A packaged light valve and dimming glass assembly

Abstract

This patent provides a packaged light valve and dimming glass assembly. By setting a package area with a certain width on at least one side of the light control area, the damage to the light control area material by negative factors such as moisture and air in the external environment is isolated, the aging process of the light valve in a high temperature and high humidity environment is delayed, the edge failure of the light valve is avoided, and the service life of the product is significantly extended.

Description

Technical Field

[0001] This patent relates to the field of electronic light-controlling materials, and in particular to a packaged light valve and dimming glass assembly. Background Art

[0002] A light valve is an electronic light control device. It is mainly composed of a light control layer between two transparent conductive films. When the electric field is turned on, the arrangement or state of the material in the light control layer changes, thereby changing the light transmittance of the device, such as from low transmittance to high transmittance, or from high transmittance to low transmittance. Through the action of the electric field, it can achieve rapid conversion between the on state and the off state. According to the different light control mechanisms of the light control layer, light valves can be divided into suspended particle light valves, polymer dispersed liquid crystal light valves, electrochemical reaction light valves, etc.

[0003] Depending on the substrate of the light valve, the light valve can be based on a plastic sheet such as PET, which is generally called a dimming film; or it can be based on glass, which is generally called a dimming glass. The assembly formed by laminating the dimming film is generally called a dimming glass assembly.

[0004] The key part of the dimming film, dimming glass and dimming glass assembly is the light control layer. The light control layer, such as the suspended particle light control layer or the polymer dispersed liquid crystal light control layer, is very sensitive to the humidity and air in the environment. Long-term exposure to high temperature and humid environment will cause the dimming film to fail from the edges and cause the stability of the dimming film to decrease. Therefore, the light control area needs to be closely protected.

[0005] Patent CN103003746B discloses a technical solution of pasting a sealing tape on the outer edge of the dimming film. Before pasting the tape, the moisture inside the film must be removed. This solution still has the problems of complex operation, incomplete removal of moisture inside the film, and poor sealing effect. Therefore, it is necessary to provide a light valve preparation technology that is simpler, easier to operate, and has a good sealing effect.

[0006] The inventor of this patent provides a method for preparing a light valve, and creatively arranges packaging materials around the light control area of ​​the functional layer to form a packaging area to prepare a packaged light valve. The packaged light valve is integrally formed, and there is no residual moisture inside. It also plays a more perfect isolation role against negative factors such as external moisture and air, and protects the light control area material from interference to the greatest extent. It can reduce or avoid environmental factors such as high temperature and humidity, and the film in the dimming glass component. The continuous damage to the light valve and the dimming glass component can effectively improve the stability of the light valve, improve the product qualification rate, and extend the service life of the product.

[0007] Patent content

[0008] This solution proposes a packaged light valve and dimming glass assembly, which sets a packaging area on at least one side of the light control area facing the outside of the light valve to isolate the light control area material from damage by factors such as moisture and air in the external environment, thereby improving the environmental stability of related products and achieving the beneficial effects of improving product qualification rate and extending product service life.

[0009] In a first aspect, this patent provides a packaged light valve, comprising:

[0010] a first transparent substrate,

[0011] a first transparent electrode formed on a first transparent substrate,

[0012] The second transparent substrate,

[0013] a second transparent electrode formed on a second transparent substrate,

[0014] The first transparent electrode and the second transparent electrode are arranged opposite to each other, and a functional layer is arranged between the first transparent electrode and the second transparent electrode. The functional layer consists of a light control area and a packaging area, and the packaging area is arranged at least partially around the light control area facing the outer side of the light valve.

[0015] Furthermore, a packaging area is arranged on one side of the light control area facing the outer side of the light valve.

[0016] Furthermore, packaging areas are respectively arranged on two sides of the light control area facing the outer side of the light valve.

[0017] Furthermore, a packaging area is arranged all around the light control area facing the outside of the light valve.

[0018] Furthermore, the light control region is at least one of a suspended particle active layer and a polymer dispersed liquid crystal active layer.

[0019] Furthermore, the packaging area is one or more of epoxy resin, polyurethane resin, acrylic resin, and silicone resin.

