CN211718672U - Hollow bistable liquid crystal light modulation device - Google Patents
Hollow bistable liquid crystal light modulation device Download PDFInfo
- Publication number
- CN211718672U CN211718672U CN202020442103.4U CN202020442103U CN211718672U CN 211718672 U CN211718672 U CN 211718672U CN 202020442103 U CN202020442103 U CN 202020442103U CN 211718672 U CN211718672 U CN 211718672U
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- layer
- hollow
- substrate
- transparent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Liquid Crystal (AREA)
Abstract
The utility model discloses a cavity bistable state liquid crystal device of adjusting luminance, including the first substrate layer, the liquid crystal dimming layer and the second substrate layer that set gradually, set up the cavity between liquid crystal dimming layer and the first substrate layer and/or between liquid crystal dimming layer and the second substrate layer, including cavity spacer and seal structure in the cavity, wherein the liquid crystal dimming layer includes: the display device comprises a first transparent substrate and a second transparent substrate, wherein the first transparent substrate and the second transparent substrate are parallel to each other and are arranged oppositely; a first transparent electrode formed on the inner side of the first transparent substrate; a second transparent electrode formed on the inner side of the second transparent substrate; a first alignment layer formed on the inner side of the first transparent electrode; and the bistable liquid crystal layer is arranged between the first transparent substrate and the second transparent substrate. The utility model discloses a cavity bistable liquid crystal light modulation device safe and reliable has intensity height, the isolated ultraviolet ray of part and thermal-insulated effectual advantage that gives sound insulation.
Description
Technical Field
The utility model relates to a technical field is used to the liquid crystal, in particular to cavity bistable state liquid crystal light modulation device.
Background
At present, the most common liquid crystal dimming film in a liquid crystal dimming device is a liquid crystal dimming film which is mainly composed of a transparent conductive substrate and a liquid crystal layer, the arrangement state of liquid crystal molecules is controlled in an external electric field mode, the transition of the macroscopic state of light transmission and light scattering is realized, and the functions of privacy function, office partition and the like are achieved. In a traditional light modulation device, a Polymer Dispersed Liquid Crystal (PDLC) film is mainly used, and the PDLC has the problem of large visual angle due to the transparent state, and needs to be supplied continuously in a certain state, so that the problem of high energy consumption exists. In addition, although other bistable light-adjusting devices have low power consumption compared with the PDLC film, the other bistable light-adjusting devices also have the problems of poor reliability caused by insufficient intensity, easy damage and the like, and the application scenes are limited.
Disclosure of Invention
An object of the utility model is to provide a cavity bistable state liquid crystal light modulation device to the above technical problem that exists among the prior art.
The utility model adopts the following technical scheme:
the utility model provides a cavity bistable state liquid crystal light modulation device, cavity bistable state liquid crystal light modulation device is including the first substrate layer, liquid crystal dimming layer and the second substrate layer that set gradually, liquid crystal dimming layer with set up the cavity between the first substrate layer and/or between liquid crystal dimming layer and the second substrate layer, include cavity spacer and seal structure in the cavity, wherein liquid crystal dimming layer includes:
a first transparent substrate and a second transparent substrate, the first transparent substrate and the second transparent substrate being parallel to and disposed opposite to each other;
a first transparent electrode formed on the inner side of the first transparent substrate;
a second transparent electrode formed on the inner side of the second transparent substrate;
a first alignment layer formed inside the first transparent electrode;
a bistable liquid crystal layer disposed between the first transparent substrate and the second transparent substrate.
Preferably, the liquid crystal dimming layer and the first substrate layer are bonded and fixed through a bonding layer, and the hollow cavity is arranged between the liquid crystal dimming layer and the second substrate layer.
Preferably, a vacuum is provided in the hollow cavity.
Preferably, the hollow cavity is filled with one or more of air, inert gas, aerogel or liquid.
Preferably, the first substrate layer and the second substrate layer are selected from one or more of transparent toughened glass, semi-toughened glass and non-toughened glass.
Preferably, at least one side of the first substrate layer and/or the second substrate layer further comprises one or more of an antireflection coating, an anti-radiation coating and a thermal insulation coating.
Preferably, the display device further comprises a sealant located between the first transparent substrate and the second transparent substrate.
Preferably, the liquid crystal display further comprises a plurality of support structures located between the first transparent substrate and the second transparent substrate for defining the thickness of the liquid crystal layer.
Preferably, the liquid crystal display further comprises a second alignment layer formed inside the second transparent electrode.
