TW201539021A - Method for manufacturing curved glass plate provided with anti-glare film - Google Patents

Abstract

Provided is a method whereby a curved glass plate provided with an anti-glare film having high anti-glare properties can be suitably manufactured. In the present invention, a film formation step is performed for forming an anti-glare film (11) having a higher glass transition temperature (Tg) than a flat glass plate (10) on a principal face (10b) of the flat glass plate (10), and fabricating a flat glass plate (12) provided with an anti-glare film. In the present invention, a deformation step is performed for deforming the flat glass plate (12) provided with the anti-glare film while heating the same, and fabricating a curved glass plate (14) provided with the anti-glare film.

Description

Method for manufacturing glass curved plate with anti-glare film

The present invention relates to a method of manufacturing a glass curved plate with an anti-glare film.

In the past, a glass plate provided with an anti-glare film has been proposed as a front panel of a touch sensor (for example, refer to Patent Document 1). By using the glass plate with the anti-glare film as the front panel of the touch sensor, the reflection of the background can be suppressed, thereby improving the visibility. Also, by having the front panel include a glass sheet, a high strength front panel can be obtained.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] International Publication No. 2009/025289

In addition, from a design point of view, there is an urgent need to configure a curved touch sensor on a curved display. Further, in terms of further improving visibility, a curved touch sensor is urgently required. In order to achieve a highly visible, curved touch sensor, it is necessary to have a curved front panel with high anti-glare properties.

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a method for preferably producing a glass curved plate with an anti-glare film having high anti-glare property.

In the method for producing a glass curved plate with an anti-glare film according to the first aspect of the present invention, a film forming step is performed on a main surface of a glass plate, and a film transition temperature (Tg) is higher than a glass plate. The anti-glare film is used to make a glass plate with an anti-glare film. And a deformation step is performed, and the glass plate with the anti-glare film is heated and deformed to produce a glass curved plate with an anti-glare film. In the method for producing a glass curved plate with a first anti-glare film according to the present invention, an anti-glare film is formed on a glass flat plate before deformation. Therefore, an anti-glare film excellent in uniformity can be formed. Further, since the glass transition temperature (Tg) of the anti-glare film is higher than the glass transition temperature (Tg) of the glass plate, deformation of the anti-glare film or the like can be suppressed in the deformation step. For example, a glass curved plate with an anti-glare film having an anti-glare film having a high uniformity of surface roughness can be obtained. Therefore, according to the method for producing a glass curved plate with an anti-glare film according to the present invention, a glass curved plate with an anti-glare film having high anti-glare property can be preferably produced.

Further, in the antiglare film, generally, the higher the glass transition temperature (Tg), the more excellent the scratch resistance. Therefore, according to the method for producing a glass curved plate with an anti-glare film according to the present invention, it is possible to preferably produce a glass curved plate with an anti-glare film which is excellent in scratch resistance.

In the method for producing a glass curved plate with an anti-glare film according to the first aspect of the invention, the anti-glare film preferably contains cerium oxide. The reason for this is that the glass transition temperature (Tg) of the antiglare film containing cerium oxide is high.

In the method for producing a glass curved plate with an anti-glare film according to the present invention, a film forming step is performed, and an anti-glare film containing cerium oxide is formed on one main surface of the glass flat plate to form an anti-glare film. Glass plate. And a deformation step is performed, and the glass plate with the anti-glare film is heated and deformed to produce a glass curved plate with an anti-glare film. In the method for producing a glass curved plate with an anti-glare film according to the present invention, an anti-glare film is formed on a glass plate before deformation. Therefore, an anti-glare film excellent in uniformity can be formed. Further, since the antiglare film contains cerium oxide, the glass transition temperature (Tg) of the antiglare film is high, so that the deformation of the antiglare film or the like can be suppressed in the deformation step. For example, a glass curved plate with an anti-glare film having an anti-glare film having a high uniformity of surface roughness can be obtained. Therefore, according to the second method for producing a glass curved plate with an anti-glare film of the present invention, a glass curved plate with an anti-glare film having high anti-glare property can be preferably produced.

