Liquid crystal assembly and display device

Abstract

The invention provides a liquid crystal assembly and a display device. The liquid crystal assembly comprises a first liquid crystal layer and a second liquid crystal layer, and the first liquid crystal layer and the second liquid crystal layer are located on one side of the light-emitting face of the display panel and are sequentially arranged in the direction away from the display panel. In the first working mode, the first liquid crystal layer works in a first liquid crystal prism state, the second liquid crystal layer works in a second liquid crystal prism state, and equivalent focuses of the first liquid crystal layer and the second liquid crystal layer fall on a display image source plane; and in the second working mode, the first liquid crystal layer works in a liquid crystal lens state, the second liquid crystal layer works in a third liquid crystal prism state, and the equivalent focus of the second liquid crystal layer falls on the display image source plane. The liquid crystal assembly can effectively reduce the visible degree of BS in a display product, improves the overall display effect of the display product, can give consideration to light field 3D and double-viewpoint 3D display modes, and improves the compatibility and applicability of the liquid crystal assembly.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a liquid crystal component and a display device. Background Art

[0002] In the field of display technology, liquid crystal lenses (LCLs) are often used to replace traditional embossed column prisms to achieve lossless switching between three-dimensional (3D) and two-dimensional (2D) displays. These prisms typically consist of a liquid crystal cell with a ball spacer (BS) added to support the cell structure.

[0003] However, to support the thicker cell thickness of the LC prism, a larger diameter BS is used, making it visible in the display product and affecting the overall display quality. Furthermore, due to the different module thicknesses (i.e., the spacing between the LC prism and the light-emitting pixels) required for light field 3D and dual-viewpoint 3D, a single LC prism structure cannot achieve both light field 3D and dual-viewpoint 3D display functions.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to ordinary technicians in this field. Summary of the Invention

[0005] Based on this, the embodiments of the present application provide a liquid crystal component and a display device, which can effectively reduce the visibility of BS in display products, improve the overall display effect of display products, and take into account both light field 3D and dual-viewpoint 3D display modes, thereby improving the compatibility and applicability of liquid crystal components.

[0006] According to some embodiments, the present application provides a liquid crystal assembly, comprising a first liquid crystal layer and a second liquid crystal layer, wherein the first liquid crystal layer and the second liquid crystal layer are located on one side of a light emitting surface of a display panel and are sequentially arranged in a direction away from the display panel;

[0007] The liquid crystal component has a first operating mode and a second operating mode; in the first operating mode, the first liquid crystal layer operates in a first liquid crystal prism state, the second liquid crystal layer operates in a second liquid crystal prism state, and the equivalent focus of the first liquid crystal layer and the second liquid crystal layer falls on the display image source plane; in the second operating mode, the first liquid crystal layer operates in a liquid crystal lens state, the second liquid crystal layer operates in a third liquid crystal prism state, and the equivalent focus of the second liquid crystal layer falls on the display image source plane.

[0008] According to some embodiments, the present application further provides a display device, including a display panel and the liquid crystal component provided by the aforementioned embodiment, wherein the liquid crystal component is located on one side of the light emitting surface of the display panel.

[0009] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application.

[0010] The embodiments of the present application may or at least have the following advantages:

[0011] The embodiment of the present application reduces the thickness required for a single liquid crystal box by sequentially arranging a first liquid crystal layer and a second liquid crystal layer on one side of the light-emitting surface of the display panel in a direction away from the display panel. Correspondingly, the diameter of the BS required to support the liquid crystal box is reduced, thereby effectively reducing the visibility of the BS in the display product, solving the defect of the visual effect of the display product being affected by the visibility of the BS, and is conducive to improving the overall display effect of the display product.

[0012] In an embodiment of the present application, the liquid crystal component has a first working mode and a second working mode. In the first working mode, the first liquid crystal layer and the second liquid crystal layer respectively work in a first liquid crystal prism state and a second liquid crystal prism state, and their equivalent focus falls on the display image source plane, thereby adapting to the light field 3D display requirements. In the second working mode, the first liquid crystal layer works in a liquid crystal lens state, and the second liquid crystal layer works in a third liquid crystal prism state, and the equivalent focus of the second liquid crystal layer falls on the display image source plane, thereby adapting to the dual-viewpoint 3D display requirements. By stacking the first liquid crystal layer and the second liquid crystal layer, the liquid crystal component provided by the present application can take into account both light field 3D and dual-viewpoint 3D display modes, overcoming the limitation of traditional display technology that cannot realize two 3D display modes simultaneously due to the difference in module thickness, thereby improving the compatibility and applicability of the liquid crystal component.

[0013] Other advantages, objectives, and features of the present application will be described in detail in the following description and, to some extent, will be apparent to those skilled in the art upon examination and study of the following, or may be taught from practice of the present application. The objectives and other advantages of the present application may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other features, objects and advantages of the present application will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings.

[0015] Figure 1 This is a schematic structural diagram of a liquid crystal assembly in some embodiments of the present application;

[0016] Figure 2This is a schematic structural diagram of a liquid crystal assembly and a display panel in some embodiments of the present application;

[0017] Figure 3 This is a schematic structural diagram of a liquid crystal cell where the first liquid crystal layer is located in some embodiments of the present application;

[0018] Figure 4 This is a schematic structural diagram of a liquid crystal assembly in a first working mode in some embodiments of the present application;

[0019] Figure 5 This is a schematic structural diagram of a liquid crystal assembly in the second working mode in some embodiments of the present application;

[0020] Figure 6 shows the prism period of the second liquid crystal layer in the third liquid crystal prism state in some embodiments of the present application;

[0021] Figure 7 The prism period of the first liquid crystal layer in a first liquid crystal prism state and the prism period of the second liquid crystal layer in a second liquid crystal prism state in some embodiments of the present application are shown;

[0022] Figure 8 A schematic structural diagram of a display device provided in some embodiments of the present application omitting the liquid crystal component.

[0023] Description of reference numerals:

[0024] 110. First liquid crystal layer; 120. Second liquid crystal layer; 11. First substrate; 12. Second substrate; 13. Driving electrode layer; 14. Support; 100. Liquid crystal component; 200. Display panel; 210. Light-emitting layer; 220. Polarizer; 1. Display device. DETAILED DESCRIPTION

[0025] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings provide preferred embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present application.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0027] In the accompanying drawings, the dimensions of layers and regions may be exaggerated for clarity. It will be 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 other layer or substrate, or intervening layers may be present. When a layer is referred to as being "between" two layers, the layer may be the only layer between the two layers, or one or more intervening layers may be present. In the accompanying drawings, like reference numerals refer to like elements throughout. In addition, the term "perpendicular" and similar expressions used herein are for illustrative purposes only.

[0028] Hereinafter, although terms such as "first," "second," and the like may be used to describe various components, these components are not necessarily limited to the above terms. The above terms are used only to distinguish one component from another. It will also be understood that expressions used in the singular include expressions in the plural unless the expression in the singular has an obviously different meaning in the context.

[0029] As used herein, the term "and / or" includes any and all combinations of one or more of the relevant listed items. As used in the application documents, the term "and / or" includes any and all combinations of one or more of the relevant listed items. It should also be understood that the terms "include / comprising" or "having" specify the presence of the stated features, integers, components, parts, or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, integers, components, parts, or combinations thereof.

[0030] In the field of display technology, liquid crystal prisms are typically constructed from a liquid crystal cell with a grating electrode, such as an indium tin oxide (ITO) grating electrode, positioned on one side. Applying a voltage to the grating electrode causes the liquid crystal molecules to align with the phase of the rod prism, achieving optical functions similar to those of an imprinted prism.

[0031] To support the structure of the liquid crystal cell, spherical spacers (BSs) can be added to the cell to maintain cell thickness. However, to support the thicker liquid crystal prisms, the use of larger diameter BSs makes them visible in the display product, affecting the overall display quality. Furthermore, due to the different module thicknesses (i.e., the spacing between the liquid crystal prism and the light-emitting pixels) required for light field 3D and dual-viewpoint 3D, a single liquid crystal prism structure cannot achieve both light field 3D and dual-viewpoint 3D display functions.

[0032] In view of the above shortcomings, this application provides a liquid crystal component and display device that can effectively reduce the visibility of BS in display products, improve the overall display effect of the display product, and can take into account both light field 3D and dual-viewpoint 3D display modes, thereby improving the compatibility and applicability of the liquid crystal component. The details will be explained in subsequent embodiments.

[0033] According to some embodiments, the present application provides a liquid crystal assembly. Figure 1 The liquid crystal assembly includes a first liquid crystal layer 110 and a second liquid crystal layer 120. Figure 2 As shown, the first liquid crystal layer 110 and the second liquid crystal layer 120 are located on one side of the light emitting surface of the display panel 200 , and are sequentially arranged in a direction away from the display panel 200 .

[0034] By sequentially arranging the first liquid crystal layer 110 and the second liquid crystal layer 120 on one side of the light-emitting surface of the display panel 200 in a direction away from the display panel 200 , the thickness required for a single liquid crystal cell is reduced.

[0035] See also Figure 3 , the liquid crystal box where the first liquid crystal layer 110 is located is used as an example for explanation. The liquid crystal box includes a first substrate 11 and a second substrate 12 arranged opposite to each other. The first substrate 11 and the second substrate 12 can be, for example, glass substrates, which are used to protect the first liquid crystal layer 110 and other film structures in the liquid crystal box. A driving electrode layer 13 is provided on one side of the first substrate 11. The driving electrode layer 13 can specifically include a plurality of spaced-apart grating electrodes, which are used to form a longitudinal electric field with the common electrode to drive the liquid crystal molecules in the first liquid crystal layer 110 to rotate, and then refract the light incident on the liquid crystal box. A support 14 (such as BS) can be provided between the first substrate 11 and the second substrate 12 to form a storage space for the first liquid crystal layer 110 between the first substrate 11 and the second substrate 12.

[0036] Since the above-mentioned liquid crystal assembly 100 reduces the thickness required for a single liquid crystal box, the diameter of the BS required to support the liquid crystal box is correspondingly reduced, thereby effectively reducing the visibility of the BS in the display product, solving the defect of the visible BS affecting the visual effect of the display product, and is conducive to improving the overall display effect of the display product.

[0037] The liquid crystal assembly 100 has the following first operating mode and second operating mode.

[0038] In the first working mode, if Figure 4 As shown, the first liquid crystal layer 110 operates in a first liquid crystal prism state, the second liquid crystal layer 120 operates in a second liquid crystal prism state, and the equivalent focus of the first liquid crystal layer 110 and the second liquid crystal layer 120 falls on the display image source plane A, thereby obtaining a multi-perspective or continuous parallax 3D effect, which can adapt to the needs of light field 3D display.

[0039] like Figure 4 As shown by the middle arrow, in the first operating mode, the first liquid crystal layer 110 and the second liquid crystal layer 120 work together to form the emitted light into a parallel light beam adapted for light field 3D display.

[0040] In the second working mode, if Figure 5 As shown, the first liquid crystal layer 110 works in the liquid crystal lens state, the second liquid crystal layer 120 works in the third liquid crystal prism state, and the equivalent focus of the second liquid crystal layer 120 falls on the display image source plane A. The left and right viewpoints are generated respectively by the first liquid crystal layer 110 and the second liquid crystal layer 120, thereby obtaining a stereoscopic visual effect, which can adapt to the dual-viewpoint 3D display requirements.

[0041] like Figure 5 As indicated by the middle arrow, in the second operating mode, the first liquid crystal layer 110 and the second liquid crystal layer 120 work together to form the emitted light into a parallel light beam adapted for dual-viewpoint 3D display.

[0042] By stacking a first liquid crystal layer 110 and a second liquid crystal layer 120, the liquid crystal component 100 can take into account both light field 3D and dual-viewpoint 3D display modes, overcoming the limitation of traditional display technology that cannot simultaneously achieve two 3D display modes due to differences in module thickness, thereby improving the compatibility and applicability of the liquid crystal component 100, making it widely applicable to various devices and scenarios requiring diversified 3D displays.

[0043] Please continue reading Figure 1 In some embodiments, the liquid crystal device 100 further has a third operating mode. In the third operating mode, the first liquid crystal layer 110 and the second liquid crystal layer 120 both operate in a liquid crystal lens state, that is, the first liquid crystal layer 110 and the second liquid crystal layer 120 do not form a liquid crystal prism state, so as to display a two-dimensional (2D) image.

[0044] Therefore, the liquid crystal assembly 100 can realize smooth switching among light field 3D display mode, dual viewpoint 3D display mode and 2D display mode without the need for an additional optical layer to switch between 2D / 3D modes, thereby improving the smoothness of display mode switching and display quality.

[0045] In some embodiments, the dimming period of the second liquid crystal layer 120 in the third liquid crystal prism state is less than or equal to the dimming period of the second liquid crystal layer 120 in the second liquid crystal prism state.

[0046] The dimming period refers to the phase modulation period of the liquid crystal molecules under the action of the electric field when the liquid crystal layer forms a liquid crystal prism state. The dimming period is related to the optical period of the liquid crystal prism (also known as the prism period, also known as the prism pitch). A smaller dimming period means a smaller prism pitch.

[0047] In the above embodiment, the dimming period of the second liquid crystal layer 120 in the third liquid crystal prism state (corresponding to dual-viewpoint 3D display) is less than or equal to the dimming period of the second liquid crystal prism state (corresponding to light field 3D display), that is, the liquid crystal prism formed by the second liquid crystal layer 120 in the dual-viewpoint 3D display mode has a smaller prism period, which can be suitable for more precise optical control, which is conducive to improving the dual-viewpoint 3D display effect.

[0048] Please combine Figure 6 and Figure 7 It is understood that, as an example, the prism period p2' of the second liquid crystal layer 120 in the third liquid crystal prism state can be set to 1 / 2 of the prism period p2 of the second liquid crystal layer 120 in the second liquid crystal prism state to meet more precise optical control requirements.

[0049] In some embodiments, the dimming period of the first liquid crystal layer 110 in the first liquid crystal prism state is less than or equal to the dimming period of the second liquid crystal layer 120 in the second liquid crystal prism state. By setting different dimming periods for the first liquid crystal layer 110 and the second liquid crystal layer 120, a multi-viewing angle or continuous parallax light field 3D display effect can be achieved.

[0050] As an example, Figure 7 As shown, the prism period p1 of the first liquid crystal layer 110 in the first liquid crystal prism state can be set to 1 / 2 of the prism period p2 of the second liquid crystal layer 120 in the second liquid crystal prism state to achieve a multi-viewing angle or continuous parallax light field 3D display effect.

[0051] In some embodiments, when the first liquid crystal layer 110 is in the first liquid crystal prism state, the direction of the electric field formed by the voltage applied to the first liquid crystal layer 110 is consistent with the direction of the electric field formed by the voltage applied to the second liquid crystal layer 120 when the second liquid crystal layer 120 is in the second liquid crystal prism state.

[0052] In a liquid crystal prism, the direction of the electric field is typically determined by the geometric arrangement of the grating electrodes. For example, the grating electrodes in the liquid crystal cell containing the first liquid crystal layer 110 and the grating electrodes in the liquid crystal cell containing the second liquid crystal layer 120 can be arranged to extend in the same direction. This ensures that the electric fields generated by applying voltage to the first and second liquid crystal layers 110 and 120, when in their respective liquid crystal prism states, are aligned.

[0053] In some embodiments, the initial alignment direction of the liquid crystal molecules in the first liquid crystal layer 110 is consistent with the initial alignment direction of the liquid crystal molecules in the second liquid crystal layer 120. That is, the first liquid crystal layer 110 and the second liquid crystal layer 120 have the same rubbing direction (the rubbing orientation direction of the alignment layer in the liquid crystal device). This helps ensure that after the prism voltage is applied, the first liquid crystal layer 110 and the second liquid crystal layer 120 can produce the same phase modulation effect, achieving the desired 3D display requirements.

[0054] Please continue reading Figure 5 In some embodiments, the focal length F2 of the second liquid crystal layer 120 in the third liquid crystal prism state is equal to the distance between the second liquid crystal layer 120 and the display panel 200 in a direction perpendicular to the display panel 200 .

[0055] The embodiments of the present application do not specifically limit the distance between the second liquid crystal layer 120 and the display panel 200 in a direction perpendicular to the display panel 200. In some embodiments, the minimum distance between the second liquid crystal layer 120 and the light-emitting pixels of the display panel 200 ranges from 800 μm to 2000 μm. For example, the minimum distance between the second liquid crystal layer 120 and the light-emitting pixels of the display panel 200 can be 800 μm, 1000 μm, 1500 μm, or 2000 μm, etc., but is not limited thereto.

[0056] In some embodiments, the thickness of the second liquid crystal layer 120 in a direction perpendicular to the display panel 200 is determined based on the dimming period of the second liquid crystal layer 120 in the second liquid crystal prism state and the focal length of the second liquid crystal layer 120 in the third liquid crystal prism state.

[0057] The thickness of the second liquid crystal layer 120 in a direction perpendicular to the display panel 200 is proportional to the square of the dimming period of the second liquid crystal layer 120 in the second liquid crystal prism state, and inversely proportional to the focal length of the second liquid crystal layer 120 in the third liquid crystal prism state.

[0058] It can be understood that the cell thickness of the liquid crystal cell where the second liquid crystal layer 120 is located determines the thickness of the second liquid crystal layer 120 in a direction perpendicular to the display panel 200. Based on this, in some possible examples, the cell thickness of the liquid crystal cell where the second liquid crystal layer 120 is located can be calculated using the following formula:

[0059]

[0060] Wherein, d is the cell thickness of the liquid crystal cell where the second liquid crystal layer 120 is located, p2′ is the prism period of the second liquid crystal layer 120 in the third liquid crystal prism state, and F2 is the focal length of the second liquid crystal layer 120 in the third liquid crystal prism state.

[0061] In order to prevent BS from being visible and affecting the visual effect of the display product, in some embodiments, the thickness range of the first liquid crystal layer 110 in the direction perpendicular to the display panel 200 includes 40 μm to 80 μm, and / or the thickness range of the second liquid crystal layer 120 in the direction perpendicular to the display panel 200 includes 40 μm to 80 μm.

[0062] It can be understood that the thickness of the first liquid crystal layer 110 and the second liquid crystal layer 120 in the direction perpendicular to the display panel 200 can correspond to the thickness of the liquid crystal cell in which they are located. In traditional display technology, the thickness required for a single liquid crystal cell is relatively large (more than 100μm), and a larger diameter BS (more than 100μm) is required, resulting in the BS being clearly visible in the display product, thereby affecting the overall display effect. The above embodiment limits the cell thickness of the first liquid crystal layer 110 and / or the second liquid crystal layer 120 to 40μm to 80μm, thereby reducing the diameter of the BS required to support the liquid crystal cell to 40μm to 80μm (consistent with the cell thickness), which is significantly lower than the 100μm in traditional display technology, significantly reducing the visibility of the BS, thereby further improving the overall display effect of the display product.

[0063] It should be noted that, although not explicitly described, the terms "same", "equal" and "consistent" mentioned in this specification are interpreted as including an error range, which should be within the acceptable deviation range of the specific value determined by those skilled in the art.

[0064] Based on the same inventive concept, the present application also provides a display device. Figure 2 and Figure 8 It is understood that the display device 1 of the embodiment of the present application includes a display panel 200 and the liquid crystal assembly 100 provided in the aforementioned embodiment, with the liquid crystal assembly 100 being located on the light-emitting side of the display panel 200. The technical effects achieved by the aforementioned liquid crystal assembly can also be achieved by the display device 1, and will not be described in detail here.

[0065] For example, the display panel 200 involved in the present application may include an organic light emitting diode display panel (Organic Light Emitting Diode, referred to as OLED), a quantum dot light emitting diode display panel (Quantum DotLight Emitting Diodes, referred to as QLED), a liquid crystal display panel (Liquid Crystal Display, referred to as LCD), a sub-millimeter light emitting diode display (Mini Light Emitting Diode Display, referred to as Mini LED) or a micro light emitting diode display (Micro Light Emitting Diode Display, referred to as Micro LED), etc., but is not limited to these.

[0066] As an example, Figure 2 As shown, the display panel 200 may specifically include a light emitting layer 210 and a polarizer 220, wherein the polarizer 220 is disposed on the side of the light emitting layer 210 facing the liquid crystal assembly 100. For example, the liquid crystal assembly 100 may be bonded to the light emitting surface of the display panel 200 by optical adhesive OCA.

[0067] It can be understood that the display device 1 in the embodiment of the present application can be any product or component with a display function, such as a liquid crystal display device, electronic paper, a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, a wearable device, an Internet of Things device, etc., and the embodiment of the present application does not limit this.

[0068] It should be noted that the illustrations provided in this embodiment only illustrate the basic concept of the present application in a schematic manner. Although the illustrations only show components related to the present application and are not drawn according to the number, shape and size of components in actual implementation, the type, quantity and proportion of each component in actual implementation can be changed at will, and the component layout type may also be more complicated.

[0069] In the description of this specification, reference to terms such as "some embodiments," "other embodiments," and "ideal embodiments" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention.

[0070] It will be apparent to those skilled in the art that various modifications and variations can be made in this application without departing from the spirit or scope of this application. Therefore, this application is intended to cover modifications and variations of this application that fall within the scope of the corresponding claims (technical solutions claimed for protection) and their equivalents.

[0071] The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features of the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A liquid crystal component, characterized in that: The first liquid crystal layer and the second liquid crystal layer are located on one side of the light emitting surface of the display panel and are sequentially arranged in a direction away from the display panel; The liquid crystal component has a first operating mode and a second operating mode; in the first operating mode, the first liquid crystal layer operates in a first liquid crystal prism state, the second liquid crystal layer operates in a second liquid crystal prism state, and the equivalent focus of the first liquid crystal layer and the second liquid crystal layer falls on the display image source plane; in the second operating mode, the first liquid crystal layer operates in a liquid crystal lens state, the second liquid crystal layer operates in a third liquid crystal prism state, and the equivalent focus of the second liquid crystal layer falls on the display image source plane.

2. The liquid crystal assembly according to claim 1, wherein A dimming period of the second liquid crystal layer in the third liquid crystal prism state is less than or equal to a dimming period of the second liquid crystal layer in the second liquid crystal prism state.

3. The liquid crystal assembly according to claim 1, wherein A dimming period of the first liquid crystal layer in the first liquid crystal prism state is less than or equal to a dimming period of the second liquid crystal layer in the second liquid crystal prism state.

4. The liquid crystal assembly according to claim 1, wherein When the first liquid crystal layer is in the first liquid crystal prism state, the direction of the electric field formed by the voltage applied to the first liquid crystal layer is consistent with the direction of the electric field formed by the voltage applied to the second liquid crystal layer when the second liquid crystal layer is in the second liquid crystal prism state.

5. The liquid crystal assembly according to claim 1, wherein: An initial arrangement direction of the liquid crystal molecules in the first liquid crystal layer is consistent with an initial arrangement direction of the liquid crystal molecules in the second liquid crystal layer.

6. The liquid crystal assembly according to claim 1, wherein: A focal length of the second liquid crystal layer in the third liquid crystal prism state is equal to a distance between the second liquid crystal layer and the display panel in a direction perpendicular to the display panel.

7. The liquid crystal assembly according to claim 6, characterized in that The thickness of the second liquid crystal layer in a direction perpendicular to the display panel is determined based on a dimming period of the second liquid crystal layer in the second liquid crystal prism state and a focal length of the second liquid crystal layer in the third liquid crystal prism state; The thickness of the second liquid crystal layer in a direction perpendicular to the display panel is proportional to the square of the dimming period of the second liquid crystal layer in the second liquid crystal prism state, and is inversely proportional to the focal length of the second liquid crystal layer in the third liquid crystal prism state.

8. The liquid crystal assembly according to claim 1, wherein: The thickness of the first liquid crystal layer in a direction perpendicular to the display panel ranges from 40 μm to 80 μm, and / or the thickness of the second liquid crystal layer in a direction perpendicular to the display panel ranges from 40 μm to 80 μm.

9. The liquid crystal assembly according to claim 1, wherein: The minimum distance between the second liquid crystal layer and the light-emitting pixels of the display panel ranges from 800 μm to 2000 μm.

10. The liquid crystal assembly according to any one of claims 1 to 9, characterized in that: The liquid crystal component further has a third operating mode; in the third operating mode, both the first liquid crystal layer and the second liquid crystal layer operate in a liquid crystal lens state.

11. A display device, characterized in that: The device comprises a display panel and a liquid crystal assembly according to any one of claims 1 to 10, wherein the liquid crystal assembly is located on a side of a light emitting surface of the display panel.

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