Preferably, the first transparent electrode and the second transparent electrode are both arranged in a whole layer or at least one of the first transparent electrode and the second transparent electrode is a patterned transparent electrode, and the patterned transparent electrode can be driven in a whole body or in a partition manner.
The utility model discloses a cavity bistable liquid crystal light modulation device safe and reliable has intensity height, the isolated ultraviolet ray of part and thermal-insulated effectual advantage that gives sound insulation.
Drawings
The invention may be better understood by referring to the illustrations of embodiments of the invention in which:
fig. 1 is a schematic diagram of the overall structure of a hollow bistable liquid crystal light modulator device according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a liquid crystal dimming layer in a hollow bistable liquid crystal dimming device according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of a liquid crystal dimming layer in a hollow bistable liquid crystal dimming device according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of a liquid crystal dimming layer in a hollow bistable liquid crystal dimming device according to a third embodiment of the present invention;
fig. 5 is a schematic structural diagram of a liquid crystal dimming layer in a hollow bistable liquid crystal dimming device according to a fourth embodiment of the present invention;
fig. 6 is a schematic diagram of an overall structure of a hollow bistable liquid crystal light modulator according to a fifth embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, it will be apparent to those skilled in the art that the present invention may be practiced without these specific details. The illustrated example embodiments of the present invention are provided for illustration only and not to limit the invention. Therefore, the scope of the present invention is not limited by the specific embodiments, but only by the scope of the appended claims.
The following describes the hollow bistable liquid crystal light modulator according to embodiments of the present invention in detail with reference to the accompanying drawings.
The first embodiment:
fig. 1 is the utility model discloses the overall structure schematic diagram of the cavity bistable state liquid crystal light modulation device of first embodiment, fig. 2 is the utility model discloses the structure schematic diagram of liquid crystal light modulation layer in the cavity bistable state liquid crystal light modulation device of first embodiment, it is shown with fig. 2 to combine fig. 1, the cavity bistable state liquid crystal light modulation device of this embodiment is including the first substrate layer 100 that sets gradually, liquid crystal light modulation layer 300 and second substrate layer 200, in this embodiment, bond fixedly through tie coat 400 between liquid crystal light modulation layer 300 and the first substrate layer 100, set up hollow cavity 500 between liquid crystal light modulation layer 300 and the second substrate layer 200, the realization is all strengthened the protection to the both sides of liquid crystal light modulation layer 300. The hollow cavity 500 is arranged, so that the heat insulation, sound insulation, ultraviolet isolation and other performances of the hollow bistable liquid crystal light-adjusting device are greatly improved, and the overall mechanical strength and reliability are greatly improved. In this embodiment, can be the vacuum in the hollow cavity 500, also can fill one or more in air, inert gas, aerogel or the liquid, can reach effects such as better thermal-insulated, sound insulation according to different scene needs.
As shown in fig. 1, a hollow spacer 600 defining the thickness of the hollow cavity 500 is disposed in the hollow cavity 500, and preferably, the hollow spacer 600 is disposed at the edge of the hollow cavity 500, but is not limited thereto, and a plurality of hollow spacers 600 may be disposed at any position in the middle of the hollow bistable liquid crystal light modulation device, while defining the thickness and providing sufficient supporting strength, especially when a vacuum is applied in the hollow cavity 500. The hollow spacer 600 disposed at the middle position of the hollow bistable liquid crystal light modulator may be made of the same material as the hollow spacer 600 disposed at the edge of the hollow cavity 500, or may be made of a different material, and preferably, the hollow spacer disposed at the middle position of the hollow bistable liquid crystal light modulator is made of a transparent material, so that the overall optical performance of the hollow bistable liquid crystal light modulator is not affected while the hollow bistable liquid crystal light modulator is not cracked or deformed due to the external atmospheric pressure. The hollow spacer 600 provides a fixed cavity thickness for the hollow cavity 500, and the hollow spacer 600 may be a polymer, metal or non-metal spacer in the shape of a strip, a sheet, a column, a sphere, etc., for example, the hollow spacer 600 at the edge uses a continuous or discontinuous adhesive tape or a metal aluminum frame, and is adhered and fixed by coating an adhesive glue on the side adjacent to the liquid crystal dimming layer 300 and the second substrate layer 200. In this embodiment, a sealing structure (not shown) is disposed around the hollow cavity 500, and the sealing structure can limit the gas or liquid filled in the hollow cavity therein, and prevent external impurities such as moisture or dust from entering the hollow cavity 500 to affect the performance of the hollow bistable liquid crystal dimmer. In addition, the hollow cavity 500 may be filled with a desiccant, so as to absorb moisture entering the hollow cavity 500 in time and keep the interior of the hollow cavity 500 dry.
