Dark-state low-light-transmittance dimming glass
By designing a double-layer dimming film sandwich layer, dimming glass with a dark state transmittance of ≤0.5% and a bright state transmittance of ≥15% was prepared, solving the problem of high dark state transmittance and expanding the application range.
Patent Information
- Application Number
- CN202520388113.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-03-06
AI Technical Summary
Existing smart glass has high dark-state transmittance, which limits its application areas. Furthermore, using dark glass and dark film will lead to reduced light transmittance in the bright state and increased costs.
The dimming glass design adopts a double-layer dimming film structure with an adhesive layer sandwiched between each layer. It includes a first transparent substrate, a second transparent substrate, a third transparent substrate, first and second dimming films, and an adhesive layer. It is prepared by lamination process under conditions of 90-130℃ and 0.1-1.5MPa to ensure that the dark state transmittance is ≤0.5% and the bright state transmittance is ≥15%.
This technology significantly reduces the dark-state transmittance of dimming glass while maintaining high bright-state transmittance and a large dimming magnification, thus expanding its application range.
Smart Images
Figure CN223728095U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to light -adjusting glass technical field especially is related to a dark state low transmittance light -adjusting glass. BACKGROUND
[0002] Light -adjusting glass is a light control device, mainly sets up light -adjusting film in two layers of transparent glass, and light -adjusting film type has suspended particle (SPD) light -adjusting film, polymer dispersion liquid crystal (PDLC) light -adjusting film, electrochromic (EC) light -adjusting film, thermochromic light -adjusting film or photochromic light -adjusting film. For suspended particle light -adjusting film, polymer dispersion liquid crystal light -adjusting film, electrochromic light -adjusting film, when the electricity is connected, the arrangement or state of material in light -adjusting film changes, thereby the light transmittance of light -adjusting glass changes, such as from low transmittance converts for high transmittance, or from high transmittance converts for low transmittance. This kind of light -adjusting glass can realize the quick conversion between open state-off state through the action of electric field / current, has the advantages of active regulation light transmittance and energy saving, and the equipment can be used as the intelligent window of spacecraft, high speed train, automobile, building etc. and car rearview mirror, sunglasses, display etc.
[0003] Although light -adjusting glass has been developed successfully for many years, but such light -adjusting glass made of colorless glass and colorless adhesive film, dark state transmittance generally exceeds 0.5%, mainly is that the dark state transmittance of light -adjusting film used in the manufacture of such light -adjusting glass is higher, thereby leading to the shielding light transmittance of light -adjusting glass is poor, thereby limit the application field of this kind of light -adjusting glass. At present, generally through the preparation of dark state transmittance low light -adjusting glass using dark glass and / or dark adhesive film, but the problem brought about can cause the bright state transmittance to reduce significantly, narrows the light -adjusting ratio, in addition dark glass and / or dark adhesive film is expensive, still not effectively solved this problem.
[0004] It can be seen in the prior art, the dark state transmittance of light -adjusting glass is higher. Therefore, a kind of light -adjusting glass with lower dark state transmittance needs to be invented. UTILITY MODEL CONTENT
[0005] In view of the above problems, the utility model aims at providing a dark state low transmittance light -adjusting glass to change the problem of high dark state transmittance of light -adjusting glass.
[0006] The utility model discloses a kind of dark state low light transmittance light modulation glasses, including light modulation glass, the light modulation glass includes first transparent substrate, second transparent substrate, third transparent substrate, first light modulation film being arranged between first transparent substrate and second transparent substrate, second light modulation film being arranged between second transparent substrate and third transparent substrate, first transparent substrate and first light modulation film between being provided with first interlayer, second transparent substrate and first light modulation film between being provided with second interlayer, second transparent substrate and second light modulation film between being provided with third interlayer, fourth interlayer being arranged between third transparent substrate and second light modulation film;The light transmittance of the dark state of the light modulation glass≤0.5%.
[0007] Preferably, the light transmittance of the dark state of the light modulation glass≤0.3%.
[0008] Preferably, the light transmittance of the light state of the light modulation glass≥15%.
[0009] Preferably, the light transmittance of the light state of the light modulation glass≥20%.
[0010] Preferably, the first light modulation film, second light modulation film are each independently selected from suspended particle light modulation film, polymer dispersion liquid crystal light modulation film or electrochromic light modulation film.
[0011] Preferably, the first transparent substrate, second transparent substrate and third transparent substrate are each independently selected from transparent glass plate or transparent plastic plate.
[0012] Preferably, the first interlayer, second interlayer, third interlayer and fourth interlayer are each independently selected from EVA adhesive film, TPU adhesive film or PVB adhesive film.
[0013] Preferably, the light transmittance of the dark state of the first light modulation film, second light modulation film≤2%.
[0014] Preferably, the light transmittance of the dark state of the first light modulation film, second light modulation film≤1.5%.
[0015] Preferably, the first light modulation film and second light modulation film both include first transparent substrate, first transparent conductive layer, light control layer, second transparent conductive layer, second transparent substrate arranged in sequence.
[0016] Preferably, the first transparent substrate and second transparent substrate are transparent plastic sheet.
[0017] Preferably, the first transparent conductive layer and second transparent conductive layer are each independently selected from ITO conductive layer, FZO conductive layer, IZO conductive layer, GZO conductive layer, AZO conductive layer, PEDOT conductive layer, nano Ag line conductive layer, conductive graphene and nano Cu line conductive layer.
[0018] 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.
[0019] The utility model discloses can make the dark state light transmittance of light control glass is less than or equal to 0.5%, changes the problem of the dark state light transmittance of light control glass of the past, simultaneously has higher bright state light transmittance. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is a kind of structural schematic diagram of light control glass of the utility model;
[0021] Figure 2 It is a kind of structural schematic diagram of light control film in the utility model;
[0022] Wherein: 1-light control glass;11-first transparent substrate;12-second transparent substrate;13-third transparent substrate;14-first light control film;15-second light control film;16-first interlayer;17-second interlayer;18-third interlayer;19-fourth interlayer;1a-first transparent base;1b-first transparent conductive layer;1c-light control layer;1d-second transparent conductive layer;1e-second transparent base. DETAILED DESCRIPTION
[0023] The utility model will be further explained in detail in combination with the drawings.
[0024] In the utility model, the following terms used have the meanings as defined below.
[0025] The dark state of light control glass is the state that the light transmittance of light control glass is minimum.
[0026] The bright state of light control glass is the state that the light transmittance of light control glass is maximum.
[0027] The transition state of light control glass is the state that the light transmittance of light control glass is between the dark state and the bright state.
[0028] Transparent conductive film, transparent base and the lamination of transparent conductive layer.
[0029] Light control ratio, the ratio of the bright state light transmittance of light control glass and the dark state light transmittance of light control glass.
[0030] As Figure 1 And Figure 2The utility model provides a kind of dark state low light transmittance light control glass, including light control glass 1, the light control glass 1 includes first transparent substrate 11, second transparent substrate 12, third transparent substrate 13, first light control film 14 being arranged between first transparent substrate 11 and second transparent substrate 12, second light control film 15 being arranged between second transparent substrate 12 and third transparent substrate 13, first transparent substrate 11 and first light control film 14 between being provided with first interlayer 16, second transparent substrate 12 and first light control film 14 between being provided with second interlayer 17, second transparent substrate 12 and second light control film 15 between being provided with third interlayer 18, third transparent substrate 13 and second light control film 15 between being provided with fourth interlayer 19;The light transmittance of dark state of light control glass 1 is less than or equal to 0.5%.
[0031] In the above scheme, the light transmittance of dark state of the light control glass 1 is less than or equal to 0.3%.
[0032] In addition, the light transmittance of bright state of the light control glass 1 is greater than or equal to 15%.
[0033] In addition, the light transmittance of bright state of the light control glass 1 is greater than or equal to 20%.
[0034] Specifically, the first light control film 14 and the second light control film 15 are each independently selected from a suspended particle light control film, a polymer dispersed liquid crystal light control film or an electrochromic light control film.
