Glass sheet laminate and method for producing same

• US 9,701,565 B2
• Filed: 10/24/2013
• Issued: 07/11/2017
• Est. Priority Date: 11/13/2012
• Status: Active Grant

• Current Assignee: Nippon Electric Glass Company Limited
• Original Assignee: Nippon Electric Glass Company Limited
• Inventors: Fujii, Takahide, Inayama, Naotoshi
• Primary Examiner(s): Herring, Lisa
• Application Number:
  US14/442,498
• Publication Number:
  US 20160272532A1
• Time in Patent Office: 1,356 Days
• Field of Search: None
• CPC Class Codes: C03B 23/245 Hollow glass sheets
• CPC Class Codes: C03B 25/025 Glass sheets
• CPC Class Codes: C03B 33/07 Cutting armoured, multi-layered, coated or laminated, glass products
• CPC Class Codes: C03B 33/082 using a focussed radiation beam, e.g. laser C03B33/0855 takes precedence
• CPC Class Codes: H10K 50/841 Self-supporting sealing arrangements
• CPC Class Codes: H10K 50/844 Encapsulations
• CPC Class Codes: H10K 71/421 using coherent electromagnetic radiation, e.g. laser annealing

Abstract

A method of manufacturing a glass sheet laminate to be formed by integrally laminating two glass sheets includes: laminating the two glass sheets by bringing surfaces thereof in a vicinity of an outer peripheral portion into surface contact with each other; performing laser fusing so as to cut and remove a part of a surface contact portion under a state in which the surface contact portion has a surface roughness of 2.0 nm or less; and processing a fusing end surface of the surface contact portion into a curved surface and sealing the fusing end surface with heat generated when the laser fusing is performed.

Claims

1. A method of manufacturing a glass sheet laminate to be formed by integrally laminating glass sheets, the method comprising:

laminating the glass sheets by bringing surfaces thereof including a preset cutting line into surface contact with each other so as to form a surface contact portion;

performing laser fusing along the preset cutting line included in the surface contact portion under a state in which the surface contact portion has a surface roughness of 2.0 nm or less;

processing a fusing end surface of the surface contact portion into a curved surface and sealing the fusing end surface with heat generated when the laser fusing is performed;

containing a functional member between the glass sheets;

forming the surface contact portion around the functional member; and

performing the laser fusing after the surface contact portion is formed.

2. The method of manufacturing a glass sheet laminate according to claim 1, further comprising annealing a vicinity of the fusing end surface through irradiation with a laser having a lower energy density than a laser used for the laser fusing.

3. The method of manufacturing a glass sheet laminate according to claim 1, wherein the glass sheets comprise three or more glass sheets.

4. The method of manufacturing a glass sheet laminate according to claim 1, wherein the glass sheets have a total thickness of 0.5 mm or less.

5. A method of manufacturing a glass sheet laminate to be formed by integrally laminating glass sheets, the method comprising:

laminating the glass sheets by bringing surfaces thereof including a preset cutting line into surface contact with each other so as to form a surface contact portion;

performing laser fusing along the preset cutting line included in the surface contact portion under a state in which the surface contact portion has a surface roughness of 2.0 nm or less;

processing a fusing end surface of the surface contact portion into a curved surface and sealing the fusing end surface with heat generated when the laser fusing is performed; and

performing compression bonding of the surface contact portion before the laser fusing.

6. A method of manufacturing a glass sheet laminate to be formed by integrally laminating glass sheets, the method comprising:

laminating the glass sheets by bringing surfaces thereof including a preset cutting line into surface contact with each other so as to form a surface contact portion;

performing laser fusing along the preset cutting line included in the surface contact portion under a state in which the surface contact portion has a surface roughness of 2.0 nm or less; and

processing a fusing end surface of the surface contact portion into a curved surface and sealing the fusing end surface with heat generated when the laser fusing is performed,

wherein the surface contact portion is formed under a reduced-pressure atmosphere.