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    • 47. 发明申请
    • LASER SCORING OF GLASS SHEETS AT HIGH SPEEDS AND WITH LOW RESIDUAL STRESS
    • 玻璃片的激光切割在高速和低残留应力下
    • WO2009067164A1
    • 2009-05-28
    • PCT/US2008/012770
    • 2008-11-14
    • CORNING INCORPORATEDABRAMOV, Anatoli ASUN, YaweiXU, WeiZHOU, Naiyue
    • ABRAMOV, Anatoli ASUN, YaweiXU, WeiZHOU, Naiyue
    • C03B33/09B23K26/073
    • C03B33/091Y02P40/57
    • Experimental data is presented which shows that laser scoring of glass sheets (112) with existing techniques produces unacceptable levels of residual stress in the separated sheets as the scoring speed is increased. Methods for solving this problem are disclosed which employ elongated and, preferably, asymmetrically-truncated laser beams (13). The methods allow glass sheets (112) to be scored at speeds of 1000mm/s and above with low levels of residual stress, e.g., levels of residual stress which are less than or equal to 500 psi. Such low levels of residual stress translate into low levels of distortion during the manufacture of display panels (e.g., LCD panels) as well as in improved properties of the separated edges. The methods can be used with glasses of various types including glasses having low coefficients of thermal expansion.
    • 实验数据显示,现有技术的玻璃板(112)的激光刻痕在分选片材中随着刻痕速度的提高而产生不可接受的残余应力水平。 公开了解决这个问题的方法,其采用细长的,优选的是非对称截断的激光束(13)。 这些方法允许玻璃板(112)以1000mm / s以上的速度刻痕,残留应力低,例如小于或等于500psi的残余应力水平。 这种低水平的残余应力在显示面板(例如LCD面板)的制造过程中转化为低水平的变形以及分离边缘的改进的性质。 该方法可用于各种类型的眼镜,包括具有低热膨胀系数的眼镜。