CN117111351B - PDLC dimming film with four-state transition and assembly thereof - Google Patents
PDLC dimming film with four-state transition and assembly thereof Download PDFInfo
- Publication number
- CN117111351B CN117111351B CN202311368790.4A CN202311368790A CN117111351B CN 117111351 B CN117111351 B CN 117111351B CN 202311368790 A CN202311368790 A CN 202311368790A CN 117111351 B CN117111351 B CN 117111351B
- Authority
- CN
- China
- Prior art keywords
- layer
- pdlc
- substrate
- dimming film
- thickness
- 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
- 239000004983 Polymer Dispersed Liquid Crystal Substances 0.000 title claims abstract description 251
- 230000007704 transition Effects 0.000 title claims abstract description 41
- 239000000758 substrate Substances 0.000 claims abstract description 89
- 230000003750 conditioning effect Effects 0.000 claims description 21
- 238000005192 partition Methods 0.000 claims description 18
- 239000004973 liquid crystal related substance Substances 0.000 claims description 16
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 238000005530 etching Methods 0.000 claims description 9
- 238000003851 corona treatment Methods 0.000 claims description 8
- 239000003292 glue Substances 0.000 claims description 7
- 238000006116 polymerization reaction Methods 0.000 claims description 5
- 238000004880 explosion Methods 0.000 abstract description 14
- 230000015556 catabolic process Effects 0.000 abstract description 9
- 239000010410 layer Substances 0.000 description 367
- 230000005684 electric field Effects 0.000 description 13
- 239000000463 material Substances 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
-
- 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
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Mathematical Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Dispersion Chemistry (AREA)
- Geometry (AREA)
- Laminated Bodies (AREA)
Abstract
The invention belongs to the technical field of PDLC dimming films, and particularly relates to a PDLC dimming film with four-state transition and a component thereof, wherein the PDLC dimming film comprises a first substrate layer, a first conductive layer, a first PDLC layer, a second conductive layer and a second substrate layer which are sequentially arranged, the PDLC dimming film further comprises a common conductive layer and a substrate adjusting layer, the substrate adjusting layer is positioned between the common conductive layer and the second PDLC layer, the haze of the first PDLC layer after power failure is more than 90%, the haze of the second PDLC layer after power failure is 70% -90%, and the thickness of the second PDLC layer is smaller than that of the first PDLC layer. The invention can realize four different states on the same PDLC dimming film under the condition of ensuring consistency of different films, and simultaneously effectively reduces the possibility of electric breakdown (or explosion point) phenomenon, and has high adhesion force between layers.
Description
Technical Field
The invention belongs to the technical field of PDLC dimming films, and particularly relates to a PDLC dimming film with four-state transition and a component thereof.
Background
With the expansion of the field of PDLC (Polymer Dispersed Liquid Crystal, i.e., high molecular polymer dispersed liquid crystal) dimming films and the improvement of general familiarity, users have put higher demands on pattern display and customized pattern display of PDLC dimming films.
However, in the current PDLC dimming film structure, one or more PDLC layers with the same parameters are generally disposed, and conductive layers are symmetrically disposed on two sides of each PDLC layer, which can realize the transparent state and the fog state transition of the corresponding single region in the single dimming region under a fixed voltage, and cannot realize the transition of more than two different states on the same PDLC dimming film. For example, CN116449599a discloses a low side view haze electrically controlled dimming film and a method for preparing the same, discloses a double-layer PDLC dimming film, adopts a symmetrical ITO film, but solves the problem of low side view haze, and only has two states of a transparent state and a haze state in a single dimming area under a fixed voltage.
At present, a method for realizing multi-state dimming in the market mainly realizes multi-stage dimming through voltage regulation, but can only actually ensure that the haze is controllable when power is off or saturated, and the haze among different films is very large when the voltage is semitransparent between 5V and 15V, for example, 8V and 12V, mainly because the uniformity of liquid crystal cannot be ensured when the liquid crystal is partially turned due to thickness tolerance, tolerance of resistance value of a conductive layer, tolerance of solidified light intensity and the like. Accordingly, there is a need in the art for a PDLC dimming film that can achieve multiple state transitions and ensure diaphragm uniformity.
It should be noted that this section of the disclosure only provides a background related to the present disclosure, and does not necessarily constitute prior art or known technology.
Disclosure of Invention
The invention aims to overcome the defect that a PDLC dimming film in the prior art can only realize transparent state transition and vaporific state transition and cannot meet the requirement of realizing multiple state transition under the condition of ensuring the consistency of a diaphragm, and provides a PDLC dimming film with four-state transition and a component thereof, wherein the PDLC dimming film can realize four different states on the same PDLC dimming film: transparent state (namely clear and transparent), semitransparent state, fog state and fog state enhancement, wherein the four states are realized under the condition of power failure or saturation voltage, so that different films in the PDLC dimming film have consistency. And the overall fog state under the condition of enhancing the fog state is obviously improved, meanwhile, the possibility of occurrence of electric breakdown (or explosion point) is effectively reduced, and the adhesion force between layers is high.
In order to achieve the above object, the present invention provides a PDLC light modulation film with four-state transition, which comprises a first substrate layer, a first conductive layer, a first PDLC layer, a second conductive layer and a second substrate layer, wherein the first substrate layer, the first conductive layer, the first PDLC layer, the second conductive layer and the second substrate layer are sequentially arranged, the PDLC light modulation film further comprises a common conductive layer and a substrate adjusting layer which are sequentially arranged between the first PDLC layer and the second PDLC layer, the substrate adjusting layer is positioned between the common conductive layer and the second PDLC layer, no conductive layer is arranged between the substrate adjusting layer and the second PDLC layer, the haze of the first PDLC layer after power failure is more than 90%, the haze of the second PDLC layer after power failure is 70% -90%, and the thickness of the second PDLC layer is smaller than the thickness of the first PDLC layer.
In some preferred embodiments of the present invention, the ratio k of the thicknesses of the first PDLC layer and the second PDLC layer is 1.25-5, more preferably 1.5-4.5.
More preferably, the thickness d1 of the first PDLC layer is 12-18 μm and the thickness d2 of the second PDLC layer is 3-12 μm, preferably 4-8 μm.
In some preferred embodiments of the present invention, the thickness d3 of the substrate conditioning layer satisfies: d3 =d1×k-d2, d1, d2 are the thickness of the first PDLC layer and the thickness of the second PDLC layer, respectively.
In some preferred embodiments of the invention, the thickness d3 of the substrate conditioning layer is 6-72 μm, more preferably 12-50 μm.
In some preferred embodiments of the present invention, the first PDLC layer and the second PDLC layer each independently satisfy: it comprises UV glue and liquid crystal, the resistivity of the liquid crystal is more than or equal to 10 multiplied by 10 10 After polymerization of the UV gel, the current Is less than or equal to 10 mu A under the conditions of 25 ℃ and ultraviolet irradiation for 90 seconds.
In some preferred embodiments of the present invention, the surface dyne value of the side of the substrate conditioning layer adjacent to the second PDLC layer is equal to or greater than 41mN/m, and the surface dyne value of the side of the substrate conditioning layer adjacent to the common conductive layer is equal to or greater than 36mN/m.
More preferably, the surface dyne value of the side of the substrate conditioning layer near the second PDLC layer is 50-67mN/m, and the surface dyne value of the side of the substrate conditioning layer near the common conductive layer is 40-46mN/m.
In some preferred embodiments of the invention, the different surface dyne values on both sides of the substrate conditioning layer are obtained by corona treatment with a high frequency alternating voltage of 5300-6700V/m 2 。
In some preferred embodiments of the present invention, the step dimming manner of the PDLC dimming film includes: when the PDLC dimming film needs to be controlled to be in a transparent state, the common conducting layer is electrically connected with the first electrode, and the first conducting layer and the second conducting layer are electrically connected with the second electrode; when the PDLC dimming film needs to be controlled to be in a semitransparent state, the common conducting layer is electrically connected with the first electrode, the first conducting layer is electrically connected with the second electrode, and the second conducting layer is not electrified; when the PDLC dimming film needs to be controlled to be in a fog state, the common conducting layer is electrically connected with the first electrode, the second conducting layer is electrically connected with the second electrode, and the first conducting layer is not electrified; when the PDLC dimming film needs to be controlled to be in an enhanced fog state, the common conducting layer, the first conducting layer and the second conducting layer are not electrified.
In some preferred embodiments of the present invention, at least one etching cutting line is respectively disposed on the first conductive layer and the second conductive layer, the etching cutting line divides the corresponding conductive layer into a plurality of partitions, and an electrode connection is disposed on each partition, so as to perform conductive connection control on each partition to realize separate dimming control of each partition.
The invention also provides an assembly comprising the PDLC dimming film with four-state transition.
The beneficial effects are that:
the inventor of the present invention has found through a great deal of experimental study that, in the structure of the existing double-layer PDLC layer, both sides of each PDLC layer are symmetrically provided with conductive layers to provide electric fields for the PDLC layer to realize state transition, if multiple different states are to be realized on the same PDLC dimming film, the following problems may exist: when the thicknesses of the two PDLC layers are inconsistent, different electric field intensities can be generated under the same voltage, the electric field intensity with thin thickness is large, and the problems of electric breakdown (or explosion point) and the like are easy to generate; however, if the second PDLC layer is thinned to achieve the semitransparent state, a new problem arises: different electric fields are generated in the first PDLC layer and the second PDLC layer, the electric field of the second PDLC layer is higher than that of the first PDLC layer, and the two conductive layers on two sides of the second PDLC layer are relatively close to each other, so that electric breakdown (or explosion point) is easy to generate. Based on this, the inventors further studied and proposed the present invention.
According to the technical scheme, in particular to the technical scheme that the conducting layers on two sides of the second PDLC layer are asymmetrically arranged, the conducting layers are not arranged between the substrate adjusting layer and the second PDLC layer, the first PDLC layer and the second PDLC layer are driven by matching with the common conducting layer, and the haze and the thickness of the first PDLC layer and the second PDLC layer after power failure are controlled, so that four different states on the same PDLC dimming film can be realized: transparent (i.e., clear transparent), translucent, hazy, and enhanced hazy. In the asymmetric arrangement structure of the second PDLC layer, the distance between the common conductive layer and the second conductive layer is increased through the base material adjusting layer, so that the field intensity of the two PDLC layers is close, the phenomenon that electric breakdown (explosion point) is easy to occur due to small distance between the adjacent conductive layers is effectively prevented, and the adhesive force between the layers is high; and two PDLC layers with different haze after power failure are arranged in a matching way, and the haze is larger after the first PDLC layer is powered off so as to form a fog state (at the moment, the second PDLC layer is powered on); in a state formed by overlapping the first PDLC layer and the second PDLC layer at intervals, the probability that light rays penetrate through the two PDLC layers at the same position is greatly reduced, and compared with a fog state formed by the haze after the first PDLC layer is powered off, the fog state has a stronger overlapping fog state effect, so that the fog state is enhanced, and the overall fog state under the condition of enhancing the fog state is obviously improved; the first PDLC layer and the second PDLC layer are electrified simultaneously to form a transparent state; the second PDLC layer is powered off and matched with the first PDLC layer to be powered on, and a semitransparent state is easily formed by matching a low haze state with 70-90% of haze with a second PDLC layer with smaller thickness after power off; thus, four states are formed on the same PDLC dimming film, and the dimming diversity of the PDLC dimming film is increased. The four states of the invention are realized under the condition of power failure or saturation voltage, so that the consistency is realized among different diaphragms in the PDLC dimming film.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a PDLC dimming film of the present invention.
Fig. 2 is a schematic structural diagram of an embodiment of the present invention in which the first conductive layer and the second conductive layer are respectively partitioned.
Description of the reference numerals
1. The first substrate layer, 2, the first conducting layer, 3, the first PDLC layer, 4, the common conducting layer, 5, the substrate adjusting layer, 6, the second PDLC layer, 7, the second conducting layer, 8, the second substrate layer, a, the first subarea, b, the second subarea, c, the third subarea, d, etching cutting lines.
Detailed Description
In the present invention, unless otherwise indicated, terms of orientation such as "upper, lower, left, right" and the like are used generally to refer to the orientation understanding shown in the drawings and in practice, and "inner, outer" refer to the inner, outer of the outline of the components.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
The endpoints and any values of the ranges disclosed herein are not limited to the precise range or value, and are understood to encompass values approaching those ranges or values. For numerical ranges, one or more new numerical ranges may be found between the endpoints of each range, between the endpoint of each range and the individual point value, and between the individual point value, in combination with each other, and are to be considered as specifically disclosed herein. Wherein the terms "optional" and "optionally" mean either comprising or not comprising (or may not be present).
Haze in the present invention refers to haze at normal temperature.
The invention provides a PDLC dimming film with four-state transition, which comprises a first substrate layer, a first conductive layer, a first PDLC layer, a second conductive layer and a second substrate layer which are sequentially arranged, wherein the PDLC dimming film further comprises a common conductive layer and a substrate regulating layer which are sequentially arranged between the first PDLC layer and the second PDLC layer, the substrate regulating layer is positioned between the common conductive layer and the second PDLC layer, no conductive layer is arranged between the substrate regulating layer and the second PDLC layer, the haze of the first PDLC layer after power failure is more than 90 percent, the haze of the second PDLC layer after power failure is 70-90 percent, and the thickness of the second PDLC layer is smaller than the thickness of the first PDLC layer.
In the present invention, it can be understood that the corresponding PDLC layer is in a mist form with shielding function when power is off, and is transparent when power is on.
The haze of the second PDLC layer is set to 70% -90% after the power is cut off, and the haze is reduced integrally after the power is cut off by reducing the thickness of the second PDLC layer to be smaller than that of the first PDLC layer, so that the semitransparent state is realized.
In some preferred embodiments of the present invention, the ratio k of the thicknesses of the first PDLC layer and the second PDLC layer is 1.25-5, more preferably 1.5-4.5. By adopting the preferable scheme of the invention, the thickness distribution of the two PDLC layers is limited to be 1.5-4.5, so that the first PDLC layer cannot be too thick, the second PDLC layer cannot be too thin, firstly, the two PDLC layers with different thicknesses can obtain the most similar electric field strength under the same voltage or similar voltage under the adjustment of the substrate adjusting layer, secondly, the overall haze is improved when the fog state is enhanced by the superposition effect of the two thicknesses, and the reason is probably that the proper refractive index of the second PDLC layer with the proper thinner thickness enables the light transmission direction to be changed, the changing direction is not easy to pass through the first PDLC layer with the larger thickness, and the fog state and the semitransparent state have obvious contrast.
More preferably, the thickness d1 of the first PDLC layer is 12-18 μm on the basis of satisfying the above thickness ratio k. The first PDLC layer is in the preferable thickness range, is more beneficial to realizing excellent fog state, enhanced fog state and transparent state with higher transparency, and simultaneously ensures proper distance between adjacent conductive layers, thereby further effectively reducing the possibility of generating electric breakdown.
On the basis of satisfying the above thickness ratio k, the thickness d2 of the second PDLC layer is preferably 3-12 μm, preferably 4-8 μm. The second PDLC layer is preferably in the thickness range of 4-8 mu m, which is more favorable for realizing excellent semitransparent state, and ensures that the second PDLC layer which is suitable for being thin is uniformly coated to avoid the possible occurrence of local light leakage. The second PDLC layer with too thin thickness is easy to cause uneven coating of the PDLC layer, and the possibility of local light leakage is greatly increased.
In some preferred embodiments of the present invention, the thickness d3 of the substrate conditioning layer satisfies: d3 =d1×k-d2, d1, d2 are the thickness of the first PDLC layer and the thickness of the second PDLC layer, respectively, and k is the ratio of the thicknesses of the first PDLC layer and the second PDLC layer. In the preferred scheme, the thickness of the substrate adjusting layer matched with the thickness of the first PDLC layer, the thickness of the second PDLC layer and the proportion difference between the thickness of the first PDLC layer and the thickness of the second PDLC layer are obtained in a quantitative mode by establishing a relational expression, so that the electric field strength is ensured, the stability of transition of the first PDLC layer and the second PDLC layer in each state is improved, and meanwhile the possibility of electric breakdown is effectively avoided. The problems that the electric field strength is not easy to control, electric breakdown is likely to occur and the like caused by improper selection of the thickness d3 of the substrate adjusting layer are avoided.
On the basis of satisfying d3=d1×k-d2, in some preferred embodiments of the present invention, the thickness d3 of the substrate regulating layer is 6 to 72 μm, more preferably 12 to 50 μm, and 12 to 50 μm may be, for example, 12, 23, 38, 50 μm, or the like. In the preferred scheme, the thickness of the base material adjusting layer between the two PDLC layers is as thin as possible under the condition of meeting the electric field intensity adjusting requirement, and the thickness of 12-50 mu m can enable the two PDLC layers to have better flexibility and not easy to peel.
The thickness of the first substrate layer and the second substrate layer can be selected by a person skilled in the art according to actual requirements, and the thickness of the first substrate layer and the second substrate layer is respectively and independently greater than 100 μm, so that the three-layer substrate formed by the first substrate layer, the second substrate layer and the substrate regulating layer has good deformability, and interlayer peeling is avoided.
The thickness or resistance of the common conductive layer, the first conductive layer, and the second conductive layer can be selected by those skilled in the art according to actual requirements, and the thickness of the common conductive layer, the first conductive layer, and the second conductive layer are each independently 20-50 μm, or the sheet resistance of the common conductive layer, the first conductive layer, and the second conductive layer are each independently 10-250Ω%。
In some preferred embodiments of the present invention, the first PDLC layer and the second PDLC layer each independently satisfy: it comprises UV glue and liquid crystal, the resistivity of the liquid crystal is more than or equal to 10 multiplied by 10 10 Omega cm, preferably ≡20X10 or more 10 After polymerization of the UV gel, the current Is less than or equal to 10 mu A, preferably less than or equal to 8 mu A at 25 ℃ under the irradiation of ultraviolet rays for 90 s. In the preferred scheme, the corresponding PDLC layer adopts liquid crystal with high resistivity and UV glue with low current, so that charged particles of the PDLC layer can be reduced, and the risk of explosion points of the PDLC layer is further reduced.
Further, the method of forming a corresponding PDLC layer of the present invention preferably includes: after mixing the UV gel with the liquid crystal, filtration was performed using a filter ball having a particle size of 1-2 μm, followed by PDLC layer coating. The environment of the coating is a dust free grade better than or equal to thousand. It will be appreciated that the respective PDLC layers are formed by coating a mixture comprising UV glue and liquid crystal between adjacent respective conductive layers. The special environment with high dust-free grade is required for filtering, so that the problem that tiny conductive substances enter between two conductive layers to cause short circuit of the two conductive layers can be avoided.
In the present invention, the materials of the first substrate layer, the first conductive layer, the second substrate layer, the common conductive layer, and the substrate adjusting layer may be materials according to the corresponding prior art, for example, the materials of each conductive layer may be ITO (indium tin oxide), nano silver wire, etc., the materials of each substrate layer may be PET (polyethylene terephthalate), COP (cyclic olefin polymer), PC (polycarbonate), etc., and those skilled in the art may select according to the needs, which are the prior art and are not described herein.
In some preferred embodiments of the present invention, the surface dyne value of the side of the substrate conditioning layer adjacent to the second PDLC layer is equal to or greater than 41mN/m, and the surface dyne value of the side of the substrate conditioning layer adjacent to the common conductive layer is equal to or greater than 36mN/m.
More preferably, the surface dyne value of the side of the substrate conditioning layer near the second PDLC layer is 50-67mN/m, and the surface dyne value of the side of the substrate conditioning layer near the common conductive layer is 40-46mN/m. In the preferred scheme, different dyne values are adopted on two sides of the substrate adjusting layer, a high dyne value is adopted on one side of the substrate adjusting layer, which is close to the second PDLC layer, and a low dyne value is adopted on the contact surface of one side of the substrate adjusting layer, which is close to the common conducting layer, so that the surface energy of the substrate adjusting layer can be improved, the binding force between the surface and the adjacent film layer is enhanced, and especially the adhesion binding force between the substrate adjusting layer and the second PDLC layer is increased, and the risk of stripping between the layers is effectively avoided.
In some preferred embodiments of the invention, the different surface dyne values on both sides of the substrate conditioning layer are obtained by corona treatment with a high frequency alternating voltage of 5300-6700V/m 2 . In the preferred scheme, the high factor value is obtained through corona treatment, and the damage of the substrate regulating layer is reduced by adopting smaller corona treatment voltage while the adhesion and binding force of the substrate regulating layer and the second PDLC layer are increased.
In the present invention, the connection modes of the first conductive layer, the second conductive layer, the common conductive layer and other layers may be performed according to the prior art, for example, the first conductive layer is sputtered on the first substrate layer, the second conductive layer is sputtered on the second substrate layer, and the common conductive layer is sputtered on the substrate adjusting layer.
The invention can realize the four-state transition of the transparent state, the semitransparent state, the fog state and the enhanced fog state of the PDLC dimming film by powering on and off different layers of the PDLC dimming film. In some preferred embodiments of the present invention, the step dimming manner of the PDLC dimming film includes:
when the PDLC dimming film needs to be controlled to be in a transparent state, the common conducting layer is electrically connected with the first electrode, and the first conducting layer and the second conducting layer are electrically connected with the second electrode;
when the PDLC dimming film needs to be controlled to be in a semitransparent state, the common conducting layer is electrically connected with the first electrode, the first conducting layer is electrically connected with the second electrode, and the second conducting layer is not electrified;
when the PDLC dimming film needs to be controlled to be in a fog state, the common conducting layer is electrically connected with the first electrode, the second conducting layer is electrically connected with the second electrode, and the first conducting layer is not electrified;
when the PDLC dimming film needs to be controlled to be in an enhanced fog state, the common conducting layer, the first conducting layer and the second conducting layer are not electrified.
When the common conducting layer and the second conducting layer are electrified, the second PDLC layer becomes transparent, and the common conducting layer can still form an electric field with the second conducting layer though the base material adjusting layer is arranged, so that the base material adjusting layer is also an insulating layer, the liquid crystal of the PDLC layer is turned to be driven by the electric field, the second PDLC layer is suitable for being matched with other layer structures in a thin mode, the required electric field strength can be ensured, and the explosion problem can not occur.
It should be noted that the driving of the PDLC dimming film of the present invention is ac.
In some preferred embodiments of the present invention, at least one etching cutting line is respectively disposed on the first conductive layer and the second conductive layer, the etching cutting line divides the corresponding conductive layer into a plurality of partitions, and an electrode connection is disposed on each partition, so as to perform conductive connection control on each partition to realize separate dimming control of each partition. In the preferred scheme, the whole conducting layer is cut off along the etching cutting line to form a plurality of subareas, and each subarea is matched with other film layer structures by making an electrode for each subarea, so that each subarea is respectively transparent or fog-changed, and the diversified subarea display effect of the PDLC dimming film is realized.
In a specific embodiment, as shown in fig. 2, 2 etching cut-off lines d are respectively disposed on the first conductive layer 2 and the second conductive layer 7, the corresponding conductive layer is divided into a first partition a, a second partition b and a third partition c, and the individual dimming control of each partition can be realized by conducting connection control on each partition.
It can be understood that conventional components such as leads can be arranged in a matching manner in the process of conducting connection control on each partition, so long as separate conducting connection can be realized, and details are not repeated here.
The invention also provides an assembly comprising the PDLC dimming film with four-state transition.
The following detailed description of the embodiments of the invention is exemplary and is merely illustrative of the invention and not to be construed as limiting the invention. In the following examples, the material of each conductive layer is ITO, and the material of each substrate layer is PET.
Example 1
A PDLC dimming film with four-state transition, as shown in fig. 1, has the structure: the first substrate layer 1, the first conductive layer 2, the first PDLC layer 3, the second PDLC layer 6, the second conductive layer 7 and the second substrate layer 8 which are sequentially arranged, the common conductive layer 4 and the substrate adjusting layer 5 which are sequentially arranged between the first PDLC layer 3 and the second PDLC layer 6, the substrate adjusting layer 5 is arranged between the common conductive layer 4 and the second PDLC layer 6, no conductive layer is arranged between the substrate adjusting layer 5 and the second PDLC layer 6, the haze of the first PDLC layer 3 after power failure is 96%, and the haze of the second PDLC layer 6 after power failure is 75%.
The ratio k of the thicknesses of the first PDLC layer 3 and the second PDLC layer 6 is 3, the thickness d1 of the first PDLC layer 3 is 15 μm, the thickness d2 of the second PDLC layer 6 is 5 μm, and the thickness d3 of the substrate adjusting layer 5 satisfies: d3 =d1×k-d2=40 μm. The thickness of the first substrate layer 1 and the second substrate layer 8 is 125 μm, and the common conductive layer 4 and the second substrate layerThe sheet resistances of the conductive layer 2 and the second conductive layer 7 are 140 Ω +_。
The first PDLC layer 3 and the second PDLC layer 6 each satisfy: it comprises UV glue and liquid crystal, the resistivity of the liquid crystal is 80×10 10 Omega cm, current is=3μa at 25 ℃ under ultraviolet irradiation for 90s after polymerization of UV gel.
Different surface dyne values on both sides of the substrate conditioning layer 5 are obtained by corona treatment. The substrate regulating layer 5 had a surface dyne value of 60mN/m on the side close to the second PDLC layer 6 (6500V/m for the high-frequency AC voltage of the corona treatment employed) 2 ) The substrate regulating layer 5 has a surface dyne value of 42mN/m on the side close to the common conductive layer 4 (corresponding to a high-frequency AC voltage of 5400V/m in the corona treatment employed) 2 ）。
The PDLC dimming film can be tuned to four states:
the common conducting layer 4 is electrically connected with the first electrode, the first conducting layer 2 and the second conducting layer 7 are electrically connected with the second electrode, and the PDLC dimming film is in a transparent state;
the common conducting layer 4 is electrically connected with the first electrode, the first conducting layer 2 is electrically connected with the second electrode, the second conducting layer 7 is not electrified, and the PDLC dimming film is in a semitransparent state;
the common conducting layer 4 is electrically connected with the first electrode, the second conducting layer 7 is electrically connected with the second electrode, the first conducting layer 2 is not electrified, and the PDLC dimming film is in a fog state;
the common conductive layer 4, the first conductive layer 2 and the second conductive layer 7 are not electrified, and the PDLC dimming film is in an enhanced fog state.
Example 2
With reference to the structure of example 1, the difference is that the thickness d2 of the second PDLC layer is adjusted to 3 μm so that the ratio k of the thicknesses of the first PDLC layer and the second PDLC layer is 5. The thickness d3 of the substrate conditioning layer satisfies: d3 =d1×k-d2=72 μm.
Accordingly, this embodiment enables a four state transition of a transparent state, a translucent state, a fog state, and an enhanced fog state, wherein the translucent state is more transparent (but still in a translucent state) than embodiment 1.
Example 3
With reference to the structure of example 1, the difference was that the thickness d2 of the second PDLC layer was adjusted to 12 μm so that the ratio k of the thicknesses of the first PDLC layer and the second PDLC layer was 1.25. The thickness d3 of the substrate conditioning layer satisfies: d3 =d1×k-d2=6.75 μm.
Accordingly, the present embodiment can perform four-state transition of a transparent state, a semitransparent state, a foggy state, and an enhanced foggy state, wherein the semitransparent state is more foggy than embodiment 1, and the four states are not significantly different from those of embodiment 1.
Example 4
The structure of example 1 was followed, except that the thickness d3 of the base material adjustment layer was adjusted to 50 μm, which did not satisfy: d3 =d1×k-d.
Correspondingly, the embodiment can perform four-state transition of a transparent state, a semitransparent state, a fog state and an enhanced fog state. In this example, the electric field intensity of the second PDLC layer was small, and the haze after the energization of the second PDLC layer was high in the transparent state, resulting in a relatively inferior sharpness effect in the transparent state to that in example 1.
Example 5
The structure of example 1 was modified so that the surface of the substrate conditioning layer on the side closer to the second PDLC layer had the same value as the surface of the substrate conditioning layer on the side closer to the common conductive layer.
Correspondingly, the embodiment can perform four-state transition of a transparent state, a semitransparent state, a fog state and an enhanced fog state.
Example 6
The structure of example 1 was followed, except that the surface dyne value of the substrate conditioning layer on the side close to the second PDLC layer was adjusted to 45mN/m.
Correspondingly, the embodiment can perform four-state transition of a transparent state, a semitransparent state, a fog state and an enhanced fog state.
Example 7
With reference to the structure of example 1, the process was carried out withoutThe same is true that the first PDLC layer 3 and the second PDLC layer 6 each satisfy: it comprises UV glue and liquid crystal, the resistivity of the liquid crystal is 10×10 10 Omega cm, current is=10μa at 25 ℃ under ultraviolet irradiation for 90s after polymerization of UV gel.
Comparative example 1
The structure of example 1 was followed, except that the haze after power-off of the second PDLC layer was adjusted to be the same as the haze after power-off of the first PDLC.
Accordingly, in this comparative example, since the haze of the two PDLC layers after power failure is the same, the three-state transition of the transparent state, the haze and the enhanced haze can be performed only, the semitransparent state cannot be realized, and the haze difference between the haze and the enhanced haze is small and cannot be distinguished.
Comparative example 2
The procedure of example 1 was followed, except that the haze after power failure of the first PDLC layer was adjusted to be the same as the haze after power failure of the second PDLC.
Accordingly, in this comparative example, the haze of the two PDLC layers after power failure is the same, and only the tri-state transition of the transparent state, the semitransparent state, and the enhanced haze can be performed, and the haze is the same as the semitransparent state and cannot be distinguished.
Comparative example 3
The structure of example 1 was followed, except that a conventional symmetrical conductive layer structure was used, and a conductive layer (the thickness of which was the same as that of the second conductive layer) was further provided between the base material adjustment layer and the second PDLC layer, and the thickness of the second PDLC layer and the thickness of the first PDLC layer were 5 μm and 15 μm, respectively (same as in example 1).
Correspondingly, the comparative example can perform four-state transition of a transparent state, a semitransparent state, a fog state and an enhanced fog state, but the explosion point probability is extremely high.
Test case
The PDLC dimming films of the above examples and comparative examples were batch-produced, the ratio of occurrence of burst spots in the batch and the detachment of the film layer adhesion were counted, and haze data in four states were tested, and the results are shown in table 1.
The test method of the explosion point comprises the following steps: and electrifying the first conductive layer and the common conductive layer in sequence, electrifying the common conductive layer and the second conductive layer, and sequentially enabling the first PDLC layer and the second PDLC layer to become transparent. The method for making the corresponding PDLC layer transparent specifically comprises the following steps: the on-off cycle of 10s power on and 10s power off is carried out for 10 times under the condition of 110V high-voltage power on, and 110V is continuously electrified for 10min; and observing whether explosion points appear on the corresponding PDLC layer.
The method for testing the detachment of the film adhesive force comprises the following steps: the PDLC dimming film was cut into 25mm x 300mm strips and peel force test was performed on the first and second PDLC layers, respectively, using a speed of 300mm/min on a peel force tester.
Haze test method: and placing the PDLC films in 4 states respectively at a testing port of a haze meter according to the requirements of a testing instrument, and testing the haze of the PDLC films.
TABLE 1
As can be seen from the above results, compared with the comparative example, the embodiment of the present invention can realize four different states on the same PDLC dimming film under the condition of ensuring the consistency of the film sheets: transparent state (namely clear and transparent), semitransparent state, fog state, enhanced fog state, and the overall fog state under the condition of enhanced fog state is obviously improved, meanwhile, the possibility of explosion point (or electric breakdown) phenomenon is effectively reduced, and the adhesive force between layers is high. While comparative examples 1-2 failed to achieve the four-state transition, comparative example 3 had the problem of significantly higher burst point although it achieved four-state transition.
Further, according to the embodiment 1 and the embodiments 2 to 4 of the present invention, by adopting the preferable film thickness scheme of the present invention, the four-state conversion with obvious distinction is more facilitated while the explosion point is effectively reduced and the adhesion of the layer is improved.
Further, according to the embodiment 1 and the embodiments 5 to 6 of the present invention, the solution of the preferred surface dyne film layer of the present invention is adopted, so that the adhesion of the layer is further improved while the four-state transition with obvious distinction is ensured, and the possibility of explosion point is effectively reduced.
Further, according to the embodiments 1 and 7 of the present invention, it can be seen that, by adopting the solution of the PDLC layer with the preferred composition of the present invention, the adhesion of the layer is further improved while the four-state transition with obvious distinction is ensured, and the possibility of explosion point is further reduced.
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, a number of simple variants of the technical solution of the invention are possible, including combinations of the individual technical features in any other suitable way, which simple variants and combinations should likewise be regarded as being disclosed by the invention, all falling within the scope of protection of the invention.
Claims (10)
1. The PDLC dimming film with the four-state transition comprises a first substrate layer, a first conductive layer, a first PDLC layer, a second conductive layer and a second substrate layer which are sequentially arranged, and is characterized by further comprising a common conductive layer and a substrate adjusting layer which are sequentially arranged between the first PDLC layer and the second PDLC layer, wherein the substrate adjusting layer is arranged between the common conductive layer and the second PDLC layer, no conductive layer is arranged between the substrate adjusting layer and the second PDLC layer, the haze of the first PDLC layer after power failure is more than 90 percent, the haze of the second PDLC layer after power failure is 70-90 percent, the thickness of the second PDLC layer is smaller than the thickness of the first PDLC layer, and the thickness ratio k of the first PDLC layer and the second PDLC layer is 1.25-5; the thickness d3 of the substrate regulating layer satisfies: d3 =d1×k-d2, d1, d2 are the thickness of the first PDLC layer and the thickness of the second PDLC layer, respectively.
2. The PDLC dimming film with four-state transition of claim 1, wherein thickness d1 of said first PDLC layer is 12-18 μm and thickness d2 of said second PDLC layer is 3-12 μm.
3. The PDLC dimming film with four-state transition of claim 1, wherein said substrate adjusting layer thickness d3 is 6-72 μm.
4. The PDLC dimming film with four-state transition of claim 1, wherein said first PDLC layer and said second PDLC layer each independently satisfy: it comprises UV glue and liquid crystal, the resistivity of the liquid crystal is more than or equal to 10 multiplied by 10 10 After polymerization of the UV gel, the current Is less than or equal to 10 mu A under the conditions of 25 ℃ and ultraviolet irradiation for 90 seconds.
5. The PDLC dimming film with four-state transition according to claim 1, wherein the surface dyne value of the side of the substrate adjusting layer close to the second PDLC layer is not less than 41mN/m, and the surface dyne value of the side of the substrate adjusting layer close to the common conductive layer is not less than 36mN/m.
6. The PDLC dimming film with four-state transition of claim 5, wherein a surface dyne value of a side of said substrate conditioning layer close to said second PDLC layer is 50-67mN/m, and a surface dyne value of a side of said substrate conditioning layer close to said common conductive layer is 40-46mN/m.
7. The PDLC dimming film with four-state transition according to claim 5, wherein different surface dyne values of both sides of the substrate adjusting layer are obtained by corona treatment, the corona-treated high-frequency ac voltage is 5300-6700V/m 2 。
8. The PDLC dimming film with four-state transition of claim 1, wherein a step dimming manner of said PDLC dimming film comprises: when the PDLC dimming film needs to be controlled to be in a transparent state, the common conducting layer is electrically connected with the first electrode, and the first conducting layer and the second conducting layer are electrically connected with the second electrode; when the PDLC dimming film needs to be controlled to be in a semitransparent state, the common conducting layer is electrically connected with the first electrode, the first conducting layer is electrically connected with the second electrode, and the second conducting layer is not electrified; when the PDLC dimming film needs to be controlled to be in a fog state, the common conducting layer is electrically connected with the first electrode, the second conducting layer is electrically connected with the second electrode, and the first conducting layer is not electrified; when the PDLC dimming film needs to be controlled to be in an enhanced fog state, the common conducting layer, the first conducting layer and the second conducting layer are not electrified.
9. The PDLC dimming film with four-state transition of claim 1, wherein at least one etching cut-off line is respectively provided on said first conductive layer and said second conductive layer, the etching cut-off line divides the corresponding conductive layer into a plurality of partitions, and electrode wiring is provided on each partition for conducting connection control for each partition to realize individual dimming control of each partition.
10. An assembly comprising a PDLC dimming film having a four state transition as claimed in any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311368790.4A CN117111351B (en) | 2023-10-23 | 2023-10-23 | PDLC dimming film with four-state transition and assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311368790.4A CN117111351B (en) | 2023-10-23 | 2023-10-23 | PDLC dimming film with four-state transition and assembly thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117111351A CN117111351A (en) | 2023-11-24 |
| CN117111351B true CN117111351B (en) | 2024-01-30 |
Family
ID=88800510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311368790.4A Active CN117111351B (en) | 2023-10-23 | 2023-10-23 | PDLC dimming film with four-state transition and assembly thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117111351B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5452113A (en) * | 1991-06-21 | 1995-09-19 | Nec Corporation | Color display element having PDLC layers and color filter |
| CN101261384A (en) * | 2008-04-29 | 2008-09-10 | 河北工业大学 | Polymer dispersed LCD door mirror compound film and method of manufacture |
| CN101673525A (en) * | 2008-09-08 | 2010-03-17 | 三星电子株式会社 | Display apparatuses having an active transflective device |
| CN103033969A (en) * | 2013-01-05 | 2013-04-10 | 北京三五九投资有限公司 | Method for preparing printed flexible display module based on double-layer PDLC (Polymer Dispersed Liquid Crystal) |
| CN104962120A (en) * | 2015-05-28 | 2015-10-07 | 张家港康得新光电材料有限公司 | Composition for forming polymer-dispersed liquid crystal, polymer dispersed liquid crystal coating, and self-luminescent light-adjusting film |
| CN107121823A (en) * | 2017-03-09 | 2017-09-01 | 张家港康得新光电材料有限公司 | Pdlc film component, its preparation method and display device |
| CN107632445A (en) * | 2017-10-30 | 2018-01-26 | 上海中航光电子有限公司 | A kind of display panel and display device |
| CN108051969A (en) * | 2017-12-18 | 2018-05-18 | 珠海兴业新材料科技有限公司 | A kind of hand-written film production technique of colour writing |
| CN108957826A (en) * | 2018-08-18 | 2018-12-07 | 深圳市华科创智技术有限公司 | A kind of PDLC light control material, light modulation film and preparation method thereof |
| CN113376889A (en) * | 2021-06-15 | 2021-09-10 | Oppo广东移动通信有限公司 | Electrochromic device based on polymer dispersed liquid crystal, preparation method and electronic equipment |
| CN218332212U (en) * | 2022-08-10 | 2023-01-17 | 上海隆昇光电新材料有限公司 | Electrode wiring structure of partition PDLC film and partition PDLC film |
-
2023
- 2023-10-23 CN CN202311368790.4A patent/CN117111351B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5452113A (en) * | 1991-06-21 | 1995-09-19 | Nec Corporation | Color display element having PDLC layers and color filter |
| CN101261384A (en) * | 2008-04-29 | 2008-09-10 | 河北工业大学 | Polymer dispersed LCD door mirror compound film and method of manufacture |
| CN101673525A (en) * | 2008-09-08 | 2010-03-17 | 三星电子株式会社 | Display apparatuses having an active transflective device |
| CN103033969A (en) * | 2013-01-05 | 2013-04-10 | 北京三五九投资有限公司 | Method for preparing printed flexible display module based on double-layer PDLC (Polymer Dispersed Liquid Crystal) |
| CN104962120A (en) * | 2015-05-28 | 2015-10-07 | 张家港康得新光电材料有限公司 | Composition for forming polymer-dispersed liquid crystal, polymer dispersed liquid crystal coating, and self-luminescent light-adjusting film |
| CN107121823A (en) * | 2017-03-09 | 2017-09-01 | 张家港康得新光电材料有限公司 | Pdlc film component, its preparation method and display device |
| CN107632445A (en) * | 2017-10-30 | 2018-01-26 | 上海中航光电子有限公司 | A kind of display panel and display device |
| CN108051969A (en) * | 2017-12-18 | 2018-05-18 | 珠海兴业新材料科技有限公司 | A kind of hand-written film production technique of colour writing |
| CN108957826A (en) * | 2018-08-18 | 2018-12-07 | 深圳市华科创智技术有限公司 | A kind of PDLC light control material, light modulation film and preparation method thereof |
| CN113376889A (en) * | 2021-06-15 | 2021-09-10 | Oppo广东移动通信有限公司 | Electrochromic device based on polymer dispersed liquid crystal, preparation method and electronic equipment |
| CN218332212U (en) * | 2022-08-10 | 2023-01-17 | 上海隆昇光电新材料有限公司 | Electrode wiring structure of partition PDLC film and partition PDLC film |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117111351A (en) | 2023-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8227999B2 (en) | Light output device | |
| CN113759626B (en) | Electrochromic film, electrochromic device, manufacturing method of electrochromic film, electrochromic glass and vehicle | |
| CN109799634B (en) | Sky glass of adjustable light starry sky decorative atmosphere lamp | |
| KR102101866B1 (en) | Method for manufacturing Flexible Electro-Chromic element | |
| WO2002100132A1 (en) | El lamp with improved brightness | |
| US10850666B1 (en) | Windows with active layers | |
| CN117111351B (en) | PDLC dimming film with four-state transition and assembly thereof | |
| US6406803B1 (en) | Electroluminescent device and method for producing the same | |
| EP0992177A1 (en) | Electroluminescent device and method for producing the same | |
| CN109116640B (en) | Graphene light modulation film and preparation method thereof | |
| EP0998836B1 (en) | Electroluminescent device and apparatus | |
| CN210465934U (en) | Liquid crystal light modulation film glass with ultralow transmittance and long service life | |
| CN114041083A (en) | Glass with variable light modulation film | |
| JP2020076879A (en) | Light control film and drive circuit | |
| US6433476B1 (en) | EL lamp with heater electrode | |
| JP2019128376A (en) | Dimmer | |
| CN214375727U (en) | Electrochromic device and electronic equipment | |
| JPS59201392A (en) | Dispersion electroluminescence | |
| CN108828867A (en) | A kind of electrochromic rearview and preparation method thereof | |
| CN214669959U (en) | Prevent membrane of adjusting luminance of electric breakdown | |
| CN220962063U (en) | Wiring structure of dimming device with multilayer structure | |
| US20050264179A1 (en) | Large-area electroluminescent light-emitting devices | |
| CN108445666A (en) | A kind of production method and display panel of display panel | |
| CN220896861U (en) | Thin film electric heating sheet | |
| CN217770400U (en) | Vehicle window heating sheet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |