CN220491154U - Liquid crystal dimming film assembly - Google Patents

Abstract

The application provides a liquid crystal dimming film component, which relates to the technical field of AR glasses; the liquid crystal display comprises a liquid crystal layer, a first linear polarization layer, a second linear polarization layer and a phase delay layer; the liquid crystal layer is arranged between the first linear polarization layer and the second linear polarization layer; the phase delay layer is positioned on one side of the first linear polarization layer far away from the liquid crystal layer, and is configured to be close to the light emitting side of the optical display module; circularly polarized light emitted by the optical display module is modulated into linearly polarized light through the phase delay layer and then can be absorbed by the first linear polarization layer; and the transmittance of the emergent light is formed by adjusting the incident light of the external environment through the liquid crystal dimming film component by adjusting the magnitude of the electric signal applied to the liquid crystal layer; the liquid crystal dimming film assembly can always shield light leakage of the optical display module in a high-transmittance state and a low-transmittance state, and meanwhile, the transmittance modulation of ambient light is not affected, so that the privacy and the functionality of the AR glasses are effectively improved.

Description

Liquid crystal dimming film assembly

Technical Field

The utility model relates to the technical field of AR (augmented reality) glasses, in particular to a liquid crystal dimming film component.

Background

AR (Augmented reality) glasses devices generally use liquid crystal dimming films to adjust the ambient light transmittance to meet the demands of using AR glasses at different ambient brightness. In the existing liquid crystal dimming film technology, a mode that two orthogonal polarizing films sandwich liquid crystal is generally adopted, the ambient light transmittance is controlled by controlling the liquid crystal direction through load voltage, the liquid crystal dimming film is in a low transmittance state when electrified, and is in a high transmittance state when not electrified. When the liquid crystal dimming film is in a high-transmittance state, not only the ambient light can permeate the liquid crystal dimming film, but also the light leakage at the front side of the AR optical display module can penetrate the liquid crystal dimming film to be emitted, so that people opposite to the AR eyeglass wearer can see the images in the eyeglasses, and the privacy of the AR eyeglass wearer can be leaked.

In summary, a liquid crystal dimming film is needed to always shield the light leakage of the AR display module in the high-transmittance state and the low-transmittance state, and not to affect the transmittance modulation of the ambient light, so as to improve the privacy and the functionality of the AR glasses.

Disclosure of Invention

The utility model aims to provide a liquid crystal dimming film assembly, which is used for solving the problems that when a liquid crystal dimming film is in a high transmittance state in the prior art, light leakage on the front side of an AR optical display module also can penetrate through the liquid crystal dimming film to be emitted, so that people opposite to an AR eyeglass wearer can see images in the eyeglass and the privacy of the AR eyeglass wearer can be leaked.

In view of the above, the present application provides a liquid crystal light adjusting film assembly, including a liquid crystal layer, a first linear polarization layer, a second linear polarization layer, and a phase retardation layer;

the liquid crystal layer is arranged between the first linear polarization layer and the second linear polarization layer;

the phase delay layer is positioned on one side of the first linear polarization layer far away from the liquid crystal layer, and is configured to be close to the light emitting side of the optical display module;

circularly polarized light emitted by the optical display module can be absorbed by the first linear polarization layer after being modulated into linearly polarized light by the phase delay layer; and, in addition, the processing unit,

the transmittance of the emergent light is formed by adjusting the incident light of the external environment through the liquid crystal dimming film component by adjusting the magnitude of the electric signal applied to the liquid crystal layer.

Further, the phase delay layer adopts a 1/4 wave plate, and the polarization direction of linearly polarized light modulated by the 1/4 wave plate is orthogonal to the polarization direction of the first linear polarization layer.

Further, the method comprises the steps of,

when the circularly polarized light emitted by the optical display module is right-handed polarized light, the fast axis direction of the 1/4 wave plate is parallel to the polarization direction of the first linear polarization layer which is rotated by 45 degrees anticlockwise;

when the circularly polarized light is left-handed polarized light, the fast axis direction of the 1/4 wave plate is parallel to the polarization direction of the first linear polarization layer rotated 45 degrees clockwise.

