Dimming panel and control method therefor, dimming structure and dimming device

Abstract

A dimming panel and a control method therefor, a dimming structure and a dimming device. The dimming panel comprises a first substrate, a second substrate, a dye liquid crystal layer, and a plurality of light absorption particles. The first substrate comprises a first electrode. The second substrate is arranged opposite to the first substrate, and the second substrate comprises a second electrode and a third electrode. The second electrode is electrically insulated from the third electrode, and the third electrode comprises a plurality of first sub-electrodes arranged at intervals. The dye liquid crystal layer is located between the first substrate and the second substrate. The plurality of light absorption particles are located in the dye liquid crystal layer, and the plurality of light absorption particles are configured to absorb infrared light. The control method comprises: applying a direct current to at least one of the first electrode, the second electrode and the third electrode, so that an electric field perpendicular to the direction of the first substrate is formed between the first substrate and the second substrate, and the plurality of light absorption particles are distributed on the surface of the first substrate or the second substrate close to the dye liquid crystal layer.

Description

Light adjusting panel, control method thereof, light adjusting structure and light adjusting device TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of light adjusting, and in particular to a light adjusting panel, a control method thereof, a light adjusting structure and a light adjusting device. BACKGROUND

[0002] With the development of light adjusting technology, light adjusting panels are increasingly widely used in the fields of building and transportation. Light adjusting panels include polymer dispersed liquid crystal (PDLC) light adjusting panels, electrochromism (EC) light adjusting panels, dye liquid crystal light adjusting panels or suspended particle device light adjusting panels.

[0003] SUMMARY

[0004] In one aspect, a control method of a light adjusting panel is provided. The light adjusting panel includes a first substrate, a second substrate, a dye liquid crystal layer and a plurality of light absorbing particles. The first substrate includes a first electrode. The second substrate is disposed opposite to the first substrate, and includes a second electrode and a third electrode. The second electrode is electrically insulated from the third electrode, and the third electrode includes a plurality of first sub-electrodes arranged at intervals. The dye liquid crystal layer is located between the first substrate and the second substrate. The plurality of light absorbing particles are located in the dye liquid crystal layer, and are configured to absorb infrared light. The control method includes: applying a direct current to at least one of the first electrode, the second electrode and the third electrode, so as to form an electric field between the first substrate and the second substrate, the electric field being perpendicular to the direction of the first substrate, and so as to distribute the plurality of light absorbing particles on the surface of the first substrate or the second substrate close to the dye liquid crystal layer.

[0005] In some embodiments, the applying of the direct current to at least one of the first electrode, the second electrode and the third electrode includes: applying a first voltage to the first electrode, and applying a second voltage to the second electrode and the third electrode, and the first voltage is greater than or less than the second voltage; so as to uniformly distribute the plurality of light absorbing particles on the surface of the first substrate or the second substrate close to the dye liquid crystal layer, and the voltage difference between the first voltage and the second voltage is greater than a first threshold value, the first threshold value being a minimum voltage difference for driving the light absorbing particles to move.

[0006] In some embodiments, the second electrode and the third electrode generate a first electric field between the second electrode and the third electrode, and the first electric field is perpendicular to the first substrate.

[0007] In some embodiments, the first voltage has a value of 0V, and the second voltage has a value greater than the first threshold value; or, the second voltage has a value of 0V, and the first voltage has a value greater than the first threshold value.

[0008] In some embodiments, the applying direct current to at least one of the first electrode, the second electrode, and the third electrode includes applying a third voltage to the first electrode and the second electrode, and applying a fourth voltage to the third electrode, and the third voltage is greater than or less than the fourth voltage; so that the plurality of light-absorbing particles are uniformly distributed on the surface of the second substrate close to the dye liquid crystal layer and located in the region close to the third electrode, and the voltage difference between the third voltage and the fourth voltage is greater than a second threshold value, the second threshold value being the minimum voltage difference for the movement of light-absorbing particles.

[0009] In some embodiments, the first electrode and the second electrode generate a second electric field with the third electrode, the second electric field is partially located between two adjacent first sub-electrodes and partially located between the first electrode and the third electrode, the second electric field located between the two adjacent first sub-electrodes includes a portion parallel to the first substrate, and the second electric field located between the first electrode and the third electrode includes a portion perpendicular to the first substrate.

[0010] In some embodiments, the third voltage has a value of 0V, and the fourth voltage has a value greater than the second threshold value.

[0011] In some embodiments, the density of the plurality of light-absorbing particles is equal to the density of the dye liquid crystal layer. After the applying direct current to at least one of the first electrode, the second electrode, and the third electrode, the control method further includes removing the direct current applied to the first electrode, the second electrode, and the third electrode, and the distribution position of the light-absorbing particles remains unchanged.

[0012] In some embodiments, the dye liquid crystal layer of the light modulation panel further includes a plurality of dye molecules and a plurality of liquid crystal molecules; and the control method further includes applying alternating current to at least one of the second electrode and the third electrode to form an electric field between the first substrate and the second substrate, the electric field having a direction parallel to the first substrate, thereby adjusting the deflection angle of the liquid crystal molecules, wherein the long axis directions of at least two liquid crystal molecules have an included angle.

[0013] In some embodiments, the liquid crystal molecules have a dimension d along the long axis direction, the wavelength of the light incident on the liquid crystal molecules is λ, and the extraordinary light refractive index of the liquid crystal molecules is n e, the refractive index of the liquid crystal molecules for normal light is n o , and a phase difference between the abnormal light and the normal light is g; wherein d, l, n e , n o satisfy: g = 2p(n e -n o )d / l.

[0014] In some embodiments, the applying the AC voltage to at least one of the second electrode and the third electrode includes: applying a fifth voltage to the first electrode and the second electrode, applying a sixth voltage to the third electrode, and the fifth voltage is greater than or smaller than the sixth voltage; wherein a voltage difference between the fifth voltage and the sixth voltage is greater than a third threshold, and as the voltage difference between the fifth voltage and the sixth voltage increases, the deflection angle of the liquid crystal molecules increases, and the third threshold is a minimum voltage difference for deflection of the liquid crystal molecules.

[0015] In some embodiments, the first electrode and the second electrode generate a third electric field with the third electrode, the third electric field is partially located between two adjacent first sub-electrodes and partially located between the first electrode and the third electrode, the third electric field includes a portion perpendicular to the first substrate and a portion parallel to the first substrate.

[0016] In some embodiments, the value of the fifth voltage is 0V, and the value of the sixth voltage is greater than the third threshold; or the value of the sixth voltage is 0V, and the value of the fifth voltage is greater than the third threshold.

[0017] In some embodiments, the dye liquid crystal layer of the light modulation panel further includes a plurality of dye molecules and a plurality of liquid crystal molecules.

[0018] The control method further includes: applying a seventh voltage to the first electrode, applying an eighth voltage to the second electrode and the third electrode, and the seventh voltage is greater than or smaller than the eighth voltage, so as to form an electric field between the first substrate and the second substrate, the electric field has a direction perpendicular to the first substrate; thereby adjusting the deflection angle of the liquid crystal molecules, wherein the long axis direction of the liquid crystal molecules is substantially parallel. Wherein a voltage difference between the seventh voltage and the eighth voltage is greater than a fourth threshold, and as the voltage difference between the seventh voltage and the eighth voltage increases, the deflection angle of the liquid crystal molecules increases, and the fourth threshold is a minimum voltage difference for deflection of the liquid crystal molecules.

[0019] In some embodiments, the value of the seventh voltage is 0V, and the absolute value of the eighth voltage is greater than the fourth threshold; or the value of the eighth voltage is 0V, and the absolute value of the seventh voltage is greater than the fourth threshold.

[0020] In some embodiments, the control method further comprises: applying a direct current to at least one of the first electrode, the second electrode, and the third electrode to form an electric field between the first substrate and the second substrate, the electric field being perpendicular to the first substrate direction, so as to adjust the distribution position of the plurality of light-absorbing particles; and applying an alternating current to at least one of the first electrode, the second electrode, and the third electrode to form an electric field between the first substrate and the second substrate, the electric field being parallel to the first substrate direction, so as to adjust the deflection angle of the liquid crystal molecules.

[0021] In another aspect, a light modulation panel is provided. The light modulation panel includes a first substrate, a second substrate, a dye liquid crystal layer, and a plurality of light-absorbing particles. The first substrate includes a first substrate and a first electrode disposed on the first substrate. The second substrate is disposed opposite to the first substrate. The second substrate includes a second substrate and a second electrode and a third electrode disposed on the second substrate, the second electrode is electrically insulated from the third electrode, and the third electrode includes a plurality of first sub-electrodes arranged at intervals. The dye liquid crystal layer is located between the first substrate and the second substrate. The plurality of light-absorbing particles are located in the dye liquid crystal layer, and the plurality of light-absorbing particles are configured to absorb infrared light. The plurality of light-absorbing particles are further configured to be uniformly distributed on the surface of the first substrate or the second substrate close to the dye liquid crystal layer when the voltages of the second electrode and the third electrode are equal and both have a voltage difference with the first electrode, or to be uniformly distributed in the second substrate close to the third electrode when the voltages of the first electrode and the second electrode are equal and both have a voltage difference with the third electrode.

[0022] In some embodiments, the density of the light-absorbing particles is equal to the density of the dye liquid crystal layer.

[0023] In some embodiments, the light-absorbing particles are charged particles.

[0024] In some embodiments, the first electrode, the second electrode, and the third electrode are configured to receive a direct current to adjust the distribution position of the plurality of light-absorbing particles.

[0025] In some embodiments, the plurality of first sub-electrodes extend along a first direction and are arranged at intervals along a second direction, wherein the first direction intersects the second direction.

[0026] In some embodiments, the interval between two adjacent first sub-electrodes is 2 μm to 5 μm, and the size of the first sub-electrode along the second direction is 2 μm to 5 μm.

[0027] In some embodiments, the second electrode is a continuous whole layer structure, and the third electrode is located on a side of the second electrode away from the second substrate. The second substrate further comprises a second alignment layer. The second alignment layer is located between the second electrode and the third electrode, and is configured to electrically insulate the second electrode and the third electrode.

[0028] In some embodiments, the second electrode is a continuous whole layer structure, and the third electrode is located on a side of the second electrode away from the second substrate. The second substrate further comprises a first insulating layer and a second alignment layer. The first insulating layer is located between the second electrode and the third electrode. The second alignment layer is located on a side of the third electrode away from the second substrate.

[0029] In some embodiments, the second substrate further comprises a first planarization layer. The first planarization layer is located between the third electrode and the second alignment layer, and a surface of the first planarization layer away from the second substrate is parallel to a surface of the second substrate close to the dye liquid crystal layer and directly contacts the second alignment layer.

[0030] In some embodiments, the second electrode comprises a plurality of second sub-electrodes, the second sub-electrodes and the first sub-electrodes are arranged in the same layer, the second sub-electrodes and the first sub-electrodes both extend along a first direction and are alternately distributed along a second direction, wherein the first direction intersects the second direction.

[0031] In some embodiments, the second substrate further comprises a second planarization layer and a third alignment layer. The second planarization layer is located on a side of the second electrode and the third electrode away from the second substrate, and a surface of the second planarization layer away from the second substrate is parallel to a surface of the second substrate close to the dye liquid crystal layer. The third alignment layer is located on a side of the second planarization layer away from the second substrate, and directly contacts a surface of the second planarization layer away from the second substrate.

[0032] In another aspect, a light control structure is provided. The light control structure comprises two light control panels stacked, and the light control panels are any of the light control panels described in the above embodiments. The extending directions of the first sub-electrodes in the two light control panels have an included angle.

[0033] In another aspect, a light control device is provided. The light control device comprises any of the light control panels described in the above embodiments. Alternatively, the light control device comprises any of the light control structures described in the above embodiments. The light control device comprises one of a curtain wall, a daylighting roof, an aircraft, a rail vehicle, and a passenger car. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the present disclosure, the following will briefly introduce the drawings needed to be used in some embodiments of the present disclosure. Obviously, the drawings in the following description only represent some of the embodiments of the present disclosure, and other drawings can also be obtained by those skilled in the art according to these drawings. In addition, the drawings in the following description can be regarded as schematic diagrams, and are not limited to the actual size, actual process, actual time sequence, etc. of the product involved in the embodiments of the present disclosure.

[0035] Fig. 1 is a structural diagram of a display panel according to some embodiments;

[0036] Fig. 2 is a sectional view along the section line A-A in Fig. 1 according to some embodiments;

[0037] Fig. 3 is a curve diagram of absorbance of dye analysis according to some embodiments;

[0038] Fig. 4 is a structural diagram of light-absorbing particles distributed on a surface of a first substrate according to some embodiments;

[0039] Fig. 5 is a structural diagram of light-absorbing particles distributed in a second substrate near a third electrode according to some embodiments;

[0040] Fig. 6 is a structural diagram of light-absorbing particles distributed on a surface of a second substrate according to some embodiments;

[0041] Fig. 7 is a structural diagram of a long axis direction of a liquid crystal molecule being perpendicular to a first substrate according to some embodiments;

[0042] Fig. 8 is a structural diagram of light-absorbing particles uniformly distributed on a surface of a third electrode according to some embodiments;

[0043] Fig. 9 is a structural diagram of two liquid crystal molecules having an included angle in a long axis direction according to some embodiments;

[0044] Fig. 10 is a structural diagram of a light-absorbing particle including a shell and a transparent nanoparticle according to some embodiments;

[0045] Fig. 11 is a sectional view along the section line C-C in Fig. 10 according to some embodiments;

[0046] Fig. 12 is an imaging effect diagram of a dimming panel according to some embodiments;

[0047] Fig. 13 is a sectional view along the section line B-B in Fig. 6 according to some embodiments;

[0048] Fig. 14 is a structural diagram of a liquid crystal molecule having an included angle with a third direction according to some embodiments;

[0049] Fig. 15 is a structural diagram of a display panel according to some embodiments;

[0050] FIG. 16 is a structural diagram of a structure in which the second electrode is a continuous whole layer structure, according to some embodiments;

[0051] FIG. 17 is a structural diagram of a structure in which the second electrode includes a plurality of second sub-electrodes, according to some embodiments;

[0052] FIG. 18 is a structural diagram of a structure in which the first sub-electrode extension directions of two light modulation panels are perpendicular, according to some embodiments;

[0053] FIG. 19 is a structural diagram of a structure in which the orientation directions of the first orientation layers of two light modulation panels are perpendicular, according to some embodiments;

[0054] FIG. 20 is a structural diagram of a car, according to some embodiments;

[0055] FIGS. 21 to 25 are structural diagrams of a control method, according to some embodiments. DETAILED DESCRIPTION

[0056] The technical solutions in some embodiments of the present disclosure will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present disclosure, but not all the embodiments. Based on the embodiments provided in the present disclosure, all other embodiments obtained by a person of ordinary skill in the art belong to the scope of protection of the present disclosure.

[0057] Unless otherwise required by context, the term “comprise” and other forms of the term “comprise”, such as “comprises” and “comprising”, are to be construed as open, inclusive, meaning, i.e., “including, but not limited to”, in the entire specification and claims. In the description of the specification, the terms “one embodiment”, “some embodiments”, “exemplary embodiments”, “example”, “specific example” or “some examples” are intended to mean that a particular feature, structure, material or characteristic included in at least one embodiment or example of the present disclosure. The illustrative representation of the above terms does not necessarily mean the same embodiment or example. In addition, the specific features, structures, materials or characteristics described can be included in any one or more embodiments or examples in any appropriate manner.

[0058] The terms "first", "second", etc. are used herein only to describe one ordinal number, and do not imply a relative importance or a specific number of the corresponding technical features. Thus, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, the meaning of "a plurality" is two or more, unless otherwise specified.

[0059] In describing some embodiments, the use of "coupled" and "connected", and variations thereof, is intended to mean that two or more elements are in some way linked or joined. Connected can mean that the two or more elements are directly connected, and / or that they are indirectly connected and / or that they are wirelessly connected.

[0060] "A and / or B" includes the following three combinations: A alone, B alone, and the combination of A and B.

[0061] The use of "configured to" herein means open and inclusive language that does not exclude additional devices or steps not explicitly described.

[0062] In addition, the use of "based on" means open and inclusive language that does not exclude additional conditions or values not explicitly described.

[0063] As used herein, "approximately" includes the recited value and values within an acceptable range of deviation from the recited value, as determined by one of ordinary skill in the art considering the measurement in question and the error intended to be eliminated in that particular measurement.

[0064] As used herein, "parallel", "perpendicular", and "equal" include the recited condition and conditions that approximate the recited condition, the approximation being within an acceptable range of deviation, as determined by one of ordinary skill in the art considering the measurement in question and the error intended to be eliminated in that particular measurement. For example, "parallel" includes absolute parallel and near parallel, where near parallel can be within an acceptable range of deviation of, for example, 5°; "perpendicular" includes absolute perpendicular and near perpendicular, where near perpendicular can also be within an acceptable range of deviation of, for example, 5°. "Equal" includes absolute equality and near equality, where near equality can be within an acceptable range of deviation of, for example, less than or equal to 5% of either of the two values being compared.

[0065] It will be appreciated that when a layer or element is referred to as being on another layer or substrate, it can be directly on the other layer or substrate, or intervening layers can also be present.

[0066] Exemplary embodiments are described herein with reference to cross-sectional and / or plan view illustrations that are idealized illustrations. In the interest of clarity, not all of the layer or regions are shown in the drawings can be shown with exaggerated thicknesses and / or areas. Thus, it will be appreciated that variations in the shapes of the regions illustrated in the figures can occur. It will also be appreciated that examples of the exemplary embodiments are not limited to the precise shapes of the regions illustrated in the figures, but are to be accorded the most liberal interpretation of shape, consistent with an application of the principles of the exemplary embodiments. For example, etched regions that are illustrated as rectangular will typically have curved features. Thus, the regions illustrated in the drawings are schematic and not intended to indicate the actual shape of the regions of a device, and are not intended to limit the scope of the exemplary embodiments.

[0067] Embodiments of the present disclosure provide a light control panel 100, as shown in FIG. 1, which includes a first substrate 10, a second substrate 20, and a dye liquid crystal layer 30.

[0068] As shown in FIG. 1, the first substrate 10 includes a first substrate 11, a first electrode 12 disposed on the first substrate 11, and a first alignment layer 13 disposed on the first electrode 12, the first alignment layer 13 being farther from the first substrate 11 than the first electrode layer 12.

[0069] The material of the first substrate 11 can include a material having a high light transmittance (e.g., a light transmittance greater than or equal to 85%). For example, the material of the first substrate 11 can include one or more of polyethersulfone (PES), polyarylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene glycol terephthalate (PET), polyphenylene sulfide (PPS), polyimide (PI), polycarbonate (PC), tri-cellulose acetate (TAC), cellulose acetate propionate (CAP), polyphenylene sulfone resins (PPSU), cyclo olefin polymer (COP), and polymethyl methacrylate (PMMA), such as polyimide.

[0070] As shown in FIG. 1, the material of the first electrode 12 can include a conductive material having a high light transmittance. For example, the material of the first electrode 12 includes indium tin oxides (ITO).

[0071] The thickness of the first electrode 12 can be, for example, 10 nm to 1000 nm. For example, the thickness of the first electrode 12 is 50 nm to 500 nm. For example, the thickness of the first electrode 12 is 50 nm to 500 nm. Embodiments of the present disclosure are not listed one by one.

[0072] The thickness of the first orientation layer 13 is, for example, 10 nm to 1000 nm. The thickness of the first orientation layer 13 is, for example, 10 nm to 1000 nm. For example, the thickness of the first orientation layer 13 is 50 nm to 500 nm. Embodiments of the present disclosure are not listed one by one.

[0073] As shown in FIG. 1, the second substrate 20 is arranged opposite to the first substrate 10. The second substrate 20 comprises a second substrate 21, and a second electrode 22 and a second orientation layer 23 arranged on the second substrate 21.

[0074] The material of the second substrate 21 can be the same as the material of the first substrate 11, for example, the material of the second substrate 21 and the material of the first substrate 11 both comprise polyimide. The material of the second electrode 22 can be the same as the material of the first electrode 12, for example, the material of the first electrode 12 and the material of the second electrode 22 both are indium tin oxide. In this way, the same material in the dimming panel 100 can be improved, and the manufacturing cost of the dimming panel 100 can be reduced.

[0075] The thickness of the second electrode 22 is For example, the thickness of the second electrode 22 is Or Embodiments of the present disclosure are not listed one by one.

[0076] For example, the thickness of the second electrode 22 can be equal to the thickness of the first electrode 12. For example, the thickness of the second electrode 22 and the thickness of the first electrode 12 are Or Embodiments of the present disclosure are not listed one by one.

[0077] For example, the thickness of the second electrode 22 can be not equal to the thickness of the first electrode 12. For example, the thickness of the second electrode 22 is The thickness of the first electrode 12 is Or the thickness of the second electrode 22 is The thickness of the first electrode 12 is Embodiments of the present disclosure are not listed one by one.

[0078] As shown in FIG. 1, the orientation direction of the second orientation layer 23 is parallel to the orientation direction of the first orientation layer 13. The material of the second orientation layer 23 can be the same as the material of the first orientation layer 13. For example, the material of the second orientation layer 23 and the material of the first orientation layer 13 both comprise polyimide.

[0079] In some embodiments, the thickness of the second orientation layer 23 is For example, the thickness of the second orientation layer 23 is Or Embodiments of the present disclosure are not listed one by one.

[0080] For example, the thickness of the second orientation layer 23 can be equal to the thickness of the first orientation layer 13. For example, the thickness of the second orientation layer 23 and the thickness of the first orientation layer 13 are Or Embodiments of the present disclosure are not listed one by one.

[0081] For example, the thickness of the second alignment layer 23 can be different from the thickness of the first alignment layer 13. For example, the thickness of the second alignment layer 23 is the thickness of the first alignment layer 13 is or the thickness of the second alignment layer 23 is the thickness of the first alignment layer 13 is Embodiments of the present disclosure are not listed one by one.

[0082] As shown in FIGS. 1 and 2, the dye liquid crystal layer 30 includes a plurality of dye molecules 31 and a plurality of liquid crystal molecules 32 (the dye molecules 31 are represented by black ovals and the liquid crystal molecules 32 are represented by white ovals in FIG. 1).

[0083] The liquid crystal molecules 32 include positive liquid crystal molecules 32 or negative liquid crystal molecules 32. The dielectric constant of the positive liquid crystal molecules 32 in the long axis direction is greater than the dielectric constant in the short axis direction. In the case where an external electric field is applied to the positive liquid crystal molecules 32, the long axis of the positive liquid crystal molecules 32 deflects along the direction parallel to the electric field. The dielectric constant of the negative liquid crystal molecules 32 in the long axis direction is less than the dielectric constant in the short axis direction. In the case where an external electric field is applied to the negative liquid crystal molecules 32, the long axis of the negative liquid crystal molecules 32 deflects along the direction perpendicular to the electric field.

[0084] The dye molecules 31 include positive dye molecules 31 or negative dye molecules 31. The absorbance of the positive dye molecules 31 in the long axis direction is greater than the absorbance in the short axis direction. That is, as shown in FIG. 3, in the case where the long axis direction of the positive dye molecules 31 is perpendicular to the first substrate 10, the absorbance of the positive dye molecules 31 is the smallest. In the case where the long axis direction of the positive dye molecules 31 is parallel to the first substrate 10, the absorbance of the positive dye molecules 31 is the greatest. The absorbance of the negative dye molecules 31 in the long axis direction is less than the absorbance in the short axis direction. That is, in the case where the long axis direction of the negative dye molecules 31 is perpendicular to the first substrate 10, the absorbance of the negative dye molecules 31 is the greatest. In the case where the long axis direction of the negative dye molecules 31 is parallel to the first substrate 10, the absorbance of the negative dye molecules 31 is the smallest.

[0085] As shown in FIGS. 1 and 2, the long axis directions of the plurality of liquid crystal molecules 32 are substantially parallel and have an included angle with the first substrate 10. By changing the voltage difference between the first electrode 12 and the second electrode 22, the included angle between the long axis direction of the liquid crystal molecules 32 and the first substrate 10 can be changed, thereby changing the included angle between the dye molecules 31 and the first substrate 10, changing the absorbance of the dye molecules 31, and changing the light transmittance of the light modulation panel 100.

[0086] It needs to be understood that, as shown in FIG. 1, the light-adjustable panel 100 further comprises a glue frame 40, which is located between the first substrate 10 and the second substrate 20 and surrounds the dye liquid crystal layer 30. The glue frame 40 can block the water vapor in the air, and can improve the problem of water vapor from the outside into the dye liquid crystal layer 30, and reduce the risk of material aging of the dye liquid crystal layer 30.

[0087] The material of the glue frame 40 includes polyvinyl butyral (English: Polyvinyl Butyral, abbreviated as: PVB), ethylene-vinyl acetate copolymer (English: Ethylene Viny Acetate, abbreviated as: EVA) or ionic interlayer (English: Sentry Glas Plus, abbreviated as: SGP), and the embodiments of the present disclosure do not list one by one.

[0088] In some embodiments, the light-adjustable panel 100 further comprises a spacer located between the first substrate 10 and the second substrate 20, which can support the first substrate 10 and the second substrate 20, and can reduce the risk of deformation of the first substrate 10 and the second substrate 20, and reduce the risk of inconsistent thickness of the dye liquid crystal layer 30. The spacer can be a spherical spacer made of glass fiber, or a rod-shaped spacer made of resin.

[0089] In the related art, the radiant energy of visible light is about 45% of the radiant energy of natural light, and the radiant energy of infrared light is about 50% of the radiant energy of natural light. The above light-adjustable panel cannot adjust the transmittance of infrared light passing through the light-adjustable panel.

[0090] To solve the above technical problems, as shown in FIG. 1, some embodiments of the present disclosure provide that the second substrate 20 in the light-adjustable panel 100 further comprises a third electrode 24.

[0091] As shown in FIG. 1, the third electrode 24 is arranged on the second substrate 21, the third electrode 24 is electrically insulated from the second electrode 22, and the third electrode 24 comprises a plurality of first sub-electrodes 241 arranged at intervals.

[0092] The material of the third electrode 24 can be the same as that of the second electrode 22, for example, the material of the third electrode 24 and the material of the second electrode 22 can both be indium tin oxide.

[0093] In some embodiments, the thickness of the third electrode 24 is For example, the thickness of the third electrode 24 is Or The embodiments of the present disclosure do not list one by one.

[0094] Exemplarily, the thickness of the third electrode 24 can be equal to the thickness of the second electrode 22. For example, the thickness of the third electrode 24 and the thickness of the second electrode 22 are both Or

[0095] Exemplarily, the thickness of the third electrode 24 can be not equal to the thickness of the second electrode 22. For example, the thickness of the third electrode 24 is the thickness of the second electrode 22 is Or the thickness of the third electrode 24 is the thickness of the second electrode 22 is Embodiments of the present disclosure are not listed one by one.

[0096] As shown in FIG. 1, the light modulation panel 100 further comprises a plurality of light absorbing particles 50. The plurality of light absorbing particles 50 are located in the dye liquid crystal 30, and the plurality of light absorbing particles 50 are configured to absorb infrared light, so as to reduce the transmittance of infrared light in the light modulation panel 100.

[0097] Exemplarily, the light absorbing particles 50 are charged particles. For example, as shown in FIG. 1, the light absorbing particles 50 are negatively charged particles.

[0098] In some embodiments, the first electrode 12, the second electrode 22 and the third electrode 24 are further configured to receive direct current to adjust the distribution position of the plurality of light absorbing particles 50. That is, in the case of adjusting the distribution position of the plurality of light absorbing particles 50, the voltage on the first electrode 12, the second electrode 22 and the third electrode 24 is all direct current voltage.

[0099] As shown in FIG. 1 and FIG. 4, the light absorbing particles 50 are further configured to move to the surface of the first substrate 10 or the second substrate 20 close to the dye liquid crystal layer 30 and be uniformly distributed on the surface of the first substrate 10 or the second substrate 20 close to the dye liquid crystal layer 30 in the case that the voltage of the second electrode 22 and the voltage of the third electrode 24 are equal and both have voltage difference with the first electrode 12, so that the infrared light passing through the surface of the first substrate 10 or the second substrate 20 close to the dye liquid crystal layer 30 can be absorbed by the plurality of light absorbing particles 50. At this time, the transmittance of infrared light of the light modulation panel 100 is the first transmittance.

[0100] As shown in FIG. 1 and FIG. 4, the first voltage is applied to the first electrode 12, the second voltage is applied to the second electrode 22 and the third electrode 24, and the first voltage is greater than or less than the second voltage. Wherein, the voltage difference between the first voltage and the second voltage is greater than a first threshold, the first threshold is the minimum voltage difference to drive the light-absorbing particles 50 to move, so that the plurality of light-absorbing particles 50 can move to the surface of the first substrate 10 or the second substrate 20 close to the dye liquid crystal layer 30 to be uniformly distributed on the surface of the first substrate 10 or the second substrate 20 close to the dye liquid crystal layer 30.

[0101] Exemplarily, as shown in FIG. 4, the first voltage is less than the second voltage. For example, the value of the first voltage is 0V, and the value of the second voltage is greater than the first threshold (for example, the first threshold is 10V, and the value of the second voltage is 15V). At this time, the first electrode 12 generates a first electric field between the second electrode 22 and the third electrode 24, the first electric field is perpendicular to the first substrate 10, and the direction of the first electric field is from the first electrode 12 to the second electrode 22 and the third electrode 24. As shown in FIG. 1, under the action of the first electric field, the light-absorbing particles 50 move to the surface of the second substrate 20 close to the dye liquid crystal layer 30, and then the plurality of light-absorbing particles 50 are uniformly distributed on the surface of the second substrate 20 close to the dye liquid crystal layer 30.

[0102] Exemplarily, as shown in FIG. 1, the first voltage is greater than the second voltage, for example, the value of the first voltage is greater than the first threshold (for example, the value of the first voltage is 15V), and the value of the second voltage is 0V. At this time, the first electrode 12 generates a first electric field between the second electrode 22 and the third electrode 24, the first electric field is perpendicular to the first substrate 10, and the direction of the first electric field is from the second electrode 22 and the third electrode 24 to the first electrode 12. As shown in FIG. 4, under the action of the first electric field, the light-absorbing particles 50 move to the surface of the first substrate 10 close to the dye liquid crystal layer 30, and then the plurality of light-absorbing particles 50 are uniformly distributed on the surface of the first substrate 10 close to the dye liquid crystal layer 30.

[0103] As shown in FIG. 5, when the voltage of the first electrode 12 and the voltage of the second electrode 22 are equal, and both have a voltage difference with the third electrode 24, the plurality of light-absorbing particles 50 move to the surface of the third electrode 24 to be uniformly distributed on the surface of the second substrate 20 close to the dye liquid crystal layer 30 and in the area close to the third electrode 24. That is, the plurality of light-absorbing particles 50 are uniformly distributed on the surface and side of the plurality of first sub-electrodes 24 close to the dye liquid crystal layer 30, and there is no light-absorbing particle 50 in the area between two adjacent first sub-electrodes 241. The infrared light passing through the surface of the first sub-electrode 241 close to the dye liquid crystal layer 30 and the side of the first sub-electrode 241 close to the dye liquid crystal layer 30 can be absorbed by the plurality of light-absorbing particles 50, while the infrared light passing through the area between the adjacent first sub-electrodes 241 without light-absorbing particles 50 cannot be absorbed. At this time, the transmittance of the infrared light of the light-adjusting panel 100 is a second transmittance. The second transmittance is greater than the first transmittance. The voltage difference between the first electrode 12, the second electrode 22 and the third electrode 24 can be controlled to adjust the transmittance of the infrared light of the light-adjusting panel 100.

[0104] As shown in FIG. 5, the third voltage is applied to the first electrode 12 and the second electrode 22, and the fourth voltage is applied to the third electrode 24, and the third voltage is greater than or less than the fourth voltage, wherein the voltage difference between the third voltage and the fourth voltage is greater than a second threshold value, and the second threshold value is the minimum voltage difference for moving the light-absorbing particles 50. In this way, the plurality of light-absorbing particles 50 move to the surface close to the third electrode 24 to be uniformly distributed on the surface of the second substrate 20 close to the dye liquid crystal layer 30 and in the area close to the third electrode 24.

[0105] The second threshold value needs to move the plurality of light-absorbing particles 50 to the surface of the second substrate 20 close to the dye liquid crystal layer 30, and also needs to move the plurality of light-absorbing particles 50 to the surface of the third electrode 24, so the second threshold value is greater than the first threshold value.

[0106] Exemplarily, the third voltage is less than the fourth voltage. For example, the value of the third voltage is 0V, and the value of the fourth voltage is greater than the second threshold value (for example, the second threshold value is 11V, and the value of the fourth voltage is 15V). At this time, the second electric field is generated between the first electrode 12 and the second electrode 22 and the third electrode 24, and part of the second electric field is located between two adjacent first sub-electrodes 241, and part of the second electric field is located between the first electrode 12 and the third electrode 24.

[0107] The second electric field between the two adjacent first sub-electrodes 241 includes a portion parallel to the first substrate 10. Under the action of the portion parallel to the first substrate 10 in the second electric field, the plurality of light-absorbing particles 50 are close to the side surface of the third electrode 24 in a direction parallel to the first substrate 10, and then the plurality of light-absorbing particles 50 are distributed on the side surface of the third electrode 24. The second electric field between the first electrode 12 and the third electrode 24 includes a portion perpendicular to the first substrate 10. Under the action of the portion perpendicular to the first substrate 10 in the second electric field, the plurality of light-absorbing particles 50 are close to the surface of the dye liquid crystal layer 30 in a direction perpendicular to the first substrate 10, and then the plurality of light-absorbing particles 50 are distributed on the surface of the third electrode 24 close to the dye liquid crystal layer 30. Thus, the plurality of light-absorbing particles 50 in the dye liquid crystal layer 30 are uniformly distributed on the surface of the second substrate 20 close to the dye liquid crystal layer 30 and located in the region close to the third electrode 24.

[0108] In some embodiments, as shown in FIGS. 1, 2, 4 and 5, the density of the plurality of light-absorbing particles 50 is equal to the density of the dye liquid crystal layer 30. In this way, the gravity of the plurality of light-absorbing particles 50 is equal to the buoyancy received by the plurality of light-absorbing particles 50. In the case that the plurality of light-absorbing particles 50 do not receive the force of the electric field, the plurality of light-absorbing particles 50 can be suspended in the dye liquid crystal layer 30, so that the distribution position of the light-absorbing particles 50 remains unchanged, and the transmittance of the infrared light of the light modulation panel 100 is maintained at the first transmittance or the second transmittance.

[0109] In the case that the density of the plurality of light-absorbing particles 50 is equal to the density of the dye liquid crystal layer 30, the voltage can not be continuously applied to the first electrode 12, the second electrode 22 and the third electrode 24, so that the transmittance of the infrared light of the light modulation panel 100 can remain unchanged, and the electric energy can be saved.

[0110] In some embodiments, as shown in FIGS. 1, 2, 4-8, the light-absorbing particle 50 includes a transparent shell 51, for example, a shell with a transmittance greater than or equal to 85%, and a transparent nanoparticle 52 wrapped by the transparent shell 51.

[0111] The transparent nanoparticle 52 is configured to absorb infrared light. The material of the transparent nanoparticle 52 can include nano indium tin oxide or nano color tungsten bronze, which are not listed one by one in the embodiments of the present disclosure.

[0112] As shown in FIGS. 1, 2, 4-8, the transparent shell 51 has a charge. Exemplarily, the transparent shell 51 has a negative charge. For example, the transparent shell 51 can be charged by dispersion polymerization or grafting.

[0113] In some embodiments, the first electrode 12, the second electrode 22 and the third electrode 24 are configured to receive alternating current to adjust the deflection angle of the liquid crystal molecules 32. That is, the voltage on the first electrode 12, the second electrode 22 and the third electrode 24 are all alternating voltages. The frequency of the alternating voltages on the first electrode 12, the second electrode 22 and the third electrode 24 is high (for example, the frequency of the alternating voltages is 60 Hz), the direction of the electric field generated by the alternating voltages changes at a high frequency, and the plurality of light-absorbing particles 50 cannot move fast enough, so the plurality of light-absorbing particles 50 are still located at the original distribution position, and the infrared light transmittance of the dimming panel 100 can be maintained.

