JP2016043744A - Window pane and manufacturing method of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a window pane which hardly damages the neighborhood of an upper edge of the window pane, can prevent the window pane from being stained and can prevent a contact part of an upper frame of a door from being damaged, and to provide a manufacturing method of the window pane.SOLUTION: A window pane in which a door of an automobile can be opened and closed and an upper edge is brought into contact with a contact part of an upper frame of the door includes a first area having a prescribed width from the upper edge and a second area adjacent to a lower edge of the first area. Therein, the prescribed width is larger than a width to be brought into contact with the contact part, a water-repellent film is formed on one side surface, on the other side surface, a part of the water-repellent film is formed so as to infiltrate to at least a part of the first area of the other side surface from the one side surface and a functional film is formed on the second area on the other side surface of the window pane.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a window glass and a manufacturing method thereof.

  In recent years, various functional films such as an ultraviolet absorbing film are formed on a window glass attached to an automobile, and the added value as a window glass is improved. However, the window glass attached to the door so as to be openable and closable has a problem that if a functional film is formed over the entire surface, the upper side is damaged. In other words, when the window glass is closed, the vicinity of the upper side of the window glass comes into contact with a contact portion such as a glass run provided on the upper part of the door frame, but the functional film is rubbed against the contact portion, resulting in scratches. There is a problem that the appearance is deteriorated.

  On the other hand, for example, in the window glass described in Patent Document 1, a non-application region where a functional film is not applied is formed near the upper side, and a functional film is applied below the non-application region. And the width | variety of a non-application | coating area | region is made larger than the width | variety accommodated in a storage part, and it prevents that the part to which the functional film is apply | coated is not stored in a storage part, and is damaged. .

JP 2014-111453 A

  However, the window glass has a problem that dirt is easily generated although the upper side that contacts the contact portion is not scratched. For example, when a car is washed, since the window glass is closed, the portion exposed to the outside of the vehicle can be cleaned, but the vicinity of the upper side stored in the storage unit cannot be cleaned. Therefore, it is necessary to wipe off dirt only near the upper side of the window glass, resulting in a new problem that maintenance is troublesome. And when dirt arises near the upper side of a window glass, there exists a possibility that a crack may arise in the contact part rubbed with this.

  The present invention has been made in order to solve the above-mentioned problem. It is difficult to damage the vicinity of the upper side of the window glass, can prevent the stain, and the contact portion of the upper frame of the door is damaged. An object is to provide a window glass and a method of manufacturing the same.

  A window glass according to the present invention is a window glass that can be opened and closed at a door of an automobile and has an upper side in contact with a contact portion of an upper frame of the door, and a first region having a predetermined width from the upper side, and the first window A second region adjacent to a lower edge of one region, the predetermined width is larger than a width contacting the contact portion, and a water-repellent film is formed on one surface; , A part of the water repellent film is formed from the one surface to at least a part of the first region of the other surface, and in the second region of the other surface of the window glass, A functional film is formed.

  In the window glass, the upper frame of the door includes the storage portion in which the upper side is stored and the contact portion is incorporated, and the predetermined width is smaller than a width stored in the storage portion. Can do.

  In each of the window glasses, the water repellent film can be formed by a spray coating method.

  In each of the window glasses, the functional film can be formed by applying a functional film solution by a flow coating method.

  Each said window glass can be arrange | positioned inside a vehicle, the said other surface curves in a concave shape.

  A method of manufacturing a window glass according to the present invention is a method of manufacturing a window glass that can be opened and closed at a door of an automobile and whose upper side is in contact with a contact portion of an upper frame of the door, and has a predetermined width from the upper side. Preparing a window glass having one area and a second area adjacent to the lower edge of the first area, wherein the predetermined width is larger than a width contacting the contact portion; and Forming a functional film on the second region of the other surface; forming a water repellent film on one surface of the window glass; and part of the water repellent film on the window glass plate Forming a film around at least a part of the first region on the other surface.

  According to the present invention, the vicinity of the upper side of the window glass is hard to be damaged, dirt can be prevented, and further, the contact portion of the upper frame of the door can be prevented from being damaged.

It is a front view of one Embodiment of the window glass which concerns on this invention. It is sectional drawing of a laminated glass. It is a front view of a door. FIG. 4 is a sectional view taken along line AA in FIG. 3. It is the schematic of a coating device. It is a figure explaining the flow coat method. It is a figure explaining the spray coat method. It is the schematic which shows the test method in an Example.

  Hereinafter, an embodiment of a window glass according to the present invention will be described with reference to the drawings. The window glass which concerns on this embodiment is a window glass which can be opened and closed in the door of a motor vehicle, and is a window glass by which an upper side is accommodated in the upper frame of a door. And this window glass is comprised by the glass plate by which the water-repellent film was formed in the surface outside the vehicle, and the functional film was formed in the surface inside the vehicle. However, the water-repellent film is also formed on a part of the inner surface of the vehicle. Hereinafter, this window glass will be described in detail.

<1. Glass plate>
As shown in FIG. 1, the glass plate constituting the window glass is composed of a pair of side edges 1 and 2 extending in the vertical direction, an upper side 3 connecting upper ends of both side edges 1 and 2, and both side edges 1 and 2. Are formed in a rectangular shape having a lower edge 4 connecting the lower ends of the two edges. Here, the side disposed on the right side in FIG. 1 is referred to as a first side 1, and the side disposed on the left side is referred to as a second side 2. In the window glass according to the present embodiment, the first side 1 is longer than the second side 2, and the second side 2 is disposed on the front side of the automobile. The upper side 3 is inclined downward from the first side 1 toward the second side 2.

  This window glass can be variously configured, for example, it can be composed of laminated glass having a plurality of glass plates, or can be composed of a single glass plate. In the case of using laminated glass, for example, it can be configured as shown in FIG. FIG. 2 is a sectional view of the laminated glass.

  As shown in the figure, the laminated glass includes an outer glass plate 11 and an inner glass plate 12, and a resin intermediate film 13 is disposed between the glass plates 11 and 12. As the outer glass plate 11 and the inner glass plate 12, known glass plates can be used, and they can be formed of heat ray absorbing glass, general clear glass, or green glass. However, these glass plates need to realize visible light transmittance in accordance with the safety standards of the country where the automobile is used. On the other hand, the intermediate film 13 may be formed of a single layer or a plurality of layers. In the case of forming with a plurality of layers, for example, a structure in which a resin layer having low rigidity is sandwiched between resin layers having high rigidity can be employed.

  Moreover, the glass plate used here may be flat or curved. However, when it is curved, the inner surface of the vehicle is formed in a concave shape.

<2. Application area>
As described above, in the window glass according to the present embodiment, the water repellent film is formed over the entire surface on the vehicle outer side. However, since the vicinity of the lower end where the regulator is attached is always hidden behind the door frame, a water-repellent film may not be formed on this portion.

  Further, as shown in FIG. 1, the inner surface of the window glass is divided into a first region 101 along the upper side 3 and a second region 102 adjacent to the first region 101 and positioned below the first region 101. It has been. The width of the first area 101, that is, the distance d from the upper side 3 of the window glass is an area that is accommodated in the accommodating portion of the upper frame of the door to be described later, and is preferably 2 to 50 mm, for example, 5 to 30 mm. More preferably.

  In the first region 101, the above-described water-repellent film is formed around the vehicle outer surface. However, this water-repellent film does not need to be applied to the entire first region 101, and may be formed at least along the upper side 3 of the window glass. Here, “deposited at least along the upper side 3 of the window glass” means from the viewpoint of slidability and antifouling properties, which are problems of the present invention, on the vehicle outer surface and the vehicle inner surface. Only the edge part which straddles the surface may be formed, and it includes that the film is formed on a part of a part of about 2 to 3 mm from the edge part to the inner surface. On the other hand, a functional film is formed in the second region 102. The functional film does not need to be formed on the entire surface of the second region 102, but may not be formed, for example, near the lower side 4 or both sides 1 and 2 of the window glass. Note that the water-repellent film that wraps around from the vehicle outer surface may wrap around not only the first region 101 but also from both sides 1 and 2 and the lower side of the window glass to the vehicle inner surface.

<3. Water repellent film>
The water repellent film is formed on the outer surface of the glass plate. The composition of the water repellent film is not particularly limited. For example, the water repellent film can be formed using the coating liquid described in Japanese Patent No. 3984426. Specifically, a fluoroalkyl group as a water-repellent functional group and an organosilane containing a hydrolyzable group can be used.

  In addition, the film forming method of such a water repellent film is not particularly limited, and dipping method, spin coating method, roll coating method, flow coating method, spray method, spray coating method, reverse coating method, flexo method, printing method Or a brushing method (rubbing method) etc. can be employ | adopted, Furthermore, these can also be combined suitably.

  The film thickness of the water repellent film is, for example, preferably 0.1 to 500 nm, and more preferably 1 to 100 nm.

<4. Functional membrane>
The functional film is a film to which a functional material for imparting a function to the glass plate is added. As the functional film, for example, an ultraviolet absorbing film, an infrared (IR) absorbing film, an antifogging film, a water repellent film, an antifouling film, a low reflection film, an electromagnetic shielding film, or a colored film can be used.

  The method for forming the functional film is not particularly limited, and is not particularly limited in the same manner as the method for forming the water-repellent film. The dipping method, the spin coating method, the roll coating method, the flow coating method, and the spray method are used. A spray coating method, a reverse coating method, a flexo method, a printing method, a brush coating method (rubbing method), or the like can be adopted, and these can be appropriately combined.

  The film thickness of the functional film varies depending on the type of film. For example, when the ultraviolet absorbing film is a functional film, it is preferably 0.5 to 10 μm, and preferably 1 to 5 μm. Is more preferable.

<5. Door>
Then, the door to which the said window glass is attached is demonstrated. The door according to the present embodiment is connected to a door main body 51 that is attached to the vehicle body via a hinge so as to be opened and closed, a decorative cover (not shown) attached to the inside of the door main body 51, and an upper portion of the door main body 51. Window frame portion (upper frame) 52.

  The window frame portion 52 includes a pair of side frames 521 and 522 that extend upward from both sides of the door main body 51, and an upper frame 523 that connects the upper ends of the side frames 521 and 522 and extends substantially horizontally. And inside the both-sides frame 521, the guide groove (illustration omitted) in which a window glass fits is formed. Run channels (not shown) extending into the interior space of the door main body 51 are connected to the lower ends of these guide grooves, and these run channels guide the raising and lowering of the window glass together with the guide grooves.

  Further, in the window frame portion 52, a glass run for preventing entry of rain or the like and for soundproofing is attached to a gap between the window glass and the side frames 521, 522 and the upper frame 523.

  Here, an example of the glass run arranged on the upper frame of the window frame portion 52 will be described with reference to FIG. FIG. 4A is a cross-sectional view taken along line AA in FIG. As shown in the figure, the glass run 7 includes a long base 71 fitted into the upper frame 523, and the upper side 3 of the closed window glass is in contact with the lower end surface of the base 71. . The base 71 is connected to a plate-like inner portion 72 extending downward from the vehicle inner end and a plate-shaped outer portion 73 extending downward from the vehicle outer end so as to sandwich the window glass. ing. The base 71, the inner part 72, and the outer part 73 form a storage part in which the upper side 3 of the window glass is stored, and cannot be seen from the outside. The length of the inner part 72 in the vertical direction is longer than that of the outer part 73. Here, the width D1 of the storage portion constituted by the inner portion 72 is larger than the width d of the first region. In addition, let the width | variety D1 in which the window glass by a storage part is accommodated be a width | variety by the longer one of the outer side part 73 and the inner side part 72. FIG. In addition, as shown in FIG. 4B, when a part of the upper frame 523 of the window frame 53 extends below the glass run 7 so that the window glass cannot be seen from the outside, This portion of 523 corresponds to the storage portion of the present invention. In this case, the width D1 extends to the lower end of the upper frame 523.

  Further, an inner abutting portion 721 extending upward toward the window glass side is connected to the lower end portion of the inner portion 72, and similarly, the lower end portion of the outer portion 73 is also directed upward toward the window glass. An extending outer abutting portion 731 is connected. Near the upper ends of the inner contact portion 721 and the outer contact portion 731 are in contact with the vehicle inner surface and the vehicle outer surface of the window glass, and the window glass moves up and down so that each surface becomes the inner contact portion. 721 and the outer contact portion 731 are rubbed. The portion where the inner contact portion 721 and the outer contact portion 731 are in contact with the window glass is located inside the storage portion, and when the window glass is raised and closed, the upper side 3 enters the storage portion. After that, it comes into contact with the inner contact portion 721 and the outer contact portion 731. Here, the width D2 of the window glass rubbed by the inner contact portion 721 is smaller than the width d of the first region. The inner contact portion 721 and the outer contact portion 731 correspond to the contact portion of the present invention. The width D2 of the window glass to be rubbed is the width of the longer one of the outer contact portion 731 and the inner contact portion 721.

  In the glass run 7, the base 71, the inner part 72, the outer part 73, the inner contact part 721, and the outer contact part 731 described above are integrally formed of an elastic material such as rubber.

<6. Example of film formation method>
In the window glass according to the present embodiment, first, a functional film is formed on the second region 102 on the inner surface of the vehicle, and then a water repellent film is applied on the outer surface of the vehicle. A part of the water-repellent film goes around the inner surface of the vehicle and is formed in the first region 101 or the like. Hereinafter, an example of a method for forming the functional film and the water-repellent film will be described.

<6.1 Example of functional film forming method>
Hereinafter, a film forming method using a flow coating method will be described as an example of a functional film forming method. First, a coating apparatus for coating a functional film coating liquid (hereinafter referred to as a functional liquid) will be described with reference to FIG. FIG. 5 is a side view schematically showing the coating apparatus.

  As shown in FIG. 5A, the coating device 6 includes an injection unit 61 that injects a functional liquid, a robot arm 62 that moves while supporting the injection unit 61, and a blower unit that blows air to the window glass G ( (Not shown).

  The injection unit 61 includes a nozzle 611 that faces the window glass G and a base 612 that supports the nozzle 611. The base 612 includes a tube member 64 formed of rubber or the like that supplies a functional liquid. It is connected. The tube member 64 supplies the functional liquid delivered from a pump (not shown) that delivers the functional liquid to the injection unit 61. The nozzle 611 and the tube member 64 communicate with each other through the base 612, and the functional liquid supplied by the tube member 64 is ejected from the nozzle 611.

  The robot arm 62 supports the injection unit 61 and can be moved three-dimensionally in the vertical and horizontal directions. Further, the blower unit is a unit that is configured by, for example, one or a plurality of fans and blows air to a portion where the functional liquid is injected.

  Next, a method for applying the functional liquid by the application device 6 will be described. First, the window glass G to be applied with the functional liquid is placed, for example, in a standing state, and the vehicle inner surface on which the functional liquid is applied is arranged facing the nozzle 611. At this time, the surface of the window glass G outside the vehicle is inclined by an angle D from the vertical direction. Then, the functional liquid ejected from the nozzle 611 is applied so as to follow a locus as shown in FIG. In addition, when the window glass G is curving, as shown in FIG.5 (b), the tangent line E in the center point X of the length L of the up-down direction of the window glass G, and the line K extended in a perpendicular direction Is the angle D described above. The angle D is preferably -30 to 15 degrees. Further, the inventor makes the flow of the functional liquid better when the angle D is smaller than 0 degrees, and therefore makes the boundary line between the first area 101 and the second area 102 coated with the functional liquid linear. Therefore, it was found that the film can be formed with good appearance. From this viewpoint, when the window glass is curved, the angle D shown in FIG. 5B is more preferably -15 to 0 degrees.

  First, the robot arm 62 is driven, and the nozzle 611 of the ejection unit 61 is moved to a position where the functional liquid hits the application start region Ra when the functional liquid is ejected. When the functional liquid is ejected from the nozzle 611 to the application start region Ra, the nozzle 611 is moved upward. As a result, the functional liquid is applied along the first side 1. When the application position reaches the region Rb, which is the upper end of the second region 102, the nozzle 611 is moved along the upper edge L (the boundary between the first region and the second region) of the second region 102. At this time, the functional liquid ejected along the upper edge L flows down, whereby the functional liquid is applied to the second region 102. Therefore, it is possible to make the functional liquid go around the portion where the functional liquid is not directly injected, and the amount of the functional liquid used for applying the functional liquid to the window glass G can be reduced.

  When the nozzle 611 reaches the region Rc on the second side 2, the nozzle 611 is moved downward and the functional liquid is applied along the second side 2. Thus, when the application position of the functional liquid reaches the region Rd near the lower end of the second side 2, the ejection of the functional liquid from the nozzle 611 is stopped. When applying such a functional liquid, air is blown onto the glass surface by the blower unit, thereby drying the functional film formed on the glass surface. In this way, the functional film is applied to the second region 102 on the inner surface of the window glass.

<6.2 Example of film formation method of water repellent film>
Next, a spray coating method will be described as an example of the water-repellent film method.

  The film formation of the water repellent film using this spray coating method is performed in the following film forming chamber. As shown in FIG. 7, a spray device 91 for spraying the water-repellent film liquid is disposed on the ceiling of the film forming chamber 9, and the water-repellent film liquid sprayed by the spray device 91 is The film forming chamber 9 is filled. Further, a roller conveyor 93 extending from one side surface of the film forming chamber 9 to the other side surface is provided, and the window glass G is conveyed by the roller conveyor 93. Further, a container 94 for storing the sprayed water repellent film liquid is disposed below the roller conveyor 93.

  In order to form a film, first, the roller conveyor 93 passes through the film forming chamber 9 over a predetermined time with the outer surface of the window glass G facing upward. Thus, the water repellent film liquid S is applied to the outer surface of the window glass G. At this time, the water-repellent film solution S applied to the outer surface of the vehicle wraps around the inner surface of the vehicle, that is, the surface facing downward, and is formed on the periphery of this surface. Accordingly, a water repellent film is formed on the first region 101 on the inner surface of the vehicle and other peripheral portions.

  In order to make the water repellent film solution wrap around the inner surface of the vehicle and form a water repellent film on at least a part of the first region, the amount of the water repellent film solution sprayed from the spray device 91, the film forming chamber 9 The time for passing the water is adjusted as appropriate. Thus, a water repellent film is formed on the outer surface of the vehicle, and a window glass having a functional film formed on the second region 102 on the inner surface of the vehicle and a water repellent film on at least a part of the first region 101 is formed. Complete.

  The reason why the water-repellent film liquid S flows from the vehicle outer surface to the vehicle inner surface is as follows. First, since the film forming chamber 9 is generally small (for example, a room having a side of 3 m or less), the sprayed water-repellent film liquid S is sufficiently filled in the film forming chamber 9, and the window The inner surface (lower surface) of the glass G is always supported by the roller conveyor 93, and the sprayed water-repellent film liquid S adheres to the inner surface of the window glass G through the roller conveyor 93. Further, since the sprayed water-repellent film liquid S is stored in a container 94 disposed below the roller conveyor 9, the water-repellent film liquid adheres to the inner surface of the vehicle by vaporizing the liquid.

<7 Features>
As described above, according to the present embodiment, since the water-repellent film is formed on at least the first region 101 inside the vehicle and the surface outside the vehicle, the water-repellent performance of the window glass can be improved. In particular, since the water repellent film repels water and the like, the contact angle of droplets on the window glass increases. Thereby, antifouling property can be improved. For this reason, when a water-repellent film is formed near the upper side of the window glass, the antifouling property is improved. Furthermore, since it becomes easy to slip when the vicinity of the upper side comes into contact with the contact portions 721 and 731 of the glass run, it is difficult for the glass run 7 to be rubbed against the window glass and to prevent scratching. In addition, no functional film is formed in the first region 101 on the inner surface of the vehicle, and the width d of the first region 101 is larger than the width D2 of the portion that contacts the contact portions 721 and 731. Therefore, the functional film can be prevented from coming into contact with the contact portions 721 and 731 and being damaged.

<8 Modification>
As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various change is possible unless it deviates from the meaning.

  In the above embodiment, the water repellent film liquid is mainly formed around the first region 101 inside the window glass, but the water repellent film liquid is formed on the entire surface inside the car. You can also. In this case, the amount of the water-repellent film solution sprayed from the spray device 91, the time for passing through the film forming chamber 9 and the like are adjusted, and for example, at least one of them may be made longer than usual.

  In the above embodiment, in the flow coating method for forming the functional film liquid, the functional film liquid is applied while moving the nozzle 611. However, the nozzle 611 is fixed and the window glass is moved. It is also possible to apply the functional film solution. That is, it is only necessary to apply the functional film solution along the above-described path while moving the nozzle 611 relative to the window glass.

  For example, in the said embodiment, although the window glass attached to the door by the side of the front seat of a motor vehicle was demonstrated, the window glass attached to the door by the side of a rear seat may be sufficient.

  Examples of the present invention will be described below. However, the present invention is not limited to the following examples.

  Here, the dynamic friction coefficient when a water-repellent film was formed on the window glass was measured, and the slidability in the water-repellent film was examined. Specifically, a sliding member made of the same material as a general glass run was slid on the window glass, and the dynamic friction coefficient was measured.

1. Window glass A window glass made of a flat clear glass plate was prepared. Then, as an example, a water repellent film solution was sprayed on the window glass from the outer surface of the vehicle by the method shown in FIG. As a comparative example, a window glass having no water-repellent film was prepared. As the water repellent film solution, the coating solution described in Example 1 of the above-mentioned Japanese Patent No. 3984426 was used.

2. Test method
(1) Examples and Comparative Examples were placed on a flat surface.
(2) A general glass run was cut and formed into a flat 40 × 10 mm size as a sliding member. And the jig | tool was fixed to the upper surface of this sliding member, the weight was arrange | positioned on the upper surface of the jig | tool, and the lower surface of the sliding member was arrange | positioned on the window glass which concerns on an Example and a comparative example. At this time, the total load F1 of the sliding member, the jig and the weight was 7.252N.
(3) As shown in FIG. 8, a cable having one end connected to the load cell was connected to a jig, and the cable was pulled in the horizontal direction at a speed of 500 mm / min. Then, the maximum load F2 and the average load F3 in the range from the point where the sliding member moves 20 mm to the point where it moves 120 mm are measured by the load cell, and the dynamic friction coefficient μ1 at the maximum load F2 and the dynamic friction coefficient at the average load F3. μ2 was calculated. This operation was repeated three times. Note that μ1 = F2 / F1 and μ2 = F3 / F1.
(4) In the examples, the above measurement was performed on the region near the periphery where the water-repellent film was formed around the inside of the vehicle and the surface on the outside of the vehicle. About the comparative example, the said measurement was performed about the surface in which the liquid for water-repellent films was not formed into a film.

3. The results are as follows. Table 1 shows the result of calculating the dynamic friction coefficient μ1 based on the maximum load, and Table 2 shows the result of calculating the dynamic friction coefficient μ2 based on the average load.

  As described above, the dynamic friction coefficients μ1 and μ2 due to the maximum load and the average load are smaller than those of the comparative example on the inner surface of the example, and are not significantly different from the outer surface of the example. Therefore, even when the water repellent film solution is drawn from the outside surface of the vehicle, the dynamic friction coefficient can be reduced and the friction with the contact portion with the glass run can be reduced without much difference from the usual application method. can do. As a result, it was found that both the window glass and the glass run can be prevented from being damaged. In addition, it was also confirmed that the contact angle was increased when water was dropped on a region where the water-repellent film on the inner surface of the vehicle was formed. Therefore, it turned out that antifouling property is also improving.

3: Upper side 101: 1st area | region 102: 2nd area | region G: Window glass

Claims (6)

It is a window glass that can be opened and closed at the door of an automobile and whose upper side is in contact with the contact portion of the upper frame of the door,
A first region having a predetermined width from the upper side, and a second region adjacent to a lower edge of the first region, wherein the predetermined width is larger than a width in contact with the contact portion;
A water-repellent film is formed on one side,
On the other surface, a part of the water-repellent film is formed to wrap around from at least one part of the first region to the other surface from the one surface,
A window glass in which a functional film is formed in a second region on the other surface of the window glass. The upper frame of the door is provided with a storage portion in which the upper side is stored and the contact portion is built-in,
The window glass according to claim 1, wherein the predetermined width is smaller than a width housed in the housing portion.   The window glass according to claim 1, wherein the water repellent film is formed by a spray coating method.   The window glass according to any one of claims 1 to 3, wherein the functional film is formed by applying a functional film solution by a flow coating method.   The window glass according to any one of claims 1 to 4, wherein the other surface is curved in a concave shape, and is disposed inside the vehicle. A method of manufacturing a window glass that can be opened and closed in a door of an automobile and whose upper side contacts a contact portion of an upper frame of the door,
A step of preparing a window glass having a first region having a predetermined width from the upper side and a second region adjacent to the lower edge of the first region, wherein the predetermined width is larger than a width contacting the contact portion. When,
Depositing a functional film on the second region of the other surface of the window glass;
Forming a water-repellent film on one surface of the window glass and forming a part of the water-repellent film around at least the first region on the other surface of the window glass plate; and
A method for manufacturing a window glass.