发明授权
- 专利标题： Laser-processable glass substrate and laser processing method
- 专利标题（中）： 激光加工玻璃基板和激光加工方法
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申请号： US09155126申请日： 1998-09-22
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公开(公告)号： US06262389B1公开(公告)日： 2001-07-17
- 发明人: Tadashi Koyama , Keiji Tsunetomo
- 申请人： Tadashi Koyama , Keiji Tsunetomo
- 优先权： JP8-068415 19960325
- 主分类号： B23K2600
- IPC分类号： B23K2600
摘要：
A sheet of silicate glass having a thickness of 2 mm and composed mainly of SiO2, and containing Al2O3, B2O3, Na2O, F, etc., is immersed in a molten salt comprising a mixture of 50 mol % of silver nitrate and 50 mol % of sodium nitrate. Na ions in the surface of the glass are eluted, diffusing Ag ions in the molten salt into the glass. When a laser beam is applied to the glass substrate thus formed, the glass substrate is evaporated or ablated progressively from its surface. The glass substrate is processed to a smooth finish without causing cracking or breakage.