Display device and its driving method
By employing a dual black-and-white screen structure and different color light source projection technology in the LCD projector, the problems of low brightness in single-panel LCDs and large size in triple-panel LCDs have been solved, achieving a display effect of high brightness and small size.
Patent Information
- Application Number
- CN202410342163.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-22
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2044-03-22
AI Technical Summary
Existing single-panel LCD projectors have low brightness, while three-panel LCD projectors are large in size.
It adopts a dual monochrome screen structure, in which light is projected into different frames by the first and second monochrome screens in combination with light sources of different colors to form a composite image, reducing the number of LCD panels to reduce the size of the device, while increasing the brightness.
It achieves increased display brightness, reduced number of LCD panels, reduced color shift risk, and improved display detail without increasing device size.
Smart Images
Figure CN118447779B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of display technology, and more particularly to display devices and their driving methods. Background Technology
[0002] The basic principle of an LCD (Liquid Crystal Display) projector is to use a liquid crystal module to modulate the color of light emitted from a light source and projected onto the screen. Depending on the number of liquid crystal panels (at least the corresponding liquid crystal module) used, projectors can be divided into single-panel and triple-panel types. A single-panel projector works by projecting a white light source through the liquid crystal panel onto a substrate (e.g., a screen). A triple-panel projector uses three different colored light sources, each projected through a corresponding liquid crystal panel without a color filter. The light is refracted through the light path and projected onto the substrate (e.g., a screen).
[0003] The drawback of a single-panel LCD projector is that the brightness of the displayed image is lower under the same light source conditions, while the drawback of a three-panel LCD projector is that the larger number of LCD panels results in a larger device size.
[0004] Therefore, existing projectors with single-panel and three-panel LCDs have the aforementioned problems and urgently need improvement. Summary of the Invention
[0005] The present invention provides a display device and a driving method thereof to improve the technical problems of existing single-panel LCD projectors having low brightness of the displayed image under the same light source conditions, and three-panel LCD projectors having a large number of liquid crystal panels resulting in a large device size.
[0006] This invention provides a display device, comprising:
[0007] Display carrier;
[0008] The first black-and-white screen is used to receive the first display signal;
[0009] The second black-and-white screen is used to receive the second display signal;
[0010] A first light source is used to project a first light ray through the first black and white screen and, in conjunction with the first display signal, to display a first image on the display carrier;
[0011] The second light source is used to project a second light beam through the second black-and-white screen and, in conjunction with the second display signal, to display a second image on the display carrier. The first image and the second image are combined on the display carrier to present a target image.
[0012] Wherein, 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 ray includes a third sub-ray, the color of which is different from either the color of the first sub-ray or the color of the second ray.
[0014] One frame includes a first subframe and a second subframe. The first black and white screen is used to receive the first sub-display signal in the first subframe and the second sub-display signal in the second subframe.
[0015] The first light source is used to project the first sub-light beam 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-image on the display carrier. It is also used to project the second sub-light beam 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-image on the display carrier. The first image includes the first sub-image and the second sub-image.
[0016] In some embodiments, the second black-and-white screen is used to receive the second display signal in the frame, and the frames of the first black-and-white screen and the frames of the second black-and-white screen are synchronized.
[0017] The second light source is used to project the third sub-ray through the second black-and-white screen onto the frame, and in conjunction with the second display signal, to display the second image on the display carrier.
[0018] In some embodiments, the number of pixels in the first black-and-white screen that are acted upon by the first sub-display signal to display the first sub-image, the number of pixels acted upon by the second sub-display signal to display the second sub-image, and the number of pixels in the second black-and-white screen that are acted upon by the second display signal to display the second image are all equal.
[0019] In some embodiments, the first subframe includes a first sub-scanning period and a first sub-emission period following the first sub-scanning period, and the second subframe includes a second sub-scanning period and a second sub-emission period following the second sub-scanning period;
[0020] The first black-and-white screen is used to receive the first sub-display signal during the first sub-scanning period and to receive the second sub-display signal during the second sub-scanning period;
[0021] The first light source is used to project the first sub-light beam through the first black-and-white screen during the first sub-light emission period to display the first sub-image on the display carrier, and is used to project the second sub-light beam through the second black-and-white screen during the second sub-light emission period to display the second sub-image on the display carrier.
[0022] In some embodiments, it also includes:
[0023] An image processing unit is configured to acquire an initial display signal and generate a first display signal corresponding to the first black-and-white screen and a second display signal corresponding to the second black-and-white screen based on the initial display signal.
[0024] The first monochrome screen includes multiple pixels and a driver electrically connected to the multiple pixels;
[0025] The driver is used to obtain multiple first sub-display information of multiple pixels corresponding to the first sub-ray from the first sub-display signal, and to obtain multiple second sub-display information of multiple pixels corresponding to the second sub-ray from the second sub-display signal.
[0026] In some embodiments, the image processing unit is used to parse the initial display signal to form a plurality of first sub-display information and a plurality of second sub-display information;
[0027] The image processing unit is further configured to fill in 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 in 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;
[0028] The image processing unit is further configured to generate a corresponding first sub-display signal based on a plurality of first sub-display information groups, and to generate a corresponding second sub-display signal based on a plurality of second sub-display information groups.
[0029] In some embodiments, the first monochrome screen further includes multiple source lines and switching elements, the driver is electrically connected to the multiple source lines, and each source line is connected to a corresponding plurality of pixels through the switching elements;
[0030] The plurality of pixels are divided into a plurality of pixel groups, each pixel group includes a corresponding plurality of pixels, and the activation time period of each pixel group includes a first time period, a second time period and a third time period;
[0031] During each of the first time periods, the switching element is closed, and the multiple source lines are used to output multiple first sub-display information from multiple first sub-display information groups corresponding to the corresponding pixel group or multiple second sub-display information from multiple second sub-display information groups.
[0032] During each of the second time periods, the switching element is turned off, and the multiple source lines are used to output multiple first sub-fill information in multiple first sub-display information groups corresponding to the corresponding pixel group or multiple third sub-fill information in multiple second sub-display information groups.
[0033] During each of the third time periods, the switching element is turned off, and the multiple source lines are used to output multiple second sub-fill information from the multiple first sub-display information groups corresponding to the corresponding pixel group, or multiple fourth sub-fill information from the multiple second sub-display information groups.
[0034] In some embodiments, the duration of the first time period is greater than the duration of the second time period or the duration of the third time period.
[0035] In some embodiments, the first monochrome screen further includes multiple source lines, and the driver is electrically connected to the corresponding multiple pixels through the corresponding source lines;
[0036] The plurality of pixels are divided into a plurality of pixel groups, each pixel group includes a corresponding plurality of pixels, and each pixel group has a corresponding closing period after the opening period, each closing period including a fourth period and a fifth period;
[0037] During the activation period of each pixel group, the multiple source lines are used to output multiple first sub-display information in multiple first sub-display information groups corresponding to the pixel group or multiple second sub-display information in multiple second sub-display information groups corresponding to the pixel group.
