JP2895741B2 - Glass plate with enhanced livability - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a simple monolayer or two-layer membrane.
By coating the layer film, the glass plate has a well-balanced transparency and mirror effect, and at the same time it is satisfactory, making it environmentally friendly and expressing a sense of existence, and improving the habitability with radio wave transmission Regarding a glass plate, the present invention provides a glass plate excellent in livability and environment that can utilize its function as a window material for architecture.

[0002]

2. Description of the Related Art In general, high-performance heat ray reflective glass having a high reflectance has been proposed and commercialized. Among them, there is an infrared reflective glass having a high transmittance, and furthermore, a non-reflective glass and the like are known. I have.

For example, Japanese Patent Application Laid-Open No. 63-134232 discloses an infrared reflective article having a high transmittance. A transparent oxide first layer and a silver first layer are sequentially formed on a transparent substrate from the substrate side. 2
An infrared reflective article provided with a five-layer coating comprising a layer, a third layer of a transparent oxide, a fourth layer of silver, and a fifth layer of a transparent oxide, wherein the silver layer has a thickness of 110 ° or less; Disclosed are those having a visible light transmittance of 70% or more. Examples include glass substrates / TiO ₂ (thickness of 35 nm) / Ag (thickness of 10 n).
m) / TiO ₂ (film thickness 70 nm) / Ag (film thickness 10 nm) / TiO ₂ (film thickness 3
5nm), visible light transmittance 78.7%, visible light reflectance
8.5%, solar energy transmittance is 53.2%, solar energy reflectance is 28.2%, reflectance at 10μ is 95%, and reflection color is green. High reflectance in the infrared region and high transmittance in the visible region. It is described that the reflection color can be changed quite freely.

[0004] For example, see Japanese Patent Application Laid-Open No. 63-218513.
Is TiO_XThe thin film and the optical element using it are described
Yes, molecular formula: TiO_X(Where 1 <x <2)
Thin film titanium oxide based material, and the thin film on a substrate
A formed optical element is disclosed, using TiO 2 as evaporation source
Once the vacuum chamber is once evacuated to high vacuum,
To introduce oxygen partial pressure of 5 × 10^-3~ 8 × 10^-FourSet to Torr
Formed on the substrate by performing vacuum evaporation
Not to present and not to be charged,
On synthetic resin substrates, the thin film peels off the substrate along with the skin layer
With a thickness of about 0.001 to 20 μm.
The folding ratio nd is 2.2 to 2.4, and
And PMMA substrate / TiO_X(1 <x <2) [film thickness 488 nm, nd
= 2.32] colorless, transparent, non-charged and of good adhesion,
PMMA substrate / TiO_X(1 <x <2) [film thickness 488 nm, nd = 2.3
2] / SiO_X[Thickness 488nm, nd = 1.46] or PMMA base
Plate / SiO _X(1 <x <2) [thickness 550 nm, nd = 1.65] / T
iO_X(1 <x <2) [film thickness 550 nm, nd = 2.32] / SiO
_X[Thickness 550nm, nd = 1.46] anti-reflective coating, PMMA
Substrate / SiO_X(1 <x <2) [thickness 632.8 nm nd = 1.46]
/ TiO_X(1 <x <2) [thickness 632.8 nm, nd = 2.3]
A projection film is disclosed.

[0005]

Problems to be Solved by the Invention In the infrared reflecting article having a high transmittance disclosed in each of the above-mentioned conventional publications, for example, as described in JP-A-63-134232, there are five layers and a multilayer. Even if it is complex and has high reflectance in the infrared region and high transmittance in the visible region, it has poor chemical resistance or weather resistance due to the presence of the silver layer, and also prevents reflection of the silver layer in the visible region. Therefore, it is necessary to increase the transmittance in the visible region by applying a transparent oxide layer, and the visible light reflectance is 9 to 6%.
It is inevitable to be as low as possible, and because it is a silver layer, it has radio wave shielding properties, it is not necessarily a simple film configuration, it fully appeals to glass likeness, and a well balanced optics in that It is difficult to say that it has characteristics and radio wave transparency.

[0006] For example, in a TiO _X thin film and an optical element using the TiO _X thin film described in JP-A-63-218513,
_X (1 <x <2) It is difficult to say that the thin film is sufficiently stable at the time of film formation and after the film formation, and there is concern about durability such as chemical resistance, weather resistance and abrasion resistance.
It is not necessarily adopted outdoors such as window materials for construction.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to specify a visible light transmittance and a visible light reflectance with a simple film structure, and to provide a glass. Appealing with fullness and appealing, while exhibiting transparency and presence, as well as transparency and mirror properties, it has well-balanced optical properties and has durability such as chemical resistance, weather resistance or wear resistance, Moreover, it is possible to provide an inexpensive glass sheet having radio wave permeability and improved habitability.

That is, according to the present invention, there is provided a glass sheet for architectural window material having a thin film layer formed on the surface of a clear substrate, wherein the visible light transmittance is 67 to 86%, and the thin film layer is a film.
An oxide film mainly composed of TiO ₂ having a thickness of 5 nm or more and 35 nm or less ,
Is an oxide film mainly composed of SnO ₂ having a thickness of 15 nm or more and 55 nm or less.
Yes , the average visible light reflectance of the glass surface and the film surface is 10-30%,
Visible light reflectance difference between glass surface and film surface is 3.5% or less, glass
Stimulation purity of reflected light on the surface and film surface is 5 to 25%
It is a glass plate with enhanced livability.

Further , the present invention provides a method for forming a substrate on a clear substrate.
In a glass plate for building window material with a thin film layer formed,
The visible light transmittance is 67 to 86%, and the thin film layer is made of glass.
TiO ₂ thin film layer as the first layer from the plate surface, second layer on it
The eye consists of _two layers of SnO ₂ thin film layers, each of which is
Has a thickness of 5 nm or more and 30 nm or less, and has a flat surface between the glass surface and the film surface.
Equivalent visible light reflectance of 10-30%, visible light reflection on glass surface and film surface
Emissivity difference of 3.5% or less, reflection on glass surface and film surface
A glass plate with an improved livability with a light stimulation purity of 5 to 25%
It is.

[0010] Furthermore, the present invention provides a method for producing a clear substrate surface.
In a glass sheet for architectural window material with a thin film layer formed on
The visible light transmittance is 67 to 86%, and the thin film layer is made of glass.
SnO ₂ thin film layer as the first layer from the plate surface, second layer on top
The eye consists of _two layers of TiO ₂ thin film layers, each of which is
Has a film thickness of 5 nm or more and 35 nm or less, and has a flat surface between the glass surface and the film surface.
Equivalent visible light reflectance of 10-30%, visible light reflection on glass surface and film surface
Emissivity difference of 3.5% or less, reflection on glass surface and film surface
A glass plate with an improved livability with a light stimulation purity of 5 to 25%
It is.

In any of the above cases, the stimulus purity
Is preferably 6 to 20%.

The clear substrate has a thickness of 5 to 19 mm.
Is what you do.

Any of the above glass plates having the thin film layer formed thereon
It also has radio wave transparency.

Note that a clear substrate is transparent and non-colored.
Substrate.

Here, as a clear glass plate, a building
It is a so-called glass plate made of an inorganic material such as commercially available soda lime glass or an organic material such as polycarbonate or acrylic used as a window material for construction, and is a flat plate or a bent plate glass. Various types of processed glass such as a multi-layer glass and a surface-treated glass may be used. Further, the shape of the glass plate is not particularly limited, but a substantially quadrangular shape having a long side and a short side can be most preferably employed.

Any of the above-mentioned glass sheets having improved livability can be used.
Even so , the visible light transmittance is 67 to 86%, the average visible light reflectance between the glass surface and the film surface is 10 to 30%, and the visible light reflectance difference between the glass surface and the film surface is 3.5% or less. In the range where the visible light transmittance is less than 67% or the average visible light reflectance is more than 30%, the reflection performance, especially the reflection performance of the film surface, becomes too high, the visibility decreases, and the visible light transmittance decreases. 86%
When the average visible light reflectance exceeds 10% or the average visible light reflectance is less than 10%, the reflection performance is too low, and a predetermined mirror effect cannot be obtained. Also, the visible light reflectance difference
If it exceeds 3.5%, the transparent performance cannot be utilized, for example, absorption or multiple reflection in glass. The difference in the visible light reflectance is preferably about 3% or less, which further balances the transparency and the mirror properties. In general, optical characteristics are a combination of transmittance, reflectance, and absorptance, and there are some aspects that differ depending on the balance. However, if the optical properties are within the above range, the transmittance and the reflectance can be satisfied simultaneously.

As a thin film layer formed on a glass plate, TiO ₂ and
The reason why the first and _second layers of SnO _{2 and} / or SnO ₂ is used is that since the film has a simple structure and does not require a complicated process, the cost can be reduced. The thin-film layer is TiO ₂ or a SnO ₂
In addition, if it is a composite oxide mainly composed of these, a slight blue
If anything, it has a tasteful hue.
Single color or double layer
In view of the design, the required visible light transmittance is
It has visibility and has the expected visible light reflectivity and mirror effect.
It can be brought appropriately. Also shows a glass plate with increased one comfort, the film thickness of the TiO ₂ thin film layer is not more 5nm or 35nm or less, the average of the excitation purity of the reflection color of the reflection color to the film surface of the excitation purity (glass surface The same applies to the following.) When the film thickness is less than 5 nm, the average visible light reflectance is too low, and when the film thickness exceeds 35 nm, the visible light transmittance is reduced. It will be lower than the predetermined value, and it will be impossible to obtain a glass plate with enhanced intended livability, and it will be more certain that the stimulation purity is 5 to 25%, preferably about 6 to 20%. The reason is that the performance of the glass plate with the increased value is exhibited.

Another glass plate with improved livability, the thickness of the SnO ₂ thin film layer is 15 nm or more and 55 nm or less, and the stimulus purity is 5 to
The reason of 25% is that when the film thickness is less than 15 nm, the average visible light reflectance is too low, and the stimulus purity is about 5%.
This is because when the film thickness exceeds 55 nm, and when the film thickness exceeds 55 nm, the stimulus purity becomes less than about 5%, which is not always preferable in terms of cost. Preferred stimulating purity is 6 to 20
%.

[0019] Still another glass plate with improved livability, comprising _two layers of a TiO ₂ thin film layer as a first layer and a SnO ₂ thin film layer as a second layer on the TiO ₂ thin layer from the surface of the glass plate. And the thickness of each layer is 5 nm or more and 30 nm or less,
The reason that the stimulus purity is 5 to 25% is that the film thickness is 5 nm.
If it is less than 30, it is difficult to obtain uniformity of the film thickness, and the film thickness is 30
If it exceeds nm, the visible light transmittance is too low, the average visible light reflectance is too high, and the stimulus purity often does not stay in the above range. The preferred stimulus purity is about 6 to 20%.

In addition, another glass plate having improved livability, comprising a SnO ₂ thin film layer as a first layer from the glass plate surface and a TiO ₂ thin film layer as a second layer on the SnO ₂ thin film layer. And the thickness of each layer is 5 nm or more and 35 nm or less,
The reason that the stimulus purity is 5 to 25% is that the film thickness is 5 nm.
If the thickness is within the range of 35 nm or less, the visible light transmittance and the difference between the average visible light reflectance and the visible light reflectance fall within a predetermined range. However, when the film thickness is less than 5 nm, it is difficult to obtain uniformity of the film thickness. When the film thickness exceeds 35 nm, the stimulus purity often becomes less than 5%. The preferred stimulus purity is about 6 to 20%.

Further, the reason why the glass plate having radio wave transparency is used is that a radio wave reflection type glass causes a so-called radio wave disturbance such as a ghost phenomenon on a TV to a nearby inhabitant.

Further, the thickness of the transparent substrate is 5 to 5.
The reason why it is assumed to be 19 mm is that, for example, if it is less than 4 mm, it can not be used as an outer wall material for buildings in view of wind load, and if it exceeds 20 mm, for example, the absorptivity inside the glass increases, so the transmittance and reflection We cannot satisfy both aspects of the rate at the same time.

[0023]

As described above, according to the glass plate of the present invention having improved livability, the glass plate having a thin film layer formed on the surface of a transparent substrate has a visible light transmittance of 67 to 86%, and By assuming that the average visible light reflectance between the glass surface and the film surface is 10 to 30% and the difference between the visible light reflectance between the glass surface and the film surface is 3.5% or less, and that the film thickness and the purity of stimulation are specified,
Appears with the fullness of glass and appeals, while exhibiting transparency and presence, as well as transparency and mirror properties, it has well-balanced optical properties and can be satisfied at the same time, chemical resistance, weather resistance or abrasion resistance It is possible to provide a glass plate that has durability and other properties and has radio wave transmission and improved habitability with a simple membrane configuration at a low cost. For example, in a courtyard, a mirror that can make the courtyard inside a building look large In addition, it is possible to simultaneously achieve the transparency that allows the room to be clearly seen from the room, and furthermore, it is possible to obtain the optimal effect of enjoying the night view from a hotel or the like while having a slight energy saving effect.

[0024]

The present invention will be described below in detail with reference to examples. However, the present invention is not limited to such an embodiment.

Examples 1 to 3 Clear glass (F15) having a size of 600 × 900 mm ² and a thickness of 5 mm was washed successively with a neutral detergent, water rinse, and isopropyl alcohol, dried, and then dried in a vacuum chamber of a DC magnetron sputtering apparatus. After being set so that it can reciprocate upward facing the Ti target set therein, and then evacuating the inside of the tank to about 5 × 10 ⁻⁶ Torr with a vacuum pump,
O ₂ gas (however, the flow ratio of Ar and O ₂ gas may be in the range of 1: 1 to 0: 1) is introduced to reduce the degree of vacuum to about 2 × 10 ⁻³ Torr.
Held in, applying a power of about 1.9kw targeting of the Ti, the inside of the DC magnetron sputtering by O ₂ gas, the
By transporting the glass sheet above the Ti target at a speed of about 112 mm / min, about 10 nm thick TiO ₂
A thin film was formed to obtain a sheet glass with a TiO ₂ thin film. After the film formation was completed, the application to the Ti target was stopped.

In the same manner as described above, a film thickness of 12 n
m, 20 nm, 30 nm, 35 nm, and 38 nm TiO ₂ thin films are formed, and the thickness of the glass sheet is set to 5 mm, 6 mm,
The operation was changed to 8 mm, 10 mm, 12 mm, 15 mm, and 19 mm to obtain a plate glass with a TiO ₂ thin film.

With respect to the obtained glass sheet with a TiO ₂ thin film,
Visible light transmittance (Tv: 380 to 780 nm), visible light reflectance (R
v: 380 to 780 nm), visible light reflectance difference, stimulus purity (Pe: 3
80 to 780 nm) and solar transmittance (Ts: 340 to 1800 n)
m) and solar reflectance (Rs: 340-1800 nm)
Type self-recording spectrophotometer (Hitachi Ltd.) and JISZ8722, JISR3
The optical properties were determined by 106, and a part of them was shown in Table 1 and FIGS. 1 to 3 for visible light transmittance, average visible light reflectance, visible light reflectance difference, and stimulus purity.

Regarding the surface resistivity, those having a surface resistivity of 10 ⁵ Ω / port or less are a four-probe resistance measuring device RT-8 (manufactured by NAPSON),
10 ⁵ Ω / port to 10 ⁵ MΩ / port K is a surface high resistance meter HIRE
The results were measured by STAHT-210 (manufactured by Mitsubishi Yuka Co., Ltd.).

Further, for some of them, those which are favorable in terms of cost considering productivity and the like are shown in Table 1, and those which are not good are shown in Table 1, and those which are not favorable are shown in Table 1. Table 1 shows a glass plate having improved livability as a comprehensive evaluation, and a glass plate which was not the intended one was shown as a cross in Table 1.

As a result, the single-layer glass sheet with a TiO ₂ thin film has a visible light transmittance of about 67 to 86% and a visible light reflectance of about 67 to 86%.
The difference of visible light reflectance between glass surface and film surface is about 10-30% and 3.
It was within 5%, and it was a glass plate with improved expected livability. Further, the stimulus purity was about 5 to 20%, which was more excellent. The thickness was about 10 to 35 nm.

Examples 4 to 8 In the same manner as in Example 1, a DC magnetron sputtering apparatus was set so as to be able to reciprocate upward above a Sn target set in a vacuum tank, and then set in the tank. Was degassed to about 5 × 10 ^-6 Torr by a vacuum pump, and then O ₂ gas (however, the flow ratio of Ar and O ₂ gas was from 1: 1 to 0:
Any value within the range of 1 is acceptable. ) To reduce the degree of vacuum to about 2 × 10
^-3 Torr, a power of about 0.4 kw was applied to the Sn target, and a speed of about 330 mm was applied above the Sn target in the DC magnetron sputtering using O ₂ gas.
By transporting the glass sheet at a rate of / min, a SnO ₂ thin film having a thickness of about 10 nm was formed. After the film formation was completed, the application to the Sn target was stopped.

In the same manner as described above, other than the above, SnO ₂ thin films were formed to have a thickness of 12 nm, 20 nm, 30 nm, 35 nm and 38 nm.
For each of these film thicknesses, the thickness of the glass sheet was 5 mm and 6 mm.
mm, 8 mm, 10 mm, 12 mm, 15 mm, and 19 mm.

With respect to the obtained glass sheet with SnO ₂ thin film,
Each measurement was performed using each device in the same manner as in Example 1. Some of the results are shown in Table 1 and FIGS.
The average visible light reflectance, visible light reflectance difference, and stimulus purity are shown.

As in the first embodiment, the plate glass with the SnO ₂ thin film, which is a single-layer film, has a visible light transmittance of about 67 to 86%, a visible light reflectance of about 10 to 30%, and a visible light on the glass surface and the film surface. The difference in light reflectance was within 3.5%, and the glass plate had the desired livability. Further, the stimulus purity was as excellent as 5 to 15%. The thickness was about 15 to 55 nm.

Examples 9 to 11 In the same manner as in Examples 1 and 2, a sheet glass was prepared and set in a vacuum chamber of a DC magnetron sputtering apparatus.
It was set so as to be able to reciprocate upward facing the target of Ti and Sn, and then the inside of the tank was evacuated to about 5 × 10 ⁻⁶ Torr by a vacuum pump, and then O ₂ gas (however, , The flow ratio of Ar and O ₂ gas may be in the range of 1: 1 to 0: 1), and the degree of vacuum is maintained at about 2 × 10 ⁻³ Torr, and about 1.9 μm is applied to the Ti target. A power of kw was applied, and the plate glass was transported at a speed of about 112 mm / min above the Ti target in a DC magnetron sputter using O ₂ gas to form a TiO ₂ thin film having a thickness of about 10 nm. After the film formation was completed, the application to the Ti target was stopped.

Next, while the plate glass was kept in the vacuum chamber, an electric power of about 0.4 kw was applied to the Sn target, and O ₂
By transporting the glass sheet at a speed of about 660 mm / min above the Sn target in a DC magnetron sputter by gas, a SnO ₂ thin film having a thickness of about 5 nm is formed and laminated on the TiO ₂ thin film surface of the glass sheet. did.

With respect to the obtained two-layer coated glass sheet of SnO ₂ thin film / TiO ₂ thin film / sheet glass, each measurement was carried out using each apparatus in the same manner as in Example 1. Some of the results are shown in Table 1 and FIGS. 7 to 9 for visible light transmittance, average visible light reflectance, visible light reflectance difference, and stimulus purity.

As in the first embodiment, a two-layer SnO ₂ thin film
The plate glass with TiO ₂ thin film has a visible light transmittance of about 67 to 86%, a visible light reflectance of about 10 to 30%, and a visible light reflectance difference between the glass surface and the film surface of within 3.5%. It was a glass plate with improved livability. Further, when the stimulus purity is about 5 to 25%, preferably 6% or more and 20% or less, the expected result is more excellent. Its thickness is about 5-30 nm for TiO ₂ thin film
And the thickness of the SnO ₂ thin film was about 5 to 30 nm.

Examples 12 to 15 In the same manner as in Example 3, on the surface of the sheet glass, first, Sn and Sn set in a vacuum chamber of a DC magnetron sputtering apparatus were used.
It was set so as to be able to reciprocate upwards facing the Ti target, and then the inside of the tank was evacuated to about 5 × 10 ⁻⁶ Torr by a vacuum pump, and then O ₂ gas (however, Ar And the flow rate of O ₂ gas may be in the range of 1: 1 to 0: 1), and the degree of vacuum is maintained at about 2 × 10 ⁻³ Torr. Electric power was applied, and the sheet glass was transported at a speed of about 330 mm / min above the Sn target in a DC magnetron sputter using O ₂ gas to form a SnO ₂ thin film having a thickness of about 10 nm. After the film formation was completed, the application to the Sn target was stopped.

Next, with the plate glass kept in the vacuum chamber, an electric power of about 1.9 kw was applied to the Sn target, and O ₂
By transporting the sheet glass at a speed of about 224 mm / min above the Ti target in DC magnetron sputtering by gas, a TiO ₂ thin film of about 5 nm thickness is formed and laminated on the SnO ₂ thin film surface of the sheet glass. did.

With respect to the obtained TiO ₂ thin film / SnO ₂ thin film / sheet glass two-layer coated sheet glass, each measurement was performed in the same manner as in Example 1 using each apparatus. Some of the results are shown in Table 1 and FIGS. 10 to 12 for visible light transmittance, average visible light reflectance, visible light reflectance difference, and stimulus purity.

As in Example 1, a two-layer TiO ₂ thin film was used.
The plate glass with SnO ₂ thin film has a visible light transmittance of about 67 to 86%, a visible light reflectance of about 10 to 30%, and a visible light reflectance difference between the glass surface and the film surface of within 3.5%. It was a glass plate with improved livability. Further, when the stimulus purity was about 5 to 25%, more preferably 6% or more and 20% or less, the desired result was more excellent. The thickness of SnO ₂ thin film is about 5 ~
The thickness was about 35 nm and the thickness of the TiO ₂ thin film was about 5 to 35 nm.

[0043]

[Table 1]

Comparative Examples 1 to 6 In the same manner as in Example 1, a DC magnetron sputtering apparatus was set so as to be able to reciprocate upward facing a Ti target set in a vacuum tank. Was degassed to about 5 × 10 ^-6 Torr by a vacuum pump, and then N ₂ gas (however, the flow ratio of Ar and N ₂ gas was from 1: 1 to 0:
Any value within the range of 1 is acceptable. ) To reduce the degree of vacuum to about 2 × 10
^-3 Torr, a power of about 1.5 kw was applied to the Ti target, and a speed of about 304 mm was applied above the Ti target in DC magnetron sputtering with N ₂ gas.
By transporting the plate glass at a rate of 1 / min, a TiN thin film having a thickness of about 10 nm was formed. After the film formation was completed, the application to the Ti target was stopped.

Similarly, the thickness of the TiN thin film is set to 1 nm, 2n
m, 3 nm, 4 nm, 5 nm, 6 nm, 7 nm, 8 nm, 9 nm, 10 nm
Was formed. For each of these film thicknesses, the same procedure was performed with the thickness of the glass sheet changed to 5 mm, 6 mm, 8 mm, 10 mm, 12 mm, 15 mm, and 19 mm.

With respect to the obtained plate glass with a TiN thin film,
Each measurement was performed using each device in the same manner as in Example 1. Among them, the result of only 5 mm thickness is shown in Table 2 and FIGS. 13 to 15 for visible light transmittance, average visible light reflectance, visible light reflectance difference, and stimulus purity.

The glass sheet with a TiN thin film as a single-layer film has a visible light transmittance of about 70.8% at a film thickness of 5 nm and about 67.9% at 6 nm, but has an average visible light reflectance of less than about 10% and a glass surface. The difference in the visible light reflectance of the film surface exceeds 5%, and the others are out of the predetermined range and hardly can be said to be a glass plate having improved desired livability, and the purity of stimulation is relatively low. It was not what we were aiming for. As the film thickness becomes thicker than about 40 nm, the radio wave reflectivity gradually increases, and the cost also increases significantly.

Comparative Examples 7 to 9 Results outside the ranges shown in Examples 1 to 4 were not shown in detail, but are apparent from the combination of FIGS. 1 to 12 and from Table 2 As described above, the area outside the predetermined range is singular or plural, and does not become a glass sheet with improved livability aimed at at the very end. Under the conditions shown in Table 2, there were no significant problems in radio wave transmission and cost.

[0049]

[Table 2]

[0050]

As described above, according to the present invention,
By specifying the visible light transmittance, average visible light reflectance and visible light reflectance difference of a glass plate with a thin film layer formed on a transparent substrate, and further specifying the film thickness, stimulus purity, etc., the glass Appealing with fullness and appeal, transparency and presence as well as transparency and mirror properties can be satisfied at the same time in a well-balanced manner, and it has durability such as chemical resistance, weather resistance or abrasion resistance, In addition, we can provide a glass plate with radio wave transmission and improved livability with a simple film configuration at a low price, and provide a glass plate with excellent livability and environmental performance that demonstrates its function as a building window material. Is what you do.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing the relationship between the visible light transmittance and the thickness of a TiO ₂ thin film layer at plate thicknesses of 5, 10, 15, and 19 mm according to the glass plate with improved livability of the present invention.

FIG. 2 shows the difference between the average visible light reflectance and the visible light reflectance of a glass plate with improved livability according to the present invention, which is a plate thickness of 5, 10, 15, and 19 mm.
FIG. 4 is an explanatory diagram showing a relationship with respect to the thickness of a TiO ₂ thin film layer.

FIG. 3 is an explanatory diagram showing the relationship between the stimulus purity relating to the glass plate with improved livability and the thickness of the TiO ₂ thin film layer at a plate thickness of 5 and 19 mm according to the present invention.

FIG. 4 is an explanatory diagram showing the relationship between the visible light transmittance of a glass plate having improved livability according to the present invention and the thickness of a SnO ₂ thin film layer at a plate thickness of 5 and 12 mm.

FIG. 5 is an explanatory diagram showing the relationship between the average visible light reflectance and the visible light reflectance difference of the glass plate with improved livability according to the present invention, with respect to the thickness of the SnO ₂ thin film layer at a plate thickness of 5 and 12 mm.

FIG. 6 is an explanatory diagram showing the relationship between the stimulus purity relating to the glass plate with improved livability and the thickness of the SnO ₂ thin film layer at a plate thickness of 5 and 12 mm according to the present invention.

FIG. 7 shows a visible light transmittance of a glass plate having enhanced livability according to the present invention having a thickness of 5 mm, a two-layer film comprising a TiO ₂ thin film layer as a first layer and a SnO ₂ thin film layer as a second layer. It is explanatory drawing which shows the relationship with respect to thickness.

FIG. 8 is a graph showing the difference between the average visible light reflectance and the visible light reflectance of the glass plate with improved livability according to the present invention.
FIG. 4 is an explanatory diagram showing a relationship between the thickness of a TiO ₂ thin film layer and the thickness of a second layer composed of a second layer composed of a SnO ₂ thin film layer.

FIG. 9 shows the stimulus purity of the glass plate of the present invention having improved livability, the plate thickness being 5 mm, the first layer being a TiO ₂ thin film layer and the second layer being a Sn layer.
FIG. 3 is an explanatory diagram showing a relationship between the film thicknesses of two O ₂ thin film layers.

FIG. 10 shows a two-layered film having a thickness of 5 mm and a first layer of a SnO ₂ thin film layer and a second layer of a TiO ₂ thin film layer having a visible light transmittance of 5 mm for the glass plate with improved livability according to the present invention. It is explanatory drawing which shows the relationship with respect to thickness.

FIG. 11 shows a difference between an average visible light reflectance and a visible light reflectance difference of the glass plate with improved livability according to the present invention, wherein the first layer has a thickness of 5 mm.
FIG. 3 is an explanatory diagram showing a relationship between the thickness of a SnO ₂ thin film layer and the thickness of a second layer including a TiO ₂ thin film layer as a second layer.

FIG. 12 is a graph showing the stimulus purity of a glass plate having improved livability according to the present invention, wherein the thickness of the plate is 5 mm, the first layer is a SnO ₂ thin film layer, and the second layer is
FIG. 3 is an explanatory diagram showing a relationship between the film thicknesses of two O ₂ thin film layers.

FIG. 13 shows a comparative example in which the visible light transmittance is
It is explanatory drawing which shows the relationship with respect to the film thickness of a thin film layer.

FIG. 14 is an explanatory diagram showing, as a comparative example, the relationship between the average visible light reflectance and the visible light reflectance difference with respect to the thickness of the TiN thin film layer at a plate thickness of 5 mm.

FIG. 15 is an explanatory diagram showing, as a comparative example, the relationship between the stimulus purity and the thickness of the TiN thin film layer at a plate thickness of 5 mm.

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-54-28321 (JP, A) JP-A-63-218513 (JP, A) JP-A-3-69531 (JP, A) JP-A-3-283 103339 (JP, A) JP-A-5-70178 (JP, A) JP-A-6-305777 (JP, A) JP-A-6-345488 (JP, A) (58) Fields investigated (Int. ⁶ , DB name) C03C 17/23 C03C 17/34

Claims (5)

(57) [Claims] 1. A glass plate for an architectural window having a thin film layer formed on the surface of a clear substrate and having a visible light transmittance of 67%.
86%, and the thin film layer has a thickness of 5 nm or more and 35 nm or less.
An oxide film mainly composed of TiO ₂ or a film thickness of 15 nm or more and 55 nm or less
An oxide film mainly composed of SnO ₂ below, having an average visible light reflectance of 10 to 30% between the glass surface and the film surface, a visible light reflectance difference between the glass surface and the film surface of 3.5% or less, a glass surface and On the membrane surface
A glass plate with improved livability, characterized in that the stimulus purity of reflected light is 5 to 25% . 2. A thin film layer is formed on a clear substrate surface.
Visible glass with a visible light transmittance of 67
~ 86%, wherein the thin film layer is the first layer from the surface of the glass plate.
TiO ₂ thin film layer as an eye, SnO ₂ thin film as a second layer on it
It consists of two layers, each layer having a thickness of 5 nm or more
30 nm or less, and the average visible light reflectance between the glass surface and the film surface
10-30%, difference of visible light reflectance between glass surface and film surface is 3.5% or less
Below, the stimulus purity of the reflected light on the glass surface and the film surface is 5
A glass plate with improved livability , characterized by being up to 25% . 3. A thin film layer is formed on a clear substrate surface.
Visible glass with a visible light transmittance of 67
~ 86%, wherein the thin film layer is the first layer from the surface of the glass plate.
SnO ₂ thin film layer as eye, TiO ₂ thin film as second layer on top
It consists of two layers, each layer having a thickness of 5 nm or more
35 nm or less, and the average visible light reflectance of the glass surface and the film surface
10-30%, difference of visible light reflectance between glass surface and film surface is 3.5% or less
Below, the stimulus purity of the reflected light on the glass surface and the film surface is 5
A glass plate with improved livability , characterized by being up to 25% . 4. The clear substrate has a thickness of 5 to 19 mm.
The glass plate with improved livability according to claim 1, 2 or 3, wherein: 5. A contractor having radio wave transparency.
A glass plate with improved livability according to claim 1, 2, 3 or 4 .