Further, the display device further comprises a first transparent electrode layer and a second transparent electrode layer; wherein,

the first transparent electrode layer is arranged between the first linear polarization layer and the liquid crystal layer;

the second transparent electrode layer is disposed between the second linear polarization layer and the liquid crystal layer.

Further, the liquid crystal display device further comprises a driving circuit, wherein the driving circuit is configured to adjust the voltage difference between the first transparent electrode layer and the second transparent electrode layer at two sides of the liquid crystal layer, so as to adjust the transmittance of incident light of an external environment passing through the liquid crystal dimming film component to form emergent light.

Further, an included angle formed by the polarization directions of the first linear polarization layer and the second linear polarization layer is the same as a rotation angle of the liquid crystal layer under the condition that no voltage is applied.

Further, the liquid crystal layer includes a twisted nematic liquid crystal, and when an electric field is not applied, liquid crystal molecules are twisted and form a helical structure such that a polarization direction of polarized light passing therethrough is rotated by 90 degrees;

when an electric field is applied, the liquid crystal molecules are arranged in parallel with the electric field, so that polarized light passing therethrough maintains an original polarization state.

Further, the liquid crystal layer includes at least: one of a guest-host liquid crystal device, an electrically controlled birefringence liquid crystal device, or Pi-cells.

Further, the optical display device further comprises a first antireflection film layer, wherein the first antireflection film layer is arranged on one side of the phase delay layer, which is close to the optical display module.

Further, the optical display device further comprises a second antireflection film layer, wherein the second antireflection film layer is arranged on one side, far away from the optical display module, of the second linear polarization layer.

Further, a lens structural support layer is also included, the lens structural support layer being disposed between the second linear polarization layer and the second anti-reflective film layer.

Further, the lens further comprises a semi-transparent semi-reflective film layer and a curved lens layer; the curved lens layer is arranged between the semi-transparent semi-reflective film layer and the phase delay layer.

Further, the second antireflection film layer is further included; the second antireflection film layer is arranged on one side of the second linear polarization layer, which is far away from the optical display module.

Adopt above-mentioned technical scheme, the application provides a liquid crystal membrane module that adjusts luminance, compare in prior art, the technological effect that has:

in the liquid crystal dimming film component, a liquid crystal layer is positioned between a first linear polarization layer and a second linear polarization layer; the liquid crystal dimming film component is used for adjusting the transmittance of incident light of an external environment, which passes through the liquid crystal dimming film component to form emergent light, by adjusting the magnitude of an electric signal applied to the liquid crystal layer, so that the adjustment of the high transmittance state, the low transmittance state and the middle transmittance state of the liquid crystal dimming film component is realized; the phase delay layer is positioned on one side of the first linear polarization layer far away from the liquid crystal layer, and the phase delay layer is configured to be close to the light emitting side of the optical display module; when circularly polarized light emitted by the optical display module passes through the phase delay layer, the circularly polarized light is modulated into linearly polarized light and then can be absorbed by the first linear polarization layer; the liquid crystal dimming film assembly can always shield light leakage of the optical display module in a high-transmittance state and a low-transmittance state, and meanwhile, the transmittance modulation of ambient light is not affected, so that the privacy and the functionality of the AR glasses are effectively improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1a is a schematic view of an AR optical system with a liquid crystal light adjusting film in a high transmittance state according to the prior art;

FIG. 1b is a schematic view of an AR optical system with a liquid crystal light adjusting film in a low transmittance state;

fig. 2 is a schematic structural diagram of a liquid crystal dimming film component according to an embodiment of the present disclosure;

fig. 3a is a schematic diagram of a change of circularly polarized light emitted from the front surface of the optical display module provided in the embodiment of the present application, sequentially passing through the 1/4 wave plate and the first linear polarization layer;

FIG. 3b is a schematic view of the optical path of the fast axis direction of the 1/4 wave plate and the polarization direction of the first linear polarization layer and the rotation direction of the circularly polarized light;

fig. 4a is a schematic diagram of optical path change of a liquid crystal layer (without applying an electric field mode) according to an embodiment of the present disclosure;

fig. 4b is a schematic diagram of optical path change (applied electric field mode) of a liquid crystal layer according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a liquid crystal dimming film component according to a second embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a liquid crystal dimming film component according to a third embodiment of the present application;

fig. 7 is a schematic structural diagram of a liquid crystal dimming film component according to a fourth embodiment of the present application.

Icon: 100-a liquid crystal dimming film assembly; 102-a liquid crystal dimming film; 104-human eyes; 105-ambient light; 106-displaying light; 107-circularly polarized light; 108-linearly polarized light; 110-a liquid crystal layer; 120-a first linear polarization layer; 130-a second linear polarizing layer; 140-a phase delay layer; 200-an optical display module; 150-a first transparent electrode layer; 160-a second transparent electrode layer; 170-a first anti-reflective film layer; 180-a second anti-reflective film layer; 190-a lens structural support layer; 191-a semi-permeable semi-reflective membrane layer; 192-curved lens layer; 193-third antireflection film layer.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1a and 1b, in the AR optical system including the liquid crystal dimming film in the prior art, ambient light 105 sequentially passes through the liquid crystal dimming film 102 and the optical display module 200 to be incident on the human eye 104. The display light of the AR optical display module 200, a part of which enters the eye 104, and another part of which exits from the front of the AR optical writing display module, passes through the liquid crystal light adjusting film 102 and then exits to the outside, if the part of the display light 106 is not blocked by the liquid crystal light adjusting film, the virtual image content is displayed to the outside of the glasses, and the privacy of the AR glasses wearer is revealed.

The liquid crystal dimming film assembly 100 provided in the embodiment of the present application can effectively shield light leakage of the display module no matter in a high-transmittance state (refer to fig. 1 a) or a low-transmittance state (refer to fig. 1 b), and ensure privacy of AR glasses.

Example 1

Fig. 2 shows a schematic structural diagram of a liquid crystal dimming film assembly provided in an embodiment of the present application, and as shown in fig. 2, the liquid crystal dimming film assembly 100 includes a liquid crystal layer 110, a first linear polarization layer 120, a second linear polarization layer 130, and a phase retardation layer 140;

wherein the liquid crystal layer 110 is disposed between the first and second linear polarization layers 120 and 130; the magnitude of the electric signal applied to the liquid crystal layer 110 is adjusted to adjust the transmittance of the incident light of the external environment passing through the liquid crystal dimming film assembly 100 to form emergent light, so as to adjust the high transmittance state, the low transmittance state and the intermediate transmittance state of the liquid crystal dimming film assembly 100;

the phase retardation layer 140 is located on a side of the first linear polarization layer 120 away from the liquid crystal layer 110, and the phase retardation layer 140 is configured to be close to the light emitting side of the optical display module 200; when the circularly polarized light emitted from the optical display module 200 passes through the phase delay layer 140, the circularly polarized light is modulated into linearly polarized light and then can be absorbed by the first linear polarization layer 120; the liquid crystal dimming film assembly 100 can always shield light leakage of the optical display module 200 in a high-transmittance state and a low-transmittance state, and meanwhile, the transmittance modulation of ambient light is not affected, so that the privacy and the functionality of the AR glasses are effectively improved.

When in use, the liquid crystal light modulation film assembly 100 in the present embodiment has at least two working states, namely a high transmittance state and a low transmittance state.

Wherein, in the high transmittance state, ambient light (generally in the unpolarized state) passes through the lc light modulating film assembly 100 at 20% -60% transmittance;

in the low transmittance state, ambient light passes through the lc dimming film assembly 100 with a transmittance of 0.01% -20%.

The specific transmittance value of the liquid crystal light modulation film assembly 100 varies depending on the manufacturing process and the thickness of each layer, but satisfies the above-defined range. The circularly polarized light emitted from the optical display module 200 (display module) of the AR glasses is mostly blocked when passing through the liquid crystal light modulation film assembly 100, and the transmittance thereof is maintained within the range of 0.01% -20%, and the specific transmittance value is different depending on the manufacturing process and the film thickness of each layer, no matter in the high transmittance or low transmittance state.

Of course, it should be understood by those skilled in the art that the operating state of the liquid crystal dimming film assembly 100 is other than high transmittance and low transmittance;

intermediate working states can also exist, and the transmittance of the liquid crystal dimming film component 100 can be adjusted in a multistage or stepless continuous mode. In particular, in the intermediate operating state, the transmittance of ambient light passing through the lc dimming film assembly 100 is between high and low, and the number and transmittance values of the particular intermediate operating state are determined by the designed load voltage variation value and the lc dimming film assembly 100 structure.

