1080 data volume), in this embodiment, R1, R2 to R2 corresponding to the first subframe can be filled with the format of "(R1, M, M), (R2, M, M), (R3, M, M) ... (R2 073600, M, M)". Similarly, G1, G2 to G2 corresponding to the second subframe can be filled with the format of "(G1, M, M), (G2, M, M), (G3, M, M) ... (G2 073600, M, M)". Similarly, B1, B2 to B2 corresponding to the second black and white screen 202 in this frame can also be filled with the format of "(B1, M, M), (B2, M, M), (B3, M, M) ... (B2 073600, M, M)".

[0061] Among them, the above-mentioned M can correspond to a black insertion voltage. If it is transmitted to the corresponding pixel P, the corresponding liquid crystal molecules will be invalidly deflected, resulting in the sub-light being unable to pass through this position. As shown in Figures 11 and 12, in this embodiment, since the source line 11 (loaded with the data signal Data) will output "Ri or Gi", "M", and "M" in sequence within the clock pulse p, in order to prevent M from affecting the deflection angle of the corresponding pixel P, the control signal Con is set to an invalid level in the second time period t2 and the third time period t3 to electrically disconnect the source line 11 from the corresponding multiple pixels P.

[0062] Furthermore, as shown in FIG12 , regardless of whether it is the first or second subframe of the first black-and-white screen 201, the duration of the first period t1 is longer than either the duration of the second period t2 or the duration of the third period t3. Since the source line 11 transmits "Ri or Gi" for effectively controlling the deflection of the corresponding pixel P only during the first period t1, setting the first period t1 longer allows the corresponding data voltage to be fully applied to the corresponding pixel P. Similarly, the same setting can be applied to the three corresponding subframes of the second black-and-white screen 202.

[0063] In some other embodiments, based on the data processing method of the image processing unit 40 shown in FIG9 , as shown in FIG13 , the first black-and-white screen 201 further includes a plurality of source lines 11, and the driver 30 is constantly electrically connected to the corresponding plurality of pixels P through the corresponding source lines 11. As shown in FIG17 , a corresponding off period (i.e., the above-mentioned row blanking period) is provided after the on period of each pixel group P, and each off period includes a fourth period t4 and a fifth period t5. During the on period of each pixel group (corresponding to the clock pulse p), the plurality of source lines 11 are used to output a plurality of first sub-display information (including (R(1920*j+1), M, M), (R(1920*j+2), M, M) to (R(1920*j+1920), M, M), 0≤j≤(total number of rows-1)) in the plurality of first sub-display information groups corresponding to the corresponding pixel group, or a plurality of second sub-display information (including (G(1920*j+1), M, M) in the plurality of second sub-display information groups corresponding to the corresponding pixel group). M), (G(1920*j+2), M, M) to (G(1920*j+1920), M, M), 0≤j≤(total number of rows-1)); in each of the fourth time periods t4, the plurality of source lines 11 are used to output a plurality of first sub-filling information M1 (for example, M) in the plurality of first sub-display information groups corresponding to the corresponding pixel group or a plurality of third sub-filling information M3 (for example, M) in the corresponding plurality of second sub-display information groups; in each of the fifth time periods t5, the plurality of source lines 11 are used to output a plurality of second sub-filling information M2 (for example, M) in the plurality of first sub-display information groups corresponding to the corresponding pixel group or a plurality of fourth sub-filling information M4 (for example, M) in the plurality of second sub-display information groups.

[0064] The difference from the embodiment described in Figures 10 to 12 is that, in this embodiment (combined with Figures 13 and 14), since switching element 21 is not provided, the "Ri or Gi," "M," and "M" sequentially outputted from source line 11 (loaded with data signal Data) are all inputted to the corresponding pixels P. When M corresponds to a black insertion voltage, driver 30 can be controlled to sequentially output the two black insertion voltages corresponding to "M" and "M" only during the off period of pixel group P, thereby preventing the black insertion voltage from affecting the pixel P. In particular, since the on period of pixel group P is only used to output "Ri or Gi," to improve the charging effect on pixel P, the period used to output the data voltage corresponding to "Ri or Gi" can be set to be sufficiently large, with a maximum value equal to the pulse width of clock pulse p.

[0065] Of course, the M1 and M2 filled after each first sub-display information (each of R1, R2, through R2073600) can be identical to the corresponding first sub-display information. In this case, unlike in Figures 11 and 12, the control signal Con can be set to be valid pulses within clock pulse p, so that the first sub-display information, M1, and M2 sequentially output by source line 11 are all transmitted to the corresponding pixels P. In this case, switching element 21 can also be omitted, that is, source line 11 and the corresponding plurality of pixels P can be constantly connected. Similarly, the second sub-display signal and the second display signal can also be connected in the same manner.

[0066] In some embodiments, in combination with Figures 5 to 8 and Figure 15, the image processing unit 40 is used to parse the initial display signal to form a plurality of first sub-display information (R1, R2 to R2073600) and a plurality of second sub-display information (G1, G2 to G2073600); the image processing unit 40 is further used to arrange the plurality of first sub-display information to form a corresponding plurality of first sub-display information groups (each of which is (Ri, R(i+1), R(i+2)), 1≤i≤2073600-2), and to arrange the plurality of second sub-display information to form a corresponding plurality of second sub-display information groups (each of which is (Gi, G(i+1), G(i+2)), 1≤i≤2073600-2); the image processing unit 40 is further used to generate the corresponding first sub-display signal (including (R1, R2, R3), (R4, R5, R6) to (R2073658, R2073659, R2073600)), and is used to generate corresponding second sub-display signals (including (G1, G2, G3), (G4, G5, G6) to (G2073658, G2073659, G2073600)) according to multiple second sub-display information groups.

[0067] FIG15 illustrates the specific contents of the first sub-display signal and the second sub-display signal formed by the image processing unit 40 in the above-mentioned data processing manner. It should be noted that the (2073600 / 3) first sub-display information groups in the first sub-display signal can be arranged continuously, and data can be set or not set between two adjacent first sub-display information groups or rows (to indicate separation). Similarly, the second sub-display signal and the second display signal can be set.

[0068] In some other embodiments, in combination with FIG5 to FIG8 and FIG16, based on the formation of a plurality of first sub-display information groups (each of which is (Ri, R(i+1), R(i+2)), 1≤i≤2073600-2) and a plurality of second sub-display information groups (each of which is (Gi, G(i+1), G(i+2)), 1≤i≤2073600-2), the image processing unit 40 is further configured to divide the plurality of first sub-display information groups into a plurality of first information groups (each of which is ([R(1920*j+1), R(1920*j+2), R(1920*j+3)], [R(1920*j+4), R(1920*j+5)]) corresponding to a plurality of pixel groups (for example, corresponding to a plurality of rows of pixels P) [R(1920*j+6)] to [R(1920*j+1918), R(1920*j+1919), R(1920*j+1920)], 0≤j≤(total number of rows-1)), and dividing the plurality of second sub-display information groups into a plurality of second information groups ([G(1920*j+1), G(1920*j+2), G(1920*j+3)], [G(1920*j+4), G(1920*j+5), G(1920*j+6)] to [G(1920*j+1918), G(1920*j+1919), G(1920*j+1920)], 0≤j≤(total number of rows-1)); the image processing unit 40 is further used to fill each of the first information groups with a corresponding first filling information group (including (920*2) M1s arranged in sequence) to form a corresponding third information group, and to fill each of the second information groups with a corresponding second filling information group (including (920*2) M2s arranged in sequence) to form a corresponding fourth information group; the image processing unit 40 is further used to generate the corresponding first sub-display signal according to the plurality of the third information groups, and to generate the corresponding second sub-display signal according to the plurality of the fourth information groups.

[0069] For the sake of convenience, the above-mentioned M1 and M2 are taken as an example of the same sub-filling information M. Figure 16 illustrates the specific content of the first sub-display signal and the specific content of the second sub-display signal formed by the image processing unit 40 in the above-mentioned data processing method. It should be noted that the 2073600 first sub-display information groups in the first sub-display signal can be arranged continuously, and data can be set or not set between two adjacent first sub-display information groups or rows (to indicate separation). Similarly, the second sub-display signal and the second display signal can be set.

