CN204374563U - Light modulating device - Google Patents
Light modulating device Download PDFInfo
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- CN204374563U CN204374563U CN201420849573.7U CN201420849573U CN204374563U CN 204374563 U CN204374563 U CN 204374563U CN 201420849573 U CN201420849573 U CN 201420849573U CN 204374563 U CN204374563 U CN 204374563U
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- modulating device
- light modulating
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Abstract
The utility model has about a kind of light modulating device, and it comprises the side that Light modulating device and polarizing layer are arranged at Light modulating device; Light modulating device comprises pair of parallel electrode layer; Perforated membrane is between this is to parallel electrode layers, and perforated membrane has refractive index, and the hole of perforated membrane has single arrangement direction; And birefringence liquid crystal material is filled in the hole of perforated membrane; Wherein the absorption axle of polarizing layer is parallel or vertical with the orientation of the hole of perforated membrane; When not applying electric field, light modulating device can present clear state; When a field is applied, light modulating device can present opaque state.Light modulating device of the present utility model has than general inverting type PDLC light modulating device preferably sharpness.
Description
Technical field
The utility model relates to a kind of light modulating device, refers in particular to a kind ofly to have the inverting type high polymer dispersed liquid crystal light modulating device that light that adjustable passes through is clear state or opaque state.
Background technology
Along with the development of intelligent glass, window, therefore the application of various smooth regulating device or light shifter increases.Conventional wisdom type glass, window adopt the light modulating device of high polymer dispersed liquid crystal (PDLC) to be clear state or opaque state under electric field action according to it, and can divide into the positive facies pattern PDLC light modulating device of clear state or the inverting type PDLC light modulating device of opaque state.Time scale shared by clear state when the applicable cases of the PDLC light modulating device of these two kinds of kenels generally can be depending on use and opaque state, such as: when as projection film, opaque state need be in for a long time with projection imaging, then can adopt positive PDLC light modulating device; And when as when such as window, vehicle window or Foreupward display apparatus for automobile projection film etc. are applied, mainly need be in clear state, more optionally switch to opaque state, make it have electronic type curtain function or increase display comparison degree, then can adopt anti-phase PDLC light modulating device.But, conventional inverter PDLC light modulating device is in order to maintain clear state during power-off, when liquid crystal molecule must be made to be scattered in polymer base material, the mean refractive index of liquid crystal molecule is consistent with high molecular refractive index, and suitable liquid crystal droplet size, shape and surface energy must be had, make the long axis direction of liquid crystal molecule have orientation perpendicular to substrate surface.Therefore, the positive PDLC light modulating device that the production method of conventional inverter PDLC light modulating device can be dispersed randomly in polymer base material compared with liquid crystal droplet is complicated, and it is not applying the degree of orientation under electric field generally not as applying the positive PDLC light modulating device of electric field, causes the translucent effect of the clear state of conventional inverter PDLC light modulating device also more unintelligible relative to positive PDLC light modulating device.
Utility model content
Because the problem of above-mentioned known techniques, the purpose of this utility model is exactly providing a kind of light modulating device possessing the patent requirements such as novelty, progressive and industry applications, to overcoming the difficult point of existing product.
For achieving the above object, the utility model provides a kind of light modulating device, and it comprises: Light modulating device, comprises pair of parallel electrode layer; Perforated membrane is between this is to parallel electrode layers, and perforated membrane has refractive index, and the hole of perforated membrane has single arrangement direction; And birefringence liquid crystal material is filled in the hole of perforated membrane; And polarizing layer is arranged at the side of this Light modulating device.Absorption axle and the orientation of the hole of perforated membrane of polarizing layer are parallel or vertical.
In the light modulating device of an embodiment, the long axis direction of birefringence liquid crystal material has abnormal optical index (extraordinary refractive index, n
e), short-axis direction has ordinary refraction index (ordinary refractive index, n
o).
In the light modulating device of an embodiment, the refractive index of perforated membrane is identical with one of the abnormal optical index or ordinary refraction index of birefringence liquid crystal material.
In the light modulating device of another embodiment, when this parallel electrode layers does not apply electric field to this perforated membrane, this birefringence liquid crystal material is in non-twisting states, and light directly penetrates this perforated membrane and makes the transparent state of this light modulating device; When this parallel electrode layers applies electric field to this perforated membrane, this birefringence liquid crystal material is in twisting states, and light directly cannot penetrate this perforated membrane and make this light modulating device be opaque state.
In the light modulating device of another embodiment, the refractive index of perforated membrane is 1.4 to 1.7.
In the light modulating device of another embodiment, the abnormal optical index of birefringence liquid crystal material and the refractive index difference of ordinary refraction index are 0.2 to 0.25.
In the light modulating device of another embodiment, birefringence liquid crystal material is selected from the group that smectic liquid crystal, cholesterol liquid crystal, rod shaped liquid crystal, dish-like liquid crystal, columnar liquid crystal, high molecule liquid crystal, Twisted Nematic liquid crystal, super-twisted nematic liquid crystal and combination thereof form.
In the light modulating device of another embodiment, the average pore size of the hole of perforated membrane is 0.01 μm to 0.2 μm, and porosity is 30% to 90%.
In the light modulating device of another embodiment, polarizing layer is absorption-type Polarizer, reflection-type Polarizer, dyeing type Polarizer, application type Polarizer, grating type Polarizer or its combination.
Because light modulating device has polarizing layer structure, can filter and absorb the incident light that half absorbs direction of principal axis component, the light passing perforated membrane during clear state is made to maintain single direction transmission, reduce and absorb the refraction of direction of principal axis component incident light in perforated membrane and scattering, light modulating device is made to have than general inverting type PDLC light modulating device preferably sharpness, and adjust it and angle is set also can be used for vehicle glass etc., to reduce the reflective of extraneous nonmetal object simultaneously.In addition, because the tone of the material of perforated membrane and polarizing layer own is different, the perforated membrane of polyolefins is such as adopted to be generally white, polarizing layer is generally taupe, therefore, the reflectivity of light modulating device both sides is different, during as application such as windows, perforated membrane side is arranged at incident side, polarizing layer side more can be made to have certain peep-proof effect.
Accompanying drawing explanation
Fig. 1 is the light modulating device schematic diagram for the utility model one embodiment of the present utility model;
Fig. 2 A, 2B are the light modulating device generation clear state of the utility model one embodiment and the principle schematic of opaque state.
Embodiment
For making there is further understanding to object of the present invention, structure, feature and function thereof, embodiment is hereby coordinated to be described in detail as follows.
More easily understand for making creation characteristic of the present utility model, content and advantage and the effect that can reach thereof, hereby the utility model is coordinated accompanying drawing, and be described in detail as follows with the expression-form of embodiment, and it is wherein used graphic, its purport is only the use of signal and aid illustration book, for the actual proportions after the utility model enforcement and precisely may not configure, therefore should just appended graphic ratio and configuration relation not understand, limit to the interest field of the utility model on reality is implemented, conjunction be first chatted bright.
Hereinafter with reference to correlative type, the embodiment according to the utility model light modulating device is described, for making to be convenient to understand, the similar elements in following embodiment illustrates with identical symbology.
Shown in Fig. 1, the utility model provides a kind of light modulating device 1, and it comprises: Light modulating device 2, comprises pair of parallel electrode layer 21; Perforated membrane 22 is between this is to parallel electrode layers 21, and perforated membrane 22 has refractive index, and the hole 23 of perforated membrane 22 has single arrangement direction; And birefringence liquid crystal material 24 is filled in the hole 23 of perforated membrane 22; And polarizing layer 3 is arranged at the side of Light modulating device 2; Wherein the absorption axle 31 of polarizing layer 3 is parallel or vertical with the orientation of the hole 23 of this perforated membrane 22.
In the light modulating device of an embodiment, the long axis direction of birefringence liquid crystal material has abnormal optical index, and the short-axis direction of birefringence liquid crystal material has ordinary refraction index; And the refractive index of this perforated membrane is identical with one of the abnormal optical index or ordinary refraction index of birefringence liquid crystal material.
Please in the lump referring to Fig. 2 A and Fig. 2 B, it is the light modulating device generation clear state of the utility model one embodiment and the principle schematic of opaque state, in this embodiment, be parallel with the absorption axle 31 of polarizing layer 3 with the orientation of the hole 23 of this perforated membrane 22, and the refractive index of this perforated membrane 22 is all example to be described with the ordinary refraction index of this birefringence liquid crystal material 24 mutually.As shown in Figure 2 A, for light modulating device 1 produces the principle schematic of clear state.After the hole 23 of perforated membrane 22 inserted by birefringence liquid crystal material 24, because hole 23 has single arrangement direction (x-axis direction), therefore after birefringence liquid crystal material 24 inserts hole 23, the major axis of birefringence liquid crystal material 24 also has the orientation identical with orientation.When the refractive index of this selected perforated membrane 22 is identical with the ordinary refraction index of this birefringence liquid crystal material 24, when parallel electrode layers (not being shown on figure) does not apply electric field to perforated membrane 22, birefringence liquid crystal material 24 does not rotate and maintains former direction, incident light L is after polarizing layer 3, the light in x-axis direction is absorbed axle 31 and absorbs and cannot pass through, and only the light Ly of remaining y-axis durection component penetrates.Because of the direction of vibration of light Ly and the short-axis direction (y-axis direction) of birefringence liquid crystal material 24 consistent, therefore the ordinary refraction index of birefringence liquid crystal material 24 can be experienced, and because of the refractive index of perforated membrane 22 identical with the ordinary refraction index of this birefringence liquid crystal material 24, light Ly can't reflect at the interface of perforated membrane 22 with birefringence liquid crystal material 24, and can directly penetrate formation clear state.As shown in Figure 2 B, for light modulating device 1 produces the principle schematic of opaque state.When parallel electrode layers (not being shown on figure) applies electric field to perforated membrane 22, birefringence liquid crystal material 24 can reverse an angle and major axis is deflected to y-axis direction, the light Ly penetrating polarizing layer 3 now can experience the abnormal optical index of birefringence liquid crystal material 24 at y-axis component and the ordinary refraction index of x-axis component simultaneously, and because of the refractive index of perforated membrane 22 different with the abnormal optical index of birefringence liquid crystal material 24, light Ly can reflect at the interface of perforated membrane 22 with birefringence liquid crystal material 24, and directly cannot penetrate thus form opaque state.
In another embodiment, the absorption axle 31 of polarizing layer 3 is vertical with the orientation of the hole 23 of this perforated membrane 22, and the refractive index of this perforated membrane 22 identical with the abnormal optical index of this birefringence liquid crystal material 24 when, when parallel electrode layers does not apply electric field to perforated membrane 22, light modulating device 1 can form clear state, when parallel electrode layers applies electric field to perforated membrane 22, light modulating device 1 can form opaque state; In the principle that light modulating device 1 forms clear state and opaque state and above-described embodiment, the absorption axle 31 of polarizing layer 3 is parallel with the orientation of the hole 23 of this perforated membrane 22, and the refractive index of this perforated membrane 22 identical with the ordinary refraction index of this birefringence liquid crystal material 24 time, the principle that light modulating device 1 forms clear state and opaque state is consistent, repeats no more herein.
In the light modulating device of another embodiment, the refractive index of perforated membrane is 1.4 to 1.7.
In the light modulating device of another embodiment, the abnormal optical index of birefringence liquid crystal material and the refractive index difference of ordinary refraction index are 0.2 to 0.25, to obtain preferably clear state and opaque state difference.
In the light modulating device of another embodiment, birefringence liquid crystal material is selected from the group that smectic liquid crystal, cholesterol liquid crystal, rod shaped liquid crystal, dish-like liquid crystal, columnar liquid crystal, high molecule liquid crystal, Twisted Nematic liquid crystal, super-twisted nematic liquid crystal and combination thereof form.
In the light modulating device of another embodiment, the base material of perforated membrane is selected from the group that polyolefins macromolecule, polyesters macromolecule, polyamide-based macromolecule, Kynoar and combination thereof form.
In the light modulating device of another embodiment, depending on required printing opacity degree, adjustable selects the perforated membrane of different average pore diameters and porosity, and the average pore size of the hole of perforated membrane is 0.01m to 0.2m, and porosity is 30% to 90%.
In the light modulating device of another embodiment, polarizing layer is absorption-type Polarizer, reflection-type Polarizer, dyeing type Polarizer, application type Polarizer, grating type Polarizer or its combination.
Above-described embodiment is only and technological thought of the present utility model and feature is described, its object understands content of the present utility model implementing according to this enabling those skilled in the art, when can not with restriction the scope of the claims of the present utility model, namely the equalization change that the spirit generally disclosed according to the utility model is done or modification, must be encompassed in the scope of the claims of the present utility model.
Claims (10)
1. a light modulating device, is characterized in that this light modulating device comprises:
Light modulating device, this Light modulating device comprises
Pair of parallel electrode layer;
Perforated membrane, this perforated membrane is between this is to parallel electrode layers, and the hole of this perforated membrane has single arrangement direction; And
Birefringence liquid crystal material, this birefringence liquid crystal material is filled in this hole of this perforated membrane; And
Polarizing layer, this polarizing layer is arranged at the side of this Light modulating device,
Wherein the absorption axle of this polarizing layer is parallel or vertical with the orientation of this hole of this perforated membrane.
2. light modulating device as claimed in claim 1, it is characterized in that this perforated membrane has refractive index, this refractive index is 1.4 to 1.7.
3. light modulating device as claimed in claim 1, it is characterized in that the long axis direction of this birefringence liquid crystal material has abnormal optical index, the short-axis direction of this birefringence liquid crystal material has ordinary refraction index.
4. light modulating device as claimed in claim 3, is characterized in that this refractive index of this perforated membrane is identical with one of this abnormal optical index or this ordinary refraction index of this birefringence liquid crystal material.
5. light modulating device as claimed in claim 4, is characterized in that this birefringence liquid crystal material is in non-twisting states, and light directly penetrates this perforated membrane and makes the transparent state of this light modulating device when this parallel electrode layers does not apply electric field to this perforated membrane; When this parallel electrode layers applies electric field to this perforated membrane, this birefringence liquid crystal material is in twisting states, and light directly cannot penetrate this perforated membrane and make this light modulating device be opaque state.
6. light modulating device as claimed in claim 3, is characterized in that the abnormal optical index of this birefringence liquid crystal material and the refractive index difference of ordinary refraction index are 0.2 to 0.25.
7. light modulating device as claimed in claim 1, is characterized in that the group that this birefringence liquid crystal material is selected from smectic liquid crystal, cholesterol liquid crystal, rod shaped liquid crystal, dish-like liquid crystal, columnar liquid crystal, high molecule liquid crystal, Twisted Nematic liquid crystal, super-twisted nematic liquid crystal and combination thereof and forms.
8. light modulating device as claimed in claim 1, is characterized in that the average pore size of this hole of this perforated membrane is 0.01 μm to 0.2 μm.
9. light modulating device as claimed in claim 1, is characterized in that the porosity of this hole of this perforated membrane is 30% to 90%.
10. light modulating device as claimed in claim 1, is characterized in that this polarizing layer is absorption-type Polarizer, reflection-type Polarizer, dyeing type Polarizer, application type Polarizer, grating type Polarizer or its combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420849573.7U CN204374563U (en) | 2014-12-29 | 2014-12-29 | Light modulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420849573.7U CN204374563U (en) | 2014-12-29 | 2014-12-29 | Light modulating device |
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| CN204374563U true CN204374563U (en) | 2015-06-03 |
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| CN201420849573.7U Active CN204374563U (en) | 2014-12-29 | 2014-12-29 | Light modulating device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106200097A (en) * | 2016-08-30 | 2016-12-07 | 张家港康得新光电材料有限公司 | A kind of electric-controlled light-regulating device |
| CN110308581A (en) * | 2018-03-27 | 2019-10-08 | 中强光电股份有限公司 | The manufacturing method of liquid crystal light modulation film, backlight module and liquid crystal light modulation film |
| US10996518B1 (en) | 2019-12-26 | 2021-05-04 | Industrial Technology Research Institute | Light switchable device |
| WO2021115246A1 (en) * | 2019-12-12 | 2021-06-17 | 京东方科技集团股份有限公司 | Dimming glass and glass module |
| US11353766B2 (en) | 2018-08-06 | 2022-06-07 | Zhejiang Jingyi New Material Technology Co. Ltd | ABX3 perovskite particles and their application in reverse mode controlling photo-flux |
| CN116088215A (en) * | 2022-12-28 | 2023-05-09 | 成都瑞波科材料科技有限公司 | Display assembly and display device |
-
2014
- 2014-12-29 CN CN201420849573.7U patent/CN204374563U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106200097A (en) * | 2016-08-30 | 2016-12-07 | 张家港康得新光电材料有限公司 | A kind of electric-controlled light-regulating device |
| CN110308581A (en) * | 2018-03-27 | 2019-10-08 | 中强光电股份有限公司 | The manufacturing method of liquid crystal light modulation film, backlight module and liquid crystal light modulation film |
| CN110308581B (en) * | 2018-03-27 | 2022-01-11 | 中强光电股份有限公司 | Liquid crystal dimming film, backlight module and manufacturing method of liquid crystal dimming film |
| US11353766B2 (en) | 2018-08-06 | 2022-06-07 | Zhejiang Jingyi New Material Technology Co. Ltd | ABX3 perovskite particles and their application in reverse mode controlling photo-flux |
| WO2021115246A1 (en) * | 2019-12-12 | 2021-06-17 | 京东方科技集团股份有限公司 | Dimming glass and glass module |
| US10996518B1 (en) | 2019-12-26 | 2021-05-04 | Industrial Technology Research Institute | Light switchable device |
| CN116088215A (en) * | 2022-12-28 | 2023-05-09 | 成都瑞波科材料科技有限公司 | Display assembly and display device |
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