CN104570492B - A kind of transparent polymer dispersed LCD display device and its manufacture method and application - Google Patents
A kind of transparent polymer dispersed LCD display device and its manufacture method and application Download PDFInfo
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- CN104570492B CN104570492B CN201510032926.3A CN201510032926A CN104570492B CN 104570492 B CN104570492 B CN 104570492B CN 201510032926 A CN201510032926 A CN 201510032926A CN 104570492 B CN104570492 B CN 104570492B
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- substrate
- orientation layer
- lucite
- ito
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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
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
-
- 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
- G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
Abstract
The present invention relates to a kind of transparent polymer dispersed LCD display device and its manufacture method and application.The transparent polymer dispersed LCD display device of the present invention, including first substrate and second substrate, first orientation layer and second orientation layer and the PDLC being clipped between the first substrate and second substrate, formed with the first orientation layer on the first substrate, formed with the second orientation layer on the second substrate, it is characterized in that, the first substrate and second substrate are that ITO of the surface through degradation treatment adulterates lucite, and the first orientation layer and second orientation layer are the polyvinyl alcohol graft copolymerized methyl methacrylate film of simple tension.The transparent polymer dispersed LCD display device of the present invention can avoid peeling off between oriented layer and substrate and oriented layer and PDLC and producing space.
Description
Technical field
The present invention relates to PDLC display device technology field, more particularly to a kind of transparent polymer dispersion liquid
Crystal device and its manufacture method and application.
Background technology
PDLC (Polymer Dispersed Liquid Crystal, PDLC) display device is newest hair
The flat-panel display device for being capable of display information that exhibition is got up.PDLC is to mix low molecular weight liquid crystal and prepolymer, in certain bar
Aggregated reaction under part, form micron-sized liquid crystal droplet and be evenly dispersed in macromolecule network, recycle liquid crystal molecule
Dielectric anisotropy obtains the material with electro-optic response characteristic, in the presence of outfield (such as electric field, thermal field), can present
Two kinds of different optical states of transmission and scattering.Can not be formed with the case of without applied voltage, between PDLC
The electric field of rule, the direction of optic axis of liquid crystal particle is random, and disordered state, its effective refractive index not refractive index with polymer is presented
Matching, incident ray are scattered strongly, and display device is in opaque or translucent.After applying external voltage, the light of liquid crystal particle
Axle is perpendicular to display device surface alignment, i.e., consistent with direction of an electric field.The ordinary refraction index of particulate and the refractive index of polymer
Basic matching, no sharp interface, constitutes substantially homogeneous medium, so incident light will not scatter, display device is in saturating
Bright shape.
By contrast, above-mentioned PDLC display device is that a kind of PDLC of normal mode is shown
Device.The transparent polymer dispersed LCD for the "on" position for showing transparent off-position and light scattering has been developed at present
(Reverse Mode Polymer Dispersed Liquid Crystal, R-PDLC) display device.Because R-PDLC is shown
Device shows transparent off-position, therefore has broad application prospects, can be used for make windowpane, electric paper book and
Transparent display etc..
The electrooptical property of R-PDLC display devices by using with negative dielectric anisotropy nematic liquid crystal (n-type to
Row liquid crystal) or bifrequency addressable (dual frequency addressable) nematic liquid crystal and realize.Show in R-PDLC
N-type nematic liquid crystal tends to the direction arrangement with vertical electric field direction in showing device.Therefore, in the presence of an electrical field, pass through
Translucent will be presented in scatter incident light R-PDLC display devices.On the contrary, in the case of in the absence of electric field, if using taking
To layer so that nematic liquid crystal is vertically aligned, pellucidity will be presented in R-PDLC display devices.
At present in R-PDLC display devices generally use polyimides (PI) layer as oriented layer.By polyimides physics
The limitation of attribute, the PI oriented layers in R-PDLC display devices typically present faint yellow.But because Transparence Display is to initial saturating
Lightness requires high, therefore the process using PI liquid as oriented layer has not adapted to the trend of Display Technique development.And
And due to not having between polymeric matrix and oriented layer or oriented layer and glass substrate in existing R-PDLC display devices
Any is connected chemically, and is only bonded by physics, and with the increase of service life, adhesive force can gradually weaken, so that occurring
The phenomenon peeled off between polymeric matrix and oriented layer or oriented layer and glass substrate, so as to cause to produce space, this can influence
The translucency of R-PDLC display devices.
The content of the invention
In order to solve the above technical problems, the invention provides a kind of R-PDLC display devices and its manufacture method and application.
R-PDLC display devices provided by the present invention, including first substrate and second substrate, first orientation layer and second
Oriented layer and the PDLC being clipped between the first substrate and second substrate, on the first substrate formed with
The first orientation layer, formed with the second orientation layer on the second substrate, wherein, the first substrate and second substrate
Being surface, the ITO through degradation treatment adulterates lucite, and first orientation layer and second orientation the layer liquid crystal is simple tension
Polyvinyl alcohol graft copolymerized methyl methacrylate film.
In the R-PDLC display devices of the present invention, ITO doping lucite of the surface through degradation treatment is to use third
The ethanol dilution of ketone or chloroform carries out what superficial degradation processing obtained to ITO doping lucite.
In the R-PDLC display devices of the present invention, the acetone either acetone or chloroform in the ethanol dilution of chloroform
Concentration of volume percent is 5-10%.
In the R-PDLC display devices of the present invention, the superficial degradation processing carries out 10-30min.
The preparation method of R-PDLC display devices provided by the present invention, comprises the following steps：
First orientation layer is formed on the first substrate；
Second orientation layer is formed on second substrate；
Liquid crystal and acrylic ester monomer are well mixed, form polymer and liquid crystal compound；
By the first substrate and the second substrate to box, then polymer and liquid crystal compound are added in box,
Ultraviolet light solidifies, and forms described R-PDLC display devices；
Wherein, the first substrate and second substrate are that ITO of the surface through degradation treatment adulterates lucite, described first
Oriented layer and the polyvinyl alcohol graft copolymerized methyl methacrylate film that second orientation layer liquid crystal is simple tension.
In the preparation method of the R-PDLC display devices of the present invention, ITO of the surface through degradation treatment adulterates organic glass
Glass is to carry out superficial degradation processing to ITO doping lucite using the ethanol dilution of acetone or chloroform to obtain.
In the preparation method of the R-PDLC display devices of the present invention, acetone in the ethanol dilution of the acetone or chloroform
Or the concentration of volume percent of chloroform is 5-10%.
In the preparation method of the R-PDLC display devices of the present invention, the superficial degradation processing carries out 10-30min.
In the preparation method of the R-PDLC display devices of the present invention, the method for forming oriented layer is as follows：By the unidirectional drawing
The polyvinyl alcohol graft copolymerized methyl methacrylate film stretched is pasted with ITO doping lucite of the surface through degradation treatment
Close, then double roller is rolled, and forms oriented layer.
In the preparation method of the R-PDLC display devices of the present invention, the acrylic ester monomer has no particular limits,
The purpose of the present invention can be realized.
The R-PDLC display devices of the present invention can be used for making windowpane, electric paper book and transparent display.
In the R-PDLC display devices of the present invention, using the polyvinyl alcohol graft copolymerized methyl methacrylate conduct of simple tension
Oriented layer, ITO of the surface through degradation treatment adulterate lucite as substrate.It is polyvinyl alcohol graft copolymerized when carrying out UV-crosslinked
Monomer between monomer in methyl methacrylate and in polyvinyl alcohol graft copolymerized methyl methacrylate is with surface through degraded
Polymerisation occurs between the ITO doping lucite of processing, oriented layer and strippable substrate can be avoided and produce space.And
And the polyvinyl alcohol graft copolymerized methyl methacrylate of simple tension can be such that the polymerization of acrylic ester monomer has to a certain degree
On order and orientation, liquid crystal molecule can be distributed wherein more uniformly and in order.
In the R-PDLC display devices of the present invention, when carrying out UV-crosslinked, the polyvinyl alcohol graft copolymerized methyl of simple tension
Polymerisation occurs between methyl acrylate and acrylic ester monomer so that between oriented layer and PDLC not only
Only it is physics fitting, can avoids peeling off between oriented layer and PDLC and producing space.
