CN113514997A - Electrochromic process and electrochromic device - Google Patents
Electrochromic process and electrochromic device Download PDFInfo
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- CN113514997A CN113514997A CN202110825249.6A CN202110825249A CN113514997A CN 113514997 A CN113514997 A CN 113514997A CN 202110825249 A CN202110825249 A CN 202110825249A CN 113514997 A CN113514997 A CN 113514997A
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000000758 substrate Substances 0.000 claims abstract description 117
- 239000004983 Polymer Dispersed Liquid Crystal Substances 0.000 claims abstract description 78
- 229920002120 photoresistant polymer Polymers 0.000 claims abstract description 38
- 229920001688 coating polymer Polymers 0.000 claims abstract description 4
- 239000010410 layer Substances 0.000 claims description 62
- 239000000049 pigment Substances 0.000 claims description 14
- 239000003292 glue Substances 0.000 claims description 12
- 239000011347 resin Substances 0.000 claims description 12
- 229920005989 resin Polymers 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- 230000003287 optical effect Effects 0.000 claims description 11
- 239000004925 Acrylic resin Substances 0.000 claims description 7
- 229920000178 Acrylic resin Polymers 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 5
- 239000012790 adhesive layer Substances 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 3
- 238000007639 printing Methods 0.000 claims description 3
- 239000011247 coating layer Substances 0.000 claims description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 8
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- 230000000149 penetrating effect Effects 0.000 description 2
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Images
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
- G02F1/15—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 an electrochromic effect
- G02F1/153—Constructional details
-
- 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 invention discloses an electrochromic process, which comprises the following steps: attaching a dry film photoresist on the surface of the conductive layer of the first substrate with the conductive layer; exposing and developing to obtain a plurality of photoresist points; coating polymer dispersed liquid crystal on the surface of the first substrate; attaching a second substrate with a conducting layer on the polymer dispersed liquid crystal, wherein the conducting layer of the second substrate faces the polymer dispersed liquid crystal and is tightly attached to the light resistance point; curing and forming; and electrifying to change the polymer dispersed liquid crystal from a fog state to a transparent state. The invention also discloses an electrochromic device which comprises a first substrate and a second substrate, wherein the opposite end surfaces of the first substrate and the second substrate are respectively provided with a conducting layer, a polymer dispersed liquid crystal layer is arranged between the first substrate and the second substrate, and a plurality of light resistance points are dispersed in the polymer dispersed liquid crystal layer. The electrochromic process and the electrochromic device accurately control the thickness of the polymer dispersed liquid crystal, so that the product can form a uniform milky white or semitransparent state, namely excellent photoelectric characteristics.
Description
Technical Field
The invention relates to the technical field of material processing, in particular to an electrochromic process and an electrochromic device.
Background
Electrochromism refers to a phenomenon in which the optical properties (reflectivity, transmittance, haze, etc.) of a material undergo a stable, reversible color change under the action of an applied electric field. The use of the electrochromic process gradually expands from the building field to the consumer electronics field, such as the shell of a mobile phone, and the adoption of the electrochromic process brings more fashion attributes to the mobile phone.
In order to achieve the purpose of electrochromism, one can utilize materials to present different colors under different valence states before and after oxidation-reduction reaction, and the other can utilize anisotropic crystallization of liquid crystal to realize the conversion from mist to transparent.
Polymer dispersed liquid crystals, also known as pdlc (polymer dispersed liquid crystal), are liquid crystals dispersed in an organic solid polymer matrix in small droplets of micron order, which, because the optical axes of the small droplets, which are composed of liquid crystal molecules, are in free orientation, have a refractive index that does not match the refractive index of the matrix, and are strongly scattered by the droplets as light passes through the matrix to assume an opaque milky or translucent state. The orientation of the optical axis of the liquid crystal microdroplet can be adjusted by electrifying and applying an electric field, and when the refractive indexes of the liquid crystal microdroplet and the liquid crystal microdroplet are matched, the liquid crystal microdroplet is in a transparent state; after the power is turned off, the electric field is removed and the liquid crystal droplets restore the original state of astigmatism. However, it is difficult for the conventional electrochromic process using liquid crystal to form a uniform milky white or translucent state.
In summary, how to effectively solve the problem that the electrochromic process is difficult to form a uniform milky white or translucent state is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, a first object of the present invention is to provide an electrochromic process that can effectively solve the problem of difficulty in forming a uniform milky-white or translucent state, and a second object of the present invention is to provide an electrochromic device.
In order to achieve the first object, the invention provides the following technical scheme:
an electrochromic process, comprising:
attaching a dry film photoresist on the surface of the conductive layer of the first substrate with the conductive layer;
exposing and developing to obtain a plurality of photoresist points;
coating polymer dispersed liquid crystal on the surface of the first substrate;
attaching a second substrate with a conducting layer on the polymer dispersed liquid crystal, wherein the conducting layer of the second substrate faces to the polymer dispersed liquid crystal and is tightly attached to the light resistance point;
curing and forming;
and electrifying to change the polymer dispersed liquid crystal from a fog state to a transparent state.
Preferably, in the above electrochromic process, the exposing and developing to obtain a plurality of photoresist dots specifically includes:
the photoresist dots are obtained in an array type and point distribution by exposure and development.
Preferably, in the above electrochromic process, the size of the photoresist dots is not greater than 30 μm, and the distance between two adjacent photoresist dots ranges from 0.5mm to 3 mm.
Preferably, in the above electrochromic process, the thickness of the dry film photoresist ranges from 8 μm to 20 μm.
Preferably, the electrochromic process further includes:
adding pigment and resin into the polymer dispersed liquid crystal, and fully stirring until the pigment and the resin are uniformly mixed to obtain glue containing the polymer dispersed liquid crystal;
coating the polymer dispersed liquid crystal on the surface of the first substrate specifically comprises:
and coating the glue containing the polymer dispersed liquid crystal on the surface of the first substrate.
Preferably, in the above electrochromic process, the resin is an acrylic resin, and the glue contains 10 parts by weight of the polymer dispersed liquid crystal, 2 parts by weight of the acrylic resin, and 0.01 part by weight of the pigment.
Preferably, the electrochromic process further includes:
and sequentially coating a film and printing ink on one surface of the first substrate and/or the second substrate, which faces away from the polymer dispersed liquid crystal, and attaching a third substrate through optical cement.
Applying the electrochromic process provided by the invention, firstly, attaching a dry film photoresist on the surface of a conducting layer of a first substrate with the conducting layer; then a plurality of light resistance points are obtained through exposure and development; then coating polymer dispersed liquid crystal on the surface of the first substrate; attaching a second substrate with a conducting layer on the polymer dispersed liquid crystal, wherein the conducting layer of the second substrate faces the polymer dispersed liquid crystal and is tightly attached to the light resistance point; then curing and forming; finally, electrifying to change the polymer dispersed liquid crystal from a fog state to a transparent state. The thickness of the photoresist point determines the distance between the conductive layer of the first substrate and the conductive layer of the second substrate, and also determines the thickness of the polymer dispersed liquid crystal. Through the accurate control of the thickness of the polymer dispersed liquid crystal, the product can form a uniform milky white or semitransparent state, namely excellent photoelectric characteristics.
In order to achieve the second object, the present invention provides the following technical solutions:
an electrochromic device comprises a first substrate and a second substrate, wherein conducting layers are respectively arranged on the opposite end faces of the first substrate and the second substrate, a polymer dispersed liquid crystal layer is arranged between the first substrate and the second substrate, and a plurality of light resistance points are dispersed in the polymer dispersed liquid crystal layer.
By applying the electrochromic device, the light resistance points distributed in a point shape are dispersed in the polymer dispersed liquid crystal layer, and two ends of each light resistance point are respectively clung to the conducting layer of the first substrate and the conducting layer of the second substrate, so that the distance between the conducting layer of the first substrate and the conducting layer of the second substrate is determined by the thickness of the light resistance points, and the thickness of the polymer dispersed liquid crystal is also determined. By the accurate control of the thickness of the polymer dispersed liquid crystal, the electrochromic device has a uniform milky white or semitransparent state, namely excellent photoelectric characteristics.
Preferably, in the electrochromic device, the size of the photoresist dots is less than 30 μm, and the distance between two adjacent photoresist dots ranges from 0.5mm to 3 mm.
Preferably, in the electrochromic device, a film plating layer, a screen printing ink layer, an optical adhesive layer and a third substrate are sequentially arranged on one surface of the first substrate and/or the second substrate, which faces away from the polymer dispersed liquid crystal layer, from inside to outside.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic flow diagram of an electrochromic process according to an embodiment of the invention;
FIG. 2 is a schematic view of a photoresist dot arrangement;
FIG. 3 is a schematic view of a second substrate and a first substrate after being bonded;
FIG. 4 is a schematic view illustrating a bonding process of a second substrate;
fig. 5 is a schematic structural diagram of an electrochromic device according to an embodiment of the present invention.
The drawings are numbered as follows:
the liquid crystal display comprises a first substrate 1, a first substrate body 11, a second substrate 2, a second substrate body 21, a conducting layer 12, light resistance dots 3, polymer dispersed liquid crystals 4, a third substrate 5, a coating layer 51, a silk-screen printing ink layer 52, an optical adhesive layer 53, a net cage 6, an upper platform 7 and rollers 8.
Detailed Description
The embodiment of the invention discloses an electrochromic process and device, which are used for accurately controlling the thickness of polymer dispersed liquid crystal so as to obtain excellent photoelectric characteristics.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic flow chart of an electrochromic process according to an embodiment of the invention.
In one embodiment, the present invention provides an electrochromic process comprising the steps of:
s1: attaching a dry film photoresist on the surface of the conductive layer 12 of the first substrate 1 with the conductive layer 12;
the surface of the first substrate 1 has a conductive layer 12, that is, the first substrate 1 includes a first substrate body 11 and the conductive layer 12, specifically, the entire surface of the first substrate 1 has the uniform conductive layer 12, and a dry film photoresist is attached to the surface of the conductive layer 12, specifically, the dry film photoresist may be rolled. The dry film photoresist is used to control the thickness of the polymer dispersed liquid crystal 4, so the thickness of the dry film photoresist is set as required, and the thickness of the dry film photoresist determines the thickness of the polymer dispersed liquid crystal 4.
The first substrate 1 is preferably made of a material having high transmittance and yellowing resistance, such as polyethylene terephthalate (PET), thermoplastic polyurethane elastomer (TPU), Polyimide (PI), or Glass (Glass). The conductive layer 12 is preferably made of a low-resistance material such as Indium Tin Oxide (ITO) or nano silver.
S2: exposing and developing to obtain a plurality of light resistance points 3;
the distribution of the light resistance points 3 can be in a lattice distribution, and the distribution is uniform, so that the space control is convenient. The light-blocking dots 3 may be distributed in other ways such as randomly, if necessary. Specifically, the corresponding distribution is obtained by the mask setting during exposure and development.
S3: coating a polymer dispersed liquid crystal 4 on the surface of the first substrate 1;
specifically, the obtained first substrate 1 with the photoresist dots 3 attached thereto is placed on a lower platform (a vacuum platform in a net cage 6 type) of a roller 8 bonding device, and polymer dispersed liquid crystal 4 is spread on the surface of the roll bonding start end. The polymer dispersed liquid crystal 4 may be a conventional commercially available material, and is not particularly limited.
S4: attaching a second substrate 2 with a conductive layer 12 on the polymer dispersed liquid crystal 4, wherein the conductive layer 12 of the second substrate 2 faces the polymer dispersed liquid crystal 4 and is tightly attached to the light resistance point 3;
specifically, a second substrate 2 with the same size as the first substrate 1 in step S1 is taken, the second substrate 2 has a conductive layer 12, that is, the second substrate 2 includes a second substrate body 21 and a conductive layer 12, the second substrate 2 is placed on the upper platform 7 of the bonding apparatus, after being turned over and aligned, the roller 8 is pushed up and simultaneously moves rightward at a constant speed to complete bonding, as shown in fig. 3, the photoresist dots 3 are filled with polymer dispersed liquid crystal 4 after bonding. The second substrate 2 may be made of the same material as the first substrate 1.
S5: curing and forming;
specifically, the curing is carried out by ultraviolet irradiation, so that the whole structure is cured.
S6: the polymer dispersed liquid crystal 4 is changed from the mist state to the transparent state by energization.
And electrifying the cured product to change the cured product from a fog state to a transparent state, and changing the penetration rate to finish the manufacture.
By applying the electrochromic process provided by the invention, the photoresist dots 3 are obtained by sticking the dry film photoresist in advance and exposing and developing, and the thickness of the photoresist dots 3 determines the distance between the conductive layer 12 of the first substrate 1 and the conductive layer 12 of the second substrate 2, and also determines the thickness of the polymer dispersed liquid crystal 4. By the precise control of the thickness of the polymer dispersed liquid crystal 4, the product can be formed into a uniform milky white or translucent state, i.e., excellent photoelectric characteristics.
Preferably, the size of the light resistance dots 3 is not more than 30 μm, and the distance between two adjacent light resistance dots 3 ranges from 0.5mm to 3 mm. The density of the light resistance points 3 after development can influence the thickness of the polymer dispersed liquid crystal 4, if the light resistance points 3 are too thin, the light resistance points can not play a supporting role during lamination, and the situation that the thickness of the local polymer dispersed liquid crystal 4 is too thin can occur; if the photoresist dots 3 are too dense, the whole surface is regarded as a dry film, which may affect the photoelectric effect and transmittance. Therefore, by controlling the density of the photoresist dots 3, a good supporting effect is obtained and adverse effects on the photoelectric effect and the penetrating power are avoided.
The thickness of the dry film photoresist ranges from 8 μm to 20 μm. The thickness of the dry film photoresist, namely the thickness of the photoresist points 3, is controlled within the range of 8-20 μm, so that the conditions that the haze is not enough and light is easy to penetrate when the thickness is too thin in a static state can be avoided, and the conditions that the driving voltage is higher and even the driving cannot be performed when the thickness is too thick in a working state can be avoided.
On the basis of the above embodiment, the electrochromic process further includes:
s01: adding pigment and resin into the polymer dispersed liquid crystal 4, and fully stirring until the pigment and the resin are uniformly mixed to obtain glue containing the polymer dispersed liquid crystal 4;
step S3 specifically includes:
the surface of the first substrate 1 is coated with glue containing polymer dispersed liquid crystal 4.
That is, the above-mentioned coating of the polymer dispersed liquid crystal 4 on the surface of the first substrate 1 includes both the case of coating the polymer dispersed liquid crystal 4 alone and the case of coating the composition containing the polymer dispersed liquid crystal 4, such as glue. By adding the resin, the adhesive force with the first substrate 1 and the second substrate 2 is improved, so that the whole structure is more reliable. And the color of the product can be adjusted by adding the pigment. The color type of the specific pigment can be set according to the product requirement, and is not limited specifically here.
In order to ensure that the penetration rate is changed, the metering of the pigment is controlled, and the mass ratio is less than 0.5 percent as the best. The resin can be acrylic resin, and in order to improve the bonding force, the mass ratio of the added acrylic resin is 5-10%. As a preferred example, the glue contains 10 parts by weight of polymer dispersed liquid crystal 4, 2 parts by weight of acrylic resin and 0.01 part by weight of pigment in parts by weight.
Specifically, the polymer dispersed liquid crystal 4 (containing liquid crystal and polymer), the pigment and the resin are uniformly mixed by fully stirring at the temperature of 30-40 ℃ to obtain the glue. Based on the concept of saturation, the higher the temperature is, the more difficult the liquid crystal molecules in the polymer dispersed liquid crystal 4 are separated out in a certain temperature range, so that the stirring is carried out at 30-40 ℃.
On the basis of the above embodiments, the electrochromic process further includes step S7: and sequentially coating a film and printing ink on one surface of the first substrate 1 and/or the second substrate 2 back to the polymer dispersed liquid crystal 4, and attaching a third substrate 5 through optical cement. Specifically, the surface of the product obtained in step S6 may be the back surface of the first substrate 1, the back surface of the second substrate 2, or the back surfaces of the first substrate 1 and the second substrate 2. As shown in fig. 5, the back surface of the second substrate 2 is coated with a plating film and printed with a screen printing ink, and then is bonded to the third substrate 5 with an optical adhesive (OCA). The third substrate 5 is preferably made of a material having high transmittance, high hardness, and yellowing resistance. Through the process, more elements are added for the product, and more diversified product appearance requirements can be met.
The invention also discloses an electrochromic process and a device, in a specific embodiment, the electrochromic device comprises a first substrate 1 and a second substrate 2, conductive layers 12 are respectively arranged on the opposite end surfaces of the first substrate 1 and the second substrate 2, a polymer dispersed liquid crystal layer is arranged between the first substrate 1 and the second substrate 2, light resistance points 3 distributed in a point shape are dispersed in the polymer dispersed liquid crystal layer, and two ends of each light resistance point 3 are respectively clung to the conductive layers 12 of the first substrate 1 and the conductive layers 12 of the second substrate 2. The polymer dispersed liquid crystal layer includes a polymer dispersed liquid crystal, and may be a glue layer having a polymer dispersed liquid crystal, a pigment, and a resin, as necessary. The specific arrangement of the first substrate 1, the second substrate 2, the conductive layer 12 and the photoresist dots 3 can refer to the related structure in the electrochromic process, and will not be described herein again. In addition, the electrochromic device can be specifically processed by the electrochromic process in each embodiment.
By applying the electrochromic device, the light resistance points 3 distributed in a point shape are dispersed in the polymer dispersed liquid crystal layer, and two ends of each light resistance point 3 are respectively clung to the conducting layer 12 of the first substrate 1 and the conducting layer 12 of the second substrate 2, so that the distance between the conducting layer 12 of the first substrate 1 and the conducting layer 12 of the second substrate 2 is determined by the thickness of the light resistance points 3, and the thickness of the polymer dispersed liquid crystal is also determined. By the accurate control of the thickness of the polymer dispersed liquid crystal, the electrochromic device has a uniform milky white or semitransparent state, namely excellent photoelectric characteristics.
Specifically, the size of the photoresist dots 3 is less than 30 μm, and the distance between two adjacent photoresist dots 3 is 0.5mm-3mm, so as to obtain a good supporting effect and avoid adverse effects on the photoelectric effect and the penetrating power.
Further, a film coating layer 51, a silk-screen printing ink layer 52, an optical adhesive layer 53 and a third substrate 5 are sequentially arranged on one surface of the first substrate 1 and/or the second substrate 2, which is back to the polymer dispersed liquid crystal, from inside to outside. The surface treatment is carried out to meet the requirements of more diversified colors.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An electrochromic process, comprising:
attaching a dry film photoresist on the surface of the conductive layer of the first substrate with the conductive layer;
exposing and developing to obtain a plurality of photoresist points;
coating polymer dispersed liquid crystal on the surface of the first substrate;
attaching a second substrate with a conducting layer on the polymer dispersed liquid crystal, wherein the conducting layer of the second substrate faces to the polymer dispersed liquid crystal and is tightly attached to the light resistance point;
curing and forming;
and electrifying to change the polymer dispersed liquid crystal from a fog state to a transparent state.
2. The electrochromic process according to claim 1, wherein the exposing and developing to obtain the plurality of photoresist dots specifically comprises:
the photoresist dots are obtained in an array type and point distribution by exposure and development.
3. The electrochromic process according to claim 1, wherein the size of the light-blocking dots is not more than 30 μm, and the distance between two adjacent light-blocking dots ranges from 0.5mm to 3 mm.
4. The electrochromic process of claim 1, wherein the dry film photoresist has a thickness in the range of 8 μ ι η to 20 μ ι η.
5. The electrochromic process of any one of claims 1-4, further comprising:
adding pigment and resin into the polymer dispersed liquid crystal, and fully stirring until the pigment and the resin are uniformly mixed to obtain glue containing the polymer dispersed liquid crystal;
coating the polymer dispersed liquid crystal on the surface of the first substrate specifically comprises:
and coating the glue containing the polymer dispersed liquid crystal on the surface of the first substrate.
6. The electrochromic process according to claim 5, wherein said resin is an acrylic resin, and said glue comprises 10 parts by weight of said polymer dispersed liquid crystal, 2 parts by weight of said acrylic resin and 0.01 parts by weight of said pigment, in parts by weight.
7. The electrochromic process of any one of claims 1-4, further comprising:
and sequentially coating a film and printing ink on one surface of the first substrate and/or the second substrate, which faces away from the polymer dispersed liquid crystal, and attaching a third substrate through optical cement.
8. The electrochromic device is characterized by comprising a first substrate and a second substrate, wherein conducting layers are respectively arranged on the opposite end faces of the first substrate and the second substrate, a polymer dispersed liquid crystal layer is arranged between the first substrate and the second substrate, light resistance points distributed in a point shape are dispersed in the polymer dispersed liquid crystal layer, and two ends of each light resistance point are respectively clung to the conducting layers of the first substrate and the conducting layers of the second substrate.
9. The electrochromic device according to claim 8, wherein the size of the light-blocking dots is less than 30 μm, and the distance between two adjacent light-blocking dots is in the range of 0.5mm-3 mm.
10. The electrochromic device according to claim 8 or 9, wherein a coating layer, a silk-screen ink layer, an optical adhesive layer and a third substrate are sequentially arranged on the surface of the first substrate and/or the second substrate facing away from the polymer dispersed liquid crystal layer from inside to outside.
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| CN202110825249.6A CN113514997A (en) | 2021-07-21 | 2021-07-21 | Electrochromic process and electrochromic device |
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