A multi-view display device and display control method

Abstract

A multi-view display device and a display control method are provided. The multi-view display device has multiple display views and includes multiple logic boards (102). Each logic board (102) corresponds to a display view and is used to process and transmit image data corresponding to the display view. The logic boards (102) corresponding to different display views are independently driven and controlled. Since the logic boards (102) corresponding to different display views are independently driven and controlled, each logic board (102) can be driven and controlled according to actual display requirements, which helps to improve the flexibility of use.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and in particular to a multi-view display device and a display control method. Background Technology

[0002] A multi-view display device refers to a display device that allows different content to be observed when viewed from different angles. Multi-view display devices can simultaneously display multiple identical or different contents through a single display device, thereby meeting diverse display needs. Summary of the Invention

[0003] Some aspects of this disclosure provide a multi-view display device having multiple display views. The multi-view display device includes multiple logic boards, each corresponding to one of the display views. The logic boards are used to process and transmit image data corresponding to the display views, and are independently driven and controlled by the logic boards corresponding to different display views.

[0004] This disclosure also provides a display control method applied to the multi-view display device described in some aspects of this disclosure, the display control method comprising the following steps:

[0005] The image processor of the display device renders image data corresponding to different display viewing angles separately;

[0006] The image processor sends the rendered image data to the logic board corresponding to each of the display viewpoints;

[0007] The logic board generates control data based on the received image data and sends the control data to the driver chip;

[0008] The driver chip controls the display panel to display images based on the control data.

[0009] In some embodiments, before the image processor renders image data corresponding to different display viewpoints, it further includes:

[0010] Obtain the trigger conditions for multi-view display;

[0011] If there is more than one triggering condition, determine the priority of each triggering condition;

[0012] The image rendering rules are determined based on the priority of the triggering conditions.

[0013] In some embodiments, the parameters for determining the triggering condition include one or more of the following: object tracking result, two-dimensional / three-dimensional display mode, control coordinates, touch detection, and image update area.

[0014] In some embodiments, the driver chip controls the display panel to display an image according to the control data, including:

[0015] The driver chip receives control data corresponding to each display viewing angle sent by the logic board;

[0016] The control data corresponding to the same pixel are arranged in a preset viewing angle order to obtain pixel control data corresponding to each pixel.

[0017] In some embodiments, before the image processor renders image data corresponding to different display viewpoints, it further includes:

[0018] Determine the first display view from the plurality of display views from which the image does not need to be displayed;

[0019] The first logic board corresponding to the first display viewpoint is controlled to be in a low-power state.

[0020] In some embodiments, arranging the control data corresponding to the same pixel according to a preset viewing angle order includes:

[0021] The pixel control data and the data corresponding to the first display viewpoint are filled with blank data.

[0022] In some embodiments, after controlling the first logic board corresponding to the first display viewing angle to be in a low-power state, the method further includes:

[0023] The circuit in the driver chip corresponding to the first logic board is controlled to be in a low-power state.

[0024] In some embodiments, before the image processor renders image data corresponding to different display viewpoints, it further includes:

[0025] Determine a first display view that does not need to display an image and a second display view that needs to display an image among the plurality of display viewpoints;

[0026] The first sub-data is processed by the first logic board corresponding to the first display viewpoint to obtain the first control sub-signal, and the second sub-data is processed by the second logic board corresponding to the second display viewpoint to obtain the second control sub-signal. The first sub-data and the second sub-data are both data in the image data corresponding to the second display viewpoint, and the first sub-data and the second sub-data are different.

[0027] In some embodiments, the driver chip controls the display panel to display an image according to the control data, including:

[0028] In the driver chip, the first control sub-signal and the second control signal are sorted according to the correspondence between the first sub-data and the second sub-data and the image data;

[0029] The display panel is controlled to display images according to the sorted first and second control sub-signals. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of a multi-view display device in some embodiments of this disclosure;

[0032] Figure 2 This is a flowchart showing the control method in some embodiments of this disclosure;

[0033] Figure 3 This is a schematic diagram of data arrangement in some embodiments of this disclosure;

[0034] Figure 4 This is a schematic diagram of the structure of a logic board in some embodiments of this disclosure;

[0035] Figure 5 This is yet another schematic diagram of data arrangement in some embodiments of this disclosure. Detailed Implementation

[0036] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0037] Some aspects of this disclosure provide a multi-view display device.

