Grating driving module and related device, grating adjusting method and grating testing method

Abstract

The application provides a grating driving module and related equipment, a grating adjusting method and a grating testing method, which are used for reducing driving grating delay, improving the speed of adjusting the grating, and improving the 3D stereoscopic effect. The grating driving module is used for providing driving signals to a plurality of driving electrodes in a liquid crystal grating; a processing module is configured to: acquire an eye coordinate, determine a to-be-started liquid crystal grating range; and generate a target indication signal based on the to-be-started liquid crystal grating range, the target indication signal indicating a first driving electrode in the to-be-started liquid crystal grating range; the grating driving module is configured to: receive the target indication signal, output a first driving signal to the first driving electrode, and output a second driving signal to a second driving electrode in the liquid crystal grating except the to-be-started liquid crystal grating range; the first driving signal and the second driving signal are both generated based on a clock signal of the grating driving module.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and in particular to a grating driving module and related equipment, a grating adjustment method and a grating testing method. Background Technology

[0002] With the continuous development of display technology, three-dimensional (3D) display technology is receiving increasing attention. In 3D display technology, due to the difference in the horizontal distance between a user's two eyes, the images observed by the left and right eyes differ, thus creating a stereoscopic effect. The stereoscopic effect observed by the user at the optimal viewing distance of the 3D display device is the best. As the user moves, crosstalk may occur in the images observed, causing the stereoscopic effect to deteriorate. Summary of the Invention

[0003] This application provides a grating driving module and related equipment, a grating adjustment method and a grating testing method, which are used to reduce the driving delay of the grating, increase the speed of grating adjustment and improve the 3D stereoscopic effect.

[0004] In a first aspect, embodiments of this application provide a grating driving module for providing driving signals to multiple driving electrodes in a liquid crystal grating; the grating driving module is connected to a processing module, the processing module being configured to: acquire human eye coordinates, and determine the range of the liquid crystal grating to be opened based on the human eye coordinates; and generate a target indication signal based on the range of the liquid crystal grating to be opened, the target indication signal indicating a first driving electrode in the range of the liquid crystal grating to be opened;

[0005] The grating driving module is configured to: receive the target indication signal, output a first driving signal to the first driving electrode, and output a second driving signal to the second driving electrode in the liquid crystal grating other than the range of the liquid crystal grating to be opened;

[0006] Both the first driving signal and the second driving signal are generated based on the clock signal of the grating driving module.

[0007] In this embodiment, the processing module can instruct the first driving electrode to the grating driving module. Both the first driving signal provided by the grating driving module to the first driving electrode and the second driving signal provided to the second driving electrode are generated based on the clock signal of the grating driving module. In this driving method, the grating driving module can utilize its own clock signal to output the first and second driving signals, resulting in lower latency, simplifying the process of generating driving signals for each driving electrode, reducing circuit design complexity, increasing the speed of driving the liquid crystal grating, and improving the 3D stereoscopic display effect.

[0008] Optionally, both the first driving signal and the second driving signal are pulse signals, and the frequencies of the first driving signal and the second driving signal are the same as the frequency of the clock signal of the grating driving module.

[0009] In one possible design, the grating driving module provided in this application embodiment includes a control unit and a level conversion unit. The control unit is connected to the level conversion unit, and the level conversion unit is connected to each driving electrode in the liquid crystal grating.

[0010] The control unit is configured to: receive the target indication signal, and based on the target indication signal, generate a first control signal corresponding to the first driving electrode and a second control signal corresponding to the second driving electrode, wherein the amplitude of the first control signal and the amplitude of the second control signal are the same as the amplitude of the clock signal, and the frequency of the first control signal and the frequency of the second control signal are the same as the frequency of the clock signal.

[0011] The level conversion unit is configured to: receive a first control signal corresponding to the first driving electrode, perform level conversion processing on the first control signal to obtain a first driving signal, and provide the first driving signal to the first driving electrode; and receive a second control signal corresponding to the second driving electrode and provide the second driving signal to the second driving electrode.

[0012] In this embodiment, the clock signal of the grating driving module can be the clock signal of the control unit. The amplitude and frequency of the first and second control signals output by the control unit can both be the same as the clock signal. Optionally, one of the first and second control signals can be the same as the clock signal. The control unit requires less time to output a control signal with the same amplitude and frequency as the clock signal, which helps reduce latency. The control signal is level-converted by a level conversion unit, such as increasing the signal amplitude, to drive the liquid crystal corresponding to each electrode to be in an on or off state.

[0013] In one possible design, in the grating driving module provided in this application embodiment, the liquid crystal grating includes a common electrode, and the common electrode is disposed opposite to each driving electrode in the liquid crystal grating;

[0014] The control unit is also configured to send the clock signal to the level conversion unit;

[0015] The level conversion unit is further configured to: receive the clock signal, perform level conversion processing on the clock signal to obtain a reference pulse signal, and provide the reference pulse signal to the common electrode.

[0016] In one possible design, the level conversion unit in the grating driving module provided in this application embodiment includes multiple first output terminals and second output terminals;

[0017] The plurality of first output terminals and the plurality of driving electrodes correspond one-to-one, and the first output terminal is connected to the corresponding driving electrode.

[0018] The second output terminal is connected to the common electrode.

[0019] In one possible design, in the grating driving module provided in this application embodiment, the difference between the level of the first driving signal at any moment and the level of the reference pulse signal at any moment is the same as any turn-on voltage of the liquid crystal.

[0020] The difference between the level of the second driving signal at any given moment and the level of the reference pulse signal at any given moment is the same as the liquid crystal's shut-off voltage.

[0021] Secondly, embodiments of this application also provide a grating adjustment device, including a processing module and a grating driving module as described in the first aspect and any possible design thereof; the grating driving module is used to provide driving signals to a plurality of driving electrodes in a liquid crystal grating;

[0022] The processing module is configured to: acquire human eye coordinates, and determine the range of the liquid crystal grating to be opened based on the human eye coordinates; and generate a target indication signal based on the range of the liquid crystal grating to be opened, wherein the target indication signal indicates the first driving electrode in the range of the liquid crystal grating to be opened.

