Dimming film and dimming glass

Abstract

According to the technical scheme, the dimming film comprises a first transparent substrate, a first transparent conducting layer, a light control layer, a second transparent conducting layer and a second transparent substrate which are sequentially arranged in a stacked mode, and is characterized in that at least one part of the area of the edge of the light control layer is shrunk inwards by a certain width; the first transparent substrate and the second transparent substrate in the section of area are mutually connected into a whole, the first transparent conductive layer and / or the second transparent conductive layer in the section of mutually connected area are / is provided with a segmentation line with the width of m at the position where the distance between the first transparent conductive layer and the second transparent conductive layer is d, and the transparent conductive layers on the two sides of the segmentation line are electrically not conducted. The light control layer in the light adjusting film can be sealed, moisture is prevented from entering the light control layer to affect the light adjusting function of the light control area, and d is larger than or equal to X.

Description

Technical Field

[0001] The utility model relates to the technical field of light - modulating films, and in particular to a light - modulating film and a light - modulating glass. Background Art

[0002] The key part of a light - modulating film and a light - modulating glass is the light - control layer. The light - control layer, such as a suspended - particle light - control layer, a polymer - dispersed liquid - crystal light - control layer, or an electrochromic light - control layer, is very sensitive to humidity, air, etc. in the environment. Long - term exposure to a high - temperature and humid environment will cause the light - modulating film to have a defect of light - modulation failure starting from the four peripheral edges, and also cause a decrease in the stability of the light - modulating film. Therefore, the light - control area needs very strict protection.

[0003] For this reason, Patent CN103003746A discloses a technical solution of pasting a sealing tape on the peripheral edge part of a light - modulating film. Before pasting the tape, it is necessary to remove moisture inside the film first. This solution still has problems such as complex operation, incomplete removal of moisture inside the film, and poor sealing effect. Therefore, it is necessary to provide a light - modulating film preparation technology that is simpler and easier to operate and has a good sealing effect. Summary of the Utility Model

[0004] Aiming at the above problems, the utility model aims to provide a light - modulating film and a light - modulating glass, which can seal the light - control layer inside the light - modulating film to prevent moisture from entering the light - control layer and affecting the light - modulation function of the light - control area.

[0005] The technical solution of the utility model is a light - modulating film, which includes a first transparent substrate, a first transparent conductive layer, a light - control layer, a second transparent conductive layer, and a second transparent substrate that are sequentially stacked. It is characterized in that: at least a part of the area at the edge of the light - control layer has an inner - contracted width of X. The first transparent substrate and the second transparent substrate in this section are connected into one body. The first transparent conductive layer and / or the second transparent conductive layer in this connected section are provided with a dividing line with a width of m at a position with a distance of d from the edge of the light - modulating film. The transparent conductive layers on both sides of the dividing line are not electrically conductive.

[0006] Preferably, the width m of the dividing line satisfies 2μm≤m≤5mm.

[0007] Preferably, the distance d from the dividing line to the edge of the light - modulating film satisfies 2mm≤d≤50mm.

[0008] Preferably, the inner - contracted width is X, and X satisfies 2mm≤X≤20mm.

[0009] Preferably, d≥X.

[0010] Preferably, the connection area of the first transparent substrate and the second transparent substrate at the edge of the light - modulating film surrounds the light - modulating film to form a closed area.

[0011] Preferably, the dividing line encloses a closed area at a position with a distance of d from the edge of the light-dimming film.

[0012] Preferably, the light control layer is selected from a suspended particle light control layer, a polymer dispersed liquid crystal light control layer, or an electrochromic light control layer.

[0013] Another technical solution of the present invention is a light-dimming film, which includes a first transparent substrate, a first transparent conductive layer, a light control layer, a second transparent conductive layer, and a second transparent substrate that are sequentially stacked. The feature is that: at least a part of the regions at the edges of the first transparent conductive layer, the light control layer, and the second transparent conductive layer are inwardly contracted by a width of X, and the first transparent substrate and the second transparent substrate in this section are connected into one body.

[0014] Preferably, the widths of the inward contractions of at least a part of the regions at the edges of the first transparent conductive layer, the light control layer, and the second transparent conductive layer may not be equal.

[0015] Preferably, the inward contraction width is X, and X satisfies 2 mm ≤ X ≤ 20 mm.

[0016] In the above solution, the connection region of the first transparent substrate and the second transparent substrate at the edge of the light-dimming film surrounds the light-dimming film to form a closed area.

[0017] The present invention provides a light-dimming glass, which is characterized in that: it includes a first glass plate and a second glass plate, and the above-mentioned light-dimming film is arranged between the first glass plate and the second glass plate.

[0018] Preferably, a first interlayer is arranged between the first glass plate and the light-dimming film, and / or a second interlayer is arranged between the second glass plate and the light-dimming film.

[0019] The present invention can seal the light control layer in the light-dimming film to prevent moisture from entering the light control layer and affecting the light control function of the light control area. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of a light-dimming film of the present invention;

[0021] Figure 2 It is a schematic cross-sectional structural diagram of the inward contraction of the light control layer of the light-dimming film of the present invention;

[0022] Figure 3 For Figure 2 A schematic cross-sectional structural diagram of the state where the first transparent substrate and the second transparent substrate are connected into one body;

[0023] Figure 4 For Figure 3 A schematic cross-sectional structural diagram after setting the dividing line;

[0024] Figure 5 is Figure 4 a schematic cross-sectional structure diagram of the corresponding dimming glass;

[0025] Figure 6 is a schematic cross-sectional structure diagram of the light control layer of the dimming film of the present utility model being recessed, and the first transparent conductive layer and the second transparent conductive layer being recessed;

[0026] Figure 7 is Figure 6 a schematic cross-sectional structure diagram of the first transparent substrate and the second transparent substrate being connected into an integrated state;

[0027] Figure 8 is Figure 7 a schematic cross-sectional structure diagram of the corresponding dimming glass;

[0028] Wherein: 1 - the first transparent substrate; 2 - the first transparent conductive layer; 3 - the light control layer; 4 - the second transparent conductive layer; 5 - the second transparent substrate; 6 - the dividing line; 7 - the first glass plate; 8 - the second glass plate; 9 - the first interlayer; 10 - the second interlayer. Specific embodiments

[0029] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0030] As Figures 1 to 4 shown, the present utility model provides a dimming film, which includes a first transparent substrate 1, a first transparent conductive layer 2, a light control layer 3, a second transparent conductive layer 4, and a second transparent substrate 5 that are sequentially stacked. At least a part of the edge region of the light control layer 3 is recessed by a width of X. The first transparent substrate 1 and the second transparent substrate 5 in this section are connected into an integrated body. The first transparent conductive layer 2 and / or the second transparent conductive layer 4 in this connected section are provided with a dividing line 6 with a width of m at a position d away from the edge of the dimming film. The transparent conductive layers on both sides of the dividing line 6 are not electrically conductive.

[0031] In the above solution, the width m of the dividing line 6 satisfies 2μm ≤ m ≤ 5mm.

[0032] Specifically, the distance of the dividing line 6 from the edge of the dimming film is d, and d satisfies 2mm ≤ d ≤ 50mm.

[0033] Specifically, the recessed width is X, and X satisfies 2mm ≤ X ≤ 20mm.

[0034] Specifically, where d ≥ X.

[0035] In addition, the connection area of the first transparent substrate 1 and the second transparent substrate 5 at the edge of the dimming film surrounds the dimming film to form a closed area.

[0036] Specifically, the dividing line 6 encloses a closed area at a position with a distance of d from the edge of the light-dimming film.

[0037] Specifically, the light control layer 3 is selected from a suspended particle light control layer, a polymer dispersed liquid crystal light control layer, or an electrochromic light control layer.

[0038] Such as Figure 6 And Figure 7 As shown in [figures], the present invention provides a light-dimming film, which includes a first transparent substrate 1, a first transparent conductive layer 2, a light control layer 3, a second transparent conductive layer 4, and a second transparent substrate 5 that are sequentially stacked. At least a part of the regions at the edges of the first transparent conductive layer 2, the light control layer 3, and the second transparent conductive layer 4 are inwardly reduced in width by X, and the first transparent substrate 1 and the second transparent substrate 5 in this section are connected into one body.

[0039] Specifically, the widths by which at least a part of the regions at the edges of the first transparent conductive layer 2, the light control layer 3, and the second transparent conductive layer 4 are inwardly reduced may not be equal.

[0040] Specifically, the inward reduction width is X, and X satisfies 2 mm ≤ X ≤ 20 mm.

[0041] Specifically, the connection region between the first transparent substrate 1 and the second transparent substrate 5 at the edge of the light-dimming film surrounds the light-dimming film to form a closed area.

[0042] Such as Figure 5 Or Figure 8 As shown in [figures], the present invention provides a light-dimming glass, which includes a first glass plate 7 and a second glass plate 8, and the above-mentioned light-dimming film disposed between the first glass plate 7 and the second glass plate 8.

[0043] In addition, a first interlayer 9 is disposed between the first glass plate 7 and the light-dimming film, and / or a second interlayer 10 is disposed between the second glass plate 8 and the light-dimming film.

[0044] The method for preparing the light-dimming glass is characterized by including:

[0045] Stacking each layer according to the structure of the light-dimming glass and then performing interlayer pressing treatment to obtain the light-dimming glass.

[0046] Specifically, there are no special restrictions on the types of the first glass plate and the second glass plate, and they can be conventional glass plates for light-dimming glass well-known to those skilled in the art. They can be ordinary glass such as inorganic glass and organic glass, and the organic glass such as PC board and PMMA board, etc., or they can be functional glass such as UV-blocking glass, IR-blocking glass, Low-E glass, tempered glass, or antibacterial glass, etc., and can also be selected from colored glass such as gray glass and brown glass.

[0047] Specifically, there are no special restrictions on the type of the interlayer material, and it can be a conventional adhesive film for dimming glass well-known to those skilled in the art, such as an EVA adhesive film, a TPU adhesive film or a PVB adhesive film; it can also be a functional adhesive film, such as a UV-blocking EVA adhesive film, a UV-blocking TPU adhesive film or a UV-blocking PVB adhesive film, an infrared-blocking EVA adhesive film, an infrared-blocking TPU adhesive film or an infrared-blocking PVB adhesive film; or an EVA adhesive film, a TPU adhesive film or a PVB adhesive film with a color can also be selected.

[0048] Specifically, the interlayer material is selected from at least one of an EVA adhesive film, a TPU adhesive film and a PVB adhesive film.

[0049] Specifically, there are no special restrictions on the method of laminating treatment for preparing the dimming glass, and it can be a conventional laminating method for dimming glass in the art, such as laminating in a laminator, or laminating in an autoclave or a laminating box / furnace.

[0050] Specifically, the temperature of the laminating treatment is 90~130 °C, the relative laminating pressure is 0.1~1.2 MPa, and the laminating time is 30~120 minutes.

[0051] In the specific implementation process of the present invention, first, by means of a mechanical knife, laser, etc. on the dimming film, the light control layer 3 is dug out at the edge of the dimming film, so that at least a part of the area at the edge of the light control layer 3 is shrunk by a certain width, and then by means of etching, a dividing line 6 with a width of m is formed at a distance d from the edge of the dimming film on the first transparent conductive layer 2 and / or the second transparent conductive layer 4.

[0052] Or in the specific implementation process of the present invention, first, by means of etching, a dividing line 6 with a width of m is formed at a distance d from the edge of the dimming film on the first transparent conductive layer 2 and / or the second transparent conductive layer 4, and then by means of a mechanical knife, laser, etc. on the dimming film, the light control layer 3 is dug out at the edge of the dimming film, so that at least a part of the area at the edge of the light control layer 3 is shrunk by a certain width.

[0053] The etching method is ion beam etching (IBE), deep silicon etching (DRIE), reactive ion etching (RIE), focused ion beam etching (FIB), inductively coupled (ICP) plasma etching, microwave plasma etching, laser etching or chemical etching.

[0054] Laser internal etching is preferred, and the specific internal etching method is as follows:

[0055] The laser internal etching takes the whole dimming film as a whole, and etches the dividing line 6 on the first transparent conductive layer 2 from the side of the first transparent substrate 1 to the side of the first transparent conductive layer 2, and the dividing line 6 penetrates through the first transparent conductive layer 2; or etches the dividing line 6 on the second transparent conductive layer 4 from the side of the second transparent substrate 5 to the side of the second transparent conductive layer 4, and the dividing line 6 penetrates through the second transparent conductive layer 4.

[0056] The basic principle of laser internal etching is to focus a low-power laser with high beam quality (usually ultraviolet laser or fiber laser) on an extremely small light spot, forming a high power density at the light spot and making the light spot located on the transparent conductive layer, so that the transparent conductive layer at the light spot is instantly heated, while the transparent substrate and the transparent conductive layer outside the light spot are not heated. In this way, a large stress is generated between the transparent conductive layer at the light spot and the transparent substrate and the transparent conductive layer outside the light spot. The transparent conductive layer at the light spot is delaminated and peeled off due to stress induction, forming a dividing line, so that the transparent conductive layers on both sides of the dividing line are electrically non-conductive. Processed in a non-contact laser manner, it has high flexibility, high speed, no noise, a small heat-affected area, and can be focused to an extremely small light spot at the laser wavelength level. The transparent conductive layer is etched along a pre-designed route through the transparent substrate of the dimming film to obtain a "cold processing" effect without carbonization. The present utility model uses a nanosecond laser pulse with a wavelength of 355 nanometers and 50KHz to perform internal etching on the dimming film.

[0057] Then, by heating the dimming film, the first transparent substrate 1 and the second transparent substrate 5 at the edge of the light control layer are melted and fused together to form a sealed structure, which has a good water vapor barrier effect.

[0058] At least a part of the edges of the first transparent conductive layer 2, the light control layer 3, and the second transparent conductive layer 4 can also be recessed by a certain width by means of a mechanical knife, laser, etc., to dig out the first transparent conductive layer 2, the light control layer 3, and the second transparent conductive layer 4 at the edge of the dimming film.

[0059] Of course, during the coating process of the dimming film, a structure in which at least a part of the edge of the light control layer 3 is recessed by a certain width, or a structure in which at least a part of the edges of the first transparent conductive layer 2, the light control layer 3, and the second transparent conductive layer 4 are recessed by a certain width can also be formed.

[0060] Of course, at least a part of the edges of the first transparent conductive layer 2, the light control layer 3, and the second transparent conductive layer 4 are recessed by a certain width, and the recessed widths of the three can be unequal.

[0061] Heating the first transparent substrate 1 and the second transparent substrate 5 at the edge of the dimming film to make them melt and connect into one body can adopt a high-frequency induction heating process or a high-temperature conduction / radiation heating process for heating.

[0062] The present utility model tests the water vapor barrier effect of the dimming glass through a boiling water experiment.

[0063] Boiling water test experiment: After boiling the prepared dimming glass in hot water at 100 °C for 10 hours, visually check whether there are any changes in the appearance of the dimming glass. Poor water vapor barrier effect will cause different degrees of dimming failure areas around the dimming film. Use a ruler to measure the width of the dimming failure area. The larger the width value of the dimming failure area, the worse the water vapor barrier performance.

[0064]

Example 1

[0065] As Figure 4 shown, a rectangular suspended particle dimming film has the light control layer retracted on only one side. The retraction width X is 5 mm, the width m of the dividing line is 50 μm, and the distance d from the dividing line to the edge of the dimming film is 10 mm.

[0066] Specific implementation process: First, use a laser to internally etch a dividing line with a width of 50 μm at a distance of 10 mm from the edge on one side of the suspended particle dimming film. Then, use a mechanical knife to dig out a light control layer with a width of 5 mm on this side, clean up the residue of the light control layer, and heat and press the first transparent substrate and the second transparent substrate on this side through a heating plate at 150 °C to make them melt and connect into one body. The treatment time is 10 minutes.

[0067] Place two ultra-clear glasses, two EVA interlayers, and 1 layer of dimming film in the Figure 5 structure and stack them layer by layer in sequence, and perform lamination in an autoclave. The lamination temperature is 110 °C, the relative lamination pressure is 0.6 MPa, and the lamination time is 120 minutes.

[0068] The results of the boiling water test are shown in Table 1.

[0069]

Example 2

[0070] Same as [Example 1], only a polymer dispersed liquid crystal dimming film is used.

[0071] The results of the boiling water test are shown in Table 1.

[0072] Table 1

[0073] Embodiment Width of the failure zone on the sealed side Width of the failure zone on the non-sealed side Embodiment 1 0 mm 6 mm Embodiment 2 0 mm 7 mm

[0074] As can be seen from the results in Table 1, in [Example 1], after boiling in hot water at 100 °C for 10 hours, there is no obvious failure area on the sealed side of the dimming film; while on the non-sealed side, the width of the dimming failure area is about 6 mm. The effect of [Example 2] is equivalent to that of [Example 1]. It can be seen that the technical means of setting the transparent substrate seal has a significant effect on preventing the harm of water vapor to the dimming film.

[0075] The above are only the preferred embodiments of the present utility model, and do not impose any formal restrictions on the utility model. Any simple modifications, equivalent changes or decorations made to the above embodiments based on the technical principles of the present utility model still fall within the scope of the technical solutions of the present utility model.

Claims

1. A dimming film, comprising a first transparent substrate (1), a first transparent conductive layer (2), a light control layer (3), a second transparent conductive layer (4) and a second transparent substrate (5) which are stacked in sequence, characterized in that: At least a portion of the edge of the light control layer (3) is indented with a width of X, the first transparent substrate (1) and the second transparent substrate (5) in this section are interconnected as a whole, and a dividing line (6) with a width of m is provided at a distance d from the edge of the light control film on the first transparent conductive layer (2) and / or the second transparent conductive layer (4) in this interconnected section, and the transparent conductive layers on both sides of the dividing line (6) are electrically non-conductive.

2. The dimming film according to claim 1, characterized in that: The width m of the dividing line (6) satisfies 2μm≤m≤5mm.

3. The dimming film according to claim 1, characterized in that: The distance between the dividing line (6) and the edge of the dimming film is d, and d satisfies 2mm≤d≤50mm.

4. The dimming film according to claim 1, characterized in that: The retracted width is X, and X satisfies 2mm≤X≤20mm.

5. The dimming film according to claim 1, characterized in that: d≥X.

6. The dimming film according to claim 1, characterized in that: The connection area of ​​the first transparent substrate (1) and the second transparent substrate (5) at the edge of the dimming film surrounds the dimming film to form a closed area.

7. The dimming film according to claim 1, characterized in that: The dividing line (6) forms a closed area around the edge of the dimming film at a distance d.

8. The dimming film according to claim 1, characterized in that: The light control layer (3) is selected from a suspended particle light control layer, a polymer dispersed liquid crystal light control layer, or an electrochromic light control layer.

9. A dimming film, comprising a first transparent substrate (1), a first transparent conductive layer (2), a light control layer (3), a second transparent conductive layer (4) and a second transparent substrate (5) which are stacked in sequence, characterized in that: At least a portion of the edge of the first transparent conductive layer (2), the light control layer (3) and the second transparent conductive layer (4) has a shrinkage width of X, and the first transparent substrate (1) and the second transparent substrate (5) in this region are connected to each other as a whole.

10. The dimming film according to claim 9, characterized in that: The retracted width is X, and X satisfies 2mm≤X≤20mm.

11. The dimming film according to claim 9, characterized in that: The connection area of ​​the first transparent substrate (1) and the second transparent substrate (5) at the edge of the dimming film surrounds the dimming film to form a closed area.

12. A dimming glass, characterized in that: It comprises a first glass plate (7) and a second glass plate (8), and a dimming film according to any one of claims 1 to 11 arranged between the first glass plate (7) and the second glass plate (8).

13. The switchable glass according to claim 12, characterized in that: A first interlayer (9) is provided between the first glass plate (7) and the dimming film, and / or a second interlayer (10) is provided between the second glass plate (8) and the dimming film.

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