Disclosure of Invention
The embodiment of the application provides the dimming glass and the preparation method thereof, which can solve the problems of uneven dimming caused by poor local black spots of the existing dimming glass and lower yield when the dimming glass is manufactured.
In order to achieve the above object, the technical solution of the embodiment of the present invention is:
In a first aspect, the embodiment of the invention provides dimming glass, which comprises a first glass substrate, a first metal layer, a first orientation layer, a dye liquid crystal layer, a second orientation layer, a second metal layer, a second glass substrate and a ring glue layer, wherein the first metal layer is arranged on the first glass substrate, the first orientation layer is arranged on the first metal layer to obtain a first plywood, the second metal layer is arranged on the second glass substrate, the second orientation layer is arranged on the second metal layer to obtain a second plywood, the dye liquid crystal layer is poured between the first metal layer of the first plywood and the second metal layer of the second plywood, the ring glue layer is arranged on the outer ring of the dye liquid crystal layer, the ring glue layer is used for bonding the first plywood and the second plywood, the thicknesses of the first metal layer and the second metal layer are 5 nm-20 nm, and the used metal has a near infrared reflection effect.
With reference to the first aspect, in a possible implementation manner, the metal used for the first metal layer is silver, gold or aluminum.
With reference to the first aspect, in a possible implementation manner, the second glass substrate comprises toughened glass and thin glass which are arranged in sequence, and PVB bonding capable of isolating ultraviolet rays is adopted between the toughened glass and the thin glass.
With reference to the first aspect, in a possible implementation manner, the second glass substrate includes two layers of toughened glass, and PVB bonding capable of isolating ultraviolet light is adopted between the two layers of toughened glass.
With reference to the first aspect, in a possible implementation manner, the dimming glass further comprises an insulating layer, wherein the insulating layer is arranged on one side of the second glass substrate away from the second metal layer.
With reference to the first aspect, in a possible implementation manner, the heat insulation layer is made of indium tin oxide or tin oxide.
With reference to the first aspect, in one possible implementation manner, the thickness of the thermal insulation layer is 50 nm-200 nm.
With reference to the first aspect, in one possible implementation manner, the sealant layer includes a first sealant layer and a second sealant layer, where the first sealant layer and the second sealant layer are sequentially disposed on an outer ring of the dye liquid crystal layer, and the first sealant layer is close to the dye liquid crystal layer.
In a second aspect, another embodiment of the present invention provides a method for preparing a light-adjusting glass, which is used for preparing the light-adjusting glass, including:
A first metal layer is arranged on a first glass substrate, and a first orientation layer is arranged on the first metal layer to obtain a first plywood;
A second metal layer is arranged on the second glass substrate, and a second orientation layer is arranged on the second metal layer to obtain a second plywood;
and pouring the dye liquid crystal layer between the first metal layer of the first plywood and the second metal layer of the second plywood, and arranging the annular glue layer on the outer ring of the dye liquid crystal layer to bond the first plywood and the second plywood.
One or more technical solutions provided in the embodiments of the present invention at least have the following technical effects or advantages:
In the dimming glass provided by the embodiment of the application, the first metal layer is arranged on the first glass substrate, and the first orientation layer is arranged on the first metal layer to obtain the first plywood. And arranging a second metal layer on the second glass substrate, and arranging a second orientation layer on the second metal layer to obtain a second plywood. The dimming glass provided by the embodiment of the application is prepared by firstly preparing a first plywood and a second plywood, then pouring a dye liquid crystal layer between the first plywood and the second plywood, and finally bonding the first plywood and the second plywood by arranging a ring glue layer on the outer ring of the dye liquid crystal layer. According to the dimming glass disclosed by the embodiment of the application, as the liquid crystal dye layer is poured between the first and second manufactured plywood, the first and second glass substrates are directly used as the substrates (the thin glass substrates of the existing dimming glass functional layer are replaced, the step of re-laminating after the existing dimming glass is manufactured with the functional layer is omitted), and the pressure is not applied to the dye liquid crystal layer in the bonding process of the first and second plywood, so that the difference of box thickness caused by uneven lamination stress is avoided, uniform dispersion of liquid crystal is realized, the situation of poor local black spots is avoided, the dimming is uniform, the manufacturing process is simple and easy to operate, and the yield is improved when the dimming glass is manufactured. Through setting up the ring glue layer with first plywood and second plywood bonding, the glass assembly of adjusting luminance is laminated glass to with adjusting luminance in the function integration to this laminated glass, the security is high. Compared with the existing dimming glass, the dimming glass provided by the embodiment of the application has the advantages that the number of layers of the first thin glass, the second thin glass, PVB (polyvinyl butyral) bonding the first thin glass and the second thin glass is reduced, so that the overall thickness is reduced, the requirement that the thickness of the assembly is less than or equal to 5mm can be met, and the thickness can be flexibly changed according to the requirement. According to the embodiment of the application, the thicknesses of the first metal layer and the second metal layer are 5-20 nm, the used metal has a near infrared reflection effect, and the first metal layer and the second metal layer can reflect near infrared light and transmit visible light, so that adjustment based on a visible light wave band and blocking of the near infrared light are realized, and the sun-shading and heat insulation effects are realized. Meanwhile, the first metal layer and the second metal layer can replace the existing ITO layer to serve as electrode layers, have better conductive effect, are electrically connected with a flexible circuit board (English: FPC) and can drive liquid crystal to deflect when being electrified, so that quick response of dimming glass is realized, signal difference between an output end and an input end of the dimming glass and delay of output signals are reduced, and the dimming effect is more uniform on large-size dimming glass. The first metal layer and the second metal layer are thinner, if the dimming glass is easily oxidized in the air, the dye liquid crystal layer is poured between the first metal layer and the second metal layer, and the annular glue layer is arranged on the outer periphery of the dye liquid crystal layer, so that the first metal layer and the second metal layer cannot be in contact with the outside, the metal layer can be isolated from water and oxygen, and the sealing of the first metal layer and the second metal layer cannot be oxidized without adding a protective layer for preventing the oxidation of the metal layer.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the embodiments of the present invention and simplify description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The terms "mounted," "connected," "coupled," and "connected" are used in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, or indirectly connected via an intermediate medium, or may be in communication with the interior of two elements. The specific meaning of the above terms in the embodiments of the present invention will be understood by those of ordinary skill in the art according to specific circumstances.
Referring to fig. 1 and 2, an embodiment of the invention provides a dimming glass, which comprises a first glass substrate 1, a first metal layer 2, a first alignment layer 3, a dye liquid crystal layer 5, a second alignment layer 6, a second metal layer 7, a second glass substrate 8 and a ring glue layer 4.
The first metal layer 2 is provided on the first glass substrate 1, and the first metal layer 2 may be provided on the first glass substrate 1 by a sputtering method. A first alignment layer 3 is provided on the first metal layer 2 to obtain a first laminate. The second metal layer 7 is provided on the second glass substrate 8, and the second metal layer 7 may be provided on the second glass substrate 8 by a sputtering method. A second metal layer 7 is provided with a second alignment layer 6 to obtain a second laminate. A dye liquid crystal layer 5 is poured between the first metal layer 2 of the first plate and the second metal layer 7 of the second plate. The dye liquid crystal has the advantages of high response speed, low haze, light modulation of neutral color and good display effect. In actual mounting, the first ply is located on the outside of the chamber and the outside of the first glass substrate 1 is in contact with air, and the second ply is located on the inside of the chamber and the outside of the second glass substrate 8 is in contact with air.
The outer ring of the dye liquid crystal layer 5 is provided with a ring glue layer 4, and the ring glue layer 4 is used for bonding the first plywood and the second plywood. Specifically, the layer of photoresist 4 is used to bond the first metal layer 2 and the second metal layer 7. The thicknesses of the first metal layer 2 and the second metal layer 7 are 5 nm-20 nm, and the used metal has a near infrared reflection effect.
The existing dimming glass is prepared by firstly preparing a functional layer comprising a first thin glass, a first ITO layer, a first orientation layer, a liquid crystal layer, a second orientation layer, a second ITO layer and a second thin glass, and then combining the outer sides of the first thin glass and the second thin glass of the functional layer with one piece of toughened glass through PVB respectively to form the dimming glass.
Compared with the existing light-adjusting glass, the light-adjusting glass provided by the embodiment of the application has the advantages that the first metal layer 2 is arranged on the first glass substrate 1, and the first orientation layer 3 is arranged on the first metal layer 2 to obtain the first plywood in actual manufacturing. A second metal layer 7 is provided on the second glass substrate 8, and a second alignment layer 6 is provided on the second metal layer 7 to obtain a second laminate. The dimming glass provided by the embodiment of the application is prepared by firstly preparing a first plywood and a second plywood, then pouring a dye liquid crystal layer 5 between the first plywood and the second plywood, and finally bonding the first plywood and the second plywood by arranging a ring glue layer 4 on the outer ring of the dye liquid crystal layer 5. According to the dimming glass disclosed by the embodiment of the application, as the liquid crystal dye layer is poured between the first and second manufactured plywood, the first and second glass substrates 1 and 8 are directly used as the substrates (the thin glass substrate of the existing dimming glass functional layer is replaced, the step of re-laminating after the existing dimming glass is manufactured with the functional layer is omitted), and the pressure is not applied to the dye liquid crystal layer 5 in the bonding process of the first and second plywood, so that the difference of box thickness caused by uneven lamination stress is avoided, uniform dispersion of liquid crystal is realized, the situation of poor local black spots is avoided, the dimming is uniform, the preparation process is simple and easy to operate, and the yield is improved when the dimming glass is manufactured. Through setting up ring glue layer 4 with first plywood and second plywood bonding, the glass assembly of adjusting luminance is laminated glass to with adjusting luminance in the function integration to this laminated glass, the security is high. Compared with the existing dimming glass, the dimming glass provided by the embodiment of the application has the advantages that the number of layers of the first thin glass, the second thin glass, PVB (polyvinyl butyral) bonding the first thin glass and the second thin glass is reduced, so that the overall thickness is reduced, the requirement that the thickness of the assembly is less than or equal to 5mm can be met, and the thickness can be flexibly changed according to the requirement. According to the embodiment of the application, the thicknesses of the first metal layer 2 and the second metal layer 7 are 5-20 nm, the used metal has a near infrared reflection effect, and the first metal layer 2 and the second metal layer 7 can reflect near infrared light and transmit visible light, so that adjustment based on a visible light wave band and blocking of the near infrared light are realized, and the sun-shading and heat insulation effects are realized. Meanwhile, the first metal layer 2 and the second metal layer 7 can replace the existing ITO layer to serve as electrode layers, have better conductive effect, are electrically connected with a flexible circuit board 10 (English: FPC) and can drive liquid crystal to deflect when being electrified, so that quick response of dimming glass is realized, signal difference between an output end and an input end of the dimming glass and delay of output signals are reduced, and the dimming effect is more uniform on large-size dimming glass. The first metal layer 2 and the second metal layer 7 are thinner, if the dimming glass is easily oxidized in the air, the dye liquid crystal layer 5 is poured between the first metal layer 2 and the second metal layer 7, and the annular glue layer 4 is arranged on the outer ring of the dye liquid crystal layer 5, so that the first metal layer 2 and the second metal layer 7 cannot be contacted with the outside, the metal layers can be isolated from water and oxygen, and the sealing of the first metal layer 2 and the second metal layer 7 can be realized without adding a protective layer for preventing the oxidation of the metal layers.
The dimming glass provided by the embodiment of the application can be applied to the positions of side windows, skylights and the like of automobiles.
Optionally, the metal used in the first metal layer 2 is silver, gold or aluminum, which has a good near infrared reflection effect.
In practice, only tempered glass may be used for the second glass substrate 8.
The first glass substrate 1 and the second glass substrate 8 of the light control glass are bonded, and if the light control glass breaks, the light control glass falls into the vehicle, with a high risk. The second glass substrate 8 includes tempered glass 81 and thin glass 83 which are disposed in this order. The toughened glass 81 and the thin glass 83 are bonded by PVB82 (Chinese: polyvinyl butyral) capable of isolating ultraviolet rays, so that the toughened glass 81 and the thin glass 83 form laminated glass, the strength and the safety of the second glass substrate 8 can be improved, and the PVB82 capable of isolating ultraviolet rays is adopted, so that the ultraviolet cut-off effect of the light-adjusting glass can be further isolated, and the dye liquid crystal is protected.
Further, the second glass substrate 8 includes two layers of tempered glass. PVB bonding capable of isolating ultraviolet rays is adopted between the two layers of toughened glass. The two layers of toughened glass have good strength, and before the two layers of toughened glass are bonded into the second glass substrate 8, the toughened glass can be shaped, such as bent by a certain radian, so that the second glass substrate 8 can have more shapes.
After the first metal layer 3 of the first laminate and the second metal layer 6 of the second laminate are bonded, the tempered glass 81 of the second glass substrate 8 may be bonded to the thin glass 83 or the other tempered glass, or the tempered glass 81 of the second glass substrate 8 may be bonded to the thin glass 83 or the other tempered glass first, and then the first metal layer 3 of the first laminate and the second metal layer 6 of the second laminate may be bonded.
The functional layer of the existing light-adjusting glass is manufactured in advance, for the occasion that the light-adjusting glass needs to have a certain radian, the toughened glass bonded with the functional layer is molded into the required radian, then the functional layer is clamped in the middle, the first thin glass and the second thin glass of the functional layer are used as substrates, the first thin glass and the second thin glass are not flexible films and are plane, the shape is fixed and can not be bent at will, and then the radian of the light-adjusting glass can be made smaller, so that the functional layer can be bonded between two toughened glass. If the radian required by the light-adjusting glass is large or complex, the thin glass adhered to the functional layer between the two pieces of toughened glass cannot meet the deformation of the requirement, and even if the thin glass is barely met, the thin glass is easy to break, and the yield is low. Moreover, the functional layer is forced to bend, which tends to cause defective liquid crystal display in the functional layer.
According to the dimming glass provided by the embodiment of the application, the first glass substrate 1 can be toughened glass, the second glass substrate 8 comprises toughened glass 81 and thin glass 83 which are sequentially arranged or comprises two layers of toughened glass, and because the first glass substrate 1 and the second glass substrate 8 are manufactured in advance and then bonded, the toughened glass 81 can be manufactured into a required shape according to requirements before manufacturing, for example, a large radian is achieved, and when the toughened glass 81 and the thin glass 83 are adopted by the second glass substrate 8, the thin glass 83 can be formed into a required shape in advance and then bonded with the toughened glass 81. Then, liquid crystal is poured between the first glass substrate 1 and the second glass substrate 8, and the liquid crystal is uniformly distributed, so that the display effect of the manufactured dimming glass is better.
Further, the thickness of the tempered glass used for the first glass substrate 1 is 1mm to 3mm. When the second glass substrate 8 includes the tempered glass 81 and the thin glass 83 which are sequentially arranged, the thickness of the tempered glass 81 is 1mm to 3mm, and the thickness of the thin glass 83 is 0.5mm to 1mm. When the second glass substrate 8 includes two layers of tempered glass, the thickness of the tempered glass is 1mm to 3mm. The PVB thickness is 0.38 mm-1.52 mm.
Optionally, the dimming glass further comprises an insulating layer 9. The heat insulating layer 9 is provided on the side of the second glass substrate 8 remote from the second metal layer 7. If the light control glass is used in an automobile, the heat insulating layer 9 is positioned in the automobile and directly contacts air. The heat insulation layer 9 can achieve a certain low radiation effect by being in contact with air, and can achieve an effect equivalent to that of on-line Lowe, so that the heat insulation effect of the dimming glass is further enhanced. The heat insulating layer 9 is used as a low-radiation surface at the indoor side, has a certain infrared reflection effect, and can reduce the heat transfer coefficient of glass and enhance the heat insulating effect of the glass. In addition, the safety of the dimming glass can be improved.
The insulating layer 9 is in direct contact with air and requires superior oxidation resistance. The heat insulation layer 9 is made of indium tin oxide or tin oxide, so that oxidation resistance of the heat insulation layer 9 can be enhanced.
Wherein the thickness of the heat insulation layer 9 is 50 nm-200 nm. As shown in fig. 3, when the thickness of the heat insulating layer is 70nm, 115nm, 125nm, and 135nm, it can be seen that the thicker the thickness of the heat insulating layer is, the higher the infrared reflectance is, and the better the heat insulating effect is. But increases in thickness to some extent affect the transmittance. Therefore, the thickness of the heat insulation layer 9 is 50 nm-200 nm, so that the good transmittance of the dimming glass can be ensured, and the good heat insulation effect can be ensured.
In practice, since the distance between the first glass substrate 1 and the second glass substrate 8 needs to match the requirement of the thickness (< 20 um) of the liquid crystal cell, the first glass substrate 1 and the second glass substrate 8 cannot be connected by PVB (thickness is 0.38mm to 1.52 mm). To enhance the bonding force of the first glass substrate 1 and the second glass substrate 8, the sealant layer 4 includes a first sealant layer 41 and a second sealant layer 42. The first sealing ring glue sub-layer 41 and the second sealing ring glue sub-layer 42 are sequentially arranged on the outer ring of the dye liquid crystal layer 5, and the first sealing ring glue sub-layer 41 is close to the dye liquid crystal layer 5, so that the first sealing ring glue sub-layer 41 and the second sealing ring glue sub-layer 42 jointly act to bond the first glass substrate 1 and the second glass substrate 8, and seal the interval cavity of the dye liquid crystal layer 5. The sealant used for the first sealing ring glue sub-layer 41 may be a common seal glue, and the sealant used for the second sealing ring glue sub-layer 42 may be a liquid optical glue such as OCR.
Another embodiment of the present invention provides a method for preparing the light-adjusting glass, which is used for preparing the light-adjusting glass, and includes steps 1 to 3, wherein the serial numbers after the steps do not represent the execution sequence.
And 1, arranging a first metal layer 2 on a first glass substrate 1, and arranging a first orientation layer 3 on the first metal layer 2 to obtain a first plywood.
And 2, arranging a second metal layer 7 on the second glass substrate 8, and arranging a second orientation layer 6 on the second metal layer 7 to obtain a second plywood.
And 3, pouring a dye liquid crystal layer 5 between the first metal layer 2 of the first plywood and the second metal layer 7 of the second plywood, and arranging a ring glue layer 4 on the outer ring of the dye liquid crystal layer 5 to bond the first plywood and the second plywood.
According to the dimming glass prepared by the preparation method of the dimming glass provided by the embodiment of the application, as the liquid crystal dye layer is poured between the first and second manufactured plywood, the first and second glass substrates 1 and 8 are directly used as the substrates (the thin glass substrates of the existing dimming glass functional layer are replaced, the step of re-laminating after the existing dimming glass is manufactured with the functional layer is omitted), and the pressure is not applied to the dye liquid crystal layer 5 in the bonding process of the first and second plywood, so that the difference of box thickness caused by uneven lamination stress is avoided, the uniform dispersion of liquid crystal is realized, the situation of poor local black spots is avoided, the dimming is uniform, the preparation process is simple and easy to operate, and the yield is improved when the dimming glass is manufactured. Through setting up ring glue layer 4 with first plywood and second plywood bonding, the glass assembly of adjusting luminance is laminated glass to with adjusting luminance in the function integration to this laminated glass, the security is high. Compared with the existing dimming glass, the dimming glass provided by the embodiment of the application has the advantages that the number of layers of the first thin glass, the second thin glass, PVB (polyvinyl butyral) bonding the first thin glass and the second thin glass is reduced, so that the overall thickness is reduced, the requirement that the thickness of the assembly is less than or equal to 5mm can be met, and the thickness can be flexibly changed according to the requirement. According to the embodiment of the application, the thicknesses of the first metal layer 2 and the second metal layer 7 are 5-20 nm, the used metal has a near infrared reflection effect, and the first metal layer 2 and the second metal layer 7 can reflect near infrared light and transmit visible light, so that adjustment based on a visible light wave band and blocking of the near infrared light are realized, and the sun-shading and heat insulation effects are realized. Meanwhile, the first metal layer 2 and the second metal layer 7 can replace the existing ITO layer to serve as electrode layers, have better conductive effect, are electrically connected with a flexible circuit board 10 (English: FPC) and can drive liquid crystal to deflect when being electrified, so that quick response of dimming glass is realized, signal difference between an output end and an input end of the dimming glass and delay of output signals are reduced, and the dimming effect is more uniform on large-size dimming glass. The first metal layer 2 and the second metal layer 7 are thinner, if the dimming glass is easily oxidized in the air, the dye liquid crystal layer 5 is poured between the first metal layer 2 and the second metal layer 7, and the annular glue layer 4 is arranged on the outer ring of the dye liquid crystal layer 5, so that the first metal layer 2 and the second metal layer 7 cannot be contacted with the outside, the metal layers can be isolated from water and oxygen, and the sealing of the first metal layer 2 and the second metal layer 7 can be realized without adding a protective layer for preventing the oxidation of the metal layers.
Specific examples of the dimming glass of the present invention are provided herein.
Example 1
The structure of the light control glass from outside to inside is a first glass substrate 1 (tempered glass), a first metal layer 2 (silver), a first alignment layer 3, a dye liquid crystal layer 5, a second alignment layer 6, a second metal layer 7 (silver), tempered glass 81, PVB82, thin glass 83 and a heat insulating layer 9 (indium tin oxide).
Example 2
The structure of the light control glass from outside to inside is a first glass substrate 1 (toughened glass), a first metal layer 2 (silver), a first alignment layer 3, a dye liquid crystal layer 5, a second alignment layer 6, a second metal layer 7 (silver) and toughened glass 81.
Comparative example
Toughened glass, PVB, first thin glass, first ITO layer, first orientation layer, liquid crystal layer, second orientation layer, second ITO layer, second thin glass, PVB, toughened glass.
The thermal insulation effect simulation data for the dimming layers of example 1, example 2 and comparative example (conventional dimming glass) in the dark state are shown in table 1 below.
TABLE 1
| Example 1 | Example 2 | Comparative example |
| Visible light transmittance (Tv) | 1.1 | 1.1 | 1.4 |
| Heat insulation coefficient (g) | 0.23 | 0.26 | 0.45 |
| K value | 3.4 | 5.1 | 5.1 |
As can be seen from table 1, examples 1 and 2 have lower visible light transmittance and have better sun-shading effect. The heat insulation coefficients of the embodiment 1 and the embodiment 2 are lower, and the heat insulation effect is better. Since example 1 has more PVB82, thin glass 83 and insulating layer 9 than example 2, it has a better insulating effect. The K value of example 1 is the lowest, with a superior insulating effect.
In this specification, each embodiment is described in a progressive manner, and the same or similar parts of each embodiment are referred to each other, and each embodiment is mainly described as a difference from other embodiments.
The foregoing embodiments are only for illustrating the technical solution of the present application, but not for limiting the same, and although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that modifications may be made to the technical solution described in the foregoing embodiments, or equivalents may be substituted for some or all of the technical features thereof, without departing from the spirit of the corresponding technical solution from the scope of the technical solution of the present application.