Glass film cutting method and glass film laminate
AssigneeNippon Electric Glass Co., Ltd.
InventorYasuhiro MATSUMOTO
Life of this patent
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Abstract
A glass film laminate is manufactured by setting a surface roughness Ra of a surface of a glass film having a thickness of 200 μm or less to contact a support glass, which supports the glass film, and a surface of the support glass to contact the glass film to 2.0 nm or less, and by bringing the surfaces of the glass film and the support glass into surface contact with each other. After that, a laser scribing operation is carried out, in which a scribe line is formed in the glass film by propagating an initial crack through laser heating of the glass film followed by subsequent cooling of the glass film.
Claims18
A glass film cutting method, comprising:
- a laser scribing step of forming a scribe line in a glass film having a thickness of 200 μm or less by propagating an initial crack through laser heating of the glass film followed by subsequent cooling of the glass film;
- and
- a laminate manufacturing step of manufacturing a glass film laminate by setting a surface roughness Ra of each of a surface of the glass film to be brought into contact with a support glass, which is configured to support the glass film, and a surface of the support glass to be brought into contact with the glass film to 2.0 nm or less, and by bringing the surface of the glass film and the surface of the support glass into surface contact with each other, followed by the laser scribing step.
A glass film laminate, comprising:
- a glass film having a thickness of 200 μm or less;
- and
- a support glass, which is configured to support the glass film,
- wherein a surface of the glass film to be brought into contact with the support glass has a surface roughness Ra of 2.0 nm or less, and a surface of the support glass to be brought into contact with the glass film has a surface roughness Ra of 2.0 nm or less,
- wherein the surface of the glass film and the surface of the support glass are brought into surface contact with each other to laminate the glass film and the support glass,
- wherein the glass film comprises a scribe line formed therein by propagating an initial crack through laser heating of the glass film followed by subsequent cooling of the glass film, and
- wherein the support glass is thinner than the glass film.
A glass film laminate, comprising:
- a glass film having a thickness of 200 μm or less;
- and
- a support glass, which is configured to support the glass film,
- wherein a surface of the glass film to be brought into contact with the support glass has a surface roughness Ra of 2.0 nm or less, and a surface of the support glass to be brought into contact with the glass film has a surface roughness Ra of 2.0 nm or less,
- wherein the surface of the glass film and the surface of the support glass are brought into surface contact with each other to laminate the glass film and the support glass, and
- wherein the support glass is thinner than the glass film.
Dependencies are inferred from the claim text.