[0038] In each of the fourth time periods, the multiple source lines are used to output multiple first sub-fill information in multiple first sub-display information groups corresponding to the corresponding pixel group or multiple third sub-fill information in multiple second sub-display information groups.
[0039] In each of the fifth time periods, the multiple source lines are used to output multiple second sub-fill information in the multiple first sub-display information groups corresponding to the corresponding pixel group, or multiple fourth sub-fill information in the multiple second sub-display information groups.
[0040] In some embodiments, the image processing unit is used to parse the initial display signal to form a plurality of first sub-display information and a plurality of second sub-display information;
[0041] The image processing unit is further configured to arrange multiple first sub-display information to form a corresponding multiple first sub-display information group, and to arrange multiple second sub-display information to form a corresponding multiple second sub-display information group;
[0042] The image processing unit is further configured to generate a corresponding first sub-display signal based on a plurality of first sub-display information groups, and to generate a corresponding second sub-display signal based on a plurality of second sub-display information groups.
[0043] In some embodiments, the plurality of pixels are divided into a plurality of pixel groups, and each pixel group includes a corresponding plurality of pixels;
[0044] 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;
[0045] The image processing unit is further configured to fill a corresponding first filling information group after each first information group to form a corresponding third information group, and to fill a corresponding second filling information group after each second information group to form a corresponding fourth information group.
[0046] The image processing unit is further configured to generate a corresponding first sub-display signal based on a plurality of the third information groups, and to generate a corresponding second sub-display signal based on a plurality of the fourth information groups.
[0047] In some embodiments, the first monochrome screen further includes multiple source lines, and the driver is electrically connected to the corresponding multiple pixels through the corresponding source lines;
[0048] The plurality of pixels are divided into a plurality of pixel groups, and each pixel group includes a corresponding plurality of pixels;
[0049] During the activation period of each pixel group, the multiple source lines are used to output multiple first sub-display information groups or multiple second sub-display information groups corresponding to the pixel group.
[0050] In some embodiments, it also includes:
[0051] The light source control module is used to control the first light source to project the first sub-ray in the first sub-frame, to project 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.
[0052] In some embodiments, the second ray further includes a fourth sub-ray, the color of which is the same as the color of the first sub-ray or the color of the second ray;
[0053] The second light source is used to project the third sub-ray through the second black-and-white screen in the first sub-frame, and to project the fourth sub-ray through the second black-and-white screen in the corresponding second sub-frame.
[0054] This invention also provides a driving method for a display device, the display device including 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 ray, the first ray including a first sub-ray and a second sub-ray of different colors. The second light source is used to project a second ray, the second ray including a third sub-ray, the color of the third sub-ray being different from either the color of the first sub-ray or the color of the second sub-ray. A frame includes a first sub-frame and a second frame. The method includes:
[0055] In the first subframe within a frame, the first black-and-white screen is controlled to receive the first sub-display signal in the first display signal, and the first light source is controlled to project the first sub-light beam passing through the first black-and-white screen to display the first sub-image on the display carrier;
[0056] In the second subframe within a frame, the first black-and-white screen is controlled to receive the second sub-display signal in the first display signal, and the first light source is controlled to project the second sub-light beam through the first black-and-white screen to display the second sub-image on the display carrier. The first sub-image and the second sub-image are combined on the display carrier to present the first image.
[0057] Within the frame, the second black-and-white screen is controlled to receive the second display signal, and the second light source is controlled to project a third sub-ray through the second black-and-white screen to display a second image on the display carrier. The first image and the second image are combined on the display carrier to present a target image, and the frames of the first black-and-white screen and the second black-and-white screen are synchronized.
[0058] This invention provides a display device and its driving method. By setting a first black-and-white screen for presenting a first deflection angle according to a first display signal and a second black-and-white screen for presenting a second deflection angle according to a second display signal, a frame includes a first sub-frame and a second sub-frame. In the first 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, a first sub-light source projects a first sub-ray through the first black-and-white screen to display a first sub-image on the display carrier. In the second sub-frame, the first black-and-white screen presents the second sub-deflection angle according to the second sub-display signal. In the second sub-frame, a second sub-light source projects a second sub-ray through the first black-and-white screen to display a second sub-image on the display carrier. The second light source projects a third sub-ray (different in color from the first and second sub-rays) through the second black-and-white screen to display a second image on the display carrier. The first sub-image, the second sub-image, and the second image together constitute a target image of a frame, thus balancing the small size and high brightness of the display device. Attached Figure Description
[0059] The present invention will be further described below with reference to the accompanying drawings. It should be noted that the accompanying drawings described below are merely for illustrating some embodiments of the present invention. Those skilled in the art can obtain other drawings based on these drawings without any creative effort.
[0060] Figure 1 , Figures 5 to 8 This is a structural block diagram of a display device provided in an embodiment of the present invention.
[0061] Figure 2 and Figure 3 This is a schematic diagram of time segmentation within a frame provided in an embodiment of the present invention.
[0062] Figure 4 This is a schematic diagram of the pixel arrangement of the first black-and-white screen and the second black-and-white screen provided in an embodiment of the present invention.
[0063] Figure 9 , Figure 15 , Figure 16 This is a schematic diagram illustrating 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 invention.
[0064] Figure 10 , Figure 13 This is a schematic diagram showing the connection of multiple source lines in a display device provided in an embodiment of the present invention.
[0065] Figure 11 , Figure 12 , Figure 14 , Figure 17 The waveform diagrams are provided for some signals in the embodiments of the present invention.
[0066] Figure 18 A flowchart of a driving method for a display device provided in an embodiment of the present invention. Detailed Implementation
[0067] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.
[0068] The terms "first," "second," etc., used in this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or modules is not limited to the listed steps or modules, but may optionally include steps or modules not listed, or may optionally include other steps or modules inherent to these processes, methods, products, or apparatuses.
[0069] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0070] The present invention provides a display device, which may include, but is not limited to, the following embodiments and combinations thereof.
[0071] In some embodiments, such as Figure 1 As shown, the display device 100 includes: a display carrier 10; a first black-and-white screen 201 for presenting a first deflection angle according to a first display signal; a second black-and-white screen 202 for presenting a second deflection angle according to a second display signal; a first light source 301 for projecting a first light ray passing through the first black-and-white screen 201 to display a first image on the display carrier 10; and a second light source 302 for projecting a second light ray passing through the second black-and-white screen 202 to display a second image on the display carrier 10, wherein the first image and the second image are combined on the display carrier to present a target image.