[0035] Specifically, the first transparent substrate 11, the second transparent substrate 12 and the third transparent substrate 13 are each independently selected from a transparent glass plate or a transparent plastic plate.
[0036] Specifically, the first interlayer 16, the second interlayer 17, the third interlayer 18 and the fourth interlayer 19 are each independently selected from an EVA adhesive film, a TPU adhesive film or a PVB adhesive film.
[0037] Specifically, the light transmittance of dark state of the first light control film 14 and the second light control film 15 is less than or equal to 2%.
[0038] Specifically, the light transmittance of dark state of the first light control film 14 and the second light control film 15 is less than or equal to 1.5%.
[0039] Specifically, the first light control film 14 and the second light control film 15 each include a first transparent substrate 1a, a first transparent conductive layer 1b, a light control layer 1c, a second transparent conductive layer 1d and a second transparent substrate 1e arranged in sequence.
[0040] Specifically, the first transparent substrate 1a and the second transparent substrate 1e are transparent plastic sheets.
[0041] Specifically, the first transparent conductive layer 1b and the second transparent conductive layer 1d are each independently selected from an ITO conductive layer, an 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, and a nano-Cu wire conductive layer.
[0042] Specifically, the light control layer 1c is selected from a suspended particle light control layer, a polymer dispersed liquid crystal light control layer, or an electrochromic light control layer.
[0043] In addition, the preparation method of the dark-state low-transmittance dimming glass in the utility model, comprising the following steps:
[0044] After the layers of the dark-state low-transmittance dimming glass are placed in sequence and then subjected to the laminating treatment, the dimming glass is obtained. The temperature of the laminating treatment is 90-130 DEG C, and the pressure is 0.1-1.5 MPa.
[0045] In the utility model, the types of the first transparent substrate 11, the second transparent substrate 12, and the third transparent substrate 13 are not specially limited, and the conventional transparent glass for dimming glass known to those skilled in the art can be used, which 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.
[0046] In the utility model, the types of the first laminating layer 16, the second laminating layer 17, the third laminating layer 18, and the fourth laminating layer 19 are not specially limited, and the conventional laminating layer for dimming glass known to those skilled in the art can be used, which can be EVA adhesive film, TPU adhesive film, PVB adhesive film, or functional adhesive film such as UV blocking EVA adhesive film, UV blocking TPU adhesive film, and UV blocking PVB adhesive film.
[0047] In the utility model, the manufacturing method of the dimming glass is not specially limited, and the conventional laminating method for dimming glass in the art can be used, such as laminating in a laminator or laminating in a high-pressure kettle or laminating box / furnace.
[0048] The dimming glass of the utility model can realize the change effect of the transmittance of the dimming glass having multiple states by controlling the first dimming film 14 and the second dimming film 15 to be in the dark state or the bright state or the transition state, respectively.
[0049] Finally, the dimming glass prepared by the utility model can be applied to automobile window glass, sky screen glass, or glass curtain wall.
[0050]
Example 1
[0051] Three super white glasses, four EVA interlayer, two suspended particle dimming film with dark state light transmittance of 1.2% are placed in sequence according to the structure of Figure 1 , interlayer lamination is carried out in an autoclave, interlayer lamination temperature is 110℃, interlayer lamination relative pressure is 0.6MPa, interlayer lamination time is 60 minutes, and dimming glass is obtained, and test results are shown in Table 1.
[0052]
Example 2
[0053] Three super white glasses, four EVA interlayer, two suspended particle dimming film with dark state light transmittance of 1.2% are placed in sequence according to the structure of Figure 1 , interlayer lamination is carried out in an autoclave, interlayer lamination temperature is 110℃, interlayer lamination relative pressure is 0.6MPa, interlayer lamination time is 60 minutes, and dimming glass is obtained, and test results are shown in Table 1.
[0054]
Example 1
[0055] The same as
Example 1
[0056]
Example 2
[0057] The same as
Example 1
[0058] Table 1
[0059]
[0060] #60Hz AC effective value, the voltage applied by the two layers of dimming film in the example is equal
[0061] In Table 1, when the voltage is 0V, it is in dark state; when the voltage is 110V, it is in bright state; when the voltage effective value is between 0 and 110V, it is in transition state.
[0062] From the data in Table 1, it can be seen that the dimming glass made by the scheme of the present application has lower dark state light transmittance, higher dimming ratio, and wider dimming range.
[0063] The above is only a preferred embodiment of the present application, and does not limit the present application in any form, any simple modification, equivalent change or modification made according to the technical principle of the present application to the above embodiments still belongs to the scope of the technical scheme of the present application.
Claims
1. A dark state low light transmittance switchable glass, characterized in that: The light-adjustable glass (1) comprises a first transparent substrate (11), a second transparent substrate (12), a third transparent substrate (13), a first light-adjustable film (14) arranged between the first transparent substrate (11) and the second transparent substrate (12), a second light-adjustable film (15) arranged between the second transparent substrate (12) and the third transparent substrate (13), a first interlayer adhesive layer (16) arranged between the first transparent substrate (11) and the first light-adjustable film (14), a second interlayer adhesive layer (17) arranged between the second transparent substrate (12) and the first light-adjustable film (14), a third interlayer adhesive layer (18) arranged between the second transparent substrate (12) and the second light-adjustable film (15), and a fourth interlayer adhesive layer (19) arranged between the third transparent substrate (13) and the second light-adjustable film (15); the light-adjustable glass (1) has a dark-state light transmittance of less than or equal to 0.5%.
2. The dark-state, low-visibility switchable glass of claim 1, wherein: The light-adjustable glass (1) has a dark-state light transmittance of less than or equal to 0.3%.
3. The dark-state, low-visibility switchable glass of claim 1, wherein: The light-adjustable glass (1) has a bright-state light transmittance of greater than or equal to 15%.
4. The dark-state, low-visibility switchable glass of claim 1, wherein: The light-adjustable glass (1) has a bright-state light transmittance of greater than or equal to 20%.
5. The dark-state, low-visibility switchable glass of claim 1, wherein: The first light-adjustable film (14) and the second light-adjustable film (15) are each independently selected from a suspended particle light-adjustable film, a polymer dispersed liquid crystal light-adjustable film, or an electrochromic light-adjustable film.
6. The dark-state, low-visibility switchable glass of claim 1, wherein: The first transparent substrate (11), the second transparent substrate (12), and the third transparent substrate (13) are each independently selected from a transparent glass plate or a transparent plastic plate.
7. The dark-state, low-visibility switchable glass of claim 1, wherein: The first interlayer adhesive layer (16), the second interlayer adhesive layer (17), the third interlayer adhesive layer (18), and the fourth interlayer adhesive layer (19) are each independently selected from an EVA adhesive film, a TPU adhesive film, or a PVB adhesive film.
8. The dark-state, low-visibility switchable glass of claim 1, wherein: The first light-adjustable film (14) and the second light-adjustable film (15) each have a dark-state light transmittance of less than or equal to 2%.
9. The dark-state, low-visibility switchable glass of claim 5, wherein: The first light-adjustable film (14) and the second light-adjustable film (15) each comprise a first transparent substrate (1a), a first transparent conductive layer (1b), a light control layer (1c), a second transparent conductive layer (1d), and a second transparent substrate (1e) arranged in sequence.
10. The dark-state, low- visible light transmittance switchable glass according to claim 9, wherein: The first transparent substrate (1a) and the second transparent substrate (1e) are transparent plastic sheets.
11. The dark-state, low- visible light transmittance switchable glass of claim 9, wherein: The first transparent conductive layer (1b) and the second transparent conductive layer (1d) are each independently selected from an ITO conductive layer, an 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, and a nano-Cu wire conductive layer.
12. The dark-state, low- visible light transmittance switchable glass of claim 9, wherein: The light control layer (1c) is selected from a suspended particle light control layer, a polymer dispersed liquid crystal light control layer, or an electrochromic light control layer.