As a preferred embodiment, the phase retardation layer 140 employs a 1/4 wave plate, and the 1/4 wave plate employs a birefringent material, including but not limited to a polymer-based polycarbonate, having a thickness of between 0.1 μm and 100 μm, and the polarization direction of the linearly polarized light modulated by the 1/4 wave plate is orthogonal to the polarization direction of the first linear polarization layer 120.

As a preferred embodiment, when the circularly polarized light emitted from the optical display module 200 is right-handed polarized light, the fast axis direction of the 1/4 wave plate is parallel to the polarization direction of the first linear polarization layer 120 rotated 45 ° counterclockwise;

when the circularly polarized light is left-handed polarized light, the fast axis direction of the 1/4 wave plate is parallel to the polarization direction of the first linear polarization layer 120 rotated 45 ° clockwise.

As a preferred embodiment, the liquid crystal dimming film assembly 100 further includes a first transparent electrode layer 150 and a second transparent electrode layer 160; wherein the first transparent electrode layer 150 is disposed between the first linear polarization layer 120 and the liquid crystal layer 110; the second transparent electrode layer 160 is disposed between the second linear polarization layer 130 and the liquid crystal layer 110.

In practical application, the two transparent electrode layers may be made of ITO, and the thickness of the two transparent electrode layers is set to 150 μm.

In addition, the liquid crystal display device further comprises a driving circuit, wherein the driving circuit is configured to adjust the voltage difference between the first transparent electrode layer 150 and the second transparent electrode layer 160 at two sides of the liquid crystal layer 110, so as to adjust the transmittance of the incident light of the external environment passing through the liquid crystal dimming film assembly 100 to form emergent light.

The switching of at least two working states of the liquid crystal dimming film component 100 is realized by changing the voltage difference between the first transparent electrode layer 150 and the second transparent electrode layer 160 at two sides of the liquid crystal layer 110, and the voltage difference is 0V when the liquid crystal dimming film component is in a high transmittance state; in the low transmittance state, the voltage difference is between 3V and 20V, and the specific voltage difference is determined by the process and the circuit design.

Specifically, the light transmittance change of the liquid crystal dimming film component 100 in the present embodiment is mainly determined by the state change of the liquid crystal layer 110 under different voltages. Among them, the liquid crystal forms include, but are not limited to, twisted nematic liquid crystal (TN-LCD). The twisted nematic liquid crystal structure, as shown in fig. 4a and 4b, mainly functions to rotate the polarization axis of polarized light, and the rotation angle can be adjusted by the voltage applied from the transparent electrode layers on both sides. Referring to fig. 4a, when an electric field is not applied, the liquid crystal molecules twist and form a helical structure, which rotates the polarization direction of polarized light passing therethrough by 90 degrees. Referring to fig. 4b, when an electric field is applied, liquid crystal molecules are arranged in parallel with the electric field, and have no effect on the polarization direction of polarized light passing therethrough, and the polarized light maintains an original polarization state.

In practical applications, the polarization directions of the first linear polarization layer 120 and the second linear polarization layer 130 on both sides of the liquid crystal layer 110 need to be matched with the liquid crystal molecules, and the included angle between the polarization directions of the first linear polarization layer 120 and the second linear polarization layer 130 is the same as the rotation angle of the liquid crystal molecules under the condition of no voltage application. Taking fig. 4a and fig. 4b as an example, when polarized light passes through the liquid crystal layer 110 and rotates by 90 °, the polarizing directions of the first linear polarization layer 120 and the second linear polarization layer 130 form an included angle of 90 °; the incident light without polarization state becomes linearly polarized light when passing through the second linear polarization layer 130, and then the linearly polarized light passes through the first linear polarization layer 120 with different polarization directions under different voltage control through modulation of the liquid crystal layer 110, so that modulation of different transmittance is realized.

In addition, it should be noted that, in addition to the twisted nematic liquid crystal described above, the liquid crystal layer 110 in the present embodiment may also be a guest-host liquid crystal device, an electrically controlled birefringence liquid crystal device (ECB) and Pi-cells, and the like, and the structure of the corresponding polarizing layer needs to be slightly changed according to the liquid crystal characteristics, but all the multi-layer liquid crystal dimming films with 1/4 wave plates for reducing the front light leakage of the optical display module 200 are within the protection scope of the present application.

The following describes the operation principle of the liquid crystal light adjusting film assembly 100 in the present embodiment:

the circularly polarized light 107 emitted from the front surface of the optical display module 200 passes through the 1/4 wave plate and the first linear polarization layer 120 closely attached to the same, as shown in fig. 3a, and satisfies the following relationship: the circularly polarized light 107 is converted into linearly polarized light 108 after passing through the 1/4 wave plate, and the polarization direction of the linearly polarized light is orthogonal to the polarization direction of the first linear polarization layer 120, namely 90 degrees;

the fast axis direction of the 1/4 wave plate and the polarization direction of the first linear polarization layer 120 need to be adapted to the rotation direction of the circularly polarized light emitted from the optical display module 200, as shown in fig. 3 b: when the circularly polarized light is right-handed polarized light, the fast axis direction of the 1/4 wave plate is parallel to the polarization direction of the first linear polarization layer 120 rotated 45 ° counterclockwise; when the circularly polarized light is left-handed polarized light, the fast axis direction of the 1/4 wave plate is parallel to the polarization direction of the first linear polarization layer 120 rotated 45 ° clockwise; linearly polarized light can be absorbed by the first linear polarization layer 120; the liquid crystal dimming film assembly 100 can always shield light leakage of the optical display module 200 in a high-transmittance state and a low-transmittance state, and meanwhile, the transmittance modulation of ambient light is not affected, so that the privacy and the functionality of the AR glasses are effectively improved.

Example two

As shown in fig. 5, the liquid crystal light adjusting film assembly 100 provided in the present embodiment is an improvement made on the basis of the liquid crystal light adjusting film assembly 100 in the first embodiment;

specifically: the liquid crystal dimming film assembly 100 of the present embodiment further includes a first antireflection film layer 170, wherein the first antireflection film layer 170 is disposed on a side of the retardation layer 140 close to the optical display module 200.

In addition, the second anti-reflective film layer 180 is further included, and the second anti-reflective film layer 180 is disposed on a side of the second linear polarization layer 130 away from the optical display module 200.

The first and second anti-reflective film layers 170 and 180 may be made of conventional inorganic materials based on titanium dioxide (TiO 2), zirconium dioxide (ZrO 2), si3N4, or organic thin films or micro-nano structures, and the thickness of the first and second anti-reflective film layers 170 and 180 may be between 0.1 μm and 500 μm.

Example III

As shown in fig. 6, the liquid crystal light adjusting film assembly 100 provided in the present embodiment is an improvement made on the basis of the liquid crystal light adjusting film assembly 100 in the second embodiment.

Specifically: the liquid crystal light adjusting film assembly 100 of the present embodiment further includes a lens structure supporting layer 190, wherein the lens structure supporting layer 190 is disposed between the second linear polarization layer 130 and the second anti-reflection film layer 180.

Wherein, the lens structural support layer 190 can adopt an acrylic (PMMA) material, and the main function is to provide mechanical support, so as to prevent excessive bending or cracking of other film layers, in this example, the lens structural support layer 190 has a quadric surface structure, and the thickness is 2mm, and since other film layers are sequentially attached to the structural support layer, other film layers also have a curved surface structure along with certain bending of the lens structural support layer 190.

Example IV

The liquid crystal light adjusting film assembly 100 provided in the present embodiment is an improvement made on the basis of the liquid crystal light adjusting film assembly 100 in the first embodiment;

as shown in fig. 7, the liquid crystal dimming film component 100 in this embodiment further includes a semi-transparent and semi-reflective film layer 191 and a curved lens layer 192; wherein, the curved lens layer 192 is disposed between the semi-transparent and semi-reflective film layer 191 and the phase retardation layer 140.

In this example, the ratio of the reflectivity to the transmissivity of the semi-transparent and semi-reflective film 191 is 1:1, and of course, other ratios may be selected according to the product requirement, for example: 7:3 or 8:2, etc.