In this embodiment, the adhesive layer 400 is selected from one or more of PVB, SGP, EVA, PVC, and POE, and the thickness of the adhesive layer 400 ranges from 0.1mm to 2 mm. In this embodiment, the main function of tie coat 400 is to bond first substrate layer 100 and liquid crystal dimming layer 300, and tie coat 400 itself has certain intensity, receives the impact back, not only can play the effect that prevents the substrate and drop through the surperficial bonding substrate, can also rely on intensity and the cohesiveness of self to prevent to take place to drop or separate after first substrate layer 100 is broken, further improves holistic stability. The adhesive layer 400 may be selected from one or more of PVB (polyvinyl butyral), SGP (ionic intermediate film), EVA (ethylene vinyl acetate), PVC (polyvinyl chloride), POE (polyolefin elastomer), and PU (polyurethane), but is not limited thereto, and the material of the adhesive layer 400 may be selected as needed, for example, an adhesive layer having a function of isolating partial ultraviolet rays may be selected, and a material having an ultraviolet absorption function may be added to the adhesive layer 400 as needed to enhance the function of isolating ultraviolet rays. Meanwhile, the first substrate layer 100, the second substrate layer 200 and the bonding layer 400 can be made of materials with heat and sound insulation functions, so that the overall heat and sound insulation effect of the liquid crystal dimming device can be improved.
In this embodiment, as shown in fig. 2, the liquid crystal dimming layer 300 further includes: a first transparent substrate 10 and a second transparent substrate 20, the first transparent substrate 10 and the second transparent substrate 20 being parallel to and facing each other; a first transparent electrode 31 formed inside the first transparent substrate 10; a second transparent electrode 32 formed inside the second transparent substrate 20; a first alignment layer 40 formed inside the first transparent electrode 31; the liquid crystal layer 60 disposed between the first transparent substrate 10 and the second transparent substrate 20, the liquid crystal layer 60 includes cholesteric liquid crystal capable of realizing bistable state, but the present invention is not limited thereto, and other types of liquid crystal materials capable of realizing bistable state can be adopted.
In the present embodiment, the first substrate layer 100 and the second substrate layer 200 are selected from one or more of transparent tempered glass, semi-tempered glass, zone tempered glass, and non-tempered glass. Preferably, the first substrate layer 100 and/or the second substrate layer 200 are selected from transparent tempered glass, and the liquid crystal layer 60 adopts cholesteric liquid crystal, so that the hollow bistable liquid crystal light modulation device can realize switching between two stable states of a transparent state and a fog state, and meanwhile, the first substrate layer 100, the second substrate layer 200, the first transparent substrate 10 and the second transparent substrate 20 are prevented from being cracked and splashed due to accidents or natural disasters, and the safety is improved. For example, the first substrate layer 100 and the second substrate layer 200 are selected from transparent tempered glass, so that the tempered glass can not be cracked and splashed to cause injury accidents even after being cracked by external impact, and the internally cracked tempered glass can still keep the whole integrity, can not be cracked and collapsed and can keep a certain bearing capacity. In this embodiment, without being limited thereto, the first substrate layer 100 and/or the second substrate layer 200 may also be made of a material containing one or more materials of a metal wire mesh, ultraviolet absorbing particles, and infrared absorbing particles. For example, the first substrate layer 100 and the second substrate layer 200 are made of glass in which a wire mesh is disposed, which is also called wired glass or shatterproof glass, and are manufactured by pressing a preheated iron wire or wire mesh into the middle of glass when common plate glass is heated to a red heat softening state; the first substrate layer 100 and the second substrate layer 200 can also adopt glass with ultraviolet absorption particles added therein, which can absorb ultraviolet radiation and can keep good visible light transmittance; the first substrate layer 100 and the second substrate layer 200 may also be heat absorbing glass made of glass added with infrared absorbing particles, which can absorb infrared radiation and maintain good visible light transmittance, and the heat absorbing glass has high heat absorbing performance because the glass is colored by introducing oxides playing a color role into common glass. In this embodiment, the first substrate layer 100 and/or the second substrate layer 200 may be made of a material containing one or more materials selected from a metal wire mesh, ultraviolet absorbing particles, and infrared absorbing particles, and have more excellent additional functions of explosion prevention, electromagnetic shielding, and ultraviolet or infrared light absorption. However, the present invention is not limited to this, and the ultraviolet absorbing particles and the infrared absorbing particles may be distributed in the bonding layer 400, or distributed in at least two layers of the first substrate layer 100, the second substrate layer 200 and the bonding layer 400 at the same time, for example, and are not described again.
In the embodiment of the present invention, the hollow bistable liquid crystal light modulator may further include one or more of an anti-reflection coating, an anti-radiation coating, and a thermal insulation coating disposed on at least one side of the first substrate layer 100 and/or the second substrate layer 200, for example, the first substrate layer 100 and the second substrate layer 200 are made of glass, and one or more layers of metal, alloy, or metal compound films are coated on the surface of the glass to change the optical performance of the glass and meet a specific requirement. The coated glass can be classified into heat reflective glass, Low-emissivity glass (Low-E), conductive film glass, etc. according to different characteristics of the product, in this embodiment, for example, an optical coating can be further applied to one or both surfaces of the glass to reduce the reflectivity and further increase the light transmittance, so as to form anti-reflection glass (also called anti-reflection glass), reduce surface glare and increase the light transmittance and brightness of the substrate, and simultaneously reduce the surface reflectivity of a specific light wave to provide better contrast definition. In this embodiment, the first substrate layer 100 and/or the second substrate layer 200 may have additional functions of explosion prevention, electromagnetic shielding, ultraviolet or infrared light absorption, anti-reflection, radiation resistance, heat insulation, and the like by disposing a specific material inside the first substrate layer 100 and/or the second substrate layer 200 or disposing a plating layer on the outer surface thereof. In this embodiment, the thickness ranges of the first substrate layer 100 and the second substrate layer 200 are preferably 0.01mm to 20mm, and the substrate can be widely applied to buildings, automobile doors and windows, glass curtain walls, indoor partitions, partitions of airplanes and ships, doors and windows, and the like.
As shown in fig. 2, in the present embodiment, the liquid crystal layer 60 uses, for example, cholesteric liquid crystal, and the first alignment layer 40 provides an initial alignment angle for the cholesteric liquid crystal in the liquid crystal layer 60, so as to achieve a fast response along a predetermined direction after driving, and facilitate more stable arrangement of the liquid crystal. The types of the first alignment layer 40 include a substantially planar alignment type and a substantially vertical alignment type. The orientation mode includes rubbing orientation, photo-control orientation, inclined evaporation method orientation, LB film method orientation, etc., and will not be described in detail.
In this embodiment, the first transparent electrode 31 and the second transparent electrode 32 are both disposed in a whole layer, and the first transparent electrode 31 and the second transparent electrode 32 are preferably made of ITO, but not limited thereto, the first transparent electrode 31 and the second transparent electrode 32 may also be made of a carbon-based conductive film, a metal nanowire conductive film, a metal oxide conductive film, and the like, wherein the carbon-based conductive film mainly includes two types of graphene oxide and carbon nanotube, the metal nanowire conductive film commonly includes silver nanowire, copper nanowire, and the like, and the metal oxide film includes a mixture of indium tin oxide, indium oxide, tin oxide, zinc oxide, and other metal oxides.
In this embodiment, as shown in fig. 2, the liquid crystal dimming layer 300 of the hollow bistable liquid crystal dimming device further includes a sealant 70 and a supporting structure 80 between the first transparent substrate 10 and the second transparent substrate 20. In this embodiment, the sealant 70 is located between the first transparent substrate 10 and the second transparent substrate 20, and is used for bonding and fixing the first transparent substrate 10 and the second transparent substrate 20, and forms a closed space together with the first transparent substrate 10 and the second transparent substrate 20 to accommodate the liquid crystal layer 60 therebetween. The sealant 70 includes a thermal curing adhesive (such as a common epoxy resin) and a photo curing adhesive (such as a common UV adhesive); and UV heating the hybrid glue. In the embodiment of the present invention, the sealant 70 is made of UV curable adhesive K-3357 manufactured by koxter corporation, for example. In the embodiment of the present invention, the supporting structure 80 is located between the first transparent substrate 10 and the second transparent substrate 20 for limiting the thickness of the liquid crystal layer 60, and the supporting structure 80 can be distributed anywhere between the first transparent substrate 10 and the second transparent substrate 20, including in the frame glue. In this embodiment, the support structure 80 is preferably a spacer. The material of the spacer includes resin, glass fiber, and inorganic materials such as polystyrene, silica, and the like. The spacers may be spherical, rod-like, columnar, or otherwise shaped. The size of the spacers depends on the thickness of the liquid crystal layer. In the preferred embodiment of the present invention, the uniformity of the thickness of the liquid crystal layer 60 can be controlled by means of the device having the pressing function.
