CN208506437U - A kind of liquid crystal light modulation device - Google Patents
A kind of liquid crystal light modulation device Download PDFInfo
- Publication number
- CN208506437U CN208506437U CN201821243295.5U CN201821243295U CN208506437U CN 208506437 U CN208506437 U CN 208506437U CN 201821243295 U CN201821243295 U CN 201821243295U CN 208506437 U CN208506437 U CN 208506437U
- Authority
- CN
- China
- Prior art keywords
- layer
- liquid crystal
- polarizing
- conductive layer
- optical axis
- 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
Landscapes
- Liquid Crystal (AREA)
Abstract
The utility model relates to photoelectric fields, more particularly to a kind of liquid crystal light modulation device, main includes the first polarizing layer set gradually from top to bottom, the first conductive layer, the first vertically oriented layer, vertically aligned liquid crystal layer, the second vertically oriented layer, the second conductive layer and the second polarizing layer, second polarizing layer is semi-transparent semi-reflecting polarizing layer, and first conductive layer and the second conductive layer connect power supply.The utility model controls liquid crystal by electric field adjusting and cooperates the optical axis direction of polarizing layer to change the polarization direction of light at the transformation of optical path delay amount with vertically oriented liquid crystal technology, reaches control light transmission, reflection and absorbs three kinds of states, photoelectric efficiency is high.
Description
Technical field
The utility model relates to photoelectric field more particularly to a kind of liquid crystal light modulation devices.
Background technique
Liquid crystal electro-optic technology is other than for showing, as intellectual technology is risen, its special photoelectric characteristic of liquid crystal technology
Start largely to apply in non-display field, such as electric welder's helmet with an automatic light meter, automatic light-adjustment curtain etc..But existing liquid crystal tune
Light device there is also dimming capabilities it is poor, photoelectric efficiency is poor the problems such as.
Utility model content
In view of the deficienciess of the prior art, the liquid crystal tune good the purpose of this utility model is to provide a kind of dimming capability
Optical device.
To achieve the above object, the utility model can be achieved by the following technical programs:
A kind of liquid crystal light modulation device, including the first polarizing layer, the first conductive layer, first vertical set gradually from top to bottom
Oriented layer, vertically aligned liquid crystal layer, the second vertically oriented layer, the second conductive layer and the second polarizing layer, second polarizing layer are
Semi-transparent semi-reflecting polarizing layer, first conductive layer and the second conductive layer connect power supply.
Further, the angle of the liquid crystal molecule optical axis of the optical axis and vertically aligned liquid crystal layer of first polarizing layer is
45 °, the angle of the liquid crystal molecule optical axis of the optical axis and vertically aligned liquid crystal layer of second polarizing layer is 45 °, and described first partially
The optical axis included angle of photosphere and the second polarizing layer is 90 °.
Further, first conductive layer and the second conductive layer are transparent glass or transparent plastic sheet.
Further, the transmitance of first conductive layer and the second conductive layer is all larger than 85%.
Further, the described first vertically oriented layer is opposite with the second vertical orientation differently- oriented directivity of layer and their folder
Angle is less than 10 °
Further, the optical path delay amount of the vertically aligned liquid crystal layer is 1/2 λ, and λ is the wavelength of light.
The utility model controls liquid crystal into the change of optical path delay amount with vertically oriented liquid crystal technology, by electric field adjusting
It changes, to change the polarization direction of light, cooperates the optical axis direction of polarizing layer, reach control light and penetrate, reflect and absorb three kinds of shapes
State, photoelectric efficiency are high.The utility model is suitable for various light modulation scenes, motor-vehicle glass window, smart home, the intelligence electricity of such as light modulation
Device etc., such as a display screen is superimposed behind the utility model, it is mirror or black when the utility model is opaque
Color background has the effect of combining together with display screen component；It is pellucidity, the utility model when utility model works
The display picture of subsequent display screen can be penetrated clearly.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Liquid crystal deflection state diagram when Fig. 2 is no power；
Liquid crystal deflection state diagram when Fig. 3 is switched on；
Fig. 4 is the angle figure of the first polarizing layer and the second polarizing layer and liquid crystal molecule optical axis；
Fig. 5 is reflectivity transmittance curve figure；
In figure: 1, the first polarizing layer；2, the first conductive layer；3, the first vertically oriented layer；4, vertically aligned liquid crystal layer；41,
Liquid crystal molecule；5, the second vertically oriented layer；6, the second conductive layer；7, the second polarizing layer.
Specific embodiment
The utility model is further described below in conjunction with attached drawing and specific embodiment:
As shown in Figure 1, liquid crystal light modulation device described in the utility model, including the first polarisation set gradually from top to bottom
The vertically oriented layer 3 of the 1, first conductive layer of layer 2, first, vertically aligned liquid crystal layer 4, second vertically oriented layer 5,6 and of the second conductive layer
Second polarizing layer 7, the second polarizing layer 7 are semi-transparent semi-reflecting polarizing layer, and the first conductive layer 2 and the second conductive layer 6 connect power supply.Pass through
It gives the first conductive layer 2 and the second conductive layer 6 input power, forms electric field, control electric field level changes vertically aligned liquid crystal layer 4
41 tilt angle of liquid crystal molecule, controls the transmitance of light.
The angle of 41 optical axis of liquid crystal molecule of the optical axis and vertically aligned liquid crystal layer 4 of first polarizing layer 1 is 45 °, and second partially
The angle of 41 optical axis of liquid crystal molecule of the optical axis and vertically aligned liquid crystal layer 4 of photosphere 7 is 45 °, the first polarizing layer 1 and the second polarisation
The optical axis included angle of layer 7 is 90 °.First conductive layer 2 and the second conductive layer 6 are transparent glass or transparent plastic sheet, and first
The transmitance of conductive layer 2 and the second conductive layer 6 is all larger than 85%.The orientation side of first vertically oriented layer and the second vertically oriented layer
To opposite and their angle less than 10 °.The optical path delay amount of vertically aligned liquid crystal layer 4 is 1/2 λ, and λ is the wavelength of light, is reached
To best optical efficiency.
Vertically aligned liquid crystal layer 4 is the rod shaped liquid crystal of dielectric negativity, when 6 no power of the first conductive layer 2 and the second conductive layer
When, as shown in Fig. 2, the first conductive layer 2 and 6 interlayer of the second conductive layer are zero electric field, the liquid crystal molecule 41 of vertically aligned liquid crystal layer 4
It does not overturn, only vertical with oriented layer by oriented layer anchoring influence molecular long axis direction, 41 long axis direction of liquid crystal molecule is without refraction
Rate, light can be through vertically aligned liquid crystal layer 4 and light direction does not change.
90 ° of optical axis direction angle of first polarizing layer 1 and the second polarizing layer 7, when natural light is incident on the first polarizing layer 1,
The polarised light in direction only consistent with 1 optical axis direction of the first polarizing layer penetrates, when zero electric field, the light of vertically aligned liquid crystal layer 4
Shaft vertically aligned layer, vertically aligned liquid crystal layer 4 is without refractive index, and polarised light penetrates and do not change direction at this time, passes through vertical orientation
90 ° of optical axis included angle of incident light polarization direction and the second polarizing layer 7 after liquid crystal layer 4, at this moment the second polarizing layer 7 by part light into
Row absorbs, reflects part light.At this time from the first polarizing layer 1, liquid crystal light modulation device is in shading status, and second
The subsequent object of polarizing layer 7 is blocked.
When the first conductive layer 2 and the second conductive layer 6 are powered, electricity is formd between the first conductive layer 2 and the second conductive layer 6
, as shown in figure 3, electric field strength reaches 41 optical axis of liquid crystal molecule of vertically aligned liquid crystal layer 4 and direction of an electric field angle is 90 °
(i.e. perpendicular to electric field), the optical path delay amount of vertically aligned liquid crystal layer 4 reaches 1/2 λ at this time.When natural light is incident on the first polarisation
The polarised light of layer 1, direction only consistent with 1 optical axis direction of the first polarizing layer penetrates, and light deflects in 1/2 λ layers of optical path delay amount
Direction generates deflection.As shown in figure 4, this deflection angle is according to Jones matrix principle, 1 optical axis of the first polarizing layer and vertically oriented liquid
41 optical axis included angle of crystal layer 4 when optical axis vertical electric field (under electric field driven) middle layer liquid crystal molecule is θ, and polarised light passes through liquid crystal layer
After when optical axis vertical electric field (under electric field driven), light polarization direction and 4 optical axis included angle of vertically aligned liquid crystal layer are θ ', if θ
=-45 °, then θ '=45 °, light passes through 90 ° of 4 post deflection of vertically aligned liquid crystal layer, at this moment light polarization direction and the second polarisation
The optical axis of layer 7 is parallel, and light is penetrated from the second polarizing layer 7.Entire liquid crystal light modulation device is in light transmission state at this time.If incident light
For polarised light, and when optical axis direction is consistent with the polarizing axis of the first polarizing layer 1 or the second polarizing layer 7, the polarised light at this time
Transmitance is up to 65% or more, is more than existing product.
Illustrate the present embodiment in order to clearer, test data will be enclosed below:
The parameter of liquid crystal light modulation device is as follows:
The test data of liquid crystal light modulation device is as follows:
When incident light is polarised light, and optical axis direction is consistent with the polarizing axis of the first polarizing layer or the second polarizing layer,
The transmitance of the polarised light is up to 65% or more at this time, is more than existing product.
When the degree of polarization of the second polarizing layer is increased to 99% or more, reflection and transmitance are below under different energized states
1%.
For those skilled in the art, it is various corresponding that other can be made according to above technical scheme and design
Change and deformation, and all these change and modification all should belong to the utility model claims protection scope it
It is interior.
Claims (6)
1. a kind of liquid crystal light modulation device, it is characterised in that: including the first polarizing layer, first conductive set gradually from top to bottom
Layer, the first vertically oriented layer, vertically aligned liquid crystal layer, the second vertically oriented layer, the second conductive layer and the second polarizing layer, described the
Two polarizing layers are semi-transparent semi-reflecting polarizing layer, and first conductive layer and the second conductive layer connect power supply.
2. liquid crystal light modulation device according to claim 1, it is characterised in that: the optical axis of first polarizing layer takes with vertical
Angle to the liquid crystal molecule optical axis of liquid crystal layer is 45 °, the optical axis of second polarizing layer and the liquid crystal of vertically aligned liquid crystal layer
The angle of molecule optical axis is 45 °, and the optical axis included angle of first polarizing layer and the second polarizing layer is 90 °.
3. liquid crystal light modulation device according to claim 1 or 2, it is characterised in that: first conductive layer and the second conduction
Layer is transparent glass or transparent plastic sheet.
4. liquid crystal light modulation device according to claim 3, it is characterised in that: first conductive layer and the second conductive layer
Transmitance is all larger than 85%.
5. liquid crystal light modulation device according to claim 4, it is characterised in that: the described first vertically oriented layer is vertical with second
The differently- oriented directivity of oriented layer is on the contrary and their angle is less than 10 °.
6. liquid crystal light modulation device according to claim 5, it is characterised in that: the optical path delay of the vertically aligned liquid crystal layer
Amount is 1/2 λ, and λ is the wavelength of light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821243295.5U CN208506437U (en) | 2018-08-01 | 2018-08-01 | A kind of liquid crystal light modulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821243295.5U CN208506437U (en) | 2018-08-01 | 2018-08-01 | A kind of liquid crystal light modulation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208506437U true CN208506437U (en) | 2019-02-15 |
Family
ID=65300141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821243295.5U Active CN208506437U (en) | 2018-08-01 | 2018-08-01 | A kind of liquid crystal light modulation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208506437U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111290158A (en) * | 2020-03-30 | 2020-06-16 | 京东方科技集团股份有限公司 | Display substrate, display panel and display device |
| CN111746238A (en) * | 2020-07-08 | 2020-10-09 | 深圳秋田微电子股份有限公司 | Automatic dimming sun shield with toilet mirror function |
-
2018
- 2018-08-01 CN CN201821243295.5U patent/CN208506437U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111290158A (en) * | 2020-03-30 | 2020-06-16 | 京东方科技集团股份有限公司 | Display substrate, display panel and display device |
| CN111746238A (en) * | 2020-07-08 | 2020-10-09 | 深圳秋田微电子股份有限公司 | Automatic dimming sun shield with toilet mirror function |
| CN111746238B (en) * | 2020-07-08 | 2022-04-01 | 深圳秋田微电子股份有限公司 | Automatic dimming sun shield with toilet mirror function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100390631C (en) | Liquid crystal display unit | |
| CN104965371B (en) | Display panel and its manufacture method, driving method, display device | |
| CN103293744B (en) | A kind of display device | |
| CN101976002B (en) | Blue phase liquid crystal display panel and liquid crystal display device | |
| CN204557017U (en) | A kind of display device and display terminal | |
| US9835901B2 (en) | Reflective type display device | |
| CN102890362B (en) | Display device | |
| CN205176436U (en) | Liquid crystal display module | |
| CN205015868U (en) | Touch display | |
| CN205263429U (en) | Visual peep -proof liquid crystal display module under sunshine | |
| CN208506437U (en) | A kind of liquid crystal light modulation device | |
| CN206515585U (en) | Reflected displaying device | |
| CN202600306U (en) | Blue phase liquid crystal display panel and liquid crystal display device | |
| CN102830540A (en) | Blue phase liquid crystal panel and liquid crystal display applying same | |
| US20170307914A1 (en) | Liquid crystal display device being switchable between transmission mode and reflection mode and display module thereof | |
| CN105259708B (en) | Transparent display | |
| KR102712918B1 (en) | Switchable window elements | |
| CN101556399A (en) | Composite polarizing sheet and liquid crystal display comprising the same | |
| CN104155776A (en) | Electronic window and control method thereof | |
| CN102944958A (en) | Semi-transmissive and semi-reflective display device | |
| CN210488182U (en) | Intelligent glass and display device | |
| CN214335416U (en) | Liquid crystal light modulation device | |
| KR100752143B1 (en) | reflection type liquid crystal display device with a cholesteric liquid crystal color filter | |
| CN101697047A (en) | Graded polarizing liquid crystal light valve and manufacturing method thereof | |
| CN202929334U (en) | Blue phase liquid crystal display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |