TWI723840B - One-way perspective anti-glare heat insulation film and one-way perspective anti-glare heat insulation glass - Google Patents

Abstract

A one-way perspective anti-glare heat-insulating glass that reflects the sunlight incident from the outside through the optical unit formed by stacking high and low refractive index layers to achieve the effect of heat insulation and effectively reduce internal light reflection. In addition, with The setting of the optical adjustment layer can also adjust the light transmittance, so that the inner and outer sides of the glass have different ratios of light transmittance. In addition, the present invention also provides a one-way anti-glare heat insulation film at the same time.

Description

One-way perspective anti-glare heat insulation film and one-way perspective anti-glare heat insulation glass

The present invention relates to a heat-insulating film and heat-insulating glass, in particular to a heat-insulating film and heat-insulating glass with unidirectional anti-glare properties.

In order to reduce ultraviolet radiation and heat energy to reduce indoor temperature rise, more and more people choose to use sunscreen and heat insulation film on the glass of the car or the door and window glass of the building to achieve sun protection and energy saving. purpose.

At present, the sunscreen and heat insulation film materials commonly used in building or automotive glass are roughly divided into two categories: metal and ceramics. Metal coating is cheaper and its appearance can be more diversified. However, the aging degree of metal coating is faster. In addition, due to material characteristics, metal coating is easy to affect electronic signals, and the reflection in the car/indoor is serious, especially at night. When the color is dim, it is more likely to cause serious reflections from indoor/car light, which may cause eye discomfort for people in the car/indoor. Ceramic sunscreen insulation film has the advantages of not affecting electronic signals, low reflectivity, good thermal insulation and high stability. However, the material selection is less and the price is expensive.

Therefore, the purpose of the present invention is to provide a one-way anti-glare heat insulation film.

Therefore, the one-way perspective anti-glare heat insulation film of the present invention is used to adhere to the inner surface of a light-transmitting substrate that reverses sunlight.

The one-way see-through anti-glare heat insulation film includes a transparent optical adhesive layer, an optical unit, a primer unit, a support layer, an optical adjustment layer, and a strengthening layer formed in sequence.

The transparent optical adhesive layer is used for bonding to the inner surface of the transparent substrate.

The optical unit is connected to the surface of the transparent optical adhesive layer, and is formed by staggered stacking of multiple high refractive index layers and low refractive index layers, wherein the high refractive index layers are titanium pentoxide, and the low refractive index layers are Silicon dioxide, and the optical unit is connected to the transparent optical adhesive layer with a low refractive index layer.

The primer unit is formed on the optical unit and is composed of inorganic materials, and the surface roughness in contact with the optical unit is not greater than 50 nm.

The support layer is connected with the primer unit and is composed of a polymer material with a light transmittance of greater than 90% and a haze of less than 1%.

The optical adjustment layer is connected to the support layer for adjusting the light transmittance to be between 40% and 70%.

The strengthening layer is connected to the support layer and is made of inorganic materials with a hardness greater than F and a light transmittance of not less than 90%.

Wherein, the haze of the one-way anti-glare heat insulation film is less than 3%, and the two opposite sides of the one-way anti-glare heat insulation film have different light transmittances.

In addition, another object of the present invention is to provide a one-way perspective anti-glare heat-insulating glass.

Therefore, the one-way anti-glare heat-insulating glass of the present invention includes a glass substrate and a one-way anti-glare heat-insulating film.

The glass substrate has an inner surface that reverses sunlight.

The one-way perspective anti-glare heat insulation film is attached to the inner surface and has the structure as described above.

The effect of the present invention is: through the optical unit stacked by high and low refractive index layers, it can effectively reflect the sunlight incident from the outside, achieve the effect of heat insulation and present a single color light reflection, and in addition, cooperate with the setting of the optical adjustment layer , Can also adjust the light transmittance, so that the inside and outside of the glass have different ratios of light transmittance.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same numbers. In addition, the drawings only show the spatial relationship between the elements and the film layers, not the actual thickness, size, or relative proportions of the elements and film layers.

1 and 2, an embodiment of the one-way anti-glare heat-insulating glass of the present invention includes a glass substrate 2 and a one-way anti-glare heat-insulating film 3.

The glass substrate 2 can be a glass door and window of a general building, or a windshield or glass window of a vehicle, and has an inner surface 21 that reverses the direction of sunlight.

The one-way anti-glare heat insulation film 3 includes a transparent optical adhesive layer 31 adhered to the inner surface 21, and an optical unit 32, an undercoating unit 33, and an optical unit 32 sequentially stacked from the transparent optical adhesive layer 31. A support layer 34, an optical adjustment layer 35, and a strengthening layer 36.

The transparent optical adhesive layer 31 has a transparent colloid 311 with high light permeability and a light absorber 312 dispersed in the transparent colloid 311. The transparent colloid 311 may be selected from optical adhesive materials such as acrylic adhesive, and the light-absorbing particles 312 are selected from at least one of an ultraviolet light absorber and an infrared light absorber that can absorb ultraviolet light and/or infrared light. The blending of the light absorber 312 can further absorb the energy of the incident light and improve the heat insulation effect.

It should be noted that the light absorber 312 may also not be blended according to requirements. That is to say, in some embodiments, the transparent optical adhesive layer 31 may also be composed of only a transparent colloid 311 with high light transmittance. The light absorber 312 is not included.

The optical unit 32 is formed on the surface of the transparent optical adhesive layer 31 and is obtained by stacking multiple low refractive index layers 321 and high refractive index layers 322 alternately and at least 4 layers. Among them, the low refractive index layers 321 are _{silicon dioxide (SiO 2} ), the high refractive index layers 322 are titanium pentoxide (Ti ₃ O ₅ ), and considering the reflection of light, the optical unit 32 is The low refractive index layer 321 is connected to the transparent optical adhesive layer 31. FIG. 1 is that the optical unit 32 is obtained by stacking 4 layers of high and low refractive index layers 322, 321, but the number of stacked layers of the high and low refractive index layers 322, 321 in actual implementation can be designed according to the requirements of the optical unit 32 And there are different numbers, which are not limited to the number of stacked layers.

It is worth mentioning that the optical unit 32, in addition to using the high and low refractive index layers 322 and 321 to control the number of stacked layers and the thickness of each layer, can also have a high reflectivity to external incident light, and can make internal light have high In addition to the transmittance, it also has different reflected light colors according to the design of the reflection spectrum, and the appearance of the one-way anti-glare heat insulation film 3 can be different due to the different colors of the reflected light of the optical unit 32. s color.

The primer unit 33 is made of inorganic materials, and in order for the optical unit 32 to be smoothly adhered to the support layer 34 by the primer unit 33 and the support layer 34 and to exhibit better adhesion, the primer unit 33 and the optical unit 32 The surface roughness of the contact surface is not more than 50nm.

Specifically, the undercoating unit 33 may have a single layer of undercoating made of one of metal oxide or silicon monoxide, or as shown in FIG. 1, at the same time, it may have a layer made of silicon monoxide and formed on it. A first primer layer 331 on the optical unit 32 and a second primer layer 332 formed on the first primer layer 331 and made of metal oxide.

In some embodiments, the metal oxide is selected from zirconia, and the surface roughness of the first primer layer 331 and the second primer layer 332 is not greater than 50 nm.

By using the primer unit 33 as a medium, the adhesion between the optical unit 32 and the support layer 34 can be effectively improved, the optical unit 32 can be prevented from peeling off, and the one-way anti-glare heat insulation film 3 can be improved. Service life.

The support layer 34 is made of polymer materials with a light transmittance of not less than 90% and a haze of not more than 1%, such as polyester, cyclic olefin copolymer, or polyimide. It is used to make the one-way anti-glare heat insulation film 3 have basic support, so as to facilitate the use and operation of the one-way anti-glare heat insulation film 3, and does not affect the one-way anti-glare heat insulation film 3 basic optical properties.

The optical adjustment layer 35 is used to adjust the light transmittance to between 40% and 70%, so as to control the light incidence and penetration of the incident light and the exit light. The optical adjustment layer 35 uses dyes to absorb light, and can be formed on the support layer 34 by coating or the like. The optical adjustment layer 35 can have at least two light transmittance changes through process control as required. A graded optical film, or a full-page film with a single light transmittance.

Taking the one-way anti-glare heat insulation film 3 of the present invention as an example of glass applied to a car, when applied to a front windshield, the optical adjustment layer 35 can be adjusted to make the upper side of the front windshield have a relatively high Low light transmittance, avoid direct sunlight to interfere with driving; near the main line of sight area has a higher transmittance to avoid insufficient light limit to affect the line of sight, so that the optical adjustment layer 35 has at least two types from the top of the windshield A gradual optical film with downward light transmittance changes. When applied to the door and window glass of a car, the optical adjustment layer 35 with a single light transmittance can be used, so that the one-way anti-glare heat insulation film 3 can be more widely used.

In addition, the high reflectivity of the optical unit 32 to the external incident light and the high penetration of the internal light allow the two opposite sides of the one-way anti-glare heat insulation film 3 to have different light transmittances. The one-way anti-glare heat insulation film 3 has the characteristics of one-way perspective. Especially when used at night, it can make the car interior/indoor light have high penetrability, does not affect the night vision, and has high reflectivity to the external incident light. It cannot clearly observe the interior from the outside, and can have better concealment.

The aforementioned dyes used in the optical adjustment layer 35 are well-known to those in the related art and are not the focus of the present invention. Therefore, no further description is given here.

The strengthening layer 36 is made of an inorganic material with a hardness greater than F (pencil hardness test) and a light transmittance of not less than 90%, and can be used to protect the optical adjustment layer 35 from being damaged. In some embodiments, the strengthening layer 36 is selected from zirconia as a constituent material.

The aforementioned one-way perspective anti-glare heat insulation film 3 is made on the basis of the support layer 34, and the optical adjustment layer 35 and the strengthening layer 36 are respectively formed on opposite sides of the support layer 34 by coating. , And the primer unit 33, and then use a low-temperature sputtering method to form the optical units 32 stacked sequentially and staggered on the primer unit 33, and finally form the transparent optical adhesive layer 31 on the surface of the optical unit 32, namely The one-way anti-glare heat insulation film 3 can be produced. After that, the one-way anti-glare heat-insulating film 3 is attached to the inner surface 21 of the glass substrate 2 to obtain the one-way anti-glare heat-insulating glass.

Referring to FIG. 2, it should be noted that, before the one-way anti-glare heat insulation film 3 is attached to the glass substrate 2, the surface of the optical unit 32 opposite to the transparent optical adhesive layer 31 may be covered first A release layer 37 that can be detachably removed. The release layer 37 is used to isolate and protect the transparent optical adhesive layer 31, and the release layer 37 can be torn off during use, and the transparent optical adhesive layer 31 can be used to adhere to the inner surface 21 of the substrate 2, and The one-way perspective anti-glare heat-insulating glass is obtained.

In addition, it should be further explained that the required optical properties of the aforementioned one-way anti-glare heat-insulating glass have different requirements in different places, and the one-way anti-glare heat-insulating film 3 can be adjusted. Got. For example, when the one-way anti-glare heat insulation glass is a glass door and window of a general building, the haze of the one-way anti-glare heat insulation film 3 only needs to be controlled to be not more than 3%. If the one-way anti-glare heat-insulating glass is the windshield of a vehicle, the haze of the one-way anti-glare heat-insulating film 3 needs to be controlled to not more than 1% to meet the vehicle safety regulations at the same time. .

To sum up, the present invention is made by mixing the light absorber 312 in the transparent optical adhesive layer 31, and using the optical unit 32 formed by interlacing the high and low refractive index layers 322 and 321, so as to make the sunlight incident from the outside It can be effectively reflected by the optical unit 32 to achieve a high heat insulation effect. In addition, the one-way anti-glare heat insulation film 3 has high reflectivity and can present a single color of reflected light, so only part of the wavelength band passes through The one-way anti-glare heat insulation film 3 enters the room or the car, and the dye of the optical adjustment layer 35 absorbs light, which can also effectively reduce the internal reflection of the light, and can solve the problem caused by the conventional metal heat insulation film. Internal reflection problems. In addition, through the gradual design of the light transmittance of the optical adjustment layer 35, the glass of the car (such as the abnormal viewing zone of the upper peripheral edge of the windshield) has a shape from the upper peripheral edge to the lower peripheral edge, so that the light transmittance changes in a proportional and incremental manner The amount of light can improve the visibility of the external environment from the inside of the car in the normal viewing zone. In addition, through the optical unit 32, the one-way anti-glare heat insulation film 3 can have the characteristics of one-way perspective, which can be used in different environments. The bottom is concealed, even when the outside light is dim, the outside world is still clear and bright from the inside of the car, without affecting the driving line of sight, so it can indeed achieve the purpose of the invention.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to Within the scope covered by the patent of the present invention.

2: Glass substrate 21: inner surface 3: One-way perspective anti-glare insulation film 31: Transparent optical adhesive layer 311: transparent colloid 312: light absorber 32: Optical unit 321: low refractive index layer 322: high refractive index layer 33: Primer unit 331: The first primer 332: second primer 34: support layer 35: Optical adjustment layer 36: Strengthening layer 37: Release layer

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is a schematic diagram illustrating the film structure of this embodiment of the one-way perspective anti-glare heat-insulating glass of the present invention; and 2 is a schematic diagram illustrating the structure of the one-way anti-glare heat insulation film with a release layer.

2: Glass substrate

21: inner surface

3: One-way perspective anti-glare insulation film

31: Transparent optical adhesive layer

311: transparent colloid

312: light absorber

32: Optical unit

321: low refractive index layer

322: high refractive index layer

33: Primer unit

331: The first primer

332: second primer

34: support layer

35: Optical adjustment layer

36: Strengthening layer

Claims (9)

A one-way see-through anti-glare heat insulation film, which is used for bonding to the inner surface of a light-transmitting substrate opposite to the direction of sunlight, including a transparent optical adhesive layer formed in sequence, for bonding to the light-transmitting The outer surface of the substrate; an optical unit, connected to the surface of the transparent optical adhesive layer, is formed by staggered stacking of multiple high refractive index layers and low refractive index layers, wherein the high refractive index layers are titanium pentoxide, The low refractive index layers are silicon dioxide, and the optical unit is connected to the transparent optical adhesive layer with a low refractive index layer; a primer unit is formed on the optical unit and is made of inorganic materials and is connected to the optical unit. The surface roughness of the unit contact is not greater than 50nm; a support layer, connected to the primer unit, is composed of a polymer material with a light transmittance greater than 90% and haze less than 1%; an optical adjustment layer is connected to the support layer , Used to adjust the light transmittance to between 40~70%; and a strengthening layer, connected to the optical adjustment layer, made of inorganic materials with a hardness greater than F and a light transmittance of not less than 90%, wherein the The haze of the one-way anti-glare insulation film is less than 3%, and the two opposite sides of the one-way anti-glare insulation film have different light transmittances. The one-way see-through anti-glare heat insulation film according to claim 1, wherein the support layer is selected from polyester, cyclic olefin copolymer, or polyimide. The one-way see-through anti-glare heat insulation film according to claim 1, further comprising a peelable release layer located on the surface of the transparent optical adhesive layer opposite to the optical unit. The one-way perspective anti-glare heat insulation film according to claim 1, wherein the primer The unit is selected from at least one of metal oxide or silicon monoxide. The one-way see-through anti-glare heat insulation film according to claim 4, wherein the primer unit has a first primer layer formed on the optical unit, and a first primer layer formed on the first primer layer. The second primer layer, the materials of the first primer layer and the second primer layer are selected from silicon oxide and zirconium oxide, and the surface roughness of the first primer layer and the second primer layer are equal Not more than 50nm. The one-way see-through anti-glare heat insulation film according to claim 1, wherein the transparent optical adhesive layer further comprises at least one of an ultraviolet light absorber and an infrared light absorber. The one-way see-through anti-glare heat insulation film according to claim 1, wherein the constituent material of the strengthening layer is zirconia. The one-way see-through anti-glare heat insulation film according to claim 1, wherein the optical adjustment layer has at least two light transmittances. A one-way perspective anti-glare heat-insulating glass, comprising: a glass substrate with an inner surface irradiated by sunlight in the opposite direction; and a one-way perspective that is attached to the inner surface and has a structure as described in claim 1 Anti-glare insulation film.

Images