[0023] In one possible design, in the grating adjustment device provided in this application embodiment, the human eye coordinates include left eye coordinates and right eye coordinates; the liquid crystal grating is disposed facing the display panel, and the display panel includes left eye pixels and right eye pixels;

[0024] The processing module is specifically configured as follows:

[0025] In working mode, the range of the liquid crystal grating to be activated is determined based on the preset target relationship, the left eye coordinates, and the right eye coordinates.

[0026] In one possible design, in the grating adjustment device provided in this application embodiment, the processing module is configured as follows:

[0027] A preset display indication signal is sent to the display panel, the preset display indication signal being used to instruct each left-eye pixel in the display panel to display a first color and each right-eye pixel to display a second color;

[0028] Acquire first detection information and second detection information, wherein the first detection information includes a first detection result of color detection at the left eye coordinate, and the second detection information includes a second detection result of color detection at the right eye coordinate;

[0029] If the first detection result indicates that the second color is detected, or the second detection result indicates that the first color is detected, the range of the liquid crystal grating to be opened is adjusted, and the detection information is reacquired until the first detection result does not indicate that the second color is detected, and the second detection result does not indicate that the first color is detected. The preset target relationship is generated based on the last adjusted range of the liquid crystal grating to be opened and the left eye coordinates and the right eye coordinates.

[0030] In this embodiment, the grating adjustment device can adjust the activated grating in test mode and detect colors at the left and right eye coordinates. Based on the detection results, the activated grating is adjusted until only the first color can be detected at the left eye coordinate and only the second color can be detected at the right eye coordinate. The range of the liquid crystal grating to be activated at this point can be considered the ideal range corresponding to the left and right eye coordinates. The grating adjustment device can use multiple sets of human eye coordinates and the ideal ranges corresponding to each human eye coordinate to fit a target relationship. This is beneficial for the grating adjustment device in working mode to obtain the ideal range corresponding to the current human eye coordinates using the target relationship, thus more accurately determining the range of the liquid crystal grating to be activated.

[0031] Thirdly, embodiments of this application also provide a display device, including a display panel, a liquid crystal grating, and a grating adjustment device as described in the second aspect and any of its possible designs, wherein the liquid crystal grating is disposed opposite to the display panel, and the grating adjustment device is connected to the liquid crystal grating.

[0032] Fourthly, embodiments of this application also provide a 3D display system, including an eye-tracking device and a display device as described in the third aspect, wherein the eye-tracking device is used to output the eye coordinates.

[0033] Fifthly, embodiments of this application also provide a grating adjustment method for driving a liquid crystal grating, the method comprising:

[0034] Obtain the coordinates of the human eye;

[0035] Based on the human eye coordinates, determine the range of the liquid crystal grating to be opened;

[0036] A first driving signal is provided to the driving electrode in the area of ​​the liquid crystal grating to be opened;

[0037] A second driving signal is provided to the second driving electrode in the liquid crystal grating, excluding the area of ​​the liquid crystal grating to be opened;

[0038] Wherein, both the first driving signal and the second driving signal are pulse signals, and the frequencies of the first driving signal and the second driving signal are the same as the frequency of the clock signal of the grating driving module.

[0039] In one possible design, the grating adjustment method provided in this application embodiment uses pulse signals for both the first driving signal and the second driving signal; the method further includes:

[0040] Provide a reference pulse signal to the liquid crystal grating;

[0041] Wherein, the difference between the level of the first driving signal at any moment and the level of the reference pulse signal at any moment reaches the liquid crystal driving voltage;

[0042] The difference between the level of the second driving signal at any time and the level of the reference pulse signal at any time does not reach the liquid crystal driving voltage.

[0043] In one possible design, the grating adjustment method provided in this application embodiment includes left eye coordinates and right eye coordinates;

[0044] Determining the range of the liquid crystal grating to be opened based on the human eye coordinates includes:

[0045] Based on the preset target relationship, the left eye coordinates, and the right eye coordinates, the range of the liquid crystal grating to be activated is determined.

[0046] Sixthly, embodiments of this application also provide a grating testing method, the method comprising:

[0047] A preset display indication signal is sent to the display panel, the preset display indication signal being used to instruct each left-eye pixel in the display panel to display a first color and each right-eye pixel to display a second color;

[0048] Obtain human eye coordinates, which include left eye coordinates and right eye coordinates;

[0049] Based on a preset initial relationship, the left eye coordinates and the right eye coordinates determine the range of the liquid crystal grating to be activated;

[0050] A first driving signal is provided to the driving electrode in the range of the liquid crystal grating to be opened, and a second driving signal is provided to the second driving electrode in the liquid crystal grating other than the range of the liquid crystal grating to be opened;

[0051] Acquire first detection information and second detection information, wherein the first detection information includes a first detection result of color detection at the left eye coordinate, and the second detection information includes a second detection result of color detection at the right eye coordinate;

[0052] If the first detection result indicates that the second color is detected, or the second detection result indicates that the first color is detected, the range of the liquid crystal grating to be opened is adjusted, and the detection information is acquired again until the first detection result does not indicate that the second color is detected, and the second detection result does not indicate that the first color is detected;

[0053] Based on the last adjusted range of the liquid crystal grating to be opened and the left eye coordinates and the right eye coordinates, a target relationship is generated, wherein the target relationship is used to drive the liquid crystal grating.

[0054] In a seventh aspect, embodiments of the present invention also provide a computer storage medium having a computer program stored thereon, which, when executed by a processor, is used to implement the steps of the methods described in the fifth or sixth aspect above.