Further, the antiglare film containing cerium oxide is excellent in scratch resistance. Therefore, according to the present invention In the second method for producing a glass curved plate with an anti-glare film, a glass curved plate with an anti-glare film excellent in scratch resistance can be preferably produced.

The method for producing a glass curved plate of the first or second anti-glare film of the present invention preferably further includes a reinforcing step of reinforcing the glass curved plate with the anti-glare film. By performing the reinforcing step, a glass curved plate with an anti-glare film having a higher strength can be manufactured.

The method for producing a glass curved plate of the first or second anti-glare film of the present invention may be physically reinforced with a glass curved plate with an anti-glare film in the reinforcing step.

The method for producing a glass curved plate of the first or second anti-glare film of the present invention can also be physically reinforced by cooling the glass curved plate with the anti-glare film heated in the deformation step.

In the method for producing a glass curved plate of the first or second anti-glare film of the present invention, an anti-glare film may be formed by applying a coating liquid on one main surface of a glass flat plate in the film forming step.

In the method for producing a glass curved plate of the first or second anti-glare film of the present invention, the applied coating liquid may be fired in the deformation step.

In the method for producing a glass curved plate of the first or second anti-glare film of the present invention, the applied coating liquid may be heated in the film forming step, and heated to the film forming step in the deforming step. The temperature above the heating temperature.

The method for producing a glass curved plate of the first or second anti-glare film of the present invention may be in a state in which the glass plate with the anti-glare film is disposed on the molding die including the curved molding surface. Heating is performed to soften and deform the glass plate with the anti-glare film to obtain a glass curved plate with an anti-glare film.

In the method for producing a glass curved plate according to the first or second anti-glare film of the present invention, it is preferable that a glass flat plate with an anti-glare film is disposed in the deformation step in such a manner that the anti-glare film and the molding face face each other.

In each of the methods for producing the glass curved plate of the first or second anti-glare film of the present invention, an anti-glare film may be formed on the other main surface of the glass flat plate in the film forming step.

Each of the methods for producing the glass curved plate of the first or second anti-glare film of the present invention The thickness of the anti-glare film is preferably 1.5 μm or less.

In each of the methods for manufacturing the glass curved plate of the first or second anti-glare film of the present invention, in the deformation step, the glass curved plate with the anti-glare film may have a curvature in one direction and be opposite to The other direction of tilting in one direction also has a curvature to deform the glass plate with the anti-glare film.

According to the present invention, there can be provided a method of preferably producing a glass curved plate with an anti-glare film having high anti-glare property.

10‧‧‧ glass plate

10a‧‧‧1st main face

10b‧‧‧2nd main face

11‧‧‧Anti-glare film

12‧‧‧ glass plate with anti-glare film

13‧‧‧Forming mould

13a‧‧‧Forming surface

14‧‧‧ Glass plate with anti-glare film

15‧‧‧ glass curved plate

16‧‧‧Anti-glare film

S1‧‧‧ film forming step

S10‧‧‧ Coating step

S11‧‧‧ firing step

S12‧‧‧Pre-burning step

S12a‧‧‧ Degreasing step

S13‧‧‧ Cooling step

S14‧‧‧heating firing step

S21‧‧‧ Cooling step

S3‧‧‧ deformation steps

S31‧‧‧heating step

S32‧‧‧ deformation processing steps

S41‧‧‧ Cooling step

S5‧‧‧ reinforcement step

S51‧‧‧ heating step

S52‧‧‧ Reinforcement processing steps

S61‧‧‧ Cooling step

Fig. 1 is a schematic cross-sectional view showing a glass plate with an anti-glare film in the first embodiment.

Fig. 2 is a flow chart showing a manufacturing procedure of a glass curved plate with an anti-glare film according to the first embodiment.

Fig. 3 is a schematic cross-sectional view for explaining a deformation step in the first embodiment.

Fig. 4 is a schematic cross-sectional view showing a glass curved plate with an anti-glare film in the first embodiment.

Fig. 5 is a flow chart showing a manufacturing procedure of a glass curved plate with an anti-glare film in the second embodiment.

Fig. 6 is a flow chart showing a manufacturing procedure of a glass curved plate with an anti-glare film according to a third embodiment.

Fig. 7 is a flow chart showing a manufacturing procedure of a glass curved plate with an anti-glare film in the fourth embodiment.

Fig. 8 is a schematic cross-sectional view for explaining a deformation step in the fifth embodiment.

Fig. 9 is a schematic cross-sectional view showing a glass curved plate with an anti-glare film in a fifth embodiment.

Hereinafter, an example of a preferred embodiment for carrying out the invention will be described. However, the following embodiments are merely illustrative. The present invention is not limited to the following embodiments.

Further, in each of the drawings referred to in the embodiment and the like, substantially the same work is performed. The components of the energy can be referred to by the same symbols. Further, the drawings referred to in the embodiments and the like are described in the schema. There is a case where the ratio of the size of the object depicted in the drawing and the ratio of the size of the actual object are different. Even in the case of patterns, there are cases where the size ratio of the objects is different. The specific size ratio of the object should be judged by referring to the following description.

(First embodiment)

In the present embodiment, a method of manufacturing a glass disc with a reinforced anti-glare film will be described. The use of the reinforced glass disc with the anti-glare film produced in the present embodiment is not particularly limited. The glass curved plate with the reinforced anti-glare film manufactured in the present embodiment can be preferably used, for example, for a touch panel, an instrument panel of an automobile, or the like.

First, the glass plate 10 shown in Fig. 1 is prepared. The glass plate 10 has a first main surface 10a and a second main surface 10b.

The glass plate 10 can be any glass containing. When the glass plate 10 is physically reinforced, it is preferable to use a glass plate having a thermal expansion coefficient of 50 × 10 ^-7 /° C or more as the glass plate 10 . Specifically, it is preferable to use a thermal expansion coefficient of 50 × 10 . ^-7 / ° C ~ 120 × 10 ^-7 / ° C glass plate. Further, in the case where the glass flat plate 10 is chemically reinforced, it is preferable to use a glass plate containing 3% to 25% of an alkali metal oxide by mass% as a glass composition, and specifically, it is preferably used. A glass plate of 3% to 25% Li ₂ O+Na ₂ O.

The thickness of the glass plate 10 is not particularly limited. The thickness of the glass plate 10 can be, for example, about 0.3 mm to 15 mm.

Then, the glass flat plate 12 with the anti-glare film is formed by forming the anti-glare film 11 on the second main surface 10b of the glass flat plate 10 (step S1: film forming step). The film formation method of the anti-glare film 11 is not specifically limited. The anti-glare film 11 can be formed, for example, by a sputtering method, a chemical vapor deposition (CVD) method, or the like. In the present embodiment, as shown in FIG. 2, the anti-glare film 11 is formed by applying the coating liquid to the second glass plate 10. The main surface 10b (step S10: coating step) is dried to form a coating layer, and the coating layer is fired (step S11: baking step). Therefore, in the present embodiment, the film forming step (step S1) has steps S10 and S11.

The coating liquid is applied and dried to form a coating layer, and the coating layer is fired, whereby the antiglare film 11 having a high glass transition temperature (Tg) can be easily produced.

After the film forming step (step S1), a cooling step of cooling the glass flat plate 12 with the anti-glare film is performed (step S21).

The anti-glare film 11 contains an amorphous material. The anti-glare film 11 may contain only amorphous material, and may also contain amorphous and crystalline. The anti-glare film 11 is preferably made to contain only amorphous material. Since the anti-glare film 11 contains amorphous, it has a glass transition temperature (Tg). The glass transition temperature (Tg) of the anti-glare film 11 is higher than the glass transition temperature (Tg) of the glass plate 10.

The material of the anti-glare film 11 is not particularly limited as long as the glass transition temperature (Tg) of the anti-glare film 11 is higher than the glass transition temperature (Tg) of the glass plate 10. The anti-glare film 11 may include, for example, cerium oxide. The anti-glare film 11 may also contain a ruthenium oxide film.

The thickness of the anti-glare film 11 can be appropriately set, for example, according to characteristics such as optical characteristics required for the anti-glare film 11. The thickness of the anti-glare film 11 can be set to 1.5 μm or less.

Then, the glass plate 12 with the anti-glare film is heated and deformed (deformation step: step S3). Specifically, in the present embodiment, as shown in FIG. 3, first, a glass flat plate 12 with an anti-glare film is placed on the molding surface 13a of the molding die 13. The molding surface 13a has a curved shape. The molding surface 13a may be, for example, a spherical shape, an elliptical spherical shape, a parabolic shape or the like. In this state, the glass flat plate 12 with the anti-glare film is heated (heating step: step S31) to be deformed into a shape along the forming surface 13a (deformation processing step: step S32). Thereby, the glass curved plate 14 with the anti-glare film shown in FIG. 4 was produced.

In the deformation step (step S3), it is preferable that the glass flat plate 12 to which the anti-glare film is attached is disposed on the molding surface 13a so that the anti-glare film 11 faces the molding surface 13a. Thereby, the antiglare film 11 having a relatively high glass transition temperature (Tg) is in contact with the forming surface 13a, and the glass transition can be suppressed. The glass plate 10 having a relatively low temperature (Tg) is in contact with the forming surface 13a. Therefore, it is preferable to prevent the glass flat plate 10 from being burned on the forming surface 13a.

Further, the shape of the glass curved plate 14 with the anti-glare film is not particularly limited. The glass curved plate 14 with the anti-glare film may have, for example, a shape having a curvature in one direction and a curvature in the other direction different from one direction. The glass curved plate 14 with an anti-glare film may be, for example, a spherical shape, an elliptical spherical shape, a parabolic shape, or the like, and may have a first planar portion and a second planar portion, and a curved portion that connects the first and second portions. Flat section.

After the deformation step of step S3 is performed, a cooling step of cooling the glass curved plate 14 with the anti-glare film is performed (step S41).

Then, as shown in FIG. 2, a reinforcing step of reinforcing the glass curved plate 14 with the anti-glare film is performed (step S5). In the reinforcing step (step S5), specifically, first, after the heating step of heating the glass curved plate 14 with the anti-glare film (step S51), a reinforcing processing step (step S52) is performed. The reinforcing method of the glass curved plate 14 with the anti-glare film is not particularly limited. For example, in the reinforcing processing step of step S52, the glass curved plate 14 with the anti-glare film may be chemically reinforced by ion exchange, or may be physically reinforced. In the present embodiment, specifically, in the reinforcing processing step of step S52, the glass curved plate 14 with the anti-glare film is physically reinforced. That is, in the reinforcing step of step S52, physical reinforcement is performed by quenching the glass curved plate 14 with the anti-glare film.

Further, physical reinforcement is also referred to as thermal reinforcement, which means that the compressive stress layer is formed on the surface of the glass material by quenching the heated glass material, thereby reinforcing. In physical reinforcement, it includes air-cooling reinforcement and liquid cooling reinforcement. Physical reinforcement is superior to chemical reinforcement. Therefore, in the reinforcing step (step S5), physical reinforcement is preferably performed.

After the reinforcing step of step S5, a cooling step of cooling the glass curved plate 14 with the anti-glare film to room temperature is performed (step S61).

Further, in the case of reinforcing the glass sheet, it is generally necessary to heat the glass sheet regardless of the method of reinforcing the glass sheet. Therefore, for example, glass formed by etching or the like When the uneven layer of the surface layer of the panel constitutes the antiglare layer, if the antiglare layer is provided before the reinforcement, the antiglare layer is deformed in the reinforcing step, and the antiglare effect is lowered. Further, the case where the anti-glare film is provided on the glass plate is similarly deformed in the deformation step accompanying the heating, and generally, an anti-glare film is formed after the reinforcing. Moreover, in the case of producing a reinforced glass curved plate from a glass plate, the heating temperature in the deformation step is higher than the heating temperature in the reinforcing step. Therefore, if the deformation step is performed after the reinforcing step, the reinforcement of the glass sheet is released. According to the above, if a glass curved plate with an anti-glare film is to be produced, the deformation step is usually first performed, and thereafter, the reinforcing step and the film forming step of the anti-glare film are sequentially performed. However, in the case where an anti-glare film is provided on the curved surface, the anti-glare property of the anti-glare film is different between the central portion and the peripheral portion. Therefore, it is difficult to achieve high anti-glare characteristics in both the center portion and the peripheral portion.

In the present embodiment, the antiglare film 11 having a glass transition temperature (Tg) higher than that of the glass flat plate 10 is formed. Therefore, the anti-glare film 11 is difficult to deform in the deformation step or the reinforcing step. Therefore, after the anti-glare film 11 is formed on the glass flat plate 10, the deformation step and the reinforcing step can be performed. Therefore, it is possible to produce a glass curved plate 14 with an anti-glare film having an anti-glare film 11 having high anti-glare characteristics in both the central portion and the peripheral portion.

Further, since the glass curved plate 15 is reinforced, it has a high strength. The inorganic antiglare film having a glass transition temperature (Tg) higher than that of the glass plate 10 has high strength and excellent scratch resistance. According to the above, according to the production method of the present embodiment, the glass curved plate 14 with the anti-glare film having high anti-glare property, high strength, and excellent scratch resistance can be produced.

Furthermore, it is also considered to form an anti-glare film after the reinforcing step. However, if the heating temperature in the firing step of the anti-glare film is increased, the reinforcement is released. Therefore, in this case, it is necessary to lower the heating temperature in the firing step of the anti-glare film. Therefore, it is difficult to form an anti-glare film which is high in strength and excellent in scratch resistance. In the present embodiment, the reinforcing step is performed after the anti-glare film 11 is formed. Therefore, the anti-glare film 11 can be fired at a high temperature. Therefore, the anti-glare film 11 which is high in strength and excellent in scratch resistance can be formed.

The anti-glare film 11 preferably contains oxygen from the viewpoint of achieving more excellent scratch resistance. It is more preferable to contain ruthenium oxide film.

From the viewpoint of achieving higher anti-glare properties, the heating temperature in the firing step is preferably 200 ° C or higher and the softening point (Ts) of the anti-glare film 11 is equal to or lower. Moreover, it is preferable that the heating temperature in each of the deformation step and the reinforcing step is equal to or lower than the softening point (Ts) of the anti-glare film 11, and more preferably set to be lower than the glass transition temperature (Tg), and more preferably set to It is lower than the glass transition temperature (Tg) by a temperature lower by 100 °C.

Further, for example, if the anti-glare film 11 is too thick, the compressive stress depth (DOL) of the compressive stress layer formed in the reinforcing step or the compressive stress (CS) in the compressive stress layer may be on the first main surface 10a side and the first 2 The main surface 10b side is different. In this case, there is a case where the glass curved plate 14 with the anti-glare film is not deformed as expected due to the compressive stress (CS), and it is difficult to manufacture the glass curved plate 14 with the anti-glare film having high shape accuracy. Therefore, the thickness of the anti-glare film 11 is preferably 1.5 μm or less, and more preferably 1.0 μm or less. However, if the anti-glare film 11 is too thin, there is a case where a sufficiently excellent anti-glare effect cannot be obtained. Therefore, the thickness of the anti-glare film 11 is preferably 0.3 μm or more.

Hereinafter, other examples of preferred embodiments of the present invention will be described. In the following description, members having functions substantially the same as those of the above-described first embodiment will be referred to by the same reference numerals, and description thereof will be omitted.

(Second embodiment)

Fig. 5 is a flow chart showing a manufacturing procedure of a glass curved plate with an anti-glare film in the second embodiment. As shown in Fig. 5, in the second embodiment, after the coating step (step S10), the coating layer is pre-fired (pre-baking step: step S12). Thereafter, after supercooling in step S13, in step S14, baking is performed by heating to a temperature higher than the heating temperature at the time of pre-baking. By doing so, the anti-glare film 11 can be fired in step S14. Therefore, the anti-glare film 11 of higher strength can be formed.

In the present embodiment, after the step S14, the cooling step is not performed, and the deformation step of the step S32 is performed. Therefore, it is not necessary to set the addition between step S14 and step S32. Hot step.

(Third embodiment)

Fig. 6 is a flow chart showing a manufacturing procedure of a glass curved plate with an anti-glare film according to a third embodiment. As shown in Fig. 6, in the third embodiment, after the coating step of step S10, a degreasing step of removing the organic component contained in the coating liquid is performed (step S12a). Then, after the step S12a, after the supercooling is performed in the step S13, the baking is performed in the step S14. In this case, the heating temperature in the step S12a is lower than the heating temperature in the above step S12. Therefore, the energy required for the manufacture of the glass curved plate 14 with the anti-glare film can be reduced. Therefore, the manufacturing cost of the glass curved plate 14 with the anti-glare film can be reduced.

(Fourth embodiment)

Fig. 7 is a flow chart showing a manufacturing procedure of a glass curved plate with an anti-glare film in the fourth embodiment. As shown in Fig. 7, in the present embodiment, after the coating step of step S10, a heating step (step S14) is performed. Thereafter, without performing cooling, the deformation step of step S32 is directly performed, or further heated, and the deformation step of step S32 is performed. Thereafter, the reinforcing processing step of step S52 is performed without cooling. By doing so, the number of times the heating step is performed can be reduced. Therefore, the glass curved plate 14 with the anti-glare film can be easily and economically manufactured in a small number of steps.

(Fifth Embodiment)

Fig. 8 is a schematic cross-sectional view for explaining a deformation step in the fifth embodiment. Fig. 9 is a schematic cross-sectional view showing a glass curved plate with an anti-glare film in a fifth embodiment.

As shown in FIG. 8 and FIG. 9, in the fifth embodiment, the anti-glare film 11 is formed on the second main surface 10b of the glass flat plate 10, and the anti-glare film 16 is also formed on the first main surface 10a. By doing so, it is possible to manufacture a glass curved plate 14 with an anti-glare film having more excellent anti-glare properties.

Further, each of the compressive stress layer formed on the first main surface 10a side and the compressive stress layer formed on the second main surface 10b side in the reinforcing step may have a compressive stress depth (DOL) and a compressive stress (CS). The difference is narrowed. Therefore, it is possible to manufacture an anti-glare film with higher shape accuracy. Glass curved plate 14.

(Sixth embodiment)

In the above embodiment, an example in which the film forming step S1, the deforming step S3, and the reinforcing step S5 are performed has been described. For example, in addition to the film forming step S1, the deforming step S3, and the reinforcing step S5, the printing step of the printed film may be further performed. Specifically, for example, a light-shielding film (black mask) for printing the peripheral portion of the cover member of the display panel or a printing step for adding a decorative decorative film may be performed.

Hereinafter, in the sixth embodiment, an example of a printing step of performing a printing light-shielding film will be described. The printing step can be carried out, for example, in the following manner. First, a black inorganic pigment of Fe-Co-Cr type and a polyoxynoxy resin are mixed to prepare a slurry. This slurry was printed on the peripheral portion of the first main surface 10a of the glass flat plate 10 by a screen printing method. Then, the printed film is dried and heat-treated at a temperature of 100 ° C to 500 ° C for 1 hour, whereby a light-shielding film (inorganic pigment film) can be formed. The thickness of the light shielding film can be, for example, 10 μm. The light shielding film may be formed on the same surface as the anti-glare film 11, but is preferably formed on the surface opposite to the anti-glare film 11.

The average transmittance of light of the light-shielding film in the range of 400 nm to 700 nm is preferably less than 0.3%.

The pigment to be used may be either an organic pigment or an inorganic pigment, but is more preferably an inorganic pigment excellent in heat resistance.

Specific examples of the inorganic pigment include white pigments such as TiO ₂ , ZrO ₂ , and ZrSiO _{4 ,} and blue pigments such as Co-Al-Zn, Co-Al-Si, and Co-Al-Ti, and Co-. A green pigment such as an Al-Cr system or a Co-Ni-Ti-Zn system, a Ti-Sb-Cr system, a Ti-Ni yellow pigment, a red pigment such as a Co-Si system, a Ti-Fe-Zn system, or a Fe-Zn system. Brown pigment such as Fe-Ni-Cr system or Zn-Fe-Cr-Al system, Fe-Mn system, Fe-Co-Cr system, Fe-Mn-Al system, Cu-Cr system, Cu-Cr-Fe system And black pigments such as Cu-Cr-Mn. These inorganic pigments may be used singly or in combination. In particular, if it is a component contained in a glass composition such as TiO ₂ , ZrO ₂ or ZrSiO ₄ , it is not colored in glass even if it is remelted, and can be reused.

The printing paint can be prepared, for example, by mixing a polyimide-based resin, a (poly)polyamine-based resin, a fluorine-based resin, or the like, which is a resin having high heat resistance other than the polyoxynoxy resin, with a polyfluorene-based resin.

The printing step can be performed, for example, before the film forming step S1, the deforming step S3, and the reinforcing step S5 (printing step → film forming step S1 → deforming step S3 → reinforcing step S5).

The printing step can be performed, for example, between the film forming step S1 and the deforming step S3 (film forming step S1 → printing step → deformation step S3 → reinforcing step S5).

The printing step can be performed, for example, between the deforming step S3 and the reinforcing step S5 (film forming step S1 → deforming step S3 → printing step → reinforcing step S5).

(variation)

In the first embodiment and the fourth embodiment, an example in which the reinforcing step (step S5) is performed has been described. However, the invention is not limited thereto. For example, in each of the first and fourth embodiments, the reinforcing step (step S5) may be omitted.

(Example)

A glass curved plate with an anti-glare film was produced in accordance with the flow chart shown in Fig. 2 described in the first embodiment. Specifically, a glass curved plate with an anti-glare film is produced in the following manner.

Step S10 (coating): A solution containing SiO ₂ was applied by a spray method on a glass plate (T2X1 (unreinforced glass plate) manufactured by Nippon Electric Glass Co., Ltd., 100 mm × 270 mm × 0.55 mm).

Step S11 (baking): Next, a glass plate coated with a liquid containing SiO ₂ was fired at 180 °C.

Step S21 (Cooling): The glass plate which has been fired in step S11 is left to be cooled, and a glass plate with an anti-glare film is prepared.

Step S31 (heating): A glass plate with an anti-glare film is placed on the molding surface of the spherical molding die, and heated to 800 ° C in an air atmosphere.

Step S32 (deformation processing): The glass flat plate with the anti-glare film is softened by heating in step S31, and is deformed by its own weight into a shape along the molding surface.

Step S41 (Cooling): A glass curved plate with an anti-glare film is produced by placing and cooling the glass plate with the anti-glare film deformed in step S32.

Step S51 (heating): The glass curved plate with the anti-glare film was heated to 450 ° C in an air atmosphere.

Step 52 (Reinforcement): Chemical strengthening was carried out by immersing the glass plate with the anti-glare film heated in the step S51 in a KNO ₃ molten salt at 450 ° C for 3 hours.

Step S61 (Cooling): The glass reinforcing curved plate with the chemically reinforced anti-glare film in step S52 is placed and cooled.

By performing the above steps, it is possible to produce a glass-reinforced curved sheet with an anti-glare film which is excellent in uniformity of surface roughness of the anti-glare film and excellent in anti-glare property.

S1‧‧‧ film forming step

S10‧‧‧ Coating step

S11‧‧‧ firing step

S21‧‧‧ Cooling step

S3‧‧‧ deformation steps

S31‧‧‧heating step

S32‧‧‧ deformation processing steps

S41‧‧‧ Cooling step

S5‧‧‧ reinforcement step

S51‧‧‧ heating step

S52‧‧‧ Reinforcement processing steps

S61‧‧‧ Cooling step

Claims (14)

A method for manufacturing a glass curved plate with an anti-glare film, comprising: a film forming step of forming a film on a main surface of a glass plate, wherein a film transition temperature (Tg) is higher than an anti-glare film of the glass plate a glass plate with an anti-glare film; and a deformation step, wherein the glass plate with the anti-glare film is heated and deformed to produce a glass plate with an anti-glare film. A method of producing a glass curved plate with an anti-glare film according to claim 1, wherein the anti-glare film contains cerium oxide. A method for manufacturing a glass curved plate with an anti-glare film, comprising: a film forming step of forming an anti-glare film containing cerium oxide on one main surface of a glass plate, and preparing a glass plate with an anti-glare film; And a deforming step, wherein the glass plate with the anti-glare film is heated and deformed to produce a glass curved plate with an anti-glare film. The method for producing a glass curved plate with an anti-glare film according to any one of claims 1 to 3, further comprising the step of reinforcing the glass curved plate with the anti-glare film. The method for producing a glass curved plate with an anti-glare film according to claim 4, wherein in the reinforcing step, the glass curved plate with the anti-glare film is physically reinforced. The method for producing a glass curved plate with an anti-glare film according to claim 5, wherein the physical reinforcement is performed by cooling the glass curved plate with the anti-glare film heated in the deformation step. The method for producing a glass curved plate with an anti-glare film according to any one of claims 1 to 6, wherein in the film forming step, the coating liquid is applied to one main surface of the glass plate. The above anti-glare film is formed. A method of producing a glass curved plate with an anti-glare film according to claim 7, wherein in the deforming step, the applied coating liquid is fired. The method for producing a glass curved plate with an anti-glare film according to claim 7 or 8, wherein in the film forming step, the applied coating liquid is heated, and in the deforming step, heating to the above-mentioned The temperature above the heating temperature in the membrane step. The method for producing a glass curved plate with an anti-glare film according to any one of claims 1 to 9, wherein in the deforming step, the anti-glare film is disposed on the molding die including the curved molding surface The glass plate with the anti-glare film is softened and deformed by heating in the state of the glass plate to obtain the glass plate with the anti-glare film. A method of producing a glass curved plate with an anti-glare film according to claim 10, wherein in the deforming step, the glass plate with the anti-glare film is disposed such that the anti-glare film faces the molding surface. The method for producing a glass curved plate with an anti-glare film according to any one of claims 1 to 11, wherein in the film forming step, an anti-glare film is formed on the other main surface of the glass plate. The method for producing a glass curved plate with an anti-glare film according to any one of claims 1 to 12, wherein the anti-glare film has a thickness of 1.5 μm or less. The method for producing a glass curved plate with an anti-glare film according to any one of claims 1 to 13, wherein in the deforming step, the glass curved plate with the anti-glare film has a curvature in one direction and is opposite to the above The glass plate with the anti-glare film is deformed in such a manner that the direction of inclination in the other direction also has a curvature.