CN215117094U - Liquid crystal light adjusting film with static pattern - Google Patents
Liquid crystal light adjusting film with static pattern Download PDFInfo
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- CN215117094U CN215117094U CN202120366595.8U CN202120366595U CN215117094U CN 215117094 U CN215117094 U CN 215117094U CN 202120366595 U CN202120366595 U CN 202120366595U CN 215117094 U CN215117094 U CN 215117094U
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Abstract
The utility model discloses a liquid crystal membrane of adjusting luminance with static pattern. The liquid crystal dimming film with the static pattern comprises a first substrate, a first conducting layer, a second conducting layer and a display function layer, wherein the display function layer is stacked between the first conducting layer and the second conducting layer to form a sandwich structure, the surface of the first conducting layer or the second conducting layer, which is deviated from the display function layer, is stacked with the first substrate, and a pattern layer is further arranged between the first conducting layer and a display function layer interface or/and between the second conducting layer and the display function layer interface. The liquid crystal light adjusting film effectively changes the surface state of the contact surface of the first conductive layer and/or the second conductive layer and the display functional layer due to the existence of the pattern layer, and can still display the pattern of the pattern layer at least after the driving voltage is cut off.
Description
Technical Field
The utility model belongs to the technical field of liquid crystal membrane spraying equipment of adjusting luminance, especially, relate to a liquid crystal membrane of adjusting luminance with static pattern.
Background
The liquid crystal dimming film is a novel electronic light control product, the electronic control liquid crystal dimming film device is characterized in that liquid crystal is injected between two transparent conductive films or a liquid crystal and polymer mixed material is injected between the two transparent conductive films, liquid crystal molecules in the two transparent conductive films are arranged in a disordered mode under the condition that voltage is not applied to the transparent conductive films, the electronic control liquid crystal dimming film is in an opaque state (OFF state), and when the voltage is applied to the transparent conductive films, the electric liquid crystal dimming film is converted into a transparent state (ON state). The liquid crystal dimming film can realize rapid switching from an on state to an off state, and between the off state → the on state under the action of an electric field. The dimming glass attached with the liquid crystal dimming film has a decoration function, and a unique decoration effect is formed by changing the transparency and the opacity of the interior of the glass, so that a simple glass curtain wall is changed into artistic glass. Also has functional effects, such as sunscreen, privacy protection, etc
Conventional liquid crystal-based dimming films include PDLC (polymer dispersed liquid crystal) liquid crystal dimming films, multistable liquid crystal dimming films, and the like. Among them, the multistable liquid crystal light adjusting film has many advantages over a liquid crystal light adjusting film such as PDLC (polymer dispersed liquid crystal). When the applied voltage is removed, the LED has a plurality of stable states from a scattering state to a reflecting state, and different stable states have different transparencies, so that a multi-level dimming effect is achieved.
A multistable liquid crystal dimming film (comprising dimming glass) is characterized in that a mixture of highly twisted cholesteric liquid crystal and a high-molecular optical binder monomer (hereinafter referred to as multistable liquid crystal) is added between two pieces of glass (or plastic films) coated with ITO (indium tin oxide) transparent conductive layers, glass microspheres (SPACER) are added between the ITO glass (or plastic films) to control the distance, and when voltage pulses are applied to the two ITO layers, the liquid crystal is driven by an electric field to change the orientation, so that the optical switching effect is realized. The uniformity of the liquid crystal dimming film depends on the cell spacing of a liquid crystal cell and the surface state of ITO (indium tin oxide), a multistable liquid crystal optical switch with high large-area uniformity is developed successfully at present, and patterns can be displayed by etching ITO patterns and using an electric drive method.
Therefore, the conventional liquid crystal dimming film displays a pattern only when an ITO pattern is etched.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a liquid crystal membrane of adjusting luminance with static pattern aims at solving current liquid crystal membrane of adjusting luminance and only just shows the pattern at the etching ITO pattern, and the technical problem of unable static display pattern.
The utility model discloses a realize like this, a liquid crystal membrane of adjusting luminance with static pattern, including first base member, first conducting layer, second conducting layer and demonstration functional layer, wherein, show that the functional layer range upon range of in form sandwich structure between first conducting layer, the second conducting layer, deviating from of first conducting layer or second conducting layer show the surface of functional layer with the range upon range of setting of first base member first conducting layer with show between the functional layer interface or/and the second conducting layer with show still to be equipped with the pattern layer between the functional layer interface.
As the utility model discloses a preferred technical scheme:
further, the display function layer is a multistable liquid crystal layer.
Further, the pattern layer is a first functional pattern layer for surface state change of the first conductive layer and/or the second conductive layer.
Or/and further, the pattern layer is a second functional pattern layer for changing the surface state change of the display functional layer.
Further, the thickness of the first functional pattern layer or/and the second functional pattern layer is 0-1000 nm.
Further, the first functional pattern layer or/and the second functional pattern layer is a watermark pattern.
Further, the first functional pattern layer or/and the second functional pattern layer is/are a transparent medium pattern layer.
Further, the transparent medium pattern layer is a polyimide pattern film layer.
Further, the display function layer includes a plurality of liquid crystal display regions.
Furthermore, the surface of the first conductive layer, which is far away from the display function layer, is stacked on the first substrate, and the surface of the second conductive layer, which is far away from the display function layer, is also stacked on the second substrate or the protective film layer.
The utility model discloses technical effect for prior art is:
the utility model discloses liquid crystal membrane of adjusting luminance with static pattern adds the pattern layer between the first conducting layer that contains and demonstration functional layer interface or/and second conducting layer and demonstration functional layer interface, and this pattern layer has effectively changed first conducting layer and/or second conducting layer and the surface state who shows the functional layer contact surface, works as at least after cutting off driving voltage, still can show the pattern on pattern layer.
Further, when the display function layer is a multistable liquid crystal layer, the pattern layer can be transparent, and after the driving voltage is cut off, the pattern layer can realize a static display pattern through the influence of the surface state of the first conductive layer and/or the second conductive layer on the orientation of the multistable liquid crystal.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention or the description of the prior art will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a liquid crystal light modulation film according to an embodiment of the present invention;
fig. 2 is another schematic structural diagram of a liquid crystal light modulation film according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a liquid crystal light modulation film according to an embodiment of the present invention;
fig. 4 is a schematic view of another structure of a liquid crystal light modulation film according to an embodiment of the present invention;
description of reference numerals:
in the figure: 1-a first substrate, 2-a first conductive layer, 3-a display functional layer, 4-a second conductive layer, 5-a pattern layer, 51-a first pattern layer, 52-a second pattern layer, 6-a second substrate.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
The utility model provides a liquid crystal light adjusting film. The utility model discloses liquid crystal membrane of adjusting luminance's structure is shown in fig. 1 to fig. 4, and it includes first base member 1, first conducting layer 2, shows functional layer 3 and second conducting layer 4, and shows that functional layer 3 stacks up and forms sandwich structure between first conducting layer 2, second conducting layer 4, and the surface that deviates from and shows functional layer 3 of first conducting layer 2 or second conducting layer 4 overlaps with first base member layer 3 and sets up. That is, the liquid crystal dimming film of the embodiment includes the following structure:
the first structure is as follows: the first substrate 1, the first conductive layer 2, the display functional layer 3, and the second conductive layer 4 are sequentially laminated and bonded in a direction from the first substrate 1 to the second conductive layer 4, as shown in fig. 1.
The second structure is as follows: in the direction from the first substrate 1 to the first conductive layer 2, the first substrate 1, the second conductive layer 4, the display functional layer 3, and the first conductive layer 2 are sequentially laminated and bonded as shown in fig. 2.
The first substrate 1, the first conductive layer 2, the display functional layer 3, the second conductive layer 4, and the like described above constitute a basic structure of the liquid crystal light adjusting film of the present embodiment.
The first substrate 1 included in the liquid crystal light modulation film of this embodiment is used to provide a mechanical effect for the liquid crystal light modulation film of this embodiment, so that other layer structures included in the liquid crystal light modulation film provide a loaded substrate. In the embodiment, the first substrate 1 may be glass, or may be a light-transmitting resin substrate, and parameters such as a type of substrate material, transmittance, thickness, and an area size may be selected according to the application of the liquid crystal light modulation film of the embodiment.
The first conductive layer 2 and the second conductive layer 4 included in the liquid crystal light adjusting film of the present embodiment may be conventional conductive layers included in liquid crystal light adjusting films, such as, but not limited to, ITO conductive layers. In addition, the first conductive layer 2 and the second conductive layer 4 may be printed or etched in a desired pattern.
The display function layer 3 included in the liquid crystal light adjusting film of the present embodiment may be a conventional display function layer included in the liquid crystal light adjusting film, such as a liquid crystal layer, and specifically may be a Polymer Dispersed Liquid Crystal (PDLC) or a multistable liquid crystal layer. In addition, the display function layer 3 may be a monolithic layer structure or may be formed by several liquid crystal cell arrangements. When the display function layer 3 is formed by arranging a plurality of liquid crystal cells, the liquid crystal cells may be regularly arranged according to the need, for example, arranged in a specific pattern, or may be randomly distributed. The liquid crystal cell should be a liquid crystal cell structure included in the liquid crystal light adjusting film.
In addition to the structures of the liquid crystal dimming films of the above embodiments, the liquid crystal dimming film of this embodiment further includes a pattern layer 5, and the pattern layer 5 is disposed between the first conductive layer 2 and the interface of the display functional layer 3 or/and between the second conductive layer 4 and the interface of the display functional layer 3. Therefore, the liquid crystal light adjusting film of the embodiment further includes at least three cases of the pattern layer 5:
first, as shown in fig. 1, the pattern layer 5 includes a first pattern layer 51 and a second pattern layer 52, the first pattern layer 51 is disposed between the first conductive layer 2 and the display function layer 3, and the second pattern layer 52 is disposed between the second conductive layer 4 and the display function layer 3. The first pattern layer 51 and the second pattern layer 52 form a double pattern, and the pattern display of the liquid crystal light modulation film of the embodiment can be realized, so that the application range of the liquid crystal light modulation film of the embodiment is improved, for example, the liquid crystal light modulation film can be used as a billboard with a multi-surface display pattern.
Secondly, as shown in fig. 2, the pattern layer 5 is a second pattern layer 52, and the second pattern layer 52 is disposed between the second conductive layer 4 and the interface of the display function layer 3. The second pattern layer 52 forms a single-sided pattern, and single-sided pattern display of the liquid crystal light adjusting film of the present embodiment can be realized.
Thirdly, as shown in fig. 3, the pattern layer 5 is a first pattern layer 51, and the first pattern layer 51 is disposed between the first conductive layer 2 and the interface of the display function layer 3. The first pattern layer 51 forms a single-sided pattern, and single-sided pattern display of the liquid crystal light adjusting film of the present embodiment can be realized.
No matter which interface is arranged between the pattern layer 5 and the display functional layer 3, the pattern layer 5 effectively changes the surface state of the contact surface of the first conductive layer 2 and/or the second conductive layer 4 and the display functional layer 3, so that the liquid crystal dimming film can play a role of normal display under the action of applied voltage, and the liquid crystal dimming film can still display the pattern of the pattern layer 5 after the driving voltage is cut off or before the voltage is applied.
In the liquid crystal light adjusting film of the embodiment, the pattern layer 5 may be formed on the surface of the first conductive layer 2 and/or the second conductive layer 4, or may be formed on the surface of the display function layer 3. When the pattern layer 5 is formed on the surface of the first conductive layer 2 and/or the second conductive layer 4, the pattern layer 5 is regarded as a first functional pattern layer for surface state change of the first conductive layer 2 and/or the second conductive layer 4; when the pattern layer 5 is formed on the surface of the display functional layer 3, the pattern layer 5 is described as a second functional pattern layer for changing the surface state of the display functional layer 3.
The pattern layer 5 may be a transparent pattern layer, such as a watermark pattern layer, a transparent medium pattern layer, a friction pattern layer formed by changing the surface state of the first conductive layer 2, the second conductive layer 4 and/or the display function layer 3 by means of friction, or a pattern layer formed by bombarding the surface of the first conductive layer 2, the second conductive layer 4 and/or the display function layer 3 with electron beams to change the surface state of these film layers. The pattern layer 5 may be a dielectric pattern layer having a color difference with the layer structure of the display functional layer 3 or the like. In a specific embodiment, when the pattern layer 5 is a transparent dielectric pattern layer, the transparent dielectric pattern layer may be a single, but not only, polyimide pattern film layer.
Specifically, when the pattern layer 5 is a dielectric pattern layer having a color difference with a layer structure such as the display functional layer 3, the pattern layer 5 can be seen by naked eyes, and when the liquid crystal dimming film is not driven by a driving voltage, the liquid crystal dimming film can statically display the pattern of the dielectric pattern layer. When the driving voltage is connected, the dielectric pattern layer region also displays a pattern because the surface state of the dielectric pattern layer region is changed.
The display functional layer 3 included in the liquid crystal light adjusting film of the present embodiment is a multistable liquid crystal layer, in addition to the pattern layer 5 being a dielectric pattern layer having a color difference with the layer structure such as the display functional layer 3. Thus, since the pattern layer 5 has a color difference with the layer structure of the display function layer 3, the pattern layer 5 can display when the driving voltage is applied; when the display functional layer 3 itself can display a pattern after being connected with a driving voltage, the pattern layer 5 can play a synergistic display effect with the pattern contained in the display functional layer 3; when the driving voltage is switched off, the liquid crystal contained in the multistable liquid crystal layer loses the effect of the electric field, but the pattern layer 5 obtains enhanced display because the existence of the pattern layer 5 changes the surface state of the pattern region on the surface of the first conductive layer 2, the second conductive layer 4 and/or the display function layer 3.
In the liquid crystal light adjusting film of the embodiment, when the pattern layer 5 is the watermark pattern layer, the transparent dielectric pattern layer or the friction pattern layer, in this case, the display function layer 3 included in the liquid crystal light adjusting film of the embodiment is a multistable liquid crystal layer. In this way, after the driving voltage is turned off, since the existence of the pattern layer 5 changes the surface state of the pattern region on the surface of the first conductive layer 2, the second conductive layer 4 and/or the display function layer 3, the multistable liquid crystal state of the pattern layer 5 region is different from the state of the non-pattern layer 5 region, so that the pattern layer 5 is displayed, that is, the pattern region and the non-pattern region of the pattern layer 5 form a display difference, so that the pattern of the pattern layer 5 is displayed.
In an embodiment, the thickness of the pattern layer 5 is 0 to 1000 nm. Specifically, when the pattern layer 5 is the above-mentioned rubbing pattern layer, the thickness thereof is 0 nm. When the dielectric pattern layer is used, the thickness of the pattern layer 5 is greater than 0 and less than or equal to 1000 nm. By adjusting the thickness of the pattern layer 5, the surface states of the first conductive layer 2, the second conductive layer 4 and/or the display function layer 3 are sufficiently changed by the pattern layer 5, the surface difference between a display pattern area and a non-pattern area is enhanced, the display difference is enhanced, and the display effect is improved.
In addition to the pattern layer 5, when the display functional layer 3 included in the liquid crystal light adjusting film also includes a pattern, the pattern layer 5 and the pattern of the display functional layer 3 itself may form a combined pattern.
In the liquid crystal light adjusting film of each of the above embodiments, as shown in fig. 4, the surface of the first conductive layer 2 facing away from the display function layer 3 is stacked on the first base 1, and the surface of the second conductive layer 4 facing away from the display function layer 3 is stacked on the second base 6. Through addding second base member 6 for second base member 6 improves the structure steadiness of liquid crystal membrane of adjusting luminance with first base member 1 together, gives the high mechanical properties of liquid crystal membrane of adjusting luminance. Of course, the second substrate 6 can be replaced by a protective film layer for protecting the operational stability of the second conductive layer 4.
In addition, other functional layers such as an antireflection film layer or a diffuse reflection film layer can be further added on the outer surfaces of the first substrate 1 and the second substrate 6, so that the display effect of the liquid crystal dimming film is improved.
Based on above-mentioned each embodiment liquid crystal membrane structure of adjusting luminance, the utility model provides a liquid crystal membrane of adjusting luminance can be as follows specific liquid crystal membrane of adjusting luminance:
in a specific embodiment, the liquid crystal dimming film is the liquid crystal dimming film shown in fig. 1, the first conductive layer 2 and the second conductive layer 4 contained in the liquid crystal dimming film are ITO layers, and the first substrate 1 is glass; the contained display function layer 3 is a multistable liquid crystal layer, wherein the liquid crystal of the multistable liquid crystal layer is a liquid crystal model E7, the thread pitch of cholesteric liquid crystal is adjusted by a chiral agent (R1011), so that the cholesteric liquid crystal reflects green light, and 10% of light-cured epoxy resin monomer; the liquid crystal cell is 14 x 10cm, SPACER 9 microns is arranged in the middle of one piece of ITO glass, the pattern layer 5 comprises a first pattern layer 51 and a second pattern layer 52, and the first pattern layer and the second pattern layer are circular ring patterns (the ring width is 1mm) made of Polyimide (PI) with the silk-screen diameter of 5cm and the thickness of 0.1 mu m.
Display processing and results:
a square wave of 25VDC (10 milliseconds width) enables the liquid crystal dimming film to be converted into a scattering state, and a remarkable printing pattern is displayed;
the 55VDC square wave enables the liquid crystal dimming film to be converted into a reflection state, and an obvious printing pattern is displayed;
the liquid crystal light-adjusting film is converted into other stable states (the driving current density is 0.02 muA/cm) by square waves at 25-55VDC2) Also, a clear printed pattern is shown.
In another embodiment, the liquid crystal light modulation film is the liquid crystal light modulation film shown in fig. 1, the first conductive layer 2 and the second conductive layer 4 are ITO layers, and the first substrate 1 is glass; the contained display functional layer 3 is a multistable liquid crystal layer, wherein the liquid crystal of the multistable liquid crystal layer is a liquid crystal model BTR47200-100, and the thread pitch of cholesteric liquid crystal is adjusted by a chiral agent (R1011) to enable the cholesteric liquid crystal to reflect yellow-green light; 10% of a photocurable epoxy resin monomer; 14 x 10cm of liquid crystal cell; SPACER 9 μm was formed by screen printing a Polyimide (PI) pattern having an area of 3cm × 3cm in a square frame shape (width of side 1mm) and a thickness of 0.05 μm in the middle of one ITO glass sheet.
Display processing and results:
the liquid crystal dimming film is converted into a scattering state by a square wave of 30VDC (10 milliseconds width), and has obvious printing patterns;
the 60VDC square wave enables the liquid crystal dimming film to be converted into a reflection state, and an obvious printing pattern is formed;
the liquid crystal light-adjusting film is converted into other stable states (the driving current density is 0.04 muA/cm) by square waves at 30-60VDC2) Also, a clear printed pattern is shown.
Therefore, the liquid crystal light adjusting film of each of the above embodiments can effectively change the surface state of the contact surface of the first conductive layer 2 and/or the second conductive layer 4 and the display function layer 3 due to the existence of the pattern layer, and can display the pattern of the pattern layer 5 after the driving voltage is turned off. Especially when the display function layer 3 is a multi-stable liquid crystal layer, the pattern layer 5 can be transparent, and after the driving voltage is cut off, the pattern of the pattern layer 5 can permanently display a static pattern, such as a permanent pattern similar to a watermark, which can be used for displaying LOGO or a characteristic pattern of a company, and the like, and the voltage driving is not needed, so that the complex driving circuit is avoided, and the method has important significance in practical application.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The utility model provides a liquid crystal membrane of adjusting luminance with static pattern, includes first base member, first conducting layer, second conducting layer and shows the functional layer, wherein, show the functional layer range upon range of in form sandwich structure between first conducting layer, the second conducting layer, deviating from of first conducting layer or second conducting layer show the surface of functional layer with first base member range upon range of setting, its characterized in that: and a pattern layer is also arranged between the first conductive layer and the display function layer interface or/and between the second conductive layer and the display function layer interface.
2. The liquid crystal dimming film of claim 1, wherein said display function layer is a multistable liquid crystal layer.
3. The liquid crystal light adjusting film according to claim 1 or 2, wherein the pattern layer is a first functional pattern layer for surface state change of the first conductive layer and/or the second conductive layer; or/and
the pattern layer is a second functional pattern layer used for changing the surface state of the display functional layer.
4. The liquid crystal light adjusting film according to claim 3, wherein the thickness of the first functional pattern layer or/and the second functional pattern layer is 0 to 1000 nm.
5. The liquid crystal light adjusting film according to claim 3, wherein the first functional pattern layer and/or the second functional pattern layer is a watermark pattern.
6. The liquid crystal light adjusting film according to claim 3, wherein the first functional pattern layer or/and the second functional pattern layer is a transparent dielectric pattern layer.
7. The liquid crystal dimming film of claim 6, wherein the transparent dielectric pattern layer is a polyimide pattern film layer.
8. The liquid crystal dimming film of any one of claims 1, 2, 4-7, wherein said display function layer comprises a plurality of liquid crystal display regions.
9. The liquid crystal light adjusting film according to any one of claims 1, 2, and 5 to 7, wherein a surface of the first conductive layer facing away from the display function layer is stacked on the first base, and a surface of the second conductive layer facing away from the display function layer is further stacked on a second base or a protective film.
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| CN202120366595.8U CN215117094U (en) | 2021-02-09 | 2021-02-09 | Liquid crystal light adjusting film with static pattern |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115264446A (en) * | 2022-07-15 | 2022-11-01 | 深圳新阳蓝光能源科技股份有限公司 | Street lamp |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115264446A (en) * | 2022-07-15 | 2022-11-01 | 深圳新阳蓝光能源科技股份有限公司 | Street lamp |
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