Screen refreshing method and device for 3D display equipment, equipment and medium

Abstract

The invention provides a screen refreshing method and device for 3D display equipment, equipment and a medium, the 3D display equipment comprises a display panel and a parallax barrier, and the method comprises the following steps: when a first frame image is output to the display panel, sending a first state switching instruction to a parallax barrier control unit, the first state switching instruction is used for indicating the parallax barrier control unit to control the parallax barrier to be switched from a current first state to a second state; after the display panel finishes scanning the first frame of image, outputting a frame of black image to the display panel; after the display panel scans the black image, a second frame image is output to the display panel, a second state switching instruction is sent to the parallax barrier control unit, and the second state switching instruction is used for instructing the parallax barrier control unit to control the parallax barrier to be switched from the current second state to the first state. By adopting the embodiment of the invention, naked-eye 3D display with lossless resolution can be realized for 3D display equipment with backlight or not.

Description

Technical Field

[0001] The present invention relates to the field of 3D display technologies, and in particular to a screen refreshing method, device, equipment, and medium for a 3D display device. Background Art

[0002] By using the time-sequential switching liquid crystal light valve technology in cooperation with a display panel that provides image content, a naked-eye three-dimensional (3D) display with lossless resolution can be achieved. Among them, the key in the time-sequential switching liquid crystal light valve technology lies in that the frequencies of image refreshing, screen refreshing, light valve switching or toggling should be kept consistent, and signal synchronization control is required.

[0003] If a time-sequential switching liquid crystal light valve 3D display device is to be implemented based on a liquid crystal screen, it is necessary to control screen refreshing, light valve switching, and the scanning or switching of the backlight. It is required to simultaneously control the screen, the backlight, and the light valve in a coordinated manner, and it is required that the backlight is a scanning backlight or the display is at least a 240hz refresh rate display. This undoubtedly increases the requirements for the liquid crystal screen and raises the cost. More importantly, current organic light-emitting diode (OLED) screens and micro light emitting diode display (MicroLED) screens, etc., do not have a backlight, and the above solutions cannot achieve a naked-eye 3D display with lossless resolution. Summary of the Invention

[0004] The purpose of the present invention is to provide a screen refreshing method, device, equipment, and medium for a 3D display device, which is used to solve the problem that in the prior art, for a display panel without a backlight, a naked-eye 3D display with lossless resolution cannot be achieved by the screen refreshing method based on the time-sequential switching liquid crystal light valve technology.

[0005] To solve the above technical problems, an embodiment of the present invention provides a screen refreshing method for a 3D display device. The 3D display device includes a display panel and a parallax barrier, and the method includes:

[0006] When outputting a first frame of image to the display panel, sending a first state switching instruction to the parallax barrier control unit, where the first state switching instruction is used to instruct the parallax barrier control unit to control the parallax barrier to switch from the current first state to a second state;

[0007] After the display panel finishes scanning the first frame of image, outputting a frame of black image to the display panel;

[0008] After the display panel finishes scanning the black image, output a second frame of image to the display panel and send a second state switching instruction to the parallax barrier control unit, where the second state switching instruction is used to instruct the parallax barrier control unit to control the parallax barrier to switch from the current second state to the first state;

[0009] Wherein, the parallax barrier includes a plurality of light transmission control units. In the first state, the liquid crystal molecules corresponding to the light transmission control units in the odd rows among the plurality of light transmission control units are in a first deflection state, and the liquid crystal molecules corresponding to the light transmission control units in the even rows are in a second deflection state; in the second state, the liquid crystal molecules corresponding to the light transmission control units in the odd rows among the plurality of light transmission control units are in a second polarization state, and the liquid crystal molecules corresponding to the light transmission control units in the even rows are in a first polarization state.

[0010] Optionally, the method further includes:

[0011] After the display panel finishes scanning the second frame of image, output a frame of black image to the display panel.