In the R-PDLC display devices of the present invention, the polyvinyl alcohol in polyvinyl alcohol graft copolymerized methyl methacrylate oriented layer
It is preferable to the expression effect of white light, colour cast will not occur, and the methyl methacrylate being grafted is that conventional lucite is former
Material, its light transmittance is splendid, does not interfere with the translucent effect of oriented layer, therefore can solve due to caused by PI layer own physical attributes
Yellowing phenomenon.
Brief description of the drawings
Fig. 1 is the R-PDLC display device preparation process figures of the present invention.
Fig. 2 is the schematic diagram that ITO of the surface through degradation treatment adulterates lucite.
Fig. 3 is the schematic diagram of R-PDLC display devices of the invention after ultra-violet curing.
Embodiment
The present invention is intended to provide it is a kind of in order to solve the above technical problems, the invention provides a kind of R-PDLC display devices and
Its manufacture method and application.
R-PDLC display devices provided by the present invention, including first substrate and second substrate, first orientation layer and second
Oriented layer and the PDLC being clipped between the first substrate and second substrate, on the first substrate formed with
The first orientation layer, formed with the second orientation layer on the second substrate, wherein, the first substrate and second substrate
Being surface, the ITO through degradation treatment adulterates lucite, and first orientation layer and second orientation the layer liquid crystal is simple tension
Polyvinyl alcohol graft copolymerized methyl methacrylate film.
In the R-PDLC display devices of the present invention, ITO doping lucite of the surface through degradation treatment is to use third
The ethanol dilution of ketone or chloroform carries out what superficial degradation processing obtained to ITO doping lucite.
In the R-PDLC display devices of the present invention, the acetone either acetone or chloroform in the ethanol dilution of chloroform
Concentration of volume percent is 5-10%.
In the R-PDLC display devices of the present invention, the superficial degradation processing carries out 10-30min.
The preparation method of R-PDLC display devices provided by the present invention, comprises the following steps：
First orientation layer is formed on the first substrate；
Second orientation layer is formed on second substrate；
Liquid crystal and acrylic ester monomer are well mixed, form polymer and liquid crystal compound；
By the first substrate and the second substrate to box, then polymer and liquid crystal compound are added in box,
Ultraviolet light solidifies, and forms described R-PDLC display devices；
Wherein, the first substrate and second substrate are that ITO of the surface through degradation treatment adulterates lucite, described first
Oriented layer and the polyvinyl alcohol graft copolymerized methyl methacrylate film that second orientation layer liquid crystal is simple tension.
In the preparation method of the R-PDLC display devices of the present invention, ITO of the surface through degradation treatment adulterates organic glass
Glass is to carry out superficial degradation processing to ITO doping lucite using the ethanol dilution of acetone or chloroform to obtain.
In the preparation method of the R-PDLC display devices of the present invention, acetone in the ethanol dilution of the acetone or chloroform
Or the concentration of volume percent of chloroform is 5-10%.
In the preparation method of the R-PDLC display devices of the present invention, the superficial degradation processing carries out 10-30min.
In the preparation method of the R-PDLC display devices of the present invention, the method for forming oriented layer is as follows：By the unidirectional drawing
The polyvinyl alcohol graft copolymerized methyl methacrylate film stretched is pasted with ITO doping lucite of the surface through degradation treatment
Close, then double roller is rolled, and forms oriented layer.
In the preparation method of the R-PDLC display devices of the present invention, the acrylic ester monomer has no particular limits,
The purpose of the present invention can be realized.
Describe the R-PDLC display devices of the present invention in detail below in conjunction with accompanying drawing.
In an embodiment of the invention, prepare the present invention R-PDLC display devices the step of it is as shown in Figure 1：
S01：ITO is smeared with the acetone ethanol dilution that acetone percent by volume is 10% and adulterates lucite, is placed
10min, substrate is made；ITO of the surface through degradation treatment adulterates the signal of lucite as shown in Fig. 2 substrate surface is with double
It key or ester group, can chemically react, realize with the ester group in polyvinyl alcohol graft copolymerized methyl methacrylate or double bond
Chemical bonding；
S02：Polyvinyl alcohol graft copolymerized methyl methacrylate monomer extrusion calendaring shaping, is taken using simple tension mode
To the polyvinyl alcohol graft copolymerized methyl methacrylate film of obtained simple tension；
S03：Will be obtained in the polyvinyl alcohol graft copolymerized methyl methacrylate film of obtained simple tension in S02 and S01
Substrate is bonded, and then double roller is rolled, and forms the substrate with oriented layer；
S04：Liquid crystal and acrylic ester monomer are well mixed, form polymer and liquid crystal compound；
S05：By two pieces of substrates with oriented layer to box, then polymer and liquid crystal compound are added in box, purple
Outer photocuring, form R-PDLC display devices；Acquisition it is R-PDLC display devices as shown in figure 3, including the He of first substrate 11
Second substrate 12, first orientation layer 31 and second orientation layer 32 and it is clipped between the first substrate 11 and second substrate 12
PDLC, formed with first orientation layer 31 on first substrate 11, formed with second orientation layer 32 on second substrate 12,
In the case of in the absence of electric field, nematic liquid crystal 21 is vertically aligned, and is chemically bonded between oriented layer and acrylic ester monomer.
In another embodiment of the invention, prepare the present invention R-PDLC display devices the step of it is as follows：
S11：ITO is smeared with the acetone ethanol dilution that acetone percent by volume is 5% and adulterates lucite, is placed
30min, substrate is made；
S12：Polyvinyl alcohol graft copolymerized methyl methacrylate monomer extrusion calendaring shaping, is taken using simple tension mode
To the polyvinyl alcohol graft copolymerized methyl methacrylate film of obtained simple tension；
S13：Will be obtained in the polyvinyl alcohol graft copolymerized methyl methacrylate film of obtained simple tension in S12 and S11
Substrate is bonded, and then double roller is rolled, and forms the substrate with oriented layer；
S14：Liquid crystal and acrylic ester monomer are well mixed, form polymer and liquid crystal compound；
S15：By two pieces of substrates with oriented layer to box, then polymer and liquid crystal compound are added in box, purple
Outer photocuring, form R-PDLC display devices.
In the R-PDLC display devices of the present invention, using the polyvinyl alcohol graft copolymerized methyl methacrylate conduct of simple tension
Oriented layer, ITO of the surface through degradation treatment adulterate lucite as substrate.It is polyvinyl alcohol graft copolymerized when carrying out UV-crosslinked
Monomer between monomer in methyl methacrylate and in polyvinyl alcohol graft copolymerized methyl methacrylate is with surface through degraded
Polymerisation occurs between the ITO doping lucite of processing, oriented layer and strippable substrate can be avoided and produce space.And
And the polyvinyl alcohol graft copolymerized methyl methacrylate of simple tension can be such that the polymerization of acrylic ester monomer has to a certain degree
On order and orientation, liquid crystal molecule can be distributed wherein more uniformly and in order.
In the R-PDLC display devices of the present invention, when carrying out UV-crosslinked, the polyvinyl alcohol graft copolymerized methyl of simple tension
Polymerisation occurs between methyl acrylate and acrylic ester monomer so that between oriented layer and PDLC not only
Only it is physics fitting, can avoids peeling off between oriented layer and PDLC and producing space.
In the R-PDLC display devices of the present invention, the polyvinyl alcohol in polyvinyl alcohol graft copolymerized methyl methacrylate oriented layer
It is preferable to the expression effect of white light, colour cast will not occur, and the methyl methacrylate being grafted is that conventional lucite is former
Material, its light transmittance is splendid, does not interfere with the translucent effect of oriented layer, therefore can solve due to caused by PI layer own physical attributes
Yellowing phenomenon.
Claims (10)
1. a kind of transparent polymer dispersed LCD display device, including first substrate and second substrate, first orientation layer and second
Oriented layer and the PDLC being clipped between the first substrate and second substrate, on the first substrate formed with
The first orientation layer, formed with the second orientation layer on the second substrate, it is characterised in that the first substrate and
Two substrates are that ITO of the surface through degradation treatment adulterates lucite, and the first orientation layer and second orientation layer liquid crystal are unidirectional
The polyvinyl alcohol graft copolymerized methyl methacrylate film of stretching.
2. transparent polymer dispersed LCD display device according to claim 1, it is characterised in that the surface is through degraded
The ITO doping lucite of processing is to carry out surface to ITO doping lucite using the ethanol dilution of acetone or chloroform
What degradation treatment obtained.
3. transparent polymer dispersed LCD display device according to claim 2, it is characterised in that the acetone or chlorine
The concentration of volume percent of acetone or chloroform is 5-10% in imitative ethanol dilution.
4. transparent polymer dispersed LCD display device according to claim 3, it is characterised in that at the superficial degradation
Reason carries out 10-30min.
5. a kind of preparation method of transparent polymer dispersed LCD display device, comprises the following steps：
First orientation layer is formed on the first substrate；
Second orientation layer is formed on second substrate；
Liquid crystal and acrylic ester monomer are well mixed, form polymer and liquid crystal compound；
By the first substrate and the second substrate to box, then polymer and liquid crystal compound are added in box, it is ultraviolet
Photocuring, form described R-PDLC display devices；
Wherein, the first substrate and second substrate are that ITO of the surface through degradation treatment adulterates lucite, the first orientation
Layer and the polyvinyl alcohol graft copolymerized methyl methacrylate film that second orientation layer liquid crystal is simple tension.
6. according to the method for claim 5, it is characterised in that ITO doping lucite of the surface through degradation treatment
It is to carry out superficial degradation processing to ITO doping lucite using the ethanol dilution of acetone or chloroform to obtain.
7. according to the method for claim 6, it is characterised in that in the ethanol dilution of the acetone or chloroform acetone or
The concentration of volume percent of person's chloroform is 5-10%.
8. according to the method for claim 7, it is characterised in that the superficial degradation processing carries out 10-30min.
9. according to the method for claim 5, it is characterised in that the method for forming oriented layer is as follows：By the simple tension
The ITO doping lucite of polyvinyl alcohol graft copolymerized methyl methacrylate film and the surface through degradation treatment be bonded,
Then double roller is rolled, and forms oriented layer.
10. in claim 1-4 any described transparent polymer dispersed LCD display device make windowpane, electric paper book with
And the application in transparent display.
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| CN201510032926.3A CN104570492B (en) | 2012-11-26 | 2012-11-26 | A kind of transparent polymer dispersed LCD display device and its manufacture method and application |
| CN201210487122.9A CN102967962B (en) | 2012-11-26 | 2012-11-26 | Transparent polymer dispersed liquid crystal display device and manufacturing method and application thereof |
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| CN1715968A (en) * | 2004-06-29 | 2006-01-04 | 日东电工株式会社 | Polarizer and method of producing the same, polarizing plate, optical film, and image display |
| CN1769326A (en) * | 2005-06-29 | 2006-05-10 | 徐雪群 | Tin indium oxide transparent conductive glass and its production process |
| CN101299127A (en) * | 2008-06-13 | 2008-11-05 | 哈尔滨工业大学 | Weak signal amplifier using laminar compound liquid-crystal film and manufacture method thereof |
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| US20050260334A1 (en) * | 2004-05-24 | 2005-11-24 | The Hong Kong Univerisity Of Science And Technology | Method of achieving high pretilt angles in a lilquid crystal cell |
| CN102967962B (en) * | 2012-11-26 | 2015-01-14 | 京东方科技集团股份有限公司 | Transparent polymer dispersed liquid crystal display device and manufacturing method and application thereof |
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|---|---|---|---|---|
| CN1715968A (en) * | 2004-06-29 | 2006-01-04 | 日东电工株式会社 | Polarizer and method of producing the same, polarizing plate, optical film, and image display |
| CN1769326A (en) * | 2005-06-29 | 2006-05-10 | 徐雪群 | Tin indium oxide transparent conductive glass and its production process |
| CN101299127A (en) * | 2008-06-13 | 2008-11-05 | 哈尔滨工业大学 | Weak signal amplifier using laminar compound liquid-crystal film and manufacture method thereof |
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