[0072] Specifically, the display carrier 10 can be, but is not limited to, a screen or other carrier that can receive and reflect light to display an image. Since the first light source 301 and the second light source 302 can provide first light 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 to be equipped with color filters. However, both need to include corresponding driving units and liquid crystal modules. Each driving unit can control the liquid crystal molecules in the corresponding liquid crystal module to deflect at a corresponding angle (collectively referred to as the first deflection angle or the second deflection angle) according to the acquired display signal (first display signal or second display signal) to present the corresponding light transmittance, so that the light of the corresponding color (first light or second light) passes through with the corresponding light transmittance to display the corresponding color image (first image or second image) on the display carrier 10. The display carrier 10 actually displays the first image and the second image of different colors, but what the human eye sees is an image superimposed by the first image and the second image.
[0073] The aforementioned monochrome screen may include a first substrate and a second substrate disposed opposite to each other. The side of the first substrate closest to the second substrate may be provided with a driving layer (including multiple pixel circuits and multiple pixel electrodes), and the side of the second substrate closest to the first substrate may be provided with a common electrode layer. A liquid crystal layer is provided between the driving layer and the common electrode layer. Each pixel circuit causes the corresponding pixel electrode to have a corresponding pixel voltage according to the received data voltage. The common electrode layer may be loaded with a common voltage. The liquid crystal molecules in the liquid crystal layer corresponding to the position of each pixel electrode may be deflected at a corresponding angle according to the corresponding pixel voltage and the common electrode voltage so that monochromatic light transmits a corresponding amount, so as to present an image of the corresponding brightness and color on the display carrier 10.
[0074] Among them, combined as Figures 1 to 3 As shown, the first display signal includes a first sub-display signal and a second sub-display signal; the first light ray includes a first sub-ray and a second sub-ray of different colors; the first deflection angle includes a first sub-deflection angle and a second sub-deflection angle; wherein, the second light ray includes a third sub-ray, the color of which is different from either the color of the first sub-ray or the color of the second sub-ray. That is, the color of at least one sub-ray in the first light ray is different from the color of at least one sub-ray in the second light ray.
[0075] Wherein, a frame f includes a first subframe f1 and a second subframe f2; the first black and white screen 201 is used to present the first sub-deflection angle in the first subframe f1 according to the first sub-display signal, and is used to present the second sub-deflection angle in the second subframe f2 according to the second sub-display signal; the first light source 301 is used to project the first sub-light beam passing through the first black and white screen 201 in the first subframe f1 to display the first sub-image on the display carrier 10, and is used to project the second sub-light beam passing through the second black and white screen 202 in the second subframe f2 to display the second sub-image on the display carrier 10; wherein, the first image includes the first sub-image and the second sub-image.
[0076] Understandably, in this embodiment, by setting two black and white screens, each with its own color light source to display the corresponding color image, the brightness of the target image can be avoided by setting only a single white light source. Simultaneously, the first light beam projected onto the first black and white screen 201 includes a first sub-light beam and a second sub-light beam 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 beam and a second sub-display signal corresponding to the second sub-light beam. This allows the first subframe f1 and the second subframe f2 of the first black and white screen 201 within a frame f to be projected sequentially onto the display carrier 10 in conjunction with the first sub-light beam and the second sub-light beam, respectively. The first sub-screen and the second sub-screen, each with a different color, are displayed. Since the first black and white screen 201 can display the first sub-screen and the second sub-screen in sequence, the number of black and white screens can be reduced to decrease the size 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 projected by a second light including a third sub-light (the color of which is different from either the color of the first sub-light or the color of the second sub-light) to display the second image on the display carrier 10. What the human eye sees in one frame is a color target image superimposed from the first image (including the first sub-screen and the second sub-screen presented in sequence) and the second image.
[0077] It should be noted that the second light ray may also include a fourth sub-ray of the same or different color from either the first or second sub-ray. In this case, the second display signal may also include a third and a fourth sub-display signal, and the first deflection angle may also include a third 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 the third sub-ray through the second black-and-white screen in the first sub-frame to display a third sub-image on the display carrier, and to project the fourth sub-ray through the second black-and-white screen in the second sub-frame to display a fourth sub-image on the display carrier. The second image includes both the third and fourth sub-images. For ease of description, the following explanation will only use the third sub-ray in the second light ray as an example.
[0078] Of course, combined with, for example Figures 1 to 3 As shown, the second black-and-white screen 202 is used to present the second deflection angle in frame f according to the second display signal. 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-ray through the second black-and-white screen 202 in the frame to display the second image on the display carrier 10. As discussed above, the second black-and-white screen 202 can be used only to display the second image. Therefore, in one frame f, it is only necessary to coordinate with the third sub-ray projected by the second light source 302 and the second display signal to display a corresponding second image. In this embodiment, the time period occupied for presenting the first sub-image and the time period occupied for presenting the second sub-image are not limited in size, and they can be equal. In this embodiment, the time period for presenting the second image can overlap with the time period for presenting the first sub-image and the time period for presenting the second sub-image, so that the second image overlaps with both the first and second sub-images.
[0079] Among them, combined as Figures 1 to 3 As shown, the refresh rate of the first black-and-white screen 201 is equal to or greater than the refresh rate of the second black-and-white screen 202. Specifically, the resolution and size of the first black-and-white screen 201 and the second black-and-white screen 202 are the same, that is, the size and resolution of the first display screen and the second display screen can be equal. In one frame f, the first black-and-white screen 201 needs to refresh twice to display the first sub-screen and the second sub-screen in sequence, while the second black-and-white screen 202 only needs to refresh once to display the second screen. Therefore, the refresh rate of the first black-and-white screen 201 is greater, which can be twice the refresh rate of the second black-and-white screen 202.
[0080] In some embodiments, combined with such Figures 1 to 4As shown, the number of pixels P in the first black-and-white screen 201 used to display the first sub-image by the first sub-display signal, the number of pixels P used to display the second sub-image by the second sub-display signal, and the number of pixels P in the second black-and-white screen 202 used to display the second image by the second display signal are all equal. Since the number of pixels P used to form the first, second, and second sub-images is equal, that is, the number of luminous pixels in the three images is the same, the risk of color shift in the target image composed of the first, second, and second sub-images can be reduced.
[0081] Furthermore, to increase the size of the displayed image, the number of pixels P used to form the first sub-image, the second sub-image, and the second image, 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 still, to improve the detail of the displayed image, the amount of information in each of the first sub-display signal, the second sub-display signal, and the second display signal can be set according to the number of pixels P of the corresponding first black-and-white screen 201 or second black-and-white screen 202.
[0082] In some embodiments, such as Figure 3 As shown, the first subframe f1 includes a first sub-scanning period C and a first sub-emission period D following the first sub-scanning period C; the second subframe f2 includes a second sub-scanning period G and a second sub-emission period H following the second sub-scanning period G; combined with Figure 1 and Figure 3 As shown, the first black-and-white screen 201 is used to present the first sub-deflection angle according to the first sub-display signal during the first sub-scanning period C, and to present the second sub-deflection angle according to the second sub-display signal during the second sub-scanning period G; the first light source 301 is used to project the first sub-light beam passing through the first black-and-white screen 201 during the first sub-light emission period D to display the first sub-image on the display carrier 10, and to project the second sub-light beam passing through the first black-and-white screen 201 during the second sub-light emission period H to display the second sub-image on the display carrier 10.
[0083] For ease of description, this example uses the case where multiple pixels in the first black and white screen 201 and the second black and white screen 202 are arranged along the row and column directions, and multiple rows of pixels are turned on sequentially. During the first sub-scanning period C, multiple rows of pixels are turned on sequentially (for example, the first row of pixels is turned on to charge during the first period A and remains on during the subsequent second period B; similarly, each row of pixels remains on after being turned on during its corresponding period, i.e., the first sub-scanning period C is the total period during which multiple rows of pixels are turned on sequentially, and multiple rows of pixels are acted on sequentially by the data voltage group corresponding to the first sub-display signal. Each data voltage group includes multiple data voltages of multiple pixels in the corresponding row. After the multiple rows of pixels are deflected by the corresponding deflection angles, i.e., the first black and white screen 201 is deflected to the first sub-deflection angle, and then the first light source 301 is turned on during the first sub-light emission period D to emit the first sub-light beam to project onto the first black and white screen 201 to display the first sub-image on the display carrier 10; similarly, during the second sub-scanning period G, the first row of pixels is turned on to charge during the third period E and remains on during the subsequent fourth period F, and so on, multiple rows of pixels are turned on sequentially, and then the first light source 301 is turned on during the subsequent second sub-light emission period H to emit the second sub-light beam to project onto the first black and white screen 201 to display the second sub-image on the display carrier 10.
[0084] It should be noted that the specific configuration of the first light source 301 is not limited in this invention, such as... Figure 1 As shown, it can include a first sub-light source 3011 emitting a first sub-ray and a second sub-light source 3012 emitting a second sub-ray. Alternatively, the first light source 301 can be configured to emit the first sub-ray and the second sub-ray at different times. Based on... Figure 1 As shown in the configuration, the display device 100 may further include a light source control module 60. The light source control module 60 can control 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, the second sub-light, and the third sub-light respectively, as well as the intensity (brightness) of the three sub-lights. Specifically, the light source control module 60 is used to control the first light source 301 to project the first sub-light in the first sub-frame, to project the second sub-light in the second sub-frame, and to control the second light source 302 to project the third sub-light in the frame.
[0085] Similarly, the second black and white screen 202 can also be divided into a frame f, including a second scanning period K and a second light emission period L located after the second scanning period K. During 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 sixth period J thereafter. After the multiple rows of pixels are turned on in sequence, the second light source 302 is turned on in the subsequent second light emission period L to emit second light to project onto the second black and white screen 202 to display the second image on the display carrier 10.
[0086] In some embodiments, such as Figure 1 , Figures 5 to 8 As shown, the display device 100 further includes: an image processing unit 40, configured to acquire an initial display signal, and generate a first display signal corresponding to the first black-and-white screen 201 and a second display signal corresponding to the second black-and-white screen 202 based on the initial display signal; combined with Figure 4 , Figure 10 and Figure 13 As shown, 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 of the plurality of pixels P corresponding to the first sub-ray from the first sub-display signal, and to obtain a plurality of second sub-display information of the plurality of pixels P corresponding to the second sub-ray from the second display signal.
[0087] 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. After processing by the image processing unit 40, they can be used to form a first display signal that can be applied to the first black and white screen 201 and a second display signal that can be applied to the second black and white screen 202 respectively.
[0088] Specifically, such as Figure 5As shown, the image processing unit 40 may include a buffer 401, a system chip 402 (which may include at least one of a system-on-a-chip and a field-programmable gate array chip), and an image data stream processor 403. The buffer 401 can acquire one or more frames of initial display signals from the video source 50. The system chip 402 can acquire one frame of initial display signal from the video source 50 and decompose the initial display signal into multiple sets of corresponding initial display information according to different color sub-light rays. Each set 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 pixel P to deflect the corresponding sub-light ray. Furthermore, the image data stream processor 403 can sort and connect the multiple initial sub-display information of each set of initial display information according to the transmission order to multiple pixels P to form a corresponding display signal (first sub-display signal, second sub-display signal, or second display signal).
[0089] Furthermore, such as Figure 6 As shown, there can be multiple image data stream processors 403. Here, we take two as an example: 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 the two colors (color 1 and color 2, the specific colors are not limited here) of 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 one color of the second light source 302 from the system chip 402, and process it 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.
[0090] Of course, such as Figure 7 As shown, in Figure 4 or Figure 5 Based on this, the functions of the image data stream processor 403 are integrated into the system chip 402, thus eliminating the need to manufacture the image data stream processor 403 separately. Furthermore, such as... Figure 8 As shown, in Figure 7 Based on this, the function of buffer 401 is integrated into system chip 402, further eliminating the need to manufacture buffer 401 separately.
[0091] It should be noted that the initial display signal, initial sub-display information, first sub-display signal, second sub-display signal and second display signal mentioned above can all be grayscale signals. That is, the stored data represents multiple grayscale values of multiple pixels P under the corresponding color sub-light. Furthermore, the driver 30 in the black and white screen can be converted into corresponding data signals. The data signals can include multiple data voltages corresponding to multiple pixels P, so as to ultimately act on multiple pixels P.
[0092] For ease of description, this example illustrates the information content of the initial display signal as 1920RGB*1080. That is, the black and white screen includes 1920 columns and 1080 rows of pixels P, and the initial display signal includes three sets of initial display information corresponding to R, G, and B respectively. Each set of initial display information includes 1920*1080 initial sub-display information corresponding to 1920*1080 pixels P.
[0093] The initial display signal for each frame includes 3*1920*1080 initial sub-display information arranged in the format (R1, G1, B1), (R2, G2, B2), (R3, G3, B3) to (R2073600, G2073600, B2073600). Based on this, the first sub-display signal generated includes 1920*1080 first sub-display information (R1, R2 to R2073600) corresponding to the first sub-ray (e.g., red). The second sub-display signal includes the first... The 1920*1080 second sub-display information (G1, G2 to G2073600) corresponding to the sub-ray (e.g., green) are time-divisionally processed by "R1, R2 to R2073600" within one frame to present the first sub-deflection angle, and "G1, G2 to G2073600" to present the second sub-deflection angle, so as to coordinate with the first sub-ray and the second sub-ray in a time-division manner to display the red first sub-image and the green second sub-image.
[0094] Similarly, the second display signal generated based on the initial display signal includes 1920*1080 initial sub-display information (B1, B2 to B2073600) corresponding to the third sub-ray (e.g., blue). These information are processed by "B1, B2 to B2073600" in one frame through 1920*1080 pixels P in the second black and white screen 202 to present a second deflection angle, so as to cooperate with the third sub-ray to display the second blue image.
[0095] In some embodiments, combined with Figures 5 to 8 , Figure 9As shown, 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 also used to fill corresponding first sub-filling information M1 and second sub-filling information M2 after each of the first sub-display information (R1, R2 to R2073600) to form a corresponding first sub-display information group ((Ri, M1, M2), 1≤i≤2073600), and to fill corresponding first sub-filling information M1 and second sub-filling information M2 after each of the second sub-display information (G1, G2 to G2073600). The image processing unit 40 is further configured to fill in the corresponding third sub-filling information M3 and fourth sub-filling information M4 after the first sub-filling information group to form the corresponding second sub-display information group ((Gi,M3,M4), 1≤i≤2073600); the image processing unit 40 is also configured to generate the corresponding first sub-display signal (including (R1,M1,M2), (R2,M1,M2) up to (R2073600,M1,M2)) according to the multiple first sub-display information groups, and to generate the corresponding second sub-display signal (including (G1,M3,M4), (G2,M3,M4) up to (G2073600,M3,M4)) according to the multiple second sub-display information groups.
[0096] For ease of illustration, this example uses the case where M1, M2, M3, and M4 all refer to the same sub-filling information M. Figure 9 The illustration shows 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 data processing method. 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 or row first sub-display information groups (to show separation). Similarly, the second sub-display signal and the second display signal can be set.
[0097] In some embodiments, based on Figure 9 The data processing method of the image processing unit 40 shown is as follows: Figure 10 As shown, the first monochrome screen 201 further includes multiple source lines 11 and switching elements 21. The driver 30 is electrically connected to the multiple source lines 11, and each source line 11 is connected to a corresponding plurality of pixels P through the switching element 21; Figure 4 As shown, the plurality of pixels are divided into a plurality of pixel groups (e.g., divided by row), and each pixel group includes a corresponding plurality of pixels (e.g., located in the same row), such as Figure 11 and Figure 12As shown, the opening time period of each pixel group includes a first time period t1, a second time period t2, and a third time period t3; in each first time period t1, the switching element 21 is closed (controlled by the effective pulse of the control signal Con, which can be generated by the switch control module 31 in the driver 30), and the multiple source lines 11 are used to output multiple first sub-display information (including (R(1920*j+1),M,M), (R(1920*j+2),M,M) up to (R(1920*j+1920),M,M), 0≤j≤(total number of rows-1)) or multiple second sub-display information (including (G(1920*j+1),M,M), (G(1920*j+2),M,M) up to (G(1920*j+1),M,M)) from multiple second sub-display information groups corresponding to the pixel group. 920), 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; in each second time period t2 (controlled by the invalid level of the control signal Con), the switch element 21 is turned off, and multiple source lines 11 are used to output multiple first sub-fill information M1 in multiple first sub-display information groups corresponding to the corresponding pixel group or multiple third sub-fill information M3 in multiple second sub-display information groups; in each third time period t3, the switch element 21 is turned off, and multiple source lines 11 are used to output multiple second sub-fill information M2 in multiple first sub-display information groups corresponding to the corresponding pixel group or multiple fourth sub-fill information M4 in multiple second sub-display information groups, the specific output content is determined according to whether the current is the first subframe or the second subframe.
[0098] like Figure 11 and Figure 12As shown, the clock signal CK can include multiple clock pulses p. In the first subframe, each clock pulse p can be used to control multiple pixels P in the corresponding row to turn on, so that multiple source lines 11 transmit multiple data voltages (generated according to the corresponding multiple first sub-display information) to the multiple pixels P in that row. There can be a row blanking period between two adjacent clock pulses p, and so on. In the first black and white screen 201, multiple rows of sub-pixels P are turned on in sequence, and the liquid crystal molecules at the corresponding positions complete the deflection of the corresponding angle (the degree of deflection is related to the corresponding data voltage), so that the whole screen presents the first deflection angle. Similarly, in the second subframe, as multiple rows of pixels P are turned on sequentially, multiple source lines 11 transmit multiple data voltages (generated according to the corresponding multiple second sub-display information) corresponding to the currently turned-on row to multiple pixels P in that row, so that the whole presents the second sub-deflection angle; similarly, in this frame, the second black and white screen 202 can also present the second deflection angle as multiple rows of pixels P are turned on sequentially. However, due to the low refresh rate, the turn-on duration of each row of pixels P can be set to be larger, or the turn-on duration of each row of pixels P can be the same as that of the first black and white screen, but a hold frame is added to maintain the second deflection angle.
[0099] Understandably, to meet the resolution requirements of the driver 30 in the horizontal direction (requiring the original 1920RGB*1080 data volume), in this embodiment, the R1, R2 to R2073600 corresponding to the first subframe can be filled with "(R1, M, M), (R2, M, M), (R3, M, M)……(R2073600, M, M)". Similarly, the G1, G2 to G2073600 corresponding to the second subframe can be filled with "(G1, M, M), (G2, M, M), (G3, M, M)……(G2073600, M, M)". Similarly, the B1, B2 to B2073600 corresponding to the second black-and-white screen 202 in this frame can also be filled with "(B1, M, M), (B2, M, M), (B3, M, M)……(B2073600, M, M)".
[0100] Here, M can correspond to the black insertion voltage. If transmitted to the corresponding pixel P, it will cause the corresponding liquid crystal molecules to undergo ineffective deflection, preventing the sub-rays from passing through this position. Figure 11 and Figure 12 As shown, in this embodiment, since the source line 11 (loaded as data signal Data) will output "Ri or Gi", "M", "M" sequentially within the clock pulse p, in order to avoid M affecting the angle of the corresponding pixel P that has been deflected, the control signal Con is set to be invalid 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.
[0101] Furthermore, such as Figure 12 As shown, regardless of whether it is the first subframe or the second subframe of the first black-and-white screen 201, the duration of the first time period t1 is greater than either the duration of the second time period t2 or the duration of the third time period t3. Since the source line 11 only transmits "Ri or Gi" for controlling the corresponding pixel P to perform effective deflection in the first time period t1, setting the duration of the first time period t1 to be larger allows the corresponding data voltage to be fully loaded to the corresponding pixel P; similarly, the three corresponding sub-time periods in the second black-and-white screen 202 can also refer to this setting.
[0102] In other embodiments, based on Figure 9 The data processing method of the image processing unit 40 shown is as follows: Figure 13 As shown, the first monochrome screen 201 further includes multiple source lines 11, and the driver 30 is electrically connected to the corresponding multiple pixels P through the corresponding source lines 11; as Figure 17 As shown, each pixel group P has a corresponding closing period (i.e., the aforementioned row blanking period) after its opening period. Each closing period includes a fourth period t4 and a fifth period t5. During the opening period of each pixel group (corresponding to clock pulse p), multiple source lines 11 are used to output multiple first sub-display information (including (R(1920*j+1),M,M), (R(1920*j+2),M,M) up to (R(1920*j+1920),M,M), 0≤j≤(total number of rows-1)) from multiple first sub-display information groups corresponding to the pixel group, or multiple second sub-display information (including (G(1920*j+1),M,M), (G(1920*j+2),M,M) up to (R(1920*j+1920),M,M), 0≤j≤(total number of rows-1)) from multiple second sub-display information groups. 0*j+2),M,M) up to (G(1920*j+1920),M,M), 0≤j≤(total number of rows-1)); In each of the fourth time periods t4, the multiple source lines 11 are used to output multiple first sub-fill information M1 (e.g., M) in the multiple first sub-display information groups corresponding to the corresponding pixel group or multiple third sub-fill information M3 (e.g., M) in the multiple second sub-display information groups corresponding to the corresponding pixel group; In each of the fifth time periods t5, the multiple source lines 11 are used to output multiple second sub-fill information M2 (e.g., M) in the multiple first sub-display information groups corresponding to the corresponding pixel group or multiple fourth sub-fill information M4 (e.g., M) in the multiple second sub-display information groups corresponding to the corresponding pixel group.
[0103] and Figures 10 to 12 The difference in the embodiments described is that, in this embodiment (in conjunction with...) Figure 13 and Figure 14Since no switching element 21 is provided in the input, the "Ri or Gi", "M", and "M" signals sequentially output from the source line 11 (loaded as data signal Data) will all be input to the corresponding pixel P. When M corresponds to the black insertion voltage, the driver 30 can be controlled to output the two black insertion voltages corresponding to "M" and "M" only during the off period of pixel group P, so as to avoid pixel P being affected by the black insertion voltage. In particular, since the on period of pixel group P is only used to output "Ri or Gi" at this time, in order 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 large enough, which can be equal to the pulse width of the clock pulse p.
[0104] Of course, the M1 and M2 filled after each first sub-display information (R1, R2 to R2073600) can be the same as the corresponding first sub-display information, which is different from the case here. Figure 11 and Figure 12 As shown, the control signal Con can be set to be a valid pulse within the clock pulse p, so that the first sub-display information, M1, and M2, sequentially output by the source line 11 are all transmitted to the corresponding pixel P. In this case, the switching element 21 can be omitted, that is, the source line 11 and the corresponding multiple pixels P can be electrically connected. Similarly, the second sub-display signal and the second display signal can also be set in the same way.
[0105] In some embodiments, combined with Figures 5 to 8 , Figure 15 As shown, 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 also used to arrange the plurality of first sub-display information to form a plurality of corresponding 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 plurality of corresponding second sub-display information groups (each of which is (Gi, G(i+1))). The image processing unit 40 is further configured to generate corresponding first sub-display signals (including (R1,R2,R3), (R4,R5,R6) up to (R2073658,R2073659,R2073600)) based on a plurality of first sub-display information groups, and to generate corresponding second sub-display signals (including (G1,G2,G3), (G4,G5,G6) up to (G2073658,G2073659,G2073600)) based on a plurality of second sub-display information groups.
[0106] Figure 15The illustration shows the specific content of the first sub-display signal and the second sub-display signal formed by the image processing unit 40 using the above data processing method. 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 or row-adjacent first sub-display information groups (to indicate separation). Similarly, the second sub-display signal and the second display signal can be set.
[0107] In other embodiments, combined with Figures 5 to 8 , Figure 16 As shown, based on the existing formation of multiple first sub-display information groups (each of which is (Ri, R(i+1), R(i+2)), 1≤i≤2073600-2) and multiple 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 multiple first sub-display information groups into multiple first information groups corresponding to multiple pixel groups (e.g., corresponding to multiple rows of pixels P). 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),R(1920*j+6)] up to [R(1920*j+1918),R(1920*j+1919),R(1920*j+1920)], 0≤j≤(total number of rows-1)), and dividing the multiple second sub-display information groups into multiple pixels. Multiple second information groups of the group ([G(1920*j+1),G(1920*j+2),G(1920*j+3)],[G(1920*j+4),G(1920*j+5),G(1920*j+6)] up 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 configured to, in each of the first information groups The image processing unit 40 is further configured to generate a corresponding first sub-display signal based on the plurality of the third information groups, and to generate a corresponding second sub-display signal based on the plurality of the fourth information groups.
[0108] For ease of illustration, this example uses the case where M1 and M2 are both the same sub-filling information M. Figure 16The illustration shows 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 data processing method. 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 or row first sub-display information groups (to show separation). Similarly, the second sub-display signal and the second display signal can be set.
[0109] Figure 16 and Figure 15 The difference between the first sub-display signal and the second display signal is that the former fills the first information group (with twice the data size of the first information group) after the first information group corresponding to each row of sub-pixels, so that the data size of the third information group after filling (three times the data size of the first information group) is equal to the data size of 1920RGB. The third information group can 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)] up to [R(1920*j+1918),R(1920*j+1919),R(1920*j+1920)]+(920*2) M1s". The second sub-display signal and the second display signal can be set in the same way, although the data filling method is different. Figure 9 Although there are differences, the final first sub-display signal has a data volume of 1920RGB, which can similarly meet the resolution requirements of driver 30 in the horizontal direction.
[0110] In some embodiments, based on Figure 15 and Figure 16 The data processing method of the image processing unit 40 shown is referenced. Figure 13 As shown, the first monochrome screen 201 further includes multiple source lines 11, and the driver 30 is electrically connected to the corresponding multiple pixels P through the corresponding source lines 11; as Figure 4 As shown, 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 Figure 17 As shown, during the on-time of each pixel group (corresponding to clock pulse p), multiple source lines 11 are used to output multiple first sub-display information groups (i.e., corresponding first information groups) or multiple second sub-display information groups (i.e., corresponding second information groups) corresponding to the pixel group.
[0111] for Figure 15Regarding the data processing method of the image processing unit 40 shown, since M is not padded after each "Ri or Gi", during the on-time of each pixel group (corresponding to clock pulse p), each source line 11 (loaded as data signal Data) only outputs the data voltage corresponding to "Ri or Gi". Multiple source lines 11 output the first information group (outputting R(1920*j+1), R(1920*j+2), R(1920*j+3)] up to R(1920*j+1920)] or the second information group (outputting G(1920*j+1920)] respectively) 1) G(1920*j+2), G(1920*j+3)] up to G(1920*j+1920)]) corresponding to multiple data voltages. Similarly, in order to improve the charging effect of pixel P, the time period used to output the data voltage corresponding to "Ri or Gi" can be set large enough, and the maximum can be equal to the pulse width of the clock pulse p; and so on, multiple pixels P as a whole present the first sub-deflection angle in the first sub-frame and the second sub-deflection angle in the second sub-frame. 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.
[0112] Figure 16 Compared to Figure 15 In this regard, although a first padding information group is filled after each first information group to form a third information group, the driver 30 can select only a few of the first information groups in the first subframe to control each source line 11 to output only the corresponding Ri data voltage during the on-time of the corresponding pixel P. Similarly, the driver 30 controls each source line 11 to output only the corresponding Gi data voltage during the on-time of the corresponding pixel P in the second subframe. 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.
[0113] This invention also provides a driving method for a display device, in conjunction with the above description regarding... Figure 1 The display device 100 includes the aforementioned display carrier 10, the aforementioned first black-and-white screen 201, the aforementioned second black-and-white screen 202, the aforementioned first light source 301, and the aforementioned second light source 302. The first display signal includes the aforementioned first sub-display signal and the aforementioned second sub-display signal. The first light includes the aforementioned first sub-light and the aforementioned second sub-light of different colors. The first deflection angle includes the aforementioned first sub-deflection angle and the aforementioned second sub-deflection angle. A frame includes the aforementioned first sub-frame and the aforementioned second frame, such as... Figure 18 As shown, the method includes, but is not limited to, the following steps and combinations thereof.
[0114] S1, control 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 control the first light source to project the first sub-light beam passing through the first black and white screen in the first sub-frame to display the first sub-image on the display carrier.
[0115] The relevant technical features can be referred to in the above description. The execution subject of "controlling the first black and white screen to present the first sub-deflection angle according to the first sub-display signal in the first sub-frame" can be, but is not limited to, the driver 30 mentioned above. The first sub-display signal can be generated by the image processing unit 40 mentioned above. The execution subject of "controlling the first light source to project the first sub-light beam through the first black and white screen in the first sub-frame" can be, but is not limited to, the light source control module 60 mentioned above.
[0116] S2, control 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 control the first light source to project the second sub-light rays passing through the first black and white screen in the second sub-frame to display the second sub-image on the display carrier, the first image including the first sub-image and the second sub-image.
[0117] Similarly, the relevant technical features can be referred to in the above description. The execution subject of "controlling the first black and white screen to present the second sub-deflection angle according to the second sub-display signal in the second sub-frame" can be, but is not limited to, the driver 30 mentioned above. The second sub-display signal can be generated by the image processing unit 40 mentioned above. The execution subject of "controlling the first light source to project the second sub-light beam through the first black and white screen in the second sub-frame" can be, but is not limited to, the light source control module 60 mentioned above.
[0118] S3, control the second black and white screen to present a second deflection angle in the frame according to the second display signal, and control the second light source to project a third sub-light beam through the second black and white screen in the frame to display a second image on the display carrier. The color of the first light beam is different from the color of the second light beam. The first image and the second image make the display carrier present the target image. The frames of the first black and white screen and the frames of the second black and white screen are synchronized.
[0119] Similarly, the relevant technical features can be referred to in the relevant description above. The execution subject of "controlling the second black and white screen to present a second deflection angle in the frame according to the second display signal" can be, but is not limited to, the driver 30 mentioned above. The second display signal can be generated by the image processing unit 40 mentioned above. The execution subject of "controlling the second light source to project a third sub-ray through the second black and white screen in the frame" can be, but is not limited to, the light source control module 60 mentioned above.
[0120] This invention provides a display device and its driving method. By setting a first black-and-white screen for presenting a first deflection angle according to a first display signal and a second black-and-white screen for presenting a second deflection angle according to a second display signal, a frame includes a first sub-frame and a second sub-frame. In the first 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, a first sub-light source projects a first sub-ray through the first black-and-white screen to display a first sub-image on the display carrier. In the second sub-frame, the first black-and-white screen presents the second sub-deflection angle according to the second sub-display signal. In the second sub-frame, a second sub-light source projects a second sub-ray through the first black-and-white screen to display a second sub-image on the display carrier. The second light source projects a third sub-ray (different in color from the first and second sub-rays) through the second black-and-white screen to display a second image on the display carrier. The first sub-image, the second sub-image, and the second image together constitute a target image of a frame, thus balancing the small size and high brightness of the display device.
[0121] The display device and its driving method provided in the embodiments of the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of the present invention. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions 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 invention.
Claims
1. A display device, characterized in that, include: Display carrier; The first black-and-white screen is used to receive the first display signal; The second black-and-white screen is used to receive the second display signal; A first light source is used to project a first light ray through the first black and white screen and, in conjunction with the first display signal, to display a first image on the display carrier; The second light source is used to project a second light beam through the second black-and-white screen and, in conjunction with the second display signal, to display a second image on the display carrier. The first image and the second image are combined on the display carrier to present a target image. Wherein, 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 ray includes a third sub-ray, the color of which is different from either the color of the first sub-ray or the color of the second ray; One frame includes a first subframe and a second subframe. The first black and white screen is used to receive the first sub-display signal in the first subframe and the second sub-display signal in the second subframe. Wherein, the first light source is used to project the first sub-light beam 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-image on the display carrier, and is also used to project the second sub-light beam 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-image on the display carrier, wherein the first image includes the first sub-image and the second sub-image; The first subframe includes a first sub-scanning period and a first sub-emission period following the first sub-scanning period; the second subframe includes a second sub-scanning period and a second sub-emission period following the second sub-scanning period. The first black-and-white screen is used to receive the first sub-display signal during the first sub-scanning period and to receive the second sub-display signal during the second sub-scanning period; The first light source is used to project the first sub-light beam through the first black-and-white screen during the first sub-light emission period to display the first sub-image on the display carrier, and is used to project the second sub-light beam through the second black-and-white screen during the second sub-light emission period to display the second sub-image on the display carrier.
2. The display device according to claim 1, characterized in that, The second black-and-white screen is used to receive the second display signal in the frame, and the frames of the first black-and-white screen and the frames of the second black-and-white screen are synchronized. The second light source is used to project the third sub-ray through the second black-and-white screen onto the frame, and in conjunction with the second display signal, to display the second image on the display carrier.
3. The display device according to claim 2, characterized in that, The number of pixels in the first black-and-white screen used to display the first sub-image by the first sub-display signal, the number of pixels used to display the second sub-image by the second sub-display signal, and the number of pixels in the second black-and-white screen used to display the second image by the second display signal are all equal.
4. The display device according to claim 2, characterized in that, Also includes: An image processing unit is configured to acquire an initial display signal and generate a first display signal corresponding to the first black-and-white screen and a second display signal corresponding to the second black-and-white screen based on the initial display signal. The first monochrome screen includes multiple pixels and a driver electrically connected to the multiple pixels; The driver is used to obtain multiple first sub-display information of multiple pixels corresponding to the first sub-ray from the first sub-display signal, and to obtain multiple second sub-display information of multiple pixels corresponding to the second sub-ray from the second sub-display signal.
5. The display device according to claim 4, characterized in that, The image processing unit is used to parse 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 fill in 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 in 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 a corresponding first sub-display signal based on a plurality of first sub-display information groups, and to generate a corresponding second sub-display signal based on a plurality of second sub-display information groups.
6. The display device according to claim 5, characterized in that, The first monochrome screen also includes multiple source lines and switching elements. The driver is electrically connected to the multiple source lines, and each source line is connected to a corresponding plurality of pixels through the switching elements. The plurality of pixels are divided into a plurality of pixel groups, each pixel group includes a corresponding plurality of pixels, and the activation time period of each pixel group includes a first time period, a second time period and a third time period; During each of the first time periods, the switching element is closed, and the multiple source lines are used to output multiple first sub-display information from multiple first sub-display information groups corresponding to the corresponding pixel group or multiple second sub-display information from multiple second sub-display information groups. During each of the second time periods, the switching element is turned off, and the multiple source lines are used to output multiple first sub-fill information in multiple first sub-display information groups corresponding to the corresponding pixel group or multiple third sub-fill information in multiple second sub-display information groups. During each of the third time periods, the switching element is turned off, and the multiple source lines are used to output multiple second sub-fill information from the multiple first sub-display information groups corresponding to the corresponding pixel group, or multiple fourth sub-fill information from the multiple second sub-display information groups.
7. The display device according to claim 6, characterized in that, The duration of the first time period is greater than the duration of the second time period or the duration of the third time period.
8. The display device according to claim 5, characterized in that, The first monochrome screen also includes multiple source lines, and the driver is electrically connected to the corresponding multiple pixels through the corresponding source lines; The plurality of pixels are divided into a plurality of pixel groups, each pixel group includes a corresponding plurality of pixels, and each pixel group has a corresponding closing period after the opening period, each closing period including a fourth period and a fifth period; During the activation period of each pixel group, the multiple source lines are used to output multiple first sub-display information in multiple first sub-display information groups corresponding to the pixel group or multiple second sub-display information in multiple second sub-display information groups corresponding to the pixel group. In each of the fourth time periods, the multiple source lines are used to output multiple first sub-fill information in multiple first sub-display information groups corresponding to the corresponding pixel group or multiple third sub-fill information in multiple second sub-display information groups. In each of the fifth time periods, the multiple source lines are used to output multiple second sub-fill information in the multiple first sub-display information groups corresponding to the corresponding pixel group, or multiple fourth sub-fill information in the multiple second sub-display information groups.
9. The display device according to claim 4, characterized in that, The image processing unit is used to parse the initial display signal to form multiple first sub-display information and multiple second sub-display information; The image processing unit is further configured to arrange multiple first sub-display information to form a corresponding multiple first sub-display information group, and to arrange multiple second sub-display information to form a corresponding multiple second sub-display information group; The image processing unit is further configured to generate a corresponding first sub-display signal based on a plurality of first sub-display information groups, and to generate a corresponding second sub-display signal based on a plurality of second sub-display information groups.
10. The display device according to claim 9, characterized in that, The plurality of pixels are divided into a plurality of pixel groups, and each pixel group 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 a corresponding first filling information group after each first information group to form a corresponding third information group, and to fill a corresponding second filling information group after each second information group to form a corresponding fourth information group. The image processing unit is further configured to generate a corresponding first sub-display signal based on a plurality of the third information groups, and to generate a corresponding second sub-display signal based on a plurality of the fourth information groups.
11. The display device according to claim 9 or 10, characterized in that, The first monochrome screen also includes multiple source lines, and the driver is electrically connected to the corresponding multiple pixels through the corresponding source lines; The plurality of pixels are divided into a plurality of pixel groups, and each pixel group includes a corresponding plurality of pixels; During the activation period of each pixel group, the multiple source lines are used to output multiple first sub-display information groups or multiple second sub-display information groups corresponding to the pixel group.
12. The display device according to claim 4, characterized in that, 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, to project 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.
13. The display device according to claim 2, characterized in that, The second ray also includes a fourth sub-ray, the color of which is the same as the color of the first sub-ray or the color of the second sub-ray; The second light source is used to project the third sub-ray through the second black-and-white screen in the first sub-frame, and to project the fourth sub-ray through the second black-and-white screen in the corresponding second sub-frame.
14. A driving method for a display device, characterized in that, 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 projects a first ray, which includes a first sub-ray and a second sub-ray of different colors. The second light source projects a second ray, which includes a third sub-ray. The color of the third sub-ray is different from either the color of the first sub-ray or the color of the second sub-ray. A frame includes a first sub-frame and a second frame. The method includes: In the first subframe, the first black-and-white screen is controlled to receive the first sub-display signal in the first display signal, and the first light source is controlled to project the first sub-light beam passing through the first black-and-white screen to display the first sub-image on the display carrier; In the second subframe, the first black-and-white screen is controlled to receive the second sub-display signal in the first display signal, and the first light source is controlled to project the second sub-light beam through the first black-and-white screen to display the second sub-image on the display carrier. The first sub-image and the second sub-image are combined on the display carrier to present the first image. Within the frame, the second black-and-white screen is controlled to receive the second display signal, and the second light source is controlled to project a third sub-ray through the second black-and-white screen to display the second image on the display carrier. The first image and the second image are combined on the display carrier to present the target image. The frames of the first black-and-white screen and the frames of the second black-and-white screen are synchronized. The first subframe includes a first sub-scanning period and a first sub-emission period following the first sub-scanning period; the second subframe includes a second sub-scanning period and a second sub-emission period following the second sub-scanning period. The step of controlling the first black-and-white screen to receive the first sub-display signal in the first display signal and controlling the first light source to project the first sub-light beam passing through the first black-and-white screen to display the first sub-image on the display carrier in the first sub-frame includes: During the first sub-scanning period, the first black-and-white screen is controlled to receive the first sub-display signal; During the first sub-light emission period, the first light source is controlled to project the first sub-light beam through the first black and white screen to display the first sub-image on the display carrier; The steps described above, in the second sub-frame, include controlling the first black-and-white screen to receive the second sub-display signal from the first display signal, and controlling the first light source to project the second sub-light beam passing through the first black-and-white screen to display the second sub-image on the display carrier, wherein the first sub-image and the second sub-image are combined on the display carrier to present a first image, comprising: During the second sub-scanning period, the first black-and-white screen is controlled to receive the second sub-display signal; During the second sub-light emission period, the first light source is controlled to project the second sub-light beam through the second black-and-white screen to display the second sub-image on the display carrier.
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