[0012] Optionally, before outputting the second frame of image to the display panel, the method further includes:

[0013] Switch the image data of the odd pixel columns in the first frame of image to the even pixel columns, and switch the image data of the even pixel columns in the first frame of image to the odd pixel columns to obtain the second frame of image.

[0014] Optionally, after outputting a frame of black image to the display panel, the method further includes:

[0015] Send a state holding instruction to the parallax barrier control unit;

[0016] Wherein, when the parallax barrier is in the first state, the state holding instruction is used to instruct the parallax barrier control unit to control the parallax barrier to maintain the first state; when the parallax barrier is in the second state, the state holding instruction is used to instruct the parallax barrier control unit to control the parallax barrier to maintain the second state.

[0017] Optionally, outputting the first frame of image to the display panel includes:

[0018] Output the first frame of image to the display panel by controlling the display panel to scan the first frame of image row by row from the bottom to the top or from the top to the bottom of the display panel;

[0019] Outputting a frame of black image to the display panel includes:

[0020] By controlling the display panel to scan the black image line by line from the bottom to the top or from the top to the bottom of the display panel, a frame of black image is output to the display panel;

[0021] Output a second frame of image to the display panel, including:

[0022] By controlling the display panel to scan the second frame of image line by line from the bottom to the top or from the top to the bottom of the display panel, the second frame of image is output to the display panel.

[0023] An embodiment of the present invention further provides a screen refreshing device for a 3D display device. The 3D display device includes a display panel and a parallax barrier. The device includes:

[0024] A first sending module, configured to send a first state switching instruction to the parallax barrier control unit when outputting a first frame of image to the display panel. The first state switching instruction is used to instruct the parallax barrier control unit to control the parallax barrier to switch from the current first state to the second state;

[0025] A first output module, configured to output a frame of black image to the display panel after the display panel finishes scanning the first frame of image;

[0026] A second sending module, configured to output a second frame of image to the display panel after the display panel finishes scanning the black image, and send a second state switching instruction to the parallax barrier control unit. The second state switching instruction is used to instruct the parallax barrier control unit to control the parallax barrier to switch from the current second state to the first state;

[0027] Wherein, the parallax barrier includes a plurality of light transmission control units. In the first state, the liquid crystal molecules corresponding to the light transmission control units in the odd rows among the plurality of light transmission control units are in a first deflection state, and the liquid crystal molecules corresponding to the light transmission control units in the even rows are in a second deflection state; in the second state, the liquid crystal molecules corresponding to the light transmission control units in the odd rows among the plurality of light transmission control units are in a second polarization state, and the liquid crystal molecules corresponding to the light transmission control units in the even rows are in a first polarization state.

[0028] An embodiment of the present invention further provides a network device, including: a processor, a memory, and a program stored on the memory and executable on the processor. When the program is executed by the processor, it implements the screen refreshing method for a 3D display device as described in any one of the above.

[0029] An embodiment of the present invention also provides a readable storage medium, including: a program is stored on the readable storage medium, and when the program is executed by a processor, the steps of the screen refreshing method for a 3D display device described in any one of the above are implemented.

[0030] An embodiment of the present invention also provides a computer program product, including computer instructions, and when the computer instructions are executed by a processor, the steps of the screen refreshing method for a 3D display device described in any one of the above are implemented.

[0031] At least one of the above technical solutions of the present invention has the following beneficial effects:

[0032] In the above solution, when outputting the first frame image or the second frame image to the display panel, an instruction is also sent to the parallax barrier control unit to cause the parallax barrier to switch states, so that naked-eye 3D display can be realized. After the display panel finishes scanning the first frame image and before outputting the second frame image to the display panel, a black image is first output to the display panel. Since a black image is inserted between the first frame image and the second frame image, the situation where the first frame image and the second frame image appear on the display panel at the same time will not occur, avoiding crosstalk. Compared with the prior art, there is no need to control the on / off of the backlight, and it is applicable not only to display panels with backlight but also to display panels without backlight, and lossless resolution naked-eye 3D display can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic structural diagram of a 3D display system according to an embodiment of the present invention;