[0020] Furthermore, the encapsulation area is formed by cross-linking and curing one or more of a cross-linkable and curable acrylic resin glue, a cross-linkable and curable polyurethane resin glue, a cross-linkable and curable acrylic resin glue, and a cross-linkable and curable silicone oil.

[0021] Furthermore, the width of the packaging area and the thickness of the light valve satisfy width: thickness=20-300, and width≤5cm.

[0022] Furthermore, the light control area and the encapsulation area are coated by coating the light control area matrix emulsion and the encapsulation area matrix emulsion respectively.

[0023] Furthermore, the light control area and the packaging area are coated simultaneously through a one-time coating process.

[0024] Furthermore, the light control area and the packaging area are formed by thermal curing or UV curing.

[0025] Furthermore, the light control area and the packaging area are simultaneously formed into films through one-time UV curing.

[0026] Furthermore, the UV curing is to add a photoinitiator into the matrix emulsion of the light-controlling area and the encapsulation area, and then induce a polymerization reaction by ultraviolet irradiation after coating.

[0027] Furthermore, the photoinitiator is selected from at least one of 184, ITX, 819, 1173, BDK, BP, TPO, 369, and 907.

[0028] Furthermore, the photoinitiator is selected from cationic initiators, and preferably at least one of sulfonium salts, aryl diazonium salts, diaryl halonium salts, and triaryl halonium salts.

[0029] Furthermore, the first transparent electrode and the second transparent electrode are each independently selected from an ITO conductive layer, a FZO conductive layer, an IZO conductive layer, a GZO conductive layer, an AZO conductive layer, a PEDOT conductive layer, a nano-Ag wire conductive layer, conductive graphene or a nano-Cu wire conductive layer.

[0030] Furthermore, the first transparent electrode and / or the second transparent electrode is covered with an insulating layer.

[0031] Furthermore, the first transparent substrate and the second transparent substrate are glass plates and / or transparent plastic sheets.

[0032] A second aspect of the present invention provides a dimming glass assembly, comprising the packaged light valve as described above, wherein a first glass plate and a second glass plate are respectively disposed on upper and lower surfaces of the light valve.

[0033] In this patent, there is no special restriction on the types of the first glass plate and the second glass plate. Conventional dimming glass assemblies well known to those skilled in the art can be made of transparent glass. They can be ordinary glass such as inorganic glass, organic glass, or functional glass such as UV blocking glass, IR blocking glass, Low-E glass, tempered glass or antibacterial glass, etc. They can also be selected from colored glass such as gray glass and brown glass.

[0034] Further, a first interlayer is provided between the first glass plate and the light valve, and / or a second interlayer is provided between the second glass plate and the light valve.

[0035] In this patent, there is no special restriction on the types of the first interlayer and the second interlayer. They are conventional interlayers for dimming glass components well known to those skilled in the art, and can be EVA films, TPU films, PVB films, or functional films, such as UV-blocking EVA films, UV-blocking TPU films, UV-blocking PVB films, etc. They can also be films with certain colors, such as gray EVA films, gray TPU films, gray PVB films, etc.

[0036] In this patent, there is no special limitation on the method of manufacturing the dimming glass assembly, which can be a conventional laminating method of the dimming glass assembly in the art, such as laminating in a laminator, or laminating in an autoclave or a laminating box / furnace.

[0037] In this solution, a packaging area of ​​a certain width is arranged on at least one side of the light control area of ​​the light valve facing outward. The packaged light valve prepared by coating and cross-linking curing can remove moisture and air in the film during the preparation process, and at the same time isolate the negative influence of moisture and air in the external environment during subsequent use, delay the aging process of the dimming film in a high temperature and high humidity environment, avoid the defect of edge attenuation failure of the dimming film, and significantly extend the service life of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of this patent or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. The drawings described below are only embodiments of this patent. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without creative work.

[0039] Figure 1 A schematic diagram of the structure of the dimming film provided in Example 4 of the present patent along the width direction;

[0040] Figure 2 A schematic diagram of the structure of the dimming film provided in Example 5 of the present patent along the width direction;

[0041] Figure 3 A schematic diagram of the structure of the dimming film provided in Example 5 of the present patent along the width direction, omitting the first transparent substrate and the first transparent conductive layer;

[0042] Figure 4 A schematic diagram of the structure of the dimming film provided in Example 12 of the present patent along the width direction, omitting the first transparent substrate and the first transparent conductive layer;

[0043] Figure 5 A schematic diagram of the structure of the dimming glass assembly provided by this patent;

[0044] Among them: 1—first glass plate; 2—second glass plate; 3—first interlayer; 4—second interlayer; 5—first transparent substrate; 6—second transparent substrate; 7—first transparent conductive layer; 8—second transparent conductive layer; 9—packaging area; 10—light control area. DETAILED DESCRIPTION

[0045] This patent provides a packaged light valve, which forms a packaging area by setting a packaging material on at least one side of the light control area facing outward, and realizes the shaping of the light control area and the packaging area through cross-linking and curing. The film can eliminate moisture and air in the film, and isolate the negative factors such as moisture and air in the external environment, delay the aging process of the dimming film in a high temperature and high humidity environment, solve the problem of edge failure of the dimming film, and significantly extend the service life of the product.

[0046] In order to better illustrate this patent, the following specific examples are provided, including various preparation examples and high temperature and high humidity stability test examples.

[0047] Example 1 Preparation of solid light-controlling particles

[0048] Add 30g of isoamyl acetate solution containing 21.2wt% nitrocellulose (model SS 1 / 4sec), 6g I2, 70g isoamyl acetate and 4g anhydrous CaI2 to a 250mL three-necked round-bottomed glass flask, and heat to 42°C. After I2 is dissolved, add 6g anhydrous methanol, 0.8g distilled water and 4g 2,5-pyrazinedicarboxylic acid dihydrate to the above three-necked round-bottomed glass flask, heat and stir at 42°C for 4 hours, and then cool naturally. The resulting reaction solution is centrifuged at 1350g for 0.5h to remove large particles of product, and then the supernatant is centrifuged at 18000g for 5h, and the supernatant is discarded to obtain solid light-controlling particles. The solid light-controlling particles are fully dispersed with 250mL of isoamyl acetate.

[0049] Example 2 Preparation of liquid suspension medium

[0050] 24.4g dodecyl methacrylate, 2.0g hydroxyethyl methacrylate, 2.3g 1-hexanethiol, and 20mL toluene were added to a 250mL three-necked round-bottomed glass flask. A mechanical stirrer was installed in the middle of the three-necked round-bottomed glass flask, a condenser was connected to one side, and a thermometer was placed on the other side and connected to argon. Before starting heating, argon was passed through the round-bottomed glass flask for about 10 minutes to completely replace the air in the round-bottomed glass flask. The flask was then heated to 60°C. At this temperature, 10mL toluene solution containing 0.20g azobisisobutyronitrile was added to the flask. The reaction temperature was maintained at 60°C for a total of 21 hours, and then the reaction temperature was increased to reflux the reaction solution for 3 hours. Stop the reaction. Then the toluene and unreacted raw materials were removed by a rotary evaporator at 100°C for 3 hours to obtain a liquid suspension medium.

[0051] 40 g of the obtained suspension medium was added to a 250 mL round-bottom glass flask, and the isoamyl acetate dispersion of the solid light-controlling particles prepared in Example 1 was added in batches. The isoamyl acetate was removed by a rotary evaporator, and finally the rotary evaporator was used to continue processing at 80°C for 3 hours to obtain a mixture of a liquid suspension medium containing solid light-controlling particles.

[0052] Example 3 Preparation of polymer matrix precursor

[0053] Add silicon-containing non-crosslinked oligomers: 54g hydroxyl-terminated dimethyldiphenylpolysiloxane and 190mL n-heptane to a 500mL three-necked round-bottomed glass flask. Connect a water separator to a condenser on one side of the three-necked round-bottomed glass flask, install a mechanical stirrer in the middle, and place a thermometer on the other side. Heat the reaction solution in the three-necked round-bottomed glass flask to reflux for 30 minutes, and add a solution of 0.13g stannous octoate dissolved in 10mL n-heptane. Then add a silicon-containing crosslinkable monomer: 3g hydrolyzed 3-acryloxypropylmethyldimethoxysilane dropwise for about 5 minutes. Then react under reflux for 2 hours, and then immediately add 30mL trimethylmethoxysilane as a terminator for the reaction; terminate the reaction for 2 hours, and then quickly cool to room temperature. Mix 50mL ethanol and the cooled reaction solution in a 1L beaker, and then wash the reaction bottle with 30mL heptane and pour it into the beaker. After mixing evenly, add 200mL methanol and stir for 15min. The resulting mixed solution was poured into a 1L separatory funnel and allowed to stand for several hours to separate into layers. The lower layer was taken out and then treated by a rotary evaporator at 70°C for 3 hours to remove low-boiling substances, and finally polysiloxane was obtained as a polymer matrix precursor.

[0054] Hydrolysis reaction: A three-necked round-bottomed glass flask is connected to a condenser on one side, a mechanical stirrer is installed in the middle, and a thermometer is placed on the other side. In a 250mL three-necked round-bottomed glass flask, 0.1g acetic acid, 5.5g water, 44.5g 3-acryloxypropylmethyldimethoxysilane, and 35mL anhydrous ethanol are added in sequence, and the hydrolysis reaction temperature is controlled to 65°C and the reaction is carried out for 5 hours. After the reaction is completed, a rotary evaporator is used to remove the solvent, the remaining water, and the acid to obtain a hydrolysis product.

[0055] Example 4 Preparation of dimming film

[0056] 0.03 g of photoinitiator 819, 3.0 g of the liquid suspension medium mixture containing solid light-controlling particles prepared in Example 2, and 7.0 g of the polymer matrix precursor prepared in Example 3 were mixed evenly to obtain a light-controlling area matrix emulsion.

[0057] 0.03 g of photoinitiator 819 and 10.0 g of acrylate-modified silicone oil were mixed evenly to obtain a matrix emulsion for the encapsulation region.

[0058] Place the PET side of a piece of ITO / PET containing a primer layer on the scraping platform and fix it to the platform by vacuuming. Add the above-mentioned light control area matrix emulsion into the multi-layer co-extrusion die feeding tank A, add the encapsulation area matrix emulsion into the feeding tank B, set the platform moving speed to 1.3cm / s; set the pressure of feeding tank A to 0.4MPa, and the pressure of feeding tank B to 0.3MPa. After the liquid coating is obtained, gently cover another piece of ITO / PET containing a primer layer on the liquid coating by rolling, with the primer side facing the liquid coating, and place the sample under a UV lamp for curing, with a curing intensity of 2000W / m 2 , curing time 15s, the dimming film was obtained, which is recorded as dimming film 4. The structure of the dimming film is shown in Figure 1 The width of the packaging area is 1 cm, and the thickness of the dimming film is 340 μm.

[0059] In this embodiment, a transparent conductive film (transparent electrode) is formed on a plastic sheet substrate.

[0060] The reason why it is set to the width direction is that Figure 1 As shown, this is because roll-to-roll production is adopted during production, and it can be arranged on the roll along the width direction, which is convenient for production. The dimming film with a length of tens of meters or hundreds of meters and a fixed width can be produced along the winding direction of the roll, which is convenient for mass production.

[0061] Example 5 Preparation of dimming film

[0062] 0.03 g of photoinitiator 819, 3.0 g of the liquid suspension medium mixture containing solid light-controlling particles prepared in Example 2, and 7.0 g of the polymer matrix precursor prepared in Example 3 were mixed evenly to obtain a light-controlling area matrix emulsion.

[0063] 0.03 g of photoinitiator Irgacure PAG 290 and 10.0 g of UV type epoxy resin glue were mixed evenly to obtain a matrix emulsion of the encapsulation area.

[0064] Place the PET side of a piece of ITO / PET containing a primer layer on the scraping platform and fix it to the platform by vacuuming. Add the above-mentioned light control area matrix emulsion into the multi-layer co-extrusion die feeding tank A, add the encapsulation area matrix emulsion into feeding tanks B and C, set the platform moving speed to 1.3cm / s; set the pressure of feeding tank A to 0.4MPa, and the pressure of feeding tanks B and C to 0.3MPa. After the liquid coating is obtained, gently cover another piece of ITO / PET containing a primer layer on the liquid coating by rolling, with the primer side facing the liquid coating, and place the sample under a UV lamp for curing, with a curing intensity of 2000W / m 2 The curing time is 15s, and the dimming film is obtained, which is recorded as dimming film 5. The dimming film structure along the width direction is as follows Figure 2 , along the length direction Figure 3 The width of the packaging area is 2 cm, and the thickness of the dimming film is 340 μm.

[0065] In this embodiment, a transparent conductive film (transparent electrode) is formed on a plastic sheet substrate.

[0066] Example 6 Preparation of dimming film

[0067] 0.03 g of photoinitiator 819, 3.0 g of the liquid suspension medium mixture containing solid light-controlling particles prepared in Example 2, and 7.0 g of the polymer matrix precursor prepared in Example 3 were mixed evenly to obtain a light-controlling area matrix emulsion.

[0068] 10.0 g of thermosetting epoxy resin was used as the matrix emulsion in the encapsulation area.

[0069] Place the PET side of a piece of ITO / PET containing a primer layer on the scraping platform and fix it to the platform by vacuuming. Add the above-mentioned light control area matrix emulsion into the multi-layer co-extrusion die feeding tank A, add the encapsulation area matrix emulsion into feeding tanks B and C, set the platform moving speed to 1.3cm / s; set the pressure of feeding tank A to 0.4MPa, and the pressure of feeding tanks B and C to 0.3MPa. After the liquid coating is obtained, gently cover another piece of ITO / PET containing a primer layer on the liquid coating by rolling, with the primer side facing the liquid coating, and place the sample under a UV lamp for curing, with a curing intensity of 2000W / m 2 , curing time 15s, and then put into a vacuum oven at 100°C, heat curing for 1 hour, to obtain a dimming film, recorded as dimming film 6. The width of the packaging area is 3cm, and the thickness of the dimming film is 340μm. The dimming film structure along the width direction is the same as that of Example 5.

[0070] In this embodiment, a transparent conductive film (transparent electrode) is formed on a plastic sheet substrate.

[0071] Example 7 Preparation of dimming film

[0072] 0.03 g of photoinitiator 819, 3.0 g of the liquid suspension medium mixture containing solid light-controlling particles prepared in Example 2, and 7.0 g of the polymer matrix precursor prepared in Example 3 were mixed evenly to obtain a light-controlling area matrix emulsion.

[0073] 0.03 g of photoinitiator TPO and 10.0 g of UV type polyurethane adhesive were mixed evenly to obtain a matrix emulsion of the encapsulation area.

[0074] Place the PET side of a piece of ITO / PET containing a primer layer on the scraping platform and fix it to the platform by vacuuming. Add the above-mentioned light control area matrix emulsion into the multi-layer co-extrusion die feeding tank A, add the encapsulation area matrix emulsion into feeding tanks B and C, set the platform moving speed to 1.3cm / s; set the pressure of feeding tank A to 0.4MPa, and the pressure of feeding tanks B and C to 0.3MPa. After the liquid coating is obtained, gently cover another piece of ITO / PET containing a primer layer on the liquid coating by rolling, with the primer side facing the liquid coating, and place the sample under a UV lamp for curing, with a curing intensity of 2000W / m 2 , curing time 15s, a dimming film was obtained, which was recorded as dimming film 7. The width of the packaging area was 2cm, and the thickness of the dimming film was 340μm. The dimming film structure along the width direction was the same as that of Example 5.

[0075] In this embodiment, a transparent conductive film (transparent electrode) is formed on a plastic sheet substrate.

[0076] Example 8 Preparation of dimming film

[0077] 0.03 g of photoinitiator 819, 3.0 g of the liquid suspension medium mixture containing solid light-controlling particles prepared in Example 2, and 7.0 g of the polymer matrix precursor prepared in Example 3 were mixed evenly to obtain a light-controlling area matrix emulsion.

[0078] 0.03 g of photoinitiator 819 and 10.0 g of the polymer matrix precursor prepared in Example 3 were mixed evenly to obtain an encapsulation region matrix emulsion.

[0079] Place the PET side of a piece of ITO / PET containing a primer layer on the scraping platform and fix it to the platform by vacuuming. Add the above-mentioned light control area matrix emulsion into the multi-layer co-extrusion die feeding tank A, add the encapsulation area matrix emulsion into feeding tanks B and C, set the platform moving speed to 1.3cm / s; set the pressure of feeding tank A to 0.4MPa, and the pressure of feeding tanks B and C to 0.3MPa. After the liquid coating is obtained, gently cover another piece of ITO / PET containing a primer layer on the liquid coating by rolling, with the primer side facing the liquid coating, and place the sample under a UV lamp for curing, with a curing intensity of 2000W / m 2 , curing time 15s, a dimming film was obtained, which was recorded as dimming film 8. The width of the encapsulation area was 2cm, and the thickness of the dimming film was 380μm. The dimming film structure along the width direction was the same as that of Example 5.

[0080] In this embodiment, a transparent conductive film (transparent electrode) is formed on a plastic sheet substrate.

[0081] Example 9 Preparation of dimming film

[0082] 0.03 g of photoinitiator 819, 3.0 g of the liquid suspension medium mixture containing solid light-controlling particles prepared in Example 2, and 7.0 g of the polymer matrix precursor prepared in Example 3 were mixed evenly to obtain a light-controlling area matrix emulsion.

[0083] 0.03 g of photoinitiator 819 and 10.0 g of the polymer matrix precursor prepared in Example 3 were mixed evenly to obtain an encapsulation region matrix emulsion.

[0084] Place the PET side of a piece of ITO / PET containing a primer layer on the scraping platform and fix it to the platform by vacuuming. Add the above-mentioned light control area matrix emulsion into the multi-layer co-extrusion die feeding tank A, add the encapsulation area matrix emulsion into the feeding tank B, set the platform moving speed to 1.3cm / s; set the pressure of feeding tank A to 0.4MPa, and the pressure of feeding tanks B and C to 0.3MPa. After the liquid coating is obtained, gently cover another piece of ITO / PET containing a primer layer on the liquid coating by rolling, with the primer side facing the liquid coating, and place the sample under a UV lamp for curing, with a curing intensity of 2000W / m 2 , curing time 15s, a dimming film was obtained, which was recorded as dimming film 9. The width of the encapsulation area was 2cm, and the thickness of the dimming film was 380μm. The dimming film structure along the width direction was the same as that of Example 4.

[0085] In this embodiment, a transparent conductive film (transparent electrode) is formed on a plastic sheet substrate.

[0086] Example 10 Preparation of dimming film

[0087] 0.03 g of photoinitiator 819, 3.0 g of the liquid suspension medium mixture containing solid light-controlling particles prepared in Example 2, and 7.0 g of the polymer matrix precursor prepared in Example 3 were mixed evenly to obtain a light-controlling area matrix emulsion.

[0088] 0.03 g of photoinitiator 819 and 10.0 g of UV acrylic resin glue were mixed evenly to obtain a matrix emulsion for the encapsulation area.

[0089] Place the PET side of a piece of ITO / PET containing a primer layer on the scraping platform and fix it to the platform by vacuuming. Add the above-mentioned light control area matrix emulsion into the multi-layer co-extrusion die feeding tank A, add the encapsulation area matrix emulsion into feeding tanks B and C, set the platform moving speed to 1.3cm / s; set the pressure of feeding tank A to 0.4MPa, and the pressure of feeding tanks B and C to 0.3MPa. After the liquid coating is obtained, gently cover another piece of ITO / PET containing a primer layer on the liquid coating by rolling, with the primer side facing the liquid coating, and place the sample under a UV lamp for curing, with a curing intensity of 2000W / m 2, curing time 15s, a dimming film was obtained, which was recorded as dimming film 10. The width of the encapsulation area was 2cm, and the thickness of the dimming film was 380μm. The dimming film structure along the width direction was the same as that of Example 5.

[0090] In this embodiment, a transparent conductive film (transparent electrode) is formed on a plastic sheet substrate.

[0091] Example 11 Preparation of dimming film

[0092] 0.03 g of photoinitiator 819, 3.0 g of the liquid suspension medium mixture containing solid light-controlling particles prepared in Example 2, and 7.0 g of the polymer matrix precursor prepared in Example 3 were mixed evenly to obtain a light-controlling area matrix emulsion.

[0093] 0.03 g of photoinitiator Irgacure PAG 290 and 10.0 g of epoxy-modified silicone oil were mixed evenly to obtain a matrix emulsion for the encapsulation region.

[0094] Place the PET side of a piece of ITO / PET containing a primer layer on the scraping platform and fix it to the platform by vacuuming. Add the above-mentioned light control area matrix emulsion into the multi-layer co-extrusion die feeding tank A, add the encapsulation area matrix emulsion into feeding tanks B and C, set the platform moving speed to 1.3cm / s; set the pressure of feeding tank A to 0.4MPa, and the pressure of feeding tanks B and C to 0.3MPa. After the liquid coating is obtained, gently cover another piece of ITO / PET containing a primer layer on the liquid coating by rolling, with the primer side facing the liquid coating, and place the sample under a UV lamp for curing, with a curing intensity of 2000W / m 2 , curing time 15s, a dimming film was obtained, which was recorded as dimming film 11. The width of the packaging area was 2cm, and the thickness of the dimming film was 380μm. The dimming film structure along the width direction was the same as that of Example 5.

[0095] In this embodiment, a transparent conductive film (transparent electrode) is formed on a plastic sheet substrate.

[0096] Example 12 Preparation of dimming film

[0097] 0.03 g of photoinitiator 819, 3.0 g of the liquid suspension medium mixture containing solid light-controlling particles prepared in Example 2, and 7.0 g of the polymer matrix precursor prepared in Example 3 were mixed evenly to obtain a light-controlling area matrix emulsion.

[0098] 0.03 g of photoinitiator 819 and 10.0 g of acrylate-modified silicone oil were mixed evenly to obtain a matrix emulsion for the encapsulation region.

[0099] The matrix emulsion of the light control area is coated on the ITO / PET transparent conductive film with a scraper-type automatic coating machine (MSK-AFA-III, MTI Corporation), and the width of the light control area is 30 cm. Then, the matrix emulsion of the encapsulation area is coated around the light control area with a dispensing machine, and the width of the encapsulation area is 2 cm. Cover the emulsion wet film with another layer of ITO / PET transparent conductive film to obtain an encapsulation wet film containing a light control layer. Then, in a nitrogen atmosphere, use an X200-150 UV curing machine produced by Aventk to cure for 1 minute, and the UV power is 700W / m 2 , a dimming film is obtained, and the thickness of the dimming film is 340 μm, which is recorded as Example 12. The dimming film structure is as follows Figure 4 shown.

[0100] Comparative Example 1 Preparation of dimming film

[0101] 0.03 g of photoinitiator 819, 3.0 g of the mixture of the liquid suspension medium containing solid light-controlling particles prepared in Example 2, and 7.0 g of the polysiloxane prepared in Example 3 were mixed evenly to obtain a light-controlling layer matrix emulsion.

[0102] The matrix emulsion of the light control area was coated on the ITO / PET transparent conductive film using a doctor blade type automatic film coating machine (MSK-AFA-III, MTI Corporation). Another layer of ITO / PET transparent conductive film was covered on the emulsion wet film to obtain a wet film containing the light control layer. Then, in a nitrogen atmosphere, it was cured for 1 minute using an X200-150 UV curing machine produced by Aventk Company with a UV power of 700W / m 2 A dimming film was prepared, which was recorded as dimming film comparative example 1. The thickness of the dimming film was 340 μm.

[0103] In this embodiment, a transparent conductive film (transparent electrode) is formed on a plastic sheet substrate.

[0104] Comparative Example 2 Preparation of dimming film

[0105] The dimming film prepared in Comparative Example 1 was sealed in a U-shape with adhesive tape on all sides.

[0106] Example 13 High temperature and high humidity aging test

[0107] The prepared dimming film was placed in an environmental box at a temperature of 85° C. and a humidity of 85%, and the time when the edge of the dimming region of the dimming film deteriorated was recorded.

[0108] The dimming films prepared in Examples 4 to 12 and Comparative Examples 1 to 2 were subjected to high temperature and high humidity aging tests, and the time when the edges of the dimming films failed was recorded in Table 1. It can be seen that the dimming film of Example 1 without sealing treatment failed at the edge after only 2 hours in the aging test, and the dimming film of Example 2 sealed with tape failed at the edge after 3 hours, and the development time of the dimming film with the sealing area increased was greatly extended. Under the same test conditions, the dimming films prepared in Examples 4 to 12 had edges with encapsulation areas that failed at a time greater than 120 hours, indicating that the introduction of the integrated encapsulation structure significantly improved the environmental stability of the dimming film.

[0109] Table 1 High temperature and high humidity aging test results

[0110]

[0111] The above describes the present invention using a light valve with a transparent plastic sheet as a substrate, namely a dimming film, as an example. Obviously, the concept of the present invention is also fully applicable to a light valve with a glass substrate, namely a dimming glass.

[0112] The above embodiments are only used to help understand the method and core ideas of this patent. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of this patent. Therefore, this patent will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A packaged light valve, comprising: a first transparent substrate, a first transparent electrode formed on a first transparent substrate, The second transparent substrate, a second transparent electrode formed on a second transparent substrate, The first transparent electrode and the second transparent electrode are arranged opposite to each other, and a functional layer is arranged between the first transparent electrode and the second transparent electrode, characterized in that the functional layer is composed of a light control area and a packaging area, and the packaging area is arranged around at least a part of the light control area facing the outside of the light valve, and the width of the packaging area and the thickness of the light valve satisfy the width: thickness = 20~300, and the width is ≤5cm, and the light control area and the packaging area are coated at the same time through a one-time coating process, and the film is formed by a one-time UV curing at the same time.

2. A packaged light valve according to claim 1, characterized in that: A packaging area is arranged on one side of the light control area facing the outer side of the light valve.

3. A packaged light valve according to claim 1, characterized in that: Packaging areas are respectively arranged on two sides of the light control area facing the outer side of the light valve.

4. The packaged light valve according to claim 1, characterized in that: The light control area is completely surrounded by a packaging area facing the outer side of the light valve.

5. The packaged light valve according to claim 1, characterized in that: The light control region is at least one of a suspended particle active layer and a polymer dispersed liquid crystal active layer.

6. The packaged light valve according to claim 1, characterized in that: The packaging area is one or more of epoxy resin, polyurethane resin, acrylic resin, and silicone resin.

7. The packaged light valve according to claim 1, characterized in that: The packaging area is formed by cross-linking and curing one or more of epoxy resin glue that can be cross-linked and cured, polyurethane resin glue that can be cross-linked and cured, acrylic resin glue that can be cross-linked and cured, and silicone oil that can be cross-linked and cured.

8. The packaged light valve according to claim 1, characterized in that: The first transparent electrode and the second transparent electrode are each independently selected from an ITO conductive layer, a FZO conductive layer, an IZO conductive layer, a GZO conductive layer, an AZO conductive layer, a PEDOT conductive layer, a nano-Ag wire conductive layer, conductive graphene or a nano-Cu wire conductive layer.

9. The packaged light valve according to claim 1, characterized in that: The first transparent electrode and / or the second transparent electrode is covered with an insulating layer.

10. The packaged light valve according to claim 1, characterized in that: The first transparent substrate and the second transparent substrate are glass plates and / or transparent plastic sheets.

11. A dimming glass assembly, characterized in that: The light valve comprises a packaged light valve as claimed in any one of claims 1 to 10, wherein a first glass plate and a second glass plate are respectively arranged on upper and lower surfaces of the light valve.

12. The dimming glass assembly according to claim 11, characterized in that: A first interlayer is disposed between the first glass plate and the light valve, and / or a second interlayer is disposed between the second glass plate and the light valve.

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