WO2023100744A1 - Procédé de fabrication d'un substrat en verre, procédé de fabrication d'un socle, substrat en verre et socle - Google Patents

Procédé de fabrication d'un substrat en verre, procédé de fabrication d'un socle, substrat en verre et socle Download PDF

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Publication number
WO2023100744A1
WO2023100744A1 PCT/JP2022/043422 JP2022043422W WO2023100744A1 WO 2023100744 A1 WO2023100744 A1 WO 2023100744A1 JP 2022043422 W JP2022043422 W JP 2022043422W WO 2023100744 A1 WO2023100744 A1 WO 2023100744A1
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WIPO (PCT)
Prior art keywords
glass plate
pedestal
manufacturing
shape
glass substrate
Prior art date
Application number
PCT/JP2022/043422
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English (en)
Japanese (ja)
Inventor
亮一 飯田
丈彰 小野
勲 齋藤
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Ａｇｃ株式会社
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Filing date
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Publication of WO2023100744A1 publication Critical patent/WO2023100744A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B23K26/38—Removing material by boring or cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/70—Auxiliary operations or equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
    • B24B9/08—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
    • B24B9/10—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of plate glass
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B33/00—Severing cooled glass
    • C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
    • C03B33/023—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor the sheet or ribbon being in a horizontal position
    • C03B33/037—Controlling or regulating
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B33/00—Severing cooled glass
    • C03B33/09—Severing cooled glass by thermal shock

Definitions

  • the present invention relates to a method for manufacturing a glass substrate, a method for manufacturing a pedestal, a glass substrate, and a pedestal.
  • Patent Document 1 discloses a technique for correcting a deviation that occurs between a curved plate and a table when the curved plate is placed on the table surface.
  • the present invention has been made in view of the above problems, and manufactures a glass substrate that can reduce the internal stress generated in the glass plate when the glass plate is fixed to the surface of the pedestal and can suppress the development of microcracks.
  • the purpose is to provide a method.
  • Another object of the present invention is to provide a method for manufacturing a pedestal used for manufacturing a glass substrate, and the pedestal. Another object of the present invention is to provide a glass substrate in which propagation of microcracks is suppressed.
  • At least a portion of a glass plate having a main surface having a curved surface with a plurality of radii of curvature is fixed to the surface of a pedestal, and the glass plate has a predetermined curvature.
  • the surface of the pedestal has substantially the same shape as at least part of the curved shape of the main surface itself of the glass plate.
  • a glass plate having a main surface having a curved surface with a plurality of radii of curvature is fixed in close contact with the surface of a base, and the glass plate is fixed by the fixation.
  • the generated internal stress is 10 MPa or less, and a method for manufacturing a glass substrate is provided in which the glass plate is fixed to the surface of the pedestal and subjected to a predetermined processing.
  • a method for manufacturing a pedestal for fixing a glass plate wherein the glass plate has a principal surface having a curved surface having a plurality of radii of curvature, and the pedestal
  • a method for manufacturing a pedestal is provided in which at least part of the surface is modeled in substantially the same shape as at least part of the curved shape of the main surface itself of the glass plate.
  • a method of manufacturing a pedestal for fixing a glass plate wherein the glass plate has a principal surface having a curved surface having a plurality of radii of curvature, and the principal surface is measured with a 3D scanner, and based on the acquired shape data, at least a portion of the surface of the pedestal is formed.
  • a method for manufacturing a pedestal for fixing a glass plate wherein the glass plate has a principal surface having a curved surface having a plurality of radii of curvature, and the pedestal has , a method for manufacturing a pedestal, including a thermoplastic resin, and hardening the thermoplastic resin by pressing at least a portion of the main surface against a surface of the thermoplastic resin in a softened state.
  • the main surface is provided with a curved surface having a plurality of radii of curvature, and at least one end surface that connects the opposing main surfaces includes an edge surface and the edge surface.
  • a glass substrate is provided having a chamfered surface located between each major surface, the chamfered surface having a concave surface.
  • a pedestal for fixing a glass plate wherein the glass plate has a main surface having a curved surface having a plurality of radii of curvature, and at least a surface of the pedestal A pedestal is provided, a portion of which has the curved shape of the main surface itself.
  • a pedestal for fixing a glass plate wherein at least part of the surface of the pedestal is two or more tangential axes that intersect at an arbitrary point on the surface.
  • a pedestal is provided having a non-flattable shape with a radius of curvature about an axis.
  • a method for manufacturing a glass substrate that can reduce the internal stress generated in the glass plate when the glass plate is fixed to the surface of the pedestal and suppress the development of microcracks, and a method for producing microcracks.
  • a glass substrate with reduced growth is provided.
  • ADVANTAGE OF THE INVENTION According to one aspect of the present invention, a method for manufacturing a pedestal provided with a surface modeled on the principal surface of a glass plate, and the pedestal are provided simply and with high accuracy.
  • FIG. 1A is a schematic diagram for explaining a problem of a conventional glass substrate manufacturing method.
  • FIG. 1B is a schematic diagram for explaining a problem of the conventional glass substrate manufacturing method.
  • FIG. 1C is a schematic diagram for explaining a problem of the conventional glass substrate manufacturing method.
  • FIG. 2A is a schematic diagram for explaining a method for manufacturing a glass substrate according to one embodiment of the present invention.
  • FIG. 2B is a schematic diagram for explaining a method for manufacturing a glass substrate according to one embodiment of the present invention.
  • FIG. 2C is a schematic diagram for explaining a method for manufacturing a glass substrate according to one embodiment of the present invention.
  • FIG. 3A is a schematic diagram showing an example of a shape processing process for the glass plate fixed to the surface of the pedestal.
  • FIG. 3A is a schematic diagram showing an example of a shape processing process for the glass plate fixed to the surface of the pedestal.
  • FIG. 3B is a schematic diagram showing an example of a shape processing process for the glass plate fixed to the surface of the pedestal.
  • FIG. 3C is a schematic diagram showing an example of a shape processing process for the glass plate fixed to the surface of the pedestal.
  • FIG. 4A is a schematic diagram showing a cuttable internal stress confirmation test when compressive stress is applied to the surface of a glass plate for cutting with a cutter.
