Three-dimensional display device

Abstract

The invention relates to a three-dimensional display device which comprises a main control chip and a light valve module electrically connected with the main control chip. And the main control chip is used for calculating the driving signal transmitted to the light valve module, performing digital-to-analog conversion on the driving signal and then transmitting the driving signal to the light valve module so as to control the current polarization state of the light valve module. No other chip is arranged between the main control chip and the light valve module, and calculation and digital-to-analog conversion processing of the driving signal can be realized through one main control chip, so that the arrangement of a chip required for digital-to-analog conversion of the signal is omitted; visibly, in the three-dimensional display device provided by the invention, the control of the working state of the light valve module in the three-dimensional display device can be realized through a relatively small number of chips, so that the use number of hardware of the three-dimensional display device is simplified, the manufacturing cost of the three-dimensional display device is reduced, and the production efficiency of the three-dimensional display device is improved. Meanwhile, the display effect of the three-dimensional display device can be guaranteed, and the popularization rate of the three-dimensional display device can be increased.

Description

Technical Field

[0001] The present application relates to the field of display technologies, and particularly to a three-dimensional display device. Background Art

[0002] Currently, in technical solutions related to virtual reality, the stereoscopic display effect of a desktop VR (Virtual Reality) all-in-one machine is vivid and is highly favored by university experimental training courses. However, due to the high manufacturing cost of the desktop VR all-in-one machine, it is difficult to popularize in universities, and it is even more difficult for ordinary users to experience the vivid display experience brought by the VR all-in-one machine. Therefore, how to reduce the manufacturing cost of the all-in-one machine is an urgent problem to be solved in this field. Summary of the Invention

[0003] Based on this, in view of the above technical problems, it is necessary to provide a three-dimensional display device that can reduce the manufacturing cost of the all-in-one machine.

[0004] The present application provides a three-dimensional display device, including a main control chip and a light valve module electrically connected to the main control chip;

[0005] The main control chip is configured to calculate a driving signal transmitted to the light valve module, and perform digital-to-analog conversion on the driving signal and then transmit it to the light valve module to control the current polarization state of the light valve module.

[0006] In one embodiment, the polarization state of the light valve module at least includes a first polarization state for transmitting first polarized light and a second polarization state for transmitting second polarized light; the polarization directions of the first polarized light and the second polarized light intersect.

[0007] In one embodiment, along the thickness direction of the three-dimensional display device, the light valve module includes a first liquid crystal light valve and a second liquid crystal light valve stacked;

[0008] When the light valve module is in the first polarization state, the first liquid crystal light valve rotates by a first preset angle, the second liquid crystal light valve rotates by a second preset angle, and the second liquid crystal light valve is in a fully transparent state relative to the first liquid crystal light valve;

[0009] When the light valve module is in the second polarization state, the first liquid crystal light valve rotates by a third preset angle, the second liquid crystal light valve rotates by a fourth preset angle, and the first liquid crystal light valve is in a fully transparent state relative to the second liquid crystal light valve.

[0010] In one embodiment, the driving signal at least includes a first signal and a second signal;

[0011] The first signal is used to control the first liquid crystal light valve to be in the first preset angle or the third preset angle;

[0012] The second signal is used to control the second liquid crystal light valve to be in the second preset angle or the fourth preset angle.

[0013] In one embodiment, the light valve module includes the polarization state for transmitting the left-eye image and the polarization state for transmitting the right-eye image;

[0014] When the light valve module is in the polarization state for transmitting the left-eye image, the 3D display device displays the left-eye image; when the light valve module is in the polarization state for transmitting the right-eye image, the 3D display device displays the right-eye image;

[0015] By alternately displaying the left-eye image and the right-eye image, the display of the 3D image of the 3D display device is realized.

[0016] In one embodiment, it further includes a backlight module, a graphics card module, and a display control board;

[0017] The backlight module, the graphics card module, and the display control board are respectively electrically connected to the main control chip; the main control chip is used to control the light-emitting state of the backlight module and the polarization state of the light valve module according to the electrical signals transmitted by the graphics card module and the display control board received.

[0018] In one embodiment, the main control chip is further used to parse the image data of the 3D image to be displayed transmitted by the graphics card module to confirm whether the image data is left-eye data or right-eye data.

[0019] In one embodiment, it further includes a signal amplification module;

[0020] The signal amplification module is electrically connected between the main control chip and the light valve module and is used to adjust the voltage value of the drive signal.

[0021] In one embodiment, the signal amplification module is a dual-channel H-bridge circuit.

[0022] In one embodiment, the signal amplification module includes a first-stage amplification module and a second-stage amplification module;

[0023] The first-stage amplification module is electrically connected between the main control chip and the second-stage amplification module, and the second-stage amplification module is electrically connected to the light valve module;

[0024] The first - stage amplification module is used to adjust the first voltage value V1 of the received drive signal to a second voltage value V2, and the second - stage amplification module is used to adjust the received second voltage value V2 to a third voltage value V3, where |V1| < |V2| < |V3|.

[0025] In one embodiment, the first - stage amplification module is a dual - channel operational amplifier non - inverting amplifier.

[0026] In one embodiment, the second - stage amplification module includes at least two driving units, and each driving unit controls the polarization state of a partial area of the light - valve module.

[0027] In one embodiment, along the thickness direction of the three - dimensional display device, the light - valve module includes a first liquid - crystal light - valve and a second liquid - crystal light - valve arranged in a stacked manner;

[0028] The second - stage amplification module includes at least a first driving unit and a second driving unit. The first driving unit is used to control the polarization state of the first liquid - crystal light - valve in the light - valve module, and the second driving unit is used to control the polarization state of the second liquid - crystal light - valve in the light - valve module.

[0029] In the above - mentioned three - dimensional display device, by directly electrically connecting the main control chip inside it to the light - valve module, based on this internal structure of the three - dimensional display device, the main control chip is used to calculate the drive signal to be sent to the light - valve module, and then after digital - to - analog conversion of the calculated drive signal, it is transmitted to the light - valve module to directly control the polarization state of the light - valve module through the drive signal. It can be seen that no other chips are set between the main control chip and the light - valve module. Through one main control chip, the calculation of the drive signal and the digital - to - analog conversion process can be realized, thus saving the setting of the chips required for digital - to - analog conversion of the signal. It can be seen that in the three - dimensional display device provided by the present application, through a smaller number of chip settings, the control of the working state of the light - valve module in the three - dimensional display device can be realized, simplifying the number of hardware used in the three - dimensional display device, which is beneficial to reducing the manufacturing cost of the three - dimensional display device. At the same time, it can also ensure the display effect of the three - dimensional display device and is conducive to improving the popularity rate of the three - dimensional display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0031] Figure 1Shown is a schematic diagram of the module architecture of a three-dimensional display device according to an embodiment of the prior art;

[0032] Figure 2 Shown is a schematic diagram of a three-dimensional display device according to an embodiment of the present application;

[0033] Figure 3 Shown is a schematic diagram of the module architecture of a three-dimensional display device according to an embodiment of the present application;

[0034] Figure 4 Shown is a schematic diagram of a light valve module according to an embodiment of the present application;

[0035] Figure 5 Shown is another schematic diagram of the module architecture of a three-dimensional display device according to an embodiment of the present application;

[0036] Figure 6 Shown is yet another schematic diagram of the module architecture of a three-dimensional display device according to an embodiment of the present application;

[0037] Figure 7 Shown is a schematic diagram of a second-stage amplification module according to an embodiment of the present application. Detailed implementation manners

[0038] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0039] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be intermediate elements at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0040] In this document, spatially related terms such as "upper" and "lower" are defined with reference to the drawings. Therefore, it will be understood that "upper" and "lower" can be used interchangeably. It will be understood that when a layer is referred to as being "on" another layer, it can be directly formed on the other layer or there may also be an intermediate layer. Therefore, it will be understood that when a layer is referred to as being "directly on" another layer, no intermediate layer is inserted therebetween.

[0041] In the accompanying drawings, in order to clearly illustrate, the dimensions of layers and regions may be exaggerated. It is understood that when a layer or element is referred to as being "on" another layer or substrate, the layer or element may be directly on the said another layer or substrate, or there may also be an intermediate layer. Additionally, it is also understood that when a layer is referred to as being "between" two layers, the layer may be the only layer between the said two layers, or there may also be one or more intermediate layers. Additionally, the same reference numerals always denote the same elements.

[0042] In the following text, although terms such as "first", "second", etc. may be used to describe various components, these components do not necessarily have to be limited to the above terms. The above terms are only used to distinguish one component from another. It will also be understood that expressions used in the singular form include the plural form, unless the singular form of the expression has a clearly different meaning in the context. Furthermore, in the following embodiments, it will also be understood that the terms "comprising" and / or "having" used herein indicate the presence of the stated features or components, but do not exclude the presence or addition of one or more other features or components.

[0043] In the following embodiments, when a layer, region or element is "connected", it can be interpreted that the layer, region or element is not only directly connected but also connected through other constituent elements placed therebetween. For example, when a layer, region, element, etc. are described as being connected or electrically connected, the layer, region, element, etc. can not only be directly connected or directly electrically connected, but can also be connected or electrically connected through another layer, region, element, etc. placed therebetween.