[0070] The difference between the first sub-display signals in FIG16 and FIG15 is that in the former, a first filling information group (the data amount of which is twice that of the first information group) is filled after the first information group corresponding to each row of sub-pixels, so that the data amount of the third information group obtained after filling (the data amount of which is three times that of the first information group) is equal to the data amount of 1920RGB. The third information group may include "[R(1920*j+1), R(1920*j+2), R(1920*j+3)], [R(1920*j+4), R(1920*j+5), R(1920*j+6)] to [R(1920*j+1918), R(1920*j+1919), R(1920*j+1920)]+(920*2) M1", the second sub-display signal and the second display signal can be set similarly. Although the data filling method is different from that in FIG9 , the final first sub-display signal has a data volume of 1920RGB. Similarly, it can meet the resolution requirement of the driver 30 in the row direction.

[0071] In some embodiments, based on the data processing method of the image processing unit 40 shown in Figures 15 and 16, referring to Figure 13, the first black and white screen 201 also includes a plurality of source lines 11, and the driver 30 is constantly electrically connected to the corresponding plurality of pixels P through the corresponding source lines 11; as shown in Figure 4, the plurality of pixels P are divided into a plurality of pixel groups, and each pixel group includes a corresponding plurality of pixels P; as shown in Figure 17, during the on period of each pixel group (corresponding to the clock pulse p), the plurality of source lines 11 are used to output the corresponding plurality of first sub-display information groups (that is, the corresponding first information groups) or the corresponding plurality of second sub-display information groups (that is, the corresponding second information groups) corresponding to the corresponding pixel group.

[0072] As for the data processing method of the image processing unit 40 shown in FIG15 , since M is not filled after each “Ri or Gi”, during the on period of each pixel group (corresponding to the clock pulse p), each source line 11 (loaded with the data signal Data) only outputs the data voltage corresponding to “Ri or Gi”, and the multiple source lines 11 output the first information group (respectively outputting R(1920*j+1), R(1920*j+2), R(1920*j+3)] to R(1920*j+1920)]) or the second information group (respectively outputting G(1920 Similarly, in order to improve the charging effect on the pixel P, the time period for outputting the data voltage corresponding to "Ri or Gi" can be set to be large enough, and the maximum can be equal to the pulse width of the clock pulse p; and so on, the multiple pixels P as a whole present a first sub-deflection angle in the first sub-frame and a second sub-deflection angle in the second sub-frame, and the data processing method and data voltage output method of the second black and white screen 202 can also be set in the same way.

[0073] Compared with Figure 15, although the first filling information group is filled after each corresponding first information group to form the third information group, the driver 30 can only select multiple first information groups in the first subframe to control each source line 11 to only output the corresponding Ri data voltage during the open period of the corresponding pixel P. Similarly, the driver 30 controls each source line 11 in the second subframe to only output the corresponding Gi data voltage during the open period of the corresponding pixel P. Similarly, the data processing method and data voltage output method of the second black and white screen 202 can also be set in the same way.

[0074] An embodiment of the present application also provides a driving method for a display device. In combination with the above discussion on Figure 1, the display device 100 includes the above-mentioned display carrier 10, the above-mentioned first black and white screen 201, the above-mentioned second black and white screen 202, the above-mentioned first light source 301 and the above-mentioned second light source 302, the first display signal includes the above-mentioned first sub-display signal and the above-mentioned second sub-display signal, the first light includes the above-mentioned first sub-light and the above-mentioned second sub-light of different colors, the first deflection angle includes the above-mentioned first sub-deflection angle and the above-mentioned second sub-deflection angle, and a frame includes the above-mentioned first sub-frame and the above-mentioned second sub-frame, as shown in Figure 18. The method includes but is not limited to the following steps and a combination of the following steps.

[0075] S1, controlling the first black and white screen to present the first sub-deflection angle in the first sub-frame according to the first sub-display signal, and controlling the first light source to project the first sub-light through the first black and white screen in the first sub-frame to display the first sub-picture on the display carrier.

[0076] Among them, the relevant technical features can refer to the relevant description above, the execution entity of "controlling the first black and white screen to present the first sub-deflection angle in the first sub-frame according to the first sub-display signal" can be but not limited to the above-mentioned driver 30, the first sub-display signal can be generated by the above-mentioned image processing unit 40, and the execution entity of "controlling the first light source to project the first sub-light through the first black and white screen in the first sub-frame" can be but not limited to the above-mentioned light source control module 60.

[0077] S2, controlling the first black and white screen to present the second sub-deflection angle in the second sub-frame according to the second sub-display signal, and controlling the first light source to project the second sub-light through the first black and white screen in the second sub-frame to display the second sub-picture on the display carrier, wherein the first picture includes the first sub-picture and the second sub-picture.

[0078] Similarly, the relevant technical features can refer to the relevant description above. The execution entity of "controlling the first black and white screen to present the second sub-deflection angle in the second sub-frame according to the second sub-display signal" can be but not limited to the above-mentioned driver 30, the second sub-display signal can be generated by the above-mentioned image processing unit 40, and the execution entity of "controlling the first light source to project the second sub-light through the first black and white screen in the second sub-frame" can be but not limited to the above-mentioned light source control module 60.

[0079] S3, controlling the second black and white screen to present a second deflection angle in the frame according to the second display signal, and controlling the second light source to project a third sub-light through the second black and white screen in the frame to display a second picture on the display carrier, wherein the color of the first light is different from the color of the second light, the first picture and the second picture make the display carrier present as a target picture, and the frames of the first black and white screen and the frames of the second black and white screen are synchronized.

[0080] Similarly, the relevant technical features can refer to the relevant description above. The execution entity of "controlling the second black and white screen to present the second deflection angle according to the second display signal in the frame" can be but not limited to the above-mentioned driver 30, the second display signal can be generated by the above-mentioned image processing unit 40, and the execution entity of "controlling the second light source to project the third sub-light through the second black and white screen in the frame" can be but not limited to the above-mentioned light source control module 60.

[0081] The present application provides a display device and a driving method thereof, wherein a first black-and-white screen is provided for presenting a first deflection angle according to a first display signal and a second black-and-white screen is provided for presenting a second deflection angle according to a second display signal. A frame includes a first sub-frame and a second sub-frame. The first black-and-white screen presents the first sub-deflection angle according to the first sub-display signal in the first sub-frame, and cooperates with a first sub-light source to project a first sub-light through the first black-and-white screen in the first sub-frame to display a first sub-picture on the display carrier. The first black-and-white screen presents the second sub-deflection angle according to the second sub-display signal in the second sub-frame, and cooperates with a second sub-light source to project a second sub-light through the first black-and-white screen in the second sub-frame to display a second sub-picture on the display carrier. The second light source is used to project a third sub-light (different in color from the first sub-light and the second sub-light) through the second black-and-white screen to display a second picture on the display carrier. The first sub-picture, the second sub-picture, and the second picture together constitute a target picture of a frame, so as to take into account both the small size and high brightness of the display device.

[0082] The display device and driving method thereof provided in the embodiments of the present application are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display device, wherein: include: Display carrier; A first black and white screen, used for receiving a first display signal; A second black and white screen, used for receiving a second display signal; a first light source, configured to project a first light beam through the first black-and-white screen and to display a first image on the display carrier in conjunction with the first display signal; a second light source, configured to project a second light beam through the second black-and-white screen and to display a second image on the display carrier in conjunction with the second display signal, wherein the first image and the second image are combined on the display carrier to form a target image; The first display signal includes a first sub-display signal and a second sub-display signal, and the first light includes a first sub-light and a second sub-light of different colors; The second light includes a third sub-light, and the color of the third sub-light is different from any one of the colors of the first sub-light and the second sub-light; Wherein, one frame includes a first subframe and a second subframe, and the first black and white screen is used to receive the first sub-display signal in the first subframe and receive the second sub-display signal in the second subframe; The first light source is configured to project the first sub-light beam through the first black-and-white screen in the first sub-frame and to display a first sub-picture on the display carrier in conjunction with the first sub-display signal, and is further configured to project the second sub-light beam through the second black-and-white screen in the second sub-frame and to display a second sub-picture on the display carrier in conjunction with the second sub-display signal, wherein the first picture includes the first sub-picture and the second sub-picture. The second black-and-white screen is used to receive the second display signal in the frame, and the frame of the first black-and-white screen and the frame of the second black-and-white screen are synchronized; The second light source is used to project the third sub-light beam through the second black-white screen in the frame, and to display the second picture on the display carrier in conjunction with the second display signal; The first subframe includes a first sub-scanning period and a first sub-light-emitting period located after the first sub-scanning period, and the second subframe includes a second sub-scanning period and a second sub-light-emitting period located after the second sub-scanning period. The first black and white screen is used to receive the first sub-display signal in the first sub-scanning period and receive the second sub-display signal in the second sub-scanning period; The first light source is used to project the first sub-light through the first black and white screen during the first sub-light-emitting period to display the first sub-picture on the display carrier, and is used to project the second sub-light through the second black and white screen during the second sub-light-emitting period to display the second sub-picture on the display carrier.