  • FIG. 4B is a schematic diagram showing a cuttable internal stress confirmation test when a tensile stress is applied to the surface of a glass plate for cutting with a cutter.
  • FIG. 5A is a schematic diagram showing a cuttable internal stress confirmation test when applying compressive stress to the surface of a glass plate for laser cutting.
  • FIG. 5B is a schematic diagram showing a cuttable internal stress confirmation test when a tensile stress is applied to the surface of the glass plate for laser cutting.
  • FIG. 6A is a cross-sectional view for explaining a method of manufacturing a pedestal according to one embodiment of the present invention.
  • FIG. 6B is a cross-sectional view for explaining a method of manufacturing a pedestal according to one embodiment of the present invention.
  • FIG. 7A is a cross-sectional view for explaining a method of manufacturing a pedestal according to an embodiment different from FIGS. 6A and 6B.
  • FIG. 7B is a cross-sectional view for explaining a method of manufacturing a pedestal according to an embodiment different from FIGS. 6A and 6B.
  • FIG. 7C is a cross-sectional view for explaining a method of manufacturing a pedestal according to an embodiment different from FIGS. 6A and 6B.
  • FIG. 8 is a perspective view of the glass substrate of one embodiment of the present invention.
  • FIG. 9A is a plan view of a glass substrate according to one embodiment of the invention.
  • FIG. 9B is a front view of the glass substrate of one embodiment of the invention.
  • FIG. 9C is a side view of the glass substrate of one embodiment of the invention.
  • FIG. 10 is a partially enlarged sectional view enlarging the end surface of the glass substrate in one embodiment of the present invention.
  • FIG. 11A is a partially enlarged sectional view enlarging an end surface of a conventional glass substrate.
  • FIG. 11B is a perspective view for explaining a conventional shaping process of the end surface of the glass substrate.
  • FIG. 12A is a perspective view of a pedestal manufactured by the method shown in FIGS. 6A and 6B.
  • FIG. 12B is a graph showing the height difference between the surface of the pedestal of Example 1 as an embodiment shown in FIG. 12A and the pedestal of Example 2 as a conventional example.
  • a shape processing process applied to a glass plate having a curved main surface and additional processing such as printing and coating are performed while the glass plate is fixed to a base.
  • additional processing such as printing and coating
  • the shape processing process since a processing load is applied to the glass plate, a pedestal that can adhere and fix the main surface of the glass plate in order to prevent chattering and displacement is required.
  • the pedestal has been produced in accordance with the designed shape of the glass substrate. Problems of the conventional glass substrate manufacturing method will be described with reference to FIGS. 1A to 1C.
  • FIG. 1A is a cross-sectional view schematically showing a glass plate 1 in which principal surfaces 1a and 1b are curved surfaces having a plurality of radii of curvature.
  • the "principal surface” refers to the surface having the largest area.
  • the main surfaces correspond to the front and back surfaces of the glass plate 1 facing each other. Both the front and back surfaces of the glass plate 1 have the same curved surface shape or a similar shape. The same applies to FIG. 2 and subsequent figures.
  • FIG. 1A is a cross-sectional view schematically showing a glass plate 1 in which principal surfaces 1a and 1b are curved surfaces having a plurality of radii of curvature.
  • the "principal surface” refers to the surface having the largest area.
  • the main surfaces correspond to the front and back surfaces of the glass plate 1 facing each other. Both the front and back surfaces of the glass plate 1 have the same curved surface shape or a similar shape. The same applies to FIG. 2 and subsequent figures.
  • FIG. 1A is
  • FIG. 1B is a cross-sectional view schematically showing a pedestal 2 in which a surface 2a is formed with a curved surface having a plurality of radii of curvature based on the shape design values of the main surfaces 1a and 1b of the glass plate 1.
  • FIG. 1C the shape processing process and the additional processing process described above are performed while the glass plate 1 shown in FIG. 1A is fixed to the surface 2a of the pedestal 2 shown in FIG. 1B.
  • the inventors of the present invention have invented a method for manufacturing a glass substrate that can reduce the internal stress generated when the glass plate is fixed to the surface of the pedestal and that can suppress the development of microcracks. rice field.
  • FIG. 2A is a cross-sectional view schematically showing a glass plate 4 in which principal surfaces 4a and 4b are curved surfaces having a plurality of radii of curvature.
  • the shape of each main surface 4a, 4b is, for example, a rectangular shape in plan view.
  • the shape of the main surfaces 4a and 4b may be trapezoidal, circular, or elliptical in plan view, and is not particularly limited.
  • FIG. 2B is a cross-sectional view schematically showing the pedestal 5 formed by the manufacturing method of this embodiment. At least part of the surface 5a of the base 5 is formed in the curved surface shape of the main surface 4b itself of the glass plate 4 shown in FIG. 2A.
  • the main surface 4b is a surface that contacts the surface 5a of the base 5. As shown in FIG. It is preferable that the entire surface 5a of the pedestal 5 is formed in the curved surface shape of the main surface 4b of the glass plate 4 itself. A specific example of the method for manufacturing the pedestal 5 will be described later.
  • FIG. 2C at least part of the glass plate 4 shown in FIG. 2A is fixed in close contact with the surface 5a of the pedestal 5 shown in FIG. 2B. It is preferable to fix the entire glass plate 4 to the surface 5 a of the base 5 . Although the fixing method is not limited, it is preferable to adsorb and fix the glass plate 4 to the pedestal 5 by negative pressure.
  • the main surface 4b of the glass plate 4 can be brought into contact with the surface 5a of the base 5 in the stage prior to fixing the glass plate 4 to the surface 5a of the base 5. There can be no gap in between, or the gap can be very small.
  • the "curved shape of the main surface 4b itself of the glass plate 4" and the "substantially the same shape as the main surface” mean that the shape error between the main surface 4a of the glass plate 4 and the surface 5a of the pedestal 5 is It refers to a curved shape that is 1.0 mm or less. Therefore, the gap between the glass plate 4 and the pedestal 5 can be made 1.0 mm or less, and the internal stress generated in the glass plate 4 when the glass plate 4 is fixed to the pedestal 5 can be reduced.
  • the shape error is preferably 0.5 mm or less, more preferably 0.3 mm or less.
  • the "shape error" is the maximum gap between the surface 5a of the pedestal 5 and the main surface 4b of the glass plate 4 facing the pedestal 5 when the glass plate 4 is arranged on the surface 5a of the pedestal 5. Point to value.
  • an elastic sheet may be attached to the surface 5a of the base 5.
  • the elastic sheet can absorb part of the external force when the glass plate 4 is fixed to the surface 5a of the base 5, and the internal stress generated in the glass plate 4 can be reduced more effectively.
  • the absorption thickness of the elastic sheet is preferably about 0.2 mm.
  • the glass plate 4 is processed in a predetermined manner.
  • predetermined processing is not limited, for example, cutting the edge of the glass plate 4 described in FIG. do.
  • shape processing such as forming a through hole in the glass plate 4 can be proposed.
  • additional processing such as printing and coating can be applied.
  • the glass plate 4 is fixed to the surface 5a of the pedestal 5, the internal stress generated in the glass plate 4 can be reduced. can be suppressed.
  • the material of the glass plate 4 is not limited in this embodiment. That is, alkali-free glass and alkali glass can be used without distinction.
  • the glass plate 4 is, for example, soda-lime glass, alkali-free glass, alkali glass, or the like.
  • the alkali glass may be glass for chemical strengthening. Glass for chemical strengthening is used, for example, as a cover glass after being chemically strengthened.
  • the glass plate 4 may be air-cooled tempered glass. In this embodiment, even if the glass plate 4 is alkali glass, it can be appropriately processed into a predetermined shape while suppressing the development of microcracks.
  • the thickness of the glass plate 4 is not particularly limited, it is usually preferably 5 mm or less, more preferably 3 mm or less, in order to effectively perform the chemical strengthening treatment. Further, when the glass plate 4 is used as a cover glass for an in-vehicle display device such as a car navigation system, the thickness of the glass plate 4 is preferably 0.2 mm or more, more preferably 0.8 mm or more, more preferably 1 mm or more, from the viewpoint of strength. The above is more preferable.
  • the dimensions of the glass plate 4 can be appropriately selected according to the application.
  • the length of the short side is, for example, 50 mm or more and 500 mm or less, which is preferable. is 100 mm or more and 300 mm or less
  • the length of the long side is, for example, 50 mm or more and 1500 mm or less, preferably 100 mm or more and 1200 mm or less.
  • even a glass plate having a relatively large size as described above can be processed appropriately.
  • 3A to 3C are schematic diagrams showing an example of a shape processing process for the glass plate 4 fixed to the surface 5a of the pedestal 5.
  • FIG. 3A to 3C are schematic diagrams showing an example of a shape processing process for the glass plate 4 fixed to the surface 5a of the pedestal 5.
  • the pedestal 5 is provided with grooves 7 extending in the thickness direction from the surface 5a at positions inside the end surfaces 5b, 5b.
  • This groove 7 is formed with a length that crosses the edge of the glass plate 4 .
  • both ends of the glass plate 4 are cut by, for example, a laser beam L along the grooves 7 provided in the base 5 .
  • the end surface 4c of the cut glass plate 4 is chamfered using a ball grindstone 8, for example.
  • FIG. 3C is a perspective view of the vicinity of the edge of the glass plate 4 showing chamfering by the ball grindstone 8.
  • FIG. 3C for example, the corner of the upper side between the main surface 4a on the upper surface side and the end surface 4c is chamfered with a ball grindstone 8, and then the main surface 4b on the lower surface side and the end surface 4c are chamfered. The corners of the lower side between are chamfered with a ball grindstone 8.
  • the main surfaces 4a and 4b are shown as planes in FIG. 3C, they are actually curved surfaces.
  • the method for manufacturing a glass substrate according to the present embodiment is a glass having principal surfaces 4a and 4b which have curvature radii around two or more tangential axes intersecting at an arbitrary point on the principal surface 4a and which cannot be developed on a plane. It can be preferably applied to the plate 4.
  • a specific example of a complicated shape that cannot be developed on a plane will be described in detail in the section [Description of a glass substrate according to an embodiment of the present invention] below.
  • the main surfaces 4a and 4b have a complicated shape, if a gap occurs between the glass plate 4 and the base 5, it is difficult to fill the gap even if an external force is applied. It is easy to cause a gap between 5 and the like.
  • shape processing such as cutting or drilling is performed in a state in which such a deviation has occurred, shape processing cannot be performed with high accuracy. Further, when the glass plate 4 is brought into close contact with the surface 5a of the base 5 by increasing the external force, the internal stress generated in the glass plate 4 becomes stronger, causing defects such as the development of microcracks. Therefore, when the main surface 4a of the glass plate 4 has a complicated shape, the glass plate 4 is fixed in close contact with the surface 5a of the pedestal 5, and the internal stress generated by the fixation is reduced. It becomes possible to apply highly accurate shape processing to.
  • FIG. 4A is a schematic diagram showing a cuttable internal stress confirmation test when compressive stress is applied to the surface of the glass plate 13 for cutting with a cutter.
  • FIG. 4B is a schematic diagram showing a cuttable internal stress confirmation test when tensile stress is applied to the surface of the glass plate 13 for cutting with a cutter.
  • Both ends of the lower surface of the flat glass plate 13 were supported by fixing members 9, and a strain gauge 10 was installed in the center of the lower surface of the glass plate 13. Then, as shown in FIG. 4A, on the upper surface side of the glass plate 13, a weight 11 was installed at a position inside the fixing member 9 to apply an external force downward to the glass plate 13. As shown in FIG. Thereby, a compressive stress can be applied to the upper surface of the glass plate 13 on the cutting side. Then, the cutter 12 cut the glass plate 13 along the center of the upper surface of the glass plate 13 while changing the magnitude of the external force. The internal stress generated in the glass plate 13 can be obtained based on the output of the strain gauge 10. FIG. However, the installation of the strain gauge 10 is not essential, and it is possible to obtain the internal stress from the force applied to the glass plate 13 and the cross-sectional area.
  • the center of the lower surface of the flat glass plate 13 is supported by a pin-shaped fixing member 9, and as shown in FIG. rice field. Thereby, a compressive stress can be applied to the upper surface of the glass plate 13 on the cutting side. Then, the cutter 12 cut the glass plate 13 along the center of the upper surface of the glass plate 13 while changing the magnitude of the external force.
  • FIG. 5A is a schematic diagram showing a cuttable internal stress confirmation test when applying a compressive stress to the surface of the glass plate 15 for laser cutting.
  • FIG. 5B is a schematic diagram showing a cuttable internal stress confirmation test when applying tensile stress to the surface of the glass plate 15 for laser cutting.
  • the top view of FIG. 5A is a plan view
  • the bottom view of FIG. 5A is a cross-sectional view.
  • a jig 24 having a concavely curved surface 24 a was prepared, and a flat glass plate 15 was placed on the surface 24 a of the jig 24 .
  • An external force was applied to the glass plate 15 by a weight (not shown) to follow the surface 24a of the jig 24 as shown in FIG. 5A.
  • a compressive stress was applied to the upper surface of the glass plate 15 on the cutting side.
  • the glass plate 15 was cut by the laser beam 16 so as to vertically cut through the center of the upper surface thereof.
  • the top view of FIG. 5B is a plan view, and the bottom view is a cross-sectional view.
  • a jig 17 having a convex curved surface 17 a was prepared, and a flat glass plate 18 was placed on the surface 17 a of the jig 17 .
  • An external force was applied to the glass plate 18 by a weight (not shown) to follow the surface 17a of the jig 17 as shown in FIG. 5B.
  • a tensile stress was applied to the upper surface of the glass plate 18 on the cutting side.
  • the glass plate 18 was cut by the laser beam 16 so as to vertically cut through the center of the upper surface thereof.
  • Table 1 below summarizes the upper limit values of the internal stress that can be processed, which are obtained from the above experiments.
  • the values of the internal stress shown in Table 1 are the limit values at which defects such as microcrack progress and chipping are not observed on the cut surface of the glass substrate subjected to the predetermined shape processing.
  • the upper limit of workability was 2 MPa when cutting with a cutter while compressive stress was applied to the surface of the cut side of the glass plate. Further, when the glass plate was cut with a cutter while tensile stress was acting on the surface of the glass plate, the upper limit of workability was 3 MPa. In addition, when laser cutting was performed with compressive stress acting on the surface of the glass plate, the upper limit of workability was 18 MPa. Further, when laser cutting was performed in a state in which tensile stress was applied to the surface of the glass plate, the upper limit of workability was 10 MPa.
  • Internal stress can be measured using, for example, a digital image correlation method.
  • the glass plate 4 it is preferable to fix the glass plate 4 so that the internal stress generated in it is 2 MPa or less.
  • cutter cutting can be selected as the "predetermined processing". That is, by adjusting the internal stress to 2 MPa or less, cutting can be performed regardless of laser cutting or cutter cutting. By adjusting the internal stress to 2 MPa or less in this way, it is possible to suppress the development of microcracks and the occurrence of defects such as chipping that occur during shape processing regardless of the type of cutting.
  • the pedestal 5 used in the method for manufacturing a glass substrate of the present embodiment is preferably a pedestal 5 manufactured by the method described below, but is not limited to a pedestal manufactured by the following manufacturing method. .
  • the method of manufacturing the pedestal 5 is not limited as long as the pedestal 5 can keep the internal stress generated in the glass plate 4 within the above numerical range when the glass plate 4 is fixed to the pedestal 5 .
  • the glass plate has a main surface having a curved surface with a plurality of radii of curvature, and at least part of the surface of the base has the curved shape of the main surface itself. More preferably, the entire surface of the pedestal is modeled after the curved shape of the main surface itself.
  • the following method can be given as an example of the method of modeling the surface of the base in the shape of the main surface of the glass plate.
  • FIG. 6A and 6B are cross-sectional views for explaining the method of manufacturing the pedestal 5 according to this embodiment.
  • a glass plate 4 is formed in which the main surfaces 4a, 4b are curved with multiple radii of curvature.
  • FIG. 6A is a cross-sectional view schematically showing the glass plate 4.
  • An existing product can be used for the 3D scanner 19 .
  • FIG. 6B based on the shape data acquired from the 3D scanner 19, at least part of the surface 5a of the base 5 is formed into a curved shape having, for example, multiple radii of curvature. It is preferable to form the entire surface 5a of the pedestal 5 in the curved shape based on the shape data.
  • FIG. 6B is a cross-sectional view schematically showing the pedestal 5. As shown in FIG. By forming the pedestal 5 using a 3D printer, it is possible to manufacture the pedestal 5 that accurately reproduces the curved surface shape of the main surface 4a of the glass plate 4 .
  • the material of the pedestal 5 manufactured by the method described using FIGS. 6A and 6B is not limited, for example, thermoplastic resin can be presented.
  • thermoplastic resin 14 having a predetermined thickness is prepared.
  • the surface 14a of the thermoplastic resin 14 is planar.
  • the thermoplastic resin 14 is softened by heating.
  • thermoplastic resin for example, "Hapra Freele” manufactured by Polysys Co., Ltd. can be used.
  • a glass plate 4 having curved main surfaces 4a and 4b with a plurality of radii of curvature is pressed against a surface 14a of a softened thermoplastic resin 14 heated to a softening point or higher. Then, while the glass plate 4 is being pressed against it, it is cooled to the curing temperature to cure the thermoplastic resin 14 . Thereafter, as shown in FIG. 7C, the glass plate 4 is removed from the surface 14a of the hardened thermoplastic resin 14. Then, as shown in FIG. Thereby, the pedestal 5 whose surface 5a has the same curved surface shape as the main surface 4b of the glass plate 4 can be precisely formed.
  • the surface 5a of the pedestal 5 is formed using the curved shape of the main surface itself of the molded glass plate 4. . Therefore, the curved shape of the main surface 4a of the glass plate 4 can be transferred to the surface 5a of the base 5 with high accuracy.
  • the pedestal 5 manufactured by the method described using FIGS. 6A, 6B, and 7A to 7C has a surface 5a having a curved shape of the main surfaces 4a and 4b of the molded glass plate 4 itself. are doing. Therefore, as shown in FIG. 2C, when the glass plate 4 is placed on the surface 5a of the pedestal 5, no gap is generated between the main surface 4b of the glass plate 4 and the surface 5a of the pedestal 5, or the gap is formed. can be made very small. Therefore, when the glass plate 4 is fixed to the pedestal 5, the internal stress generated in the glass plate 4 can be suppressed to 10 MPa or less, preferably 2 MPa or less.
  • the main surface 4a of the glass plate 4 is formed into a complex shape having a radius of curvature around two or more tangential axes that intersect at an arbitrary point on the main surface. It can be preferably applied.
  • the internal stress generated in the glass plate 4 can be suppressed to 10 MPa or less when the glass plate 4 is fixed to the pedestal 5. preferably, it can be suppressed to 2 MPa or less.
  • the main surface 4b of the glass plate 4 can be brought into contact with the surface 5a of the pedestal 5 without any gap.
  • FIG. 8 is a perspective view of the glass substrate 20 of this embodiment.
  • 9A is a plan view of the glass substrate 20 shown in FIG. 8
  • FIG. 9B is a front view of the glass substrate 20
  • FIG. 9C is a side view of the glass substrate 20.
  • FIG. FIG. 10 is a partially enlarged cross-sectional view showing the vicinity of the end surface of the glass substrate 20. As shown in FIG.
  • the glass substrate 20 of this embodiment has a first main surface 20a on the upper surface side and a second main surface 20b on the lower surface side. 20b face each other in the thickness direction.
  • the opposing main surfaces 20a and 20b are connected by an end surface 20c.
  • the two directions orthogonal to each other in the plane direction are the X direction and the Y direction
  • the height direction orthogonal to the X direction and the Y direction is the Z direction.
  • the glass substrate 20 preferably has an elongated shape extending longer in the X direction than in the Y direction, as shown in FIGS. 8 and 9A.
  • the glass substrate 20 is curved in the Z direction in the long direction extending in the X direction and curved in the Z direction in the short direction extending in the Y direction. preferably.
  • the first major surface 20a is a first plane parallel to the X direction perpendicular to the center point A as an arbitrary point on the first major surface 20a, for example.
  • a second tangent line C parallel to the Y-direction, and have a shape that cannot be developed on a plane having radii of curvature around each axis.
  • the first radius of curvature around the axis of the first tangent line B is the radius of curvature of a curved surface that extends in the Y direction and curves in the Z direction in the short direction
  • the second radius of curvature around the axis of the second tangent line C The radius is the radius of curvature of a curved surface that extends in the X direction and curves in the Z direction.
  • the first radius of curvature is preferably smaller than the second radius of curvature.
  • the first curvature radius is 5 mm or more and 3000 mm or less
  • the second curvature radius is 600 mm or more and 14000 mm or less.
  • the principal surfaces 20a and 20b have bent portions 21 bent with a radius of curvature smaller than the second radius of curvature on both sides in the longitudinal direction.
  • the bent portions 21 on both sides are bent to the same side, but they may be bent in different directions.
  • the glass substrate 20 of this embodiment has a principal surface having a curved surface with multiple radii of curvature. At least one end surface 20c connecting the opposing main surfaces has an edge surface 22 and a chamfered surface 23 positioned between the edge surface 22 and the main surfaces 20a and 20b. has a concave surface.
  • the edge surface 22 is orthogonal to the main surfaces 20 a and 20 b or the surface of the bent portion 21 .
  • the edge surface 22 is, for example, a cut surface cut by the laser beam L shown in FIG. 3A, and the chamfered surface 23 of the present embodiment is, for example, a surface chamfered by the ball grindstone 8 shown in FIG. 3C. .
  • the maximum height Sz of the surface roughness of the edge surface 22 and the chamfered surface 23 is not limited, but can be, for example, 10 ⁇ m or less.
  • the maximum height Sz of surface roughness is a value measured according to JIS B 0601:2001.
  • a laser microscope manufactured by Olympus Corporation: LEXT OLS5000, for example, can be used to measure the maximum height Sz of surface roughness.
  • the maximum height Sz of the chamfered surface 23 can be made smaller than the maximum height Sz of the edge surface 22 .
  • the maximum height Sz can be 10 ⁇ m or less, preferably 8 ⁇ m or less, more preferably 7 ⁇ m or less.
  • the maximum height Sz of the edge surface 22 can be set to approximately 6 to 8 ⁇ m.
  • the maximum height Sz of the chamfered surface 23, which is the polishing surface of the ball grindstone 8 can be 5 ⁇ m or less.
  • FIG. 11A is a partially enlarged cross-sectional view of an edge face 30 of a conventional glass substrate, and FIG.
  • the end surface 30 has an edge surface 30a and a chamfered surface 30b, and the chamfered surface 30b is a linearly inclined surface.
  • the chamfered surface 30b is a so-called C-plane.
  • the end surface 30 can be formed using a grindstone 31 that can be processed into the shape of the edge surface 30a and the chamfered surface 30b.
  • both the chamfered surface 30b and the edge surface 30a of the end surface 30 are surfaces finished by the grindstone 31.
  • the maximum height Sz from the edge surface 30a to the chamfered surface 30b is substantially the same.
  • the end surface 20c of the glass substrate 20 of the present embodiment has better visibility of the end surface, the processing load during chamfering can be reduced, and the processing work can be shortened. can. Furthermore, the variation width of the chamfer width T1 can be reduced.
  • the chamfered surface 23 concave, the visibility of the end surface 20c can be improved compared to the C surface (chamfered surface 30b) shown in FIG. 11A.
  • the ball grindstone 8 chamfers only the corners between the main surfaces 20a, 20b and the end surface 20c. Therefore, the edge surface 22 is left as a cut surface, and the processing load can be reduced compared to the conventional example in which the entire end surface is processed with a grindstone, and the working time can be shortened.
  • the variation width of the chamfer width T1 can be reduced, and the variation width of the chamfer width T1 on at least one end face can be suppressed to 20 ⁇ m or less.
  • the chamfered width T1 of the chamfered surface 23 on all the end faces has a variation width of 20 ⁇ m or less.
  • the glass substrate 20 in this embodiment can be formed through the steps described with reference to FIGS. 2A to 2C and FIGS. 3A to 3C.
  • the glass plate 4 can be fixed in close contact with the surface of the pedestal 5 during shape processing.
  • the internal stress generated in the glass plate 4 can be suppressed to 10 MPa or less.
  • the laser cutting shown in FIG. 3A and the chamfering by the ball grindstone 8 shown in FIGS. 3B and 3C can be performed with high accuracy, and the end surface shape shown in FIG. 10 can be formed with high accuracy and small variations.
  • the end face 20c located at the end of the glass substrate 20 in the X direction was used for explanation, but the end faces 20d located on both sides in the Y direction are also chamfered concavely with the edge face 22 shown in FIG. 23. All the end faces 20c and 20d may be formed with the end face shape shown in FIG. 10, or at least one end face may be formed with the end face shape shown in FIG.
  • the curved surface shape of the main surfaces 20a and 20b of the glass substrate 20 of the present embodiment is not limited to the shape shown in FIG. A glass substrate made of a curved glass plate 4 may be used.
  • the first main surface 20a is aligned with the first tangent line B parallel to the X direction perpendicular to the central point A on the first main surface 20a.
  • the second tangent line C parallel to the Y direction, and have a shape that cannot be developed on a plane with a radius of curvature around each axis.
  • the glass plate 4 having the main surfaces 4a and 4b having a complicated shape that cannot be developed on a plane is closely attached and fixed to the pedestal 5 and subjected to shape processing, as shown in FIG. 2C.
  • the internal stress generated by the fixation can be reduced, and it is possible to perform highly accurate shape processing on complex shapes.
  • the glass substrate 20 in which the development of microcracks and defects such as chipping are suppressed in the end faces 20c, 20d, etc., which are the shaped surfaces.
  • the glass substrate 20 of the present embodiment can be applied to, for example, automobile instrument panels, automobile windows, cover glasses of touch panel displays of tablets, notebook PCs, smartphones, etc., and cover glasses of PC monitors, etc.
  • the glass substrate 20 of the present embodiment is particularly suitable as a glass substrate for an in-vehicle display.
  • the pedestal 5 of the present embodiment is a pedestal 5 for fixing the glass plate 4, and at least part of the surface 5a of the pedestal 5 is a curved surface of the main surface itself having a curved surface having a plurality of radii of curvature of the glass plate 4. have a shape.
  • the pedestal 5 can be manufactured by the manufacturing method described with reference to FIGS. 6A, 6B, and 7A to 7C. At least part of the surface 5a of the pedestal 5 formed by these manufacturing methods has the shape of the main surface 4b of the glass plate 4 itself. In addition, it is preferable that the entire surface 5a is formed in the shape of the main surface 4b of the glass plate 4 itself. Thereby, as shown in FIG.
  • the internal stress generated in the glass plate 4 can be effectively reduced when fixing the glass plate 4.
  • the internal stress generated in the glass plate 4 is 10 MPa or less, preferably 2 MPa. can be reduced to the following. Therefore, when the main surfaces 4a and 4b of the glass plate 4 are subjected to a predetermined processing while the glass plate 4 is fixed to the base 5, the development of microcracks and the occurrence of defects such as chipping during shape processing can be effectively prevented. can be suppressed.
  • the base 5 of the present embodiment has a complex shape in which at least a portion of the surface 5a of the base 5 has curvature radii around two or more tangential axes that intersect at an arbitrary point on the surface 5a.
  • the entire surface 5a preferably has the complex shape.
  • the complex shape on the surface 5a of the base 5 has tangential directions parallel to the mutually orthogonal X and Y directions, as shown in FIG. 9A.
  • This pedestal 5 is a pedestal used for manufacturing the glass substrate 20 shown in FIG. Thereby, when the glass plate 4 is fixed to the surface 5a of the base 5, the glass plate 4 can be brought into close contact with the base 5 appropriately. Therefore, the internal stress generated in the glass plate 4 can be appropriately suppressed.
  • the pedestal 5 of the present embodiment it is possible to effectively suppress the development of microcracks and the occurrence of defects such as chipping that occur during shape processing of the glass plate 4 having the main surfaces 4a and 4b having a complicated shape. .
  • the features of the above embodiment are summarized below.
  • One aspect of the present embodiment is a glass plate 4 having principal surfaces 4a and 4b having curved surfaces with a plurality of radii of curvature.
  • a method for manufacturing a glass substrate is provided, in which at least a part of the glass plate is fixed to the surface 5a of 5 and subjected to a predetermined processing.
  • the entire surface 5a of the base 5 has a curved surface shape of the main surface of the glass plate 4 itself. According to this configuration, especially when the main surface of the glass plate 4 is laser-cut, it is possible to effectively suppress the development of microcracks and the occurrence of defects such as chipping.
  • the glass plate 4 having the main surfaces 4a and 4b having curved surfaces with a plurality of radii of curvature is formed on the surface of the pedestal 5 by at least a portion of the glass plate 4. 5a, the internal stress generated in the glass plate 4 by the fixation is 10 MPa or less, and the glass plate 4 is subjected to a predetermined processing while the glass plate 4 is fixed to the surface 5a of the pedestal 5.
  • the glass plate 4 when the glass plate 4 is fixed to the base 5, the internal stress generated in the glass plate 4 can be extremely reduced. can be effectively suppressed.
  • the main surfaces 4a and 4b of the glass plate 4 are laser-cut or cut with a cutter while the glass plate 4 is fixed to the pedestal 5, the development of microcracks and the occurrence of defects such as chipping can be effectively suppressed.
  • one aspect of the present embodiment is a method for manufacturing a pedestal 5 for fixing a glass plate 4, wherein the glass plate 4 has main surfaces 4a and 4b having curved surfaces having a plurality of radii of curvature.
  • a method for manufacturing a pedestal is provided in which at least a portion of the surface 5a of the pedestal 5 is shaped to substantially the same shape as at least a portion of the curved shape of the main surface itself. It is preferable that the entire surface 5a of the pedestal 5 is modeled after the curved shape of the main surface itself.
  • one aspect of the present embodiment is a method for manufacturing a pedestal 5 for fixing a glass plate 4, wherein the glass plate 4 has main surfaces 4a and 4b having curved surfaces having a plurality of radii of curvature.
  • a method for manufacturing a pedestal is provided in which the main surfaces 4a and 4b of the pedestal are measured by a 3D scanner 19 and at least a part of the surface 5a of the pedestal 5 is formed based on the obtained shape data. It is preferable to form the entire surface 5a of the base 5 based on the acquired shape data.
  • one aspect of the present embodiment is a method for manufacturing a pedestal 5 for fixing a glass plate 4, wherein the glass plate 4 has main surfaces 4a and 4b having curved surfaces having a plurality of radii of curvature.
  • the pedestal 5 contains a thermoplastic resin, and at least part of the main surface of the glass plate 4 is pressed against the surface of the thermoplastic resin in a softened state to harden the thermoplastic resin. provide a way. It is preferable to press the entire surface 5a of the pedestal 5 against the glass plate 4 to form it.
  • the pedestal 5 having the surface 5a following the curved shape of the main surface of the glass plate 4 can be manufactured with high precision. Moreover, even if the main surfaces 4a and 4b of the glass plate 4 have a complicated shape that cannot be expanded on a plane, the base 5 having the surface 5a similarly having a complicated shape can be formed easily and accurately.
  • the glass plate 4 is fixed to the surface 5a of the base 5 formed by the manufacturing method described above, and the main surfaces 4a and 4b of the glass plate 4 are provided with predetermined to provide a method for manufacturing a glass substrate.
  • the curved surface shape of the surface 5a of the pedestal 5 follows the curved surface shape of the main surface of the glass plate 4. Therefore, when the glass plate 4 is placed on the surface 5a of the pedestal 5, the glass plate 4 and the pedestal are separated from each other. 5, or the gap can be made extremely small.
  • alkali glass can be used for the glass plate 4 .
  • the main surface of the glass plate 4 cannot be developed into a plane having a radius of curvature around two or more tangential axes that intersect at an arbitrary point on the main surface.
  • a method for manufacturing a glass substrate having a shape can be provided.
  • the first curvature radius can be 5 mm or more and 3000 mm or less
  • the second curvature radius can be 600 mm or more and 14000 mm or less.
  • the internal stress generated in the glass plate 4 can be suppressed, and defects such as microcrack development and chipping that occur during shape processing of the glass plate 4 can occur. can be effectively suppressed.
  • the glass plate 4 is fixed to the surface 5a of the pedestal 5 by suction under negative pressure.
  • the shape error between the main surface shape of the glass plate 4 and the surface shape of the pedestal 5 is 1.0 mm or less. More preferably, the shape error is 0.3 mm or less.
  • the shape error between the glass plate 4 and the pedestal 5 can be reduced, so that the gap generated when the glass plate 4 is fixed to the pedestal 5 can be made very small. Therefore, the internal stress generated in the glass plate 4 when the glass plate 4 is fixed can be reduced, and the development of microcracks and defects such as chipping that occur when the glass plate 4 is shaped can be effectively suppressed.
  • the predetermined processing internal processing of the glass plate using laser light can be exemplified as the predetermined processing. Further, as the predetermined processing, chamfering processing of the end surface of the glass plate using a grindstone can be exemplified. Through these processing steps, the shape of the end face of the glass substrate of the present embodiment can be formed with high accuracy and small variations.
  • one aspect of the present embodiment is provided with main surfaces 20a and 20b having curved surfaces having a plurality of radii of curvature, and at least one end surface 20c and 20d connecting the opposing main surfaces is an edge surface 22 and a chamfered surface 23 located between the edge surface and each principal surface, the chamfered surface 23 having a concave surface.
  • the visibility of the end face can be improved, the processing load during chamfering can be reduced, and the processing work can be shortened.
  • the variation width of the chamfer width T1 can be reduced.
  • the maximum height Sz of the surface roughness of the edge surface 22 and the chamfered surface 23 is preferably 10 ⁇ m or less. Further, in the present embodiment, the variation width of the chamfered width T1 of the chamfered surface 23 on at least one of the end faces can be set to 20 ⁇ m or less. In this manner, the maximum height Sz of the edge surface 22 and the chamfered surface 23 can be reduced, variation in the chamfered shape can be reduced, and the end surface shape can be formed with high accuracy.
  • the main surface 20a of the glass substrate 20 has a shape that cannot be expanded on a plane and has a radius of curvature around two or more tangential axes that intersect at an arbitrary point on the main surface. It is preferable to have As described above, in the present embodiment, the main surface of the glass substrate 20 can be formed to have a complicated shape that cannot be developed on a plane, and the internal stress generated by fixing to the pedestal during shape processing can be reduced. It is possible to effectively suppress the development of cracks and the occurrence of defects such as chipping. Moreover, the glass substrate 20 of this embodiment can be preferably used for an in-vehicle display, for example.
  • one aspect of the present embodiment is a pedestal 5 for fixing the glass plate 4,
  • the glass plate has a main surface having a curved surface having a plurality of radii of curvature, and the surface 5a of the pedestal 5 at least part of which has a curved surface shape of the main surface itself of the glass plate. It is preferable that the entire surface 5a of the pedestal 5 is formed in the curved shape of the main surface of the glass plate 4 itself. According to this configuration, when the glass plate 4 is installed on the surface 5 a of the base 5 , the glass plate 4 and the base 5 can be appropriately brought into contact with each other.
  • the internal stress generated in the glass plate 4 can be suppressed to 10 MPa or less, preferably 2 MPa or less. Therefore, when the glass plate 4 is fixed to the base 5 and the main surface of the glass plate 4 is subjected to a predetermined processing, it is possible to effectively suppress the development of microcracks and the occurrence of defects such as chipping that occur during shape processing.
  • one aspect of the present embodiment is a pedestal 5 for fixing the glass plate 4, wherein at least part of the surface 5a of the pedestal 5 is two tangential axes that intersect at any point on the surface.
  • a pedestal having a shape that cannot be developed on a plane and has a radius of curvature around the above axis.
  • the entire surface 5a of the pedestal 5 has a shape that cannot be developed on a plane. According to this configuration, even if at least a part of the surface 5a has a complicated shape that cannot be developed on a plane, when the glass plate 4 is placed on the surface 5a of the pedestal 5, a gap is formed between the glass plate 4 and the pedestal 5. or the gap can be made extremely small.
  • the internal stress generated in the glass plate 4 can be suppressed, and the development of microcracks and the occurrence of defects such as chipping that occur during shape processing of the glass plate 4 can be suppressed. can be effectively suppressed.
  • a method for manufacturing a glass substrate wherein at least part of a glass plate having a main surface having a curved surface with a plurality of radii of curvature is fixed to the surface of a pedestal, and the glass plate is subjected to a predetermined process.
  • At least a portion of a glass plate having a main surface having a curved surface with multiple radii of curvature is brought into close contact with and fixed to the surface of the pedestal;
  • the internal stress generated in the glass plate by the fixation is 10 MPa or less,
  • a method for manufacturing a pedestal for fixing a glass plate comprising: The glass plate has a main surface having a curved surface with a plurality of radii of curvature, A method of manufacturing a pedestal, wherein at least part of the surface of the pedestal is modeled to have substantially the same shape as at least part of the curved shape of the main surface itself of the glass plate.
  • a method for manufacturing a pedestal for fixing a glass plate comprising: The glass plate has a main surface having a curved surface with a plurality of radii of curvature, A method of manufacturing a pedestal, comprising measuring the main surface with a 3D scanner and forming at least a part of the surface of the pedestal based on the acquired shape data.
  • a method for manufacturing a pedestal for fixing a glass plate comprising: The glass plate has a main surface having a curved surface with a plurality of radii of curvature, The pedestal includes a thermoplastic resin, A method of manufacturing a pedestal, wherein at least part of the main surface is pressed against a surface of the thermoplastic resin in a softened state to harden the thermoplastic resin. [6] At least part of the glass plate is fixed to the surface of the pedestal formed by the method for manufacturing a pedestal according to any one of [3] to [5], A method for manufacturing a glass substrate, wherein the main surface of the glass plate is subjected to a predetermined process.
  • [7] The method for producing a glass substrate according to [1], [2], or [6], wherein the glass plate is alkali glass.
  • the main surface of the glass plate has a shape that cannot be developed on a plane and has a radius of curvature around two or more tangential axes that intersect at an arbitrary point on the main surface, [1], [2]. , [6], or the method for manufacturing a glass substrate according to [7].
  • [14] comprising a principal surface having a curved surface with a plurality of radii of curvature; glass, wherein at least one end surface connecting the opposing main surfaces has an edge surface and a chamfered surface positioned between the edge surface and each of the main surfaces, the chamfered surface having a concave surface; substrate.
  • the maximum height Sz of the surface roughness of the edge surface and the chamfered surface is 10 ⁇ m or less.
  • the main surface of the glass substrate has a shape that cannot be developed on a plane and has a radius of curvature around two or more tangential axes that intersect at an arbitrary point on the main surface, [14] to [16].
  • the glass substrate according to any one of. [18] The glass substrate according to any one of [14] to [17], which is for an in-vehicle display.
  • a pedestal for fixing a glass plate The glass plate has a main surface having a curved surface with a plurality of radii of curvature, A pedestal, wherein at least part of the surface of the pedestal has a curved surface shape of the main surface itself.
  • a pedestal for fixing a glass plate A pedestal, wherein at least a part of the surface of the pedestal has a shape that cannot be developed on a plane and has radii of curvature about two or more tangential axes that intersect at an arbitrary point on the surface.
  • Example 1 a glass plate 35 whose main surface has a curved shape that cannot be developed on a plane was measured with a 3D scanner, and a pedestal 36 was produced based on the obtained shape data.
  • a perspective view of the fabricated pedestal 36 is shown in FIG. 12A.
  • Example 2 is the case where the surface of the pedestal is formed according to the design value of the glass plate.
  • Example 1 is an example and Example 2 is a comparative example.
  • 12B is a graph showing the height difference between the surface of the pedestal 36 in Example 1 and the surface of the pedestal in Example 2.
  • FIG. As can be seen from the vertical scale on the right axis of FIG. 12B, the height difference between the surfaces of the pedestals of Examples 1 and 2 was about 0.7 mm at maximum. Thus, it was found that when the pedestal was manufactured based on the design values, the shape error with the molded glass plate increased. On the other hand, in Example 1, the shape error could be made very small.

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Abstract

La présente invention concerne un procédé qui est destiné à la fabrication d'un substrat en verre et qui implique : la fixation, sur la surface d'un socle, d'au moins une partie d'une plaque de verre pourvue d'une face principale ayant une surface incurvée qui a une pluralité de rayons de courbure ; et la réalisation d'un processus prescrit sur la plaque de verre. La surface du socle a une forme sensiblement identique à au moins une partie de la forme incurvée de la face principale de la plaque de verre.
PCT/JP2022/043422 2021-11-30 2022-11-24 Procédé de fabrication d'un substrat en verre, procédé de fabrication d'un socle, substrat en verre et socle WO2023100744A1 (fr)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015139843A (ja) * 2014-01-29 2015-08-03 中村留精密工業株式会社 板材の周縁加工砥石及び面取装置
JP2017132684A (ja) * 2016-01-22 2017-08-03 旭硝子株式会社 曲面ガラス加工装置及び曲面ガラス加工方法
JP2021531187A (ja) * 2018-07-16 2021-11-18 コーニング インコーポレイテッド 冷間曲げガラス基板を有する乗物内装システムおよびその形成方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015139843A (ja) * 2014-01-29 2015-08-03 中村留精密工業株式会社 板材の周縁加工砥石及び面取装置
JP2017132684A (ja) * 2016-01-22 2017-08-03 旭硝子株式会社 曲面ガラス加工装置及び曲面ガラス加工方法
JP2021531187A (ja) * 2018-07-16 2021-11-18 コーニング インコーポレイテッド 冷間曲げガラス基板を有する乗物内装システムおよびその形成方法

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