[0034] Figure 2 It is a schematic structural diagram of a parallax barrier according to an embodiment of the present invention;

[0035] Figure 3 It is a schematic flow diagram of a screen refreshing method for a 3D display device according to an embodiment of the present invention;

[0036] Figure 4 It is one of the imaging schematic diagrams of a 3D display device according to an embodiment of the present invention;

[0037] Figure 5 It is the second imaging schematic diagram of a 3D display device according to an embodiment of the present invention;

[0038] Figure 6 It is a schematic diagram of a display panel displaying an image according to an embodiment of the present invention;

[0039] Figure 7 It is a schematic structural diagram of a screen refreshing device for a 3D display device according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0041] As Figure 1 shown, the present invention provides a 3D display system, including: an image calculation unit, a parallax barrier control unit, and a 3D display device. Among them, the 3D display device includes a display panel and a parallax barrier; the image calculation unit can generate and send an image to the display panel, and the image calculation unit can also send an instruction to the parallax barrier control unit, and the instruction is used to control the parallax barrier to perform a state switch;

[0042] Among them, the image calculation unit can be a central processing unit (CPU) or a graphics processing unit (GPU) of a computer, or a field programmable gate array (FPGA) or an application specific integrated circuit (ASIC) chip capable of having an image generation function;

[0043] The parallax barrier control unit can be a CPU, a GPU, an FPGA, an ASIC, or a chip with a microcontroller unit (MCU);

[0044] As Figure 2 shown, the parallax barrier is a liquid crystal parallax barrier, and the parallax barrier includes a first glass substrate 1 and a second glass substrate 2 arranged oppositely, a nematic liquid crystal layer 3 arranged between the first glass substrate 1 and the second glass substrate 2, and a polarizer 4 arranged on the side of the first glass substrate 1 away from the second glass substrate 2;

[0045] The parallax barrier further includes an electrode layer, and the electrode layer includes a first electrode layer 5 arranged on the first glass substrate 1 facing the nematic liquid crystal layer 3, a second electrode layer 6 and a third electrode layer 7 arranged on the second glass substrate 2 facing the nematic liquid crystal layer 3; among them, the second electrode layer 6 and the third electrode layer 7 are arranged in a cross pattern, and there is an insulating layer separating the second electrode layer 6 and the third electrode layer 7, and the electrode layer is an indium tin oxide (ITO) metal electrode layer.

[0046] By applying a voltage to the electrode layer of the parallax barrier, the deflection state of the liquid crystal molecules in the liquid crystal layer corresponding to the electrode layer can be changed, thereby changing the state of the parallax barrier. Figure 2 Figure 2 shows the state where the parallax barrier is not powered on. If a voltage is applied to the first electrode layer 5 and the second electrode layer 6, the liquid crystal molecules corresponding to the second electrode layer 6 will deflect and present a light-transmitting state, while the liquid crystal molecules corresponding to the third electrode layer 7 remain unchanged and present a light-blocking state. If a voltage is applied to the first electrode layer 5 and the third electrode layer 7, the liquid crystal molecules corresponding to the third electrode layer 7 will deflect and present a light-transmitting state, while the liquid crystal molecules corresponding to the second electrode layer 6 remain unchanged and present a light-blocking state. By continuously alternating the voltage application between the first electrode layer 5 and the second electrode layer 6, and the first electrode layer 5 and the third electrode layer 7, a sequential liquid crystal parallax barrier can be formed.

[0047] As Figure 3 shown, an embodiment of the present invention provides a screen refreshing method for a 3D display device, where the 3D display device includes a display panel and a parallax barrier, and includes:

[0048] Step S301, when outputting the first frame of image to the display panel, send a first state switching instruction to the parallax barrier control unit, where the first state switching instruction is used to instruct the parallax barrier control unit to control the parallax barrier to switch from the current first state to the second state;

[0049] Step S302, after the display panel finishes scanning the first frame of image, output a frame of black image to the display panel;

[0050] Step S303, after the display panel finishes scanning the black image, output the second frame of image to the display panel, and send a second state switching instruction to the parallax barrier control unit, where the second state switching instruction is used to instruct the parallax barrier control unit to control the parallax barrier to switch from the current second state to the first state;

[0051] Among them, the parallax barrier includes a plurality of light transmission control units. In the first state, the liquid crystal molecules corresponding to the light transmission control units in the odd rows among the plurality of light transmission control units are in the first deflection state, and the liquid crystal molecules corresponding to the light transmission control units in the even rows are in the second deflection state; in the second state, the liquid crystal molecules corresponding to the light transmission control units in the odd rows among the plurality of light transmission control units are in the second polarization state, and the liquid crystal molecules corresponding to the light transmission control units in the even rows are in the first polarization state.

[0052] In an embodiment of the present invention, the parallax barrier is Figure 2For the liquid crystal parallax barrier shown, the light-transmission control unit is the electrode layer of the parallax barrier. By applying a voltage to the light-transmission control unit, the deflection state of the corresponding liquid crystal molecules can be changed, and then some liquid crystal molecules will present a light-transmitting state. Among them, if the liquid crystal molecules are in the first deflection state and present a light-transmitting state, then when the liquid crystal molecules are in the second deflection state, they present a non-light-transmitting state; if the liquid crystal molecules are in the first deflection state and present a non-light-transmitting state, then when the liquid crystal molecules are in the second deflection state, they present a light-transmitting state.

[0053] By alternately applying voltages to the odd rows and even rows of the light-transmission control unit, the liquid crystal molecules corresponding to the odd rows and even rows alternately present a light-transmitting state, that is, the parallax barrier switches between the first state and the second state, and a time-sequential liquid crystal parallax barrier can be formed.

[0054] In the embodiments of the present invention, when the image calculation unit outputs the first frame image or the second frame image to be displayed to the display panel, it also sends an instruction to the parallax barrier control unit to cause the parallax barrier to switch states, forming a time-sequential liquid crystal parallax barrier, and naked-eye 3D display can be achieved. Among them, after the display panel finishes scanning the first frame image and before outputting the second frame image to the display panel, the embodiments of the present invention first output a black image to the display panel. Since a black image is inserted between the first frame image and the second frame image, the situation where the first frame image and the second frame image appear on the display panel at the same time will not occur, avoiding crosstalk. Compared with the prior art, there is no need to control the on / off of the backlight, and it is applicable not only to display panels with backlight but also to display panels without backlight, and naked-eye 3D display with lossless resolution can be achieved.

[0055] Optionally, the method further includes:

[0056] After the display panel finishes scanning the second frame image, output a black image to the display panel.

[0057] In the embodiments of the present invention, after the display panel finishes scanning the second frame image and before outputting the next frame image to the display panel, a black image is still first output to the display panel, so that the second frame image and the next frame image do not appear on the display panel at the same time, avoiding crosstalk, and naked-eye 3D display with lossless resolution can be achieved.

[0058] Optionally, before outputting the second frame image to the display panel, the method further includes:

[0059] Switch the image data of the odd pixel columns in the first frame image to the even pixel columns, and switch the image data of the even pixel columns in the first frame image to the odd pixel columns to obtain the second frame image.

[0060] In an embodiment of the present invention, when outputting a second frame of image to the display panel, a second state switching instruction is also sent to the parallax barrier control unit, so that the parallax barrier is switched from the current second state to the first state. Since the left and right eye regions corresponding to the odd and even column pixels on the display panel when the parallax barrier is in the first state are opposite to those when the parallax barrier is in the second state, in order to ensure a stable visual effect when the user uses the 3D display device, when the parallax barrier switches states, the image data corresponding to the odd and even pixel columns of the first frame of image and the second frame of image are also exchanged, that is, the image data of the odd pixel columns in the first frame of image is switched to the even pixel columns, and the image data of the even pixel columns in the first frame of image is switched to the odd pixel columns to obtain the second frame of image.

[0061] For ease of understanding, the following is illustrated by a specific embodiment:

[0062] As Figure 4 shown, a voltage is applied to the even rows in the light transmission control unit, causing the liquid crystal molecules corresponding to the even rows to deflect and present a light-transmitting state. At this time, the odd column pixels on the display panel correspond to the left eye region, and the even column pixels correspond to the right eye region;

[0063] As Figure 5 shown, a voltage is applied to the odd rows in the light transmission control unit, causing the liquid crystal molecules corresponding to the odd rows to deflect and present a light-transmitting state. At this time, the odd column pixels on the display panel correspond to the right eye region, and the even column pixels correspond to the left eye region;

[0064] Therefore, in order to ensure a stable visual effect when the user uses the 3D display device, when generating the second frame of image, the image data of the odd pixel columns in the first frame of image is switched to the even pixel columns, and the image data of the even pixel columns in the first frame of image is switched to the odd pixel columns to obtain the second frame of image. The image data seen by the user's left eye remains unchanged, and the image data seen by the user's right eye also remains unchanged.

[0065] Optionally, after outputting a frame of black image to the display panel, the method further includes:

[0066] Sending a state holding instruction to the parallax barrier control unit;

[0067] Wherein, when the parallax barrier is in the first state, the state holding instruction is used to instruct the parallax barrier control unit to control the parallax barrier to maintain the first state; when the parallax barrier is in the second state, the state holding instruction is used to instruct the parallax barrier control unit to control the parallax barrier to maintain the second state.

[0068] In the embodiments of the present invention, the purpose of outputting a black image to the display panel is to separate the first frame image and the second frame image, reduce the screen display frequency, and there is no need to switch the state of the parallax barrier. Therefore, a status holding instruction needs to be sent to the parallax barrier control unit to keep the parallax barrier in the current state.

[0069] Optionally, outputting the first frame image to the display panel includes:

[0070] Outputting the first frame image to the display panel by controlling the display panel to scan the first frame image line by line from the bottom to the top or from the top to the bottom of the display panel;

[0071] Outputting a frame of black image to the display panel includes:

[0072] Outputting a frame of black image to the display panel by controlling the display panel to scan the black image line by line from the bottom to the top or from the top to the bottom of the display panel;

[0073] Outputting the second frame image to the display panel includes:

[0074] Outputting the second frame image to the display panel by controlling the display panel to scan the second frame image line by line from the bottom to the top or from the top to the bottom of the display panel.

[0075] In the embodiments of the present invention, the manner of outputting an image to the display panel is described. When the display panel displays an image, it scans and displays line by line from the bottom to the top or from the top to the bottom of the display panel;

[0076] As Figure 6 shown, it is a schematic diagram of the display panel scanning line by line from the bottom to the top and sequentially displaying the first frame image, the black image, and the second frame image in the embodiments of the present invention. During this process, the display panel reduces the display frequency of the first frame image and the second frame image to 1 / 4 of the screen refresh frequency. However, since the parallax barrier is a time-sequential switching liquid crystal parallax barrier, the display effect will not be reduced while reducing crosstalk, and lossless resolution naked-eye 3D display can be achieved.

[0077] As Figure 7 shown, the embodiments of the present invention further provide a screen refreshing device for a 3D display device. The 3D display device includes a display panel and a parallax barrier. The device includes:

[0078] The first sending module 701 is configured to send a first state switching instruction to the parallax barrier control unit when outputting a first frame of image to the display panel, where the first state switching instruction is used to instruct the parallax barrier control unit to control the parallax barrier to switch from the current first state to the second state;

[0079] The first output module 702 is configured to output a frame of black image to the display panel after the display panel finishes scanning the first frame of image;

[0080] The second sending module 703 is configured to output a second frame of image to the display panel and send a second state switching instruction to the parallax barrier control unit after the display panel finishes scanning the black image, where the second state switching instruction is used to instruct the parallax barrier control unit to control the parallax barrier to switch from the current second state to the first state;

[0081] Wherein, the parallax barrier includes a plurality of light transmission control units. In the first state, the liquid crystal molecules corresponding to the light transmission control units in the odd rows among the plurality of light transmission control units are in a first deflection state, and the liquid crystal molecules corresponding to the light transmission control units in the even rows are in a second deflection state; in the second state, the liquid crystal molecules corresponding to the light transmission control units in the odd rows among the plurality of light transmission control units are in a second polarization state, and the liquid crystal molecules corresponding to the light transmission control units in the even rows are in a first polarization state.

[0082] Optionally, the device further includes:

[0083] The second output module is configured to output a frame of black image to the display panel after the display panel finishes scanning the second frame of image.

[0084] Optionally, the device further includes:

[0085] The first acquisition module is configured to switch the image data of the odd pixel columns in the first frame of image to the even pixel columns, and switch the image data of the even pixel columns in the first frame of image to the odd pixel columns to obtain the second frame of image.

[0086] Optionally, the device further includes:

[0087] The third sending module is configured to send a state holding instruction to the parallax barrier control unit;

[0088] Wherein, when the parallax barrier is in the first state, the state holding instruction is used to instruct the parallax barrier control unit to control the parallax barrier to maintain the first state; when the parallax barrier is in the second state, the state holding instruction is used to instruct the parallax barrier control unit to control the parallax barrier to maintain the second state.

[0089] Optionally, the first transmission module 701 includes

[0090] a first output unit, configured to output a first frame of image to the display panel by controlling the display panel to scan the first frame of image line by line from the bottom to the top or from the top to the bottom of the display panel;

[0091] The first output module 702 includes:

[0092] a second output unit, configured to output a frame of black image to the display panel by controlling the display panel to scan the black image line by line from the bottom to the top or from the top to the bottom of the display panel;

[0093] The second transmission module 703 includes

[0094] a third output unit, configured to output a second frame of image to the display panel by controlling the display panel to scan the second frame of image line by line from the bottom to the top or from the top to the bottom of the display panel.

[0095] It should be noted that the embodiments of this device are corresponding devices to the embodiments of the above method. All implementation manners in the embodiments of the above method are applicable to the embodiments of this device and can achieve the same technical effects.

[0096] An embodiment of the present invention further provides a network device, including: a processor, a memory, and a program stored on the memory and executable on the processor. When the program is executed by the processor, it implements the screen refreshing method for a 3D display device as described in any one of the above.

[0097] An embodiment of the present invention further provides a readable storage medium, including: a program stored on the readable storage medium. When the program is executed by a processor, it implements the steps of the screen refreshing method for a 3D display device as described in any one of the above.

[0098] An embodiment of the present invention further provides a computer program product, including computer instructions. When the computer instructions are executed by a processor, they implement each process of the above-mentioned method embodiment of the screen refreshing method for a 3D display device and can achieve the same technical effects. To avoid repetition, details are not described here again.

[0099] It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising said element.

[0100] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these changes and modifications.

Claims

1. A screen refreshing method for a 3D display device, characterized in that, The 3D display device includes a display panel and a parallax barrier, and includes: When outputting a first frame of image to the display panel, send a first state switching instruction to the parallax barrier control unit, where the first state switching instruction is used to instruct the parallax barrier control unit to control the parallax barrier to switch from the current first state to the second state; After the display panel finishes scanning the first frame of image, output a frame of black image to the display panel; After the display panel finishes scanning the black image, output a second frame of image to the display panel, and send a second state switching instruction to the parallax barrier control unit, where the second state switching instruction is used to instruct the parallax barrier control unit to control the parallax barrier to switch from the current second state to the first state; Wherein, the parallax barrier includes a plurality of light transmission control units. In the first state, the liquid crystal molecules corresponding to the light transmission control units in the odd rows of the plurality of light transmission control units are in a first deflection state, and the liquid crystal molecules corresponding to the light transmission control units in the even rows are in a second deflection state; in the second state, the liquid crystal molecules corresponding to the light transmission control units in the odd rows of the plurality of light transmission control units are in a second polarization state, and the liquid crystal molecules corresponding to the light transmission control units in the even rows are in a first polarization state.