The embodiment of the present invention provides a liquid crystal display device, wherein the first transparent substrate 10 and the second transparent substrate 20 are selected from one or more of glass or PET (polyethylene terephthalate), PEN (polyethylene naphthalate), PC (polycarbonate), PP (polypropylene), PMMA (polymethyl methacrylate), PBT (polybutylene terephthalate), PVC (polyvinyl chloride), PI (polyimide), and transparent polymer materials such as cellulose, and the first transparent substrate 10 and the second transparent substrate 20 are used for bearing each film layer thereon and forming a smooth external protection structure of the hollow bistable liquid crystal light modulator.
The hollow bistable liquid crystal light modulation device of the embodiment has a fog state and a transmission state which are stable in zero electric field, and does not need to be continuously powered to maintain a certain state, so that the power consumption is low. Meanwhile, the hollow cavity is arranged between the liquid crystal dimming layer and the substrate layer, so that the liquid crystal dimming layer has the advantages of wide application scene, safety, reliability, high strength, partial ultraviolet isolation and good heat and sound insulation effects.
Second embodiment:
the same parts of this embodiment as those of the first embodiment are not repeated, and the difference is that in this embodiment, the liquid crystal light modulating layer 300 further includes a second alignment layer 50 formed inside the second transparent electrode 32.
Fig. 3 is a schematic structural diagram of a liquid crystal dimming layer in a hollow bistable liquid crystal dimming device according to a second embodiment of the present invention, as shown in fig. 3, in this embodiment, the first transparent electrode 31 and the second transparent electrode 32 are both disposed in a whole layer, and the first alignment layer 40 and the second alignment layer 50 provide an initial alignment angle for cholesteric liquid crystal in the liquid crystal layer 60, so as to achieve fast response along a predetermined direction after driving, and meanwhile, facilitate more stable arrangement when the liquid crystal is in a bistable state.
The hollow bistable liquid crystal light modulation device of the embodiment has a fog state and a transmission state which are stable in zero electric field, and does not need to be continuously powered to maintain a certain state, so that the power consumption is low. Meanwhile, the hollow cavity is arranged between the liquid crystal dimming layer and the substrate layer, so that the liquid crystal dimming layer has the advantages of wide application scene, safety, reliability, high strength, partial ultraviolet isolation and good heat and sound insulation effects.
The third embodiment:
the same parts of this embodiment as the second embodiment are not repeated, and the difference is that in this embodiment, the first transparent electrode 31 in the liquid crystal dimming layer 300 is a patterned transparent electrode.
Fig. 4 is a schematic structural diagram of a liquid crystal dimming layer in a hollow bistable liquid crystal dimming device according to a third embodiment of the present invention, as shown in fig. 4, in this embodiment, the first transparent electrode 31 is a patterned transparent electrode, the patterned transparent electrode is, for example, a louver structure composed of a plurality of spaced bars, for example, the first transparent electrode 31 is a plurality of mutually insulated bar-shaped transparent electrodes formed by etching, the odd and even transparent electrodes can be driven respectively, in this embodiment, the second transparent electrode 32 is arranged in a whole layer, by controlling the intensity of electric field between different regions of the first transparent electrode 31 and the second transparent electrode 32, different arrangement states of liquid crystal in the liquid crystal layer therebetween are realized, and then two bistable states of a transmission state and a fog state of the liquid crystal dimming device are realized. In the hollow bistable liquid crystal light modulator in the present embodiment, taking the first transparent electrode 31 as an example of a plurality of patterned strip electrodes, it is possible to realize a louver structure in which the odd number of transparent electrode regions are in a transmissive state and the even number of transparent electrode regions are in a foggy state, or realize a louver structure in which the odd number of transparent electrode regions are in a foggy state and the even number of transparent electrode regions are in a transmissive state, or realize dynamic use of mutual switching between the odd number of transparent electrode regions and the even number of transparent electrode regions by timing control. Preferably, the size of the insulating gap between the plurality of strip-shaped regions is not greater than 100 micrometers, the odd transparent electrode regions and the even transparent electrode regions can be driven simultaneously to enable the whole liquid crystal dimming device to be in a transmission state or a fog state, and the regions except the insulating gap can basically achieve the effect that the whole liquid crystal dimming device is in the transmission state or the fog state (because the liquid crystal in the insulating gap region between the plurality of strip-shaped regions is not controlled by an external electric field, the smaller the gap, the smaller the influence on the whole device). But not limited thereto, the strip-shaped transparent electrodes may be distributed and connected to a plurality of external drivers in any combination to realize different regions or different timing control, for example, as required, and are not described in detail. The utility model discloses in, the pattern of patterned transparent electrode is not limited to the bar pattern of above example, and the pattern of patterned first transparent electrode 31 can also be for circular, polygon, wave, characters, picture or its combination etc. as long as can constitute the characters or the pattern that have certain instruction function or pleasing to the eye function all can, no longer gives unnecessary details. The hollow bistable liquid crystal dimmer of the present embodiment comprises two states of zero electric field stability: a transmissive state that substantially transmits incident light, and a foggy state that substantially scatters incident light. The patterned first transparent electrode 31 may be integrally or sectionally connected to one or more external drivers, so that the first transparent electrode 31 and the second transparent electrode 32 may be directly driven according to actual needs, and the switching of the hollow bistable liquid crystal light modulator between the transmission state and the fog state is locally controlled.
The hollow bistable liquid crystal light modulation device of the embodiment has a fog state and a transmission state which are stable in zero electric field, and does not need to be continuously powered to maintain a certain state, so that the power consumption is low. Meanwhile, the hollow cavity is arranged between the liquid crystal dimming layer and the substrate layer, so that the liquid crystal dimming layer has the advantages of wide application scene, safety, reliability, high strength, partial ultraviolet isolation and good heat and sound insulation effects.
The fourth embodiment:
in this embodiment, the same parts as those in the third embodiment are not repeated, and the difference is that in this embodiment, the first transparent electrode 31 and the second transparent electrode 32 in the liquid crystal dimming layer 300 are both patterned transparent electrodes.
Fig. 5 is a schematic structural diagram of a liquid crystal dimming layer in a hollow bistable liquid crystal dimming device according to a fourth embodiment of the present invention, as shown in fig. 5, in this embodiment, positions of the patterned first transparent electrode 31 and the patterned second transparent electrode 32 correspond to each other, preferably, the patterned first transparent electrode 31 and the patterned second transparent electrode 32 have the same pattern, and sizes of portions of the pattern are also the same, but not limited thereto, the patterns of the patterned first transparent electrode 31 and the patterned second transparent electrode may also be set to be different patterns or different sizes of portions of the pattern according to actual needs, but at least an area overlapping up and down should be provided, and details are not repeated. The hollow bistable liquid crystal dimmer of the present embodiment also includes two zero-electric-field stable states: a transmissive state that substantially transmits incident light, and a foggy state that substantially scatters incident light. The patterned first transparent electrode 31 and the patterned second transparent electrode 32 may be integrally or sectionally connected to one or more external drivers, so that the first transparent electrode 31 and the second transparent electrode 32 may be driven according to actual needs, and the hollow bistable liquid crystal light modulator is locally controlled to realize control switching of a local transmission state or a fog state, which is not described in detail.
In this embodiment, for example, the first transparent electrode 31 and the second transparent electrode 32 are both in the shape of a strip, and after being connected to an external driver, the hollow bistable liquid crystal light modulation device of this embodiment can realize the structure of a louver, and realize the control and switching of the transmission state or the fog state in the region where the first transparent electrode 31 and the second transparent electrode 32 are located. But not limited thereto, the first transparent electrode 31 and the second transparent electrode 32 may also respectively adopt other characters or patterns or a combination thereof as needed to realize the control switching of more patterned transmission states or fog states so as to adapt to more other application scenarios, and further description is omitted.
The hollow bistable liquid crystal light modulation device of the embodiment has a fog state and a transmission state which are stable in zero electric field, and does not need to be continuously powered to maintain a certain state, so that the power consumption is low. Meanwhile, the hollow cavity is arranged between the liquid crystal dimming layer and the substrate layer, so that the liquid crystal dimming layer has the advantages of wide application scene, safety, reliability, high strength, partial ultraviolet isolation and good heat and sound insulation effects.
Fifth embodiment:
in this embodiment, the same parts as those in the first to fourth embodiments are not repeated, and the difference is that in this embodiment, hollow cavities 500 are disposed between the liquid crystal light modulation layer 300 and the first substrate layer 100, and between the liquid crystal light modulation layer 300 and the second substrate layer 200.
Fig. 6 is the utility model discloses the overall structure schematic diagram of cavity bistable state liquid crystal light modulation device of fifth embodiment, as shown in fig. 6, in this embodiment, liquid crystal light modulation layer 300 and first substrate layer 100, all set up cavity 500 between liquid crystal light modulation layer 300 and the second substrate layer 200, can be the vacuum in the cavity 500, or cavity 500 intussuseption is filled with the air, inert gas, one or more in aerogel or the liquid, with reach better thermal-insulated according to different scene needs, effect such as syllable-dividing, can protect the liquid crystal light modulation layer 300 that is located its inside when improving bulk strength, reduce steam, external environment such as ultraviolet ray is to the erosion damage of liquid crystal light modulation layer 300. As shown in fig. 6, it is preferable that the hollow spacer 600 is located at the edge of the hollow cavity 500, but it is not limited thereto, and a plurality of hollow spacers 600 may be further provided at any position in the middle of the hollow bistable liquid crystal dimming device, to define a thickness while providing sufficient supporting strength, especially when a vacuum is applied in the hollow cavity 500. The hollow spacer 600 disposed at the middle position of the hollow bistable liquid crystal light modulator may be made of the same material as the hollow spacer 600 disposed at the edge of the hollow cavity 500, or may be made of a different material, and preferably, the hollow spacer disposed at the middle position of the hollow bistable liquid crystal light modulator is made of a transparent material, so that the overall optical performance of the hollow bistable liquid crystal light modulator is not affected while the hollow bistable liquid crystal light modulator is not cracked or deformed due to the external atmospheric pressure. The hollow spacer 600 provides a fixed cavity thickness for the hollow cavity 500, and the hollow spacer 600 may be a polymer, metal or non-metal spacer in the shape of a strip, a sheet, a column, a sphere, etc., for example, the hollow spacer 600 at the edge uses a continuous or discontinuous adhesive tape or a metal aluminum frame, and is adhered and fixed by coating an adhesive glue on the side adjacent to the liquid crystal dimming layer 300 and the second substrate layer 200. In this embodiment, a sealing structure (not shown) is disposed around the hollow cavity 500, and the sealing structure can limit the gas or liquid filled in the hollow cavity therein, and prevent external impurities such as moisture or dust from entering the hollow cavity 500 to affect the performance of the hollow bistable liquid crystal dimmer. In addition, the hollow cavity 500 may be filled with a desiccant, so as to absorb moisture entering the hollow cavity 500 in time and keep the interior of the hollow cavity 500 dry. In this embodiment, the liquid crystal dimming layer 300 may adopt any structure as in the first to fourth embodiments, and details thereof are not repeated.
The hollow bistable liquid crystal light modulation device has a fog state and a transmission state which are stable in zero electric field, and does not need to continuously supply power to maintain a certain state, so that the power consumption is low, and the local area control of the transmission state or the fog state can be realized according to the requirement. Meanwhile, the hollow cavity is arranged between the liquid crystal dimming layer and the substrate layer, so that the liquid crystal dimming layer has the advantages of wide application scene, safety, reliability, high strength, partial ultraviolet isolation and good heat and sound insulation effects.
The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.
Claims (10)
1. The hollow bistable liquid crystal dimming device is characterized by comprising a first substrate layer, a liquid crystal dimming layer and a second substrate layer which are sequentially arranged, wherein a hollow cavity is arranged between the liquid crystal dimming layer and the first substrate layer and/or between the liquid crystal dimming layer and the second substrate layer, a hollow spacer and a sealing structure are arranged in the hollow cavity, and the liquid crystal dimming layer comprises:
a first transparent substrate and a second transparent substrate, the first transparent substrate and the second transparent substrate being parallel to and disposed opposite to each other;
a first transparent electrode formed on the inner side of the first transparent substrate;
a second transparent electrode formed on the inner side of the second transparent substrate;
a first alignment layer formed inside the first transparent electrode;
a bistable liquid crystal layer disposed between the first transparent substrate and the second transparent substrate.
2. The hollow bistable liquid crystal light-adjusting device of claim 1, wherein said liquid crystal light-adjusting layer is bonded and fixed to said first substrate layer by an adhesive layer, and said hollow cavity is provided between said liquid crystal light-adjusting layer and said second substrate layer.
3. The hollow bistable liquid crystal dimmer device of claim 1 or 2, wherein said hollow cavity is evacuated.
4. The hollow bistable liquid crystal dimmer device of claim 1 or 2, wherein said hollow cavity is filled with one or more of air, inert gas, aerogel or liquid.
5. The hollow bistable liquid crystal dimmer device of claim 1, wherein said first substrate layer and said second substrate layer are selected from one or more of transparent tempered glass, semi-tempered glass, and non-tempered glass.
6. The hollow bistable liquid crystal dimming device of claim 1, wherein at least one side of said first substrate layer and/or said second substrate layer further comprises one or more of an anti-reflective coating, an anti-radiation coating, and a thermal barrier coating.
7. The hollow bistable liquid crystal light modulator of claim 1, further comprising a sealant disposed between said first transparent substrate and said second transparent substrate.
8. The hollow bistable liquid crystal dimmer device of claim 7, further comprising a plurality of support structures positioned between said first transparent substrate and said second transparent substrate for defining a thickness of said liquid crystal layer.
9. The hollow bistable liquid crystal dimmer device of claim 1, further comprising a second alignment layer formed inside said second transparent electrode.
10. The hollow bistable liquid crystal dimmer device of claim 1, wherein said first transparent electrode and said second transparent electrode are disposed in a single layer or at least one of them is a patterned transparent electrode, and said patterned transparent electrode is either driven in bulk or in regions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020442103.4U CN211718672U (en) | 2020-03-31 | 2020-03-31 | Hollow bistable liquid crystal light modulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020442103.4U CN211718672U (en) | 2020-03-31 | 2020-03-31 | Hollow bistable liquid crystal light modulation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211718672U true CN211718672U (en) | 2020-10-20 |
Family
ID=72834936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020442103.4U Active CN211718672U (en) | 2020-03-31 | 2020-03-31 | Hollow bistable liquid crystal light modulation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211718672U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113625484A (en) * | 2021-09-24 | 2021-11-09 | 京东方科技集团股份有限公司 | Dimming glass, preparation method thereof and glass device |
| CN115421335A (en) * | 2022-09-21 | 2022-12-02 | 浙江极氪智能科技有限公司 | Dimming panel, manufacturing method thereof, dimming device, dimming system and vehicle |
| CN116009298A (en) * | 2021-10-22 | 2023-04-25 | 江苏集萃智能液晶科技有限公司 | Liquid crystal dimming device |
| CN117850157A (en) * | 2024-01-10 | 2024-04-09 | 无锡迪思微电子有限公司 | Substrate structure, photomask and preparation method thereof |
-
2020
- 2020-03-31 CN CN202020442103.4U patent/CN211718672U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113625484A (en) * | 2021-09-24 | 2021-11-09 | 京东方科技集团股份有限公司 | Dimming glass, preparation method thereof and glass device |
| CN113625484B (en) * | 2021-09-24 | 2023-10-20 | 京东方科技集团股份有限公司 | Dimming glass, preparation method thereof and glass device |
| CN116009298A (en) * | 2021-10-22 | 2023-04-25 | 江苏集萃智能液晶科技有限公司 | Liquid crystal dimming device |
| CN115421335A (en) * | 2022-09-21 | 2022-12-02 | 浙江极氪智能科技有限公司 | Dimming panel, manufacturing method thereof, dimming device, dimming system and vehicle |
| CN115421335B (en) * | 2022-09-21 | 2024-04-26 | 浙江极氪智能科技有限公司 | Dimming panel, preparation method thereof, dimming device, dimming system and vehicle |
| CN117850157A (en) * | 2024-01-10 | 2024-04-09 | 无锡迪思微电子有限公司 | Substrate structure, photomask and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211718672U (en) | Hollow bistable liquid crystal light modulation device | |
| CN110636940B (en) | High performance privacy glazing structure | |
| JP6374508B2 (en) | Smart glass structure and window glass for transportation | |
| US9651847B2 (en) | Electrophoretic insulated glass unit | |
| US20220276525A1 (en) | Film-to-glass switchable glazing | |
| KR20170133453A (en) | Lighting glass panels for buildings, furniture items or public transportation vehicles | |
| CN104460169A (en) | Electrode plate, and electrochromic plate, electrochromic mirror and display device using the same | |
| TW201632957A (en) | Device for the regulation of light transmission | |
| WO2021115246A1 (en) | Dimming glass and glass module | |
| US11934055B2 (en) | Electrical connection configurations for privacy glazing structures | |
| CN201600528U (en) | Automobile smart glass | |
| KR20210045410A (en) | Privacy glazing structure with asymmetric pane offset for electrical connection configuration | |
| CN210514886U (en) | Light-adjusting glass | |
| CN203037966U (en) | Plane structure of light-regulating liquid crystal film | |
| CN211293542U (en) | Doubling bistable liquid crystal light modulation device | |
| KR101961178B1 (en) | Pannel or window having pdlc film and multi-layered window used thereof | |
| JP2024038135A (en) | Light transmissive panel having active component | |
| KR20130003732U (en) | Plane structure of polymeric dispersed liquid crystal film | |
| CN113960840A (en) | Light modulation panel | |
| CN201788342U (en) | Electrochromic reflector | |
| CN206387978U (en) | The double glazing of built-in film plastic cement liquid crystal | |
| CN215910756U (en) | Light modulation unit and light modulation device | |
| CN215895169U (en) | Light-adjusting glass | |
| KR20220163025A (en) | Outdoor Display Device | |
| CN201477328U (en) | Electrical poling atomization glass based on hollow glass structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |