CN112147808B - Intelligent glass, preparation method and display device - Google Patents
Intelligent glass, preparation method and display device Download PDFInfo
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- CN112147808B CN112147808B CN202011149159.1A CN202011149159A CN112147808B CN 112147808 B CN112147808 B CN 112147808B CN 202011149159 A CN202011149159 A CN 202011149159A CN 112147808 B CN112147808 B CN 112147808B
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- 239000011521 glass Substances 0.000 title claims abstract description 66
- 238000002360 preparation method Methods 0.000 title abstract description 7
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 191
- 239000000758 substrate Substances 0.000 claims abstract description 175
- 238000006243 chemical reaction Methods 0.000 claims abstract description 72
- 230000005540 biological transmission Effects 0.000 claims description 37
- 238000000034 method Methods 0.000 claims description 22
- 239000004986 Cholesteric liquid crystals (ChLC) Substances 0.000 claims description 12
- 239000004984 smart glass Substances 0.000 claims description 12
- 238000007790 scraping Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims 2
- 230000002265 prevention Effects 0.000 abstract description 6
- 208000008918 voyeurism Diseases 0.000 abstract description 6
- 230000008569 process Effects 0.000 description 16
- 230000002457 bidirectional effect Effects 0.000 description 13
- 230000005684 electric field Effects 0.000 description 9
- 229920000642 polymer Polymers 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 210000002858 crystal cell Anatomy 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- UWCWUCKPEYNDNV-LBPRGKRZSA-N 2,6-dimethyl-n-[[(2s)-pyrrolidin-2-yl]methyl]aniline Chemical compound CC1=CC=CC(C)=C1NC[C@H]1NCCC1 UWCWUCKPEYNDNV-LBPRGKRZSA-N 0.000 description 3
- 239000004988 Nematic liquid crystal Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000004528 spin coating Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000005328 architectural glass Substances 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 244000144985 peep Species 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133553—Reflecting elements
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13718—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on a change of the texture state of a cholesteric liquid crystal
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/139—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
- G02F1/1391—Bistable or multi-stable liquid crystal cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Liquid Crystal (AREA)
Abstract
The application provides intelligent glass, a preparation method and a display device, wherein the intelligent glass comprises the following components: a first substrate and a second substrate arranged opposite to the box; a first electrode layer, a liquid crystal orientation layer and light conversion liquid crystal are sequentially arranged in the direction of the first substrate towards the second substrate; a second electrode layer and reflective liquid crystal are sequentially arranged on the second substrate in the direction of the first substrate; when the light conversion liquid crystal deflects, the incident light is converted into circularly polarized light; the reflective liquid crystal reflects the circularly polarized light, so that the problem of peeping prevention is solved.
Description
Technical Field
The application relates to the technical field of display, in particular to intelligent glass, a preparation method and a display device.
Background
At present, most of windows of automobiles or windows of offices are transparent or semitransparent, and the windows can be peeped into the automobiles or the offices from outside the windows through the transparent or semitransparent windows, so that privacy is difficult to protect. Generally, people use sunshade curtains to achieve the purpose of peeping prevention. The shade then affects the appearance of the window and, without personnel, cannot be automatically operated to provide peep protection.
Disclosure of Invention
The application provides intelligent glass, a preparation method and a display device, and aims to solve the problem that the internal environment is peeped.
In order to solve the above problems, the present application discloses an intelligent glass comprising: a first substrate and a second substrate arranged opposite to the box;
a first electrode layer, a liquid crystal orientation layer and light conversion liquid crystal are sequentially arranged in the direction of the first substrate towards the second substrate;
a second electrode layer and reflective liquid crystal are sequentially arranged on the second substrate in the direction of the first substrate;
when the light conversion liquid crystal deflects, the incident light is converted into circularly polarized light;
the reflective liquid crystal reflects the circularly polarized light.
Optionally, when the light conversion liquid crystal is not deflected, the light conversion liquid crystal allows incident light to penetrate the light conversion liquid crystal;
the reflective liquid crystal reflects the circularly polarized light in the incident light.
Optionally, the method further comprises: a control assembly;
the control component is respectively coupled with the first electrode layer and the second electrode layer, and when receiving a control signal, the control component controls the light conversion liquid crystal to deflect according to a preset angle, and the reflective liquid crystal is in a plane state.
Optionally, when the control component does not receive a control signal, the light conversion liquid crystal is changed from a deflected state to an undeflected state, so that the incident light penetrates the light conversion liquid crystal;
the reflective liquid crystal reflects circularly polarized light in the incident light.
Optionally, the light conversion liquid crystal converts linearly polarized light in the incident light into circularly polarized light when the light conversion liquid crystal deflects.
Optionally, the light converting liquid crystal is a negative homeotropic liquid crystal and the reflective liquid crystal is a polymeric bistable cholesteric liquid crystal.
In order to solve the problems, the application also discloses a display device which is characterized by comprising the intelligent glass.
In order to solve the problems, the application also discloses a preparation method of the intelligent glass, which comprises the following steps:
providing a first substrate and a second substrate;
sequentially forming a first electrode layer and a liquid crystal orientation layer on the first substrate to form a first substrate;
sequentially forming a second electrode layer and reflective liquid crystal on the second substrate to form a second substrate;
dropping light ray conversion liquid crystal on the first substrate, and then aligning the first substrate and the second substrate;
when the light conversion liquid crystal deflects, the incident light is converted into circularly polarized light;
the reflective liquid crystal reflects the circularly polarized light.
Optionally, the step of sequentially forming the second electrode layer and the reflective liquid crystal on the second substrate includes:
forming a second electrode layer on the second substrate;
a liquid crystal layer is coated on the second electrode layer by scraping with a scraping rod;
and solidifying the liquid crystal layer by ultraviolet light to form reflective liquid crystal.
Optionally, the light converting liquid crystal is a negative homeotropic liquid crystal and the reflective liquid crystal is a polymeric bistable cholesteric liquid crystal.
Compared with the prior art, the application has the following advantages:
according to the application, two layers of liquid crystals are arranged in the intelligent glass, namely, the light conversion liquid crystals and the reflection liquid crystals are arranged in the intelligent glass, when the light conversion liquid crystals deflect, incident light is converted into circularly polarized light, the reflection liquid crystals reflect the circularly polarized light, so that the incident light cannot penetrate the intelligent glass, and the effect of peeping prevention on the internal environment is realized because the internal light is totally reflected.
Of course, it is not necessary for any of the products embodying the application to achieve all of the advantages set forth above at the same time.
Drawings
FIG. 1 is a schematic view of a smart glass according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of another smart glass according to a second embodiment of the present application;
FIG. 3 is a schematic structural diagram of a smart glass according to a third embodiment of the present application;
FIG. 4 is a schematic structural diagram of a smart glass according to a third embodiment of the present application;
fig. 5 is a flowchart of a method for preparing intelligent glass according to a fourth embodiment of the application.
Detailed Description
In order that the above-recited objects, features and advantages of the present application will become more readily apparent, a more particular description of the application will be rendered by reference to the appended drawings and appended detailed description.
In order that the above-recited objects, features and advantages of the present application will become more readily apparent, a more particular description of the application will be rendered by reference to the appended drawings and appended detailed description.
Example 1
Referring to fig. 1, a schematic structural diagram of an intelligent glass according to an embodiment of the present application is shown, including: a first substrate 1 and a second substrate 2 arranged in a pair of boxes.
A first electrode layer 4, a liquid crystal alignment layer 5, and a light conversion liquid crystal 6 are sequentially provided on the first substrate 1 in a direction toward the second substrate 2.
A second electrode layer 7 and a reflective liquid crystal 8 are sequentially disposed on the second substrate 2 in a direction toward the first substrate 1.
The light conversion liquid crystal 6 converts incident light into circularly polarized light when deflected.
The reflective liquid crystal 8 reflects the circularly polarized light.
The first substrate 1 and the second substrate 2 may be glass substrates or flexible substrates, and the present application is not particularly limited.
The first electrode layer 4 and the second electrode layer 7 may be indium tin oxide ITO.
The liquid crystal alignment layer 5 is generally formed by spin coating and printing a VA polyimide PI solution.
The incident light includes: linearly polarized light and circularly polarized light.
The light-converting liquid crystal 6 is a negative vertically aligned liquid crystal, and the reflective liquid crystal 8 is a polymer bistable cholesteric liquid crystal.
The polymeric bistable cholesteric liquid crystal includes: the nematic liquid crystal composition, the chiral agent and the polymer are combined, and the nematic liquid crystal composition, the chiral agent and the polymer can be mixed according to a preset proportion in specific application to form a polymer bistable cholesteric liquid crystal, for example: the proportion of the nematic liquid crystal composition, the chiral agent and the polymer is as follows: 1:0.5:1, or 2:1:1, or adjusting the proportion according to different application scenes.
In practical application, the control component is respectively coupled with the first electrode layer and the second electrode layer, when the control component does not receive a control signal, the light conversion liquid crystal is not deflected, namely the light conversion liquid crystal is arranged in a vertical state, and the incident light penetrates through the light conversion liquid crystal; the reflective liquid crystal reflects the circularly polarized light in the incident light, namely the intelligent glass presents bidirectional light transmission.
When the control component receives a control signal, the control component controls the light conversion liquid crystal to deflect according to a preset angle, namely the light conversion liquid crystal is arranged from a vertical state to be arranged according to the preset angle, and the reflection liquid crystal is in a plane state, and the light conversion liquid crystal converts incident light into circularly polarized light at the moment; the reflective liquid crystal reflects the circularly polarized light, namely the intelligent glass presents unidirectional light transmission.
The control signal is generally about 5V, and the light conversion liquid crystal is deflected according to a preset angle, namely, the light conversion liquid crystal is changed from 90 degrees to 45 degrees in a vertical state. The reflective liquid crystal does not deflect under the action of the control signal, but presents a planar state, namely the reflective liquid crystal presents a P state, because the reflective liquid crystal is polymer bistable cholesteric liquid crystal, and therefore does not deflect under the action of the control signal.
Under the condition that the control component receives a control signal, the intelligent glass presents unidirectional light transmission, namely a vertical electric field exists between the first electrode layer 4 and the second electrode layer 7, namely the light conversion liquid crystal 6 is inclined according to a preset angle under the action of the vertical electric field, when the first substrate 1 faces the second substrate 2, the light conversion liquid crystal 6 converts incident light into circularly polarized light, the reflective liquid crystal 8 reflects the circularly polarized light, so that the incident light cannot penetrate through the second substrate 2, unidirectional light transmission of the intelligent glass is realized, the internal environment is prevented from being peeped, and the privacy of the internal environment is further protected.
When the intelligent glass presents unidirectional light transmission, incident light cannot penetrate through the second substrate 2 when the first substrate 1 faces the second substrate 2, but the incident light can penetrate when the second substrate 2 faces the first substrate 1, and the incident light penetrates through the following process:
under the condition that the control component receives a control signal, namely, a vertical electric field exists between the first electrode layer 4 and the second electrode layer 7, when the second substrate 2 is oriented to the first substrate 1, incident light is incident, the reflective liquid crystal 8 reflects circularly polarized light in the incident light, only linearly polarized light can pass through the reflective liquid crystal, when the linearly polarized light irradiates the light conversion liquid crystal, the light conversion liquid crystal converts the linearly polarized light in the incident light into circularly polarized light, so that the circularly polarized light penetrates through the first substrate, and the intelligent glass can be seen from the inside to the outside.
In practical application, when the control component receives the control signal, the control component controls the electric field between the first electrode layer and the second electrode layer according to the control signal, so as to control the deflection of the light conversion liquid crystal.
The process of realizing unidirectional light transmission by the intelligent glass is described by taking an application scene of the intelligent glass applied to an office glass window as an example.
The direction of the first substrate in the glazing is defined as indoor and the direction of the second substrate in the glazing is defined as outdoor.
When the first electrode layer and the second electrode layer of the glass window are electrified, namely, when the first electrode layer and the second electrode layer have an electric field, when incident light is incident from indoor and outdoor, the incident light irradiates to the light conversion liquid crystal, the light conversion liquid crystal can convert linear polarized light in the incident light into circular polarized light, when the circular polarized light irradiates to the reflective liquid crystal, the reflective liquid crystal can reflect the circular polarized light, and as the incident light is totally reflected, no light is transmitted, the indoor environment cannot be seen outdoors, and therefore unidirectional light-tightness of the glass window is achieved.
However, in practical application, the outdoor environment can be seen indoors, and the specific implementation process is as follows:
when incident light enters from outside to inside, the reflective liquid crystal reflects circularly polarized light in the incident light, only linearly polarized light can pass through the reflective liquid crystal, and when the linearly polarized light irradiates the light conversion liquid crystal, the light conversion liquid crystal converts the linearly polarized light in the incident light into circularly polarized light, so that the circularly polarized light is transmitted through the first substrate, and an outdoor environment can be seen from inside.
It should be noted that the smart glass may also be applied to other application scenarios, such as: the process of realizing unidirectional transmission for windows, roofs, skylights, architectural glass, etc. of automobiles can refer to the process of office glass windows, and the application is not described in detail.
According to the embodiment, two layers of liquid crystals are arranged in the intelligent glass, namely, the light conversion liquid crystals and the reflection liquid crystals are arranged in the intelligent glass, when the light conversion liquid crystals deflect, incident light is converted into circularly polarized light, the reflection liquid crystals reflect the circularly polarized light, so that the incident light cannot penetrate the intelligent glass, and the effect of peeping prevention on the internal environment is achieved due to the fact that the internal light is totally reflected.
Example two
Referring to fig. 2, a schematic structural diagram of an intelligent glass according to a second embodiment of the present application is shown, including: a first substrate 1 and a second substrate 2 arranged in a pair of boxes.
A first electrode layer 4, a liquid crystal alignment layer 5, and a light conversion liquid crystal 6 are sequentially provided on the first substrate 1 in a direction toward the second substrate 2.
A second electrode layer 7 and a reflective liquid crystal 8 are sequentially disposed on the second substrate 2 in a direction toward the first substrate 1.
When the control component does not receive a control signal between the first electrode layer 4 and the second electrode layer 7, the light conversion liquid crystal is not deflected, so that incident light penetrates the light conversion liquid crystal; the reflective liquid crystal reflects circularly polarized light in the incident light, and the intelligent glass can realize bidirectional light transmission, namely the intelligent glass presents a transparent state, and the bidirectional light transmission process of the intelligent glass is as follows:
when the incident light is incident on the first substrate 1 in the direction of the second substrate 2, since no vertical electric field exists between the first electrode layer 4 and the second electrode layer 7, the light conversion liquid crystal 6 is not deflected, and the light conversion liquid crystal 6 is completely and vertically aligned under the action of the liquid crystal alignment layer, so that the incident light can completely pass through the light conversion liquid crystal 6, that is, both linearly polarized light and circularly polarized light in the incident light can pass through, when the incident light irradiates the reflective liquid crystal 8, the reflective liquid crystal 8 reflects the circularly polarized light in the incident light, so that the linearly polarized light in the incident light is transmitted through the second substrate 2, and the light transmission from the first substrate 1 to the second substrate 2 is realized.
When the incident light is incident on the second substrate 2 in the direction of the first substrate 1, the reflective liquid crystal 8 reflects the circularly polarized light in the incident light, so that the linearly polarized light in the incident light passes through, and since there is no electric field between the first electrode layer 4 and the second electrode layer 7, the light conversion liquid crystal 6 is not deflected, so that the linearly polarized light in the incident light can pass through the first substrate 1, thereby realizing the light transmission from the second substrate 2 to the first substrate 1.
In practical application, the bidirectional light transmission of the intelligent glass can be changed into unidirectional light transmission, and the process of changing the bidirectional light transmission of the intelligent glass into unidirectional light transmission is as follows:
when the control component is powered between the first electrode layer 4 and the second electrode layer 7, the light conversion liquid crystal 6 deflects according to a preset angle, and when the first substrate 1 is oriented to the second substrate 2, the light conversion liquid crystal 6 converts the incident light into circularly polarized light, and the reflective liquid crystal 8 reflects the circularly polarized light, so that the incident light cannot penetrate the second substrate 2, and light from the first substrate to the second substrate cannot penetrate.
Although the light from the first substrate to the second substrate is not transmitted, the light from the second substrate to the first substrate can be transmitted, and the specific process is as follows:
when the second substrate 2 is incident on the first substrate 1, the reflective liquid crystal 8 reflects circularly polarized light in the incident light so that linearly polarized light in the incident light passes through, and the light conversion liquid crystal 6 converts the linearly polarized light into circularly polarized light so that the circularly polarized light passes through the first substrate 1, thereby realizing light transmission from the second substrate 2 to the first substrate 1.