[0055] The beneficial effects of the third to seventh aspects can be found in the relevant descriptions in the first and second aspects. These or other aspects of this application will become more apparent in the following description of the embodiments. Attached Figure Description

[0056] Figure 1 A schematic diagram of a liquid crystal grating provided in an embodiment of this disclosure;

[0057] Figure 2 A schematic diagram of a liquid crystal grating provided in an embodiment of this disclosure;

[0058] Figure 3 This is a schematic diagram of the structure of the grating adjustment device provided in the embodiments of this disclosure;

[0059] Figure 4 A schematic diagram of the coordinate system provided in the embodiments of this disclosure;

[0060] Figure 5 This is a schematic diagram of the structure of the grating driving module provided in an embodiment of this disclosure;

[0061] Figure 6A A schematic diagram of a driving signal output by a grating driving module provided in an embodiment of this disclosure;

[0062] Figure 6B A schematic diagram of a driving signal output by a grating driving module provided in an embodiment of this disclosure;

[0063] Figure 7This is a schematic diagram of the specific structure of a grating driving module provided in an embodiment of the present disclosure;

[0064] Figure 8 This is a schematic diagram of the structure of a display device provided in an embodiment of the present disclosure;

[0065] Figure 9 This is a schematic diagram of the structure of a 3D display system provided in an embodiment of the present disclosure;

[0066] Figure 10 A schematic flowchart illustrating a grating adjustment method provided in an embodiment of this disclosure;

[0067] Figure 11 This is a schematic flowchart of a grating testing method provided in an embodiment of the present disclosure. Detailed Implementation

[0068] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. It should be noted that the dimensions and shapes of the figures in the drawings do not reflect actual proportions and are only intended to illustrate the content of this disclosure. Furthermore, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. To keep the following description of the embodiments of this disclosure clear and concise, detailed descriptions of known functions and known components are omitted.

[0069] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure and the claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “inner,” “outer,” “upper,” and “lower” are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0070] Glasses-free 3D display technology utilizes the parallax of the two eyes to create realistic stereoscopic images with spatial depth without the need for any auxiliary equipment (such as 3D glasses). Due to the realistic and vivid expressiveness, strong environmental immersion, and powerful visual impact of the stereoscopic images displayed by glasses-free 3D display devices, their applications are becoming increasingly widespread.

[0071] To ensure that users can observe a stable stereoscopic effect while moving, embodiments of this disclosure provide a light driving module, a grating adjustment device, a display device, a 3D display system, a grating driving method, and a grating driving test method. These methods can adjust the opening and closing of the liquid crystal grating according to the user's eye coordinates, have low latency, reduce crosstalk, produce a stable stereoscopic effect, and have low power consumption.

[0072] The grating adjustment device provided in the embodiments of this disclosure will now be described in conjunction with the accompanying drawings. Figure 1 An exemplary liquid crystal grating is shown. Please refer to... Figure 1 The liquid crystal grating 10 includes a first substrate layer 101, a second substrate layer 102, and liquid crystal 100 disposed between the first substrate layer 101 and the second substrate layer 102. A common electrode layer 103 is disposed on the side of the first substrate layer 101 closest to the second substrate layer 102. At least one driving electrode layer is disposed on the side of the second substrate layer 102 closest to the first substrate layer 101. In some examples, the liquid crystal grating can be a light barrier type TN liquid crystal driving grating.

[0073] like Figure 1 As shown, the liquid crystal grating 10 may include multiple driving electrode layers. The multiple driving electrode layers 104 include a first driving electrode layer 1041 and a second driving electrode layer 1042. The first driving electrode layer 1041 may include a plurality of uniformly distributed strip-shaped driving electrodes 104a. The second driving electrode layer 1042 may include a plurality of uniformly distributed strip-shaped driving electrodes 104a. The projections of the strip-shaped driving electrodes 104a in the second driving electrode layer 1042 onto the second substrate layer 102 do not overlap or only partially overlap with the projections of the strip-shaped driving electrodes 104a in the first driving electrode layer 1041 onto the second substrate layer 102. In other examples, such as... Figure 2 As shown, the liquid crystal grating includes a driving electrode layer 104, denoted as the third driving electrode layer 1043. The third driving electrode layer includes a plurality of uniformly distributed strip driving electrodes 104a.

[0074] For any one of the strip-shaped driving electrodes 104a, the difference (i.e., voltage difference) between the driving level at the strip-shaped driving electrode 104a and the level at the common electrode reaches any threshold voltage of the liquid crystal, causing the liquid crystal between the strip-shaped electrode 104a and the common electrode to deflect, forming a light-transmitting region. The threshold voltage of the liquid crystal can include multiple threshold voltages, such as positive and negative threshold voltages. When the difference (i.e., voltage difference) between the driving level at the strip-shaped driving electrode 104a and the level at the common electrode reaches a positive threshold voltage, the liquid crystal between the strip-shaped electrode 104a and the common electrode can deflect, forming a light-transmitting region. When the difference (i.e., voltage difference) between the driving level at the strip-shaped driving electrode 104a and the level at the common electrode reaches a negative threshold voltage, the liquid crystal between the strip-shaped electrode 104a and the common electrode can deflect, forming a light-transmitting region.

[0075] The difference between the driving level at the strip driving electrode 104a and the level at the common electrode (i.e., the voltage difference) is equal to the liquid crystal's shut-off voltage, which cannot cause the liquid crystal between the strip electrode 104a and the common electrode to deflect and form a light-blocking area.

[0076] Figure 3 An exemplary embodiment of this disclosure provides a grating adjustment device that can provide driving signals to multiple driving electrodes in a liquid crystal grating. In this embodiment, the liquid crystal grating can be disposed on the light-emitting side of the display panel, or on the side opposite to the light-emitting side of the display panel.

[0077] Please combine Figure 3 The grating adjustment device 20 may include a processing module 20A and a grating driving module 20B. The processing module 20A may have computing capabilities. The grating driving module 20B may have the ability to output driving signals, and may output driving signals to each driving electrode of the liquid crystal grating 10 to realize the formation of a grating structure by driving the liquid crystal grating.

[0078] The processing module 20A can acquire the coordinates of the human eye and determine the range of the liquid crystal grating to be opened based on the coordinates of the human eye; based on the range of the liquid crystal grating to be opened, a target indication signal is generated, and the target indication signal can indicate the first driving electrode in the range of the liquid crystal grating to be opened.

[0079] The grating driving module 20B can receive the target indication signal, output a first driving signal to the first driving electrode, and output a second driving signal to the second driving electrode of the liquid crystal grating outside the area of ​​the liquid crystal grating to be opened. Both the first and second driving signals are generated based on the clock signal of the grating driving module.

[0080] Optionally, both the first driving signal and the second driving signal are pulse signals, and the frequencies of the first driving signal and the second driving signal are the same as the frequency of the clock signal of the grating driving module.

[0081] Based on the grating driving module provided in any of the above embodiments, the processing module 20A can acquire the eye coordinates. The processing module 20A can receive the eye coordinates provided by the eye-tracking device. Alternatively, the processing module 20A can query the eye coordinates from the eye-tracking device.

[0082] Eye-tracking devices are capable of determining the coordinates of a user's eyes while viewing a display panel. A typical eye-tracking device includes a camera module and a processing module. The camera module captures images of the user, and the processing module calculates the user's eye coordinates, such as the coordinates of the left and right eyes, based on the captured images.

[0083] In some examples, the processing module in the eye-tracking device may include a memory-based computing chip with both storage and computing capabilities. This approach can accelerate the determination of eye coordinates, shorten the time it takes for the processing module 20A to acquire eye coordinates, and reduce latency. Optionally, the memory-based computing chip may include on-chip static random-access memory (SRAM), a memory array, on-chip flash memory (FLASH), a logic control unit, a general-purpose input / output (GPIO) interface, etc.

[0084] The eye coordinates obtained by processing module 20A are coordinates in a preset coordinate system. Optionally, Figure 4 An exemplary coordinate system is shown. The midpoint of the central axis of the display panel is used as the origin, the length direction of the display panel is the x-axis, the thickness direction of the display panel is the y-axis, and the width direction of the display panel is the z-axis.

[0085] The eye coordinates obtained by the processing module 20A can include the x-axis and y-axis coordinates of the pupils of both eyes. For example... Figure 4 As shown, the distance between the liquid crystal grating and the display panel is h. The processing module 20A can store target relationships. In working mode, the processing module 20A can calculate the range of the liquid crystal grating to be opened based on the target relationships and the human eye coordinates. Figure 4 In the diagram, point L represents the coordinates of the left pupil, and point P represents the coordinates of the right pupil. The processing module 20A can calculate the range of the liquid crystal grating to be opened based on the target relationship and the human eye coordinates. Figure 4 Multiple white areas exist within the liquid crystal grating 10. Each white area can be considered a transmissive region within the range of the liquid crystal grating to be opened. Figure 4 In the liquid crystal grating 10, multiple black areas are within the range of the closed liquid crystal grating, and a black area can be regarded as a blocking area within the range of the closed liquid crystal grating.

[0086] Optionally, the user can observe the display panel within the range of the optimal viewing distance D corresponding to the display panel. This embodiment of the disclosure does not specifically limit the user's position when observing the display panel.

[0087] In the area of ​​the liquid crystal grating to be opened determined by the processing module 20A, the liquid crystal is deflected to form a light-transmitting area. In other parts of the liquid crystal grating 10 outside the area to be opened, the liquid crystal is not deflected, forming a blocking area. This grating structure ensures that at point L, only the image presented by the left-eye pixels is visible, while the image presented by the right-eye pixels is not. Similarly, at point R, only the image presented by the right-eye pixels is visible, while the image presented by the left-eye pixels is not. This results in a better stereoscopic effect observed by the user.

[0088] The strip-shaped driving electrode within the area of ​​the liquid crystal grating to be opened is denoted as the first driving electrode, and the strip-shaped electrodes in the liquid crystal grating 10 other than the first driving electrode (i.e., the strip-shaped driving electrode within the area of ​​the liquid crystal grating to be opened) are denoted as the second driving electrode. After determining the area of ​​the liquid crystal grating to be opened, the processing module 20A generates a target indication signal based on the area of ​​the liquid crystal grating to be opened. The target indication signal can indicate the first driving electrode among multiple driving electrodes. Optionally, the target indication signal can also indicate the second driving electrode among multiple driving electrodes. For example, the target indication signal includes indication signals corresponding to each driving electrode. For any driving electrode, if the indication signal of the driving electrode is the first signal, it can reflect that the driving electrode is the first driving electrode, that is, the driving electrode within the area of ​​the liquid crystal grating to be opened; if the indication signal of the driving electrode is the second signal, it can reflect that the driving electrode is the aforementioned second driving electrode, that is, the driving electrode not belonging to the area of ​​the liquid crystal grating to be opened. Here, the first signal and the second signal are signals with different levels.

[0089] Optionally, the processing module 20A can also send a display type signal to the raster driving module 20B, which is used to characterize the display type. The display type can be a 3D display type or a 2D display type. The raster driving module 20B can characterize the 3D display type according to the display type signal, and according to the aforementioned target indication signal, output a first driving signal to the first driving electrode and a second driving signal to the second driving electrode in the liquid crystal raster excluding the area of ​​the liquid crystal raster to be opened.

[0090] The grating driving module 20B can characterize the 2D display type according to the display type signal, and drive the liquid crystal grating 10 to not form a grating structure. Optionally, the grating driving module 20B can output a first driving signal to each driving electrode, causing each liquid crystal to deflect and form a light-transmitting area.

[0091] The grating driving module 20B can be implemented as the grating driving module provided in the embodiments of this disclosure. Figure 5 An exemplary embodiment of a grating driving module provided in this disclosure is shown. The grating driving module may include a control unit 201 and a level conversion unit 202. The control unit 201 is connected to the level conversion unit 202. The level conversion unit 202 is connected to each driving electrode in the liquid crystal grating 10. The control unit 201 may output control signals to the level conversion unit 202.

[0092] The control unit 201 can be connected to the aforementioned processing module 20A and can receive a target indication signal. The control unit 201 is configured to: receive the target indication signal; and, based on the target indication signal, generate a first control signal corresponding to the first driving electrode and a second control signal corresponding to the second driving electrode. The amplitudes of both the first and second control signals are the same as the amplitude of the clock signal, and the frequencies of both the first and second control signals are the same as the frequency of the clock signal.

[0093] Optionally, the amplitude and frequency of both the first and second control signals are the same as those of the clock signal. However, the starting level of the first control signal differs from that of the second control signal. In some examples, the waveform of one of the first and second control signals is the same as that of the clock signal, while the waveform of the other control signal is complementary to (i.e., inverted) the waveform of the clock signal. In other examples, one of the first and second control signals is the clock signal, and the other control signal is a complementary signal to the clock signal.

[0094] The level conversion unit 202 is configured to: receive a first control signal corresponding to the first driving electrode, perform level conversion processing on the first control signal to obtain a first driving signal, and provide the first driving signal to the first driving electrode; and receive a second control signal corresponding to the second driving electrode and provide the second driving signal to the second driving electrode.

[0095] Generally, the level of the control signal output by the control unit is difficult to reach the turn-on voltage of the liquid crystal. Therefore, the level conversion unit 202 can adjust the amplitude of the first control signal and the second control signal output by the control unit 201, such as increasing the signal amplitude by the same adjustment ratio.

[0096] For any one of the strip-shaped driving electrodes 104a, the control unit 201 can output the aforementioned first control signal to the level conversion unit 202. When the level conversion unit 202 performs level conversion processing on the first control signal, it can increase the amplitude of the first control signal to obtain a first driving signal, which is then output to the strip-shaped driving electrode 104a. In this case, at any given time, the voltage difference between the driving voltage at the strip-shaped driving electrode 104a and the voltage at the common electrode can be the same as any one of the turn-on voltages of the liquid crystal, causing the liquid crystal between the strip-shaped electrode 104a and the common electrode to deflect, forming a light-transmitting area.

[0097] In another possible scenario, the control unit 201 can output a second control signal to the level conversion unit 202. The level conversion unit 202 can increase the amplitude of the second control signal to obtain a second driving signal, which is then output to the strip driving electrode 104a. In this scenario, at any given time, the voltage difference between the driving voltage at the strip driving electrode 104a and the voltage at the common electrode is equal to the liquid crystal's turn-off voltage, preventing the liquid crystal between the strip electrode 104a and the common electrode from deflecting and forming a light-blocking area.

[0098] In one possible implementation, the control unit 201 includes a clock circuit that can output a clock signal. The control unit 201 can output a clock signal VV to the level conversion unit 202.

[0099] After receiving the clock signal VV, the level conversion unit 202 performs level conversion processing on the clock signal VV to obtain the reference pulse signal VCOM, and outputs the reference pulse signal VCOM to the common electrode layer 103. The level conversion processing involves increasing the amplitude of the clock signal VV. For example, the low level of the clock signal VV may be 0V, and the high level may be 5V, 3.3V, or 1.8V. Optionally, the low level of the reference pulse signal VCOM may be 0V, and the high level may be 5.5V.

[0100] Figure 6A An exemplary schematic diagram of a reference pulse signal and a drive voltage signal is shown. Taking any one of the strip drive electrodes 104a as an example, if the strip drive electrode 104a receives the first drive signal S1, please refer to... Figure 6A At any given moment tm, the voltage difference between the level of the first driving signal S1 and the level of the reference pulse signal VCOM is the same as any turn-on voltage of the liquid crystal, which can cause the liquid crystal between the strip driving electrode 104a and the common electrode layer 103 to deflect, thereby forming a light-transmitting area, that is, the grating corresponding to the strip driving electrode is in the open state.

[0101] In some examples, the turn-on voltage of the liquid crystal may include a positive turn-on voltage, such as +5.5V; it may also include a negative turn-on voltage, such as -5.5V.

[0102] For example, when the reference pulse signal VCOM is high (5.5V) and the first driving signal S1 is low (0V), the voltage difference between the level of the first driving signal S1 and the level of the reference pulse signal VCOM is -5.5V. At this time, the liquid crystal driving voltage reaches -5.5V, achieving negative voltage driving of the liquid crystal deflection and forming a light-transmitting area. When the reference pulse signal VCOM is low (0V) and the first driving signal S1 is high (5.5V), the voltage difference between the level of the first driving signal S1 and the level of the reference pulse signal VCOM is +5.5V. At this time, the liquid crystal driving voltage reaches +5.5V, achieving positive voltage driving of the liquid crystal deflection and forming a light-transmitting area.

[0103] Optionally, in the first half of a cycle, the level of the reference pulse signal VCOM is 5.5V and the level of the first drive signal S1 is 0V; in the second half of the cycle, the level of the reference pulse signal VCOM is 0V and the level of the first drive signal S1 is 5.5V. This achieves alternating use of positive pressure driving and negative pressure driving of the liquid crystal deflection in one cycle.

[0104] As can be seen, the grating driving module provided in this application can achieve a relatively stable formation of the light-transmitting region by alternately driving the liquid crystal deflection with positive pressure and negative pressure. This method can prevent liquid crystal fatigue and polarization, and also reduces the complexity of circuit design.

[0105] Figure 6B An exemplary schematic diagram of a reference pulse signal and a drive voltage signal is shown. Taking any one of the strip drive electrodes 104a as an example, if the strip drive electrode 104a receives the second drive signal S2, please refer to... Figure 6B At any given moment tm, the voltage difference between the level of the second driving signal S2 and the level of the reference pulse signal VCOM is the same as the liquid crystal's shut-off voltage, which cannot cause the liquid crystal between the strip driving electrode 104a and the common electrode layer 103 to deflect, thereby forming a light-blocking area, that is, the grating corresponding to the strip driving electrode is in a closed state.

[0106] In some examples, the liquid crystal's shutdown voltage can be 0V. For instance, when the reference pulse signal VCOM is high (5.5V) and the second driving signal S2 is also high (5.5V), the voltage difference between the second driving signal S2 and the reference pulse signal VCOM is 0V, reaching the liquid crystal's shutdown voltage, and the grating corresponding to the strip driving electrode is in the off state. When the reference pulse signal VCOM is low (0V) and the second driving signal S2 is low (0V), the voltage difference between the second driving signal S2 and the reference pulse signal VCOM is also 0V, reaching the liquid crystal's shutdown voltage, and the grating corresponding to the strip driving electrode is in the off state.

[0107] Optionally, in the first half of a cycle, the level of the reference pulse signal VCOM is 5.5V and the level of the second drive signal S2 is 5.5V. In the second half of the cycle, the level of the reference pulse signal VCOM is 0V and the level of the first drive signal S1 is 0V.

[0108] The control unit 201 can generate a control signal corresponding to each first driving electrode, and the control signal corresponding to each first driving electrode is the first control signal. The control unit 201 can generate a control signal corresponding to each second driving electrode, and the control signal corresponding to each second driving electrode is the second control signal.

[0109] The level conversion unit 202 can receive the control signal of each driving electrode and perform level conversion on the control signal of each driving electrode. The level conversion unit 202 can perform level conversion on the first control signal corresponding to each first driving electrode and then output a first driving signal to each first driving electrode. The level conversion unit 202 can perform level conversion on the second control signal corresponding to each second driving electrode and then output a second driving signal to each second driving electrode.

[0110] In some examples, Figure 7 A schematic diagram of a grating driving module is shown. The control unit 201 may include a main controller 301. The level conversion unit 202 may include a level conversion circuit 302. The main controller 301 may be connected to a power supply module, which may provide a first operating voltage to the main controller 301. The level conversion circuit 302 may be connected to the power supply module, which may provide a second operating voltage to the level conversion circuit 302. Optionally, the grating driving module may include the aforementioned power supply module. For example, the first operating voltage is 3.3V, and the second operating voltage is 5.5V.

[0111] In one possible application scenario, the main controller 301 includes N first GPIO interfaces 3A and 1 second GPIO interface 3B, where N is a positive integer greater than 2. The liquid crystal grating 10 may include M strip driving electrodes, where M can be a positive integer less than or equal to N.

[0112] Taking M equals N as an example, the N strip driving electrodes in the liquid crystal grating 10 correspond one-to-one with N first GPIO interfaces, each first GPIO interface being used to output the control signal for the corresponding strip driving electrode. The second GPIO interface is used to output the aforementioned reference pulse signal VCOM. Optionally, the frequency of the reference pulse signal is 120Hz.

[0113] The level conversion circuit 302 can be connected to each of the first GPIO interfaces 3A and can receive the control signals corresponding to each bar drive electrode. The level conversion circuit 302 can also be connected to the second GPIO interface 3B and can receive the reference pulse signal.

[0114] The level conversion circuit 302 may have N first output terminals 4A and one second output terminal 4B. The N first output terminals 4A correspond one-to-one with the N strip drive electrodes. Each first output terminal 4A is connected to its corresponding strip drive electrode via a drive line. Each first output terminal 4A is used to output a drive signal for its corresponding strip drive electrode. When the level conversion circuit 302 receives a first control signal corresponding to a first drive electrode, the first output terminal 4A corresponding to the first drive electrode outputs a first drive signal to the first drive electrode. When the level conversion circuit 302 receives a second control signal corresponding to a second drive electrode, the first output terminal 4A corresponding to the second drive electrode outputs a second drive signal to the second drive electrode.

[0115] The second output terminal 4B of the level conversion circuit 302 is connected to the common electrode layer 103 of the liquid crystal grating 10 through a driving line, and the second output terminal 4B is used to output the aforementioned reference pulse signal.

[0116] Optionally, the main controller 301 can be communicatively connected to the processing module 20A and can receive the aforementioned target indication signal sent by the processing module 20A. Optionally, the main controller 301 and the processing module 20A can use USB 2.0 communication technology, such as the CDC-ACM protocol in USB 2.0 communication technology.

[0117] Based on the grating adjustment device provided in any of the above embodiments, the processing module 20A can be configured with a test mode. In the test mode, the processing module 20A can determine the aforementioned target relationship.

[0118] In test mode, processing module 20A can acquire the human eye coordinates and, based on these coordinates and a preset initial relationship, determine the range of the liquid crystal grating to be activated. Processing module 20A can send a preset display indication signal to the display panel, which instructs each left-eye pixel on the display panel to display a first color and each right-eye pixel to display a second color. It should be understood that the first color and the second color are not the same color. Optionally, the first color can be red, and the second color can be green.

[0119] The processing module 20A can acquire first detection information and second detection information. The first detection information includes a first detection result of color detection at the left eye coordinate, and the second detection information includes a second detection result of color detection at the right eye coordinate.

[0120] In some examples, the color detection device can be placed at the left eye coordinates provided by the eye-tracking device to detect color and output a first detection result. The color detection device can also be placed at the right eye coordinates provided by the eye-tracking device and output a second detection result.

[0121] In other examples, the tester can observe the display panel at the left-eye coordinates provided by the eye-tracking device and input the first detection result into the host computer. The host computer can then send the first detection result to the processing module 20A. The tester can also observe the display panel at the right-eye coordinates provided by the eye-tracking device and input the second detection result into the host computer. The host computer can then send the second detection result to the processing module 20A.

[0122] In one possible scenario, if the first detection result indicates that the second color is detected, or the second detection result indicates that the first color is detected, the range of the liquid crystal grating to be opened is adjusted, and the detection information is reacquired until the first detection result does not indicate that the second color is detected, and the second detection result does not indicate that the first color is detected. The preset target relationship is then generated based on the last adjusted range of the liquid crystal grating to be opened and the left eye coordinates and the right eye coordinates.

[0123] In some examples, the first detection result received by the processing module 20A can characterize the detected color in the first detection information. If the first detection result includes a second color, then the first detection result can indicate that the second color has been detected. If the first detection result does not include a second color, then the first detection result can indicate that the second color has not been detected.

[0124] Similarly, in the second detection information received by the processing module 20A, the second detection result can represent the detected color. If the second detection result includes the first color, then the second detection result can indicate that the first color has been detected. If the second detection result does not include the first color, then the second detection result can indicate that the first color has not been detected.

[0125] In other examples, the first detection information received by processing module 20A may include a first detection result that represents the number of detected colors. If the number represented by the first detection result is 2, then the first detection result may indicate that a second color has been detected. If the number represented by the first detection result is 1, then the first detection result may indicate that no second color has been detected.

[0126] Similarly, in the second detection information received by the processing module 20A, the second detection result can represent the number of detected colors. If the number represented by the second detection result is 2, then the second detection result can indicate that the first color was detected. If the number represented by the second detection result is 1, then the second detection result can indicate that the first color was not detected.

[0127] If the first detection result indicates that the second color is detected, or if the second detection result indicates that the first color is detected, crosstalk may occur, resulting in a poor stereoscopic effect.

[0128] If the first detection result indicates that the second color is not detected, and the second detection result indicates that the first color is not detected, it can be seen that no crosstalk has occurred and the stereoscopic effect is good.

[0129] The processing module 20A can perform the following operations cyclically, either when the first detection result indicates that the second color has been detected, or when the second detection result indicates that the first color has been detected: adjusting the range of the most recently determined liquid crystal grating to be opened, and generating a corresponding target indication signal to the grating driving module 20B, thereby adjusting the grating structure formed by the liquid crystal grating. Then, the processing module 20A can reacquire the first detection information and the second detection information, determine whether the first detection result in the first detection information indicates that the second color has been detected, and determine whether the second detection result in the second detection information indicates that the first color has been detected, until the first detection result in the reacquired first detection information does not indicate that the second color has been detected, and the second detection result in the reacquired second detection information does not indicate that the first color has been detected.

[0130] The range of the liquid crystal grating to be turned on after the last adjustment can be used as the ideal range corresponding to the human eye coordinates.

[0131] Based on the above description, the processing module 20A can acquire the coordinates of the human eye multiple times and determine the ideal range corresponding to each human eye.

[0132] Based on multiple human eye coordinates and the ideal range corresponding to each human eye coordinate, the processing module 20A can generate a target relationship through fitting, which is used to drive the liquid crystal grating. It can be understood that the processing module 20A can, in operating mode, use this target relationship to determine the range of the liquid crystal grating to be activated.

[0133] Based on the same inventive concept, embodiments of this disclosure also provide a display device. For example... Figure 8 As shown, the display device may include a display panel 501, a liquid crystal grating 10, and a grating adjustment device 20 provided in this embodiment. The liquid crystal grating 10 is disposed opposite to the display panel 501, and the grating adjustment device 20 is connected to the liquid crystal grating 10.

[0134] In addition, embodiments of this disclosure also provide a 3D display system, such as Figure 9 As shown, the 3D display system may include an eye-tracking device and the aforementioned display device. An exemplary display device may include a liquid crystal grating 10, a display panel 501, and a grating adjustment device 20. The grating adjustment device 20 may include the grating driving module provided in this embodiment of the present disclosure, and the aforementioned processing module 20A. The eye-tracking device may be used to output eye coordinates and provide them to the processing module 20A.

[0135] Based on the above description, this disclosure also provides a grating adjustment method, which can be used to drive a liquid crystal grating. This method can be executed by a 3D display system or a display device. Figure 10 As shown, the method may include the following steps:

[0136] S1001, obtain the coordinates of the human eye.

[0137] S1002, Based on the human eye coordinates, determine the range of the liquid crystal grating to be opened.

[0138] S1003, provide a first driving signal to the first driving electrode in the range of the liquid crystal grating to be opened.

[0139] S1004, a second driving signal is provided to the second driving electrode in the liquid crystal grating other than the first driving electrode.

[0140] Both the first driving signal and the second driving signal are generated based on the clock signal of the grating driving module.

[0141] Optionally, both the first driving signal and the second driving signal are pulse signals, and the frequencies of the first driving signal and the second driving signal are the same as the frequency of the clock signal of the grating driving module.

[0142] In one possible implementation, the method further includes:

[0143] Provide a reference pulse signal to the liquid crystal grating;

[0144] Wherein, the difference between the level of the first driving signal at any moment and the level of the reference pulse signal at any moment is the same as any turn-on voltage of the liquid crystal;

[0145] The difference between the level of the second driving signal at any given moment and the level of the reference pulse signal at any given moment is the same as the liquid crystal's shut-off voltage.

[0146] In one possible implementation, the human eye coordinates include left eye coordinates and right eye coordinates;

[0147] Determining the range of the liquid crystal grating to be opened based on the human eye coordinates includes:

[0148] Based on the preset target relationship, the left eye coordinates, and the right eye coordinates, the range of the liquid crystal grating to be activated is determined.

[0149] Furthermore, embodiments of this disclosure also provide a grating testing method, which can be used to determine the aforementioned target relationship. For example... Figure 11 As shown, the method may include the following steps:

[0150] S1101, a preset display indication signal is sent to the display panel, the preset display indication signal being used to instruct each left-eye pixel in the display panel to display a first color and each right-eye pixel to display a second color.

[0151] S1101, Obtain human eye coordinates, wherein the human eye coordinates include left eye coordinates and right eye coordinates;

[0152] S1102, based on the preset initial relationship, the left eye coordinates and the right eye coordinates, determine the range of the liquid crystal grating to be turned on.

[0153] S1103, a first driving signal is provided to the first driving electrode in the range of the liquid crystal grating to be opened, and a second driving signal is provided to the second driving electrode in the liquid crystal grating other than the first driving electrode.

[0154] S1104, acquire first detection information and second detection information, wherein the first detection information includes a first detection result of color detection at the left eye coordinate, and the second detection information includes a second detection result of color detection at the right eye coordinate.

[0155] S1105, if the first detection result indicates that the second color is detected, or the second detection result indicates that the first color is detected, adjust the range of the liquid crystal grating to be opened, and reacquire the detection information until the first detection result does not indicate that the second color is detected, and the second detection result does not indicate that the first color is detected.

[0156] S1106, Based on the last adjusted range of the liquid crystal grating to be opened and the left eye coordinates and the right eye coordinates, a target relationship is generated, wherein the target relationship is used to drive the liquid crystal grating.

[0157] Those skilled in the art will understand that embodiments of this disclosure can be provided as methods, systems, or computer program products. Therefore, this disclosure can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this disclosure can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0158] This disclosure is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to this disclosure. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0159] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0160] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0161] Obviously, those skilled in the art can make various modifications and variations to this disclosure without departing from its spirit and scope. Therefore, if such modifications and variations fall within the scope of the claims of this disclosure and their equivalents, this disclosure is also intended to include such modifications and variations.