[0044] As used in the application documents, the term "and / or" includes any combination and all combinations of one or more of the related listed items. When an expression such as "at least one (element) among..." is located after a list of elements, it modifies the entire list of elements, rather than an individual element in the list.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this invention belongs. The terms used in the specification of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0046] It should also be understood that terms such as "comprising / including" or "having", etc. specify the presence of the stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0047] Figure 1 Shown is a schematic diagram of the module architecture of a three-dimensional display device according to an embodiment of the prior art; please refer to Figure 1 , as described in the background art, the manufacturing cost of existing VR all-in-ones is relatively high, so the selling price is relatively high and it cannot be popularized among colleges and universities and ordinary users. In an existing VR all-in-one, an optical valve control chip 03 and a DAC (digital to analog converter) chip 04 are provided on the path for the synchronization chip 01 to transmit a drive signal to the optical valve 02. The optical valve control chip 03 is used to analyze whether the drive signal transmitted by the synchronization chip 01 is a left-eye signal or a right-eye signal, and then forward the analyzed left-eye signal or right-eye signal to the DAC chip 04. The DAC chip 04 outputs a corresponding analog signal to the optical valve 02 according to the received left-eye signal or right-eye signal transmitted by the optical valve control chip 03, that is, the DAC chip 04 is used to convert the digital signal transmitted by the optical valve control chip 03 into an analog signal and then send it out; among them, multiple chips including the above two chips in the device do not fully utilize their own functions, greatly increasing the manufacturing cost of the VR all-in-one; for example: the optical valve control chip 03 is only used to analyze and forward the received signal, and the DAC chip 04 is only used to implement digital-to-analog conversion of the signal. Obviously, the functions of these two chips are relatively single, and it will also increase the complexity of the electronic architecture of the VR all-in-one and the assembly difficulty of the VR all-in-one. In addition, a signal amplification chip 05 may be provided between the DAC chip 04 and the optical valve 02 in the VR all-in-one; it can be seen that in the prior art, the number of chips used in the VR all-in-one is relatively large, and the high-purchase-price chips result in a price of the finally manufactured VR all-in-one that is out of reach of users; the hardware architecture of the VR all-in-one with more chips is complex, and the multi-chip linkage will also cause the signal transmission to not be processed in real time, adding great difficulties to both software algorithm synchronization and hardware cost control.

[0048] For the above reasons, there is an urgent need to provide a three-dimensional display device with a new structure that can reduce the number of chips used while ensuring a good display effect of the three-dimensional display device, so as to simultaneously reduce the structural complexity, assembly difficulty and manufacturing cost of the three-dimensional display device.

[0049] Figure 2 Shown is a schematic diagram of a three-dimensional display device provided by an embodiment of the present application, Figure 3 Shown is a schematic diagram of the module architecture of a three-dimensional display device provided by an embodiment of the present application; please refer to Figure 2 and Figure 3 , for the above reasons, the present invention provides a three-dimensional display device 100, including a main control chip 10 and an optical valve module 14 electrically connected to the main control chip 10;

[0050] The main control chip 10 is used to calculate the driving signal transmitted to the light valve module 14, and is also used to perform digital-to-analog conversion on the driving signal and then transmit it to the light valve module 14 to control the current polarization state of the light valve module 14.

[0051] Specifically, the present application provides a three-dimensional display device 100. The component architecture in the three-dimensional display device 100 at least includes a main control chip 10 and a light valve module 14. Among them, the light valve module 14 can be optionally set to be directly electrically connected to the main control chip 10, and no other chip structures are provided in the middle, so as to reduce the number of chips required in the three-dimensional display device 100, which is beneficial to simplifying the assembly steps and manufacturing process of the three-dimensional display device 100, and thus is beneficial to reducing the manufacturing cost of the three-dimensional display device 100.

[0052] The main control chip 10 can be used to calculate the driving signal that needs to be transmitted to the light valve module 14, and this driving signal is used to control the current polarization state of the light valve module 14; specifically, since the driving signal calculated by the main control chip 10 is a digital signal and the digital signal cannot realize the driving of the polarization state of the light valve module 14, therefore, the main control chip 10 will at least perform digital-to-analog conversion processing on the calculated driving signal to convert the driving signal from a digital signal into an analog signal that the light valve module 14 can recognize; then the main control chip 10 can transmit the driving signal converted into an analog signal to the light valve module 14 to realize the control of the driving signal on the polarization state of the light valve module 14.

[0053] Obviously, the three-dimensional display device 100 of the present application can realize the transmission of electrical signals with the light valve module 14 through the main control chip 10 provided therein. The main control chip 10 can calculate the driving signal and perform digital-to-analog conversion on the driving signal. In addition, the main control chip 10 can also control the polarization state of the light valve module 14 in the three-dimensional display device 100 based on the calculated driving signal, that is, the polarization state of the light valve module 14 can be directly controlled by the main control chip 10, without the need to set other control chips between the main control chip 10 and the light valve module 14. In summary, the composition architecture of the three-dimensional display device 100 provided by the present application, on the basis of realizing the three-dimensional picture display of the three-dimensional display device 100, eliminates the need to set the chip required for the digital-to-analog conversion of the signal. That is, the three-dimensional display device 100 provided by the present application can realize the normal operation of the three-dimensional display device by setting a smaller number of chips, thereby reducing the number of chips required to be set in the three-dimensional display device 100, simplifying the number of hardware used in the three-dimensional display device, and facilitating the simplification of the assembly steps and manufacturing process of the three-dimensional display device 100, and reducing the manufacturing cost of the three-dimensional display device 100; the reduction in the manufacturing cost of the three-dimensional display device 100 is conducive to further reducing its market price, thereby facilitating the improvement of the popularity of the three-dimensional display device 100; and due to the reduction in the number of chips, the driving process of realizing the three-dimensional picture display of the three-dimensional display device 100 will also be simplified, which is conducive to improving the picture update efficiency of the three-dimensional display device 100 and improving the picture display effect.

[0054] It should also be added that, in the component architecture of the three-dimensional display device 100 provided in the present application, the main control chip 10 and the light valve module 14 are directly electrically connected, and no other chip structure is provided in between. This is only an optional implementation method provided by the present application, but the present application is not limited thereto. Under the condition of minimizing the increase in production costs, a small amount of chip structures can be added as needed to enhance the picture display effect of the three-dimensional display device 100.

[0055] It should be noted that for the three-dimensional display device provided in this application, the realization of the three-dimensional picture display effect utilizes the binocular parallax principle of the human eye, that is, the left and right eyes of the human eye receive different pictures respectively, and then the brain superimposes and regenerates the image information to form an image with three-dimensional direction effects such as front-back, up-down, left-right, and far-near, enabling people to feel as if they are on the scene when watching a movie or video. Therefore, in order to achieve this three-dimensional picture effect on a flat display device, the left and right eye images are displayed for the user in a time-sharing manner. That is, in one display time period, the left-eye picture is provided to the user's left eye, and in another display time period, the right-eye picture is provided to the user's right eye. Correspondingly, when the three-dimensional display device 100 displays the left-eye picture, the light valve module 14 is in a state of transmitting light to the user's left eye and not transmitting light to the user's right eye; when the three-dimensional display device 100 displays the right-eye picture, the light valve module 14 is in a state of transmitting light to the user's right eye and not transmitting light to the user's left eye. After the user's left and right eyes respectively receive different pictures, the brain superimposes and regenerates the image information in the picture to form an image with a three-dimensional direction effect, so as to achieve the three-dimensional display effect of the picture.

[0056] Please continue to refer to Figure 2 and Figure 3 , in an exemplary embodiment, the polarization states of the light valve module 14 include at least a first polarization state for transmitting a first polarized light and a second polarization state for transmitting a second polarized light; the polarization directions of the first polarized light and the second polarized light intersect.

[0057] Specifically, an alternative implementation provided in this application is that the polarization states of the light valve module 14 include a first polarization state and a second polarization state. Among them, the light valve module 14 in the first polarization state is used to transmit a first polarized light (such as a left-eye polarized light), and the light valve module 14 in the second polarization state is used to transmit a second polarized light (such as a right-eye polarized light). For example, when the three-dimensional display device 100 plays the left-eye picture, the light valve module 14 is used to transmit a first polarized light, and the polarization direction of the first polarized light is the same as the polarization direction of the user's left-eye lens and perpendicular to the polarization direction of the user's right-eye lens, so as to ensure that the user's left eye can clearly see the picture played by the three-dimensional display device 100, and no picture enters the right eye; correspondingly, when the three-dimensional display device 100 plays the right-eye picture, the light valve module 14 is used to transmit a second polarized light, and the polarization direction of the second polarized light is the same as the polarization direction of the user's right-eye lens and perpendicular to the polarization direction of the user's left-eye lens, so as to ensure that the user's right eye can clearly see the picture played by the three-dimensional display device 100, and no picture enters the left eye; thus, different pictures can be seen by the left and right eyes respectively, generating a 3D stereoscopic effect.

[0058] It should be added that the polarization directions of the above-mentioned first polarized light and the second polarized light intersect, specifically, the polarization directions of the first polarized light and the second polarized light may be perpendicular to each other. Correspondingly, the polarization directions of the left lens and the right lens are also perpendicular to each other.

[0059] Figure 4 The following is a schematic diagram of an optical valve module provided by an embodiment of the present application. Please refer to Figures 2 - 4 , in an exemplary embodiment, along the thickness direction of the three-dimensional display device 100, the optical valve module 14 includes a first liquid crystal light valve 43 and a second liquid crystal light valve 44 stacked;

[0060] When the optical valve module 14 is in the first polarization state, the first liquid crystal light valve 43 rotates a first preset angle, the second liquid crystal light valve 44 rotates a second preset angle, and the second liquid crystal light valve 44 is in a fully transmissive state relative to the first liquid crystal light valve 43;

[0061] When the optical valve module 14 is in the second polarization state, the first liquid crystal light valve 43 rotates a third preset angle, the second liquid crystal light valve 44 rotates a fourth preset angle, and the first liquid crystal light valve 43 is in a fully transmissive state relative to the second liquid crystal light valve 44.

[0062] Specifically, an optional implementation manner provided by the present application is to set the optical valve module 14 to include a first liquid crystal light valve 43 and a second liquid crystal light valve 44 stacked. The first polarization state of the optical valve module 14 can be achieved by controlling the first liquid crystal light valve 43 to be in the first polarization state and the second liquid crystal light valve 44 to be in a fully transmissive state. Specifically, it can be achieved by controlling the liquid crystal molecules in the first liquid crystal light valve 43 to rotate a first preset angle, and at the same time controlling the liquid crystal molecules in the second liquid crystal light valve 44 to rotate a second preset angle, so as to control the light transmitted through the optical valve module 14 to the light-emitting surface side of the three-dimensional display device 100 to have a first polarization direction. At this time, the second liquid crystal light valve 44 in the fully transmissive state does not adjust the deflection direction of the light transmitted through it; the second polarization state of the optical valve module 14 can be achieved by controlling the second liquid crystal light valve 44 to be in the second polarization state and the first liquid crystal light valve 43 to be in a fully transmissive state. Specifically, it can be achieved by controlling the liquid crystal molecules in the second liquid crystal light valve 44 to rotate a fourth preset angle, and at the same time controlling the liquid crystal molecules in the first liquid crystal light valve 43 to rotate a third preset angle, so as to control the light transmitted through the optical valve module 14 to the light-emitting surface side of the three-dimensional display device 100 to have a second polarization direction. At this time, the first liquid crystal light valve 43 in the fully transmissive state does not adjust the deflection direction of the light transmitted through it.

[0063] That is to say, the polarization state of the light valve module 14 can be adjusted according to the polarization states and light transmission states of the first liquid crystal light valve 43 and the second liquid crystal light valve 44. Specifically, the rotation angles of the liquid crystal molecules in the first liquid crystal light valve 43 and the second liquid crystal light valve 44 are adjusted. When the first liquid crystal light valve 43 in the light valve module 14 is in the first polarization state and the second liquid crystal light valve 44 is in the fully transparent state, it is used to transmit left-eye polarized light. When the first liquid crystal light valve 43 in the light valve module 14 is in the fully transparent state and the second liquid crystal light valve 44 is in the second polarization state, it is used to transmit right-eye polarized light. Among them, within the time corresponding to a polarization state of the light valve module 14, the deflection directions of the liquid crystal molecules in the first liquid crystal light valve 43 and the liquid crystal molecules in the second liquid crystal light valve 44 are different. In this way, by controlling the rotation states of the liquid crystal molecules in the first liquid crystal light valve 43 and the second liquid crystal light valve 44, the light valve module 14 is made to be in the first polarization state or the second polarization state, so as to control the polarization directions of the light rays transmitted from the light valve module 14 to the light-emitting surface side of the 3D display device 100 differently, so that the light valve module 14 controls the 3D display device 100 to display images for the user's left eye and right eye respectively in the first polarization state and the second polarization state, thereby meeting the requirement that the 3D display device 100 provides different images for different eyes of the user at different times.

[0064] Please continue to refer to Figures 2 - 4 , in an exemplary embodiment, the drive signal at least includes a first signal and a second signal;

[0065] The first signal is used to control the first liquid crystal light valve 43 to be in a first preset angle or a third preset angle;

[0066] The second signal is used to control the second liquid crystal light valve 44 to be in a second preset angle or a fourth preset angle.

[0067] Specifically, the present application also provides an alternative implementation manner. The optical valve module 14 includes a first liquid crystal optical valve 43 and a second liquid crystal optical valve 44 arranged in a stacked manner. The first polarization state of the optical valve module 14 can be achieved by controlling the first liquid crystal optical valve 43 to be in the first polarization state and the second liquid crystal optical valve 44 to be in the fully transparent state. The second polarization state of the optical valve module 14 can be achieved by controlling the second liquid crystal optical valve 44 to be in the second polarization state and the first liquid crystal optical valve 43 to be in the fully transparent state. Based on this, it can be selectively set that the driving signals output by the main control chip 10 to the optical valve module 14 may include a first signal and a second signal. It can be further set that the first signal is used to be transmitted to the first liquid crystal optical valve 43 to achieve the control of the first liquid crystal optical valve 43 being in the first polarization state or the fully transparent state, that is, to achieve the control of the liquid crystal molecules in the first liquid crystal optical valve 43 rotating a first preset angle or a third preset angle. The second signal is used to be transmitted to the second liquid crystal optical valve 44 to achieve the control of the second liquid crystal optical valve 44 being in the second polarization state or the fully transparent state, that is, to achieve the control of the liquid crystal molecules in the second liquid crystal optical valve 44 rotating a second preset angle or a fourth preset angle.

[0068] For example, when the first signal is transmitted from the main control chip 10 to the optical valve module 14, the first liquid crystal optical valve 43 receives the first signal, which can drive the first liquid crystal optical valve 43 to be in the first polarization state. That is, at this time, the first signal is used to drive the liquid crystal molecules in the first liquid crystal optical valve 43 to rotate the first preset angle. At the same time, the second liquid crystal optical valve 44 receives the second signal transmitted by the main control chip 10, and this second signal drives the second liquid crystal optical valve 44 to be in the fully transparent state. That is, at this time, the second signal is used to drive the liquid crystal molecules in the second liquid crystal optical valve 44 to rotate the second preset angle. Or for example, when the first signal is transmitted from the main control chip 10 to the optical valve module 14, the first liquid crystal optical valve 43 receives the first signal, which can drive the first liquid crystal optical valve 43 to be in the fully transparent state. That is, at this time, the first signal is used to drive the liquid crystal molecules in the first liquid crystal optical valve 43 to rotate the third preset angle. At the same time, the second liquid crystal optical valve 44 receives the second signal transmitted by the main control chip 10, and this second signal drives the second liquid crystal optical valve 44 to be in the second polarization state. That is, at this time, the second signal is used to drive the liquid crystal molecules in the second liquid crystal optical valve 44 to rotate the fourth preset angle. By setting like this, different sub-signals can be used to drive different liquid crystal optical valves, which is beneficial to accurately controlling the polarization state or the light transmission state of the first liquid crystal optical valve 43 and the second liquid crystal optical valve 44 respectively, can avoid crosstalk problems during the signal transmission process, makes the control effect of different optical valves of the optical valve module 14 better, and thus is beneficial to improving the display effect of the three-dimensional display device 100.

[0069] Among them, the first signal for driving the liquid crystal molecules in the first liquid crystal light valve 43 to rotate by a first preset angle and a third preset angle may have different voltage values; similarly, the second signal for driving the liquid crystal molecules in the second liquid crystal light valve 44 to rotate by a second preset angle and a fourth preset angle may have different voltage values. In addition, in addition to different voltage values, different signal types can also be selected to control the liquid crystal molecules to have different rotation angles.

[0070] Here is also an alternative implementation. When the light valve module 14 is a single-layer liquid crystal light valve, it can be selectively controlled by transmitting a first signal to the liquid crystal light valve. The first signal is used to control the liquid crystal molecules in the liquid crystal light valve to rotate by a preset angle to control the liquid crystal light valve to be in a first polarized state. By transmitting a second signal to the liquid crystal light valve, the second signal is used to control the liquid crystal molecules in the liquid crystal light valve to rotate by a preset angle to control the liquid crystal light valve to be in a second polarized state; among them, the first signal and the second signal can be selectively transmitted using the same signal transmission path, but the first signal and the second signal have different transmission times. Such a setting can reduce the number of signal traces in the three-dimensional display device 100 and does not need to set separate signal transmission paths for the first signal and the second signal, which can further reduce the manufacturing cost of the three-dimensional display device 100. This is only an alternative implementation provided by this application. Of course, it is also possible to select different signal lines (paths) for the first signal and the second signal to achieve their transmission.

[0071] Please continue to refer to Figures 2 - 4 , in an exemplary embodiment, the light valve module 14 includes a polarized state for transmitting the left-eye image and a polarized state for transmitting the right-eye image;

[0072] When the light valve module 14 is in the polarized state for transmitting the left-eye image, the three-dimensional display device 100 displays the left-eye image; when the light valve module 14 is in the polarized state for transmitting the right-eye image, the three-dimensional display device 100 displays the right-eye image;

[0073] By alternately displaying the left-eye image and the right-eye image, the three-dimensional image of the three-dimensional display device 100 is displayed.

[0074] Specifically, the present application also provides an alternative implementation. To ensure the display effect of the three-dimensional display device 100, it is necessary to set the three-dimensional display device 100 to display the left-eye image and match the polarization state of the light valve module 14 that transmits the left-eye image in the same time period, so as to ensure that the user can clearly see the left-eye image played by the three-dimensional display device 100 with the left eye during this period, and no image enters the right eye; set the three-dimensional display device 100 to display the right-eye image and match the polarization state of the light valve module 14 that transmits the right-eye image in another same time period, so as to ensure that the user can clearly see the right-eye image played by the three-dimensional display device 100 with the right eye during this period, and no image enters the left eye. Based on this, the left-eye image and the right-eye image are alternately displayed, and at the same time, the left-eye image is alternately transmitted to the user's left eye and the right-eye image is transmitted to the right eye to realize the display of the three-dimensional image.

[0075] Figure 5 Shown is another schematic diagram of the module architecture of the three-dimensional display device provided by the embodiment of the present application. Figure 6 Shown is still another schematic diagram of the module architecture of the three-dimensional display device provided by the embodiment of the present application. Please refer to Figures 2 - 4 Refer to Figure 5 And Figure 6 , in an exemplary embodiment, it further includes a backlight module 13, a graphics card module 11, and a display control board 12;

[0076] The backlight module 13, the graphics card module 11, and the display control board 12 are respectively electrically connected to the main control chip 10; the main control chip 10 is used to control the light-emitting state of the backlight module 13 and the polarization state of the light valve module 14 according to the electrical signals transmitted by the graphics card module 11 and the display control board 12.

[0077] Specifically, the present application also provides an alternative module architecture for the three-dimensional display device 100. The three-dimensional display device 100 at least includes a main control chip 10, a graphics card module 11, a display control board 12, a backlight module 13, and a light valve module 14; it is selectively set that the graphics card module 11, the display control board 12, the backlight module 13, and the light valve module 14 are directly electrically connected to the main control chip 10, and no other chip structures are provided in the middle, so as to reduce the number of chips required in the three-dimensional display device 100, which is beneficial to simplifying the assembly steps and manufacturing process of the three-dimensional display device 100, and thus beneficial to reducing the manufacturing cost of the three-dimensional display device 100. To realize the normal display function of the three-dimensional display device 100, it can be further set that the light valve module 14 and the display control board 12 are electrically connected.

[0078] Based on the fact that the main control chip 10 provided in this application is directly electrically connected to the graphics card module 11, the display control board 12, the backlight module 13, and the light valve module 14 respectively, and the light valve module 14 and the display control board 12 are further electrically connected, the main control chip 10 is used to control the polarization and light emission of the light valve module 14 and the backlight module 13. It should be noted first that the picture data transmitted by the graphics card module 11 received by the main control chip 10 includes the left-eye data or right-eye data that will be used to control the polarization state of the light valve module 14, and the picture data received by the display control board 12 includes whether the picture to be displayed by the three-dimensional display device 100 is a left-eye picture or a right-eye picture. By controlling the matching of the specific display picture output by the screen of the three-dimensional display device 100 and the specific polarization state of the light valve module 14, it is possible to achieve the transmission of the required picture to the user's left eye or the required picture to the right eye by the three-dimensional display device 100.

[0079] Therefore, the process by which the main control chip 10 is used to control the polarization and light emission of the light valve module 14 and the backlight module 13 can be as follows: First, when the main control chip 10 receives the information fed back by the display control board 12 that the picture data (left-eye picture or right-eye picture) has been refreshed to the light valve module 14 (the corresponding display screen), and then receives the picture data (left-eye data or right-eye data) and the picture refresh rate of the three-dimensional picture to be displayed transmitted by the graphics card module 11, the main control chip 10 can directly analyze the picture data of the three-dimensional picture to be displayed transmitted by the received graphics card module 11 to confirm whether the currently received picture data is the left-eye data or the right-eye data required in three-dimensional display. Only after confirming clearly whether the received data is left-eye data or right-eye data can the main control chip 10 decide what signal to transmit to the light valve module 14 to control the specific polarization state of the light valve module 14. For example, when the main control chip 10 analyzes that the currently received picture data is left-eye data, it is necessary to control the polarization state of the light valve module 14 to the polarization state for emitting the corresponding left-eye polarized light. When the main control chip 10 analyzes that the currently received picture data is right-eye data, it is necessary to control the polarization state of the light valve module 14 to the polarization state for emitting the corresponding right-eye polarized light, so as to achieve the transmission of the required picture to the user's left eye or the required picture to the right eye by the three-dimensional display device 100 at different display times.

[0080] Subsequently, the main control chip 10 can calculate the electrical signals to be transmitted to the backlight module 13 and the light valve module 14 based on the left-eye data or right-eye data of the three-dimensional picture to be displayed and the frame refresh rate. Specifically, it calculates the (first) driving signal to be transmitted to the light valve module 14 and the second driving signal to be transmitted to the backlight module 13. Since the (first) driving signal calculated by the main control chip 10 is a digital signal and the digital signal cannot drive the polarization state of the light valve module 14, the main control chip 10 will at least perform digital-to-analog conversion processing on the calculated (first) driving signal to convert the (first) driving signal from a digital signal into an analog signal that the light valve module 14 can recognize. Then, the main control chip 10 can transmit the (first) driving signal converted into an analog signal to the light valve module 14 to control the polarization state of the light valve module 14 with the (first) driving signal, and at the same time transmit the second driving signal to the backlight module 13 to control the backlight module 13 to be in a light-emitting state or a closed state. Among them, the (first) driving signal will be different due to the left-eye data and the right-eye data. Therefore, the (first) driving signal calculated by the main control chip 10 based on the received left-eye data can be used to control the polarization state of the light valve module 14 to be the polarization state for emitting the corresponding left-eye polarized light, and the (first) driving signal calculated by the main control chip 10 based on the received right-eye data can be used to control the polarization state of the light valve module 14 to be the polarization state for emitting the corresponding right-eye polarized light.

[0081] That is to say, the transmission of the (first) driving signal and the second driving signal by the main control chip 10 to the light valve module 14 and the backlight module 13 respectively can be used to control whether the light valve module 14 is in the polarization state for transmitting the left-eye polarized light associated with the left-eye data or in the polarization state for transmitting the right-eye polarized light associated with the right-eye data, and to control whether the backlight module 13 is in the display state or the closed state. For example, the (first) driving signal and the second driving signal transmitted by the main control chip 10 can be used to control the backlight module 13 to present a backlight-off state during the switching period of the polarization state of the light valve module 14. A specific embodiment can be that during the switching period of the polarization state of the light valve module 14 between the polarization state for transmitting the left-eye polarized light and the polarization state for transmitting the right-eye polarized light, the backlight module 13 is controlled to be in the closed state, that is, when the polarization state of the light valve module 14 is switched, the backlight module 13 does not emit light.

[0082] It should be added that when the light valve module 14 is in the polarization state of transmitting left-eye polarized light, it can be used for the three-dimensional display device 100 to transmit the required received picture to the user's left eye. When the light valve module 14 is in the polarization state of transmitting right-eye polarized light, it can be used for the three-dimensional display device 100 to transmit the required received picture to the user's right eye. After the user's left and right eyes respectively receive different pictures, the image information in the brain is superimposed and regenerated to form an image with three-dimensional direction effects such as front-back, up-down, left-right, and near-far, so as to achieve the three-dimensional display effect of the picture. Further, the main control chip 10 controls the three-dimensional display device 100 so that the backlight module 13 does not emit light during the period when the pictures presented to the user's left and right eyes are switched, which is beneficial to avoiding the influence of the backlight module 13 emitting light during the period when the polarization state of the light valve module 14 is switched on the presentation effects of the pure left-eye picture and the right-eye picture, that is, avoiding the crosstalk of the picture before switching on the picture after switching, thereby being beneficial to ensuring that the user using the three-dimensional display device 100 receives the three-dimensional display effect of the three-dimensional picture.

[0083] It should be added that the above realization of the three-dimensional picture display effect makes use of the binocular parallax principle of the human eye, that is, the left and right eyes of the human eye respectively receive different pictures, and then the brain superimposes and regenerates the image information to form an image with three-dimensional direction effects, enabling people to feel as if they are on the scene when watching a movie or video. Therefore, in order to achieve this three-dimensional picture effect on a flat display device, the left and right eye images are displayed in a time-sharing manner; there will also be a switching period between the left and right eye images. Although this switching period of the left and right eye images is hardly perceptible to the human eye, if the backlight module 13 is in the light-emitting state during this period, it will still have a certain impact on the display effects of the left-eye image and the right-eye image respectively. Therefore, this application proposes to control the three-dimensional display device 100 through the main control chip 10 so that the backlight module 13 does not emit light during the period when the pictures presented to the user's left and right eyes are switched, so as to improve the three-dimensional display effect of the three-dimensional display device 100.

[0084] It should also be added that in the component architecture of the three-dimensional display device 100 provided by this application, the main control chip 10 is directly electrically connected to the graphics card module 11, the display control board 12, the backlight module 13, and the light valve module 14 respectively, and no other chip structures are provided therebetween. This is only an optional implementation manner provided by this application, but this application is not limited thereto. Without increasing the manufacturing cost as much as possible, a small number of chip structures can also be added according to the design requirements to improve the picture display effect of the three-dimensional display device 100.

[0085] It should be added that the present application aims to provide a main control chip 10, which is directly electrically connected to a graphics card module 11, a display control board 12, a backlight module 13, and a light valve module 14 respectively. At the same time, the light valve module 14 (corresponding display screen) is also electrically connected to the display control board 12. Based on this structural setting inside the three-dimensional display device 100, when the main control chip 10 receives the picture data and picture refresh rate of the three-dimensional picture to be displayed transmitted by the graphics card module 11, and the display control board 12 transmits the picture data to the light valve module 14, the main control chip 10 can directly analyze the picture data to find out whether the currently received picture data is left-eye data or right-eye data. Furthermore, the main control chip 10 can also directly calculate the drive signals that need to be sent to the light valve module 14 and the backlight module 13 based on the left-eye data or right-eye data, that is, calculate the (first) drive signal and the second drive signal. Then, the main control chip 10 performs digital-to-analog conversion on the calculated (first) drive signal and transmits it to the light valve module 14, and transmits the calculated second drive signal to the backlight module 13, so as to realize the control of the backlight module 13 to present a backlight-off state during the switching time period when the light valve module 14 is in a polarized state by the main control chip 10.

[0086] Obviously, for the three-dimensional display device 100 of the present application, the master control chip 10 provided therein can achieve the transmission of electrical signals between the graphics card module 11, the display control board 12, the backlight module 13, and the light valve module 14. The master control chip 10 can parse the received picture data, calculate the driving signals based on the parsing result of the picture data, and perform digital-to-analog conversion processing on at least the (first) driving signal in the driving signals. In addition, the master control chip 10 can also control the polarization state of the three-dimensional display device 100 based on the calculated (first) driving signal, and control the display state of the three-dimensional display device 100 based on the calculated second driving signal. Specifically, the master control chip 10 can directly control the backlight module 13 to be in the backlight-off state during the time period when the polarization state of the light valve module 14 is switched. Among them, the process of controlling the polarization state of the light valve module 14 to switch is also directly controlled by the master control chip 10, that is, the master control chip 10 can directly control the light-emitting state of the backlight module 13 and directly control the polarization state of the light valve module 14, without setting other control chips between the master control chip 10 and the backlight module 13, and without setting other control chips between the master control chip 10 and the light valve module 14. In summary, the composition architecture of the three-dimensional display device 100 provided by the present application, on the basis of realizing the three-dimensional picture display of the three-dimensional display device 100, omits the setting of the chip required for parsing the picture data, and also omits the setting of the chip required for digital-to-analog conversion of the signal. That is, the three-dimensional display device 100 provided by the present application can achieve the normal operation of the three-dimensional display device through a smaller number of chip settings, reduces the number of chips required to be set in the three-dimensional display device 100, simplifies the number of hardware used in the three-dimensional display device, is beneficial to simplifying the assembly steps and manufacturing process of the three-dimensional display device 100, and is beneficial to reducing the manufacturing cost of the three-dimensional display device 100. The reduction of the manufacturing cost of the three-dimensional display device 100 is beneficial to further reducing its market price, thereby being beneficial to improving the popularity rate of the three-dimensional display device 100. And due to the reduction of the number of chips, the driving process of realizing the three-dimensional picture display of the three-dimensional display device 100 will also be simplified, which is beneficial to improving the picture update efficiency of the three-dimensional display device 100 and improving the picture display effect.

[0087] It should also be added that for the electrical connection between the light valve module 14 (corresponding display screen) and the display control board 12, the present application does not specifically limit the electrical connection method therebetween. For example, the electrical connection between the light valve module 14 and the display control board 12 can be directly achieved through connection components such as wiring, or the main control chip 10 can be used as a bridge to achieve the electrical connection between the light valve module 14 and the display control board 12, or other module structures can be used as the bridge component for the electrical connection between the light valve module 14 and the display control board 12. It should also be noted that in the three-dimensional display device 100, since the light valve module 14 and the display screen of the display device are stacked, the display screen is not shown in the drawings for the sake of clarity and simplicity of the modules of the three-dimensional display device 100; the display control board 12 provided in the present application is electrically connected to the light valve module 14 to transmit picture data to the light valve module 14. Specifically, the display control board 12 transmits picture data to the corresponding display screen (display unit) of the light valve module 14, and the transmission of picture data from the display control board 12 to the screen can be unidirectional. After the display control board 12 completes the transmission of picture data to the display screen, it will notify the main control chip 10 of the information indicating the end of the transmission. Among them, the picture data transmitted by the display control board 12 to the display screen is used to control whether the picture to be displayed on the display screen is a left-eye picture or a right-eye picture.

[0088] The above-mentioned display control board is the commonly used display screen control board in the art, or it can be said to be a display screen driving board. The present application does not specifically limit the model, size, specific functions that can be achieved, etc. of the display control board 12, and the display control board 12 can be selected according to the design requirements of the three-dimensional display device 100.

[0089] It should also be added that the function of the above-mentioned display control board 12 in the three-dimensional display device 100 is actually realized based on the display control chip provided in the display control board 12. Therefore, Figure 5 、 Figure 6 the display control board in

[0090] Please refer to Figure 5 and Figure 6 , in an exemplary embodiment, a signal amplification module 15 is further included;

[0091] The signal amplification module 15 is electrically connected between the main control chip 10 and the light valve module 14 and is used to adjust the voltage value of the driving signal.

[0092] Specifically, the present application also provides an alternative implementation mode. In the three-dimensional display device 100, a signal amplification module 15 is further provided. The signal amplification module 15 can be arranged between the main control chip 10 and the light valve module 14, so that the main control chip 10, the signal amplification module 15, and the light valve module 14 are presented in a series-connected state in sequence. The signal amplification module 15 can at least be used to adjust the voltage value of the driving signal sent by the main control chip 10 to the light valve module 14, so as to adjust the driving signal sent by the main control chip 10 into a signal capable of driving the light valve module 14, so as to avoid the mismatch between the size of the signal transmitted to the light valve module 14 and the size of the signal capable of driving the light valve module 14, resulting in the inability to drive the light valve module 14. Therefore, electrically connecting the signal amplification module 15 between the main control chip 10 and the light valve module 14 can at least achieve the adjustment of the voltage value of the driving signal, thereby facilitating the guarantee of the driving effect on the light valve module 14 and the display effect of the three-dimensional display device 100.

[0093] In addition, if the types of the driving signal sent by the main control chip 10 and the electrical signal that the light valve module 14 can recognize are different, that is, when the main control chip 10 does not convert the calculated driving signal from a digital signal to an analog signal, the signal amplification module 15 can also be set to have the function of signal type conversion, so that the driving signal transmitted to the light valve module 14 through the signal amplification module 15 can drive the light valve module 14. It should be added that setting the signal amplification module 15 to have the signal type conversion function is only an alternative implementation mode provided by the present application. When the main control chip 10 itself can convert the signal type of the driving signal it calculates, it can be selectively set that the signal amplification module 15 only has the function of amplifying the signal size.

[0094] It should be noted that the present application does not limit the specific structure and specific type of the signal amplification module 15, as long as it can achieve the adjustment of the voltage value of the electrical signal, or further achieve the adjustment of the signal type of the electrical signal, so that the driving signal sent by the main control chip 10 can achieve the driving control of the light valve module 14.

[0095] Please refer to Figure 6 , in an exemplary embodiment, the signal amplification module 15 is a dual H-bridge circuit (not shown).

[0096] Specifically, an alternative implementation provided by the present application is to provide a dual H-bridge circuit as the signal amplification module 15 between the main control chip 10 and the light valve module 14, for amplifying the voltage value of the driving signal transmitted from the main control chip 10 to the light valve module 14. However, using a dual H-bridge circuit as the signal amplification module 15 is only an alternative implementation provided by the present application, and the present application is not limited thereto. Other circuits that can achieve signal voltage value amplification can also be selected as the signal amplification module 15.

[0097] A specific embodiment can be provided here. At this time, the dual H-bridge circuit includes a first H-bridge circuit and a second H-bridge circuit. The first H-bridge circuit is configured to output a first polarization signal to the light valve module 14 when receiving a high-level signal output by the main control chip 10, so as to control the polarization state of the light valve module 14 to present a polarization state for emitting the corresponding left-eye polarized light; the second H-bridge circuit is configured to output a second polarization signal to the light valve module 14 when receiving a low-level signal output by the main control chip, so as to control the polarization state of the light valve module 14 to present a polarization state for emitting the corresponding right-eye polarized light.

[0098] It can be understood that according to the characteristics of the light valve, the embodiments of the present application can pre-define that two H-bridge circuits with different voltage values can respectively control the light valve to perform two different forms of movement. Specifically, the correspondence between the two voltage values and the high and low levels can be set. For example, a high level can control the H-bridge circuit with a relatively large voltage value to work, and a low level can control the H-bridge circuit with a relatively small voltage value to work. For example, when the voltage input terminal of the first H-bridge circuit receives a control signal output by the main control chip 10 as a high-level signal, the voltage output terminal of the first H-bridge circuit outputs a co-polarization signal to the light valve module 14; when the voltage input terminal of the second H-bridge circuit receives a control signal output by the main control chip 10 as a low-level signal, the voltage output terminal of the second H-bridge circuit outputs a perpendicular polarization signal to the light valve module 14. In this way, the control signals output by the main control chip 10 can directly control the two pre-configured voltage value dual H-bridge circuits to respectively output different forms of polarization signals, so as to realize the driving of different polarization states of the light valve module 14.

[0099] Using a dual H-bridge circuit as the signal amplification module 15 is beneficial to improving the transmission speed of the driving signal, and thus beneficial to improving the response speed of the light valve module 14 to the driving signal, and improving the display effect of the three-dimensional display device 100.

[0100] Please refer to Figure 4 and Figure 6, based on the fact that the light valve module 14 needs to have the polarization states corresponding to the left-eye data and the polarization states corresponding to the right-eye data, an alternative implementation of the light valve module 14 provided in this application is that the light valve module 14 can be selected to be arranged in a double-layer structure. For example, the light valve module 14 includes a first light valve and a second light valve, and the first light valve and the second light valve are stacked along the thickness direction of the three-dimensional display device 100. Among them, when it is necessary to control the light passing through the light valve module 14 and exiting to the light-emitting surface side of the three-dimensional display device 100 to have a first polarization direction, at this time, the film layer where the first light valve is located can be controlled to adjust the polarization direction of the light passing through it. At the same time, the film layer where the correspondingly arranged second light valve is located is controlled not to adjust the polarization direction of the light passing through it. When it is necessary to control the light passing through the light valve module 14 and exiting to the light-emitting surface side of the three-dimensional display device 100 to have a second polarization direction, at this time, the film layer where the second light valve is located can be controlled to adjust the polarization direction of the light passing through it. At the same time, the film layer where the correspondingly arranged first light valve is located is controlled not to adjust the polarization direction of the light passing through it.

[0101] Obviously, the polarization state of the light valve module 14 can be adjusted according to the polarization states and light-transmitting states of the first light valve and the second light valve. The polarization state of the light valve module 14 can include a first polarization state and a second polarization state. In the first polarization state, the light used to control the light exiting to the light-emitting surface side of the three-dimensional display device 100 has a first polarization direction; in the second polarization state, the light used to control the light exiting to the light-emitting surface side of the three-dimensional display device 100 has a second polarization direction; the first polarization direction and the second polarization direction are perpendicular to each other. That is to say, the light valve module 14 in the first polarization state is used to transmit the left-eye polarized light corresponding to the left-eye data, and the light valve module 14 in the second polarization state is used to transmit the right-eye polarized light corresponding to the right-eye data.

[0102] When the light valve module 14 includes a first light valve and a second light valve, the first H-bridge circuit is used to output a first polarization signal to the first light valve in the light valve module 14 when receiving a high-level signal output by the main control chip 10, for example, to control the light valve module 14 to be in the first polarization state; the second H-bridge circuit is used to output a second polarization signal to the second light valve in the light valve module 14 when receiving a low-level signal output by the main control chip 10, for example, to control the light valve module 14 to be in the second polarization state.

[0103] Further, the first light valve and the second light valve may both be liquid crystal light valves. The first polarization signal is used to control the deflection of liquid crystal molecules in the first light valve, so that the light valve module 14 is in the first polarization state for transmitting left-eye polarized light. The second polarization signal is used to control the deflection of liquid crystal molecules in the second light valve, so that the light valve module 14 is in the second polarization state for transmitting right-eye polarized light. Among them, the deflection directions of the liquid crystal molecules in the first light valve and the liquid crystal molecules in the second light valve are different.

[0104] Based on the fact that the light valve module 14 needs to have a polarization state corresponding to left-eye data and a polarization state corresponding to right-eye data, an optional implementation manner of the light valve module 14 provided in this application is that the light valve module 14 can be selected to be arranged in a single layer. Among them, when it is necessary to control the light passing through the light valve module 14 to the light-emitting surface side of the three-dimensional display device 100 to have a first polarization direction, the single-layer light valve module 14 can be controlled to be in the first polarization state. The light valve module 14 in the first polarization state is used to transmit the left-eye polarized light corresponding to the left-eye data. Correspondingly, when it is necessary to control the light passing through the light valve module 14 to the light-emitting surface side of the three-dimensional display device 100 to have a second polarization direction, the single-layer light valve module 14 can be controlled to be in the second polarization state. The light valve module 14 in the second polarization state is used to transmit the right-eye polarized light corresponding to the right-eye data.

[0105] For the single-layer light valve module 14, the first H-bridge circuit in the corresponding dual H-bridge circuit is used to output a first polarization signal to the light valve module 14 when receiving a high-level signal output by the main control chip 10, so as to control the light valve module 14 to be in the first polarization state. The second H-bridge circuit in the corresponding dual H-bridge circuit is used to output a second polarization signal to the light valve module 14 when receiving a low-level signal output by the main control chip 10, so as to control the light valve module 14 to be in the second polarization state.

[0106] Further, the single-layer light valve module 14 can also be a liquid crystal light valve. The first polarization signal is used to control the liquid crystal molecules in the liquid crystal light valve to deflect in the first direction, so that the light valve module 14 is in the first polarization state for transmitting left-eye polarized light. The second polarization signal is used to control the liquid crystal molecules in the liquid crystal light valve to deflect in a second direction different from the first direction, so that the light valve module 14 is in the second polarization state for transmitting right-eye polarized light.

[0107] It should be added that the light valve module 14 can be arranged in a double-layer or single-layer manner, both of which are alternative implementation manners provided by this application. This application does not limit the specific structure of the light valve module 14. The detailed structure of the light valve module 14 can be selected according to actual needs, as long as the light valve module 14 can have two different polarization states at different display times, and is used to control the light emitted after passing through the light valve module 14 with different polarization states to have different polarization directions, so as to display the required pictures to different human eyes of users.

[0108] In addition, several alternative implementation manners provided by this application for the light valve module 14 are as follows. The single-layer arranged light valve module 14 includes a plurality of first light valves and a plurality of second light valves. Among them, the first light valves and the second light valves can be alternately arranged in the display area of the three-dimensional display device 100. For example, along the horizontal and vertical directions of the display area, the first light valves and the second light valves can be alternately arranged in sequence, that is, the first light valves and the second light valves are arranged in a checkerboard pattern. In addition, for example, it is also possible to arrange the single-layer light valve module 14 such that the first light valves and the second light valves are alternately arranged only in one direction. For example, it can also be that in one direction, only one adjacent first light valve and one second light valve are included. As long as the light valve module 14 can control the light emitted to the light-emitting surface side of the three-dimensional display device 100 through it to have different polarization directions in the first polarization state and the second polarization state.

[0109] It should be added that these alternative setting manners of the light valve module 14 provided by this application need to cooperate with other structures in the three-dimensional display device 100 for the display of three-dimensional pictures. This application does not limit the specific settings of other structural layers and structural components in the three-dimensional display device 100, as long as other structural layers and structural components can cooperate with the light valve module 14 to achieve the display of three-dimensional pictures.

[0110] It should be added that the light valve module 14 provided by this application including the first light valve and the second light valve is only one alternative implementation manner provided by this application, but this application is not limited thereto. It is also possible to set the light valve module 14 to include 3, 4, 5 or more light valves.

[0111] Please refer to Figure 5 and Figure 6 , in an exemplary embodiment, the signal amplification module 15 includes a first-stage amplification module 51 and a second-stage amplification module 52;

[0112] The first-stage amplification module 51 is electrically connected between the main control chip 10 and the second-stage amplification module 52, and the second-stage amplification module 52 is electrically connected to the light valve module 14;

[0113] The first - stage amplification module 51 is used to adjust the first voltage value V1 of the received drive signal to a second voltage value V2, and the second - stage amplification module 52 is used to adjust the received second voltage value V2 to a third voltage value V3, where |V1| < |V2| < |V3|.

[0114] Specifically, since the voltage value of the electrical signal output by the main control chip 10 may be relatively small, if it is directly transmitted to the light - valve module 14, it may not be able to achieve the ability to drive the polarization state adjustment of the light - valve module 14. Therefore, an alternative implementation of the signal amplification module 15 provided in this application is that the signal amplification module 15 includes a first - stage amplification module 51 and a second - stage amplification module 52 connected in series. At this time, the first end of the first - stage amplification module 51 is electrically connected to the main control chip 10, the second end is electrically connected to the first end of the second - stage amplification module 52, and the second end of the second - stage amplification module 52 is electrically connected to the light - valve module 14, so as to realize the sequential series connection among the main control chip 10, the first - stage amplification module 51, the second - stage amplification module 52, and the light - valve module 14. The first - stage amplification module 51 can be used to adjust the voltage value of the drive signal sent by the main control chip 10. For example, it can be used to increase the first voltage value V1 of the drive signal to the second voltage value V2. The second - stage amplification module 52 is used to increase the received second voltage value V2 to obtain a third voltage value V3 and then transmit it to the light - valve module 14. That is, the first - stage amplification module 51 and the second - stage amplification module 52 increase the voltage value of the electrical signal in a step - by - step manner, increasing the first voltage value V1 of the drive signal output by the main control chip 10 to the third voltage value V3 and then transmitting it to the light - valve module 14, so that the light - valve module 14 receives a drive signal with a voltage value of V3, and uses an electrical signal with a higher voltage value to drive the light - valve module 14, so as to control the different display (polarization) states of different regions of the light - valve module 14 and ensure the display effect of the 3D display device 100.

[0115] Since only setting one - stage amplification module for adjusting the voltage value of the electrical signal may not necessarily achieve the desired effect, that is, the voltage - value adjustment ability of a single - stage amplification module may be insufficient. Therefore, the technical solution provided in this application is to set two or more levels of amplification modules in the signal amplification module 15 to adjust the voltage value of the electrical signal in a step - by - step manner, so as to ensure that the voltage value of the electrical signal output after being processed by the signal amplification module 15 is the required voltage value. This is beneficial to the more stable working voltage received by the light - valve module 14, can also reduce the probability of screen flicker, and improve the use experience of the VR all - in - one machine.

[0116] It should be added that the signal amplification module 15 provided in this application includes a first-stage amplification module 51 and a second-stage amplification module 52 connected in series, which is only an alternative implementation provided in this application. However, this application is not limited thereto. On the basis of controlling the production cost of the three-dimensional display device 100 to be low and thin, the signal amplification module 15 may also be provided to include 3, 4, 5 or more sub-amplification modules connected in series.

[0117] It should also be added that the first-stage amplification module 51 and the second-stage amplification module 52 included in the signal amplification module 15, in addition to realizing the amplification of the voltage value of the electrical signal, can also be used to realize functions such as the reduction of the voltage value and the adjustment of the electrical signal type if necessary. For example, when the main control chip 10 does not have the function of converting the electrical signal type, a signal amplification module 15 with both the voltage value amplification function and the electrical signal type conversion function can be selected.

[0118] Please continue to refer to Figure 5 and Figure 6 , in an exemplary embodiment, the first-stage amplification module 51 is a dual-channel operational amplifier non-inverting amplifier.

[0119] Specifically, when the signal amplification module 15 disposed between the main control chip 10 and the light valve module 14 in the three-dimensional display module 100 includes a first-stage amplification module 51 and a second-stage amplification module 52, an alternative implementation provided in this application is that the first-stage amplification module 51 can be selected to adopt a dual-channel operational amplifier non-inverting amplifier; however, this application is not limited thereto. For example, a three-channel operational amplifier non-inverting amplifier, or a four-channel operational amplifier non-inverting amplifier, or an eight-channel operational amplifier non-inverting amplifier, etc. can also be selected. The specific type of the first-stage amplification module 51 can be selected according to the design requirements of the three-dimensional display device 100; as long as it can at least increase and adjust the voltage value of the driving signal.

[0120] Figure 7 Shown is a schematic diagram of the second-stage amplification module provided by the embodiment of this application. Please refer to Figures 5 - 7 , in an exemplary embodiment, the second-stage amplification module 52 includes at least two driving units 521, and each driving unit 521 controls the polarization state of a partial area of the light valve module 14.

[0121] Specifically, when the signal amplification module 15 disposed between the main control chip 10 and the light valve module 14 in the display module includes a first-stage amplification module 51 and a second-stage amplification module 52, an alternative embodiment provided by the present application is that the second-stage amplification module 52 may include two or more driving units 521 connected in cascade. Each driving unit 521 may be electrically connected to a partial area of the light valve module 14 for controlling the polarization state of the partial area in the light valve module 14. For example, if the light valve module 14 is divided into 20 sub-areas from top to bottom, then 20 driving units 521 connected in cascade may be provided in the second-stage amplification module 52 at this time, and each driving unit 521 is used to control the polarization state of a corresponding sub-area. Of course, the number of the driving units 521 mentioned here being 20 is only an alternative embodiment provided by the present application, but the present application is not limited thereto. By setting different driving units 521 to control the polarization states of different areas of the light valve module 14, the regulation fineness of the light valve module 14 can be improved, which is beneficial to further improving the picture display effect of the three-dimensional display device 100. There is no need to separately provide corresponding second-stage amplification modules for the light valves in different areas, which is beneficial to reducing the number of structural components in the three-dimensional display device 100, thereby facilitating reducing the manufacturing cost and assembly process of the three-dimensional display device 100.

[0122] It should also be added that the fact that the multiple driving units 521 included in the second-stage amplification module 52 are connected in cascade is only an alternative embodiment provided by the present application, but the present application is not limited thereto. Therefore, the cascade connection manner between the driving units 521 is not shown in the drawings, and the electrical connection relationship between the multiple driving units 521 can be selected according to the design requirements; in addition, in the case of design requirements, it can also be selected that there is no electrical connection relationship between any two driving units 521, and the driving units 521 are only used to electrically connect a partial area of the light valve module 14 and the first-stage amplification module 51.

[0123] Please combine Figure 4 Refer to Figures 5 - 7 , in an exemplary embodiment, along the thickness direction of the three-dimensional display device 100, the light valve module 14 includes a first liquid crystal light valve 43 and a second liquid crystal light valve 44 arranged in a stacked manner;

[0124] The second-stage amplification module 52 includes at least a first driving unit 522 and a second driving unit 523. The first driving unit 522 is used to control the polarization state of the first liquid crystal light valve 43 in the light valve module 14, and the second driving unit 523 is used to control the polarization state of the second liquid crystal light valve 44 in the light valve module 14.

[0125] Specifically, when the signal amplification module 15 disposed between the main control chip 10 and the light valve module 14 in the display module includes a first-stage amplification module 51 and a second-stage amplification module 52, an alternative embodiment provided by the present application is that the second-stage amplification module 52 may include two or more driving units; taking the light valve module 14 including a first liquid crystal light valve 43 and a second liquid crystal light valve 44 as an example, it is optional to set a first driving unit 522 and a second driving unit 523 connected in cascade in the second-stage amplification module 52, wherein the first driving unit 522 is electrically connected to the first liquid crystal light valve 43 of the light valve module 14, and the second driving unit 523 is electrically connected to the second liquid crystal light valve 44 of the light valve module 14. The electrical signal transmitted by the first driving unit 522 is used to control the polarization state of the first liquid crystal light valve 43, and the electrical signal transmitted by the second driving unit 523 is used to control the polarization state of the second liquid crystal light valve 44. That is, the first driving unit 522 and the second driving unit 523 are respectively used to control the movement of liquid crystal molecules in different film layers in the light valve module 14 to achieve different polarization states of the light valve module 14, without separately setting corresponding second-stage amplification modules 52 for the first liquid crystal light valve 43 and the second liquid crystal light valve 44, which is beneficial to reducing the number of structural components in the three-dimensional display device 100, thereby facilitating reducing the manufacturing cost and assembly process of the three-dimensional display device 100.

[0126] Certainly, the setting number of driving units included in the second-stage amplification module 52 corresponding to the number of liquid crystal light valves in the light valve module 14 mentioned here is only an alternative embodiment provided by the present application, but the present application is not limited thereto.

[0127] It should also be added that the first driving units 522 included in the second-stage amplification module 52 may be electrically connected in a cascaded manner, and the second driving units 523 may be electrically connected in a cascaded manner; this cascaded electrical connection method is only an alternative embodiment provided by the present application, and the present application is not limited thereto. The electrical connection relationship between multiple driving units can be selected according to design requirements. In addition, in the case of design requirements, it is also possible to select a setting where there is no electrical connection relationship between the driving units, and it is only used to electrically connect partial areas of each light valve in the light valve module 14 and the first-stage amplification module 51.

[0128] Please refer to Figure 5, An alternative embodiment provided by the present application is that the graphics card module 11 is electrically connected to the main control chip 10. The graphics card module 11 can transmit the frame rate of the three-dimensional picture to be displayed, the left-eye data or the right-eye data in the picture data to the main control chip 10. Further, a USB interface 19 can be optionally provided between the graphics card module 11 and the main control chip 10, that is, the graphics card module 11 and the main control chip 10 are electrically connected through the USB interface 19. At this time, the frame rate and the picture data will be transmitted to the main control chip 10 through the USB (Universal Serial Bus) interface 19. It should be added that the USB interface 19 here can be used to connect some external devices to realize the transmission of external resource data to the main control chip 10, so as to improve the practical functionality of the three-dimensional display device 100.

[0129] It should be added that both directly electrically connecting the graphics card module 11 and the main control chip 10 and including the USB interface 19 between the graphics card module 11 and the main control chip 10 are alternative embodiments provided by the present application, and the present application does not make specific limitations thereto. In addition, the graphics card module 11 and the display control board 12 are electrically connected through an HDMI signal line or a DP signal line (not shown). The graphics card module 11 can transmit the left-eye picture or the right-eye picture in the picture data to the display control board 12 through the HDMI signal line or the DP signal line. Among them, HDMI (High Definition Multimedia Interface) is a high-definition multimedia signal interface, and DP (DisplayPort) is a high-definition digital display interface. Both can be used to at least realize the transmission of digital video and audio, and can ensure the good transmission of audio and video, so that the picture finally presented to the user's eyes by the three-dimensional display device 100 has good clarity and guarantees the display effect of the three-dimensional display device 100.

[0130] That is, the picture data transmitted by the graphics card module 11 to the main control chip 10 includes the left-eye data or the right-eye data that will be used to control the polarization state of the light valve module 14. The picture data transmitted by the graphics card module 11 to the display control board 12 includes whether the picture to be displayed by the three-dimensional display device 100 is a left-eye picture or a right-eye picture. That is, the content of the picture data transmitted by the graphics card module 11 to the main control chip 10 and the display control board 12 is different.

[0131] It should be added that using an HDMI or DP signal line for data transmission between the graphics card module 11 and the display control board 12 is only an alternative embodiment provided by the present application, but the present application is not limited thereto, and other signal lines that can achieve the same effect can also be used.

[0132] Please refer to Figure 5, in an exemplary embodiment, a backlight driving chip 18 is disposed between the main control chip 10 and the backlight module 13. The backlight driving chip 18 can be used to adjust the display brightness of the backlight module 13. That is, on the basis of the backlight driving chip 18 transmitting the driving signal for turning on or off the backlight from the main control chip 10 to the backlight module 13, it can also realize the regulation of different brightness display effects of the backlight module 13, which is beneficial to meeting the diverse display requirements of the three-dimensional display device 100 and can also improve the user experience of the three-dimensional display device 100.

[0133] It should be added that the present application does not specifically limit the display mode of the three-dimensional display device 100, and any one of Frame Sequential, Frame Packing, Side By Side, and Top And Bottom can be selected. However, comparatively speaking, the display in the Side By Side and Top And Bottom formats will result in a loss of the resolution of the display screen, while the Frame Sequential display will not lose the resolution. Therefore, the three-dimensional display device 100 provided by the present application can select the Frame Sequential mode.

[0134] Please refer to Figure 5 , Figure 6, for the three-dimensional display device 100 provided by the present application, when the 3D software program installed in the three-dimensional display device 100 is opened, the graphics card module 11 can notify the main control chip 10 that the 3D display mode of the three-dimensional display device 100 is opened through a USB command, so that the main control chip 10 enters the frame sequence mode; after receiving the notification to enter the frame sequence mode, the main control chip 10 can notify the display control board 12 to enter the frame sequence mode of the 3D display mode through a serial port via a UART (Universal Asynchronous Receiver / Transmitter) command. At the same time, the graphics card module 11 processes the data of the three-dimensional picture to be displayed (left-eye picture and right-eye picture), and transmits the left-eye picture or right-eye picture to the display control board 12 through HDMI or DP; after receiving the left-eye picture or right-eye picture of the three-dimensional picture to be displayed, when the display control board 12 outputs it to the light valve module 14 (the screen of the three-dimensional display device 100), it notifies the main control chip 10 that the data refresh is completed through an IO (Input / Output), that is, the display control board 12 notifies the main control chip 10 of the information that the data refresh is completed through a synchronization pulse; at this time, the graphics card module 11 will notify the main control chip 10 of the actual refresh rate of the current 3D picture and the current left and right eye data through the USB interface 19. The main control chip 10 combines the received left and right eye signals (USB real-time data) and the signal that the display control board 12 has completed the refresh, and controls the output of the drive signals corresponding to the left and right light valves after calculation by an algorithm. The drive signals are amplified in the same direction by an operational amplifier after passing through a dual H-bridge IO or DACOUT, and drive the liquid crystal light valves (left and right eyes) to switch; at the same time, it controls the backlight of the backlight module 13 of the LCD (Liquid Crystal Display) to blink to ensure that the backlight is turned off when switching between the left and right eye data displays; finally, the human eye can achieve a visible 3D display effect by wearing polarized glasses.

[0135] It should also be added that as Figure 4 , Figure 5 shown, the main control chip 10 can also be further electrically connected with modules such as a USB port 91, an infrared lamp board 92, a keypad board 93, and a Bluetooth interface 94. However, these several modules are only optional modules that can be set in the three-dimensional display device 100 provided by the present application, but not limited thereto. It is also possible to set that the three-dimensional display device 100 only includes several of these modules, or it can also include other modules. The USB port 91 can be used to externally connect peripherals, such as externally connecting electronic devices such as mobile phones; the infrared lamp board 92 is used to install infrared lamps, the keypad board 93 is used to install mechanical buttons, and the Bluetooth interface 94 is used to install Bluetooth modules.

[0136] It should also be added that in the main control chip 10 provided in this application, a first interface for receiving the screen data and screen refresh rate transmitted by the graphics card module 11 is provided, and a second interface for converting a digital signal into an analog signal and then outputting it to the light valve module 14 is also provided; before the main control chip 10 is used, the functions of at least the above-mentioned first interface and second interface in the main control chip 10 will be configured in advance, so that after the main control chip 10 receives the screen data of the three-dimensional screen to be displayed through the first interface, it can analyze it to learn whether the three-dimensional display device will use it to provide a screen for the user's left eye or the user's right eye, that is, to learn whether the received data is left-eye data or right-eye data; and after the main control chip 10 calculates the first driving signal that needs to be transmitted to the light valve module 14, it performs digital-to-analog conversion on it and then outputs it through the second interface.

[0137] Based on the function of the display control board 12 in the three-dimensional display device 100, it is actually realized based on the display control chip provided in the display control board 12. An alternative embodiment provided in this application is that the display control chip in the three-dimensional display device 100 is integrated with Figure 3 、 Figure 5 、 Figure 6 the functions of the main control chip 10 in the three-dimensional display device 100 shown in, which can further reduce the number of chips set in the three-dimensional display device 100 and further reduce the manufacturing cost of the three-dimensional display device 100.

[0138] It can be understood that the three-dimensional display device 100 in the embodiments of this application can be any product or component with a display function such as an LCD display device, an electronic paper, a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, a wearable device, an Internet of Things device, etc. The embodiments disclosed in this application are not limited thereto.

[0139] The technical features of the above-mentioned embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as the combinations of these technical features do not conflict, they should be considered to be within the scope described in this specification.

[0140] The above-mentioned embodiments only express several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent should be subject to the appended claims.

Claims

1. A three-dimensional display device, characterized in that, It includes a main control chip and a light valve module electrically connected to the main control chip; The main control chip is used to calculate the driving signal transmitted to the light valve module, and is used to perform digital-to-analog conversion on the driving signal and then transmit it to the light valve module to control the current polarization state of the light valve module.

2. The three-dimensional display device according to claim 1, wherein The polarization state of the light valve module at least includes a first polarization state for transmitting the first polarized light and a second polarization state for transmitting the second polarized light; the polarization directions of the first polarized light and the second polarized light intersect.

3. The three-dimensional display device according to claim 2, wherein Along the thickness direction of the three-dimensional display device, the light valve module includes a first liquid crystal light valve and a second liquid crystal light valve arranged in a stacked manner; When the light valve module is in the first polarization state, the first liquid crystal light valve rotates by a first preset angle, the second liquid crystal light valve rotates by a second preset angle, and the second liquid crystal light valve is in a fully transparent state relative to the first liquid crystal light valve; When the light valve module is in the second polarization state, the first liquid crystal light valve rotates by a third preset angle, the second liquid crystal light valve rotates by a fourth preset angle, and the first liquid crystal light valve is in a fully transparent state relative to the second liquid crystal light valve.

4. The three-dimensional display device according to claim 3, wherein The driving signal at least includes a first signal and a second signal; The first signal is used to control the first liquid crystal light valve to be in the first preset angle or the third preset angle; The second signal is used to control the second liquid crystal light valve to be in the second preset angle or the fourth preset angle.

5. The three-dimensional display device according to any one of claims 1-4, wherein The light valve module includes a polarization state for transmitting the left-eye image and a polarization state for transmitting the right-eye image; When the light valve module is in the polarization state for transmitting the left-eye image, the three-dimensional display device displays the left-eye image; When the light valve module is in the polarization state for transmitting the right-eye image, the three-dimensional display device displays the right-eye image; By alternately displaying the left-eye image and the right-eye image, the three-dimensional image of the three-dimensional display device is displayed.

6. The three-dimensional display device according to any one of claims 1 to 4, characterized in that, It further includes a backlight module, a graphics card module, and a display control board; The backlight module, the graphics card module, and the display control board are respectively electrically connected to the main control chip; the main control chip is used to control the light-emitting state of the backlight module and the polarization state of the light valve module according to the received electrical signals transmitted by the graphics card module and the display control board.

7. The three-dimensional display device according to claim 6, wherein The main control chip is further used to analyze the image data of the three-dimensional image to be displayed transmitted by the graphics card module to confirm whether the image data is left-eye data or right-eye data.

8. The three-dimensional display device according to any one of claims 1-4, characterized in that, It further includes a signal amplification module; The signal amplification module is electrically connected between the main control chip and the light valve module and is used to adjust the voltage value of the driving signal.

9. The three-dimensional display device according to claim 8, wherein the signal amplification module is a dual-channel H-bridge circuit.

10. The three-dimensional display device according to claim 8, characterized in that, The signal amplification module includes a first-stage amplification module and a second-stage amplification module; The first-stage amplification module is electrically connected between the main control chip and the second-stage amplification module, and the second-stage amplification module is electrically connected to the light valve module; The first-stage amplification module is used to adjust the first voltage value V1 of the received driving signal to a second voltage value V2, and the second-stage amplification module is used to adjust the received second voltage value V2 to a third voltage value V3, where |V1| < |V2| < |V3|.

11. The three-dimensional display device according to claim 10, wherein the first-stage amplification module is a dual-channel operational amplifier non-inverting amplifier.

12. The three-dimensional display device according to claim 10, wherein the second-stage amplification module includes at least two driving units, and each driving unit controls the polarization state of a partial area of the light valve module.

13. The three-dimensional display device according to claim 12, wherein along the thickness direction of the three-dimensional display device, the light valve module includes a first liquid crystal light valve and a second liquid crystal light valve which are stacked; the second-stage amplification module includes at least a first driving unit and a second driving unit, the first driving unit is used to control the polarization state of the first liquid crystal light valve in the light valve module, and the second driving unit is used to control the polarization state of the second liquid crystal light valve in the light valve module.

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