The process of converting the intelligent glass from bidirectional light transmission to unidirectional light transmission is described in detail, but in practical application, the process of converting the intelligent glass from unidirectional light transmission to bidirectional light transmission can be realized, and the specific process is as follows:
the unidirectional light transmission process of the intelligent glass is as follows:
when the control component is powered between the first electrode layer 4 and the second electrode layer 7, the light conversion liquid crystal 6 deflects according to a preset angle, and when the first substrate 1 is oriented to the second substrate 2, the light conversion liquid crystal 6 converts the incident light into circularly polarized light, and the reflective liquid crystal 8 reflects the circularly polarized light, so that the incident light cannot penetrate the second substrate 2, and light from the first substrate to the second substrate cannot penetrate.
Although the light from the first substrate to the second substrate cannot pass through, the light from the second substrate to the first substrate can pass through the following specific processes:
when the second substrate is used for entering incident light towards the first substrate, the reflective liquid crystal reflects circularly polarized light in the incident light so that linearly polarized light in the incident light passes through, and the light conversion liquid crystal converts the linearly polarized light into circularly polarized light so that the circularly polarized light is transmitted through the first substrate, so that light transmission from the second substrate to the first substrate is realized.
On the basis, when the control component is not electrified between the first electrode layer and the second electrode layer, no electric field exists between the first electrode layer and the second electrode layer, at the moment, the light conversion liquid crystal can be changed from a deflection state to a non-deflection state, namely, the light conversion liquid crystal is vertically arranged, at the moment, when light irradiates from the first substrate to the second substrate or irradiates from the second substrate to the first substrate, the light can pass through, and the specific principle of light transmission can be seen through the part of the intelligent glass for realizing bidirectional transmission, and the detailed description is omitted.
According to the embodiment, the control assembly is used for powering up or not powering up between the first electrode layer and the second electrode layer, so that the conversion of the intelligent glass into bidirectional light transmission, unidirectional light transmission, bidirectional light transmission and unidirectional light transmission and the conversion of the intelligent glass into unidirectional light transmission and bidirectional light transmission are realized, and the application scene of the intelligent glass is enlarged.
Example III
Referring to fig. 3, a schematic structural diagram of an intelligent glass according to a third embodiment of the present application is shown, where the intelligent glass may also be manufactured into a dual liquid crystal panel Cell, and specifically includes: a negative vertical alignment liquid crystal VA liquid crystal box and a polymer bistable cholesteric liquid crystal box are mutually overlapped to form the liquid crystal display.
Wherein, negative vertical alignment liquid crystal VA liquid crystal cell includes:
a first upper substrate 301.
A first electrode layer 302 and a liquid crystal alignment layer 303 are sequentially disposed on the first upper substrate 301 in a direction toward the first lower substrate.
A first electrode layer 302, a liquid crystal alignment layer 303, and a light conversion liquid crystal 304 are sequentially disposed on the first lower substrate 305 in a direction toward the first upper substrate 301.
The first upper substrate 301 and the first lower substrate 305 are encapsulated to form a negative vertical alignment liquid crystal VA liquid crystal cell.
Wherein the polymeric bistable cholesteric liquid crystal cell comprises:
a second upper substrate 306.
A second electrode layer 307 is sequentially disposed on the second upper substrate 306 in a direction toward the second lower substrate 309.
A second electrode layer 307 and a reflective liquid crystal 308 are sequentially disposed on the second lower substrate 309 in a direction toward the second upper substrate 306.
The second upper substrate 306 and the second lower substrate 309 are encapsulated to form a polymer bistable cholesteric liquid crystal cell.
When the control component is not powered on between the first electrode layer and the second electrode layer, the intelligent glass can realize bidirectional light transmission, the intelligent glass presents a transparent state, and the bidirectional light transmission process of the intelligent glass is as follows:
when the first upper substrate is used for incidence of incident light in the direction of the second lower substrate, no electric field exists between the first electrode layer and the second electrode layer, so that the light conversion liquid crystal does not deflect, the incident light passes through the light conversion liquid crystal, namely, linearly polarized light and circularly polarized light in the incident light can pass through the light conversion liquid crystal, and when the incident light irradiates the reflective liquid crystal, the reflective liquid crystal reflects the circularly polarized light in the incident light, so that the linearly polarized light in the incident light is transmitted through the second lower substrate, and light transmission from the first upper substrate to the second lower substrate is realized.
When the incident light is incident on the second lower substrate in the direction of the first upper substrate, the reflective liquid crystal reflects circularly polarized light in the incident light, and the linearly polarized light in the incident light passes through the reflective liquid crystal.
The unidirectional light transmission process of the intelligent glass is shown in fig. 4, and the specific process is as follows:
when the control component is powered on between the first electrode layer and the second electrode layer, the light conversion liquid crystal deflects according to a preset angle, and when the first upper substrate is used for entering incident light towards the second substrate, the light conversion liquid crystal converts the incident light into circularly polarized light, and the reflective liquid crystal reflects the circularly polarized light, so that the incident light cannot penetrate through the second lower substrate, and light from the first upper substrate to the second lower substrate cannot penetrate.
Although the light from the first upper substrate to the second lower substrate cannot pass through, the light from the second lower substrate to the first upper substrate can pass through the following specific processes:
when the second lower substrate is used for entering incident light towards the first upper substrate, the reflective liquid crystal reflects circularly polarized light in the incident light to enable linearly polarized light in the incident light to pass through, and the light conversion liquid crystal converts the linearly polarized light into circularly polarized light to enable the circularly polarized light to penetrate through the first upper substrate, so that light transmission from the second lower substrate to the first upper substrate is achieved.
It should be noted that, the process of converting the two-way permeation of the intelligent glass into the one-way permeation of the intelligent glass can be realized, and the process of converting the one-way permeation of the intelligent glass into the two-way permeation can be realized by referring to the processes of the first embodiment and the second embodiment.
According to the embodiment, two layers of liquid crystals are arranged in the intelligent glass, namely, the light conversion liquid crystals and the reflection liquid crystals are arranged in the intelligent glass, when the light conversion liquid crystals deflect, incident light is converted into circularly polarized light, the reflection liquid crystals reflect the circularly polarized light, so that the incident light cannot penetrate the intelligent glass, and the effect of peeping prevention on the internal environment is achieved due to the fact that the internal light is totally reflected.
Example IV
Referring to fig. 5, a flowchart of a method for preparing intelligent glass according to a fourth embodiment of the present application is shown, which specifically includes:
step 501: a first substrate and a second substrate are provided.
The first substrate and the second substrate may be glass substrates or flexible substrates, and the present application is not particularly limited.
Step 502: and sequentially forming a first electrode layer and a liquid crystal orientation layer on the first substrate to form a first substrate.
In practical applications, spin coating and printing may be used to form a liquid crystal alignment layer on the first substrate, thereby forming the first substrate.
Step 503: and forming a second electrode layer and reflective liquid crystal on the second substrate in sequence to form a second substrate.
In practical application, the step of forming the second substrate includes sequentially forming a second electrode layer and reflective liquid crystal on the second substrate, where the step of forming the second substrate includes:
and forming a second electrode layer on the second substrate by spin coating and printing.
And scraping a liquid crystal layer on the second electrode layer by using a scraping rod.
And curing the liquid crystal layer by ultraviolet light to form reflective liquid crystal and a second substrate.
In a specific application, 200W uv light may be used to cure the liquid crystal layer for 10 minutes to form a stable reflective liquid crystal.
Step 504: dropping light conversion liquid crystal on the first substrate, and then aligning the first substrate and the second substrate.
In practical applications, the first substrate and the second substrate may be paired in a conventional ODF manner.
Step 505: when the light conversion liquid crystal deflects, the incident light is converted into circularly polarized light; the reflective liquid crystal reflects the circularly polarized light.
Optionally, the light-converting liquid crystal is a negative homeotropic liquid crystal, and the reflective liquid crystal is a polymer bistable cholesteric liquid crystal.
According to the embodiment, two layers of liquid crystals are arranged in the intelligent glass, namely, the light conversion liquid crystals and the reflection liquid crystals are arranged in the intelligent glass, when the light conversion liquid crystals deflect, incident light is converted into circularly polarized light, the reflection liquid crystals reflect the circularly polarized light, so that the incident light cannot penetrate the intelligent glass, and the effect of peeping prevention on the internal environment is achieved due to the fact that the internal light is totally reflected.
It should be noted that, for simplicity of description, the foregoing method embodiments are all described as a series of acts, but it should be understood by those skilled in the art that the present application is not limited by the order of acts described, as some steps may be performed in other orders or concurrently in accordance with the present application. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred embodiments, and that the acts are not necessarily required for the present application.
Example five
The application also discloses a display device, which comprises the intelligent glass in the first embodiment and the second embodiment.
The display device has all the advantages of the smart glass in the first embodiment and the second embodiment, and will not be described herein.
In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by differences from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.
As will be readily appreciated by those skilled in the art: any combination of the above embodiments is possible, and thus is an embodiment of the present application, but the present specification is not limited by the text.
While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.
The above describes in detail an intelligent glass, a preparation method and a display device provided by the application, and specific examples are applied to illustrate the principle and the implementation of the application, and the above examples are only used for helping to understand the method and the core idea of the application; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.
Claims (9)
1. An intelligent glass, characterized by comprising: a first substrate and a second substrate arranged opposite to the box;
a first electrode layer, a liquid crystal orientation layer and light conversion liquid crystal are sequentially arranged in the direction of the first substrate towards the second substrate;
a second electrode layer and reflective liquid crystal are sequentially arranged on the second substrate in the direction of the first substrate;
when the light conversion liquid crystal deflects, the incident light is converted into circularly polarized light;
the reflective liquid crystal reflects the circularly polarized light;
the smart glass further comprises: a control assembly;
the control component is respectively coupled with the first electrode layer and the second electrode layer, when the control component receives a control signal, the light conversion liquid crystal is controlled to be arranged from a vertical state to be arranged according to a preset angle, the reflective liquid crystal is in a planar state, and the intelligent glass is in unidirectional light transmission;
when the intelligent glass presents unidirectional light transmission, incident light can not penetrate through the second substrate when entering from the first substrate towards the second substrate, and the incident light can penetrate through the second substrate when entering from the second substrate towards the first substrate.
2. The smart glass of claim 1, wherein the light-converting liquid crystal causes incident light to penetrate the light-converting liquid crystal when the light-converting liquid crystal is not deflected;
the reflective liquid crystal reflects the circularly polarized light in the incident light.
3. The smart glass of claim 1, wherein the light converting liquid crystal changes from a deflected state to an undeflected state when the control component does not receive a control signal, causing the incident light to penetrate the light converting liquid crystal;
the reflective liquid crystal reflects circularly polarized light in the incident light.
4. The smart glass of claim 1, wherein the light converting liquid crystal converts linearly polarized light in the incident light into circularly polarized light when the light converting liquid crystal deflects.
5. The smart glass of any of claims 1-4, wherein the light-converting liquid crystal is a negative homeotropic liquid crystal and the reflective liquid crystal is a polymeric bistable cholesteric liquid crystal.
6. A display device comprising the smart glass of any one of claims 1-5.
7. A method of making the intelligent glass according to any one of claims 1-5, comprising:
providing a first substrate and a second substrate;
sequentially forming a first electrode layer and a liquid crystal orientation layer on the first substrate to form a first substrate;
sequentially forming a second electrode layer and reflective liquid crystal on the second substrate to form a second substrate;
dropping light ray conversion liquid crystal on the first substrate, and then aligning the first substrate and the second substrate;
when the light conversion liquid crystal deflects, the incident light is converted into circularly polarized light;
the reflective liquid crystal reflects the circularly polarized light.
8. The method of manufacturing according to claim 7, wherein the step of sequentially forming the second electrode layer and the reflective liquid crystal on the second substrate comprises:
forming a second electrode layer on the second substrate;
a liquid crystal layer is coated on the second electrode layer by scraping with a scraping rod;
and solidifying the liquid crystal layer by ultraviolet light to form reflective liquid crystal.
9. The method of any one of claims 7-8, wherein the light-converting liquid crystal is a negative homeotropic liquid crystal and the reflective liquid crystal is a polymeric bistable cholesteric liquid crystal.
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