Title:
BRITTLE BASE PLATE DISJOINING METHOD
Document Type and Number:
WIPO Patent Application WO/2016/067728
Kind Code:
A1
Abstract:
In this invention, a trench line (TL) is formed over a glass base plate (4) by rolling a scribing wheel (51) while applying a load (F). The scribing wheel (51) progresses towards a progression direction (DP), which is identical to the direction of an in-plane component (Fi) of the load (F). The step of forming the trench line (TL) is performed in such a manner as to obtain a crackless state. A crack of the glass base plate (4) in a thickness direction (DT) is caused to extend towards the progression direction along the trench line (TL), thereby forming a crack line (CL). In the glass base plate (4), in a direction that intersects with the trench line (TL), a continuous connection immediately below the trench line (TL) is disrupted by the crack line (CL). The glass base plate (4) becomes disjoined along the crack line (CL).
Inventors:
SOYAMA HIROSHI (JP)
Application Number:
PCT/JP2015/073989
Publication Date:
May 06, 2016
Filing Date:
August 26, 2015
Export Citation:
Assignee:
MITSUBOSHI DIAMOND IND CO LTD (JP)
International Classes:
C03B33/037; B28D5/00
Foreign References:
| JP2012000793A | 2012-01-05 | |||
| JP2008201629A | 2008-09-04 | |||
| JP2007331983A | 2007-12-27 |
Attorney, Agent or Firm:
YOSHITAKE Hidetoshi et al. (JP)
Hidetoshi Yoshitake (JP)
Hidetoshi Yoshitake (JP)
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