CN115453792A - Transverse-structure electric-control light-adjusting film unit and preparation method thereof - Google Patents

Transverse-structure electric-control light-adjusting film unit and preparation method thereof Download PDF

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Publication number
CN115453792A
CN115453792A CN202211293914.2A CN202211293914A CN115453792A CN 115453792 A CN115453792 A CN 115453792A CN 202211293914 A CN202211293914 A CN 202211293914A CN 115453792 A CN115453792 A CN 115453792A
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China
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layer
electrode
electrode layer
strip
electrically controlled
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宋爱民
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Jinan Jiayuan Electronics Ltd
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Jinan Jiayuan Electronics Ltd
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Priority to CN202211293914.2A priority Critical patent/CN115453792A/en
Publication of CN115453792A publication Critical patent/CN115453792A/en
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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
    • G02F1/155—Electrodes
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/15—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
    • G02F1/155—Electrodes
    • G02F2001/1552—Inner electrode, e.g. the electrochromic layer being sandwiched between the inner electrode and the support substrate---- this group, now to be changed, should already been created by implementation of a previous DOC14 ----

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

Abstract

The invention relates to the technical field of light adjusting films, and particularly discloses an electric control light adjusting film unit with a transverse structure and a preparation method thereof, wherein the light adjusting film unit comprises: the ion storage layer comprises a first electrode layer, an electrochromic layer, an electrolyte layer, an ion storage layer and a second electrode layer which are arranged in sequence; the first electrode layer comprises at least one strip electrode, and a distance is set between every two adjacent strip electrodes; the second electrode layer comprises at least one strip electrode, and a set distance is arranged between every two adjacent strip electrodes; the strip electrodes of the first electrode layer and the strip electrodes of the second electric layer are distributed at intervals. The strip electrodes in the first electrode layer and the second electrode layer are distributed at intervals to form a finger-inserting electrode structure, so that the current between the two electrode layers is not transmitted vertically any more but flows obliquely, the voltage drop can be prevented from being concentrated on the surface of the electrode, and the aging phenomenon of the electrode is effectively reduced.

Description

Transverse-structure electric-control light-adjusting film unit and preparation method thereof
Technical Field
The invention relates to the technical field of light adjusting films, in particular to an electric control light adjusting film unit with a transverse structure and a preparation method thereof.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The light adjusting film generally comprises an upper transparent conductive layer, a lower transparent conductive layer and a light control layer arranged between the two transparent conductive layers; the light adjusting film can be classified into a suspended particle light adjusting film, a polymer dispersed liquid crystal light adjusting film, an electrochemical reaction light adjusting film (electrochromic light adjusting film) and the like according to different light control mechanisms of the light control layer.
For an electrochemical reaction light-adjusting film (electrochromic light-adjusting film), in conjunction with fig. 1, it is common to arrange between two substrates: a first transparent conductive layer, an electrochromic layer (working electrode), an electrolyte layer, an ion storage layer (counter electrode), and a second transparent conductive layer. The working principle is that external voltage is applied through electrodes at two ends of an electrochromic dimming film, ions are transferred into (or out of) the electrochromic layer under the action of an electric field of the external voltage, so that the valence number of the electrochromic material is reduced (or increased), and the electrochromic material is subjected to color change before balance is achieved; when equilibrium is reached, the color change of the electrochromic material is stabilized.
In the prior art, a first transparent conductive layer and a second transparent conductive layer are arranged oppositely, and both the first transparent conductive layer and the second transparent conductive layer completely cover the surface of the whole electrochromic layer (working electrode); on one hand, the transparent conducting layer mostly adopts an ITO (indium tin oxide) film, and the ITO film is expensive because indium is a rare metal and the reserve volume is small; on the other hand, because the upper and lower transparent electrodes are completely oppositely arranged, the electric field formed between the upper and lower transparent electrodes is vertically distributed, most of the voltage drop is applied to the thin electrochromic film, the electric field is high, the point aging effect is accelerated, and the service life of the electrochromic device is shortened.
In addition, most of the existing light modulation film products use an ITO transparent electrode, and in order to ensure higher conductivity, the electrode layer is made of a thicker material, and cracks are easy to appear after the light modulation film is bent for many times, so that the resistance is increased.
Disclosure of Invention
In order to solve the problems, the invention provides an electric control light modulation film unit with a transverse structure and a preparation method thereof.
In some embodiments, the following technical scheme is adopted:
an electrically controlled dimming film unit of transverse configuration comprising: the electrochemical cell comprises a first electrode layer, an electrochromic layer, an electrolyte layer, an ion storage layer and a second electrode layer which are arranged in sequence; the first electrode layer comprises at least one strip electrode, and a distance is set between every two adjacent strip electrodes; the second electrode layer comprises at least one strip electrode, the distance between two adjacent strip electrodes is set at intervals,
the strip electrodes of the first electrode layer and the strip electrodes of the second electric layer are distributed at intervals.
As an alternative embodiment, further comprising: a substrate layer disposed adjacent to the second electrode layer, the substrate layer being a transparent substrate or an opaque substrate.
As an alternative embodiment, further comprising: a transparent encapsulation layer disposed adjacent to the first electrode layer.
As an optional embodiment, the width range of the strip-shaped electrodes in the first electrode layer or the second electrode layer satisfies: 10um to 3mm.
As an alternative embodiment, the first electrode layer or the second electrode layer is a transparent electrode or a non-transparent electrode.
In other embodiments, the following technical solutions are adopted:
a method for preparing the transverse structure electric control light adjusting film unit comprises the following steps:
depositing a second electrode layer on the transparent substrate by screen printing, and then sequentially depositing an ion storage layer, an electrolyte layer, an electrochromic layer and a first electrode layer by screen printing;
the first electrode layer comprises at least one strip electrode, and a distance is set between every two adjacent strip electrodes; the second electrode layer comprises at least one strip electrode, and a set distance is arranged between every two adjacent strip electrodes at intervals; the strip electrodes of the first electrode layer and the strip electrodes of the second electrical layer are distributed at intervals.
In other embodiments, the following technical solutions are adopted:
an electronic control light adjusting film comprises at least one transverse structure electronic control light adjusting film unit.
As an optional implementation scheme, the strip-shaped electrodes in the first electrode layer are connected to a first electrode of an external power supply, and the strip-shaped electrodes in the second electrode layer are connected to a second electrode of the external power supply.
In other embodiments, the following technical solutions are adopted:
a window structure adopts the above electric control dimming film.
In other embodiments, the following technical solutions are adopted:
the building outer wall adopts the electric control dimming film.
Compared with the prior art, the invention has the beneficial effects that:
(1) The strip electrodes in the first electrode layer and the second electrode layer are distributed at intervals to form a finger-inserting electrode structure, so that the current between the two electrode layers is not transmitted vertically any more but flows obliquely, the voltage drop can be prevented from being concentrated on the surface of the electrode, and the aging phenomenon of the electrode is effectively reduced.
(2) Compared with a parallel plane electrode structure, the maximum withstand voltage of the interdigital electrode structure can be improved by more than 1000%, because the distance between the transversely arranged upper electrode and the transversely arranged lower electrode is far larger than the vertical distance, the withstand voltage of the electrode is higher under the same electric field intensity, if the thickness of a film is 10 mu m, the distance between the upper electrode and the lower electrode is 1mm, and the withstand voltage of the interdigital electrode structure can be improved by nearly 100 times.
(3) The finger inserting electrode structure of the electric control light adjusting film has low requirement on equipment in the production process, is easy to realize, has high yield and greatly reduces the product cost; the adopted distributed transverse electrodes can be even realized by traditional opaque conductive materials (such as metal electrodes, graphite electrodes, silver paste electrodes and the like), and higher light transmittance can be kept; has higher bending resistance, and is not easy to age devices caused by mechanical stress.
Additional features and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic view of a conventional electrochromic window construction;
fig. 2 is a schematic structural view of an electric control light adjusting film unit with a transverse structure in the embodiment of the invention.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Example one
In one or more embodiments, an electronically controlled dimming film unit with a transverse structure is disclosed, and with reference to fig. 2, specifically includes: the electrochemical device comprises a first electrode layer, an electrochromic layer (a working electrode layer), an electrolyte layer, an ion storage layer (a counter electrode layer) and a second electrode layer which are sequentially arranged from top to bottom; the first electrode layer comprises at least one strip electrode, and when two or more strip electrodes are arranged, a set distance is arranged between every two adjacent strip electrodes; the second electrode layer comprises at least one strip electrode, and when two or more strip electrodes are arranged, a distance is set between every two adjacent strip electrodes at intervals; the strip electrodes of the first electrode layer and the strip electrodes of the second electrode layer are distributed alternately, and the upper electrode layer and the lower electrode layer form a finger inserting electrode structure.
In this embodiment, a transparent encapsulation layer is further disposed on the first electrode layer, and the transparent encapsulation layer is an insulation structure; a transparent substrate is arranged below the second electrode layer, and a PET film can be selected as the transparent substrate, so that the transparent substrate has good insulativity. Of course, the substrate below the second electrode layer may also be opaque.
In this embodiment, the positive electrode of the external power supply is connected to each strip electrode of the first electrode layer, and the negative electrode of the external power supply is connected to each strip electrode of the second electrode layer; the electrolyte layer is a non-transparent layer and is a mixture of solid, liquid and glue; when the external power supply is switched on, a transverse electric field component is formed between each strip electrode of the first electrode layer and each strip electrode of the second electrode layer; under the action of an electric field of an external voltage, ions in the electrolyte layer are transferred into (or out of) the electrochromic layer, so that the valence number of the electrochromic material is reduced (or increased), and the color of the electrochromic material is changed.
In this embodiment, the width of the strip electrode in the first electrode layer or the second electrode layer is selected according to actual needs; the preferred width range is 10um to 3mm, but other width ranges can be selected according to actual requirements. The first electrode layer or the second electrode layer can be transparent electrodes such as ITO films, and the two electrode layers are of strip-shaped electrode structures distributed at intervals, so that the area of the transparent electrodes is reduced, and the cost is saved; in other embodiments, the ratio of the areas of the opaque portion and the transparent portion is sufficiently reduced, so that the first electrode layer or the second electrode layer can be even an opaque electrode, and can also maintain high light transmittance; generally, when the width of the stripe electrode is less than 100um, it is difficult to be observed by naked eyes.
In other embodiments, an electrically controlled light adjusting film with a transverse structure is disclosed, which comprises at least one electrically controlled light adjusting film unit with the transverse structure; the transverse structure electric control light adjusting film units are spliced or integrated. The anode of the external power supply is connected with each strip electrode of the first electrode layer, and the cathode of the external power supply is connected with each strip electrode of the second electrode layer; the transverse-structure electric control dimming film can be in a transparent state or a non-transparent state by applying voltage to the two electrode layers through an external power supply; when the transverse structure is in a non-transparent state, the color displayed by the transverse structure electric control light adjusting film is related to the material of the electrochromic layer.
Based on the automatically controlled membrane of adjusting luminance of transverse structure in this embodiment, this embodiment has still disclosed a window structure, for example the window of building or the skylight of car etc. this window structure has adopted the automatically controlled membrane structure of adjusting luminance of transverse structure, can realize that the window structure switches between transparent and opaque.
Based on the automatically controlled membrane of adjusting luminance of transverse structure in this embodiment, this embodiment has still disclosed a building outer wall, and this outer wall has adopted the automatically controlled membrane structure of adjusting luminance of transverse structure, can realize that the outer wall switches between transparent and opaque.
Example two
In one or more embodiments, a method for preparing an electronically controlled light modulation film unit with a transverse structure is disclosed, which specifically comprises the following steps:
depositing a second electrode layer on the transparent substrate through screen printing, and then sequentially depositing an ion storage layer, an electrolyte layer, an electrochromic layer and a first electrode layer through screen printing;
alternatively, the first and second electrodes may be,
depositing a second electrode layer on the transparent substrate by ink-jet printing, and then sequentially depositing an ion storage layer, an electrolyte layer, an electrochromic layer and a first electrode layer by ink-jet printing.
The first electrode layer comprises at least one strip electrode, and a distance is set between every two adjacent strip electrodes; the second electrode layer comprises at least one strip electrode, and a set distance is arranged between every two adjacent strip electrodes at intervals; the strip electrodes of the first electrode layer and the strip electrodes of the second electrical layer are distributed at intervals.
The specific structure of the transverse structure electrically-controlled light adjusting film unit is described in detail in the first embodiment, and is not described in detail here.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.

Claims (10)

1. An electrically controlled light adjusting film unit of transverse structure, comprising: the ion storage layer comprises a first electrode layer, an electrochromic layer, an electrolyte layer, an ion storage layer and a second electrode layer which are arranged in sequence; the first electrode layer comprises at least one strip electrode, and a distance is set between every two adjacent strip electrodes at intervals; the second electrode layer comprises at least one strip electrode, and a set distance is arranged between every two adjacent strip electrodes; the strip electrodes of the first electrode layer and the strip electrodes of the second electric layer are distributed at intervals.
2. An electronically controlled light modulating film unit of transverse configuration as recited in claim 1, further comprising: a substrate layer disposed adjacent to the second electrode layer, the substrate layer being a transparent substrate or an opaque substrate.
3. An electrically controlled light adjusting film unit of transverse configuration as claimed in claim 1, further comprising: a transparent encapsulation layer disposed adjacent to the first electrode layer.
4. An electrically controlled light adjusting film unit with a transverse structure as claimed in claim 1, wherein the width range of the strip-shaped electrodes in the first electrode layer or the second electrode layer satisfies: 10um to 3mm.
5. An electrically controlled light adjusting film unit with a transverse structure as claimed in claim 1, wherein the first electrode layer or the second electrode layer is a transparent electrode or a non-transparent electrode.
6. A method of making a transverse structure, electrically controlled light film dimming film unit according to any of claims 1-5, comprising:
depositing a second electrode layer on the transparent substrate through screen printing, and then sequentially depositing an ion storage layer, an electrolyte layer, an electrochromic layer and a first electrode layer through screen printing;
alternatively, the first and second liquid crystal display panels may be,
depositing a second electrode layer on the transparent substrate by ink-jet printing, and then sequentially depositing an ion storage layer, an electrolyte layer, an electrochromic layer and a first electrode layer by ink-jet printing.
7. An electrically controlled light adjusting film, characterized by comprising at least one transverse structure electrically controlled light adjusting film unit, wherein the transverse structure electrically controlled light adjusting film unit adopts the transverse structure electrically controlled light adjusting film unit of any one of claims 1 to 5.
8. The electrically controlled dimming film of claim 7, wherein the strip-shaped electrodes of the first electrode layer are connected to a first electrode of an external power supply, and the strip-shaped electrodes of the second electrode layer are connected to a second electrode of the external power supply.
9. A window structure characterized by using the electrically controlled dimming film according to claim 7 or 8.
10. An exterior wall of a building, characterized in that the electrically controlled dimming film according to claim 7 or 8 is used.
CN202211293914.2A 2022-10-21 2022-10-21 Transverse-structure electric-control light-adjusting film unit and preparation method thereof Pending CN115453792A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211293914.2A CN115453792A (en) 2022-10-21 2022-10-21 Transverse-structure electric-control light-adjusting film unit and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211293914.2A CN115453792A (en) 2022-10-21 2022-10-21 Transverse-structure electric-control light-adjusting film unit and preparation method thereof

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CN115453792A true CN115453792A (en) 2022-12-09

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