The curved lens layer 192 is made of PMMA and has a thickness of 2.2mm, and the curved lens layer 192 supports the entire multi-layer film structure on one hand and provides a certain optical power to the reflected light on the other hand so that the virtual image of the optical display module 200 can be imaged on the retina of a human eye. Because other film layers are sequentially attached to the curved lens layer 192, other film layers also bend to a certain extent along with the curved lens layer 192 to form a curved structure.

In addition, the liquid crystal dimming film component 100 in the present embodiment further includes a third anti-reflection film layer 193; the third anti-reflective film layer 193 is disposed on a side of the second linear polarization layer 130 away from the optical display module 200.

It should be noted that, the first antireflection film layer 170, the second antireflection film layer 180 and the third antireflection film layer 193 in the above-mentioned first to fourth embodiments include, but are not limited to, conventional inorganic materials based on titanium dioxide (TiO 2), zirconium dioxide (ZrO 2), si3N4, etc., and may be organic thin films or moth-eye film coating techniques implemented by micro-nano structures, which all function to enhance light transmittance, and the thickness of the above-mentioned antireflection film layers is between 0.1 μm and 500 μm.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (10)

1. The liquid crystal dimming film component is characterized by comprising a liquid crystal layer, a first linear polarization layer, a second linear polarization layer and a phase delay layer;

the liquid crystal layer is arranged between the first linear polarization layer and the second linear polarization layer;

the phase delay layer is positioned on one side of the first linear polarization layer far away from the liquid crystal layer, and is configured to be close to the light emitting side of the optical display module;

circularly polarized light emitted by the optical display module can be absorbed by the first linear polarization layer after being modulated into linearly polarized light by the phase delay layer; and, in addition, the processing unit,

the transmittance of the emergent light is formed by adjusting the incident light of the external environment through the liquid crystal dimming film component by adjusting the magnitude of the electric signal applied to the liquid crystal layer.

2. The liquid crystal light adjusting film assembly according to claim 1, wherein the phase retardation layer adopts a 1/4 wave plate, and the polarization direction of the linearly polarized light modulated by the 1/4 wave plate is orthogonal to the polarization direction of the first linearly polarized layer.

3. The liquid crystal dimming film assembly according to claim 2, wherein,

when the circularly polarized light emitted by the optical display module is right-handed polarized light, the fast axis direction of the 1/4 wave plate is parallel to the polarization direction of the first linear polarization layer which is rotated by 45 degrees anticlockwise;

when the circularly polarized light is left-handed polarized light, the fast axis direction of the 1/4 wave plate is parallel to the polarization direction of the first linear polarization layer rotated 45 degrees clockwise.

4. The liquid crystal dimming film assembly of claim 2, further comprising a first transparent electrode layer and a second transparent electrode layer; wherein,

the first transparent electrode layer is arranged between the first linear polarization layer and the liquid crystal layer;

the second transparent electrode layer is disposed between the second linear polarization layer and the liquid crystal layer.

5. The liquid crystal dimming film assembly of claim 4, further comprising a driving circuit configured to adjust a voltage difference between the first transparent electrode layer and the second transparent electrode layer on both sides of the liquid crystal layer, thereby adjusting a transmittance of incident light of an external environment passing through the liquid crystal dimming film assembly to form emergent light.

6. The liquid crystal light modulation film assembly according to claim 5, wherein an included angle formed by the polarization directions of the first and second linear polarization layers is the same as a rotation angle of the liquid crystal layer in the absence of an applied voltage.

7. The liquid crystal dimming film assembly of claim 1, further comprising a first anti-reflective film layer disposed on a side of the phase retardation layer proximate to the optical display module.

8. The lc dimming film assembly of claim 7, further comprising a second anti-reflective film layer disposed on a side of the second linear polarization layer remote from the optical display module.

9. The liquid crystal dimming film component as claimed in claim 8, further comprising a lens structure supporting layer disposed between the second linear polarization layer and the second anti-reflection film layer.

10. The liquid crystal dimming film assembly of claim 1, further comprising a semi-transmissive semi-reflective film layer and a curved lens layer; the curved lens layer is arranged between the semi-transparent semi-reflective film layer and the phase delay layer.