2. The screen refreshing method for a 3D display device according to claim 1, wherein The method further includes: After the display panel finishes scanning the second frame of image, output a frame of black image to the display panel.

3. The screen refreshing method for a 3D display device according to claim 1, characterized in that, Before outputting the second frame of image to the display panel, the method further includes: Switch the image data of the odd pixel columns in the first frame of image to the even pixel columns, and switch the image data of the even pixel columns in the first frame of image to the odd pixel columns to obtain the second frame of image.

4. The screen refreshing method for a 3D display device according to claim 1 or 2, characterized in that, After outputting a frame of black image to the display panel, the method further includes: Send a state holding instruction to the parallax barrier control unit; Wherein, when the parallax barrier is in the first state, the state holding instruction is used to instruct the parallax barrier control unit to control the parallax barrier to maintain the first state; when the parallax barrier is in the second state, the state holding instruction is used to instruct the parallax barrier control unit to control the parallax barrier to maintain the second state.

5. The screen refreshing method for a 3D display device according to claim 1, wherein Outputting a first frame of image to the display panel includes: Output a first frame of image to the display panel by controlling the display panel to scan the first frame of image row by row from the bottom to the top or from the top to the bottom of the display panel; Outputting a frame of black image to the display panel includes: Output a frame of black image to the display panel by controlling the display panel to scan the black image row by row from the bottom to the top or from the top to the bottom of the display panel; Outputting a second frame of image to the display panel includes: Output a second frame of image to the display panel by controlling the display panel to scan the second frame of image row by row from the bottom to the top or from the top to the bottom of the display panel.

6. A screen refreshing device for a 3D display device, characterized in that, The 3D display device includes a display panel and a parallax barrier, and the device includes: A first sending module, configured to send a first state switching instruction to the parallax barrier control unit when outputting a first frame of image to the display panel, where the first state switching instruction is used to instruct the parallax barrier control unit to control the parallax barrier to switch from a current first state to a second state; A first output module, configured to output a frame of black image to the display panel after the display panel finishes scanning the first frame of image; A second sending module, configured to output a second frame of image to the display panel and send a second state switching instruction to the parallax barrier control unit after the display panel finishes scanning the black image, where the second state switching instruction is used to instruct the parallax barrier control unit to control the parallax barrier to switch from a current second state to the first state; Wherein, the parallax barrier includes a plurality of light transmission control units. In the first state, the liquid crystal molecules corresponding to the light transmission control units in odd rows among the plurality of light transmission control units are in a first deflection state, and the liquid crystal molecules corresponding to the light transmission control units in even rows are in a second deflection state; in the second state, the liquid crystal molecules corresponding to the light transmission control units in odd rows among the plurality of light transmission control units are in a second polarization state, and the liquid crystal molecules corresponding to the light transmission control units in even rows are in a first polarization state.

7. A network device, characterized in that, Comprising: A processor, a memory, and a program stored on the memory and executable on the processor, where the program, when executed by the processor, implements the screen refreshing method for a 3D display device according to any one of claims 1 to 5.

8. A readable storage medium, characterized in that, Comprising: A program is stored on the readable storage medium, and when the program is executed by a processor, the steps of the screen refreshing method for a 3D display device according to any one of claims 1 to 5 are implemented.

9. A computer program product, characterized in that, Comprising computer instructions, and when the computer instructions are executed by a processor, the steps of the screen refreshing method for a 3D display device according to any one of claims 1 to 5 are implemented.

Images