[0038] like Figure 1As shown, in some embodiments, the multi-view display device includes a graphics processing unit (GPU) 101, a logic board (Tcon1 to Tcon8) 102, a driver chip (Driver IC1 to Driver IC8) 103, and a display panel 104. It should be understood that each logic board 102 is electrically connected to each driver chip 103. In this embodiment, only the connection lines between one logic board Tcon1 and each driver chip (Driver IC1 to Driver IC8) 103 are shown as an example, and the connection lines between other logic boards and driver chips 103 are omitted.

[0039] A multi-view display device has multiple display angles, which can be understood as the image observed when viewing the device from different angles being different. The multi-view display device includes multiple logic boards (Tcon1 to Tcon8) 102, each logic board 102 corresponding to a display angle, and the logic board 102 is used to process and transmit image data corresponding to the display angle.

[0040] For example, if the display panel 104 in the display device supports LVDS (Low Voltage Differential Signaling) signals, and the image data input to the logic board 102 may include data signals of different color pixels, clock signals, and control signals, then the logic board 102 can convert the input signals into LVDS signals and further control the display panel 104 to display the image. Clearly, when the image format supported by the display panel 104 changes, the logic board 102 can also adaptively adjust its image data processing and transmission procedures accordingly.

[0041] The independent drive control of the logic board 102 corresponding to different display viewing angles can be understood as the independent control of the power supply and signal transmission of different logic boards 102. In this way, the independent power supply and signal transmission of each logic board 102 can be controlled as needed.

[0042] In this embodiment, since the logic boards 102 corresponding to different display viewing angles are driven and controlled independently, each logic board can be driven and controlled according to actual display requirements, which helps to improve the flexibility of use.

[0043] like Figure 1 As shown, in some embodiments, a GPU synchronization board (GPU Sync) 105 can also be set up. The GPU synchronization board is used to realize the synchronization of GPU image rendering data. When the GPU's computing power is large, the GPU synchronization board can be used to realize the synchronization of rendered image data, which helps to improve the transmission effect of image data.

[0044] Some aspects of this disclosure also provide a display control method.

[0045] This display control method is applied to the aforementioned multi-view display devices, such as... Figure 2 As shown, in some embodiments, the display control method includes the following steps:

[0046] Step 201: The image processor of the display device renders the image data corresponding to different display viewing angles.

[0047] Step 202: The image processor sends the rendered image data to the logic board corresponding to each of the display viewpoints.

[0048] Step 203: The logic board generates control data based on the received image data and sends the control data to the driver chip;

[0049] Step 204: The driver chip controls the display panel to display images according to the control data.

[0050] In this embodiment, the display device further includes an image processor, and the GPU is used to render the images to be displayed. In practice, the GPU is used to render the images to be displayed from different viewpoints.

[0051] Taking a display device with eight viewing angles as an example, when images need to be displayed from these eight viewing angles, the GPU renders the image data of eight images corresponding to these eight viewing angles. The rendered image data is sent to each logic board, which further processes and transmits the image data, converting the rendered image data into control signals and sending them to the driver chip. The driver chip controls the display panel to display images according to the received control signals, thereby realizing multi-view image display.

[0052] In some embodiments, step 204 includes:

[0053] The driver chip receives control data corresponding to each display viewing angle sent by the logic board;

[0054] The control data corresponding to the same pixel are arranged in a preset viewing angle order to obtain pixel control data corresponding to each pixel.

[0055] Taking a multi-view display device comprising a total of M pixels as an example, each driver chip receives image data for each display viewpoint sent by each logic board, which includes pixel control data for M pixels.

[0056] like Figure 3As shown, the control data of the M pixels included in the nth display view are denoted as View_n-pixel1~M. Thus, when the multi-view display device includes 8 display views, the control data received by each driver chip includes: View_1-pixel_1~M, View2-pixel_1~M, View_3-pixel_1~M, View_4-pixel_1~M, View_5-pixel_1~M, View_6-pixel_1~M, View_7-pixel_1~M, and View_8-pixel_1~M.

[0057] Please continue reading. Figure 3 Next, the control data is reordered. It should be understood that the data to be displayed by the m-th pixel out of the M pixels in the multi-view display device includes the pixel control data corresponding to the m-th pixels of the 8 display views. In this embodiment, the pixel control data corresponding to the m-th pixels of the 8 display views are respectively denoted as View_1-pixel_m, View_2-pixel_m, ..., View_8-pixel_m. Further, they are uniformly denoted as pixel_m-View_1~8. Thus, after reordering the control data of the 8 display views according to pixels, the result is pixel_1-View_1~8, pixel_2-View_1~8, ..., pixel_M-View1~8.

[0058] In this way, the pixel control data that each pixel needs to be displayed is obtained. When displaying the image, by controlling the m-th pixel to display the 8 pixel control data contained in pixel_m-View_1 to 8 in sequence, the image of 8 display perspectives can be displayed.

[0059] It should be understood that the display order of the images corresponding to the 8 display viewpoints can be arranged according to the preset viewpoint arrangement order. Accordingly, the arrangement order of each pixel and the 8 pixel control data corresponding to the 8 display viewpoints can be adjusted.

[0060] In some embodiments, the method further includes the following step prior to step 201:

[0061] Obtain the trigger conditions for multi-view display;

[0062] If there is more than one triggering condition, determine the priority of each triggering condition;

[0063] The image rendering rules are determined based on the priority of the triggering conditions.

[0064] In some embodiments, the triggering condition refers to the condition that triggers multi-view display. Depending on the situation, the rendering mode can be adjusted accordingly when using the GPU to render the image.

[0065] like Figure 4 As shown, in some embodiments, the parameters for determining the triggering condition include one or more of the following: object tracking result, two-dimensional / three-dimensional display mode, control coordinates, touch detection, and image update area.

[0066] Object tracking results refer to the tracking results of objects observing the multi-view display device. For example, this can be achieved through tracking people or tracking people's eyes (Eye tracing). For instance, in some embodiments, when a person or eye is detected in the direction corresponding to a certain display viewpoint of the multi-view display device, the display viewpoint is controlled to display an image, or the display viewpoint is controlled to display an image at a high quality. If no person or eye is detected in the direction corresponding to a certain display viewpoint of the multi-view display device, it can be assumed that there is no user in that direction or that the user is relatively far from the multi-view display device. In this case, the display viewpoint can be controlled not to display an image, and the GPU can choose not to render the image corresponding to that display viewpoint, or it can be controlled to display the image at a relatively low quality, thereby reducing the GPU's image rendering load.

[0067] The 2D / 3D display mode refers to whether the multi-view display device selects a 3D display mode or a 3D selection mode. When the display device displays an image in 2D or 3D display mode, the corresponding image rendering method can be selected accordingly.

[0068] Control coordinates refer to the coordinates of the location where operations are performed on a multi-view display device. For example, if a mouse is used as the input control device for a multi-view display device, then the control coordinates refer to the mouse coordinates. By determining the control coordinates, the direction of the control operation can be identified. This can be understood as the user performing a control operation from that direction. Correspondingly, the display angle can be controlled to display an image, while other display angles can be kept from displaying an image. Alternatively, a high-quality image can be displayed from one view angle, while other view angles can be controlled to display a low-quality image. Consequently, the GPU's image rendering mode for different view angles can be adjusted, helping to reduce the GPU load.

[0069] Touch detection refers to the detection results of touch operations. By detecting the location of the touch operation, the user's direction can also be determined, and the GPU's image rendering rules can be further adjusted.

[0070] An image update region refers to the area of ​​the image displayed by the display device where there is an update. For example, when the image displayed at one display viewpoint is updated, while the image displayed at another display viewpoint is not updated, the GPU's computing resources can be allocated reasonably to increase its computing resources for the updated image, which helps to improve the rendering effect of the image and thus improve the display effect.

[0071] Priority refers to determining the image rendering rules based on the priority of the triggering conditions mentioned above. For example, in one embodiment, the priorities of object tracking results, 2D / 3D display mode, control coordinates, touch detection, and image update area are defined in descending order. When an object tracking result is detected, the GPU's image rendering procedure is set based on the object tracking result. For example, if there is no object tracking result or 2D / 3D display mode, but there is a control coordinate detection result, the corresponding image rendering procedure is set based on the regulation corresponding to the control coordinate.

[0072] By setting the priority of different trigger conditions, different image rendering modes can be set, which helps to improve the rendering effect of images under different conditions.

[0073] Please also refer to Figure 1 and Figure 4 The control process in this embodiment can be summarized as follows: First, the triggering conditions are determined, and the image rendering rules are determined according to the triggering conditions. The GPU performs image rendering according to the image rendering rules. Next, the rendered image data is sent to the logic board. The logic board generates control data according to the image rendering data and sends the control data to the driver chip to drive the display panel to display the image.

[0074] In this embodiment, a GPU synchronization board can also be set up as needed. This GPU synchronization board is used to synchronize GPU signals.

[0075] The logic board is used to provide synchronization control signals to the timing processing unit. Specifically, the logic board can provide synchronization control signals such as valid data strobe signal DE, horizontal synchronization signal HSync, and vertical synchronization signal VSync. Furthermore, the timing processing unit generates corresponding timing signals, and the coordinate processing unit generates corresponding coordinate control signals, thereby realizing the synchronization control of the signals.

[0076] It should be understood that the coordinate processing unit and timing processing unit mentioned above can be set up independently of the logic board, or they can be integrated into the logic board. No further limitations are made here.

[0077] The timing signals specifically include GOA timing signals for GOA (array substrate row drive) timing control, MUX timing signals for multiple display viewing angle (MUX) timing control, and synchronization signals, etc.

[0078] In some embodiments, the method further includes the following step prior to step 201:

[0079] Determine the first display view from the plurality of display views from which the image does not need to be displayed;

[0080] The first logic board corresponding to the first display viewpoint is controlled to be in a low-power state.

[0081] In this embodiment, the first display viewpoint refers to the display viewpoint that does not need to display an image. For example, the multi-view display device includes a total of 8 display views from viewpoint 1 to viewpoint 8. Among them, viewpoint 1, viewpoint 3, viewpoint 5, and viewpoint 7 need to display images, while viewpoint 2, viewpoint 4, viewpoint 6, and viewpoint 8 do not need to display images. Therefore, viewpoint 2, viewpoint 4, viewpoint 6, and viewpoint 8 are the first display views.

[0082] In some embodiments, a low-power state can be achieved by disconnecting the power supply to the first logic board, or by controlling the first logic board to enter a sleep state and suspending data transmission and processing on the first logic board.

[0083] When a first display view exists, since each logic board is driven independently, the power consumption of the multi-view display device can be reduced by controlling the first logic board corresponding to the first display view to be in a low-power state.

[0084] In some embodiments, after controlling the first logic board corresponding to the first display viewing angle to be in a low-power state, the method further includes:

[0085] The circuit in the driver chip corresponding to the first logic board is controlled to be in a low-power state.

[0086] Since each driver chip is connected to each logic board, and each driver chip includes circuitry dedicated to processing data from each logic board, it can be understood that a portion of the circuitry is only used to process data from a specific logic board and not to process data from other logic boards. In some embodiments, these circuits corresponding to the first logic board are further controlled to be in a low-power state. For example, this can be achieved by turning off the operational amplifiers (OPs) corresponding to this portion of the circuitry, thereby reducing the power consumption of the multi-view display device.

[0087] In some embodiments, before the image processor renders image data corresponding to different display viewpoints, it further includes:

[0088] Determine a first display view that does not need to display an image and a second display view that needs to display an image among the plurality of display viewpoints;

[0089] The first sub-data is processed by the first logic board corresponding to the first display viewpoint to obtain the first control sub-signal, and the second sub-data is processed by the second logic board corresponding to the second display viewpoint to obtain the second control sub-signal. The first sub-data and the second sub-data are both data in the image data corresponding to the second display viewpoint, and the first sub-data and the second sub-data are different.

[0090] This can be understood as follows: when there is a first display view that does not need to display an image, the computing resources provided by the first logic board corresponding to the first display view are used to process and transmit data for the second display view that needs to display an image.

[0091] In some embodiments, viewpoint 1 is a first display viewpoint where no image needs to be displayed, and viewpoint 2 is a second display viewpoint where an image needs to be displayed. Then, the logic board corresponding to viewpoint 1 is used to process the image processing of viewpoint 2.

[0092] like Figure 5 As shown, for example, odd-numbered rows of data in the image data corresponding to the second display view are defined as first sub-data, and even-numbered rows of data are defined as second sub-data. In practice, the second sub-data is processed by the second logic board Tcon2 corresponding to the second display view to obtain the second control sub-signal, and the first sub-data is processed by the first logic board Tcon1 corresponding to the first display view to obtain the first control sub-signal. In this way, the load on the second logic board Tcon2 is reduced, which helps to improve the processing and transmission speed of image data.

[0093] In some embodiments, the driver chip controls the display panel to display an image according to the control data, including:

[0094] In the driver chip, the first control sub-signal and the second control signal are sorted according to the correspondence between the first sub-data and the second sub-data and the image data;

[0095] The display panel is controlled to display images according to the sorted first and second control sub-signals.

[0096] In some embodiments, the data is first rearranged in the GPU. For example, the image corresponding to the second display viewpoint is divided into first sub-data and second sub-data. Then, the images corresponding to the first sub-data and second sub-data are rendered respectively. Then, the rendered first sub-data and second sub-data are sent to the corresponding first logic board Tcon1 and second logic board Tcon2 respectively.

[0097] After the first logic board Tcon1 and the second logic board Tcon2 process the first sub-data and the second sub-data respectively, they obtain the first control sub-signal and the second control sub-signal. The first control sub-signal corresponds to the control data in the odd-numbered rows, and the second control sub-signal corresponds to the control data in the even-numbered rows.

[0098] Next, in the driver chip, the first control sub-signal and the second control sub-signal are sorted to restore their correspondence with the original image data. In this way, when the driver chip drives the display panel according to the first control sub-signal and the second control sub-signal, it can display the image corresponding to the original second display viewpoint.

[0099] Tests have shown that in some implementations, the display refresh rate can be increased by about 20%, which can effectively improve the display effect.

[0100] In some embodiments, arranging the control data corresponding to the same pixel according to a preset viewing angle order includes:

[0101] The pixel control data and the data corresponding to the first display viewpoint are filled with blank data.

[0102] The pixel control data corresponding to the m-th pixel are denoted as View_1-pixel_m, View_2-pixel_m, ..., View_8-pixel_m, respectively. If view 1 needs to display an image, then View1-pixelm retains its pixel control data. If view 2 does not need to display an image, then its corresponding pixel control data View_2-pixel_m is filled with blank data. For example, it can be adjusted to 0, thereby ensuring that the overall data structure of the pixel control data of each pixel does not change, which helps to simplify the control process.

[0103] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A display control method, the display control method comprising the following steps: The image processor of the display device renders image data corresponding to different display viewing angles separately; The image processor sends the rendered image data to the logic board corresponding to each of the display viewpoints; The logic board generates control data based on the received image data and sends the control data to the driver chip; The driver chip controls the display panel to display images according to the control data; The driver chip controls the display panel to display images according to the control data, including: The driver chip receives control data corresponding to each display viewing angle sent by the logic board; The control data corresponding to the same pixel are arranged in a preset viewing angle order to obtain pixel control data corresponding to each pixel. Before the image processor renders image data corresponding to different display perspectives, it also includes: Determine a first display view that does not need to display an image and a second display view that needs to display an image among the plurality of display viewpoints; The first sub-data is processed by the first logic board corresponding to the first display viewpoint to obtain the first control sub-signal, and the second sub-data is processed by the second logic board corresponding to the second display viewpoint to obtain the second control sub-signal. The first sub-data and the second sub-data are both data in the image data corresponding to the second display viewpoint, and the first sub-data and the second sub-data are different.

2. The method according to claim 1, wherein, Before the image processor renders image data corresponding to different display perspectives, it also includes: Obtain the trigger conditions for multi-view display; If there is more than one triggering condition, determine the priority of each triggering condition; The image rendering rules are determined based on the priority of the triggering conditions.

3. The method according to claim 2, wherein, The parameters for determining the triggering conditions include one or more of the following: object tracking results, two-dimensional / three-dimensional display mode, control coordinates, touch detection, and image update area.

4. The method according to claim 1, wherein, Before the image processor renders image data corresponding to different display perspectives, it also includes: Determine the first display view from the plurality of display views from which the image does not need to be displayed; The first logic board corresponding to the first display viewpoint is controlled to be in a low-power state.

5. The method according to claim 4, wherein, Arrange the data corresponding to the same pixel in the control data according to a preset viewing angle order, including: The pixel control data and the data corresponding to the first display viewpoint are filled with blank data.

6. The method according to claim 4 or 5, wherein, After controlling the first logic board corresponding to the first display viewing angle to be in a low-power state, the method further includes: The circuit in the driver chip corresponding to the first logic board is controlled to be in a low-power state.

7. The method according to claim 1, wherein, The driver chip controls the display panel to display images according to the control data, including: In the driver chip, the first control sub-signal and the second control signal are sorted according to the correspondence between the first sub-data and the second sub-data and the image data; The display panel is controlled to display images according to the sorted first and second control sub-signals.

8. A multi-view display device for executing the display control method as described in any one of claims 1-7, wherein the multi-view display device has multiple display views, the multi-view display device includes multiple logic boards, each logic board corresponds one-to-one with a display view, the logic board is used to process and transmit image data corresponding to the display view, and the logic boards corresponding to different display views are independently driven and controlled.

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