[0114] In some embodiments, the size of the liquid crystal molecules 32 along the long axis direction is d, the wavelength of the light incident on the liquid crystal molecules is λ, the extraordinary light refractive index of the liquid crystal molecules 32 is n e , the ordinary light refractive index of the liquid crystal molecules 32 is n o , and the phase difference between the extraordinary light and the ordinary light is g; wherein d, λ, n e , n o satisfy: g = 2π(n e -n o )d / λ. Wherein the ordinary light refractive index n o of the liquid crystal molecules remains unchanged, the extraordinary light refractive index n e of the liquid crystal molecules is related to the angle formed between the direction of the light incident on the liquid crystal molecules 32 and the long axis direction of the liquid crystal molecules 32, and as the angle increases, the extraordinary light refractive index n e of the liquid crystal molecules 32 also increases.

[0115] As shown in FIGS. 9-11, the dye liquid crystal layer 30 is configured to adjust the deflection angle of the liquid crystal molecules 32 when the voltage of the first electrode 12 and the second electrode 22 is equal, and both have a voltage difference with the third electrode 24. Wherein the long axis direction of at least two liquid crystal molecules 32 has an angle. In this way, when natural light enters the dye liquid crystal layer 30 perpendicularly to the first substrate 10, the long axis direction of at least two liquid crystal molecules 32 has an angle, which can make the extraordinary light refractive index n e of at least two liquid crystal molecules 32 different, that is, the phase difference between the extraordinary light and the ordinary light of at least two liquid crystal molecules 32 is different. The extraordinary light refractive index n eThe difference in the refraction angle of the extraordinary light of the at least two liquid crystal molecules 32 is different, the propagation direction of the extraordinary light of the at least two liquid crystal molecules 32 is different, and the propagation direction of the light in the at least two liquid crystal molecules 32 is different. That is, the propagation direction of the light emitted from the dye liquid crystal layer 30 is at least towards two directions, the scattering light in the light emitted from the dye liquid crystal layer 30 is increased, the haze of the dye liquid crystal layer 30 is higher, the haze of the light modulation panel 100 is higher, that is, as shown in FIG. 12c, the imaging degree of the light modulation panel 100 is lower, and the light modulation panel 100 has a privacy effect.

[0116] A fifth voltage is applied to the first electrode 12 and the second electrode 22, and a sixth voltage is applied to the third electrode 24, and the fifth voltage is greater than or less than the sixth voltage. Wherein the voltage difference between the fifth voltage and the sixth voltage is greater than a third threshold value, the third threshold value is the minimum voltage difference for deflecting the liquid crystal molecules. At this time, the third electric field is generated between the first electrode 12 and the second electrode 22 and the third electrode 24, the third electric field is partially located between the two adjacent first sub-electrodes 241, and partially located between the first electrode 12 and the third electrode 24, the third electric field includes a part perpendicular to the first substrate 10 and a part parallel to the first substrate 10. Under the action of the third electric field, the long axis direction of the at least two liquid crystal molecules 32 has an included angle, which can make the haze of the dye liquid crystal layer 30 higher.

[0117] Exemplarily, the fifth voltage is less than the sixth voltage. For example, the value of the fifth voltage is 0V, and the value of the sixth voltage is greater than the third threshold value (for example, the third threshold value is 6V, and the sixth voltage is 10V).

[0118] Exemplarily, the fifth voltage is greater than the sixth voltage. For example, the value of the fifth voltage is greater than the third threshold value (for example, the fifth voltage is 10V), and the value of the sixth voltage is 0V.

[0119] In some embodiments, as the voltage difference between the fifth voltage and the sixth voltage increases, the deflection angle of the liquid crystal molecules 32 increases, thereby changing the size of the included angle between the long axis direction of the liquid crystal molecules 32 and the third direction Z, and further changing the haze of the dye liquid crystal layer 30 and the haze of the light modulation panel 100. Wherein the third direction Z is perpendicular to the first substrate 10.

[0120] In some examples, as the voltage difference between the fifth voltage and the sixth voltage increases, the deflection angle of the liquid crystal molecules 32 increases, and the haze of the dye liquid crystal layer 30 is higher.

[0121] Exemplarily, the dye liquid crystal layer 30 includes negative liquid crystal molecules 32, and when the voltage difference between the fifth voltage and the sixth voltage is 0, the long axis direction of the plurality of liquid crystal molecules 32 is substantially parallel, and is parallel to the third direction Z. In this way, as the voltage difference between the fifth voltage and the sixth voltage increases, the deflection angle of the negative liquid crystal molecules 32 increases, that is, the angle between the long axis direction of the negative liquid crystal molecules 32 and the third direction Z increases. When the natural light is incident vertically to the first substrate 10, the angle between the long axis direction of the negative liquid crystal molecules 32 and the third direction Z increases, the refractive index n of the extraordinary light of the negative liquid crystal molecules 32 increases, the refraction angle of the extraordinary light increases, the degree of deviation of the propagation direction of the light out of the dye liquid crystal layer 30 from the propagation direction of the incident light increases, and the haze of the dye liquid crystal layer 30 can be made higher. e Exemplarily, the dye liquid crystal layer 30 includes negative liquid crystal molecules 32, and when the voltage difference between the fifth voltage and the sixth voltage is 0, the long axis direction of the plurality of liquid crystal molecules 32 is substantially parallel, and is parallel to the third direction Z. In this way, as the voltage difference between the fifth voltage and the sixth voltage increases, the deflection angle of the negative liquid crystal molecules 32 increases, that is, the angle between the long axis direction of the negative liquid crystal molecules 32 and the third direction Z increases. When the natural light is incident vertically to the first substrate 10, the angle between the long axis direction of the negative liquid crystal molecules 32 and the third direction Z increases, the refractive index n of the extraordinary light of the negative liquid crystal molecules 32 increases, the refraction angle of the extraordinary light increases, the degree of deviation of the propagation direction of the light out of the dye liquid crystal layer 30 from the propagation direction of the incident light increases, and the haze of the dye liquid crystal layer 30 can be made higher.

[0122] On the basis that the dye liquid crystal layer 30 includes negative liquid crystal molecules 32, the dye liquid crystal layer 30 further includes positive dye molecules 31. In this way, as the voltage difference between the fifth voltage and the sixth voltage increases, the deflection angle of the liquid crystal molecules increases, and the deflection angle of the positive dye molecules 31 driven by the negative liquid crystal molecules 32 increases, that is, the angle between the long axis direction of the positive dye molecules 31 and the third direction Z increases, and the absorbance of the positive dye molecules 31 increases, thereby reducing the transmittance of the visible light of the light modulation panel 100. When the light modulation panel 100 including the positive dye molecules 31 and the negative liquid crystal molecules 32 is used for a building window, the haze of the light modulation panel 100 can be increased and the transmittance of the visible light can be reduced by increasing the voltage difference between the fifth voltage and the sixth voltage. That is, the light in the room is less, that is, the room is darker, and at the same time, the privacy effect in the room is better.

[0123] On the basis that the dye liquid crystal layer 30 includes negative liquid crystal molecules 32, the dye liquid crystal layer 30 further includes negative dye molecules 31. In this way, as the voltage difference between the fifth voltage and the sixth voltage increases, the deflection angle of the liquid crystal molecules 32 increases, and the deflection angle of the negative liquid crystal molecules 32 increases. The deflection angle of the negative dye molecules 31 driven by the negative liquid crystal molecules 32 increases, that is, the angle between the long axis direction of the negative dye molecules 31 and the third direction Z increases, and the absorbance of the negative dye molecules 31 decreases, thereby increasing the transmittance of the visible light of the light modulation panel 100. When the light modulation panel 100 including the negative dye molecules 31 and the negative liquid crystal molecules 32 is used for a building window, the haze of the light modulation panel 100 can be increased and the transmittance of the visible light can be increased by increasing the voltage difference between the fifth voltage and the sixth voltage. That is, the light in the room is more, that is, the room is brighter, and at the same time, the privacy effect in the room is better.

[0124] In other examples, as the voltage difference between the fifth voltage and the sixth voltage increases, the deflection angle of the liquid crystal molecules 32 increases, and the haze of the dye liquid crystal layer 30 is lower.

[0125] Exemplarily, the dye liquid crystal layer 30 includes positive liquid crystal molecules 32. When the voltage difference between the fifth voltage and the sixth voltage is 0, the long axis directions of the plurality of positive liquid crystal molecules 32 are substantially parallel, and are perpendicular to the third direction Z.

[0126] As the voltage difference between the fifth voltage and the sixth voltage increases, the deflection angle of the long axis of the positive liquid crystal molecules 32 increases, and the angle between the positive liquid crystal molecules 32 and the third direction Z decreases. In this way, the natural light is incident perpendicularly to the first substrate 10, and the degree of deviation of the propagation direction of the light out of the dye liquid crystal layer 30 from the propagation direction of the incident light is reduced, and the haze of the dye liquid crystal layer 30 can be reduced.

[0127] On the basis that the dye liquid crystal layer 30 includes positive liquid crystal molecules 32, the dye liquid crystal layer 30 further includes positive dye molecules 31. In this way, as the voltage difference between the fifth voltage and the sixth voltage increases, the deflection angle of the long axis of the positive liquid crystal molecules 32 increases. The positive liquid crystal molecules 32 drive the positive dye molecules 31 to increase the deflection angle, that is, the angle between the long axis direction of the positive dye molecules 31 and the third direction Z decreases, and the absorbance of the positive dye molecules 31 decreases, thereby increasing the transmittance of the visible light of the light modulation panel 100. When the light modulation panel 100 including the positive dye molecules 31 and the positive liquid crystal molecules 32 is used for a building window, the haze of the light modulation panel 100 can be reduced and the transmittance of the visible light can be increased by increasing the voltage difference between the fifth voltage and the sixth voltage.

[0128] On the basis that the dye liquid crystal layer 30 includes positive liquid crystal molecules 32, the dye liquid crystal layer 30 further includes negative dye molecules 31. In this way, as the voltage difference between the fifth voltage and the sixth voltage increases, the deflection angle of the long axis of the positive liquid crystal molecules 32 increases. The positive liquid crystal molecules 32 drive the positive dye molecules 31 to increase the deflection angle, that is, the angle between the long axis direction of the positive dye molecules 31 and the third direction Z decreases, and the absorbance of the positive dye molecules 31 increases, thereby reducing the transmittance of the visible light of the light modulation panel 100. When the light modulation panel 100 including the negative dye molecules 31 and the positive liquid crystal molecules 32 is used for a building window, the haze of the light modulation panel 100 can be reduced and the transmittance of the visible light can be reduced by the voltage difference between the fifth voltage and the sixth voltage.

[0129] In some embodiments, as shown in FIG. 6 and FIG. 13, the dye liquid crystal layer 30 is further configured to adjust the deflection angle of the liquid crystal molecules 32 when the voltage of the second electrode 22 and the third electrode 24 are equal, and each has a voltage difference with the first electrode 12, wherein the long axis direction of the liquid crystal molecules 32 is substantially parallel. In this way, when the natural light passes through the dye liquid crystal layer 30, the long axis direction of the liquid crystal molecules 32 is parallel, which can make the long axis direction of the dye molecules 31 parallel, i.e. the absorbance of each dye molecule 31 is substantially the same, and further make the brightness of each area of the light modulation panel 100 substantially the same.

[0130] The seventh voltage is applied to the first electrode 12, and the eighth voltage is applied to the second electrode 22 and the third electrode 24, and the seventh voltage is greater than or less than the eighth voltage. Wherein the voltage difference between the seventh voltage and the eighth voltage is greater than the fourth threshold value, and the fourth threshold value is the minimum voltage difference for deflection of the liquid crystal molecules 32. At this time, the fourth electric field is generated between the second electrode 22 and the third electrode 24 and the first electrode 12, and the fourth electric field is perpendicular to the first substrate 10. Under the action of the fourth electric field, the long axis direction of the plurality of liquid crystal molecules 32 is parallel.

[0131] The fourth threshold value is required to deflect the plurality of liquid crystal molecules 32 with parallel long axis directions. The third threshold value is required to rotate the liquid crystal molecules 32, and is also required to have an included angle between the long axis directions of at least two liquid crystal molecules 32. Therefore, the third threshold value is greater than the fourth threshold value.

[0132] Exemplarily, the seventh voltage is less than the eighth voltage. For example, the value of the seventh voltage is 0V, and the value of the eighth voltage is greater than the fourth threshold value (for example, the fourth threshold value is 8V, and the value of the eighth voltage is 10V).

[0133] Exemplarily, the seventh voltage is greater than the eighth voltage. For example, the value of the seventh voltage is greater than the fourth threshold value (for example, the value of the seventh voltage is 10V), and the value of the eighth voltage is 0V.

[0134] In some embodiments, as the voltage difference between the seventh voltage and the eighth voltage increases, the deflection angle of the liquid crystal molecules 32 increases, the included angle between the long axis direction of the liquid crystal molecules 32 and the third direction Z increases, and the transmittance of the dye liquid crystal layer 30 changes.

[0135] In some examples, as the voltage difference between the seventh voltage and the eighth voltage increases, the deflection angle of the liquid crystal molecules 32 increases, and the transmittance of the dye liquid crystal layer 30 decreases.

[0136] Exemplarily, the dye liquid crystal layer 30 includes negative liquid crystal molecules 32 and positive dye molecules 31. When the voltage difference between the seventh voltage and the eighth voltage is 0, the long axis directions of the plurality of negative liquid crystal molecules 32 are substantially parallel, and are parallel to the third direction Z, that is, the long axis direction of the positive dye molecules 31 is parallel to the third direction Z, and the absorbance of the positive dye molecules 31 is the smallest. At this time, as shown in a of FIG. 12, the light transmittance of the light modulation panel 100 is the largest, and the light modulation panel 100 presents a bright state. That is, the light modulation panel 100 has a normally white mode.

[0137] With the increase of the voltage difference between the seventh voltage and the eighth voltage, the deflection angle of the long axis of the negative liquid crystal molecules 32 increases, and the angle between the negative liquid crystal molecules 32 and the third direction Z increases. The negative liquid crystal molecules 32 drive the deflection angle of the long axis of the positive dye molecules 31 to increase, that is, the angle between the long axis direction of the positive dye molecules 31 and the third direction Z increases, the absorbance of the positive dye molecules 31 increases, and the transmittance of the visible light of the dye liquid crystal layer 30 decreases.

[0138] As shown in FIGS. 1 and 2, when the voltage difference between the seventh voltage and the eighth voltage is large enough, the long axis direction of the negative liquid crystal molecules 32 is perpendicular to the third direction Z, that is, the long axis direction of the negative liquid crystal molecules 32 is parallel to the first substrate 10, and the long axis direction of the positive dye molecules 31 is parallel to the first substrate 10, at this time, as shown in b of FIG. 12. The absorbance of the positive dye molecules 31 is the largest. The light transmittance of the light modulation panel 100 is the smallest, and the light modulation panel 100 presents a dark state.

[0139] Exemplarily, the dye liquid crystal layer 30 includes positive liquid crystal molecules 32 and negative dye molecules 31. When the voltage difference between the seventh voltage and the eighth voltage is 0, the long axis directions of the plurality of liquid crystal molecules 32 are substantially parallel, and are perpendicular to the third direction Z, that is, the long axis direction of the negative dye molecules 31 is perpendicular to the third direction Z, and the absorbance of the negative dye molecules 31 is the smallest. At this time, the light transmittance of the light modulation panel 100 is the largest, and the light modulation panel 100 presents a bright state. That is, the light modulation panel 100 has a normally white mode.

[0140] With the increase of the voltage difference between the seventh voltage and the eighth voltage, the deflection angle of the long axis of the positive liquid crystal molecules 32 increases, and the angle between the positive liquid crystal molecules 32 and the third direction Z decreases, that is, the positive liquid crystal molecules 32 drive the deflection angle of the long axis of the negative dye molecules 31 to increase, that is, the angle between the long axis direction of the negative dye molecules 31 and the third direction Z decreases, the absorbance of the negative dye molecules increases, and the transmittance of the visible light of the dye liquid crystal layer 30 decreases.

[0141] As shown in FIG. 6, FIG. 7, FIG. 8 and FIG. 13, when the voltage difference between the seventh voltage and the eighth voltage is large enough, the long axis direction of the positive liquid crystal molecules 32 is parallel to the third direction, i.e. the long axis direction of the positive liquid crystal molecules 32 is perpendicular to the first substrate 10. The long axis direction of the negative dye molecules 31 is perpendicular to the first substrate 10, and the negative dye molecules 31 have the maximum absorbance. At this time, the light transmittance of the light modulation panel 100 is the minimum, and the light modulation panel 100 presents a dark state.

[0142] In some examples, as the voltage difference between the seventh voltage and the eighth voltage increases, the deflection angle of the liquid crystal molecules 32 increases, and the light transmittance of the dye liquid crystal layer 30 decreases.

[0143] Exemplarily, the dye liquid crystal layer 30 includes negative liquid crystal molecules 32 and negative dye molecules 31. When the voltage difference between the seventh voltage and the eighth voltage is 0, the long axis directions of the plurality of liquid crystal molecules 32 are substantially parallel, and parallel to the third direction Z, i.e. the long axis direction of the negative dye molecules 31 is parallel to the third direction Z, and the negative dye molecules 31 have the maximum absorbance. At this time, the light transmittance of the light modulation panel 100 is the minimum, and the light modulation panel 100 presents a dark state. That is, the light modulation panel 100 has a normally black mode.

[0144] As the voltage difference between the seventh voltage and the eighth voltage increases, the deflection angle of the long axis of the negative liquid crystal molecules 32 increases, and the angle between the negative liquid crystal molecules 32 and the third direction Z increases. The negative liquid crystal molecules 32 drive the deflection angle of the long axis of the negative dye molecules 31 to increase, i.e. the angle between the long axis direction of the negative dye molecules 31 and the third direction Z increases, the absorbance of the negative dye molecules 31 decreases, and the transmittance of the visible light of the dye liquid crystal layer 30 increases.

[0145] As shown in FIG. 1 and FIG. 2, when the voltage difference between the seventh voltage and the eighth voltage is large enough, the long axis direction of the negative liquid crystal molecules 32 is perpendicular to the third direction Z, i.e. the long axis direction of the negative liquid crystal molecules 32 is parallel to the first substrate 10, and the long axis direction of the positive dye molecules 31 is parallel to the first substrate 10, and the positive dye molecules 31 have the minimum absorbance. At this time, the light transmittance of the light modulation panel 100 is the maximum, and the light modulation panel 100 presents a bright state.

[0146] Exemplarily, the dye liquid crystal layer 30 includes positive liquid crystal molecules 32 and positive dye molecules 31. When the voltage difference between the seventh voltage and the eighth voltage is 0, the long axis directions of the plurality of liquid crystal molecules 32 are substantially parallel, and perpendicular to the third direction Z, i.e. the long axis direction of the positive dye molecules 31 is perpendicular to the third direction Z, and the positive dye molecules 31 have the maximum absorbance. At this time, the light transmittance of the light modulation panel 100 is the minimum, and the light modulation panel 100 presents a dark state. That is, the light modulation panel 100 has a normally black mode.

[0147] As the voltage difference between the seventh voltage and the eighth voltage increases, the deflection angle of the long axis of the positive liquid crystal molecules 32 increases, and the angle between the long axis of the positive liquid crystal molecules 32 and the third direction Z decreases. The positive liquid crystal molecules 32 drive the deflection angle of the long axis of the positive dye molecules 31 to increase, that is, the angle between the long axis direction of the positive dye molecules 31 and the third direction Z decreases, the absorbance of the positive dye molecules 31 decreases, and the transmittance of the visible light of the dye liquid crystal layer 30 increases.

[0148] As shown in FIGS. 6, 7, 8, and 13, when the voltage difference between the seventh voltage and the eighth voltage is large enough, the long axis direction of the positive liquid crystal molecules 32 is perpendicular to the first substrate 11, that is, the long axis direction of the positive dye molecules 31 is perpendicular to the first substrate 11, and the absorbance of the positive dye molecules 31 is the smallest. At this time, the light transmittance of the light modulation panel 100 is the largest, and the light modulation panel 100 presents a bright state.

[0149] In some embodiments, the first electrode 12, the second electrode 22, and the third electrode 24 are further configured to: first apply a direct current to at least one of the first electrode 12, the second electrode 22, and the third electrode 24 to adjust the distribution position of the light-absorbing particles 50, and then apply an alternating current to at least one of the first electrode 12, the second electrode 22, and the third electrode 24 to adjust the deflection angle of the liquid crystal molecules 32.

[0150] In some examples, a direct current is first applied to at least one of the first electrode 12, the second electrode 22, and the third electrode 24 to adjust the distribution position of the light-absorbing particles 50, thereby changing the transmittance of the infrared light of the light modulation panel 100. Then, an alternating current is applied to the first electrode 12, and no alternating current is applied to the second electrode 22 and the third electrode 24, so as to adjust the deflection angle of the liquid crystal molecules 32, thereby changing the transmittance of the visible light of the light modulation panel 100.

[0151] In some examples, a direct current is first applied to at least one of the first electrode 12, the second electrode 22, and the third electrode 24 to adjust the distribution position of the light-absorbing particles 50, thereby changing the transmittance of the infrared light of the light modulation panel 100. Then, no alternating current is applied to the first electrode 12 and the second electrode 22, and an alternating current is applied to the third electrode 24, so as to adjust the deflection angle of the liquid crystal molecules 32, thereby changing the haze of the light modulation panel 100.

[0152] In some embodiments, as shown in FIGS. 1-13, the plurality of first sub-electrodes 241 extend along the first direction X and are spaced apart along the second direction Y. That is, the first sub-electrode 241 is a strip-shaped electrode. The first direction X and the second direction Y intersect, for example, the first direction X and the second direction Y are perpendicular.

[0153] Exemplarily, the size of the first sub-electrode 241 along the second direction Y is 2 μm to 5 μm. For example, the size of the first sub-electrode 241 along the second direction Y is 2 μm, 3.5 μm or 5 μm. Embodiments of the present disclosure do not list one by one.

[0154] Exemplarily, the interval between two adjacent first sub-electrodes 241 is 2 μm to 5 μm. For example, the size of the first sub-electrode 241 along the second direction Y is 2 μm, 3 μm, 4 μm or 5 μm. Embodiments of the present disclosure do not list one by one.

[0155] As shown in FIG. 14, in the case that the voltage of the second electrode 22 and the third electrode 24 are equal, and both have voltage difference with the first electrode 12, along the second direction Y, from the boundary of the first sub-electrode 241 to the middle line of the first sub-electrode 241, the angle between the long axis direction of the liquid crystal molecules 32 and the third direction Z gradually changes. For example, the angle between the long axis direction of the liquid crystal molecules 32 and the third direction Z gradually changes from 90° to 0°. Wherein, the middle line of the first sub-electrode 241 refers to the line connecting the midpoints of the boundaries of the first sub-electrode 241 extending along the second direction Y.

[0156] As shown in FIG. 14, since the liquid crystal molecules 32 at the middle line of the first sub-electrode 241 are extruded by the liquid crystal molecules 32 on both sides, the long axis direction of the liquid crystal molecules 32 at the middle line of the first sub-electrode 241 is parallel to the third direction Z.

[0157] As shown in FIG. 14, along the second direction Y, from the boundary of the first sub-electrode 241 to the center of the interval between two adjacent first sub-electrodes 241, the angle between the long axis direction of the liquid crystal molecules 32 and the third direction Z gradually changes. For example, the angle between the long axis direction of the liquid crystal molecules 32 and the third direction Z gradually changes from 90° to 0°.

[0158] As shown in FIG. 14, since the liquid crystal molecules 32 at the center of the interval between two adjacent first sub-electrodes 241 are extruded by the liquid crystal molecules 32 on both sides, the long axis direction of the liquid crystal molecules 32 at the center of the interval between two adjacent first sub-electrodes 241 is parallel to the third direction Z.

[0159] In some embodiments, as shown in FIG. 1 and FIG. 15, the second electrode 22 is a continuous whole layer structure, and the third electrode 24 is located on the side of the second electrode 22 away from the second substrate 21.

[0160] Exemplarily, as shown in FIG. 1 and FIG. 15, the orthogonal projection of the second electrode 22 on the reference plane coincides with the orthogonal projection of the second substrate 21 on the reference plane. In this way, in the process of making the second electrode 22, only the conductive material such as indium tin oxide needs to be spread over the entire second substrate 21, and the preparation process of the second electrode 22 is relatively simple and convenient.

[0161] Exemplarily, as shown in FIG. 1, the second orientation layer 23 is located between the second electrode 22 and the third electrode 24, the second orientation layer 23 is configured to electrically insulate the second electrode 22 and the third electrode 24, and the second orientation layer 23 can reduce the risk of electrical connection between the second electrode 22 and the third electrode 24.

[0162] Exemplarily, as shown in FIG. 15, the second orientation layer 23 is located on the side of the third electrode 24 away from the second substrate 21, and each part of the second orientation layer 23 is in direct contact with the dye liquid crystal layer 30, which can enhance the anchoring force of the second orientation layer 23 on the plurality of liquid crystal molecules 32.

[0163] Based on the second orientation layer 23 being located on the side of the third electrode 24 away from the second substrate 21, as shown in FIG. 15, the second substrate 20 further comprises a first insulating layer 25. The first insulating layer 25 is located between the second electrode 22 and the third electrode 24, the first insulating layer 25 is configured to electrically insulate the second electrode 22 and the third electrode 24, and the first insulating layer 25 can reduce the risk of electrical connection between the second electrode 22 and the third electrode 24.

[0164] Exemplarily, the thickness of the first insulating layer 25 is 1 μm-5 μm. For example, the thickness of the first insulating layer 25 is 1 μm, 2.8 μm or 5 μm. Embodiments of the present disclosure are not listed one by one. For example, the thickness of the first insulating layer 25 is 1 μm-5 μm. For example, the thickness of the first insulating layer 25 is 1 μm, 2.8 μm or 5 μm. Embodiments of the present disclosure are not listed one by one. For example, the thickness of the first insulating layer 25 is 1 μm-5 μm. For example, the thickness of the first insulating layer 25 is 1 μm, 2.8 μm or 5 μm. Embodiments of the present disclosure are not listed one by one. Embodiments of the present disclosure are not listed one by one.

[0165] Based on the second substrate 20 further comprising the first insulating layer 25, as shown in FIG. 15, the second substrate 20 further comprises a first planarization layer 26. The first planarization layer 26 is located between the third electrode 24 and the second orientation layer 23.

[0166] The surface of the first planarization layer 26 away from the second substrate 21 is parallel to the surface of the second substrate 21 close to the dye liquid crystal layer 30, that is, the surface of the first planarization layer 26 away from the second substrate 21 is relatively flat, the surface of the first planarization layer 26 away from the second substrate 21 is in direct contact with the second orientation layer 23, so that the thickness of each part of the second orientation layer 23 is equal, that is, the thickness uniformity of the second orientation layer 23 is good. In this way, in the process of forming the second orientation layer 23, the thickness of each part of the second orientation layer 23 is consistent, which can make the forces acting on the second orientation layer 23 approximately equal, thereby improving the service life of the second orientation layer 23.

[0167] Exemplarily, the thickness of the first planarization layer 26 is 1 μm-5 μm. For example, the thickness of the first planarization layer 26 is 1 μm, 2.8 μm or 5 μm. Embodiments of the present disclosure are not listed one by one.

[0168] In some other embodiments, as shown in FIG. 16, the second electrode 22 includes a plurality of second sub-electrodes 221, which are arranged in the same layer as the first sub-electrodes 241. In this way, the thickness of the second substrate 20 can be thinner, i.e. the light modulation panel 100 can be made thinner.

[0169] As shown in FIG. 16, the second sub-electrodes 221 extend along the first direction X, i.e. the second sub-electrodes 221 are strip electrodes. Along the second direction Y, the second sub-electrodes 221 and the first sub-electrodes 241 are arranged alternately. That is, there is one second sub-electrode 221 between two adjacent first sub-electrodes 241, and / or there is one first sub-electrode 241 between two adjacent second sub-electrodes 221.

[0170] On the basis that the second substrate 20 includes the first sub-electrodes 241 and the second sub-electrodes 221, the thickness of the first sub-electrodes 241 can be equal to the thickness of the second sub-electrodes 221. The first sub-electrodes 241 and the second sub-electrodes 221 can be prepared by the following method: first, spread the entire conductive material on the second substrate 21 to form a conductive layer. Then, pattern the conductive layer to divide the conductive layer into a plurality of strip electrodes, and there is a gap between two adjacent strip electrodes. Finally, divide the plurality of strip electrodes into the first sub-electrodes 241 and the second sub-electrodes 221. In this way, the first sub-electrodes 241 and the second sub-electrodes 221 can be prepared at one time. The preparation process is simple and convenient.

[0171] On the basis that the second sub-electrodes 221 are arranged in the same layer as the first sub-electrodes 241, as shown in FIG. 16, the second substrate 20 further includes a second planarization layer 27 and a third alignment layer 28.

[0172] As shown in FIG. 16, the second planarization layer 27 is located on one side of the second electrode 22 and the third electrode 24. The surface of the second planarization layer 27 away from the second substrate 21 is parallel to the surface of the second substrate close to the dye liquid crystal layer 30, i.e. the surface of the second planarization layer 27 away from the second substrate 21 is relatively flat. The third alignment layer 28 is located on the side of the second planarization layer 27 away from the second substrate 21, and directly contacts the surface of the second planarization layer 27 away from the second substrate 21, which can make the thickness of each part of the third alignment layer 28 equal, i.e. the thickness uniformity of the third alignment layer 28 is good. In the process of forming the third alignment layer 28, the thickness of each part of the third alignment layer 28 is consistent, which can make the forces acting on the third alignment layer 28 approximately equal, thereby improving the service life of the third alignment layer 28.

[0173] On this basis, the material of the second planarization layer 27 is an insulating material, so that the second planarization layer 27 can electrically insulate the plurality of second electrodes 22 and the third electrode 24, and reduce the risk of electrical connection between the plurality of electrodes and the third electrode 24.

[0174] In some embodiments, as shown in FIG. 17, some embodiments of the present disclosure further provide a light-adjustable structure 110. The light-adjustable structure 110 comprises two light-adjustable panels 100 arranged in a stack. The light-adjustable structure 110 is the light-adjustable panel 100 of any of the above-mentioned embodiments.

[0175] As shown in FIG. 17, one of the two light-adjustable panels 100 is a first light-adjustable panel 101, and the other is a second light-adjustable panel 102.

[0176] As shown in FIG. 18, the first sub-electrode 241 in the first light-adjustable panel 101 extends along a fourth direction M4, i.e., the third electrode 24 in the first light-adjustable panel 101 is a strip-shaped electrode. The third electrode 24 in the first light-adjustable panel 101 is spaced apart along a fifth direction M5. The fourth direction M4 and the fifth direction M5 intersect, for example, the fourth direction M4 and the fifth direction M5 are perpendicular. In this way, when the voltages applied to the first electrode 12 and the second electrode 22 in the first light-adjustable panel 101 are equal, and both have a voltage difference with the third electrode 24, the long axis directions of at least two liquid crystal molecules 32 along the fifth direction M5 have an included angle. In this way, after the polarized light with the polarization direction parallel to the fifth direction M5 passes through the dye liquid crystal layer 30, the propagation direction of the polarized light is at least towards two directions, i.e., the dye liquid crystal layer 30 can cause the scattering of the polarized light with the polarization direction parallel to the fifth direction M5, thereby making the haze of the first light-adjustable panel 101 higher.

[0177] As shown in FIG. 18, the first sub-electrode 241 in the second light-adjustable panel 102 extends along a sixth direction M6, i.e., the first sub-electrode 241 in the second light-adjustable panel 102 is a strip-shaped electrode. The third electrode 24 in the second light-adjustable panel 102 is spaced apart along a seventh direction M7. The sixth direction M6 and the seventh direction M7 intersect, for example, the sixth direction M6 and the seventh direction M7 are perpendicular. In this way, when the voltages applied to the first electrode 12 and the second electrode 22 in the second light-adjustable panel 102 are equal, and both have a voltage difference with the third electrode 24, the long axis directions of at least two liquid crystal molecules 32 along the seventh direction M7 have an included angle. In this way, after the polarized light with the polarization direction parallel to the seventh direction M7 passes through the dye liquid crystal layer 30, the propagation direction of the polarized light is at least towards two directions, i.e., the dye liquid crystal layer 30 can cause the scattering of the polarized light with the polarization direction parallel to the seventh direction M7, thereby making the haze of the second light-adjustable panel 102 higher.

[0178] As shown in FIG. 18, the fourth direction M4 and the sixth direction M6 are perpendicular, i.e., the fifth direction M5 and the seventh direction M7 are perpendicular.

[0179] Since natural light is circularly polarized light, i.e., the natural light can be decomposed into first polarized light and second polarized light, the polarization direction of the first polarized light is perpendicular to the polarization direction of the second polarized light. When the natural light passes through the light control structure 110, the first light control panel 101 scatters the first polarized light, and the second light control panel 102 scatters the second polarized light. In this way, the haze of the light control structure 110 can be improved, and the imaging degree of the light control structure 110 is reduced, i.e., the privacy effect of the light control structure 110 is better.

[0180] In some embodiments, as shown in FIG. 19, the orientation direction of the first orientation layer 13 in the first light control panel 101 is the eighth direction M8. In this way, when the voltages of the second electrode 22 and the third electrode 24 in the first light control panel 101 are equal, and each has a voltage difference with the first electrode 12. Or, when the voltages on the first electrode 12, the second electrode 22 and the third electrode 24 are equal. The long axis direction of the dye molecule 31 in the first light control panel 101 is parallel, and the orthogonal projection of the long axis direction of the dye molecule 31 on the plane where the first orientation layer 13 is located is parallel or coincides with the eighth direction M8. At this time, the dye molecule 31 can absorb polarized light whose polarization direction is parallel to the eighth direction M8, so that the transmittance of visible light of the first light control panel 101 is low.

[0181] As shown in FIG. 19, the orientation direction of the first orientation layer 13 in the second light control panel 102 is the ninth direction M9. In this way, when the voltages of the second electrode 22 and the third electrode 24 in the second light control panel 102 are equal, and each has a voltage difference with the first electrode 12. Or, when the voltages on the first electrode 12, the second electrode 22 and the third electrode 24 are equal. The long axis direction of the dye molecule 31 in the second light control panel 102 is parallel, and the orthogonal projection of the long axis direction of the dye molecule 31 on the plane where the first orientation layer 13 is located is parallel or coincides with the ninth direction M9. At this time, the dye molecule 31 can absorb polarized light whose polarization direction is parallel to the ninth direction M9, so that the transmittance of visible light of the second light control panel 102 is low.

[0182] As shown in FIG. 19, the eighth direction M8 and the ninth direction M9 are perpendicular, since natural light is circularly polarized light, i.e., the natural light can be decomposed into first polarized light and second polarized light, the polarization direction of the first polarized light is perpendicular to the polarization direction of the second polarized light. When the natural light passes through the light control structure 110, the first light control panel 101 absorbs the first polarized light, and the second light control panel 102 absorbs the second polarized light. In this way, the transmittance of visible light of the light control structure 110 can be reduced, i.e., the dark state effect of the light control structure 110 can be better.

[0183] In some embodiments, the present disclosure also provides a light adjusting device, the light adjusting device comprising the light adjusting panel 100 or the light adjusting structure 110 of any of the above embodiments, the light adjusting device comprising one of a skylight, a curtain wall, a rail transit vehicle, an automobile, an advertising board, an airplane.

[0184] The light adjusting panel 100 or the light adjusting structure 110 can be applied in the field of buildings, for example, the light adjusting panel 100 or the light adjusting structure 110 is applied in a skylight or a curtain wall, the light adjusting panel 100 or the light adjusting structure 110 can be applied in a partition glass, compared with the case that a room is partitioned by a brick wall in the field of buildings, the light adjusting device of the embodiments of the present disclosure has a thinner thickness, thus, the light adjusting panel 100 or the light adjusting structure 110 can save space. The company logo can also be displayed on the partition glass. Thus, the light adjusting device comprising the light adjusting panel 100 or the light adjusting structure 110 can be, for example, a skylight, a curtain wall, etc.

[0185] The light adjusting panel 100 or the light adjusting structure 110 can also be applied in the field of transportation, for example, the light adjusting panel 100 or the light adjusting structure 110 is applied in a rail transit vehicle or an automobile. The rail transit vehicle can comprise a subway, a light rail, an air track train, a tram and a maglev train, the embodiments of the present disclosure do not list one by one. The automobile can comprise a passenger car, a commercial vehicle, a truck or a passenger car, the embodiments of the present disclosure do not list one by one. Thus, the light adjusting device comprising the light adjusting panel 100 or the light adjusting structure 110 can be, for example, a rail transit vehicle, an automobile, etc.

[0186] The light adjusting panel 100 or the light adjusting structure 110 can also be applied in the field of advertising, for example, the light adjusting panel 100 or the light adjusting device is applied in an advertising board.

[0187] The light adjusting panel 100 or the light adjusting structure 110 can also be applied in the field of flight, for example, the light adjusting panel 100 or the light adjusting device is applied in an airplane.

[0188] The embodiments of the present disclosure take the light adjusting device as an automobile 1000 for example, as shown in FIG. 20, the automobile 1000 comprises a vehicle body 1010 and a vehicle window glass 1020 installed on the vehicle body 1010, the vehicle window glass 1020 can be one or more of a front window glass, a sunroof glass, a rear window glass or a side window glass of the automobile. The vehicle window glass 1020 comprises the light adjusting panel 100 or the light adjusting structure 110 of any of the above embodiments. The light adjusting panel 100 or the light adjusting structure 110 can also be applied on a central control touch screen in the automobile 1000.

[0189] The embodiments of the present disclosure also provide a control method of the light control panel 100 according to any one of the above embodiments, the light control panel 100 having an infrared adjustment mode, wherein the control method comprises S100.

[0190] S100, applying a direct current to at least one of the first electrode 12, the second electrode 22 and the third electrode 24.

[0191] to form an electric field perpendicular to the first substrate 10 between the first substrate 10 and the second substrate 20, and to distribute the plurality of light-absorbing particles 50 on the surface of the first substrate 10 or the second substrate 20 close to the dye liquid crystal layer 30.

[0192] In some embodiments, S100 (applying a direct current to at least one of the first electrode 12, the second electrode 22 and the third electrode 24) comprises S10.

[0193] As shown in FIGS. 21 and 22, S10, a first voltage V1 is applied to the first electrode 12, and a second voltage V2 is applied to the second electrode 22 and the third electrode 24.

[0194] The first voltage V1 is greater than or less than the second voltage V2. The voltage difference between the first voltage V1 and the second voltage V2 is greater than a first threshold value, which is the minimum voltage difference for driving the light-absorbing particles 50 to move. In this way, the plurality of light-absorbing particles 50 can move to the surface of the first substrate 10 or the second substrate 20 close to the dye liquid crystal layer 30, and be uniformly distributed on the surface of the first substrate 10 or the second substrate 20 close to the dye liquid crystal layer 30. The infrared light passing through the surface of the first substrate 10 or the second substrate 20 close to the dye liquid crystal layer 30 can be absorbed by the plurality of light-absorbing particles 50, and the transmittance of the infrared light of the light control panel 100 is a first transmittance.

[0195] For example, as shown in FIG. 21, the first voltage V1 is less than the second voltage V2. For example, the value of the first voltage V1 is 0V, and the value of the second voltage V2 is greater than the first threshold value. At this time, a first electric field is generated between the first electrode 12 and the second electrode 22 and the third electrode 24, the first electric field is perpendicular to the first substrate 10, and the direction of the first electric field is from the first electrode 12 to the second electrode 22 and the third electrode 24. As shown in FIG. 21, under the action of the first electric field, the light-absorbing particles 50 move to the surface of the second substrate 20 close to the dye liquid crystal layer 30, and then the plurality of light-absorbing particles 50 are uniformly distributed on the surface of the second substrate 20 close to the dye liquid crystal layer 30. At this time, the infrared light passing through the surface of the second substrate 20 close to the dye liquid crystal layer 30 can be absorbed by the plurality of light-absorbing particles 50, and the transmittance of the infrared light of the light control panel 100 is a first transmittance.

[0196] Exemplarily, as shown in FIG. 22, the first voltage V1 is greater than the second voltage V2. For example, the value of the first voltage V1 is greater than the first threshold value, and the value of the second voltage V2 is 0 V. At this time, the first electrode 12 generates a first electric field with the second electrode 22 and the third electrode 24, the first electric field is perpendicular to the first substrate 10, and the direction of the first electric field is from the first electrode 12 to the second electrode 22 and the third electrode 24. The light-absorbing particles 50 move to the surface of the dye liquid crystal layer 30 close to the first substrate 10 under the action of the first electric field, and then the plurality of light-absorbing particles 50 are uniformly distributed on the surface of the dye liquid crystal layer 30 close to the first substrate 10. The infrared light passing through the surface of the dye liquid crystal layer 30 close to the first substrate 10 can be absorbed by the plurality of light-absorbing particles 50. At this time, the transmittance of the infrared light of the light-adjusting panel 100 is the first transmittance.

[0197] In some other embodiments, S100 (applying direct current to at least one of the first electrode 12, the second electrode 22, and the third electrode 24) includes S20.

[0198] As shown in FIG. 23, S20 includes applying a third voltage V3 to the first electrode 12 and the second electrode 22, and applying a fourth voltage V4 to the third electrode 24.

[0199] The third voltage V3 is greater than or less than the fourth voltage V4. The voltage difference between the third voltage V3 and the fourth voltage V4 is greater than a second threshold value, and the second threshold value is the minimum voltage difference for moving the light-absorbing particles 50. In this way, the plurality of light-absorbing particles 50 move to the surface of the third electrode 24 to be uniformly distributed on the surface of the dye liquid crystal layer 30 close to the second substrate 20 and the area close to the third electrode 24. That is, the plurality of light-absorbing particles 50 are uniformly distributed on the surface of the dye liquid crystal layer 30 close to the plurality of first sub-electrodes 24 and the side surface of the plurality of first sub-electrodes 24, and there is no light-absorbing particle 50 in the part of the interval between the adjacent two first sub-electrodes 241. The infrared light passing through the surface of the first sub-electrode 241 and the side surface of the first sub-electrode 241 can be absorbed by the plurality of light-absorbing particles 50, and the infrared light passing through the area without light-absorbing particles 50 in the interval between the adjacent first sub-electrodes 241 cannot be absorbed. The second transmittance is greater than the first transmittance. In this way, the voltage difference between the first electrode 12, the second electrode 22, and the third electrode 24 can be controlled to adjust the transmittance of the infrared light of the light-adjusting panel 100.

[0200] Exemplarily, the third voltage V3 is less than the fourth voltage V4. For example, the value of the third voltage V3 is 0 V, and the value of the fourth voltage V4 is greater than the second threshold value. At this time, the first electrode 12 and the second electrode 22 generate a second electric field with the third electrode 24, and the second electric field is partially located between the adjacent two first sub-electrodes 241 and partially located between the first electrode 12 and the third electrode 24.

[0201] The second electric field between the two adjacent first sub-electrodes 241 includes a portion parallel to the first substrate 10, under the action of the portion parallel to the first substrate 10 in the second electric field, the plurality of light-absorbing particles 50 are close to the side surface of the third electrode 24 in the direction parallel to the first substrate 10, and then the plurality of light-absorbing particles 50 are distributed on the side surface of the third electrode. The second electric field between the first electrode 12 and the third electrode 24 includes a portion perpendicular to the first substrate 10, under the action of the portion perpendicular to the first substrate 10 in the second electric field, the plurality of light-absorbing particles 50 are close to the surface of the dye liquid crystal layer 30 in the direction perpendicular to the first substrate 10, and then the plurality of light-absorbing particles 50 are distributed on the surface of the third electrode 24 close to the dye liquid crystal layer 30. Thus, the plurality of light-absorbing particles 50 in the dye liquid crystal layer 30 are uniformly distributed on the surface of the second substrate 20 close to the dye liquid crystal layer 30, and are located in the area close to the third electrode 24.

[0202] At this time, the infrared light passing through the surface of the second substrate 20 close to the dye liquid crystal layer 30 and located in the area close to the third electrode 24 can be absorbed by the plurality of light-absorbing particles 50, and the infrared light passing through the area between the adjacent first sub-electrodes 241 without light-absorbing particles 50 cannot be absorbed. At this time, the transmittance of the infrared light of the light modulation panel 100 is the second transmittance.

[0203] In some embodiments, the density of the plurality of light-absorbing particles 50 is equal to the density of the dye liquid crystal layer 30. After S100 (applying direct current to at least one of the first electrode 12, the second electrode 22 and the third electrode 24), the control method further includes S200.

[0204] S200, remove the direct current applied to the first electrode 12, the second electrode 22 and the third electrode 24.

[0205] The density of the plurality of light-absorbing particles 50 is equal to the density of the dye liquid crystal layer 30, which can make the gravity of the plurality of light-absorbing particles 50 equal to the buoyancy received. When the plurality of light-absorbing particles 50 are not subjected to the force of the electric field, the plurality of light-absorbing particles 50 can be suspended in the dye liquid crystal layer 30. Further, the distribution position of the light-absorbing particles 50 can remain unchanged. That is, the transmittance of the infrared light of the light modulation panel 100 can be maintained at the first transmittance or the second transmittance. The voltage can not be continuously applied to the first electrode 12, the second electrode 22 and the third electrode 24, so that the transmittance of the infrared light of the light modulation panel 100 can remain unchanged, and the electric energy can be saved.

[0206] In some embodiments, the light modulation panel 100 also has a haze adjustment mode, and in the haze adjustment mode, the control method further includes S300.

[0207] S300, applying alternating current to at least one of the second electrode 22 and the third electrode 24.

[0208] The first substrate 10 and the second substrate 20 form an electric field with a direction parallel to the first substrate 10, thereby adjusting the deflection angle of the liquid crystal molecules 32. The long axis directions of at least two liquid crystal molecules 32 have an included angle, which can make the propagation direction of the light emitted by the dye liquid crystal layer 30 at least towards two directions, thereby making the haze of the dye liquid crystal layer 30 higher.

[0209] S300 (applying alternating current to at least one of the second electrode 22 and the third electrode 24) includes S301, for example.

[0210] As shown in FIG. 24, S301, the fifth voltage V5 is applied to the first electrode 12 and the second electrode 22, the sixth voltage V6 is applied to the third electrode 24, and the fifth voltage V5 is greater than or less than the sixth voltage V6. The voltage difference between the fifth voltage V5 and the sixth voltage V6 is greater than a third threshold value, which is the minimum voltage difference for deflection of the liquid crystal molecules. At this time, the third electric field is generated between the first electrode 12 and the second electrode 22 and the third electrode 24, part of which is located between the two adjacent first sub-electrodes 241, and part of which is located between the first electrode 12 and the third electrode 24. The third electric field includes a part perpendicular to the first substrate 10 and a part parallel to the first substrate 10. Under the action of the third electric field, the long axis directions of at least two liquid crystal molecules 32 have an included angle, which can make the haze of the dye liquid crystal layer 30 higher.

[0211] For example, the fifth voltage V5 is less than the sixth voltage V6. For example, the value of the fifth voltage V5 is 0V, and the value of the sixth voltage V6 is greater than the third threshold value.

[0212] For example, the fifth voltage V5 is greater than the sixth voltage V6. For example, the value of the fifth voltage V5 is greater than the third threshold value, and the value of the sixth voltage V6 is 0V.

[0213] In some embodiments, the light modulation panel 100 also has a brightness adjustment mode, and the control method further includes S400 in the brightness adjustment mode.

[0214] S400, applying alternating current to at least one of the second electrode 22 and the third electrode 24, and the first electrode 12.

[0215] The first substrate 10 and the second substrate 20 form an electric field with a direction parallel to the first substrate 10, thereby adjusting the deflection angle of the liquid crystal molecules 32. The long axis directions of at least two liquid crystal molecules 32 have an included angle, which can make the propagation direction of the light emitted by the dye liquid crystal layer 30 at least towards two directions, thereby making the haze of the dye liquid crystal layer 30 higher.

[0216] For example, S400 (applying alternating current to at least one of the first electrode, the second electrode, and the third electrode) includes S401.

[0217] As shown in FIG. 25, S401 includes applying a seventh voltage V7 to the first electrode 12 and applying an eighth voltage V8 to the second electrode 22 and the third electrode 24.

[0218] The seventh voltage V7 is greater than or less than the eighth voltage V8. The voltage difference between the seventh voltage V7 and the eighth voltage V8 is greater than a fourth threshold value. The fourth threshold value is a minimum voltage difference that causes the liquid crystal molecules 32 to deflect. At this time, the second electrode 22 and the third electrode 24 generate a fourth electric field with the first electrode 12, and the fourth electric field is perpendicular to the first substrate. Under the action of the fourth electric field, the long axis direction of the plurality of liquid crystal molecules 32 is parallel. As the voltage difference between the seventh voltage V7 and the eighth voltage V8 increases, the deflection angle of the liquid crystal molecules 32 increases, that is, the deflection angle of the dye molecules 31 increases, the absorbance of the dye molecules 31 changes, and the transmittance of the light modulation panel 100 changes.

[0219] For example, the seventh voltage V7 is less than the eighth voltage V8. For example, the value of the seventh voltage V7 is 0V, and the value of the eighth voltage V8 is greater than the fourth threshold value.

[0220] For example, the seventh voltage V7 is greater than the eighth voltage V8. For example, the value of the seventh voltage V7 is greater than the fourth threshold value, and the value of the eighth voltage V8 is 0V.

[0221] In some embodiments, the light modulation panel 100 has an infrared haze adjustment mode. In the infrared haze adjustment mode, the control method further includes S500.

[0222] S500 includes S501-S502.

[0223] S501 includes applying direct current to at least one of the first electrode 12, the second electrode 22, and the third electrode 24.

[0224] The electric field between the first substrate 10 and the second substrate 20 has a direction perpendicular to the first substrate 10, thereby adjusting the distribution position of the plurality of light-absorbing particles 50, and the transmittance of infrared light of the light modulation panel 100 can be adjusted.

[0225] S502 includes applying alternating current to at least one of the second electrode 22 and the third electrode 24.

[0226] The electric field between the first substrate 10 and the second substrate 20 has a direction parallel to the first substrate 10, thereby adjusting the deflection angle of the liquid crystal molecules 32. The haze of the light modulation panel 100 can be adjusted.

[0227] In the description of the present specification, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in an appropriate manner.

[0228] The above description is merely a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who thinks of changes or replacements within the technical range disclosed by the present disclosure should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A control method of a light control panel, The light control panel comprises: a first substrate comprising a first electrode; a second substrate disposed opposite to the first substrate, comprising a second electrode and a third electrode, the second electrode is electrically insulated from the third electrode, and the third electrode comprises a plurality of first sub-electrodes arranged at intervals; a dye liquid crystal layer between the first substrate and the second substrate; a plurality of light-absorbing particles in the dye liquid crystal layer, the plurality of light-absorbing particles are configured to absorb infrared light; The control method comprises: applying direct current to at least one of the first electrode, the second electrode and the third electrode to form an electric field between the first substrate and the second substrate, the electric field is perpendicular to the direction of the first substrate, and the plurality of light-absorbing particles are distributed on the surface of the first substrate or the second substrate close to the dye liquid crystal layer.

2. The control method according to claim 1, wherein The applying direct current to at least one of the first electrode, the second electrode and the third electrode comprises: applying a first voltage to the first electrode, and applying a second voltage to the second electrode and the third electrode, and the first voltage is greater than or less than the second voltage; so that the plurality of light-absorbing particles are uniformly distributed on the surface of the first substrate or the second substrate close to the dye liquid crystal layer, and the voltage difference between the first voltage and the second voltage is greater than a first threshold value, the first threshold value is the minimum voltage difference for driving the light-absorbing particles to move.

3. The control method according to claim 2, wherein The second electrode and the third electrode generate a first electric field with the first electrode, the first electric field is perpendicular to the first substrate. 4.The control method of claim 2 or 3, wherein the value of the first voltage is 0V, and the value of the second voltage is greater than the first threshold value; or the value of the second voltage is 0V, and the value of the first voltage is greater than the first threshold value.

5. The control method according to any one of claims 1 to 4, wherein The applying direct current to at least one of the first electrode, the second electrode and the third electrode comprises: applying a third voltage to the first electrode and the second electrode, and applying a fourth voltage to the third electrode, and the third voltage is greater than or less than the fourth voltage; so that the plurality of light-absorbing particles are uniformly distributed on the surface of the second substrate close to the dye liquid crystal layer, and located in the region close to the third electrode, and the voltage difference between the third voltage and the fourth voltage is greater than a second threshold value, the second threshold value is the minimum voltage difference for driving the light-absorbing particles to move.

6. The control method according to claim 5, wherein The first electrode and the second electrode generate a second electric field with the third electrode, the second electric field is partially located between two adjacent first sub-electrodes, and partially located between the first electrode and the third electrode, the second electric field located between the two adjacent first sub-electrodes comprises a part parallel to the first substrate, and the second electric field located between the first electrode and the third electrode comprises a part perpendicular to the first substrate. 7.The control method of claim 5 or 6, wherein the value of the third voltage is 0V, and the value of the fourth voltage is greater than the second threshold value.

8. The control method according to any one of claims 1 to 7, wherein The density of the plurality of light-absorbing particles is equal to the density of the dye liquid crystal layer; and the control method further comprises: After the direct current is removed from the first electrode, the second electrode, and the third electrode, the distribution position of the light-absorbing particles remains unchanged.

9. The control method according to any one of claims 1 to 8, wherein The dye liquid crystal layer of the light control panel further comprises a plurality of dye molecules and a plurality of liquid crystal molecules; The control method further comprises: Applying an alternating current to at least one of the second electrode and the third electrode to form an electric field between the first substrate and the second substrate, the electric field having a direction parallel to the first substrate, so as to adjust the deflection angle of the liquid crystal molecules; wherein the long axis direction of at least two liquid crystal molecules has an included angle.

10. The control method according to claim 9, wherein The size of the liquid crystal molecule along the long axis direction is d, the wavelength of the light injected into the liquid crystal molecule is λ, the abnormal light refraction index of the liquid crystal molecule is n e , the normal light refraction index of the liquid crystal molecule is n o , and the phase difference between the abnormal light and the normal light is g; wherein d, λ, n e , n o satisfy: g = 2π(n e -n o )d / λ.

11. The control method according to claim 9 or 10, wherein The applying of the alternating current to at least one of the second electrode and the third electrode comprises: Applying a fifth voltage to the first electrode and the second electrode, and applying a sixth voltage to the third electrode, and the fifth voltage is greater than or less than the sixth voltage; wherein the voltage difference between the fifth voltage and the sixth voltage is greater than a third threshold value, and the deflection angle of the liquid crystal molecules increases as the voltage difference between the fifth voltage and the sixth voltage increases, and the third threshold value is a minimum voltage difference for deflection of the liquid crystal molecules.

12. The control method according to claim 11, wherein The first electrode and the second electrode generate a third electric field with the third electrode, the third electric field is partially located between two adjacent first sub-electrodes, and partially located between the first electrode and the third electrode, the third electric field includes a portion perpendicular to the first substrate and a portion parallel to the first substrate.

13. The control method of claim 11 or 12, wherein the value of the fifth voltage is 0V, and the absolute value of the sixth voltage is greater than the third threshold value; or the value of the sixth voltage is 0V, and the absolute value of the fifth voltage is greater than the third threshold value.

14. The control method according to any one of claims 1 to 13, wherein The dye liquid crystal layer of the light control panel further comprises a plurality of dye molecules and a plurality of liquid crystal molecules; The control method further comprises: Applying a seventh voltage to the first electrode and applying an eighth voltage to the second electrode and the third electrode, and the seventh voltage is greater than or less than the eighth voltage, so as to form an electric field between the first substrate and the second substrate, the electric field having a direction perpendicular to the first substrate; thereby adjusting the deflection angle of the liquid crystal molecules, wherein the long axis direction of the liquid crystal molecules is substantially parallel; wherein the voltage difference between the seventh voltage and the eighth voltage is greater than a fourth threshold value, and the deflection angle of the liquid crystal molecules increases as the voltage difference between the seventh voltage and the eighth voltage increases, and the fourth threshold value is a minimum voltage difference for deflection of the liquid crystal molecules.

15. The control method of claim 14, wherein the value of the seventh voltage is 0V, and the absolute value of the eighth voltage is greater than the fourth threshold value; or the value of the eighth voltage is 0V, and the absolute value of the seventh voltage is greater than the fourth threshold value.

16. The control method of any one of claims 1-15, further comprising: applying a direct current to at least one of the first electrode, the second electrode and the third electrode to form an electric field between the first substrate and the second substrate, the electric field being perpendicular to the first substrate, thereby adjusting the distribution of the plurality of light-absorbing particles; applying an alternating current to at least one of the second electrode and the third electrode to form an electric field between the first substrate and the second substrate, the electric field being parallel to the first substrate, thereby adjusting the deflection angle of the liquid crystal molecules.

17. A light-adjustable panel, comprising: a first substrate comprising a first substrate and a first electrode disposed on the first substrate; a second substrate disposed opposite to the first substrate, the second substrate comprising a second substrate and a second electrode and a third electrode disposed on the second substrate, the second electrode being electrically insulated from the third electrode, and the third electrode comprising a plurality of first sub-electrodes spaced apart; a dye liquid crystal layer between the first substrate and the second substrate; a plurality of light-absorbing particles in the dye liquid crystal layer, the plurality of light-absorbing particles being configured to absorb infrared light; the plurality of light-absorbing particles being further configured to be uniformly distributed on a surface of the first substrate or the second substrate close to the dye liquid crystal layer when the second electrode and the third electrode have equal voltages and both have a voltage difference with the first electrode, or to be uniformly distributed in an area of the second substrate close to the third electrode when the first electrode and the second electrode have equal voltages and both have a voltage difference with the third electrode.

18. The dimmer panel of claim 17, wherein, a density of the light-absorbing particles being equal to a density of the dye liquid crystal layer.

19. The dimmer panel of claim 17 or 18, wherein, the light-absorbing particles being charged particles.

20. The light-adjustable panel of any one of claims 17-19, wherein: the plurality of first sub-electrodes extend along a first direction and are spaced apart along a second direction, the first direction intersecting the second direction.

21. The dimmer panel of claim 20, wherein, a spacing between two adjacent first sub-electrodes is 2-5 μm, and a dimension of the first sub-electrodes along the second direction is 2-5 μm.

22. The dimmer panel of any of claims 17-21, wherein, the second electrode is a continuous whole layer structure, and the third electrode is located on a side of the second electrode away from the second substrate; the second substrate further comprises: a second orientation layer between the second electrode and the third electrode, configured to electrically insulate the second electrode and the third electrode.

23. The dimmer panel of any of claims 17-21, wherein, the second electrode is a continuous whole layer structure, and the third electrode is located on a side of the second electrode away from the second substrate; the second substrate further comprises: a first insulating layer between the second electrode and the third electrode; a second orientation layer on a side of the third electrode away from the second substrate.

24. The dimmer faceplate of claim 23, wherein, the second substrate further comprises: a first planarization layer between the third electrode and the second orientation layer, a surface of the first planarization layer away from the second substrate being parallel to a surface of the second substrate close to the dye liquid crystal layer, and the first planarization layer being in direct contact with the second orientation layer.

25. The dimmer panel of any of claims 17-21, wherein, The second electrode comprises a plurality of second sub-electrodes, the second sub-electrodes and the first sub-electrodes are arranged in the same layer, the second sub-electrodes and the first sub-electrodes both extend along a first direction, and are alternately distributed along a second direction, wherein the first direction intersects the second direction.

26. The dimmer faceplate of claim 25, wherein, The second substrate further comprises: a second planarization layer located on a side of the second electrode and the third electrode away from the second substrate, and a surface of the second planarization layer away from the second substrate is parallel to a surface of the second substrate close to the dye liquid crystal layer; a third orientation layer located on a side of the second planarization layer away from the second substrate, and directly in contact with a surface of the second planarization layer away from the second substrate.

27. A light-adjusting structure, comprising: two light-adjusting panels arranged in layers; the light-adjusting panels are the light-adjusting panels according to any one of claims 17-26, and the extending directions of the first sub-electrodes of the two light-adjusting panels have an included angle.

28. A light-adjusting device, comprising the light-adjusting panel according to any one of claims 17-26, or the light-adjusting structure according to claim 27; the light-adjusting device comprises one of a curtain wall, a daylighting roof, an airplane, a rail transit vehicle, and a passenger car.

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