Claims

1. A grating driving module, characterized in that, Used to provide driving signals to multiple driving electrodes in a liquid crystal grating; the grating driving module is connected to a processing module, the processing module being configured to: acquire human eye coordinates, and determine the range of the liquid crystal grating to be opened based on the human eye coordinates; and generate a target indication signal based on the range of the liquid crystal grating to be opened, the target indication signal indicating the first driving electrode in the range of the liquid crystal grating to be opened; The grating driving module includes a control unit and a level conversion unit. The control unit is connected to the level conversion unit, and the level conversion unit is connected to each driving electrode in the liquid crystal grating. The control unit is used to output a control signal to the level conversion unit. The control unit includes a clock circuit, which is used to output a clock signal. The control unit is connected to the processing module. The control unit is used to receive the target indication information, and generate a first control signal corresponding to the first driving electrode and a second control signal corresponding to the second driving electrode according to the display type signal characterizing the 3D display type. The second driving electrode is the driving electrode in the liquid crystal grating other than the range of the liquid crystal grating to be opened. The display type signal is provided by the processing module. Furthermore, the amplitudes of the first control signal and the second control signal are the same as the amplitude of the clock signal, and the frequencies of the first control signal and the second control signal are the same as the frequency of the clock signal; the waveform of one of the first control signal and the second control signal is the same as the waveform of the clock signal, and the waveform of the other control signal is complementary to the waveform of the clock signal. The level conversion unit is used to: receive the clock signal, perform level conversion processing on the clock signal to obtain a reference pulse signal, and output the reference pulse signal to the common electrode layer of the liquid crystal grating; The first control signal is processed by level conversion to obtain a first driving signal, and the first driving signal is provided to the first driving electrode so that the liquid crystal between the first driving electrode and the common electrode layer is deflected under the action of the reference pulse signal and the first driving signal and forms a light-transmitting area. After level conversion of the second control signal, a second driving signal is obtained, and the second driving signal is provided to the second driving electrode so that the liquid crystal between the second driving electrode and the common electrode layer is deflected and a light-shielding area is formed.

2. The grating driving module as described in claim 1, characterized in that, Both the first driving signal and the second driving signal are pulse signals, and the frequencies of the first driving signal and the second driving signal are the same as the frequency of the clock signal of the grating driving module.

3. The grating driving module as described in claim 1, characterized in that, The level conversion unit includes multiple first output terminals and second output terminals; The plurality of first output terminals and the plurality of driving electrodes correspond one-to-one, and the first output terminal is connected to the corresponding driving electrode. The second output terminal is connected to the common electrode.

4. The grating driving module as described in claim 1, characterized in that, The difference between the level of the first driving signal at any moment and the level of the reference pulse signal at any moment is the same as any turn-on voltage of the liquid crystal. The difference between the level of the second driving signal at any given moment and the level of the reference pulse signal at any given moment is the same as the liquid crystal's shut-off voltage.

5. A grating adjustment device, characterized in that, It includes a processing module and a grating driving module as described in any one of claims 1-4; the grating driving module is used to provide driving signals to multiple driving electrodes in the liquid crystal grating; The processing module is configured to: acquire human eye coordinates, and determine the range of the liquid crystal grating to be opened based on the human eye coordinates; and generate a target indication signal based on the range of the liquid crystal grating to be opened, wherein the target indication signal indicates the first driving electrode in the range of the liquid crystal grating to be opened.

6. The grating adjustment device as described in claim 5, characterized in that, The human eye coordinates include left eye coordinates and right eye coordinates; the liquid crystal grating is positioned directly opposite the display panel, and the display panel includes left eye pixels and right eye pixels; The processing module is specifically configured as follows: In working mode, the range of the liquid crystal grating to be activated is determined based on the preset target relationship, the left eye coordinates, and the right eye coordinates.

7. The grating adjustment device as described in claim 6, characterized in that, The processing module is configured as follows: A preset display indication signal is sent to the display panel, the preset display indication signal being used to instruct each left-eye pixel in the display panel to display a first color and each right-eye pixel to display a second color; Acquire first detection information and second detection information, wherein the first detection information includes a first detection result of color detection at the left eye coordinate, and the second detection information includes a second detection result of color detection at the right eye coordinate; If the first detection result indicates that the second color is detected, or the second detection result indicates that the first color is detected, the range of the liquid crystal grating to be opened is adjusted, and the detection information is reacquired until the first detection result does not indicate that the second color is detected, and the second detection result does not indicate that the first color is detected. The preset target relationship is generated based on the last adjusted range of the liquid crystal grating to be opened and the left eye coordinates and the right eye coordinates.

8. A display device, characterized in that, The device includes a display panel, a liquid crystal grating, and a grating adjustment device as described in any one of claims 5-7, wherein the liquid crystal grating is disposed opposite to the display panel, and the grating adjustment device is connected to the liquid crystal grating.

9. A 3D display system, characterized in that, It includes an eye-tracking device and a display device as described in claim 8, wherein the eye-tracking device is used to output the eye coordinates.

10. A grating adjustment method, characterized in that, The method for driving a liquid crystal grating includes: Obtain the coordinates of the human eye; Based on the human eye coordinates, determine the range of the liquid crystal grating to be opened; A first driving signal is provided to the first driving electrode in the range of the liquid crystal grating to be opened; A second driving signal is provided to the second driving electrode in the liquid crystal grating, excluding the first driving electrode; The first driving signal and the second driving signal are provided by the grating driving module as described in any one of claims 1-4.

11. The method as described in claim 10, characterized in that, Both the first driving signal and the second driving signal are pulse signals, and the frequencies of the first driving signal and the second driving signal are the same as the frequency of the clock signal of the grating driving module.

12. The method as described in claim 10, characterized in that, Both the first driving signal and the second driving signal are pulse signals; the method further includes: Provide a reference pulse signal to the liquid crystal grating; Wherein, the difference between the level of the first driving signal at any moment and the level of the reference pulse signal at any moment is the same as any turn-on voltage of the liquid crystal; The difference between the level of the second driving signal at any given moment and the level of the reference pulse signal at any given moment is the same as the liquid crystal's shut-off voltage.

13. The method as described in claim 10 or 11, characterized in that, The human eye coordinates include left eye coordinates and right eye coordinates; Determining the range of the liquid crystal grating to be opened based on the human eye coordinates includes: Based on the preset target relationship, the left eye coordinates, and the right eye coordinates, the range of the liquid crystal grating to be activated is determined.

14. A computer storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the steps of the method as described in any one of claims 10 to 13.

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