2. The display device according to claim 1, wherein The number of pixels in the first black and white screen that are acted upon by the first sub-display signal for displaying the first sub-picture, the number of pixels that are acted upon by the second sub-display signal for displaying the second sub-picture, and the number of pixels in the second black and white screen that are acted upon by the second display signal for displaying the second picture are all equal.

3. The display device according to claim 1, wherein Also includes: an image processing unit, configured to obtain an initial display signal, and generate, based on the initial display signal, the first display signal corresponding to the first black-and-white screen and the second display signal corresponding to the second black-and-white screen; The first black and white screen includes a plurality of pixels and a driver electrically connected to the plurality of pixels; The driver is used to obtain multiple first sub-display information of multiple pixels corresponding to the first sub-light from the first sub-display signal, and obtain multiple second sub-display information of multiple pixels corresponding to the second sub-light from the second sub-display signal.

4. A display device, wherein: include: Display carrier; A first black and white screen, used for receiving a first display signal; A second black and white screen, used for receiving a second display signal; a first light source, configured to project a first light beam through the first black-and-white screen and to display a first image on the display carrier in conjunction with the first display signal; a second light source, configured to project a second light beam through the second black-and-white screen and to display a second image on the display carrier in conjunction with the second display signal, wherein the first image and the second image are combined on the display carrier to form a target image; The first display signal includes a first sub-display signal and a second sub-display signal, and the first light includes a first sub-light and a second sub-light of different colors; The second light includes a third sub-light, and the color of the third sub-light is different from any one of the colors of the first sub-light and the second sub-light; Wherein, one frame includes a first subframe and a second subframe, and the first black and white screen is used to receive the first sub-display signal in the first subframe and receive the second sub-display signal in the second subframe; In which, the first light source is used to project the first sub-light through the first black and white screen in the first sub-frame, and cooperate with the first sub-display signal to display the first sub-picture on the display carrier, and is also used to project the second sub-light through the second black and white screen in the second sub-frame, and cooperate with the second sub-display signal to display the second sub-picture on the display carrier, and the first picture includes the first sub-picture and the second sub-picture.

5. The display device according to claim 4, wherein The second black-and-white screen is used to receive the second display signal in the frame, and the frame of the first black-and-white screen and the frame of the second black-and-white screen are synchronized; The second light source is used to project the third sub-light beam through the second black-white screen in the frame, and cooperate with the second display signal to display the second picture on the display carrier. The display device according to claim 5 , wherein: The number of pixels in the first black and white screen that are acted upon by the first sub-display signal for displaying the first sub-picture, the number of pixels that are acted upon by the second sub-display signal for displaying the second sub-picture, and the number of pixels in the second black and white screen that are acted upon by the second display signal for displaying the second picture are all equal.

7. The display device according to claim 5, wherein: The first subframe includes a first sub-scanning period and a first sub-light-emitting period located after the first sub-scanning period, and the second subframe includes a second sub-scanning period and a second sub-light-emitting period located after the second sub-scanning period; The first black and white screen is used to receive the first sub-display signal in the first sub-scanning period and receive the second sub-display signal in the second sub-scanning period; The first light source is used to project the first sub-light through the first black and white screen during the first sub-light-emitting period to display the first sub-picture on the display carrier, and is used to project the second sub-light through the second black and white screen during the second sub-light-emitting period to display the second sub-picture on the display carrier.

8. The display device according to claim 5, wherein Also includes: an image processing unit, configured to obtain an initial display signal, and generate, based on the initial display signal, the first display signal corresponding to the first black-and-white screen and the second display signal corresponding to the second black-and-white screen; The first black and white screen includes a plurality of pixels and a driver electrically connected to the plurality of pixels; The driver is used to obtain multiple first sub-display information of multiple pixels corresponding to the first sub-light from the first sub-display signal, and obtain multiple second sub-display information of multiple pixels corresponding to the second sub-light from the second sub-display signal.

9. The display device according to claim 8, wherein The image processing unit is used to analyze the initial display signal to form a plurality of the first sub-display information and a plurality of the second sub-display information; The image processing unit is further configured to fill corresponding first sub-filling information and second sub-filling information after each first sub-display information to form a corresponding first sub-display information group, and to fill corresponding third sub-filling information and fourth sub-filling information after each second sub-display information to form a corresponding second sub-display information group; The image processing unit is further configured to generate corresponding first sub-display signals according to a plurality of first sub-display information groups, and to generate corresponding second sub-display signals according to a plurality of second sub-display information groups.

10. The display device according to claim 9, wherein The first black and white screen further includes a plurality of source lines and switching elements, the driver is electrically connected to the plurality of source lines, and each of the source lines is connected to a corresponding plurality of pixels through the switching element; The plurality of pixels are divided into a plurality of pixel groups, each of the pixel groups includes a corresponding plurality of pixels, and an on-period of each of the pixel groups includes a first period, a second period, and a third period; During each of the first time periods, the switch element is closed, and the plurality of source lines are used to output the plurality of first sub-display information in the plurality of first sub-display information groups corresponding to the corresponding pixel group or the plurality of second sub-display information in the plurality of second sub-display information groups corresponding to the corresponding pixel group; During each second period, the switch element is turned off, and the plurality of source lines are used to output the plurality of first sub-filling information in the plurality of first sub-display information groups corresponding to the corresponding pixel group or the plurality of third sub-filling information in the plurality of second sub-display information groups corresponding to the corresponding pixel group; In each third period, the switch element is turned off, and the plurality of source lines are used to output the plurality of second sub-filling information in the plurality of first sub-display information groups corresponding to the corresponding pixel group or the plurality of fourth sub-filling information in the plurality of second sub-display information groups corresponding to the corresponding pixel group.

11. The display device according to claim 10, wherein: The duration of the first time period is longer than any one of the duration of the second time period and the duration of the third time period.

12. The display device according to claim 9, wherein The first black and white screen further includes a plurality of source lines, and the driver is constantly electrically connected to the corresponding plurality of pixels through the corresponding source lines; The plurality of pixels are divided into a plurality of pixel groups, each of the pixel groups includes a corresponding plurality of pixels, an on period of each pixel group is followed by a corresponding off period, and each off period includes a fourth period and a fifth period; During an on period of each pixel group, the plurality of source lines are used to output a plurality of first sub-display information in a plurality of first sub-display information groups corresponding to the corresponding pixel group or a plurality of second sub-display information in a plurality of second sub-display information groups corresponding to the corresponding pixel group; In each of the fourth time periods, the plurality of source lines are used to output the plurality of first sub-filling information in the plurality of first sub-display information groups corresponding to the corresponding pixel group or the plurality of third sub-filling information in the plurality of second sub-display information groups corresponding to the corresponding pixel group; In each of the fifth time periods, the plurality of source lines are used to output the plurality of second sub-filling information in the plurality of first sub-display information groups corresponding to the corresponding pixel group or the plurality of fourth sub-filling information in the plurality of second sub-display information groups corresponding to the corresponding pixel group.

13. The display device according to claim 8, wherein The image processing unit is used to analyze the initial display signal to form a plurality of first sub-display information and a plurality of second sub-display information; The image processing unit is further configured to arrange the plurality of first sub-display information to form a corresponding plurality of first sub-display information groups, and to arrange the plurality of second sub-display information to form a corresponding plurality of second sub-display information groups; The image processing unit is further configured to generate corresponding first sub-display signals according to a plurality of first sub-display information groups, and to generate corresponding second sub-display signals according to a plurality of second sub-display information groups.

14. The display device according to claim 13, wherein: The plurality of pixels are divided into a plurality of pixel groups, each of the pixel groups includes a corresponding plurality of pixels; The image processing unit is further configured to divide the plurality of first sub-display information groups into a plurality of first information groups corresponding to a plurality of pixel groups, and to divide the plurality of second sub-display information groups into a plurality of second information groups corresponding to a plurality of pixel groups; The image processing unit is further configured to fill each first information group with a corresponding first filling information group to form a corresponding third information group, and fill each second information group with a corresponding second filling information group to form a corresponding fourth information group; The image processing unit is further configured to generate corresponding first sub-display signals according to the plurality of third information groups, and to generate corresponding second sub-display signals according to the plurality of fourth information groups.

15. The display device according to claim 14, wherein The first black and white screen further includes a plurality of source lines, and the driver is constantly electrically connected to the corresponding plurality of pixels through the corresponding source lines; The plurality of pixels are divided into a plurality of pixel groups, each of the pixel groups includes a corresponding plurality of pixels; During an on-period of each pixel group, the plurality of source lines are used to output the plurality of first sub-display information groups or the plurality of second sub-display information groups corresponding to the corresponding pixel group.

16. The display device according to claim 13, wherein The first black and white screen further includes a plurality of source lines, and the driver is constantly electrically connected to the corresponding plurality of pixels through the corresponding source lines; The plurality of pixels are divided into a plurality of pixel groups, each of the pixel groups includes a corresponding plurality of pixels; During an on-period of each pixel group, the plurality of source lines are used to output the plurality of first sub-display information groups or the plurality of second sub-display information groups corresponding to the corresponding pixel group.

17. The display device according to claim 8, wherein: Also includes: The light source control module is used to control the first light source to project the first sub-ray in the first sub-frame and the second sub-ray in the second sub-frame, and to control the second light source to project the third sub-ray in the frame.

18. The display device according to claim 5, wherein The second light further includes a fourth sub-light, and the color of the fourth sub-light is the same as the color of the first sub-light or the color of the second sub-light; The second light source is used to project the third sub-light beam through the second black-white screen in the first sub-frame, and to project the fourth sub-light beam through the second black-white screen in the corresponding second sub-frame.

19. The display device according to claim 4, wherein: The first subframe includes a first sub-scanning period and a first sub-light-emitting period located after the first sub-scanning period, and the second subframe includes a second sub-scanning period and a second sub-light-emitting period located after the second sub-scanning period; The first black and white screen is used to receive the first sub-display signal in the first sub-scanning period and receive the second sub-display signal in the second sub-scanning period; The first light source is used to project the first sub-light through the first black and white screen during the first sub-light-emitting period to display the first sub-picture on the display carrier, and is used to project the second sub-light through the second black and white screen during the second sub-light-emitting period to display the second sub-picture on the display carrier.

20. A method for driving a display device, wherein: The display device includes a display carrier, a first black-and-white screen, a second black-and-white screen, a first light source, and a second light source. The first light source is used to project a first light ray, the first light ray including a first sub-light ray and a second sub-light ray of different colors. The second light source is used to project a second light ray, the second light ray including a third sub-light ray, the color of the third sub-light ray being different from either the color of the first sub-light ray or the color of the second sub-light ray. A frame includes the first sub-frame and the second sub-frame. The method includes: In a first subframe within a frame, controlling the first black-and-white screen to receive a first sub-display signal in a first display signal, and controlling the first light source to project the first sub-light through the first black-and-white screen to display a first sub-picture on the display carrier; In a second subframe within a frame, controlling the first black-and-white screen to receive a second sub-display signal in the first display signal, and controlling the first light source to project the second sub-light through the first black-and-white screen to display a second sub-image on the display carrier, the first sub-image and the second sub-image being combined and presented as a first image on the display carrier; Within the frame, the second black and white screen is controlled to receive a second display signal, and the second light source is controlled to project a third sub-light through the second black and white screen to display a second picture on the display carrier. The first picture and the second picture are combined on the display carrier to present a target picture, and the frame of the first black and white screen and the frame of the second black and white screen are synchronized.

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